Miam-Player  0.8.0
A nice music player
AVPixFmtDescriptor Struct Reference

#include <pixdesc.h>

Public Attributes

const char * name
 
uint8_t nb_components
 The number of components each pixel has, (1-4) More...
 
uint8_t log2_chroma_w
 
uint8_t log2_chroma_h
 
uint64_t flags
 
AVComponentDescriptor comp [4]
 
const char * alias
 

Detailed Description

Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes of an image. It also stores the subsampling factors and number of components.

Note
This is separate of the colorspace (RGB, YCbCr, YPbPr, JPEG-style YUV and all the YUV variants) AVPixFmtDescriptor just stores how values are stored not what these values represent.

Member Data Documentation

◆ alias

const char* AVPixFmtDescriptor::alias

Alternative comma-separated names.

◆ comp

AVComponentDescriptor AVPixFmtDescriptor::comp[4]

Parameters that describe how pixels are packed. If the format has 1 or 2 components, then luma is 0. If the format has 3 or 4 components: if the RGB flag is set then 0 is red, 1 is green and 2 is blue; otherwise 0 is luma, 1 is chroma-U and 2 is chroma-V.

If present, the Alpha channel is always the last component.

◆ flags

uint64_t AVPixFmtDescriptor::flags

Combination of AV_PIX_FMT_FLAG_... flags.

◆ log2_chroma_h

uint8_t AVPixFmtDescriptor::log2_chroma_h

Amount to shift the luma height right to find the chroma height. For YV12 this is 1 for example. chroma_height= AV_CEIL_RSHIFT(luma_height, log2_chroma_h) The note above is needed to ensure rounding up. This value only refers to the chroma components.

◆ log2_chroma_w

uint8_t AVPixFmtDescriptor::log2_chroma_w

Amount to shift the luma width right to find the chroma width. For YV12 this is 1 for example. chroma_width = AV_CEIL_RSHIFT(luma_width, log2_chroma_w) The note above is needed to ensure rounding up. This value only refers to the chroma components.

◆ name

const char* AVPixFmtDescriptor::name

◆ nb_components

uint8_t AVPixFmtDescriptor::nb_components

The number of components each pixel has, (1-4)


The documentation for this struct was generated from the following file: