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 #include <string.h>
  26
  27 #include "libavutil/common.h"
  28 #include "libavformat/avformat.h"
  29
  30 #undef exit
  31 #undef printf
  32 #undef fprintf
  33
  34 static char buffer[20];
  35
  36 static const char *ret_str(int v)
  37 {
  38     switch (v) {
  39     case AVERROR_EOF:     return "-EOF";
  40     case AVERROR(EIO):    return "-EIO";
  41     case AVERROR(ENOMEM): return "-ENOMEM";
  42     case AVERROR(EINVAL): return "-EINVAL";
  43     default:
  44         snprintf(buffer, sizeof(buffer), "%2d", v);
  45         return buffer;
  46     }
  47 }
  48
  49 static void ts_str(char buffer[60], int64_t ts, AVRational base)
  50 {
  51     double tsval;
  52     if (ts == AV_NOPTS_VALUE) {
  53         strcpy(buffer, " NOPTS   ");
  54         return;
  55     }
  56     tsval = ts * av_q2d(base);
  57     snprintf(buffer, 60, "%9f", tsval);
  58 }
  59
  60 int main(int argc, char **argv)
  61 {
  62     const char *filename;
  63     AVFormatContext *ic;
  64     int i, ret, stream_id;
  65     int64_t timestamp;
  66     AVFormatParameters params, *ap= &params;
  67     memset(ap, 0, sizeof(params));
  68     ap->channels=1;
  69     ap->sample_rate= 22050;
  70
  71     /* initialize libavcodec, and register all codecs and formats */
  72     av_register_all();
  73
  74     if (argc != 2) {
  75         printf("usage: %s input_file\n"
  76                "\n", argv[0]);
  77         exit(1);
  78     }
  79
  80     filename = argv[1];
  81
  82     /* allocate the media context */
  83     ic = avformat_alloc_context();
  84     if (!ic) {
  85         fprintf(stderr, "Memory error\n");
  86         exit(1);
  87     }
  88
  89     ret = av_open_input_file(&ic, filename, NULL, 0, ap);
  90     if (ret < 0) {
  91         fprintf(stderr, "cannot open %s\n", filename);
  92         exit(1);
  93     }
  94
  95     ret = av_find_stream_info(ic);
  96     if (ret < 0) {
  97         fprintf(stderr, "%s: could not find codec parameters\n", filename);
  98         exit(1);
  99     }
 100
 101     for(i=0; ; i++){
 102         AVPacket pkt;
 103         AVStream *av_uninit(st);
 104         char ts_buf[60];
 105
 106         memset(&pkt, 0, sizeof(pkt));
 107         if(ret>=0){
 108             ret= av_read_frame(ic, &pkt);
 109             if(ret>=0){
 110                 char dts_buf[60];
 111                 st= ic->streams[pkt.stream_index];
 112                 ts_str(dts_buf, pkt.dts, st->time_base);
 113                 ts_str(ts_buf,  pkt.pts, st->time_base);
 114                 printf("ret:%-10s st:%2d flags:%d dts:%s pts:%s pos:%7" PRId64 " size:%6d", ret_str(ret), pkt.stream_index, pkt.flags, dts_buf, ts_buf, pkt.pos, pkt.size);
 115             } else
 116                 printf("ret:%s", ret_str(ret)); // necessary to avoid trailing whitespace
 117             printf("\n");
 118         }
 119
 120         if(i>25) break;
 121
 122         stream_id= (i>>1)%(ic->nb_streams+1) - 1;
 123         timestamp= (i*19362894167LL) % (4*AV_TIME_BASE) - AV_TIME_BASE;
 124         if(stream_id>=0){
 125             st= ic->streams[stream_id];
 126             timestamp= av_rescale_q(timestamp, AV_TIME_BASE_Q, st->time_base);
 127         }
 128         //FIXME fully test the new seek API
 129         if(i&1) ret = avformat_seek_file(ic, stream_id, INT64_MIN, timestamp, timestamp, 0);
 130         else    ret = avformat_seek_file(ic, stream_id, timestamp, timestamp, INT64_MAX, 0);
 131         ts_str(ts_buf, timestamp, stream_id < 0 ? AV_TIME_BASE_Q : st->time_base);
 132         printf("ret:%-10s st:%2d flags:%d  ts:%s\n", ret_str(ret), stream_id, i&1, ts_buf);
 133     }
 134
 135     return 0;
 136 }