/*****************************************************************************
* output.c : internal management of output streams for the audio output
*****************************************************************************
- * Copyright (C) 2002-2004 VideoLAN
- * $Id: output.c,v 1.43 2004/01/26 21:37:58 hartman Exp $
+ * Copyright (C) 2002-2004 the VideoLAN team
+ * $Id$
*
* Authors: Christophe Massiot <massiot@via.ecp.fr>
*
*
* 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 <stdlib.h> /* calloc(), malloc(), free() */
-#include <string.h>
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
-#include <vlc/vlc.h>
+#include <vlc_common.h>
+#include <vlc_aout.h>
+#include <vlc_cpu.h>
+#include <vlc_modules.h>
-#include "audio_output.h"
#include "aout_internal.h"
/*****************************************************************************
audio_sample_format_t * p_format )
{
/* Retrieve user defaults. */
- char * psz_name = config_GetPsz( p_aout, "aout" );
- int i_rate = config_GetInt( p_aout, "aout-rate" );
+ int i_rate = var_InheritInteger( p_aout, "aout-rate" );
vlc_value_t val, text;
/* kludge to avoid a fpu error when rate is 0... */
if( i_rate == 0 ) i_rate = -1;
p_aout->output.output.i_rate = i_rate;
aout_FormatPrepare( &p_aout->output.output );
- vlc_mutex_lock( &p_aout->output_fifo_lock );
-
/* Find the best output plug-in. */
- p_aout->output.p_module = module_Need( p_aout, "audio output", psz_name );
- if ( psz_name != NULL ) free( psz_name );
+ p_aout->output.p_module = module_need( p_aout, "audio output", "$aout", false );
if ( p_aout->output.p_module == NULL )
{
- msg_Err( p_aout, "no suitable aout module" );
- vlc_mutex_unlock( &p_aout->output_fifo_lock );
+ msg_Err( p_aout, "no suitable audio output module" );
return -1;
}
var_AddCallback( p_aout, "audio-channels", aout_ChannelsRestart,
NULL );
}
- val.b_bool = VLC_TRUE;
+ val.b_bool = true;
var_Set( p_aout, "intf-change", val );
aout_FormatPrepare( &p_aout->output.output );
+ aout_lock_output_fifo( p_aout );
+
/* Prepare FIFO. */
aout_FifoInit( p_aout, &p_aout->output.fifo,
p_aout->output.output.i_rate );
- vlc_mutex_unlock( &p_aout->output_fifo_lock );
+ aout_unlock_output_fifo( p_aout );
aout_FormatPrint( p_aout, "output", &p_aout->output.output );
/* Calculate the resulting mixer output format. */
- memcpy( &p_aout->mixer.mixer, &p_aout->output.output,
- sizeof(audio_sample_format_t) );
+ p_aout->mixer_format = p_aout->output.output;
if ( !AOUT_FMT_NON_LINEAR(&p_aout->output.output) )
{
/* Non-S/PDIF mixer only deals with float32 or fixed32. */
- p_aout->mixer.mixer.i_format
- = (p_aout->p_libvlc->i_cpu & CPU_CAPABILITY_FPU) ?
