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hevc_sei.c
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1 /*
2  * HEVC Supplementary Enhancement Information messages
3  *
4  * Copyright (C) 2012 - 2013 Guillaume Martres
5  * Copyright (C) 2012 - 2013 Gildas Cocherel
6  * Copyright (C) 2013 Vittorio Giovara
7  *
8  * This file is part of FFmpeg.
9  *
10  * FFmpeg is free software; you can redistribute it and/or
11  * modify it under the terms of the GNU Lesser General Public
12  * License as published by the Free Software Foundation; either
13  * version 2.1 of the License, or (at your option) any later version.
14  *
15  * FFmpeg is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18  * Lesser General Public License for more details.
19  *
20  * You should have received a copy of the GNU Lesser General Public
21  * License along with FFmpeg; if not, write to the Free Software
22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23  */
24 
25 #include "golomb.h"
26 #include "hevc_ps.h"
27 #include "hevc_sei.h"
28 
30 {
31  int cIdx, i;
32  uint8_t hash_type;
33  //uint16_t picture_crc;
34  //uint32_t picture_checksum;
35  hash_type = get_bits(gb, 8);
36 
37  for (cIdx = 0; cIdx < 3/*((s->sps->chroma_format_idc == 0) ? 1 : 3)*/; cIdx++) {
38  if (hash_type == 0) {
39  s->is_md5 = 1;
40  for (i = 0; i < 16; i++)
41  s->md5[cIdx][i] = get_bits(gb, 8);
42  } else if (hash_type == 1) {
43  // picture_crc = get_bits(gb, 16);
44  skip_bits(gb, 16);
45  } else if (hash_type == 2) {
46  // picture_checksum = get_bits_long(gb, 32);
47  skip_bits(gb, 32);
48  }
49  }
50  return 0;
51 }
52 
54 {
55  int i;
56  // Mastering primaries
57  for (i = 0; i < 3; i++) {
58  s->display_primaries[i][0] = get_bits(gb, 16);
59  s->display_primaries[i][1] = get_bits(gb, 16);
60  }
61  // White point (x, y)
62  s->white_point[0] = get_bits(gb, 16);
63  s->white_point[1] = get_bits(gb, 16);
64 
65  // Max and min luminance of mastering display
66  s->max_luminance = get_bits_long(gb, 32);
67  s->min_luminance = get_bits_long(gb, 32);
68 
69  // As this SEI message comes before the first frame that references it,
70  // initialize the flag to 2 and decrement on IRAP access unit so it
71  // persists for the coded video sequence (e.g., between two IRAPs)
72  s->present = 2;
73  return 0;
74 }
75 
77 {
78  // Max and average light levels
81  // As this SEI message comes before the first frame that references it,
82  // initialize the flag to 2 and decrement on IRAP access unit so it
83  // persists for the coded video sequence (e.g., between two IRAPs)
84  s->present = 2;
85  return 0;
86 }
87 
89 {
90  get_ue_golomb_long(gb); // frame_packing_arrangement_id
91  s->present = !get_bits1(gb);
92 
93  if (s->present) {
94  s->arrangement_type = get_bits(gb, 7);
97 
98  // spatial_flipping_flag, frame0_flipped_flag, field_views_flag
99  skip_bits(gb, 3);
101  // frame0_self_contained_flag, frame1_self_contained_flag
102  skip_bits(gb, 2);
103 
104  if (!s->quincunx_subsampling && s->arrangement_type != 5)
105  skip_bits(gb, 16); // frame[01]_grid_position_[xy]
106  skip_bits(gb, 8); // frame_packing_arrangement_reserved_byte
107  skip_bits1(gb); // frame_packing_arrangement_persistence_flag
108  }
109  skip_bits1(gb); // upsampled_aspect_ratio_flag
110  return 0;
111 }
112 
114 {
115  s->present = !get_bits1(gb);
116 
117  if (s->present) {
118  s->hflip = get_bits1(gb); // hor_flip
119  s->vflip = get_bits1(gb); // ver_flip
120 
121  s->anticlockwise_rotation = get_bits(gb, 16);
