pgm.h

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/*
 * pgm.h
 *
 * Routines for querying and manipulating PGM (greyscale) images.
 */
 
#ifndef PGM_H
#define PGM_H
 
struct VideoFrame_;
struct AVFrame;
 
int pgm_read(unsigned char *buf, int width, int height, const char *filename);
int pgm_write(const unsigned char *buf, int width, int height,
        const char *filename);
int pgm_crop(struct AVFrame *dst, const struct AVFrame *src, int srcheight,
        int srcrow, int srccol, int cropwidth, int cropheight);
int pgm_overlay(struct AVFrame *dst,
        const struct AVFrame *s1, int s1height, int s1row, int s1col,
        const struct AVFrame *s2, int s2height);
int pgm_convolve_radial(struct AVFrame *dst, struct AVFrame *s1,
        struct AVFrame *s2, const struct AVFrame *src, int srcheight,
        const double *mask, int mask_radius);
 
#endif  /* !PGM_H */
 
/* vim: set expandtab tabstop=4 shiftwidth=4: */