mirror of https://github.com/f4exb/sdrangel.git
Started implementation of a Channel Analyzer plugin. Works basically
This commit is contained in:
f4exb
parent
cba4942971
commit
2c84b82621
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@ -17,15 +17,17 @@ public:
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typedef std::complex<float> cmplx;
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fftfilt(float f1, float f2, int len);
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fftfilt(float f, int len);
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fftfilt(float f2, int len);
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~fftfilt();
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// f1 < f2 ==> bandpass
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// f1 > f2 ==> band reject
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void create_filter(float f1, float f2);
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void rtty_filter(float);
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void create_dsb_filter(float f2);
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int noFilt(const cmplx& in, cmplx **out);
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int runFilt(const cmplx& in, cmplx **out);
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int runSSB(const cmplx& in, cmplx **out, bool usb);
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int runDSB(const cmplx& in, cmplx **out);
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protected:
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int flen;
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@ -44,12 +46,15 @@ protected:
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return (i == len/2) ? 2.0 * fc:
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sin(2 * M_PI * fc * (i - len/2)) / (M_PI * (i - len/2));
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}
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inline float _blackman(int i, int len) {
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return (0.42 -
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0.50 * cos(2.0 * M_PI * i / len) +
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0.08 * cos(4.0 * M_PI * i / len));
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}
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void init_filter();
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void init_dsb_filter();
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};
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@ -6,5 +6,6 @@ add_subdirectory(nfm)
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add_subdirectory(ssb)
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add_subdirectory(tcpsrc)
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add_subdirectory(wfm)
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add_subdirectory(chanalyzer)
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#add_subdirectory(tetra)
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@ -0,0 +1,47 @@
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project(chanalyzer)
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set(chanalyzer_SOURCES
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chanalyzer.cpp
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chanalyzergui.cpp
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chanalyzerplugin.cpp
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)
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set(chanalyzer_HEADERS
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chanalyzer.h
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chanalyzergui.h
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chanalyzerplugin.h
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)
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set(chanalyzer_FORMS
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chanalyzergui.ui
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)
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include_directories(
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.
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${CMAKE_CURRENT_BINARY_DIR}
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${CMAKE_SOURCE_DIR}/include
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${CMAKE_SOURCE_DIR}/include-gpl
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${OPENGL_INCLUDE_DIR}
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)
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#include(${QT_USE_FILE})
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add_definitions(${QT_DEFINITIONS})
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add_definitions(-DQT_PLUGIN)
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add_definitions(-DQT_SHARED)
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#qt5_wrap_cpp(chanalyzer_HEADERS_MOC ${chanalyzer_HEADERS})
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qt5_wrap_ui(chanalyzer_FORMS_HEADERS ${chanalyzer_FORMS})
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add_library(chanalyzer SHARED
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${chanalyzer_SOURCES}
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${chanalyzer_HEADERS_MOC}
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${chanalyzer_FORMS_HEADERS}
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)
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target_link_libraries(chanalyzer
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${QT_LIBRARIES}
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${OPENGL_LIBRARIES}
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sdrbase
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)
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qt5_use_modules(chanalyzer Core Widgets OpenGL Multimedia)
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@ -0,0 +1,193 @@
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///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2012 maintech GmbH, Otto-Hahn-Str. 15, 97204 Hoechberg, Germany //
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// written by Christian Daniel //
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// (c) 2014 Modified by John Greb
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// //
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// This program is free software; you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation as version 3 of the License, or //
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// //
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// This program is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License V3 for more details. //
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// //
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// You should have received a copy of the GNU General Public License //
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// along with this program. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////
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#include <QTime>
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#include <stdio.h>
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#include "audio/audiooutput.h"
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#include "dsp/dspcommands.h"
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#include <iostream>
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#include "chanalyzer.h"
