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https://github.com/f4exb/sdrangel.git
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334 lines
8.4 KiB
C++
334 lines
8.4 KiB
C++
#include "dsp/scopevis.h"
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#include "gui/glscope.h"
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#include "dsp/dspcommands.h"
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#include "util/messagequeue.h"
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#include <algorithm>
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#include <QDebug>
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MESSAGE_CLASS_DEFINITION(ScopeVis::MsgConfigureScopeVis, Message)
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const uint ScopeVis::m_traceChunkSize = 4800;
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ScopeVis::ScopeVis(GLScope* glScope) :
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m_glScope(glScope),
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m_tracebackCount(0),
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m_fill(0),
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m_triggerState(Untriggered),
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m_triggerChannel(TriggerFreeRun),
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m_triggerLevel(0.0),
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m_triggerPositiveEdge(true),
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m_triggerBothEdges(false),
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m_triggerPre(0),
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m_triggerDelay(0),
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m_triggerDelayCount(0),
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m_triggerOneShot(false),
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m_armed(false),
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m_sampleRate(0)
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{
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setObjectName("ScopeVis");
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m_trace.reserve(100*m_traceChunkSize);
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m_trace.resize(20*m_traceChunkSize);
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m_traceback.resize(20*m_traceChunkSize);
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}
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ScopeVis::~ScopeVis()
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{
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}
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void ScopeVis::configure(MessageQueue* msgQueue,
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TriggerChannel triggerChannel,
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Real triggerLevel,
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bool triggerPositiveEdge,
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bool triggerBothEdges,
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uint triggerPre,
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uint triggerDelay,
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uint traceSize)
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{
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Message* cmd = MsgConfigureScopeVis::create(triggerChannel,
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triggerLevel,
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triggerPositiveEdge,
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triggerBothEdges,
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triggerPre,
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triggerDelay,
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traceSize);
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msgQueue->push(cmd);
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}
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void ScopeVis::feed(const SampleVector::const_iterator& cbegin, const SampleVector::const_iterator& end, bool positiveOnly)
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{
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SampleVector::const_iterator begin(cbegin);
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if (m_triggerChannel == TriggerFreeRun) {
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m_triggerPoint = begin;
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}
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else if (m_triggerState == Triggered) {
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m_triggerPoint = begin;
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}
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else if (m_triggerState == Untriggered) {
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m_triggerPoint = end;
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}
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else if (m_triggerState == WaitForReset) {
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m_triggerPoint = end;
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}
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else {
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m_triggerPoint = begin;
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}
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while(begin < end)
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{
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if (m_triggerChannel == TriggerFreeRun)
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{
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int count = end - begin;
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if(count > (int)(m_trace.size() - m_fill))
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{
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count = m_trace.size() - m_fill;
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}
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std::vector<Complex>::iterator it = m_trace.begin() + m_fill;
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for(int i = 0; i < count; ++i)
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{
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*it++ = Complex(begin->real() / 32768.0f, begin->imag() / 32768.0f);
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++begin;
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}
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m_fill += count;
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if(m_fill >= m_trace.size())
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{
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m_glScope->newTrace(m_trace, m_sampleRate);
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m_fill = 0;
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}
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}
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else
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{
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if(m_triggerState == WaitForReset)
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{
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break;
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}
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if(m_triggerState == Config)
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{
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m_glScope->newTrace(m_trace, m_sampleRate); // send a dummy trace
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m_triggerState = Untriggered;
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}
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if(m_triggerState == Delay)
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{
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int count = end - begin;
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if (count > (int)(m_trace.size() - m_fill))
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{
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count = m_trace.size() - m_fill;
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}
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begin += count;
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m_fill += count;
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if(m_fill >= m_trace.size())
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{
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m_fill = 0;
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m_triggerDelayCount--;
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if (m_triggerDelayCount == 0)
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{
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m_triggerState = Triggered;
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}
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}
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}
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if(m_triggerState == Untriggered)
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{
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while(begin < end)
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{
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bool triggerCdt = triggerCondition(begin);
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if (m_tracebackCount > m_triggerPre)
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{
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bool trigger;
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if (m_triggerBothEdges) {
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trigger = m_prevTrigger ^ triggerCdt;
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} else {
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trigger = triggerCdt ^ !m_triggerPositiveEdge;
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}
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if (trigger)
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{
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if (m_armed)
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{
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m_armed = false;
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if (m_triggerDelay > 0)
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{
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m_triggerDelayCount = m_triggerDelay;
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m_fill = 0;
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m_triggerState = Delay;
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}
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else
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{
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m_triggerState = Triggered;
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m_triggerPoint = begin;
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// fill beginning of m_trace with delayed samples from the trace memory FIFO. Increment m_fill accordingly.
