mediaplayback.h

<VC++视频音频开发>一书的光盘资料。

/**************************************************************************************
 *                                                                                    *
 *                                                                                    *
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#ifndef MEDIA_PLAYBACK_H
#define MEDIA_PLAYBACK_H

#include <windows.h>

#include "Input.h"
#include "Decaps.h"
#include "MediaBuffer.h"
#include "VideoDecoder.h"
#include "VideoBuffer.h"
#include "VideoRenderer.h"
#include "AudioDecoder.h"
#include "AudioRenderer.h"
#include "MediaClasses.h"
#include "Subtitles.h"

#define  WM_PLAYA_PLAYBACK_END (WM_USER + 2)

/*
 * Playback Class 
 * --------------
 * 
 *  ——为所有媒体类中的项和过滤器提供一个前端处理
 * 
 */

class MediaPlayback {

public:

	MediaInput         *input;
	MediaDecaps        *decaps;
	MediaVideoDecoder  *videoDecoder;
	MediaVideoBuffer   *videoBuffer;
	MediaVideoRenderer *videoRenderer;
	MediaAudioDecoder  *audioDecoder;
	MediaAudioRenderer *audioRenderer;
	MediaSubtitler     *subtitler;

	HWND                hwndPlayback;
	RECT               *videoRect;

	BOOL                hasVideo;
	BOOL                hasAudio;
	BOOL                hasSubtitles;

	BOOL                playing;
	BOOL                paused;
	BOOL                rewind;
	BOOL                fastForward;
	BOOL                fullscreen;
	BOOL                desktopMode;

	BOOL                end;
	BOOL                buffering;
	BOOL                hasToBuffer;
	DWORD               bufferingProgress;

	DWORD               loop;
	DWORD               baseTime;
	DWORD               stopTime;
	DWORD               volume;

	HANDLE              playbackMutex;
	HANDLE              videoThread;
	DWORD               videoThreadId;

	DWORD               videoFrames;
	DWORD               audioBytes;

	char                filename[512];



	MediaPlayback();
	~MediaPlayback();

	MP_RESULT     OpenMedia(char *lpFilename, HWND hwndPlayback);

	MP_RESULT     OpenMediaSource(char *lpFilename);
	MP_RESULT     OpenMediaFromSource(HWND hwnd);

	BOOL          HasVideo();
	BOOL          HasAudio();

	char         *GetFilename();

	unsigned int  GetVideoWidth();
	unsigned int  GetVideoHeight();
	unsigned long GetVideoTime();
	unsigned long GetAudioTime();
	double        GetPlaybackProgress();
	unsigned int  GetActualTime();
	unsigned int  GetTotalTime();
	double        GetCurrentFps();

	BOOL          IsPaused();
	BOOL          IsPlaying();
	BOOL          IsInFullscreen();
	BOOL          IsOverlay();

	BOOL          IsBuffering();
	DWORD         GetBufferingProgress();
	MP_RESULT     UpdateBuffering();

	MP_RESULT     FlipToGDI();

	MP_RESULT     Play();
	MP_RESULT     Pause();
	MP_RESULT     NextFrame();
	MP_RESULT     Stop(int redrawWindow);
	MP_RESULT     Close();
	MP_RESULT     FastForward();
	MP_RESULT     Rewind();

	MP_RESULT     Seek(int percent);
	MP_RESULT     MaintainImage();

	MP_RESULT     SetDesktopMode(BOOL on);
	MP_RESULT     SetVideoRect(RECT *rect);
	MP_RESULT     SetFullscreen(int active, HWND hwnd);
	MP_RESULT     SetVolume(int volume);
	MP_RESULT     SetLoop(int loop);
};

#endif