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= ¶ms; 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