mmsinputthread.cpp

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/***************************************************************************
 *   Copyright (C) 2005-2007 Stefan Schwarzer, Jens Schneider,             *
 *                           Matthias Hardt, Guido Madaus                  *
 *                                                                         *
 *   Copyright (C) 2007-2008 BerLinux Solutions GbR                        *
 *                           Stefan Schwarzer & Guido Madaus               *
 *                                                                         *
 *   Copyright (C) 2009-2012 BerLinux Solutions GmbH                       *
 *                                                                         *
 *   Authors:                                                              *
 *      Stefan Schwarzer   <stefan.schwarzer@diskohq.org>,                 *
 *      Matthias Hardt     <matthias.hardt@diskohq.org>,                   *
 *      Jens Schneider     <jens.schneider@diskohq.org>,                   *
 *      Guido Madaus       <guido.madaus@diskohq.org>,                     *
 *      Patrick Helterhoff <patrick.helterhoff@diskohq.org>,               *
 *      René Bählkow       <rene.baehlkow@diskohq.org>                     *
 *                                                                         *
 *   This library is free software; you can redistribute it and/or         *
 *   modify it under the terms of the GNU Lesser General Public            *
 *   License version 2.1 as published by the Free Software Foundation.     *
 *                                                                         *
 *   This library is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU     *
 *   Lesser General Public License for more details.                       *
 *                                                                         *
 *   You should have received a copy of the GNU Lesser General Public      *
 *   License along with this library; if not, write to the                 *
 *   Free Software Foundation, Inc.,                                       *
 *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
 **************************************************************************/

#include "mmsinput/mmsinputthread.h"
#include "mmsinput/mmsinputdfbhandler.h"
#include "mmsinput/mmsinputx11handler.h"
#include "mmsinput/mmsinputlishandler.h"
#include "mmsgui/fb/mmsfb.h"

extern MMSFB *mmsfb;


MMSInputThread::MMSInputThread(class MMSInputManager *manager, MMS_INPUT_DEVICE device, int inputinterval) {
    this->manager = manager;
    this->handler = NULL;
    this->device = device;
    this->inputinterval = inputinterval;
}

MMSInputThread::~MMSInputThread() {
    delete handler;
}

void MMSInputThread::threadMain() {
    MMSInputEvent           event, lastevent;
    time_t                  aclock;
    struct timeval          tv;
    double                  currtime, lasttime = 0;
    int                     lkcnt = 0, skip = 0;

    lastevent.type = MMSINPUTEVENTTYPE_NONE;

    if (this->handler == NULL) {
        if (mmsfb->getBackend()==MMSFB_BE_DFB) {
            this->handler = new MMSInputDFBHandler(this->device);
        }
        else
        if (mmsfb->getBackend()==MMSFB_BE_FBDEV) {
            this->handler = new MMSInputLISHandler(this->device);
        }
        else
        if (mmsfb->getBackend()==MMSFB_BE_X11) {
            this->handler = new MMSInputX11Handler(this->device);
        }


/*      if(config->getOutputType()!= MMS_OT_X11FB) {
            //create dfb input backend
            this->handler = new MMSInputDFBHandler(this->device);
        } else {
            #ifdef __HAVE_XLIB__
                if(mmsfb->getBackend()==MMSFB_BACKEND_X11) {
                    this->handler = new MMSInputX11Handler(this->device);
                } else {
                    //allthough we have xlib directfb is used;
                    this->handler = new MMSInputDFBHandler(this->device);
                }
            #else
                //we have no xlib so its dfb x11
                this->handler = new MMSInputDFBHandler(this->device);
            #endif
        }
*/
    }

    while (1) {
        this->handler->grabEvents(&event);

        if (event.type == MMSINPUTEVENTTYPE_KEYPRESS) {
            if (this->inputinterval > 0) {
                /* here we stop to fast input devices */

                /* get time in milliseconds */
                time(&aclock);
                gettimeofday(&tv, NULL);
                currtime = ((double) aclock) * 1000 + ((double) tv.tv_usec) / 1000;

                if (event.key == lastevent.key) {
                    /* check if input comes slow enough */
                    if (currtime < lasttime + ((!skip)?this->inputinterval:(this->inputinterval/2))) {
                        /* to fast, ignore the input */
                        lkcnt++;
                        continue;
                    }
                }
                else
                    lkcnt = 0;

                /* save the last event */
                lastevent = event;

                /* check if the last input is to old */
                skip=0;
                if (lkcnt > 0) {
                    if (currtime > lasttime + this->inputinterval*2)
                        /* to old */
                        lkcnt = 0;
                    else
                        /* the next loop we want the input faster */
                        skip = 1;
                }

                /* save current time */
                lasttime = currtime;
            }
        }

        /* to the input manager */
        this->manager->handleInput(&event);

        /* call garbage handler */
        callGarbageHandler();
    }
}

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