| 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 | } |