FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/dpx.c
Date: 2023-03-22 23:59:29
Exec Total Coverage
Lines: 238 466 51.1%
Functions: 4 6 66.7%
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 "avcodec.h"
28 #include "codec_internal.h"
29 #include "decode.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, AVFrame *p,
153 int *got_frame, AVPacket *avpkt)
154 {
155 93 const uint8_t *buf = avpkt->data;
156 93 int buf_size = avpkt->size;
157 uint8_t *ptr[AV_NUM_DATA_POINTERS];
158 93 uint32_t header_version, version = 0;
159 93 char creator[101] = { 0 };
160 93 char input_device[33] = { 0 };
161
162 unsigned int offset;
163 int magic_num, endian;
164 int x, y, stride, i, j, ret;
165 int w, h, bits_per_color, descriptor, elements, packing;
166 int yuv, color_trc, color_spec;
167 93 int encoding, need_align = 0, unpadded_10bit = 0;
168
169 93 unsigned int rgbBuffer = 0;
170 93 int n_datum = 0;
171
172
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 93 if (avpkt->size <= 1634) {
173 ✗ av_log(avctx, AV_LOG_ERROR, "Packet too small for DPX header\n");
174 ✗ return AVERROR_INVALIDDATA;
175 }
176
177 93 magic_num = AV_RB32(buf);
178 93 buf += 4;
179
180 /* Check if the files "magic number" is "SDPX" which means it uses
181 * big-endian or XPDS which is for little-endian files */
182
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 93 if (magic_num == AV_RL32("SDPX")) {
183 91 endian = 0;
184
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 2 } else if (magic_num == AV_RB32("SDPX")) {
185 2 endian = 1;
186 } else {
187 ✗ av_log(avctx, AV_LOG_ERROR, "DPX marker not found\n");
188 ✗ return AVERROR_INVALIDDATA;
189 }
190
191 93 offset = read32(&buf, endian);
192
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 93 if (avpkt->size <= offset) {
193 ✗ av_log(avctx, AV_LOG_ERROR, "Invalid data start offset\n");
194 ✗ return AVERROR_INVALIDDATA;
195 }
196
197 93 header_version = read32(&buf, 0);
198
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 93 if (header_version == MKTAG('V','1','.','0'))
199 89 version = 1;
200
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 93 if (header_version == MKTAG('V','2','.','0'))
201 4 version = 2;
202
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 93 if (!version)
203 ✗ av_log(avctx, AV_LOG_WARNING, "Unknown header format version %s.\n",
204 ✗ av_fourcc2str(header_version));
205
206 // Check encryption
207 93 buf = avpkt->data + 660;
208 93 ret = read32(&buf, endian);
209
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 93 if (ret != 0xFFFFFFFF) {
210 ✗ avpriv_report_missing_feature(avctx, "Encryption");
211 ✗ av_log(avctx, AV_LOG_WARNING, "The image is encrypted and may "
212 "not properly decode.\n");
213 }
214
215 // Need to end in 0x304 offset from start of file
216 93 buf = avpkt->data + 0x304;
217 93 w = read32(&buf, endian);
218 93 h = read32(&buf, endian);
219
220
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 93 if ((ret = ff_set_dimensions(avctx, w, h)) < 0)
221 ✗ return ret;
