COMPMID-1579: Add support for ChannelShuffle operator in NEON

Change-Id: I6d5f91579850906e1eb973ff6c5612195255e631

1 files changed, 61 insertions, 0 deletions

diff --git a/arm_compute/runtime/NEON/functions/NEChannelShuffleLayer.h b/arm_compute/runtime/NEON/functions/NEChannelShuffleLayer.h
new file mode 100644
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+++ b/arm_compute/runtime/NEON/functions/NEChannelShuffleLayer.h
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+/*
+ * Copyright (c) 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.
+ */
+#ifndef __ARM_COMPUTE_NECHANNELSHUFFLELAYER_H__
+#define __ARM_COMPUTE_NECHANNELSHUFFLELAYER_H__
+
+#include "arm_compute/runtime/NEON/INESimpleFunction.h"
+
+namespace arm_compute
+{
+// Forward declarations
+class ITensor;
+
+/** Basic function to run @ref NEChannelShuffleLayerKernel
+ *
+ * @note The function performs a channel shuffle operation on the input tensor. Given NCHW tensor with group G, it will
+ * first divide the channels into G groups, C = (G * C'), and perform a transpose of the channel, which gives C = (C' * G).
+ * for more details see: https://arxiv.org/pdf/1707.01083.pdf
+ */
+class NEChannelShuffleLayer : public INESimpleFunction
+{
+public:
+    /** Initialize the function
+     *
+     * @param[in]  input      Input tensor. Data types supported: U8/S8/QASYMM8/U16/S16/F16/U32/S32/F32
+     * @param[out] output     Output tensor. Data type supported: Same as @p input
+     * @param[in]  num_groups Number of groups. Must be greater than 1 and the number of channels of the tensors must be a multiple of the number of groups.
+     */
+    void configure(const ITensor *input, ITensor *output, unsigned int num_groups);
+    /** Static function to check if given info will lead to a valid configuration of @ref NEChannelShuffleLayer
+     *
+     * @param[in]  input      Input tensor. Data types supported: U8/S8/QASYMM8/U16/S16/F16/U32/S32/F32
+     * @param[out] output     Output tensor. Data type supported: Same as @p input
+     * @param[in]  num_groups Number of groups. Must be greater than 1 and the number of channels of the tensors must be a multiple of the number of groups.
+     *
+     * @return a status
+     */
+    static Status validate(const ITensorInfo *input, const ITensorInfo *output, unsigned int num_groups);
+};
+} // namespace arm_compute
+#endif /* __ARM_COMPUTE_NECHANNELSHUFFLELAYER_H__ */