IltmmWMProfile::GetStream Example for C

LPTSTR OLE2A(LPCOLESTR lpw) 
{ 
   static CHAR convert[512]; 
   if(!lpw) 
      return NULL; 
   convert[0] = '\0'; 
   WideCharToMultiByte(CP_ACP, 0, lpw, -1, convert, 512, NULL, NULL); 
   return convert; 
} 
void IltmmWMProfile_GetStream_Example (IltmmWMProfile *pProfile) 
{ 
   IltmmWMStreamConfig *pStreamConfig = NULL; 
   BSTR bstrString; 
   long lStreamCount; 
   int i; 
   long lValue; 
   double fValue; 
   char temp[50]; 
   // Show all the information regarding the streams 
   IltmmWMProfile_get_StreamCount(pProfile, &lStreamCount); 
   for(i=0; i<lStreamCount; i++) 
   { 
      IltmmWMProfile_GetStream(pProfile, i, &pStreamConfig); 
      sprintf(temp, "[[ Stream %d ]]\n", i); 
      printf(temp); 
      // Get the major type of the stream 
      IltmmWMStreamConfig_get_StreamType(pStreamConfig, &bstrString); 
      printf("Stream type : "); 
      printf(OLE2A(bstrString)); 
      printf("\n"); 
      SysFreeString(bstrString); 
      // Get Stream number 
      IltmmWMStreamConfig_get_StreamNumber(pStreamConfig, &lValue); 
      printf("Stream number : "); 
      printf(ltoa(lValue, temp, 10)); 
      printf("\n"); 
      // Get Stream name 
      IltmmWMStreamConfig_get_StreamName(pStreamConfig, &bstrString); 
      printf("Stream name : "); 
      printf(OLE2A(bstrString)); 
      printf("\n"); 
      SysFreeString(bstrString); 
      // Get Connection name 
      IltmmWMStreamConfig_get_ConnectionName(pStreamConfig, &bstrString); 
      printf("Stream connection name : "); 
      printf(OLE2A(bstrString)); 
      printf("\n"); 
      SysFreeString(bstrString); 
      // Get Bitrate 
      IltmmWMStreamConfig_get_Bitrate(pStreamConfig, &lValue); 
      printf("Stream bitrate : "); 
      printf(ltoa(lValue, temp, 10)); 
      printf("\n"); 
      // Get the maximum latency (time in milliseconds) between stream reception and display 
      IltmmWMStreamConfig_get_BufferWindow(pStreamConfig, &lValue); 
      printf("Stream buffer window : "); 
      printf(ltoa(lValue, temp, 10)); 
      printf("\n"); 
      // Get the major type of the media in the stream 
      IltmmWMStreamConfig_get_Type(pStreamConfig, &bstrString); 
      printf("Major type of the stream media : "); 
      printf(OLE2A(bstrString)); 
      printf("\n"); 
      SysFreeString(bstrString); 
      // Get the maximum key frame time interval (in 100-nano seconds) 
      IltmmWMStreamConfig_get_MaxKeyFrameSpacing(pStreamConfig, &fValue); 
      printf("Maximum key frame time interval : "); 
      sprintf(temp, "%.Ef", fValue); 
      printf(temp); 
      printf("\n"); 
      // Get the Quality, range from 0 to 100 
      // where zero denotes maximum frame rate and 100 denotes maximum quality. 
      IltmmWMStreamConfig_get_Quality(pStreamConfig, &lValue); 
      printf("Stream quality : "); 
      printf(ltoa(lValue, temp, 10)); 
      if(lValue == -1) 
         printf(" ...(Unknown)"); 
      printf("\n\n"); 
      IltmmWMStreamConfig_Release(pStreamConfig); 
   } 
   IltmmWMProfile_Release(pProfile); 
}