| /* |
| * Copyright (c) 2003 Fabrice Bellard |
| * Copyright (c) 2007 Michael Niedermayer |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include <stdint.h> |
| #include <stdlib.h> |
| #include <stdio.h> |
| |
| #include "libavutil/common.h" |
| #include "libavformat/avformat.h" |
| |
| #undef exit |
| |
| int main(int argc, char **argv) |
| { |
| const char *filename; |
| AVFormatContext *ic; |
| int i, ret, stream_id; |
| int64_t timestamp; |
| AVFormatParameters params, *ap= ¶ms; |
| memset(ap, 0, sizeof(params)); |
| ap->channels=1; |
| ap->sample_rate= 22050; |
| |
| /* initialize libavcodec, and register all codecs and formats */ |
| av_register_all(); |
| |
| if (argc != 2) { |
| printf("usage: %s input_file\n" |
| "\n", argv[0]); |
| exit(1); |
| } |
| |
| filename = argv[1]; |
| |
| /* allocate the media context */ |
| ic = avformat_alloc_context(); |
| if (!ic) { |
| fprintf(stderr, "Memory error\n"); |
| exit(1); |
| } |
| |
| ret = av_open_input_file(&ic, filename, NULL, 0, ap); |
| if (ret < 0) { |
| fprintf(stderr, "cannot open %s\n", filename); |
| exit(1); |
| } |
| |
| ret = av_find_stream_info(ic); |
| if (ret < 0) { |
| fprintf(stderr, "%s: could not find codec parameters\n", filename); |
| exit(1); |
| } |
| |
| for(i=0; ; i++){ |
| AVPacket pkt; |
| AVStream *av_uninit(st); |
| |
| memset(&pkt, 0, sizeof(pkt)); |
| if(ret>=0){ |
| ret= av_read_frame(ic, &pkt); |
| printf("ret:%2d", ret); |
| if(ret>=0){ |
| st= ic->streams[pkt.stream_index]; |
| 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); |
| } |
| printf("\n"); |
| } |
| |
| if(i>25) break; |
| |
| stream_id= (i>>1)%(ic->nb_streams+1) - 1; |
| timestamp= (i*19362894167LL) % (4*AV_TIME_BASE) - AV_TIME_BASE; |
| if(stream_id>=0){ |
| st= ic->streams[stream_id]; |
| timestamp= av_rescale_q(timestamp, AV_TIME_BASE_Q, st->time_base); |
| } |
| //FIXME fully test the new seek API |
| if(i&1) ret = avformat_seek_file(ic, stream_id, INT64_MIN, timestamp, timestamp, 0); |
| else ret = avformat_seek_file(ic, stream_id, timestamp, timestamp, INT64_MAX, 0); |
| 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); |
| } |
| |
| return 0; |
| } |