mirror of https://git.ffmpeg.org/ffmpeg.git
108 lines
3.2 KiB
C
108 lines
3.2 KiB
C
/*
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* Copyright (c) 2013 Nicolas George
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with FFmpeg; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <unistd.h>
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#include "config.h"
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#if HAVE_UNISTD_H
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#include <unistd.h> /* getopt */
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#endif
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#include "libavformat/avformat.h"
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#include "libavutil/timestamp.h"
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#if !HAVE_GETOPT
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#include "compat/getopt.c"
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#endif
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static void usage(int ret)
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{
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fprintf(ret ? stderr : stdout,
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"Usage: seek_print file [command ...]\n"
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"Commands:\n"
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" read\n"
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" seek:stream:min_ts:ts:max_ts:flags\n"
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);
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exit(ret);
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}
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int main(int argc, char **argv)
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{
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int opt, ret, stream, flags;
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const char *filename;
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AVFormatContext *avf = NULL;
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int64_t min_ts, max_ts, ts;
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AVPacket packet;
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while ((opt = getopt(argc, argv, "h")) != -1) {
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switch (opt) {
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case 'h':
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usage(0);
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default:
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usage(1);
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}
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}
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argc -= optind;
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argv += optind;
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if (!argc)
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usage(1);
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filename = *argv;
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argv++;
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argc--;
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av_register_all();
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if ((ret = avformat_open_input(&avf, filename, NULL, NULL)) < 0) {
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fprintf(stderr, "%s: %s\n", filename, av_err2str(ret));
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return 1;
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}
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if ((ret = avformat_find_stream_info(avf, NULL)) < 0) {
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fprintf(stderr, "%s: could not find codec parameters: %s\n", filename,
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av_err2str(ret));
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return 1;
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}
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for (; argc; argc--, argv++) {
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if (!strcmp(*argv, "read")) {
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ret = av_read_frame(avf, &packet);
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if (ret < 0) {
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printf("read: %d (%s)\n", ret, av_err2str(ret));
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} else {
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AVRational *tb = &avf->streams[packet.stream_index]->time_base;
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printf("read: %d size=%d stream=%d dts=%s (%s) pts=%s (%s)\n",
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ret, packet.size, packet.stream_index,
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av_ts2str(packet.dts), av_ts2timestr(packet.dts, tb),
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av_ts2str(packet.pts), av_ts2timestr(packet.pts, tb));
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av_free_packet(&packet);
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}
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} else if (sscanf(*argv, "seek:%i:%"SCNi64":%"SCNi64":%"SCNi64":%i",
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&stream, &min_ts, &ts, &max_ts, &flags) == 5) {
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ret = avformat_seek_file(avf, stream, min_ts, ts, max_ts, flags);
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printf("seek: %d (%s)\n", ret, av_err2str(ret));
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} else {
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fprintf(stderr, "'%s': unknown command\n", *argv);
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return 1;
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}
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}
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avformat_close_input(&avf);
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return 0;
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}
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