media/mp4/box_definitions.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef MEDIA_MP4_BOX_DEFINITIONS_H_
   6 #define MEDIA_MP4_BOX_DEFINITIONS_H_
   7
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/basictypes.h"
  12 #include "base/compiler_specific.h"
  13 #include "media/base/media_export.h"
  14 #include "media/mp4/aac.h"
  15 #include "media/mp4/avc.h"
  16 #include "media/mp4/box_reader.h"
  17 #include "media/mp4/fourccs.h"
  18
  19 namespace media {
  20 namespace mp4 {
  21
  22 enum TrackType {
  23   kInvalid = 0,
  24   kVideo,
  25   kAudio,
  26   kHint
  27 };
  28
  29 #define DECLARE_BOX_METHODS(T) \
  30   T(); \
  31   virtual ~T(); \
  32   virtual bool Parse(BoxReader* reader) OVERRIDE; \
  33   virtual FourCC BoxType() const OVERRIDE; \
  34
  35 struct MEDIA_EXPORT FileType : Box {
  36   DECLARE_BOX_METHODS(FileType);
  37
  38   FourCC major_brand;
  39   uint32 minor_version;
  40 };
  41
  42 struct MEDIA_EXPORT ProtectionSystemSpecificHeader : Box {
  43   DECLARE_BOX_METHODS(ProtectionSystemSpecificHeader);
  44
  45   std::vector<uint8> system_id;
  46   std::vector<uint8> data;
  47 };
  48
  49 struct MEDIA_EXPORT SampleAuxiliaryInformationOffset : Box {
  50   DECLARE_BOX_METHODS(SampleAuxiliaryInformationOffset);
  51
  52   std::vector<uint64> offsets;
  53 };
  54
  55 struct MEDIA_EXPORT SampleAuxiliaryInformationSize : Box {
  56   DECLARE_BOX_METHODS(SampleAuxiliaryInformationSize);
  57
  58   uint8 default_sample_info_size;
  59   uint32 sample_count;
  60   std::vector<uint8> sample_info_sizes;
  61 };
  62
  63 struct MEDIA_EXPORT OriginalFormat : Box {
  64   DECLARE_BOX_METHODS(OriginalFormat);
  65
  66   FourCC format;
  67 };
  68
  69 struct MEDIA_EXPORT SchemeType : Box {
  70   DECLARE_BOX_METHODS(SchemeType);
  71
  72   FourCC type;
  73   uint32 version;
  74 };
  75
  76 struct MEDIA_EXPORT TrackEncryption : Box {
  77   DECLARE_BOX_METHODS(TrackEncryption);
  78
  79   // Note: this definition is specific to the CENC protection type.
  80   bool is_encrypted;
  81   uint8 default_iv_size;
  82   std::vector<uint8> default_kid;
  83 };
  84
  85 struct MEDIA_EXPORT SchemeInfo : Box {
  86   DECLARE_BOX_METHODS(SchemeInfo);
  87
  88   TrackEncryption track_encryption;
  89 };
  90
  91 struct MEDIA_EXPORT ProtectionSchemeInfo : Box {
  92   DECLARE_BOX_METHODS(ProtectionSchemeInfo);
  93
  94   OriginalFormat format;
  95   SchemeType type;
  96   SchemeInfo info;
  97 };
  98
  99 struct MEDIA_EXPORT MovieHeader : Box {
 100   DECLARE_BOX_METHODS(MovieHeader);
 101
 102   uint64 creation_time;
 103   uint64 modification_time;
 104   uint32 timescale;
 105   uint64 duration;
 106   int32 rate;
 107   int16 volume;
 108   uint32 next_track_id;
 109 };
 110
 111 struct MEDIA_EXPORT TrackHeader : Box {
 112   DECLARE_BOX_METHODS(TrackHeader);
 113
 114   uint64 creation_time;
