FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/psd.c
Date: 2022-07-04 19:11:22
Exec Total Coverage
Lines: 165 320 51.6%
Branches: 99 180 55.0%

Line Branch Exec Source
1 /*
2 * Photoshop (PSD) image decoder
3 * Copyright (c) 2016 Jokyo Images
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 #include "bytestream.h"
23 #include "codec_internal.h"
24 #include "internal.h"
25
26 enum PsdCompr {
27 PSD_RAW,
28 PSD_RLE,
29 PSD_ZIP_WITHOUT_P,
30 PSD_ZIP_WITH_P,
31 };
32
33 enum PsdColorMode {
34 PSD_BITMAP,
35 PSD_GRAYSCALE,
36 PSD_INDEXED,
37 PSD_RGB,
38 PSD_CMYK,
39 PSD_MULTICHANNEL,
40 PSD_DUOTONE,
41 PSD_LAB,
42 };
43
44 typedef struct PSDContext {
45 AVClass *class;
46 AVFrame *picture;
47 AVCodecContext *avctx;
48 GetByteContext gb;
49
50 uint8_t * tmp;
51
52 uint16_t channel_count;
53 uint16_t channel_depth;
54
55 uint64_t uncompressed_size;
56 unsigned int pixel_size;/* 1 for 8 bits, 2 for 16 bits */
57 uint64_t line_size;/* length of src data (even width) */
58
59 int width;
60 int height;
61
62 enum PsdCompr compression;
63 enum PsdColorMode color_mode;
64
65 uint8_t palette[AVPALETTE_SIZE];
66 } PSDContext;
67
68 30 static int decode_header(PSDContext * s)
69 {
70 int signature, version, color_mode;
71 int64_t len_section;
72 30 int ret = 0;
73
74
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30 if (bytestream2_get_bytes_left(&s->gb) < 30) {/* File header section + color map data section length */
75 av_log(s->avctx, AV_LOG_ERROR, "Header too short to parse.\n");
76 return AVERROR_INVALIDDATA;
77 }
78
79 30 signature = bytestream2_get_le32(&s->gb);
80
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30 if (signature != MKTAG('8','B','P','S')) {
81 av_log(s->avctx, AV_LOG_ERROR, "Wrong signature %d.\n", signature);
82 return AVERROR_INVALIDDATA;
83 }
84
85 30 version = bytestream2_get_be16(&s->gb);
86
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30 if (version != 1) {
87 av_log(s->avctx, AV_LOG_ERROR, "Wrong version %d.\n", version);
88 return AVERROR_INVALIDDATA;
89 }
90
91 30 bytestream2_skip(&s->gb, 6);/* reserved */
92
93 30 s->channel_count = bytestream2_get_be16(&s->gb);
94
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30 if ((s->channel_count < 1) || (s->channel_count > 56)) {
95 av_log(s->avctx, AV_LOG_ERROR, "Invalid channel count %d.\n", s->channel_count);
96 return AVERROR_INVALIDDATA;
97 }
98
99 30 s->height = bytestream2_get_be32(&s->gb);
100
101
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30 if ((s->height > 30000) && (s->avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL)) {
102 av_log(s->avctx, AV_LOG_ERROR,
103 "Height > 30000 is experimental, add "
104 "'-strict %d' if you want to try to decode the picture.\n",
105 FF_COMPLIANCE_EXPERIMENTAL);
106 return AVERROR_EXPERIMENTAL;
107 }
108
109 30 s->width = bytestream2_get_be32(&s->gb);
110
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30 if ((s->width > 30000) && (s->avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL)) {
111 av_log(s->avctx, AV_LOG_ERROR,
112 "Width > 30000 is experimental, add "
113 "'-strict %d' if you want to try to decode the picture.\n",
114 FF_COMPLIANCE_EXPERIMENTAL);
115 return AVERROR_EXPERIMENTAL;
116 }
117
118
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30 if ((ret = ff_set_dimensions(s->avctx, s->width, s->height)) < 0)
119 return ret;
120
121 30 s->channel_depth = bytestream2_get_be16(&s->gb);
122
123 30 color_mode = bytestream2_get_be16(&s->gb);
124
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30 switch (color_mode) {
125 2 case 0:
126 2 s->color_mode = PSD_BITMAP;
127 2 break;
128 8 case 1:
129 8 s->color_mode = PSD_GRAYSCALE;
130 8 break;
131 2 case 2:
132 2 s->color_mode = PSD_INDEXED;
133 2 break;
134 16 case 3:
135 16 s->color_mode = PSD_RGB;
136 16 break;
137 case 4:
138 s->color_mode = PSD_CMYK;
139 break;
140 case 7:
141 s->color_mode = PSD_MULTICHANNEL;
142 break;
143 2 case 8:
144 2 s->color_mode = PSD_DUOTONE;
145 2 break;
146 case 9:
