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annotate contrib/python-zstandard/c-ext/compressor.c @ 37495:b1fb341d8a61

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zstandard: vendor python-zstandard 0.9.0 This was just released. It features a number of goodies. More info at https://gregoryszorc.com/blog/2018/04/09/release-of-python-zstandard-0.9/. The clang-format ignore list was updated to reflect the new source of files. The project contains a vendored copy of zstandard 1.3.4. The old version was 1.1.3. One of the changes between those versions is that zstandard is now dual licensed BSD + GPLv2 and the patent rights grant has been removed. Good riddance. The API should be backwards compatible. So no changes in core should be needed. However, there were a number of changes in the library that we'll want to adapt to. Those will be addressed in subsequent commits. Differential Revision: https://phab.mercurial-scm.org/D3198
author Gregory Szorc <gregory.szorc@gmail.com>
date Mon, 09 Apr 2018 10:13:29 -0700
parents e0dc40530c5a
children 73fef626dae3
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1 /**
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2 * Copyright (c) 2016-present, Gregory Szorc
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3 * All rights reserved.
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4 *
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5 * This software may be modified and distributed under the terms
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6 * of the BSD license. See the LICENSE file for details.
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7 */
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8
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9 #include "python-zstandard.h"
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10 #include "pool.h"
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12 extern PyObject* ZstdError;
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14 int ensure_cctx(ZstdCompressor* compressor) {
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15 size_t zresult;
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16
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17 assert(compressor);
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18 assert(compressor->cctx);
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19 assert(compressor->params);
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21 ZSTD_CCtx_reset(compressor->cctx);
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22
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23 zresult = ZSTD_CCtx_setParametersUsingCCtxParams(compressor->cctx, compressor->params);
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24 if (ZSTD_isError(zresult)) {
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25 PyErr_Format(ZstdError, "could not set compression parameters: %s",
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26 ZSTD_getErrorName(zresult));
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27 return 1;
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28 }
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30 if (compressor->dict) {
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31 if (compressor->dict->cdict) {
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32 zresult = ZSTD_CCtx_refCDict(compressor->cctx, compressor->dict->cdict);
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33 }
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34 else {
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35 zresult = ZSTD_CCtx_loadDictionary_advanced(compressor->cctx,
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36 compressor->dict->dictData, compressor->dict->dictSize,
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37 ZSTD_dlm_byRef, compressor->dict->dictType);
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38 }
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39 if (ZSTD_isError(zresult)) {
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40 PyErr_Format(ZstdError, "could not load compression dictionary: %s",
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41 ZSTD_getErrorName(zresult));
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42 return 1;
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43 }
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44 }
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45
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46 return 0;
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47 }
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48
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49 static PyObject* frame_progression(ZSTD_CCtx* cctx) {
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50 PyObject* result = NULL;
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51 PyObject* value;
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52 ZSTD_frameProgression progression;
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53
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54 result = PyTuple_New(3);
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55 if (!result) {
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56 return NULL;
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57 }
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58
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59 progression = ZSTD_getFrameProgression(cctx);
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60
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61 value = PyLong_FromUnsignedLongLong(progression.ingested);
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62 if (!value) {
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63 Py_DECREF(result);
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64 return NULL;
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65 }
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66
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67 PyTuple_SET_ITEM(result, 0, value);
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68
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69 value = PyLong_FromUnsignedLongLong(progression.consumed);
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70 if (!value) {
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71 Py_DECREF(result);
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72 return NULL;
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73 }
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74
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75 PyTuple_SET_ITEM(result, 1, value);
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76
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77 value = PyLong_FromUnsignedLongLong(progression.produced);
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78 if (!value) {
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79 Py_DECREF(result);
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80 return NULL;
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81 }
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82
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83 PyTuple_SET_ITEM(result, 2, value);
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84
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85 return result;
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86 }
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87
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88 PyDoc_STRVAR(ZstdCompressor__doc__,
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89 "ZstdCompressor(level=None, dict_data=None, compression_params=None)\n"
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90 "\n"
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91 "Create an object used to perform Zstandard compression.\n"
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92 "\n"
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93 "An instance can compress data various ways. Instances can be used multiple\n"
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94 "times. Each compression operation will use the compression parameters\n"
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95 "defined at construction time.\n"
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96 "\n"
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97 "Compression can be configured via the following names arguments:\n"
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98 "\n"
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99 "level\n"
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100 " Integer compression level.\n"
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101 "dict_data\n"
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102 " A ``ZstdCompressionDict`` to be used to compress with dictionary data.\n"
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103 "compression_params\n"
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104 " A ``CompressionParameters`` instance defining low-level compression"
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105 " parameters. If defined, this will overwrite the ``level`` argument.\n"
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106 "write_checksum\n"
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107 " If True, a 4 byte content checksum will be written with the compressed\n"
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108 " data, allowing the decompressor to perform content verification.\n"
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109 "write_content_size\n"
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110 " If True (the default), the decompressed content size will be included in\n"
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111 " the header of the compressed data. This data will only be written if the\n"
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112 " compressor knows the size of the input data.\n"
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113 "write_dict_id\n"
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114 " Determines whether the dictionary ID will be written into the compressed\n"
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115 " data. Defaults to True. Only adds content to the compressed data if\n"
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116 " a dictionary is being used.\n"
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117 "threads\n"
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118 " Number of threads to use to compress data concurrently. When set,\n"
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119 " compression operations are performed on multiple threads. The default\n"
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120 " value (0) disables multi-threaded compression. A value of ``-1`` means to\n"
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121 " set the number of threads to the number of detected logical CPUs.\n"
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122 );
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123
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124 static int ZstdCompressor_init(ZstdCompressor* self, PyObject* args, PyObject* kwargs) {
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125 static char* kwlist[] = {
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126 "level",
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
127 "dict_data",
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
128 "compression_params",
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
129 "write_checksum",
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
130 "write_content_size",
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
131 "write_dict_id",
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
132 "threads",
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
133 NULL
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
134 };
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
135
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
136 int level = 3;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
137 ZstdCompressionDict* dict = NULL;
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
138 ZstdCompressionParametersObject* params = NULL;
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
139 PyObject* writeChecksum = NULL;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
140 PyObject* writeContentSize = NULL;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
141 PyObject* writeDictID = NULL;
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
142 int threads = 0;
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
143
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
144 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|iO!O!OOOi:ZstdCompressor",
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30830
diff changeset
145 kwlist, &level, &ZstdCompressionDictType, &dict,
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
146 &ZstdCompressionParametersType, &params,
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
147 &writeChecksum, &writeContentSize, &writeDictID, &threads)) {
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
148 return -1;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
149 }
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
150
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
151 if (level > ZSTD_maxCLevel()) {
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
152 PyErr_Format(PyExc_ValueError, "level must be less than %d",
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
153 ZSTD_maxCLevel() + 1);
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
154 return -1;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
155 }
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
156
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
157 if (threads < 0) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
158 threads = cpu_count();
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
159 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
160
30822
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
161 /* We create a ZSTD_CCtx for reuse among multiple operations to reduce the
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
162 overhead of each compression operation. */
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
163 self->cctx = ZSTD_createCCtx();
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
164 if (!self->cctx) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
165 PyErr_NoMemory();
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
166 return -1;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
167 }
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
168
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
169 /* TODO stuff the original parameters away somewhere so we can reset later. This
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
170 will allow us to do things like automatically adjust cparams based on input
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
171 size (assuming zstd isn't doing that internally). */
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
172
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
173 self->params = ZSTD_createCCtxParams();
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
174 if (!self->params) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
175 PyErr_NoMemory();
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
176 return -1;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
177 }
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
178
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
179 if (params && writeChecksum) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
180 PyErr_SetString(PyExc_ValueError,
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
181 "cannot define compression_params and write_checksum");
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
182 return -1;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
183 }
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
184
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
185 if (params && writeContentSize) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
186 PyErr_SetString(PyExc_ValueError,
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
187 "cannot define compression_params and write_content_size");
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
188 return -1;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
189 }
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
190
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
191 if (params && writeDictID) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
192 PyErr_SetString(PyExc_ValueError,
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
193 "cannot define compression_params and write_dict_id");
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
194 return -1;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
195 }
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
196
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
197 if (params && threads) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
198 PyErr_SetString(PyExc_ValueError,
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
199 "cannot define compression_params and threads");
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
200 return -1;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
201 }
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
202
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
203 if (params) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
204 if (set_parameters(self->params, params)) {
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
205 return -1;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
