CBaseControlVideo::CopyImage

  • Article

Creates a memory copy of an image.

HRESULT CopyImage(
IMediaSample* pMediaSample,
VIDEOINFOHEADER* pVideoInfo,
LONG* pBufferSize,
BYTE* pVideoImage,
RECT* pSourceRect
);

Parameters

  • pMediaSample
    Sample containing the video image.
  • pVideoInfo
    Format representing the video image.
  • pBufferSize
    Size of the output buffer.
  • pVideoImage
    Pointer to the output buffer.
  • pSourceRect
    Source video rectangle.

Return Values

If the pVideoImage parameter is NULL, the pBufferSize parameter is filled in with the number of bytes the output buffer requires to store the image. If the buffer passed in is too small or the member function fails to allocate sufficient memory, the member function returns E_OUTOFMEMORY.

Remarks

The member function retrieves the image from the sample and copies it into the output buffer. The section of video copied into the output buffer reflects the source rectangle that is set through the IBasicVideo interface (although it does not reflect the destination rectangle).

Requirements

DirectShow applications and DirectShow filters have different include file and link library requirements. See Setting Up the Build Environment for more information.

OS Versions: Windows CE 2.12 and later. Version 2.12 requires DXPAK 1.0 or later.
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Last updated on Wednesday, April 13, 2005

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