/*
* Copyright (c) 2005 Francois Revol
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#include <limits.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#if HAVE_UNISTD_H
#include <unistd.h>
#endif
#if HAVE_IO_H
#include <io.h>
#endif
#include "libavutil/avstring.h"
#include "libavutil/time.h"
#include "libavformat/avformat.h"
#define FILENAME_BUF_SIZE 4096
#define PKTFILESUFF "_%08" PRId64 "_%02d_%010" PRId64 "_%06d_%c.bin"
static int usage(int ret)
{
fprintf(stderr
, "Dump (up to maxpkts) AVPackets as they are demuxed by libavformat.\n");
fprintf(stderr
, "Each packet is dumped in its own file named like\n");
fprintf(stderr
, "$(basename file.ext)_$PKTNUM_$STREAMINDEX_$STAMP_$SIZE_$FLAGS.bin\n");
fprintf(stderr
, "pktdumper [-nw] file [maxpkts]\n");
fprintf(stderr
, "-n\twrite No file at all, only demux.\n");
fprintf(stderr
, "-w\tWait at end of processing instead of quitting.\n");
return ret;
}
int main(int argc, char **argv)
{
char fntemplate[FILENAME_BUF_SIZE];
char pktfilename[FILENAME_BUF_SIZE];
AVFormatContext *fctx = NULL;
AVPacket pkt;
int64_t pktnum = 0;
int64_t maxpkts = 0;
int donotquit = 0;
int nowrite = 0;
int err;
if ((argc
> 1) && !strncmp(argv
[1], "-", 1)) {
donotquit = 1;
nowrite = 1;
argv++;
argc--;
}
if (argc < 2)
return usage(1);
if (argc > 2)
av_strlcpy(fntemplate, argv[1], sizeof(fntemplate));
av_strlcpy
(fntemplate
, strrchr(argv
[1], '/') + 1, sizeof(fntemplate
));
if (strchr(fntemplate
, '%')) {
fprintf(stderr
, "cannot use filenames containing '%%'\n");
return usage(1);
}
if (strlen(fntemplate
) + sizeof(PKTFILESUFF
) >= sizeof(fntemplate
) - 1) {
fprintf(stderr
, "filename too long\n");
return usage(1);
}
strcat(fntemplate
, PKTFILESUFF
);
printf("FNTEMPLATE: '%s'\n", fntemplate
);
// register all file formats
av_register_all();
err = avformat_open_input(&fctx, argv[1], NULL, NULL);
if (err < 0) {
fprintf(stderr
, "cannot open input: error %d\n", err
);
return 1;
}
err = avformat_find_stream_info(fctx, NULL);
if (err < 0) {
fprintf(stderr
, "avformat_find_stream_info: error %d\n", err
);
return 1;
}
av_init_packet(&pkt);
while ((err = av_read_frame(fctx, &pkt)) >= 0) {
int fd;
snprintf(pktfilename
, sizeof(pktfilename
), fntemplate
, pktnum
,
pkt.stream_index, pkt.pts, pkt.size,
(pkt.flags & AV_PKT_FLAG_KEY) ? 'K' : '_');
printf(PKTFILESUFF
"\n", pktnum
, pkt.
stream_index, pkt.
pts, pkt.
size,
(pkt.flags & AV_PKT_FLAG_KEY) ? 'K' : '_');
if (!nowrite) {
fd = open(pktfilename, O_WRONLY | O_CREAT, 0644);
err = write(fd, pkt.data, pkt.size);
if (err < 0) {
fprintf(stderr
, "write: error %d\n", err
);
return 1;
}
close(fd);
}
av_free_packet(&pkt);
pktnum++;
if (maxpkts && (pktnum >= maxpkts))
break;
}
avformat_close_input(&fctx);
while (donotquit)
av_usleep(60 * 1000000);
return 0;
}