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NF:vfw.ICDecompressEx |
ICDecompressEx function (vfw.h) |
The ICDecompressEx function decompresses a single video frame. |
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multimedia\icdecompressex.htm |
Multimedia |
a7ae0409-e89d-400a-a601-edc8e6e3fbcc |
12/05/2018 |
ICDecompressEx, ICDecompressEx function [Windows Multimedia], _win32_ICDecompressEx, multimedia.icdecompressex, vfw/ICDecompressEx |
vfw.h |
Windows |
Windows 2000 Professional [desktop apps only] |
Windows 2000 Server [desktop apps only] |
Windows |
19H1 |
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The ICDecompressEx function decompresses a single video frame.
Handle to the decompressor.
Decompression flags. The following values are defined.
| Value | Meaning |
|---|---|
| ICDECOMPRESS_HURRYUP | Tries to decompress at a faster rate. When an application uses this flag, the driver should buffer the decompressed data but not draw the image. |
| ICDECOMPRESS_NOTKEYFRAME | Current frame is not a key frame. |
| ICDECOMPRESS_NULLFRAME | Current frame does not contain data and the decompressed image should be left the same. |
| ICDECOMPRESS_PREROLL | Current frame precedes the point in the movie where playback starts and, therefore, will not be drawn. |
| ICDECOMPRESS_UPDATE | Screen is being updated or refreshed. |
Pointer to a BITMAPINFOHEADER structure containing the format of the compressed data.
Pointer to the input data.
The x-coordinate of the source rectangle for the DIB specified by lpbiSrc.
The y-coordinate of the source rectangle for the DIB specified by lpbiSrc.
Width of the source rectangle.
Height of the source rectangle.
Pointer to a BITMAPINFOHEADER structure containing the output format.
Pointer to a buffer that is large enough to contain the decompressed data.
The x-coordinate of the destination rectangle for the DIB specified by lpbiDst.
The y-coordinate of the destination rectangle for the DIB specified by lpbiDst.
Width of the destination rectangle.
Height of the destination rectangle.
Returns ICERR_OK if successful or an error otherwise.
Typically, applications use the ICDECOMPRESS_PREROLL flag to seek to a key frame in a compressed stream. The flag is sent with the key frame and with subsequent frames required to decompress the desired frame.