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 28 namespace android { 29 30 // The following keys map to int32_t data unless indicated otherwise. 31 enum { 32 kKeyMIMEType = 'mime', // cstring 33 kKeyWidth = 'widt', // int32_t, image pixel 34 kKeyHeight = 'heig', // int32_t, image pixel 35 kKeyDisplayWidth = 'dWid', // int32_t, display/presentation 36 kKeyDisplayHeight = 'dHgt', // int32_t, display/presentation 37 38 // a rectangle, if absent assumed to be (0, 0, width - 1, height - 1) 39 kKeyCropRect = 'crop', 40 41 kKeyRotation = 'rotA', // int32_t (angle in degrees) 42 kKeyIFramesInterval = 'ifiv', // int32_t 43 kKeyStride = 'strd', // int32_t 44 kKeySliceHeight = 'slht', // int32_t 45 kKeyChannelCount = '#chn', // int32_t 46 kKeySampleRate = 'srte', // int32_t (audio sampling rate Hz) 47 kKeyFrameRate = 'frmR', // int32_t (video frame rate fps) 48 kKeyBitRate = 'brte', // int32_t (bps) 49 kKeyESDS = 'esds', // raw data 50 kKeyAVCC = 'avcc', // raw data 51 kKeyD263 = 'd263', // raw data 52 kKeyVorbisInfo = 'vinf', // raw data 53 kKeyVorbisBooks = 'vboo', // raw data 54 kKeyWantsNALFragments = 'NALf', 55 kKeyIsSyncFrame = 'sync', // int32_t (bool) 56 kKeyIsCodecConfig = 'conf', // int32_t (bool) 57 kKeyTime = 'time', // int64_t (usecs) 58 kKeyDecodingTime = 'decT', // int64_t (decoding timestamp in usecs) 59 kKeyNTPTime = 'ntpT', // uint64_t (ntp-timestamp) 60 kKeyTargetTime = 'tarT', // int64_t (usecs) 61 kKeyDriftTime = 'dftT', // int64_t (usecs) 62 kKeyAnchorTime = 'ancT', // int64_t (usecs) 63 kKeyDuration = 'dura', // int64_t (usecs) 64 kKeyColorFormat = 'colf', 65 kKeyPlatformPrivate = 'priv', // pointer 66 kKeyDecoderComponent = 'decC', // cstring 67 kKeyBufferID = 'bfID', 68 kKeyMaxInputSize = 'inpS', 69 kKeyThumbnailTime = 'thbT', // int64_t (usecs) 70 kKeyTrackID = 'trID', 71 kKeyIsDRM = 'idrm', // int32_t (bool) 72 73 kKeyAlbum = 'albu', // cstring 74 kKeyArtist = 'arti', // cstring 75 kKeyAlbumArtist = 'aart', // cstring 76 kKeyComposer = 'comp', // cstring 77 kKeyGenre = 'genr', // cstring 78 kKeyTitle = 'titl', // cstring 79 kKeyYear = 'year', // cstring 80 kKeyAlbumArt = 'albA', // compressed image data 81 kKeyAlbumArtMIME = 'alAM', // cstring 82 kKeyAuthor = 'auth', // cstring 83 kKeyCDTrackNumber = 'cdtr', // cstring 84 kKeyDiscNumber = 'dnum', // cstring 85 kKeyDate = 'date', // cstring 86 kKeyWriter = 'writ', // cstring 87 kKeyCompilation = 'cpil', // cstring 88 kKeyLocation = 'loc ', // cstring 89 kKeyTimeScale = 'tmsl', // int32_t 90 91 // video profile and level 92 kKeyVideoProfile = 'vprf', // int32_t 93 kKeyVideoLevel = 'vlev', // int32_t 94 95 // Set this key to enable authoring files in 64-bit offset 96 kKey64BitFileOffset = 'fobt', // int32_t (bool) 97 kKey2ByteNalLength = '2NAL', // int32_t (bool) 98 99 // Identify the file output format for authoring 100 // Please see <media/mediarecorder.h> for the supported 101 // file output formats. 102 kKeyFileType = 'ftyp', // int32_t 103 104 // Track authoring progress status 105 // kKeyTrackTimeStatus is used to track progress in elapsed time 106 kKeyTrackTimeStatus = 'tktm', // int64_t 107 108 kKeyNotRealTime = 'ntrt', // bool (int32_t) 109 110 // Ogg files can be tagged to be automatically looping... 