206 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
207 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
208 else {
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
209 if (set_parameter(self->params, ZSTD_p_compressionLevel, level)) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
210 return -1;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
211 }
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
212
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
213 if (set_parameter(self->params, ZSTD_p_contentSizeFlag,
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
214 writeContentSize ? PyObject_IsTrue(writeContentSize) : 1)) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
215 return -1;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
216 }
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
217
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
218 if (set_parameter(self->params, ZSTD_p_checksumFlag,
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
219 writeChecksum ? PyObject_IsTrue(writeChecksum) : 0)) {
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
220 return -1;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
221 }
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
222
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
223 if (set_parameter(self->params, ZSTD_p_dictIDFlag,
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
224 writeDictID ? PyObject_IsTrue(writeDictID) : 1)) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
225 return -1;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
226 }
30822
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
227
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
228 if (threads) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
229 if (set_parameter(self->params, ZSTD_p_nbWorkers, threads)) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
230 return -1;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
231 }
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
232 }
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
233 }
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
234
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
235 if (dict) {
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
236 self->dict = dict;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
237 Py_INCREF(dict);
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
238 }
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
239
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
240 if (ensure_cctx(self)) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
241 return -1;
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
242 }
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
243
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
244 return 0;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
245 }
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
246
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
247 static void ZstdCompressor_dealloc(ZstdCompressor* self) {
30822
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
248 if (self->cctx) {
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
249 ZSTD_freeCCtx(self->cctx);
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
250 self->cctx = NULL;
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
251 }
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
252
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
253 if (self->params) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
254 ZSTD_freeCCtxParams(self->params);
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
255 self->params = NULL;
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
256 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
257
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
258 Py_XDECREF(self->dict);
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
259 PyObject_Del(self);
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
260 }
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
261
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
262 PyDoc_STRVAR(ZstdCompressor_memory_size__doc__,
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
263 "memory_size()\n"
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
264 "\n"
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
265 "Obtain the memory usage of this compressor, in bytes.\n"
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
266 );
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
267
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
268 static PyObject* ZstdCompressor_memory_size(ZstdCompressor* self) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
269 if (self->cctx) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
270 return PyLong_FromSize_t(ZSTD_sizeof_CCtx(self->cctx));
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
271 }
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
272 else {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
273 PyErr_SetString(ZstdError, "no compressor context found; this should never happen");
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
274 return NULL;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
275 }
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
276 }
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
277
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
278 PyDoc_STRVAR(ZstdCompressor_frame_progression__doc__,
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
279 "frame_progression()\n"
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
280 "\n"
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
281 "Return information on how much work the compressor has done.\n"
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
282 "\n"
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
283 "Returns a 3-tuple of (ingested, consumed, produced).\n"
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
284 );
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
285
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
286 static PyObject* ZstdCompressor_frame_progression(ZstdCompressor* self) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
287 return frame_progression(self->cctx);
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
288 }
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
289
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
290 PyDoc_STRVAR(ZstdCompressor_copy_stream__doc__,
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
291 "copy_stream(ifh, ofh[, size=0, read_size=default, write_size=default])\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
292 "compress data between streams\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
293 "\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
294 "Data will be read from ``ifh``, compressed, and written to ``ofh``.\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
295 "``ifh`` must have a ``read(size)`` method. ``ofh`` must have a ``write(data)``\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
296 "method.\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
297 "\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
298 "An optional ``size`` argument specifies the size of the source stream.\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
299 "If defined, compression parameters will be tuned based on the size.\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
300 "\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
301 "Optional arguments ``read_size`` and ``write_size`` define the chunk sizes\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
302 "of ``read()`` and ``write()`` operations, respectively. By default, they use\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
303 "the default compression stream input and output sizes, respectively.\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
304 );
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
305
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
306 static PyObject* ZstdCompressor_copy_stream(ZstdCompressor* self, PyObject* args, PyObject* kwargs) {
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
307 static char* kwlist[] = {
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
308 "ifh",
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
309 "ofh",
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
310 "size",
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
311 "read_size",
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
312 "write_size",
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
313 NULL
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
314 };
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
315
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
316 PyObject* source;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
317 PyObject* dest;
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
318 unsigned long long sourceSize = ZSTD_CONTENTSIZE_UNKNOWN;
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
319 size_t inSize = ZSTD_CStreamInSize();
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
320 size_t outSize = ZSTD_CStreamOutSize();
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
321 ZSTD_inBuffer input;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
322 ZSTD_outBuffer output;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
323 Py_ssize_t totalRead = 0;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
324 Py_ssize_t totalWrite = 0;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
325 char* readBuffer;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
326 Py_ssize_t readSize;
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
327 PyObject* readResult = NULL;
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
328 PyObject* res = NULL;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
329 size_t zresult;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
330 PyObject* writeResult;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
331 PyObject* totalReadPy;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
332 PyObject* totalWritePy;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
333
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
334 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "OO|Kkk:copy_stream", kwlist,
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30830
diff changeset
335 &source, &dest, &sourceSize, &inSize, &outSize)) {
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
336 return NULL;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
337 }
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
338
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
339 if (!PyObject_HasAttrString(source, "read")) {
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
340 PyErr_SetString(PyExc_ValueError, "first argument must have a read() method");
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
341 return NULL;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
342 }
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
343
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
344 if (!PyObject_HasAttrString(dest, "write")) {
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
345 PyErr_SetString(PyExc_ValueError, "second argument must have a write() method");
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
346 return NULL;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
347 }
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
348
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
349 if (ensure_cctx(self)) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
350 return NULL;
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
351 }
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
352
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
353 zresult = ZSTD_CCtx_setPledgedSrcSize(self->cctx, sourceSize);
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
354 if (ZSTD_isError(zresult)) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
355 PyErr_Format(ZstdError, "error setting source size: %s",
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
356 ZSTD_getErrorName(zresult));
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
357 return NULL;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
358 }
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
359
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
360 /* Prevent free on uninitialized memory in finally. */
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
361 output.dst = PyMem_Malloc(outSize);
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
362 if (!output.dst) {
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
363 PyErr_NoMemory();
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
364 res = NULL;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
365 goto finally;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
366 }
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
367 output.size = outSize;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
368 output.pos = 0;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
369
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
370 input.src = NULL;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
371 input.size = 0;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
372 input.pos = 0;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
373
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
374 while (1) {
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
375 /* Try to read from source stream. */
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
376 readResult = PyObject_CallMethod(source, "read", "n", inSize);
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
377 if (!readResult) {
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
378 PyErr_SetString(ZstdError, "could not read() from source");
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
379 goto finally;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
380 }
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
381
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
382 PyBytes_AsStringAndSize(readResult, &readBuffer, &readSize);
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
383
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
384 /* If no data was read, we're at EOF. */
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
385 if (0 == readSize) {
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
386 break;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
387 }
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
388
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
389 totalRead += readSize;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
390
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
391 /* Send data to compressor */
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
392 input.src = readBuffer;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
393 input.size = readSize;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
394 input.pos = 0;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
395
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
396 while (input.pos < input.size) {
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
397 Py_BEGIN_ALLOW_THREADS
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
398 zresult = ZSTD_compress_generic(self->cctx, &output, &input, ZSTD_e_continue);
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
399 Py_END_ALLOW_THREADS
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
400
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
401 if (ZSTD_isError(zresult)) {
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
402 res = NULL;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
403 PyErr_Format(ZstdError, "zstd compress error: %s", ZSTD_getErrorName(zresult));
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
404 goto finally;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
405 }
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
406
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
407 if (output.pos) {
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
408 #if PY_MAJOR_VERSION >= 3
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
409 writeResult = PyObject_CallMethod(dest, "write", "y#",
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
410 #else
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
411 writeResult = PyObject_CallMethod(dest, "write", "s#",
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
412 #endif
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
413 output.dst, output.pos);
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
414 Py_XDECREF(writeResult);
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
415 totalWrite += output.pos;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
416 output.pos = 0;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
417 }
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
418 }
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
419
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
420 Py_CLEAR(readResult);
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
421 }
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
422
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
423 /* We've finished reading. Now flush the compressor stream. */
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
424 assert(input.pos == input.size);
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
425
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
426 while (1) {
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
427 Py_BEGIN_ALLOW_THREADS
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
428 zresult = ZSTD_compress_generic(self->cctx, &output, &input, ZSTD_e_end);
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
429 Py_END_ALLOW_THREADS
