FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/dpx.c
Date: 2021-09-16 08:47:15
Exec Total Coverage
Lines: 239 467 51.2%
Branches: 107 238 45.0%

Line Branch Exec Source
1 /*
2 * DPX (.dpx) image decoder
3 * Copyright (c) 2009 Jimmy Christensen
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 "libavutil/avstring.h"
23 #include "libavutil/intreadwrite.h"
24 #include "libavutil/intfloat.h"
25 #include "libavutil/imgutils.h"
26 #include "libavutil/timecode.h"
27 #include "bytestream.h"
28 #include "avcodec.h"
29 #include "internal.h"
30
31 enum DPX_TRC {
32 DPX_TRC_USER_DEFINED = 0,
33 DPX_TRC_PRINTING_DENSITY = 1,
34 DPX_TRC_LINEAR = 2,
35 DPX_TRC_LOGARITHMIC = 3,
36 DPX_TRC_UNSPECIFIED_VIDEO = 4,
37 DPX_TRC_SMPTE_274 = 5,
38 DPX_TRC_ITU_R_709_4 = 6,
39 DPX_TRC_ITU_R_601_625 = 7,
40 DPX_TRC_ITU_R_601_525 = 8,
41 DPX_TRC_SMPTE_170 = 9,
42 DPX_TRC_ITU_R_624_4_PAL = 10,
43 DPX_TRC_Z_LINEAR = 11,
44 DPX_TRC_Z_HOMOGENEOUS = 12,
45 };
46
47 enum DPX_COL_SPEC {
48 DPX_COL_SPEC_USER_DEFINED = 0,
49 DPX_COL_SPEC_PRINTING_DENSITY = 1,
50 /* 2 = N/A */
51 /* 3 = N/A */
52 DPX_COL_SPEC_UNSPECIFIED_VIDEO = 4,
53 DPX_COL_SPEC_SMPTE_274 = 5,
54 DPX_COL_SPEC_ITU_R_709_4 = 6,
55 DPX_COL_SPEC_ITU_R_601_625 = 7,
56 DPX_COL_SPEC_ITU_R_601_525 = 8,
57 DPX_COL_SPEC_SMPTE_170 = 9,
58 DPX_COL_SPEC_ITU_R_624_4_PAL = 10,
59 /* 11 = N/A */
60 /* 12 = N/A */
61 };
62
63 4257978 static unsigned int read16(const uint8_t **ptr, int is_big)
64 {
65 unsigned int temp;
66
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4257978 if (is_big) {
67 4 temp = AV_RB16(*ptr);
68 } else {
69 4257974 temp = AV_RL16(*ptr);
70 }
71 4257978 *ptr += 2;
72 4257978 return temp;
73 }
74
75 3044636 static unsigned int read32(const uint8_t **ptr, int is_big)
76 {
77 unsigned int temp;
78
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3044636 if (is_big) {
79 21 temp = AV_RB32(*ptr);
80 } else {
81 3044615 temp = AV_RL32(*ptr);
82 }
83 3044636 *ptr += 4;
84 3044636 return temp;
85 }
86
87 static uint16_t read10in32_gray(const uint8_t **ptr, uint32_t *lbuf,
88 int *n_datum, int is_big, int shift)
89 {
90 uint16_t temp;
91
92 if (*n_datum)
93 (*n_datum)--;
94 else {
95 *lbuf = read32(ptr, is_big);
96 *n_datum = 2;
97 }
98
99 temp = *lbuf >> shift & 0x3FF;
100 *lbuf = *lbuf >> 10;
101
102 return temp;
103 }
104
105 9131904 static uint16_t read10in32(const uint8_t **ptr, uint32_t *lbuf,
106 int *n_datum, int is_big, int shift)
107 {
108
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9131904 if (*n_datum)
109 6087936 (*n_datum)--;
110 else {
111 3043968 *lbuf = read32(ptr, is_big);
112 3043968 *n_datum = 2;
113 }
114
115 9131904 *lbuf = *lbuf << 10 | *lbuf >> shift & 0x3FFFFF;
116
117 9131904 return *lbuf & 0x3FF;
118 }
119
120 static uint16_t read12in32(const uint8_t **ptr, uint32_t *lbuf,
121 int *n_datum, int is_big)
122 {
123 if (*n_datum)
124 (*n_datum)--;
125 else {
126 *lbuf = read32(ptr, is_big);
127 *n_datum = 7;
128 }
129
130 switch (*n_datum){
131 case 7: return *lbuf & 0xFFF;
132 case 6: return (*lbuf >> 12) & 0xFFF;
133 case 5: {
134 uint32_t c = *lbuf >> 24;
135 *lbuf = read32(ptr, is_big);
136 c |= *lbuf << 8;
137 return c & 0xFFF;
138 }
139 case 4: return (*lbuf >> 4) & 0xFFF;
140 case 3: return (*lbuf >> 16) & 0xFFF;
141 case 2: {
142 uint32_t c = *lbuf >> 28;
143 *lbuf = read32(ptr, is_big);
144 c |= *lbuf << 4;
145 return c & 0xFFF;
146 }
147 case 1: return (*lbuf >> 8) & 0xFFF;
148 default: return *lbuf >> 20;
149 }
150 }
151
152 93 static int decode_frame(AVCodecContext *avctx,
153 void *data,
154 int *got_frame,
155 AVPacket *avpkt)
156 {
157 93 const uint8_t *buf = avpkt->data;
158 93 int buf_size = avpkt->size;
