/*
 * Copyright 2004-2008, François Revol, <revol@free.fr>.
 * Distributed under the terms of the MIT License.
 */

#include "CamSensor.h"
#include "CamDebug.h"


CamSensor::CamSensor(CamDevice *_camera)
        : fInitStatus(B_NO_INIT),
          fIsBigEndian(false),
          fTransferEnabled(false),
          fVideoFrame(),
          fLastParameterChanges(0),
          fCamDevice(_camera)
{

}


CamSensor::~CamSensor()
{

}


status_t
CamSensor::Probe()
{
        // default is to match by USB IDs
        return B_OK;
}


status_t
CamSensor::InitCheck()
{
        return fInitStatus;
}


status_t
CamSensor::Setup()
{
        return fInitStatus;
}


const char *
CamSensor::Name()
{
        return "<unknown>";
}


status_t
CamSensor::StartTransfer()
{
        fTransferEnabled = true;
        return B_OK;
}


status_t
CamSensor::StopTransfer()
{
        fTransferEnabled = false;
        return B_OK;
}


status_t
CamSensor::AcceptVideoFrame(uint32 &width, uint32 &height)
{
        // minimum sanity
        if (width < 1)
                width = MaxWidth();
        if (height < 1)
                height = MaxHeight();
        if (width > (uint32)MaxWidth())
                width = MaxWidth();
        if (height > (uint32)MaxHeight())
                height = MaxHeight();
        return B_OK;
}


status_t
CamSensor::SetVideoFrame(BRect rect)
{
        return ENOSYS;
}


status_t
CamSensor::SetVideoParams(float brightness, float contrast, float hue, float red, float green, float blue)
{
        return ENOSYS;
}


void
CamSensor::AddParameters(BParameterGroup *group, int32 &index)
{
        fFirstParameterID = index;
}

status_t
CamSensor::GetParameterValue(int32 id, bigtime_t *last_change, void *value, size_t *size)
{
        return B_BAD_VALUE;
}

status_t
CamSensor::SetParameterValue(int32 id, bigtime_t when, const void *value, size_t size)
{
        return B_BAD_VALUE;
}


CamDevice *
CamSensor::Device()
{
        return fCamDevice;
}


status_t
CamSensor::ProbeByIICSignature(const uint8 *regList, const uint8 *matchList,
        size_t count)
{
        for (size_t i = 0; i < count; i++) {
                uint8 value = 0;
                ssize_t len;
                len = Device()->ReadIIC8(regList[i], &value);
                PRINT((CH ": ReadIIC8 = %" B_PRIdSSIZE " val = %d" CT, len, value));
                if (len < 1)
                        return ENODEV;
                if (value != matchList[i])
                        return ENODEV;
        }
        return B_OK;
}