FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/dirac.c
Date: 2023-12-04 05:51:44
Exec Total Coverage
Lines: 101 143 70.6%
Functions: 2 2 100.0%
Branches: 45 92 48.9%
Line Branch Exec Source
1 /*
2 * Copyright (C) 2007 Marco Gerards <marco@gnu.org>
3 * Copyright (C) 2009 David Conrad
4 * Copyright (C) 2011 Jordi Ortiz
5 *
6 * This file is part of FFmpeg.
7 *
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23 /**
24 * @file
25 * Dirac Decoder
26 * @author Marco Gerards <marco@gnu.org>, David Conrad, Jordi Ortiz <nenjordi@gmail.com>
27 */
28
29 #include "config.h"
30
31 #include "libavutil/pixdesc.h"
32
33 #include "dirac.h"
34 #include "get_bits.h"
35 #include "golomb.h"
36 #include "mpeg12data.h"
37
38 #if CONFIG_DIRAC_PARSE
39
40 typedef struct dirac_source_params {
41 unsigned width;
42 unsigned height;
43 uint8_t chroma_format; ///< 0: 444 1: 422 2: 420
44
45 uint8_t interlaced;
46 uint8_t top_field_first;
47
48 uint8_t frame_rate_index; ///< index into dirac_frame_rate[]
49 uint8_t aspect_ratio_index; ///< index into dirac_aspect_ratio[]
50
51 uint16_t clean_width;
52 uint16_t clean_height;
53 uint16_t clean_left_offset;
54 uint16_t clean_right_offset;
55
56 uint8_t pixel_range_index; ///< index into dirac_pixel_range_presets[]
57 uint8_t color_spec_index; ///< index into dirac_color_spec_presets[]
58 } dirac_source_params;
59
60 /* defaults for source parameters */
61 static const dirac_source_params dirac_source_parameters_defaults[] = {
62 { 640, 480, 2, 0, 0, 1, 1, 640, 480, 0, 0, 1, 0 },
63 { 176, 120, 2, 0, 0, 9, 2, 176, 120, 0, 0, 1, 1 },
64 { 176, 144, 2, 0, 1, 10, 3, 176, 144, 0, 0, 1, 2 },
65 { 352, 240, 2, 0, 0, 9, 2, 352, 240, 0, 0, 1, 1 },
66 { 352, 288, 2, 0, 1, 10, 3, 352, 288, 0, 0, 1, 2 },
67 { 704, 480, 2, 0, 0, 9, 2, 704, 480, 0, 0, 1, 1 },
68 { 704, 576, 2, 0, 1, 10, 3, 704, 576, 0, 0, 1, 2 },
69 { 720, 480, 1, 1, 0, 4, 2, 704, 480, 8, 0, 3, 1 },
70 { 720, 576, 1, 1, 1, 3, 3, 704, 576, 8, 0, 3, 2 },
71
72 { 1280, 720, 1, 0, 1, 7, 1, 1280, 720, 0, 0, 3, 3 },
73 { 1280, 720, 1, 0, 1, 6, 1, 1280, 720, 0, 0, 3, 3 },
74 { 1920, 1080, 1, 1, 1, 4, 1, 1920, 1080, 0, 0, 3, 3 },
75 { 1920, 1080, 1, 1, 1, 3, 1, 1920, 1080, 0, 0, 3, 3 },
76 { 1920, 1080, 1, 0, 1, 7, 1, 1920, 1080, 0, 0, 3, 3 },
77 { 1920, 1080, 1, 0, 1, 6, 1, 1920, 1080, 0, 0, 3, 3 },
78 { 2048, 1080, 0, 0, 1, 2, 1, 2048, 1080, 0, 0, 4, 4 },
79 { 4096, 2160, 0, 0, 1, 2, 1, 4096, 2160, 0, 0, 4, 4 },
80
81 { 3840, 2160, 1, 0, 1, 7, 1, 3840, 2160, 0, 0, 3, 3 },
82 { 3840, 2160, 1, 0, 1, 6, 1, 3840, 2160, 0, 0, 3, 3 },
83 { 7680, 4320, 1, 0, 1, 7, 1, 3840, 2160, 0, 0, 3, 3 },
84 { 7680, 4320, 1, 0, 1, 6, 1, 3840, 2160, 0, 0, 3, 3 },
85 };
86
87 /* [DIRAC_STD] Table 10.4 - Available preset pixel aspect ratio values */
88 static const AVRational dirac_preset_aspect_ratios[] = {
89 { 1, 1 },
90 { 10, 11 },
91 { 12, 11 },
92 { 40, 33 },
93 { 16, 11 },
94 { 4, 3 },
95 };
96
97 /* [DIRAC_STD] Values 9,10 of 10.3.5 Frame Rate.
