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- /*
- * 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 <string.h>
- #include "libavutil/common.h"
- #include "libavutil/mathematics.h"
- #include "libavformat/avformat.h"
- #undef printf
- #undef fprintf
- static char buffer[20];
- static const char *ret_str(int v)
- {
- switch (v) {
- case AVERROR_EOF: return "-EOF";
- case AVERROR(EIO): return "-EIO";
- case AVERROR(ENOMEM): return "-ENOMEM";
- case AVERROR(EINVAL): return "-EINVAL";
- default:
- snprintf(buffer, sizeof(buffer), "%2d", v);
- return buffer;
- }
- }
- static void ts_str(char buffer[60], int64_t ts, AVRational base)
- {
- if (ts == AV_NOPTS_VALUE) {
- strcpy(buffer, " NOPTS ");
- return;
- }
- ts= av_rescale_q(ts, base, (AVRational){1, 1000000});
- snprintf(buffer, 60, "%c%"PRId64".%06"PRId64"", ts<0 ? '-' : ' ', FFABS(ts)/1000000, FFABS(ts)%1000000);
- }
- int main(int argc, char **argv)
- {
- const char *filename;
- AVFormatContext *ic = NULL;
- int i, ret, stream_id;
- int64_t timestamp;
- AVDictionary *format_opts = NULL;
- av_dict_set(&format_opts, "channels", "1", 0);
- av_dict_set(&format_opts, "sample_rate", "22050", 0);
- /* initialize libavcodec, and register all codecs and formats */
- av_register_all();
- if (argc != 2) {
- printf("usage: %s input_file\n"
- "\n", argv[0]);
- return 1;
- }
- filename = argv[1];
- ret = avformat_open_input(&ic, filename, NULL, &format_opts);
- av_dict_free(&format_opts);
- if (ret < 0) {
- fprintf(stderr, "cannot open %s\n", filename);
- return 1;
- }
- ret = avformat_find_stream_info(ic, NULL);
- if (ret < 0) {
- fprintf(stderr, "%s: could not find codec parameters\n", filename);
- return 1;
- }
- for(i=0; ; i++){
- AVPacket pkt;
- AVStream *av_uninit(st);
- char ts_buf[60];
- memset(&pkt, 0, sizeof(pkt));
- if(ret>=0){
- ret= av_read_frame(ic, &pkt);
- if(ret>=0){
- char dts_buf[60];
- st= ic->streams[pkt.stream_index];
- ts_str(dts_buf, pkt.dts, st->time_base);
- ts_str(ts_buf, pkt.pts, st->time_base);
- 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);
- av_free_packet(&pkt);
- } else
- printf("ret:%s", ret_str(ret)); // necessary to avoid trailing whitespace
- 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);
- ts_str(ts_buf, timestamp, stream_id < 0 ? AV_TIME_BASE_Q : st->time_base);
- printf("ret:%-10s st:%2d flags:%d ts:%s\n", ret_str(ret), stream_id, i&1, ts_buf);
- }
- avformat_close_input(&ic);
- return 0;
- }
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