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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*
*/
/**
* Internal interface to the QuickTime audio decoder.
*
* This is available so that the QuickTimeVideoDecoder can use
* this directly.
*/
#ifndef AUDIO_QUICKTIME_INTERN_H
#define AUDIO_QUICKTIME_INTERN_H
#include "common/quicktime.h"
#include "common/scummsys.h"
#include "common/types.h"
namespace Common {
class SeekableReadStream;
class String;
}
namespace Audio {
class AudioStream;
class QueuingAudioStream;
class QuickTimeAudioDecoder : public Common::QuickTimeParser {
public:
QuickTimeAudioDecoder();
virtual ~QuickTimeAudioDecoder();
/**
* Load a QuickTime audio file
* @param filename the filename to load
*/
bool loadAudioFile(const Common::String &filename);
/**
* Load a QuickTime audio file from a SeekableReadStream
* @param stream the stream to load
*/
bool loadAudioStream(Common::SeekableReadStream *stream, DisposeAfterUse::Flag disposeFileHandle);
protected:
class AudioSampleDesc : public Common::QuickTimeParser::SampleDesc {
public:
AudioSampleDesc(Common::QuickTimeParser::Track *parentTrack, uint32 codecTag);
bool isAudioCodecSupported() const;
uint32 getAudioChunkSampleCount(uint chunk) const;
AudioStream *createAudioStream(Common::SeekableReadStream *stream) const;
// TODO: Make private in the long run
uint16 _bitsPerSample;
uint16 _channels;
uint32 _sampleRate;
uint32 _samplesPerFrame;
uint32 _bytesPerFrame;
};
// Common::QuickTimeParser API
virtual Common::QuickTimeParser::SampleDesc *readSampleDesc(Track *track, uint32 format);
void init();
void setAudioStreamPos(const Timestamp &where);
bool isOldDemuxing() const;
void queueNextAudioChunk();
int _audioTrackIndex;
uint _curAudioChunk;
QueuingAudioStream *_audStream;
};
} // End of namespace Audio
#endif
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