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/*
* Copyright (c) 2012 Martin Storsjo
*
* This file is part of Libav.
*
* Libav 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.
*
* Libav 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 Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdio.h>
#include <stdlib.h>
#include "libavutil/time.h"
#include "libavformat/avformat.h"
static int usage(const char *argv0, int ret)
{
fprintf(stderr, "%s [-b bytespersec] [-d duration] input_url output_url\n", argv0);
return ret;
}
int main(int argc, char **argv)
{
int bps = 0, duration = 0, ret, i;
const char *input_url = NULL, *output_url = NULL;
int64_t stream_pos = 0;
int64_t start_time;
char errbuf[50];
AVIOContext *input, *output;
av_register_all();
avformat_network_init();
for (i = 1; i < argc; i++) {
if (!strcmp(argv[i], "-b") && i + 1 < argc) {
bps = atoi(argv[i + 1]);
i++;
} else if (!strcmp(argv[i], "-d") && i + 1 < argc) {
duration = atoi(argv[i + 1]);
i++;
} else if (!input_url) {
input_url = argv[i];
} else if (!output_url) {
output_url = argv[i];
} else {
return usage(argv[0], 1);
}
}
if (!output_url)
return usage(argv[0], 1);
ret = avio_open2(&input, input_url, AVIO_FLAG_READ, NULL, NULL);
if (ret) {
av_strerror(ret, errbuf, sizeof(errbuf));
fprintf(stderr, "Unable to open %s: %s\n", input_url, errbuf);
return 1;
}
if (duration && !bps) {
int64_t size = avio_size(input);
if (size < 0) {
av_strerror(ret, errbuf, sizeof(errbuf));
fprintf(stderr, "Unable to get size of %s: %s\n", input_url, errbuf);
goto fail;
}
bps = size / duration;
}
ret = avio_open2(&output, output_url, AVIO_FLAG_WRITE, NULL, NULL);
if (ret) {
av_strerror(ret, errbuf, sizeof(errbuf));
fprintf(stderr, "Unable to open %s: %s\n", output_url, errbuf);
goto fail;
}
start_time = av_gettime();
while (1) {
uint8_t buf[1024];
int n;
n = avio_read(input, buf, sizeof(buf));
if (n <= 0)
break;
avio_write(output, buf, n);
stream_pos += n;
if (bps) {
avio_flush(output);
while ((av_gettime() - start_time) * bps / AV_TIME_BASE < stream_pos)
av_usleep(50 * 1000);
}
}
avio_flush(output);
avio_close(output);
fail:
avio_close(input);
avformat_network_deinit();
return ret ? 1 : 0;
}
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