/* * Copyright (c) 2005 Francois Revol * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include <limits.h> #include <fcntl.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include "libavformat/avformat.h" #define PKTFILESUFF "_%08" PRId64 "_%02d_%010" PRId64 "_%06d_%c.bin" static int usage(int ret) { fprintf(stderr, "dump (up to maxpkts) AVPackets as they are demuxed by libavformat.\n"); fprintf(stderr, "each packet is dumped in its own file named like `basename file.ext`_$PKTNUM_$STREAMINDEX_$STAMP_$SIZE_$FLAGS.bin\n"); fprintf(stderr, "pktdumper [-nw] file [maxpkts]\n"); fprintf(stderr, "-n\twrite No file at all, only demux.\n"); fprintf(stderr, "-w\tWait at end of processing instead of quitting.\n"); return ret; } int main(int argc, char **argv) { char fntemplate[PATH_MAX]; char pktfilename[PATH_MAX]; AVFormatContext *fctx = NULL; AVPacket pkt; int64_t pktnum = 0; int64_t maxpkts = 0; int donotquit = 0; int nowrite = 0; int err; if ((argc > 1) && !strncmp(argv[1], "-", 1)) { if (strchr(argv[1], 'w')) donotquit = 1; if (strchr(argv[1], 'n')) nowrite = 1; argv++; argc--; } if (argc < 2) return usage(1); if (argc > 2) maxpkts = atoi(argv[2]); strncpy(fntemplate, argv[1], PATH_MAX - 1); if (strrchr(argv[1], '/')) strncpy(fntemplate, strrchr(argv[1], '/') + 1, PATH_MAX - 1); if (strrchr(fntemplate, '.')) *strrchr(fntemplate, '.') = '\0'; if (strchr(fntemplate, '%')) { fprintf(stderr, "can't use filenames containing '%%'\n"); return usage(1); } if (strlen(fntemplate) + sizeof(PKTFILESUFF) >= PATH_MAX - 1) { fprintf(stderr, "filename too long\n"); return usage(1); } strcat(fntemplate, PKTFILESUFF); printf("FNTEMPLATE: '%s'\n", fntemplate); // register all file formats av_register_all(); err = avformat_open_input(&fctx, argv[1], NULL, NULL); if (err < 0) { fprintf(stderr, "cannot open input: error %d\n", err); return 1; } err = avformat_find_stream_info(fctx, NULL); if (err < 0) { fprintf(stderr, "avformat_find_stream_info: error %d\n", err); return 1; } av_init_packet(&pkt); while ((err = av_read_frame(fctx, &pkt)) >= 0) { int fd; snprintf(pktfilename, PATH_MAX - 1, fntemplate, pktnum, pkt.stream_index, pkt.pts, pkt.size, (pkt.flags & AV_PKT_FLAG_KEY) ? 'K' : '_'); printf(PKTFILESUFF "\n", pktnum, pkt.stream_index, pkt.pts, pkt.size, (pkt.flags & AV_PKT_FLAG_KEY) ? 'K' : '_'); //printf("open(\"%s\")\n", pktfilename); if (!nowrite) { fd = open(pktfilename, O_WRONLY | O_CREAT, 0644); err = write(fd, pkt.data, pkt.size); if (err < 0) { fprintf(stderr, "write: error %d\n", err); return 1; } close(fd); } av_free_packet(&pkt); pktnum++; if (maxpkts && (pktnum >= maxpkts)) break; } avformat_close_input(&fctx); while (donotquit) usleep(60 * 1000000); return 0; }