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/*****************************************************************************
* sdp.c: Fake input for sdp:// scheme
*****************************************************************************
* Copyright (C) 2010 Rémi Denis-Courmont
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <vlc_common.h>
#include <vlc_plugin.h>
#include <vlc_access.h>
static int Open (vlc_object_t *);
static void Close (vlc_object_t *);
vlc_module_begin ()
set_shortname (N_("SDP"))
set_description (N_("Session Description Protocol"))
set_category (CAT_INPUT)
set_subcategory (SUBCAT_INPUT_ACCESS)
set_capability ("access", 0)
set_callbacks (Open, Close)
add_shortcut ("sdp")
vlc_module_end()
static ssize_t Read (access_t *, uint8_t *, size_t);
static int Seek (access_t *, uint64_t);
static int Control (access_t *, int, va_list);
struct access_sys_t
{
size_t offset;
size_t length;
char data[];
};
static int Open (vlc_object_t *obj)
{
access_t *access = (access_t *)obj;
size_t len = strlen (access->psz_location);
access_sys_t *sys = malloc (sizeof(*sys) + len);
if (unlikely(sys == NULL))
return VLC_ENOMEM;
/* NOTE: This copy is not really needed. Better safe than sorry. */
sys->offset = 0;
sys->length = len;
memcpy (sys->data, access->psz_location, len);
access_InitFields (access);
access->pf_read = Read;
access->pf_block = NULL;
access->pf_seek = Seek;
access->pf_control = Control;
access->p_sys = sys;
return VLC_SUCCESS;
}
static void Close (vlc_object_t *obj)
{
access_t *access = (access_t *)obj;
access_sys_t *sys = access->p_sys;
free (sys);
}
static ssize_t Read (access_t *access, uint8_t *buf, size_t len)
{
access_sys_t *sys = access->p_sys;
if (sys->offset >= sys->length)
{
access->info.b_eof = true;
return 0;
}
if (len > sys->length - sys->offset)
len = sys->length - sys->offset;
memcpy (buf, sys->data + sys->offset, len);
return len;
}
static int Seek (access_t *access, uint64_t position)
{
access_sys_t *sys = access->p_sys;
if (position > sys->length)
position = sys->length;
sys->offset = position;
access->info.b_eof = false;
return VLC_SUCCESS;
}
static int Control (access_t *access, int query, va_list args)
{
switch (query)
{
case ACCESS_CAN_SEEK:
case ACCESS_CAN_FASTSEEK:
case ACCESS_CAN_PAUSE:
case ACCESS_CAN_CONTROL_PACE:
{
bool *b = va_arg(args, bool*);
*b = true;
return VLC_SUCCESS;
}
case ACCESS_GET_PTS_DELAY:
{
int64_t *dp = va_arg(args, int64_t *);
*dp = DEFAULT_PTS_DELAY;
return VLC_SUCCESS;
}
case ACCESS_SET_PAUSE_STATE:
return VLC_SUCCESS;
}
return VLC_EGENERIC;
}
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