98 * Table 10.3 Available preset frame rate values
99 */
100 static const AVRational dirac_frame_rate[] = {
101 { 15000, 1001 },
102 { 25, 2 },
103 };
104
105 /* [DIRAC_STD] This should be equivalent to Table 10.5 Available signal
106 * range presets */
107 static const struct {
108 uint8_t bitdepth;
109 enum AVColorRange color_range;
110 } pixel_range_presets[] = {
111 { 8, AVCOL_RANGE_JPEG },
112 { 8, AVCOL_RANGE_MPEG },
113 { 10, AVCOL_RANGE_MPEG },
114 { 12, AVCOL_RANGE_MPEG },
115 };
116
117 static const enum AVColorPrimaries dirac_primaries[] = {
118 AVCOL_PRI_BT709,
119 AVCOL_PRI_SMPTE170M,
120 AVCOL_PRI_BT470BG,
121 };
122
123 static const struct {
124 enum AVColorPrimaries color_primaries;
125 enum AVColorSpace colorspace;
126 enum AVColorTransferCharacteristic color_trc;
127 } dirac_color_presets[] = {
128 { AVCOL_PRI_BT709, AVCOL_SPC_BT709, AVCOL_TRC_BT709 },
129 { AVCOL_PRI_SMPTE170M, AVCOL_SPC_BT470BG, AVCOL_TRC_BT709 },
130 { AVCOL_PRI_BT470BG, AVCOL_SPC_BT470BG, AVCOL_TRC_BT709 },
131 { AVCOL_PRI_BT709, AVCOL_SPC_BT709, AVCOL_TRC_BT709 },
132 { AVCOL_PRI_BT709, AVCOL_SPC_BT709, AVCOL_TRC_UNSPECIFIED /* DCinema */ },
133 };
134
135 /* [DIRAC_STD] Table 10.2 Supported chroma sampling formats */
136 static const enum AVPixelFormat dirac_pix_fmt[][3] = {
137 {AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV444P10, AV_PIX_FMT_YUV444P12},
138 {AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV422P12},
139 {AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV420P12},
140 };
141
142 /* [DIRAC_STD] 10.3 Parse Source Parameters.
143 * source_parameters(base_video_format) */
144 70 static int parse_source_parameters(AVDiracSeqHeader *dsh, GetBitContext *gb,
145 void *log_ctx)
146 {
147 70 AVRational frame_rate = { 0, 0 };
148 70 unsigned luma_depth = 8, luma_offset = 16;
149 int idx;
150 int chroma_x_shift, chroma_y_shift;
151 int ret;
152
153 /* [DIRAC_STD] 10.3.2 Frame size. frame_size(video_params) */
154 /* [DIRAC_STD] custom_dimensions_flag */
155
1/2
✓ Branch 1 taken 70 times.
✗ Branch 2 not taken.
 70 if (get_bits1(gb)) {
156 70 dsh->width = get_interleaved_ue_golomb(gb); /* [DIRAC_STD] FRAME_WIDTH */
157 70 dsh->height = get_interleaved_ue_golomb(gb); /* [DIRAC_STD] FRAME_HEIGHT */
158 }
159
160 /* [DIRAC_STD] 10.3.3 Chroma Sampling Format.
