From 1ed1fc6d3b7d8494ce3bbc5f8b46bfde6fc586f9 Mon Sep 17 00:00:00 2001
From: Giorgio Arena <giorgio.arena@arm.com>
Date: Mon, 26 Mar 2018 16:20:05 +0100
Subject: COMPMID-812 Add NHWC data format support for NEON depthwise
 convolution (optimized case).

Change-Id: Icdfd6c02ed526daf4f59a4b76c7bbc1bc48fde74
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/125938
Tested-by: Jenkins <bsgcomp@arm.com>
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
---
 .../reference/DepthwiseConvolutionLayer.cpp        | 29 +++++++++++++++++-----
 1 file changed, 23 insertions(+), 6 deletions(-)

(limited to 'tests/validation/reference/DepthwiseConvolutionLayer.cpp')

diff --git a/tests/validation/reference/DepthwiseConvolutionLayer.cpp b/tests/validation/reference/DepthwiseConvolutionLayer.cpp
index b2a7067709..ab61b7dd65 100644
--- a/tests/validation/reference/DepthwiseConvolutionLayer.cpp
+++ b/tests/validation/reference/DepthwiseConvolutionLayer.cpp
@@ -24,6 +24,7 @@
 #include "DepthwiseConvolutionLayer.h"
 
 #include "ConvolutionLayer.h"
+#include "Permute.h"
 #include "Utils.h"
 
 #include "tests/validation/FixedPoint.h"
@@ -50,11 +51,8 @@ namespace reference
  *
  */
 template <typename T, typename TB>
-SimpleTensor<T> depthwise_convolution(const SimpleTensor<T> &src, const SimpleTensor<T> &weights, const SimpleTensor<TB> &biases, const TensorShape &dst_shape, const PadStrideInfo &conv_info)
+void depthwise_convolution_nchw(const SimpleTensor<T> &src, const SimpleTensor<T> &weights, const SimpleTensor<TB> &biases, SimpleTensor<T> &dst, const PadStrideInfo &conv_info)
 {
-    // Create reference
-    SimpleTensor<T> dst{ dst_shape, src.data_type(), 1, src.fixed_point_position() };
-
     // Compute reference
     const int filter_width  = weights.shape().x();
     const int filter_height = weights.shape().y();
@@ -108,8 +106,6 @@ SimpleTensor<T> depthwise_convolution(const SimpleTensor<T> &src, const SimpleTe
             }
         }
     }
-
-    return dst;
 }
 
 template <>
@@ -195,6 +191,27 @@ SimpleTensor<uint8_t> depthwise_convolution(const SimpleTensor<uint8_t> &src, co
     return dst;
 }
 
+template <typename T, typename TB>
+SimpleTensor<T> depthwise_convolution(const SimpleTensor<T> &src, const SimpleTensor<T> &weights, const SimpleTensor<TB> &biases, const TensorShape &dst_shape, const PadStrideInfo &conv_info)
+{
+    SimpleTensor<T> dst{ dst_shape, src.data_type(), 1, src.fixed_point_position() };
+
+    if(src.data_layout() == DataLayout::NHWC && src.data_type() == DataType::F32)
+    {
+        SimpleTensor<T> src_nchw     = reference::permute<T>(src, PermutationVector(1U, 2U, 0U));
+        SimpleTensor<T> weights_nchw = reference::permute<T>(weights, PermutationVector(1U, 2U, 0U));
+        SimpleTensor<T> dst_nchw     = reference::permute<T>(dst, PermutationVector(1U, 2U, 0U));
+
+        depthwise_convolution_nchw<T, TB>(src_nchw, weights_nchw, biases, dst_nchw, conv_info);
+
+        return reference::permute<T>(dst_nchw, PermutationVector(2U, 0U, 1U));
+    }
+
+    depthwise_convolution_nchw<T, TB>(src, weights, biases, dst, conv_info);
+
+    return dst;
+}
+
 template SimpleTensor<float> depthwise_convolution(const SimpleTensor<float> &src, const SimpleTensor<float> &weights, const SimpleTensor<float> &biases, const TensorShape &dst_shape,
                                                    const PadStrideInfo &conv_info);
 
-- 
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