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
430
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
431 if (ZSTD_isError(zresult)) {
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
432 PyErr_Format(ZstdError, "error ending compression stream: %s",
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
433 ZSTD_getErrorName(zresult));
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
434 res = NULL;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
435 goto finally;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
436 }
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
437
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
438 if (output.pos) {
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
439 #if PY_MAJOR_VERSION >= 3
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
440 writeResult = PyObject_CallMethod(dest, "write", "y#",
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
441 #else
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
442 writeResult = PyObject_CallMethod(dest, "write", "s#",
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
443 #endif
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
444 output.dst, output.pos);
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
445 totalWrite += output.pos;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
446 Py_XDECREF(writeResult);
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
447 output.pos = 0;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
448 }
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
449
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
450 if (!zresult) {
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
451 break;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
452 }
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
453 }
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
454
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
455 totalReadPy = PyLong_FromSsize_t(totalRead);
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
456 totalWritePy = PyLong_FromSsize_t(totalWrite);
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
457 res = PyTuple_Pack(2, totalReadPy, totalWritePy);
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
458 Py_DECREF(totalReadPy);
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
459 Py_DECREF(totalWritePy);
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
460
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
461 finally:
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
462 if (output.dst) {
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
463 PyMem_Free(output.dst);
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
464 }
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
465
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
466 Py_XDECREF(readResult);
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
467
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
468 return res;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
469 }
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
470
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
471 PyDoc_STRVAR(ZstdCompressor_stream_reader__doc__,
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
472 "stream_reader(source, [size=0])\n"
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
473 "\n"
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
474 "Obtain an object that behaves like an I/O stream.\n"
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
475 "\n"
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
476 "The source object can be any object with a ``read(size)`` method\n"
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
477 "or an object that conforms to the buffer protocol.\n"
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
478 );
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
479
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
480 static ZstdCompressionReader* ZstdCompressor_stream_reader(ZstdCompressor* self, PyObject* args, PyObject* kwargs) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
481 static char* kwlist[] = {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
482 "source",
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
483 "size",
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
484 "read_size",
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
485 NULL
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
486 };
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
487
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
488 PyObject* source;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
489 unsigned long long sourceSize = ZSTD_CONTENTSIZE_UNKNOWN;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
490 size_t readSize = ZSTD_CStreamInSize();
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
491 ZstdCompressionReader* result = NULL;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
492
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
493 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O|Kk:stream_reader", kwlist,
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
494 &source, &sourceSize, &readSize)) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
495 return NULL;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
496 }
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
497
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
498 result = (ZstdCompressionReader*)PyObject_CallObject((PyObject*)&ZstdCompressionReaderType, NULL);
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
499 if (!result) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
500 return NULL;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
501 }
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
502
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
503 if (PyObject_HasAttrString(source, "read")) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
504 result->reader = source;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
505 Py_INCREF(source);
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
506 result->readSize = readSize;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
507 }
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
508 else if (1 == PyObject_CheckBuffer(source)) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
509 if (0 != PyObject_GetBuffer(source, &result->buffer, PyBUF_CONTIG_RO)) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
510 goto except;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
511 }
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
512
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
513 assert(result->buffer.len >= 0);
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
514
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
515 sourceSize = result->buffer.len;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
516 }
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
517 else {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
518 PyErr_SetString(PyExc_TypeError,
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
519 "must pass an object with a read() method or that conforms to the buffer protocol");
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
520 goto except;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
521 }
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
522
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
523 if (ensure_cctx(self)) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
524 goto except;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
525 }
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
526
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
527 result->compressor = self;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
528 Py_INCREF(self);
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
529 result->sourceSize = sourceSize;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
530
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
531 return result;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
532
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
533 except:
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
534 Py_CLEAR(result);
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
535
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
536 return NULL;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
537 }
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
538
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
539 PyDoc_STRVAR(ZstdCompressor_compress__doc__,
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
540 "compress(data)\n"
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
541 "\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
542 "Compress data in a single operation.\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
543 "\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
544 "This is the simplest mechanism to perform compression: simply pass in a\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
545 "value and get a compressed value back. It is almost the most prone to abuse.\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
546 "The input and output values must fit in memory, so passing in very large\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
547 "values can result in excessive memory usage. For this reason, one of the\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
548 "streaming based APIs is preferred for larger values.\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
549 );
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
550
30822
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
551 static PyObject* ZstdCompressor_compress(ZstdCompressor* self, PyObject* args, PyObject* kwargs) {
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
552 static char* kwlist[] = {
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
553 "data",
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
554 NULL
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
555 };
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
556
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
557 Py_buffer source;
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
558 size_t destSize;
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
559 PyObject* output = NULL;
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
560 size_t zresult;
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
561 ZSTD_outBuffer outBuffer;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
562 ZSTD_inBuffer inBuffer;
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
563
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
564 #if PY_MAJOR_VERSION >= 3
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
565 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "y*|O:compress",
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
566 #else
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
567 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s*|O:compress",
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
568 #endif
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
569 kwlist, &source)) {
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
570 return NULL;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
571 }
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
572
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
573 if (!PyBuffer_IsContiguous(&source, 'C') || source.ndim > 1) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
574 PyErr_SetString(PyExc_ValueError,
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
575 "data buffer should be contiguous and have at most one dimension");
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
576 goto finally;
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
577 }
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
578
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
579 if (ensure_cctx(self)) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
580 goto finally;
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
581 }
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
582
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
583 destSize = ZSTD_compressBound(source.len);
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
584 output = PyBytes_FromStringAndSize(NULL, destSize);
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
585 if (!output) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
586 goto finally;
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
587 }
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
588
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
589 zresult = ZSTD_CCtx_setPledgedSrcSize(self->cctx, source.len);
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
590 if (ZSTD_isError(zresult)) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
591 PyErr_Format(ZstdError, "error setting source size: %s",
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
592 ZSTD_getErrorName(zresult));
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
593 Py_CLEAR(output);
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
594 goto finally;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
595 }
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
596
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
597 inBuffer.src = source.buf;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
598 inBuffer.size = source.len;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
599 inBuffer.pos = 0;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
600
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
601 outBuffer.dst = PyBytes_AsString(output);
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
602 outBuffer.size = destSize;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
603 outBuffer.pos = 0;
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
604
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
605 Py_BEGIN_ALLOW_THREADS
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
606 /* By avoiding ZSTD_compress(), we don't necessarily write out content
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
607 size. This means the argument to ZstdCompressor to control frame
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
608 parameters is honored. */
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
609 zresult = ZSTD_compress_generic(self->cctx, &outBuffer, &inBuffer, ZSTD_e_end);
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
610 Py_END_ALLOW_THREADS
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
611
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
612 if (ZSTD_isError(zresult)) {
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
613 PyErr_Format(ZstdError, "cannot compress: %s", ZSTD_getErrorName(zresult));
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
614 Py_CLEAR(output);
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
615 goto finally;
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
616 }
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
617 else if (zresult) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
618 PyErr_SetString(ZstdError, "unexpected partial frame flush");
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
619 Py_CLEAR(output);
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
620 goto finally;
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
621 }
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
622
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
623 Py_SIZE(output) = outBuffer.pos;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
624
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
625 finally:
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
626 PyBuffer_Release(&source);
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
627 return output;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
628 }
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
629
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
630 PyDoc_STRVAR(ZstdCompressionObj__doc__,
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
631 "compressobj()\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
632 "\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
633 "Return an object exposing ``compress(data)`` and ``flush()`` methods.\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
634 "\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
635 "The returned object exposes an API similar to ``zlib.compressobj`` and\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
636 "``bz2.BZ2Compressor`` so that callers can swap in the zstd compressor\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
637 "without changing how compression is performed.\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
638 );
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
639
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
640 static ZstdCompressionObj* ZstdCompressor_compressobj(ZstdCompressor* self, PyObject* args, PyObject* kwargs) {
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
641 static char* kwlist[] = {
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
642 "size",
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
643 NULL
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
644 };
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
645
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
646 unsigned long long inSize = ZSTD_CONTENTSIZE_UNKNOWN;
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
647 size_t outSize = ZSTD_CStreamOutSize();
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
648 ZstdCompressionObj* result = NULL;
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
649 size_t zresult;
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
650
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
