/*****************************************************************************
* OpenAudio: open a dummy audio device
*****************************************************************************/
int OpenAudio ( vlc_object_t * p_this )
{
aout_instance_t * p_aout = (aout_instance_t *)p_this;
p_aout->output.pf_play = Play;
p_aout->output.pf_pause = NULL;
aout_VolumeSoftInit( p_aout );
if( AOUT_FMT_NON_LINEAR( &p_aout->output.output )
&& var_InheritBool( p_this, "spdif" ) )
{
p_aout->output.output.i_format = VLC_CODEC_SPDIFL;
p_aout->output.output.i_bytes_per_frame = AOUT_SPDIF_SIZE;
p_aout->output.output.i_frame_length = A52_FRAME_NB;
}
else
p_aout->output.output.i_format =
HAVE_FPU ? VLC_CODEC_FL32 : VLC_CODEC_S16N;
p_aout->output.i_nb_samples = A52_FRAME_NB;
/* Create the variable for the audio-device */
var_Create( p_aout, "audio-device", VLC_VAR_INTEGER | VLC_VAR_HASCHOICE );
return VLC_SUCCESS;
}
/*****************************************************************************
* Create: allocate spdif mixer
*****************************************************************************/
static int Create( vlc_object_t *p_this )
{
aout_mixer_t *p_mixer = (aout_mixer_t *)p_this;
if ( !AOUT_FMT_NON_LINEAR(&p_mixer->fmt) )
{
return -1;
}
p_mixer->mix = DoWork;
/* This is a bit kludgy - do not ask for a new buffer, since the one
* provided by the first input will be good enough. */
p_mixer->allocation.b_alloc = false;
return 0;
}
/*****************************************************************************
* Create: allocate spdif mixer
*****************************************************************************/
static int Create( vlc_object_t *p_this )
{
aout_instance_t * p_aout = (aout_instance_t *)p_this;
if ( !AOUT_FMT_NON_LINEAR(&p_aout->mixer.mixer) )
{
return -1;
}
p_aout->mixer.pf_do_work = DoWork;
/* This is a bit kludgy - do not ask for a new buffer, since the one
* provided by the first input will be good enough. */
p_aout->mixer.output_alloc.i_alloc_type = AOUT_ALLOC_NONE;
return 0;
}
/*****************************************************************************
* MixBuffer: try to prepare one output buffer
*****************************************************************************
* Please note that you must hold the mixer lock.
*****************************************************************************/
static int MixBuffer( aout_instance_t * p_aout )
{
int i, i_first_input = 0;
aout_buffer_t * p_output_buffer;
mtime_t start_date, end_date;
audio_date_t exact_start_date;
if ( p_aout->mixer.b_error )
{
/* Free all incoming buffers. */
vlc_mutex_lock( &p_aout->input_fifos_lock );
for ( i = 0; i < p_aout->i_nb_inputs; i++ )
{
aout_input_t * p_input = p_aout->pp_inputs[i];
aout_buffer_t * p_buffer = p_input->fifo.p_first;
if ( p_input->b_error ) continue;
while ( p_buffer != NULL )
{
aout_buffer_t * p_next = p_buffer->p_next;
aout_BufferFree( p_buffer );
p_buffer = p_next;
}
}
vlc_mutex_unlock( &p_aout->input_fifos_lock );
return -1;
}
vlc_mutex_lock( &p_aout->output_fifo_lock );
vlc_mutex_lock( &p_aout->input_fifos_lock );
/* Retrieve the date of the next buffer. */
memcpy( &exact_start_date, &p_aout->output.fifo.end_date,
sizeof(audio_date_t) );
start_date = aout_DateGet( &exact_start_date );
if ( start_date != 0 && start_date < mdate() )
{
/* The output is _very_ late. This can only happen if the user
* pauses the stream (or if the decoder is buggy, which cannot
* happen :). */
msg_Warn( p_aout, "output PTS is out of range ("I64Fd"), clearing out",
mdate() - start_date );
aout_FifoSet( p_aout, &p_aout->output.fifo, 0 );
aout_DateSet( &exact_start_date, 0 );
start_date = 0;
}
vlc_mutex_unlock( &p_aout->output_fifo_lock );
/* See if we have enough data to prepare a new buffer for the audio
* output. First : start date. */
if ( !start_date )
{
/* Find the latest start date available. */
for ( i = 0; i < p_aout->i_nb_inputs; i++ )
{
aout_input_t * p_input = p_aout->pp_inputs[i];
aout_fifo_t * p_fifo = &p_input->fifo;
aout_buffer_t * p_buffer;
if ( p_input->b_error ) continue;
p_buffer = p_fifo->p_first;
while ( p_buffer != NULL && p_buffer->start_date < mdate() )
{
msg_Warn( p_aout, "input PTS is out of range ("I64Fd"), "
"trashing", mdate() - p_buffer->start_date );
p_buffer = aout_FifoPop( p_aout, p_fifo );
aout_BufferFree( p_buffer );
p_buffer = p_fifo->p_first;
p_input->p_first_byte_to_mix = NULL;
}
if ( p_buffer == NULL )
{
break;
}
if ( !start_date || start_date < p_buffer->start_date )
{
aout_DateSet( &exact_start_date, p_buffer->start_date );
start_date = p_buffer->start_date;
}
}
if ( i < p_aout->i_nb_inputs )
{
/* Interrupted before the end... We can't run. */
vlc_mutex_unlock( &p_aout->input_fifos_lock );
return -1;
}
}
aout_DateIncrement( &exact_start_date, p_aout->output.i_nb_samples );
end_date = aout_DateGet( &exact_start_date );
/* Check that start_date and end_date are available for all input
* streams. */
for ( i = 0; i < p_aout->i_nb_inputs; i++ )
{
aout_input_t * p_input = p_aout->pp_inputs[i];
aout_fifo_t * p_fifo = &p_input->fifo;
aout_buffer_t * p_buffer;
mtime_t prev_date;
vlc_bool_t b_drop_buffers;
if ( p_input->b_error )
{
if ( i_first_input == i ) i_first_input++;
continue;
}
p_buffer = p_fifo->p_first;
if ( p_buffer == NULL )
{
break;
}
/* Check for the continuity of start_date */
while ( p_buffer != NULL && p_buffer->end_date < start_date - 1 )
{
/* We authorize a +-1 because rounding errors get compensated
* regularly. */
aout_buffer_t * p_next = p_buffer->p_next;
msg_Warn( p_aout, "the mixer got a packet in the past ("I64Fd")",
start_date - p_buffer->end_date );
aout_BufferFree( p_buffer );
p_fifo->p_first = p_buffer = p_next;
p_input->p_first_byte_to_mix = NULL;
}
if ( p_buffer == NULL )
{
p_fifo->pp_last = &p_fifo->p_first;
break;
}
/* Check that we have enough samples. */
for ( ; ; )
{
p_buffer = p_fifo->p_first;
if ( p_buffer == NULL ) break;
if ( p_buffer->end_date >= end_date ) break;
/* Check that all buffers are contiguous. */
prev_date = p_fifo->p_first->end_date;
p_buffer = p_buffer->p_next;
b_drop_buffers = 0;
for ( ; p_buffer != NULL; p_buffer = p_buffer->p_next )
{
if ( prev_date != p_buffer->start_date )
{
msg_Warn( p_aout,
"buffer hole, dropping packets ("I64Fd")",
p_buffer->start_date - prev_date );
b_drop_buffers = 1;
break;
}
if ( p_buffer->end_date >= end_date ) break;
prev_date = p_buffer->end_date;
}
if ( b_drop_buffers )
{
aout_buffer_t * p_deleted = p_fifo->p_first;
while ( p_deleted != NULL && p_deleted != p_buffer )
{
aout_buffer_t * p_next = p_deleted->p_next;
aout_BufferFree( p_deleted );
p_deleted = p_next;
}
p_fifo->p_first = p_deleted; /* == p_buffer */
}
else break;
}
if ( p_buffer == NULL ) break;
p_buffer = p_fifo->p_first;
if ( !AOUT_FMT_NON_LINEAR( &p_aout->mixer.mixer ) )
{
/* Additionally check that p_first_byte_to_mix is well
* located. */
mtime_t i_nb_bytes = (start_date - p_buffer->start_date)
* p_aout->mixer.mixer.i_bytes_per_frame
* p_aout->mixer.mixer.i_rate
/ p_aout->mixer.mixer.i_frame_length
/ 1000000;
ptrdiff_t mixer_nb_bytes;
if ( p_input->p_first_byte_to_mix == NULL )
{
p_input->p_first_byte_to_mix = p_buffer->p_buffer;
}
mixer_nb_bytes = p_input->p_first_byte_to_mix - p_buffer->p_buffer;
if ( !((i_nb_bytes + p_aout->mixer.mixer.i_bytes_per_frame
> mixer_nb_bytes) &&
(i_nb_bytes < p_aout->mixer.mixer.i_bytes_per_frame
+ mixer_nb_bytes)) )
{
msg_Warn( p_aout, "mixer start isn't output start ("I64Fd")",
i_nb_bytes - mixer_nb_bytes );
/* Round to the nearest multiple */
i_nb_bytes /= p_aout->mixer.mixer.i_bytes_per_frame;
i_nb_bytes *= p_aout->mixer.mixer.i_bytes_per_frame;
if( i_nb_bytes < 0 )
{
/* Is it really the best way to do it ? */
aout_FifoSet( p_aout, &p_aout->output.fifo, 0 );
aout_DateSet( &exact_start_date, 0 );
break;
}
p_input->p_first_byte_to_mix = p_buffer->p_buffer + i_nb_bytes;
}
}
}
if ( i < p_aout->i_nb_inputs || i_first_input == p_aout->i_nb_inputs )
{
/* Interrupted before the end... We can't run. */
vlc_mutex_unlock( &p_aout->input_fifos_lock );
return -1;
}