- VLC_FOURCC('f','l','3','2') :
- VLC_FOURCC('f','i','3','2');
- aout_FormatPrepare( &p_aout->mixer.mixer );
+ p_aout->mixer_format.i_format
+ = HAVE_FPU ? VLC_CODEC_FL32 : VLC_CODEC_FI32;
+ aout_FormatPrepare( &p_aout->mixer_format );
}
else
{
- p_aout->mixer.mixer.i_format = p_format->i_format;
+ p_aout->mixer_format.i_format = p_format->i_format;
}
- aout_FormatPrint( p_aout, "mixer", &p_aout->output.output );
+ aout_FormatPrint( p_aout, "mixer", &p_aout->mixer_format );
/* Create filters. */
+ p_aout->output.i_nb_filters = 0;
if ( aout_FiltersCreatePipeline( p_aout, p_aout->output.pp_filters,
&p_aout->output.i_nb_filters,
- &p_aout->mixer.mixer,
+ &p_aout->mixer_format,
&p_aout->output.output ) < 0 )
{
- msg_Err( p_aout, "couldn't set an output pipeline" );
- module_Unneed( p_aout, p_aout->output.p_module );
+ msg_Err( p_aout, "couldn't create audio output pipeline" );
+ module_unneed( p_aout, p_aout->output.p_module );
return -1;
}
/* Prepare hints for the buffer allocator. */
- p_aout->mixer.output_alloc.i_alloc_type = AOUT_ALLOC_HEAP;
- p_aout->mixer.output_alloc.i_bytes_per_sec
- = p_aout->mixer.mixer.i_bytes_per_frame
- * p_aout->mixer.mixer.i_rate
- / p_aout->mixer.mixer.i_frame_length;
+ p_aout->mixer_allocation.b_alloc = true;
+ p_aout->mixer_allocation.i_bytes_per_sec
+ = p_aout->mixer_format.i_bytes_per_frame
+ * p_aout->mixer_format.i_rate
+ / p_aout->mixer_format.i_frame_length;
aout_FiltersHintBuffers( p_aout, p_aout->output.pp_filters,
p_aout->output.i_nb_filters,
- &p_aout->mixer.output_alloc );
+ &p_aout->mixer_allocation );
p_aout->output.b_error = 0;
return 0;
return;
}
- module_Unneed( p_aout, p_aout->output.p_module );
+ module_unneed( p_aout, p_aout->output.p_module );
aout_FiltersDestroyPipeline( p_aout, p_aout->output.pp_filters,
p_aout->output.i_nb_filters );
+
+ aout_lock_output_fifo( p_aout );
aout_FifoDestroy( p_aout, &p_aout->output.fifo );
+ aout_unlock_output_fifo( p_aout );
- p_aout->output.b_error = VLC_TRUE;
+ p_aout->output.b_error = true;
}
/*****************************************************************************
*****************************************************************************/
void aout_OutputPlay( aout_instance_t * p_aout, aout_buffer_t * p_buffer )
{
- aout_FiltersPlay( p_aout, p_aout->output.pp_filters,
- p_aout->output.i_nb_filters,
+ aout_FiltersPlay( p_aout->output.pp_filters, p_aout->output.i_nb_filters,
&p_buffer );
- vlc_mutex_lock( &p_aout->output_fifo_lock );
+ if( !p_buffer )
+ return;
+ if( p_buffer->i_buffer == 0 )
+ {
+ block_Release( p_buffer );
+ return;
+ }
+
+ aout_lock_output_fifo( p_aout );
aout_FifoPush( p_aout, &p_aout->output.fifo, p_buffer );
p_aout->output.pf_play( p_aout );
- vlc_mutex_unlock( &p_aout->output_fifo_lock );
+ aout_unlock_output_fifo( p_aout );
}
/*****************************************************************************
*****************************************************************************/
aout_buffer_t * aout_OutputNextBuffer( aout_instance_t * p_aout,
mtime_t start_date,
- vlc_bool_t b_can_sleek )
+ bool b_can_sleek )
{
aout_buffer_t * p_buffer;
- vlc_mutex_lock( &p_aout->output_fifo_lock );
+ aout_lock_output_fifo( p_aout );
p_buffer = p_aout->output.fifo.p_first;
- while ( p_buffer && p_buffer->start_date < mdate() - AOUT_PTS_TOLERANCE )
+
+ /* Drop the audio sample if the audio output is really late.
