media player 插件有关问题,有结果立即给分

media player 插件问题,在线等,有结果立即给分
请问开发media   player   插件能否达到播放自定义格式的视频文件或者其他媒体文件,如SWF,WMPSDK中定义的插件为Custom   Visualizations,Interface   Plug-ins,DSP   Plug-ins,Rendering   Plug-ins,其中Rendering   Plug-ins能否达到上述功能吗?media   player   中的插件是否只有上述4种,那datasource   plug-ins是什么?

------解决方案--------------------------------------------------------
lz 什么意思? 你要做media player插件么? 你是要让media player能够播放其他格式的音视频么?

如果是这样 你可以做一个decoder filter 和parser filter 然后把这两个filter注册到media 下面就可以用了


------解决方案--------------------------------------------------------
1.定义格式扩展名，让media player认识
２．写一个source filter，并注册
３．定义解码filter
示例代码:
char m_szFileExt = {"mp2"};
HKEY hKey, hSubKey, hSubSubKey, hSub3Key;
DWORD dwDisposition;
LONG lreturn = -1;

m_StaticInfo += "Regist file: ";
m_StaticInfo += m_szFileExt;


CheckReturn( RegCreateKeyEx(HKEY_CLASSES_ROOT, m_szFileExt, 0,
TEXT(""), 0, 0, 0, &hKey, &dwDisposition) );

CheckReturn( RegSetValueEx(hKey, TEXT(""), 0L, REG_SZ,
(CONST BYTE *)m_szFileType,
sizeof(TCHAR) * (_tcslen(m_szFileType)+1) ) );
CheckReturn( RegCloseKey( hKey ) );


CheckReturn( RegCreateKeyEx(HKEY_CLASSES_ROOT, m_szFileType, 0,
TEXT(""), 0, 0, 0, &hKey, &dwDisposition) );
CheckReturn( RegCreateKeyEx(hKey, TEXT("Shell"), 0,
TEXT(""), 0, 0, 0, &hSubKey, &dwDisposition) );
CheckReturn( RegCreateKeyEx(hSubKey, TEXT("Open"), 0,
TEXT(""), 0, 0, 0, &hSubSubKey, &dwDisposition) );
CheckReturn( RegCreateKeyEx(hSubSubKey, TEXT("Command"), 0,
TEXT(""), 0, 0, 0, &hSub3Key, &dwDisposition) );
CheckReturn( RegSetValueEx(hSub3Key, TEXT(""), 0L, REG_SZ,
(CONST BYTE *)m_szWMP,
sizeof(TCHAR) * (_tcslen(m_szWMP)+1) ) );
CheckReturn( RegCloseKey( hSub3Key ) ) ;
CheckReturn( RegCloseKey( hSubSubKey ) );
CheckReturn( RegCloseKey( hSubKey ) );

CheckReturn( RegCloseKey( hKey ) );


CheckReturn( RegOpenKeyEx(HKEY_CLASSES_ROOT, TEXT("Media Type"), 0, 0, &hKey) );
CheckReturn( RegCreateKeyEx(hKey, TEXT("Extensions"), 0,
TEXT(""), 0, 0, 0, &hSubKey, &dwDisposition) );
CheckReturn( RegCloseKey( hKey ) );

hKey = hSubKey;
CheckReturn( RegCreateKeyEx(hKey, m_szFileExt, 0,
TEXT(""), 0, 0, 0, &hSubKey, &dwDisposition) );
CheckReturn( RegSetValueEx(hSubKey, TEXT("Source Filter"), 0L, REG_SZ,
(CONST BYTE *)m_szSourceFilter, sizeof(TCHAR) * (_tcslen(m_szSourceFilter)+1)) );
CheckReturn( RegSetValueEx(hSubKey, TEXT("Media Type"), 0L, REG_SZ,
(CONST BYTE *)m_SZMediaType, sizeof(TCHAR) * (_tcslen(m_SZMediaType)+1)) );
CheckReturn( RegSetValueEx(hSubKey, TEXT("Subtype"), 0L, REG_SZ,
(CONST BYTE *)m_szSubtype, sizeof(TCHAR) * (_tcslen(m_szSubtype)+1)) );
CheckReturn( RegCloseKey( hKey ) );
CheckReturn( RegCloseKey( hSubKey ) );


HRESULT hr = RegOpenKeyEx(HKEY_LOCAL_MACHINE, TEXT("SOFTWARE\\Microsoft\\Multimedia\\CEPlayer\\Extensions"), 0, 0, &hKey);
if(hr == S_OK)
{
CheckReturn( RegCreateKeyEx(hKey, m_szFileExt, 0,
TEXT(""), 0, 0, 0, &hSubKey, &dwDisposition) );
DWORD dwValue = 7;
CheckReturn( RegSetValueEx(hSubKey, TEXT("Runtime"), 0L, REG_DWORD,
(CONST BYTE *)&dwValue, sizeof dwValue ) );
dwValue = 9;
CheckReturn( RegSetValueEx(hSubKey, TEXT("Permissions"), 0L, REG_DWORD,
(CONST BYTE *)&dwValue, sizeof dwValue ) );
CheckReturn( RegCloseKey( hKey ) );
CheckReturn( RegCloseKey( hSubKey ) );