/* Run the mixer. */
aout_BufferAlloc( &p_aout->mixer.output_alloc,
((uint64_t)p_aout->output.i_nb_samples * 1000000)
/ p_aout->output.output.i_rate,
/* This is a bit kludgy, but is actually only used
* for the S/PDIF dummy mixer : */
p_aout->pp_inputs[i_first_input]->fifo.p_first,
p_output_buffer );
if ( p_output_buffer == NULL )
{
msg_Err( p_aout, "out of memory" );
vlc_mutex_unlock( &p_aout->input_fifos_lock );
return -1;
}
/* This is again a bit kludgy - for the S/PDIF mixer. */
if ( p_aout->mixer.output_alloc.i_alloc_type != AOUT_ALLOC_NONE )
{
p_output_buffer->i_nb_samples = p_aout->output.i_nb_samples;
p_output_buffer->i_nb_bytes = p_aout->output.i_nb_samples
* p_aout->mixer.mixer.i_bytes_per_frame
/ p_aout->mixer.mixer.i_frame_length;
}
p_output_buffer->start_date = start_date;
p_output_buffer->end_date = end_date;
p_aout->mixer.pf_do_work( p_aout, p_output_buffer );
vlc_mutex_unlock( &p_aout->input_fifos_lock );
aout_OutputPlay( p_aout, p_output_buffer );
return 0;
}
/*****************************************************************************
* aout_InputNew : allocate a new input and rework the filter pipeline
*****************************************************************************/
int aout_InputNew( aout_instance_t * p_aout, aout_input_t * p_input, const aout_request_vout_t *p_request_vout )
{
audio_sample_format_t chain_input_format;
audio_sample_format_t chain_output_format;
vlc_value_t val, text;
char *psz_filters, *psz_visual, *psz_scaletempo;
int i_visual;
aout_FormatPrint( p_aout, "input", &p_input->input );
p_input->i_nb_resamplers = p_input->i_nb_filters = 0;
/* Prepare FIFO. */
aout_FifoInit( p_aout, &p_input->mixer.fifo, p_aout->mixer_format.i_rate );
p_input->mixer.begin = NULL;
/* */
if( p_request_vout )
{
p_input->request_vout = *p_request_vout;
}
else
{
p_input->request_vout.pf_request_vout = RequestVout;
p_input->request_vout.p_private = p_aout;
}
/* Prepare format structure */
chain_input_format = p_input->input;
chain_output_format = p_aout->mixer_format;
chain_output_format.i_rate = p_input->input.i_rate;
aout_FormatPrepare( &chain_output_format );
/* Now add user filters */
if( var_Type( p_aout, "visual" ) == 0 )
{
var_Create( p_aout, "visual", VLC_VAR_STRING | VLC_VAR_HASCHOICE );
text.psz_string = _("Visualizations");
var_Change( p_aout, "visual", VLC_VAR_SETTEXT, &text, NULL );
val.psz_string = (char*)""; text.psz_string = _("Disable");
var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
val.psz_string = (char*)"spectrometer"; text.psz_string = _("Spectrometer");
var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
val.psz_string = (char*)"scope"; text.psz_string = _("Scope");
var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
val.psz_string = (char*)"spectrum"; text.psz_string = _("Spectrum");
var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
val.psz_string = (char*)"vuMeter"; text.psz_string = _("Vu meter");
var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
/* Look for goom plugin */
if( module_exists( "goom" ) )
{
val.psz_string = (char*)"goom"; text.psz_string = (char*)"Goom";
var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
}
/* Look for libprojectM plugin */
if( module_exists( "projectm" ) )
{
val.psz_string = (char*)"projectm"; text.psz_string = (char*)"projectM";
var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
}
if( var_Get( p_aout, "effect-list", &val ) == VLC_SUCCESS )
{
var_SetString( p_aout, "visual", val.psz_string );
free( val.psz_string );
}
var_AddCallback( p_aout, "visual", VisualizationCallback, NULL );
}
if( var_Type( p_aout, "equalizer" ) == 0 )
{
module_config_t *p_config;
int i;
p_config = config_FindConfig( VLC_OBJECT(p_aout), "equalizer-preset" );
if( p_config && p_config->i_list )
{
var_Create( p_aout, "equalizer",
VLC_VAR_STRING | VLC_VAR_HASCHOICE );
text.psz_string = _("Equalizer");
var_Change( p_aout, "equalizer", VLC_VAR_SETTEXT, &text, NULL );
val.psz_string = (char*)""; text.psz_string = _("Disable");
var_Change( p_aout, "equalizer", VLC_VAR_ADDCHOICE, &val, &text );
for( i = 0; i < p_config->i_list; i++ )
{
val.psz_string = (char *)p_config->ppsz_list[i];
text.psz_string = (char *)p_config->ppsz_list_text[i];
var_Change( p_aout, "equalizer", VLC_VAR_ADDCHOICE,
&val, &text );
}
var_AddCallback( p_aout, "equalizer", EqualizerCallback, NULL );
}
}
if( var_Type( p_aout, "audio-filter" ) == 0 )
{
var_Create( p_aout, "audio-filter",
VLC_VAR_STRING | VLC_VAR_DOINHERIT );
text.psz_string = _("Audio filters");
var_Change( p_aout, "audio-filter", VLC_VAR_SETTEXT, &text, NULL );
}
if( var_Type( p_aout, "audio-visual" ) == 0 )
{
var_Create( p_aout, "audio-visual",
VLC_VAR_STRING | VLC_VAR_DOINHERIT );
text.psz_string = _("Audio visualizations");
var_Change( p_aout, "audio-visual", VLC_VAR_SETTEXT, &text, NULL );
}
if( var_Type( p_aout, "audio-replay-gain-mode" ) == 0 )
{
module_config_t *p_config;
int i;
p_config = config_FindConfig( VLC_OBJECT(p_aout), "audio-replay-gain-mode" );
if( p_config && p_config->i_list )
{
var_Create( p_aout, "audio-replay-gain-mode",
VLC_VAR_STRING | VLC_VAR_DOINHERIT );
text.psz_string = _("Replay gain");
var_Change( p_aout, "audio-replay-gain-mode", VLC_VAR_SETTEXT, &text, NULL );
for( i = 0; i < p_config->i_list; i++ )
{
val.psz_string = (char *)p_config->ppsz_list[i];
text.psz_string = (char *)p_config->ppsz_list_text[i];
var_Change( p_aout, "audio-replay-gain-mode", VLC_VAR_ADDCHOICE,
&val, &text );
}
var_AddCallback( p_aout, "audio-replay-gain-mode", ReplayGainCallback, NULL );
}
}
if( var_Type( p_aout, "audio-replay-gain-preamp" ) == 0 )
{
var_Create( p_aout, "audio-replay-gain-preamp",
VLC_VAR_FLOAT | VLC_VAR_DOINHERIT );
}
if( var_Type( p_aout, "audio-replay-gain-default" ) == 0 )
{
var_Create( p_aout, "audio-replay-gain-default",
VLC_VAR_FLOAT | VLC_VAR_DOINHERIT );
}
if( var_Type( p_aout, "audio-replay-gain-peak-protection" ) == 0 )
{
var_Create( p_aout, "audio-replay-gain-peak-protection",
VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
}
if( var_Type( p_aout, "audio-time-stretch" ) == 0 )
{
var_Create( p_aout, "audio-time-stretch",
VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
}
psz_filters = var_GetString( p_aout, "audio-filter" );
psz_visual = var_GetString( p_aout, "audio-visual");
psz_scaletempo = var_GetBool( p_aout, "audio-time-stretch" ) ? strdup( "scaletempo" ) : NULL;
p_input->b_recycle_vout = psz_visual && *psz_visual;
/* parse user filter lists */
char *const ppsz_array[] = { psz_scaletempo, psz_filters, psz_visual };
p_input->p_playback_rate_filter = NULL;
for( i_visual = 0; i_visual < 3 && !AOUT_FMT_NON_LINEAR(&chain_output_format); i_visual++ )
{
char *psz_next = NULL;
char *psz_parser = ppsz_array[i_visual];
if( psz_parser == NULL || !*psz_parser )
continue;
while( psz_parser && *psz_parser )
{
filter_t * p_filter = NULL;
if( p_input->i_nb_filters >= AOUT_MAX_FILTERS )
{
msg_Dbg( p_aout, "max filters reached (%d)", AOUT_MAX_FILTERS );
break;
}
while( *psz_parser == ' ' && *psz_parser == ':' )
{
psz_parser++;
}
if( ( psz_next = strchr( psz_parser , ':' ) ) )
{
*psz_next++ = '\0';
}
if( *psz_parser =='\0' )
{
break;
}
/* Create a VLC object */
static const char typename[] = "audio filter";
p_filter = vlc_custom_create( p_aout, sizeof(*p_filter),
VLC_OBJECT_GENERIC, typename );
if( p_filter == NULL )
{
msg_Err( p_aout, "cannot add user filter %s (skipped)",
psz_parser );
psz_parser = psz_next;
continue;
}
vlc_object_attach( p_filter , p_aout );
p_filter->p_owner = malloc( sizeof(*p_filter->p_owner) );
p_filter->p_owner->p_aout = p_aout;
p_filter->p_owner->p_input = p_input;
/* request format */
memcpy( &p_filter->fmt_in.audio, &chain_output_format,
sizeof(audio_sample_format_t) );
p_filter->fmt_in.i_codec = chain_output_format.i_format;
memcpy( &p_filter->fmt_out.audio, &chain_output_format,
sizeof(audio_sample_format_t) );
p_filter->fmt_out.i_codec = chain_output_format.i_format;
p_filter->pf_audio_buffer_new = aout_FilterBufferNew;
/* try to find the requested filter */
