/***************************************************************************** * display.c: display stream output module ***************************************************************************** * Copyright (C) 2001, 2002 the VideoLAN team * $Id$ * * 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 *****************************************************************************/ #include <vlc/vlc.h> #include <vlc_input.h> #include <vlc_sout.h> #include <vlc_block.h> /***************************************************************************** * Module descriptor *****************************************************************************/ #define AUDIO_TEXT N_("Enable audio") #define AUDIO_LONGTEXT N_( "Enable/disable audio rendering." ) #define VIDEO_TEXT N_("Enable video") #define VIDEO_LONGTEXT N_( "Enable/disable video rendering." ) #define DELAY_TEXT N_("Delay") #define DELAY_LONGTEXT N_( "Introduces a delay in the display of the stream." ) static int Open ( vlc_object_t * ); static void Close( vlc_object_t * ); #define SOUT_CFG_PREFIX "sout-display-" vlc_module_begin(); set_shortname( _("Display")); set_description( _("Display stream output") ); set_capability( "sout stream", 50 ); add_shortcut( "display" ); set_category( CAT_SOUT ); set_subcategory( SUBCAT_SOUT_STREAM ); add_bool( SOUT_CFG_PREFIX "audio", 1, NULL, AUDIO_TEXT, AUDIO_LONGTEXT, VLC_TRUE ); add_bool( SOUT_CFG_PREFIX "video", 1, NULL, VIDEO_TEXT, VIDEO_LONGTEXT, VLC_TRUE ); add_integer( SOUT_CFG_PREFIX "delay", 100, NULL, DELAY_TEXT, DELAY_LONGTEXT, VLC_TRUE ); set_callbacks( Open, Close ); vlc_module_end(); /***************************************************************************** * Exported prototypes *****************************************************************************/ static const char *ppsz_sout_options[] = { "audio", "video", "delay", NULL }; 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* ); struct sout_stream_sys_t { input_thread_t *p_input; unsigned i_es; vlc_bool_t b_audio; vlc_bool_t b_video; mtime_t i_delay; }; /***************************************************************************** * 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; vlc_value_t val; config_ChainParse( p_stream, SOUT_CFG_PREFIX, ppsz_sout_options, p_stream->p_cfg ); p_sys = malloc( sizeof( sout_stream_sys_t ) ); p_sys->p_input = NULL; p_sys->i_es = 0; var_Get( p_stream, SOUT_CFG_PREFIX "audio", &val ); p_sys->b_audio = val.b_bool; var_Get( p_stream, SOUT_CFG_PREFIX "video", &val ); p_sys->b_video = val.b_bool; var_Get( p_stream, SOUT_CFG_PREFIX "delay", &val ); p_sys->i_delay = (int64_t)val.i_int * 1000; p_stream->pf_add = Add; p_stream->pf_del = Del; p_stream->pf_send = Send; p_stream->p_sys = p_sys; /* update p_sout->i_out_pace_nocontrol */ p_stream->p_sout->i_out_pace_nocontrol++; 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; /* update p_sout->i_out_pace_nocontrol */ p_stream->p_sout->i_out_pace_nocontrol--; free( p_sys ); } struct sout_stream_id_t { decoder_t *p_dec; }; 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; if( ( p_fmt->i_cat == AUDIO_ES && !p_sys->b_audio )|| ( p_fmt->i_cat == VIDEO_ES && !p_sys->b_video ) ) { return NULL; } id = malloc( sizeof( sout_stream_id_t ) ); if( id == NULL ) return NULL; if( p_sys->i_es == 0 ) { p_sys->p_input = vlc_object_find( p_stream, VLC_OBJECT_INPUT, FIND_PARENT ); if( p_sys->p_input == NULL ) { msg_Err( p_stream, "cannot find input" ); free( id ); return NULL; } } id->p_dec = input_DecoderNew( p_sys->p_input, p_fmt, VLC_TRUE ); if( id->p_dec == NULL ) { msg_Err( p_stream, "cannot create decoder for fcc=`%4.4s'", (char*)&p_fmt->i_codec ); free( id ); if( p_sys->i_es == 0 ) vlc_object_release( p_sys->p_input ); return NULL; } p_sys->i_es++; return id; } static int Del( sout_stream_t *p_stream, sout_stream_id_t *id ) { input_DecoderDelete( id->p_dec ); if( --p_stream->p_sys->i_es == 0) vlc_object_release( p_stream->p_sys->p_input ); 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; while( p_buffer ) { block_t *p_next = p_buffer->p_next; p_buffer->p_next = NULL; if( id->p_dec && p_buffer->i_buffer > 0 ) { if( p_buffer->i_dts <= 0 ) p_buffer->i_dts= 0; else p_buffer->i_dts += p_sys->i_delay; if( p_buffer->i_pts <= 0 ) p_buffer->i_pts= 0; else p_buffer->i_pts += p_sys->i_delay; input_DecoderDecode( id->p_dec, p_buffer ); } p_buffer = p_next; } return VLC_SUCCESS; }