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/*****************************************************************
Copyright (C) 2014 Intel Corporation
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
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 "ambtmpl_cansignal.h"
template<>
bool convert<bool>( double temp )
{
return abs(temp) > std::numeric_limits<double>::epsilon();
}
double fromGVariant(GVariant *value)
{
GVariantClass c = g_variant_classify(value);
if(c == G_VARIANT_CLASS_BOOLEAN)
return g_variant_get_boolean(value) ? 1.0 : 0.0;
else if(c == G_VARIANT_CLASS_BYTE)
return static_cast<double>(g_variant_get_byte(value));
else if(c == G_VARIANT_CLASS_INT16)
return static_cast<double>(g_variant_get_int16(value));
else if(c == G_VARIANT_CLASS_UINT16)
return static_cast<double>(g_variant_get_uint16(value));
else if(c == G_VARIANT_CLASS_INT32)
return static_cast<double>(g_variant_get_int32(value));
else if(c == G_VARIANT_CLASS_UINT32)
return static_cast<double>(g_variant_get_uint32(value));
else if(c == G_VARIANT_CLASS_INT64)
return static_cast<double>(g_variant_get_int64(value));
else if(c == G_VARIANT_CLASS_UINT64)
return static_cast<double>(g_variant_get_uint64(value));
else if(c == G_VARIANT_CLASS_DOUBLE)
return static_cast<double>(g_variant_get_double(value));
else
return 0.0;
}
CANSignal::CANSignal(std::function<AbstractPropertyType* ()> factoryFunction) :
ambProperty(nullptr),
signature(static_cast<GVariantClass>(0)),
factoryFunction(factoryFunction)
{
}
CANSignal::~CANSignal()
{
}
void CANSignal::onMessage(const can_frame& frame, std::function<void (AbstractPropertyType*)> changeCallback)
{
std::unique_ptr<GVariant, decltype(&g_variant_unref)> variant(processSignal(frame), &g_variant_unref);
if(variant){
std::unique_ptr<GVariant, decltype(&g_variant_unref)> oldValue(ambProperty->toVariant(), &g_variant_unref);
if(!g_variant_equal(variant.get(), oldValue.get())) {
ambProperty->fromVariant( variant.get() );
if(changeCallback)
changeCallback(ambProperty.get());
}
}
}
void CANSignal::onTimeout(const can_frame& frame, std::function<void (AbstractPropertyType*)> changeCallback)
{
//TODO: implement <no-value> handling
/* if (ambProperty->toString() != "none") {
ambProperty->setValue("none");
if(changeCallback)
changeCallback(ambProperty.get());
}
*/
}
void CANSignal::setAmbProperty(std::shared_ptr<AbstractPropertyType> ambProperty)
{
this->ambProperty = ambProperty;
std::unique_ptr<GVariant, decltype(&g_variant_unref)> variant(ambProperty->toVariant(), &g_variant_unref);
if(variant)
signature = g_variant_classify(variant.get());
}
template <>
GVariant* CANSignal::processFrameBits<bool>( const can_frame& frame )
{
bool value = getSignalBits( frame ) != 0ull;
return toGVariant<bool>(value, signature);
}
bool CANSignal::updateFrame(can_frame* frame)
{
if(/*!value ||*/ !frame)
return false;
std::unique_ptr<GVariant, decltype(&g_variant_unref)> variant(ambProperty->toVariant(), &g_variant_unref);
//ambProperty->fromVariant(variant.get());
double val(fromGVariant(variant.get()));
double temp = (val - signalInfo.m_offset)/signalInfo.m_factor;
int64_t bits = conversionFunctionTo(val, static_cast<int64_t>(temp));
*(reinterpret_cast<uint64_t*>(&frame->data[0])) |= toSignalBits(bits);
return true;
}
int64_t CANSignal::getSignalBits( const can_frame& frame )
{
int64_t bits = *reinterpret_cast<const int64_t* >(frame.data);
int startbit = signalInfo.m_startbit;
if (signalInfo.m_byteOrdering == Motorola ) {
// Motorola
bits = __bswap_64(bits);
int rounded = signalInfo.m_startbit & (~0x07); //(signalInfo.m_startbit/8)*8;
int remainder = signalInfo.m_startbit & 0x07; //signalInfo.m_startbit % 8;
startbit = (CANFrameDataSize - ( (8 - remainder) + rounded) - (signalInfo.m_length - 1) );
}
else{
// Intel - do nothing
}
bits = bits >> startbit;
uint64_t mask = ~(0ull);
if(signalInfo.m_length < 64){
mask = (1ull << static_cast<uint64_t>(signalInfo.m_length)) - 1ull;
}
bits &= mask;
if(signalInfo.m_signedness){
if(signalInfo.m_length <= 8 ){
bits = static_cast<int8_t>(bits);
}
else if(signalInfo.m_length <= 16 ){
bits = static_cast<int16_t>(bits);
}
else if(signalInfo.m_length <= 32 ){
bits = static_cast<int32_t>(bits);
}
}
return bits;
}
uint64_t CANSignal::toSignalBits( int64_t bits )
{
uint64_t signBit(0ull);
if(signalInfo.m_signedness && bits < 0ull){
signBit = (1ull << static_cast<uint64_t>(signalInfo.m_length-1));
}
uint64_t mask = ~(0ull);
if(signalInfo.m_length < 64){
mask = (1ull << static_cast<uint64_t>(signalInfo.m_length)) - 1ull;
}
bits &= mask;
bits |= signBit;
int startbit = signalInfo.m_startbit;
if (signalInfo.m_byteOrdering == Motorola ) {
// Motorola
int rounded = signalInfo.m_startbit & (~0x07); //(signalInfo.m_startbit/8)*8;
int remainder = signalInfo.m_startbit & 0x07; //signalInfo.m_startbit % 8;
startbit = (CANFrameDataSize - ( (8 - remainder) + rounded) - (signalInfo.m_length - 1) );
}
else{
// Intel - do nothing
}
bits = bits << startbit;
if (signalInfo.m_byteOrdering == Motorola ) {
bits = __bswap_64(bits);
}
return bits;
}
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