138 lines
2.9 KiB
C
138 lines
2.9 KiB
C
/*
|
|
* Copyright (C) 2010 Julien BLACHE <jb@jblache.org>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program 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 General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
# include <config.h>
|
|
#endif
|
|
|
|
#include <stdlib.h>
|
|
|
|
#include <libavformat/avformat.h>
|
|
|
|
#include <event.h>
|
|
|
|
#include "logger.h"
|
|
#include "ffmpeg_url_evbuffer.h"
|
|
|
|
/*
|
|
* FFmpeg URL Protocol handler for evbuffers
|
|
*
|
|
* URL: evbuffer:0x03FB33DA ("evbuffer:%p")
|
|
*/
|
|
|
|
|
|
static int
|
|
url_evbuffer_open(URLContext *h, const char *filename, int flags)
|
|
{
|
|
const char *p;
|
|
char *end;
|
|
unsigned long evbuffer_addr;
|
|
|
|
if (flags != URL_WRONLY)
|
|
{
|
|
DPRINTF(E_LOG, L_FFMPEG, "Flags other than URL_WRONLY not supported while opening '%s'\n", filename);
|
|
|
|
return AVERROR(EIO);
|
|
}
|
|
|
|
p = strchr(filename, ':');
|
|
if (!p)
|
|
{
|
|
DPRINTF(E_LOG, L_FFMPEG, "Malformed evbuffer URL: '%s'\n", filename);
|
|
|
|
return AVERROR(EIO);
|
|
}
|
|
|
|
p++;
|
|
|
|
errno = 0;
|
|
evbuffer_addr = strtoul(p, &end, 16);
|
|
if (((errno == ERANGE) && (evbuffer_addr == ULONG_MAX))
|
|
|| ((errno != 0) && (evbuffer_addr == 0)))
|
|
{
|
|
DPRINTF(E_LOG, L_FFMPEG, "Invalid buffer address in URL: '%s'\n", filename);
|
|
|
|
return AVERROR(EIO);
|
|
}
|
|
|
|
if (end == p)
|
|
{
|
|
DPRINTF(E_LOG, L_FFMPEG, "No buffer address found in URL: '%s'\n", filename);
|
|
|
|
return AVERROR(EIO);
|
|
}
|
|
|
|
h->priv_data = (void *)evbuffer_addr;
|
|
if (!h->priv_data)
|
|
{
|
|
DPRINTF(E_LOG, L_FFMPEG, "Got a NULL buffer address from URL '%s'\n", filename);
|
|
|
|
return AVERROR(EIO);
|
|
}
|
|
|
|
/* Seek not supported */
|
|
h->is_streamed = 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
url_evbuffer_close(URLContext *h)
|
|
{
|
|
h->priv_data = NULL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
url_evbuffer_write(URLContext *h, unsigned char *buf, int size)
|
|
{
|
|
struct evbuffer *evbuf;
|
|
int ret;
|
|
|
|
evbuf = (struct evbuffer *)h->priv_data;
|
|
|
|
if (!evbuf)
|
|
{
|
|
DPRINTF(E_LOG, L_FFMPEG, "Write called on evbuffer URL with priv_data = NULL!\n");
|
|
|
|
return -1;
|
|
}
|
|
|
|
ret = evbuffer_add(evbuf, buf, size);
|
|
|
|
return (ret == 0) ? size : -1;
|
|
}
|
|
|
|
URLProtocol evbuffer_protocol = {
|
|
.name = "evbuffer",
|
|
.url_open = url_evbuffer_open,
|
|
.url_close = url_evbuffer_close,
|
|
.url_write = url_evbuffer_write,
|
|
};
|
|
|
|
int
|
|
register_ffmpeg_evbuffer_url_protocol(void)
|
|
{
|
|
int ret;
|
|
|
|
ret = av_register_protocol(&evbuffer_protocol);
|
|
|
|
return ret;
|
|
}
|