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path: root/cesar/maximus/channel/src/ChannelSettings.cpp
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/* Maximus project {{{
 *
 * Copyright (C) 2012 MStar Semiconductor
 *
 * <<<Licence>>>
 *
 * }}} */
/**
 * \file    maximus/channel/src/ChannelSettings.cpp
 * \ingroup maximus_channel
 *
 */

#include "maximus/channel/inc/ChannelSettings.h"

#include "maximus/utils/inc/Error.h"
#include "maximus/utils/inc/Logger.h"

#include "hal/phy/maximus/inc/maximus_defs.h" // for 'MAXIMUS_PHY_FC_RECEPTION_DELAY_TCK'

#include <cstring> // memset


ChannelSettings::ChannelSettings ( ):
    mIsConfigured(false),
    mPreDetectionDate(0),
    mFcReceptionDate(0)
{
    initAttributes();
}


void ChannelSettings::initAttributes ( )
{
    logFunction();

    // Init SNR array
    memset(mSnrArray, '\0', MAXIMUS_CHANNEL_INTERVAL_MAX_NB * (PHY_CARRIER_NB + 1) * sizeof(float));

    // Init tonemap array
    memset(mTonemapArray, '\0', PHY_CARRIER_NB * sizeof(Channel_Mod));
}


ChannelSettings::~ChannelSettings ( )
{
    logFunction();
}

Network_Clock_Tick ChannelSettings::getFirstSymbolStartDate ( ) const
{
    return getFcReceptionDate() - MAXIMUS_PHY_FC_RECEPTION_DELAY_TCK;
}


Channel_Mod ChannelSettings::getModulation ( const unsigned int carrier ) const
{
    return mTonemapArray[carrier];
}


float ChannelSettings::getSnr ( const Network_Clock_Tick beacon_period,
                                const Network_Clock_Tick symbol_start_date,
                                const unsigned int carrier ) const
{
    return mSnrArray[getInterval(beacon_period, symbol_start_date)][carrier + 1];
}

bool ChannelSettings::setIsConfigured ( const bool is_configured )
{
    logFunction();

    mIsConfigured = is_configured;

    return true;
}


Network_Clock_Tick ChannelSettings::getPreDetectionDate ( ) const
{
    return mPreDetectionDate;
}


Network_Clock_Tick ChannelSettings::getFcReceptionDate ( ) const
{
    return mFcReceptionDate;
}


unsigned int ChannelSettings::getInterval ( const Network_Clock_Tick beacon_period,
                                            const Network_Clock_Tick symbol_start_date ) const
{
    unsigned int i;

    for (i=0; i<MAXIMUS_CHANNEL_INTERVAL_MAX_NB-1; i++)
    {
        if ( (symbol_start_date % beacon_period) / 25 < mSnrArray[i][0] )
        {
            break;
        }
    }

    return i;
}

bool ChannelSettings::isConfigured ( ) const
{
    return mIsConfigured;
}


bool ChannelSettings::setSnr ( const float snr_value )
{
    logFunction();

    for (int i=0; i<MAXIMUS_CHANNEL_INTERVAL_MAX_NB; i++)
    {
        mSnrArray[i][0] = 0; // interval
        for (int j=1; j<=PHY_CARRIER_NB; j++)
        {
            mSnrArray[i][j] = snr_value;
        }
    }

    return setIsConfigured();
}


bool ChannelSettings::setSnr ( const float snr_values[MAXIMUS_CHANNEL_INTERVAL_MAX_NB][PHY_CARRIER_NB + 1] )
{
    logFunction();

    for (int i=0; i<MAXIMUS_CHANNEL_INTERVAL_MAX_NB; i++)
    {
        for (int j=0; j<=PHY_CARRIER_NB; j++)
        {
            mSnrArray[i][j] = snr_values[i][j];
        }
    }

    return setIsConfigured();
}


bool ChannelSettings::setTonemap ( const Channel_Mod tonemap_array[PHY_CARRIER_NB + 1] )
{
    for (int i=0; i<PHY_CARRIER_NB; i++)
    {
        mTonemapArray[i] = tonemap_array[i];
    }

    return true;
}


bool ChannelSettings::setPreDetectionDate ( const Network_Clock_Tick date )
{
    mPreDetectionDate = date;

    return true;
}


bool ChannelSettings::setFcReceptionDate ( const Network_Clock_Tick date )
{
    mFcReceptionDate = date;

    return true;
}