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MESSAGE_CLASS_DEFINITION(ChannelAnalyzer::MsgConfigureChannelAnalyzer, Message)
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ChannelAnalyzer::ChannelAnalyzer(SampleSink* sampleSink) :
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m_sampleSink(sampleSink)
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{
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m_Bandwidth = 5000;
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m_LowCutoff = 300;
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//m_volume = 2.0;
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m_spanLog2 = 3;
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m_sampleRate = 96000;
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m_frequency = 0;
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m_nco.setFreq(m_frequency, m_sampleRate);
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m_nco_test.setFreq(m_frequency, m_sampleRate);
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m_interpolator.create(16, m_sampleRate, 5000);
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m_sampleDistanceRemain = (Real)m_sampleRate / 48000.0;
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//m_audioBuffer.resize(512);
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//m_audioBufferFill = 0;
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m_undersampleCount = 0;
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m_usb = true;
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m_ssb = true;
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SSBFilter = new fftfilt(m_LowCutoff / 48000.0, m_Bandwidth / 48000.0, ssbFftLen);
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DSBFilter = new fftfilt(m_Bandwidth / 48000.0, 2*ssbFftLen);
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// if (!USBFilter) segfault;
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}
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ChannelAnalyzer::~ChannelAnalyzer()
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{
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if (SSBFilter) delete SSBFilter;
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if (DSBFilter) delete DSBFilter;
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}
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void ChannelAnalyzer::configure(MessageQueue* messageQueue,
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Real Bandwidth,
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Real LowCutoff,
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int spanLog2,
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bool ssb)
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{
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Message* cmd = MsgConfigureChannelAnalyzer::create(Bandwidth, LowCutoff, spanLog2, ssb);
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cmd->submit(messageQueue, this);
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}
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void ChannelAnalyzer::feed(SampleVector::const_iterator begin, SampleVector::const_iterator end, bool positiveOnly)
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{
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Complex ci;
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fftfilt::cmplx *sideband, sum;
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int n_out;
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int decim = 1<<(m_spanLog2 - 1);
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unsigned char decim_mask = decim - 1; // counter LSB bit mask for decimation by 2^(m_scaleLog2 - 1)
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for(SampleVector::const_iterator it = begin; it < end; ++it) {
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Complex c(it->real() / 32768.0, it->imag() / 32768.0);
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c *= m_nco.nextIQ();
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/*
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ci = c;
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if (m_ssb) {
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n_out = SSBFilter->runSSB(ci, &sideband, m_usb);
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} else {
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n_out = DSBFilter->noFilt(ci, &sideband);
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}
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*/
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if(m_interpolator.interpolate(&m_sampleDistanceRemain, c, &ci))
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{
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if (m_ssb)
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{
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n_out = SSBFilter->runSSB(ci, &sideband, m_usb);
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}
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else
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{
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n_out = DSBFilter->runDSB(ci, &sideband);
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}
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m_sampleDistanceRemain += (Real)m_sampleRate / 48000.0;
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}
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else
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{
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n_out = 0;
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}
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for (int i = 0; i < n_out; i++)
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{
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// Downsample by 2^(m_scaleLog2 - 1) for SSB band spectrum display
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// smart decimation with bit gain using float arithmetic (23 bits significand)
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sum += sideband[i];
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if (!(m_undersampleCount++ & decim_mask))
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{
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sum /= decim;
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m_sampleBuffer.push_back(Sample(sum.real() * 32768.0, sum.imag() * 32768.0));
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sum = 0;
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}
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}
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}
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if(m_sampleSink != NULL)
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{
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m_sampleSink->feed(m_sampleBuffer.begin(), m_sampleBuffer.end(), m_ssb); // m_ssb = positive only
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}
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m_sampleBuffer.clear();
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}
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void ChannelAnalyzer::start()
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{
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}
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void ChannelAnalyzer::stop()
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{
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}
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bool ChannelAnalyzer::handleMessage(Message* cmd)