159 93 AVFrame *const p = data;
160 uint8_t *ptr[AV_NUM_DATA_POINTERS];
161 93 uint32_t header_version, version = 0;
162 93 char creator[101] = { 0 };
163 93 char input_device[33] = { 0 };
164
165 unsigned int offset;
166 int magic_num, endian;
167 int x, y, stride, i, j, ret;
168 int w, h, bits_per_color, descriptor, elements, packing;
169 int yuv, color_trc, color_spec;
170 93 int encoding, need_align = 0, unpadded_10bit = 0;
171
172 93 unsigned int rgbBuffer = 0;
173 93 int n_datum = 0;
174
175
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93 if (avpkt->size <= 1634) {
176 av_log(avctx, AV_LOG_ERROR, "Packet too small for DPX header\n");
177 return AVERROR_INVALIDDATA;
178 }
179
180 93 magic_num = AV_RB32(buf);
181 93 buf += 4;
182
183 /* Check if the files "magic number" is "SDPX" which means it uses
184 * big-endian or XPDS which is for little-endian files */
185
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93 if (magic_num == AV_RL32("SDPX")) {
186 91 endian = 0;
187
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2 } else if (magic_num == AV_RB32("SDPX")) {
188 2 endian = 1;
189 } else {
190 av_log(avctx, AV_LOG_ERROR, "DPX marker not found\n");
191 return AVERROR_INVALIDDATA;
192 }
193
194 93 offset = read32(&buf, endian);
195
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93 if (avpkt->size <= offset) {
196 av_log(avctx, AV_LOG_ERROR, "Invalid data start offset\n");
197 return AVERROR_INVALIDDATA;
198 }
199
200 93 header_version = read32(&buf, 0);
201
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93 if (header_version == MKTAG('V','1','.','0'))
202 89 version = 1;
203
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93 if (header_version == MKTAG('V','2','.','0'))
204 4 version = 2;
205
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93 if (!version)
206 av_log(avctx, AV_LOG_WARNING, "Unknown header format version %s.\n",
207 av_fourcc2str(header_version));
208
209 // Check encryption
210 93 buf = avpkt->data + 660;
211 93 ret = read32(&buf, endian);
212
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93 if (ret != 0xFFFFFFFF) {
213 avpriv_report_missing_feature(avctx, "Encryption");
214 av_log(avctx, AV_LOG_WARNING, "The image is encrypted and may "
215 "not properly decode.\n");
216 }
217
218 // Need to end in 0x304 offset from start of file
219 93 buf = avpkt->data + 0x304;
220 93 w = read32(&buf, endian);
221 93 h = read32(&buf, endian);
222
223
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93 if ((ret = ff_set_dimensions(avctx, w, h)) < 0)
224 return ret;
225
226 // Need to end in 0x320 to read the descriptor
227 93 buf += 20;
228 93 descriptor = buf[0];
229 93 color_trc = buf[1];
230 93 color_spec = buf[2];
231
232 // Need to end in 0x323 to read the bits per color
233 93 buf += 3;
234 93 avctx->bits_per_raw_sample =
235 93 bits_per_color = buf[0];
236 93 buf++;
237 93 packing = read16(&buf, endian);
238 93 encoding = read16(&buf, endian);
239
240
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93 if (encoding) {
241 avpriv_report_missing_feature(avctx, "Encoding %d", encoding);
242 return AVERROR_PATCHWELCOME;
243 }
244
245
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93 if (bits_per_color > 31)
246 return AVERROR_INVALIDDATA;
247
248 93 buf += 820;
249 93 avctx->sample_aspect_ratio.num = read32(&buf, endian);
250 93 avctx->sample_aspect_ratio.den = read32(&buf, endian);
251
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93 if (avctx->sample_aspect_ratio.num > 0 && avctx->sample_aspect_ratio.den > 0)
252 2 av_reduce(&avctx->sample_aspect_ratio.num, &avctx->sample_aspect_ratio.den,
