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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 stream, refstream;
size_t ptr;
ssize_t r;
int i;
ARGBEGIN {
default:
usage();
} ARGEND;
if (argc < 2)
usage();
for (i = 0; i < argc; i++) {
stream.file = argv[i];
stream.fd = open(stream.file, O_RDONLY);
if (stream.fd < 0)
eprintf("open %s:", stream.file);
einit_stream(&stream);
if (!i) {
memcpy(&refstream, &stream, sizeof(stream));
fprint_stream_head(stdout, &stream);
fflush(stdout);
if (ferror(stdout))
eprintf("<stdout>:");
} else {
if (stream.width != refstream.width || stream.height != refstream.height)
eprintf("videos do not have the same geometry\n");
if (strcmp(stream.pixfmt, refstream.pixfmt))
eprintf("videos use incompatible pixel formats\n");
}
for (; eread_stream(&stream, SIZE_MAX); stream.ptr = 0) {
for (ptr = 0;; ptr += (size_t)r) {
r = write(STDOUT_FILENO, stream.buf + ptr, stream.ptr - ptr);
if (r < 0)
eprintf("write <stdout>");
}
}
close(stream.fd);
}
return 0;
}
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