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/*
Copyright (C) 2006 Paul Davis
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; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <cassert>
#include <ardour/audioengine.h>
#include <ardour/jack_audio_port.h>
using namespace ARDOUR;
JackAudioPort::JackAudioPort (const std::string& name, Flags flgs, AudioBuffer* buf)
: Port (name, flgs)
, JackPort (name, DataType::AUDIO, flgs)
, BaseAudioPort (name, flgs)
, _has_been_mixed_down( false )
{
if (buf) {
_buffer = buf;
_own_buffer = false;
} else {
/* data space will be provided by JACK */
_buffer = new AudioBuffer (0);
_own_buffer = true;
}
}
int
JackAudioPort::reestablish ()
{
int ret = JackPort::reestablish ();
if (ret == 0 && _flags & IsOutput) {
_buffer->clear ();
}
return ret;
}
AudioBuffer&
JackAudioPort::get_audio_buffer (nframes_t nframes, nframes_t offset) {
assert (_buffer);
if (_has_been_mixed_down)
return *_buffer;
if( _flags & IsInput )
_buffer->set_data ((Sample*) jack_port_get_buffer (_port, nframes), nframes+offset);
if (nframes)
_has_been_mixed_down = true;
return *_buffer;
}
void
JackAudioPort::cycle_start (nframes_t nframes, nframes_t offset) {
if( _flags & IsOutput )
_buffer->set_data ((Sample*) jack_port_get_buffer (_port, nframes), nframes+offset);
}
void
JackAudioPort::cycle_end (nframes_t nframes, nframes_t offset) {
_has_been_mixed_down=false;
}
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