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//
// Copyright © 2017 Arm Ltd. All rights reserved.
// SPDX-License-Identifier: MIT
//
#include "StaticRangeVisitor.hpp"
#include <boost/core/ignore_unused.hpp>
#include <armnn/Descriptors.hpp>
#include <armnn/Types.hpp>
#include <limits>
namespace armnn
{
StaticRangeVisitor::StaticRangeVisitor(RangeTracker& rangeTracker)
: m_RangeTracker(rangeTracker)
{}
void StaticRangeVisitor::SetRange(const IConnectableLayer* layer, unsigned int outputIdx, float min, float max)
{
m_RangeTracker.SetRange(layer, outputIdx, min, max);
}
void StaticRangeVisitor::ForwardParentParameters(const IConnectableLayer* layer)
{
const auto parentRange = m_RangeTracker.GetRange(layer->GetInputSlot(0).GetConnection()->GetOwningLayerGuid(), 0);
SetRange(layer, 0, parentRange.first, parentRange.second);
}
void StaticRangeVisitor::VisitAdditionLayer(const IConnectableLayer* layer, const char* name)
{
SetRange(layer, 0, -20.f, 20.f);
}
void StaticRangeVisitor::VisitBatchNormalizationLayer(const IConnectableLayer* layer,
const BatchNormalizationDescriptor& desc,
const ConstTensor& mean,
const ConstTensor& variance,
const ConstTensor& beta,
const ConstTensor& gamma,
const char* name)
{
boost::ignore_unused(desc);
boost::ignore_unused(mean);
boost::ignore_unused(variance);
boost::ignore_unused(beta);
boost::ignore_unused(gamma);
boost::ignore_unused(name);
SetRange(layer, 0, -15.0f, 15.0f);
}
void StaticRangeVisitor::VisitConvolution2dLayer(const IConnectableLayer* layer,
const Convolution2dDescriptor& convolution2dDescriptor,
const ConstTensor& weights,
const Optional<ConstTensor>& biases,
const char* name)
{
boost::ignore_unused(convolution2dDescriptor);
boost::ignore_unused(weights);
boost::ignore_unused(biases);
boost::ignore_unused(name);
SetRange(layer, 0, -15.0f, 15.0f);
}
void StaticRangeVisitor::VisitDepthwiseConvolution2dLayer(const IConnectableLayer* layer,
const DepthwiseConvolution2dDescriptor& desc,
const ConstTensor& weights,
const Optional<ConstTensor>& biases,
const char* name)
{
boost::ignore_unused(desc);
boost::ignore_unused(weights);
boost::ignore_unused(biases);
boost::ignore_unused(name);
SetRange(layer, 0, -15.0f, 15.0f);
}
void StaticRangeVisitor::VisitActivationLayer(const IConnectableLayer* layer,
const ActivationDescriptor& activationDescriptor,
const char* name)
{
switch (activationDescriptor.m_Function)
{
// Range is 0, 15 for Abs, Linear, ReLu and Soft ReLu
case ActivationFunction::Abs:
case ActivationFunction::Linear:
case ActivationFunction::ReLu:
case ActivationFunction::SoftReLu:
SetRange(layer, 0, 0.f, 15.f);
break;
case ActivationFunction::BoundedReLu:
SetRange(layer, 0, 0.f, activationDescriptor.m_A);
break;
case ActivationFunction::TanH:
SetRange(layer, 0, -1.f, 1.f);
break;
case ActivationFunction::LeakyReLu:
SetRange(layer, 0, -5.f, 15.f);
break;
default:
SetRange(layer, 0, -15.f, 15.f);
break;
}
}
void StaticRangeVisitor::VisitFullyConnectedLayer(const IConnectableLayer *layer,
const FullyConnectedDescriptor& desc,
const ConstTensor& weights,
const Optional<ConstTensor>& biases,
const char *name)
{
boost::ignore_unused(desc);
boost::ignore_unused(weights);
boost::ignore_unused(biases);
boost::ignore_unused(name);
SetRange(layer, 0, -15.0f, 15.0f);
}
void StaticRangeVisitor::VisitPermuteLayer(const IConnectableLayer* layer,
const PermuteDescriptor& permuteDescriptor,
const char* name)
{
boost::ignore_unused(permuteDescriptor);
boost::ignore_unused(name);