if( i_visual == 2 ) /* this can only be a visualization module */
{
p_filter->p_module = module_need( p_filter, "visualization2",
psz_parser, true );
}
else /* this can be a audio filter module as well as a visualization module */
{
p_filter->p_module = module_need( p_filter, "audio filter",
psz_parser, true );
if ( p_filter->p_module == NULL )
{
/* if the filter requested a special format, retry */
if ( !( AOUT_FMTS_IDENTICAL( &p_filter->fmt_in.audio,
&chain_input_format )
&& AOUT_FMTS_IDENTICAL( &p_filter->fmt_out.audio,
&chain_output_format ) ) )
{
aout_FormatPrepare( &p_filter->fmt_in.audio );
aout_FormatPrepare( &p_filter->fmt_out.audio );
p_filter->p_module = module_need( p_filter,
"audio filter",
psz_parser, true );
}
/* try visual filters */
else
{
memcpy( &p_filter->fmt_in.audio, &chain_output_format,
sizeof(audio_sample_format_t) );
memcpy( &p_filter->fmt_out.audio, &chain_output_format,
sizeof(audio_sample_format_t) );
p_filter->p_module = module_need( p_filter,
"visualization2",
psz_parser, true );
}
}
}
/* failure */
if ( p_filter->p_module == NULL )
{
msg_Err( p_aout, "cannot add user filter %s (skipped)",
psz_parser );
free( p_filter->p_owner );
vlc_object_release( p_filter );
psz_parser = psz_next;
continue;
}
/* complete the filter chain if necessary */
if ( !AOUT_FMTS_IDENTICAL( &chain_input_format,
&p_filter->fmt_in.audio ) )
{
if ( aout_FiltersCreatePipeline( p_aout, p_input->pp_filters,
&p_input->i_nb_filters,
&chain_input_format,
&p_filter->fmt_in.audio ) < 0 )
{
msg_Err( p_aout, "cannot add user filter %s (skipped)",
psz_parser );
module_unneed( p_filter, p_filter->p_module );
free( p_filter->p_owner );
vlc_object_release( p_filter );
psz_parser = psz_next;
continue;
}
}
/* success */
p_input->pp_filters[p_input->i_nb_filters++] = p_filter;
memcpy( &chain_input_format, &p_filter->fmt_out.audio,
sizeof( audio_sample_format_t ) );
if( i_visual == 0 ) /* scaletempo */
p_input->p_playback_rate_filter = p_filter;
/* next filter if any */
psz_parser = psz_next;
}
}
free( psz_visual );
free( psz_filters );
free( psz_scaletempo );
/* complete the filter chain if necessary */
if ( !AOUT_FMTS_IDENTICAL( &chain_input_format, &chain_output_format ) )
{
if ( aout_FiltersCreatePipeline( p_aout, p_input->pp_filters,
&p_input->i_nb_filters,
&chain_input_format,
&chain_output_format ) < 0 )
{
inputFailure( p_aout, p_input, "couldn't set an input pipeline" );
return -1;
}
}
/* Prepare hints for the buffer allocator. */
p_input->input_alloc.b_alloc = true;
p_input->input_alloc.i_bytes_per_sec = -1;
/* Create resamplers. */
if ( !AOUT_FMT_NON_LINEAR( &p_aout->mixer_format ) )
{
chain_output_format.i_rate = (__MAX(p_input->input.i_rate,
p_aout->mixer_format.i_rate)
* (100 + AOUT_MAX_RESAMPLING)) / 100;
if ( chain_output_format.i_rate == p_aout->mixer_format.i_rate )
{
/* Just in case... */
chain_output_format.i_rate++;
}
if ( aout_FiltersCreatePipeline( p_aout, p_input->pp_resamplers,
&p_input->i_nb_resamplers,
&chain_output_format,
&p_aout->mixer_format ) < 0 )
{
inputFailure( p_aout, p_input, "couldn't set a resampler pipeline");
return -1;
}
aout_FiltersHintBuffers( p_aout, p_input->pp_resamplers,
p_input->i_nb_resamplers,
&p_input->input_alloc );
p_input->input_alloc.b_alloc = true;
/* Setup the initial rate of the resampler */
p_input->pp_resamplers[0]->fmt_in.audio.i_rate = p_input->input.i_rate;
}
p_input->i_resampling_type = AOUT_RESAMPLING_NONE;
if( ! p_input->p_playback_rate_filter && p_input->i_nb_resamplers > 0 )
{
p_input->p_playback_rate_filter = p_input->pp_resamplers[0];
}
aout_FiltersHintBuffers( p_aout, p_input->pp_filters,
p_input->i_nb_filters,
&p_input->input_alloc );
p_input->input_alloc.b_alloc = true;
/* i_bytes_per_sec is still == -1 if no filters */
p_input->input_alloc.i_bytes_per_sec = __MAX(
p_input->input_alloc.i_bytes_per_sec,
(int)(p_input->input.i_bytes_per_frame
* p_input->input.i_rate
/ p_input->input.i_frame_length) );
ReplayGainSelect( p_aout, p_input );
/* Success */
p_input->b_error = false;
p_input->i_last_input_rate = INPUT_RATE_DEFAULT;
return 0;
}
/*****************************************************************************
* Open: open a dummy audio device
*****************************************************************************/
static int Open( vlc_object_t * p_this )
{
aout_instance_t * p_aout = (aout_instance_t *)p_this;
char * psz_name, * psz_format;
const char * const * ppsz_compare = format_list;
int i_channels, i = 0;
psz_name = var_CreateGetString( p_this, "audiofile-file" );
if( !psz_name || !*psz_name )
{
msg_Err( p_aout, "you need to specify an output file name" );
free( psz_name );
return VLC_EGENERIC;
}
/* Allocate structure */
p_aout->output.p_sys = malloc( sizeof( aout_sys_t ) );
if( p_aout->output.p_sys == NULL )
return VLC_ENOMEM;
if( !strcmp( psz_name, "-" ) )
p_aout->output.p_sys->p_file = stdout;
else
p_aout->output.p_sys->p_file = utf8_fopen( psz_name, "wb" );
free( psz_name );
if ( p_aout->output.p_sys->p_file == NULL )
{
free( p_aout->output.p_sys );
return VLC_EGENERIC;
}
p_aout->output.pf_play = Play;
/* Audio format */
psz_format = var_CreateGetString( p_this, "audiofile-format" );
while ( *ppsz_compare != NULL )
{
if ( !strncmp( *ppsz_compare, psz_format, strlen(*ppsz_compare) ) )
{
break;
}
ppsz_compare++; i++;
}
if ( *ppsz_compare == NULL )
{
msg_Err( p_aout, "cannot understand the format string (%s)",
psz_format );
if( p_aout->output.p_sys->p_file != stdout )
fclose( p_aout->output.p_sys->p_file );
free( p_aout->output.p_sys );
free( psz_format );
return VLC_EGENERIC;
}
free( psz_format );
p_aout->output.output.i_format = format_int[i];
if ( AOUT_FMT_NON_LINEAR( &p_aout->output.output ) )
{
p_aout->output.i_nb_samples = A52_FRAME_NB;
p_aout->output.output.i_bytes_per_frame = AOUT_SPDIF_SIZE;
p_aout->output.output.i_frame_length = A52_FRAME_NB;
aout_VolumeNoneInit( p_aout );
}
else
{
p_aout->output.i_nb_samples = FRAME_SIZE;
aout_VolumeSoftInit( p_aout );
}
/* Channels number */
i_channels = var_CreateGetInteger( p_this, "audiofile-channels" );
if( i_channels > 0 && i_channels <= CHANNELS_MAX )
{
p_aout->output.output.i_physical_channels =
pi_channels_maps[i_channels];
}
/* WAV header */
p_aout->output.p_sys->b_add_wav_header = var_CreateGetBool( p_this,
"audiofile-wav" );
if( p_aout->output.p_sys->b_add_wav_header )
{
/* Write wave header */
WAVEHEADER *wh = &p_aout->output.p_sys->waveh;
memset( wh, 0, sizeof(wh) );
switch( p_aout->output.output.i_format )
{
case VLC_CODEC_FL32:
wh->Format = WAVE_FORMAT_IEEE_FLOAT;
wh->BitsPerSample = sizeof(float) * 8;
break;
case VLC_CODEC_U8:
wh->Format = WAVE_FORMAT_PCM;
wh->BitsPerSample = 8;
break;
case VLC_CODEC_S16L:
default:
wh->Format = WAVE_FORMAT_PCM;
wh->BitsPerSample = 16;
break;
}
wh->MainChunkID = VLC_FOURCC('R', 'I', 'F', 'F');
wh->Length = 0; /* temp, to be filled in as we go */
wh->ChunkTypeID = VLC_FOURCC('W', 'A', 'V', 'E');
wh->SubChunkID = VLC_FOURCC('f', 'm', 't', ' ');
wh->SubChunkLength = 16;
wh->Modus = aout_FormatNbChannels( &p_aout->output.output );
wh->SampleFreq = p_aout->output.output.i_rate;
wh->BytesPerSample = wh->Modus * ( wh->BitsPerSample / 8 );
wh->BytesPerSec = wh->BytesPerSample * wh->SampleFreq;
wh->DataChunkID = VLC_FOURCC('d', 'a', 't', 'a');
wh->DataLength = 0; /* temp, to be filled in as we go */
/* Header -> little endian format */
SetWLE( &wh->Format, wh->Format );
SetWLE( &wh->BitsPerSample, wh->BitsPerSample );
SetDWLE( &wh->SubChunkLength, wh->SubChunkLength );
SetWLE( &wh->Modus, wh->Modus );
SetDWLE( &wh->SampleFreq, wh->SampleFreq );
SetWLE( &wh->BytesPerSample, wh->BytesPerSample );
SetDWLE( &wh->BytesPerSec, wh->BytesPerSec );
if( fwrite( wh, sizeof(WAVEHEADER), 1,
p_aout->output.p_sys->p_file ) != 1 )
{
msg_Err( p_aout, "write error (%m)" );
}
}
return 0;
}
/*****************************************************************************
* aout_OutputNew : allocate a new output and rework the filter pipeline
*****************************************************************************
* This function is entered with the mixer lock.
