description.c
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上传日期:2009-03-27
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文件大小:4k
- /*****************************************************************************
- * description.c: description stream output module (gathers ES info)
- *****************************************************************************
- * Copyright (C) 2003-2004 VideoLAN
- * $Id: description.c 8716 2004-09-16 22:04:36Z gbazin $
- *
- * Authors: Gildas Bazin <gbazin@videolan.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, USA.
- *****************************************************************************/
- /*****************************************************************************
- * Preamble
- *****************************************************************************/
- #include <stdlib.h>
- #include <string.h>
- #include <vlc/vlc.h>
- #include <vlc/input.h>
- #include <vlc/sout.h>
- /*****************************************************************************
- * Exported prototypes
- *****************************************************************************/
- static int Open ( vlc_object_t * );
- static void Close ( vlc_object_t * );
- static sout_stream_id_t *Add ( sout_stream_t *, es_format_t * );
- static int Del ( sout_stream_t *, sout_stream_id_t * );
- static int Send( sout_stream_t *, sout_stream_id_t *, block_t* );
- /*****************************************************************************
- * Module descriptor
- *****************************************************************************/
- vlc_module_begin();
- set_description( _("Description stream output") );
- set_capability( "sout stream", 50 );
- add_shortcut( "description" );
- set_callbacks( Open, Close );
- vlc_module_end();
- struct sout_stream_sys_t
- {
- input_thread_t *p_input;
- mtime_t i_stream_start;
- };
- struct sout_stream_id_t
- {
- int i_d_u_m_m_y;
- };
- /*****************************************************************************
- * Open:
- *****************************************************************************/
- static int Open( vlc_object_t *p_this )
- {
- sout_stream_t *p_stream = (sout_stream_t*)p_this;
- sout_stream_sys_t *p_sys;
- p_stream->pf_add = Add;
- p_stream->pf_del = Del;
- p_stream->pf_send = Send;
- p_sys = p_stream->p_sys = malloc(sizeof(sout_stream_sys_t));
- p_sys->p_input = vlc_object_find( p_this, VLC_OBJECT_INPUT, FIND_PARENT );
- if( !p_sys->p_input ) return VLC_EGENERIC;
- p_sys->i_stream_start = 0;
- return VLC_SUCCESS;
- }
- /*****************************************************************************
- * Close:
- *****************************************************************************/
- static void Close( vlc_object_t *p_this )
- {
- sout_stream_t *p_stream = (sout_stream_t *)p_this;
- vlc_object_release( p_stream->p_sys->p_input );
- }
- static sout_stream_id_t *Add( sout_stream_t *p_stream, es_format_t *p_fmt )
- {
- sout_stream_sys_t *p_sys = p_stream->p_sys;
- sout_stream_id_t *id;
- es_format_t *p_fmt_copy = malloc(sizeof(es_format_t));
- id = malloc( sizeof( sout_stream_id_t ) );
- id->i_d_u_m_m_y = 0;
- es_format_Copy( p_fmt_copy, p_fmt );
- vlc_mutex_lock( &p_sys->p_input->input.p_item->lock );
- TAB_APPEND( p_sys->p_input->input.p_item->i_es,
- p_sys->p_input->input.p_item->es, p_fmt_copy );
- vlc_mutex_unlock( &p_sys->p_input->input.p_item->lock );
- if( p_sys->i_stream_start <= 0 ) p_sys->i_stream_start = mdate();
- return id;
- }
- static int Del( sout_stream_t *p_stream, sout_stream_id_t *id )
- {
- free( id );
- return VLC_SUCCESS;
- }
- static int Send( sout_stream_t *p_stream, sout_stream_id_t *id,
- block_t *p_buffer )
- {
- sout_stream_sys_t *p_sys = p_stream->p_sys;
- block_ChainRelease( p_buffer );
- if( p_sys->i_stream_start + 1500000 < mdate() )
- {
- p_sys->p_input->b_eof = VLC_TRUE;
- }
- return VLC_SUCCESS;
- }