mp3reader.h
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/*
* Copyright (C) 2014 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef MP3READER_H_
#define MP3READER_H_
typedef struct {
size_t (*read) (void *ptr, size_t size, size_t nmemb, void *datasource);
int (*seek) (void *datasource, int64_t offset, int whence);
int (*close) (void *datasource);
long (*tell) (void *datasource);
} mp3_callbacks;
class Mp3Reader {
public:
Mp3Reader();
bool init(mp3_callbacks *callback, void* source);
bool getFrame(void *buffer, uint32_t *size);
uint32_t getSampleRate() { return mSampleRate;}
uint32_t getNumChannels() { return mNumChannels;}
void close();
~Mp3Reader();
private:
void *mSource;
mp3_callbacks* mCallback;
uint32_t mFixedHeader;
off64_t mCurrentPos;
uint32_t mSampleRate;
uint32_t mNumChannels;
uint32_t mBitrate;
};
int decodeMP3(mp3_callbacks* cb, void* source, std::vector<char>& pcmBuffer, int* numChannels, int* sampleRate, int* numFrames);
#endif /* MP3READER_H_ */