zz--WINCE TCPMP应用四:利用TCPMP插件开发程序

2009-06-12 16:48

首先,我们需要把common.lib添加到VS2005/项目属性/链接器/输入项中,同时把common.dll和common.lib放到项目文件夹中,TCPMP中的COMMON文件夹放到上一层文件夹。

其次,在程序中对插件进行初始化和构建播放器节点的操作。具体如下:

//Context init

Context_Init((tchar_t*)T("TCPMP"),(tchar_t*)T("0.72SRC"),3,(tchar_t*)lpCmdLine,NULL);

//上下文创建

context* p=Context();

 

//播放模块的初始化

myplayer=NULL;

if(p) myplayer=(player*)(p->Player);

//播放窗口关联

Context_Wnd(g_hWnd);

 

//错误处理函数设定

p->Error.This=myplayer;

p->Error.Func=DoError;

 

//视频 音频的类节点

array VOutput;

array AOutput;

NodeEnumClass(&VOutput,VOUT_CLASS);

NodeEnumClass(&AOutput,AOUT_CLASS);

如需要EQ可以如下设定:

//EQ 节点

Eq=NodeEnumObject(NULL,EQUALIZER_ID);

有了播放节点myplayer,我们就可以对播放进行控制相关的操作了。以下列举常用操作;

1.播放和暂停

(myplayer->Get(myplayer,PLAYER_PLAY,&State,sizeof(State))==ERR_NONE)

{

State = !State; myplayer->Set(myplayer,PLAYER_PLAY,&State,sizeof(State));

}

 

2.停止

myplayer->Set(myplayer,PLAYER_STOP,NULL,0);

f.Num = 0;

f.Den = 1;

myplayer->Set(myplayer,PLAYER_PERCENT,&f,sizeof(f));

 

3.下曲 上曲

myplayer->Set(myplayer,PLAYER_NEXT,NULL,0); myplayer->Set(myplayer,PLAYER_PREV,NULL,0);

4.静音与否

if (myplayer->Get(myplayer,PLAYER_MUTE,&State,sizeof(State))==ERR_NONE)

{

State = !State;

myplayer->Set(myplayer,PLAYER_MUTE,&State,sizeof(State));

}

 

5.音量或者和设置 myplayer->Get(myplayer,PLAYER_VOLUME,&vols,sizeof(vols));

myplayer->Set(myplayer,PLAYER_VOLUME,&vols,sizeof(vols));

 

6.播放模式设置

Int ModeSelY=1,ModeSelN=0;

myplayer->Set(myplayer,PLAYER_REPEAT,&ModeSelY,sizeof(ModeSelY));

myplayer->Set(myplayer,PLAYER_SHUFFLE,&ModeSelN,sizeof(int));

 

另:

 

tchar_t sss[128];

myplayer->CommentByName(myplayer,0,PlayerComment(COMMENT_ALBUM),sss,TSIZEOF(sss));

是获得ID3信息的途径。

支持参数如下:

#define COMMENT_TITLE 0x110

#define COMMENT_ARTIST 0x111

#define COMMENT_ALBUM 0x112

#define COMMENT_LANGUAGE 0x113

#define COMMENT_GENRE 0x114

#define COMMENT_AUTHOR 0x115

#define COMMENT_COPYRIGHT 0x116

#define COMMENT_PRIORITY 0x117

#define COMMENT_COMMENT 0x118

#define COMMENT_TRACK 0x119

#define COMMENT_YEAR 0x11A

#define COMMENT_COVER 0x11B

#define COMMENT_REDIRECT 0x11C

 

对视频而言,我们需要设置一个区域来显示视频,也就是设定PLAYER_VIEWPORT.注意此处的rect结构体的定义,不同于我们使用的RECT.其定义如下:

typedef struct rect

{

int x;

int y;

int Width;

int Height;

 

} rect;

 

对于图像的旋转(IF_OPTION_ROTATE)放大缩小(IF_OPITION_ZOOM)操作可以参考interface.c中Command函数的使用。

 

视频驱动的选择可以通过 PLAYER_VOUTPUTID参数设置,具体参考代码。

 

最后,使用完插件后,我们需要卸载它们。具体操作如下:

if(Context()->Wnd)

{

NodeRegSaveValue(0,REG_INITING,NULL,0,TYPE_INT);

NodeRegSave((node*)myplayer);

Context()->Error.Func = NULL;

ArrayClear(&VOutput);

ArrayClear(&AOutput);

 

Context_Wnd(NULL);

}

Context_Done();

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