Spaces:
Runtime error
Runtime error
File size: 5,180 Bytes
b86f76f |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 |
/*
* 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"
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 = avformat_alloc_context();
int i, ret, stream_id;
int j;
int64_t timestamp;
AVDictionary *format_opts = NULL;
int64_t seekfirst = AV_NOPTS_VALUE;
int firstback=0;
int frame_count = 1;
int duration = 4;
for(i=2; i<argc; i+=2){
if (!strcmp(argv[i], "-seekforw")){
seekfirst = atoi(argv[i+1]);
} else if(!strcmp(argv[i], "-seekback")){
seekfirst = atoi(argv[i+1]);
firstback = 1;
} else if(!strcmp(argv[i], "-frames")){
frame_count = atoi(argv[i+1]);
} else if(!strcmp(argv[i], "-duration")){
duration = atoi(argv[i+1]);
} else if(!strcmp(argv[i], "-fastseek")) {
if (atoi(argv[i+1])) {
ic->flags |= AVFMT_FLAG_FAST_SEEK;
}
} else if(argv[i][0] == '-' && argv[i+1]) {
av_dict_set(&format_opts, argv[i] + 1, argv[i+1], 0);
} else {
argc = 1;
}
}
av_dict_set(&format_opts, "ch_layout", "mono", 0);
av_dict_set(&format_opts, "sample_rate", "22050", 0);
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;
}
if(seekfirst != AV_NOPTS_VALUE){
if(firstback) avformat_seek_file(ic, -1, INT64_MIN, seekfirst, seekfirst, 0);
else avformat_seek_file(ic, -1, seekfirst, seekfirst, INT64_MAX, 0);
}
for(i=0; ; i++){
AVPacket pkt = { 0 };
AVStream *av_uninit(st);
char ts_buf[60];
if(ret>=0){
for(j=0; j<frame_count; j++) {
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_packet_unref(&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) % (duration*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;
}
|