hyperion.ng/libsrc/leddevice/LedDeviceRawHID.cpp

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// STL includes
#include <cstring>
#include <cstdio>
#include <iostream>
// Linux includes
#include <fcntl.h>
#include <sys/ioctl.h>
// hyperion local includes
#include "LedDeviceRawHID.h"
// Use feature report HID device
LedDeviceRawHID::LedDeviceRawHID(const unsigned short VendorId, const unsigned short ProductId, int delayAfterConnect_ms) :
LedHIDDevice(VendorId, ProductId, delayAfterConnect_ms, true),
_ledBuffer(0),
_timer()
{
// setup the timer
_timer.setSingleShot(false);
_timer.setInterval(5000);
connect(&_timer, SIGNAL(timeout()), this, SLOT(rewriteLeds()));
// start the timer
_timer.start();
}
int LedDeviceRawHID::write(const std::vector<ColorRgb> & ledValues)
{
// Resize buffer if required
if (_ledBuffer.size() < ledValues.size() * 3) {
_ledBuffer.resize(3 * ledValues.size());
}
// restart the timer
_timer.start();
// write data
memcpy(_ledBuffer.data(), ledValues.data(), ledValues.size() * 3);
return writeBytes(_ledBuffer.size(), _ledBuffer.data());
}
int LedDeviceRawHID::switchOff()
{
// restart the timer
_timer.start();
// write data
std::fill(_ledBuffer.begin(), _ledBuffer.end(), uint8_t(0));
return writeBytes(_ledBuffer.size(), _ledBuffer.data());
}
void LedDeviceRawHID::rewriteLeds()
{
writeBytes(_ledBuffer.size(), _ledBuffer.data());
}