diff options
Diffstat (limited to 'src/core/CL/cl_kernels/sobel_filter.cl')
| -rw-r--r-- | src/core/CL/cl_kernels/sobel_filter.cl | 541 |
1 files changed, 0 insertions, 541 deletions
diff --git a/src/core/CL/cl_kernels/sobel_filter.cl b/src/core/CL/cl_kernels/sobel_filter.cl deleted file mode 100644 index 7983734fc4..0000000000 --- a/src/core/CL/cl_kernels/sobel_filter.cl +++ /dev/null @@ -1,541 +0,0 @@ -/* - * 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" - -/***********************************************/ -/* Begin implementation of Sobel3x3 filter */ -/***********************************************/ - -/** This OpenCL kernel that computes a Sobel3x3 filter. - * - * @attention To enable computation of the X gradient -DGRAD_X must be passed at compile time, while computation of the Y gradient - * is performed when -DGRAD_Y is used. You can use both when computation of both gradients is required. - * - * @param[in] src_ptr Pointer to the source image. Supported data types: U8 - * @param[in] src_stride_x Stride of the source image in X dimension (in bytes) - * @param[in] src_step_x src_stride_x * number of elements along X processed per workitem(in bytes) - * @param[in] src_stride_y Stride of the source image in Y dimension (in bytes) - * @param[in] src_step_y src_stride_y * number of elements along Y processed per workitem(in bytes) - * @param[in] src_offset_first_element_in_bytes The offset of the first element in the source image - * @param[out] dst_gx_ptr Pointer to the destination image. Supported data types: S16 - * @param[in] dst_gx_stride_x Stride of the destination image in X dimension (in bytes) - * @param[in] dst_gx_step_x dst_gx_stride_x * number of elements along X processed per workitem(in bytes) - * @param[in] dst_gx_stride_y Stride of the destination image in Y dimension (in bytes) - * @param[in] dst_gx_step_y dst_gx_stride_y * number of elements along Y processed per workitem(in bytes) - * @param[in] dst_gx_offset_first_element_in_bytes The offset of the first element in the destination image - * @param[out] dst_gy_ptr Pointer to the destination image. Supported data types: S16 - * @param[in] dst_gy_stride_x Stride of the destination image in X dimension (in bytes) - * @param[in] dst_gy_step_x dst_gy_stride_x * number of elements along X processed per workitem(in bytes) - * @param[in] dst_gy_stride_y Stride of the destination image in Y dimension (in bytes) - * @param[in] dst_gy_step_y dst_gy_stride_y * number of elements along Y processed per workitem(in bytes) - * @param[in] dst_gy_offset_first_element_in_bytes The offset of the first element in the destination image - */ -__kernel void sobel3x3( - IMAGE_DECLARATION(src) -#ifdef GRAD_X - , - IMAGE_DECLARATION(dst_gx) -#endif /* GRAD_X */ -#ifdef GRAD_Y - , - IMAGE_DECLARATION(dst_gy) -#endif /* GRAD_Y */ -) -{ - Image src = CONVERT_TO_IMAGE_STRUCT(src); -#ifdef GRAD_X - Image dst_gx = CONVERT_TO_IMAGE_STRUCT(dst_gx); -#endif /* GRAD_X */ -#ifdef GRAD_Y - Image dst_gy = CONVERT_TO_IMAGE_STRUCT(dst_gy); -#endif /* GRAD_Y */ - - // Output pixels -#ifdef GRAD_X - short8 gx = (short8)0; -#endif /* GRAD_X */ -#ifdef GRAD_Y - short8 gy = (short8)0; -#endif /* GRAD_Y */ - - // Row0 - uchar16 temp = vload16(0, offset(&src, -1, -1)); - short8 left = convert_short8(temp.s01234567); - short8 middle = convert_short8(temp.s12345678); - short8 right = convert_short8(temp.s23456789); -#ifdef GRAD_X - gx += left * (short8)(-1); - gx += right * (short8)(+1); -#endif /* GRAD_X */ -#ifdef GRAD_Y - gy += left * (short8)(-1); - gy += middle * (short8)(-2); - gy += right * (short8)(-1); -#endif /* GRAD_Y */ - - // Row1 - temp = vload16(0, offset(&src, -1, 0)); - left = convert_short8(temp.s01234567); - right = convert_short8(temp.s23456789); -#ifdef GRAD_X - gx += left * (short8)(-2); - gx += right * (short8)(+2); -#endif /* GRAD_X */ - - // Row2 - temp = vload16(0, offset(&src, -1, 1)); - left = convert_short8(temp.s01234567); - middle = convert_short8(temp.s12345678); - right = convert_short8(temp.s23456789); -#ifdef GRAD_X - gx += left * (short8)(-1); - gx += right * (short8)(+1); -#endif /* GRAD_X */ -#ifdef GRAD_Y - gy += left * (short8)(+1); - gy += middle * (short8)(+2); - gy += right * (short8)(+1); -#endif /* GRAD_Y */ - - // Store results -#ifdef GRAD_X - vstore8(gx, 0, ((__global short *)dst_gx.ptr)); -#endif /* GRAD_X */ -#ifdef GRAD_Y - vstore8(gy, 0, ((__global short *)dst_gy.ptr)); -#endif /* GRAD_Y */ -} - -/**********************************************/ -/* End implementation of Sobel3x3 filter */ -/**********************************************/ - -/***********************************************/ -/* Begin implementation of Sobel5x5 filter */ -/***********************************************/ - -/** Compute a 1D horizontal sobel filter 1x5 for 8 bytes assuming the input is made of 1 channel of 1 byte (i.e 8 pixels). - * - * @param[in] src Pointer to source image. - * @param[in] left1_coeff_gx Weight of the most left pixel for gx - * @param[in] left2_coeff_gx Weight of the left pixel for gx - * @param[in] middle_coeff_gx Weight of the middle pixel for gx - * @param[in] right1_coeff_gx Weight of the right pixel for gx - * @param[in] right2_coeff_gx Weight of the most right pixel for gx - * @param[in] left1_coeff_gy Weight of the most left pixel for gy - * @param[in] left2_coeff_gy Weight of the left pixel for gy - * @param[in] middle_coeff_gy Weight of the middle pixel for gy - * @param[in] right1_coeff_gy Weight of the right pixel for gy - * @param[in] right2_coeff_gy Weight of the most right pixel for gy - * - * @return a short16 containing short8 gx and short8 gy values. - */ -short16 sobel1x5( - Image *src, - const short left1_coeff_gx, - const short left2_coeff_gx, - const short middle_coeff_gx, - const short right1_coeff_gx, - const short right2_coeff_gx, - const short left1_coeff_gy, - const short left2_coeff_gy, - const short middle_coeff_gy, - const short right1_coeff_gy, - const short right2_coeff_gy) -{ - uchar16 temp = vload16(0, offset(src, -2, 0)); - short8 gx = 0; - short8 gy = 0; - short8 val; - - val = convert_short8(temp.s01234567); - gx += val * (short8)left1_coeff_gx; - gy += val * (short8)left1_coeff_gy; - - val = convert_short8(temp.s12345678); - gx += val * (short8)left2_coeff_gx; - gy += val * (short8)left2_coeff_gy; - - val = convert_short8(temp.s23456789); - gx += val * (short8)middle_coeff_gx; - gy += val * (short8)middle_coeff_gy; - - val = convert_short8(temp.s3456789a); - gx += val * (short8)right1_coeff_gx; - gy += val * (short8)right1_coeff_gy; - - val = convert_short8(temp.s456789ab); - gx += val * (short8)right2_coeff_gx; - gy += val * (short8)right2_coeff_gy; - - return (short16)(gx, gy); -} - -/** Compute a 1D vertical sobel filter 5x1 for 8 bytes assuming the input is made of 1 channel of 1 byte (i.e 8 pixels). - * - * @param[in] src Pointer to source image. - * @param[in] up1_coeff Weight of the most up pixel - * @param[in] up2_coeff Weight of the up pixel - * @param[in] middle_coeff Weight of the middle pixel - * @param[in] down1_coeff Weight of the down pixel - * @param[in] down2_coeff Weight of the most down pixel - * - * @return a short8 containing 8 convoluted values. - */ -short8 sobel5x1( - Image *src, - const short up1_coeff, - const short up2_coeff, - const short middle_coeff, - const short down1_coeff, - const short down2_coeff) -{ - short8 val; - short8 out = (short8)0; - - val = vload8(0, (__global short *)offset(src, 0, -2)); - out += val * (short8)up1_coeff; - - val = vload8(0, (__global short *)offset(src, 0, -1)); - out += val * (short8)up2_coeff; - - val = vload8(0, (__global short *)offset(src, 0, 0)); - out += val * (short8)middle_coeff; - - val = vload8(0, (__global short *)offset(src, 0, 1)); - out += val * (short8)down1_coeff; - - val = vload8(0, (__global short *)offset(src, 0, 2)); - out += val * (short8)down2_coeff; - - return (short8)(out); -} - -/** Apply a 1x5 sobel matrix to a single channel U8 input image and output two temporary channel S16 images. - * - * @attention To enable computation of the X gradient -DGRAD_X must be passed at compile time, while computation of the Y gradient - * is performed when -DGRAD_Y is used. You can use both when computation of both gradients is required. - * - * @param[in] src_ptr Pointer to the source image.. Supported data types: U8 - * @param[in] src_stride_x Stride of the source image in X dimension (in bytes) - * @param[in] src_step_x src_stride_x * number of elements along X processed per workitem(in bytes) - * @param[in] src_stride_y Stride of the source image in Y dimension (in bytes) - * @param[in] src_step_y src_stride_y * number of elements along Y processed per workitem(in bytes) - * @param[in] src_offset_first_element_in_bytes The offset of the first element in the source image - * @param[out] dst_gx_ptr Pointer to the destination image.. Supported data types: S16 - * @param[in] dst_gx_stride_x Stride of the destination image in X dimension (in bytes) - * @param[in] dst_gx_step_x dst_gx_stride_x * number of elements along X processed per workitem(in bytes) - * @param[in] dst_gx_stride_y Stride of the destination image in Y dimension (in bytes) - * @param[in] dst_gx_step_y dst_gx_stride_y * number of elements along Y processed per workitem(in bytes) - * @param[in] dst_gx_offset_first_element_in_bytes The offset of the first element in the destination image - * @param[out] dst_gy_ptr Pointer to the destination image. Supported data types: S16 - * @param[in] dst_gy_stride_x Stride of the destination image in X dimension (in bytes) - * @param[in] dst_gy_step_x dst_gy_stride_x * number of elements along X processed per workitem(in bytes) - * @param[in] dst_gy_stride_y Stride of the destination image in Y dimension (in bytes) - * @param[in] dst_gy_step_y dst_gy_stride_y * number of elements along Y processed per workitem(in bytes) - * @param[in] dst_gy_offset_first_element_in_bytes The offset of the first element in the destination image - */ -__kernel void sobel_separable1x5( - IMAGE_DECLARATION(src) -#ifdef GRAD_X - , - IMAGE_DECLARATION(dst_gx) -#endif /* GRAD_X */ -#ifdef GRAD_Y - , - IMAGE_DECLARATION(dst_gy) -#endif /* GRAD_Y */ -) -{ - Image src = CONVERT_TO_IMAGE_STRUCT(src); -#ifdef GRAD_X - Image dst_gx = CONVERT_TO_IMAGE_STRUCT(dst_gx); -#endif /* GRAD_X */ -#ifdef GRAD_Y - Image dst_gy = CONVERT_TO_IMAGE_STRUCT(dst_gy); -#endif /* GRAD_Y */ - - // Output pixels - short16 gx_gy = sobel1x5(&src, - -1, -2, 0, 2, 1, - 1, 4, 6, 4, 1); - - // Store result in dst -#ifdef GRAD_X - vstore8(gx_gy.s01234567, 0, ((__global short *)dst_gx.ptr)); -#endif /* GRAD_X */ -#ifdef GRAD_Y - vstore8(gx_gy.s89ABCDEF, 0, ((__global short *)dst_gy.ptr)); -#endif /* GRAD_Y */ -} - -/** Apply a 5x1 convolution matrix to two single channel S16 input temporary images - * and output two single channel S16 images. - * - * @attention To enable computation of the X gradient -DGRAD_X must be passed at compile time, while computation of the Y gradient - * is performed when -DGRAD_Y is used. You can use both when computation of both gradients is required. - * - * @param[in] src_x_ptr Pointer to the source image.. Supported data types: S16 - * @param[in] src_x_stride_x Stride