mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-02 03:06:28 +02:00
da18e918a4
This avoids having to overestimate the md5 context size, which isn't known beforehand, allowing us to use the new allocate functions instead. Signed-off-by: Martin Storsjö <martin@martin.st>
133 lines
3.8 KiB
C
133 lines
3.8 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 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 "libavutil/md5.h"
|
|
#include "avformat.h"
|
|
#include "internal.h"
|
|
|
|
struct MD5Context {
|
|
struct AVMD5 *md5;
|
|
};
|
|
|
|
static void md5_finish(struct AVFormatContext *s, char *buf)
|
|
{
|
|
struct MD5Context *c = s->priv_data;
|
|
uint8_t md5[16];
|
|
int i, offset = strlen(buf);
|
|
av_md5_final(c->md5, 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;
|
|
|
|
avio_write(s->pb, buf, strlen(buf));
|
|
avio_flush(s->pb);
|
|
}
|
|
|
|
#if CONFIG_MD5_MUXER
|
|
static int write_header(struct AVFormatContext *s)
|
|
{
|
|
struct MD5Context *c = s->priv_data;
|
|
c->md5 = av_md5_alloc();
|
|
if (!c->md5)
|
|
return AVERROR(ENOMEM);
|
|
av_md5_init(c->md5);
|
|
return 0;
|
|
}
|
|
|
|
static int write_packet(struct AVFormatContext *s, AVPacket *pkt)
|
|
{
|
|
struct MD5Context *c = s->priv_data;
|
|
av_md5_update(c->md5, pkt->data, pkt->size);
|
|
return 0;
|
|
}
|
|
|
|
static int write_trailer(struct AVFormatContext *s)
|
|
{
|
|
struct MD5Context *c = s->priv_data;
|
|
char buf[64] = "MD5=";
|
|
|
|
md5_finish(s, buf);
|
|
|
|
av_freep(&c->md5);
|
|
return 0;
|
|
}
|
|
|
|
AVOutputFormat ff_md5_muxer = {
|
|
.name = "md5",
|
|
.long_name = NULL_IF_CONFIG_SMALL("MD5 testing"),
|
|
.extensions = "",
|
|
.priv_data_size = sizeof(struct MD5Context),
|
|
.audio_codec = AV_CODEC_ID_PCM_S16LE,
|
|
.video_codec = AV_CODEC_ID_RAWVIDEO,
|
|
.write_header = write_header,
|
|
.write_packet = write_packet,
|
|
.write_trailer = write_trailer,
|
|
.flags = AVFMT_NOTIMESTAMPS,
|
|
};
|
|
#endif
|
|
|
|
#if CONFIG_FRAMEMD5_MUXER
|
|
static int framemd5_write_header(struct AVFormatContext *s)
|
|
{
|
|
struct MD5Context *c = s->priv_data;
|
|
c->md5 = av_md5_alloc();
|
|
if (!c->md5)
|
|
return AVERROR(ENOMEM);
|
|
return ff_framehash_write_header(s);
|
|
}
|
|
|
|
static int framemd5_write_packet(struct AVFormatContext *s, AVPacket *pkt)
|
|
{
|
|
struct MD5Context *c = s->priv_data;
|
|
char buf[256];
|
|
av_md5_init(c->md5);
|
|
av_md5_update(c->md5, pkt->data, pkt->size);
|
|
|
|
snprintf(buf, sizeof(buf) - 64, "%d, %10"PRId64", %10"PRId64", %8d, %8d, ",
|
|
pkt->stream_index, pkt->dts, pkt->pts, pkt->duration, pkt->size);
|
|
md5_finish(s, buf);
|
|
return 0;
|
|
}
|
|
|
|
static int framemd5_write_trailer(struct AVFormatContext *s)
|
|
{
|
|
struct MD5Context *c = s->priv_data;
|
|
av_freep(&c->md5);
|
|
return 0;
|
|
}
|
|
|
|
AVOutputFormat ff_framemd5_muxer = {
|
|
.name = "framemd5",
|
|
.long_name = NULL_IF_CONFIG_SMALL("Per-frame MD5 testing"),
|
|
.extensions = "",
|
|
.priv_data_size = sizeof(struct MD5Context),
|
|
.audio_codec = AV_CODEC_ID_PCM_S16LE,
|
|
.video_codec = AV_CODEC_ID_RAWVIDEO,
|
|
.write_header = framemd5_write_header,
|
|
.write_packet = framemd5_write_packet,
|
|
.write_trailer = framemd5_write_trailer,
|
|
.flags = AVFMT_VARIABLE_FPS | AVFMT_TS_NONSTRICT,
|
|
};
|
|
#endif
|