typedef struct {
DWORD dwFlags;
LPBITMAPINFOHEADER lpbiInput;
LPVOID lpInput;
LPBITMAPINFOHEADER lpbiOutput;
LPVOID lpOutput;
DWORD ckid;
} ICDECOMPRESS;
The ICDECOMPRESS structure is used with the ICM_DECOMPRESS message to specify the parameters for decompressing the data.
Members
dwFlags
Specifies applicable flags. The following flags are defined:
| Flag | Meaning |
| ICDECOMPRESS_HURRYUP | Indicates the data is just buffered and not drawn to the screen. Use this flag for the fastest decompression. |
| ICDECOMPRESS_UPDATE | Indicates the screen is being updated. |
| ICDECOMPRESS_PREROLL | Indicates this frame is not drawn because it is prior to the point in the movie where play begins. |
| ICDECOMPRESS_NULLFRAME | Indicates this frame does not have any data, and the decompressed image should be left the same. |
| ICDECOMPRESS_NOTKEYFRAME | Indicates that this frame is not a key frame. |
lpbiInput
Specifies a pointer to a BITMAPINFOHEADER structure containing the input format.
lpInput
Specifies a pointer to a data buffer containing the input data.
lpbiOutput
Specifies a pointer to a BITMAPINFOHEADER structure containing the output format.
lpOutput
Specifies a pointer to a data buffer where the driver should write the decompressed image.
ckid
Specifies the chunk ID from the AVI file.