#include "ibacklight.h"
#include <fcntl.h>
#include <unistd.h>
#include <stdio.h>
#include <sys/ioctl.h>
#include <QDebug>
#include <QLoggingCategory>

Q_LOGGING_CATEGORY(flapp,  "app.screen")

Backlight::Backlight(const QString &devname, const QString &screenName, int min, int max)
    :m_devName(devname)
    ,m_screeName(screenName)
    ,m_min(min)
    ,m_max(max)

{
    qCDebug(flapp)<<QString("Backlight devname=%1, screenName=%2, min=%3, max=%4").arg(devname).arg(screenName).arg(min).arg(max);
}

QString Backlight::devName()
{
    return m_devName;
}

QString Backlight::screenName()
{
    return m_screeName;
}

bool Backlight::open()
{
    bool bOpen = false;
    m_fd = ::open(m_devName.toLocal8Bit().constData(), O_RDWR|O_NONBLOCK);
    bOpen = m_fd>0;
    if(!bOpen)
    {
        qCDebug(flapp)<<QString("open %1 falire").arg(m_devName);
    }
    return bOpen;
}

void Backlight::close()
{
    qCDebug(flapp)<<QString("close :").arg(m_devName);
    if(m_fd>0)
        ::close(m_fd);
}

int Backlight::setValue(int v)
{
    int ret =0;
    char buf[10];
    lseek(m_fd, 0, SEEK_SET);
    sprintf(buf,"%d",v);
    ::write(m_fd,buf,sizeof(v));

    return ret;
}

int Backlight::getValue()
{
    char buf[10];
    lseek(m_fd, 0, SEEK_SET);
    ::read(m_fd, buf, sizeof(buf));

    int ret = atoi(buf);

    return ret;
}

void Backlight::getRange(int &min, int &max)
{
    min = m_min;
    max = m_max;
}

enum {
    //#include <disp2/sunxi_display2.h>
    DISP_GET_OUTPUT_TYPE = 0x09,
    DISP_OUTPUT_TYPE_LCD    = 1,
    DISP_LCD_GET_BRIGHTNESS = 0x103,
    DISP_LCD_SET_BRIGHTNESS = 0x102
};
int T507::getValue()
{
    unsigned long args[3];
    int err, i;
    int v;
    for(i = 0; i < 2; i++)
    {
        args[0] = i;
        if(ioctl(m_fd, DISP_GET_OUTPUT_TYPE,args) == DISP_OUTPUT_TYPE_LCD)
        {
            args[1]  = (unsigned long)&v;
            args[2]  = 0;
            err = ioctl(m_fd, DISP_LCD_GET_BRIGHTNESS, args);
            return v;
        }
    }

    return -1;
}

T507::T507(const QString &devname, const QString &screenName, int min, int max)
    :Backlight(devname,screenName,  min, max)
{
    qCDebug(flapp)<<QString("T507 devname=%1, screenName=%2, min=%3, max=%4").arg(devname).arg(screenName).arg(min).arg(max);
}

int T507::setValue(int v)
{
    unsigned long args[3];
    int err, i;
    for(i = 0; i < 2; i++)
    {
        args[0] = i;
        if(ioctl(m_fd, DISP_GET_OUTPUT_TYPE,args) == DISP_OUTPUT_TYPE_LCD)
        {
            args[1]  = v;
            args[2]  = 0;
            err = ioctl(m_fd, DISP_LCD_SET_BRIGHTNESS, args);
            return err;
        }
    }

    return -1;
}