2 * Copyright (c) 2005 Francois Revol
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
34 #include "libavutil/avstring.h"
35 #include "libavutil/time.h"
36 #include "libavformat/avformat.h"
38 #define FILENAME_BUF_SIZE 4096
39 #define PKTFILESUFF "_%08" PRId64 "_%02d_%010" PRId64 "_%06d_%c.bin"
41 static int usage(int ret)
43 fprintf(stderr, "Dump (up to maxpkts) AVPackets as they are demuxed by libavformat.\n");
44 fprintf(stderr, "Each packet is dumped in its own file named like\n");
45 fprintf(stderr, "$(basename file.ext)_$PKTNUM_$STREAMINDEX_$STAMP_$SIZE_$FLAGS.bin\n");
46 fprintf(stderr, "pktdumper [-nw] file [maxpkts]\n");
47 fprintf(stderr, "-n\twrite No file at all, only demux.\n");
48 fprintf(stderr, "-w\tWait at end of processing instead of quitting.\n");
52 int main(int argc, char **argv)
54 char fntemplate[FILENAME_BUF_SIZE];
55 char pktfilename[FILENAME_BUF_SIZE];
56 AVFormatContext *fctx = NULL;
64 if ((argc > 1) && !strncmp(argv[1], "-", 1)) {
65 if (strchr(argv[1], 'w'))
67 if (strchr(argv[1], 'n'))
75 maxpkts = atoi(argv[2]);
76 av_strlcpy(fntemplate, argv[1], sizeof(fntemplate));
77 if (strrchr(argv[1], '/'))
78 av_strlcpy(fntemplate, strrchr(argv[1], '/') + 1, sizeof(fntemplate));
79 if (strrchr(fntemplate, '.'))
80 *strrchr(fntemplate, '.') = '\0';
81 if (strchr(fntemplate, '%')) {
82 fprintf(stderr, "cannot use filenames containing '%%'\n");
85 if (strlen(fntemplate) + sizeof(PKTFILESUFF) >= sizeof(fntemplate) - 1) {
86 fprintf(stderr, "filename too long\n");
89 strcat(fntemplate, PKTFILESUFF);
90 printf("FNTEMPLATE: '%s'\n", fntemplate);
92 err = avformat_open_input(&fctx, argv[1], NULL, NULL);
94 fprintf(stderr, "cannot open input: error %d\n", err);
98 err = avformat_find_stream_info(fctx, NULL);
100 fprintf(stderr, "avformat_find_stream_info: error %d\n", err);
104 av_init_packet(&pkt);
106 while ((err = av_read_frame(fctx, &pkt)) >= 0) {
108 snprintf(pktfilename, sizeof(pktfilename), fntemplate, pktnum,
109 pkt.stream_index, pkt.pts, pkt.size,
110 (pkt.flags & AV_PKT_FLAG_KEY) ? 'K' : '_');
111 printf(PKTFILESUFF "\n", pktnum, pkt.stream_index, pkt.pts, pkt.size,
112 (pkt.flags & AV_PKT_FLAG_KEY) ? 'K' : '_');
114 fd = open(pktfilename, O_WRONLY | O_CREAT, 0644);
115 err = write(fd, pkt.data, pkt.size);
117 fprintf(stderr, "write: error %d\n", err);
122 av_packet_unref(&pkt);
124 if (maxpkts && (pktnum >= maxpkts))
128 avformat_close_input(&fctx);
131 av_usleep(60 * 1000000);