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+/*
+ * Copyright (c) 2016-2021 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 "helpers.h"
+
+#ifdef SATURATE
+#define CONVERT_DOWN(x, type) CONVERT_SAT(x, type)
+#else /* SATURATE */
+#define CONVERT_DOWN(x, type) CONVERT(x, type)
+#endif /* SATURATE */
+
+#define CONVERT_UP(x, type) CONVERT(x, type)
+
+/** This function performs a down-casting
+ *
+ * @attention For QSYMM8_PER_CHANNEL -> QASYMM8, it is user's responsibility to keep track of the quantization info.
+ *
+ * @note The input and output data_types need to be passed at compile time using -DDATA_TYPE_IN and -DDATA_TYPE_OUT:
+ * e.g. -DDATA_TYPE_IN=uchar -DDATA_TYPE_OUT=short
+ * @note Vector size should be given as a preprocessor argument using -DVEC_SIZE=size. e.g. -DVEC_SIZE=16
+ * @note Leftover vector size has to be passed at compile time using -DVEC_SIZE_LEFTOVER. e.g. -DVEC_SIZE_LEFTOVER=3. It is defined as the remainder between the input's first dimension and VEC_SIZE
+ *
+ * @param[in] in_ptr Pointer to the source image. Supported data types: U8/S8/QSYMM8_PER_CHANNEL/U16/S16/U32/S32/F16/F32
+ * @param[in] in_stride_x Stride of the source image in X dimension (in bytes)
+ * @param[in] in_step_x in_stride_x * number of elements along X processed per workitem(in bytes)
+ * @param[in] in_stride_y Stride of the source image in Y dimension (in bytes)
+ * @param[in] in_step_y in_stride_y * number of elements along Y processed per workitem(in bytes)
+ * @param[in] in_stride_z Stride of the source tensor in Z dimension (in bytes)
+ * @param[in] in_step_z in_stride_z * number of elements along Z processed per workitem(in bytes)
+ * @param[in] in_offset_first_element_in_bytes The offset of the first element in the source image
+ * @param[out] out_ptr Pointer to the destination image. Supported data types: U8/S8/QASYMM8/U16/S16/U32/S32/F16/F32
+ * @param[in] out_stride_x Stride of the destination image in X dimension (in bytes)
+ * @param[in] out_step_x out_stride_x * number of elements along X processed per workitem(in bytes)
+ * @param[in] out_stride_y Stride of the destination image in Y dimension (in bytes)
+ * @param[in] out_step_y out_stride_y * number of elements along Y processed per workitem(in bytes)
+ * @param[in] out_stride_z Stride of the source tensor in Z dimension (in bytes)
+ * @param[in] out_step_z out_stride_z * number of elements along Z processed per workitem(in bytes)
+ * @param[in] out_offset_first_element_in_bytes The offset of the first element in the destination image
+ */
+__kernel void cast_down(
+ TENSOR3D_DECLARATION(in),
+ TENSOR3D_DECLARATION(out))
+{
+ int x_offs = max((int)(get_global_id(0) * VEC_SIZE - (VEC_SIZE - VEC_SIZE_LEFTOVER) % VEC_SIZE), 0);
+
+ __global uchar *in_addr = in_ptr + in_offset_first_element_in_bytes + sizeof(DATA_TYPE_IN) * x_offs + get_global_id(1) * in_stride_y + get_global_id(2) * in_stride_z;
+ __global uchar *out_addr = out_ptr + out_offset_first_element_in_bytes + sizeof(DATA_TYPE_OUT) * x_offs + get_global_id(1) * out_stride_y + get_global_id(2) * out_stride_z;
+
+ // Load data
+ VEC_DATA_TYPE(DATA_TYPE_IN, VEC_SIZE)
+ in_data = VLOAD(VEC_SIZE)(0, (__global DATA_TYPE_IN *)in_addr);
+
+#if defined(IS_DATA_TYPE_QUANTIZED)
+ in_data ^= (VEC_DATA_TYPE(DATA_TYPE_IN, VEC_SIZE))0x80;
+#endif // defined(IS_DATA_TYPE_QUANTIZED)
+
+#if defined(IS_DATA_TYPE_FLOAT)
+ VEC_DATA_TYPE(DATA_TYPE_OUT, VEC_SIZE)
+ res0 = CONVERT_DOWN(in_data, VEC_DATA_TYPE(DATA_TYPE_OUT, VEC_SIZE));
+ STORE_VECTOR_SELECT(res, DATA_TYPE_OUT, out_addr, VEC_SIZE, VEC_SIZE_LEFTOVER, VEC_SIZE_LEFTOVER != 0 && get_global_id(0) == 0)
+#else /* defined(IS_DATA_TYPE_FLOAT) */
