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);  
}