122  skip_bits1(gb); // display_orientation_persistence_flag
123  }
124 
125  return 0;
126 }
127 
129  void *logctx, int size)
130 {
132  HEVCSPS *sps;
133 
135  return(AVERROR(ENOMEM));
137 
139  int pic_struct = get_bits(gb, 4);
141  if (pic_struct == 2 || pic_struct == 10 || pic_struct == 12) {
142  av_log(logctx, AV_LOG_DEBUG, "BOTTOM Field\n");
144  } else if (pic_struct == 1 || pic_struct == 9 || pic_struct == 11) {
145  av_log(logctx, AV_LOG_DEBUG, "TOP Field\n");
147  }
148  get_bits(gb, 2); // source_scan_type
149  get_bits(gb, 1); // duplicate_flag
150  skip_bits1(gb);
151  size--;
152  }
153  skip_bits_long(gb, 8 * size);
154 
155  return 0;
156 }
157 
159  int size)
160 {
161  int flag;
162  int user_data_type_code;
163  int cc_count;
164 
165  if (size < 3)
166  return AVERROR(EINVAL);
167 
168  user_data_type_code = get_bits(gb, 8);
169  if (user_data_type_code == 0x3) {
170  skip_bits(gb, 1); // reserved
171 
172  flag = get_bits(gb, 1); // process_cc_data_flag
173  if (flag) {
174  skip_bits(gb, 1);
175  cc_count = get_bits(gb, 5);
176  skip_bits(gb, 8); // reserved
177  size -= 2;
178 
179  if (cc_count && size >= cc_count * 3) {
180  const uint64_t new_size = (s->a53_caption_size + cc_count
181  * UINT64_C(3));
182  int i, ret;
183 
184  if (new_size > INT_MAX)
185  return AVERROR(EINVAL);
186 
187  /* Allow merging of the cc data from two fields. */
188  ret = av_reallocp(&s->a53_caption, new_size);
189  if (ret < 0)
190  return ret;
191 
192  for (i = 0; i < cc_count; i++) {
193  s->a53_caption[s->a53_caption_size++] = get_bits(gb, 8);
194  s->a53_caption[s->a53_caption_size++] = get_bits(gb, 8);
195  s->a53_caption[s->a53_caption_size++] = get_bits(gb, 8);
196  }
197  skip_bits(gb, 8); // marker_bits
198  }
199  }
200  } else {
201  int i;
202  for (i = 0; i < size - 1; i++)
203  skip_bits(gb, 8);
204  }
205 
206  return 0;
207 }
208 
210  int size)
211 {
212  uint32_t country_code;
213  uint32_t user_identifier;
214 
215  if (size < 7)
216  return AVERROR(EINVAL);
217  size -= 7;
218 
219  country_code = get_bits(gb, 8);
220  if (country_code == 0xFF) {
221  skip_bits(gb, 8);
222  size--;
223  }
224 
225  skip_bits(gb, 8);
226  skip_bits(gb, 8);
227 
228  user_identifier = get_bits_long(gb, 32);
229 
230  switch (user_identifier) {
231  case MKBETAG('G', 'A', '9', '4'):
233  default:
234  skip_bits_long(gb, size * 8);
235  break;
236  }
237  return 0;
238 }
239 
241 {
242  int num_sps_ids_minus1;
243  int i;
244  unsigned active_seq_parameter_set_id;
245 
246  get_bits(gb, 4); // active_video_parameter_set_id
247  get_bits(gb, 1); // self_contained_cvs_flag
248  get_bits(gb, 1); // num_sps_ids_minus1
249  num_sps_ids_minus1 = get_ue_golomb_long(gb); // num_sps_ids_minus1
250 
251  if (num_sps_ids_minus1 < 0 || num_sps_ids_minus1 > 15) {
252  av_log(logctx, AV_LOG_ERROR, "num_sps_ids_minus1 %d invalid\n", num_sps_ids_minus1);
253  return AVERROR_INVALIDDATA;
254  }
255 
256  active_seq_parameter_set_id = get_ue_golomb_long(gb);
257  if (active_seq_parameter_set_id >= HEVC_MAX_SPS_COUNT) {
258  av_log(logctx, AV_LOG_ERROR, "active_parameter_set_id %d invalid\n", active_seq_parameter_set_id);
259  return AVERROR_INVALIDDATA;
260  }
261  s->active_seq_parameter_set_id = active_seq_parameter_set_id;
262 
263  for (i = 1; i <= num_sps_ids_minus1; i++)
264  get_ue_golomb_long(gb); // active_seq_parameter_set_id[i]
265 
266  return 0;
267 }
268 
270 {
271  s->present = 1;
273  return 0;
274 }
275 
276 static int decode_nal_sei_prefix(GetBitContext *gb, void *logctx, HEVCSEI *s,