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{
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float band, lowCutoff;
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if(DSPSignalNotification::match(cmd)) {
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DSPSignalNotification* signal = (DSPSignalNotification*)cmd;
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//fprintf(stderr, "%d samples/sec, %lld Hz offset", signal->getSampleRate(), signal->getFrequencyOffset());
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m_sampleRate = signal->getSampleRate();
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m_nco.setFreq(-signal->getFrequencyOffset(), m_sampleRate);
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m_interpolator.create(16, m_sampleRate, m_Bandwidth);
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m_sampleDistanceRemain = m_sampleRate / 48000.0;
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cmd->completed();
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return true;
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} else if(MsgConfigureChannelAnalyzer::match(cmd)) {
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MsgConfigureChannelAnalyzer* cfg = (MsgConfigureChannelAnalyzer*)cmd;
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band = cfg->getBandwidth();
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lowCutoff = cfg->getLoCutoff();
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if (band < 0) {
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band = -band;
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lowCutoff = -lowCutoff;
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m_usb = false;
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} else
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m_usb = true;
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if (band < 100.0f)
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{
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band = 100.0f;
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lowCutoff = 0;
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}
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m_Bandwidth = band;
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m_LowCutoff = lowCutoff;
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m_interpolator.create(16, m_sampleRate, band * 2.0f);
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SSBFilter->create_filter(m_LowCutoff / 48000.0f, m_Bandwidth / 48000.0f);
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DSBFilter->create_dsb_filter(m_Bandwidth / 48000.0f);
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//m_volume = cfg->getVolume();
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//m_volume *= m_volume * 0.1;
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m_spanLog2 = cfg->getSpanLog2();
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m_ssb = cfg->getSSB();
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cmd->completed();
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return true;
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} else {
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if(m_sampleSink != NULL)
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return m_sampleSink->handleMessage(cmd);
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else return false;
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}
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}
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@ -0,0 +1,115 @@
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///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2012 maintech GmbH, Otto-Hahn-Str. 15, 97204 Hoechberg, Germany //
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// written by Christian Daniel //
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// //
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// This program is free software; you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation as version 3 of the License, or //
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// //
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// This program is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License V3 for more details. //
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// //
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// You should have received a copy of the GNU General Public License //
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// along with this program. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////
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#ifndef INCLUDE_CHANALYZER_H
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#define INCLUDE_CHANALYZER_H
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#include <vector>
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#include "dsp/samplesink.h"
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#include "dsp/nco.h"
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#include "dsp/interpolator.h"
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#include "dsp/fftfilt.h"
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#include "audio/audiofifo.h"
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#include "util/message.h"
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#define ssbFftLen 1024
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//class AudioFifo;
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class ChannelAnalyzer : public SampleSink {
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public:
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ChannelAnalyzer(SampleSink* sampleSink);
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~ChannelAnalyzer();
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void configure(MessageQueue* messageQueue,
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Real Bandwidth,
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Real LowCutoff,
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int spanLog2,
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bool ssb);
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void feed(SampleVector::const_iterator begin, SampleVector::const_iterator end, bool positiveOnly);
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void start();
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void stop();
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bool handleMessage(Message* cmd);
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private:
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class MsgConfigureChannelAnalyzer : public Message {
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MESSAGE_CLASS_DECLARATION
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public:
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Real getBandwidth() const { return m_Bandwidth; }
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Real getLoCutoff() const { return m_LowCutoff; }
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int getSpanLog2() const { return m_spanLog2; }
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bool getSSB() const { return m_ssb; }
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static MsgConfigureChannelAnalyzer* create(Real Bandwidth,
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Real LowCutoff,
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int spanLog2,
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bool ssb)
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{