of the source image in X dimension (in bytes) - * @param[in] src_x_step_x src_x_stride_x * number of elements along X processed per workitem(in bytes) - * @param[in] src_x_stride_y Stride of the source image in Y dimension (in bytes) - * @param[in] src_x_step_y src_x_stride_y * number of elements along Y processed per workitem(in bytes) - * @param[in] src_x_offset_first_element_in_bytes The offset of the first element in the source image - * @param[out] dst_gx_ptr Pointer to the destination image. Supported data types: S16 - * @param[in] dst_gx_stride_x Stride of the destination image in X dimension (in bytes) - * @param[in] dst_gx_step_x dst_gx_stride_x * number of elements along X processed per workitem(in bytes) - * @param[in] dst_gx_stride_y Stride of the destination image in Y dimension (in bytes) - * @param[in] dst_gx_step_y dst_gx_stride_y * number of elements along Y processed per workitem(in bytes) - * @param[in] dst_gx_offset_first_element_in_bytes The offset of the first element in the destination image - * @param[in] src_y_ptr Pointer to the source image. Supported data types: S16 - * @param[in] src_y_stride_x Stride of the source image in X dimension (in bytes) - * @param[in] src_y_step_x src_y_stride_x * number of elements along X processed per workitem(in bytes) - * @param[in] src_y_stride_y Stride of the source image in Y dimension (in bytes) - * @param[in] src_y_step_y src_y_stride_y * number of elements along Y processed per workitem(in bytes) - * @param[in] src_y_offset_first_element_in_bytes The offset of the first element in the source image - * @param[out] dst_gy_ptr Pointer to the destination image. Supported data types: S16 - * @param[in] dst_gy_stride_x Stride of the destination image in X dimension (in bytes) - * @param[in] dst_gy_step_x dst_gy_stride_x * number of elements along X processed per workitem(in bytes) - * @param[in] dst_gy_stride_y Stride of the destination image in Y dimension (in bytes) - * @param[in] dst_gy_step_y dst_gy_stride_y * number of elements along Y processed per workitem(in bytes) - * @param[in] dst_gy_offset_first_element_in_bytes The offset of the first element in the destination image - * @param[in] dummy Dummy parameter to easy conditional inclusion - */ -__kernel void sobel_separable5x1( -#ifdef GRAD_X - IMAGE_DECLARATION(src_x), - IMAGE_DECLARATION(dst_gx), -#endif /* GRAD_X */ -#ifdef GRAD_Y - IMAGE_DECLARATION(src_y), - IMAGE_DECLARATION(dst_gy), -#endif /* GRAD_Y */ - int dummy) -{ -#ifdef GRAD_X - Image src_x = CONVERT_TO_IMAGE_STRUCT(src_x); - Image dst_gx = CONVERT_TO_IMAGE_STRUCT(dst_gx); -#endif /* GRAD_X */ -#ifdef GRAD_Y - Image src_y = CONVERT_TO_IMAGE_STRUCT(src_y); - Image dst_gy = CONVERT_TO_IMAGE_STRUCT(dst_gy); -#endif /* GRAD_Y */ - -#ifdef GRAD_X - short8 gx = sobel5x1(&src_x, - 1, 4, 6, 4, 1); - vstore8(gx, 0, ((__global short *)dst_gx.ptr)); -#endif /* GRAD_X */ -#ifdef GRAD_Y - short8 gy = sobel5x1(&src_y, - -1, -2, 0, 2, 1); - vstore8(gy, 0, ((__global short *)dst_gy.ptr)); -#endif /* GRAD_Y */ -} - -/**********************************************/ -/* End implementation of Sobel5x5 filter */ -/**********************************************/ - -/***********************************************/ -/* Begin implementation of Sobel7x7 filter */ -/***********************************************/ - -/* Sobel 1x7 horizontal X / 7x1 vertical Y coefficients */ -#define X0 -1 -#define X1 -4 -#define X2 -5 -#define X3 0 -#define X4 5 -#define X5 4 -#define X6 1 - -/* Sobel 1x7 vertical X / 7x1 horizontal Y coefficients */ -#define Y0 1 -#define Y1 6 -#define Y2 15 -#define Y3 20 -#define Y4 15 -#define Y5 6 -#define Y6 1 - -/* Calculates single horizontal iteration. */ -#define SOBEL1x1_HOR(src, gx, gy, idx) \ - { \ - int8 val = convert_int8(vload8(0, offset(src, idx - 3, 0))); \ - gx += val * X##idx; \ - gy += val * Y##idx; \ - } - -/* Calculates single vertical iteration. */ -#define SOBEL1x1_VERT(src, g, direction, idx) \ - { \ - int8 val = vload8(0, (__global int *)offset(src, 0, idx - 3)); \ - g += val * (int8)direction##idx; \ - } - -/* Calculates a 1x7 horizontal iteration. */ -#define SOBEL1x7(ptr, gx, gy) \ - SOBEL1x1_HOR(ptr, gx, gy, 0) \ - SOBEL1x1_HOR(ptr, gx, gy, 1) \ - SOBEL1x1_HOR(ptr, gx, gy, 2) \ - SOBEL1x1_HOR(ptr, gx, gy, 3) \ - SOBEL1x1_HOR(ptr, gx, gy, 4) \ - SOBEL1x1_HOR(ptr, gx, gy, 5) \ - SOBEL1x1_HOR(ptr, gx, gy, 6) - -/* Calculates a 7x1 vertical iteration. */ -#define SOBEL7x1(ptr, g, direction) \ - SOBEL1x1_VERT(ptr, g, direction, 0) \ - SOBEL1x1_VERT(ptr, g, direction, 1) \ - SOBEL1x1_VERT(ptr, g, direction, 2) \ - SOBEL1x1_VERT(ptr, g, direction, 3) \ - SOBEL1x1_VERT(ptr, g, direction, 4) \ - SOBEL1x1_VERT(ptr, g, direction, 5) \ - SOBEL1x1_VERT(ptr, g, direction, 6) - -/** Apply a 1x7 sobel matrix to a single channel U8 input image and output two temporary channel S16 images and leave the borders undefined. - * - * @attention To enable computation of the X gradient -DGRAD_X must be passed at compile time, while computation of the Y gradient - * is performed when -DGRAD_Y is used. You can use both when computation of both gradients is required. - * - * @param[in] src_ptr Pointer to the source image. Supported data types: U8 - * @param[in] src_stride_x Stride of the source image in X dimension (in bytes) - * @param[in] src_step_x src_stride_x * number of elements along X processed per workitem(in bytes) - * @param[in] src_stride_y Stride of the source image in Y dimension (in bytes) - * @param[in] src_step_y src_stride_y * number of elements along Y processed per workitem(in bytes) - * @param[in] src_offset_first_element_in_bytes The offset of the first element in the source image - * @param[out] dst_gx_ptr Pointer to the destination image. Supported data types: S32 - * @param[in] dst_gx_stride_x Stride of the destination image in X dimension (in bytes) - * @param[in] dst_gx_step_x dst_gx_stride_x * number of elements along X processed per workitem(in bytes) - * @param[in] dst_gx_stride_y Stride of the destination image in Y dimension (in bytes) - * @param[in] dst_gx_step_y dst_gx_stride_y * number of elements along Y processed per workitem(in bytes) - * @param[in] dst_gx_offset_first_element_in_bytes The offset of the first element in the destination image - * @param[out] dst_gy_ptr Pointer to the destination image. Supported data types: S32 - * @param[in] dst_gy_stride_x Stride of the destination image in X dimension (in bytes) - * @param[in] dst_gy_step_x dst_gy_stride_x * number of elements along X processed per workitem(in bytes) - * @param[in] dst_gy_stride_y Stride of the destination image in Y dimension (in bytes) - * @param[in] dst_gy_step_y dst_gy_stride_y * number of elements along Y processed per workitem(in bytes) - * @param[in] dst_gy_offset_first_element_in_bytes The offset of the first element in the destination image - */ -__kernel void sobel_separable1x7( - IMAGE_DECLARATION(src) -#ifdef GRAD_X - , - IMAGE_DECLARATION(dst_gx) -#endif /* GRAD_X */ -#ifdef GRAD_Y - , - IMAGE_DECLARATION(dst_gy) -#endif /* GRAD_Y */ -) -{ - Image src = CONVERT_TO_IMAGE_STRUCT(src); -#ifdef GRAD_X - Image dst_gx = CONVERT_TO_IMAGE_STRUCT(dst_gx); -#endif /* GRAD_X */ -#ifdef GRAD_Y - Image dst_gy = CONVERT_TO_IMAGE_STRUCT(dst_gy); -#endif /* GRAD_Y */ - int8 gx = (int8)0; - int8 gy = (int8)0; - - SOBEL1x7(&src, gx, gy); - - // Store result in dst -#ifdef GRAD_X - vstore8(gx, 0, ((__global int *)dst_gx.ptr)); -#endif /* GRAD_X */ -#ifdef GRAD_Y - vstore8(gy, 