make enum all unsigned constants

make enum all unsigned constants

#define PREFER_MCL_WORKGROUP_FUNCTIONS
#if __OPENCL_VERSION__ >= 200 && !defined(PREFER_MCL_WORKGROUP_FUNCTIONS)
#define USE_CL2_WORKGROUP_FUNCTIONS
#endif

#include "clcommons/common.h"
#include "clcommons/image.h"
#include "clcommons/work_group.h"

#ifndef PIXELT
#define PIXELT uint
#endif
#ifndef LABELT
#define LABELT uint
#endif
#ifndef CONNECTIVITYPIXELT
#define CONNECTIVITYPIXELT uint
#endif
#ifndef LDSPIXELT
#define LDSPIXELT uint
#endif
#ifndef LDSLABELT
#define LDSLABELT uint
#endif
#ifndef LDSCONNECTIVITYPIXELT
#define LDSCONNECTIVITYPIXELT uint
#endif

typedef PIXELT PixelT;
typedef LDSPIXELT LDSPixelT;
typedef LABELT LabelT;
typedef LDSLABELT LDSLabelT;
typedef CONNECTIVITYPIXELT ConnectivityPixelT;
typedef LDSCONNECTIVITYPIXELT LDSConnectivityPixelT;

#ifndef BG_VALUE
#define BG_VALUE 0
#endif

#ifndef CONNECTIVITY  //4 or 8
#define CONNECTIVITY 8
#endif

#ifndef WORKGROUP_TILE_SIZE_X
#define WORKGROUP_TILE_SIZE_X 32
#endif
#ifndef WORKGROUP_TILE_SIZE_Y
#define WORKGROUP_TILE_SIZE_Y 2
#endif

#ifndef WORKITEM_REPEAT_X
#define WORKITEM_REPEAT_X 1
#endif
#ifndef WORKITEM_REPEAT_Y
#define WORKITEM_REPEAT_Y 16
#endif

#define TILE_COLS (WORKGROUP_TILE_SIZE_X * WORKITEM_REPEAT_X)
#define TILE_ROWS (WORKGROUP_TILE_SIZE_Y * WORKITEM_REPEAT_Y)

__constant const uint UP = (1<<0);
__constant const uint LEFT = (1<<1);
__constant const uint DOWN = (1<<2);
__constant const uint RIGHT = (1<<3);
__constant const uint LEFT_UP = (1<<4);
__constant const uint LEFT_DOWN = (1<<5);
__constant const uint RIGHT_UP = (1<<6);
__constant const uint RIGHT_DOWN = (1<<7);

#define isConnected(p1, p2) ((p1) == (p2))

#define pixel_at(type, basename, r, c) image_pixel_at(type, PASTE2(basename, _p), im_rows, im_cols, PASTE2(basename, _pitch), (r), (c))

//global dimensions: divUp(image.cols, block.x), divUp(image.rows, block.y);
//__attribute__((reqd_work_group_size(WORKGROUP_TILE_SIZE_X, WORKGROUP_TILE_SIZE_Y, 1)))
//__kernel void
//make_connectivity_image(uint im_rows, uint im_cols, __global PixelT *image_p, uint image_pitch, __global ConnectivityPixelT *connectivityim_p, uint connectivityim_pitch){
//    const uint c = get_global_id(1);
//    const uint r = get_global_id(0);
//    const bool valid_pixel_task = (c < im_cols) & (r < im_rows);
//
//    if(valid_pixel_task){
//        PixelT pixel = pixel_at(PixelT, image, r, c);
//        ConnectivityPixelT connectivity = 0;
//
//#if CONNECTIVITY == 8
//        connectivity |= c > 0 && r > 0                     && isConnected(pixel, pixel_at(PixelT, image, r-1, c - 1)) ? LEFT_UP : 0
//        connectivity |= c > 0                              && isConnected(pixel, pixel_at(PixelT, image, r, c - 1)) ? LEFT : 0
//        connectivity |= c > 0 && r < im_rows - 1           && isConnected(pixel, pixel_at(PixelT, image, r+1, c - 1)) ? LEFT_DOWN : 0
//        connectivity |=          r < im_rows - 1           && isConnected(pixel, pixel_at(PixelT, image, r+1, c)) ? DOWN : 0
//        connectivity |= c < im_cols - 1 && r < im_rows - 1 && isConnected(pixel, pixel_at(PixelT, image, r+1, c + 1)) ? RIGHT_DOWN : 0
//        connectivity |= c < im_cols - 1                    && isConnected(pixel, pixel_at(PixelT, image, r, c + 1)) ? RIGHT : 0
//        connectivity |= c < im_cols - 1 && r > 0           && isConnected(pixel, pixel_at(PixelT, image, r-1, c + 1)) ? RIGHT_UP : 0
//        connectivity |=          r > 0                     && isConnected(pixel, pixel_at(PixelT, image, r-1, c)) ? UP : 0
//#else
//        connectivity |= c > 0                              && isConnected(pixel, pixel_at(PixelT, image, r, c - 1)) ? LEFT : 0
//        connectivity |=          r < im_rows - 1           && isConnected(pixel, pixel_at(PixelT, image, r+1, c)) ? DOWN : 0
//        connectivity |= c < im_cols - 1                    && isConnected(pixel, pixel_at(PixelT, image, r, c + 1)) ? RIGHT : 0
//        connectivity |=          r > 0                     && isConnected(pixel, pixel_at(PixelT, image, r-1, c)) ? UP : 0
//#endif
//
//        pixel_at(ConnectivityPixelT, connectivity, r, c) = connectivity;
//    }
//}