 115   uint64 modification_time;
 116   uint32 track_id;
 117   uint64 duration;
 118   int16 layer;
 119   int16 alternate_group;
 120   int16 volume;
 121   uint32 width;
 122   uint32 height;
 123 };
 124
 125 struct MEDIA_EXPORT EditListEntry {
 126   uint64 segment_duration;
 127   int64 media_time;
 128   int16 media_rate_integer;
 129   int16 media_rate_fraction;
 130 };
 131
 132 struct MEDIA_EXPORT EditList : Box {
 133   DECLARE_BOX_METHODS(EditList);
 134
 135   std::vector<EditListEntry> edits;
 136 };
 137
 138 struct MEDIA_EXPORT Edit : Box {
 139   DECLARE_BOX_METHODS(Edit);
 140
 141   EditList list;
 142 };
 143
 144 struct MEDIA_EXPORT HandlerReference : Box {
 145   DECLARE_BOX_METHODS(HandlerReference);
 146
 147   TrackType type;
 148 };
 149
 150 struct MEDIA_EXPORT AVCDecoderConfigurationRecord : Box {
 151   DECLARE_BOX_METHODS(AVCDecoderConfigurationRecord);
 152
 153   uint8 version;
 154   uint8 profile_indication;
 155   uint8 profile_compatibility;
 156   uint8 avc_level;
 157   uint8 length_size;
 158
 159   typedef std::vector<uint8> SPS;
 160   typedef std::vector<uint8> PPS;
 161
 162   std::vector<SPS> sps_list;
 163   std::vector<PPS> pps_list;
 164 };
 165
 166 struct MEDIA_EXPORT PixelAspectRatioBox : Box {
 167   DECLARE_BOX_METHODS(PixelAspectRatioBox);
 168
 169   uint32 h_spacing;
 170   uint32 v_spacing;
 171 };
 172
 173 struct MEDIA_EXPORT VideoSampleEntry : Box {
 174   DECLARE_BOX_METHODS(VideoSampleEntry);
 175
 176   FourCC format;
 177   uint16 data_reference_index;
 178   uint16 width;
 179   uint16 height;
 180
 181   PixelAspectRatioBox pixel_aspect;
 182   ProtectionSchemeInfo sinf;
 183
 184   // Currently expected to be present regardless of format.
 185   AVCDecoderConfigurationRecord avcc;
 186 };
 187
 188 struct MEDIA_EXPORT ElementaryStreamDescriptor : Box {
 189   DECLARE_BOX_METHODS(ElementaryStreamDescriptor);
 190
 191   uint8 object_type;
 192   AAC aac;
 193 };
 194
 195 struct MEDIA_EXPORT AudioSampleEntry : Box {
 196   DECLARE_BOX_METHODS(AudioSampleEntry);
 197
 198   FourCC format;
 199   uint16 data_reference_index;
 200   uint16 channelcount;
 201   uint16 samplesize;
 202   uint32 samplerate;
 203
 204   ProtectionSchemeInfo sinf;
 205   ElementaryStreamDescriptor esds;
 206 };
 207
 208 struct MEDIA_EXPORT SampleDescription : Box {
 209   DECLARE_BOX_METHODS(SampleDescription);
 210
 211   TrackType type;
 212   std::vector<VideoSampleEntry> video_entries;
 213   std::vector<AudioSampleEntry> audio_entries;
 214 };
 215
 216 struct MEDIA_EXPORT SampleTable : Box {
 217   DECLARE_BOX_METHODS(SampleTable);
 218
 219   // Media Source specific: we ignore many of the sub-boxes in this box,
 220   // including some that are required to be present in the BMFF spec. This
 221   // includes the 'stts', 'stsc', and 'stco' boxes, which must contain no
 222   // samples in order to be compliant files.
