+++ /dev/null
-/*****************************************************************************
- * arts.c : aRts module
- *****************************************************************************
- * Copyright (C) 2001-2002 the VideoLAN team
- * $Id$
- *
- * Authors: Emmanuel Blindauer <manu@agat.net>
- * Samuel Hocevar <sam@zoy.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
- *****************************************************************************/
-#include <unistd.h> /* write(), close() */
-
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif
-
-#include <vlc_common.h>
-#include <vlc_plugin.h>
-#include <vlc_aout.h>
-
-#include <artsc.h>
-
-/*****************************************************************************
- * aout_sys_t: arts audio output method descriptor
- *****************************************************************************
- * This structure is part of the audio output thread descriptor.
- * It describes some arts specific variables.
- *****************************************************************************/
-struct aout_sys_t
-{
- arts_stream_t stream;
-
- mtime_t latency;
- int i_size;
-};
-
-/*****************************************************************************
- * Local prototypes
- *****************************************************************************/
-static int Open ( vlc_object_t * );
-static void Close ( vlc_object_t * );
-static void Play ( aout_instance_t * );
-
-/*****************************************************************************
- * Module descriptor
- *****************************************************************************/
-vlc_module_begin ()
- set_shortname( "aRts" )
- set_description( N_("aRts audio output") )
- set_capability( "audio output", 50 )
- set_category( CAT_AUDIO )
- set_subcategory( SUBCAT_AUDIO_AOUT )
- set_callbacks( Open, Close )
-vlc_module_end ()
-
-/*****************************************************************************
- * Open: open an aRts socket
- *****************************************************************************/
-static int Open( vlc_object_t *p_this )
-{
- aout_instance_t *p_aout = (aout_instance_t *)p_this;
- struct aout_sys_t * p_sys;
- int i_err;
- int i_nb_channels;
-
- /* Allocate structure */
- p_sys = malloc( sizeof( aout_sys_t ) );
- if( p_sys == NULL )
- return VLC_ENOMEM;
- p_aout->output.p_sys = p_sys;
-
- i_err = arts_init();
-
- if( i_err < 0 )
- {
- msg_Err( p_aout, "arts_init failed (%s)", arts_error_text(i_err) );
- free( p_sys );
- return VLC_EGENERIC;
- }
-
- p_aout->output.pf_play = Play;
- aout_VolumeSoftInit( p_aout );
-
- p_aout->output.output.i_format = AOUT_FMT_S16_NE;
- i_nb_channels = aout_FormatNbChannels( &p_aout->output.output );
- if ( i_nb_channels > 2 )
- {
- /* aRts doesn't support more than two channels. */
- i_nb_channels = 2;
- p_aout->output.output.i_physical_channels =
- AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
- }
-
- /* Open a socket for playing a stream, set format to 16 bits */
- p_sys->stream = arts_play_stream( p_aout->output.output.i_rate, 16,
- i_nb_channels, "vlc" );
- if( p_sys->stream == NULL )
- {
- msg_Err( p_aout, "cannot open aRts socket" );
- free( p_sys );
- return VLC_EGENERIC;
- }
-
- /* Try not to bufferize more than 200 ms */
- arts_stream_set( p_sys->stream, ARTS_P_BUFFER_TIME, 50 );
-
- /* Estimate latency with a half full buffer */
- p_sys->latency = (mtime_t)1000
- * (mtime_t)arts_stream_get( p_sys->stream, ARTS_P_SERVER_LATENCY );
- p_sys->i_size = arts_stream_get( p_sys->stream, ARTS_P_PACKET_SIZE );
-
- msg_Dbg( p_aout, "aRts initialized, latency %i000, %i packets of size %i",
- arts_stream_get( p_sys->stream, ARTS_P_SERVER_LATENCY ),
- arts_stream_get( p_sys->stream, ARTS_P_PACKET_COUNT ),
- arts_stream_get( p_sys->stream, ARTS_P_PACKET_SIZE ) );
-
- p_aout->output.i_nb_samples = p_sys->i_size / sizeof(uint16_t)
- / i_nb_channels;
-
- return VLC_SUCCESS;
-}
-
-/*****************************************************************************
- * Play: nothing to do
- *****************************************************************************/
-static void Play( aout_instance_t *p_aout )
-{
- struct aout_sys_t * p_sys = p_aout->output.p_sys;
- aout_buffer_t * p_buffer;
- int i_tmp;
-
-#if 0
- while( arts_stream_get( p_sys->stream, ARTS_P_BUFFER_SPACE ) < 16384*3/2 )
- {
- msleep( 10000 );
- }
-#endif
-
- p_buffer = aout_FifoPop( p_aout, &p_aout->output.fifo );
-
- if( p_buffer != NULL )
- {
- i_tmp = arts_write( p_sys->stream, p_buffer->p_buffer,
- p_buffer->i_nb_bytes );
-
- if( i_tmp < 0 )
- {
- msg_Err( p_aout, "write failed (%s)", arts_error_text(i_tmp) );
- }
-
- aout_BufferFree( p_buffer );
- }
-}
-
-/*****************************************************************************
- * Close: close the aRts socket
- *****************************************************************************/
-static void Close( vlc_object_t *p_this )
-{
- aout_instance_t *p_aout = (aout_instance_t *)p_this;
- struct aout_sys_t * p_sys = p_aout->output.p_sys;
-
- arts_close_stream( p_sys->stream );
- arts_free();
- free( p_sys );
-}
-
projects / vlc / commitdiff