148 lines
3.7 KiB
C++
148 lines
3.7 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 "Engine.H"
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#include "../Mixer.H" // for process()
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/* This is the home of the JACK process callback */
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// #include "const.h"
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#include "util/debug.h"
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#include "util/Thread.H"
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Engine::Engine ( ) : _thread( "RT" )
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{
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_buffers_dropped = 0;
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}
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Engine::~Engine ( )
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{
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}
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/*************/
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/* Callbacks */
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/*************/
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/* THREAD: RT */
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/** This is the jack xrun callback */
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int
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Engine::xrun ( void )
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{
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return 0;
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}
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/* THREAD: RT */
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void
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Engine::freewheel ( bool starting )
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{
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if ( starting )
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DMESSAGE( "entering freewheeling mode" );
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else
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DMESSAGE( "leaving freewheeling mode" );
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}
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/* THREAD: RT (non-RT) */
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int
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Engine::buffer_size ( nframes_t nframes )
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{
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// timeline->resize_buffers( nframes );
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return 0;
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}
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int Engine::sync ( jack_transport_state_t state, jack_position_t *pos )
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{
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}
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void
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Engine::timebase ( jack_transport_state_t state, jack_nframes_t nframes, jack_position_t *pos, int new_pos )
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{
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}
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void
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Engine::timebase ( jack_transport_state_t state, jack_nframes_t nframes, jack_position_t *pos )
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{
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}
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/* THREAD: RT */
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int
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Engine::process ( nframes_t nframes )
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{
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/* FIXME: wrong place for this */
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_thread.set( "RT" );
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if ( freewheeling() )
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{
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/* /\* freewheeling mode/export. We're actually running */
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/* non-RT. Assume that everything is quiescent, locking is */
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/* unecessary and do I/O synchronously *\/ */
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/* if ( timeline ) */
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/* timeline->process( nframes ); */
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/* /\* because we're going faster than realtime. *\/ */
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/* timeline->wait_for_buffers(); */
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}
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else
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{
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if ( ! trylock() )
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{
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/* the data structures we need to access here (tracks and
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* their ports, but not track contents) may be in an
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* inconsistent state at the moment. Just punt and drop this
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* buffer. */
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++_buffers_dropped;
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return 0;
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}
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/* handle chicken/egg problem */
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if ( mixer )
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/* this will initiate the process() call graph for the various
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* number and types of tracks, which will in turn send data out
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* the appropriate ports. */
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mixer->process( nframes );
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unlock();
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}
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return 0;
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}
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/* TRHEAD: RT */
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void
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Engine::thread_init ( void )
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{
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_thread.set( "RT" );
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}
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/* THREAD: RT */
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void
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Engine::shutdown ( void )
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{
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}
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