 223   SampleDescription description;
 224 };
 225
 226 struct MEDIA_EXPORT MediaHeader : Box {
 227   DECLARE_BOX_METHODS(MediaHeader);
 228
 229   uint64 creation_time;
 230   uint64 modification_time;
 231   uint32 timescale;
 232   uint64 duration;
 233 };
 234
 235 struct MEDIA_EXPORT MediaInformation : Box {
 236   DECLARE_BOX_METHODS(MediaInformation);
 237
 238   SampleTable sample_table;
 239 };
 240
 241 struct MEDIA_EXPORT Media : Box {
 242   DECLARE_BOX_METHODS(Media);
 243
 244   MediaHeader header;
 245   HandlerReference handler;
 246   MediaInformation information;
 247 };
 248
 249 struct MEDIA_EXPORT Track : Box {
 250   DECLARE_BOX_METHODS(Track);
 251
 252   TrackHeader header;
 253   Media media;
 254   Edit edit;
 255 };
 256
 257 struct MEDIA_EXPORT MovieExtendsHeader : Box {
 258   DECLARE_BOX_METHODS(MovieExtendsHeader);
 259
 260   uint64 fragment_duration;
 261 };
 262
 263 struct MEDIA_EXPORT TrackExtends : Box {
 264   DECLARE_BOX_METHODS(TrackExtends);
 265
 266   uint32 track_id;
 267   uint32 default_sample_description_index;
 268   uint32 default_sample_duration;
 269   uint32 default_sample_size;
 270   uint32 default_sample_flags;
 271 };
 272
 273 struct MEDIA_EXPORT MovieExtends : Box {
 274   DECLARE_BOX_METHODS(MovieExtends);
 275
 276   MovieExtendsHeader header;
 277   std::vector<TrackExtends> tracks;
 278 };
 279
 280 struct MEDIA_EXPORT Movie : Box {
 281   DECLARE_BOX_METHODS(Movie);
 282
 283   bool fragmented;
 284   MovieHeader header;
 285   MovieExtends extends;
 286   std::vector<Track> tracks;
 287   std::vector<ProtectionSystemSpecificHeader> pssh;
 288 };
 289
 290 struct MEDIA_EXPORT TrackFragmentDecodeTime : Box {
 291   DECLARE_BOX_METHODS(TrackFragmentDecodeTime);
 292
 293   uint64 decode_time;
 294 };
 295
 296 struct MEDIA_EXPORT MovieFragmentHeader : Box {
 297   DECLARE_BOX_METHODS(MovieFragmentHeader);
 298
 299   uint32 sequence_number;
 300 };
 301
 302 struct MEDIA_EXPORT TrackFragmentHeader : Box {
 303   DECLARE_BOX_METHODS(TrackFragmentHeader);
 304
 305   uint32 track_id;
 306
 307   uint32 sample_description_index;
 308   uint32 default_sample_duration;
 309   uint32 default_sample_size;
 310   uint32 default_sample_flags;
 311
 312   // As 'flags' might be all zero, we cannot use zeroness alone to identify
 313   // when default_sample_flags wasn't specified, unlike the other values.
 314   bool has_default_sample_flags;
 315 };
 316
 317 struct MEDIA_EXPORT TrackFragmentRun : Box {
 318   DECLARE_BOX_METHODS(TrackFragmentRun);
 319
 320   uint32 sample_count;
 321   uint32 data_offset;
 322   std::vector<uint32> sample_flags;
 323   std::vector<uint32> sample_sizes;
 324   std::vector<uint32> sample_durations;
 325   std::vector<int32> sample_composition_time_offsets;
 326 };
 327
 328 struct MEDIA_EXPORT TrackFragment : Box {
 329   DECLARE_BOX_METHODS(TrackFragment);
 330
 331   TrackFragmentHeader header;
 332   std::vector<TrackFragmentRun> runs;
 333   TrackFragmentDecodeTime decode_time;
 334   SampleAuxiliaryInformationOffset auxiliary_offset;
 335   SampleAuxiliaryInformationSize auxiliary_size;
 336 };
 337
 338 struct MEDIA_EXPORT MovieFragment : Box {
 339   DECLARE_BOX_METHODS(MovieFragment);
 340
 341   MovieFragmentHeader header;
 342   std::vector<TrackFragment> tracks;
 343   std::vector<ProtectionSystemSpecificHeader> pssh;
 344 };
 345
 346 #undef DECLARE_BOX
 347
 348 }  // namespace mp4
 349 }  // namespace media
 350
 351 #endif  // MEDIA_MP4_BOX_DEFINITIONS_H_