From 303f0dbebf631b3db00d9d64e71018abbbe9d4fe Mon Sep 17 00:00:00 2001
From: Georgios Pinitas <georgios.pinitas@arm.com>
Date: Mon, 19 Nov 2018 11:56:51 +0000
Subject: COMPMID-1718: Extend DepthConvert to support Cast

Change-Id: I6ee2c0b670727fc808fa636c53ddfaec3a0036c9
---
 tests/validation/reference/DepthConvertLayer.cpp | 99 ++++++++++++++++++------
 1 file changed, 77 insertions(+), 22 deletions(-)

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

diff --git a/tests/validation/reference/DepthConvertLayer.cpp b/tests/validation/reference/DepthConvertLayer.cpp
index fd2e0ae378..4d5b97b478 100644
--- a/tests/validation/reference/DepthConvertLayer.cpp
+++ b/tests/validation/reference/DepthConvertLayer.cpp
@@ -25,6 +25,9 @@
 
 #include "tests/validation/Helpers.h"
 
+#include "arm_compute/core/utils/misc/Rounding.h"
+#include "arm_compute/core/utils/misc/SaturateCast.h"
+
 #include "tests/Types.h"
 
 namespace arm_compute
@@ -35,13 +38,13 @@ namespace validation
 {
 namespace reference
 {
-template < typename T1, typename T2, typename std::enable_if < std::is_integral<T1>::value &&std::is_integral<T2>::value &&!std::is_same<T1, T2>::value, int >::type >
+template < typename T1, typename T2, typename std::enable_if < std::is_integral<T1>::value &&!std::is_same<T1, T2>::value, int >::type >
 SimpleTensor<T2> depth_convert(const SimpleTensor<T1> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift)
 {
     SimpleTensor<T2> result(src.shape(), dt_out);
 
     // Up-casting
-    if(src.data_type() <= dt_out)
+    if(element_size_from_data_type(src.data_type()) < element_size_from_data_type(dt_out))
     {
         for(int i = 0; i < src.num_elements(); ++i)
         {
@@ -54,48 +57,100 @@ SimpleTensor<T2> depth_convert(const SimpleTensor<T1> &src, DataType dt_out, Con
         for(int i = 0; i < src.num_elements(); ++i)
         {
             T1 val    = src[i] >> shift;
-            result[i] = (policy == ConvertPolicy::SATURATE) ? saturate_cast<T2>(val) : static_cast<T2>(val);
+            result[i] = (policy == ConvertPolicy::SATURATE) ? utils::cast::saturate_cast<T2>(val) : static_cast<T2>(val);
         }
     }
     return result;
 }
 
-template < typename T1, typename T2, typename std::enable_if < is_floating_point<T1>::value &&is_floating_point<T2>::value &&!std::is_same<T1, T2>::value, int >::type >
+template < typename T1, typename T2, typename std::enable_if < is_floating_point<T1>::value &&!std::is_same<T1, T2>::value, int >::type >
 SimpleTensor<T2> depth_convert(const SimpleTensor<T1> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift)
 {
     SimpleTensor<T2> result(src.shape(), dt_out);
+    ARM_COMPUTE_ERROR_ON(shift != 0);
+    ARM_COMPUTE_UNUSED(policy, shift);
 
-    const uint32_t scale = 1 << shift;
-
-    // Up-casting
-    if(src.data_type() <= dt_out)
+    // Always saturate on floats
+    for(int i = 0; i < src.num_elements(); ++i)
     {
-        for(int i = 0; i < src.num_elements(); ++i)
-        {
-            result[i] = src[i] * static_cast<T2>(scale);
-        }
-    }
-    // Down-casting
-    else
-    {
-        for(int i = 0; i < src.num_elements(); ++i)
-        {
-            T1 val    = src[i] / static_cast<T1>(scale);
-            result[i] = (policy == ConvertPolicy::SATURATE) ? saturate_cast<T2>(val) : static_cast<T2>(val);
-        }
+        T1 val    = utils::rounding::round_half_away_from_zero(src[i]);
+        result[i] = utils::cast::saturate_cast<T2>(val);
     }
     return result;
 }
 
