FFmpeg
dirac.c
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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/mem.h"
32 #include "libavutil/pixdesc.h"
33 
34 #include "dirac.h"
35 #include "get_bits.h"
36 #include "golomb.h"
37 #include "mpeg12data.h"
38 
39 #if CONFIG_DIRAC_PARSE
40 
41 typedef struct dirac_source_params {
42  unsigned width;
43  unsigned height;
44  uint8_t chroma_format; ///< 0: 444 1: 422 2: 420
45 
46  uint8_t interlaced;
47  uint8_t top_field_first;
48 
49  uint8_t frame_rate_index; ///< index into dirac_frame_rate[]
50  uint8_t aspect_ratio_index; ///< index into dirac_aspect_ratio[]
51 
52  uint16_t clean_width;
53  uint16_t clean_height;
54  uint16_t clean_left_offset;
55  uint16_t clean_right_offset;
56 
57  uint8_t pixel_range_index; ///< index into dirac_pixel_range_presets[]
58  uint8_t color_spec_index; ///< index into dirac_color_spec_presets[]
59 } dirac_source_params;
60 
61 /* defaults for source parameters */
62 static const dirac_source_params dirac_source_parameters_defaults[] = {
63  { 640, 480, 2, 0, 0, 1, 1, 640, 480, 0, 0, 1, 0 },
64  { 176, 120, 2, 0, 0, 9, 2, 176, 120, 0, 0, 1, 1 },
65  { 176, 144, 2, 0, 1, 10, 3, 176, 144, 0, 0, 1, 2 },
66  { 352, 240, 2, 0, 0, 9, 2, 352, 240, 0, 0, 1, 1 },
67  { 352, 288, 2, 0, 1, 10, 3, 352, 288, 0, 0, 1, 2 },
68  { 704, 480, 2, 0, 0, 9, 2, 704, 480, 0, 0, 1, 1 },
69  { 704, 576, 2, 0, 1, 10, 3, 704, 576, 0, 0, 1, 2 },
70  { 720, 480, 1, 1, 0, 4, 2, 704, 480, 8, 0, 3, 1 },
71  { 720, 576, 1, 1, 1, 3, 3, 704, 576, 8, 0, 3, 2 },
72 
73  { 1280, 720, 1, 0, 1, 7, 1, 1280, 720, 0, 0, 3, 3 },
74  { 1280, 720, 1, 0, 1, 6, 1, 1280, 720, 0, 0, 3, 3 },
75  { 1920, 1080, 1, 1, 1, 4, 1, 1920, 1080, 0, 0, 3, 3 },
76  { 1920, 1080, 1, 1, 1, 3, 1, 1920, 1080, 0, 0, 3, 3 },
77  { 1920, 1080, 1, 0, 1, 7, 1, 1920, 1080, 0, 0, 3, 3 },
78  { 1920, 1080, 1, 0, 1, 6, 1, 1920, 1080, 0, 0, 3, 3 },
79  { 2048, 1080, 0, 0, 1, 2, 1, 2048, 1080, 0, 0, 4, 4 },
80  { 4096, 2160, 0, 0, 1, 2, 1, 4096, 2160, 0, 0, 4, 4 },
81 
82  { 3840, 2160, 1, 0, 1, 7, 1, 3840, 2160, 0, 0, 3, 3 },
83  { 3840, 2160, 1, 0, 1, 6, 1, 3840, 2160, 0, 0, 3, 3 },
84  { 7680, 4320, 1, 0, 1, 7, 1, 3840, 2160, 0, 0, 3, 3 },
85  { 7680, 4320, 1, 0, 1, 6, 1, 3840, 2160, 0, 0, 3, 3 },
86 };
87 
88 /* [DIRAC_STD] Table 10.4 - Available preset pixel aspect ratio values */
89 static const AVRational dirac_preset_aspect_ratios[] = {
90  { 1, 1 },
91  { 10, 11 },
92  { 12, 11 },
93  { 40, 33 },
94  { 16, 11 },
95  { 4, 3 },
96 };
97 
98 /* [DIRAC_STD] Values 9,10 of 10.3.5 Frame Rate.
