mirror of https://git.ffmpeg.org/ffmpeg.git
74 lines
1.9 KiB
C
74 lines
1.9 KiB
C
|
/*
|
||
|
|
* MD5 encoder (for codec/format testing)
|
||
|
|
* Copyright (c) 2009 Reimar Döffinger, based on crcenc (c) 2002 Fabrice Bellard
|
||
|
|
*
|
||
|
|
* 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 "libavutil/md5.h"
|
||
|
|
#include "avformat.h"
|
||
|
|
|
||
|
|
#define PRIVSIZE 512
|
||
|
|
|
||
|
|
static int write_header(struct AVFormatContext *s)
|
||
|
|
{
|
||
|
|
if (PRIVSIZE < av_md5_size) {
|
||
|
|
av_log(s, AV_LOG_ERROR, "Insuffient size for md5 context\n");
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
av_md5_init(s->priv_data);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int write_packet(struct AVFormatContext *s, AVPacket *pkt)
|
||
|
|
{
|
||
|
|
av_md5_update(s->priv_data, pkt->data, pkt->size);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int write_trailer(struct AVFormatContext *s)
|
||
|
|
{
|
||
|
|
uint8_t md5[16];
|
||
|
|
char buf[64] = "MD5=";
|
||
|
|
int i, offset = strlen(buf);
|
||
|
|
|
||
|
|
av_md5_final(s->priv_data, md5);
|
||
|
|
for (i = 0; i < sizeof(md5); i++) {
|
||
|
|
snprintf(buf + offset, 3, "%02"PRIx8, md5[i]);
|
||
|
|
offset += 2;
|
||
|
|
}
|
||
|
|
buf[offset] = '\n';
|
||
|
|
buf[offset+1] = 0;
|
||
|
|
|
||
|
|
put_buffer(s->pb, buf, strlen(buf));
|
||
|
|
put_flush_packet(s->pb);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
AVOutputFormat md5_muxer = {
|
||
|
|
"md5",
|
||
|
|
NULL_IF_CONFIG_SMALL("MD5 testing format"),
|
||
|
|
NULL,
|
||
|
|
"",
|
||
|
|
PRIVSIZE,
|
||
|
|
CODEC_ID_PCM_S16LE,
|
||
|
|
CODEC_ID_RAWVIDEO,
|
||
|
|
write_header,
|
||
|
|
write_packet,
|
||
|
|
write_trailer,
|
||
|
|
};
|