303 lines
7.2 KiB
C
303 lines
7.2 KiB
C
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/*******************************************************************************/
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/* Copyright (C) 2008 Jonathan Moore Liles */
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/* */
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/* This program is free software; you can redistribute it and/or modify it */
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/* under the terms of the GNU General Public License as published by the */
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/* Free Software Foundation; either version 2 of the License, or (at your */
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/* option) any later version. */
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/* */
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/* This program is distributed in the hope that it will be useful, but WITHOUT */
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/* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or */
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/* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for */
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/* more details. */
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/* */
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/* You should have received a copy of the GNU General Public License along */
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/* with This program; see the file COPYING. If not,write to the Free Software */
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/* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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/*******************************************************************************/
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#include "../Track.H"
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#include "../Transport.H" // for rolling
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#include "../Control_Sequence.H"
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#include "Playback_DS.H"
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#include "Record_DS.H"
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#include "Engine.H"
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/**********/
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/* Engine */
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/**********/
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const Audio_Region *
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Track::capture_region ( void ) const
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{
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if ( record_ds )
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return record_ds->capture_region();
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else
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return NULL;
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}
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void
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Track::update_port_names ( void )
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{
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for ( unsigned int i = 0; i < output.size(); ++i )
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output[ i ].name( name(), i );
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for ( unsigned int i = 0; i < input.size(); ++i )
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input[ i ].name( name(), i );
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/* /\* tell any attached control sequences to do the same *\/ */
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/* for ( int i = control->children(); i-- ) */
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/* ((Control_Sequence*)control->child( i ))->update_port_names(); */
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}
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bool
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Track::configure_outputs ( int n )
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{
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int on = output.size();
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if ( n == on )
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return true;
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// engine->lock();
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if ( playback_ds )
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{
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Playback_DS *ds = playback_ds;
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playback_ds = NULL;
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delete ds;
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}
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if ( n > on )
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{
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for ( int i = on; i < n; ++i )
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{
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JACK::Port p( engine->client(), JACK::Port::Output, name(), i );
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if ( p.valid() )
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output.push_back( p );
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else
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WARNING( "could not create output port!" );
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}
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}
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else
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{
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for ( int i = on; i > n; --i )
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{
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output.back().shutdown();
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output.pop_back();
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}
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}
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if ( output.size() )
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playback_ds = new Playback_DS( this, engine->frame_rate(), engine->nframes(), output.size() );
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// engine->unlock();
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/* FIXME: bogus */
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return true;
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}
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bool
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Track::configure_inputs ( int n )
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{
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int on = input.size();
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if ( n == on )
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return true;
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// engine->lock();
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if ( record_ds )
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{
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Record_DS *ds = record_ds;
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record_ds = NULL;
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delete ds;
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}
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if ( n > on )
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{
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for ( int i = on; i < n; ++i )
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{
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JACK::Port p( engine->client(), JACK::Port::Input, name(), i );
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if ( p.valid() )
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input.push_back( p );
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else
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WARNING( "could not create input port!" );
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}
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}
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else
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{
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for ( int i = on; i > n; --i )
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{
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input.back().shutdown();
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input.pop_back();
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}
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}
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if ( input.size() )
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record_ds = new Record_DS( this, engine->frame_rate(), engine->nframes(), input.size() );
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// engine->unlock();
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/* FIXME: bogus */
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return true;
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}
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nframes_t
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Track::process_input ( nframes_t nframes )
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{
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THREAD_ASSERT( RT );
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if ( ! transport->rolling )
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{
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/* There is no work to do when we're not rolling. */
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return 0;
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}
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if ( record_ds )
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return record_ds->process( nframes );
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else
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return 0;
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}
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nframes_t
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Track::process_output ( nframes_t nframes )
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{
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THREAD_ASSERT( RT );
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if ( ! transport->rolling )
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{
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for ( int i = output.size(); i--; )
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output[ i ].silence( nframes );
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return 0;
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}
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/* FIXME: should we blank the control output here or leave it floating? */
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for ( int i = control->children(); i--; )
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((Control_Sequence*)control->child( i ))->process( nframes );
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if ( playback_ds )
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return playback_ds->process( nframes );
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else
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return 0;
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}
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void
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Track::seek ( nframes_t frame )
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{
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THREAD_ASSERT( RT );
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if ( playback_ds )
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return playback_ds->seek( frame );
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}
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void
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Track::delay ( nframes_t frames )
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{
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// THREAD_ASSERT( RT );
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if ( playback_ds )
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playback_ds->delay( frames );
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}
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/* THREAD: RT (non-RT) */
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void
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Track::resize_buffers ( nframes_t nframes )
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{
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if ( record_ds )
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record_ds->resize_buffers( nframes );
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if ( playback_ds )
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playback_ds->resize_buffers( nframes );
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}
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#include <time.h>
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/** very cheap UUID generator... */
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unsigned long long
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uuid ( void )
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{
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time_t t = time( NULL );
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return (unsigned long long) t;
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}
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/** create capture region and prepare to record */
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void
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Track::record ( Capture *c, nframes_t frame )
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{
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THREAD_ASSERT( Capture );
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char pat[256];
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snprintf( pat, sizeof( pat ), "%s-%llu", name(), uuid() );
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c->audio_file = Audio_File_SF::create( pat, engine->sample_rate(), input.size(), Track::capture_format );
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if ( ! c->audio_file )
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FATAL( "Could not create file for new capture!" );
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/* open it again for reading in the GUI thread */
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Audio_File *af = Audio_File::from_file( c->audio_file->name() );
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c->region = new Audio_Region( af, sequence(), frame );
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c->region->prepare();
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}
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/** write a block to the (already opened) capture file */
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void
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Track::write ( Capture *c, sample_t *buf, nframes_t nframes )
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{
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THREAD_ASSERT( Capture );
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nframes_t l = c->audio_file->write( buf, nframes );
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c->region->write( l );
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}
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#include <stdio.h>
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void
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Track::finalize ( Capture *c, nframes_t frame )
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{
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THREAD_ASSERT( Capture );
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/* adjust region start for latency */
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/* FIXME: is just looking at the first channel good enough? */
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c->region->finalize( frame );
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DMESSAGE( "finalizing audio file" );
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c->audio_file->finalize();
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nframes_t capture_offset = 0;
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/* Add the system latency twice. Once for the input (usually
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* required) and again for the output latency of whatever we're
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* playing along to (should only apply when overdubbing) */
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/* Limitations in the JACK latency reporting API prevent us from
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* compensating from any software latency introduced by other
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* clients in our graph... Oh well */
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capture_offset += engine->system_latency();
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capture_offset += engine->system_latency();
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DMESSAGE( "Adjusting capture by %lu frames.", (unsigned long)capture_offset );
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c->region->offset( capture_offset );
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delete c->audio_file;
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}
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