0, ((__global int *)dst_gy.ptr)); -#endif /* GRAD_Y */ -} - -/** Apply a 7x1 convolution matrix to two single channel S16 input temporary images and output two single channel S16 images and leave the borders undefined. - * - * @attention To enable computation of the X gradient -DGRAD_X must be passed at compile time, while computation of the Y gradient - * is performed when -DGRAD_Y is used. You can use both when computation of both gradients is required. - * - * @param[in] src_x_ptr Pointer to the source image. Supported data types: S32 - * @param[in] src_x_stride_x Stride of the source image in X dimension (in bytes) - * @param[in] src_x_step_x src_x_stride_x * number of elements along X processed per workitem(in bytes) - * @param[in] src_x_stride_y Stride of the source image in Y dimension (in bytes) - * @param[in] src_x_step_y src_x_stride_y * number of elements along Y processed per workitem(in bytes) - * @param[in] src_x_offset_first_element_in_bytes The offset of the first element in the source image - * @param[out] dst_gx_ptr Pointer to the destination image. Supported data types: S16 - * @param[in] dst_gx_stride_x Stride of the destination image in X dimension (in bytes) - * @param[in] dst_gx_step_x dst_gx_stride_x * number of elements along X processed per workitem(in bytes) - * @param[in] dst_gx_stride_y Stride of the destination image in Y dimension (in bytes) - * @param[in] dst_gx_step_y dst_gx_stride_y * number of elements along Y processed per workitem(in bytes) - * @param[in] dst_gx_offset_first_element_in_bytes The offset of the first element in the destination image - * @param[in] src_y_ptr Pointer to the source image. Supported data types: S32 - * @param[in] src_y_stride_x Stride of the source image in X dimension (in bytes) - * @param[in] src_y_step_x src_y_stride_x * number of elements along X processed per workitem(in bytes) - * @param[in] src_y_stride_y Stride of the source image in Y dimension (in bytes) - * @param[in] src_y_step_y src_y_stride_y * number of elements along Y processed per workitem(in bytes) - * @param[in] src_y_offset_first_element_in_bytes The offset of the first element in the source image - * @param[out] dst_gy_ptr Pointer to the destination image. Supported data types: S16 - * @param[in] dst_gy_stride_x Stride of the destination image in X dimension (in bytes) - * @param[in] dst_gy_step_x dst_gy_stride_x * number of elements along X processed per workitem(in bytes) - * @param[in] dst_gy_stride_y Stride of the destination image in Y dimension (in bytes) - * @param[in] dst_gy_step_y dst_gy_stride_y * number of elements along Y processed per workitem(in bytes) - * @param[in] dst_gy_offset_first_element_in_bytes The offset of the first element in the destination image - * @param[in] dummy Dummy parameter to easy conditional inclusion - */ -__kernel void sobel_separable7x1( -#ifdef GRAD_X - IMAGE_DECLARATION(src_x), - IMAGE_DECLARATION(dst_gx), -#endif /* GRAD_X */ -#ifdef GRAD_Y - IMAGE_DECLARATION(src_y), - IMAGE_DECLARATION(dst_gy), -#endif /* GRAD_Y */ - int dummy) -{ -#ifdef GRAD_X - Image src_x = CONVERT_TO_IMAGE_STRUCT(src_x); - Image dst_gx = CONVERT_TO_IMAGE_STRUCT(dst_gx); -#endif /* GRAD_X */ -#ifdef GRAD_Y - Image src_y = CONVERT_TO_IMAGE_STRUCT(src_y); - Image dst_gy = CONVERT_TO_IMAGE_STRUCT(dst_gy); -#endif /* GRAD_Y */ - - // Output pixels -#ifdef GRAD_X - int8 gx = 0; - SOBEL7x1(&src_x, gx, Y); - vstore8(gx, 0, (__global int *)dst_gx.ptr); -#endif /* GRAD_X */ -#ifdef GRAD_Y - int8 gy = 0; - SOBEL7x1(&src_y, gy, X); - vstore8(gy, 0, (__global int *)dst_gy.ptr); -#endif /* GRAD_Y */ -} - -/**********************************************/ -/* End implementation of Sobel7x7 filter */ -/**********************************************/ |