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 (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.