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return new MsgConfigureChannelAnalyzer(Bandwidth, LowCutoff, spanLog2, ssb);
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}
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private:
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Real m_Bandwidth;
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Real m_LowCutoff;
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int m_spanLog2;
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bool m_ssb;
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MsgConfigureChannelAnalyzer(Real Bandwidth,
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Real LowCutoff,
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int spanLog2,
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bool ssb) :
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Message(),
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m_Bandwidth(Bandwidth),
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m_LowCutoff(LowCutoff),
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m_spanLog2(spanLog2),
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m_ssb(ssb)
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{ }
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};
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//struct AudioSample {
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// qint16 l;
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// qint16 r;
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//};
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//typedef std::vector<AudioSample> AudioVector;
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Real m_Bandwidth;
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Real m_LowCutoff;
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int m_spanLog2;
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int m_undersampleCount;
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int m_sampleRate;
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int m_frequency;
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bool m_usb;
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bool m_ssb;
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NCO m_nco;
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NCO m_nco_test;
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Interpolator m_interpolator;
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Real m_sampleDistanceRemain;
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fftfilt* SSBFilter;
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fftfilt* DSBFilter;
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SampleSink* m_sampleSink;
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SampleVector m_sampleBuffer;
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//AudioVector m_audioBuffer;
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//uint m_audioBufferFill;
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//AudioFifo* m_audioFifo;
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};
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#endif // INCLUDE_CHANALYZER_H
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@ -0,0 +1,358 @@
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#include <QDockWidget>
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#include <QMainWindow>
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#include "ui_chanalyzergui.h"
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#include "dsp/threadedsamplesink.h"
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#include "dsp/channelizer.h"
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#include "dsp/spectrumvis.h"
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#include "gui/glspectrum.h"
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#include "plugin/pluginapi.h"
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#include "util/simpleserializer.h"
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#include "gui/basicchannelsettingswidget.h"
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#include <iostream>
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#include "chanalyzer.h"
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#include "chanalyzergui.h"
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ChannelAnalyzerGUI* ChannelAnalyzerGUI::create(PluginAPI* pluginAPI)
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{
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ChannelAnalyzerGUI* gui = new ChannelAnalyzerGUI(pluginAPI);
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return gui;
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}
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void ChannelAnalyzerGUI::destroy()
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{
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delete this;
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}
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void ChannelAnalyzerGUI::setName(const QString& name)
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{
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setObjectName(name);
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}
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QString ChannelAnalyzerGUI::getName() const
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{
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return objectName();
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}
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void ChannelAnalyzerGUI::resetToDefaults()
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{
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ui->BW->setValue(30);
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ui->deltaFrequency->setValue(0);
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ui->spanLog2->setValue(3);
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applySettings();
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}
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QByteArray ChannelAnalyzerGUI::serialize() const
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{
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SimpleSerializer s(1);
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s.writeS32(1, m_channelMarker->getCenterFrequency());
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s.writeS32(2, ui->BW->value());
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s.writeBlob(3, ui->spectrumGUI->serialize());
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s.writeU32(4, m_channelMarker->getColor().rgb());
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s.writeS32(5, ui->lowCut->value());
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s.writeS32(6, ui->spanLog2->value());
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return s.final();
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}
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bool ChannelAnalyzerGUI::deserialize(const QByteArray& data)
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{
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SimpleDeserializer d(data);
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if(!d.isValid()) {
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resetToDefaults();
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return false;
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}
|
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|