+ VEC_DATA_TYPE(DATA_TYPE_OUT, VEC_SIZE)
+ res0 = CONVERT_DOWN(in_data, VEC_DATA_TYPE(DATA_TYPE_OUT, VEC_SIZE));
+ STORE_VECTOR_SELECT(res, DATA_TYPE_OUT, out_addr, VEC_SIZE, VEC_SIZE_LEFTOVER, VEC_SIZE_LEFTOVER != 0 && get_global_id(0) == 0)
+#endif /* defined(IS_DATA_TYPE_FLOAT) */
+}
+
+/** This function performs a up-casting
+ *
+ * @note The input and output data_types need to be passed at compile time using -DDATA_TYPE_IN and -DDATA_TYPE_OUT:
+ * e.g. -DDATA_TYPE_IN=uchar -DDATA_TYPE_OUT=short
+ * @note Vector size should be given as a preprocessor argument using -DVEC_SIZE=size. e.g. -DVEC_SIZE=16
+ * @note Leftover vector size has to be passed at compile time using -DVEC_SIZE_LEFTOVER. e.g. -DVEC_SIZE_LEFTOVER=3. It is defined as the remainder between the input's first dimension and VEC_SIZE
+ *
+ * @param[in] in_ptr Pointer to the source image. Supported data types: U8/S8/U16/S16/U32/S32/F16/F32
+ * @param[in] in_stride_x Stride of the source image in X dimension (in bytes)
+ * @param[in] in_step_x in_stride_x * number of elements along X processed per workitem(in bytes)
+ * @param[in] in_stride_y Stride of the source image in Y dimension (in bytes)
+ * @param[in] in_step_y in_stride_y * number of elements along Y processed per workitem(in bytes)
+ * @param[in] in_stride_z Stride of the source tensor in Z dimension (in bytes)
+ * @param[in] in_step_z in_stride_z * number of elements along Z processed per workitem(in bytes)
+ * @param[in] in_offset_first_element_in_bytes The offset of the first element in the source image
+ * @param[out] out_ptr Pointer to the destination image. Supported data types: U8/U16/S16/U32/S32/F16/F32
+ * @param[in] out_stride_x Stride of the destination image in X dimension (in bytes)
+ * @param[in] out_step_x out_stride_x * number of elements along X processed per workitem(in bytes)
+ * @param[in] out_stride_y Stride of the destination image in Y dimension (in bytes)
+ * @param[in] out_step_y out_stride_y * number of elements along Y processed per workitem(in bytes)
+ * @param[in] out_stride_z Stride of the source tensor in Z dimension (in bytes)
+ * @param[in] out_step_z out_stride_z * number of elements along Z processed per workitem(in bytes)
+ * @param[in] out_offset_first_element_in_bytes The offset of the first element in the destination image
+ */
+__kernel void cast_up(
+ TENSOR3D_DECLARATION(in),
+ TENSOR3D_DECLARATION(out))
+{
+ int x_offs = max((int)(get_global_id(0) * VEC_SIZE - (VEC_SIZE - VEC_SIZE_LEFTOVER) % VEC_SIZE), 0);
+
+ __global uchar *in_addr = in_ptr + in_offset_first_element_in_bytes + sizeof(DATA_TYPE_IN) * x_offs + get_global_id(1) * in_stride_y + get_global_id(2) * in_stride_z;
+ __global uchar *out_addr = out_ptr + out_offset_first_element_in_bytes + sizeof(DATA_TYPE_OUT) * x_offs + get_global_id(1) * out_stride_y + get_global_id(2) * out_stride_z;
+
+ // Load data
+ VEC_DATA_TYPE(DATA_TYPE_IN, VEC_SIZE)
+ in_data = VLOAD(VEC_SIZE)(0, (__global DATA_TYPE_IN *)in_addr);
+
+#if defined(IS_DATA_TYPE_FLOAT)
+ VEC_DATA_TYPE(DATA_TYPE_OUT, VEC_SIZE)
+ res0 = CONVERT_UP(in_data, VEC_DATA_TYPE(DATA_TYPE_OUT, VEC_SIZE));
+ STORE_VECTOR_SELECT(res, DATA_TYPE_OUT, out_addr, VEC_SIZE, VEC_SIZE_LEFTOVER, VEC_SIZE_LEFTOVER != 0 && get_global_id(0) == 0)
+#else /* defined(IS_DATA_TYPE_FLOAT) */
+ VEC_DATA_TYPE(DATA_TYPE_OUT, VEC_SIZE)
+ res0 = CONVERT_UP(in_data, VEC_DATA_TYPE(DATA_TYPE_OUT, VEC_SIZE));
+ STORE_VECTOR_SELECT(res, DATA_TYPE_OUT, out_addr, VEC_SIZE, VEC_SIZE_LEFTOVER, VEC_SIZE_LEFTOVER != 0 && get_global_id(0) == 0)
+#endif /* defined(IS_DATA_TYPE_FLOAT) */
+}
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