FFmpeg
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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"
Go to the source code of this file.
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. | |
misc image conversion routines
Definition in file imgconvert.c.
#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.
#define deinterlace_line deinterlace_line_c |
Definition at line 58 of file imgconvert.c.
#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().
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Definition at line 73 of file imgconvert.c.
Referenced by get_pix_fmt_score().
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static |
Definition at line 92 of file imgconvert.c.
Referenced by get_pix_fmt_score().
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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().
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inlinestatic |
Definition at line 367 of file imgconvert.c.
Referenced by av_picture_crop(), and av_picture_pad().