/*****************************************************************************
* output.c : internal management of output streams for the audio output
*****************************************************************************
- * Copyright (C) 2002 VideoLAN
- * $Id: output.c,v 1.28 2003/01/04 16:27:49 gbazin 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 "libvlc.h"
#include "aout_internal.h"
/*****************************************************************************
*****************************************************************************
* This function is entered with the mixer lock.
*****************************************************************************/
-int aout_OutputNew( aout_instance_t * p_aout,
- audio_sample_format_t * p_format )
+int aout_OutputNew( audio_output_t * p_aout,
+ const 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" );
- vlc_value_t val;
+ vlc_assert_locked( &p_aout->lock );
+ p_aout->format = *p_format;
- memcpy( &p_aout->output.output, p_format, sizeof(audio_sample_format_t) );
- if ( 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 );
+ /* Retrieve user defaults. */
+ int i_rate = var_InheritInteger( p_aout, "aout-rate" );
+ if ( i_rate != 0 )
+ p_aout->format.i_rate = i_rate;
+ aout_FormatPrepare( &p_aout->format );
/* 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 );
- if ( p_aout->output.p_module == NULL )
+ p_aout->module = module_need( p_aout, "audio output", "$aout", false );
+ if ( p_aout->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;
}
if ( var_Type( p_aout, "audio-channels" ) ==
- (VLC_VAR_STRING | VLC_VAR_HASCHOICE) )
+ (VLC_VAR_INTEGER | VLC_VAR_HASCHOICE) )
{
/* The user may have selected a different channels configuration. */
- var_Get( p_aout, "audio-channels", &val );
-
- if ( !strcmp( val.psz_string, N_("Both") ) )
- {
- p_aout->output.output.i_original_channels =
- AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
- }
- else if ( !strcmp( val.psz_string, N_("Left") ) )
+ switch( var_InheritInteger( p_aout, "audio-channels" ) )
{
- p_aout->output.output.i_original_channels = AOUT_CHAN_LEFT;
+ case AOUT_VAR_CHAN_RSTEREO:
+ p_aout->format.i_original_channels |= AOUT_CHAN_REVERSESTEREO;
+ break;
+ case AOUT_VAR_CHAN_STEREO:
+ p_aout->format.i_original_channels =
+ AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
+ break;
+ case AOUT_VAR_CHAN_LEFT:
+ p_aout->format.i_original_channels = AOUT_CHAN_LEFT;
+ break;
+ case AOUT_VAR_CHAN_RIGHT:
+ p_aout->format.i_original_channels = AOUT_CHAN_RIGHT;
+ break;
+ case AOUT_VAR_CHAN_DOLBYS:
+ p_aout->format.i_original_channels =
+ AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_DOLBYSTEREO;
+ break;
}
- else if ( !strcmp( val.psz_string, N_("Right") ) )
- {
- p_aout->output.output.i_original_channels = AOUT_CHAN_RIGHT;
- }
- else if ( !strcmp( val.psz_string, N_("Dolby Surround") ) )
- {
- p_aout->output.output.i_original_channels
- = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_DOLBYSTEREO;
- }
- free( val.psz_string );
}
- else if ( p_aout->output.output.i_physical_channels == AOUT_CHAN_CENTER )
+ else if ( p_aout->format.i_physical_channels == AOUT_CHAN_CENTER
+ && (p_aout->format.i_original_channels
+ & AOUT_CHAN_PHYSMASK) == (AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT) )
{
+ vlc_value_t val, text;
+
/* Mono - create the audio-channels variable. */
- var_Create( p_aout, "audio-channels", VLC_VAR_STRING | VLC_VAR_HASCHOICE );
- if ( p_aout->output.output.i_original_channels & AOUT_CHAN_DUALMONO )
+ var_Create( p_aout, "audio-channels",
+ VLC_VAR_INTEGER | VLC_VAR_HASCHOICE );
+ text.psz_string = _("Audio Channels");