222
223 // Need to end in 0x320 to read the descriptor
224 93 buf += 20;
225 93 descriptor = buf[0];
226 93 color_trc = buf[1];
227 93 color_spec = buf[2];
228
229 // Need to end in 0x323 to read the bits per color
230 93 buf += 3;
231 93 avctx->bits_per_raw_sample =
232 93 bits_per_color = buf[0];
233 93 buf++;
234 93 packing = read16(&buf, endian);
235 93 encoding = read16(&buf, endian);
236
237
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 93 if (encoding) {
238 ✗ avpriv_report_missing_feature(avctx, "Encoding %d", encoding);
239 ✗ return AVERROR_PATCHWELCOME;
240 }
241
242
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 93 if (bits_per_color > 31)
243 ✗ return AVERROR_INVALIDDATA;
244
245 93 buf += 820;
246 93 avctx->sample_aspect_ratio.num = read32(&buf, endian);
247 93 avctx->sample_aspect_ratio.den = read32(&buf, endian);
248
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 93 if (avctx->sample_aspect_ratio.num > 0 && avctx->sample_aspect_ratio.den > 0)
249 2 av_reduce(&avctx->sample_aspect_ratio.num, &avctx->sample_aspect_ratio.den,
250 2 avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den,
251 0x10000);
252 else
253 91 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
254
255 /* preferred frame rate from Motion-picture film header */
256
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 93 if (offset >= 1724 + 4) {
257 4 buf = avpkt->data + 1724;
258 4 i = read32(&buf, endian);
259
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 4 if(i && i != 0xFFFFFFFF) {
260 2 AVRational q = av_d2q(av_int2float(i), 4096);
261
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 2 if (q.num > 0 && q.den > 0)
262 2 avctx->framerate = q;
263 }
264 }
265
266 /* alternative frame rate from television header */
267
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 93 if (offset >= 1940 + 4 &&
268
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 4 !(avctx->framerate.num && avctx->framerate.den)) {
269 1 buf = avpkt->data + 1940;
270 1 i = read32(&buf, endian);
271
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 1 if(i && i != 0xFFFFFFFF) {
272 ✗ AVRational q = av_d2q(av_int2float(i), 4096);
273 ✗ if (q.num > 0 && q.den > 0)
274 ✗ avctx->framerate = q;
275 }
276 }
277
278 /* SMPTE TC from television header */
279
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 93 if (offset >= 1920 + 4) {
280 uint32_t tc;
281 uint32_t *tc_sd;
282 char tcbuf[AV_TIMECODE_STR_SIZE];
283
284 4 buf = avpkt->data + 1920;
285 // read32 to native endian, av_bswap32 to opposite of native for
286 // compatibility with av_timecode_make_smpte_tc_string2 etc
287 4 tc = av_bswap32(read32(&buf, endian));
288
289
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 4 if (i != 0xFFFFFFFF) {
290 AVFrameSideData *tcside =
291 4 av_frame_new_side_data(p, AV_FRAME_DATA_S12M_TIMECODE,
292 sizeof(uint32_t) * 4);
293
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 4 if (!tcside)
294 ✗ return AVERROR(ENOMEM);
295
296 4 tc_sd = (uint32_t*)tcside->data;