99  * Table 10.3 Available preset frame rate values
100  */
101 static const AVRational dirac_frame_rate[] = {
102  { 15000, 1001 },
103  { 25, 2 },
104 };
105 
106 /* [DIRAC_STD] This should be equivalent to Table 10.5 Available signal
107  * range presets */
108 static const struct {
109  uint8_t bitdepth;
110  enum AVColorRange color_range;
111 } pixel_range_presets[] = {
112  { 8, AVCOL_RANGE_JPEG },
113  { 8, AVCOL_RANGE_MPEG },
114  { 10, AVCOL_RANGE_MPEG },
115  { 12, AVCOL_RANGE_MPEG },
116 };
117 
118 static const enum AVColorPrimaries dirac_primaries[] = {
119  AVCOL_PRI_BT709,
120  AVCOL_PRI_SMPTE170M,
121  AVCOL_PRI_BT470BG,
122 };
123 
124 static const struct {
125  enum AVColorPrimaries color_primaries;
126  enum AVColorSpace colorspace;
127  enum AVColorTransferCharacteristic color_trc;
128 } dirac_color_presets[] = {
129  { AVCOL_PRI_BT709, AVCOL_SPC_BT709, AVCOL_TRC_BT709 },
130  { AVCOL_PRI_SMPTE170M, AVCOL_SPC_BT470BG, AVCOL_TRC_BT709 },
131  { AVCOL_PRI_BT470BG, AVCOL_SPC_BT470BG, AVCOL_TRC_BT709 },
132  { AVCOL_PRI_BT709, AVCOL_SPC_BT709, AVCOL_TRC_BT709 },
133  { AVCOL_PRI_BT709, AVCOL_SPC_BT709, AVCOL_TRC_UNSPECIFIED /* DCinema */ },
134 };
135 
136 /* [DIRAC_STD] Table 10.2 Supported chroma sampling formats */
137 static const enum AVPixelFormat dirac_pix_fmt[][3] = {
138  {AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV444P10, AV_PIX_FMT_YUV444P12},
139  {AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV422P12},
140  {AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV420P12},
141 };
142 
143 /* [DIRAC_STD] 10.3 Parse Source Parameters.
144  * source_parameters(base_video_format) */
145 static int parse_source_parameters(AVDiracSeqHeader *dsh, GetBitContext *gb,
146  void *log_ctx)
147 {
148  AVRational frame_rate = { 0, 0 };
149  unsigned luma_depth = 8, luma_offset = 16;
150  int idx;
151  int chroma_x_shift, chroma_y_shift;
152  int ret;
153 
154  /* [DIRAC_STD] 10.3.2 Frame size. frame_size(video_params) */
155  /* [DIRAC_STD] custom_dimensions_flag */
156  if (get_bits1(gb)) {
157  dsh->width = get_interleaved_ue_golomb(gb); /* [DIRAC_STD] FRAME_WIDTH */
158  dsh->height = get_interleaved_ue_golomb(gb); /* [DIRAC_STD] FRAME_HEIGHT */
159  }
160 
161  /* [DIRAC_STD] 10.3.3 Chroma Sampling Format.
