tests/seek_test.c

   1 /*
   2  * Copyright (c) 2003 Fabrice Bellard
   3  * Copyright (c) 2007 Michael Niedermayer
   4  *
   5  * This file is part of FFmpeg.
   6  *
   7  * FFmpeg is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * FFmpeg is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with FFmpeg; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  20  */
  21
  22 #include <stdint.h>
  23 #include <stdlib.h>
  24 #include <stdio.h>
  25
  26 #include "libavutil/common.h"
  27 #include "libavformat/avformat.h"
  28
  29 #undef exit
  30 #undef printf
  31 #undef fprintf
  32
  33 int main(int argc, char **argv)
  34 {
  35     const char *filename;
  36     AVFormatContext *ic;
  37     int i, ret, stream_id;
  38     int64_t timestamp;
  39     AVFormatParameters params, *ap= &params;
  40     memset(ap, 0, sizeof(params));
  41     ap->channels=1;
  42     ap->sample_rate= 22050;
  43
  44     /* initialize libavcodec, and register all codecs and formats */
  45     av_register_all();
  46
  47     if (argc != 2) {
  48         printf("usage: %s input_file\n"
  49                "\n", argv[0]);
  50         exit(1);
  51     }
  52
  53     filename = argv[1];
  54
  55     /* allocate the media context */
  56     ic = avformat_alloc_context();
  57     if (!ic) {
  58         fprintf(stderr, "Memory error\n");
  59         exit(1);
  60     }
  61
  62     ret = av_open_input_file(&ic, filename, NULL, 0, ap);
  63     if (ret < 0) {
  64         fprintf(stderr, "cannot open %s\n", filename);
  65         exit(1);
  66     }
  67
  68     ret = av_find_stream_info(ic);
  69     if (ret < 0) {
  70         fprintf(stderr, "%s: could not find codec parameters\n", filename);
  71         exit(1);
  72     }
  73
  74     for(i=0; ; i++){
  75         AVPacket pkt;
  76         AVStream *av_uninit(st);
  77
  78         memset(&pkt, 0, sizeof(pkt));
  79         if(ret>=0){
  80             ret= av_read_frame(ic, &pkt);
  81             printf("ret:%2d", ret);
  82             if(ret>=0){
  83                 st= ic->streams[pkt.stream_index];
  84                 printf(" st:%2d dts:%f pts:%f pos:%" PRId64 " size:%d flags:%d", pkt.stream_index, pkt.dts*av_q2d(st->time_base), pkt.pts*av_q2d(st->time_base), pkt.pos, pkt.size, pkt.flags);
  85             }
  86             printf("\n");
  87         }
  88
  89         if(i>25) break;
  90
  91         stream_id= (i>>1)%(ic->nb_streams+1) - 1;
  92         timestamp= (i*19362894167LL) % (4*AV_TIME_BASE) - AV_TIME_BASE;
  93         if(stream_id>=0){
  94             st= ic->streams[stream_id];
  95             timestamp= av_rescale_q(timestamp, AV_TIME_BASE_Q, st->time_base);
  96         }
  97         //FIXME fully test the new seek API
  98         if(i&1) ret = avformat_seek_file(ic, stream_id, INT64_MIN, timestamp, timestamp, 0);
  99         else    ret = avformat_seek_file(ic, stream_id, timestamp, timestamp, INT64_MAX, 0);
 100         printf("ret:%2d st:%2d ts:%f flags:%d\n", ret, stream_id, timestamp*(stream_id<0 ? 1.0/AV_TIME_BASE : av_q2d(st->time_base)), i&1);
 101     }
 102
 103     return 0;
 104 }