1 /* 2 * Copyright (C) 2009 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef META_DATA_H_ 18 19 #define META_DATA_H_ 20 21 #include <sys/types.h> 22 23 #include <stdint.h> 24 25 #include <utils/RefBase.h> 26 #include <utils/KeyedVector.h> 27 #include <utils/String8.h> 28 29 namespace android { 30 31 // The following keys map to int32_t data unless indicated otherwise. 32 enum { 33 kKeyMIMEType = 'mime', // cstring 34 kKeyWidth = 'widt', // int32_t, image pixel 35 kKeyHeight = 'heig', // int32_t, image pixel 36 kKeyDisplayWidth = 'dWid', // int32_t, display/presentation 37 kKeyDisplayHeight = 'dHgt', // int32_t, display/presentation 38 kKeySARWidth = 'sarW', // int32_t, sampleAspectRatio width 39 kKeySARHeight = 'sarH', // int32_t, sampleAspectRatio height 40 41 // a rectangle, if absent assumed to be (0, 0, width - 1, height - 1) 42 kKeyCropRect = 'crop', 43 44 kKeyRotation = 'rotA', // int32_t (angle in degrees) 45 kKeyIFramesInterval = 'ifiv', // int32_t 46 kKeyStride = 'strd', // int32_t 47 kKeySliceHeight = 'slht', // int32_t 48 kKeyChannelCount = '#chn', // int32_t 49 kKeyChannelMask = 'chnm', // int32_t 50 kKeySampleRate = 'srte', // int32_t (audio sampling rate Hz) 51 kKeyFrameRate = 'frmR', // int32_t (video frame rate fps) 52 kKeyBitRate = 'brte', // int32_t (bps) 53 kKeyESDS = 'esds', // raw data 54 kKeyAACProfile = 'aacp', // int32_t 55 kKeyAVCC = 'avcc', // raw data 56 kKeyHVCC = 'hvcc', // raw data 57 kKeyD263 = 'd263', // raw data 58 kKeyVorbisInfo = 'vinf', // raw data 59 kKeyVorbisBooks = 'vboo', // raw data 60 kKeyOpusHeader = 'ohdr', // raw data 61 kKeyOpusCodecDelay = 'ocod', // uint64_t (codec delay in ns) 62 kKeyOpusSeekPreRoll = 'ospr', // uint64_t (seek preroll in ns) 63 kKeyWantsNALFragments = 'NALf', 64 kKeyIsSyncFrame = 'sync', // int32_t (bool) 65 kKeyIsCodecConfig = 'conf', // int32_t (bool) 66 kKeyTime = 'time', // int64_t (usecs) 67 kKeyDecodingTime = 'decT', // int64_t (decoding timestamp in usecs) 68 kKeyNTPTime = 'ntpT', // uint64_t (ntp-timestamp) 69 kKeyTargetTime = 'tarT', // int64_t (usecs) 70 kKeyDriftTime = 'dftT', // int64_t (usecs) 71 kKeyAnchorTime = 'ancT', // int64_t (usecs) 72 kKeyDuration = 'dura', // int64_t (usecs) 73 kKeyPixelFormat = 'pixf', // int32_t 74 kKeyColorFormat = 'colf', // int32_t 75 kKeyColorSpace = 'cols', // int32_t 76 kKeyPlatformPrivate = 'priv', // pointer 77 kKeyDecoderComponent = 'decC', // cstring 78 kKeyBufferID = 'bfID', 79 kKeyMaxInputSize = 'inpS', 80 kKeyMaxWidth = 'maxW', 81 kKeyMaxHeight = 'maxH', 82 kKeyThumbnailTime = 'thbT', // int64_t (usecs) 83 kKeyTrackID = 'trID', 84 kKeyIsDRM = 'idrm', // int32_t (bool) 85 kKeyEncoderDelay = 'encd', // int32_t (frames) 86 kKeyEncoderPadding = 'encp', // int32_t (frames) 87 88 kKeyAlbum = 'albu', // cstring 89 kKeyArtist = 'arti', // cstring 90 kKeyAlbumArtist = 'aart', // cstring 91 kKeyComposer = 'comp', // cstring 92 kKeyGenre = 'genr', // cstring 93 kKeyTitle = 'titl', // cstring 94 kKeyYear = 'year', // cstring 95 kKeyAlbumArt = 'albA', // compressed image data 96 kKeyAlbumArtMIME = 