public void FuseInputsIntoLayer(ref Layer layer, Dictionary <string, Tensor> knownLayersValue, IDictionary <string, int?> ranksByName, List <Model.ImporterWarning> warnings)
{
switch (layer.type)
{
case Layer.Type.Border2D:
case Layer.Type.Border3D:
case Layer.Type.Pad2DEdge:
case Layer.Type.Pad2DReflect:
case Layer.Type.Pad2DSymmetric:
{
if (layer.inputs.Length <= 1 || !IsLayerKnown(layer.inputs[1], knownLayersValue))
{
return;
}
float[] padsFloat = knownLayersValue[layer.inputs[1]].ToReadOnlyArray();
layer.inputs = new[] { layer.inputs[0] };
var pads = Array.ConvertAll(padsFloat, x => (int)x);
var starts = pads.Take(pads.Length / 2).ToArray();
var ends = pads.Skip(pads.Length / 2).ToArray();
bool[] dimHavePadding = new bool[starts.Length];
for (int i = 0; i < starts.Length; ++i)
{
dimHavePadding[i] = starts[i] != 0 && ends[i] != 0;
}
if (dimHavePadding.SequenceEqual(new bool [] { false, true, true, false }))
{
// Look like this padding operator is defined over NHWC layout
// We skip first and last dimension thus
starts = starts.Skip(1).Take(2).ToArray();
ends = ends.Skip(1).Take(2).ToArray();
layer.axes = new int[] { -1 }; // Mark the layer padding as being imported as NHWC layout
}
else
{
// Skip non-spatial dimensions N, C (NCHW layout)
starts = starts.Skip(2).ToArray();
ends = ends.Skip(2).ToArray();
}
switch (starts.Length)
{
case 1: layer.pad = new [] { starts[0], 0, ends[0], 0 }; break; // 1D W => W_
case 2: layer.pad = new [] { starts[1], starts[0], ends[1], ends[0] }; break; // 2D HW => WH
default: layer.pad = new [] { starts[2], starts[1], starts[0], ends[2], ends[1], ends[0] }; break; // 3D DHW => WHD
}
float value = 0.0f;
if (layer.inputs.Length >= 3 && IsLayerKnown(layer.inputs[2], knownLayersValue))
{
value = knownLayersValue[layer.inputs[2]].ToReadOnlyArray()[0];
}
layer.beta = value;
return;
}
case Layer.Type.Upsample2D:
{
if (layer.inputs.Length <= 1 || !IsLayerKnown(layer.inputs[1], knownLayersValue))
{
return;
}
float[] scales = knownLayersValue[layer.inputs[1]].ToReadOnlyArray();
if (scales[0] == 1 && scales[1] == 1 && scales[2] < 1.0f && scales[3] < 1.0f && layer.axis >= 0.0f)
{
ValidationHelper.AppendWarning(scales.All(x => Mathf.Approximately(1f / x, Mathf.Round(1f / x))),
layer.name, $"Only inverse of scale values which produce integer are currently supported. Inverse of scale value will be rounded to closest integer.", ref warnings, MessageType.Warning);
scales = new[] { scales[2], scales[3] };
layer.type = Layer.Type.AvgPool2D;
layer.pad = new[] { 0, 0, 0, 0 };
var inverseScalesRoundedToInt = scales.Select(x => (int)Mathf.Round(1f / x)).ToArray();
layer.stride = inverseScalesRoundedToInt;
layer.pool = inverseScalesRoundedToInt;
}
else
{
ValidationHelper.AppendWarning(scales.All(x => Mathf.Approximately(x, Mathf.Round(x))),
layer.name, $"Only integer scale values are currently supported. Scale value will be rounded to closest integer value.", ref warnings, MessageType.Warning);
layer.inputs = new[] { layer.inputs[0] };
layer.pool = Array.ConvertAll(scales, x => (int)x);
}
return;
}
case Layer.Type.Resample2D:
{
if (layer.inputs.Length <= 1 || !IsLayerKnown(layer.inputs[1], knownLayersValue))
{
return;
}
int[] sizes = Array.ConvertAll(knownLayersValue[layer.inputs[1]].ToReadOnlyArray(), x => (int)x);
layer.inputs = new[] { layer.inputs[0] };
layer.pool = sizes;
return;
}
case Layer.Type.Expand:
{
