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
34static char buffer[20];
35
36static 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
49static 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
60int main(int argc, char **argv)
61{
62    const char *filename;
63    AVFormatContext *ic = NULL;
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    ret = av_open_input_file(&ic, filename, NULL, 0, ap);
83    if (ret < 0) {
84        fprintf(stderr, "cannot open %s\n", filename);
85        exit(1);
86    }
87
88    ret = av_find_stream_info(ic);
89    if (ret < 0) {
90        fprintf(stderr, "%s: could not find codec parameters\n", filename);
91        exit(1);
92    }
93
94    for(i=0; ; i++){
95        AVPacket pkt;
96        AVStream *av_uninit(st);
97        char ts_buf[60];
98
99        memset(&pkt, 0, sizeof(pkt));
100        if(ret>=0){
101            ret= av_read_frame(ic, &pkt);
102            if(ret>=0){
103                char dts_buf[60];
104                st= ic->streams[pkt.stream_index];
105                ts_str(dts_buf, pkt.dts, st->time_base);
106                ts_str(ts_buf,  pkt.pts, st->time_base);
107                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);
108                av_free_packet(&pkt);
109            } else
110                printf("ret:%s", ret_str(ret)); // necessary to avoid trailing whitespace
111            printf("\n");
112        }
113
114        if(i>25) break;
115
116        stream_id= (i>>1)%(ic->nb_streams+1) - 1;
117        timestamp= (i*19362894167LL) % (4*AV_TIME_BASE) - AV_TIME_BASE;
118        if(stream_id>=0){
119            st= ic->streams[stream_id];
120            timestamp= av_rescale_q(timestamp, AV_TIME_BASE_Q, st->time_base);
121        }
122        //FIXME fully test the new seek API
123        if(i&1) ret = avformat_seek_file(ic, stream_id, INT64_MIN, timestamp, timestamp, 0);
124        else    ret = avformat_seek_file(ic, stream_id, timestamp, timestamp, INT64_MAX, 0);
125        ts_str(ts_buf, timestamp, stream_id < 0 ? AV_TIME_BASE_Q : st->time_base);
126        printf("ret:%-10s st:%2d flags:%d  ts:%s\n", ret_str(ret), stream_id, i&1, ts_buf);
127    }
128
129    av_close_input_file(ic);
130
131    return 0;
132}
133