*****************************************************************************/
int aout_OutputNew( aout_instance_t * p_aout,
audio_sample_format_t * p_format )
{
/* Retrieve user defaults. */
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;
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 );
/* Find the best output plug-in. */
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 audio output module" );
return -1;
}
if ( var_Type( p_aout, "audio-channels" ) ==
(VLC_VAR_INTEGER | VLC_VAR_HASCHOICE) )
{
/* The user may have selected a different channels configuration. */
var_Get( p_aout, "audio-channels", &val );
if ( val.i_int == AOUT_VAR_CHAN_RSTEREO )
{
p_aout->output.output.i_original_channels |=
AOUT_CHAN_REVERSESTEREO;
}
else if ( val.i_int == AOUT_VAR_CHAN_STEREO )
{
p_aout->output.output.i_original_channels =
AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
}
else if ( val.i_int == AOUT_VAR_CHAN_LEFT )
{
p_aout->output.output.i_original_channels = AOUT_CHAN_LEFT;
}
else if ( val.i_int == AOUT_VAR_CHAN_RIGHT )
{
p_aout->output.output.i_original_channels = AOUT_CHAN_RIGHT;
}
else if ( val.i_int == AOUT_VAR_CHAN_DOLBYS )
{
p_aout->output.output.i_original_channels
= AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_DOLBYSTEREO;
}
}
else if ( p_aout->output.output.i_physical_channels == AOUT_CHAN_CENTER
&& (p_aout->output.output.i_original_channels
& AOUT_CHAN_PHYSMASK) == (AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT) )
{
/* Mono - create the audio-channels variable. */
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->output.output.i_original_channels & AOUT_CHAN_DUALMONO )
{
/* Go directly to the left channel. */
p_aout->output.output.i_original_channels = AOUT_CHAN_LEFT;
var_SetInteger( p_aout, "audio-channels", AOUT_VAR_CHAN_LEFT );
}
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)) )
{
/* Stereo - create the audio-channels variable. */
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->output.output.i_original_channels & AOUT_CHAN_DOLBYSTEREO )
{
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->output.output.i_original_channels & AOUT_CHAN_DUALMONO )
{
/* Go directly to the left channel. */
p_aout->output.output.i_original_channels = AOUT_CHAN_LEFT;
var_SetInteger( p_aout, "audio-channels", AOUT_VAR_CHAN_LEFT );
}
var_AddCallback( p_aout, "audio-channels", aout_ChannelsRestart,
NULL );
}
var_SetBool( p_aout, "intf-change", true );
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 );
aout_unlock_output_fifo( p_aout );
aout_FormatPrint( p_aout, "output", &p_aout->output.output );
/* Calculate the resulting mixer output format. */
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_format.i_format
= HAVE_FPU ? VLC_CODEC_FL32 : VLC_CODEC_FI32;
aout_FormatPrepare( &p_aout->mixer_format );
}
else
{
p_aout->mixer_format.i_format = p_format->i_format;
}
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_format,
&p_aout->output.output ) < 0 )
{
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_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_allocation );
p_aout->output.b_error = 0;
return 0;
}
/*****************************************************************************
* Probe: probe the audio device for available formats and channels
*****************************************************************************/
static void Probe( aout_instance_t * p_aout )
{
vlc_value_t val, text;
int i_format;
unsigned int i_physical_channels;
var_Create( p_aout, "audio-device", VLC_VAR_INTEGER | VLC_VAR_HASCHOICE );
text.psz_string = _("Audio Device");
var_Change( p_aout, "audio-device", VLC_VAR_SETTEXT, &text, NULL );
/* Test for 5.1 support */
i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT |
AOUT_CHAN_CENTER | AOUT_CHAN_REARLEFT |
AOUT_CHAN_REARRIGHT | AOUT_CHAN_LFE;
if( p_aout->output.output.i_physical_channels == i_physical_channels )
{
if( OpenWaveOutPCM( p_aout, &i_format,
i_physical_channels, 6,
p_aout->output.output.i_rate, VLC_TRUE )
== VLC_SUCCESS )
{
val.i_int = AOUT_VAR_5_1;
text.psz_string = N_("5.1");
var_Change( p_aout, "audio-device",
VLC_VAR_ADDCHOICE, &val, &text );
msg_Dbg( p_aout, "device supports 5.1 channels" );
}
}
/* Test for 2 Front 2 Rear support */
i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT |
AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT;
if( ( p_aout->output.output.i_physical_channels & i_physical_channels )
== i_physical_channels )
{
if( OpenWaveOutPCM( p_aout, &i_format,
i_physical_channels, 4,
p_aout->output.output.i_rate, VLC_TRUE )
== VLC_SUCCESS )
{
val.i_int = AOUT_VAR_2F2R;
text.psz_string = N_("2 Front 2 Rear");
var_Change( p_aout, "audio-device",
VLC_VAR_ADDCHOICE, &val, &text );
msg_Dbg( p_aout, "device supports 4 channels" );
}
}
/* Test for stereo support */
i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
if( OpenWaveOutPCM( p_aout, &i_format,
i_physical_channels, 2,
p_aout->output.output.i_rate, VLC_TRUE )
== VLC_SUCCESS )
{
val.i_int = AOUT_VAR_STEREO;
text.psz_string = N_("Stereo");
var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val, &text );
msg_Dbg( p_aout, "device supports 2 channels" );
}
/* Test for mono support */
i_physical_channels = AOUT_CHAN_CENTER;
if( OpenWaveOutPCM( p_aout, &i_format,
i_physical_channels, 1,
p_aout->output.output.i_rate, VLC_TRUE )
== VLC_SUCCESS )
{
val.i_int = AOUT_VAR_MONO;
text.psz_string = N_("Mono");
var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val, &text );
msg_Dbg( p_aout, "device supports 1 channel" );
}
/* Test for SPDIF support */
if ( AOUT_FMT_NON_LINEAR( &p_aout->output.output ) )
{
if( OpenWaveOut( p_aout, VLC_FOURCC('s','p','d','i'),
p_aout->output.output.i_physical_channels,
aout_FormatNbChannels( &p_aout->output.output ),
p_aout->output.output.i_rate, VLC_TRUE )
== VLC_SUCCESS )
{
msg_Dbg( p_aout, "device supports A/52 over S/PDIF" );
val.i_int = AOUT_VAR_SPDIF;
text.psz_string = N_("A/52 over S/PDIF");
var_Change( p_aout, "audio-device",
VLC_VAR_ADDCHOICE, &val, &text );
if( config_GetInt( p_aout, "spdif" ) )
var_Set( p_aout, "audio-device", val );
}
}
var_Change( p_aout, "audio-device", VLC_VAR_CHOICESCOUNT, &val, NULL );
if( val.i_int <= 0 )
{
/* Probe() has failed. */
var_Destroy( p_aout, "audio-device" );
return;
}
var_AddCallback( p_aout, "audio-device", aout_ChannelsRestart, NULL );
val.b_bool = VLC_TRUE;
var_Set( p_aout, "intf-change", val );
}
/*****************************************************************************
* Open: open the audio device (the digital sound processor)
*****************************************************************************
* This function opens the DSP as a usual non-blocking write-only file, and
* modifies the p_aout->p_sys->i_fd with the file's descriptor.
*****************************************************************************/
static int Open( vlc_object_t *p_this )
{
aout_instance_t * p_aout = (aout_instance_t *)p_this;
struct aout_sys_t * p_sys;
char * psz_device;
vlc_value_t val;
/* Allocate structure */
p_aout->output.p_sys = p_sys = malloc( sizeof( aout_sys_t ) );
if( p_sys == NULL )
{
msg_Err( p_aout, "out of memory" );
return VLC_ENOMEM;
}
/* Get device name */
if( (psz_device = config_GetPsz( p_aout, "dspdev" )) == NULL )
{
msg_Err( p_aout, "no audio device specified (maybe /dev/dsp?)" );
free( p_sys );
return VLC_EGENERIC;
}
/* Open the sound device in non-blocking mode, because ALSA's OSS
* emulation and some broken OSS drivers would make a blocking call
* wait forever until the device is available. Since this breaks the
* OSS spec, we immediately put it back to blocking mode if the
* operation was successful. */
p_sys->i_fd = open( psz_device, O_WRONLY | O_NDELAY );
if( p_sys->i_fd < 0 )
{
msg_Err( p_aout, "cannot open audio device (%s)", psz_device );
free( p_sys );
return VLC_EGENERIC;
}
/* if the opening was ok, put the device back in blocking mode */
fcntl( p_sys->i_fd, F_SETFL,
fcntl( p_sys->i_fd, F_GETFL ) &~ FNDELAY );
free( psz_device );
p_aout->output.pf_play = Play;
if ( var_Type( p_aout, "audio-device" ) == 0 )
{
Probe( p_aout );
}
if ( var_Get( p_aout, "audio-device", &val ) < 0 )
{
/* Probe() has failed. */
free( p_sys );
return VLC_EGENERIC;
}
if ( val.i_int == AOUT_VAR_SPDIF )
{
p_aout->output.output.i_format = VLC_FOURCC('s','p','d','i');
}
else if ( val.i_int == AOUT_VAR_5_1 )
{
p_aout->output.output.i_format = AOUT_FMT_S16_NE;
p_aout->output.output.i_physical_channels
= AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
| AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT
| AOUT_CHAN_LFE;
}
else if ( val.i_int == AOUT_VAR_2F2R )
{
p_aout->output.output.i_format = AOUT_FMT_S16_NE;
p_aout->output.output.i_physical_channels
= AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT
| AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT;
}
else if ( val.i_int == AOUT_VAR_STEREO )
{
p_aout->output.output.i_format = AOUT_FMT_S16_NE;
p_aout->output.output.i_physical_channels
= AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
}
else if ( val.i_int == AOUT_VAR_MONO )
{
p_aout->output.output.i_format = AOUT_FMT_S16_NE;
p_aout->output.output.i_physical_channels = AOUT_CHAN_CENTER;
}
else
{
/* This should not happen ! */
msg_Err( p_aout, "internal: can't find audio-device (%i)", val.i_int );
free( p_sys );
return VLC_EGENERIC;
}
val.b_bool = VLC_TRUE;
var_Set( p_aout, "intf-change", val );
/* Reset the DSP device */
if( ioctl( p_sys->i_fd, SNDCTL_DSP_RESET, NULL ) < 0 )
{
msg_Err( p_aout, "cannot reset OSS audio device" );
close( p_sys->i_fd );
free( p_sys );
return VLC_EGENERIC;
}