if (layer.inputs.Length <= 1 || !IsLayerKnown(layer.inputs[1], knownLayersValue))
{
return;
}
float[] shapeValue = knownLayersValue[layer.inputs[1]].ToReadOnlyArray();
var shape = new int[shapeValue.Length];
for (int i = 0; i < shapeValue.Length; i++)
{
shape[i] = (int)shapeValue[i];
}
layer.pool = shape;
layer.inputs = new[] { layer.inputs[0] };
return;
}
case Layer.Type.MatMul:
{
var input0 = layer.inputs[0]; var input1 = layer.inputs[1];
if (!ranksByName.ContainsKey(input0) || !ranksByName[input0].HasValue)
{
return;
}
if (!ranksByName.ContainsKey(input1) || !ranksByName[input1].HasValue)
{
return;
}
int rank0 = ranksByName[input0].Value;
int rank1 = ranksByName[input1].Value;
if (rank0 > 2 || rank1 > 2)
{
return;
}
if (!IsLayerKnown(input1, knownLayersValue))
{
return;
}
layer.type = Layer.Type.Dense;
var weight = knownLayersValue[input1];
weight = weight.Reshape(new TensorShape(weight.batch, weight.height));
var biasShape = new TensorShape(1, 1, 1, weight.shape.channels);
layer.inputs = new [] { input0 };
layer.datasets = new Layer.DataSet[2];
layer.datasets[0].name = $"{layer.name}/W";
layer.datasets[0].shape = weight.shape;
layer.datasets[0].itemSizeInBytes = 4;
layer.datasets[0].length = weight.shape.length;
layer.datasets[0].offset = 0;
layer.datasets[1].name = $"{layer.name}/B";
layer.datasets[1].shape = biasShape;
layer.datasets[1].itemSizeInBytes = 4;
layer.datasets[1].length = biasShape.length;
layer.datasets[1].offset = weight.shape.length;
layer.weights = new BarracudaArray(weight.shape.length + biasShape.length);
weight.ToReadOnlyArray().CopyToBarracudaArray(layer.weights, 0);
var zeroBias = new float[biasShape.length];
zeroBias.CopyToBarracudaArray(layer.weights, weight.shape.length);
return;
}
case Layer.Type.Tile:
{
if (layer.inputs.Length <= 1 || !IsLayerKnown(layer.inputs[1], knownLayersValue))
{
return;
}
var shape = Array.ConvertAll(knownLayersValue[layer.inputs[1]].ToReadOnlyArray(), x => (int)x);
layer.pool = shape;
layer.inputs = new[] { layer.inputs[0] };
return;
}
case Layer.Type.Reshape:
{
if (layer.inputs.Length <= 1 || !IsLayerKnown(layer.inputs[1], knownLayersValue))
{
return;
}
float[] shapeValue = knownLayersValue[layer.inputs[1]].ToReadOnlyArray();
var shape = new int[shapeValue.Length];
for (int i = 0; i < shapeValue.Length; i++)
{
shape[i] = (int)shapeValue[i];
}
layer.pool = shape;
layer.inputs = new[] { layer.inputs[0] };
return;
}
case Layer.Type.ConstantOfShape:
{
if (layer.inputs.Length < 1 || !IsLayerKnown(layer.inputs[0], knownLayersValue))
{
return;
}
Tensor input = knownLayersValue[layer.inputs[0]];
var shape = Array.ConvertAll(input.ToReadOnlyArray(), x => (int)x);
var tensorShape = IRShapeInferenceHelper.ShapeInference.OnnxLayoutToTensorShape(shape);
layer.type = Layer.Type.Load;
layer.axis = shape.Length;
layer.datasets = new Layer.DataSet[1];
layer.datasets[0].name = layer.name;
layer.datasets[0].shape = tensorShape;
layer.datasets[0].itemSizeInBytes = 4;
layer.datasets[0].length = tensorShape.length;
layer.datasets[0].offset = 0;
layer.weights = new BarracudaArray(tensorShape.length);
var tensor = new Tensor(tensorShape);
tensor.Fill(layer.alpha);
tensor.ToReadOnlyArray().CopyToBarracudaArray(layer.weights, 0);
layer.inputs = new string[0];
return;
}
case Layer.Type.LSTM:
{
if (layer.inputs.Length <= 3 || !knownLayersValue.TryGetValue(layer.inputs[1], out Tensor W) ||
