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sdrangel/plugins/channel/demoddsd/dsddecoder.cpp

61 lines
2.6 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 //
// //
// 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 <QtGlobal>
#include "dsddecoder.h"
#include "audio/audiofifo.h"
DSDDecoder::DSDDecoder()
{
m_decoder.setQuiet();
m_decoder.setUpsampling(6); // force upsampling of audio to 48k
m_decoder.setStereo(true); // force copy to L+R channels
m_decoder.setDecodeMode(DSDcc::DSDDecoder::DSDDecodeAuto, true); // Initialize with auto-detect
m_decoder.setUvQuality(3); // This is gr-dsd default
m_decoder.enableCosineFiltering(false);
m_decoder.setDataRate(DSDcc::DSDDecoder::DSDRate4800);
}
DSDDecoder::~DSDDecoder()
{
}
void DSDDecoder::setBaudRate(int baudRate)
{
if (baudRate == 2400)
{
m_decoder.setDataRate(DSDcc::DSDDecoder::DSDRate2400);
}
else if (baudRate == 4800)
{
m_decoder.setDataRate(DSDcc::DSDDecoder::DSDRate4800);
}
else if (baudRate == 9600)
{
m_decoder.setDataRate(DSDcc::DSDDecoder::DSDRate9600);
}
else // default 4800 bauds
{
m_decoder.setDataRate(DSDcc::DSDDecoder::DSDRate4800);
}
// when setting baud rate activate detection of all possible modes for this rate
// because on the other hand when a mode is selected then the baud rate is automatically changed
m_decoder.setDecodeMode(DSDcc::DSDDecoder::DSDDecodeAuto, true);
}