162  * chroma_sampling_format(video_params) */
163  /* [DIRAC_STD] custom_chroma_format_flag */
164  if (get_bits1(gb))
165  /* [DIRAC_STD] CHROMA_FORMAT_INDEX */
166  dsh->chroma_format = get_interleaved_ue_golomb(gb);
167  if (dsh->chroma_format > 2U) {
168  if (log_ctx)
169  av_log(log_ctx, AV_LOG_ERROR, "Unknown chroma format %d\n",
170  dsh->chroma_format);
171  return AVERROR_INVALIDDATA;
172  }
173 
174  /* [DIRAC_STD] 10.3.4 Scan Format. scan_format(video_params) */
175  /* [DIRAC_STD] custom_scan_format_flag */
176  if (get_bits1(gb))
177  /* [DIRAC_STD] SOURCE_SAMPLING */
178  dsh->interlaced = get_interleaved_ue_golomb(gb);
179  if (dsh->interlaced > 1U)
180  return AVERROR_INVALIDDATA;
181 
182  /* [DIRAC_STD] 10.3.5 Frame Rate. frame_rate(video_params) */
183  if (get_bits1(gb)) { /* [DIRAC_STD] custom_frame_rate_flag */
184  dsh->frame_rate_index = get_interleaved_ue_golomb(gb);
185 
186  if (dsh->frame_rate_index > 10U)
187  return AVERROR_INVALIDDATA;
188 
189  if (!dsh->frame_rate_index) {
190  /* [DIRAC_STD] FRAME_RATE_NUMER */
191  frame_rate.num = get_interleaved_ue_golomb(gb);
192  /* [DIRAC_STD] FRAME_RATE_DENOM */
193  frame_rate.den = get_interleaved_ue_golomb(gb);
194  }
195  }
196  /* [DIRAC_STD] preset_frame_rate(video_params, index) */
197  if (dsh->frame_rate_index > 0) {
198  if (dsh->frame_rate_index <= 8)
199  frame_rate = ff_mpeg12_frame_rate_tab[dsh->frame_rate_index];
200  else
201  /* [DIRAC_STD] Table 10.3 values 9-10 */
202  frame_rate = dirac_frame_rate[dsh->frame_rate_index - 9];
203  }
204  dsh->framerate = frame_rate;
205 
206  /* [DIRAC_STD] 10.3.6 Pixel Aspect Ratio.
207  * pixel_aspect_ratio(video_params) */
208  if (get_bits1(gb)) { /* [DIRAC_STD] custom_pixel_aspect_ratio_flag */
209  /* [DIRAC_STD] index */
210  dsh->aspect_ratio_index = get_interleaved_ue_golomb(gb);
211 
212  if (dsh->aspect_ratio_index > 6U)
213  return AVERROR_INVALIDDATA;
214 
215  if (!dsh->aspect_ratio_index) {
216  dsh->sample_aspect_ratio.num = get_interleaved_ue_golomb(gb);
217  dsh->sample_aspect_ratio.den = get_interleaved_ue_golomb(gb);
218  }
219  }
220  /* [DIRAC_STD] Take value from Table 10.4 Available preset pixel
221  * aspect ratio values */
222  if (dsh->aspect_ratio_index > 0)
223  dsh->sample_aspect_ratio =
224  dirac_preset_aspect_ratios[dsh->aspect_ratio_index - 1];
225 
226  /* [DIRAC_STD] 10.3.7 Clean area. clean_area(video_params) */
227  if (get_bits1(gb)) { /* [DIRAC_STD] custom_clean_area_flag */
228  /* [DIRAC_STD] CLEAN_WIDTH */
229  dsh->clean_width = get_interleaved_ue_golomb(gb);
230  /* [DIRAC_STD] CLEAN_HEIGHT */
231  dsh->clean_height = get_interleaved_ue_golomb(gb);
232  /* [DIRAC_STD] CLEAN_LEFT_OFFSET */
233  dsh->clean_left_offset = get_interleaved_ue_golomb(gb);
234  /* [DIRAC_STD] CLEAN_RIGHT_OFFSET */
235  dsh->clean_right_offset = get_interleaved_ue_golomb(gb);
236  }
237 
238  /* [DIRAC_STD] 10.3.8 Signal range. signal_range(video_params)
239  * WARNING: Some adaptation seems to be done using the
240  * AVCOL_RANGE_MPEG/JPEG values */
241  if (get_bits1(gb)) { /* [DIRAC_STD] custom_signal_range_flag */
242  /* [DIRAC_STD] index */
243  dsh->pixel_range_index = get_interleaved_ue_golomb(gb);
244 
245  if (dsh->pixel_range_index > 4U)