297 4 tc_sd[0] = 1;
298 4 tc_sd[1] = tc;
299
300 4 av_timecode_make_smpte_tc_string2(tcbuf, avctx->framerate,
301 4 tc_sd[1], 0, 0);
302 4 av_dict_set(&p->metadata, "timecode", tcbuf, 0);
303 }
304 }
305
306 /* color range from television header */
307
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 93 if (offset >= 1964 + 4) {
308 4 buf = avpkt->data + 1952;
309 4 i = read32(&buf, endian);
310
311 4 buf = avpkt->data + 1964;
312 4 j = read32(&buf, endian);
313
314
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 4 if (i != 0xFFFFFFFF && j != 0xFFFFFFFF) {
315 float minCV, maxCV;
316 4 minCV = av_int2float(i);
317 4 maxCV = av_int2float(j);
318
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 4 if (bits_per_color >= 1 &&
319
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 4 minCV == 0.0f && maxCV == ((1U<<bits_per_color) - 1)) {
320 2 avctx->color_range = AVCOL_RANGE_JPEG;
321
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 2 } else if (bits_per_color >= 8 &&
322
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 2 minCV == (1 <<(bits_per_color - 4)) &&
323 ✗ maxCV == (235<<(bits_per_color - 8))) {
324 ✗ avctx->color_range = AVCOL_RANGE_MPEG;
325 }
326 }
327 }
328
329
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 93 switch (descriptor) {
330 ✗ case 1: // R
331 case 2: // G
332 case 3: // B
333 case 4: // A
334 case 6: // Y
335 ✗ elements = 1;
336 ✗ yuv = 1;
337 ✗ break;
338 79 case 50: // RGB
339 79 elements = 3;
340 79 yuv = 0;
341 79 break;
342 14 case 52: // ABGR
343 case 51: // RGBA
344 14 elements = 4;
345 14 yuv = 0;
346 14 break;
347 ✗ case 100: // UYVY422
348 ✗ elements = 2;
349 ✗ yuv = 1;
350 ✗ break;
351 ✗ case 102: // UYV444
352 ✗ elements = 3;
353 ✗ yuv = 1;
354 ✗ break;
355 ✗ case 103: // UYVA4444
356 ✗ elements = 4;
357 ✗ yuv = 1;
358 ✗ break;
359 ✗ default:
360 ✗ avpriv_report_missing_feature(avctx, "Descriptor %d", descriptor);
361 ✗ return AVERROR_PATCHWELCOME;
362 }
363
364
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 93 switch (bits_per_color) {
365 19 case 8:
366 19 stride = avctx->width * elements;
367 19 break;
368 30 case 10:
369
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 30 if (!packing) {
370 ✗ av_log(avctx, AV_LOG_ERROR, "Packing to 32bit required\n");
371 ✗ return -1;
372 }
373 30 stride = (avctx->width * elements + 2) / 3 * 4;
374 30 break;
375 14 case 12:
376 14 stride = avctx->width * elements;
377
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 14 if (packing) {
378 14 stride *= 2;
379 } else {
380 ✗ stride *= 3;
381 ✗ if (stride % 8) {
382 ✗ stride /= 8;
383 ✗ stride++;
384 ✗ stride *= 8;
385 }
386 ✗ stride /= 2;
387 }
388 14 break;
389 30 case 16:
390 30 stride = 2 * avctx->width * elements;
391 30 break;
392 ✗ case 32:
393 ✗ stride = 4 * avctx->width * elements;
394 ✗ break;
395 ✗ case 1:
396 case 64:
397 ✗ avpriv_report_missing_feature(avctx, "Depth %d", bits_per_color);
398 ✗ return AVERROR_PATCHWELCOME;
399 ✗ default:
400 ✗ return AVERROR_INVALIDDATA;
401 }
402
403
