mplayer.h

Last change: 2008-02-03 This is the source code of KCeasy。

/*
This file is part of KCeasy (http://www.kceasy.com)
Copyright (C) 2002-2004 Markus Kern <[e-mail]>

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.
*/
//---------------------------------------------------------------------------
#ifndef MPlayerH
#define MPlayerH
//---------------------------------------------------------------------------
#include <Classes.hpp>
#include <Controls.hpp>
#include <extctrls.hpp>

#include "istring.h"
#include "simplevlc.h"
//---------------------------------------------------------------------------
static const UINT WM_SVLC_CALLBACK = WM_USER + 1;
//---------------------------------------------------------------------------

using namespace KCeasyEngine;

typedef enum
{
	MPClosed,
	MPLoading,
	MPOpen,
	MPPlaying,
	MPPaused,
	MPStopped,
    MPError
} TMPlayerState;

typedef enum
{
    MPHalfSize,
    MPDefaultSize,
    MPDoubleSize,
    MPFitToWindow,
    MPFullscreen
} TMPlayerDisplaySize;

typedef void __fastcall (__closure *TMPlayerStateChangeEvent)(TObject* Sender, TMPlayerState NewState);
typedef void __fastcall (__closure *TMPlayerPositionChangeEvent)(TObject* Sender, float Position, int Duration);
typedef void __fastcall (__closure *TMPlayerDisplayPopupEvent)(TObject* Sender, bool Show);

class TMPlayer : public TWinControl
{
friend long FAR PASCAL gDisplayWndProc(HWND hWnd,UINT Msg,WPARAM wParam,LPARAM lParam);
friend void SVLC_CC gSVlcCallbackFunc (HSVLC svlc, SVlcCallbackEvent event, void *edata, void *udata);

__published:
    __property OnKeyPress = {read=FOnKeyPress, write=FOnKeyPress, default=NULL};
    __property TMPlayerStateChangeEvent OnStateChange = {read=FOnStateChange, write=FOnStateChange, default=NULL};
    __property TMPlayerPositionChangeEvent OnPositionChange = {read=FOnPositionChange, write=FOnPositionChange, default=NULL};
    __property TMPlayerDisplayPopupEvent OnDisplayPopup = {read=FOnDisplayPopup, write=FOnDisplayPopup, default=NULL};

public:
    __fastcall virtual TMPlayer(TComponent* Owner);
    __fastcall virtual ~TMPlayer();

    // don't call this before the TMPlayer window is fully created
    bool Initialize(int LogLevel = -1);
    bool Shutdown();
    bool IsInitialized() { return IsVlcLoaded(); }

    // playback
    bool Play(string Filename);
    bool PlayNetwork(string Url);
    bool Stop();
    bool Pause(bool Pause);
    bool TogglePause();
    bool IsPaused() { return (GetState() == MPPaused); }
    TMPlayerState GetState();

    bool IsSeekable();
    bool SetPosition(float Position);
    float GetPosition(); // in [0,1]
    int GetDuration(); // in msec

    bool GetStreamCount(int* Audio, int* Video);
    bool SetVisualization(bool Show);

    // video
    TMPlayerDisplaySize GetDisplaySize();
    bool SetDisplaySize(TMPlayerDisplaySize Size);

    // audio
    bool SetVolume(float Volume);
    float GetVolume(); // in [0,1]
    bool Mute(bool Mute);
    bool IsMuted();
    bool ToggleMute();

protected:
    TMPlayerStateChangeEvent FOnStateChange;
    TMPlayerPositionChangeEvent FOnPositionChange;
    TMPlayerDisplayPopupEvent FOnDisplayPopup;
    TKeyPressEvent FOnKeyPress;

    HINSTANCE hVlcDll;
    SVlcInterface *VlcIntf;
    HSVLC hVlc;
    HWND DisplayWnd;

    bool LoadVlc(int LogLevel = -1);
    bool UnloadVlc();
    bool IsVlcLoaded();

    void __fastcall WMSVlcCallback(TMessage& Msg);

    bool CreateDisplayWnd();
    bool DestroyDisplayWnd();
    long FAR PASCAL DisplayWndProc(HWND hWnd,UINT Msg,WPARAM wParam,LPARAM lParam);

    TMPlayerState ConvertVlcState(SVlcPlaybackState VlcState);

    DYNAMIC void __fastcall Resize(void);
    virtual void __fastcall CreateParams(TCreateParams &Params);

BEGIN_MESSAGE_MAP
  VCL_MESSAGE_HANDLER(WM_SVLC_CALLBACK, TMessage, WMSVlcCallback)
END_MESSAGE_MAP(TWinControl)
};

#endif // MPlayerH