161 * chroma_sampling_format(video_params) */
162 /* [DIRAC_STD] custom_chroma_format_flag */
163
1/2
✓ Branch 1 taken 70 times.
✗ Branch 2 not taken.
 70 if (get_bits1(gb))
164 /* [DIRAC_STD] CHROMA_FORMAT_INDEX */
165 70 dsh->chroma_format = get_interleaved_ue_golomb(gb);
166
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 70 times.
 70 if (dsh->chroma_format > 2U) {
167 ✗ if (log_ctx)
168 ✗ av_log(log_ctx, AV_LOG_ERROR, "Unknown chroma format %d\n",
169 ✗ dsh->chroma_format);
170 ✗ return AVERROR_INVALIDDATA;
171 }
172
173 /* [DIRAC_STD] 10.3.4 Scan Format. scan_format(video_params) */
174 /* [DIRAC_STD] custom_scan_format_flag */
175
1/2
✓ Branch 1 taken 70 times.
✗ Branch 2 not taken.
 70 if (get_bits1(gb))
176 /* [DIRAC_STD] SOURCE_SAMPLING */
177 70 dsh->interlaced = get_interleaved_ue_golomb(gb);
178
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 70 times.
 70 if (dsh->interlaced > 1U)
179 ✗ return AVERROR_INVALIDDATA;
180
181 /* [DIRAC_STD] 10.3.5 Frame Rate. frame_rate(video_params) */
182
1/2
✓ Branch 1 taken 70 times.
✗ Branch 2 not taken.
 70 if (get_bits1(gb)) { /* [DIRAC_STD] custom_frame_rate_flag */
183 70 dsh->frame_rate_index = get_interleaved_ue_golomb(gb);
184
185
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 70 times.
 70 if (dsh->frame_rate_index > 10U)
186 ✗ return AVERROR_INVALIDDATA;
187
188
2/2
✓ Branch 0 taken 66 times.
✓ Branch 1 taken 4 times.
 70 if (!dsh->frame_rate_index) {
189 /* [DIRAC_STD] FRAME_RATE_NUMER */
190 66 frame_rate.num = get_interleaved_ue_golomb(gb);
191 /* [DIRAC_STD] FRAME_RATE_DENOM */
192 66 frame_rate.den = get_interleaved_ue_golomb(gb);
193 }
194 }
195 /* [DIRAC_STD] preset_frame_rate(video_params, index) */
196
2/2
✓ Branch 0 taken 4 times.
✓ Branch 1 taken 66 times.
 70 if (dsh->frame_rate_index > 0) {
197
1/2
✓ Branch 0 taken 4 times.
✗ Branch 1 not taken.
 4 if (dsh->frame_rate_index <= 8)
198 4 frame_rate = ff_mpeg12_frame_rate_tab[dsh->frame_rate_index];
199 else
200 /* [DIRAC_STD] Table 10.3 values 9-10 */
201 ✗ frame_rate = dirac_frame_rate[dsh->frame_rate_index - 9];
202 }
203 70 dsh->framerate = frame_rate;
204
205 /* [DIRAC_STD] 10.3.6 Pixel Aspect Ratio.
206 * pixel_aspect_ratio(video_params) */
207
1/2
✓ Branch 1 taken 70 times.
✗ Branch 2 not taken.
 70 if (get_bits1(gb)) { /* [DIRAC_STD] custom_pixel_aspect_ratio_flag */
208 /* [DIRAC_STD] index */
209 70 dsh->aspect_ratio_index = get_interleaved_ue_golomb(gb);
210
211
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 70 times.
 70 if (dsh->aspect_ratio_index > 6U)
212 ✗ return AVERROR_INVALIDDATA;
213
214
2/2
✓ Branch 0 taken 66 times.
✓ Branch 1 taken 4 times.
 70 if (!dsh->aspect_ratio_index) {
215 66 dsh->sample_aspect_ratio.num = get_interleaved_ue_golomb(gb);
216 66 dsh->sample_aspect_ratio.den = get_interleaved_ue_golomb(gb);
217 }
218 }
219 /* [DIRAC_STD] Take value from Table 10.4 Available preset pixel
220 * aspect ratio values */
221
2/2
✓ Branch 0 taken 4 times.
