mirror of https://github.com/FFmpeg/FFmpeg.git
needing an external MD5 command. Originally committed as revision 23257 to svn://svn.ffmpeg.org/ffmpeg/trunkoldabi
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/*
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* MD5 encoder (for codec/format testing) |
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* Copyright (c) 2009 Reimar Döffinger, based on crcenc (c) 2002 Fabrice Bellard |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include "libavutil/md5.h" |
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#include "avformat.h" |
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#define PRIVSIZE 512 |
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static int write_header(struct AVFormatContext *s) |
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{ |
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if (PRIVSIZE < av_md5_size) { |
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av_log(s, AV_LOG_ERROR, "Insuffient size for md5 context\n"); |
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return -1; |
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} |
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av_md5_init(s->priv_data); |
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return 0; |
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} |
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static int write_packet(struct AVFormatContext *s, AVPacket *pkt) |
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{ |
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av_md5_update(s->priv_data, pkt->data, pkt->size); |
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return 0; |
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} |
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static int write_trailer(struct AVFormatContext *s) |
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{ |
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uint8_t md5[16]; |
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char buf[64] = "MD5="; |
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int i, offset = strlen(buf); |
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av_md5_final(s->priv_data, md5); |
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for (i = 0; i < sizeof(md5); i++) { |
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snprintf(buf + offset, 3, "%02"PRIx8, md5[i]); |
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offset += 2; |
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} |
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buf[offset] = '\n'; |
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buf[offset+1] = 0; |
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put_buffer(s->pb, buf, strlen(buf)); |
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put_flush_packet(s->pb); |
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return 0; |
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} |
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AVOutputFormat md5_muxer = { |
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"md5", |
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NULL_IF_CONFIG_SMALL("MD5 testing format"), |
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NULL, |
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"", |
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PRIVSIZE, |
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CODEC_ID_PCM_S16LE, |
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CODEC_ID_RAWVIDEO, |
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write_header, |
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write_packet, |
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write_trailer, |
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}; |
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