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/* See LICENSE file for copyright and license details. */
#include "stream.h"
#include "util.h"
#include <errno.h>
#include <fcntl.h>
#include <stdint.h>
#include <string.h>
#include <unistd.h>
USAGE("(count | 'inf') file")
int
main(int argc, char *argv[])
{
struct stream stream;
size_t count = 0, ptr, n;
ssize_t r;
char buf[BUFSIZ];
int inf = 0;
ENOFLAGS(argc != 2);
if (!strcmp(argv[0], "inf"))
inf = 1;
else
count = etozu_arg("the count", argv[0], 0, SIZE_MAX);
if (inf)
einf_check_fd(STDOUT_FILENO, "<stdout>");
stream.file = argv[1];
stream.fd = eopen(stream.file, O_RDONLY);
einit_stream(&stream);
if (count > SIZE_MAX / stream.frames)
eprintf("%s: video is too long\n", stream.file);
stream.frames *= count;
fprint_stream_head(stdout, &stream);
efflush(stdout, "<stdout>");
while (inf || count--) {
posix_fadvise(stream.fd, 0, 0, POSIX_FADV_SEQUENTIAL);
if (writeall(STDOUT_FILENO, stream.buf, stream.ptr))
goto writeerr;
for (ptr = 0;;) {
r = pread(stream.fd, buf, sizeof(buf), ptr);
if (r < 0)
eprintf("pread %s:", stream.file);
else if (r == 0)
break;
ptr += n = (size_t)r;
if (writeall(STDOUT_FILENO, buf, n))
goto writeerr;
}
}
close(stream.fd);
return 0;
writeerr:
if (!inf || errno != EPIPE)
eprintf("write <stdout>:");
return 0;
}
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