/* Set the output format */
if ( AOUT_FMT_NON_LINEAR( &p_aout->output.output ) )
{
int i_format = AFMT_AC3;
if( ioctl( p_sys->i_fd, SNDCTL_DSP_SETFMT, &i_format ) < 0
|| i_format != AFMT_AC3 )
{
msg_Err( p_aout, "cannot reset OSS audio device" );
close( p_sys->i_fd );
free( p_sys );
return VLC_EGENERIC;
}
p_aout->output.output.i_format = VLC_FOURCC('s','p','d','i');
p_aout->output.i_nb_samples = A52_FRAME_NB;
p_aout->output.output.i_bytes_per_frame = AOUT_SPDIF_SIZE;
p_aout->output.output.i_frame_length = A52_FRAME_NB;
aout_VolumeNoneInit( p_aout );
}
if ( !AOUT_FMT_NON_LINEAR( &p_aout->output.output ) )
{
unsigned int i_format = AFMT_S16_NE;
unsigned int i_frame_size, i_fragments;
unsigned int i_rate;
unsigned int i_nb_channels;
audio_buf_info audio_buf;
if( ioctl( p_sys->i_fd, SNDCTL_DSP_SETFMT, &i_format ) < 0 )
{
msg_Err( p_aout, "cannot set audio output format" );
close( p_sys->i_fd );
free( p_sys );
return VLC_EGENERIC;
}
switch ( i_format )
{
case AFMT_U8:
p_aout->output.output.i_format = VLC_FOURCC('u','8',' ',' ');
break;
case AFMT_S8:
p_aout->output.output.i_format = VLC_FOURCC('s','8',' ',' ');
break;
case AFMT_U16_LE:
p_aout->output.output.i_format = VLC_FOURCC('u','1','6','l');
break;
case AFMT_S16_LE:
p_aout->output.output.i_format = VLC_FOURCC('s','1','6','l');
break;
case AFMT_U16_BE:
p_aout->output.output.i_format = VLC_FOURCC('u','1','6','b');
break;
case AFMT_S16_BE:
p_aout->output.output.i_format = VLC_FOURCC('s','1','6','b');
break;
default:
msg_Err( p_aout, "OSS fell back to an unknown format (%d)",
i_format );
close( p_sys->i_fd );
free( p_sys );
return VLC_EGENERIC;
}
i_nb_channels = aout_FormatNbChannels( &p_aout->output.output );
/* Set the number of channels */
if( ioctl( p_sys->i_fd, SNDCTL_DSP_CHANNELS, &i_nb_channels ) < 0 ||
i_nb_channels != aout_FormatNbChannels( &p_aout->output.output ) )
{
msg_Err( p_aout, "cannot set number of audio channels (%s)",
aout_FormatPrintChannels( &p_aout->output.output) );
close( p_sys->i_fd );
free( p_sys );
return VLC_EGENERIC;
}
/* Set the output rate */
i_rate = p_aout->output.output.i_rate;
if( ioctl( p_sys->i_fd, SNDCTL_DSP_SPEED, &i_rate ) < 0 )
{
msg_Err( p_aout, "cannot set audio output rate (%i)",
p_aout->output.output.i_rate );
close( p_sys->i_fd );
free( p_sys );
return VLC_EGENERIC;
}
if( i_rate != p_aout->output.output.i_rate )
{
p_aout->output.output.i_rate = i_rate;
}
/* Set the fragment size */
aout_FormatPrepare( &p_aout->output.output );
/* i_fragment = xxxxyyyy where: xxxx is fragtotal
* 1 << yyyy is fragsize */
i_fragments = 0;
i_frame_size = FRAME_SIZE * p_aout->output.output.i_bytes_per_frame;
while( i_frame_size >>= 1 )
{
++i_fragments;
}
i_fragments |= FRAME_COUNT << 16;
if( ioctl( p_sys->i_fd, SNDCTL_DSP_SETFRAGMENT, &i_fragments ) < 0 )
{
msg_Warn( p_aout, "cannot set fragment size (%.8x)", i_fragments );
}
if( ioctl( p_sys->i_fd, SNDCTL_DSP_GETOSPACE, &audio_buf ) < 0 )
{
msg_Err( p_aout, "cannot get fragment size" );
close( p_sys->i_fd );
free( p_sys );
return VLC_EGENERIC;
}
else
{
/* Number of fragments actually allocated */
p_aout->output.p_sys->i_fragstotal = audio_buf.fragstotal;
/* Maximum duration the soundcard's buffer can hold */
p_aout->output.p_sys->max_buffer_duration =
(mtime_t)audio_buf.fragstotal * audio_buf.fragsize * 1000000
/ p_aout->output.output.i_bytes_per_frame
/ p_aout->output.output.i_rate
* p_aout->output.output.i_frame_length;
p_aout->output.i_nb_samples = audio_buf.fragsize /
p_aout->output.output.i_bytes_per_frame;
}
aout_VolumeSoftInit( p_aout );
}
/*****************************************************************************
* Probe: probe the audio device for available formats and channels
*****************************************************************************/
static void Probe( aout_instance_t * p_aout )
{
struct aout_sys_t * p_sys = p_aout->output.p_sys;
vlc_value_t val, text;
int i_format, i_nb_channels;
var_Create( p_aout, "audio-device", VLC_VAR_INTEGER | VLC_VAR_HASCHOICE );
text.psz_string = _("Audio Device");
var_Change( p_aout, "audio-device", VLC_VAR_SETTEXT, &text, NULL );
/* Test for multi-channel. */
#ifdef SNDCTL_DSP_GETCHANNELMASK
if ( aout_FormatNbChannels( &p_aout->output.output ) > 2 )
{
/* Check that the device supports this. */
int i_chanmask;
/* Reset all. */
i_format = AFMT_S16_NE;
if( ioctl( p_sys->i_fd, SNDCTL_DSP_RESET, NULL ) < 0 ||
ioctl( p_sys->i_fd, SNDCTL_DSP_SETFMT, &i_format ) < 0 )
{
msg_Err( p_aout, "cannot reset OSS audio device" );
var_Destroy( p_aout, "audio-device" );
return;
}
if ( ioctl( p_sys->i_fd, SNDCTL_DSP_GETCHANNELMASK,
&i_chanmask ) == 0 )
{
if ( !(i_chanmask & DSP_BIND_FRONT) )
{
msg_Err( p_aout, "No front channels ! (%x)",
i_chanmask );
return;
}
if ( (i_chanmask & (DSP_BIND_SURR | DSP_BIND_CENTER_LFE))
&& (p_aout->output.output.i_physical_channels ==
(AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
| AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT
| AOUT_CHAN_LFE)) )
{
val.i_int = AOUT_VAR_5_1;
text.psz_string = N_("5.1");
var_Change( p_aout, "audio-device",
VLC_VAR_ADDCHOICE, &val, &text );
}
if ( (i_chanmask & DSP_BIND_SURR)
&& (p_aout->output.output.i_physical_channels &
(AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT
| AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT)) )
{
val.i_int = AOUT_VAR_2F2R;
text.psz_string = N_("2 Front 2 Rear");
var_Change( p_aout, "audio-device",
VLC_VAR_ADDCHOICE, &val, &text );
}
}
}
#endif
/* Reset all. */
i_format = AFMT_S16_NE;
if( ioctl( p_sys->i_fd, SNDCTL_DSP_RESET, NULL ) < 0 ||
ioctl( p_sys->i_fd, SNDCTL_DSP_SETFMT, &i_format ) < 0 )
{
msg_Err( p_aout, "cannot reset OSS audio device" );
var_Destroy( p_aout, "audio-device" );
return;
}
/* Test for stereo. */
i_nb_channels = 2;
if( ioctl( p_sys->i_fd, SNDCTL_DSP_CHANNELS, &i_nb_channels ) >= 0
&& i_nb_channels == 2 )
{
val.i_int = AOUT_VAR_STEREO;
text.psz_string = N_("Stereo");
var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val, &text );
}
/* Reset all. */
i_format = AFMT_S16_NE;
if( ioctl( p_sys->i_fd, SNDCTL_DSP_RESET, NULL ) < 0 ||
ioctl( p_sys->i_fd, SNDCTL_DSP_SETFMT, &i_format ) < 0 )
{
msg_Err( p_aout, "cannot reset OSS audio device" );
var_Destroy( p_aout, "audio-device" );
return;
}
/* Test for mono. */
i_nb_channels = 1;
if( ioctl( p_sys->i_fd, SNDCTL_DSP_CHANNELS, &i_nb_channels ) >= 0
&& i_nb_channels == 1 )
{
val.i_int = AOUT_VAR_MONO;
text.psz_string = N_("Mono");
var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val, &text );
if ( p_aout->output.output.i_physical_channels == AOUT_CHAN_CENTER )
{
var_Set( p_aout, "audio-device", val );
}
}
if( ioctl( p_sys->i_fd, SNDCTL_DSP_RESET, NULL ) < 0 )
{
msg_Err( p_aout, "cannot reset OSS audio device" );
var_Destroy( p_aout, "audio-device" );
return;
}
/* Test for spdif. */
if ( AOUT_FMT_NON_LINEAR( &p_aout->output.output ) )
{
i_format = AFMT_AC3;
if( ioctl( p_sys->i_fd, SNDCTL_DSP_SETFMT, &i_format ) >= 0
&& i_format == AFMT_AC3 )
{
val.i_int = AOUT_VAR_SPDIF;
text.psz_string = N_("A/52 over S/PDIF");
var_Change( p_aout, "audio-device",
VLC_VAR_ADDCHOICE, &val, &text );
if( config_GetInt( p_aout, "spdif" ) )
var_Set( p_aout, "audio-device", val );
}
else if( config_GetInt( p_aout, "spdif" ) )
{
msg_Warn( p_aout, "s/pdif not supported by card" );
}
}
var_AddCallback( p_aout, "audio-device", aout_ChannelsRestart,
NULL );
}
/*****************************************************************************
* Open: create a handle and open an alsa device
*****************************************************************************
* This function opens an alsa device, through the alsa API.
*
* Note: the only heap-allocated string is psz_device. All the other pointers
* are references to psz_device or to stack-allocated data.
*****************************************************************************/
static int Open( vlc_object_t *p_this )
{
aout_instance_t * p_aout = (aout_instance_t *)p_this;
struct aout_sys_t * p_sys;
vlc_value_t val;
char psz_default_iec_device[128]; /* Buffer used to store the default
S/PDIF device */
char * psz_device, * psz_iec_device; /* device names for PCM and S/PDIF
output */
int i_vlc_pcm_format; /* Audio format for VLC's data */
int i_snd_pcm_format; /* Audio format for ALSA's data */
snd_pcm_uframes_t i_buffer_size = 0;
snd_pcm_uframes_t i_period_size = 0;
int i_channels = 0;
snd_pcm_hw_params_t *p_hw;
snd_pcm_sw_params_t *p_sw;
int i_snd_rc = -1;
unsigned int i_old_rate;
bool b_retry = true;
/* Allocate structures */
p_aout->output.p_sys = p_sys = malloc( sizeof( aout_sys_t ) );
if( p_sys == NULL )
return VLC_ENOMEM;
p_sys->b_playing = false;
p_sys->start_date = 0;
vlc_cond_init( &p_sys->wait );
vlc_mutex_init( &p_sys->lock );
/* Get device name */
if( (psz_device = config_GetPsz( p_aout, "alsa-audio-device" )) == NULL )
{
msg_Err( p_aout, "no audio device given (maybe \"default\" ?)" );
dialog_Fatal( p_aout, _("No Audio Device"), "%s",
_("No audio device name was given. You might want to " \
"enter \"default\".") );
free( p_sys );
return VLC_EGENERIC;
}
/* Choose the IEC device for S/PDIF output:
if the device is overriden by the user then it will be the one
otherwise we compute the default device based on the output format. */
if( AOUT_FMT_NON_LINEAR( &p_aout->output.output )
&& !strcmp( psz_device, DEFAULT_ALSA_DEVICE ) )
{
snprintf( psz_default_iec_device, sizeof(psz_default_iec_device),
"iec958:AES0=0x%x,AES1=0x%x,AES2=0x%x,AES3=0x%x",
IEC958_AES0_CON_EMPHASIS_NONE | IEC958_AES0_NONAUDIO,
IEC958_AES1_CON_ORIGINAL | IEC958_AES1_CON_PCM_CODER,
0,
( p_aout->output.output.i_rate == 48000 ?
