mirror of
https://github.com/f4exb/sdrangel.git
synced 2024-11-27 02:09:14 -05:00
89 lines
3.4 KiB
C++
89 lines
3.4 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
|
|
// Copyright (C) 2016 F4EXB //
|
|
// written by Edouard Griffiths //
|
|
// //
|
|
// 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 as version 3 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 V3 for more details. //
|
|
// //
|
|
// You should have received a copy of the GNU General Public License //
|
|
// along with this program. If not, see <http://www.gnu.org/licenses/>. //
|
|
///////////////////////////////////////////////////////////////////////////////////
|
|
|
|
#include "dsp/basebandsamplesource.h"
|
|
#include "util/message.h"
|
|
|
|
BasebandSampleSource::BasebandSampleSource() :
|
|
m_guiMessageQueue(0),
|
|
m_sampleFifo(48000), // arbitrary, will be adjusted to match device sink FIFO size
|
|
m_deviceSampleFifo(0)
|
|
{
|
|
connect(&m_inputMessageQueue, SIGNAL(messageEnqueued()), this, SLOT(handleInputMessages()));
|
|
connect(&m_sampleFifo, SIGNAL(dataWrite(int)), this, SLOT(handleWriteToFifo(int)));
|
|
}
|
|
|
|
BasebandSampleSource::~BasebandSampleSource()
|
|
{
|
|
}
|
|
|
|
void BasebandSampleSource::handleInputMessages()
|
|
{
|
|
Message* message;
|
|
|
|
while ((message = m_inputMessageQueue.pop()) != 0)
|
|
{
|
|
if (handleMessage(*message))
|
|
{
|
|
delete message;
|
|
}
|
|
}
|
|
}
|
|
|
|
void BasebandSampleSource::handleWriteToFifo(int nbSamples)
|
|
{
|
|
handleWriteToFifo(&m_sampleFifo, nbSamples);
|
|
}
|
|
|
|
void BasebandSampleSource::handleWriteToDeviceFifo(int nbSamples)
|
|
{
|
|
handleWriteToFifo(m_deviceSampleFifo, nbSamples);
|
|
}
|
|
|
|
void BasebandSampleSource::handleWriteToFifo(SampleSourceFifo *sampleFifo, int nbSamples)
|
|
{
|
|
SampleVector::iterator writeAt;
|
|
sampleFifo->getWriteIterator(writeAt);
|
|
pullAudio(nbSamples); // Pre-fetch input audio samples this is mandatory to keep things running smoothly
|
|
|
|
for (int i = 0; i < nbSamples; i++)
|
|
{
|
|
pull((*writeAt));
|
|
sampleFifo->bumpIndex(writeAt);
|
|
}
|
|
}
|
|
|
|
|
|
void BasebandSampleSource::setDeviceSampleSourceFifo(SampleSourceFifo *deviceSampleFifo)
|
|
{
|
|
if (m_deviceSampleFifo != deviceSampleFifo)
|
|
{
|
|
if (m_deviceSampleFifo) {
|
|
qDebug("BasebandSampleSource::setDeviceSampleSourceFifo: disconnect device FIFO %p", m_deviceSampleFifo);
|
|
disconnect(m_deviceSampleFifo, SIGNAL(dataWrite(int)), this, SLOT(handleWriteToDeviceFifo(int)));
|
|
}
|
|
|
|
if (deviceSampleFifo) {
|
|
qDebug("BasebandSampleSource::setDeviceSampleSourceFifo: connect device FIFO %p", deviceSampleFifo);
|
|
connect(deviceSampleFifo, SIGNAL(dataWrite(int)), this, SLOT(handleWriteToDeviceFifo(int)));
|
|
}
|
|
|
|
m_deviceSampleFifo = deviceSampleFifo;
|
|
}
|
|
}
|