imgutils.c File Reference

misc image utilities More...

#include "avassert.h"
#include "common.h"
#include "imgutils.h"
#include "internal.h"
#include "intreadwrite.h"
#include "log.h"
#include "mathematics.h"
#include "pixdesc.h"
#include "rational.h"

Go to the source code of this file.

Data Structures
struct	ImgUtils

Functions
void	av_image_fill_max_pixsteps (int max_pixsteps[4], int max_pixstep_comps[4], const AVPixFmtDescriptor *pixdesc)
	Compute the max pixel step for each plane of an image with a format described by pixdesc.
static int	image_get_linesize (int width, int plane, int max_step, int max_step_comp, const AVPixFmtDescriptor *desc)
int	av_image_get_linesize (enum AVPixelFormat pix_fmt, int width, int plane)
	Compute the size of an image line with format pix_fmt and width width for the plane plane.
int	av_image_fill_linesizes (int linesizes[4], enum AVPixelFormat pix_fmt, int width)
	Fill plane linesizes for an image with pixel format pix_fmt and width width.
int	av_image_fill_pointers (uint8_t *data[4], enum AVPixelFormat pix_fmt, int height, uint8_t *ptr, const int linesizes[4])
	Fill plane data pointers for an image with pixel format pix_fmt and height height.
int	avpriv_set_systematic_pal2 (uint32_t pal[256], enum AVPixelFormat pix_fmt)
int	av_image_alloc (uint8_t *pointers[4], int linesizes[4], int w, int h, enum AVPixelFormat pix_fmt, int align)
	Allocate an image with size w and h and pixel format pix_fmt, and fill pointers and linesizes accordingly.
int	av_image_check_size (unsigned int w, unsigned int h, int log_offset, void *log_ctx)
	Check if the given dimension of an image is valid, meaning that all bytes of the image can be addressed with a signed int.
int	av_image_check_sar (unsigned int w, unsigned int h, AVRational sar)
	Check if the given sample aspect ratio of an image is valid.
void	av_image_copy_plane (uint8_t *dst, int dst_linesize, const uint8_t *src, int src_linesize, int bytewidth, int height)
	Copy image plane from src to dst.
void	av_image_copy (uint8_t *dst_data[4], int dst_linesizes[4], const uint8_t *src_data[4], const int src_linesizes[4], enum AVPixelFormat pix_fmt, int width, int height)
	Copy image in src_data to dst_data.
int	av_image_fill_arrays (uint8_t *dst_data[4], int dst_linesize[4], const uint8_t *src, enum AVPixelFormat pix_fmt, int width, int height, int align)
	Setup the data pointers and linesizes based on the specified image parameters and the provided array.
int	av_image_get_buffer_size (enum AVPixelFormat pix_fmt, int width, int height, int align)
	Return the size in bytes of the amount of data required to store an image with the given parameters.
int	av_image_copy_to_buffer (uint8_t *dst, int dst_size, const uint8_t *const src_data[4], const int src_linesize[4], enum AVPixelFormat pix_fmt, int width, int height, int align)
	Copy image data from an image into a buffer.

Variables
static const AVClass	imgutils_class = { "IMGUTILS", av_default_item_name, NULL, LIBAVUTIL_VERSION_INT, 0x42, 0x42 }

Detailed Description

misc image utilities

Definition in file imgutils.c.

Function Documentation

static int image_get_linesize ( int  width, int  plane, int  max_step, int  max_step_comp, const AVPixFmtDescriptor *  desc  )

inlinestatic

Definition at line 53 of file imgutils.c.

Referenced by av_image_fill_linesizes(), and av_image_get_linesize().

int avpriv_set_systematic_pal2	(	uint32_t	pal[256],
		enum AVPixelFormat	pix_fmt
	)

Definition at line 152 of file imgutils.c.

Referenced by av_image_alloc(), bmp_encode_frame(), ff_mp_image_alloc_planes(), filter_frame(), gif_encode_init(), gif_write_header(), pcx_encode_frame(), raw_init_decoder(), and video_get_buffer().

Variable Documentation

const AVClass imgutils_class = { "IMGUTILS", av_default_item_name, NULL, LIBAVUTIL_VERSION_INT, 0x42, 0x42 }

static

Definition at line 231 of file imgutils.c.

Referenced by av_image_check_size().