IEC958_AES3_CON_FS_48000 :
( p_aout->output.output.i_rate == 44100 ?
IEC958_AES3_CON_FS_44100 : IEC958_AES3_CON_FS_32000 ) ) );
psz_iec_device = psz_default_iec_device;
}
else if( AOUT_FMT_NON_LINEAR( &p_aout->output.output ) )
{
psz_iec_device = psz_device;
}
else
{
psz_iec_device = NULL;
}
/* Choose the linear PCM format (read the comment above about FPU
and float32) */
if( vlc_CPU() & CPU_CAPABILITY_FPU )
{
i_vlc_pcm_format = VLC_CODEC_FL32;
i_snd_pcm_format = SND_PCM_FORMAT_FLOAT;
}
else
{
i_vlc_pcm_format = VLC_CODEC_S16N;
i_snd_pcm_format = SND_PCM_FORMAT_S16;
}
/* If the variable doesn't exist then it's the first time we're called
and we have to probe the available audio formats and channels */
if ( var_Type( p_aout, "audio-device" ) == 0 )
{
Probe( p_aout, psz_device, psz_iec_device, &i_snd_pcm_format );
}
if ( var_Get( p_aout, "audio-device", &val ) < 0 )
{
free( p_sys );
free( psz_device );
return VLC_EGENERIC;
}
p_aout->output.output.i_format = i_vlc_pcm_format;
if ( val.i_int == AOUT_VAR_5_1 )
{
p_aout->output.output.i_physical_channels
= AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
| AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT
| AOUT_CHAN_LFE;
free( psz_device );
psz_device = strdup( "surround51" );
}
else if ( val.i_int == AOUT_VAR_2F2R )
{
p_aout->output.output.i_physical_channels
= AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT
| AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT;
free( psz_device );
psz_device = strdup( "surround40" );
}
else if ( val.i_int == AOUT_VAR_STEREO )
{
p_aout->output.output.i_physical_channels
= AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
}
else if ( val.i_int == AOUT_VAR_MONO )
{
p_aout->output.output.i_physical_channels = AOUT_CHAN_CENTER;
}
else if( val.i_int != AOUT_VAR_SPDIF )
{
/* This should not happen ! */
msg_Err( p_aout, "internal: can't find audio-device (%i)", val.i_int );
free( p_sys );
free( psz_device );
return VLC_EGENERIC;
}
#ifdef ALSA_DEBUG
snd_output_stdio_attach( &p_sys->p_snd_stderr, stderr, 0 );
#endif
/* Open the device */
if ( val.i_int == AOUT_VAR_SPDIF )
{
if ( ( i_snd_rc = snd_pcm_open( &p_sys->p_snd_pcm, psz_iec_device,
SND_PCM_STREAM_PLAYBACK, 0 ) ) < 0 )
{
msg_Err( p_aout, "cannot open ALSA device `%s' (%s)",
psz_iec_device, snd_strerror( i_snd_rc ) );
dialog_Fatal( p_aout, _("Audio output failed"),
_("VLC could not open the ALSA device \"%s\" (%s)."),
psz_iec_device, snd_strerror( i_snd_rc ) );
free( p_sys );
free( psz_device );
return VLC_EGENERIC;
}
i_buffer_size = ALSA_SPDIF_BUFFER_SIZE;
i_snd_pcm_format = SND_PCM_FORMAT_S16;
i_channels = 2;
i_vlc_pcm_format = VLC_CODEC_SPDIFL;
p_aout->output.i_nb_samples = i_period_size = ALSA_SPDIF_PERIOD_SIZE;
p_aout->output.output.i_bytes_per_frame = AOUT_SPDIF_SIZE;
p_aout->output.output.i_frame_length = A52_FRAME_NB;
aout_VolumeNoneInit( p_aout );
}
else
{
int i;
msg_Dbg( p_aout, "opening ALSA device `%s'", psz_device );
/* Since it seems snd_pcm_close hasn't really released the device at
the time it returns, probe if the device is available in loop for 1s.
We cannot use blocking mode since the we would wait indefinitely when
switching from a dmx device to surround51. */
for( i = 10; i >= 0; i-- )
{
if ( ( i_snd_rc = snd_pcm_open( &p_sys->p_snd_pcm, psz_device,
SND_PCM_STREAM_PLAYBACK, SND_PCM_NONBLOCK ) ) == -EBUSY )
{
if( i ) msleep( 100000 /* 100ms */ );
else
{
msg_Err( p_aout, "audio device: %s is already in use",
psz_device );
dialog_Fatal( p_aout, _("Audio output failed"),
_("The audio device \"%s\" is already in use."),
psz_device );
}
continue;
}
break;
}
if( i_snd_rc < 0 )
{
msg_Err( p_aout, "cannot open ALSA device `%s' (%s)",
psz_device, snd_strerror( i_snd_rc ) );
dialog_Fatal( p_aout, _("Audio output failed"),
_("VLC could not open the ALSA device \"%s\" (%s)."),
psz_device, snd_strerror( i_snd_rc ) );
free( p_sys );
free( psz_device );
return VLC_EGENERIC;
}
/* We want blocking mode */
snd_pcm_nonblock( p_sys->p_snd_pcm, 0 );
i_buffer_size = ALSA_DEFAULT_BUFFER_SIZE;
i_channels = aout_FormatNbChannels( &p_aout->output.output );
p_aout->output.i_nb_samples = i_period_size = ALSA_DEFAULT_PERIOD_SIZE;
aout_VolumeSoftInit( p_aout );
}
/* Free psz_device so that all the remaining data is stack-allocated */
free( psz_device );
p_aout->output.pf_play = Play;
snd_pcm_hw_params_alloca(&p_hw);
snd_pcm_sw_params_alloca(&p_sw);
/* Due to some bugs in alsa with some drivers, we need to retry in s16l
if snd_pcm_hw_params fails in fl32 */
while ( b_retry )
{
b_retry = false;
/* Get Initial hardware parameters */
if ( ( i_snd_rc = snd_pcm_hw_params_any( p_sys->p_snd_pcm, p_hw ) ) < 0 )
{
msg_Err( p_aout, "unable to retrieve initial hardware parameters (%s)",
snd_strerror( i_snd_rc ) );
goto error;
}
/* Set format. */
if ( ( i_snd_rc = snd_pcm_hw_params_set_format( p_sys->p_snd_pcm, p_hw,
i_snd_pcm_format ) ) < 0 )
{
if( i_snd_pcm_format != SND_PCM_FORMAT_S16 )
{
i_snd_pcm_format = SND_PCM_FORMAT_S16;
i_snd_rc = snd_pcm_hw_params_set_format( p_sys->p_snd_pcm,
p_hw, i_snd_pcm_format );
}
if ( i_snd_rc < 0 )
{
msg_Err( p_aout, "unable to set stream sample size and "
"word order (%s)", snd_strerror( i_snd_rc ) );
goto error;
}
}
if( i_vlc_pcm_format != VLC_CODEC_SPDIFL )
switch( i_snd_pcm_format )
{
case SND_PCM_FORMAT_FLOAT:
i_vlc_pcm_format = VLC_CODEC_FL32;
break;
case SND_PCM_FORMAT_S16:
i_vlc_pcm_format = VLC_CODEC_S16N;
break;
}
p_aout->output.output.i_format = i_vlc_pcm_format;
if ( ( i_snd_rc = snd_pcm_hw_params_set_access( p_sys->p_snd_pcm, p_hw,
SND_PCM_ACCESS_RW_INTERLEAVED ) ) < 0 )
{
msg_Err( p_aout, "unable to set interleaved stream format (%s)",
snd_strerror( i_snd_rc ) );
goto error;
}
/* Set channels. */
if ( ( i_snd_rc = snd_pcm_hw_params_set_channels( p_sys->p_snd_pcm, p_hw,
i_channels ) ) < 0 )
{
msg_Err( p_aout, "unable to set number of output channels (%s)",
snd_strerror( i_snd_rc ) );
goto error;
}
/* Set rate. */
i_old_rate = p_aout->output.output.i_rate;
i_snd_rc = snd_pcm_hw_params_set_rate_near( p_sys->p_snd_pcm, p_hw,
&p_aout->output.output.i_rate,
NULL );
if( i_snd_rc < 0 || p_aout->output.output.i_rate != i_old_rate )
{
msg_Warn( p_aout, "The rate %d Hz is not supported by your " \
"hardware. Using %d Hz instead.\n", i_old_rate, \
p_aout->output.output.i_rate );
}
/* Set period size. */
if ( ( i_snd_rc = snd_pcm_hw_params_set_period_size_near( p_sys->p_snd_pcm,
p_hw, &i_period_size, NULL ) ) < 0 )
{
msg_Err( p_aout, "unable to set period size (%s)",
snd_strerror( i_snd_rc ) );
goto error;
}
p_aout->output.i_nb_samples = i_period_size;
/* Set buffer size. */
if ( ( i_snd_rc = snd_pcm_hw_params_set_buffer_size_near( p_sys->p_snd_pcm,
p_hw, &i_buffer_size ) ) < 0 )
{
msg_Err( p_aout, "unable to set buffer size (%s)",
snd_strerror( i_snd_rc ) );
goto error;
}
/* Commit hardware parameters. */
if ( ( i_snd_rc = snd_pcm_hw_params( p_sys->p_snd_pcm, p_hw ) ) < 0 )
{
if ( b_retry == false &&
i_snd_pcm_format == SND_PCM_FORMAT_FLOAT)
{
b_retry = true;
i_snd_pcm_format = SND_PCM_FORMAT_S16;
p_aout->output.output.i_format = VLC_CODEC_S16N;
msg_Warn( p_aout, "unable to commit hardware configuration "
"with fl32 samples. Retrying with s16l (%s)", snd_strerror( i_snd_rc ) );
}
else
{
msg_Err( p_aout, "unable to commit hardware configuration (%s)",
snd_strerror( i_snd_rc ) );
goto error;
}
}
}
if( ( i_snd_rc = snd_pcm_hw_params_get_period_time( p_hw,
&p_sys->i_period_time, NULL ) ) < 0 )
{
msg_Err( p_aout, "unable to get period time (%s)",
snd_strerror( i_snd_rc ) );
goto error;
}
/* Get Initial software parameters */
snd_pcm_sw_params_current( p_sys->p_snd_pcm, p_sw );
i_snd_rc = snd_pcm_sw_params_set_sleep_min( p_sys->p_snd_pcm, p_sw, 0 );
i_snd_rc = snd_pcm_sw_params_set_avail_min( p_sys->p_snd_pcm, p_sw,
p_aout->output.i_nb_samples );
/* start playing when one period has been written */
i_snd_rc = snd_pcm_sw_params_set_start_threshold( p_sys->p_snd_pcm, p_sw,
ALSA_DEFAULT_PERIOD_SIZE);
if( i_snd_rc < 0 )
{
msg_Err( p_aout, "unable to set start threshold (%s)",
snd_strerror( i_snd_rc ) );
goto error;
}
/* Commit software parameters. */
if ( snd_pcm_sw_params( p_sys->p_snd_pcm, p_sw ) < 0 )
{
msg_Err( p_aout, "unable to set software configuration" );
goto error;
}
#ifdef ALSA_DEBUG
snd_output_printf( p_sys->p_snd_stderr, "\nALSA hardware setup:\n\n" );
snd_pcm_dump_hw_setup( p_sys->p_snd_pcm, p_sys->p_snd_stderr );
snd_output_printf( p_sys->p_snd_stderr, "\nALSA software setup:\n\n" );
snd_pcm_dump_sw_setup( p_sys->p_snd_pcm, p_sys->p_snd_stderr );
snd_output_printf( p_sys->p_snd_stderr, "\n" );
#endif
/* Create ALSA thread and wait for its readiness. */
if( vlc_thread_create( p_aout, "aout", ALSAThread,
VLC_THREAD_PRIORITY_OUTPUT ) )
{
msg_Err( p_aout, "cannot create ALSA thread (%m)" );
goto error;
}
return 0;
error:
snd_pcm_close( p_sys->p_snd_pcm );
#ifdef ALSA_DEBUG
snd_output_close( p_sys->p_snd_stderr );
#endif
free( p_sys );
return VLC_EGENERIC;
}
/*****************************************************************************
* aout_OutputNew : allocate a new output and rework the filter pipeline
*****************************************************************************
* This function is entered with the mixer lock.