253 2 avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den,
254 0x10000);
255 else
256 91 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
257
258 /* preferred frame rate from Motion-picture film header */
259
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93 if (offset >= 1724 + 4) {
260 4 buf = avpkt->data + 1724;
261 4 i = read32(&buf, endian);
262
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4 if(i && i != 0xFFFFFFFF) {
263 2 AVRational q = av_d2q(av_int2float(i), 4096);
264
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2 if (q.num > 0 && q.den > 0)
265 2 avctx->framerate = q;
266 }
267 }
268
269 /* alternative frame rate from television header */
270
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93 if (offset >= 1940 + 4 &&
271
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4 !(avctx->framerate.num && avctx->framerate.den)) {
272 1 buf = avpkt->data + 1940;
273 1 i = read32(&buf, endian);
274
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1 if(i && i != 0xFFFFFFFF) {
275 AVRational q = av_d2q(av_int2float(i), 4096);
276 if (q.num > 0 && q.den > 0)
277 avctx->framerate = q;
278 }
279 }
280
281 /* SMPTE TC from television header */
282
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93 if (offset >= 1920 + 4) {
283 uint32_t tc;
284 uint32_t *tc_sd;
285 char tcbuf[AV_TIMECODE_STR_SIZE];
286
287 4 buf = avpkt->data + 1920;
288 // read32 to native endian, av_bswap32 to opposite of native for
289 // compatibility with av_timecode_make_smpte_tc_string2 etc
290 4 tc = av_bswap32(read32(&buf, endian));
291
292
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4 if (i != 0xFFFFFFFF) {
293 AVFrameSideData *tcside =
294 4 av_frame_new_side_data(p, AV_FRAME_DATA_S12M_TIMECODE,
295 sizeof(uint32_t) * 4);
296
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4 if (!tcside)
297 return AVERROR(ENOMEM);
298
299 4 tc_sd = (uint32_t*)tcside->data;
300 4 tc_sd[0] = 1;
301 4 tc_sd[1] = tc;
302
303 4 av_timecode_make_smpte_tc_string2(tcbuf, avctx->framerate,
304 4 tc_sd[1], 0, 0);
305 4 av_dict_set(&p->metadata, "timecode", tcbuf, 0);
306 }
307 }
308
309 /* color range from television header */
310
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93 if (offset >= 1964 + 4) {
311 4 buf = avpkt->data + 1952;
312 4 i = read32(&buf, endian);
313
314 4 buf = avpkt->data + 1964;
315 4 j = read32(&buf, endian);
316
317
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4 if (i != 0xFFFFFFFF && j != 0xFFFFFFFF) {
318 float minCV, maxCV;
319 4 minCV = av_int2float(i);
320 4 maxCV = av_int2float(j);
321
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4 if (bits_per_color >= 1 &&
322
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4 minCV == 0.0f && maxCV == ((1U<<bits_per_color) - 1)) {
323 2 avctx->color_range = AVCOL_RANGE_JPEG;
324
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2 } else if (bits_per_color >= 8 &&
325
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2 minCV == (1 <<(bits_per_color - 4)) &&
326 maxCV == (235<<(bits_per_color - 8))) {
327 avctx->color_range = AVCOL_RANGE_MPEG;
328 }
329 }
330 }
331
332
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93 switch (descriptor) {
333 case 1: // R
334 case 2: // G
335 case 3: // B
336 case 4: // A
337 case 6: // Y
338 elements = 1;
339 yuv = 1;
340 break;
341 79 case 50: // RGB
342 79 elements = 3;
343 79 yuv = 0;
344 79 break;
345 14 case 52: // ABGR
346 case 51: // RGBA
347 14 elements = 4;
348 14 yuv = 0;
349 14 break;
350 case 100: // UYVY422
351 elements = 2;
352 yuv = 1;
353 break;
354 case 102: // UYV444
355 elements = 3;
356 yuv = 1;
357 break;
358 case 103: // UYVA4444
359 elements = 4;
360 yuv = 1;
361 break;
362 default:
363 avpriv_report_missing_feature(avctx, "Descriptor %d", descriptor);
364 return AVERROR_PATCHWELCOME;
365 }
366
367
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93 switch (bits_per_color) {
368 19 case 8:
369 19 stride = avctx->width * elements;
370 19 break;
371 30 case 10:
372
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30 if (!packing) {
373 av_log(avctx, AV_LOG_ERROR, "Packing to 32bit required\n");
374 return -1;
375 }
376 30 stride = (avctx->width * elements + 2) / 3 * 4;
377 30 break;
378 14 case 12:
379 14 stride = avctx->width * elements;
380
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14 if (packing) {
381 14 stride *= 2;
382 } else {
383 stride *= 3;
384 if (stride % 8) {
385 stride /= 8;
386 stride++;
387 stride *= 8;
388 }
389 stride /= 2;
390 }
391 14 break;
392 30 case 16:
393 30 stride = 2 * avctx->width * elements;
394 30 break;
395 case 32:
396 stride = 4 * avctx->width * elements;
397 break;
398 case 1:
399 case 64:
400 avpriv_report_missing_feature(avctx, "Depth %d", bits_per_color);
401 return AVERROR_PATCHWELCOME;
402 default:
403 return AVERROR_INVALIDDATA;
404 }
405
406
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93 switch (color_trc) {
407 89 case DPX_TRC_LINEAR:
408 89 avctx->color_trc = AVCOL_TRC_LINEAR;
409 89 break;
410 case DPX_TRC_SMPTE_274:
411 case DPX_TRC_ITU_R_709_4:
412 avctx->color_trc = AVCOL_TRC_BT709;
413 break;
414 case DPX_TRC_ITU_R_601_625:
415 case DPX_TRC_ITU_R_601_525:
416 case DPX_TRC_SMPTE_170:
417 avctx->color_trc = AVCOL_TRC_SMPTE170M;
418 break;
419 case DPX_TRC_ITU_R_624_4_PAL:
420 avctx->color_trc = AVCOL_TRC_GAMMA28;
421 break;
422 2 case DPX_TRC_USER_DEFINED:
423 case DPX_TRC_UNSPECIFIED_VIDEO:
424 /* Nothing to do */
425 2 break;
426 2 default:
427 2 av_log(avctx, AV_LOG_VERBOSE, "Cannot map DPX transfer characteristic "
428 "%d to color_trc.\n", color_trc);
429 2 break;
430 }
431
432
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93 switch (color_spec) {
433 2 case DPX_COL_SPEC_SMPTE_274:
434 case DPX_COL_SPEC_ITU_R_709_4:
435 2 avctx->color_primaries = AVCOL_PRI_BT709;
436 2 break;
437 case DPX_COL_SPEC_ITU_R_601_625:
438 case DPX_COL_SPEC_ITU_R_624_4_PAL:
439 avctx->color_primaries = AVCOL_PRI_BT470BG;
440 break;
441 case DPX_COL_SPEC_ITU_R_601_525:
442 case DPX_COL_SPEC_SMPTE_170:
443 avctx->color_primaries = AVCOL_PRI_SMPTE170M;
444 break;
445 2 case DPX_COL_SPEC_USER_DEFINED:
446 case DPX_COL_SPEC_UNSPECIFIED_VIDEO:
447 /* Nothing to do */
448 2 break;
449 89 default:
450 89 av_log(avctx, AV_LOG_VERBOSE, "Cannot map DPX color specification "
451 "%d to color_primaries.\n", color_spec);
452 89 break;
453 }
454
455
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93 if (yuv) {
456 switch (color_spec) {
457 case DPX_COL_SPEC_SMPTE_274:
458 case DPX_COL_SPEC_ITU_R_709_4:
459 avctx->colorspace = AVCOL_SPC_BT709;
460 break;
461 case DPX_COL_SPEC_ITU_R_601_625:
462 case DPX_COL_SPEC_ITU_R_624_4_PAL:
463 avctx->colorspace = AVCOL_SPC_BT470BG;
464 break;
465 case DPX_COL_SPEC_ITU_R_601_525:
466 case DPX_COL_SPEC_SMPTE_170:
467 avctx->colorspace = AVCOL_SPC_SMPTE170M;
468 break;
469 case DPX_COL_SPEC_USER_DEFINED:
470 case DPX_COL_SPEC_UNSPECIFIED_VIDEO:
471 /* Nothing to do */
472 break;
473 default:
474 av_log(avctx, AV_LOG_INFO, "Cannot map DPX color specification "
475 "%d to colorspace.\n", color_spec);
476 break;
477 }
478 } else {
479 93 avctx->colorspace = AVCOL_SPC_RGB;
480 }
481
482 // Table 3c: Runs will always break at scan line boundaries. Packing
483 // will always break to the next 32-bit word at scan-line boundaries.