246  return AVERROR_INVALIDDATA;
247 
248  /* This assumes either fullrange or MPEG levels only */
249  if (!dsh->pixel_range_index) {
250  luma_offset = get_interleaved_ue_golomb(gb);
251  luma_depth = av_log2(get_interleaved_ue_golomb(gb)) + 1;
252  get_interleaved_ue_golomb(gb); /* chroma offset */
253  get_interleaved_ue_golomb(gb); /* chroma excursion */
254  dsh->color_range = luma_offset ? AVCOL_RANGE_MPEG
255  : AVCOL_RANGE_JPEG;
256  }
257  }
258  /* [DIRAC_STD] Table 10.5
259  * Available signal range presets <--> pixel_range_presets */
260  if (dsh->pixel_range_index > 0) {
261  idx = dsh->pixel_range_index - 1;
262  luma_depth = pixel_range_presets[idx].bitdepth;
263  dsh->color_range = pixel_range_presets[idx].color_range;
264  }
265 
266  dsh->bit_depth = luma_depth;
267 
268  /* Full range 8 bts uses the same pix_fmts as limited range 8 bits */
269  dsh->pixel_range_index += dsh->pixel_range_index == 1;
270 
271  if (dsh->pixel_range_index < 2U)
272  return AVERROR_INVALIDDATA;
273 
274  dsh->pix_fmt = dirac_pix_fmt[dsh->chroma_format][dsh->pixel_range_index-2];
275  ret = av_pix_fmt_get_chroma_sub_sample(dsh->pix_fmt, &chroma_x_shift, &chroma_y_shift);
276  if (ret)
277  return ret;
278 
279  if ((dsh->width % (1<<chroma_x_shift)) || (dsh->height % (1<<chroma_y_shift))) {
280  if (log_ctx)
281  av_log(log_ctx, AV_LOG_ERROR, "Dimensions must be an integer multiple of the chroma subsampling\n");
282  return AVERROR_INVALIDDATA;
283  }
284 
285  /* [DIRAC_STD] 10.3.9 Colour specification. colour_spec(video_params) */
286  if (get_bits1(gb)) { /* [DIRAC_STD] custom_colour_spec_flag */
287  /* [DIRAC_STD] index */
288  idx = dsh->color_spec_index = get_interleaved_ue_golomb(gb);
289 
290  if (dsh->color_spec_index > 4U)
291  return AVERROR_INVALIDDATA;
292 
293  dsh->color_primaries = dirac_color_presets[idx].color_primaries;
294  dsh->colorspace = dirac_color_presets[idx].colorspace;
295  dsh->color_trc = dirac_color_presets[idx].color_trc;
296 
297  if (!dsh->color_spec_index) {
298  /* [DIRAC_STD] 10.3.9.1 Colour primaries */
299  if (get_bits1(gb)) {
300  idx = get_interleaved_ue_golomb(gb);
301  if (idx < 3U)
302  dsh->color_primaries = dirac_primaries[idx];
303  }
304  /* [DIRAC_STD] 10.3.9.2 Colour matrix */
305  if (get_bits1(gb)) {
306  idx = get_interleaved_ue_golomb(gb);
307  if (!idx)
308  dsh->colorspace = AVCOL_SPC_BT709;
309  else if (idx == 1)
310  dsh->colorspace = AVCOL_SPC_BT470BG;
311  }
312  /* [DIRAC_STD] 10.3.9.3 Transfer function */
313  if (get_bits1(gb) && !get_interleaved_ue_golomb(gb))
314  dsh->color_trc = AVCOL_TRC_BT709;
315  }
316  } else {
317  idx = dsh->color_spec_index;
318  dsh->color_primaries = dirac_color_presets[idx].color_primaries;
319  dsh->colorspace = dirac_color_presets[idx].colorspace;
320  dsh->color_trc = dirac_color_presets[idx].color_trc;
321  }
322 
323  return 0;
324 }
325 
326 /* [DIRAC_STD] 10. Sequence Header. sequence_header() */
327 int av_dirac_parse_sequence_header(AVDiracSeqHeader **pdsh,
328  const uint8_t *buf, size_t buf_size,
329  void *log_ctx)
330 {
331  AVDiracSeqHeader *dsh;
332  GetBitContext gb;
333  unsigned video_format, picture_coding_mode;
334  int ret;
335 
336  dsh = av_mallocz(sizeof(*dsh));
