///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2012 maintech GmbH, Otto-Hahn-Str. 15, 97204 Hoechberg, Germany //
// written by Christian Daniel                                                   //
//                                                                               //
// This program is free software; you can redistribute it and/or modify          //
// it under the terms of the GNU General Public License as published by          //
// the Free Software Foundation as version 3 of the License, or                  //
//                                                                               //
// This program 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 General Public License V3 for more details.                               //
//                                                                               //
// You should have received a copy of the GNU General Public License             //
// along with this program. If not, see <http://www.gnu.org/licenses/>.          //
///////////////////////////////////////////////////////////////////////////////////

// FIXME: FCD is handled very badly!

#include <QDebug>
#include <string.h>
#include <errno.h>
#include "dsp/dspcommands.h"
#include "dsp/dspengine.h"
#include "fcdproinput.h"

#include "fcdprogui.h"
#include "fcdproserializer.h"
#include "fcdprothread.h"
#include "fcdtraits.h"
#include "fcdproconst.h"

MESSAGE_CLASS_DEFINITION(FCDProInput::MsgConfigureFCD, Message)

FCDProInput::Settings::Settings()
{
	resetToDefaults();
}

void FCDProInput::Settings::resetToDefaults()
{
	centerFrequency = 435000000;
	LOppmTenths = 0;
	lnaGainIndex = 0;
	rfFilterIndex = 0;
	lnaEnhanceIndex = 0;
	bandIndex = 0;
	mixerGainIndex = 0;
	mixerFilterIndex = 0;
	biasCurrentIndex = 0;
	modeIndex = 0;
	gain1Index = 0;
	rcFilterIndex = 0;
	gain2Index = 0;
	gain3Index = 0;
	gain4Index = 0;
	ifFilterIndex = 0;
	gain5Index = 0;
	gain6Index = 0;
}

QByteArray FCDProInput::Settings::serialize() const
{
	FCDProSerializer::FCDData data;

	data.m_data.m_frequency = centerFrequency;
	data.m_LOppmTenths = LOppmTenths;
	data.m_lnaGainIndex = lnaGainIndex;
	data.m_rfFilterIndex = rfFilterIndex;
	data.m_lnaEnhanceIndex = lnaEnhanceIndex;
	data.m_bandIndex = bandIndex;
	data.m_mixerGainIndex = mixerGainIndex;
	data.m_mixerFilterIndex = mixerFilterIndex;
	data.m_biasCurrentIndex = biasCurrentIndex;
	data.m_modeIndex = modeIndex;
	data.m_gain1Index = gain1Index;
	data.m_rcFilterIndex = rcFilterIndex;
	data.m_gain2Index = gain2Index;
	data.m_gain3Index = gain3Index;
	data.m_gain4Index = gain4Index;
	data.m_ifFilterIndex = ifFilterIndex;
	data.m_gain5Index = gain5Index;
	data.m_gain6Index = gain6Index;

	QByteArray byteArray;

	FCDProSerializer::writeSerializedData(data, byteArray);

	return byteArray;
}

bool FCDProInput::Settings::deserialize(const QByteArray& serializedData)
{
	FCDProSerializer::FCDData data;

	bool valid = FCDProSerializer::readSerializedData(serializedData, data);

	centerFrequency = data.m_data.m_frequency;
	LOppmTenths = data.m_LOppmTenths;
	lnaGainIndex = data.m_lnaGainIndex;
	rfFilterIndex = data.m_rfFilterIndex;
	lnaEnhanceIndex = data.m_lnaEnhanceIndex;
	bandIndex = data.m_bandIndex;
	mixerGainIndex = data.m_mixerGainIndex;
	mixerFilterIndex = data.m_mixerFilterIndex;
	biasCurrentIndex = data.m_biasCurrentIndex;
	modeIndex = data.m_modeIndex;
	gain1Index = data.m_gain1Index;
	rcFilterIndex = data.m_rcFilterIndex;
	gain2Index = data.m_gain2Index;
	gain3Index = data.m_gain3Index;
	gain4Index = data.m_gain4Index;
	ifFilterIndex = data.m_ifFilterIndex;
	gain5Index = data.m_gain5Index;
	gain6Index = data.m_gain6Index;

	return valid;
}

FCDProInput::FCDProInput() :
	m_dev(0),
	m_settings(),
	m_FCDThread(0),
	m_deviceDescription(fcd_traits<Pro>::displayedName)
{
}

