COMPMID-344 Updated doxygen

Change-Id: I32f7b84daa560e460b77216add529c8fa8b327ae
diff --git a/src/core/CL/cl_kernels/depth_convert.cl b/src/core/CL/cl_kernels/depth_convert.cl
new file mode 100644
index 0000000..c8eaa95
--- /dev/null
+++ b/src/core/CL/cl_kernels/depth_convert.cl
@@ -0,0 +1,98 @@
+/*
+ * Copyright (c) 2016, 2017 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
+#define CONVERT_DOWN(x, type) CONVERT(x, type)
+#endif
+
+/** This function performs a down-scaling depth conversion.
+ *
+ * @attention 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
+ *
+ * @param[in]  in_ptr                            Pointer to the source image. Supported data types: U8, U16, S16, U32 or S32
+ * @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_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 or S32
+ * @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_offset_first_element_in_bytes The offset of the first element in the destination image
+ * @param[in]  shift                             The integer shift amount value. Supported data types: S32
+ */
+__kernel void convert_depth_down(
+    IMAGE_DECLARATION(in),
+    IMAGE_DECLARATION(out),
+    const int shift)
+{
+    // Get pixels pointer
+    Image in  = CONVERT_TO_IMAGE_STRUCT(in);
+    Image out = CONVERT_TO_IMAGE_STRUCT(out);
+
+    // Load data
+    VEC_DATA_TYPE(DATA_TYPE_IN, 16)
+    in_data = vload16(0, (__global DATA_TYPE_IN *)in.ptr);
+    vstore16(CONVERT_DOWN(in_data >> shift, VEC_DATA_TYPE(DATA_TYPE_OUT, 16)), 0, (__global DATA_TYPE_OUT *)out.ptr);
+}
+
+/** This function performs a up-scaling depth conversion.
+ *
+ * @attention 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
+ *
+ * @param[in]  in_ptr                            Pointer to the source image. Supported data types: U8, U16, S16, U32 or S32
+ * @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_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 or S32
+ * @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_offset_first_element_in_bytes The offset of the first element in the destination image
+ * @param[in]  shift                             The integer shift amount value. Supported data types: S32
+ */
+__kernel void convert_depth_up(
+    IMAGE_DECLARATION(in),
+    IMAGE_DECLARATION(out),
+    const int shift)
+{
+    // Get pixels pointer
+    Image in  = CONVERT_TO_IMAGE_STRUCT(in);
+    Image out = CONVERT_TO_IMAGE_STRUCT(out);
+
+    // Load data
+    VEC_DATA_TYPE(DATA_TYPE_OUT, 16)
+    in_data = CONVERT(vload16(0, (__global DATA_TYPE_IN *)in.ptr), VEC_DATA_TYPE(DATA_TYPE_OUT, 16));
+    vstore16(in_data << shift, 0, (__global DATA_TYPE_OUT *)out.ptr);
+}