277  const HEVCParamSets *ps, int type, int size)
278 {
279  switch (type) {
280  case 256: // Mismatched value from HM 8.1
287  return decode_nal_sei_pic_timing(s, gb, ps, logctx, size);
293  return decode_nal_sei_active_parameter_sets(s, gb, logctx);
298  default:
299  av_log(logctx, AV_LOG_DEBUG, "Skipped PREFIX SEI %d\n", type);
300  skip_bits_long(gb, 8 * size);
301  return 0;
302  }
303 }
304 
305 static int decode_nal_sei_suffix(GetBitContext *gb, void *logctx, HEVCSEI *s,
306  int type, int size)
307 {
308  switch (type) {
311  default:
312  av_log(logctx, AV_LOG_DEBUG, "Skipped SUFFIX SEI %d\n", type);
313  skip_bits_long(gb, 8 * size);
314  return 0;
315  }
316 }
317 
318 static int decode_nal_sei_message(GetBitContext *gb, void *logctx, HEVCSEI *s,
319  const HEVCParamSets *ps, int nal_unit_type)
320 {
321  int payload_type = 0;
322  int payload_size = 0;
323  int byte = 0xFF;
324  av_log(logctx, AV_LOG_DEBUG, "Decoding SEI\n");
325 
326  while (byte == 0xFF) {
327  if (get_bits_left(gb) < 16 || payload_type > INT_MAX - 255)
328  return AVERROR_INVALIDDATA;
329  byte = get_bits(gb, 8);
330  payload_type += byte;
331  }
332  byte = 0xFF;
333  while (byte == 0xFF) {
334  if (get_bits_left(gb) < 8 + 8LL*payload_size)
335  return AVERROR_INVALIDDATA;
336  byte = get_bits(gb, 8);
337  payload_size += byte;
338  }
339  if (nal_unit_type == HEVC_NAL_SEI_PREFIX) {
340  return decode_nal_sei_prefix(gb, logctx, s, ps, payload_type, payload_size);
341  } else { /* nal_unit_type == NAL_SEI_SUFFIX */
342  return decode_nal_sei_suffix(gb, logctx, s, payload_type, payload_size);
343  }
344 }
345 
347 {
348  return get_bits_left(gb) > 0 && show_bits(gb, 8) != 0x80;
349 }
350 
352  const HEVCParamSets *ps, int type)
353 {
354  int ret;
355 
356  do {
357  ret = decode_nal_sei_message(gb, logctx, s, ps, type);
358  if (ret < 0)
359  return ret;
360  } while (more_rbsp_data(gb));
361  return 1;
362 }
363 
365 {
368 }
static int decode_nal_sei_suffix(GetBitContext *gb, void *logctx, HEVCSEI *s, int type, int size)
Definition: hevc_sei.c:305
const char * s
Definition: avisynth_c.h:768
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
#define flag(name)
Definition: cbs_h2645.c:345
int current_frame_is_frame0_flag
Definition: hevc_sei.h:70
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
Definition: get_bits.h:261
static void skip_bits_long(GetBitContext *s, int n)
Definition: get_bits.h:204
VUI vui
Definition: hevc_ps.h:250
static int decode_nal_sei_display_orientation(HEVCSEIDisplayOrientation *s, GetBitContext *gb)
Definition: hevc_sei.c:113
uint8_t is_md5
Definition: hevc_sei.h:62
int a53_caption_size
Definition: hevc_sei.h:84
static int more_rbsp_data(GetBitContext *gb)
Definition: hevc_sei.c:346
HEVCSEIMasteringDisplay mastering_display
Definition: hevc_sei.h:113
static int decode_nal_sei_message(GetBitContext *gb, void *logctx, HEVCSEI *s, const HEVCParamSets *ps, int nal_unit_type)
Definition: hevc_sei.c:318
AVBufferRef * sps_list[HEVC_MAX_SPS_COUNT]
Definition: hevc_ps.h:396
HEVCSEIContentLight content_light
Definition: hevc_sei.h:114
uint8_t
static int decode_nal_sei_alternative_transfer(HEVCSEIAlternativeTransfer *s, GetBitContext *gb)
Definition: hevc_sei.c:269
int active_seq_parameter_set_id
Definition: hevc_sei.h:115
int frame_field_info_present_flag
Definition: hevc_ps.h:152
int quincunx_subsampling
Definition: hevc_sei.h:69
ptrdiff_t size
Definition: opengl_enc.c:101
static int decode_nal_sei_content_light_info(HEVCSEIContentLight *s, GetBitContext *gb)
Definition: hevc_sei.c:76
#define av_log(a,...)