651 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|K:compressobj", kwlist, &inSize)) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
652 return NULL;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
653 }
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
654
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
655 if (ensure_cctx(self)) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
656 return NULL;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
657 }
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
658
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
659 zresult = ZSTD_CCtx_setPledgedSrcSize(self->cctx, inSize);
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
660 if (ZSTD_isError(zresult)) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
661 PyErr_Format(ZstdError, "error setting source size: %s",
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
662 ZSTD_getErrorName(zresult));
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
663 return NULL;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
664 }
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
665
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
666 result = (ZstdCompressionObj*)PyObject_CallObject((PyObject*)&ZstdCompressionObjType, NULL);
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
667 if (!result) {
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
668 return NULL;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
669 }
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
670
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
671 result->output.dst = PyMem_Malloc(outSize);
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
672 if (!result->output.dst) {
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
673 PyErr_NoMemory();
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
674 Py_DECREF(result);
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
675 return NULL;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
676 }
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
677 result->output.size = outSize;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
678 result->compressor = self;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
679 Py_INCREF(result->compressor);
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
680
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
681 return result;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
682 }
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
683
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
684 PyDoc_STRVAR(ZstdCompressor_read_to_iter__doc__,
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
685 "read_to_iter(reader, [size=0, read_size=default, write_size=default])\n"
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
686 "Read uncompressed data from a reader and return an iterator\n"
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
687 "\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
688 "Returns an iterator of compressed data produced from reading from ``reader``.\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
689 "\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
690 "Uncompressed data will be obtained from ``reader`` by calling the\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
691 "``read(size)`` method of it. The source data will be streamed into a\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
692 "compressor. As compressed data is available, it will be exposed to the\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
693 "iterator.\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
694 "\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
695 "Data is read from the source in chunks of ``read_size``. Compressed chunks\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
696 "are at most ``write_size`` bytes. Both values default to the zstd input and\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
697 "and output defaults, respectively.\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
698 "\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
699 "The caller is partially in control of how fast data is fed into the\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
700 "compressor by how it consumes the returned iterator. The compressor will\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
701 "not consume from the reader unless the caller consumes from the iterator.\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
702 );
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
703
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
704 static ZstdCompressorIterator* ZstdCompressor_read_to_iter(ZstdCompressor* self, PyObject* args, PyObject* kwargs) {
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
705 static char* kwlist[] = {
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
706 "reader",
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
707 "size",
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
708 "read_size",
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
709 "write_size",
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
710 NULL
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
711 };
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
712
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
713 PyObject* reader;
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
714 unsigned long long sourceSize = ZSTD_CONTENTSIZE_UNKNOWN;
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
715 size_t inSize = ZSTD_CStreamInSize();
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
716 size_t outSize = ZSTD_CStreamOutSize();
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
717 ZstdCompressorIterator* result;
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
718 size_t zresult;
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
719
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
720 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O|Kkk:read_to_iter", kwlist,
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30830
diff changeset
721 &reader, &sourceSize, &inSize, &outSize)) {
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
722 return NULL;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
723 }
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
724
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
725 result = (ZstdCompressorIterator*)PyObject_CallObject((PyObject*)&ZstdCompressorIteratorType, NULL);
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
726 if (!result) {
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
727 return NULL;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
728 }
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
729 if (PyObject_HasAttrString(reader, "read")) {
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
730 result->reader = reader;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
731 Py_INCREF(result->reader);
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
732 }
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
733 else if (1 == PyObject_CheckBuffer(reader)) {
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
734 if (0 != PyObject_GetBuffer(reader, &result->buffer, PyBUF_CONTIG_RO)) {
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
735 goto except;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
736 }
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
737
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
738 sourceSize = result->buffer.len;
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
739 }
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
740 else {
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
741 PyErr_SetString(PyExc_ValueError,
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
742 "must pass an object with a read() method or conforms to buffer protocol");
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
743 goto except;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
744 }
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
745
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
746 if (ensure_cctx(self)) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
747 return NULL;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
748 }
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
749
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
750 zresult = ZSTD_CCtx_setPledgedSrcSize(self->cctx, sourceSize);
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
751 if (ZSTD_isError(zresult)) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
752 PyErr_Format(ZstdError, "error setting source size: %s",
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
753 ZSTD_getErrorName(zresult));
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
754 return NULL;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
755 }
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
756
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
757 result->compressor = self;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
758 Py_INCREF(result->compressor);
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
759
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
760 result->inSize = inSize;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
761 result->outSize = outSize;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
762
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
763 result->output.dst = PyMem_Malloc(outSize);
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
764 if (!result->output.dst) {
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
765 PyErr_NoMemory();
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
766 goto except;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
767 }
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
768 result->output.size = outSize;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
769
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
770 goto finally;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
771
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
772 except:
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
773 Py_CLEAR(result);
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
774
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
775 finally:
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
776 return result;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
777 }
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
778
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
779 PyDoc_STRVAR(ZstdCompressor_stream_writer___doc__,
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
780 "Create a context manager to write compressed data to an object.\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
781 "\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
782 "The passed object must have a ``write()`` method.\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
783 "\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
784 "The caller feeds input data to the object by calling ``compress(data)``.\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
785 "Compressed data is written to the argument given to this function.\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
786 "\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
787 "The function takes an optional ``size`` argument indicating the total size\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
788 "of the eventual input. If specified, the size will influence compression\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
789 "parameter tuning and could result in the size being written into the\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
790 "header of the compressed data.\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
791 "\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
792 "An optional ``write_size`` argument is also accepted. It defines the maximum\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
793 "byte size of chunks fed to ``write()``. By default, it uses the zstd default\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
794 "for a compressor output stream.\n"
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
795 );
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
796
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
797 static ZstdCompressionWriter* ZstdCompressor_stream_writer(ZstdCompressor* self, PyObject* args, PyObject* kwargs) {
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
798 static char* kwlist[] = {
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
799 "writer",
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
800 "size",
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
801 "write_size",
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
802 NULL
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
803 };
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
804
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
805 PyObject* writer;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
806 ZstdCompressionWriter* result;
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
807 unsigned long long sourceSize = ZSTD_CONTENTSIZE_UNKNOWN;
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
808 size_t outSize = ZSTD_CStreamOutSize();
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
809
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
810 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O|Kk:stream_writer", kwlist,
30895
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30830
diff changeset
811 &writer, &sourceSize, &outSize)) {
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
812 return NULL;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
813 }
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
814
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
815 if (!PyObject_HasAttrString(writer, "write")) {
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
816 PyErr_SetString(PyExc_ValueError, "must pass an object with a write() method");
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
817 return NULL;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
818 }
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
819
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
820 if (ensure_cctx(self)) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
821 return NULL;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
822 }
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
823
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
824 result = (ZstdCompressionWriter*)PyObject_CallObject((PyObject*)&ZstdCompressionWriterType, NULL);
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
825 if (!result) {
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
826 return NULL;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
827 }
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
828
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
829 result->compressor = self;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
830 Py_INCREF(result->compressor);
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
831
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
832 result->writer = writer;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
833 Py_INCREF(result->writer);
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
834
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
835 result->sourceSize = sourceSize;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
836 result->outSize = outSize;
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
837 result->bytesCompressed = 0;
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
838
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
839 return result;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
840 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
841
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
842 typedef struct {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
843 void* sourceData;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
844 size_t sourceSize;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
845 } DataSource;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
846
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
847 typedef struct {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
848 DataSource* sources;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
849 Py_ssize_t sourcesSize;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
850 unsigned long long totalSourceSize;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
851 } DataSources;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
852
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
853 typedef struct {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
854 void* dest;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
855 Py_ssize_t destSize;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
856 BufferSegment* segments;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
857 Py_ssize_t segmentsSize;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
858 } DestBuffer;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
859
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
860 typedef enum {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
861 WorkerError_none = 0,
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
862 WorkerError_zstd = 1,
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
863 WorkerError_no_memory = 2,
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
864 WorkerError_nospace = 3,
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
865 } WorkerError;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
866
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
867 /**
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
868 * Holds state for an individual worker performing multi_compress_to_buffer work.