'alAM', // cstring 97 kKeyAuthor = 'auth', // cstring 98 kKeyCDTrackNumber = 'cdtr', // cstring 99 kKeyDiscNumber = 'dnum', // cstring 100 kKeyDate = 'date', // cstring 101 kKeyWriter = 'writ', // cstring 102 kKeyCompilation = 'cpil', // cstring 103 kKeyLocation = 'loc ', // cstring 104 kKeyTimeScale = 'tmsl', // int32_t 105 kKeyCaptureFramerate = 'capF', // float (capture fps) 106 107 // video profile and level 108 kKeyVideoProfile = 'vprf', // int32_t 109 kKeyVideoLevel = 'vlev', // int32_t 110 111 // Set this key to enable authoring files in 64-bit offset 112 kKey64BitFileOffset = 'fobt', // int32_t (bool) 113 kKey2ByteNalLength = '2NAL', // int32_t (bool) 114 115 // Identify the file output format for authoring 116 // Please see <media/mediarecorder.h> for the supported 117 // file output formats. 118 kKeyFileType = 'ftyp', // int32_t 119 120 // Track authoring progress status 121 // kKeyTrackTimeStatus is used to track progress in elapsed time 122 kKeyTrackTimeStatus = 'tktm', // int64_t 123 124 kKeyRealTimeRecording = 'rtrc', // bool (int32_t) 125 kKeyNumBuffers = 'nbbf', // int32_t 126 127 // Ogg files can be tagged to be automatically looping... 128 kKeyAutoLoop = 'autL', // bool (int32_t) 129 130 kKeyValidSamples = 'valD', // int32_t 131 132 kKeyIsUnreadable = 'unre', // bool (int32_t) 133 134 // An indication that a video buffer has been rendered. 135 kKeyRendered = 'rend', // bool (int32_t) 136 137 // The language code for this media 138 kKeyMediaLanguage = 'lang', // cstring 139 140 // To store the timed text format data 141 kKeyTextFormatData = 'text', // raw data 142 143 kKeyRequiresSecureBuffers = 'secu', // bool (int32_t) 144 145 kKeyIsADTS = 'adts', // bool (int32_t) 146 kKeyAACAOT = 'aaot', // int32_t 147 148 // If a MediaBuffer's data represents (at least partially) encrypted 149 // data, the following fields aid in decryption. 150 // The data can be thought of as pairs of plain and encrypted data 151 // fragments, i.e. plain and encrypted data alternate. 152 // The first fragment is by convention plain data (if that's not the 153 // case, simply specify plain fragment size of 0). 154 // kKeyEncryptedSizes and kKeyPlainSizes each map to an array of 155 // size_t values. The sum total of all size_t values of both arrays 156 // must equal the amount of data (i.e. MediaBuffer's range_length()). 157 // If both arrays are present, they must be of the same size. 158 // If only encrypted sizes are present it is assumed that all 159 // plain sizes are 0, i.e. all fragments are encrypted. 160 // To programmatically set these array, use the MetaData::setData API, i.e. 161 // const size_t encSizes[]; 162 // meta->setData( 163 // kKeyEncryptedSizes, 0 /* type */, encSizes, sizeof(encSizes)); 164 // A plain sizes array by itself makes no sense. 165 kKeyEncryptedSizes = 'encr', // size_t[] 166 kKeyPlainSizes = 'plai', // size_t[] 167 kKeyCryptoKey = 'cryK', // uint8_t[16] 168 kKeyCryptoIV = 'cryI', // uint8_t[16] 169 kKeyCryptoMode = 'cryM', // int32_t 170 171 kKeyCryptoDefaultIVSize = 'cryS', // int32_t 172 173 kKeyPssh = 'pssh', // raw data 174 175 // Please see MediaFormat.KEY_IS_AUTOSELECT. 