static int transcode_audio_initialize_filters( sout_stream_t *p_stream, sout_stream_id_t *id, sout_stream_sys_t *p_sys, audio_sample_format_t *fmt_last )
{
/* Load user specified audio filters */
/* XXX: These variable names come kinda out of nowhere... */
var_Create( p_stream, "audio-time-stretch", VLC_VAR_BOOL );
var_Create( p_stream, "audio-filter", VLC_VAR_STRING );
if( p_sys->psz_af )
var_SetString( p_stream, "audio-filter", p_sys->psz_af );
id->p_af_chain = aout_FiltersNew( p_stream, fmt_last,
&id->p_encoder->fmt_in.audio, NULL );
var_Destroy( p_stream, "audio-filter" );
var_Destroy( p_stream, "audio-time-stretch" );
if( id->p_af_chain == NULL )
{
msg_Err( p_stream, "Unable to initialize audio filters" );
module_unneed( id->p_encoder, id->p_encoder->p_module );
id->p_encoder->p_module = NULL;
module_unneed( id->p_decoder, id->p_decoder->p_module );
id->p_decoder->p_module = NULL;
return VLC_EGENERIC;
}
p_sys->fmt_audio.i_rate = fmt_last->i_rate;
p_sys->fmt_audio.i_physical_channels = fmt_last->i_physical_channels;
return VLC_SUCCESS;
}
static int aout_CheckReady (audio_output_t *aout)
{
aout_owner_t *owner = aout_owner (aout);
int status = AOUT_DEC_SUCCESS;
int restart = atomic_exchange (&owner->restart, 0);
if (unlikely(restart))
{
if (owner->mixer_format.i_format)
aout_FiltersDelete (aout, owner->filters);
if (restart & AOUT_RESTART_OUTPUT)
{ /* Reinitializes the output */
msg_Dbg (aout, "restarting output...");
if (owner->mixer_format.i_format)
aout_OutputDelete (aout);
owner->mixer_format = owner->input_format;
if (aout_OutputNew (aout, &owner->mixer_format))
owner->mixer_format.i_format = 0;
aout_volume_SetFormat (owner->volume,
owner->mixer_format.i_format);
status = AOUT_DEC_CHANGED;
}
msg_Dbg (aout, "restarting filters...");
owner->sync.end = VLC_TS_INVALID;
owner->sync.resamp_type = AOUT_RESAMPLING_NONE;
if (owner->mixer_format.i_format)
{
owner->filters = aout_FiltersNew (aout, &owner->input_format,
&owner->mixer_format,
&owner->request_vout);
if (owner->filters == NULL)
{
aout_OutputDelete (aout);
owner->mixer_format.i_format = 0;
}
}
/* TODO: This would be a good time to call clean up any video output
* left over by an audio visualization:
input_resource_TerminatVout(MAGIC HERE); */
}
return (owner->mixer_format.i_format) ? status : AOUT_DEC_FAILED;
}
static int aout_CheckReady (audio_output_t *aout)
{
aout_owner_t *owner = aout_owner (aout);
aout_assert_locked (aout);
int restart = atomic_exchange (&owner->restart, 0);
if (unlikely(restart))
{
const aout_request_vout_t request_vout = owner->request_vout;
if (owner->mixer_format.i_format)
aout_FiltersDelete (aout);
if (restart & AOUT_RESTART_OUTPUT)
{ /* Reinitializes the output */
msg_Dbg (aout, "restarting output...");
if (owner->mixer_format.i_format)
aout_OutputDelete (aout);
owner->mixer_format = owner->input_format;
if (aout_OutputNew (aout, &owner->mixer_format))
owner->mixer_format.i_format = 0;
aout_volume_SetFormat (owner->volume,
owner->mixer_format.i_format);
}
msg_Dbg (aout, "restarting filters...");
owner->sync.end = VLC_TS_INVALID;
owner->sync.resamp_type = AOUT_RESAMPLING_NONE;
if (owner->mixer_format.i_format
&& aout_FiltersNew (aout, &owner->input_format, &owner->mixer_format,
&request_vout))
{
aout_OutputDelete (aout);
owner->mixer_format.i_format = 0;
}
}
return (owner->mixer_format.i_format) ? 0 : -1;
}
/**
* Creates an audio output
*/
int aout_DecNew( audio_output_t *p_aout,
const audio_sample_format_t *p_format,
const audio_replay_gain_t *p_replay_gain,
const aout_request_vout_t *p_request_vout )
{
/* Sanitize audio format */
unsigned i_channels = aout_FormatNbChannels( p_format );
if( i_channels != p_format->i_channels && AOUT_FMT_LINEAR( p_format ) )
{
msg_Err( p_aout, "incompatible audio channels count with layout mask" );
return -1;
}
if( p_format->i_rate > 352800 )
{
msg_Err( p_aout, "excessive audio sample frequency (%u)",
p_format->i_rate );
return -1;
}
if( p_format->i_rate < 4000 )
{
msg_Err( p_aout, "too low audio sample frequency (%u)",
p_format->i_rate );
return -1;
}
var_Create (p_aout, "stereo-mode", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
vlc_value_t txt;
txt.psz_string = _("Stereo audio mode");
var_Change (p_aout, "stereo-mode", VLC_VAR_SETTEXT, &txt, NULL);
aout_owner_t *owner = aout_owner(p_aout);
/* TODO: reduce lock scope depending on decoder's real need */
aout_OutputLock (p_aout);
/* Create the audio output stream */
owner->volume = aout_volume_New (p_aout, p_replay_gain);
atomic_store (&owner->restart, 0);
owner->input_format = *p_format;
owner->mixer_format = owner->input_format;
owner->request_vout = *p_request_vout;
if (aout_OutputNew (p_aout, &owner->mixer_format))
goto error;
aout_volume_SetFormat (owner->volume, owner->mixer_format.i_format);
/* Create the audio filtering "input" pipeline */
owner->filters = aout_FiltersNew (p_aout, p_format, &owner->mixer_format,
&owner->request_vout);
if (owner->filters == NULL)
{
aout_OutputDelete (p_aout);
error:
aout_volume_Delete (owner->volume);
owner->volume = NULL;
aout_OutputUnlock (p_aout);
var_Destroy (p_aout, "stereo-mode");
return -1;
}
owner->sync.end = VLC_TS_INVALID;
owner->sync.resamp_type = AOUT_RESAMPLING_NONE;
owner->sync.discontinuity = true;
aout_OutputUnlock (p_aout);
atomic_init (&owner->buffers_lost, 0);
atomic_init (&owner->buffers_played, 0);
return 0;
}
/**
* Creates an audio output
*/
int aout_DecNew( audio_output_t *p_aout,
const audio_sample_format_t *p_format,
const audio_replay_gain_t *p_replay_gain,
const aout_request_vout_t *p_request_vout )
{
/* Sanitize audio format */
if( p_format->i_channels != aout_FormatNbChannels( p_format ) )
{
msg_Err( p_aout, "incompatible audio channels count with layout mask" );
return -1;
}
if( p_format->i_rate > 352800 )
{
msg_Err( p_aout, "excessive audio sample frequency (%u)",
p_format->i_rate );
return -1;
}
if( p_format->i_rate < 4000 )
{
msg_Err( p_aout, "too low audio sample frequency (%u)",
p_format->i_rate );
return -1;
}
aout_owner_t *owner = aout_owner(p_aout);
/* TODO: reduce lock scope depending on decoder's real need */
aout_OutputLock (p_aout);
var_Destroy( p_aout, "stereo-mode" );
/* Create the audio output stream */
owner->volume = aout_volume_New (p_aout, p_replay_gain);
atomic_store (&owner->restart, (atomic_uchar)0); // sunqueen modify
owner->input_format = *p_format;
owner->mixer_format = owner->input_format;
owner->request_vout = *p_request_vout;
if (aout_OutputNew (p_aout, &owner->mixer_format))
goto error;
aout_volume_SetFormat (owner->volume, owner->mixer_format.i_format);
/* Create the audio filtering "input" pipeline */
owner->filters = aout_FiltersNew (p_aout, p_format, &owner->mixer_format,
&owner->request_vout);
if (owner->filters == NULL)
{
aout_OutputDelete (p_aout);
error:
aout_volume_Delete (owner->volume);
aout_OutputUnlock (p_aout);
return -1;
}
owner->sync.end = VLC_TS_INVALID;
owner->sync.resamp_type = AOUT_RESAMPLING_NONE;
owner->sync.discontinuity = true;
aout_OutputUnlock (p_aout);
atomic_init (&owner->buffers_lost, 0);
return 0;
}