337  if (!dsh)
338  return AVERROR(ENOMEM);
339 
340  ret = init_get_bits8(&gb, buf, buf_size);
341  if (ret < 0)
342  goto fail;
343 
344  /* [DIRAC_SPEC] 10.1 Parse Parameters. parse_parameters() */
345  dsh->version.major = get_interleaved_ue_golomb(&gb);
346  dsh->version.minor = get_interleaved_ue_golomb(&gb);
347  dsh->profile = get_interleaved_ue_golomb(&gb);
348  dsh->level = get_interleaved_ue_golomb(&gb);
349  /* [DIRAC_SPEC] sequence_header() -> base_video_format as defined in
350  * 10.2 Base Video Format, table 10.1 Dirac predefined video formats */
351  video_format = get_interleaved_ue_golomb(&gb);
352 
353  if (dsh->version.major < 2 && log_ctx)
354  av_log(log_ctx, AV_LOG_WARNING, "Stream is old and may not work\n");
355  else if (dsh->version.major > 2 && log_ctx)
356  av_log(log_ctx, AV_LOG_WARNING, "Stream may have unhandled features\n");
357 
358  if (video_format > 20U) {
359  ret = AVERROR_INVALIDDATA;
360  goto fail;
361  }
362 
363  /* Fill in defaults for the source parameters. */
364  dsh->width = dirac_source_parameters_defaults[video_format].width;
365  dsh->height = dirac_source_parameters_defaults[video_format].height;
366  dsh->chroma_format = dirac_source_parameters_defaults[video_format].chroma_format;
367  dsh->interlaced = dirac_source_parameters_defaults[video_format].interlaced;
368  dsh->top_field_first = dirac_source_parameters_defaults[video_format].top_field_first;
369  dsh->frame_rate_index = dirac_source_parameters_defaults[video_format].frame_rate_index;
370  dsh->aspect_ratio_index = dirac_source_parameters_defaults[video_format].aspect_ratio_index;
371  dsh->clean_width = dirac_source_parameters_defaults[video_format].clean_width;
372  dsh->clean_height = dirac_source_parameters_defaults[video_format].clean_height;
373  dsh->clean_left_offset = dirac_source_parameters_defaults[video_format].clean_left_offset;
374  dsh->clean_right_offset = dirac_source_parameters_defaults[video_format].clean_right_offset;
375  dsh->pixel_range_index = dirac_source_parameters_defaults[video_format].pixel_range_index;
376  dsh->color_spec_index = dirac_source_parameters_defaults[video_format].color_spec_index;
377 
378  /* [DIRAC_STD] 10.3 Source Parameters
379  * Override the defaults. */
380  ret = parse_source_parameters(dsh, &gb, log_ctx);
381  if (ret < 0)
382  goto fail;
383 
384  /* [DIRAC_STD] picture_coding_mode shall be 0 for fields and 1 for frames
385  * currently only used to signal field coding */
386  picture_coding_mode = get_interleaved_ue_golomb(&gb);
387  if (picture_coding_mode != 0) {
388  if (log_ctx) {
389  av_log(log_ctx, AV_LOG_ERROR, "Unsupported picture coding mode %d",
390  picture_coding_mode);
391  }
392  ret = AVERROR_INVALIDDATA;
393  goto fail;
394  }
395 
396  *pdsh = dsh;
397  return 0;
398 fail:
399  av_freep(&dsh);
400  *pdsh = NULL;
401  return ret;
402 }
403 #else
404 int av_dirac_parse_sequence_header(AVDiracSeqHeader **pdsh,
405  const uint8_t *buf, size_t buf_size,
406  void *log_ctx)
407 {
408  return AVERROR(ENOSYS);
409 }
410 #endif
av_dirac_parse_sequence_header
int av_dirac_parse_sequence_header(AVDiracSeqHeader **pdsh, const uint8_t *buf, size_t buf_size, void *log_ctx)
Parse a Dirac sequence header.