FCDProInput::~FCDProInput()
{
	stop();
}

bool FCDProInput::init(const Message& cmd)
{
	return false;
}

bool FCDProInput::start(int device)
{
	qDebug() << "FCDProInput::start with device #" << device;

	QMutexLocker mutexLocker(&m_mutex);

	if (m_FCDThread)
	{
		return false;
	}

	m_dev = fcdOpen(fcd_traits<Pro>::vendorId, fcd_traits<Pro>::productId, device);

	if (m_dev == 0)
	{
		qCritical("FCDProInput::start: could not open FCD");
		return false;
	}

	/* Apply settings before streaming to avoid bus contention;
	 * there is very little spare bandwidth on a full speed USB device.
	 * Failure is harmless if no device is found
	 * ... This is rubbish...*/

	//applySettings(m_settings, true);

	if(!m_sampleFifo.setSize(96000*4))
	{
		qCritical("Could not allocate SampleFifo");
		return false;
	}

	if ((m_FCDThread = new FCDProThread(&m_sampleFifo)) == NULL)
	{
		qFatal("out of memory");
		return false;
	}

	m_FCDThread->startWork();

	mutexLocker.unlock();
	applySettings(m_settings, true);

	qDebug("FCDProInput::started");
	return true;
}

void FCDProInput::stop()
{
	QMutexLocker mutexLocker(&m_mutex);

	if (m_FCDThread)
	{
		m_FCDThread->stopWork();
		// wait for thread to quit ?
		delete m_FCDThread;
		m_FCDThread = 0;
	}

	fcdClose(m_dev);
	m_dev = 0;
}

const QString& FCDProInput::getDeviceDescription() const
{
	return m_deviceDescription;
}

int FCDProInput::getSampleRate() const
{
	return fcd_traits<Pro>::sampleRate;
}

quint64 FCDProInput::getCenterFrequency() const
{
	return m_settings.centerFrequency;
}

bool FCDProInput::handleMessage(const Message& message)
{
	if(MsgConfigureFCD::match(message))
	{
		qDebug() << "FCDProInput::handleMessage: MsgConfigureFCD";
		MsgConfigureFCD& conf = (MsgConfigureFCD&) message;
		applySettings(conf.getSettings(), false);
		return true;
	}
	else
	{
		return false;
	}
}

void FCDProInput::applySettings(const Settings& settings, bool force)
{
	bool signalChange = false;

	if ((m_settings.centerFrequency != settings.centerFrequency) || force)
	{
		qDebug() << "FCDProInput::applySettings: fc: " << settings.centerFrequency;
		m_settings.centerFrequency = settings.centerFrequency;

		if (m_dev != 0)
		{
			set_center_freq((double) m_settings.centerFrequency);
		}

		signalChange = true;
	}

	if ((m_settings.lnaGainIndex != settings.lnaGainIndex) || force)
	{
		m_settings.lnaGainIndex = settings.lnaGainIndex;

		if (m_dev != 0)
		{
			set_lnaGain(settings.lnaGainIndex);
		}
	}

	if ((m_settings.rfFilterIndex != settings.rfFilterIndex) || force)
	{
		m_settings.rfFilterIndex = settings.rfFilterIndex;

		if (m_dev != 0)
		{
			set_rfFilter(settings.rfFilterIndex);
		}
	}

	if ((m_settings.lnaEnhanceIndex != settings.lnaEnhanceIndex) || force)
	{
		m_settings.lnaEnhanceIndex = settings.lnaEnhanceIndex;

		if (m_dev != 0)
		{
			set_lnaEnhance(settings.lnaEnhanceIndex);
		}
	}

	if ((m_settings.bandIndex != settings.bandIndex) || force)
	{
		m_settings.bandIndex = settings.bandIndex;

		if (m_dev != 0)
		{
			set_band(settings.bandIndex);
		}
	}

	if ((m_settings.mixerGainIndex != settings.mixerGainIndex) || force)
	{
		m_settings.mixerGainIndex = settings.mixerGainIndex;

