libavcodec/imgconvert.c File Reference

misc image conversion routines More...

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

Go to the source code of this file.

Data Structures

struct PixFmtInfo

Defines

#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 & PIX_FMT_PAL)

Functions

void avcodec_get_chroma_sub_sample (enum PixelFormat pix_fmt, int *h_shift, int *v_shift)

int ff_is_hwaccel_pix_fmt (enum PixelFormat pix_fmt)

Determine whether pix_fmt is a hardware accelerated format.

int avpicture_fill (AVPicture *picture, uint8_t *ptr, enum PixelFormat pix_fmt, int width, int height)

Fill in the AVPicture fields.

int avpicture_layout (const AVPicture *src, enum PixelFormat pix_fmt, int width, int height, unsigned char *dest, int dest_size)

Copy pixel data from an AVPicture into a buffer.

int avpicture_get_size (enum PixelFormat pix_fmt, int width, int height)

Calculate the size in bytes that a picture of the given width and height would occupy if stored in the given picture format.

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

int avcodec_get_pix_fmt_loss (enum PixelFormat dst_pix_fmt, enum PixelFormat src_pix_fmt, int has_alpha)

Compute what kind of losses will occur when converting from one specific pixel format to another.

static int avg_bits_per_pixel (enum PixelFormat pix_fmt)

enum PixelFormat avcodec_find_best_pix_fmt (int64_t pix_fmt_mask, enum PixelFormat src_pix_fmt, int has_alpha, int *loss_ptr)

Find the best pixel format to convert to given a certain source pixel format.

enum PixelFormat avcodec_find_best_pix_fmt2 (enum PixelFormat dst_pix_fmt1, enum PixelFormat dst_pix_fmt2, enum PixelFormat 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.

void av_picture_copy (AVPicture *dst, const AVPicture *src, enum PixelFormat pix_fmt, int width, int height)

Copy image src to dst.

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)

int avpicture_alloc (AVPicture *picture, enum PixelFormat pix_fmt, int width, int height)

Allocate memory for a picture.

void avpicture_free (AVPicture *picture)

Free a picture previously allocated by avpicture_alloc().

static int is_yuv_planar (enum PixelFormat fmt)

int av_picture_crop (AVPicture *dst, const AVPicture *src, enum PixelFormat 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 PixelFormat 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 PixelFormat pix_fmt, int width, int height)

deinterlace - if not supported return -1

Variables

static const PixFmtInfo pix_fmt_info [PIX_FMT_NB]

Detailed Description

misc image conversion routines

Definition in file imgconvert.c.

Define Documentation

#define deinterlace_line deinterlace_line_c

Definition at line 55 of file imgconvert.c.

Referenced by deinterlace_bottom_field().

#define deinterlace_line_inplace deinterlace_line_inplace_c

Definition at line 54 of file imgconvert.c.

Referenced by deinterlace_bottom_field_inplace().

#define FF_COLOR_GRAY 1

gray color space

Definition at line 46 of file imgconvert.c.

Referenced by avcodec_get_pix_fmt_loss().

#define FF_COLOR_RGB 0

RGB color space.

Definition at line 45 of file imgconvert.c.

Referenced by avcodec_get_pix_fmt_loss().

#define FF_COLOR_YUV 2

YUV color space.

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

Definition at line 47 of file imgconvert.c.

Referenced by avcodec_get_pix_fmt_loss(), and is_yuv_planar().

#define FF_COLOR_YUV_JPEG 3

YUV color space.

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

Definition at line 48 of file imgconvert.c.

Referenced by avcodec_get_pix_fmt_loss(), and is_yuv_planar().

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

Definition at line 58 of file imgconvert.c.

Referenced by avcodec_get_pix_fmt_loss().

Function Documentation

static int avg_bits_per_pixel ( enum PixelFormat pix_fmt ) [static]

Definition at line 454 of file imgconvert.c.

Referenced by avcodec_find_best_pix_fmt2().

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 800 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 829 of file imgconvert.c.

Referenced by avpicture_deinterlace().

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 748 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 773 of file imgconvert.c.

int ff_is_hwaccel_pix_fmt ( enum PixelFormat pix_fmt )

Determine whether pix_fmt is a hardware accelerated format.

Definition at line 291 of file imgconvert.c.

Referenced by avcodec_default_get_format().

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

Definition at line 529 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 562 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 593 of file imgconvert.c.

Referenced by ff_dsputil_init().

static int get_pix_fmt_depth	(	int *	min,
		int *	max,
		enum PixelFormat	pix_fmt
	)			`[static]`

Definition at line 367 of file imgconvert.c.

Referenced by avcodec_get_pix_fmt_loss().

static int is_yuv_planar ( enum PixelFormat fmt ) [inline, static]

Definition at line 634 of file imgconvert.c.

Referenced by av_picture_crop(), and av_picture_pad().

Variable Documentation

const PixFmtInfo pix_fmt_info[PIX_FMT_NB] [static]

Definition at line 67 of file imgconvert.c.


Data Structures
struct	PixFmtInfo
Defines
#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 & PIX_FMT_PAL)
Functions
void	avcodec_get_chroma_sub_sample (enum PixelFormat pix_fmt, int h_shift, int v_shift)
int	ff_is_hwaccel_pix_fmt (enum PixelFormat pix_fmt)
	Determine whether pix_fmt is a hardware accelerated format.
int	avpicture_fill (AVPicture picture, uint8_t ptr, enum PixelFormat pix_fmt, int width, int height)
	Fill in the AVPicture fields.
int	avpicture_layout (const AVPicture src, enum PixelFormat pix_fmt, int width, int height, unsigned char dest, int dest_size)
	Copy pixel data from an AVPicture into a buffer.
int	avpicture_get_size (enum PixelFormat pix_fmt, int width, int height)
	Calculate the size in bytes that a picture of the given width and height would occupy if stored in the given picture format.
static int	get_pix_fmt_depth (int min, int max, enum PixelFormat pix_fmt)
int	avcodec_get_pix_fmt_loss (enum PixelFormat dst_pix_fmt, enum PixelFormat src_pix_fmt, int has_alpha)
	Compute what kind of losses will occur when converting from one specific pixel format to another.
static int	avg_bits_per_pixel (enum PixelFormat pix_fmt)
enum PixelFormat	avcodec_find_best_pix_fmt (int64_t pix_fmt_mask, enum PixelFormat src_pix_fmt, int has_alpha, int *loss_ptr)
	Find the best pixel format to convert to given a certain source pixel format.
enum PixelFormat	avcodec_find_best_pix_fmt2 (enum PixelFormat dst_pix_fmt1, enum PixelFormat dst_pix_fmt2, enum PixelFormat 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.
void	av_picture_copy (AVPicture dst, const AVPicture src, enum PixelFormat pix_fmt, int width, int height)
	Copy image src to dst.
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)
int	avpicture_alloc (AVPicture *picture, enum PixelFormat pix_fmt, int width, int height)
	Allocate memory for a picture.
void	avpicture_free (AVPicture *picture)
	Free a picture previously allocated by avpicture_alloc().
static int	is_yuv_planar (enum PixelFormat fmt)
int	av_picture_crop (AVPicture dst, const AVPicture src, enum PixelFormat 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 PixelFormat 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 PixelFormat pix_fmt, int width, int height)
	deinterlace - if not supported return -1
Variables
static const PixFmtInfo	pix_fmt_info [PIX_FMT_NB]