+ var_Change( p_aout, "audio-channels", VLC_VAR_SETTEXT, &text, NULL );
+
+ val.i_int = AOUT_VAR_CHAN_STEREO; text.psz_string = _("Stereo");
+ var_Change( p_aout, "audio-channels", VLC_VAR_ADDCHOICE, &val, &text );
+ val.i_int = AOUT_VAR_CHAN_LEFT; text.psz_string = _("Left");
+ var_Change( p_aout, "audio-channels", VLC_VAR_ADDCHOICE, &val, &text );
+ val.i_int = AOUT_VAR_CHAN_RIGHT; text.psz_string = _("Right");
+ var_Change( p_aout, "audio-channels", VLC_VAR_ADDCHOICE, &val, &text );
+ if ( p_aout->format.i_original_channels & AOUT_CHAN_DUALMONO )
{
/* Go directly to the left channel. */
- p_aout->output.output.i_original_channels = AOUT_CHAN_LEFT;
+ p_aout->format.i_original_channels = AOUT_CHAN_LEFT;
+ var_SetInteger( p_aout, "audio-channels", AOUT_VAR_CHAN_LEFT );
}
- else
- {
- val.psz_string = N_("Both");
- var_Change( p_aout, "audio-channels", VLC_VAR_ADDCHOICE, &val );
- }
- val.psz_string = N_("Left");
- var_Change( p_aout, "audio-channels", VLC_VAR_ADDCHOICE, &val );
- val.psz_string = N_("Right");
- var_Change( p_aout, "audio-channels", VLC_VAR_ADDCHOICE, &val );
var_AddCallback( p_aout, "audio-channels", aout_ChannelsRestart,
NULL );
}
- else if ( p_aout->output.output.i_physical_channels ==
- (AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT)
- && p_aout->output.output.i_original_channels ==
- (AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT) )
+ else if ( p_aout->format.i_physical_channels ==
+ (AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT)
+ && (p_aout->format.i_original_channels &
+ (AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT)) )
{
+ vlc_value_t val, text;
+
/* Stereo - create the audio-channels variable. */
- var_Create( p_aout, "audio-channels", VLC_VAR_STRING | VLC_VAR_HASCHOICE );
- val.psz_string = N_("Both");
- var_Change( p_aout, "audio-channels", VLC_VAR_ADDCHOICE, &val );
- val.psz_string = N_("Left");
- var_Change( p_aout, "audio-channels", VLC_VAR_ADDCHOICE, &val );
- val.psz_string = N_("Right");
- var_Change( p_aout, "audio-channels", VLC_VAR_ADDCHOICE, &val );
- if ( p_aout->output.output.i_original_channels & AOUT_CHAN_DOLBYSTEREO )
+ var_Create( p_aout, "audio-channels",
+ VLC_VAR_INTEGER | VLC_VAR_HASCHOICE );
+ text.psz_string = _("Audio Channels");
+ var_Change( p_aout, "audio-channels", VLC_VAR_SETTEXT, &text, NULL );
+
+ if ( p_aout->format.i_original_channels & AOUT_CHAN_DOLBYSTEREO )
{
- val.psz_string = N_("Dolby Surround");
- var_Change( p_aout, "audio-channels", VLC_VAR_ADDCHOICE, &val );
+ val.i_int = AOUT_VAR_CHAN_DOLBYS;
+ text.psz_string = _("Dolby Surround");
+ }
+ else
+ {
+ val.i_int = AOUT_VAR_CHAN_STEREO;
+ text.psz_string = _("Stereo");
+ }
+ var_Change( p_aout, "audio-channels", VLC_VAR_ADDCHOICE, &val, &text );
+ val.i_int = AOUT_VAR_CHAN_LEFT; text.psz_string = _("Left");
+ var_Change( p_aout, "audio-channels", VLC_VAR_ADDCHOICE, &val, &text );
+ val.i_int = AOUT_VAR_CHAN_RIGHT; text.psz_string = _("Right");
+ var_Change( p_aout, "audio-channels", VLC_VAR_ADDCHOICE, &val, &text );
+ val.i_int = AOUT_VAR_CHAN_RSTEREO; text.psz_string=_("Reverse stereo");
+ var_Change( p_aout, "audio-channels", VLC_VAR_ADDCHOICE, &val, &text );
+ if ( p_aout->format.i_original_channels & AOUT_CHAN_DUALMONO )
+ {
+ /* Go directly to the left channel. */
+ p_aout->format.i_original_channels = AOUT_CHAN_LEFT;
+ var_SetInteger( p_aout, "audio-channels", AOUT_VAR_CHAN_LEFT );
}
- p_aout->output.output.i_original_channels &= ~AOUT_CHAN_DOLBYSTEREO;
var_AddCallback( p_aout, "audio-channels", aout_ChannelsRestart,
NULL );
}
- val.b_bool = VLC_TRUE;
- var_Set( p_aout, "intf-change", val );
+ var_TriggerCallback( p_aout, "intf-change" );
- aout_FormatPrepare( &p_aout->output.output );