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 93 switch (color_trc) {
404 89 case DPX_TRC_LINEAR:
405 89 avctx->color_trc = AVCOL_TRC_LINEAR;
406 89 break;
407 ✗ case DPX_TRC_SMPTE_274:
408 case DPX_TRC_ITU_R_709_4:
409 ✗ avctx->color_trc = AVCOL_TRC_BT709;
410 ✗ break;
411 ✗ case DPX_TRC_ITU_R_601_625:
412 case DPX_TRC_ITU_R_601_525:
413 case DPX_TRC_SMPTE_170:
414 ✗ avctx->color_trc = AVCOL_TRC_SMPTE170M;
415 ✗ break;
416 ✗ case DPX_TRC_ITU_R_624_4_PAL:
417 ✗ avctx->color_trc = AVCOL_TRC_GAMMA28;
418 ✗ break;
419 2 case DPX_TRC_USER_DEFINED:
420 case DPX_TRC_UNSPECIFIED_VIDEO:
421 /* Nothing to do */
422 2 break;
423 2 default:
424 2 av_log(avctx, AV_LOG_VERBOSE, "Cannot map DPX transfer characteristic "
425 "%d to color_trc.\n", color_trc);
426 2 break;
427 }
428
429
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 93 switch (color_spec) {
430 2 case DPX_COL_SPEC_SMPTE_274:
431 case DPX_COL_SPEC_ITU_R_709_4:
432 2 avctx->color_primaries = AVCOL_PRI_BT709;
433 2 break;
434 ✗ case DPX_COL_SPEC_ITU_R_601_625:
435 case DPX_COL_SPEC_ITU_R_624_4_PAL:
436 ✗ avctx->color_primaries = AVCOL_PRI_BT470BG;
437 ✗ break;
438 ✗ case DPX_COL_SPEC_ITU_R_601_525:
439 case DPX_COL_SPEC_SMPTE_170:
440 ✗ avctx->color_primaries = AVCOL_PRI_SMPTE170M;
441 ✗ break;
442 2 case DPX_COL_SPEC_USER_DEFINED:
443 case DPX_COL_SPEC_UNSPECIFIED_VIDEO:
444 /* Nothing to do */
445 2 break;
446 89 default:
447 89 av_log(avctx, AV_LOG_VERBOSE, "Cannot map DPX color specification "
448 "%d to color_primaries.\n", color_spec);
449 89 break;
450 }
451
452
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 93 if (yuv) {
453 ✗ switch (color_spec) {
454 ✗ case DPX_COL_SPEC_SMPTE_274:
455 case DPX_COL_SPEC_ITU_R_709_4:
456 ✗ avctx->colorspace = AVCOL_SPC_BT709;
457 ✗ break;
458 ✗ case DPX_COL_SPEC_ITU_R_601_625:
459 case DPX_COL_SPEC_ITU_R_624_4_PAL:
460 ✗ avctx->colorspace = AVCOL_SPC_BT470BG;
461 ✗ break;
462 ✗ case DPX_COL_SPEC_ITU_R_601_525:
463 case DPX_COL_SPEC_SMPTE_170:
464 ✗ avctx->colorspace = AVCOL_SPC_SMPTE170M;
465 ✗ break;
466 ✗ case DPX_COL_SPEC_USER_DEFINED:
467 case DPX_COL_SPEC_UNSPECIFIED_VIDEO:
468 /* Nothing to do */
469 ✗ break;
470 ✗ default:
471 ✗ av_log(avctx, AV_LOG_INFO, "Cannot map DPX color specification "
472 "%d to colorspace.\n", color_spec);
473 ✗ break;
474 }
475 } else {
476 93 avctx->colorspace = AVCOL_SPC_RGB;
477 }
478
479 // Table 3c: Runs will always break at scan line boundaries. Packing
480 // will always break to the next 32-bit word at scan-line boundaries.
481 // Unfortunately, the encoder produced invalid files, so attempt
482 // to detect it
483 93 need_align = FFALIGN(stride, 4);
484
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 93 if (need_align*avctx->height + (int64_t)offset > avpkt->size) {
485 // Alignment seems unappliable, try without
486 ✗ if (stride*avctx->height + (int64_t)offset > avpkt->size) {
487 ✗ av_log(avctx, AV_LOG_ERROR, "Overread buffer. Invalid header?\n");
488 ✗ return AVERROR_INVALIDDATA;
489 } else {
