ICCOMPRESSFRAMES

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The ICCOMPRESSFRAMES structure contains compression parameters used with the ICM_COMPRESS_FRAMES_INFO message.

typedef struct {

DWORD dwFlags;

LPBITMAPINFOHEADER lpbiOutput;

LPARAM lOutput;

LPBITMAPINFOHEADER lpbiInput;

LPARAM lInput;

LONG lStartFrame;

LONG lFrameCount;

LONG lQuality;

LONG lDataRate;

LONG lKeyRate;

DWORD dwRate;

DWORD dwScale;

DWORD dwOverheadPerFrame;

DWORD dwReserved2;

LONG (CALLBACK* GetData) (LPARAM lInput, LONG lFrame,
LPVOID lpBits, LONG len);

LONG (CALLBACK* PutData) (LPARAM lInput, LONG lFrame,
LPVOID lpBits, LONG len);

} ICCOMPRESSFRAMES;

Members
dwFlags

Applicable flags. The following value is defined:

ICDECOMPRESSFRAMES_PADDING

Padding is used with the frame.

lpbiOutput

Address of a BITMAPINFOHEADER structure containing the output format.

lOutput
Reserved; do not use.

lpbiInput

Address of a BITMAPINFOHEADER structure containing the input format.

lInput
Reserved; do not use.

lStartFrame

Number of the first frame to compress.

lFrameCount

Number of frames to compress.

lQuality
Quality setting.

lDataRate

Maximum data rate, in bytes per second.

lKeyRate

Maximum number of frames between consecutive key frames.

dwRate

Compression rate in an integer format. To obtain the rate in frames per second, divide this value by the value in dwScale.

dwScale

Value used to scale dwRate to frames per second.

dwOverheadPerFrame
Reserved; do not use.

dwReserved2
Reserved; do not use.

GetData

Reserved; do not use.

PutData

Reserved; do not use.

See Also
BITMAPINFOHEADER, ICM_COMPRESS_FRAMES_INFO

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