misc image conversion routines More...

#include "avcodec.h"
#include "dsputil.h"
#include "imgconvert.h"
#include "internal.h"
#include "libavutil/avassert.h"
#include "libavutil/colorspace.h"
#include "libavutil/common.h"
#include "libavutil/pixdesc.h"
#include "libavutil/imgutils.h"

Macros
#define	FF_COLOR_NA -1

#define	FF_COLOR_RGB 0
	RGB color space.

#define	FF_COLOR_GRAY 1
	gray color space

#define	FF_COLOR_YUV 2
	YUV color space.

#define	FF_COLOR_YUV_JPEG 3
	YUV color space.

#define	deinterlace_line_inplace deinterlace_line_inplace_c

#define	deinterlace_line deinterlace_line_c

#define	pixdesc_has_alpha(pixdesc) ((pixdesc)->nb_components == 2 \|\| (pixdesc)->nb_components == 4 \|\| (pixdesc)->flags & AV_PIX_FMT_FLAG_PAL)

Functions
void	avcodec_get_chroma_sub_sample (enum AVPixelFormat pix_fmt, int h_shift, int v_shift)
	Utility function to access log2_chroma_w log2_chroma_h from the pixel format AVPixFmtDescriptor.

static int	get_color_type (const AVPixFmtDescriptor *desc)

static int	get_pix_fmt_depth (int min, int max, enum AVPixelFormat pix_fmt)

static int	get_pix_fmt_score (enum AVPixelFormat dst_pix_fmt, enum AVPixelFormat src_pix_fmt, unsigned *lossp, unsigned consider)

int	avcodec_get_pix_fmt_loss (enum AVPixelFormat dst_pix_fmt, enum AVPixelFormat src_pix_fmt, int has_alpha)
	Compute what kind of losses will occur when converting from one specific pixel format to another.

enum AVPixelFormat	avcodec_find_best_pix_fmt_of_2 (enum AVPixelFormat dst_pix_fmt1, enum AVPixelFormat dst_pix_fmt2, enum AVPixelFormat src_pix_fmt, int has_alpha, int *loss_ptr)
	Find the best pixel format to convert to given a certain source pixel format and a selection of two destination pixel formats.

enum AVPixelFormat	avcodec_find_best_pix_fmt2 (enum AVPixelFormat dst_pix_fmt1, enum AVPixelFormat dst_pix_fmt2, enum AVPixelFormat src_pix_fmt, int has_alpha, int *loss_ptr)

enum AVPixelFormat	avcodec_find_best_pix_fmt_of_list (const enum AVPixelFormat pix_fmt_list, enum AVPixelFormat src_pix_fmt, int has_alpha, int loss_ptr)
	Find the best pixel format to convert to given a certain source pixel format.

void	ff_shrink22 (uint8_t dst, int dst_wrap, const uint8_t src, int src_wrap, int width, int height)

void	ff_shrink44 (uint8_t dst, int dst_wrap, const uint8_t src, int src_wrap, int width, int height)

void	ff_shrink88 (uint8_t dst, int dst_wrap, const uint8_t src, int src_wrap, int width, int height)

static int	is_yuv_planar (const AVPixFmtDescriptor *desc)

int	av_picture_crop (AVPicture dst, const AVPicture src, enum AVPixelFormat pix_fmt, int top_band, int left_band)
	Crop image top and left side.

int	av_picture_pad (AVPicture dst, const AVPicture src, int height, int width, enum AVPixelFormat pix_fmt, int padtop, int padbottom, int padleft, int padright, int *color)
	Pad image.

static void	deinterlace_line_c (uint8_t dst, const uint8_t lum_m4, const uint8_t lum_m3, const uint8_t lum_m2, const uint8_t lum_m1, const uint8_t lum, int size)

static void	deinterlace_line_inplace_c (uint8_t lum_m4, uint8_t lum_m3, uint8_t lum_m2, uint8_t lum_m1, uint8_t *lum, int size)

static void	deinterlace_bottom_field (uint8_t dst, int dst_wrap, const uint8_t src1, int src_wrap, int width, int height)

static void	deinterlace_bottom_field_inplace (uint8_t *src1, int src_wrap, int width, int height)

int	avpicture_deinterlace (AVPicture dst, const AVPicture src, enum AVPixelFormat pix_fmt, int width, int height)
	deinterlace - if not supported return -1

Detailed Description

misc image conversion routines

Definition in file imgconvert.c.

Macro Definition Documentation

#define FF_COLOR_NA -1

Definition at line 47 of file imgconvert.c.

