tcp.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:6k
源码类别:
midi
开发平台:
Unix_Linux
- /*****************************************************************************
- * tcp.c: TCP input module
- *****************************************************************************
- * Copyright (C) 2003-2004 the VideoLAN team
- * $Id: 6c2d50aecacbdedec92cceac1bc2fb0286fe6f6b $
- *
- * Authors: Laurent Aimar <fenrir@via.ecp.fr>
- *
- * 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_access.h>
- #include <vlc_network.h>
- /*****************************************************************************
- * Module descriptor
- *****************************************************************************/
- #define CACHING_TEXT N_("Caching value in ms")
- #define CACHING_LONGTEXT N_(
- "Caching value for TCP streams. This "
- "value should be set in milliseconds." )
- static int Open ( vlc_object_t * );
- static void Close( vlc_object_t * );
- vlc_module_begin ()
- set_shortname( N_("TCP") )
- set_description( N_("TCP input") )
- set_category( CAT_INPUT )
- set_subcategory( SUBCAT_INPUT_ACCESS )
- add_integer( "tcp-caching", DEFAULT_PTS_DELAY / 1000, NULL, CACHING_TEXT,
- CACHING_LONGTEXT, true )
- change_safe()
- set_capability( "access", 0 )
- add_shortcut( "tcp" )
- set_callbacks( Open, Close )
- vlc_module_end ()
- /*****************************************************************************
- * Local prototypes
- *****************************************************************************/
- struct access_sys_t
- {
- int fd;
- };
- static ssize_t Read( access_t *, uint8_t *, size_t );
- static int Control( access_t *, int, va_list );
- /*****************************************************************************
- * Open: open the socket
- *****************************************************************************/
- static int Open( vlc_object_t *p_this )
- {
- access_t *p_access = (access_t *)p_this;
- access_sys_t *p_sys;
- char *psz_dup = strdup(p_access->psz_path);
- char *psz_parser = psz_dup;
- /* Parse server:port */
- if( *psz_parser == '[' )
- {
- psz_parser = strchr( psz_parser, ']' );
- if( psz_parser == NULL )
- psz_parser = psz_dup;
- }
- psz_parser = strchr( psz_parser, ':' );
- if( psz_parser == NULL )
- {
- msg_Err( p_access, "missing port number : %s", psz_dup );
- free( psz_dup );
- return VLC_EGENERIC;
- }
- *psz_parser++ = ' ';
- /* Init p_access */
- access_InitFields( p_access );
- ACCESS_SET_CALLBACKS( Read, NULL, Control, NULL );
- p_sys = p_access->p_sys = calloc( 1, sizeof( access_sys_t ) );
- if( !p_sys )
- {
- free( psz_dup );
- return VLC_ENOMEM;
- }
- p_sys->fd = net_ConnectTCP( p_access, psz_dup, atoi( psz_parser ) );
- free( psz_dup );
- if( p_sys->fd < 0 )
- {
- free( p_sys );
- return VLC_EGENERIC;
- }
- /* Update default_pts to a suitable value for udp access */
- var_Create( p_access, "tcp-caching", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
- return VLC_SUCCESS;
- }
- /*****************************************************************************
- * Close: free unused data structures
- *****************************************************************************/
- static void Close( vlc_object_t *p_this )
- {
- access_t *p_access = (access_t *)p_this;
- access_sys_t *p_sys = p_access->p_sys;
- net_Close( p_sys->fd );
- free( p_sys );
- }
- /*****************************************************************************
- * Read: read on a file descriptor
- *****************************************************************************/
- static ssize_t Read( access_t *p_access, uint8_t *p_buffer, size_t i_len )
- {
- access_sys_t *p_sys = p_access->p_sys;
- int i_read;
- if( p_access->info.b_eof )
- return 0;
- i_read = net_Read( p_access, p_sys->fd, NULL, p_buffer, i_len,
- false );
- if( i_read == 0 )
- p_access->info.b_eof = true;
- else if( i_read > 0 )
- p_access->info.i_pos += i_read;
- return i_read;
- }
- /*****************************************************************************
- * Control:
- *****************************************************************************/
- static int Control( access_t *p_access, int i_query, va_list args )
- {
- bool *pb_bool;
- int64_t *pi_64;
- switch( i_query )
- {
- /* */
- case ACCESS_CAN_SEEK:
- case ACCESS_CAN_FASTSEEK:
- pb_bool = (bool*)va_arg( args, bool* );
- *pb_bool = false;
- break;
- case ACCESS_CAN_PAUSE:
- pb_bool = (bool*)va_arg( args, bool* );
- *pb_bool = true; /* FIXME */
- break;
- case ACCESS_CAN_CONTROL_PACE:
- pb_bool = (bool*)va_arg( args, bool* );
- *pb_bool = true; /* FIXME */
- break;
- case ACCESS_GET_PTS_DELAY:
- pi_64 = (int64_t*)va_arg( args, int64_t * );
- *pi_64 = (int64_t)var_GetInteger( p_access, "tcp-caching" ) * INT64_C(1000);
- break;
- /* */
- case ACCESS_SET_PAUSE_STATE:
- /* Nothing to do */
- break;
- case ACCESS_GET_TITLE_INFO:
- case ACCESS_SET_TITLE:
- case ACCESS_SET_SEEKPOINT:
- case ACCESS_SET_PRIVATE_ID_STATE:
- case ACCESS_GET_CONTENT_TYPE:
- return VLC_EGENERIC;
- default:
- msg_Warn( p_access, "unimplemented query in control" );
- return VLC_EGENERIC;
- }
- return VLC_SUCCESS;
- }