176 kKeyTrackIsAutoselect = 'auto', // bool (int32_t) 177 // Please see MediaFormat.KEY_IS_DEFAULT. 178 kKeyTrackIsDefault = 'dflt', // bool (int32_t) 179 // Similar to MediaFormat.KEY_IS_FORCED_SUBTITLE but pertains to av tracks as well. 180 kKeyTrackIsForced = 'frcd', // bool (int32_t) 181 182 // H264 supplemental enhancement information offsets/sizes 183 kKeySEI = 'sei ', // raw data 184 }; 185 186 enum { 187 kTypeESDS = 'esds', 188 kTypeAVCC = 'avcc', 189 kTypeHVCC = 'hvcc', 190 kTypeD263 = 'd263', 191 }; 192 193 class MetaData : public RefBase { 194 public: 195 MetaData(); 196 MetaData(const MetaData &from); 197 198 enum Type { 199 TYPE_NONE = 'none', 200 TYPE_C_STRING = 'cstr', 201 TYPE_INT32 = 'in32', 202 TYPE_INT64 = 'in64', 203 TYPE_FLOAT = 'floa', 204 TYPE_POINTER = 'ptr ', 205 TYPE_RECT = 'rect', 206 }; 207 208 void clear(); 209 bool remove(uint32_t key); 210 211 bool setCString(uint32_t key, const char *value); 212 bool setInt32(uint32_t key, int32_t value); 213 bool setInt64(uint32_t key, int64_t value); 214 bool setFloat(uint32_t key, float value); 215 bool setPointer(uint32_t key, void *value); 216 217 bool setRect( 218 uint32_t key, 219 int32_t left, int32_t top, 220 int32_t right, int32_t bottom); 221 222 bool findCString(uint32_t key, const char **value); 223 bool findInt32(uint32_t key, int32_t *value); 224 bool findInt64(uint32_t key, int64_t *value); 225 bool findFloat(uint32_t key, float *value); 226 bool findPointer(uint32_t key, void **value); 227 228 bool findRect( 229 uint32_t key, 230 int32_t *left, int32_t *top, 231 int32_t *right, int32_t *bottom); 232 233 bool setData(uint32_t key, uint32_t type, const void *data, size_t size); 234 235 bool findData(uint32_t key, uint32_t *type, 236 const void **data, size_t *size) const; 237 238 bool hasData(uint32_t key) const; 239 240 void dumpToLog() const; 241 242 protected: 243 virtual ~MetaData(); 244 245 private: 246 struct typed_data { 247 typed_data(); 248 ~typed_data(); 249 250 typed_data(const MetaData::typed_data &); 251 typed_data &operator=(const MetaData::typed_data &); 252 253 void clear(); 254 void setData(uint32_t type, const void *data, size_t size); 255 void getData(uint32_t *type, const void **data, size_t *size) const; 256 String8 asString() const; 257 258 private: 259 uint32_t mType; 260 size_t mSize; 261 262 union { 263 void *ext_data; 264 float reservoir; 265 } u; 266 267 bool usesReservoir() const { 268 return mSize <= sizeof(u.reservoir); 269 } 270 271 void *allocateStorage(size_t size); 272 void freeStorage(); 273 274 void *storage() { 275 return usesReservoir() ? &u.reservoir : u.ext_data; 276 } 277 278 const void *storage() const { 279 return usesReservoir() ? &u.reservoir : u.ext_data; 280 } 281 }; 282 283 struct Rect { 284 int32_t mLeft, mTop, mRight, mBottom; 285 }; 286 287 KeyedVector<uint32_t, typed_data> mItems; 288 289 // MetaData &operator=(const MetaData &); 290 }; 291 292 } // namespace android 293 294 #endif // META_DATA_H_ 295
