087ac5b2dc9d1fa2260689fe46b7557d592106bb
[libav.git] / tools / pktdumper.c
1 /*
2 * Copyright (c) 2005 Francois Revol
3 *
4 * This file is part of Libav.
5 *
6 * Libav 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.
10 *
11 * Libav 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.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with Libav; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 #include "config.h"
22 #include <limits.h>
23 #include <fcntl.h>
24 #include <stdio.h>
25 #include <stdlib.h>
26 #include <string.h>
27 #if HAVE_UNISTD_H
28 #include <unistd.h>
29 #endif
30 #if HAVE_IO_H
31 #include <io.h>
32 #endif
33
34 #define FILENAME_BUF_SIZE 4096
35
36 #include "libavutil/avstring.h"
37 #include "libavutil/time.h"
38 #include "libavformat/avformat.h"
39
40 #define PKTFILESUFF "_%08" PRId64 "_%02d_%010" PRId64 "_%06d_%c.bin"
41
42 static int usage(int ret)
43 {
44 fprintf(stderr, "dump (up to maxpkts) AVPackets as they are demuxed by libavformat.\n");
45 fprintf(stderr, "each packet is dumped in its own file named like `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");
49 return ret;
50 }
51
52 int main(int argc, char **argv)
53 {
54 char fntemplate[FILENAME_BUF_SIZE];
55 char pktfilename[FILENAME_BUF_SIZE];
56 AVFormatContext *fctx = NULL;
57 AVPacket pkt;
58 int64_t pktnum = 0;
59 int64_t maxpkts = 0;
60 int donotquit = 0;
61 int nowrite = 0;
62 int err;
63
64 if ((argc > 1) && !strncmp(argv[1], "-", 1)) {
65 if (strchr(argv[1], 'w'))
66 donotquit = 1;
67 if (strchr(argv[1], 'n'))
68 nowrite = 1;
69 argv++;
70 argc--;
71 }
72 if (argc < 2)
73 return usage(1);
74 if (argc > 2)
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, "can't use filenames containing '%%'\n");
83 return usage(1);
84 }
85 if (strlen(fntemplate) + sizeof(PKTFILESUFF) >= sizeof(fntemplate) - 1) {
86 fprintf(stderr, "filename too long\n");
87 return usage(1);
88 }
89 strcat(fntemplate, PKTFILESUFF);
90 printf("FNTEMPLATE: '%s'\n", fntemplate);
91
92 // register all file formats
93 av_register_all();
94
95 err = avformat_open_input(&fctx, argv[1], NULL, NULL);
96 if (err < 0) {
97 fprintf(stderr, "cannot open input: error %d\n", err);
98 return 1;
99 }
100
101 err = avformat_find_stream_info(fctx, NULL);
102 if (err < 0) {
103 fprintf(stderr, "avformat_find_stream_info: error %d\n", err);
104 return 1;
105 }
106
107 av_init_packet(&pkt);
108
109 while ((err = av_read_frame(fctx, &pkt)) >= 0) {
110 int fd;
111 snprintf(pktfilename, sizeof(pktfilename), fntemplate, pktnum,
112 pkt.stream_index, pkt.pts, pkt.size,
113 (pkt.flags & AV_PKT_FLAG_KEY) ? 'K' : '_');
114 printf(PKTFILESUFF "\n", pktnum, pkt.stream_index, pkt.pts, pkt.size,
115 (pkt.flags & AV_PKT_FLAG_KEY) ? 'K' : '_');
116 //printf("open(\"%s\")\n", pktfilename);
117 if (!nowrite) {
118 fd = open(pktfilename, O_WRONLY | O_CREAT, 0644);
119 err = write(fd, pkt.data, pkt.size);
120 if (err < 0) {
121 fprintf(stderr, "write: error %d\n", err);
122 return 1;
123 }
124 close(fd);
125 }
126 av_free_packet(&pkt);
127 pktnum++;
128 if (maxpkts && (pktnum >= maxpkts))
129 break;
130 }
131
132 avformat_close_input(&fctx);
133
134 while (donotquit)
135 av_usleep(60 * 1000000);
136
137 return 0;
138 }