490 ✗ av_log(avctx, AV_LOG_INFO, "Decoding DPX without scanline "
491 "alignment.\n");
492 ✗ need_align = 0;
493 }
494 } else {
495 93 need_align -= stride;
496 93 stride = FFALIGN(stride, 4);
497 }
498
499
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 93 switch (1000 * descriptor + 10 * bits_per_color + endian) {
500 ✗ case 1081:
501 case 1080:
502 case 2081:
503 case 2080:
504 case 3081:
505 case 3080:
506 case 4081:
507 case 4080:
508 case 6081:
509 case 6080:
510 ✗ avctx->pix_fmt = AV_PIX_FMT_GRAY8;
511 ✗ break;
512 ✗ case 6121:
513 case 6120:
514 ✗ avctx->pix_fmt = AV_PIX_FMT_GRAY12;
515 ✗ break;
516 ✗ case 1320:
517 case 2320:
518 case 3320:
519 case 4320:
520 case 6320:
521 ✗ avctx->pix_fmt = AV_PIX_FMT_GRAYF32LE;
522 ✗ break;
523 ✗ case 1321:
524 case 2321:
525 case 3321:
526 case 4321:
527 case 6321:
528 ✗ avctx->pix_fmt = AV_PIX_FMT_GRAYF32BE;
529 ✗ break;
530 19 case 50081:
531 case 50080:
532 19 avctx->pix_fmt = AV_PIX_FMT_RGB24;
533 19 break;
534 ✗ case 52081:
535 case 52080:
536 ✗ avctx->pix_fmt = AV_PIX_FMT_ABGR;
537 ✗ break;
538 ✗ case 51081:
539 case 51080:
540 ✗ avctx->pix_fmt = AV_PIX_FMT_RGBA;
541 ✗ break;
542 30 case 50100:
543 case 50101:
544 30 avctx->pix_fmt = AV_PIX_FMT_GBRP10;
545 30 break;
546 ✗ case 51100:
547 case 51101:
548 ✗ avctx->pix_fmt = AV_PIX_FMT_GBRAP10;
549 ✗ break;
550 14 case 50120:
551 case 50121:
552 14 avctx->pix_fmt = AV_PIX_FMT_GBRP12;
553 14 break;
554 ✗ case 51120:
555 case 51121:
556 ✗ avctx->pix_fmt = AV_PIX_FMT_GBRAP12;
557 ✗ break;
558 ✗ case 6100:
559 case 6101:
560 ✗ avctx->pix_fmt = AV_PIX_FMT_GRAY10;
561 ✗ break;
562 ✗ case 6161:
563 ✗ avctx->pix_fmt = AV_PIX_FMT_GRAY16BE;
564 ✗ break;
565 ✗ case 6160:
566 ✗ avctx->pix_fmt = AV_PIX_FMT_GRAY16LE;
567 ✗ break;
568 2 case 50161:
569 2 avctx->pix_fmt = AV_PIX_FMT_RGB48BE;
570 2 break;
571 14 case 50160:
572 14 avctx->pix_fmt = AV_PIX_FMT_RGB48LE;
573 14 break;
574 ✗ case 51161:
575 ✗ avctx->pix_fmt = AV_PIX_FMT_RGBA64BE;
576 ✗ break;
577 14 case 51160:
578 14 avctx->pix_fmt = AV_PIX_FMT_RGBA64LE;
579 14 break;
580 ✗ case 50320:
581 ✗ avctx->pix_fmt = AV_PIX_FMT_GBRPF32LE;
582 ✗ break;
583 ✗ case 50321:
584 ✗ avctx->pix_fmt = AV_PIX_FMT_GBRPF32BE;
585 ✗ break;
586 ✗ case 51320:
587 ✗ avctx->pix_fmt = AV_PIX_FMT_GBRAPF32LE;
588 ✗ break;
589 ✗ case 51321:
590 ✗ avctx->pix_fmt = AV_PIX_FMT_GBRAPF32BE;
591 ✗ break;
592 ✗ case 100081:
593 ✗ avctx->pix_fmt = AV_PIX_FMT_UYVY422;
594 ✗ break;
595 ✗ case 102081:
596 ✗ avctx->pix_fmt = AV_PIX_FMT_YUV444P;
597 ✗ break;
598 ✗ case 103081:
599 ✗ avctx->pix_fmt = AV_PIX_FMT_YUVA444P;
600 ✗ break;
601 ✗ default:
602 ✗ av_log(avctx, AV_LOG_ERROR, "Unsupported format %d\n",
603 ✗ 1000 * descriptor + 10 * bits_per_color + endian);
604 ✗ return AVERROR_PATCHWELCOME;
605 }
606
607 93 ff_set_sar(avctx, avctx->sample_aspect_ratio);
608
609
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 93 if ((ret = ff_get_buffer(avctx, p, 0)) < 0)
610 ✗ return ret;
611
612 93 av_strlcpy(creator, avpkt->data + 160, 100);
613 93 creator[100] = '\0';