!knownLayersValue.TryGetValue(layer.inputs[2], out Tensor R) ||
!knownLayersValue.TryGetValue(layer.inputs[3], out Tensor B))
{
return;
}
var ops = new ReferenceCPUOps();
using (var td = new TensorScope())
{
TensorScope.F _ = td._;
W = _(ops.Transpose(W, new[] { 2, 0, 3, 1 }));
R = _(ops.Transpose(R, new[] { 2, 0, 3, 1 }));
B = _(ops.Transpose(B, new[] { 0, 2, 3, 1 }));
OpsUtils.BakeConstantWRBIntoLSTMLayer(layer, W, R, B);
}
layer.inputs = new[] { layer.inputs[0], layer.inputs[4], layer.inputs[5] };
return;
}
case Layer.Type.Activation:
{
if (layer.activation == Layer.Activation.None)
{
if (layer.inputs.Length < 1 || !IsLayerKnown(layer.inputs[0], knownLayersValue))
{
return;
}
Tensor input = knownLayersValue[layer.inputs[0]];
var tensorShape = input.shape;
layer.type = Layer.Type.Load;
layer.axis = input.dimensions; // TODO real rank
layer.datasets = new Layer.DataSet[1];
layer.datasets[0].name = layer.name;
layer.datasets[0].shape = tensorShape;
layer.datasets[0].itemSizeInBytes = 4;
layer.datasets[0].length = tensorShape.length;
layer.datasets[0].offset = 0;
layer.weights = new BarracudaArray(tensorShape.length);
input.ToReadOnlyArray().CopyToBarracudaArray(layer.weights, 0);
layer.inputs = new string[0];
}
return;
}
case Layer.Type.Range:
{
if (layer.inputs.Length < 3 || !IsLayerKnown(layer.inputs[0], knownLayersValue) || !IsLayerKnown(layer.inputs[1], knownLayersValue) || !IsLayerKnown(layer.inputs[2], knownLayersValue))
{
return;
}
Tensor input0 = knownLayersValue[layer.inputs[0]];
Tensor input1 = knownLayersValue[layer.inputs[1]];
Tensor input2 = knownLayersValue[layer.inputs[2]];
var start = input0[0];
var limit = input1[0];
var delta = input2[0];
int nbOfElements = Mathf.Max((int)Mathf.Ceil((limit - start) / delta), 0);
layer.type = Layer.Type.Load;
layer.axis = 1;
layer.datasets = new Layer.DataSet[1];
layer.datasets[0].name = layer.name;
layer.datasets[0].shape = new TensorShape(nbOfElements, 1);
layer.datasets[0].itemSizeInBytes = 4;
layer.datasets[0].length = nbOfElements;
layer.datasets[0].offset = 0;
layer.weights = new BarracudaArray(nbOfElements);
for (int i = 0; i < nbOfElements; ++i)
{
layer.weights[i] = start + (i * delta);
}
layer.inputs = new string[0];
return;
}
case Layer.Type.StridedSlice:
{
if (layer.inputs.Length <= 1 ||
!IsLayerKnown(layer.inputs[1], knownLayersValue) || !IsLayerKnown(layer.inputs[2], knownLayersValue) || !IsLayerKnown(layer.inputs[3], knownLayersValue) || !IsLayerKnown(layer.inputs[4], knownLayersValue))
{
return;
}
var starts = Array.ConvertAll(knownLayersValue[layer.inputs[1]].ToReadOnlyArray(), x => x <= (float)int.MinValue ? int.MinValue : x >= (float)int.MaxValue ? int.MaxValue : (int)x);
var ends = Array.ConvertAll(knownLayersValue[layer.inputs[2]].ToReadOnlyArray(), x => x <= (float)int.MinValue ? int.MinValue : x >= (float)int.MaxValue ? int.MaxValue : (int)x);
var strides = Enumerable.Repeat(1, starts.Length).Select(v => (int)v).ToArray();
if (layer.inputs.Length >= 4)
{
strides = Array.ConvertAll(knownLayersValue[layer.inputs[3]].ToReadOnlyArray(), x => (int)x);
}
var axes = Enumerable.Range(0, starts.Length).Select(v => (int)v).ToArray();
if (layer.inputs.Length == 5)
{
axes = Array.ConvertAll(knownLayersValue[layer.inputs[4]].ToReadOnlyArray(), x => (int)x);
}
layer.pad = starts;
layer.pool = ends;
layer.stride = strides;
layer.axes = axes;
layer.inputs = new[] { layer.inputs[0] };
return;
}
case Layer.Type.Squeeze:
