forked from uploadcare/pillow-simd
-
Notifications
You must be signed in to change notification settings - Fork 0
/
_webp.c
295 lines (255 loc) · 8.53 KB
/
_webp.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
#define PY_SSIZE_T_CLEAN
#include <Python.h>
#include "py3.h"
#include <webp/encode.h>
#include <webp/decode.h>
#include <webp/types.h>
#ifdef HAVE_WEBPMUX
#include <webp/mux.h>
#endif
PyObject* WebPEncode_wrapper(PyObject* self, PyObject* args)
{
int width;
int height;
int lossless;
float quality_factor;
uint8_t *rgb;
uint8_t *icc_bytes;
uint8_t *exif_bytes;
uint8_t *output;
char *mode;
Py_ssize_t size;
Py_ssize_t icc_size;
Py_ssize_t exif_size;
size_t ret_size;
if (!PyArg_ParseTuple(args, "s#iiifss#s#",
(char**)&rgb, &size, &width, &height, &lossless, &quality_factor, &mode,
&icc_bytes, &icc_size, &exif_bytes, &exif_size)) {
Py_RETURN_NONE;
}
if (strcmp(mode, "RGBA")==0){
if (size < width * height * 4){
Py_RETURN_NONE;
}
#if WEBP_ENCODER_ABI_VERSION >= 0x0100
if (lossless) {
ret_size = WebPEncodeLosslessRGBA(rgb, width, height, 4* width, &output);
} else
#endif
{
ret_size = WebPEncodeRGBA(rgb, width, height, 4* width, quality_factor, &output);
}
} else if (strcmp(mode, "RGB")==0){
if (size < width * height * 3){
Py_RETURN_NONE;
}
#if WEBP_ENCODER_ABI_VERSION >= 0x0100
if (lossless) {
ret_size = WebPEncodeLosslessRGB(rgb, width, height, 3* width, &output);
} else
#endif
{
ret_size = WebPEncodeRGB(rgb, width, height, 3* width, quality_factor, &output);
}
} else {
Py_RETURN_NONE;
}
#ifndef HAVE_WEBPMUX
if (ret_size > 0) {
PyObject *ret = PyBytes_FromStringAndSize((char*)output, ret_size);
free(output);
return ret;
}
#else
{
/* I want to truncate the *_size items that get passed into webp
data. Pypy2.1.0 had some issues where the Py_ssize_t items had
data in the upper byte. (Not sure why, it shouldn't have been there)
*/
int i_icc_size = (int)icc_size;
int i_exif_size = (int)exif_size;
WebPData output_data = {0};
WebPData image = { output, ret_size };
WebPData icc_profile = { icc_bytes, i_icc_size };
WebPData exif = { exif_bytes, i_exif_size };
WebPMuxError err;
int dbg = 0;
int copy_data = 0; // value 1 indicates given data WILL be copied to the mux
// and value 0 indicates data will NOT be copied.
WebPMux* mux = WebPMuxNew();
WebPMuxSetImage(mux, &image, copy_data);
if (dbg) {
/* was getting %ld icc_size == 0, icc_size>0 was true */
fprintf(stderr, "icc size %d, %d \n", i_icc_size, i_icc_size > 0);
}
if (i_icc_size > 0) {
if (dbg) {
fprintf (stderr, "Adding ICC Profile\n");
}
err = WebPMuxSetChunk(mux, "ICCP", &icc_profile, copy_data);
if (dbg && err == WEBP_MUX_INVALID_ARGUMENT) {
fprintf(stderr, "Invalid ICC Argument\n");
} else if (dbg && err == WEBP_MUX_MEMORY_ERROR) {
fprintf(stderr, "ICC Memory Error\n");
}
}
if (dbg) {
fprintf(stderr, "exif size %d \n", i_exif_size);
}
if (i_exif_size > 0) {
if (dbg){
fprintf (stderr, "Adding Exif Data\n");
}
err = WebPMuxSetChunk(mux, "EXIF", &exif, copy_data);
if (dbg && err == WEBP_MUX_INVALID_ARGUMENT) {
fprintf(stderr, "Invalid Exif Argument\n");
} else if (dbg && err == WEBP_MUX_MEMORY_ERROR) {
fprintf(stderr, "Exif Memory Error\n");
}
}
WebPMuxAssemble(mux, &output_data);
WebPMuxDelete(mux);
free(output);
ret_size = output_data.size;
if (ret_size > 0) {
PyObject *ret = PyBytes_FromStringAndSize((char*)output_data.bytes, ret_size);
WebPDataClear(&output_data);
return ret;
}
}
#endif
Py_RETURN_NONE;
}
PyObject* WebPDecode_wrapper(PyObject* self, PyObject* args)
{
PyBytesObject *webp_string;
const uint8_t *webp;
Py_ssize_t size;
PyObject *ret = Py_None, *bytes = NULL, *pymode = NULL, *icc_profile = NULL, *exif = NULL;
WebPDecoderConfig config;
VP8StatusCode vp8_status_code = VP8_STATUS_OK;
char* mode = "RGB";
if (!PyArg_ParseTuple(args, "S", &webp_string)) {
Py_RETURN_NONE;
}
if (!WebPInitDecoderConfig(&config)) {
Py_RETURN_NONE;
}
PyBytes_AsStringAndSize((PyObject *) webp_string, (char**)&webp, &size);
vp8_status_code = WebPGetFeatures(webp, size, &config.input);
if (vp8_status_code == VP8_STATUS_OK) {
// If we don't set it, we don't get alpha.