111 kKeyAutoLoop = 'autL', // bool (int32_t) 112 113 kKeyValidSamples = 'valD', // int32_t 114 115 kKeyIsUnreadable = 'unre', // bool (int32_t) 116 117 // An indication that a video buffer has been rendered. 118 kKeyRendered = 'rend', // bool (int32_t) 119 120 // The language code for this media 121 kKeyMediaLanguage = 'lang', // cstring 122 123 // To store the timed text format data 124 kKeyTextFormatData = 'text', // raw data 125 126 kKeyRequiresSecureBuffers = 'secu', // bool (int32_t) 127 }; 128 129 enum { 130 kTypeESDS = 'esds', 131 kTypeAVCC = 'avcc', 132 kTypeD263 = 'd263', 133 }; 134 135 class MetaData : public RefBase { 136 public: 137 MetaData(); 138 MetaData(const MetaData &from); 139 140 enum Type { 141 TYPE_NONE = 'none', 142 TYPE_C_STRING = 'cstr', 143 TYPE_INT32 = 'in32', 144 TYPE_INT64 = 'in64', 145 TYPE_FLOAT = 'floa', 146 TYPE_POINTER = 'ptr ', 147 TYPE_RECT = 'rect', 148 }; 149 150 void clear(); 151 bool remove(uint32_t key); 152 153 bool setCString(uint32_t key, const char *value); 154 bool setInt32(uint32_t key, int32_t value); 155 bool setInt64(uint32_t key, int64_t value); 156 bool setFloat(uint32_t key, float value); 157 bool setPointer(uint32_t key, void *value); 158 159 bool setRect( 160 uint32_t key, 161 int32_t left, int32_t top, 162 int32_t right, int32_t bottom); 163 164 bool findCString(uint32_t key, const char **value); 165 bool findInt32(uint32_t key, int32_t *value); 166 bool findInt64(uint32_t key, int64_t *value); 167 bool findFloat(uint32_t key, float *value); 168 bool findPointer(uint32_t key, void **value); 169 170 bool findRect( 171 uint32_t key, 172 int32_t *left, int32_t *top, 173 int32_t *right, int32_t *bottom); 174 175 bool setData(uint32_t key, uint32_t type, const void *data, size_t size); 176 177 bool findData(uint32_t key, uint32_t *type, 178 const void **data, size_t *size) const; 179 180 protected: 181 virtual ~MetaData(); 182 183 private: 184 struct typed_data { 185 typed_data(); 186 ~typed_data(); 187 188 typed_data(const MetaData::typed_data &); 189 typed_data &operator=(const MetaData::typed_data &); 190 191 void clear(); 192 void setData(uint32_t type, const void *data, size_t size); 193 void getData(uint32_t *type, const void **data, size_t *size) const; 194 195 private: 196 uint32_t mType; 197 size_t mSize; 198 199 union { 200 void *ext_data; 201 float reservoir; 202 } u; 203 204 bool usesReservoir() const { 205 return mSize <= sizeof(u.reservoir); 206 } 207 208 void allocateStorage(size_t size); 209 void freeStorage(); 210 211 void *storage() { 212 return usesReservoir() ? &u.reservoir : u.ext_data; 213 } 214 215 const void *storage() const { 216 return usesReservoir() ? &u.reservoir : u.ext_data; 217 } 218 }; 219 220 struct Rect { 221 int32_t mLeft, mTop, mRight, mBottom; 222 }; 223 224 KeyedVector<uint32_t, typed_data> mItems; 225 226 // MetaData &operator=(const MetaData &); 227 }; 228 229 } // namespace android 230 231 #endif // META_DATA_H_ 232