147 s->color_mode = PSD_LAB;
148 break;
149 default:
150 av_log(s->avctx, AV_LOG_ERROR, "Unknown color mode %d.\n", color_mode);
151 return AVERROR_INVALIDDATA;
152 }
153
154 /* color map data */
155 30 len_section = bytestream2_get_be32(&s->gb);
156
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30 if (len_section < 0) {
157 av_log(s->avctx, AV_LOG_ERROR, "Negative size for color map data section.\n");
158 return AVERROR_INVALIDDATA;
159 }
160
161
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30 if (bytestream2_get_bytes_left(&s->gb) < (len_section + 4)) { /* section and len next section */
162 av_log(s->avctx, AV_LOG_ERROR, "Incomplete file.\n");
163 return AVERROR_INVALIDDATA;
164 }
165
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30 if (len_section) {
166 int i,j;
167 4 memset(s->palette, 0xff, AVPALETTE_SIZE);
168
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16 for (j = HAVE_BIGENDIAN; j < 3 + HAVE_BIGENDIAN; j++)
169
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2592 for (i = 0; i < FFMIN(256, len_section / 3); i++)
170 2580 s->palette[i * 4 + (HAVE_BIGENDIAN ? j : 2 - j)] = bytestream2_get_byteu(&s->gb);
171 4 len_section -= i * 3;
172 }
173 30 bytestream2_skip(&s->gb, len_section);
174
175 /* image ressources */
176 30 len_section = bytestream2_get_be32(&s->gb);
177
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30 if (len_section < 0) {
178 av_log(s->avctx, AV_LOG_ERROR, "Negative size for image ressources section.\n");
179 return AVERROR_INVALIDDATA;
180 }
181
182
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30 if (bytestream2_get_bytes_left(&s->gb) < (len_section + 4)) { /* section and len next section */
183 av_log(s->avctx, AV_LOG_ERROR, "Incomplete file.\n");
184 return AVERROR_INVALIDDATA;
185 }
186 30 bytestream2_skip(&s->gb, len_section);
187
188 /* layers and masks */
189 30 len_section = bytestream2_get_be32(&s->gb);
190
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30 if (len_section < 0) {
191 av_log(s->avctx, AV_LOG_ERROR, "Negative size for layers and masks data section.\n");
192 return AVERROR_INVALIDDATA;
193 }
194
195
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30 if (bytestream2_get_bytes_left(&s->gb) < len_section) {
196 av_log(s->avctx, AV_LOG_ERROR, "Incomplete file.\n");
197 return AVERROR_INVALIDDATA;
198 }
199 30 bytestream2_skip(&s->gb, len_section);
200
201 /* image section */
202
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30 if (bytestream2_get_bytes_left(&s->gb) < 2) {
203 av_log(s->avctx, AV_LOG_ERROR, "File without image data section.\n");
204 return AVERROR_INVALIDDATA;
205 }
206
207 30 s->compression = bytestream2_get_be16(&s->gb);
208
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30 switch (s->compression) {
209 30 case 0:
210 case 1:
211 30 break;
212 case 2:
213 avpriv_request_sample(s->avctx, "ZIP without predictor compression");
214 return AVERROR_PATCHWELCOME;
215 case 3:
216 avpriv_request_sample(s->avctx, "ZIP with predictor compression");
217 return AVERROR_PATCHWELCOME;
218 default:
219 av_log(s->avctx, AV_LOG_ERROR, "Unknown compression %d.\n", s->compression);
220 return AVERROR_INVALIDDATA;
221 }
222
223 30 return ret;
224 }
225
226 8 static int decode_rle(PSDContext * s){
227 unsigned int scanline_count;
228 unsigned int sl, count;
229 8 unsigned long target_index = 0;
230 unsigned int p;
231 int8_t rle_char;
232 unsigned int repeat_count;
233 uint8_t v;
234
235 8 scanline_count = s->height * s->channel_count;
236
237 /* scanline table */
238
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8 if (bytestream2_get_bytes_left(&s->gb) < scanline_count * 2) {
239 av_log(s->avctx, AV_LOG_ERROR, "Not enough data for rle scanline table.\n");
240 return AVERROR_INVALIDDATA;
241 }
242 8 bytestream2_skip(&s->gb, scanline_count * 2);/* size of each scanline */
243
244 /* decode rle data scanline by scanline */
245
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2812 for (sl = 0; sl < scanline_count; sl++) {