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if(d.getVersion() == 1) {
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QByteArray bytetmp;
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quint32 u32tmp;
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qint32 tmp;
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d.readS32(1, &tmp, 0);
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m_channelMarker->setCenterFrequency(tmp);
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d.readS32(2, &tmp, 30);
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ui->BW->setValue(tmp);
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d.readBlob(3, &bytetmp);
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ui->spectrumGUI->deserialize(bytetmp);
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if(d.readU32(4, &u32tmp))
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m_channelMarker->setColor(u32tmp);
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d.readS32(5, &tmp, 3);
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ui->lowCut->setValue(tmp);
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d.readS32(6, &tmp, 20);
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ui->spanLog2->setValue(tmp);
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setNewRate(tmp);
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applySettings();
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return true;
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} else {
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resetToDefaults();
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return false;
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}
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}
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bool ChannelAnalyzerGUI::handleMessage(Message* message)
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{
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||||
return false;
|
||||
}
|
||||
|
||||
void ChannelAnalyzerGUI::viewChanged()
|
||||
{
|
||||
applySettings();
|
||||
}
|
||||
|
||||
void ChannelAnalyzerGUI::on_deltaMinus_clicked(bool minus)
|
||||
{
|
||||
int deltaFrequency = m_channelMarker->getCenterFrequency();
|
||||
bool minusDelta = (deltaFrequency < 0);
|
||||
|
||||
if (minus ^ minusDelta) // sign change
|
||||
{
|
||||
m_channelMarker->setCenterFrequency(-deltaFrequency);
|
||||
}
|
||||
}
|
||||
|
||||
void ChannelAnalyzerGUI::on_deltaFrequency_changed(quint64 value)
|
||||
{
|
||||
if (ui->deltaMinus->isChecked()) {
|
||||
m_channelMarker->setCenterFrequency(-value);
|
||||
} else {
|
||||
m_channelMarker->setCenterFrequency(value);
|
||||
}
|
||||
}
|
||||
|
||||
void ChannelAnalyzerGUI::on_BW_valueChanged(int value)
|
||||
{
|
||||
QString s = QString::number(value/10.0, 'f', 1);
|
||||
ui->BWText->setText(tr("%1k").arg(s));
|
||||
m_channelMarker->setBandwidth(value * 100 * 2);
|
||||
|
||||
if (value < 0) {
|
||||
m_channelMarker->setSidebands(ChannelMarker::lsb);
|
||||
} else {
|
||||
m_channelMarker->setSidebands(ChannelMarker::usb);
|
||||
}
|
||||
|
||||
on_lowCut_valueChanged(m_channelMarker->getLowCutoff()/100);
|
||||
}
|
||||
|
||||
int ChannelAnalyzerGUI::getEffectiveLowCutoff(int lowCutoff)
|
||||
{
|
||||
int ssbBW = m_channelMarker->getBandwidth() / 2;
|
||||
int effectiveLowCutoff = lowCutoff;
|
||||
const int guard = 100;
|
||||
|
||||
if (ssbBW < 0) {
|
||||
if (effectiveLowCutoff < ssbBW + guard) {
|
||||
effectiveLowCutoff = ssbBW + guard;
|
||||
}
|
||||
if (effectiveLowCutoff > 0) {
|
||||
effectiveLowCutoff = 0;
|
||||
}
|
||||
} else {
|
||||
if (effectiveLowCutoff > ssbBW - guard) {
|
||||
effectiveLowCutoff = ssbBW - guard;
|
||||
}
|
||||
if (effectiveLowCutoff < 0) {
|
||||
effectiveLowCutoff = 0;
|
||||
}
|
||||
}
|
||||
|
||||
return effectiveLowCutoff;
|
||||
}
|
||||
|
||||
void ChannelAnalyzerGUI::on_lowCut_valueChanged(int value)
|
||||
{
|
||||
int lowCutoff = getEffectiveLowCutoff(value * 100);
|
||||
m_channelMarker->setLowCutoff(lowCutoff);
|
||||
QString s = QString::number(lowCutoff/1000.0, 'f', 1);
|
||||
ui->lowCutText->setText(tr("%1k").arg(s));
|
||||
ui->lowCut->setValue(lowCutoff/100);
|
||||
applySettings();
|
||||
}
|
||||
|
||||
void ChannelAnalyzerGUI::on_spanLog2_valueChanged(int value)
|
||||
{
|
||||
if (setNewRate(value)) {
|
||||
applySettings();
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
void ChannelAnalyzerGUI::on_ssb_toggled(bool checked)
|
||||
{
|
||||
if (checked)
|
||||
{
|
||||
if (ui->BW->value() < 0) {
|
||||
m_channelMarker->setSidebands(ChannelMarker::lsb);
|
||||
} else {
|
||||
m_channelMarker->setSidebands(ChannelMarker::usb);
|
||||
}
|
||||
|
||||
ui->glSpectrum->setCenterFrequency(m_rate/2);
|
||||
ui->glSpectrum->setSampleRate(m_rate);
|
||||
ui->glSpectrum->setSsbSpectrum(true);
|
||||
|
||||
on_lowCut_valueChanged(m_channelMarker->getLowCutoff()/100);
|
||||
}
|
||||
else
|
||||
{
|
||||
m_channelMarker->setSidebands(ChannelMarker::dsb);
|
||||
|
||||
ui->glSpectrum->setCenterFrequency(0);
|
||||
ui->glSpectrum->setSampleRate(2*m_rate);
|
||||
ui->glSpectrum->setSsbSpectrum(false);
|
||||
|
||||
applySettings();
|
||||
}
|
||||
}
|
||||
|
||||
void ChannelAnalyzerGUI::onWidgetRolled(QWidget* widget, bool rollDown)
|
||||
{
|
||||
/*
|
||||
if((widget == ui->spectrumContainer) && (m_ssbDemod != NULL))
|
||||
m_ssbDemod->setSpectrum(m_threadedSampleSink->getMessageQueue(), rollDown);
|
||||
*/
|
||||
}
|
||||
|
||||
void ChannelAnalyzerGUI::onMenuDoubleClicked()
|
||||
{
|
||||
if(!m_basicSettingsShown) {
|
||||
m_basicSettingsShown = true;
|
||||
BasicChannelSettingsWidget* bcsw = new BasicChannelSettingsWidget(m_channelMarker, this);
|
||||
bcsw->show();
|
||||
}
|
||||
}
|
||||
|
||||
ChannelAnalyzerGUI::ChannelAnalyzerGUI(PluginAPI* pluginAPI, QWidget* parent) :
|
||||
RollupWidget(parent),
|
||||
ui(new Ui::ChannelAnalyzerGUI),
|
||||
m_pluginAPI(pluginAPI),
|
||||
m_basicSettingsShown(false),
|
||||
m_rate(6000),
|
||||
m_spanLog2(3)
|
||||
{
|
||||
ui->setupUi(this);
|
||||
setAttribute(Qt::WA_DeleteOnClose, true);
|
||||
connect(this, SIGNAL(widgetRolled(QWidget*,bool)), this, SLOT(onWidgetRolled(QWidget*,bool)));
|
||||
connect(this, SIGNAL(menuDoubleClickEvent()), this, SLOT(onMenuDoubleClicked()));
|
||||
|
||||
//m_audioFifo = new AudioFifo(4, 48000 / 4);
|
||||
m_spectrumVis = new SpectrumVis(ui->glSpectrum);
|
||||
m_channelAnalyzer = new ChannelAnalyzer(m_spectrumVis);
|
||||
m_channelizer = new Channelizer(m_channelAnalyzer);
|
||||
m_threadedSampleSink = new ThreadedSampleSink(m_channelizer);
|
||||
//m_pluginAPI->addAudioSource(m_audioFifo);
|
||||
m_pluginAPI->addSampleSink(m_threadedSampleSink);
|
||||
|
||||
ui->glSpectrum->setCenterFrequency(m_rate/2);
|
||||
ui->glSpectrum->setSampleRate(m_rate);
|
||||
ui->glSpectrum->setDisplayWaterfall(true);
|
||||
ui->glSpectrum->setDisplayMaxHold(true);
|
||||
ui->glSpectrum->setSsbSpectrum(true);
|
||||
|
||||
m_channelMarker = new ChannelMarker(this);
|
||||
m_channelMarker->setColor(Qt::gray);
|
||||
m_channelMarker->setBandwidth(m_rate);
|
||||
m_channelMarker->setSidebands(ChannelMarker::usb);
|
||||
m_channelMarker->setCenterFrequency(0);
|
||||
m_channelMarker->setVisible(true);
|
||||
connect(m_channelMarker, SIGNAL(changed()), this, SLOT(viewChanged()));
|
||||
m_pluginAPI->addChannelMarker(m_channelMarker);
|
||||
|
||||
ui->spectrumGUI->setBuddies(m_threadedSampleSink->getMessageQueue(), m_spectrumVis, ui->glSpectrum);
|
||||
|
||||
applySettings();
|
||||
}
|
||||
|
||||
ChannelAnalyzerGUI::~ChannelAnalyzerGUI()
|
||||
{
|
||||
