/**
* Stops all plugins involved in the audio output.
*/
void aout_DecDelete (audio_output_t *aout)
{
aout_owner_t *owner = aout_owner (aout);
aout_OutputLock (aout);
if (owner->mixer_format.i_format)
{
aout_FiltersDelete (aout, owner->filters);
aout_OutputDelete (aout);
}
aout_volume_Delete (owner->volume);
aout_OutputUnlock (aout);
var_Destroy (aout, "stereo-mode");
}
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;
}
void transcode_audio_close( sout_stream_id_t *id )
{
/* Close decoder */
if( id->p_decoder->p_module )
module_unneed( id->p_decoder, id->p_decoder->p_module );
id->p_decoder->p_module = NULL;
if( id->p_decoder->p_description )
vlc_meta_Delete( id->p_decoder->p_description );
id->p_decoder->p_description = NULL;
/* Close encoder */
if( id->p_encoder->p_module )
module_unneed( id->p_encoder, id->p_encoder->p_module );
id->p_encoder->p_module = NULL;
/* Close filters */
if( id->p_af_chain != NULL )
aout_FiltersDelete( (vlc_object_t *)NULL, id->p_af_chain );
}
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;
}
int transcode_audio_process( sout_stream_t *p_stream,
sout_stream_id_t *id,
block_t *in, block_t **out )
{
sout_stream_sys_t *p_sys = p_stream->p_sys;
block_t *p_block, *p_audio_buf;
*out = NULL;
if( unlikely( in == NULL ) )
{
block_t *p_block;
do {
p_block = id->p_encoder->pf_encode_audio(id->p_encoder, NULL );
block_ChainAppend( out, p_block );
} while( p_block );
return VLC_SUCCESS;
}
while( (p_audio_buf = id->p_decoder->pf_decode_audio( id->p_decoder,
&in )) )
{
if( p_sys->b_master_sync )
{
mtime_t i_pts = date_Get( &id->interpolated_pts ) + 1;
mtime_t i_drift = 0;
if( likely( p_audio_buf->i_pts != VLC_TS_INVALID ) )
i_drift = p_audio_buf->i_pts - i_pts;
if ( unlikely(i_drift > MASTER_SYNC_MAX_DRIFT
|| i_drift < -MASTER_SYNC_MAX_DRIFT) )
{
msg_Dbg( p_stream,
"audio drift is too high (%"PRId64"), resetting master sync",
i_drift );
date_Set( &id->interpolated_pts, p_audio_buf->i_pts );
i_pts = p_audio_buf->i_pts + 1;
}
if( likely(p_audio_buf->i_pts != VLC_TS_INVALID ) )
p_sys->i_master_drift = p_audio_buf->i_pts - i_pts;
date_Increment( &id->interpolated_pts, p_audio_buf->i_nb_samples );
p_audio_buf->i_pts = i_pts;
}
p_audio_buf->i_dts = p_audio_buf->i_pts;
/* Check if audio format has changed, and filters need reinit */
if( unlikely( ( id->p_decoder->fmt_out.audio.i_rate != p_sys->fmt_audio.i_rate ) ||
( id->p_decoder->fmt_out.audio.i_physical_channels != p_sys->fmt_audio.i_physical_channels ) ) )
{
msg_Info( p_stream, "Audio changed, trying to reinitialize filters" );
if( id->p_af_chain != NULL )
aout_FiltersDelete( (vlc_object_t *)NULL, id->p_af_chain );
/* decoders don't set audio.i_format, but audio filters use it */
id->p_decoder->fmt_out.audio.i_format = id->p_decoder->fmt_out.i_codec;
aout_FormatPrepare( &id->p_decoder->fmt_out.audio );
if( transcode_audio_initialize_filters( p_stream, id, p_sys, &id->p_decoder->fmt_out.audio ) != VLC_SUCCESS )
return VLC_EGENERIC;
}
/* Run filter chain */
p_audio_buf = aout_FiltersPlay( id->p_af_chain, p_audio_buf,
INPUT_RATE_DEFAULT );
if( !p_audio_buf )
abort();
p_audio_buf->i_dts = p_audio_buf->i_pts;
p_block = id->p_encoder->pf_encode_audio( id->p_encoder, p_audio_buf );
block_ChainAppend( out, p_block );
block_Release( p_audio_buf );
}
return VLC_SUCCESS;
}