COMPMID-582: Add validation to channel_extract kernels.
Change-Id: I5022d02f06f9d849dad76e3d9b8e48632c236429
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/121191
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
Tested-by: Jenkins <bsgcomp@arm.com>
diff --git a/tests/validation/reference/ChannelExtract.cpp b/tests/validation/reference/ChannelExtract.cpp
new file mode 100644
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+++ b/tests/validation/reference/ChannelExtract.cpp
@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 2017-2018 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 "ChannelExtract.h"
+
+#include "arm_compute/core/Types.h"
+#include "tests/validation/FixedPoint.h"
+#include "tests/validation/Helpers.h"
+
+namespace arm_compute
+{
+namespace test
+{
+namespace validation
+{
+namespace reference
+{
+template <typename T>
+SimpleTensor<uint8_t> channel_extract(const TensorShape &shape, const std::vector<SimpleTensor<T>> &tensor_planes, Format format, Channel channel)
+{
+ // Find plane and channel index
+ const unsigned int plane_idx = plane_idx_from_channel(format, channel);
+ const unsigned int channel_idx = channel_idx_from_format(format, channel);
+
+ // Create dst and get src tensor
+ SimpleTensor<T> src = tensor_planes[plane_idx];
+ SimpleTensor<T> dst{ calculate_subsampled_shape(shape, format, channel), Format::U8 };
+
+ // Single planar formats with subsampling require a double horizontal step
+ const int step_x = ((Format::YUYV422 == format || Format::UYVY422 == format) && Channel::Y != channel) ? 2 : 1;
+ const int width = dst.shape().x();
+ const int height = dst.shape().y();
+
+ // Loop over each pixel and extract channel
+ for(int y = 0; y < height; ++y)
+ {
+ for(int x = 0; x < width; ++x)
+ {
+ const Coordinates src_coord{ x * step_x, y };
+ const Coordinates dst_coord{ x, y };
+
+ const auto *src_pixel = reinterpret_cast<const T *>(src(src_coord));
+ auto *dst_pixel = reinterpret_cast<T *>(dst(dst_coord));
+
+ dst_pixel[0] = src_pixel[channel_idx];
+ }
+ }
+
+ return dst;
+}
+
+template SimpleTensor<uint8_t> channel_extract(const TensorShape &shape, const std::vector<SimpleTensor<uint8_t>> &tensor_planes, Format format, Channel channel);
+} // namespace reference
+} // namespace validation
+} // namespace test
+} // namespace arm_compute