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if (m_triggerPre) { // do this process only if there is a pre-trigger delay
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std::copy(m_traceback.end() - m_triggerPre - 1, m_traceback.end() - 1, m_trace.begin());
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m_fill = m_triggerPre; // Increment m_fill accordingly (from 0).
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}
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}
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break;
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}
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}
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else
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{
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m_armed = true;
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}
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}
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m_prevTrigger = triggerCdt;
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++begin;
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}
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}
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if(m_triggerState == Triggered)
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{
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int count = end - begin;
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if(count > (int)(m_trace.size() - m_fill))
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{
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count = m_trace.size() - m_fill;
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}
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std::vector<Complex>::iterator it = m_trace.begin() + m_fill;
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for(int i = 0; i < count; ++i)
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{
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*it++ = Complex(begin->real() / 32768.0f, begin->imag() / 32768.0f);
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++begin;
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}
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m_fill += count;
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if(m_fill >= m_trace.size())
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{
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m_glScope->newTrace(m_trace, m_sampleRate);
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m_fill = 0;
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if (m_triggerOneShot) {
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m_triggerState = WaitForReset;
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} else {
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m_tracebackCount = 0;
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m_triggerState = Untriggered;
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}
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}
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}
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}
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}
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}
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void ScopeVis::start()
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{
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}
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void ScopeVis::stop()
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{
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}
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bool ScopeVis::handleMessage(const Message& message)
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{
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qDebug() << "ScopeVis::handleMessage";
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if (DSPSignalNotification::match(message))
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{
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DSPSignalNotification& notif = (DSPSignalNotification&) message;
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m_sampleRate = notif.getSampleRate();
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qDebug() << " - DSPSignalNotification: m_sampleRate: " << m_sampleRate;
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return true;
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}
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else if (MsgConfigureScopeVis::match(message))
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{
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MsgConfigureScopeVis& conf = (MsgConfigureScopeVis&) message;
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m_tracebackCount = 0;
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m_triggerState = Config;
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m_triggerChannel = (TriggerChannel) conf.getTriggerChannel();
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m_triggerLevel = conf.getTriggerLevel();
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m_triggerPositiveEdge = conf.getTriggerPositiveEdge();
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m_triggerBothEdges = conf.getTriggerBothEdges();
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m_triggerPre = conf.getTriggerPre();
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if (m_triggerPre >= m_traceback.size())
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{
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m_triggerPre = m_traceback.size() - 1; // top sample in FIFO is always the triggering one (pre-trigger delay = 0)
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}
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m_triggerDelay = conf.getTriggerDelay();
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uint newSize = conf.getTraceSize();
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if (newSize != m_trace.size())
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{
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m_trace.resize(newSize);
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}
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if (newSize > m_traceback.size()) // fitting the exact required space is not a requirement for the back trace
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{
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m_traceback.resize(newSize);
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}
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qDebug() << " - MsgConfigureScopeVis:"
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<< " m_triggerChannel: " << m_triggerChannel
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<< " m_triggerLevel: " << m_triggerLevel
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<< " m_triggerPositiveEdge: " << (m_triggerPositiveEdge ? "edge+" : "edge-")
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<< " m_triggerBothEdges: " << (m_triggerBothEdges ? "yes" : "no")
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<< " m_preTrigger: " << m_triggerPre
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<< " m_triggerDelay: " << m_triggerDelay
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<< " m_traceSize: " << m_trace.size();
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return true;
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}
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else
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{
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return false;
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}
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}
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void ScopeVis::setSampleRate(int sampleRate)
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{
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m_sampleRate = sampleRate;
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}
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bool ScopeVis::triggerCondition(SampleVector::const_iterator& it)
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{
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Complex c(it->real()/32768.0f, it->imag()/32768.0f);
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m_traceback.push_back(c); // store into trace memory FIFO
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if (m_tracebackCount < m_traceback.size()) { // increment count up to trace memory size
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m_tracebackCount++;
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}
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if (m_triggerChannel == TriggerChannelI) {
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return c.real() > m_triggerLevel;
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}
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else if (m_triggerChannel == TriggerChannelQ) {
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return c.imag() > m_triggerLevel;
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}
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else if (m_triggerChannel == TriggerMagLin) {
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return abs(c) > m_triggerLevel;
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}
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else if (m_triggerChannel == TriggerMagDb) {
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Real mult = (10.0f / log2f(10.0f));
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Real v = c.real() * c.real() + c.imag() * c.imag();
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return mult * log2f(v) > m_triggerLevel;
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}
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else if (m_triggerChannel == TriggerPhase) {
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return arg(c) / M_PI > m_triggerLevel;
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}
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else {
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return false;
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}
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}
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void ScopeVis::setOneShot(bool oneShot)
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{
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m_triggerOneShot = oneShot;
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if ((m_triggerState == WaitForReset) && !oneShot) {
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m_tracebackCount = 0;
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m_triggerState = Untriggered;
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}
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}
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