m_pluginAPI->removeChannelInstance(this);
|
||||
//m_pluginAPI->removeAudioSource(m_audioFifo);
|
||||
m_pluginAPI->removeSampleSink(m_threadedSampleSink);
|
||||
delete m_threadedSampleSink;
|
||||
delete m_channelizer;
|
||||
delete m_channelAnalyzer;
|
||||
delete m_spectrumVis;
|
||||
//delete m_audioFifo;
|
||||
delete m_channelMarker;
|
||||
delete ui;
|
||||
}
|
||||
|
||||
bool ChannelAnalyzerGUI::setNewRate(int spanLog2)
|
||||
{
|
||||
if ((spanLog2 < 1) || (spanLog2 > 5)) {
|
||||
return false;
|
||||
}
|
||||
|
||||
m_spanLog2 = spanLog2;
|
||||
m_rate = 48000 / (1<<spanLog2);
|
||||
|
||||
if (ui->BW->value() < -m_rate/100) {
|
||||
ui->BW->setValue(-m_rate/100);
|
||||
m_channelMarker->setBandwidth(-m_rate*2);
|
||||
} else if (ui->BW->value() > m_rate/100) {
|
||||
ui->BW->setValue(m_rate/100);
|
||||
m_channelMarker->setBandwidth(m_rate*2);
|
||||
}
|
||||
|
||||
if (ui->lowCut->value() < -m_rate/100) {
|
||||
ui->lowCut->setValue(-m_rate/100);
|
||||
m_channelMarker->setLowCutoff(-m_rate);
|
||||
} else if (ui->lowCut->value() > m_rate/100) {
|
||||
ui->lowCut->setValue(m_rate/100);
|
||||
m_channelMarker->setLowCutoff(m_rate);
|
||||
}
|
||||
|
||||
ui->BW->setMinimum(-m_rate/100);
|
||||
ui->lowCut->setMinimum(-m_rate/100);
|
||||
ui->BW->setMaximum(m_rate/100);
|
||||
ui->lowCut->setMaximum(m_rate/100);
|
||||
|
||||
QString s = QString::number(m_rate/1000.0, 'f', 1);
|
||||
ui->spanText->setText(tr("%1k").arg(s));
|
||||
|
||||
if (ui->ssb->isChecked())
|
||||
{
|
||||
if (ui->BW->value() < 0) {
|
||||
m_channelMarker->setSidebands(ChannelMarker::lsb);
|
||||
} else {
|
||||
m_channelMarker->setSidebands(ChannelMarker::usb);
|
||||
}
|
||||
|
||||
ui->glSpectrum->setCenterFrequency(m_rate/2);
|
||||
ui->glSpectrum->setSampleRate(m_rate);
|
||||
ui->glSpectrum->setSsbSpectrum(true);
|
||||
} else {
|
||||
m_channelMarker->setSidebands(ChannelMarker::dsb);
|
||||
|
||||
ui->glSpectrum->setCenterFrequency(0);
|
||||
ui->glSpectrum->setSampleRate(2*m_rate);
|
||||
ui->glSpectrum->setSsbSpectrum(false);
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
void ChannelAnalyzerGUI::applySettings()
|
||||
{
|
||||
setTitleColor(m_channelMarker->getColor());
|
||||
ui->deltaFrequency->setValue(abs(m_channelMarker->getCenterFrequency()));
|
||||
ui->deltaMinus->setChecked(m_channelMarker->getCenterFrequency() < 0);
|
||||
m_channelizer->configure(m_threadedSampleSink->getMessageQueue(),
|
||||
48000,
|
||||
m_channelMarker->getCenterFrequency());
|
||||
m_channelAnalyzer->configure(m_threadedSampleSink->getMessageQueue(),
|
||||
ui->BW->value() * 100.0,
|
||||
ui->lowCut->value() * 100.0,
|
||||
m_spanLog2,
|
||||
ui->ssb->isChecked());
|
||||
}
|
||||
|
||||
void ChannelAnalyzerGUI::leaveEvent(QEvent*)
|
||||
{
|
||||
m_channelMarker->setHighlighted(false);
|
||||
}
|
||||
|
||||
void ChannelAnalyzerGUI::enterEvent(QEvent*)
|
||||
{
|
||||
m_channelMarker->setHighlighted(true);
|
||||
}
|
||||
|
||||
|
|
@ -0,0 +1,72 @@
|
|||
#ifndef INCLUDE_CHANNELANALYZERGUI_H
|
||||
#define INCLUDE_CHANNELANALYZERGUI_H
|
||||
|
||||
#include "gui/rollupwidget.h"
|
||||
#include "plugin/plugingui.h"
|
||||
|
||||
class PluginAPI;
|
||||
class ChannelMarker;
|
||||
|
||||
//class AudioFifo;
|
||||
class ThreadedSampleSink;
|
||||
class Channelizer;
|
||||
class ChannelAnalyzer;
|
||||
class SpectrumVis;
|
||||
|
||||
namespace Ui {
|
||||
class ChannelAnalyzerGUI;
|
||||
}
|
||||
|
||||
class ChannelAnalyzerGUI : public RollupWidget, public PluginGUI {
|
||||
Q_OBJECT
|
||||
|
||||
public:
|
||||
static ChannelAnalyzerGUI* create(PluginAPI* pluginAPI);
|
||||
void destroy();
|
||||
|
||||
void setName(const QString& name);
|
||||
QString getName() const;
|
||||
|
||||
void resetToDefaults();
|
||||
QByteArray serialize() const;
|
||||
bool deserialize(const QByteArray& data);
|
||||
|
||||
bool handleMessage(Message* message);
|
||||
|
||||
private slots:
|
||||
void viewChanged();
|
||||
void on_deltaFrequency_changed(quint64 value);
|
||||
void on_deltaMinus_clicked(bool minus);
|
||||
void on_BW_valueChanged(int value);
|
||||
void on_lowCut_valueChanged(int value);
|
||||
void on_spanLog2_valueChanged(int value);
|
||||
void on_ssb_toggled(bool checked);
|
||||
void onWidgetRolled(QWidget* widget, bool rollDown);
|
||||
void onMenuDoubleClicked();
|
||||
|
||||
private:
|
||||
Ui::ChannelAnalyzerGUI* ui;
|
||||
PluginAPI* m_pluginAPI;
|
||||
ChannelMarker* m_channelMarker;
|
||||
bool m_basicSettingsShown;
|
||||
int m_rate;
|
||||
int m_spanLog2;
|
||||
|
||||
//AudioFifo* m_audioFifo;
|
||||
ThreadedSampleSink* m_threadedSampleSink;
|
||||
Channelizer* m_channelizer;
|
||||
ChannelAnalyzer* m_channelAnalyzer;
|
||||
SpectrumVis* m_spectrumVis;
|
||||
|
||||
explicit ChannelAnalyzerGUI(PluginAPI* pluginAPI, QWidget* parent = NULL);
|
||||
~ChannelAnalyzerGUI();
|
||||
|
||||
int getEffectiveLowCutoff(int lowCutoff);
|
||||
bool setNewRate(int spanLog2);
|
||||
void applySettings();
|
||||
|
||||
void leaveEvent(QEvent*);
|
||||
void enterEvent(QEvent*);
|
||||
};
|
||||
|
||||
#endif // INCLUDE_CHANNELANALYZERGUI_H
|
||||
|
|
@ -0,0 +1,416 @@
|
|||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<ui version="4.0">
|
||||
<class>ChannelAnalyzerGUI</class>
|
||||
<widget class="RollupWidget" name="ChannelAnalyzerGUI">
|
||||
<property name="geometry">
|
||||
<rect>
|
||||
<x>0</x>
|
||||
<y>0</y>
|
||||
<width>302</width>
|
||||
<height>439</height>
|
||||
</rect>
|
||||
</property>
|
||||
<property name="minimumSize">
|
||||
<size>
|
||||
<width>302</width>
|
||||
<height>0</height>
|
||||
</size>
|
||||
</property>
|
||||
<property name="windowTitle">
|
||||
<string>Channel Analyzer</string>
|
||||
</property>
|
||||
<widget class="QWidget" name="settingsContainer" native="true">
|
||||
<property name="geometry">
|
||||
<rect>
|
||||
<x>35</x>
|
||||
<y>35</y>
|
||||
<width>242</width>
|
||||
<height>96</height>
|
||||
</rect>
|
||||
</property>
|
||||
<property name="font">
|
||||
<font>
|
||||
<pointsize>8</pointsize>
|
||||
</font>
|
||||
</property>
|
||||
<property name="windowTitle">
|
||||
<string>Settings</string>
|
||||
</property>
|
||||
<layout class="QGridLayout" name="gridLayout">
|
||||
<property name="leftMargin">
|
||||
<number>2</number>
|
||||
</property>
|
||||
<property name="topMargin">
|
||||
<number>2</number>
|
||||
</property>
|
||||
<property name="rightMargin">
|
||||
<number>2</number>
|
||||
</property>
|
||||
<property name="bottomMargin">
|
||||
<number>2</number>
|
||||
</property>
|
||||
<property name="horizontalSpacing">
|
||||
<number>4</number>
|
||||
</property>
|
||||
<property name="verticalSpacing">
|
||||
<number>3</number>
|
||||
</property>
|
||||
<item row="2" column="1">
|
||||
<widget class="QSlider" name="BW">
|
||||
<property name="font">
|
||||
<font>
|
||||
<pointsize>8</pointsize>
|
||||
</font>
|
||||
</property>
|
||||
<property name="minimum">
|
||||
<number>-60</number>
|
||||
</property>
|
||||
<property name="maximum">
|
||||
<number>60</number>
|
||||
</property>
|
||||
<property name="pageStep">
|
||||
<number>1</number>
|
||||
</property>
|
||||
<property name="value">
|
||||
<number>30</number>
|
||||
</property>
|
||||
<property name="orientation">
|
||||
<enum>Qt::Horizontal</enum>
|
||||
</property>
|
||||
</widget>
|
||||
</item>
|
||||
<item row="2" column="2">
|
||||
<widget class="QLabel" name="BWText">
|
||||
<property name="minimumSize">
|
||||
<size>
|
||||
<width>50</width>
|
||||
<height>0</height>
|
||||
</size>
|
||||
</property>
|
||||
<property name="font">
|
||||
<font>
|
||||
<pointsize>8</pointsize>
|
||||
</font>
|
||||
