/*
  * Copyright (c) 2013 Nicolas George
  *
  * 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 "config.h"
 #if HAVE_UNISTD_H
 #include <unistd.h>             /* getopt */
 #endif
 
 #include "libavformat/avformat.h"
 #include "libavutil/timestamp.h"
 
 #if !HAVE_GETOPT
 #include "compat/getopt.c"
 #endif
 
 static void usage(int ret)
 {
     fprintf(ret ? stderr : stdout,
             "Usage: seek_print file [command ...]\n"
             "Commands:\n"
             "    read\n"
             "    seek:stream:min_ts:ts:max_ts:flags\n"
             );
     exit(ret);
 }
 
 int main(int argc, char **argv)
 {
     int opt, ret, stream, flags;
     const char *filename;
     AVFormatContext *avf = NULL;
     int64_t min_ts, max_ts, ts;
     AVPacket packet;
 
     while ((opt = getopt(argc, argv, "h")) != -1) {
         switch (opt) {
         case 'h':
             usage(0);
         default:
             usage(1);
         }
     }
     argc -= optind;
     argv += optind;
     if (!argc)
         usage(1);
     filename = *argv;
     argv++;
     argc--;
 
     av_register_all();
     if ((ret = avformat_open_input(&avf, filename, NULL, NULL)) < 0) {
         fprintf(stderr, "%s: %s\n", filename, av_err2str(ret));
         return 1;
     }
     if ((ret = avformat_find_stream_info(avf, NULL)) < 0) {
         fprintf(stderr, "%s: could not find codec parameters: %s\n", filename,
                 av_err2str(ret));
         return 1;
     }
 
     for (; argc; argc--, argv++) {
         if (!strcmp(*argv, "read")) {
             ret = av_read_frame(avf, &packet);
             if (ret < 0) {
                 printf("read: %d (%s)\n", ret, av_err2str(ret));
             } else {
                 AVRational *tb = &avf->streams[packet.stream_index]->time_base;
                 printf("read: %d size=%d stream=%d dts=%s (%s) pts=%s (%s)\n",
                        ret, packet.size, packet.stream_index,
                        av_ts2str(packet.dts), av_ts2timestr(packet.dts, tb),
                        av_ts2str(packet.pts), av_ts2timestr(packet.pts, tb));
                 av_free_packet(&packet);
             }

         } else if (sscanf(*argv, "seek:%i:%"SCNi64":%"SCNi64":%"SCNi64":%i",

                    &stream, &min_ts, &ts, &max_ts, &flags) == 5) {
             ret = avformat_seek_file(avf, stream, min_ts, ts, max_ts, flags);
             printf("seek: %d (%s)\n", ret, av_err2str(ret));
         } else {
             fprintf(stderr, "'%s': unknown command\n", *argv);
             return 1;
         }
     }
 
     avformat_close_input(&avf);
 
     return 0;
 }