ForwardParentParameters(layer);
}
void StaticRangeVisitor::VisitSpaceToBatchNdLayer(const IConnectableLayer* layer,
const SpaceToBatchNdDescriptor& spaceToBatchNdDescriptor,
const char* name)
{
boost::ignore_unused(spaceToBatchNdDescriptor);
boost::ignore_unused(name);
ForwardParentParameters(layer);
}
void StaticRangeVisitor::VisitPooling2dLayer(const IConnectableLayer* layer,
const Pooling2dDescriptor& pooling2dDescriptor,
const char* name)
{
boost::ignore_unused(pooling2dDescriptor);
ForwardParentParameters(layer);
}
void StaticRangeVisitor::VisitSoftmaxLayer(const IConnectableLayer* layer,
const SoftmaxDescriptor& softmaxDescriptor,
const char* name)
{
boost::ignore_unused(softmaxDescriptor);
SetRange(layer, 0, 0.f, 1.f);
}
void StaticRangeVisitor::VisitConstantLayer(const IConnectableLayer* layer,
const ConstTensor& input,
const char* name)
{
boost::ignore_unused(name);
if (input.GetDataType() != DataType::Float32)
{
throw InvalidArgumentException("Quantization is supported only for FP32 tensors");
}
// Work out the range based on the input constants
unsigned int inputNumElements = input.GetNumElements();
const float* inputData = reinterpret_cast<const float*>(input.GetMemoryArea());
float min = std::numeric_limits<float>::max();
float max = std::numeric_limits<float>::lowest();
for (unsigned int i = 0; i < inputNumElements; i++)
{
const float inputValue = inputData[i];
min = std::min(min, inputValue);
max = std::max(max, inputValue);
}
SetRange(layer, 0, min, max);
}
void StaticRangeVisitor::VisitMergerLayer(const IConnectableLayer* layer,
const OriginsDescriptor& mergerDescriptor,
const char* name)
{
float min = std::numeric_limits<float>::max();
float max = std::numeric_limits<float>::lowest();
for (unsigned int i = 0; i < layer->GetNumInputSlots(); ++i)
{
const IOutputSlot* outputSlot = layer->GetInputSlot(i).GetConnection();
LayerGuid layerId = outputSlot->GetOwningLayerGuid();
unsigned int slotIndex = outputSlot->CalculateIndexOnOwner();
RangeTracker::MinMaxRange range = m_RangeTracker.GetRange(layerId, slotIndex);
min = std::min(min, range.first);
max = std::max(max, range.second);
}
SetRange(layer, 0, min, max);
}
void StaticRangeVisitor::VisitReshapeLayer(const IConnectableLayer* layer,
const ReshapeDescriptor& reshapeDescriptor,
const char* name)
{
boost::ignore_unused(reshapeDescriptor);
boost::ignore_unused(name);
ForwardParentParameters(layer);
}
void StaticRangeVisitor::VisitSplitterLayer(const IConnectableLayer* layer,
const SplitterDescriptor& splitterDescriptor,
const char* name)
{
boost::ignore_unused(splitterDescriptor);
boost::ignore_unused(name);
ForwardParentParameters(layer);
}
void StaticRangeVisitor::VisitResizeBilinearLayer(const IConnectableLayer* layer,
const ResizeBilinearDescriptor& resizeDesc,
const char* name)
{
boost::ignore_unused(resizeDesc);
boost::ignore_unused(name);
ForwardParentParameters(layer);
}
void StaticRangeVisitor::VisitStridedSliceLayer(const IConnectableLayer* layer,
const StridedSliceDescriptor& stridedSliceDescriptor,
const char* name)
{
boost::ignore_unused(stridedSliceDescriptor);
boost::ignore_unused(name);
ForwardParentParameters(layer);
}
void StaticRangeVisitor::VisitBatchToSpaceNdLayer(const IConnectableLayer* layer,
const BatchToSpaceNdDescriptor& batchToSpaceNdDescriptor,
const char* name)
{
boost::ignore_unused(batchToSpaceNdDescriptor);
boost::ignore_unused(name);
ForwardParentParameters(layer);
}
} //namespace armnn
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