Referenced by get_color_type().

#define FF_COLOR_RGB 0

RGB color space.

Definition at line 48 of file imgconvert.c.

Referenced by get_color_type(), and get_pix_fmt_score().

#define FF_COLOR_GRAY 1

gray color space

Definition at line 49 of file imgconvert.c.

Referenced by get_color_type(), and get_pix_fmt_score().

#define FF_COLOR_YUV 2

YUV color space.

16 <= Y <= 235, 16 <= U, V <= 240

Definition at line 50 of file imgconvert.c.

Referenced by get_color_type(), and get_pix_fmt_score().

#define FF_COLOR_YUV_JPEG 3

YUV color space.

0 <= Y <= 255, 0 <= U, V <= 255

Definition at line 51 of file imgconvert.c.

Referenced by get_color_type(), and get_pix_fmt_score().

#define deinterlace_line_inplace deinterlace_line_inplace_c

Definition at line 57 of file imgconvert.c.

Referenced by deinterlace_bottom_field_inplace().

#define deinterlace_line deinterlace_line_c

Definition at line 58 of file imgconvert.c.

Referenced by deinterlace_bottom_field().

#define pixdesc_has_alpha ( pixdesc ) ((pixdesc)->nb_components == 2 || (pixdesc)->nb_components == 4 || (pixdesc)->flags & AV_PIX_FMT_FLAG_PAL)

Definition at line 61 of file imgconvert.c.

Referenced by get_pix_fmt_score().

Function Documentation

static int get_color_type ( const AVPixFmtDescriptor * desc )

static

Definition at line 73 of file imgconvert.c.

Referenced by get_pix_fmt_score().

static int get_pix_fmt_depth	(	int *	min,
		int *	max,
		enum AVPixelFormat	pix_fmt
	)

static

Definition at line 92 of file imgconvert.c.

Referenced by get_pix_fmt_score().

static int get_pix_fmt_score	(	enum AVPixelFormat	dst_pix_fmt,
		enum AVPixelFormat	src_pix_fmt,
		unsigned *	lossp,
		unsigned	consider
	)

static

Definition at line 110 of file imgconvert.c.

Referenced by avcodec_find_best_pix_fmt_of_2(), and avcodec_get_pix_fmt_loss().

void ff_shrink22	(	uint8_t *	dst,
		int	dst_wrap,
		const uint8_t *	src,
		int	src_wrap,
		int	width,
		int	height
	)

Definition at line 281 of file imgconvert.c.

Referenced by ff_dsputil_init().

void ff_shrink44	(	uint8_t *	dst,
		int	dst_wrap,
		const uint8_t *	src,
		int	src_wrap,
		int	width,
		int	height
	)

Definition at line 314 of file imgconvert.c.

Referenced by ff_dsputil_init().

void ff_shrink88	(	uint8_t *	dst,
		int	dst_wrap,
		const uint8_t *	src,
		int	src_wrap,
		int	width,
		int	height
	)

Definition at line 345 of file imgconvert.c.

Referenced by ff_dsputil_init().

static int is_yuv_planar ( const AVPixFmtDescriptor * desc )

inlinestatic

Definition at line 367 of file imgconvert.c.

Referenced by av_picture_crop(), and av_picture_pad().

static void deinterlace_line_c	(	uint8_t *	dst,
		const uint8_t *	lum_m4,
		const uint8_t *	lum_m3,
		const uint8_t *	lum_m2,
		const uint8_t *	lum_m1,
		const uint8_t *	lum,
		int	size
	)

static

Definition at line 483 of file imgconvert.c.

static void deinterlace_line_inplace_c	(	uint8_t *	lum_m4,
		uint8_t *	lum_m3,
		uint8_t *	lum_m2,
		uint8_t *	lum_m1,
		uint8_t *	lum,
		int	size
	)

static

Definition at line 508 of file imgconvert.c.

static void deinterlace_bottom_field	(	uint8_t *	dst,
		int	dst_wrap,
		const uint8_t *	src1,
		int	src_wrap,
		int	width,
		int	height
	)

static

Definition at line 535 of file imgconvert.c.

Referenced by avpicture_deinterlace().

static void deinterlace_bottom_field_inplace	(	uint8_t *	src1,
		int	src_wrap,
		int	width,
		int	height
	)

static

Definition at line 564 of file imgconvert.c.

Referenced by avpicture_deinterlace().

Macros

Functions

Detailed Description

Macro Definition Documentation

Function Documentation