Use WIC to create image used in MFCopyImage

Question

I want to use WIC to create an image through code, and then use this image for the Media Foundation funtion MFCopyImage to create an IMFMediaBuffer. There are some missing pieces of how to link this to each other.

I found some sample code in order to create a IRandomAccessStream object containing the image from WIC by means of the IWICBitmapEncoder. On the other hande the MFCopyImage function needs an 'const BYTE *' type as a pointer to the image.

How can I convert a IRandomAccessStream object to a 'const BYTE *' pointer? Or is there another route between a WIC and MFCopyImage.

Thanks in advance!

Ronald

Answer 1

Found it.

IWICBitmapSource->CopyPixels was the missing piece.

Ronald

Answer 2

Even better without copying pixels:

IWICBitmap->Lock gives you lock

IWICBitmapLock->GetDataPointer gives you pointer to the pixels which can be used in MFCopyImage

Ronald

Answer 3

Thanks for sharing the solution.

Best regards,
Jesse

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Jesse Jiang
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