{
if (layer.inputs.Length <= 1 || !IsLayerKnown(layer.inputs[1], knownLayersValue))
{
return;
}
int[] axes = Array.ConvertAll(knownLayersValue[layer.inputs[1]].ToReadOnlyArray(), x => (int)x);
layer.pool = axes;
layer.inputs = new[] { layer.inputs[0] };
return;
}
case Layer.Type.Unsqueeze:
{
if (layer.inputs.Length <= 1 || !IsLayerKnown(layer.inputs[1], knownLayersValue))
{
return;
}
int[] axes = Array.ConvertAll(knownLayersValue[layer.inputs[1]].ToReadOnlyArray(), x => (int)x);
layer.pool = axes;
layer.inputs = new[] { layer.inputs[0] };
return;
}
case Layer.Type.Pad:
{
if (layer.inputs.Length <= 1)
{
return;
}
if (layer.inputs.Length == 2 && !IsLayerKnown(layer.inputs[1], knownLayersValue))
{
return;
}
if (layer.inputs.Length == 3 && !IsLayerKnown(layer.inputs[1], knownLayersValue) && !IsLayerKnown(layer.inputs[2], knownLayersValue))
{
return;
}
float value = (layer.inputs.Length == 2) ? layer.beta : knownLayersValue[layer.inputs[2]].ToReadOnlyArray()[0];
int[] pads = Array.ConvertAll(knownLayersValue[layer.inputs[1]].ToReadOnlyArray(), x => (int)x);
layer.beta = value;
layer.pad = pads;
layer.inputs = (layer.inputs.Length == 2) ? new [] { layer.inputs[0] } : new [] { layer.inputs[0], layer.inputs[1] };
return;
}
default:
return;
}
}
public void FuseInputsIntoLayer(ref Layer layer, Dictionary <string, Tensor> knownLayersValue, IDictionary <string, int?> ranksByName)
{
switch (layer.type)
{
case Layer.Type.Border2D:
case Layer.Type.Border3D:
case Layer.Type.Pad2DEdge:
case Layer.Type.Pad2DReflect:
case Layer.Type.Pad2DSymmetric:
{
if (layer.inputs.Length <= 1 || !IsLayerKnown(layer.inputs[1], knownLayersValue))
{
return;
}
float[] padsFloat = knownLayersValue[layer.inputs[1]].ToReadOnlyArray();
layer.inputs = new[] { layer.inputs[0] };
var pads = Array.ConvertAll(padsFloat, x => (int)x);
// Skip non-spatial dimensions N, C (NCHW layout)
var starts = pads.Take(pads.Length / 2).ToArray();
var ends = pads.Skip(pads.Length / 2).ToArray();
starts = starts.Skip(2).ToArray();
ends = ends.Skip(2).ToArray();
switch (starts.Length)
{
case 1: layer.pad = new [] { starts[0], 0, ends[0], 0 }; break; // 1D W => W_
case 2: layer.pad = new [] { starts[1], starts[0], ends[1], ends[0] }; break; // 2D HW => WH
default: layer.pad = new [] { starts[2], starts[1], starts[0], ends[2], ends[1], ends[0] }; break; // 3D DHW => WHD
}
float value = 0.0f;
if (layer.inputs.Length >= 3 && IsLayerKnown(layer.inputs[2], knownLayersValue))
{
value = knownLayersValue[layer.inputs[2]].ToReadOnlyArray()[0];
}
layer.beta = value;
return;
}
case Layer.Type.Upsample2D:
{
if (layer.inputs.Length <= 1 || !IsLayerKnown(layer.inputs[1], knownLayersValue))
{
return;
}
float[] scales = knownLayersValue[layer.inputs[1]].ToReadOnlyArray();
if (scales[0] == 1 && scales[1] == 1 && scales[2] < 1.0f && scales[3] < 1.0f && layer.axis >= 0.0f)
{
scales = new[] { scales[2], scales[3] };
layer.type = Layer.Type.AvgPool2D;
layer.pad = new[] { 0, 0, 0, 0 };
var inverseScalesRoundedToInt = scales.Select(x => (int)Mathf.Round(1f / x)).ToArray();
layer.stride = inverseScalesRoundedToInt;
layer.pool = inverseScalesRoundedToInt;
}
else
{
layer.inputs = new[] { layer.inputs[0] };
layer.pool = Array.ConvertAll(scales, x => (int)x);
}
return;
}
case Layer.Type.Resample2D:
{
if (layer.inputs.Length <= 1 || !IsLayerKnown(layer.inputs[1], knownLayersValue))
{
return;
}