+ aout_FormatPrepare( &p_aout->format );
/* 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_FifoInit( p_aout, &p_aout->fifo, p_aout->format.i_rate );
+ aout_FormatPrint( p_aout, "output", &p_aout->format );
- 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) );
- 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 );
- }
+ /* Choose the mixer format. */
+ p_aout->mixer_format = p_aout->format;
+ if ( AOUT_FMT_NON_LINEAR(&p_aout->format) )
+ p_aout->mixer_format.i_format = p_format->i_format;
else
- {
- p_aout->mixer.mixer.i_format = p_format->i_format;
- }
+ /* Most audio filters can only deal with single-precision,
+ * so lets always use that when hardware supports floating point. */
+ if( HAVE_FPU )
+ p_aout->mixer_format.i_format = VLC_CODEC_FL32;
+ else
+ /* Otherwise, audio filters will not work. Use fixed-point if the input has
+ * more than 16-bits depth. */
+ if( p_format->i_bitspersample > 16 )
+ p_aout->mixer_format.i_format = VLC_CODEC_FI32;
+ else
+ /* Fallback to 16-bits. This avoids pointless conversion to and from
+ * 32-bits samples for the sole purpose of software mixing. */
+ p_aout->mixer_format.i_format = VLC_CODEC_S16N;
- aout_FormatPrint( p_aout, "mixer", &p_aout->output.output );
+ aout_FormatPrepare( &p_aout->mixer_format );
+ aout_FormatPrint( p_aout, "mixer", &p_aout->mixer_format );
/* Create filters. */
- if ( aout_FiltersCreatePipeline( p_aout, p_aout->output.pp_filters,
- &p_aout->output.i_nb_filters,
- &p_aout->mixer.mixer,
- &p_aout->output.output ) < 0 )
+ p_aout->i_nb_filters = 0;
+ if ( aout_FiltersCreatePipeline( p_aout, p_aout->pp_filters,
+ &p_aout->i_nb_filters,
+ &p_aout->mixer_format,
+ &p_aout->format ) < 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->module );
+ p_aout->module = NULL;
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;
-
- aout_FiltersHintBuffers( p_aout, p_aout->output.pp_filters,
- p_aout->output.i_nb_filters,
- &p_aout->mixer.output_alloc );
-
return 0;
}
*****************************************************************************
* This function is entered with the mixer lock.
*****************************************************************************/
-void aout_OutputDelete( aout_instance_t * p_aout )
+void aout_OutputDelete( audio_output_t * p_aout )
{
- module_Unneed( p_aout, p_aout->output.p_module );
+ vlc_assert_locked( &p_aout->lock );
- aout_FiltersDestroyPipeline( p_aout, p_aout->output.pp_filters,
- p_aout->output.i_nb_filters );
- aout_FifoDestroy( p_aout, &p_aout->output.fifo );
+ if( p_aout->module == NULL )
+ return;
+
+ module_unneed( p_aout, p_aout->module );
+ p_aout->module = NULL;
+ aout_FiltersDestroyPipeline( p_aout->pp_filters, p_aout->i_nb_filters );
+ aout_FifoDestroy( &p_aout->fifo );
}
/*****************************************************************************
*****************************************************************************
* This function is entered with the mixer lock.
*****************************************************************************/
-void aout_OutputPlay( aout_instance_t * p_aout, aout_buffer_t * p_buffer )
+void aout_OutputPlay( audio_output_t * p_aout, aout_buffer_t * p_buffer )
+{
+ vlc_assert_locked( &p_aout->lock );
+
+ aout_FiltersPlay( p_aout->pp_filters, p_aout->i_nb_filters, &p_buffer );
+ if( !p_buffer )
+ return;
+ if( p_buffer->i_buffer == 0 )
+ {
+ block_Release( p_buffer );
+ return;
+ }
+
+ aout_FifoPush( &p_aout->fifo, p_buffer );
+ p_aout->pf_play( p_aout );
+}
+
+/**
+ * Notifies the audio output (if any) of pause/resume events.
+ * This enables the output to expedite pause, instead of waiting for its
+ * buffers to drain.
