libGizmod/GizmoPowermate.cpp

Go to the documentation of this file.

/*
  
  Copyright (c) 2007, Tim Burrell
  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.
  You may obtain a copy of the License at 

        http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and 
  limitations under the License. 
  
*/

#include "GizmoPowermate.hpp"
#include "GizmoEventPowermate.hpp"
#include "GizmoKeyDefs.hpp"
#include "../libH/Debug.hpp"
#include "../libH/Exception.hpp"
#include "../libH/UtilTime.hpp"
#include <boost/shared_ptr.hpp>
#include <errno.h>

using namespace std;
using namespace boost;
using namespace H;
using namespace Gizmod;

// Type Defs

#define GIZMO_POWERMATE_TYPE    "Powermate"

// Construction

GizmoPowermate::GizmoPowermate(const H::DeviceInfo & deviceInfo, int DeviceID, int DeviceClassID) : Gizmo(GIZMO_CLASS_POWERMATE, deviceInfo, DeviceID, DeviceClassID), GizmoLinuxInputDevice(deviceInfo) {
        mPulseAsleep = true;
        mRotateCurDir = -1;
        mRotateCurTick = 0;
        mRotated = false;
        mRotateTicksPerEvent = 1;
}

GizmoPowermate::GizmoPowermate() {
        mPulseAsleep = true;
        mRotateCurDir = -1;
        mRotateCurTick = 0;
        mRotated = false;
        mRotateTicksPerEvent = 1;
}

GizmoPowermate::~GizmoPowermate() {
}

// Class Body

void GizmoPowermate::changeLEDState(int StaticBrightness, int PulseSpeed, int PulseTable, int PulseAsleep, int PulseAwake) {
        struct input_event ev;
        memset(&ev, 0, sizeof(struct input_event));
        
        StaticBrightness &= 0xFF;

        if (PulseSpeed < 0)
                PulseSpeed = 0;
        else if (PulseSpeed > 510)
                PulseSpeed = 510;
        if (PulseTable < 0)
                PulseTable = 0;
        else if (PulseTable > 2)
                PulseTable = 2;
        PulseAsleep = !!PulseAsleep;
        PulseAwake = !!PulseAwake;

        ev.type = EV_MSC;
        ev.code = MSC_PULSELED;
        ev.value = StaticBrightness | (PulseSpeed << 8) | (PulseTable << 17) | (PulseAsleep << 19) | (PulseAwake << 20);

        if (write(mDeviceInfo.FileDescriptor, &ev, sizeof(struct input_event)) != sizeof(struct input_event))
                cdbg << "Failed to Write to Griffin PowerMate [" << strerror(errno) << "]" << endl;
}

unsigned char GizmoPowermate::getLED() {
        return mLevel;
}

float GizmoPowermate::getLEDPercent() {
        return ((float) mLevel / 255.0f) * 100.0f;
}

bool GizmoPowermate::getLEDPulseAsleep() {
        return mPulseAsleep;
} 

std::string GizmoPowermate::getType() {
        return GIZMO_POWERMATE_TYPE;
}

bool GizmoPowermate::getRotated() {
        return mRotated;
}

bool GizmoPowermate::processEvent(GizmoEvent * pEvent) {
        if (!GizmoLinuxInputDevice::processEvent())
                return false;
        
        GizmoEventPowermate * pPowermateEvent = static_cast<GizmoEventPowermate *>(pEvent);
        
        switch (pPowermateEvent->Type) {
        case EV_REL:
                mRotateCurTick ++;
                if ( (mRotateCurTick < mRotateTicksPerEvent) && (mRotateCurDir == pPowermateEvent->Value) )
                        return false;
                mRotateCurDir = pPowermateEvent->Value;
                mRotateCurTick = 0;
                mRotated = true;
                break;
        case EV_KEY:
                if (pPowermateEvent->Value)
                        mClickTimer = UtilTime::getTicks();
                else
                        pPowermateEvent->ClickTime = float(UtilTime::getTicks() - mClickTimer) / 1000000.0f;
                setKeyState(pPowermateEvent->Code, pPowermateEvent->Value);
                if (pPowermateEvent->Value)
                        mRotated = false;
                break;
        default:
                // do nothing
                break;
        }
        
        return true;
}

void GizmoPowermate::pulseLED(int Level, int PulseSpeed, int PulseTable) {
        changeLEDState(Level, PulseSpeed, PulseTable, 1, 1);
        cdbg2 << "Pulsing LED [Speed " << PulseSpeed << " @ Table " << PulseTable << "]" << endl;
}

void GizmoPowermate::setLED(unsigned char Level) {
        if (Level == mLevel)
                return;
        changeLEDState((int) Level, 255, 0, mPulseAsleep, 0);
        mLevel = Level;
}

void GizmoPowermate::setLEDPercent(float Percent) {
        if (Percent < 0.0f)
                Percent = 0.0f;
        else if (Percent > 100.0f)
                Percent = 100.0f;
        unsigned char Level = (unsigned char) (255.0f * (Percent / 100.0f));
        if (Level == mLevel)
                return;
        setLED(Level);
}

void GizmoPowermate::setLEDPulseAsleep(bool Enabled) {
        mPulseAsleep = Enabled;
} 

void GizmoPowermate::setRotateSensitivity(int TicksPerEvent) {
        mRotateTicksPerEvent = TicksPerEvent;
        cdbg << "Powermate Rotate Sensitivity set to " << TicksPerEvent << " Ticks per Generated Event" << endl;
}

---