yading@11: /*
yading@11:  * Copyright (c) 2005 Francois Revol
yading@11:  *
yading@11:  * This file is part of FFmpeg.
yading@11:  *
yading@11:  * FFmpeg is free software; you can redistribute it and/or
yading@11:  * modify it under the terms of the GNU Lesser General Public
yading@11:  * License as published by the Free Software Foundation; either
yading@11:  * version 2.1 of the License, or (at your option) any later version.
yading@11:  *
yading@11:  * FFmpeg is distributed in the hope that it will be useful,
yading@11:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@11:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@11:  * Lesser General Public License for more details.
yading@11:  *
yading@11:  * You should have received a copy of the GNU Lesser General Public
yading@11:  * License along with FFmpeg; if not, write to the Free Software
yading@11:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@11:  */
yading@11: 
yading@11: #include "config.h"
yading@11: #include <limits.h>
yading@11: #include <fcntl.h>
yading@11: #include <stdio.h>
yading@11: #include <stdlib.h>
yading@11: #include <string.h>
yading@11: #if HAVE_UNISTD_H
yading@11: #include <unistd.h>
yading@11: #endif
yading@11: #if HAVE_IO_H
yading@11: #include <io.h>
yading@11: #endif
yading@11: 
yading@11: #define FILENAME_BUF_SIZE 4096
yading@11: 
yading@11: #include "libavutil/avstring.h"
yading@11: #include "libavutil/time.h"
yading@11: #include "libavformat/avformat.h"
yading@11: 
yading@11: #define PKTFILESUFF "_%08" PRId64 "_%02d_%010" PRId64 "_%06d_%c.bin"
yading@11: 
yading@11: static int usage(int ret)
yading@11: {
yading@11:     fprintf(stderr, "dump (up to maxpkts) AVPackets as they are demuxed by libavformat.\n");
yading@11:     fprintf(stderr, "each packet is dumped in its own file named like `basename file.ext`_$PKTNUM_$STREAMINDEX_$STAMP_$SIZE_$FLAGS.bin\n");
yading@11:     fprintf(stderr, "pktdumper [-nw] file [maxpkts]\n");
yading@11:     fprintf(stderr, "-n\twrite No file at all, only demux.\n");
yading@11:     fprintf(stderr, "-w\tWait at end of processing instead of quitting.\n");
yading@11:     return ret;
yading@11: }
yading@11: 
yading@11: int main(int argc, char **argv)
yading@11: {
yading@11:     char fntemplate[FILENAME_BUF_SIZE];
yading@11:     char pktfilename[FILENAME_BUF_SIZE];
yading@11:     AVFormatContext *fctx = NULL;
yading@11:     AVPacket pkt;
yading@11:     int64_t pktnum  = 0;
yading@11:     int64_t maxpkts = 0;
yading@11:     int donotquit   = 0;
yading@11:     int nowrite     = 0;
yading@11:     int err;
yading@11: 
yading@11:     if ((argc > 1) && !strncmp(argv[1], "-", 1)) {
yading@11:         if (strchr(argv[1], 'w'))
yading@11:             donotquit = 1;
yading@11:         if (strchr(argv[1], 'n'))
yading@11:             nowrite = 1;
yading@11:         argv++;
yading@11:         argc--;
yading@11:     }
yading@11:     if (argc < 2)
yading@11:         return usage(1);
yading@11:     if (argc > 2)
yading@11:         maxpkts = atoi(argv[2]);
yading@11:     av_strlcpy(fntemplate, argv[1], sizeof(fntemplate));
yading@11:     if (strrchr(argv[1], '/'))
yading@11:         av_strlcpy(fntemplate, strrchr(argv[1], '/') + 1, sizeof(fntemplate));
yading@11:     if (strrchr(fntemplate, '.'))
yading@11:         *strrchr(fntemplate, '.') = '\0';
yading@11:     if (strchr(fntemplate, '%')) {
yading@11:         fprintf(stderr, "can't use filenames containing '%%'\n");
yading@11:         return usage(1);
yading@11:     }
yading@11:     if (strlen(fntemplate) + sizeof(PKTFILESUFF) >= sizeof(fntemplate) - 1) {
yading@11:         fprintf(stderr, "filename too long\n");
yading@11:         return usage(1);
yading@11:     }
yading@11:     strcat(fntemplate, PKTFILESUFF);
yading@11:     printf("FNTEMPLATE: '%s'\n", fntemplate);
yading@11: 
yading@11:     // register all file formats
yading@11:     av_register_all();
yading@11: 
yading@11:     err = avformat_open_input(&fctx, argv[1], NULL, NULL);
yading@11:     if (err < 0) {
yading@11:         fprintf(stderr, "cannot open input: error %d\n", err);
yading@11:         return 1;
yading@11:     }
yading@11: 
yading@11:     err = avformat_find_stream_info(fctx, NULL);
yading@11:     if (err < 0) {
yading@11:         fprintf(stderr, "avformat_find_stream_info: error %d\n", err);
yading@11:         return 1;
yading@11:     }
yading@11: 
yading@11:     av_init_packet(&pkt);
yading@11: 
yading@11:     while ((err = av_read_frame(fctx, &pkt)) >= 0) {
yading@11:         int fd;
yading@11:         snprintf(pktfilename, sizeof(pktfilename), fntemplate, pktnum,
yading@11:                  pkt.stream_index, pkt.pts, pkt.size,
yading@11:                  (pkt.flags & AV_PKT_FLAG_KEY) ? 'K' : '_');
yading@11:         printf(PKTFILESUFF "\n", pktnum, pkt.stream_index, pkt.pts, pkt.size,
yading@11:                (pkt.flags & AV_PKT_FLAG_KEY) ? 'K' : '_');
yading@11:         if (!nowrite) {
yading@11:             fd  = open(pktfilename, O_WRONLY | O_CREAT, 0644);
yading@11:             err = write(fd, pkt.data, pkt.size);
yading@11:             if (err < 0) {
yading@11:                 fprintf(stderr, "write: error %d\n", err);
yading@11:                 return 1;
yading@11:             }
yading@11:             close(fd);
yading@11:         }
yading@11:         av_free_packet(&pkt);
yading@11:         pktnum++;
yading@11:         if (maxpkts && (pktnum >= maxpkts))
yading@11:             break;
yading@11:     }
yading@11: 
yading@11:     avformat_close_input(&fctx);
yading@11: 
yading@11:     while (donotquit)
yading@11:         av_usleep(60 * 1000000);
yading@11: 
yading@11:     return 0;
yading@11: }