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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
*/ |
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#include <stdint.h> |
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#include <stdlib.h>
#include <stdio.h> |
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#include <string.h> |
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|
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#include "libavutil/common.h" |
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#include "libavformat/avformat.h" |
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|
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#undef exit |
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#undef printf
#undef fprintf |
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|
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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;
}
}
|
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static void ts_str(char buffer[60], int64_t ts, AVRational base)
{
double tsval;
if (ts == AV_NOPTS_VALUE) {
strcpy(buffer, " NOPTS ");
return;
}
tsval = ts * av_q2d(base);
snprintf(buffer, 60, "%9f", tsval);
}
|
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int main(int argc, char **argv)
{
const char *filename; |
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AVFormatContext *ic = NULL; |
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int i, ret, stream_id;
int64_t timestamp; |
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AVFormatParameters params, *ap= ¶ms;
memset(ap, 0, sizeof(params));
ap->channels=1;
ap->sample_rate= 22050; |
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/* 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];
|
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ret = av_open_input_file(&ic, filename, NULL, 0, ap); |
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if (ret < 0) { |
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fprintf(stderr, "cannot open %s\n", filename); |
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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; |
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AVStream *av_uninit(st); |
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char ts_buf[60]; |
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memset(&pkt, 0, sizeof(pkt)); |
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if(ret>=0){ |
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ret= av_read_frame(ic, &pkt);
if(ret>=0){ |
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char dts_buf[60]; |
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st= ic->streams[pkt.stream_index]; |
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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); |
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av_free_packet(&pkt); |
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} else
printf("ret:%s", ret_str(ret)); // necessary to avoid trailing whitespace |
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printf("\n"); |
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} |
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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);
} |
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//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); |
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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); |
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}
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av_close_input_file(ic);
|
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return 0;
} |