description.c
资源名称:vlc-1.0.5.zip [点击查看]
上传用户:kjfoods
上传日期:2020-07-06
资源大小:29949k
文件大小:5k
源码类别:
midi
开发平台:
Unix_Linux
- /*****************************************************************************
- * description.c: description stream output module (gathers ES info)
- *****************************************************************************
- * Copyright (C) 2003-2004 the VideoLAN team
- * $Id: e1ebd6c1bb7e837d531eed2ae36bdef27b069bff $
- *
- * 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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
- *****************************************************************************/
- /*****************************************************************************
- * Preamble
- *****************************************************************************/
- #ifdef HAVE_CONFIG_H
- # include "config.h"
- #endif
- #include <vlc_common.h>
- #include <vlc_plugin.h>
- #include <vlc_input.h>
- #include <vlc_block.h>
- #include <vlc_sout.h>
- #include <assert.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( N_("Description stream output") )
- set_capability( "sout stream", 50 )
- add_shortcut( "description" )
- set_callbacks( Open, Close )
- vlc_module_end ()
- struct sout_stream_sys_t
- {
- mtime_t i_stream_start;
- };
- struct sout_stream_id_t
- {
- };
- /*****************************************************************************
- * 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->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;
- sout_stream_sys_t *p_sys = p_stream->p_sys;
- msg_Dbg( p_this, "Closing" );
- free( p_sys );
- }
- 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;
- input_item_t *p_item;
- input_thread_t *p_input;
- msg_Dbg( p_stream, "Adding a stream" );
- p_input = vlc_object_find( p_stream, VLC_OBJECT_INPUT, FIND_PARENT );
- assert( p_input );
- p_item = input_GetItem(p_input);
- p_fmt_copy = malloc(sizeof(es_format_t));
- es_format_Copy( p_fmt_copy, p_fmt );
- vlc_mutex_lock( &p_item->lock );
- TAB_APPEND( p_item->i_es, p_item->es, p_fmt_copy );
- vlc_mutex_unlock( &p_item->lock );
- vlc_object_release( p_input );
- if( p_sys->i_stream_start <= 0 )
- p_sys->i_stream_start = mdate();
- id = malloc( sizeof( sout_stream_id_t ) );
- return id;
- }
- static int Del( sout_stream_t *p_stream, sout_stream_id_t *id )
- {
- msg_Dbg( p_stream, "Removing a stream" );
- free( id );
- return VLC_SUCCESS;
- }
- static int Send( sout_stream_t *p_stream, sout_stream_id_t *id,
- block_t *p_buffer )
- {
- VLC_UNUSED(id);
- sout_stream_sys_t *p_sys = p_stream->p_sys;
- block_ChainRelease( p_buffer );
- if( p_sys->i_stream_start + 1500000 < mdate() )
- {
- input_thread_t *p_input;
- p_input = vlc_object_find( p_stream, VLC_OBJECT_INPUT, FIND_PARENT );
- if( p_input )
- {
- p_input->b_eof = true;
- vlc_object_release( p_input );
- }
- }
- return VLC_SUCCESS;
- }