614 93 av_dict_set(&p->metadata, "Creator", creator, 0);
615
616 93 av_strlcpy(input_device, avpkt->data + 1556, 32);
617 93 input_device[32] = '\0';
618 93 av_dict_set(&p->metadata, "Input Device", input_device, 0);
619
620 // Some devices do not pad 10bit samples to whole 32bit words per row
621
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 93 if (!memcmp(input_device, "Scanity", 7) ||
622
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 93 !memcmp(creator, "Lasergraphics Inc.", 18)) {
623 ✗ unpadded_10bit = 1;
624 }
625
626 // Move pointer to offset from start of file
627 93 buf = avpkt->data + offset;
628
629
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 837 for (i=0; i<AV_NUM_DATA_POINTERS; i++)
630 744 ptr[i] = p->data[i];
631
632
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 93 switch (bits_per_color) {
633 30 case 10:
634
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 8574 for (x = 0; x < avctx->height; x++) {
635 8544 uint16_t *dst[4] = {(uint16_t*)ptr[0],
636 8544 (uint16_t*)ptr[1],
637 8544 (uint16_t*)ptr[2],
638 8544 (uint16_t*)ptr[3]};
639
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 8544 int shift = elements > 1 ? packing == 1 ? 22 : 20 : packing == 1 ? 2 : 0;
640
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 3052512 for (y = 0; y < avctx->width; y++) {
641
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 3043968 if (elements >= 3)
642 3043968 *dst[2]++ = read10in32(&buf, &rgbBuffer,
643 &n_datum, endian, shift);
644
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 3043968 if (elements == 1)
645 ✗ *dst[0]++ = read10in32_gray(&buf, &rgbBuffer,
646 &n_datum, endian, shift);
647 else
648 3043968 *dst[0]++ = read10in32(&buf, &rgbBuffer,
649 &n_datum, endian, shift);
650
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 3043968 if (elements >= 2)
651 3043968 *dst[1]++ = read10in32(&buf, &rgbBuffer,
652 &n_datum, endian, shift);
653
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 3043968 if (elements == 4)
654 ✗ *dst[3]++ =
655 ✗ read10in32(&buf, &rgbBuffer,
656 &n_datum, endian, shift);
657 }
658
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 8544 if (!unpadded_10bit)
659 8544 n_datum = 0;
660
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 34176 for (i = 0; i < elements; i++)
661 25632 ptr[i] += p->linesize[i];
662 }
663 30 break;
664 14 case 12:
665
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 4046 for (x = 0; x < avctx->height; x++) {
666 4032 uint16_t *dst[4] = {(uint16_t*)ptr[0],
667 4032 (uint16_t*)ptr[1],
668 4032 (uint16_t*)ptr[2],
669 4032 (uint16_t*)ptr[3]};
670
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 4032 int shift = packing == 1 ? 4 : 0;
671
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 1423296 for (y = 0; y < avctx->width; y++) {
672
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 1419264 if (packing) {
673
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 1419264 if (elements >= 3)
674 1419264 *dst[2]++ = read16(&buf, endian) >> shift & 0xFFF;