484 // Unfortunately, the encoder produced invalid files, so attempt
485 // to detect it
486 93 need_align = FFALIGN(stride, 4);
487
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93 if (need_align*avctx->height + (int64_t)offset > avpkt->size) {
488 // Alignment seems unappliable, try without
489 if (stride*avctx->height + (int64_t)offset > avpkt->size) {
490 av_log(avctx, AV_LOG_ERROR, "Overread buffer. Invalid header?\n");
491 return AVERROR_INVALIDDATA;
492 } else {
493 av_log(avctx, AV_LOG_INFO, "Decoding DPX without scanline "
494 "alignment.\n");
495 need_align = 0;
496 }
497 } else {
498 93 need_align -= stride;
499 93 stride = FFALIGN(stride, 4);
500 }
501
502
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93 switch (1000 * descriptor + 10 * bits_per_color + endian) {
503 case 1081:
504 case 1080:
505 case 2081:
506 case 2080:
507 case 3081:
508 case 3080:
509 case 4081:
510 case 4080:
511 case 6081:
512 case 6080:
513 avctx->pix_fmt = AV_PIX_FMT_GRAY8;
514 break;
515 case 6121:
516 case 6120:
517 avctx->pix_fmt = AV_PIX_FMT_GRAY12;
518 break;
519 case 1320:
520 case 2320:
521 case 3320:
522 case 4320:
523 case 6320:
524 avctx->pix_fmt = AV_PIX_FMT_GRAYF32LE;
525 break;
526 case 1321:
527 case 2321:
528 case 3321:
529 case 4321:
530 case 6321:
531 avctx->pix_fmt = AV_PIX_FMT_GRAYF32BE;
532 break;
533 19 case 50081:
534 case 50080:
535 19 avctx->pix_fmt = AV_PIX_FMT_RGB24;
536 19 break;
537 case 52081:
538 case 52080:
539 avctx->pix_fmt = AV_PIX_FMT_ABGR;
540 break;
541 case 51081:
542 case 51080:
543 avctx->pix_fmt = AV_PIX_FMT_RGBA;
544 break;
545 30 case 50100:
546 case 50101:
547 30 avctx->pix_fmt = AV_PIX_FMT_GBRP10;
548 30 break;
549 case 51100:
550 case 51101:
551 avctx->pix_fmt = AV_PIX_FMT_GBRAP10;
552 break;
553 14 case 50120:
554 case 50121:
555 14 avctx->pix_fmt = AV_PIX_FMT_GBRP12;
556 14 break;
557 case 51120:
558 case 51121:
559 avctx->pix_fmt = AV_PIX_FMT_GBRAP12;
560 break;
561 case 6100:
562 case 6101:
563 avctx->pix_fmt = AV_PIX_FMT_GRAY10;
564 break;
565 case 6161:
566 avctx->pix_fmt = AV_PIX_FMT_GRAY16BE;
567 break;
568 case 6160:
569 avctx->pix_fmt = AV_PIX_FMT_GRAY16LE;
570 break;
571 2 case 50161:
572 2 avctx->pix_fmt = AV_PIX_FMT_RGB48BE;
573 2 break;
574 14 case 50160:
575 14 avctx->pix_fmt = AV_PIX_FMT_RGB48LE;
576 14 break;
577 case 51161:
578 avctx->pix_fmt = AV_PIX_FMT_RGBA64BE;
579 break;
580 14 case 51160:
581 14 avctx->pix_fmt = AV_PIX_FMT_RGBA64LE;
582 14 break;
583 case 50320:
584 avctx->pix_fmt = AV_PIX_FMT_GBRPF32LE;
585 break;
586 case 50321:
587 avctx->pix_fmt = AV_PIX_FMT_GBRPF32BE;
588 break;
589 case 51320:
590 avctx->pix_fmt = AV_PIX_FMT_GBRAPF32LE;
591 break;
592 case 51321:
593 avctx->pix_fmt = AV_PIX_FMT_GBRAPF32BE;
594 break;
595 case 100081:
596 avctx->pix_fmt = AV_PIX_FMT_UYVY422;
597 break;
598 case 102081:
599 avctx->pix_fmt = AV_PIX_FMT_YUV444P;
600 break;
601 case 103081:
602 avctx->pix_fmt = AV_PIX_FMT_YUVA444P;
603 break;
604 default:
605 av_log(avctx, AV_LOG_ERROR, "Unsupported format %d\n",
606 1000 * descriptor + 10 * bits_per_color + endian);
607 return AVERROR_PATCHWELCOME;
608 }