// Initialized to MODE_RGB
if (config.input.has_alpha) {
config.output.colorspace = MODE_RGBA;
mode = "RGBA";
}
#ifndef HAVE_WEBPMUX
vp8_status_code = WebPDecode(webp, size, &config);
#else
{
int copy_data = 0;
WebPData data = { webp, size };
WebPMuxFrameInfo image;
WebPData icc_profile_data = {0};
WebPData exif_data = {0};
WebPMux* mux = WebPMuxCreate(&data, copy_data);
if (NULL == mux)
goto end;
if (WEBP_MUX_OK != WebPMuxGetFrame(mux, 1, &image))
{
WebPMuxDelete(mux);
goto end;
}
webp = image.bitstream.bytes;
size = image.bitstream.size;
vp8_status_code = WebPDecode(webp, size, &config);
if (WEBP_MUX_OK == WebPMuxGetChunk(mux, "ICCP", &icc_profile_data))
icc_profile = PyBytes_FromStringAndSize((const char*)icc_profile_data.bytes, icc_profile_data.size);
if (WEBP_MUX_OK == WebPMuxGetChunk(mux, "EXIF", &exif_data))
exif = PyBytes_FromStringAndSize((const char*)exif_data.bytes, exif_data.size);
WebPDataClear(&image.bitstream);
WebPMuxDelete(mux);
}
#endif
}
if (vp8_status_code != VP8_STATUS_OK)
goto end;
if (config.output.colorspace < MODE_YUV) {
bytes = PyBytes_FromStringAndSize((char *)config.output.u.RGBA.rgba,
config.output.u.RGBA.size);
} else {
// Skipping YUV for now. Need Test Images.
// UNDONE -- unclear if we'll ever get here if we set mode_rgb*
bytes = PyBytes_FromStringAndSize((char *)config.output.u.YUVA.y,
config.output.u.YUVA.y_size);
}
#if PY_VERSION_HEX >= 0x03000000
pymode = PyUnicode_FromString(mode);
#else
pymode = PyString_FromString(mode);
#endif
ret = Py_BuildValue("SiiSSS", bytes, config.output.width,
config.output.height, pymode,
NULL == icc_profile ? Py_None : icc_profile,
NULL == exif ? Py_None : exif);
end:
WebPFreeDecBuffer(&config.output);
Py_XDECREF(bytes);
Py_XDECREF(pymode);
Py_XDECREF(icc_profile);
Py_XDECREF(exif);
if (Py_None == ret)
Py_RETURN_NONE;
return ret;
}
// Return the decoder's version number, packed in hexadecimal using 8bits for
// each of major/minor/revision. E.g: v2.5.7 is 0x020507.
PyObject* WebPDecoderVersion_wrapper(PyObject* self, PyObject* args){
return Py_BuildValue("i", WebPGetDecoderVersion());
}
/*
* The version of webp that ships with (0.1.3) Ubuntu 12.04 doesn't handle alpha well.
* Files that are valid with 0.3 are reported as being invalid.
*/
PyObject* WebPDecoderBuggyAlpha_wrapper(PyObject* self, PyObject* args){
return Py_BuildValue("i", WebPGetDecoderVersion()==0x0103);
}
static PyMethodDef webpMethods[] =
{
{"WebPEncode", WebPEncode_wrapper, METH_VARARGS, "WebPEncode"},
{"WebPDecode", WebPDecode_wrapper, METH_VARARGS, "WebPDecode"},
{"WebPDecoderVersion", WebPDecoderVersion_wrapper, METH_VARARGS, "WebPVersion"},
{"WebPDecoderBuggyAlpha", WebPDecoderBuggyAlpha_wrapper, METH_VARARGS, "WebPDecoderBuggyAlpha"},
{NULL, NULL}
};
void addMuxFlagToModule(PyObject* m) {
#ifdef HAVE_WEBPMUX
PyModule_AddObject(m, "HAVE_WEBPMUX", Py_True);
#else
PyModule_AddObject(m, "HAVE_WEBPMUX", Py_False);
#endif
}
#if PY_VERSION_HEX >= 0x03000000
PyMODINIT_FUNC
PyInit__webp(void) {
PyObject* m;
static PyModuleDef module_def = {
PyModuleDef_HEAD_INIT,
"_webp", /* m_name */
NULL, /* m_doc */
-1, /* m_size */
webpMethods, /* m_methods */
};
m = PyModule_Create(&module_def);
addMuxFlagToModule(m);
return m;
}
#else
PyMODINIT_FUNC
init_webp(void)
{
PyObject* m = Py_InitModule("_webp", webpMethods);
addMuxFlagToModule(m);
}
#endif