Sensoray 2255 Manual do Utilizador descarregar pdf (Página 20)

Linux SDK Reference

General Notes

Capture mode

The operating mode of each of the 2255’s capture channels is defined by the settings of the MODE2255

structure and is set by calling S2255_SetMode function.

typedef struct {

UINT32 format; //input video format (NTSC, PAL)

UINT32 scale; //output video scale

UINT32 color; //output video color format

UINT32 fdec; //frame decimation

UINT32 bright; //brightness

UINT32 contrast; //contrast

UINT32 saturation; //saturation

UINT32 hue; //hue (NTSC only)

UINT32 single; //unused

} MODE2255;

format

Video format: FORMAT_NTSC or FORMAT_PAL.

scale

Image scale: SCALE_4CIFS – 640x480 (NTSC), 704x576 (PAL);

SCALE_2CIFS – 640x240 (NTSC), 704x288 (PAL);

SCALE_1CIFS – 320x240 (NTSC), 352x288 (PAL);

SCALE_4CIFSI – 640x480 (NTSC), 704x576 (PAL) with

interpolation (deinterlacing);

SCALE_1CIFSF – 320x240 (NTSC), 704x288 (PAL), dual

field capture mode (60 Hz NTSC, 50 Hz PAL).

color

Color format, one of the following:

COLOR_YUVPL – YUV planar. The image data starts with an array of 1 byte Y component

data for all the pixels, followed by the Cr data for all odd pixels, followed by the Cb data for

all even pixels. Note that the amount of Y data is twice that of each color component.

COLOR_YUVPK – YUV packed. The image data is presented in the following sequence: Y-Cr-

Y-Cb-Y-Cr-Y-Cb, etc., where Y, Cb, and Cr are 1 byte each.

COLOR_RGB – RGB, 3 bytes per pixel, Windows bitmap compatible (BGR sequence, image

flipped vertically – bottom lines first).

COLOR_Y8 – monochrome image, 1 byte per pixel.

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