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
869 */
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
870 typedef struct {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
871 /* Used for compression. */
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
872 ZSTD_CCtx* cctx;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
873
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
874 /* What to compress. */
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
875 DataSource* sources;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
876 Py_ssize_t sourcesSize;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
877 Py_ssize_t startOffset;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
878 Py_ssize_t endOffset;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
879 unsigned long long totalSourceSize;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
880
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
881 /* Result storage. */
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
882 DestBuffer* destBuffers;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
883 Py_ssize_t destCount;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
884
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
885 /* Error tracking. */
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
886 WorkerError error;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
887 size_t zresult;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
888 Py_ssize_t errorOffset;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
889 } WorkerState;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
890
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
891 static void compress_worker(WorkerState* state) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
892 Py_ssize_t inputOffset = state->startOffset;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
893 Py_ssize_t remainingItems = state->endOffset - state->startOffset + 1;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
894 Py_ssize_t currentBufferStartOffset = state->startOffset;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
895 size_t zresult;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
896 void* newDest;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
897 size_t allocationSize;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
898 size_t boundSize;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
899 Py_ssize_t destOffset = 0;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
900 DataSource* sources = state->sources;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
901 DestBuffer* destBuffer;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
902
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
903 assert(!state->destBuffers);
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
904 assert(0 == state->destCount);
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
905
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
906 /*
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
907 * The total size of the compressed data is unknown until we actually
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
908 * compress data. That means we can't pre-allocate the exact size we need.
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
909 *
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
910 * There is a cost to every allocation and reallocation. So, it is in our
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
911 * interest to minimize the number of allocations.
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
912 *
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
913 * There is also a cost to too few allocations. If allocations are too
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
914 * large they may fail. If buffers are shared and all inputs become
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
915 * irrelevant at different lifetimes, then a reference to one segment
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
916 * in the buffer will keep the entire buffer alive. This leads to excessive
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
917 * memory usage.
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
918 *
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
919 * Our current strategy is to assume a compression ratio of 16:1 and
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
920 * allocate buffers of that size, rounded up to the nearest power of 2
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
921 * (because computers like round numbers). That ratio is greater than what
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
922 * most inputs achieve. This is by design: we don't want to over-allocate.
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
923 * But we don't want to under-allocate and lead to too many buffers either.
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
924 */
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
925
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
926 state->destCount = 1;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
927
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
928 state->destBuffers = calloc(1, sizeof(DestBuffer));
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
929 if (NULL == state->destBuffers) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
930 state->error = WorkerError_no_memory;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
931 return;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
932 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
933
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
934 destBuffer = &state->destBuffers[state->destCount - 1];
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
935
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
936 /*
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
937 * Rather than track bounds and grow the segments buffer, allocate space
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
938 * to hold remaining items then truncate when we're done with it.
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
939 */
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
940 destBuffer->segments = calloc(remainingItems, sizeof(BufferSegment));
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
941 if (NULL == destBuffer->segments) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
942 state->error = WorkerError_no_memory;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
943 return;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
944 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
945
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
946 destBuffer->segmentsSize = remainingItems;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
947
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
948 assert(state->totalSourceSize <= SIZE_MAX);
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
949 allocationSize = roundpow2((size_t)state->totalSourceSize >> 4);
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
950
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
951 /* If the maximum size of the output is larger than that, round up. */
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
952 boundSize = ZSTD_compressBound(sources[inputOffset].sourceSize);
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
953
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
954 if (boundSize > allocationSize) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
955 allocationSize = roundpow2(boundSize);
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
956 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
957
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
958 destBuffer->dest = malloc(allocationSize);
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
959 if (NULL == destBuffer->dest) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
960 state->error = WorkerError_no_memory;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
961 return;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
962 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
963
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
964 destBuffer->destSize = allocationSize;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
965
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
966 for (inputOffset = state->startOffset; inputOffset <= state->endOffset; inputOffset++) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
967 void* source = sources[inputOffset].sourceData;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
968 size_t sourceSize = sources[inputOffset].sourceSize;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
969 size_t destAvailable;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
970 void* dest;
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
971 ZSTD_outBuffer opOutBuffer;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
972 ZSTD_inBuffer opInBuffer;
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
973
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
974 destAvailable = destBuffer->destSize - destOffset;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
975 boundSize = ZSTD_compressBound(sourceSize);
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
976
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
977 /*
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
978 * Not enough space in current buffer to hold largest compressed output.
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
979 * So allocate and switch to a new output buffer.
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
980 */
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
981 if (boundSize > destAvailable) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
982 /*
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
983 * The downsizing of the existing buffer is optional. It should be cheap
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
984 * (unlike growing). So we just do it.
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
985 */
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
986 if (destAvailable) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
987 newDest = realloc(destBuffer->dest, destOffset);
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
988 if (NULL == newDest) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
989 state->error = WorkerError_no_memory;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
990 return;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
991 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
992
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
993 destBuffer->dest = newDest;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
994 destBuffer->destSize = destOffset;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
995 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
996
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
997 /* Truncate segments buffer. */
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
998 newDest = realloc(destBuffer->segments,
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
999 (inputOffset - currentBufferStartOffset + 1) * sizeof(BufferSegment));
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1000 if (NULL == newDest) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1001 state->error = WorkerError_no_memory;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1002 return;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1003 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1004
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1005 destBuffer->segments = newDest;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1006 destBuffer->segmentsSize = inputOffset - currentBufferStartOffset;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1007
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1008 /* Grow space for new struct. */
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1009 /* TODO consider over-allocating so we don't do this every time. */
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1010 newDest = realloc(state->destBuffers, (state->destCount + 1) * sizeof(DestBuffer));
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1011 if (NULL == newDest) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1012 state->error = WorkerError_no_memory;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1013 return;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1014 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1015
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1016 state->destBuffers = newDest;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1017 state->destCount++;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1018
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1019 destBuffer = &state->destBuffers[state->destCount - 1];
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1020
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1021 /* Don't take any chances with non-NULL pointers. */
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1022 memset(destBuffer, 0, sizeof(DestBuffer));
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1023
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1024 /**
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1025 * We could dynamically update allocation size based on work done so far.