int[] sizes = Array.ConvertAll(knownLayersValue[layer.inputs[1]].ToReadOnlyArray(), x => (int)x);
layer.inputs = new[] { layer.inputs[0] };
layer.pool = sizes;
return;
}
case Layer.Type.Expand:
{
if (layer.inputs.Length <= 1 || !IsLayerKnown(layer.inputs[1], knownLayersValue))
{
return;
}
float[] shapeValue = knownLayersValue[layer.inputs[1]].ToReadOnlyArray();
var shape = new int[shapeValue.Length];
for (int i = 0; i < shapeValue.Length; i++)
{
shape[i] = (int)shapeValue[i];
}
layer.pool = shape;
layer.inputs = new[] { layer.inputs[0] };
return;
}
case Layer.Type.MatMul:
{
var input0 = layer.inputs[0]; var input1 = layer.inputs[1];
if (!ranksByName.ContainsKey(input0) || !ranksByName[input0].HasValue)
{
return;
}
if (!ranksByName.ContainsKey(input1) || !ranksByName[input1].HasValue)
{
return;
}
int rank0 = ranksByName[input0].Value;
int rank1 = ranksByName[input1].Value;
if (rank0 > 2 || rank1 > 2)
{
return;
}
if (!IsLayerKnown(input1, knownLayersValue))
{
return;
}
layer.type = Layer.Type.Dense;
var weight = knownLayersValue[input1];
weight = weight.Reshape(new TensorShape(weight.batch, weight.height));
var biasShape = new TensorShape(1, 1, 1, weight.shape.channels);
layer.inputs = new [] { input0 };
layer.datasets = new Layer.DataSet[2];
layer.datasets[0].name = $"{layer.name}/W";
layer.datasets[0].shape = weight.shape;
layer.datasets[0].itemSizeInBytes = 4;
layer.datasets[0].length = weight.shape.length;
layer.datasets[0].offset = 0;
layer.datasets[1].name = $"{layer.name}/B";
layer.datasets[1].shape = biasShape;
layer.datasets[1].itemSizeInBytes = 4;
layer.datasets[1].length = biasShape.length;
layer.datasets[1].offset = weight.shape.length;
layer.weights = new float[weight.shape.length + biasShape.length];
weight.ToReadOnlyArray().CopyTo(layer.weights, 0);
return;
}
case Layer.Type.Tile:
{
if (layer.inputs.Length <= 1 || !IsLayerKnown(layer.inputs[1], knownLayersValue))
{
return;
}
var shape = Array.ConvertAll(knownLayersValue[layer.inputs[1]].ToReadOnlyArray(), x => (int)x);
layer.pool = shape;
layer.inputs = new[] { layer.inputs[0] };
return;
}
case Layer.Type.Reshape:
{
if (layer.inputs.Length <= 1 || !IsLayerKnown(layer.inputs[1], knownLayersValue))
{
return;
}
float[] shapeValue = knownLayersValue[layer.inputs[1]].ToReadOnlyArray();
var shape = new int[shapeValue.Length];
for (int i = 0; i < shapeValue.Length; i++)
{
shape[i] = (int)shapeValue[i];
}
layer.pool = shape;
layer.inputs = new[] { layer.inputs[0] };
return;
}
case Layer.Type.ConstantOfShape:
{
if (layer.inputs.Length < 1 || !IsLayerKnown(layer.inputs[0], knownLayersValue))
{
return;
}
Tensor input = knownLayersValue[layer.inputs[0]];
var shape = Array.ConvertAll(input.ToReadOnlyArray(), x => (int)x);
var tensorShape = IRShapeInferenceHelper.ShapeInference.OnnxLayoutToTensorShape(shape);
layer.type = Layer.Type.Load;
layer.axis = shape.Length;
layer.datasets = new Layer.DataSet[1];
layer.datasets[0].name = layer.name;
layer.datasets[0].shape = tensorShape;
layer.datasets[0].itemSizeInBytes = 4;
layer.datasets[0].length = tensorShape.length;
layer.datasets[0].offset = 0;
layer.weights = new float[tensorShape.length];
var tensor = new Tensor(tensorShape);
tensor.Fill(layer.alpha);
tensor.ToReadOnlyArray().CopyTo(layer.weights, 0);
layer.inputs = new string[0];
return;
}
case Layer.Type.LSTM:
{
if (layer.inputs.Length <= 3 || !knownLayersValue.TryGetValue(layer.inputs[1], out Tensor W) ||
