videodecodervfw.h

VC++视频开发实例集锦(包括“远程视频监控”"语音识别系统"等13个经典例子)

/**************************************************************************************
 *                                                                                    *
 *                                                                                    *
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#ifndef VIDEODECODER_VFW_H
#define VIDEODECODER_VFW_H

/*
 * 基类
 */

#include "MediaClasses.h"
#include <vfw.h>

#define VFW_INPUT_SIZE 128000

typedef struct _my_BITMAPINFO {

	BITMAPINFOHEADER bmiHeader;
	DWORD            bmiColors[3];

} my_BITMAPINFO;

/*
 * 视频解码器类
 */

class MediaVideoDecoderVFW : public MediaItemVideoDecoder {

private:

	HIC                hic;
	BITMAPINFO         in_bih;
	my_BITMAPINFO      out_bih;

	media_video_mode_t videoMode;
	BOOL               invertFlag;

	MediaItemDecaps   *decaps;
	MediaBuffer       *inputBuffer;

public:

	MediaVideoDecoderVFW();
	~MediaVideoDecoderVFW();

	/*
	 * 媒体项方法
	 */

	media_type_t  GetType();
	char         *GetName();

	MP_RESULT     Connect(MediaItem *item);
	MP_RESULT     ReleaseConnections();

	DWORD         GetCaps();
	MP_RESULT     Configure(HINSTANCE hInstance, HWND hwnd);

	/*
	 * 视频解码器方法
	 *
	 */

	unsigned int       GetFrameSize();

	media_video_mode_t GetVideoMode();
	BOOL               GetInvertFlag();
	MP_RESULT          SetVideoMode(media_video_mode_t mode);

	MP_RESULT          SetQuality(DWORD quality);
	DWORD              GetQuality();

	MP_RESULT          Decompress(MediaBuffer *mb_out, unsigned int stride);
	MP_RESULT          Drop(MediaBuffer *mb_out, unsigned int stride);

};


#endif