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1026 * For now, keep is simple.
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1027 */
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1028 assert(state->totalSourceSize <= SIZE_MAX);
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1029 allocationSize = roundpow2((size_t)state->totalSourceSize >> 4);
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1030
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1031 if (boundSize > allocationSize) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1032 allocationSize = roundpow2(boundSize);
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1033 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1034
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1035 destBuffer->dest = malloc(allocationSize);
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1036 if (NULL == destBuffer->dest) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1037 state->error = WorkerError_no_memory;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1038 return;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1039 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1040
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1041 destBuffer->destSize = allocationSize;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1042 destAvailable = allocationSize;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1043 destOffset = 0;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1044
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1045 destBuffer->segments = calloc(remainingItems, sizeof(BufferSegment));
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1046 if (NULL == destBuffer->segments) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1047 state->error = WorkerError_no_memory;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1048 return;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1049 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1050
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1051 destBuffer->segmentsSize = remainingItems;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1052 currentBufferStartOffset = inputOffset;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1053 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1054
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1055 dest = (char*)destBuffer->dest + destOffset;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1056
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1057 opInBuffer.src = source;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1058 opInBuffer.size = sourceSize;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1059 opInBuffer.pos = 0;
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1060
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1061 opOutBuffer.dst = dest;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1062 opOutBuffer.size = destAvailable;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1063 opOutBuffer.pos = 0;
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1064
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1065 zresult = ZSTD_CCtx_setPledgedSrcSize(state->cctx, sourceSize);
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1066 if (ZSTD_isError(zresult)) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1067 state->error = WorkerError_zstd;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1068 state->zresult = zresult;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1069 state->errorOffset = inputOffset;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1070 break;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1071 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1072
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1073 zresult = ZSTD_compress_generic(state->cctx, &opOutBuffer, &opInBuffer, ZSTD_e_end);
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1074 if (ZSTD_isError(zresult)) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1075 state->error = WorkerError_zstd;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1076 state->zresult = zresult;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1077 state->errorOffset = inputOffset;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1078 break;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1079 }
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1080 else if (zresult) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1081 state->error = WorkerError_nospace;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1082 state->errorOffset = inputOffset;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1083 break;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1084 }
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1085
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1086 destBuffer->segments[inputOffset - currentBufferStartOffset].offset = destOffset;
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1087 destBuffer->segments[inputOffset - currentBufferStartOffset].length = opOutBuffer.pos;
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1088
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1089 destOffset += opOutBuffer.pos;
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1090 remainingItems--;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1091 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1092
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1093 if (destBuffer->destSize > destOffset) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1094 newDest = realloc(destBuffer->dest, destOffset);
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1095 if (NULL == newDest) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1096 state->error = WorkerError_no_memory;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1097 return;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1098 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1099
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1100 destBuffer->dest = newDest;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1101 destBuffer->destSize = destOffset;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1102 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1103 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1104
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1105 ZstdBufferWithSegmentsCollection* compress_from_datasources(ZstdCompressor* compressor,
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1106 DataSources* sources, Py_ssize_t threadCount) {
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1107 unsigned long long bytesPerWorker;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1108 POOL_ctx* pool = NULL;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1109 WorkerState* workerStates = NULL;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1110 Py_ssize_t i;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1111 unsigned long long workerBytes = 0;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1112 Py_ssize_t workerStartOffset = 0;
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1113 Py_ssize_t currentThread = 0;
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1114 int errored = 0;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1115 Py_ssize_t segmentsCount = 0;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1116 Py_ssize_t segmentIndex;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1117 PyObject* segmentsArg = NULL;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1118 ZstdBufferWithSegments* buffer;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1119 ZstdBufferWithSegmentsCollection* result = NULL;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1120
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1121 assert(sources->sourcesSize > 0);
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1122 assert(sources->totalSourceSize > 0);
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1123 assert(threadCount >= 1);
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1124
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1125 /* More threads than inputs makes no sense. */
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1126 threadCount = sources->sourcesSize < threadCount ? sources->sourcesSize
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1127 : threadCount;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1128
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1129 /* TODO lower thread count when input size is too small and threads would add
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1130 overhead. */
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1131
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1132 workerStates = PyMem_Malloc(threadCount * sizeof(WorkerState));
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1133 if (NULL == workerStates) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1134 PyErr_NoMemory();
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1135 goto finally;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1136 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1137
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1138 memset(workerStates, 0, threadCount * sizeof(WorkerState));
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1139
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1140 if (threadCount > 1) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1141 pool = POOL_create(threadCount, 1);
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1142 if (NULL == pool) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1143 PyErr_SetString(ZstdError, "could not initialize zstd thread pool");
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1144 goto finally;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1145 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1146 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1147
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1148 bytesPerWorker = sources->totalSourceSize / threadCount;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1149
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1150 for (i = 0; i < threadCount; i++) {
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1151 size_t zresult;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1152
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1153 workerStates[i].cctx = ZSTD_createCCtx();
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1154 if (!workerStates[i].cctx) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1155 PyErr_NoMemory();
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1156 goto finally;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1157 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1158
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1159 zresult = ZSTD_CCtx_setParametersUsingCCtxParams(workerStates[i].cctx,
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1160 compressor->params);
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1161 if (ZSTD_isError(zresult)) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1162 PyErr_Format(ZstdError, "could not set compression parameters: %s",
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1163 ZSTD_getErrorName(zresult));
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1164 goto finally;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1165 }
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1166
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1167 if (compressor->dict) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1168 if (compressor->dict->cdict) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1169 zresult = ZSTD_CCtx_refCDict(workerStates[i].cctx, compressor->dict->cdict);
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1170 }
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1171 else {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1172 zresult = ZSTD_CCtx_loadDictionary_advanced(
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1173 workerStates[i].cctx,
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1174 compressor->dict->dictData,
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1175 compressor->dict->dictSize,
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1176 ZSTD_dlm_byRef,
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1177 compressor->dict->dictType);
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1178 }
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1179
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1180 if (ZSTD_isError(zresult)) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1181 PyErr_Format(ZstdError, "could not load compression dictionary: %s",
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1182 ZSTD_getErrorName(zresult));
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1183 goto finally;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1184 }
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1185
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1186 }
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1187
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1188 workerStates[i].sources = sources->sources;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1189 workerStates[i].sourcesSize = sources->sourcesSize;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1190 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1191
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1192 Py_BEGIN_ALLOW_THREADS
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1193 for (i = 0; i < sources->sourcesSize; i++) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1194 workerBytes += sources->sources[i].sourceSize;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1195
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1196 /*
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1197 * The last worker/thread needs to handle all remaining work. Don't
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1198 * trigger it prematurely. Defer to the block outside of the loop
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1199 * to run the last worker/thread. But do still process this loop
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1200 * so workerBytes is correct.
