COMPMID-617: Add validation functions.

Added validation routines to the following kernels.
-CLActivationLayer
-CLBatchNormalizationLayer
-CLArithmeticAddition
-CLArithmeticSubtraction
-CLPixelwiseMultiplication

Change-Id: I0f3a03154f9e392279f715af656683cd0ad4cef5
Reviewed-on: http://mpd-gerrit.cambridge.arm.com/94595
Tested-by: Kaizen <jeremy.johnson+kaizengerrit@arm.com>
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>

1 files changed, 19 insertions, 4 deletions

diff --git a/arm_compute/runtime/CL/functions/CLPixelWiseMultiplication.h b/arm_compute/runtime/CL/functions/CLPixelWiseMultiplication.h
index 71754fc3f4..4fdcd750bd 100644
--- a/arm_compute/runtime/CL/functions/CLPixelWiseMultiplication.h
+++ b/arm_compute/runtime/CL/functions/CLPixelWiseMultiplication.h
@@ -37,15 +37,30 @@ class CLPixelWiseMultiplication : public ICLSimpleFunction
 public:
     /** Initialise the kernel's inputs, output and convertion policy.
      *
-     * @param[in]  input1          First tensor input. Data types supported: U8, S16, F16 or F32.
-     * @param[in]  input2          Second tensor input. Data types supported: U8, S16, F16 or F32.
-     * @param[out] output          Output tensor. Data types supported: U8(Only if both inputs are U8), S16, F16 or F32.
-     * @param[in]  scale           Scale to apply after multiplication. Must be positive.
+     * @param[in]  input1          An input tensor. Data types supported: U8/QS8/QS16/S16/F16/F32.
+     * @param[in]  input2          An input tensor. Data types supported: same as @p input1.
+     * @param[out] output          The output tensor, Data types supported: same as @p input1. Note: U8 (QS8, QS16) requires both inputs to be U8 (QS8, QS16).
+     * @param[in]  scale           Scale to apply after multiplication.
+     *                             Scale must be positive and its value must be either 1/255 or 1/2^n where n is between 0 and 15. For QS8 and QS16 scale must be 1.
      * @param[in]  overflow_policy Overflow policy. Supported overflow policies: Wrap, Saturate
      * @param[in]  rounding_policy Rounding policy. Supported rounding modes: to zero, to nearest even.
      */
     void configure(const ICLTensor *input1, const ICLTensor *input2, ICLTensor *output, float scale,
                    ConvertPolicy overflow_policy, RoundingPolicy rounding_policy);
+    /** Static function to check if given info will lead to a valid configuration of @ref CLPixelWiseMultiplication
+     *
+     * @param[in] input1          An input tensor info. Data types supported: U8/QS8/QS16/S16/F16/F32.
+     * @param[in] input2          An input tensor info. Data types supported: same as @p input1.
+     * @param[in] output          The output tensor info, Data types supported: same as @p input1. Note: U8 (QS8, QS16) requires both inputs to be U8 (QS8, QS16).
+     * @param[in] scale           Scale to apply after multiplication.
+     *                            Scale must be positive and its value must be either 1/255 or 1/2^n where n is between 0 and 15. For QS8 and QS16 scale must be 1.
+     * @param[in] overflow_policy Overflow policy. Supported overflow policies: Wrap, Saturate
+     * @param[in] rounding_policy Rounding policy. Supported rounding modes: to zero, to nearest even.
+     *
+     * @return an error status
+     */
+    static Error validate(const ITensorInfo *input1, const ITensorInfo *input2, const ITensorInfo *output, float scale,
+                          ConvertPolicy overflow_policy, RoundingPolicy rounding_policy);
 };
 }
 #endif /*__ARM_COMPUTE_CLPIXELWISEMULTIPLICATION_H__ */