246 2804 count = 0;
247
248
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21344 while (count < s->line_size) {
249 18540 rle_char = bytestream2_get_byte(&s->gb);
250
251
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18540 if (rle_char <= 0) {/* byte repeat */
252 12340 repeat_count = rle_char * -1;
253
254
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12340 if (bytestream2_get_bytes_left(&s->gb) < 1) {
255 av_log(s->avctx, AV_LOG_ERROR, "Not enough data for rle scanline.\n");
256 return AVERROR_INVALIDDATA;
257 }
258
259
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12340 if (target_index + repeat_count >= s->uncompressed_size) {
260 av_log(s->avctx, AV_LOG_ERROR, "Invalid rle char.\n");
261 return AVERROR_INVALIDDATA;
262 }
263
264 12340 v = bytestream2_get_byte(&s->gb);
265
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222692 for (p = 0; p <= repeat_count; p++) {
266 210352 s->tmp[target_index++] = v;
267 }
268 12340 count += repeat_count + 1;
269 } else {
270
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6200 if (bytestream2_get_bytes_left(&s->gb) < rle_char) {
271 av_log(s->avctx, AV_LOG_ERROR, "Not enough data for rle scanline.\n");
272 return AVERROR_INVALIDDATA;
273 }
274
275
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6200 if (target_index + rle_char >= s->uncompressed_size) {
276 av_log(s->avctx, AV_LOG_ERROR, "Invalid rle char.\n");
277 return AVERROR_INVALIDDATA;
278 }
279
280
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250010 for (p = 0; p <= rle_char; p++) {
281 243810 v = bytestream2_get_byte(&s->gb);
282 243810 s->tmp[target_index++] = v;
283 }
284 6200 count += rle_char + 1;
285 }
286 }
287 }
288
289 8 return 0;
290 }
291
292 30 static int decode_frame(AVCodecContext *avctx, AVFrame *picture,
293 int *got_frame, AVPacket *avpkt)
294 {
295 int ret;
296 uint8_t *ptr;
297 const uint8_t *ptr_data;
298 int index_out, c, y, x, p;
299 30 uint8_t eq_channel[4] = {2,0,1,3};/* RGBA -> GBRA channel order */
300 uint8_t plane_number;
301
302 30 PSDContext *s = avctx->priv_data;
303 30 s->avctx = avctx;
304 30 s->channel_count = 0;
305 30 s->channel_depth = 0;
306 30 s->tmp = NULL;
307 30 s->line_size = 0;
308
309 30 bytestream2_init(&s->gb, avpkt->data, avpkt->size);
310
311
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30 if ((ret = decode_header(s)) < 0)
312 return ret;
313
314 30 s->pixel_size = s->channel_depth >> 3;/* in byte */
315 30 s->line_size = s->width * s->pixel_size;
316
317
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30 switch (s->color_mode) {
318 2 case PSD_BITMAP:
319
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2 if (s->channel_depth != 1 || s->channel_count != 1) {
320 av_log(s->avctx, AV_LOG_ERROR,
321 "Invalid bitmap file (channel_depth %d, channel_count %d)\n",
322 s->channel_depth, s->channel_count);
323 return AVERROR_INVALIDDATA;
324 }
325 2 s->line_size = s->width + 7 >> 3;
326 2 avctx->pix_fmt = AV_PIX_FMT_MONOWHITE;
327 2 break;
328 2 case PSD_INDEXED:
329
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2 if (s->channel_depth != 8 || s->channel_count != 1) {
330 av_log(s->avctx, AV_LOG_ERROR,
331 "Invalid indexed file (channel_depth %d, channel_count %d)\n",
332 s->channel_depth, s->channel_count);
333 return AVERROR_INVALIDDATA;
334 }
335 2 avctx->pix_fmt = AV_PIX_FMT_PAL8;
336 2 break;
337 case PSD_CMYK:
338 if (s->channel_count == 4) {
339 if (s->channel_depth == 8) {
340 avctx->pix_fmt = AV_PIX_FMT_GBRP;
341 } else if (s->channel_depth == 16) {
342 avctx->pix_fmt = AV_PIX_FMT_GBRP16BE;
343 } else {
344 avpriv_report_missing_feature(avctx, "channel depth %d for cmyk", s->channel_depth);
345 return AVERROR_PATCHWELCOME;
346 }
347 } else if (s->channel_count == 5) {
348 if (s->channel_depth == 8) {
349 avctx->pix_fmt = AV_PIX_FMT_GBRAP;
350 } else if (s->channel_depth == 16) {
351 avctx->pix_fmt = AV_PIX_FMT_GBRAP16BE;
352 } else {
353 avpriv_report_missing_feature(avctx, "channel depth %d for cmyk", s->channel_depth);