✓ Branch 1 taken 66 times.
 70 if (dsh->aspect_ratio_index > 0)
222 4 dsh->sample_aspect_ratio =
223 4 dirac_preset_aspect_ratios[dsh->aspect_ratio_index - 1];
224
225 /* [DIRAC_STD] 10.3.7 Clean area. clean_area(video_params) */
226
2/2
✓ Branch 1 taken 4 times.
✓ Branch 2 taken 66 times.
 70 if (get_bits1(gb)) { /* [DIRAC_STD] custom_clean_area_flag */
227 /* [DIRAC_STD] CLEAN_WIDTH */
228 4 dsh->clean_width = get_interleaved_ue_golomb(gb);
229 /* [DIRAC_STD] CLEAN_HEIGHT */
230 4 dsh->clean_height = get_interleaved_ue_golomb(gb);
231 /* [DIRAC_STD] CLEAN_LEFT_OFFSET */
232 4 dsh->clean_left_offset = get_interleaved_ue_golomb(gb);
233 /* [DIRAC_STD] CLEAN_RIGHT_OFFSET */
234 4 dsh->clean_right_offset = get_interleaved_ue_golomb(gb);
235 }
236
237 /* [DIRAC_STD] 10.3.8 Signal range. signal_range(video_params)
238 * WARNING: Some adaptation seems to be done using the
239 * AVCOL_RANGE_MPEG/JPEG values */
240
1/2
✓ Branch 1 taken 70 times.
✗ Branch 2 not taken.
 70 if (get_bits1(gb)) { /* [DIRAC_STD] custom_signal_range_flag */
241 /* [DIRAC_STD] index */
242 70 dsh->pixel_range_index = get_interleaved_ue_golomb(gb);
243
244
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 70 times.
 70 if (dsh->pixel_range_index > 4U)
245 ✗ return AVERROR_INVALIDDATA;
246
247 /* This assumes either fullrange or MPEG levels only */
248
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 70 times.
 70 if (!dsh->pixel_range_index) {
249 ✗ luma_offset = get_interleaved_ue_golomb(gb);
250 ✗ luma_depth = av_log2(get_interleaved_ue_golomb(gb)) + 1;
251 ✗ get_interleaved_ue_golomb(gb); /* chroma offset */
252 ✗ get_interleaved_ue_golomb(gb); /* chroma excursion */
253 ✗ dsh->color_range = luma_offset ? AVCOL_RANGE_MPEG
254 ✗ : AVCOL_RANGE_JPEG;
255 }
256 }
257 /* [DIRAC_STD] Table 10.5
258 * Available signal range presets <--> pixel_range_presets */
259
1/2
✓ Branch 0 taken 70 times.
✗ Branch 1 not taken.
 70 if (dsh->pixel_range_index > 0) {
260 70 idx = dsh->pixel_range_index - 1;
261 70 luma_depth = pixel_range_presets[idx].bitdepth;
262 70 dsh->color_range = pixel_range_presets[idx].color_range;
263 }
264
265 70 dsh->bit_depth = luma_depth;
266
267 /* Full range 8 bts uses the same pix_fmts as limited range 8 bits */
268 70 dsh->pixel_range_index += dsh->pixel_range_index == 1;
269
270
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 70 times.
 70 if (dsh->pixel_range_index < 2U)
271 ✗ return AVERROR_INVALIDDATA;
272
273 70 dsh->pix_fmt = dirac_pix_fmt[dsh->chroma_format][dsh->pixel_range_index-2];
274 70 ret = av_pix_fmt_get_chroma_sub_sample(dsh->pix_fmt, &chroma_x_shift, &chroma_y_shift);
275
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 70 times.
 70 if (ret)
276 ✗ return ret;
277
278
2/4
✓ Branch 0 taken 70 times.
✗ Branch 1 not taken.
✗ Branch 2 not taken.
✓ Branch 3 taken 70 times.
