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Diffstat (limited to 'include/media/stagefright/MetaData.h')
| -rw-r--r-- | include/media/stagefright/MetaData.h | 244 |
1 files changed, 244 insertions, 0 deletions
diff --git a/include/media/stagefright/MetaData.h b/include/media/stagefright/MetaData.h new file mode 100644 index 0000000..639446e --- /dev/null +++ b/include/media/stagefright/MetaData.h @@ -0,0 +1,244 @@ +/* + * Copyright (C) 2009 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef META_DATA_H_ + +#define META_DATA_H_ + +#include <sys/types.h> + +#include <stdint.h> + +#include <utils/RefBase.h> +#include <utils/KeyedVector.h> +#include <utils/String8.h> + +namespace android { + +// The following keys map to int32_t data unless indicated otherwise. +enum { + kKeyMIMEType = 'mime', // cstring + kKeyWidth = 'widt', // int32_t, image pixel + kKeyHeight = 'heig', // int32_t, image pixel + kKeyDisplayWidth = 'dWid', // int32_t, display/presentation + kKeyDisplayHeight = 'dHgt', // int32_t, display/presentation + + // a rectangle, if absent assumed to be (0, 0, width - 1, height - 1) + kKeyCropRect = 'crop', + + kKeyRotation = 'rotA', // int32_t (angle in degrees) + kKeyIFramesInterval = 'ifiv', // int32_t + kKeyStride = 'strd', // int32_t + kKeySliceHeight = 'slht', // int32_t + kKeyChannelCount = '#chn', // int32_t + kKeyChannelMask = 'chnm', // int32_t + kKeySampleRate = 'srte', // int32_t (audio sampling rate Hz) + kKeyFrameRate = 'frmR', // int32_t (video frame rate fps) + kKeyBitRate = 'brte', // int32_t (bps) + kKeyESDS = 'esds', // raw data + kKeyAVCC = 'avcc', // raw data + kKeyD263 = 'd263', // raw data + kKeyVorbisInfo = 'vinf', // raw data + kKeyVorbisBooks = 'vboo', // raw data + kKeyWantsNALFragments = 'NALf', + kKeyIsSyncFrame = 'sync', // int32_t (bool) + kKeyIsCodecConfig = 'conf', // int32_t (bool) + kKeyTime = 'time', // int64_t (usecs) + kKeyDecodingTime = 'decT', // int64_t (decoding timestamp in usecs) + kKeyNTPTime = 'ntpT', // uint64_t (ntp-timestamp) + kKeyTargetTime = 'tarT', // int64_t (usecs) + kKeyDriftTime = 'dftT', // int64_t (usecs) + kKeyAnchorTime = 'ancT', // int64_t (usecs) + kKeyDuration = 'dura', // int64_t (usecs) + kKeyColorFormat = 'colf', + kKeyPlatformPrivate = 'priv', // pointer + kKeyDecoderComponent = 'decC', // cstring + kKeyBufferID = 'bfID', + kKeyMaxInputSize = 'inpS', + kKeyThumbnailTime = 'thbT', // int64_t (usecs) + kKeyTrackID = 'trID', + kKeyIsDRM = 'idrm', // int32_t (bool) + kKeyEncoderDelay = 'encd', // int32_t (frames) + kKeyEncoderPadding = 'encp', // int32_t (frames) + + kKeyAlbum = 'albu', // cstring + kKeyArtist = 'arti', // cstring + kKeyAlbumArtist = 'aart', // cstring + kKeyComposer = 'comp', // cstring + kKeyGenre = 'genr', // cstring + kKeyTitle = 'titl', // cstring + kKeyYear = 'year', // cstring + kKeyAlbumArt = 'albA', // compressed image data + kKeyAlbumArtMIME = 'alAM', // cstring + kKeyAuthor = 'auth', // cstring + kKeyCDTrackNumber = 'cdtr', // cstring + kKeyDiscNumber = 'dnum', // cstring + kKeyDate = 'date', // cstring + kKeyWriter = 'writ', // cstring + kKeyCompilation = 'cpil', // cstring + kKeyLocation = 'loc ', // cstring + kKeyTimeScale = 'tmsl', // int32_t + + // video profile and level + kKeyVideoProfile = 'vprf', // int32_t + kKeyVideoLevel = 'vlev', // int32_t + + // Set this key to enable authoring files in 64-bit offset + kKey64BitFileOffset = 