!knownLayersValue.TryGetValue(layer.inputs[2], out Tensor R) ||
!knownLayersValue.TryGetValue(layer.inputs[3], out Tensor B))
{
return;
}
var ops = new ReferenceCPUOps();
using (var td = new TensorScope())
{
TensorScope.F _ = td._;
W = _(ops.Transpose(W, new[] { 2, 0, 3, 1 }));
R = _(ops.Transpose(R, new[] { 2, 0, 3, 1 }));
B = _(ops.Transpose(B, new[] { 0, 2, 3, 1 }));
OpsUtils.BakeConstantWRBIntoLSTMLayer(layer, W, R, B);
}
layer.inputs = new[] { layer.inputs[0], layer.inputs[4], layer.inputs[5] };
return;
}
case Layer.Type.Activation:
{
if (layer.activation == Layer.Activation.None)
{
if (layer.inputs.Length < 1 || !IsLayerKnown(layer.inputs[0], knownLayersValue))
{
return;
}
Tensor input = knownLayersValue[layer.inputs[0]];
var tensorShape = input.shape;
layer.type = Layer.Type.Load;
layer.axis = input.dimensions; // TODO real rank
layer.datasets = new Layer.DataSet[1];
layer.datasets[0].name = layer.name;
layer.datasets[0].shape = tensorShape;
layer.datasets[0].itemSizeInBytes = 4;
layer.datasets[0].length = tensorShape.length;
layer.datasets[0].offset = 0;
layer.weights = new float[tensorShape.length];
input.ToReadOnlyArray().CopyTo(layer.weights, 0);
layer.inputs = new string[0];
}
return;
}
case Layer.Type.Range:
{
if (layer.inputs.Length < 3 || !IsLayerKnown(layer.inputs[0], knownLayersValue) || !IsLayerKnown(layer.inputs[1], knownLayersValue) || !IsLayerKnown(layer.inputs[2], knownLayersValue))
{
return;
}
Tensor input0 = knownLayersValue[layer.inputs[0]];
Tensor input1 = knownLayersValue[layer.inputs[1]];
Tensor input2 = knownLayersValue[layer.inputs[2]];
var start = input0[0];
var limit = input1[0];
var delta = input2[0];
int nbOfElements = Mathf.Max((int)Mathf.Ceil((limit - start) / delta), 0);
layer.type = Layer.Type.Load;
layer.axis = 1;
layer.datasets = new Layer.DataSet[1];
layer.datasets[0].name = layer.name;
layer.datasets[0].shape = new TensorShape(nbOfElements, 1);
layer.datasets[0].itemSizeInBytes = 4;
layer.datasets[0].length = nbOfElements;
layer.datasets[0].offset = 0;
layer.weights = new float[nbOfElements];
for (int i = 0; i < nbOfElements; ++i)
{
layer.weights[i] = start + (i * delta);
}
layer.inputs = new string[0];
return;
}
case Layer.Type.StridedSlice:
{
if (layer.inputs.Length <= 1 ||
!IsLayerKnown(layer.inputs[1], knownLayersValue) || !IsLayerKnown(layer.inputs[2], knownLayersValue) || !IsLayerKnown(layer.inputs[3], knownLayersValue) || !IsLayerKnown(layer.inputs[4], knownLayersValue))
{
return;
}
var starts = Array.ConvertAll(knownLayersValue[layer.inputs[1]].ToReadOnlyArray(), x => x <= (float)int.MinValue ? int.MinValue : x >= (float)int.MaxValue ? int.MaxValue : (int)x);
var ends = Array.ConvertAll(knownLayersValue[layer.inputs[2]].ToReadOnlyArray(), x => x <= (float)int.MinValue ? int.MinValue : x >= (float)int.MaxValue ? int.MaxValue : (int)x);
var strides = Enumerable.Repeat(1, starts.Length).Select(v => (int)v).ToArray();
if (layer.inputs.Length >= 4)
{
strides = Array.ConvertAll(knownLayersValue[layer.inputs[3]].ToReadOnlyArray(), x => (int)x);
}
var axes = Enumerable.Range(0, starts.Length).Select(v => (int)v).ToArray();
if (layer.inputs.Length == 5)
{
axes = Array.ConvertAll(knownLayersValue[layer.inputs[4]].ToReadOnlyArray(), x => (int)x);
}
layer.pad = starts;
layer.pool = ends;
layer.stride = strides;
layer.axes = axes;
layer.inputs = new[] { layer.inputs[0] };
return;
}
default:
return;
}
}