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1201 */
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1202 if (currentThread == threadCount - 1) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1203 continue;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1204 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1205
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1206 if (workerBytes >= bytesPerWorker) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1207 assert(currentThread < threadCount);
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1208 workerStates[currentThread].totalSourceSize = workerBytes;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1209 workerStates[currentThread].startOffset = workerStartOffset;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1210 workerStates[currentThread].endOffset = i;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1211
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1212 if (threadCount > 1) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1213 POOL_add(pool, (POOL_function)compress_worker, &workerStates[currentThread]);
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1214 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1215 else {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1216 compress_worker(&workerStates[currentThread]);
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1217 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1218
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1219 currentThread++;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1220 workerStartOffset = i + 1;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1221 workerBytes = 0;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1222 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1223 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1224
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1225 if (workerBytes) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1226 assert(currentThread < threadCount);
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1227 workerStates[currentThread].totalSourceSize = workerBytes;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1228 workerStates[currentThread].startOffset = workerStartOffset;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1229 workerStates[currentThread].endOffset = sources->sourcesSize - 1;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1230
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1231 if (threadCount > 1) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1232 POOL_add(pool, (POOL_function)compress_worker, &workerStates[currentThread]);
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1233 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1234 else {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1235 compress_worker(&workerStates[currentThread]);
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1236 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1237 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1238
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1239 if (threadCount > 1) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1240 POOL_free(pool);
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1241 pool = NULL;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1242 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1243
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1244 Py_END_ALLOW_THREADS
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1245
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1246 for (i = 0; i < threadCount; i++) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1247 switch (workerStates[i].error) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1248 case WorkerError_no_memory:
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1249 PyErr_NoMemory();
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1250 errored = 1;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1251 break;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1252
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1253 case WorkerError_zstd:
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1254 PyErr_Format(ZstdError, "error compressing item %zd: %s",
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1255 workerStates[i].errorOffset, ZSTD_getErrorName(workerStates[i].zresult));
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1256 errored = 1;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1257 break;
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1258
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1259 case WorkerError_nospace:
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1260 PyErr_Format(ZstdError, "error compressing item %zd: not enough space in output",
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1261 workerStates[i].errorOffset);
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1262 errored = 1;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1263 break;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1264
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1265 default:
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1266 ;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1267 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1268
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1269 if (errored) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1270 break;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1271 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1272
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1273 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1274
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1275 if (errored) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1276 goto finally;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1277 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1278
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1279 segmentsCount = 0;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1280 for (i = 0; i < threadCount; i++) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1281 WorkerState* state = &workerStates[i];
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1282 segmentsCount += state->destCount;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1283 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1284
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1285 segmentsArg = PyTuple_New(segmentsCount);
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1286 if (NULL == segmentsArg) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1287 goto finally;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1288 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1289
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1290 segmentIndex = 0;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1291
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1292 for (i = 0; i < threadCount; i++) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1293 Py_ssize_t j;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1294 WorkerState* state = &workerStates[i];
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1295
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1296 for (j = 0; j < state->destCount; j++) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1297 DestBuffer* destBuffer = &state->destBuffers[j];
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1298 buffer = BufferWithSegments_FromMemory(destBuffer->dest, destBuffer->destSize,
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1299 destBuffer->segments, destBuffer->segmentsSize);
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1300
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1301 if (NULL == buffer) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1302 goto finally;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1303 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1304
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1305 /* Tell instance to use free() instsead of PyMem_Free(). */
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1306 buffer->useFree = 1;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1307
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1308 /*
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1309 * BufferWithSegments_FromMemory takes ownership of the backing memory.
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1310 * Unset it here so it doesn't get freed below.
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1311 */
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1312 destBuffer->dest = NULL;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1313 destBuffer->segments = NULL;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1314
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1315 PyTuple_SET_ITEM(segmentsArg, segmentIndex++, (PyObject*)buffer);
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1316 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1317 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1318
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1319 result = (ZstdBufferWithSegmentsCollection*)PyObject_CallObject(
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1320 (PyObject*)&ZstdBufferWithSegmentsCollectionType, segmentsArg);
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1321
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1322 finally:
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1323 Py_CLEAR(segmentsArg);
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1324
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1325 if (pool) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1326 POOL_free(pool);
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1327 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1328
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1329 if (workerStates) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1330 Py_ssize_t j;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1331
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1332 for (i = 0; i < threadCount; i++) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1333 WorkerState state = workerStates[i];
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1334
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1335 if (state.cctx) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1336 ZSTD_freeCCtx(state.cctx);
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1337 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1338
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1339 /* malloc() is used in worker thread. */
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1340
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1341 for (j = 0; j < state.destCount; j++) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1342 if (state.destBuffers) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1343 free(state.destBuffers[j].dest);
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1344 free(state.destBuffers[j].segments);
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1345 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1346 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1347
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1348
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1349 free(state.destBuffers);
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1350 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1351
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1352 PyMem_Free(workerStates);
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1353 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1354
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1355 return result;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1356 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1357
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1358 PyDoc_STRVAR(ZstdCompressor_multi_compress_to_buffer__doc__,
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1359 "Compress multiple pieces of data as a single operation\n"
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1360 "\n"
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1361 "Receives a ``BufferWithSegmentsCollection``, a ``BufferWithSegments``, or\n"
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1362 "a list of bytes like objects holding data to compress.\n"
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1363 "\n"
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1364 "Returns a ``BufferWithSegmentsCollection`` holding compressed data.\n"
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1365 "\n"
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1366 "This function is optimized to perform multiple compression operations as\n"
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1367 "as possible with as little overhead as possbile.\n"
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1368 );
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1369
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1370 static ZstdBufferWithSegmentsCollection* ZstdCompressor_multi_compress_to_buffer(ZstdCompressor* self, PyObject* args, PyObject* kwargs) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1371 static char* kwlist[] = {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1372 "data",
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1373 "threads",
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1374 NULL
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1375 };
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1376
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1377 PyObject* data;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1378 int threads = 0;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1379 Py_buffer* dataBuffers = NULL;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1380 DataSources sources;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1381 Py_ssize_t i;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1382 Py_ssize_t sourceCount = 0;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1383 ZstdBufferWithSegmentsCollection* result = NULL;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1384
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1385 memset(&sources, 0, sizeof(sources));
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1386
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1387 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O|i:multi_compress_to_buffer", kwlist,
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1388 &data, &threads)) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1389 return NULL;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1390 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1391
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1392 if (threads < 0) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1393 threads = cpu_count();
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1394 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1395
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1396 if (threads < 2) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1397 threads = 1;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1398 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1399
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1400 if (PyObject_TypeCheck(data, &ZstdBufferWithSegmentsType)) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1401 ZstdBufferWithSegments* buffer = (ZstdBufferWithSegments*)data;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1402
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1403 sources.sources = PyMem_Malloc(buffer->segmentCount * sizeof(DataSource));
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1404 if (NULL == sources.sources) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1405 PyErr_NoMemory();
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1406 goto finally;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1407 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1408
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1409 for (i = 0; i < buffer->segmentCount; i++) {
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1410 if (buffer->segments[i].length > SIZE_MAX) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1411 PyErr_Format(PyExc_ValueError,
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1412 "buffer segment %zd is too large for this platform", i);
