COMPMID-2225: Add interface support for new quantized data types.

Add support for:
-QSYMM8, 8-bit quantized symmetric
-QSYMM8_PER_CHANNEL, 8-bit quantized symmetric with per channel quantization

Change-Id: I00c4ff98e44af37419470af61419ee95d0de2463
Signed-off-by: Georgios Pinitas <georgios.pinitas@arm.com>
Reviewed-on: https://review.mlplatform.org/c/1236
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Gian Marco Iodice <gianmarco.iodice@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>

2 files changed, 28 insertions, 2 deletions

diff --git a/arm_compute/core/CL/CLTypes.h b/arm_compute/core/CL/CLTypes.h
index 4a03cc9637..24ae542c7c 100644
--- a/arm_compute/core/CL/CLTypes.h
+++ b/arm_compute/core/CL/CLTypes.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2018 ARM Limited.
+ * Copyright (c) 2017-2019 ARM Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -24,6 +24,7 @@
 #ifndef __ARM_COMPUTE_CL_TYPES_H__
 #define __ARM_COMPUTE_CL_TYPES_H__
 
+#include "arm_compute/core/CL/ICLArray.h"
 #include "arm_compute/core/GPUTarget.h"
 
 #include <string>
@@ -53,5 +54,23 @@ struct CLDeviceOptions
     size_t      num_cores;   /**< Number of cores */
     size_t      cache_size;  /**< Cache size */
 };
+
+/** OpenCL quantization data */
+struct CLQuantization
+{
+    /** Default Constructor */
+    CLQuantization()
+        : scale(nullptr), offset(nullptr) {};
+    /** Constructor
+     *
+     * @param[in] scale  OpenCL scale array
+     * @param[in] offset OpenCL offset array
+     */
+    CLQuantization(const ICLFloatArray *scale, const ICLInt32Array *offset)
+        : scale(scale), offset(offset) {};
+
+    const ICLFloatArray *scale;  /**< Quantization scale array */
+    const ICLInt32Array *offset; /**< Quantization offset array */
+};
 } // namespace arm_compute
 #endif /* __ARM_COMPUTE_CL_TYPES_H__ */
diff --git a/arm_compute/core/CL/ICLTensor.h b/arm_compute/core/CL/ICLTensor.h
index 0f5dba923b..094a0c3dec 100644
--- a/arm_compute/core/CL/ICLTensor.h
+++ b/arm_compute/core/CL/ICLTensor.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2018 ARM Limited.
+ * Copyright (c) 2016-2019 ARM Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -26,6 +26,8 @@
 
 #include "arm_compute/core/ITensor.h"
 
+#include "arm_compute/core/CL/CLTypes.h"
+
 #include <cstdint>
 
 namespace cl
@@ -53,6 +55,11 @@ public:
     /** Default virtual destructor. */
     virtual ~ICLTensor() = default;
 
+    /** Interface to be implemented by the child class to return the wrapped quantization info data
+     *
+     * @return A wrapped quantization info object.
+     */
+    virtual CLQuantization quantization() const = 0;
     /** Interface to be implemented by the child class to return a reference to the OpenCL buffer containing the image's data.
      *
      * @return A reference to an OpenCL buffer containing the image's data.