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1 | /* |
2 | * Copyright (c) 2005 Francois Revol | |
3 | * | |
4 | * This file is part of FFmpeg. | |
5 | * | |
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. | |
10 | * | |
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. | |
15 | * | |
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 | |
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 | #include "libavutil/avstring.h" | |
35 | #include "libavutil/time.h" | |
36 | #include "libavformat/avformat.h" | |
37 | ||
38 | #define FILENAME_BUF_SIZE 4096 | |
39 | #define PKTFILESUFF "_%08" PRId64 "_%02d_%010" PRId64 "_%06d_%c.bin" | |
40 | ||
41 | static int usage(int ret) | |
42 | { | |
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"); | |
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, "cannot 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 | if (!nowrite) { | |
117 | fd = open(pktfilename, O_WRONLY | O_CREAT, 0644); | |
118 | err = write(fd, pkt.data, pkt.size); | |
119 | if (err < 0) { | |
120 | fprintf(stderr, "write: error %d\n", err); | |
121 | return 1; | |
122 | } | |
123 | close(fd); | |
124 | } | |
125 | av_free_packet(&pkt); | |
126 | pktnum++; | |
127 | if (maxpkts && (pktnum >= maxpkts)) | |
128 | break; | |
129 | } | |
130 | ||
131 | avformat_close_input(&fctx); | |
132 | ||
133 | while (donotquit) | |
134 | av_usleep(60 * 1000000); | |
135 | ||
136 | return 0; | |
137 | } |