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//=============================================================================
// MusE
// Linux Music Editor
// $Id:$
//
// Copyright (C) 2002-2006 by Werner Schweer and others
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License version 2.
//
// 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 "globals.h"
#include "audioinput.h"
#include "jackaudio.h"
#include "audio.h"
//---------------------------------------------------------
// AudioInput
//---------------------------------------------------------
AudioInput::AudioInput()
: AudioTrack()
{
// set Default for Input Ports:
_mute = muteDefault();
_channels = 0;
setChannels(2);
//
// buffers are allocated from AudioTrack()
// and not needed by AudioInput which uses
// the JACK supplied buffers
for (int i = 0; i < MAX_CHANNELS; ++i) {
if (buffer[i]) {
free(buffer[i]);
buffer[i] = 0;
}
}
}
//---------------------------------------------------------
// ~AudioInput
//---------------------------------------------------------
AudioInput::~AudioInput()
{
for (int i = 0; i < _channels; ++i) {
if (!jackPort(i).isZero())
audioDriver->unregisterPort(jackPort(i));
}
// AudioInput does not own buffers (they are from JACK)
// make sure ~AudioTrack() does not delete them:
for (int i = 0; i < MAX_CHANNELS; ++i)
buffer[i] = 0;
}
//---------------------------------------------------------
// write
//---------------------------------------------------------
void AudioInput::write(Xml& xml) const
{
xml.stag("AudioInput");
AudioTrack::writeProperties(xml);
xml.etag("AudioInput");
}
//---------------------------------------------------------
// read
//---------------------------------------------------------
void AudioInput::read(QDomNode node)
{
for (;!node.isNull(); node = node.nextSibling()) {
AudioTrack::readProperties(node);
}
setName(name()); // allocate jack ports
}
//---------------------------------------------------------
// setChannels
//---------------------------------------------------------
void AudioInput::setChannels(int n)
{
if (n == _channels)
return;
AudioTrack::setChannels(n);
}
//---------------------------------------------------------
// setName
//---------------------------------------------------------
void AudioInput::setName(const QString& s)
{
Track::setName(s);
for (int i = 0; i < channels(); ++i) {
if (!jackPort(i).isZero()) {
char buffer[128];
snprintf(buffer, 128, "%s-%d", _name.toAscii().data(), i);
if (!jackPort(i).isZero())
audioDriver->setPortName(jackPort(i), buffer);
}
}
}
//---------------------------------------------------------
// collectInputData
// if buffer contains silence, set bufferEmpty to true
//---------------------------------------------------------
void AudioInput::collectInputData()
{
bufferEmpty = false;
for (int ch = 0; ch < channels(); ++ch) {
Port port = jackPort(ch);
if (!port.isZero())
buffer[ch] = audioDriver->getBuffer(port, segmentSize);
}
}
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