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/* See LICENSE file for copyright and license details. */
#include <limits.h>
#include <stddef.h>
#include <stdio.h>
#define STREAM_HEAD_MAX (3 * INTSTRLEN(size_t) + sizeof(((struct stream *)0)->pixfmt) + 10)
#define SPRINTF_HEAD_ZN(BUF, FRAMES, WIDTH, HEIGHT, PIXFMT, LENP)\
sprintf(BUF, "%zu %zu %zu %s\n%cuivf%zn",\
(size_t)(FRAMES), (size_t)(WIDTH), (size_t)(HEIGHT), PIXFMT, 0, LENP)
#define SPRINTF_HEAD(BUF, FRAMES, WIDTH, HEIGHT, PIXFMT)\
sprintf(BUF, "%zu %zu %zu %s\n%cuivf",\
(size_t)(FRAMES), (size_t)(WIDTH), (size_t)(HEIGHT), PIXFMT, 0)
#define FPRINTF_HEAD(FP, FRAMES, WIDTH, HEIGHT, PIXFMT)\
fprintf(FP, "%zu %zu %zu %s\n%cuivf",\
(size_t)(FRAMES), (size_t)(WIDTH), (size_t)(HEIGHT), PIXFMT, 0)
#define FPRINTF_HEAD_FMT(FP, FFRAMES, FRAMES, FWIDTH, WIDTH, FHEIGHT, HEIGHT, PIXFMT)\
fprintf(FP, FFRAMES" "FWIDTH" "FHEIGHT" %s\n%cuivf",\
FRAMES, WIDTH, HEIGHT, PIXFMT, 0)
#define einit_stream(...) eninit_stream(1, __VA_ARGS__)
#define eopen_stream(...) enopen_stream(1, __VA_ARGS__)
#define eset_pixel_size(...) enset_pixel_size(1, __VA_ARGS__)
#define eread_stream(...) enread_stream(1, __VA_ARGS__)
#define einf_check_fd(...) eninf_check_fd(1, __VA_ARGS__)
#define echeck_dimensions(...) encheck_dimensions(1, __VA_ARGS__)
#define echeck_dimensions_custom(...) encheck_dimensions_custom(1, __VA_ARGS__)
#define echeck_compat(...) encheck_compat(1, __VA_ARGS__)
#define eread_segment(...) enread_segment(1, __VA_ARGS__)
#define eread_frame(...) enread_frame(1, __VA_ARGS__)
#define eread_row(...) enread_row(1, __VA_ARGS__)
#define esend_frames(...) ensend_frames(1, __VA_ARGS__)
#define esend_stream(...) ensend_stream(1, __VA_ARGS__)
#define process_stream(...) nprocess_stream(1, __VA_ARGS__)
#define process_each_frame_segmented(...) nprocess_each_frame_segmented(1, __VA_ARGS__)
#define process_two_streams(...) nprocess_two_streams(1, __VA_ARGS__)
#define process_multiple_streams(...) nprocess_multiple_streams(1, __VA_ARGS__)
#define process_each_frame_two_streams(...) nprocess_each_frame_two_streams(1, __VA_ARGS__)
enum dimension {
WIDTH = 1,
HEIGHT = 2,
LENGTH = 4
};
struct stream {
size_t frames;
size_t width;
size_t height;
size_t pixel_size;
char pixfmt[32];
int fd;
#if INT_MAX != LONG_MAX
int padding__;
#endif
size_t ptr;
size_t xptr;
char buf[BUFSIZ];
const char *file;
size_t headlen;
size_t row_size;
size_t col_size;
size_t frame_size;
};
void eninit_stream(int status, struct stream *stream);
void enopen_stream(int status, struct stream *stream, const char *file);
int set_pixel_size(struct stream *stream);
void enset_pixel_size(int status, struct stream *stream);
void fprint_stream_head(FILE *fp, struct stream *stream);
size_t enread_stream(int status, struct stream *stream, size_t n);
void eninf_check_fd(int status, int fd, const char *file);
void encheck_dimensions(int status, const struct stream *stream, enum dimension dimensions, const char *prefix);
void encheck_compat(int status, const struct stream *a, const struct stream *b);
const char *get_pixel_format(const char *specified, const char *current);
int enread_segment(int status, struct stream *stream, void *buf, size_t n);
size_t ensend_frames(int status, struct stream *stream, int outfd, size_t frames, const char *outfname);
int ensend_stream(int status, struct stream *stream, int outfd, const char *outfname);
void nprocess_stream(int status, struct stream *stream, void (*process)(struct stream *stream, size_t n));
void nprocess_each_frame_segmented(int status, struct stream *stream, int output_fd, const char* output_fname,
void (*process)(struct stream *stream, size_t n, size_t frame));
void nprocess_two_streams(int status, struct stream *left, struct stream *right, int output_fd, const char* output_fname,
void (*process)(struct stream *left, struct stream *right, size_t n));
void nprocess_multiple_streams(int status, struct stream *streams, size_t n_streams, int output_fd, const char* output_fname,
int shortest, void (*process)(struct stream *streams, size_t n_streams, size_t n));
void nprocess_each_frame_two_streams(int status, struct stream *left, struct stream *right, int output_fd, const char* output_fname,
void (*process)(char *restrict output, char *restrict lbuf, char *restrict rbuf,
struct stream *left, struct stream *right));
static inline int
enread_frame(int status, struct stream *stream, void *buf)
{
return enread_segment(status, stream, buf, stream->frame_size);
}
static inline int
enread_row(int status, struct stream *stream, void *buf)
{
return enread_segment(status, stream, buf, stream->row_size);
}
static inline void
encheck_dimensions_custom(int status, size_t width, size_t height, size_t frames,
size_t pixel_size, const char *prefix, const char *fname)
{
enum dimension dims = 0;
struct stream stream;
dims |= width ? WIDTH : 0;
dims |= height ? HEIGHT : 0;
dims |= frames ? LENGTH : 0;
stream.width = width;
stream.height = height;
stream.frames = frames;
stream.pixel_size = pixel_size;
stream.file = fname;
encheck_dimensions(status, &stream, dims, prefix);
}
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