'fobt', // int32_t (bool) + kKey2ByteNalLength = '2NAL', // int32_t (bool) + + // Identify the file output format for authoring + // Please see <media/mediarecorder.h> for the supported + // file output formats. + kKeyFileType = 'ftyp', // int32_t + + // Track authoring progress status + // kKeyTrackTimeStatus is used to track progress in elapsed time + kKeyTrackTimeStatus = 'tktm', // int64_t + + kKeyNotRealTime = 'ntrt', // bool (int32_t) + + // Ogg files can be tagged to be automatically looping... + kKeyAutoLoop = 'autL', // bool (int32_t) + + kKeyValidSamples = 'valD', // int32_t + + kKeyIsUnreadable = 'unre', // bool (int32_t) + + // An indication that a video buffer has been rendered. + kKeyRendered = 'rend', // bool (int32_t) + + // The language code for this media + kKeyMediaLanguage = 'lang', // cstring + + // To store the timed text format data + kKeyTextFormatData = 'text', // raw data + + kKeyRequiresSecureBuffers = 'secu', // bool (int32_t) + + kKeyScrambling = 'scrm', // int32_t + kKeyEMM = 'emm ', // raw data + kKeyECM = 'ecm ', // raw data + + kKeyIsADTS = 'adts', // bool (int32_t) +}; + +enum { + kTypeESDS = 'esds', + kTypeAVCC = 'avcc', + kTypeD263 = 'd263', +}; + +class MetaData : public RefBase { +public: + MetaData(); + MetaData(const MetaData &from); + + enum Type { + TYPE_NONE = 'none', + TYPE_C_STRING = 'cstr', + TYPE_INT32 = 'in32', + TYPE_INT64 = 'in64', + TYPE_FLOAT = 'floa', + TYPE_POINTER = 'ptr ', + TYPE_RECT = 'rect', + }; + + void clear(); + bool remove(uint32_t key); + + bool setCString(uint32_t key, const char *value); + bool setInt32(uint32_t key, int32_t value); + bool setInt64(uint32_t key, int64_t value); + bool setFloat(uint32_t key, float value); + bool setPointer(uint32_t key, void *value); + + bool setRect( + uint32_t key, + int32_t left, int32_t top, + int32_t right, int32_t bottom); + + bool findCString(uint32_t key, const char **value); + bool findInt32(uint32_t key, int32_t *value); + bool findInt64(uint32_t key, int64_t *value); + bool findFloat(uint32_t key, float *value); + bool findPointer(uint32_t key, void **value); + + bool findRect( + uint32_t key, + int32_t *left, int32_t *top, + int32_t *right, int32_t *bottom); + + bool setData(uint32_t key, uint32_t type, const void *data, size_t size); + + bool findData(uint32_t key, uint32_t *type, + const void **data, size_t *size) const; + + void dumpToLog() const; + +protected: + virtual ~MetaData(); + +private: + struct typed_data { + typed_data(); + ~typed_data(); + + typed_data(const MetaData::typed_data &); + typed_data &operator=(const MetaData::typed_data &); + + void clear(); + void setData(uint32_t type, const void *data, size_t size); + void getData(uint32_t *type, const void **data, size_t *size) const; + String8 asString() const; + + private: + uint32_t mType; + size_t mSize; + + union { + void *ext_data; + float reservoir; + } u; + + bool usesReservoir() const { + return mSize <= sizeof(u.reservoir); + } + + void allocateStorage(size_t size); + void freeStorage(); + + void *storage() { + return usesReservoir() ? &u.reservoir : u.ext_data; + } + + const void *storage() const { + return usesReservoir() ? &u.reservoir : u.ext_data; + } + }; + + struct Rect { + int32_t mLeft, mTop, mRight, mBottom; + }; + + KeyedVector<uint32_t, typed_data> mItems; + + // MetaData &operator=(const MetaData &); +}; + +} // namespace android + +#endif // META_DATA_H_ |