Screen pixel format types

Types of supported pixel formats.

Synopsis:

#include <screen/screen.h>
 
 enum {
      SCREEN_FORMAT_BYTE = 1   
      SCREEN_FORMAT_RGBA4444 = 2   
      SCREEN_FORMAT_RGBX4444 = 3   
      SCREEN_FORMAT_RGBA5551 = 4   
      SCREEN_FORMAT_RGBX5551 = 5   
      SCREEN_FORMAT_RGB565 = 6   
      SCREEN_FORMAT_RGB888 = 7   
      SCREEN_FORMAT_RGBA8888 = 8   
      SCREEN_FORMAT_RGBX8888 = 9   
      SCREEN_FORMAT_YVU9 = 10   
      SCREEN_FORMAT_YUV420 = 11   
      SCREEN_FORMAT_NV12 = 12   
      SCREEN_FORMAT_YV12 = 13   
      SCREEN_FORMAT_UYVY = 14   
      SCREEN_FORMAT_YUY2 = 15   
      SCREEN_FORMAT_YVYU = 16   
      SCREEN_FORMAT_V422 = 17   
      SCREEN_FORMAT_AYUV = 18   
      SCREEN_FORMAT_NFORMATS   
};

Data:

SCREEN_FORMAT_BYTE
SCREEN_FORMAT_RGBA4444
16 bits per pixel (4 bits per channel) RGB with alpha channel
SCREEN_FORMAT_RGBX4444
16 bits per pixel (4 bits per channel) RGB with alpha channel disregarded
SCREEN_FORMAT_RGBA5551
16 bits per pixel, 2 bytes containing R, G, and B values (5 bits per channel with single-bit alpha channel)
SCREEN_FORMAT_RGBX5551
16 bits per pixel, 2 bytes containing R, G, and B values (5 bits per channel with single-bit alpha channel disregarded)
SCREEN_FORMAT_RGB565
16 bits per pixel; uses five bits for red, six bits for green and five bits for blue.

This pixel format represents each pixel in the following order (high byte to low byte): RRRR RGGG GGGB BBBB

SCREEN_FORMAT_RGB888
24 bits per pixel (8 bits per channel) RGB
SCREEN_FORMAT_RGBA8888
32 bits per pixel (8 bits per channel) RGB with alpha channel
SCREEN_FORMAT_RGBX8888
32 bits per pixel (8 bits per channel) RGB with alpha channel disregarded
SCREEN_FORMAT_YVU9
9 bits per pixel planar YUV format.

8-bit Y plane and 8-bit 4x4 subsampled U and V planes. Registered by Intel.

SCREEN_FORMAT_YUV420
Standard NTSC TV transmission format.
SCREEN_FORMAT_NV12
12 bits per pixel planar YUV format.

8-bit Y plane and 2x2 subsampled, interleaved U and V planes.

SCREEN_FORMAT_YV12
12 bits per pixel planar YUV format.

8-bit Y plane and 8-bit 2x2 subsampled U and V planes.

SCREEN_FORMAT_UYVY
16 bits per pixel packed YUV format.

YUV 4:2:2 - Y sampled at every pixel, U and V sampled at every second pixel horizontally on each line. A macropixel contains 2 pixels in 1 uint32.

SCREEN_FORMAT_YUY2
16 bits per pixel packed YUV format.

YUV 4:2:2 - as in UYVY, but with different component ordering within the uint32 macropixel.

SCREEN_FORMAT_YVYU
16 bits per pixel packed YUV format.

YUV 4:2:2 - as in UYVY, but with different component ordering within the uint32 macropixel.

SCREEN_FORMAT_V422
Packed YUV format.

Inverted version of UYVY.

SCREEN_FORMAT_AYUV
Packed YUV format.

Combined YUV and alpha

SCREEN_FORMAT_NFORMATS

Library:

libscreen

Description:

Formats with an alpha channel will have source alpha enabled automatically. Applications that want the Screen library to disregard the alpha channel can choose a pixel format with an X.

Last modified: 2013-12-21

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