ensure vp56_decode_frame always return unchanged buf_size
[libav.git] / tests / seek_test.c
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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#include <stdlib.h>
22#include <stdio.h>
23
24#include "avformat.h"
25
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26#undef exit
27
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28int main(int argc, char **argv)
29{
30 const char *filename;
31 AVFormatContext *ic;
32 int i, ret, stream_id;
33 int64_t timestamp;
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34 AVFormatParameters params, *ap= &params;
35 memset(ap, 0, sizeof(params));
36 ap->channels=1;
37 ap->sample_rate= 22050;
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38
39 /* initialize libavcodec, and register all codecs and formats */
40 av_register_all();
41
42 if (argc != 2) {
43 printf("usage: %s input_file\n"
44 "\n", argv[0]);
45 exit(1);
46 }
47
48 filename = argv[1];
49
50 /* allocate the media context */
51 ic = av_alloc_format_context();
52 if (!ic) {
53 fprintf(stderr, "Memory error\n");
54 exit(1);
55 }
56
aba29e6f 57 ret = av_open_input_file(&ic, filename, NULL, 0, ap);
f97b7e66 58 if (ret < 0) {
755bfeab 59 fprintf(stderr, "cannot open %s\n", filename);
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60 exit(1);
61 }
62
63 ret = av_find_stream_info(ic);
64 if (ret < 0) {
65 fprintf(stderr, "%s: could not find codec parameters\n", filename);
66 exit(1);
67 }
68
69 for(i=0; ; i++){
70 AVPacket pkt;
71 AVStream *st;
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72
73 memset(&pkt, 0, sizeof(pkt));
b929eb50 74 if(ret>=0){
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75 ret= av_read_frame(ic, &pkt);
76 printf("ret:%2d", ret);
77 if(ret>=0){
78 st= ic->streams[pkt.stream_index];
99e8b22d 79 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);
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80 }
81 printf("\n");
b929eb50 82 }
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83
84 if(i>25) break;
85
86 stream_id= (i>>1)%(ic->nb_streams+1) - 1;
87 timestamp= (i*19362894167LL) % (4*AV_TIME_BASE) - AV_TIME_BASE;
88 if(stream_id>=0){
89 st= ic->streams[stream_id];
90 timestamp= av_rescale_q(timestamp, AV_TIME_BASE_Q, st->time_base);
91 }
92 ret = av_seek_frame(ic, stream_id, timestamp, (i&1)*AVSEEK_FLAG_BACKWARD);
93 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);
94 }
95
96 return 0;
97}