609
610 93 ff_set_sar(avctx, avctx->sample_aspect_ratio);
611
612
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93 if ((ret = ff_get_buffer(avctx, p, 0)) < 0)
613 return ret;
614
615 93 av_strlcpy(creator, avpkt->data + 160, 100);
616 93 creator[100] = '\0';
617 93 av_dict_set(&p->metadata, "Creator", creator, 0);
618
619 93 av_strlcpy(input_device, avpkt->data + 1556, 32);
620 93 input_device[32] = '\0';
621 93 av_dict_set(&p->metadata, "Input Device", input_device, 0);
622
623 // Some devices do not pad 10bit samples to whole 32bit words per row
624
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93 if (!memcmp(input_device, "Scanity", 7) ||
625
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93 !memcmp(creator, "Lasergraphics Inc.", 18)) {
626 unpadded_10bit = 1;
627 }
628
629 // Move pointer to offset from start of file
630 93 buf = avpkt->data + offset;
631
632
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837 for (i=0; i<AV_NUM_DATA_POINTERS; i++)
633 744 ptr[i] = p->data[i];
634
635
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93 switch (bits_per_color) {
636 30 case 10:
637
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8574 for (x = 0; x < avctx->height; x++) {
638 8544 uint16_t *dst[4] = {(uint16_t*)ptr[0],
639 8544 (uint16_t*)ptr[1],
640 8544 (uint16_t*)ptr[2],
641 8544 (uint16_t*)ptr[3]};
642
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8544 int shift = elements > 1 ? packing == 1 ? 22 : 20 : packing == 1 ? 2 : 0;
643
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3052512 for (y = 0; y < avctx->width; y++) {
644
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3043968 if (elements >= 3)
645 3043968 *dst[2]++ = read10in32(&buf, &rgbBuffer,
646 &n_datum, endian, shift);
647
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3043968 if (elements == 1)
648 *dst[0]++ = read10in32_gray(&buf, &rgbBuffer,
649 &n_datum, endian, shift);
650 else
651 3043968 *dst[0]++ = read10in32(&buf, &rgbBuffer,
652 &n_datum, endian, shift);
653
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3043968 if (elements >= 2)
654 3043968 *dst[1]++ = read10in32(&buf, &rgbBuffer,
655 &n_datum, endian, shift);
656
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3043968 if (elements == 4)
657 *dst[3]++ =
658 read10in32(&buf, &rgbBuffer,
659 &n_datum, endian, shift);
660 }
661
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8544 if (!unpadded_10bit)
662 8544 n_datum = 0;
663
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34176 for (i = 0; i < elements; i++)
664 25632 ptr[i] += p->linesize[i];
665 }
666 30 break;
667 14 case 12:
668
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4046 for (x = 0; x < avctx->height; x++) {
669 4032 uint16_t *dst[4] = {(uint16_t*)ptr[0],
670 4032 (uint16_t*)ptr[1],
671 4032 (uint16_t*)ptr[2],
672 4032 (uint16_t*)ptr[3]};
673
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4032 int shift = packing == 1 ? 4 : 0;
674
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1423296 for (y = 0; y < avctx->width; y++) {
675
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1419264 if (packing) {
