2 * Copyright (c) 2010 Mans Rullgard
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 #include "libavutil/avstring.h"
23 #include "libavutil/md5.h"
24 #include "libavutil/mem.h"
25 #include "libavutil/error.h"
34 static int md5_open(URLContext *h, const char *filename, int flags)
36 struct MD5Context *c = h->priv_data;
38 if (!(flags & AVIO_FLAG_WRITE))
39 return AVERROR(EINVAL);
41 c->md5 = av_md5_alloc();
43 return AVERROR(ENOMEM);
49 static int md5_write(URLContext *h, const unsigned char *buf, int size)
51 struct MD5Context *c = h->priv_data;
52 av_md5_update(c->md5, buf, size);
56 static int md5_close(URLContext *h)
58 struct MD5Context *c = h->priv_data;
59 const char *filename = h->filename;
60 uint8_t md5[16], buf[64];
64 av_md5_final(c->md5, md5);
65 for (i = 0; i < sizeof(md5); i++)
66 snprintf(buf + i*2, 3, "%02x", md5[i]);
69 av_strstart(filename, "md5:", &filename);
72 err = ffurl_open(&out, filename, AVIO_FLAG_WRITE,
73 &h->interrupt_callback, NULL);
76 err = ffurl_write(out, buf, i*2+1);
79 if (fwrite(buf, 1, i*2+1, stdout) < i*2+1)
89 URLProtocol ff_md5_protocol = {
92 .url_write = md5_write,
93 .url_close = md5_close,
94 .priv_data_size = sizeof(struct MD5Context),