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1413 goto finally;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1414 }
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1415
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1416 sources.sources[i].sourceData = (char*)buffer->data + buffer->segments[i].offset;
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1417 sources.sources[i].sourceSize = (size_t)buffer->segments[i].length;
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1418 sources.totalSourceSize += buffer->segments[i].length;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1419 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1420
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1421 sources.sourcesSize = buffer->segmentCount;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1422 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1423 else if (PyObject_TypeCheck(data, &ZstdBufferWithSegmentsCollectionType)) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1424 Py_ssize_t j;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1425 Py_ssize_t offset = 0;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1426 ZstdBufferWithSegments* buffer;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1427 ZstdBufferWithSegmentsCollection* collection = (ZstdBufferWithSegmentsCollection*)data;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1428
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1429 sourceCount = BufferWithSegmentsCollection_length(collection);
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1430
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1431 sources.sources = PyMem_Malloc(sourceCount * sizeof(DataSource));
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1432 if (NULL == sources.sources) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1433 PyErr_NoMemory();
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1434 goto finally;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1435 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1436
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1437 for (i = 0; i < collection->bufferCount; i++) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1438 buffer = collection->buffers[i];
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1439
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1440 for (j = 0; j < buffer->segmentCount; j++) {
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1441 if (buffer->segments[j].length > SIZE_MAX) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1442 PyErr_Format(PyExc_ValueError,
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1443 "buffer segment %zd in buffer %zd is too large for this platform",
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1444 j, i);
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1445 goto finally;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1446 }
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1447
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1448 sources.sources[offset].sourceData = (char*)buffer->data + buffer->segments[j].offset;
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1449 sources.sources[offset].sourceSize = (size_t)buffer->segments[j].length;
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1450 sources.totalSourceSize += buffer->segments[j].length;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1451
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1452 offset++;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1453 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1454 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1455
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1456 sources.sourcesSize = sourceCount;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1457 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1458 else if (PyList_Check(data)) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1459 sourceCount = PyList_GET_SIZE(data);
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1460
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1461 sources.sources = PyMem_Malloc(sourceCount * sizeof(DataSource));
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1462 if (NULL == sources.sources) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1463 PyErr_NoMemory();
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1464 goto finally;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1465 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1466
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1467 dataBuffers = PyMem_Malloc(sourceCount * sizeof(Py_buffer));
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1468 if (NULL == dataBuffers) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1469 PyErr_NoMemory();
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1470 goto finally;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1471 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1472
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1473 memset(dataBuffers, 0, sourceCount * sizeof(Py_buffer));
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1474
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1475 for (i = 0; i < sourceCount; i++) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1476 if (0 != PyObject_GetBuffer(PyList_GET_ITEM(data, i),
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1477 &dataBuffers[i], PyBUF_CONTIG_RO)) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1478 PyErr_Clear();
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1479 PyErr_Format(PyExc_TypeError, "item %zd not a bytes like object", i);
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1480 goto finally;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1481 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1482
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1483 sources.sources[i].sourceData = dataBuffers[i].buf;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1484 sources.sources[i].sourceSize = dataBuffers[i].len;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1485 sources.totalSourceSize += dataBuffers[i].len;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1486 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1487
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1488 sources.sourcesSize = sourceCount;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1489 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1490 else {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1491 PyErr_SetString(PyExc_TypeError, "argument must be list of BufferWithSegments");
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1492 goto finally;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1493 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1494
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1495 if (0 == sources.sourcesSize) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1496 PyErr_SetString(PyExc_ValueError, "no source elements found");
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1497 goto finally;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1498 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1499
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1500 if (0 == sources.totalSourceSize) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1501 PyErr_SetString(PyExc_ValueError, "source elements are empty");
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1502 goto finally;
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1503 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1504
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1505 if (sources.totalSourceSize > SIZE_MAX) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1506 PyErr_SetString(PyExc_ValueError, "sources are too large for this platform");
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1507 goto finally;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1508 }
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1509
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1510 result = compress_from_datasources(self, &sources, threads);
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1511
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1512 finally:
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1513 PyMem_Free(sources.sources);
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1514
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1515 if (dataBuffers) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1516 for (i = 0; i < sourceCount; i++) {
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1517 PyBuffer_Release(&dataBuffers[i]);
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1518 }
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1519
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1520 PyMem_Free(dataBuffers);
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1521 }
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1522
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1523 return result;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1524 }
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1525
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1526 static PyMethodDef ZstdCompressor_methods[] = {
30822
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
1527 { "compress", (PyCFunction)ZstdCompressor_compress,
b54a2984cdd4 zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30435
diff changeset
1528 METH_VARARGS | METH_KEYWORDS, ZstdCompressor_compress__doc__ },
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1529 { "compressobj", (PyCFunction)ZstdCompressor_compressobj,
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1530 METH_VARARGS | METH_KEYWORDS, ZstdCompressionObj__doc__ },
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1531 { "copy_stream", (PyCFunction)ZstdCompressor_copy_stream,
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1532 METH_VARARGS | METH_KEYWORDS, ZstdCompressor_copy_stream__doc__ },
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1533 { "stream_reader", (PyCFunction)ZstdCompressor_stream_reader,
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1534 METH_VARARGS | METH_KEYWORDS, ZstdCompressor_stream_reader__doc__ },
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1535 { "stream_writer", (PyCFunction)ZstdCompressor_stream_writer,
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1536 METH_VARARGS | METH_KEYWORDS, ZstdCompressor_stream_writer___doc__ },
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1537 { "read_to_iter", (PyCFunction)ZstdCompressor_read_to_iter,
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1538 METH_VARARGS | METH_KEYWORDS, ZstdCompressor_read_to_iter__doc__ },
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1539 /* TODO Remove deprecated API */
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1540 { "read_from", (PyCFunction)ZstdCompressor_read_to_iter,
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1541 METH_VARARGS | METH_KEYWORDS, ZstdCompressor_read_to_iter__doc__ },
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1542 /* TODO remove deprecated API */
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1543 { "write_to", (PyCFunction)ZstdCompressor_stream_writer,
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1544 METH_VARARGS | METH_KEYWORDS, ZstdCompressor_stream_writer___doc__ },
31796
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1545 { "multi_compress_to_buffer", (PyCFunction)ZstdCompressor_multi_compress_to_buffer,
e0dc40530c5a zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30895
diff changeset
1546 METH_VARARGS | METH_KEYWORDS, ZstdCompressor_multi_compress_to_buffer__doc__ },
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1547 { "memory_size", (PyCFunction)ZstdCompressor_memory_size,
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1548 METH_NOARGS, ZstdCompressor_memory_size__doc__ },
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1549 { "frame_progression", (PyCFunction)ZstdCompressor_frame_progression,
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31796
diff changeset
1550 METH_NOARGS, ZstdCompressor_frame_progression__doc__ },
30435
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1551 { NULL, NULL }
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1552 };
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1553
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1554 PyTypeObject ZstdCompressorType = {
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1555 PyVarObject_HEAD_INIT(NULL, 0)
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1556 "zstd.ZstdCompressor", /* tp_name */
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1557 sizeof(ZstdCompressor), /* tp_basicsize */
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1558 0, /* tp_itemsize */
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1559 (destructor)ZstdCompressor_dealloc, /* tp_dealloc */
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1560 0, /* tp_print */
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1561 0, /* tp_getattr */
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1562 0, /* tp_setattr */
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1563 0, /* tp_compare */
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1564 0, /* tp_repr */
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1565 0, /* tp_as_number */
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1566 0, /* tp_as_sequence */
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1567 0, /* tp_as_mapping */
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1568 0, /* tp_hash */
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1569 0, /* tp_call */
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1570 0, /* tp_str */
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1571 0, /* tp_getattro */
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1572 0, /* tp_setattro */
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1573 0, /* tp_as_buffer */
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1574 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /* tp_flags */
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1575 ZstdCompressor__doc__, /* tp_doc */
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1576 0, /* tp_traverse */
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1577 0, /* tp_clear */
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1578 0, /* tp_richcompare */
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1579 0, /* tp_weaklistoffset */
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1580 0, /* tp_iter */
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1581 0, /* tp_iternext */
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1582 ZstdCompressor_methods, /* tp_methods */
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1583 0, /* tp_members */
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1584 0, /* tp_getset */
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1585 0, /* tp_base */
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1586 0, /* tp_dict */
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1587 0, /* tp_descr_get */
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1588 0, /* tp_descr_set */
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1589 0, /* tp_dictoffset */
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1590 (initproc)ZstdCompressor_init, /* tp_init */
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1591 0, /* tp_alloc */
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1592 PyType_GenericNew, /* tp_new */
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1593 };
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1594
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1595 void compressor_module_init(PyObject* mod) {
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1596 Py_TYPE(&ZstdCompressorType) = &PyType_Type;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1597 if (PyType_Ready(&ZstdCompressorType) < 0) {
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1598 return;
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1599 }
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1600
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1601 Py_INCREF((PyObject*)&ZstdCompressorType);
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1602 PyModule_AddObject(mod, "ZstdCompressor",
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1603 (PyObject*)&ZstdCompressorType);
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
1604 }