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/*
* 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
kKeyAACProfile = 'aacp', // int32_t
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)
kKeyNumBuffers = 'nbbf', // 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)
kKeyIsADTS = 'adts', // bool (int32_t)
// If a MediaBuffer's data represents (at least partially) encrypted
// data, the following fields aid in decryption.
// The data can be thought of as pairs of plain and encrypted data
// fragments, i.e. plain and encrypted data alternate.
// The first fragment is by convention plain data (if that's not the
// case, simply specify plain fragment size of 0).
// kKeyEncryptedSizes and kKeyPlainSizes each map to an array of
// size_t values. The sum total of all size_t values of both arrays
// must equal the amount of data (i.e. MediaBuffer's range_length()).
// If both arrays are present, they must be of the same size.
// If only encrypted sizes are present it is assumed that all
// plain sizes are 0, i.e. all fragments are encrypted.
// To programmatically set these array, use the MetaData::setData API, i.e.
// const size_t encSizes[];
// meta->setData(
// kKeyEncryptedSizes, 0 /* type */, encSizes, sizeof(encSizes));
// A plain sizes array by itself makes no sense.
kKeyEncryptedSizes = 'encr', // size_t[]
kKeyPlainSizes = 'plai', // size_t[]
kKeyCryptoKey = 'cryK', // uint8_t[16]
kKeyCryptoIV = 'cryI', // uint8_t[16]
kKeyCryptoMode = 'cryM', // 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_
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