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