Libav
imgutils.h
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18 
19 #ifndef AVUTIL_IMGUTILS_H
20 #define AVUTIL_IMGUTILS_H
21 
30 #include "avutil.h"
31 #include "pixdesc.h"
32 #include "rational.h"
33 
50 void av_image_fill_max_pixsteps(int max_pixsteps[4], int max_pixstep_comps[4],
51  const AVPixFmtDescriptor *pixdesc);
52 
59 int av_image_get_linesize(enum AVPixelFormat pix_fmt, int width, int plane);
60 
68 int av_image_fill_linesizes(int linesizes[4], enum AVPixelFormat pix_fmt, int width);
69 
82  uint8_t *ptr, const int linesizes[4]);
83 
94 int av_image_alloc(uint8_t *pointers[4], int linesizes[4],
95  int w, int h, enum AVPixelFormat pix_fmt, int align);
96 
106 void av_image_copy_plane(uint8_t *dst, int dst_linesize,
107  const uint8_t *src, int src_linesize,
108  int bytewidth, int height);
109 
116 void av_image_copy(uint8_t *dst_data[4], int dst_linesizes[4],
117  const uint8_t *src_data[4], const int src_linesizes[4],
118  enum AVPixelFormat pix_fmt, int width, int height);
119 
130 int av_image_check_size(unsigned int w, unsigned int h, int log_offset, void *log_ctx);
131 
144 int av_image_check_sar(unsigned int w, unsigned int h, AVRational sar);
145 
151 #endif /* AVUTIL_IMGUTILS_H */
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...
Definition: imgutils.c:50
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 accordi...
Definition: imgutils.c:181
external API header
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.
Definition: imgutils.c:32
uint8_t
const char data[16]
Definition: mxf.c:70
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.
Definition: imgutils.c:233
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.
Definition: imgutils.c:267
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 address...
Definition: imgutils.c:222
enum AVPixelFormat pix_fmt
Definition: movenc.c:843
static int width
Definition: utils.c:156
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.
Definition: imgutils.c:99
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
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.
Definition: imgutils.c:68
rational number numerator/denominator
Definition: rational.h:43
int height
Definition: gxfenc.c:72
rational numbers
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.
Definition: imgutils.c:254
AVPixelFormat
Pixel format.
Definition: pixfmt.h:63