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97 lines
2.6 KiB
C++
97 lines
2.6 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* $URL$
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* $Id$
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*
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*/
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#ifndef AUDIO_QUICKTIME_H
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#define AUDIO_QUICKTIME_H
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#include "common/quicktime.h"
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#include "common/scummsys.h"
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#include "common/types.h"
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namespace Common {
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class SeekableReadStream;
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class String;
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}
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namespace Audio {
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class AudioStream;
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class RewindableAudioStream;
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class QueuingAudioStream;
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class QuickTimeAudioDecoder : public Common::QuickTimeParser {
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public:
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QuickTimeAudioDecoder();
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virtual ~QuickTimeAudioDecoder();
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/**
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* Load a QuickTime audio file
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* @param filename the filename to load
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*/
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bool loadFile(const Common::String &filename);
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/**
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* Load a QuickTime audio file from a SeekableReadStream
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* @param stream the stream to load
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*/
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bool loadStream(Common::SeekableReadStream *stream);
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protected:
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struct AudioSampleDesc : public Common::QuickTimeParser::SampleDesc {
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AudioSampleDesc();
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uint16 channels;
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uint32 sampleRate;
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uint32 samplesPerFrame;
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uint32 bytesPerFrame;
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};
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// Common::QuickTimeParser API
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virtual Common::QuickTimeParser::SampleDesc *readSampleDesc(MOVStreamContext *st, uint32 format);
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AudioStream *createAudioStream(Common::SeekableReadStream *stream);
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bool checkAudioCodecSupport(uint32 tag);
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void init();
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void queueNextAudioChunk();
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uint32 getAudioChunkSampleCount(uint chunk);
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int8 _audioStreamIndex;
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uint _curAudioChunk;
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QueuingAudioStream *_audStream;
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};
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/**
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* Try to load a QuickTime sound file from the given file name and create a RewindableAudioStream
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* from that data.
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*
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* @param filename the filename of the file from which to read the data
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* @return a new RewindableAudioStream, or NULL, if an error occurred
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*/
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RewindableAudioStream *makeQuickTimeStream(const Common::String &filename);
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} // End of namespace Audio
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#endif
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