Definition: dirac.c:404
AV_LOG_WARNING
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:186
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:71
AVERROR
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later. That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another. Frame references ownership and permissions
AVColorTransferCharacteristic
AVColorTransferCharacteristic
Color Transfer Characteristic.
Definition: pixfmt.h:580
get_interleaved_ue_golomb
static unsigned get_interleaved_ue_golomb(GetBitContext *gb)
Definition: golomb.h:143
AVDiracSeqHeader::color_trc
enum AVColorTransferCharacteristic color_trc
Definition: dirac.h:113
DiracVersionInfo::major
int major
Definition: dirac.h:81
pixdesc.h
AVCOL_RANGE_JPEG
@ AVCOL_RANGE_JPEG
Full range content.
Definition: pixfmt.h:686
bitdepth
#define bitdepth
Definition: aom_film_grain_template.c:67
AVCOL_TRC_UNSPECIFIED
@ AVCOL_TRC_UNSPECIFIED
Definition: pixfmt.h:583
AV_PIX_FMT_YUV420P10
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:478
AVDiracSeqHeader::top_field_first
uint8_t top_field_first
Definition: dirac.h:91
AVDiracSeqHeader::pixel_range_index
uint8_t pixel_range_index
index into dirac_pixel_range_presets[]
Definition: dirac.h:101
AVColorPrimaries
AVColorPrimaries
Chromaticity coordinates of the source primaries.
Definition: pixfmt.h:555
AVDiracSeqHeader::interlaced
uint8_t interlaced
Definition: dirac.h:90
AVDiracSeqHeader::color_range
enum AVColorRange color_range
Definition: dirac.h:111
AVDiracSeqHeader::sample_aspect_ratio
AVRational sample_aspect_ratio
Definition: dirac.h:108
golomb.h
exp golomb vlc stuff
AVCOL_SPC_BT470BG
@ AVCOL_SPC_BT470BG
also ITU-R BT601-6 625 / ITU-R BT1358 625 / ITU-R BT1700 625 PAL & SECAM / IEC 61966-2-4 xvYCC601
Definition: pixfmt.h:615
AVDiracSeqHeader::level
int level
Definition: dirac.h:105
AVDiracSeqHeader::version
DiracVersionInfo version
Definition: dirac.h:116
fail
#define fail()
Definition: checkasm.h:179
GetBitContext
Definition: get_bits.h:108
av_pix_fmt_get_chroma_sub_sample
int av_pix_fmt_get_chroma_sub_sample(enum AVPixelFormat pix_fmt, int *h_shift, int *v_shift)
Utility function to access log2_chroma_w log2_chroma_h from the pixel format AVPixFmtDescriptor.
Definition: pixdesc.c:2993
AVRational::num
int num
Numerator.
Definition: rational.h:59
dirac.h
AV_PIX_FMT_YUV444P10
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:481
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
AVDiracSeqHeader::bit_depth
int bit_depth
Definition: dirac.h:117
init_get_bits8
static int init_get_bits8(GetBitContext *s, const uint8_t *buffer, int byte_size)
Initialize GetBitContext.
Definition: get_bits.h:545
width
#define width
AVDiracSeqHeader::profile
int profile
Definition: dirac.h:104
get_bits.h
AV_PIX_FMT_YUV420P
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:73
color_range
color_range
Definition: vf_selectivecolor.c:43
AVCOL_PRI_BT470BG
@ AVCOL_PRI_BT470BG
also ITU-R BT601-6 625 / ITU-R BT1358 625 / ITU-R BT1700 625 PAL & SECAM
Definition: pixfmt.h:562
AVDiracSeqHeader::chroma_format
uint8_t chroma_format
0: 444 1: 422 2: 420
Definition: dirac.h:88
AVCOL_PRI_SMPTE170M
@ AVCOL_PRI_SMPTE170M
also ITU-R BT601-6 525 / ITU-R BT1358 525 / ITU-R BT1700 NTSC
Definition: pixfmt.h:563
AVDiracSeqHeader::framerate
AVRational framerate
Definition: dirac.h:107
NULL
#define NULL
Definition: coverity.c:32
AVRational
Rational number (pair of numerator and denominator).