</property>
|
||||
<property name="text">
|
||||
<string>3.0k</string>
|
||||
</property>
|
||||
<property name="alignment">
|
||||
<set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
|
||||
</property>
|
||||
</widget>
|
||||
</item>
|
||||
<item row="0" column="1">
|
||||
<widget class="ValueDial" name="deltaFrequency" native="true">
|
||||
<property name="sizePolicy">
|
||||
<sizepolicy hsizetype="Maximum" vsizetype="Maximum">
|
||||
<horstretch>0</horstretch>
|
||||
<verstretch>0</verstretch>
|
||||
</sizepolicy>
|
||||
</property>
|
||||
<property name="minimumSize">
|
||||
<size>
|
||||
<width>32</width>
|
||||
<height>16</height>
|
||||
</size>
|
||||
</property>
|
||||
<property name="font">
|
||||
<font>
|
||||
<family>Monospace</family>
|
||||
<pointsize>10</pointsize>
|
||||
</font>
|
||||
</property>
|
||||
<property name="cursor">
|
||||
<cursorShape>SizeVerCursor</cursorShape>
|
||||
</property>
|
||||
<property name="focusPolicy">
|
||||
<enum>Qt::StrongFocus</enum>
|
||||
</property>
|
||||
<property name="toolTip">
|
||||
<string>Demod shift frequency from center in Hz</string>
|
||||
</property>
|
||||
</widget>
|
||||
</item>
|
||||
<item row="2" column="0">
|
||||
<widget class="QLabel" name="BWLabel">
|
||||
<property name="font">
|
||||
<font>
|
||||
<pointsize>8</pointsize>
|
||||
</font>
|
||||
</property>
|
||||
<property name="text">
|
||||
<string>BW</string>
|
||||
</property>
|
||||
</widget>
|
||||
</item>
|
||||
<item row="0" column="2">
|
||||
<widget class="QLabel" name="deltaUnits">
|
||||
<property name="font">
|
||||
<font>
|
||||
<pointsize>8</pointsize>
|
||||
</font>
|
||||
</property>
|
||||
<property name="text">
|
||||
<string>Hz</string>
|
||||
</property>
|
||||
</widget>
|
||||
</item>
|
||||
<item row="1" column="0">
|
||||
<widget class="QLabel" name="spanLabel">
|
||||
<property name="font">
|
||||
<font>
|
||||
<pointsize>8</pointsize>
|
||||
</font>
|
||||
</property>
|
||||
<property name="text">
|
||||
<string>Span</string>
|
||||
</property>
|
||||
</widget>
|
||||
</item>
|
||||
<item row="3" column="0">
|
||||
<widget class="QLabel" name="lowCutLabel">
|
||||
<property name="font">
|
||||
<font>
|
||||
<pointsize>8</pointsize>
|
||||
</font>
|
||||
</property>
|
||||
<property name="text">
|
||||
<string>Low cut.</string>
|
||||
</property>
|
||||
</widget>
|
||||
</item>
|
||||
<item row="0" column="0">
|
||||
<widget class="QRadioButton" name="deltaMinus">
|
||||
<property name="font">
|
||||
<font>
|
||||
<pointsize>8</pointsize>
|
||||
</font>
|
||||
</property>
|
||||
<property name="layoutDirection">
|
||||
<enum>Qt::RightToLeft</enum>
|
||||
</property>
|
||||
<property name="text">
|
||||
<string>Minus</string>
|
||||
</property>
|
||||
</widget>
|
||||
</item>
|
||||
<item row="3" column="1">
|
||||
<widget class="QSlider" name="lowCut">
|
||||
<property name="font">
|
||||
<font>
|
||||
<pointsize>8</pointsize>
|
||||
</font>
|
||||
</property>
|
||||
<property name="minimum">
|
||||
<number>-60</number>
|
||||
</property>
|
||||
<property name="maximum">
|
||||
<number>60</number>
|
||||
</property>
|
||||
<property name="pageStep">
|
||||
<number>1</number>
|
||||
</property>
|
||||
<property name="value">
|
||||
<number>3</number>
|
||||
</property>
|
||||
<property name="orientation">
|
||||
<enum>Qt::Horizontal</enum>
|
||||
</property>
|
||||
</widget>
|
||||
</item>
|
||||
<item row="3" column="2">
|
||||
<widget class="QLabel" name="lowCutText">
|
||||
<property name="minimumSize">
|
||||
<size>
|
||||
<width>50</width>
|
||||
<height>0</height>
|
||||
</size>
|
||||
</property>
|
||||
<property name="font">
|
||||
<font>
|
||||
<pointsize>8</pointsize>
|
||||
</font>
|
||||
</property>
|
||||
<property name="text">
|
||||
<string>0.3k</string>
|
||||
</property>
|
||||
<property name="alignment">
|
||||
<set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
|
||||
</property>
|
||||
</widget>
|
||||
</item>
|
||||
<item row="1" column="2">
|
||||
<widget class="QLabel" name="spanText">
|
||||
<property name="font">
|
||||
<font>
|
||||
<pointsize>8</pointsize>
|
||||
</font>
|
||||
</property>
|
||||
<property name="text">
|
||||
<string>6.0k</string>
|
||||
</property>
|
||||
<property name="alignment">
|
||||
<set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
|
||||
</property>
|
||||
</widget>
|
||||
</item>
|
||||
<item row="1" column="1">
|
||||
<widget class="QSlider" name="spanLog2">
|
||||
<property name="font">
|
||||
<font>
|
||||
<pointsize>11</pointsize>
|
||||
</font>
|
||||
</property>
|
||||
<property name="minimum">
|
||||
<number>1</number>
|
||||
</property>
|
||||
<property name="maximum">
|
||||
<number>5</number>
|
||||
</property>
|
||||
<property name="pageStep">
|
||||
<number>1</number>
|
||||
</property>
|
||||
<property name="value">
|
||||
<number>3</number>
|
||||
</property>
|
||||
<property name="sliderPosition">
|
||||
<number>3</number>
|
||||
</property>
|
||||
<property name="orientation">
|
||||
<enum>Qt::Horizontal</enum>
|
||||
</property>
|
||||
<property name="invertedAppearance">
|
||||
<bool>true</bool>
|
||||
</property>
|
||||
<property name="invertedControls">
|
||||
<bool>true</bool>
|
||||
</property>
|
||||
</widget>
|
||||
</item>
|
||||
<item row="0" column="3">
|
||||
<spacer name="hSpacer1">
|
||||
<property name="orientation">
|
||||
<enum>Qt::Horizontal</enum>
|
||||
</property>
|
||||
<property name="sizeHint" stdset="0">
|
||||
<size>
|
||||
<width>40</width>
|
||||
<height>20</height>
|
||||
</size>
|
||||
</property>
|
||||
</spacer>
|
||||
</item>
|
||||
<item row="2" column="3">
|
||||
<spacer name="hSpacer3">
|
||||
<property name="orientation">
|
||||
<enum>Qt::Horizontal</enum>
|
||||
</property>
|
||||
<property name="sizeHint" stdset="0">
|
||||
<size>
|
||||
<width>40</width>
|
||||
<height>20</height>
|
||||
</size>
|
||||
</property>
|
||||
</spacer>
|
||||
</item>
|
||||
<item row="3" column="3">
|
||||
<spacer name="hSpacer4">
|
||||
<property name="orientation">
|
||||
<enum>Qt::Horizontal</enum>
|
||||
</property>
|
||||
<property name="sizeHint" stdset="0">
|
||||
<size>
|
||||
<width>40</width>
|
||||
<height>20</height>
|
||||
</size>
|
||||
</property>
|
||||
</spacer>
|
||||
</item>
|
||||
<item row="1" column="3">
|
||||
<widget class="QCheckBox" name="ssb">
|
||||
<property name="text">
|
||||
<string>SSB</string>
|
||||
</property>
|
||||
</widget>
|
||||
</item>
|
||||
</layout>
|
||||
</widget>
|
||||
<widget class="QWidget" name="spectrumContainer" native="true">
|
||||
<property name="geometry">
|
||||
<rect>
|
||||
<x>40</x>
|
||||
<y>140</y>
|
||||
<width>241</width>
|
||||
<height>284</height>
|
||||
</rect>
|
||||
</property>
|
||||
<property name="windowTitle">
|
||||
<string>Channel Spectrum</string>
|
||||
</property>
|
||||
<layout class="QVBoxLayout" name="verticalLayout">
|
||||
<property name="spacing">
|
||||
<number>2</number>
|
||||
</property>
|
||||
<property name="leftMargin">
|
||||
<number>3</number>
|
||||
</property>
|
||||
<property name="topMargin">
|
||||
<number>3</number>
|
||||
</property>
|
||||
<property name="rightMargin">
|
||||
<number>3</number>
|
||||
</property>
|
||||
<property name="bottomMargin">
|
||||
<number>3</number>
|
||||
</property>
|
||||
<item>
|
||||
<widget class="GLSpectrum" name="glSpectrum" native="true">
|
||||
<property name="minimumSize">
|
||||
<size>
|
||||
<width>200</width>
|
||||
<height>250</height>
|
||||
</size>
|
||||
</property>
|
||||
<property name="font">
|
||||
<font>
|
||||
<family>Courier</family>
|
||||
<pointsize>8</pointsize>
|
||||
</font>
|
||||
</property>