+ * In the case of b_can_sleek, we don't use a resampler so we need to be
+ * a lot more severe. */
+ while ( p_buffer && p_buffer->i_pts <
+ (b_can_sleek ? start_date : mdate()) - AOUT_PTS_TOLERANCE )
{
- msg_Dbg( p_aout, "audio output is too slow ("I64Fd"), "
- "trashing "I64Fd"us", mdate() - p_buffer->start_date,
- p_buffer->end_date - p_buffer->start_date );
+ msg_Dbg( p_aout, "audio output is too slow (%"PRId64"), "
+ "trashing %"PRId64"us", mdate() - p_buffer->i_pts,
+ p_buffer->i_length );
p_buffer = p_buffer->p_next;
aout_BufferFree( p_aout->output.fifo.p_first );
p_aout->output.fifo.p_first = p_buffer;
p_aout->output.fifo.pp_last = &p_aout->output.fifo.p_first;
#if 0 /* This is bad because the audio output might just be trying to fill
- * in it's internal buffers. And anyway, it's up to the audio output
+ * in its internal buffers. And anyway, it's up to the audio output
* to deal with this kind of starvation. */
/* Set date to 0, to allow the mixer to send a new buffer ASAP */
p_aout->output.b_starving = 1;
#endif
- vlc_mutex_unlock( &p_aout->output_fifo_lock );
+ aout_unlock_output_fifo( p_aout );
return NULL;
}
/* Here we suppose that all buffers have the same duration - this is
- * generally true, and anyway if it's wrong it won't be a disaster. */
- if ( p_buffer->start_date > start_date
- + (p_buffer->end_date - p_buffer->start_date) )
+ * generally true, and anyway if it's wrong it won't be a disaster.
+ */
+ if ( p_buffer->i_pts > start_date + p_buffer->i_length )
/*
* + AOUT_PTS_TOLERANCE )
* There is no reason to want that, it just worsen the scheduling of
* --Gibalou
*/
{
- vlc_mutex_unlock( &p_aout->output_fifo_lock );
+ const mtime_t i_delta = p_buffer->i_pts - start_date;
+ aout_unlock_output_fifo( p_aout );
+
if ( !p_aout->output.b_starving )
- msg_Dbg( p_aout, "audio output is starving ("I64Fd"), "
- "playing silence", p_buffer->start_date - start_date );
+ msg_Dbg( p_aout, "audio output is starving (%"PRId64"), "
+ "playing silence", i_delta );
p_aout->output.b_starving = 1;
return NULL;
}
p_aout->output.b_starving = 0;
+ p_aout->output.fifo.p_first = p_buffer->p_next;
+ if ( p_buffer->p_next == NULL )
+ {
+ p_aout->output.fifo.pp_last = &p_aout->output.fifo.p_first;
+ }
+
if ( !b_can_sleek &&
- ( (p_buffer->start_date - start_date > AOUT_PTS_TOLERANCE)
- || (start_date - p_buffer->start_date > AOUT_PTS_TOLERANCE) ) )
+ ( (p_buffer->i_pts - start_date > AOUT_PTS_TOLERANCE)
+ || (start_date - p_buffer->i_pts > AOUT_PTS_TOLERANCE) ) )
{
/* Try to compensate the drift by doing some resampling. */
int i;
- mtime_t difference = start_date - p_buffer->start_date;
+ mtime_t difference = start_date - p_buffer->i_pts;
msg_Warn( p_aout, "output date isn't PTS date, requesting "
- "resampling ("I64Fd")", difference );
+ "resampling (%"PRId64")", difference );
- vlc_mutex_lock( &p_aout->input_fifos_lock );
+ aout_FifoMoveDates( p_aout, &p_aout->output.fifo, difference );
+ aout_unlock_output_fifo( p_aout );
+
+ aout_lock_input_fifos( p_aout );
for ( i = 0; i < p_aout->i_nb_inputs; i++ )
{
- aout_fifo_t * p_fifo = &p_aout->pp_inputs[i]->fifo;
+ aout_fifo_t * p_fifo = &p_aout->pp_inputs[i]->mixer.fifo;
aout_FifoMoveDates( p_aout, p_fifo, difference );
}
-
- aout_FifoMoveDates( p_aout, &p_aout->output.fifo, difference );
- vlc_mutex_unlock( &p_aout->input_fifos_lock );
- }
-
- p_aout->output.fifo.p_first = p_buffer->p_next;
- if ( p_buffer->p_next == NULL )
- {
- p_aout->output.fifo.pp_last = &p_aout->output.fifo.p_first;
+ aout_unlock_input_fifos( p_aout );
}
+ else
+ aout_unlock_output_fifo( p_aout );
- vlc_mutex_unlock( &p_aout->output_fifo_lock );
return p_buffer;
}
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