+// U8
+template SimpleTensor<int8_t> depth_convert(const SimpleTensor<uint8_t> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
 template SimpleTensor<uint16_t> depth_convert(const SimpleTensor<uint8_t> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
 template SimpleTensor<int16_t> depth_convert(const SimpleTensor<uint8_t> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+template SimpleTensor<uint32_t> depth_convert(const SimpleTensor<uint8_t> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
 template SimpleTensor<int32_t> depth_convert(const SimpleTensor<uint8_t> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+template SimpleTensor<half> depth_convert(const SimpleTensor<uint8_t> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+template SimpleTensor<float> depth_convert(const SimpleTensor<uint8_t> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+
+// S8
+template SimpleTensor<uint8_t> depth_convert(const SimpleTensor<int8_t> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+template SimpleTensor<uint16_t> depth_convert(const SimpleTensor<int8_t> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+template SimpleTensor<int16_t> depth_convert(const SimpleTensor<int8_t> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+template SimpleTensor<uint32_t> depth_convert(const SimpleTensor<int8_t> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+template SimpleTensor<int32_t> depth_convert(const SimpleTensor<int8_t> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+template SimpleTensor<half> depth_convert(const SimpleTensor<int8_t> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+template SimpleTensor<float> depth_convert(const SimpleTensor<int8_t> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+
+// U16
 template SimpleTensor<uint8_t> depth_convert(const SimpleTensor<uint16_t> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+template SimpleTensor<int8_t> depth_convert(const SimpleTensor<uint16_t> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+template SimpleTensor<int16_t> depth_convert(const SimpleTensor<uint16_t> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
 template SimpleTensor<uint32_t> depth_convert(const SimpleTensor<uint16_t> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+template SimpleTensor<int32_t> depth_convert(const SimpleTensor<uint16_t> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+template SimpleTensor<half> depth_convert(const SimpleTensor<uint16_t> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+template SimpleTensor<float> depth_convert(const SimpleTensor<uint16_t> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+
+// S16
 template SimpleTensor<uint8_t> depth_convert(const SimpleTensor<int16_t> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+template SimpleTensor<int8_t> depth_convert(const SimpleTensor<int16_t> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+template SimpleTensor<uint16_t> depth_convert(const SimpleTensor<int16_t> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+template SimpleTensor<uint32_t> depth_convert(const SimpleTensor<int16_t> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
 template SimpleTensor<int32_t> depth_convert(const SimpleTensor<int16_t> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
-template SimpleTensor<half> depth_convert(const SimpleTensor<float> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+template SimpleTensor<half> depth_convert(const SimpleTensor<int16_t> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+template SimpleTensor<float> depth_convert(const SimpleTensor<int16_t> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+
+// U32
+template SimpleTensor<uint8_t> depth_convert(const SimpleTensor<uint32_t> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+template SimpleTensor<int8_t> depth_convert(const SimpleTensor<uint32_t> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+template SimpleTensor<uint16_t> depth_convert(const SimpleTensor<uint32_t> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+template SimpleTensor<int16_t> depth_convert(const SimpleTensor<uint32_t> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+template SimpleTensor<int32_t> depth_convert(const SimpleTensor<uint32_t> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+template SimpleTensor<half> depth_convert(const SimpleTensor<uint32_t> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+template SimpleTensor<float> depth_convert(const SimpleTensor<uint32_t> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+
+// S32
+template SimpleTensor<uint8_t> depth_convert(const SimpleTensor<int32_t> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+template SimpleTensor<int8_t> depth_convert(const SimpleTensor<int32_t> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+template SimpleTensor<uint16_t> depth_convert(const SimpleTensor<int32_t> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+template SimpleTensor<int16_t> depth_convert(const SimpleTensor<int32_t> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+template SimpleTensor<uint32_t> depth_convert(const SimpleTensor<int32_t> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+template SimpleTensor<half> depth_convert(const SimpleTensor<int32_t> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+template SimpleTensor<float> depth_convert(const SimpleTensor<int32_t> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+
+// F16
+template SimpleTensor<uint8_t> depth_convert(const SimpleTensor<half> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+template SimpleTensor<int8_t> depth_convert(const SimpleTensor<half> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+template SimpleTensor<uint16_t> depth_convert(const SimpleTensor<half> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+template SimpleTensor<int16_t> depth_convert(const SimpleTensor<half> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+template SimpleTensor<uint32_t> depth_convert(const SimpleTensor<half> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+template SimpleTensor<int32_t> depth_convert(const SimpleTensor<half> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
 template SimpleTensor<float> depth_convert(const SimpleTensor<half> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+
+// F32
+template SimpleTensor<uint8_t> depth_convert(const SimpleTensor<float> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+template SimpleTensor<int8_t> depth_convert(const SimpleTensor<float> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+template SimpleTensor<uint16_t> depth_convert(const SimpleTensor<float> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+template SimpleTensor<int16_t> depth_convert(const SimpleTensor<float> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+template SimpleTensor<uint32_t> depth_convert(const SimpleTensor<float> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+template SimpleTensor<int32_t> depth_convert(const SimpleTensor<float> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+template SimpleTensor<half> depth_convert(const SimpleTensor<float> &src, DataType dt_out, ConvertPolicy policy, uint32_t shift);
+
 } // namespace reference
 } // namespace validation
 } // namespace test
-- 
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