 70 if ((dsh->width % (1<<chroma_x_shift)) || (dsh->height % (1<<chroma_y_shift))) {
279 ✗ if (log_ctx)
280 ✗ av_log(log_ctx, AV_LOG_ERROR, "Dimensions must be an integer multiple of the chroma subsampling\n");
281 ✗ return AVERROR_INVALIDDATA;
282 }
283
284 /* [DIRAC_STD] 10.3.9 Colour specification. colour_spec(video_params) */
285
1/2
✓ Branch 1 taken 70 times.
✗ Branch 2 not taken.
 70 if (get_bits1(gb)) { /* [DIRAC_STD] custom_colour_spec_flag */
286 /* [DIRAC_STD] index */
287 70 idx = dsh->color_spec_index = get_interleaved_ue_golomb(gb);
288
289
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 70 times.
 70 if (dsh->color_spec_index > 4U)
290 ✗ return AVERROR_INVALIDDATA;
291
292 70 dsh->color_primaries = dirac_color_presets[idx].color_primaries;
293 70 dsh->colorspace = dirac_color_presets[idx].colorspace;
294 70 dsh->color_trc = dirac_color_presets[idx].color_trc;
295
296
2/2
✓ Branch 0 taken 66 times.
✓ Branch 1 taken 4 times.
 70 if (!dsh->color_spec_index) {
297 /* [DIRAC_STD] 10.3.9.1 Colour primaries */
298
1/2
✓ Branch 1 taken 66 times.
✗ Branch 2 not taken.
 66 if (get_bits1(gb)) {
299 66 idx = get_interleaved_ue_golomb(gb);
300
1/2
✓ Branch 0 taken 66 times.
✗ Branch 1 not taken.
 66 if (idx < 3U)
301 66 dsh->color_primaries = dirac_primaries[idx];
302 }
303 /* [DIRAC_STD] 10.3.9.2 Colour matrix */
304
1/2
✓ Branch 1 taken 66 times.
✗ Branch 2 not taken.
 66 if (get_bits1(gb)) {
305 66 idx = get_interleaved_ue_golomb(gb);
306
1/2
✓ Branch 0 taken 66 times.
✗ Branch 1 not taken.
 66 if (!idx)
307 66 dsh->colorspace = AVCOL_SPC_BT709;
308 ✗ else if (idx == 1)
309 ✗ dsh->colorspace = AVCOL_SPC_BT470BG;
310 }
311 /* [DIRAC_STD] 10.3.9.3 Transfer function */
312
2/4
✓ Branch 1 taken 66 times.
✗ Branch 2 not taken.
✓ Branch 4 taken 66 times.
✗ Branch 5 not taken.
 66 if (get_bits1(gb) && !get_interleaved_ue_golomb(gb))
313 66 dsh->color_trc = AVCOL_TRC_BT709;
314 }
315 } else {
316 ✗ idx = dsh->color_spec_index;
317 ✗ dsh->color_primaries = dirac_color_presets[idx].color_primaries;
318 ✗ dsh->colorspace = dirac_color_presets[idx].colorspace;
319 ✗ dsh->color_trc = dirac_color_presets[idx].color_trc;
320 }
321
322 70 return 0;
323 }
324
325 /* [DIRAC_STD] 10. Sequence Header. sequence_header() */
326 70 int av_dirac_parse_sequence_header(AVDiracSeqHeader **pdsh,
327 const uint8_t *buf, size_t buf_size,
328 void *log_ctx)
329 {
330 AVDiracSeqHeader *dsh;
331 GetBitContext gb;
332 unsigned video_format, picture_coding_mode;
333 int ret;
334
335 70 dsh = av_mallocz(sizeof(*dsh));
336
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 70 times.
 70 if (!dsh)
337 ✗ return AVERROR(ENOMEM);
338
339 70 ret = init_get_bits8(&gb, buf, buf_size);
340
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 70 times.
