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2758cdedfb
Instead of a linked list constructed at av_register_all(), store them in a constant array of pointers. Since no registration is necessary now, this removes some global state from lavf. This will also allow the urlprotocol layer caller to limit the available protocols in a simple and flexible way in the following commits.
96 lines
2.5 KiB
C
96 lines
2.5 KiB
C
/*
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* Copyright (c) 2010 Mans Rullgard
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*
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* This file is part of Libav.
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*
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* Libav 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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* Libav 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 Libav; 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 <stdio.h>
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#include "libavutil/avstring.h"
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#include "libavutil/md5.h"
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#include "libavutil/mem.h"
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#include "libavutil/error.h"
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#include "avformat.h"
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#include "avio.h"
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#include "url.h"
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struct MD5Context {
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struct AVMD5 *md5;
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};
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static int md5_open(URLContext *h, const char *filename, int flags)
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{
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struct MD5Context *c = h->priv_data;
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if (!(flags & AVIO_FLAG_WRITE))
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return AVERROR(EINVAL);
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c->md5 = av_md5_alloc();
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if (!c->md5)
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return AVERROR(ENOMEM);
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av_md5_init(c->md5);
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return 0;
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}
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static int md5_write(URLContext *h, const unsigned char *buf, int size)
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{
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struct MD5Context *c = h->priv_data;
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av_md5_update(c->md5, buf, size);
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return size;
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}
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static int md5_close(URLContext *h)
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{
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struct MD5Context *c = h->priv_data;
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const char *filename = h->filename;
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uint8_t md5[16], buf[64];
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URLContext *out;
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int i, err = 0;
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av_md5_final(c->md5, md5);
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for (i = 0; i < sizeof(md5); i++)
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snprintf(buf + i*2, 3, "%02x", md5[i]);
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buf[i*2] = '\n';
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av_strstart(filename, "md5:", &filename);
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if (*filename) {
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err = ffurl_open(&out, filename, AVIO_FLAG_WRITE,
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&h->interrupt_callback, NULL);
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if (err)
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return err;
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err = ffurl_write(out, buf, i*2+1);
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ffurl_close(out);
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} else {
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if (fwrite(buf, 1, i*2+1, stdout) < i*2+1)
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err = AVERROR(errno);
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}
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av_freep(&c->md5);
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return err;
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}
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const URLProtocol ff_md5_protocol = {
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.name = "md5",
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.url_open = md5_open,
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.url_write = md5_write,
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.url_close = md5_close,
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.priv_data_size = sizeof(struct MD5Context),
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};
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