non/Timeline/Engine/Timeline.C

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/*******************************************************************************/
/* Copyright (C) 2008 Jonathan Moore Liles */
/* */
/* This program is free software; you can redistribute it and/or modify it */
/* under the terms of the GNU General Public License as published by the */
/* Free Software Foundation; either version 2 of the License, or (at your */
/* option) any later version. */
/* */
/* This program is distributed in the hope that it will be useful, but WITHOUT */
/* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or */
/* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for */
/* more details. */
/* */
/* You should have received a copy of the GNU General Public License along */
/* with This program; see the file COPYING. If not,write to the Free Software */
/* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/*******************************************************************************/
#include "../Timeline.H"
#include "../Transport.H" // for .rolling
#include "../Track.H"
#include "Record_DS.H"
#include "Playback_DS.H"
/** Initiate recording for all armed tracks */
bool
Timeline::record ( void )
{
/* FIXME: right place for this? */
transport->recording = true;
Loggable::block_start();
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nframes_t frame = transport->frame;
for ( int i = tracks->children(); i-- ; )
{
Track *t = (Track*)tracks->child( i );
if ( t->armed() && t->record_ds )
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t->record_ds->start( frame );
}
deactivate();
return true;
}
/** stop recording for all armed tracks */
void
Timeline::stop ( void )
{
nframes_t frame = transport->frame;
for ( int i = tracks->children(); i-- ; )
{
Track *t = (Track*)tracks->child( i );
if ( t->armed() && t->record_ds )
t->record_ds->stop( frame );
}
Loggable::block_end();
activate();
transport->recording = false;
}
/**********/
/* Engine */
/**********/
/** call process() on each track header */
nframes_t
Timeline::process ( nframes_t nframes )
{
for ( int i = tracks->children(); i-- ; )
{
Track *t = (Track*)tracks->child( i );
t->process( nframes );
}
/* FIXME: BOGUS */
return nframes;
}
/* THREAD: RT */
void
Timeline::seek ( nframes_t frame )
{
for ( int i = tracks->children(); i-- ; )
{
Track *t = (Track*)tracks->child( i );
t->seek( frame );
}
}
/* THREAD: RT (non-RT) */
void
Timeline::resize_buffers ( nframes_t nframes )
{
for ( int i = tracks->children(); i-- ; )
{
Track *t = (Track*)tracks->child( i );
t->resize_buffers( nframes );
}
}
/* THREAD: RT */
int
Timeline::seek_pending ( void )
{
int r = 0;
for ( int i = tracks->children(); i-- ; )
{
Track *t = (Track*)tracks->child( i );
if ( t->playback_ds )
r += t->playback_ds->buffer_percent() < 50;
}
return r;
}
/* FIXME: shouldn't these belong to the engine? */
int
Timeline::total_input_buffer_percent ( void )
{
int r = 0;
int cnt = 0;
for ( int i = tracks->children(); i-- ; )
{
Track *t = (Track*)tracks->child( i );
if ( t->record_ds )
{
++cnt;
r += t->record_ds->buffer_percent();
}
}
if ( ! cnt )
return 0;
return r / cnt;
}
int
Timeline::total_output_buffer_percent ( void )
{
int r = 0;
int cnt = 0;
for ( int i = tracks->children(); i-- ; )
{
Track *t = (Track*)tracks->child( i );
if ( t->playback_ds )
{
++cnt;
r += t->playback_ds->buffer_percent();
}
}
if ( ! cnt )
return 0;
return r / cnt;
}
/** wait for I/O threads to fill their buffers */
void
Timeline::wait_for_buffers ( void )
{
while ( total_output_buffer_percent() + total_input_buffer_percent() < 200 )
usleep( 5000 );
}
int
Timeline::total_playback_xruns ( void )
{
int r = 0;
for ( int i = tracks->children(); i-- ; )
{
Track *t = (Track*)tracks->child( i );
if ( t->playback_ds )
r += t->playback_ds->xruns();
}
return r;
}
int
Timeline::total_capture_xruns ( void )
{
int r = 0;
for ( int i = tracks->children(); i-- ; )
{
Track *t = (Track*)tracks->child( i );
if ( t->record_ds )
r += t->record_ds->xruns();
}
return r;
}