676
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1419264 if (elements >= 3)
677 1419264 *dst[2]++ = read16(&buf, endian) >> shift & 0xFFF;
678 1419264 *dst[0]++ = read16(&buf, endian) >> shift & 0xFFF;
679
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1419264 if (elements >= 2)
680 1419264 *dst[1]++ = read16(&buf, endian) >> shift & 0xFFF;
681
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1419264 if (elements == 4)
682 *dst[3]++ = read16(&buf, endian) >> shift & 0xFFF;
683 } else {
684 if (elements >= 3)
685 *dst[2]++ = read12in32(&buf, &rgbBuffer,
686 &n_datum, endian);
687 *dst[0]++ = read12in32(&buf, &rgbBuffer,
688 &n_datum, endian);
689 if (elements >= 2)
690 *dst[1]++ = read12in32(&buf, &rgbBuffer,
691 &n_datum, endian);
692 if (elements == 4)
693 *dst[3]++ = read12in32(&buf, &rgbBuffer,
694 &n_datum, endian);
695 }
696 }
697 4032 n_datum = 0;
698
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16128 for (i = 0; i < elements; i++)
699 12096 ptr[i] += p->linesize[i];
700 // Jump to next aligned position
701 4032 buf += need_align;
702 }
703 14 break;
704 case 32:
705 if (elements == 1) {
706 av_image_copy_plane(ptr[0], p->linesize[0],
707 buf, stride,
708 elements * avctx->width * 4, avctx->height);
709 } else {
710 for (y = 0; y < avctx->height; y++) {
711 ptr[0] = p->data[0] + y * p->linesize[0];
712 ptr[1] = p->data[1] + y * p->linesize[1];
713 ptr[2] = p->data[2] + y * p->linesize[2];
714 ptr[3] = p->data[3] + y * p->linesize[3];
715 for (x = 0; x < avctx->width; x++) {
716 AV_WN32(ptr[2], AV_RN32(buf));
717 AV_WN32(ptr[0], AV_RN32(buf + 4));
718 AV_WN32(ptr[1], AV_RN32(buf + 8));
719 if (avctx->pix_fmt == AV_PIX_FMT_GBRAPF32BE ||
720 avctx->pix_fmt == AV_PIX_FMT_GBRAPF32LE) {
721 AV_WN32(ptr[3], AV_RN32(buf + 12));
722 buf += 4;
723 ptr[3] += 4;
724 }
725
726 buf += 12;
727 ptr[2] += 4;
728 ptr[0] += 4;
729 ptr[1] += 4;
730 }
731 }
732 }
733 break;
734 30 case 16:
735 30 elements *= 2;
736 49 case 8:
737
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49 if ( avctx->pix_fmt == AV_PIX_FMT_YUVA444P
738
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49 || avctx->pix_fmt == AV_PIX_FMT_YUV444P) {
739 for (x = 0; x < avctx->height; x++) {
740 ptr[0] = p->data[0] + x * p->linesize[0];
741 ptr[1] = p->data[1] + x * p->linesize[1];
742 ptr[2] = p->data[2] + x * p->linesize[2];
743 ptr[3] = p->data[3] + x * p->linesize[3];
744 for (y = 0; y < avctx->width; y++) {
745 *ptr[1]++ = *buf++;
746 *ptr[0]++ = *buf++;
747 *ptr[2]++ = *buf++;
748 if (avctx->pix_fmt == AV_PIX_FMT_YUVA444P)
749 *ptr[3]++ = *buf++;
750 }
751 }
752 } else {
753 49 av_image_copy_plane(ptr[0], p->linesize[0],
754 buf, stride,
755 49 elements * avctx->width, avctx->height);
756 }
757 49 break;
758 }
759
760 93 *got_frame = 1;
761
762 93 return buf_size;
763 }
764
765 const AVCodec ff_dpx_decoder = {
766 .name = "dpx",
767 .long_name = NULL_IF_CONFIG_SMALL("DPX (Digital Picture Exchange) image"),
768 .type = AVMEDIA_TYPE_VIDEO,
769 .id = AV_CODEC_ID_DPX,
770 .decode = decode_frame,
771 .capabilities = AV_CODEC_CAP_DR1,
772 };
773