253 lines
5.9 KiB
C
253 lines
5.9 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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/* Controls the audio transport */
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#include "Transport.H"
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#include "Timeline.H"
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#include "Engine/Engine.H"
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Transport::Transport ( int X, int Y, int W, int H, const char *L )
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: Fl_Pack( X, Y, W, H, L )
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{
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recording = false;
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rolling = false;
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_stop_disables_record = true;
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bar = 0;
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beat = 0;
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tick = 0;
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beats_per_minute = 120;
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ticks_per_beat = 1920;
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beat_type = 4;
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beats_per_bar = 4;
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next_time = 0;
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frame_time =0;
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frame_rate = 48000;
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frame = 0;
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const int bw = W / 5;
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type( HORIZONTAL );
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Fl_Button *o;
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_home_button = o = new Fl_Button( 0, 0, bw, 0, "@|<" );
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o->labeltype( FL_EMBOSSED_LABEL );
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o->callback( cb_button, this );
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o->shortcut( FL_Home );
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o->box( FL_UP_BOX );
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_end_button = o = new Fl_Button( 0, 0, bw, 0, "@>|" );
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o->labeltype( FL_EMBOSSED_LABEL );
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o->callback( cb_button, this );
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o->shortcut( FL_End );
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_play_button = o = new Fl_Button( 0, 0, bw, 0, "@>" );
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o->labeltype( FL_EMBOSSED_LABEL );
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o->callback( cb_button, this );
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o->shortcut( ' ' );
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o->box( FL_UP_BOX );
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_record_button = o = new Fl_Button( 0, 0, bw, 0, "@circle" );
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o->type( FL_TOGGLE_BUTTON );
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o->labeltype( FL_EMBOSSED_LABEL );
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o->labelcolor( fl_color_average( FL_RED, FL_WHITE, 0.25f ) );
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o->shortcut( 'R' );
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o->callback( cb_button, this );
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o->when( FL_WHEN_CHANGED );
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o->box( FL_UP_BOX );
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_punch_button = o = new Fl_Button( 0, 0, bw, 0, "Punch" );
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o->type( FL_TOGGLE_BUTTON );
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o->labelsize( 9 );
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o->labeltype( FL_NORMAL_LABEL );
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o->shortcut( 'P' );
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o->callback( cb_button, this );
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o->when( FL_WHEN_CHANGED );
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o->color2( FL_RED );
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o->box( FL_UP_BOX );
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end();
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}
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void
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Transport::cb_button ( Fl_Widget *w, void *v )
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{
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((Transport*)v)->cb_button( w );
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}
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void
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Transport::update_record_state ( void )
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{
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Fl_Button *w = _record_button;
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/* handle display */
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if ( w->value() )
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w->labelcolor( FL_RED );
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else
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w->labelcolor( fl_color_average( FL_RED, FL_WHITE, 0.25f ) );
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w->redraw();
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/* this covers the case where the record toggle button is
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* pressed while the transport is already rolling. Recording
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* should begin or end on the next frame */
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if ( rolling )
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{
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if ( ! recording && w->value() )
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{
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timeline->record();
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recording = true;
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}
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else if ( recording )
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{
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timeline->stop();
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recording = false;
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}
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}
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}
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/** cb_button
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* common handler for all transport buttons */
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void
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Transport::cb_button ( Fl_Widget *w )
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{
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if ( w == _home_button )
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locate( timeline->playback_home() );
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else if ( w == _end_button )
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locate( timeline->playback_end() );
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else if ( w == _play_button )
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toggle();
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else if ( w == _record_button )
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update_record_state();
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else if ( w == _punch_button )
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timeline->redraw();
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}
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void
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Transport::toggle_record ( void )
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{
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_record_button->value( ! _record_button->value() );
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update_record_state();
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}
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bool
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Transport::rec_enabled ( void ) const
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{
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return _record_button->value();
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}
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bool
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Transport::punch_enabled ( void ) const
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{
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return _punch_button->value();
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}
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int
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Transport::handle ( int m )
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{
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/* FIXME: hack to avoid stealing focus */
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if ( m == FL_FOCUS )
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return 0;
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else
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return Fl_Pack::handle( m );
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}
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/***********/
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/* Control */
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/***********/
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void
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Transport::poll ( void )
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{
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jack_transport_state_t ts;
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ts = engine->transport_query( this );
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rolling = ts == JackTransportRolling;
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}
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void
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Transport::locate ( nframes_t frame )
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{
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if ( ! engine )
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return;
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if ( ! recording )
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{
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// don't allow seeking while record is in progress
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engine->transport_locate( frame );
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/* so there isn't a race waiting for the transport to sync */
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this->frame = frame;
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}
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timeline->_created_new_takes = false;
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}
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void
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Transport::start ( void )
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{
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// MESSAGE( "Starting transport" );
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if ( _record_button->value() )
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{
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rolling = true;
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update_record_state();
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}
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if ( engine )
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engine->transport_start();
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}
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void
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Transport::stop ( void )
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{
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// MESSAGE( "Stopping transport" );
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if ( _record_button->value() )
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{
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if ( _stop_disables_record )
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_record_button->value( 0 );
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timeline->_created_new_takes = false;
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update_record_state();
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}
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if ( engine )
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engine->transport_stop();
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}
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void
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Transport::toggle ( void )
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{
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if ( rolling )
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stop();
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else
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start();
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}
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