2 * MD5 encoder (for codec/format testing)
3 * Copyright (c) 2009 Reimar Döffinger, based on crcenc (c) 2002 Fabrice Bellard
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 #include "libavutil/md5.h"
28 static void md5_finish(struct AVFormatContext *s, char *buf)
31 int i, offset = strlen(buf);
32 av_md5_final(s->priv_data, md5);
33 for (i = 0; i < sizeof(md5); i++) {
34 snprintf(buf + offset, 3, "%02"PRIx8, md5[i]);
40 avio_write(s->pb, buf, strlen(buf));
45 static int write_header(struct AVFormatContext *s)
47 if (PRIVSIZE < av_md5_size) {
48 av_log(s, AV_LOG_ERROR, "Insuffient size for md5 context\n");
51 av_md5_init(s->priv_data);
55 static int write_packet(struct AVFormatContext *s, AVPacket *pkt)
57 av_md5_update(s->priv_data, pkt->data, pkt->size);
61 static int write_trailer(struct AVFormatContext *s)
63 char buf[64] = "MD5=";
69 AVOutputFormat ff_md5_muxer = {
71 .long_name = NULL_IF_CONFIG_SMALL("MD5 testing format"),
72 .priv_data_size = PRIVSIZE,
73 .audio_codec = CODEC_ID_PCM_S16LE,
74 .video_codec = CODEC_ID_RAWVIDEO,
75 .write_header = write_header,
76 .write_packet = write_packet,
77 .write_trailer = write_trailer,
78 .flags = AVFMT_NOTIMESTAMPS,
82 #if CONFIG_FRAMEMD5_MUXER
83 static int framemd5_write_packet(struct AVFormatContext *s, AVPacket *pkt)
86 if (PRIVSIZE < av_md5_size) {
87 av_log(s, AV_LOG_ERROR, "Insuffient size for md5 context\n");
90 av_md5_init(s->priv_data);
91 av_md5_update(s->priv_data, pkt->data, pkt->size);
93 snprintf(buf, sizeof(buf) - 64, "%d, %10"PRId64", %10"PRId64", %8d, %8d, ",
94 pkt->stream_index, pkt->dts, pkt->pts, pkt->duration, pkt->size);
99 AVOutputFormat ff_framemd5_muxer = {
101 .long_name = NULL_IF_CONFIG_SMALL("Per-frame MD5 testing format"),
102 .priv_data_size = PRIVSIZE,
103 .audio_codec = CODEC_ID_PCM_S16LE,
104 .video_codec = CODEC_ID_RAWVIDEO,
105 .write_header = ff_framehash_write_header,
106 .write_packet = framemd5_write_packet,
107 .flags = AVFMT_VARIABLE_FPS | AVFMT_TS_NONSTRICT,