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 34 kKeyHeight = 'heig', // int32_t 35 kKeyRotation = 'rotA', // int32_t (angle in degrees) 36 kKeyIFramesInterval = 'ifiv', // int32_t 37 kKeyStride = 'strd', // int32_t 38 kKeySliceHeight = 'slht', // int32_t 39 kKeyChannelCount = '#chn', // int32_t 40 kKeySampleRate = 'srte', // int32_t (also video frame rate) 41 kKeyBitRate = 'brte', // int32_t (bps) 42 kKeyESDS = 'esds', // raw data 43 kKeyAVCC = 'avcc', // raw data 44 kKeyVorbisInfo = 'vinf', // raw data 45 kKeyVorbisBooks = 'vboo', // raw data 46 kKeyWantsNALFragments = 'NALf', 47 kKeyIsSyncFrame = 'sync', // int32_t (bool) 48 kKeyIsCodecConfig = 'conf', // int32_t (bool) 49 kKeyTime = 'time', // int64_t (usecs) 50 kKeyNTPTime = 'ntpT', // uint64_t (ntp-timestamp) 51 kKeyTargetTime = 'tarT', // int64_t (usecs) 52 kKeyDriftTime = 'dftT', // int64_t (usecs) 53 kKeyAnchorTime = 'ancT', // int64_t (usecs) 54 kKeyDuration = 'dura', // int64_t (usecs) 55 kKeyColorFormat = 'colf', 56 kKeyPlatformPrivate = 'priv', // pointer 57 kKeyDecoderComponent = 'decC', // cstring 58 kKeyBufferID = 'bfID', 59 kKeyMaxInputSize = 'inpS', 60 kKeyThumbnailTime = 'thbT', // int64_t (usecs) 61 62 kKeyAlbum = 'albu', // cstring 63 kKeyArtist = 'arti', // cstring 64 kKeyAlbumArtist = 'aart', // cstring 65 kKeyComposer = 'comp', // cstring 66 kKeyGenre = 'genr', // cstring 67 kKeyTitle = 'titl', // cstring 68 kKeyYear = 'year', // cstring 69 kKeyAlbumArt = 'albA', // compressed image data 70 kKeyAlbumArtMIME = 'alAM', // cstring 71 kKeyAuthor = 'auth', // cstring 72 kKeyCDTrackNumber = 'cdtr', // cstring 73 kKeyDiscNumber = 'dnum', // cstring 74 kKeyDate = 'date', // cstring 75 kKeyWriter = 'writ', // cstring 76 kKeyTimeScale = 'tmsl', // int32_t 77 78 // video profile and level 79 kKeyVideoProfile = 'vprf', // int32_t 80 kKeyVideoLevel = 'vlev', // int32_t 81 82 // Set this key to enable authoring files in 64-bit offset 83 kKey64BitFileOffset = 'fobt', // int32_t (bool) 84 kKey2ByteNalLength = '2NAL', // int32_t (bool) 85 86 // Identify the file output format for authoring 87 // Please see <media/mediarecorder.h> for the supported 88 // file output formats. 89 kKeyFileType = 'ftyp', // int32_t 90 91 // Track authoring progress status 92 // kKeyTrackTimeStatus is used to track progress in elapsed time 93 kKeyTrackTimeStatus = 'tktm', // int64_t 94 kKeyRotationDegree = 'rdge', // int32_t (clockwise, in degree) 95 96 kKeyNotRealTime = 'ntrt', // bool (int32_t) 97 98 // Ogg files can be tagged to be automatically looping... 99 kKeyAutoLoop = 'autL', // bool (int32_t) 100 101 kKeyValidSamples = 'valD', // int32_t 102 103 kKeyIsUnreadable = 'unre', // bool (int32_t) 104 }; 105 106 enum { 107 kTypeESDS = 'esds', 108 kTypeAVCC = 'avcc', 109 }; 110 111 class MetaData : public RefBase { 112 public: 113 MetaData(); 114 MetaData(const MetaData &from); 115 116 enum Type { 117 TYPE_NONE = 'none', 118 TYPE_C_STRING = 'cstr', 119 TYPE_INT32 = 'in32', 120 TYPE_INT64 = 'in64', 121 TYPE_FLOAT = 'floa', 122 TYPE_POINTER = 'ptr ', 123 }; 124 125 void clear(); 126 bool remove(uint32_t key); 127 128 bool setCString(uint32_t key, const char *value); 129 bool setInt32(uint32_t key, int32_t value); 130 bool setInt64(uint32_t key, int64_t value); 131 bool setFloat(uint32_t key, float value); 132 bool setPointer(uint32_t key, void *value); 133 134 bool findCString(uint32_t key, const char **value); 135 bool findInt32(uint32_t key, int32_t *value); 136 bool findInt64(uint32_t key, int64_t *value); 137 bool findFloat(uint32_t key, float *value); 138 bool findPointer(uint32_t key, void **value); 139 140 bool setData(uint32_t key, uint32_t type, const void *data, size_t size); 141 142 bool findData(uint32_t key, uint32_t *type, 143 const void **data, size_t *size) const; 144 145 protected: 146 virtual ~MetaData(); 147 148 private: 149 struct typed_data { 150 typed_data(); 151 ~typed_data(); 152 153 typed_data(const MetaData::typed_data &); 154 typed_data &operator=(const MetaData::typed_data &); 155 156 void clear(); 157 void setData(uint32_t type, const void *data, size_t size); 158 void getData(uint32_t *type, const void **data, size_t *size) const; 159 160 private: 161 uint32_t mType; 162 size_t mSize; 163 164 union { 165 void *ext_data; 166 float reservoir; 167 } u; 168 169 bool usesReservoir() const { 170 return mSize <= sizeof(u.reservoir); 171 } 172 173 void allocateStorage(size_t size); 174 void freeStorage(); 175 176 void *storage() { 177 return usesReservoir() ? &u.reservoir : u.ext_data; 178 } 179 180 const void *storage() const { 181 return usesReservoir() ? &u.reservoir : u.ext_data; 182 } 183 }; 184 185 KeyedVector<uint32_t, typed_data> mItems; 186 187 // MetaData &operator=(const MetaData &); 188 }; 189 190 } // namespace android 191 192 #endif // META_DATA_H_ 193
