audiodecoder.h

《Visual C++视频/音频开发实用工程案例精选》一书的源代码

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#ifndef AUDIO_DECODER_H
#define AUDIO_DECODER_H

#include "AudioDecoderMP3.h"
#include "AudioDecoderACM.h"
#include "MediaClasses.h"

/*
 * 声音解码封装类
 */
class MediaAudioDecoder : public MediaItemAudioDecoder {

private:

	MediaAudioDecoderACM  *acmDecoder;
	MediaAudioDecoderMP3  *mp3Decoder;
	MediaItemAudioDecoder *decoder;

public:

	MediaAudioDecoder();
	~MediaAudioDecoder();

	/*
	 * 媒体项函数
	 */
	media_type_t  GetType();
	char         *GetName();
	
	MP_RESULT     Connect(MediaItem *item);
	MP_RESULT     ReleaseConnections();
	
	DWORD         GetCaps();
	MP_RESULT     Configure(HINSTANCE hInstance, HWND hwnd);

	/*
	 * 声音解码器
	 */
	WAVEFORMATEX *GetAudioFormat();
	MP_RESULT     EmptyAudioBuffer();

	unsigned int Decompress(void *buffer, unsigned int size);

};

#endif