675 1419264 *dst[0]++ = read16(&buf, endian) >> shift & 0xFFF;
676
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677 1419264 *dst[1]++ = read16(&buf, endian) >> shift & 0xFFF;
678
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 1419264 if (elements == 4)
679 ✗ *dst[3]++ = read16(&buf, endian) >> shift & 0xFFF;
680 } else {
681 ✗ if (elements >= 3)
682 ✗ *dst[2]++ = read12in32(&buf, &rgbBuffer,
683 &n_datum, endian);
684 ✗ *dst[0]++ = read12in32(&buf, &rgbBuffer,
685 &n_datum, endian);
686 ✗ if (elements >= 2)
687 ✗ *dst[1]++ = read12in32(&buf, &rgbBuffer,
688 &n_datum, endian);
689 ✗ if (elements == 4)
690 ✗ *dst[3]++ = read12in32(&buf, &rgbBuffer,
691 &n_datum, endian);
692 }
693 }
694 4032 n_datum = 0;
695
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 16128 for (i = 0; i < elements; i++)
696 12096 ptr[i] += p->linesize[i];
697 // Jump to next aligned position
698 4032 buf += need_align;
699 }
700 14 break;
701 ✗ case 32:
702 ✗ if (elements == 1) {
703 ✗ av_image_copy_plane(ptr[0], p->linesize[0],
704 buf, stride,
705 ✗ elements * avctx->width * 4, avctx->height);
706 } else {
707 ✗ for (y = 0; y < avctx->height; y++) {
708 ✗ ptr[0] = p->data[0] + y * p->linesize[0];
709 ✗ ptr[1] = p->data[1] + y * p->linesize[1];
710 ✗ ptr[2] = p->data[2] + y * p->linesize[2];
711 ✗ ptr[3] = p->data[3] + y * p->linesize[3];
712 ✗ for (x = 0; x < avctx->width; x++) {
713 ✗ AV_WN32(ptr[2], AV_RN32(buf));
714 ✗ AV_WN32(ptr[0], AV_RN32(buf + 4));
715 ✗ AV_WN32(ptr[1], AV_RN32(buf + 8));
716 ✗ if (avctx->pix_fmt == AV_PIX_FMT_GBRAPF32BE ||
717 ✗ avctx->pix_fmt == AV_PIX_FMT_GBRAPF32LE) {
718 ✗ AV_WN32(ptr[3], AV_RN32(buf + 12));
719 ✗ buf += 4;
720 ✗ ptr[3] += 4;
721 }
722
723 ✗ buf += 12;
724 ✗ ptr[2] += 4;
725 ✗ ptr[0] += 4;
726 ✗ ptr[1] += 4;
727 }
728 }
729 }
730 ✗ break;
731 30 case 16:
732 30 elements *= 2;
733 49 case 8:
734
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 49 if ( avctx->pix_fmt == AV_PIX_FMT_YUVA444P
735
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 49 || avctx->pix_fmt == AV_PIX_FMT_YUV444P) {
736 ✗ for (x = 0; x < avctx->height; x++) {
737 ✗ ptr[0] = p->data[0] + x * p->linesize[0];
738 ✗ ptr[1] = p->data[1] + x * p->linesize[1];
739 ✗ ptr[2] = p->data[2] + x * p->linesize[2];
740 ✗ ptr[3] = p->data[3] + x * p->linesize[3];
741 ✗ for (y = 0; y < avctx->width; y++) {
742 ✗ *ptr[1]++ = *buf++;
743 ✗ *ptr[0]++ = *buf++;
744 ✗ *ptr[2]++ = *buf++;
745 ✗ if (avctx->pix_fmt == AV_PIX_FMT_YUVA444P)
746 ✗ *ptr[3]++ = *buf++;
747 }
748 }
749 } else {
750 49 av_image_copy_plane(ptr[0], p->linesize[0],
751 buf, stride,
752 49 elements * avctx->width, avctx->height);
753 }
754 49 break;
755 }
756
757 93 *got_frame = 1;
758
759 93 return buf_size;
760 }
761
762 const FFCodec ff_dpx_decoder = {
763 .p.name = "dpx",
764 CODEC_LONG_NAME("DPX (Digital Picture Exchange) image"),
765 .p.type = AVMEDIA_TYPE_VIDEO,
766 .p.id = AV_CODEC_ID_DPX,
767 FF_CODEC_DECODE_CB(decode_frame),
768 .p.capabilities = AV_CODEC_CAP_DR1,
769 };
770