/*****************************************************************************
* arts.c : aRts module
*****************************************************************************
- * Copyright (C) 2001-2002 VideoLAN
+ * Copyright (C) 2001-2002 the VideoLAN team
+ * $Id$
*
* Authors: Emmanuel Blindauer <manu@agat.net>
* Samuel Hocevar <sam@zoy.org>
* 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
*
* 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.
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
-#include <errno.h> /* ENOMEM */
-#include <fcntl.h> /* open(), O_WRONLY */
-#include <string.h> /* strerror() */
#include <unistd.h> /* write(), close() */
-#include <stdlib.h> /* calloc(), malloc(), free() */
-#include <vlc/vlc.h>
-#include <vlc/aout.h>
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
-#include "aout_internal.h"
+#include <vlc_common.h>
+#include <vlc_plugin.h>
+#include <vlc_aout.h>
#include <artsc.h>
struct aout_sys_t
{
arts_stream_t stream;
- vlc_bool_t b_initialized;
mtime_t latency;
int i_size;
*****************************************************************************/
static int Open ( vlc_object_t * );
static void Close ( vlc_object_t * );
-
-static int SetFormat ( aout_instance_t * );
-static void Play ( aout_instance_t *, aout_buffer_t * );
-static int aRtsThread ( aout_instance_t * );
+static void Play ( aout_instance_t * );
/*****************************************************************************
* Module descriptor
*****************************************************************************/
vlc_module_begin();
- set_description( _("aRts audio module") );
+ 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();
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 )
- {
- msg_Err( p_aout, "out of memory" );
- return -1;
- }
+ 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 -1;
- }
-
- p_aout->output.p_sys = p_sys;
- /* Create aRts thread and wait for its readiness. */
- p_sys->b_initialized = VLC_FALSE;
- if( vlc_thread_create( p_aout, "aout", aRtsThread, VLC_FALSE ) )
+ if( i_err < 0 )
{
- msg_Err( p_aout, "cannot create aRts thread (%s)", strerror(errno) );
+ msg_Err( p_aout, "arts_init failed (%s)", arts_error_text(i_err) );
free( p_sys );
- return -1;
+ return VLC_EGENERIC;
}
- p_aout->output.pf_setformat = SetFormat;
p_aout->output.pf_play = Play;
+ aout_VolumeSoftInit( p_aout );
- p_sys->stream = NULL;
-
- return 0;
-}
-
-/*****************************************************************************
- * SetFormat: set the output format
- *****************************************************************************/
-static int SetFormat( aout_instance_t *p_aout )
-{
- struct aout_sys_t * p_sys = p_aout->output.p_sys;
-
- p_sys->b_initialized = VLC_FALSE;
-
- if( p_sys->stream )
+ 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_close_stream( p_sys->stream );
+ /* 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 */
+ /* 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,
- p_aout->output.output.i_channels, "vlc" );
+ i_nb_channels, "vlc" );
if( p_sys->stream == NULL )
{
msg_Err( p_aout, "cannot open aRts socket" );
- return -1;
+ free( p_sys );
+ return VLC_EGENERIC;
}
/* Try not to bufferize more than 200 ms */
- arts_stream_set( p_sys->stream, ARTS_P_BUFFER_TIME, 200 );
+ 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 )
- + arts_stream_get( p_sys->stream, ARTS_P_BUFFER_TIME ) / 2 );
+ * (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 );
- p_aout->output.output.i_format = AOUT_FMT_S16_NE;
- p_aout->output.i_nb_samples = p_sys->i_size;
-
- p_sys->b_initialized = VLC_TRUE;
+ 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 ) );
- return 0;
-}
+ p_aout->output.i_nb_samples = p_sys->i_size / sizeof(uint16_t)
+ / i_nb_channels;
-/*****************************************************************************
- * Play: queue a buffer for playing by aRtsThread
- *****************************************************************************/
-static void Play( aout_instance_t *p_aout, aout_buffer_t * p_buffer )
-{
- aout_FifoPush( p_aout, &p_aout->output.fifo, p_buffer );
+ return VLC_SUCCESS;
}
/*****************************************************************************
- * Close: close the aRts socket
+ * Play: nothing to do
*****************************************************************************/
-static void Close( vlc_object_t *p_this )
+static void Play( aout_instance_t *p_aout )
{
- aout_instance_t *p_aout = (aout_instance_t *)p_this;
struct aout_sys_t * p_sys = p_aout->output.p_sys;
+ aout_buffer_t * p_buffer;
+ int i_tmp;
- p_aout->b_die = 1;
- vlc_thread_join( p_aout );
-
- if( p_sys->stream )
+#if 0
+ while( arts_stream_get( p_sys->stream, ARTS_P_BUFFER_SPACE ) < 16384*3/2 )
{
- arts_close_stream( p_sys->stream );
+ msleep( 10000 );
}
+#endif
- arts_free();
- free( p_sys );
-}
-
-/*****************************************************************************
- * aRtsThread: asynchronous thread used to DMA the data to the device
- *****************************************************************************/
-static int aRtsThread( aout_instance_t * p_aout )
-{
- struct aout_sys_t * p_sys = p_aout->output.p_sys;
+ p_buffer = aout_FifoPop( p_aout, &p_aout->output.fifo );
- while ( !p_aout->b_die )
+ if( p_buffer != NULL )
{
- aout_buffer_t * p_buffer;
- int i_tmp, i_size;
- byte_t * p_bytes;
-
- if( !p_sys->b_initialized )
- {
- msleep( THREAD_SLEEP );
- continue;
- }
-
- /* Get the presentation date of the next write() operation. It
- * is equal to the current date + latency */
- p_buffer = aout_OutputNextBuffer( p_aout, mdate() + p_sys->latency );
-
- if ( p_buffer != NULL )
- {
- p_bytes = p_buffer->p_buffer;
- i_size = p_buffer->i_nb_bytes;
- }
- else
- {
- i_size = aout_FormatToByterate( &p_aout->output.output )
- * p_sys->i_size
- / p_aout->output.output.i_rate;
- p_bytes = alloca( i_size );
- memset( p_bytes, 0, i_size );
- }
-
- i_tmp = arts_write( p_sys->stream, p_bytes, i_size );
+ 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) );
}
- if ( p_buffer != NULL )
- {
- aout_BufferFree( p_buffer );
- }
+ 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;
- return 0;
+ arts_close_stream( p_sys->stream );
+ arts_free();
+ free( p_sys );
}
projects / vlc / blobdiff