hyperion.ng/libsrc/leddevice/dev_serial/LedDeviceDMX.cpp
LordGrey 6fa7bab6f7
Add CodeQL for GitHub code scanning (#1548)
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* Addressing codeql findings
2022-12-27 08:36:10 +01:00

110 lines
2.7 KiB
C++

#include "LedDeviceDMX.h"
#include <QSerialPort>
#ifndef _WIN32
#include <time.h>
#endif
LedDeviceDMX::LedDeviceDMX(const QJsonObject &deviceConfig)
: ProviderRs232(deviceConfig)
, _dmxDeviceType(0)
, _dmxStart(1)
, _dmxSlotsPerLed(3)
, _dmxLedCount(0)
, _dmxChannelCount(0)
{
}
LedDevice* LedDeviceDMX::construct(const QJsonObject &deviceConfig)
{
return new LedDeviceDMX(deviceConfig);
}
bool LedDeviceDMX::init(const QJsonObject &deviceConfig)
{
bool isInitOK = false;
// Initialise sub-class
if ( ProviderRs232::init(deviceConfig) )
{
QString dmxTypeString = deviceConfig["dmxtype"].toString("invalid");
if (dmxTypeString == "raw")
{
_dmxDeviceType = 0;
_dmxStart = 1;
_dmxSlotsPerLed = 3;
}
else if (dmxTypeString == "McCrypt")
{
_dmxDeviceType = 1;
_dmxStart = 1;
_dmxSlotsPerLed = 4;
}
else
{
QString errortext = QString ("unknown dmx device type: %1").arg(dmxTypeString);
this->setInError(errortext);
return false;
}
Debug(_log, "_dmxTypeString \"%s\", _dmxDeviceType %d", QSTRING_CSTR(dmxTypeString), _dmxDeviceType );
_rs232Port.setStopBits(QSerialPort::TwoStop);
_dmxLedCount = qMin(static_cast<int>(_ledCount), 512/_dmxSlotsPerLed);
_dmxChannelCount = 1 + _dmxSlotsPerLed * _dmxLedCount;
Debug(_log, "_dmxStart %d, _dmxSlotsPerLed %d", _dmxStart, _dmxSlotsPerLed);
Debug(_log, "_ledCount %d, _dmxLedCount %d, _dmxChannelCount %d", _ledCount, _dmxLedCount, _dmxChannelCount);
_ledBuffer.resize(_dmxChannelCount, 0);
_ledBuffer[0] = 0x00; // NULL START code
isInitOK = true;
}
return isInitOK;
}
int LedDeviceDMX::write(const std::vector<ColorRgb> &ledValues)
{
switch (_dmxDeviceType) {
case 0:
memcpy(_ledBuffer.data()+1, ledValues.data(), _dmxChannelCount-1);
break;
case 1:
int l =_dmxStart;
for (int d=0; d<_dmxLedCount; d++)
{
_ledBuffer[l++] = ledValues[d].red;
_ledBuffer[l++] = ledValues[d].green;
_ledBuffer[l++] = ledValues[d].blue;
_ledBuffer[l++] = 255;
}
break;
}
_rs232Port.setBreakEnabled(true);
// Note Windows: There is no concept of ns sleeptime, the closest possible is 1ms but requested is 0,000176ms
#ifndef _WIN32
nanosleep((const struct timespec[]){{0, 176000L}}, NULL); // 176 uSec break time
#endif
_rs232Port.setBreakEnabled(false);
#ifndef _WIN32
nanosleep((const struct timespec[]){{0, 12000L}}, NULL); // 176 uSec make after break time
#endif
#undef uberdebug
#ifdef uberdebug
printf ("Writing %d bytes", _dmxChannelCount);
for (unsigned int i=0; i < _dmxChannelCount; i++)
{
if (i%32 == 0) {
printf ("\n%04x: ", i);
}
printf ("%02x ", _ledBuffer[i]);
}
printf ("\n");
#endif
return writeBytes(_dmxChannelCount, _ledBuffer.data());
}