		if (m_dev != 0)
		{
			set_mixerGain(settings.mixerGainIndex);
		}
	}

	if ((m_settings.mixerFilterIndex != settings.mixerFilterIndex) || force)
	{
		m_settings.mixerFilterIndex = settings.mixerFilterIndex;

		if (m_dev != 0)
		{
			set_mixerFilter(settings.mixerFilterIndex);
		}
	}

	if ((m_settings.biasCurrentIndex != settings.biasCurrentIndex) || force)
	{
		m_settings.biasCurrentIndex = settings.biasCurrentIndex;

		if (m_dev != 0)
		{
			set_biasCurrent(settings.biasCurrentIndex);
		}
	}

	if ((m_settings.modeIndex != settings.modeIndex) || force)
	{
		m_settings.modeIndex = settings.modeIndex;

		if (m_dev != 0)
		{
			set_mode(settings.modeIndex);
		}
	}

	if ((m_settings.gain1Index != settings.gain1Index) || force)
	{
		m_settings.gain1Index = settings.gain1Index;

		if (m_dev != 0)
		{
			set_gain1(settings.gain1Index);
		}
	}

	if ((m_settings.rcFilterIndex != settings.rcFilterIndex) || force)
	{
		m_settings.rcFilterIndex = settings.rcFilterIndex;

		if (m_dev != 0)
		{
			set_rcFilter(settings.rcFilterIndex);
		}
	}

	if ((m_settings.gain2Index != settings.gain2Index) || force)
	{
		m_settings.gain2Index = settings.gain2Index;

		if (m_dev != 0)
		{
			set_gain2(settings.gain2Index);
		}
	}

	if ((m_settings.gain3Index != settings.gain3Index) || force)
	{
		m_settings.gain3Index = settings.gain3Index;

		if (m_dev != 0)
		{
			set_gain3(settings.gain3Index);
		}
	}

	if ((m_settings.gain4Index != settings.gain4Index) || force)
	{
		m_settings.gain4Index = settings.gain4Index;

		if (m_dev != 0)
		{
			set_gain4(settings.gain4Index);
		}
	}

	if ((m_settings.ifFilterIndex != settings.ifFilterIndex) || force)
	{
		m_settings.ifFilterIndex = settings.ifFilterIndex;

		if (m_dev != 0)
		{
			set_ifFilter(settings.ifFilterIndex);
		}
	}

	if ((m_settings.gain5Index != settings.gain5Index) || force)
	{
		m_settings.gain5Index = settings.gain5Index;

		if (m_dev != 0)
		{
			set_gain5(settings.gain5Index);
		}
	}

	if ((m_settings.gain6Index != settings.gain6Index) || force)
	{
		m_settings.gain6Index = settings.gain6Index;

		if (m_dev != 0)
		{
			set_gain6(settings.gain6Index);
		}
	}

	if ((m_settings.LOppmTenths != settings.LOppmTenths) || force)
	{
		m_settings.LOppmTenths = settings.LOppmTenths;

		if (m_dev != 0)
		{
			set_lo_ppm();
		}
	}

    if (signalChange)
    {
		DSPSignalNotification *notif = new DSPSignalNotification(fcd_traits<Pro>::sampleRate, m_settings.centerFrequency);
		DSPEngine::instance()->getInputMessageQueue()->push(notif);
    }
}

void FCDProInput::set_center_freq(double freq)
{
	freq += freq*(((double) m_settings.LOppmTenths)/10000000.0);

	if (fcdAppSetFreq(m_dev, freq) == FCD_MODE_NONE)
	{
		qDebug("No FCD HID found for frquency change");
	}

}

void FCDProInput::set_bias_t(bool on)
{
	quint8 cmd = on ? 1 : 0;

