xref: /aosp_15_r20/external/android-nn-driver/1.0/FullyConnected.hpp (revision 3e777be0405cee09af5d5785ff37f7cfb5bee59a) 
1 //
2 // Copyright © 2017 Arm Ltd. All rights reserved.
3 // SPDX-License-Identifier: MIT
4 //
5 
6 #pragma once
7 
8 #include <armnn/Tensor.hpp>
9 
10 #include "../ConversionUtils.hpp"
11 
12 namespace armnn_driver
13 {
14 
FlattenFullyConnectedInput(const armnn::TensorShape & inputShape,const armnn::TensorShape & weightsShape)15 inline armnn::TensorShape FlattenFullyConnectedInput(const armnn::TensorShape& inputShape,
16                                                      const armnn::TensorShape& weightsShape)
17 {
18     if (inputShape.GetNumDimensions() > 2U)
19     {
20         unsigned int totalInputElements = inputShape.GetNumElements();
21         unsigned int inputSize = weightsShape[1];
22 
23         unsigned int batchSize = totalInputElements / inputSize;
24 
25         if(totalInputElements % batchSize != 0)
26         {
27             throw std::runtime_error("Failed to deduce tensor shape");
28         }
29 
30         return armnn::TensorShape({batchSize, inputSize});
31     }
32     else
33     {
34         return inputShape;
35     }
36 }
37 
VerifyFullyConnectedShapes(const armnn::TensorShape & inputShape,const armnn::TensorShape & weightsShape,const armnn::TensorShape & outputShape,bool transposeWeightMatrix)38 inline bool VerifyFullyConnectedShapes(const armnn::TensorShape& inputShape,
39                                        const armnn::TensorShape& weightsShape,
40                                        const armnn::TensorShape& outputShape,
41                                        bool  transposeWeightMatrix)
42 {
43     unsigned int dimIdx = transposeWeightMatrix ? 0 : 1;
44     return (inputShape[0] == outputShape[0] && weightsShape[dimIdx] == outputShape[1]);
45 }
46 
47 }