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 <limits.h>
22#include <fcntl.h>
23#include <stdio.h>
24#include <stdlib.h>
25#include <string.h>
26#include <unistd.h>
27#include "libavformat/avformat.h"
28
29#define PKTFILESUFF "_%08"PRId64"_%02d_%010"PRId64"_%06d_%c.bin"
30
31#undef strcat
32
33static int usage(int ret)
34{
35    fprintf(stderr, "dump (up to maxpkts) AVPackets as they are demuxed by libavformat.\n");
36    fprintf(stderr, "each packet is dumped in its own file named like `basename file.ext`_$PKTNUM_$STREAMINDEX_$STAMP_$SIZE_$FLAGS.bin\n");
37    fprintf(stderr, "pktdumper [-nw] file [maxpkts]\n");
38    fprintf(stderr, "-n\twrite No file at all, only demux.\n");
39    fprintf(stderr, "-w\tWait at end of processing instead of quitting.\n");
40    return ret;
41}
42
43int main(int argc, char **argv)
44{
45    char fntemplate[PATH_MAX];
46    char pktfilename[PATH_MAX];
47    AVFormatContext *fctx = NULL;
48    AVPacket pkt;
49    int64_t pktnum = 0;
50    int64_t maxpkts = 0;
51    int donotquit = 0;
52    int nowrite = 0;
53    int err;
54
55    if ((argc > 1) && !strncmp(argv[1], "-", 1)) {
56        if (strchr(argv[1], 'w'))
57            donotquit = 1;
58        if (strchr(argv[1], 'n'))
59            nowrite = 1;
60        argv++;
61        argc--;
62    }
63    if (argc < 2)
64        return usage(1);
65    if (argc > 2)
66        maxpkts = atoi(argv[2]);
67    strncpy(fntemplate, argv[1], PATH_MAX-1);
68    if (strrchr(argv[1], '/'))
69        strncpy(fntemplate, strrchr(argv[1], '/')+1, PATH_MAX-1);
70    if (strrchr(fntemplate, '.'))
71        *strrchr(fntemplate, '.') = '\0';
72    if (strchr(fntemplate, '%')) {
73        fprintf(stderr, "can't use filenames containing '%%'\n");
74        return usage(1);
75    }
76    if (strlen(fntemplate) + sizeof(PKTFILESUFF) >= PATH_MAX-1) {
77        fprintf(stderr, "filename too long\n");
78        return usage(1);
79    }
80    strcat(fntemplate, PKTFILESUFF);
81    printf("FNTEMPLATE: '%s'\n", fntemplate);
82
83    // register all file formats
84    av_register_all();
85
86    err = avformat_open_input(&fctx, argv[1], NULL, NULL);
87    if (err < 0) {
88        fprintf(stderr, "cannot open input: error %d\n", err);
89        return 1;
90    }
91
92    err = avformat_find_stream_info(fctx, NULL);
93    if (err < 0) {
94        fprintf(stderr, "avformat_find_stream_info: error %d\n", err);
95        return 1;
96    }
97
98    av_init_packet(&pkt);
99
100    while ((err = av_read_frame(fctx, &pkt)) >= 0) {
101        int fd;
102        snprintf(pktfilename, PATH_MAX-1, fntemplate, pktnum, pkt.stream_index, pkt.pts, pkt.size, (pkt.flags & AV_PKT_FLAG_KEY)?'K':'_');
103        printf(PKTFILESUFF"\n", pktnum, pkt.stream_index, pkt.pts, pkt.size, (pkt.flags & AV_PKT_FLAG_KEY)?'K':'_');
104        //printf("open(\"%s\")\n", pktfilename);
105        if (!nowrite) {
106            fd = open(pktfilename, O_WRONLY|O_CREAT, 0644);
107            err = write(fd, pkt.data, pkt.size);
108            if (err < 0) {
109                fprintf(stderr, "write: error %d\n", err);
110                return 1;
111            }
112            close(fd);
113        }
114        av_free_packet(&pkt);
115        pktnum++;
116        if (maxpkts && (pktnum >= maxpkts))
117            break;
118    }
119
120    avformat_close_input(&fctx);
121
122    while (donotquit)
123        sleep(60);
124
125    return 0;
126}
127