	// TODO: use FCD Pro controls
	//fcdAppSetParam(m_dev, FCD_CMD_APP_SET_BIAS_TEE, &cmd, 1);
}

void FCDProInput::set_lnaGain(int index)
{
	if ((index < 0) || (index >= FCDProConstants::fcdpro_lna_gain_nb_values()))
	{
		return;
	}

	quint8 cmd_value = FCDProConstants::lna_gains[index].value;

	if (fcdAppSetParam(m_dev, FCDPRO_HID_CMD_SET_LNA_GAIN, &cmd_value, 1) != FCD_MODE_APP)
	{
		qWarning() << "FCDProPlusInput::set_lnaGain: failed to set at " << cmd_value;
	}
}

void FCDProInput::set_rfFilter(int index)
{
	if ((index < 0) || (index >= FCDProConstants::fcdpro_rf_filter_nb_values()))
	{
		return;
	}

	quint8 cmd_value = FCDProConstants::rf_filters[index].value;

	if (fcdAppSetParam(m_dev, FCDPRO_HID_CMD_SET_RF_FILTER, &cmd_value, 1) != FCD_MODE_APP)
	{
		qWarning() << "FCDProPlusInput::set_rfFilter: failed to set at " << cmd_value;
	}
}

void FCDProInput::set_lnaEnhance(int index)
{
	if ((index < 0) || (index >= FCDProConstants::fcdpro_lna_enhance_nb_values()))
	{
		return;
	}

	quint8 cmd_value = FCDProConstants::lna_enhances[index].value;

	if (fcdAppSetParam(m_dev, FCDPRO_HID_CMD_SET_LNA_ENHANCE, &cmd_value, 1) != FCD_MODE_APP)
	{
		qWarning() << "FCDProPlusInput::set_lnaEnhance: failed to set at " << cmd_value;
	}
}

void FCDProInput::set_band(int index)
{
	if ((index < 0) || (index >= FCDProConstants::fcdpro_band_nb_values()))
	{
		return;
	}

	quint8 cmd_value = FCDProConstants::bands[index].value;

	if (fcdAppSetParam(m_dev, FCDPRO_HID_CMD_SET_BAND, &cmd_value, 1) != FCD_MODE_APP)
	{
		qWarning() << "FCDProPlusInput::set_band: failed to set at " << cmd_value;
	}
}

void FCDProInput::set_mixerGain(int index)
{
	if ((index < 0) || (index >= FCDProConstants::fcdpro_mixer_gain_nb_values()))
	{
		return;
	}

	quint8 cmd_value = FCDProConstants::mixer_gains[index].value;

	if (fcdAppSetParam(m_dev, FCDPRO_HID_CMD_SET_MIXER_GAIN, &cmd_value, 1) != FCD_MODE_APP)
	{
		qWarning() << "FCDProPlusInput::set_mixerGain: failed to set at " << cmd_value;
	}
}

void FCDProInput::set_mixerFilter(int index)
{
	if ((index < 0) || (index >= FCDProConstants::fcdpro_mixer_filter_nb_values()))
	{
		return;
	}

	quint8 cmd_value = FCDProConstants::mixer_filters[index].value;

	if (fcdAppSetParam(m_dev, FCDPRO_HID_CMD_SET_MIXER_FILTER, &cmd_value, 1) != FCD_MODE_APP)
	{
		qWarning() << "FCDProPlusInput::set_mixerFilter: failed to set at " << cmd_value;
	}
}

void FCDProInput::set_biasCurrent(int index)
{
	if ((index < 0) || (index >= FCDProConstants::fcdpro_bias_current_nb_values()))
	{
		return;
	}

	quint8 cmd_value = FCDProConstants::bias_currents[index].value;

	if (fcdAppSetParam(m_dev, FCDPRO_HID_CMD_SET_BIAS_CURRENT, &cmd_value, 1) != FCD_MODE_APP)
	{
		qWarning() << "FCDProPlusInput::set_biasCurrent: failed to set at " << cmd_value;
	}
}

void FCDProInput::set_mode(int index)
{
	if ((index < 0) || (index >= FCDProConstants::fcdpro_if_gain_mode_nb_values()))
	{
		return;
	}

	quint8 cmd_value = FCDProConstants::if_gain_modes[index].value;

	if (fcdAppSetParam(m_dev, FCDPRO_HID_CMD_SET_IF_GAIN_MODE, &cmd_value, 1) != FCD_MODE_APP)
	{
		qWarning() << "FCDProPlusInput::set_mode: failed to set at " << cmd_value;
	}
}

void FCDProInput::set_gain1(int index)
{
	if ((index < 0) || (index >= FCDProConstants::fcdpro_if_gain1_nb_values()))
	{
		return;
	}

	quint8 cmd_value = FCDProConstants::if_gains1[index].value;

