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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 "driver/jackaudio.h"
#include "audio.h"
//---------------------------------------------------------
// AudioInput
//---------------------------------------------------------
AudioInput::AudioInput()
: AudioTrack(AUDIO_INPUT)
{
// set Default for Input Ports:
_mute = true;
for (int i = 0; i < MAX_CHANNELS; ++i)
jackPorts[i] = 0;
_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]) {
delete[] buffer[i];
buffer[i] = 0;
}
}
}
//---------------------------------------------------------
// ~AudioInput
//---------------------------------------------------------
AudioInput::~AudioInput()
{
for (int i = 0; i < _channels; ++i) {
if (jackPorts[i])
audioDriver->unregisterPort(jackPorts[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.tag("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
}
//---------------------------------------------------------
// activate1
// register jack port for every channel of this track
//---------------------------------------------------------
void AudioInput::activate1()
{
for (int i = 0; i < channels(); ++i) {
char buffer[128];
snprintf(buffer, 128, "%s-%d", _name.toAscii().data(), i);
// following happens on reconnect to JACK server:
if (jackPorts[i])
printf("AudioInput::activate(): already active!\n");
jackPorts[i] = audioDriver->registerInPort(buffer, false);
}
}
//---------------------------------------------------------
// activate2
// connect all routes to jack; can only be done if
// jack is activ running
//---------------------------------------------------------
void AudioInput::activate2()
{
if (audioState != AUDIO_RUNNING) {
printf("AudioInput::activate2(): no audio running !\n");
abort();
}
for (iRoute i = _inRoutes.begin(); i != _inRoutes.end(); ++i)
audioDriver->connect(i->port, jackPorts[i->channel]);
}
//---------------------------------------------------------
// deactivate
//---------------------------------------------------------
void AudioInput::deactivate()
{
for (iRoute i = _inRoutes.begin(); i != _inRoutes.end(); ++i)
audioDriver->disconnect(i->port, jackPorts[i->channel]);
for (int i = 0; i < channels(); ++i) {
if (jackPorts[i]) {
audioDriver->unregisterPort(jackPorts[i]);
jackPorts[i] = 0;
}
else
printf("AudioInput::deactivate(): not active!\n");
}
}
//---------------------------------------------------------
// 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 (jackPorts[i]) {
char buffer[128];
snprintf(buffer, 128, "%s-%d", _name.toAscii().data(), i);
if (jackPorts[i])
audioDriver->setPortName(jackPorts[i], buffer);
}
}
}
//---------------------------------------------------------
// collectInputData
// if buffer contains silence, set bufferEmpty to true
//---------------------------------------------------------
void AudioInput::collectInputData()
{
bufferEmpty = false;
for (int ch = 0; ch < channels(); ++ch) {
void* jackPort = jackPorts[ch];
if (jackPort)
buffer[ch] = audioDriver->getBuffer(jackPort, segmentSize);
else {
printf("NO JACK PORT\n");
abort();
}
}
}
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