ICCOMPRESSFRAMES
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