	if (fcdAppSetParam(m_dev, FCDPRO_HID_CMD_SET_IF_GAIN1, &cmd_value, 1) != FCD_MODE_APP)
	{
		qWarning() << "FCDProPlusInput::set_gain1: failed to set at " << cmd_value;
	}
}

void FCDProInput::set_rcFilter(int index)
{
	if ((index < 0) || (index >= FCDProConstants::fcdpro_if_rc_filter_nb_values()))
	{
		return;
	}

	quint8 cmd_value = FCDProConstants::if_rc_filters[index].value;

	if (fcdAppSetParam(m_dev, FCDPRO_HID_CMD_SET_IF_RC_FILTER, &cmd_value, 1) != FCD_MODE_APP)
	{
		qWarning() << "FCDProPlusInput::set_rcFilter: failed to set at " << cmd_value;
	}
}

void FCDProInput::set_gain2(int index)
{
	if ((index < 0) || (index >= FCDProConstants::fcdpro_if_gain2_nb_values()))
	{
		return;
	}

	quint8 cmd_value = FCDProConstants::if_gains2[index].value;

	if (fcdAppSetParam(m_dev, FCDPRO_HID_CMD_SET_IF_GAIN2, &cmd_value, 1) != FCD_MODE_APP)
	{
		qWarning() << "FCDProPlusInput::set_gain2: failed to set at " << cmd_value;
	}
}

void FCDProInput::set_gain3(int index)
{
	if ((index < 0) || (index >= FCDProConstants::fcdpro_if_gain3_nb_values()))
	{
		return;
	}

	quint8 cmd_value = FCDProConstants::if_gains3[index].value;

	if (fcdAppSetParam(m_dev, FCDPRO_HID_CMD_SET_IF_GAIN3, &cmd_value, 1) != FCD_MODE_APP)
	{
		qWarning() << "FCDProPlusInput::set_gain3: failed to set at " << cmd_value;
	}
}

void FCDProInput::set_gain4(int index)
{
	if ((index < 0) || (index >= FCDProConstants::fcdpro_if_gain4_nb_values()))
	{
		return;
	}

	quint8 cmd_value = FCDProConstants::if_gains4[index].value;

	if (fcdAppSetParam(m_dev, FCDPRO_HID_CMD_SET_IF_GAIN4, &cmd_value, 1) != FCD_MODE_APP)
	{
		qWarning() << "FCDProPlusInput::set_gain4: failed to set at " << cmd_value;
	}
}

void FCDProInput::set_ifFilter(int index)
{
	if ((index < 0) || (index >= FCDProConstants::fcdpro_if_filter_nb_values()))
	{
		return;
	}

	quint8 cmd_value = FCDProConstants::if_filters[index].value;

	if (fcdAppSetParam(m_dev, FCDPRO_HID_CMD_SET_IF_FILTER, &cmd_value, 1) != FCD_MODE_APP)
	{
		qWarning() << "FCDProPlusInput::set_ifFilter: failed to set at " << cmd_value;
	}

}

void FCDProInput::set_gain5(int index)
{
	if ((index < 0) || (index >= FCDProConstants::fcdpro_if_gain5_nb_values()))
	{
		return;
	}

	quint8 cmd_value = FCDProConstants::if_gains5[index].value;

	if (fcdAppSetParam(m_dev, FCDPRO_HID_CMD_SET_IF_GAIN5, &cmd_value, 1) != FCD_MODE_APP)
	{
		qWarning() << "FCDProPlusInput::set_gain5: failed to set at " << cmd_value;
	}
}

void FCDProInput::set_gain6(int index)
{
	if ((index < 0) || (index >= FCDProConstants::fcdpro_if_gain6_nb_values()))
	{
		return;
	}

	quint8 cmd_value = FCDProConstants::if_gains6[index].value;

	if (fcdAppSetParam(m_dev, FCDPRO_HID_CMD_SET_IF_GAIN6, &cmd_value, 1) != FCD_MODE_APP)
	{
		qWarning() << "FCDProPlusInput::set_gain6: failed to set at " << cmd_value;
	}
}

void FCDProInput::set_lo_ppm()
{
	set_center_freq((double) m_settings.centerFrequency);
}