*****************************************************************************/
int aout_OutputNew( aout_instance_t * p_aout,
const audio_sample_format_t * p_format )
{
vlc_assert_locked( &p_aout->lock );
p_aout->output.output = *p_format;
/* Retrieve user defaults. */
int i_rate = var_InheritInteger( p_aout, "aout-rate" );
if ( i_rate != 0 )
p_aout->output.output.i_rate = i_rate;
aout_FormatPrepare( &p_aout->output.output );
/* Find the best output plug-in. */
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 audio output module" );
return -1;
}
if ( var_Type( p_aout, "audio-channels" ) ==
(VLC_VAR_INTEGER | VLC_VAR_HASCHOICE) )
{
/* The user may have selected a different channels configuration. */
switch( var_InheritInteger( p_aout, "audio-channels" ) )
{
case AOUT_VAR_CHAN_RSTEREO:
p_aout->output.output.i_original_channels |=
AOUT_CHAN_REVERSESTEREO;
break;
case AOUT_VAR_CHAN_STEREO:
p_aout->output.output.i_original_channels =
AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
break;
case AOUT_VAR_CHAN_LEFT:
p_aout->output.output.i_original_channels = AOUT_CHAN_LEFT;
break;
case AOUT_VAR_CHAN_RIGHT:
p_aout->output.output.i_original_channels = AOUT_CHAN_RIGHT;
break;
case AOUT_VAR_CHAN_DOLBYS:
p_aout->output.output.i_original_channels =
AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_DOLBYSTEREO;
break;
}
}
else if ( p_aout->output.output.i_physical_channels == AOUT_CHAN_CENTER
&& (p_aout->output.output.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_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->output.output.i_original_channels & AOUT_CHAN_DUALMONO )
{
/* Go directly to the left channel. */
p_aout->output.output.i_original_channels = AOUT_CHAN_LEFT;
var_SetInteger( p_aout, "audio-channels", AOUT_VAR_CHAN_LEFT );
}
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)) )
{
vlc_value_t val, text;
/* Stereo - create the audio-channels variable. */
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->output.output.i_original_channels & AOUT_CHAN_DOLBYSTEREO )
{
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->output.output.i_original_channels & AOUT_CHAN_DUALMONO )
{
/* Go directly to the left channel. */
p_aout->output.output.i_original_channels = AOUT_CHAN_LEFT;
var_SetInteger( p_aout, "audio-channels", AOUT_VAR_CHAN_LEFT );
}
var_AddCallback( p_aout, "audio-channels", aout_ChannelsRestart,
NULL );
}
var_TriggerCallback( p_aout, "intf-change" );
aout_FormatPrepare( &p_aout->output.output );
/* Prepare FIFO. */
aout_FifoInit( p_aout, &p_aout->output.fifo, p_aout->output.output.i_rate );
aout_FormatPrint( p_aout, "output", &p_aout->output.output );
/* Choose the mixer format. */
p_aout->mixer_format = p_aout->output.output;
if ( AOUT_FMT_NON_LINEAR(&p_aout->output.output) )
p_aout->mixer_format.i_format = p_format->i_format;
else
/* 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_FormatPrepare( &p_aout->mixer_format );
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_format,
&p_aout->output.output ) < 0 )
{
msg_Err( p_aout, "couldn't create audio output pipeline" );
module_unneed( p_aout, p_aout->output.p_module );
p_aout->output.p_module = NULL;
return -1;
}
return 0;
}
/*****************************************************************************
* Open: create a handle and open an alsa device
*****************************************************************************
* This function opens an alsa device, through the alsa API.
*
* Note: the only heap-allocated string is psz_device. All the other pointers
* are references to psz_device or to stack-allocated data.
*****************************************************************************/
static int Open (vlc_object_t *obj)
{
aout_instance_t * p_aout = (aout_instance_t *)obj;
/* Get device name */
char *psz_device;
if (var_Type (p_aout, "audio-device"))
psz_device = var_GetString (p_aout, "audio-device");
else
psz_device = var_InheritString( p_aout, "alsa-audio-device" );
if (unlikely(psz_device == NULL))
return VLC_ENOMEM;
snd_pcm_format_t pcm_format; /* ALSA sample format */
vlc_fourcc_t fourcc = p_aout->output.output.i_format;
bool spdif = false;
switch (fourcc)
{
case VLC_CODEC_F64B:
pcm_format = SND_PCM_FORMAT_FLOAT64_BE;
break;
case VLC_CODEC_F64L:
pcm_format = SND_PCM_FORMAT_FLOAT64_LE;
break;
case VLC_CODEC_F32B:
pcm_format = SND_PCM_FORMAT_FLOAT_BE;
break;
case VLC_CODEC_F32L:
pcm_format = SND_PCM_FORMAT_FLOAT_LE;
break;
case VLC_CODEC_FI32:
fourcc = VLC_CODEC_FL32;
pcm_format = SND_PCM_FORMAT_FLOAT;
break;
case VLC_CODEC_S32B:
pcm_format = SND_PCM_FORMAT_S32_BE;
break;
case VLC_CODEC_S32L:
pcm_format = SND_PCM_FORMAT_S32_LE;
break;
case VLC_CODEC_S24B:
pcm_format = SND_PCM_FORMAT_S24_3BE;
break;
case VLC_CODEC_S24L:
pcm_format = SND_PCM_FORMAT_S24_3LE;
break;
case VLC_CODEC_U24B:
pcm_format = SND_PCM_FORMAT_U24_3BE;
break;
case VLC_CODEC_U24L:
pcm_format = SND_PCM_FORMAT_U24_3LE;
break;
case VLC_CODEC_S16B:
pcm_format = SND_PCM_FORMAT_S16_BE;
break;
case VLC_CODEC_S16L:
pcm_format = SND_PCM_FORMAT_S16_LE;
break;
case VLC_CODEC_U16B:
pcm_format = SND_PCM_FORMAT_U16_BE;
break;
case VLC_CODEC_U16L:
pcm_format = SND_PCM_FORMAT_U16_LE;
break;
case VLC_CODEC_S8:
pcm_format = SND_PCM_FORMAT_S8;
break;
case VLC_CODEC_U8:
pcm_format = SND_PCM_FORMAT_U8;
break;
default:
if (AOUT_FMT_NON_LINEAR(&p_aout->output.output))
spdif = var_InheritBool (p_aout, "spdif");
if (HAVE_FPU)
{
fourcc = VLC_CODEC_FL32;
pcm_format = SND_PCM_FORMAT_FLOAT;
}
else
{
fourcc = VLC_CODEC_S16N;
pcm_format = SND_PCM_FORMAT_S16;
}
}
/* Choose the IEC device for S/PDIF output:
if the device is overridden by the user then it will be the one
otherwise we compute the default device based on the output format. */
if (spdif && !strcmp (psz_device, DEFAULT_ALSA_DEVICE))
{
unsigned aes3;
switch (p_aout->output.output.i_rate)
{
#define FS(freq) \
case freq: aes3 = IEC958_AES3_CON_FS_ ## freq; break;
FS( 44100) /* def. */ FS( 48000) FS( 32000)
FS( 22050) FS( 24000)
FS( 88200) FS(768000) FS( 96000)
FS(176400) FS(192000)
#undef FS
default:
aes3 = IEC958_AES3_CON_FS_NOTID;
break;
}
free (psz_device);
if (asprintf (&psz_device,
"iec958:AES0=0x%x,AES1=0x%x,AES2=0x%x,AES3=0x%x",
IEC958_AES0_CON_EMPHASIS_NONE | IEC958_AES0_NONAUDIO,
IEC958_AES1_CON_ORIGINAL | IEC958_AES1_CON_PCM_CODER,
0, aes3) == -1)
return VLC_ENOMEM;
}
/*****************************************************************************
* aout_InputNew : allocate a new input and rework the filter pipeline
*****************************************************************************/
int aout_InputNew( aout_instance_t * p_aout, aout_input_t * p_input )
{
audio_sample_format_t chain_input_format;
audio_sample_format_t chain_output_format;
vlc_value_t val, text;
char * psz_filters, *psz_visual;
int i_visual;
aout_FormatPrint( p_aout, "input", &p_input->input );
p_input->i_nb_filters = 0;
/* Prepare FIFO. */
aout_FifoInit( p_aout, &p_input->fifo, p_aout->mixer.mixer.i_rate );
p_input->p_first_byte_to_mix = NULL;
/* Prepare format structure */
memcpy( &chain_input_format, &p_input->input,
sizeof(audio_sample_format_t) );
memcpy( &chain_output_format, &p_aout->mixer.mixer,
sizeof(audio_sample_format_t) );
chain_output_format.i_rate = p_input->input.i_rate;
aout_FormatPrepare( &chain_output_format );
/* Now add user filters */
if( var_Type( p_aout, "visual" ) == 0 )
{
module_t *p_module;
var_Create( p_aout, "visual", VLC_VAR_STRING | VLC_VAR_HASCHOICE );
text.psz_string = _("Visualizations");
var_Change( p_aout, "visual", VLC_VAR_SETTEXT, &text, NULL );
val.psz_string = ""; text.psz_string = _("Disable");