|
||||
</widget>
|
||||
</item>
|
||||
<item>
|
||||
<widget class="GLSpectrumGUI" name="spectrumGUI" native="true"/>
|
||||
</item>
|
||||
</layout>
|
||||
</widget>
|
||||
</widget>
|
||||
<customwidgets>
|
||||
<customwidget>
|
||||
<class>GLSpectrum</class>
|
||||
<extends>QWidget</extends>
|
||||
<header>gui/glspectrum.h</header>
|
||||
<container>1</container>
|
||||
</customwidget>
|
||||
<customwidget>
|
||||
<class>GLSpectrumGUI</class>
|
||||
<extends>QWidget</extends>
|
||||
<header>gui/glspectrumgui.h</header>
|
||||
<container>1</container>
|
||||
</customwidget>
|
||||
<customwidget>
|
||||
<class>RollupWidget</class>
|
||||
<extends>QWidget</extends>
|
||||
<header>gui/rollupwidget.h</header>
|
||||
<container>1</container>
|
||||
</customwidget>
|
||||
<customwidget>
|
||||
<class>ValueDial</class>
|
||||
<extends>QWidget</extends>
|
||||
<header>gui/valuedial.h</header>
|
||||
<container>1</container>
|
||||
</customwidget>
|
||||
</customwidgets>
|
||||
<resources/>
|
||||
<connections/>
|
||||
</ui>
|
||||
|
|
@ -0,0 +1,53 @@
|
|||
#include <QtPlugin>
|
||||
#include <QAction>
|
||||
#include "plugin/pluginapi.h"
|
||||
#include "chanalyzergui.h"
|
||||
#include "chanalyzerplugin.h"
|
||||
|
||||
const PluginDescriptor ChannelAnalyzerPlugin::m_pluginDescriptor = {
|
||||
QString("Channel Analyzer"),
|
||||
QString("1.0"),
|
||||
QString("(c) 2015 Edouard Griffiths, F4EXB"),
|
||||
QString("https://github.com/f4exb/rtl-sdrangelove/tree/f4exb"),
|
||||
true,
|
||||
QString("https://github.com/f4exb/rtl-sdrangelove/tree/f4exb")
|
||||
};
|
||||
|
||||
ChannelAnalyzerPlugin::ChannelAnalyzerPlugin(QObject* parent) :
|
||||
QObject(parent)
|
||||
{
|
||||
}
|
||||
|
||||
const PluginDescriptor& ChannelAnalyzerPlugin::getPluginDescriptor() const
|
||||
{
|
||||
return m_pluginDescriptor;
|
||||
}
|
||||
|
||||
void ChannelAnalyzerPlugin::initPlugin(PluginAPI* pluginAPI)
|
||||
{
|
||||
m_pluginAPI = pluginAPI;
|
||||
|
||||
// register demodulator
|
||||
QAction* action = new QAction(tr("&ChannelAnalyzer"), this);
|
||||
connect(action, SIGNAL(triggered()), this, SLOT(createInstanceChannelAnalyzer()));
|
||||
m_pluginAPI->registerChannel("org.f4exb.sdrangelove.channel.chanalyzer", this, action);
|
||||
}
|
||||
|
||||
PluginGUI* ChannelAnalyzerPlugin::createChannel(const QString& channelName)
|
||||
{
|
||||
if(channelName == "org.f4exb.sdrangelove.channel.chanalyzer") {
|
||||
ChannelAnalyzerGUI* gui = ChannelAnalyzerGUI::create(m_pluginAPI);
|
||||
m_pluginAPI->registerChannelInstance("org.f4exb.sdrangelove.channel.chanalyzer", gui);
|
||||
m_pluginAPI->addChannelRollup(gui);
|
||||
return gui;
|
||||
} else {
|
||||
return NULL;
|
||||
}
|
||||
}
|
||||
|
||||
void ChannelAnalyzerPlugin::createInstanceChannelAnalyzer()
|
||||
{
|
||||
ChannelAnalyzerGUI* gui = ChannelAnalyzerGUI::create(m_pluginAPI);
|
||||
m_pluginAPI->registerChannelInstance("org.f4exb.sdrangelove.channel.chanalyzer", gui);
|
||||
m_pluginAPI->addChannelRollup(gui);
|
||||
}
|
||||
|
|
@ -0,0 +1,29 @@
|
|||
#ifndef INCLUDE_CHANALYZERPLUGIN_H
|
||||
#define INCLUDE_CHANALYZERPLUGIN_H
|
||||
|
||||
#include <QObject>
|
||||
#include "plugin/plugininterface.h"
|
||||
|
||||
class ChannelAnalyzerPlugin : public QObject, PluginInterface {
|
||||
Q_OBJECT
|
||||
Q_INTERFACES(PluginInterface)
|
||||
Q_PLUGIN_METADATA(IID "org.f4exb.sdrangelove.channel.chanalyzer")
|
||||
|
||||
public:
|
||||
explicit ChannelAnalyzerPlugin(QObject* parent = NULL);
|
||||
|
||||
const PluginDescriptor& getPluginDescriptor() const;
|
||||
void initPlugin(PluginAPI* pluginAPI);
|
||||
|
||||
PluginGUI* createChannel(const QString& channelName);
|
||||
|
||||
private:
|
||||
static const PluginDescriptor m_pluginDescriptor;
|
||||
|
||||
PluginAPI* m_pluginAPI;
|
||||
|
||||
private slots:
|
||||
void createInstanceChannelAnalyzer();
|
||||
};
|
||||
|
||||
#endif // INCLUDE_CHANALYZERPLUGIN_H
|
||||
|
|
@ -80,6 +80,13 @@ fftfilt::fftfilt(float f1, float f2, int len)
|
|||
create_filter(f1, f2);
|
||||
}
|
||||
|
||||
fftfilt::fftfilt(float f2, int len)
|
||||
{
|
||||
flen = len;
|
||||
init_filter();
|
||||
create_dsb_filter(f2);
|
||||
}
|
||||
|
||||
fftfilt::~fftfilt()
|
||||
{
|
||||
if (fft) delete fft;
|
||||
|
|
@ -130,6 +137,43 @@ void fftfilt::create_filter(float f1, float f2)
|
|||
}
|
||||
}
|
||||
|
||||
// Double the size of FFT used for equivalent SSB filter or assume FFT is half the size of the one used for SSB
|
||||
void fftfilt::create_dsb_filter(float f2)
|
||||
{
|
||||
// initialize the filter to zero
|
||||
memset(filter, 0, flen * sizeof(cmplx));
|
||||
|
||||
for (int i = 0; i < flen2; i++) {
|
||||
filter[i] = fsinc(f2, i, flen2);
|
||||
filter[i] *= _blackman(i, flen2);
|
||||
}
|
||||
|
||||
fft->ComplexFFT(filter);
|
||||
|
||||
// normalize the output filter for unity gain
|
||||
float scale = 0, mag;
|
||||
for (int i = 0; i < flen2; i++) {
|
||||
mag = abs(filter[i]);
|
||||
if (mag > scale) scale = mag;
|
||||
}
|
||||
if (scale != 0) {
|
||||
for (int i = 0; i < flen; i++)
|
||||
filter[i] /= scale;
|
||||
}
|
||||
}
|
||||
|
||||
// test bypass
|
||||
int fftfilt::noFilt(const cmplx & in, cmplx **out)
|
||||
{
|
||||
data[inptr++] = in;
|
||||
if (inptr < flen2)
|
||||
return 0;
|
||||
inptr = 0;
|
||||
|
||||
*out = data;
|
||||
return flen2;
|
||||
}
|
||||
|
||||
// Filter with fast convolution (overlap-add algorithm).
|
||||
int fftfilt::runFilt(const cmplx & in, cmplx **out)
|
||||
{
|
||||
|
|
@ -190,6 +234,36 @@ int fftfilt::runSSB(const cmplx & in, cmplx **out, bool usb)
|
|||
return flen2;
|
||||
}
|
||||
|
||||
// Version for double sideband. You have to double the FFT size used for SSB.
|
||||
int fftfilt::runDSB(const cmplx & in, cmplx **out)
|
||||
{
|
||||
data[inptr++] = in;
|
||||
if (inptr < flen2)
|
||||
return 0;
|
||||
inptr = 0;
|
||||
|
||||
fft->ComplexFFT(data);
|
||||
|
||||
for (int i = 0; i < flen2; i++) {
|
||||
data[i] *= filter[i];
|
||||
data[flen2 + i] *= filter[flen2 + i];
|
||||
}
|
||||
|
||||
// in-place FFT: freqdata overwritten with filtered timedata
|
||||
fft->InverseComplexFFT(data);
|
||||
|
||||
// overlap and add
|
||||
for (int i = 0; i < flen2; i++) {
|
||||
output[i] = ovlbuf[i] + data[i];
|
||||
ovlbuf[i] = data[i+flen2];
|
||||
}
|
||||
|
||||
memset (data, 0, flen * sizeof(cmplx));
|
||||
|
||||
*out = output;
|
||||
return flen2;
|
||||
}
|
||||
|
||||
/* Sliding FFT from Fldigi */
|
||||
|
||||
struct sfft::vrot_bins_pair {
|
||||
|
|
|
|||
|
|
@ -89,9 +89,11 @@ void ScaleEngine::calcCharSize()
|
|||
|
||||
void ScaleEngine::calcScaleFactor()
|
||||
{
|
||||
double median;
|
||||
double median, range, freqBase;
|
||||
|
||||
median = ((m_rangeMax - m_rangeMin) / 2.0) + m_rangeMin;
|
||||
range = (m_rangeMax - m_rangeMin);
|
||||
freqBase = (median == 0 ? range : median);
|
||||
m_scale = 1.0;
|
||||
|
||||
switch(m_physicalUnit) {
|
||||
|
|
@ -100,15 +102,15 @@ void ScaleEngine::calcScaleFactor()
|
|||
break;
|
||||
|
||||
case Unit::Frequency:
|
||||
if(median < 1000.0) {
|
||||
if(freqBase < 1000.0) {
|
||||
m_unitStr = QObject::tr("Hz");
|
||||
} else if(median < 1000000.0) {
|
||||
} else if(freqBase < 1000000.0) {
|
||||
m_unitStr = QObject::tr("kHz");
|
||||
m_scale = 1000.0;
|
||||
} else if(median < 1000000000.0) {
|
||||
} else if(freqBase < 1000000000.0) {
|
||||
m_unitStr = QObject::tr("MHz");
|
||||
m_scale = 1000000.0;
|
||||
} else if(median < 1000000000000.0){
|
||||
} else if(freqBase < 1000000000000.0){
|
||||
m_unitStr = QObject::tr("GHz");
|
||||
m_scale = 1000000000.0;
|
||||
} else {
|
||||
|
|
|
|||
Loading…
Reference in New Issue