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Fixed selecting media type in DShow video capture.

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Set correct value of sample size when calling IAMStreamConfig::SetFormat function. For non-RGB media type it can be set to zero value.
(See http://msdn.microsoft.com/en-us/library/windows/desktop/dd373477%28v=vs.85%29.aspx)
This commit is contained in:
Artur Wieczorek 2014-10-02 11:48:47 +02:00
parent ca5e73a9d0
commit de0b46a765
1 changed files with 9 additions and 1 deletions
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8
modules/videoio/src/cap_dshow.cpp
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@ -2416,7 +2416,15 @@ static bool setSizeAndSubtype(videoDevice * VD, int attemptWidth, int attemptHei
VD->pAmMediaType->subtype = mediatype; VD->pAmMediaType->subtype = mediatype;
//buffer size //buffer size
if (mediatype == MEDIASUBTYPE_RGB24)
{
VD->pAmMediaType->lSampleSize = attemptWidth*attemptHeight*3; VD->pAmMediaType->lSampleSize = attemptWidth*attemptHeight*3;
}
else
{
// For compressed data, the value can be zero.
VD->pAmMediaType->lSampleSize = 0;
}
//set fps if requested //set fps if requested
if( VD->requestedFrameTime != -1){ if( VD->requestedFrameTime != -1){