var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
val.psz_string = "spectrometer"; text.psz_string = _("Spectrometer");
var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
val.psz_string = "scope"; text.psz_string = _("Scope");
var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
val.psz_string = "spectrum"; text.psz_string = _("Spectrum");
var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
/* Look for goom plugin */
p_module = config_FindModule( VLC_OBJECT(p_aout), "goom" );
if( p_module )
{
val.psz_string = "goom"; text.psz_string = "Goom";
var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
}
/* Look for galaktos plugin */
p_module = config_FindModule( VLC_OBJECT(p_aout), "galaktos" );
if( p_module )
{
val.psz_string = "galaktos"; text.psz_string = "GaLaktos";
var_Change( p_aout, "visual", VLC_VAR_ADDCHOICE, &val, &text );
}
if( var_Get( p_aout, "effect-list", &val ) == VLC_SUCCESS )
{
var_Set( p_aout, "visual", val );
if( val.psz_string ) free( val.psz_string );
}
var_AddCallback( p_aout, "visual", VisualizationCallback, NULL );
}
if( var_Type( p_aout, "equalizer" ) == 0 )
{
module_config_t *p_config;
int i;
p_config = config_FindConfig( VLC_OBJECT(p_aout), "equalizer-preset" );
if( p_config && p_config->i_list )
{
var_Create( p_aout, "equalizer",
VLC_VAR_STRING | VLC_VAR_HASCHOICE );
text.psz_string = _("Equalizer");
var_Change( p_aout, "equalizer", VLC_VAR_SETTEXT, &text, NULL );
val.psz_string = ""; text.psz_string = _("Disable");
var_Change( p_aout, "equalizer", VLC_VAR_ADDCHOICE, &val, &text );
for( i = 0; i < p_config->i_list; i++ )
{
val.psz_string = p_config->ppsz_list[i];
text.psz_string = p_config->ppsz_list_text[i];
var_Change( p_aout, "equalizer", VLC_VAR_ADDCHOICE,
&val, &text );
}
var_AddCallback( p_aout, "equalizer", EqualizerCallback, NULL );
}
}
if( var_Type( p_aout, "audio-filter" ) == 0 )
{
var_Create( p_aout, "audio-filter",
VLC_VAR_STRING | VLC_VAR_DOINHERIT );
text.psz_string = _("Audio filters");
var_Change( p_aout, "audio-filter", VLC_VAR_SETTEXT, &text, NULL );
}
if( var_Type( p_aout, "audio-visual" ) == 0 )
{
var_Create( p_aout, "audio-visual",
VLC_VAR_STRING | VLC_VAR_DOINHERIT );
text.psz_string = _("Audio visualizations");
var_Change( p_aout, "audio-visual", VLC_VAR_SETTEXT, &text, NULL );
}
var_Get( p_aout, "audio-filter", &val );
psz_filters = val.psz_string;
var_Get( p_aout, "audio-visual", &val );
psz_visual = val.psz_string;
/* parse user filter lists */
for( i_visual = 0; i_visual < 2; i_visual++ )
{
char *psz_next = NULL;
char *psz_parser = i_visual ? psz_visual : psz_filters;
if( psz_parser == NULL || !*psz_parser )
continue;
while( psz_parser && *psz_parser )
{
aout_filter_t * p_filter = NULL;
if( p_input->i_nb_filters >= AOUT_MAX_FILTERS )
{
msg_Dbg( p_aout, "max filters reached (%d)", AOUT_MAX_FILTERS );
break;
}
while( *psz_parser == ' ' && *psz_parser == ':' )
{
psz_parser++;
}
if( ( psz_next = strchr( psz_parser , ':' ) ) )
{
*psz_next++ = '\0';
}
if( *psz_parser =='\0' )
{
break;
}
/* Create a VLC object */
p_filter = vlc_object_create( p_aout, sizeof(aout_filter_t) );
if( p_filter == NULL )
{
msg_Err( p_aout, "cannot add user filter %s (skipped)",
psz_parser );
psz_parser = psz_next;
continue;
}
vlc_object_attach( p_filter , p_aout );
/* try to find the requested filter */
if( i_visual == 1 ) /* this can only be a visualization module */
{
/* request format */
memcpy( &p_filter->input, &chain_output_format,
sizeof(audio_sample_format_t) );
memcpy( &p_filter->output, &chain_output_format,
sizeof(audio_sample_format_t) );
p_filter->p_module = module_Need( p_filter, "visualization",
psz_parser, VLC_TRUE );
}
else /* this can be a audio filter module as well as a visualization module */
{
/* request format */
memcpy( &p_filter->input, &chain_input_format,
sizeof(audio_sample_format_t) );
memcpy( &p_filter->output, &chain_output_format,
sizeof(audio_sample_format_t) );
p_filter->p_module = module_Need( p_filter, "audio filter",
psz_parser, VLC_TRUE );
if ( p_filter->p_module == NULL )
{
/* if the filter requested a special format, retry */
if ( !( AOUT_FMTS_IDENTICAL( &p_filter->input,
&chain_input_format )
&& AOUT_FMTS_IDENTICAL( &p_filter->output,
&chain_output_format ) ) )
{
aout_FormatPrepare( &p_filter->input );
aout_FormatPrepare( &p_filter->output );
p_filter->p_module = module_Need( p_filter,
"audio filter",
psz_parser, VLC_TRUE );
}
/* try visual filters */
else
{
memcpy( &p_filter->input, &chain_output_format,
sizeof(audio_sample_format_t) );
memcpy( &p_filter->output, &chain_output_format,
sizeof(audio_sample_format_t) );
p_filter->p_module = module_Need( p_filter,
"visualization",
psz_parser, VLC_TRUE );
}
}
}
/* failure */
if ( p_filter->p_module == NULL )
{
msg_Err( p_aout, "cannot add user filter %s (skipped)",
psz_parser );
vlc_object_detach( p_filter );
vlc_object_destroy( p_filter );
psz_parser = psz_next;
continue;
}
/* complete the filter chain if necessary */
if ( !AOUT_FMTS_IDENTICAL( &chain_input_format, &p_filter->input ) )
{
if ( aout_FiltersCreatePipeline( p_aout, p_input->pp_filters,
&p_input->i_nb_filters,
&chain_input_format,
&p_filter->input ) < 0 )
{
msg_Err( p_aout, "cannot add user filter %s (skipped)",
psz_parser );
module_Unneed( p_filter, p_filter->p_module );
vlc_object_detach( p_filter );
vlc_object_destroy( p_filter );
psz_parser = psz_next;
continue;
}
}
/* success */
p_filter->b_continuity = VLC_FALSE;
p_input->pp_filters[p_input->i_nb_filters++] = p_filter;
memcpy( &chain_input_format, &p_filter->output,
sizeof( audio_sample_format_t ) );
/* next filter if any */
psz_parser = psz_next;
}
}
if( psz_filters ) free( psz_filters );
if( psz_visual ) free( psz_visual );
/* complete the filter chain if necessary */
if ( !AOUT_FMTS_IDENTICAL( &chain_input_format, &chain_output_format ) )
{
if ( aout_FiltersCreatePipeline( p_aout, p_input->pp_filters,
&p_input->i_nb_filters,
&chain_input_format,
&chain_output_format ) < 0 )
{
inputFailure( p_aout, p_input, "couldn't set an input pipeline" );
return -1;
}
}
/* Prepare hints for the buffer allocator. */
p_input->input_alloc.i_alloc_type = AOUT_ALLOC_HEAP;
p_input->input_alloc.i_bytes_per_sec = -1;
/* Create resamplers. */
if ( AOUT_FMT_NON_LINEAR( &p_aout->mixer.mixer ) )
{
p_input->i_nb_resamplers = 0;
}
else
{
chain_output_format.i_rate = (__MAX(p_input->input.i_rate,
p_aout->mixer.mixer.i_rate)
* (100 + AOUT_MAX_RESAMPLING)) / 100;
if ( chain_output_format.i_rate == p_aout->mixer.mixer.i_rate )
{
/* Just in case... */
chain_output_format.i_rate++;
}
p_input->i_nb_resamplers = 0;
if ( aout_FiltersCreatePipeline( p_aout, p_input->pp_resamplers,
&p_input->i_nb_resamplers,
&chain_output_format,
&p_aout->mixer.mixer ) < 0 )
{
inputFailure( p_aout, p_input, "couldn't set a resampler pipeline");
return -1;
}
aout_FiltersHintBuffers( p_aout, p_input->pp_resamplers,
p_input->i_nb_resamplers,
&p_input->input_alloc );
p_input->input_alloc.i_alloc_type = AOUT_ALLOC_HEAP;
/* Setup the initial rate of the resampler */
p_input->pp_resamplers[0]->input.i_rate = p_input->input.i_rate;
}
p_input->i_resampling_type = AOUT_RESAMPLING_NONE;
aout_FiltersHintBuffers( p_aout, p_input->pp_filters,
p_input->i_nb_filters,
&p_input->input_alloc );
p_input->input_alloc.i_alloc_type = AOUT_ALLOC_HEAP;
/* i_bytes_per_sec is still == -1 if no filters */
p_input->input_alloc.i_bytes_per_sec = __MAX(
p_input->input_alloc.i_bytes_per_sec,
(int)(p_input->input.i_bytes_per_frame
* p_input->input.i_rate
/ p_input->input.i_frame_length) );
/* Success */
p_input->b_error = VLC_FALSE;
p_input->b_restart = VLC_FALSE;
return 0;
}
