Port OpenCL Scale to new API

Partially resolves: COMPMID-4190

Change-Id: I680dd80fcbe4e7568511792c60a725b2646fa6ff
Signed-off-by: Manuel Bottini <manuel.bottini@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/5197
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: TeresaARM <teresa.charlinreyes@arm.com>
Reviewed-by: Michele Di Giorgio <michele.digiorgio@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
diff --git a/src/runtime/gpu/cl/operators/ClScale.cpp b/src/runtime/gpu/cl/operators/ClScale.cpp
new file mode 100644
index 0000000..4730c8a
--- /dev/null
+++ b/src/runtime/gpu/cl/operators/ClScale.cpp
@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 2021 Arm Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#include "src/runtime/gpu/cl/operators/ClScale.h"
+
+#include "arm_compute/core/Error.h"
+#include "arm_compute/runtime/CL/CLScheduler.h"
+#include "src/core/CL/kernels/CLFillBorderKernel.h"
+#include "src/core/gpu/cl/ClCompileContext.h"
+#include "src/core/gpu/cl/kernels/ClScaleKernel.h"
+
+namespace arm_compute
+{
+namespace opencl
+{
+void ClScale::configure(const CLCompileContext &compile_context, ITensorInfo *src, ITensorInfo *dst, const ScaleKernelInfo &info)
+{
+    ARM_COMPUTE_ERROR_ON_NULLPTR(src);
+    // Configure Scale kernel
+    auto k = std::make_unique<kernels::ClScaleKernel>();
+    k->set_target(CLScheduler::get().target());
+    k->configure(compile_context, src, dst, info);
+    _kernel = std::move(k);
+    if(!_kernel->border_size().empty())
+    {
+        auto b = std::make_unique<CLFillBorderKernel>();
+        b->configure(compile_context, src, _kernel->border_size(), info.border_mode, info.constant_border_value);
+        _border_handler = std::move(b);
+    }
+    // Tune kernel
+    CLScheduler::get().tune_kernel_static(*_kernel);
+}
+
+Status ClScale::validate(const ITensorInfo *src, const ITensorInfo *dst, const ScaleKernelInfo &info)
+{
+    return kernels::ClScaleKernel::validate(src, dst, info);
+}
+
+void ClScale::run(ITensorPack &tensors)
+{
+    ARM_COMPUTE_ERROR_ON_MSG(tensors.empty(), "No inputs provided");
+    if(!_kernel->border_size().empty())
+    {
+        CLScheduler::get().enqueue_op(*_border_handler.get(), tensors, false);
+    }
+    CLScheduler::get().enqueue_op(*_kernel.get(), tensors);
+}
+} // namespace opencl
+} // namespace arm_compute
\ No newline at end of file