354 return AVERROR_PATCHWELCOME;
355 }
356 } else {
357 avpriv_report_missing_feature(avctx, "channel count %d for cmyk", s->channel_count);
358 return AVERROR_PATCHWELCOME;
359 }
360 break;
361 16 case PSD_RGB:
362
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16 if (s->channel_count == 3) {
363
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10 if (s->channel_depth == 8) {
364 6 avctx->pix_fmt = AV_PIX_FMT_GBRP;
365
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4 } else if (s->channel_depth == 16) {
366 4 avctx->pix_fmt = AV_PIX_FMT_GBRP16BE;
367 } else {
368 avpriv_report_missing_feature(avctx, "channel depth %d for rgb", s->channel_depth);
369 return AVERROR_PATCHWELCOME;
370 }
371
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6 } else if (s->channel_count == 4) {
372
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6 if (s->channel_depth == 8) {
373 4 avctx->pix_fmt = AV_PIX_FMT_GBRAP;
374
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2 } else if (s->channel_depth == 16) {
375 2 avctx->pix_fmt = AV_PIX_FMT_GBRAP16BE;
376 } else {
377 avpriv_report_missing_feature(avctx, "channel depth %d for rgb", s->channel_depth);
378 return AVERROR_PATCHWELCOME;
379 }
380 } else {
381 avpriv_report_missing_feature(avctx, "channel count %d for rgb", s->channel_count);
382 return AVERROR_PATCHWELCOME;
383 }
384 16 break;
385 2 case PSD_DUOTONE:
386 2 av_log(avctx, AV_LOG_WARNING, "ignoring unknown duotone specification.\n");
387 10 case PSD_GRAYSCALE:
388
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10 if (s->channel_count == 1) {
389
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6 if (s->channel_depth == 8) {
390 4 avctx->pix_fmt = AV_PIX_FMT_GRAY8;
391
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2 } else if (s->channel_depth == 16) {
392 2 avctx->pix_fmt = AV_PIX_FMT_GRAY16BE;
393 } else if (s->channel_depth == 32) {
394 avctx->pix_fmt = AV_PIX_FMT_GRAYF32BE;
395 } else {
396 avpriv_report_missing_feature(avctx, "channel depth %d for grayscale", s->channel_depth);
397 return AVERROR_PATCHWELCOME;
398 }
399
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4 } else if (s->channel_count == 2) {
400
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4 if (s->channel_depth == 8) {
401 2 avctx->pix_fmt = AV_PIX_FMT_YA8;
402
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2 } else if (s->channel_depth == 16) {
403 2 avctx->pix_fmt = AV_PIX_FMT_YA16BE;
404 } else {
405 avpriv_report_missing_feature(avctx, "channel depth %d for grayscale", s->channel_depth);
406 return AVERROR_PATCHWELCOME;
407 }
408 } else {
409 avpriv_report_missing_feature(avctx, "channel count %d for grayscale", s->channel_count);
410 return AVERROR_PATCHWELCOME;
411 }
412 10 break;
413 default:
414 avpriv_report_missing_feature(avctx, "color mode %d", s->color_mode);
415 return AVERROR_PATCHWELCOME;
416 }
417
418 30 s->uncompressed_size = s->line_size * s->height * s->channel_count;
419
420
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30 if ((ret = ff_get_buffer(avctx, picture, 0)) < 0)
421 return ret;
422
423 /* decode picture if need */
424
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30 if (s->compression == PSD_RLE) {
425 8 s->tmp = av_malloc(s->uncompressed_size);
426
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8 if (!s->tmp)
427 return AVERROR(ENOMEM);
428
429 8 ret = decode_rle(s);
430
431
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8 if (ret < 0) {
432 av_freep(&s->tmp);
433 return ret;
434 }
435
436 8 ptr_data = s->tmp;
437 } else {
438
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22 if (bytestream2_get_bytes_left(&s->gb) < s->uncompressed_size) {
439 av_log(s->avctx, AV_LOG_ERROR, "Not enough data for raw image data section.\n");
440 return AVERROR_INVALIDDATA;
441 }
442 22 ptr_data = s->gb.buffer;
443 }
444
445 /* Store data */
446
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30 if ((avctx->pix_fmt == AV_PIX_FMT_YA8)||(avctx->pix_fmt == AV_PIX_FMT_YA16BE)){/* Interleaved */