static int decode_registered_user_data_closed_caption(HEVCSEIA53Caption *s, GetBitContext *gb, int size)
Definition: hevc_sei.c:158
static int get_bits_left(GetBitContext *gb)
Definition: get_bits.h:587
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
int content_interpretation_type
Definition: hevc_sei.h:68
uint8_t md5[3][16]
Definition: hevc_sei.h:61
static int decode_nal_sei_active_parameter_sets(HEVCSEI *s, GetBitContext *gb, void *logctx)
Definition: hevc_sei.c:240
#define AVERROR(e)
Definition: error.h:43
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
static unsigned int show_bits(GetBitContext *s, int n)
Show 1-25 bits.
Definition: get_bits.h:296
static unsigned get_ue_golomb_long(GetBitContext *gb)
Read an unsigned Exp-Golomb code in the range 0 to UINT32_MAX-1.
Definition: golomb.h:85
int av_reallocp(void *ptr, size_t size)
Allocate, reallocate, or free a block of memory through a pointer to a pointer.
Definition: mem.c:163
void ff_hevc_reset_sei(HEVCSEI *s)
Reset SEI values that are stored on the Context.
Definition: hevc_sei.c:364
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_WB32 unsigned int_TMPL AV_WB24 unsigned int_TMPL AV_WB16 unsigned int_TMPL byte
Definition: bytestream.h:87
static int decode_nal_sei_user_data_registered_itu_t_t35(HEVCSEI *s, GetBitContext *gb, int size)
Definition: hevc_sei.c:209
uint8_t * data
The data buffer.
Definition: buffer.h:89
static int decode_nal_sei_frame_packing_arrangement(HEVCSEIFramePacking *s, GetBitContext *gb)
Definition: hevc_sei.c:88
GLint GLenum type
Definition: opengl_enc.c:105
HEVCSEIFramePacking frame_packing
Definition: hevc_sei.h:109
static unsigned int get_bits1(GetBitContext *s)
Definition: get_bits.h:313
static void skip_bits1(GetBitContext *s)
Definition: get_bits.h:338
static void skip_bits(GetBitContext *s, int n)
Definition: get_bits.h:306
uint16_t max_pic_average_light_level
Definition: hevc_sei.h:99
static int FUNC() sps(CodedBitstreamContext *ctx, RWContext *rw, H264RawSPS *current)
HEVCSEIPictureHash picture_hash
Definition: hevc_sei.h:108
static unsigned int get_bits_long(GetBitContext *s, int n)
Read 0-32 bits.
Definition: get_bits.h:346
uint8_t * a53_caption
Definition: hevc_sei.h:85
static int decode_nal_sei_decoded_picture_hash(HEVCSEIPictureHash *s, GetBitContext *gb)
Definition: hevc_sei.c:29
HEVCSEIPictureTiming picture_timing
Definition: hevc_sei.h:111
static int decode_nal_sei_pic_timing(HEVCSEI *s, GetBitContext *gb, const HEVCParamSets *ps, void *logctx, int size)
Definition: hevc_sei.c:128
if(ret< 0)
Definition: vf_mcdeint.c:279
HEVCSEIAlternativeTransfer alternative_transfer
Definition: hevc_sei.h:116
HEVCSEIDisplayOrientation display_orientation
Definition: hevc_sei.h:110
uint16_t max_content_light_level
Definition: hevc_sei.h:98
uint32_t max_luminance
Definition: hevc_sei.h:92
#define MKBETAG(a, b, c, d)
Definition: common.h:367
static int decode_nal_sei_prefix(GetBitContext *gb, void *logctx, HEVCSEI *s, const HEVCParamSets *ps, int type, int size)
Definition: hevc_sei.c:276
uint32_t min_luminance
Definition: hevc_sei.h:93
static int decode_nal_sei_mastering_display_info(HEVCSEIMasteringDisplay *s, GetBitContext *gb)
Definition: hevc_sei.c:53
HEVCSEIA53Caption a53_caption
Definition: hevc_sei.h:112
#define av_freep(p)
exp golomb vlc stuff
uint16_t white_point[2]
Definition: hevc_sei.h:91
int ff_hevc_decode_nal_sei(GetBitContext *gb, void *logctx, HEVCSEI *s, const HEVCParamSets *ps, int type)
Definition: hevc_sei.c:351
uint16_t display_primaries[3][2]
Definition: hevc_sei.h:90