 70 if (ret < 0)
341 ✗ goto fail;
342
343 /* [DIRAC_SPEC] 10.1 Parse Parameters. parse_parameters() */
344 70 dsh->version.major = get_interleaved_ue_golomb(&gb);
345 70 dsh->version.minor = get_interleaved_ue_golomb(&gb);
346 70 dsh->profile = get_interleaved_ue_golomb(&gb);
347 70 dsh->level = get_interleaved_ue_golomb(&gb);
348 /* [DIRAC_SPEC] sequence_header() -> base_video_format as defined in
349 * 10.2 Base Video Format, table 10.1 Dirac predefined video formats */
350 70 video_format = get_interleaved_ue_golomb(&gb);
351
352
1/4
✗ Branch 0 not taken.
✓ Branch 1 taken 70 times.
✗ Branch 2 not taken.
✗ Branch 3 not taken.
 70 if (dsh->version.major < 2 && log_ctx)
353 ✗ av_log(log_ctx, AV_LOG_WARNING, "Stream is old and may not work\n");
354
1/4
✗ Branch 0 not taken.
✓ Branch 1 taken 70 times.
✗ Branch 2 not taken.
✗ Branch 3 not taken.
 70 else if (dsh->version.major > 2 && log_ctx)
355 ✗ av_log(log_ctx, AV_LOG_WARNING, "Stream may have unhandled features\n");
356
357
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 70 times.
 70 if (video_format > 20U) {
358 ✗ ret = AVERROR_INVALIDDATA;
359 ✗ goto fail;
360 }
361
362 /* Fill in defaults for the source parameters. */
363 70 dsh->width = dirac_source_parameters_defaults[video_format].width;
364 70 dsh->height = dirac_source_parameters_defaults[video_format].height;
365 70 dsh->chroma_format = dirac_source_parameters_defaults[video_format].chroma_format;
366 70 dsh->interlaced = dirac_source_parameters_defaults[video_format].interlaced;
367 70 dsh->top_field_first = dirac_source_parameters_defaults[video_format].top_field_first;
368 70 dsh->frame_rate_index = dirac_source_parameters_defaults[video_format].frame_rate_index;
369 70 dsh->aspect_ratio_index = dirac_source_parameters_defaults[video_format].aspect_ratio_index;
370 70 dsh->clean_width = dirac_source_parameters_defaults[video_format].clean_width;
371 70 dsh->clean_height = dirac_source_parameters_defaults[video_format].clean_height;
372 70 dsh->clean_left_offset = dirac_source_parameters_defaults[video_format].clean_left_offset;
373 70 dsh->clean_right_offset = dirac_source_parameters_defaults[video_format].clean_right_offset;
374 70 dsh->pixel_range_index = dirac_source_parameters_defaults[video_format].pixel_range_index;
375 70 dsh->color_spec_index = dirac_source_parameters_defaults[video_format].color_spec_index;
376
377 /* [DIRAC_STD] 10.3 Source Parameters
378 * Override the defaults. */
379 70 ret = parse_source_parameters(dsh, &gb, log_ctx);
380
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 70 times.
 70 if (ret < 0)
381 ✗ goto fail;
382
383 /* [DIRAC_STD] picture_coding_mode shall be 0 for fields and 1 for frames
384 * currently only used to signal field coding */
385 70 picture_coding_mode = get_interleaved_ue_golomb(&gb);
386
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 70 times.
 70 if (picture_coding_mode != 0) {
387 ✗ if (log_ctx) {
388 ✗ av_log(log_ctx, AV_LOG_ERROR, "Unsupported picture coding mode %d",
389 picture_coding_mode);
390 }
391 ✗ ret = AVERROR_INVALIDDATA;
392 ✗ goto fail;
393 }
394
395 70 *pdsh = dsh;
396 70 return 0;
397 ✗ fail:
398 ✗ av_freep(&dsh);
399 ✗ *pdsh = NULL;
400 ✗ return ret;
401 }
402 #else
403 int av_dirac_parse_sequence_header(AVDiracSeqHeader **pdsh,
404 const uint8_t *buf, size_t buf_size,
405 void *log_ctx)
406 {
407 return AVERROR(ENOSYS);
408 }
409 #endif
410