Definition: rational.h:58
AVDiracSeqHeader::colorspace
enum AVColorSpace colorspace
Definition: dirac.h:114
AVCOL_PRI_BT709
@ AVCOL_PRI_BT709
also ITU-R BT1361 / IEC 61966-2-4 / SMPTE RP 177 Annex B
Definition: pixfmt.h:557
get_bits1
static unsigned int get_bits1(GetBitContext *s)
Definition: get_bits.h:388
AVDiracSeqHeader::clean_height
uint16_t clean_height
Definition: dirac.h:97
AVDiracSeqHeader::clean_width
uint16_t clean_width
Definition: dirac.h:96
AV_PIX_FMT_YUV422P10
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:479
AVDiracSeqHeader::clean_right_offset
uint16_t clean_right_offset
Definition: dirac.h:99
AVDiracSeqHeader::color_spec_index
uint8_t color_spec_index
index into dirac_color_spec_presets[]
Definition: dirac.h:102
color_primaries
static const AVColorPrimariesDesc color_primaries[AVCOL_PRI_NB]
Definition: csp.c:76
AVDiracSeqHeader::frame_rate_index
uint8_t frame_rate_index
index into dirac_frame_rate[]
Definition: dirac.h:93
AV_PIX_FMT_YUV422P12
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:483
AV_PIX_FMT_YUV444P12
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:485
height
#define height
AVCOL_TRC_BT709
@ AVCOL_TRC_BT709
also ITU-R BT1361
Definition: pixfmt.h:582
interlaced
uint8_t interlaced
Definition: mxfenc.c:2264
AVColorSpace
AVColorSpace
YUV colorspace type.
Definition: pixfmt.h:609
av_mallocz
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:256
AVCOL_RANGE_MPEG
@ AVCOL_RANGE_MPEG
Narrow or limited range content.
Definition: pixfmt.h:669
DiracVersionInfo::minor
int minor
Definition: dirac.h:82
ff_mpeg12_frame_rate_tab
const AVRational ff_mpeg12_frame_rate_tab[]
Definition: mpeg12framerate.c:24
AVDiracSeqHeader
Definition: dirac.h:85
ret
ret
Definition: filter_design.txt:187
AVDiracSeqHeader::clean_left_offset
uint16_t clean_left_offset
Definition: dirac.h:98
AV_PIX_FMT_YUV420P12
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:482
U
#define U(x)
Definition: vpx_arith.h:37
mpeg12data.h
AVDiracSeqHeader::pix_fmt
enum AVPixelFormat pix_fmt
Definition: dirac.h:110
AVRational::den
int den
Denominator.
Definition: rational.h:60
AV_PIX_FMT_YUV444P
@ AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:78
AV_PIX_FMT_YUV422P
@ AV_PIX_FMT_YUV422P
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:77
AVDiracSeqHeader::aspect_ratio_index
uint8_t aspect_ratio_index
index into dirac_aspect_ratio[]
Definition: dirac.h:94
mem.h
AVDiracSeqHeader::width
unsigned width
Definition: dirac.h:86
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:34
AVDiracSeqHeader::height
unsigned height
Definition: dirac.h:87
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:27
AVERROR_INVALIDDATA
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:61
AVCOL_SPC_BT709
@ AVCOL_SPC_BT709
also ITU-R BT1361 / IEC 61966-2-4 xvYCC709 / derived in SMPTE RP 177 Annex B
Definition: pixfmt.h:611
AVColorRange
AVColorRange
Visual content value range.
Definition: pixfmt.h:651
AVDiracSeqHeader::color_primaries
enum AVColorPrimaries color_primaries
Definition: dirac.h:112
av_log2
int av_log2(unsigned v)
Definition: intmath.c:26
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