| /* |
| * 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> |
| |
| namespace android { |
| |
| // The following keys map to int32_t data unless indicated otherwise. |
| enum { |
| kKeyMIMEType = 'mime', // cstring |
| kKeyWidth = 'widt', |
| kKeyHeight = 'heig', |
| kKeyChannelCount = '#chn', |
| kKeySampleRate = 'srte', |
| kKeyBitRate = 'brte', |
| kKeyESDS = 'esds', // raw data |
| kKeyAVCC = 'avcc', // raw data |
| kKeyWantsNALFragments = 'NALf', |
| kKeyIsSyncFrame = 'sync', |
| kKeyTime = 'time', // 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) |
| }; |
| |
| enum { |
| kTypeESDS = 'esds', |
| kTypeAVCC = 'avcc', |
| }; |
| |
| 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 ', |
| }; |
| |
| 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 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 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; |
| |
| 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; |
| |
| 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; |
| } |
| }; |
| |
| KeyedVector<uint32_t, typed_data> mItems; |
| |
| // MetaData &operator=(const MetaData &); |
| }; |
| |
| } // namespace android |
| |
| #endif // META_DATA_H_ |