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/* See LICENSE file for copyright and license details. */
#include "arg.h"
#include "stream.h"
#include "util.h"
#include <fcntl.h>
#include <inttypes.h>
#include <string.h>
#include <unistd.h>
static void
usage(void)
{
eprintf("usage: %s first-stream ... last-stream\n", argv0);
}
int
main(int argc, char *argv[])
{
struct stream *streams;
size_t ptr, frames = 0;
ssize_t r;
int i;
ARGBEGIN {
default:
usage();
} ARGEND;
if (argc < 2)
usage();
streams = malloc((size_t)argc * sizeof(*streams));
if (!streams)
eprintf("malloc:");
for (i = 0; i < argc; i++) {
streams[i].file = argv[i];
streams[i].fd = open(streams[i].file, O_RDONLY);
if (streams[i].fd < 0)
eprintf("open %s:", streams[i].file);
einit_stream(streams + i);
if (i) {
if (streams[i].width != streams->width || streams[i].height != streams->height)
eprintf("videos do not have the same geometry\n");
if (strcmp(streams[i].pixfmt, streams->pixfmt))
eprintf("videos use incompatible pixel formats\n");
}
if (streams[i].frames > SIZE_MAX - frames)
eprintf("resulting video is too long\n");
frames += streams[i].frames;
}
streams->frames = frames;
fprint_stream_head(stdout, streams);
fflush(stdout);
if (ferror(stdout))
eprintf("<stdout>:");
for (i = 0; i < argc; i++) {
for (; eread_stream(streams + i, SIZE_MAX); streams[i].ptr = 0) {
for (ptr = 0; ptr < streams[i].ptr; ptr += (size_t)r) {
r = write(STDOUT_FILENO, streams[i].buf + ptr, streams[i].ptr - ptr);
if (r < 0)
eprintf("write <stdout>");
}
}
close(streams[i].fd);
}
return 0;
}
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