447 4 ptr = picture->data[0];
448
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12 for (c = 0; c < s->channel_count; c++) {
449
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1032 for (y = 0; y < s->height; y++) {
450
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132096 for (x = 0; x < s->width; x++) {
451 131072 index_out = y * picture->linesize[0] + x * s->channel_count * s->pixel_size + c * s->pixel_size;
452
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327680 for (p = 0; p < s->pixel_size; p++) {
453 196608 ptr[index_out + p] = *ptr_data;
454 196608 ptr_data ++;
455 }
456 }
457 }
458 }
459
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26 } else if (s->color_mode == PSD_CMYK) {
460 uint8_t *dst[4] = { picture->data[0], picture->data[1], picture->data[2], picture->data[3] };
461 const uint8_t *src[5] = { ptr_data };
462 src[1] = src[0] + s->line_size * s->height;
463 src[2] = src[1] + s->line_size * s->height;
464 src[3] = src[2] + s->line_size * s->height;
465 src[4] = src[3] + s->line_size * s->height;
466 if (s->channel_depth == 8) {
467 for (y = 0; y < s->height; y++) {
468 for (x = 0; x < s->width; x++) {
469 int k = src[3][x];
470 int r = src[0][x] * k;
471 int g = src[1][x] * k;
472 int b = src[2][x] * k;
473 dst[0][x] = g * 257 >> 16;
474 dst[1][x] = b * 257 >> 16;
475 dst[2][x] = r * 257 >> 16;
476 }
477 dst[0] += picture->linesize[0];
478 dst[1] += picture->linesize[1];
479 dst[2] += picture->linesize[2];
480 src[0] += s->line_size;
481 src[1] += s->line_size;
482 src[2] += s->line_size;
483 src[3] += s->line_size;
484 }
485 if (avctx->pix_fmt == AV_PIX_FMT_GBRAP) {
486 for (y = 0; y < s->height; y++) {
487 memcpy(dst[3], src[4], s->line_size);
488 src[4] += s->line_size;
489 dst[3] += picture->linesize[3];
490 }
491 }
492 } else {
493 for (y = 0; y < s->height; y++) {
494 for (x = 0; x < s->width; x++) {
495 int64_t k = AV_RB16(&src[3][x * 2]);
496 int64_t r = AV_RB16(&src[0][x * 2]) * k;
497 int64_t g = AV_RB16(&src[1][x * 2]) * k;
498 int64_t b = AV_RB16(&src[2][x * 2]) * k;
499 AV_WB16(&dst[0][x * 2], g * 65537 >> 32);
500 AV_WB16(&dst[1][x * 2], b * 65537 >> 32);
501 AV_WB16(&dst[2][x * 2], r * 65537 >> 32);
502 }
503 dst[0] += picture->linesize[0];
504 dst[1] += picture->linesize[1];
505 dst[2] += picture->linesize[2];
506 src[0] += s->line_size;
507 src[1] += s->line_size;
508 src[2] += s->line_size;
509 src[3] += s->line_size;
510 }
511 if (avctx->pix_fmt == AV_PIX_FMT_GBRAP16BE) {
512 for (y = 0; y < s->height; y++) {
513 memcpy(dst[3], src[4], s->line_size);
514 src[4] += s->line_size;
515 dst[3] += picture->linesize[3];
516 }
517 }
518 }
519 } else {/* Planar */
520
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26 if (s->channel_count == 1)/* gray 8 or gray 16be */
521 10 eq_channel[0] = 0;/* assign first channel, to first plane */
522
523
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90 for (c = 0; c < s->channel_count; c++) {
524 64 plane_number = eq_channel[c];
525 64 ptr = picture->data[plane_number];/* get the right plane */
526
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8238 for (y = 0; y < s->height; y++) {
527 8174 memcpy(ptr, ptr_data, s->line_size);
528 8174 ptr += picture->linesize[plane_number];
529 8174 ptr_data += s->line_size;
530 }
531 }
532 }
533
534
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30 if (s->color_mode == PSD_INDEXED) {
535 2 picture->palette_has_changed = 1;
536 2 memcpy(picture->data[1], s->palette, AVPALETTE_SIZE);
537 }
538
539 30 av_freep(&s->tmp);
540
541 30 picture->pict_type = AV_PICTURE_TYPE_I;
542 30 *got_frame = 1;
543
544 30 return avpkt->size;
545 }
546
547 const FFCodec ff_psd_decoder = {
548 .p.name = "psd",
549 .p.long_name = NULL_IF_CONFIG_SMALL("Photoshop PSD file"),
550 .p.type = AVMEDIA_TYPE_VIDEO,
551 .p.id = AV_CODEC_ID_PSD,
552 .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
553 .priv_data_size = sizeof(PSDContext),
554 FF_CODEC_DECODE_CB(decode_frame),
555 };
556