+ */
+void aout_OutputPause( audio_output_t *aout, bool pause, mtime_t date )
{
- aout_FiltersPlay( p_aout, p_aout->output.pp_filters,
- p_aout->output.i_nb_filters,
- &p_buffer );
-
- vlc_mutex_lock( &p_aout->output_fifo_lock );
- 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 );
+ vlc_assert_locked( &aout->lock );
+
+ if( aout->pf_pause != NULL )
+ aout->pf_pause( aout, pause, date );
}
/*****************************************************************************
* compensate it by itself. S/PDIF outputs should always set b_can_sleek = 1.
* This function is entered with no lock at all :-).
*****************************************************************************/
-aout_buffer_t * aout_OutputNextBuffer( aout_instance_t * p_aout,
+aout_buffer_t * aout_OutputNextBuffer( audio_output_t * p_aout,
mtime_t start_date,
- vlc_bool_t b_can_sleek )
+ bool b_can_sleek )
{
+ aout_fifo_t *p_fifo = &p_aout->fifo;
aout_buffer_t * p_buffer;
+ mtime_t now = mdate();
- vlc_mutex_lock( &p_aout->output_fifo_lock );
+ aout_lock( p_aout );
- p_buffer = p_aout->output.fifo.p_first;
- while ( p_buffer && p_buffer->start_date < mdate() )
+ /* 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_fifo->p_first) != NULL)
+ && p_buffer->i_pts < (b_can_sleek ? start_date : now) - AOUT_MAX_PTS_DELAY )
{
- 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 );
- p_buffer = p_buffer->p_next;
- aout_BufferFree( p_aout->output.fifo.p_first );
- p_aout->output.fifo.p_first = p_buffer;
+ msg_Dbg( p_aout, "audio output is too slow (%"PRId64"), "
+ "trashing %"PRId64"us", now - p_buffer->i_pts,
+ p_buffer->i_length );
+ aout_BufferFree( aout_FifoPop( p_fifo ) );
}
- if ( p_buffer == NULL )
+ if( p_buffer == NULL )
{
- 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 */
- aout_FifoSet( p_aout, &p_aout->output.fifo, 0 );
- if ( !p_aout->output.b_starving )
+ aout_FifoSet( &p_aout->fifo, 0 );
+ if ( !p_aout->b_starving )
msg_Dbg( p_aout,
"audio output is starving (no input), playing silence" );
- p_aout->output.b_starving = 1;
+ p_aout->b_starving = true;
#endif
-
- vlc_mutex_unlock( &p_aout->output_fifo_lock );
- return NULL;
+ goto out;
}
+ mtime_t delta = start_date - p_buffer->i_pts;
/* 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 ( 0 > delta + p_buffer->i_length )
{
- vlc_mutex_unlock( &p_aout->output_fifo_lock );
- if ( !p_aout->output.b_starving )
- msg_Dbg( p_aout, "audio output is starving ("I64Fd"), "
- "playing silence", p_buffer->start_date - start_date );
- p_aout->output.b_starving = 1;
- return NULL;
+ if ( !p_aout->b_starving )
+ msg_Dbg( p_aout, "audio output is starving (%"PRId64"), "
+ "playing silence", -delta );
+ p_aout->b_starving = true;
+ p_buffer = NULL;
+ goto out;
}
- p_aout->output.b_starving = 0;
+ p_aout->b_starving = false;
+ p_buffer = aout_FifoPop( p_fifo );
- if ( !b_can_sleek &&
- ( (p_buffer->start_date - start_date > AOUT_PTS_TOLERANCE)
- || (start_date - p_buffer->start_date > AOUT_PTS_TOLERANCE) ) )
+ if( !b_can_sleek
+ && ( delta > AOUT_MAX_PTS_DELAY || delta < -AOUT_MAX_PTS_ADVANCE ) )
{
/* Try to compensate the drift by doing some resampling. */
- int i;
- mtime_t difference = start_date - p_buffer->start_date;
msg_Warn( p_aout, "output date isn't PTS date, requesting "
- "resampling ("I64Fd")", difference );
-
- vlc_mutex_lock( &p_aout->input_fifos_lock );
- for ( i = 0; i < p_aout->i_nb_inputs; i++ )
- {
- aout_fifo_t * p_fifo = &p_aout->pp_inputs[i]->fifo;
+ "resampling (%"PRId64")", delta );
- 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_FifoMoveDates( &p_aout->p_input->mixer.fifo, delta );
+ aout_FifoMoveDates( p_fifo, delta );
}
-
- vlc_mutex_unlock( &p_aout->output_fifo_lock );
+out:
+ aout_unlock( p_aout );
return p_buffer;
}
projects / vlc / blobdiff