#define apron_pixel(apron, t_r, t_c) apron[(t_r+ 1)][(t_c + 1)]
//global dimensions: divUp(im_cols, tile_cols), divUp(im_rows, tile_rows);
__attribute__((reqd_work_group_size(WORKGROUP_TILE_SIZE_X, WORKGROUP_TILE_SIZE_Y, 1)))
__kernel void make_connectivity_image(
    uint im_rows, uint im_cols, __global PixelT *image_p, uint image_pitch, __global ConnectivityPixelT *connectivityim_p, uint connectivityim_pitch
){
    const uint tile_col_blocksize = get_local_size(0);
    const uint tile_row_blocksize = get_local_size(1);
    const uint tile_col_block = get_group_id(0) + get_global_offset(0) / tile_col_blocksize;
    const uint tile_row_block = get_group_id(1) + get_global_offset(1) / tile_row_blocksize;
    const uint tile_col = get_local_id(0);
    const uint tile_row = get_local_id(1);
    const bool valid_pixel_task = (get_global_id(0) < im_cols) & (get_global_id(1) < im_rows);

    uint tile_rows = tile_row_blocksize;
    uint tile_cols = tile_col_blocksize;

    const uint tile_row_start = tile_row_blocksize * tile_rows;
    const uint tile_col_start = tile_col_blocksize * tile_cols;
    const uint tile_row_end = min((tile_row_blocksize + 1) * tile_rows, (uint) im_rows);
    const uint tile_col_end = min((tile_col_blocksize + 1) * tile_cols, (uint) im_cols);
    //adjust to true tile dimensions
    tile_rows = tile_row_end - tile_row_start;
    tile_cols = tile_col_end - tile_col_start;
    const uint apron_tile_cols = tile_cols + 2;;
    const uint n_tile_pixels = tile_rows * tile_cols;
    const uint n_work_items = get_local_size(0) * get_local_size(1);
    const uint n_apron_tile_pixels = (tile_rows + 2) * (apron_tile_cols);
    __local LDSPixelT im_tile[TILE_ROWS + 2][TILE_COLS + 2];
    __local LDSConnectivityPixelT connectivity_tile[TILE_ROWS][TILE_COLS];

    const uint tid = get_local_id(0) * get_local_size(0) + get_local_id(1);
    for(uint im_tile_fill_task_id = tid; im_tile_fill_task_id < n_apron_tile_pixels; im_tile_fill_task_id += n_work_items){
        const uint im_apron_tile_row = im_tile_fill_task_id / apron_tile_cols;
        const uint im_apron_tile_col = im_tile_fill_task_id % apron_tile_cols;
        const int g_c = ((int)(im_apron_tile_col + tile_col_block * tile_col_blocksize)) - 1;
        const int g_r = ((int)(im_apron_tile_row + tile_row_block * tile_row_blocksize)) - 1;

        im_tile[im_apron_tile_row][im_apron_tile_col] = image_tex2D(PixelT, image_p, (int) im_rows, (int) im_cols, image_pitch, g_r, g_c, ADDRESS_ZERO);
    }
    lds_barrier();

    #pragma unroll
    for (int i = 0; i < WORKITEM_REPEAT_Y; ++i){
        #pragma unroll
        for (int j = 0; j < WORKITEM_REPEAT_X; ++j){
            const uint c = get_local_id(0) + WORKGROUP_TILE_SIZE_X * j;
            const uint r = get_local_id(1) + WORKGROUP_TILE_SIZE_Y * i;
            const uint g_c = get_global_id(1);
            const uint g_r = get_global_id(0);
            PixelT pixel = apron_pixel(im_tile, r, c);
            ConnectivityPixelT connectivity = 0;

#if CONNECTIVITY == 8
            connectivity |= c > 0 && r > 0                         && isConnected(pixel, apron_pixel(im_tile, r-1, c - 1)) ? LEFT_UP : 0;
            connectivity |= c > 0                                  && isConnected(pixel, apron_pixel(im_tile, r  , c - 1)) ? LEFT : 0;
            connectivity |= c > 0 && r < tile_rows - 1             && isConnected(pixel, apron_pixel(im_tile, r+1, c - 1)) ? LEFT_DOWN : 0;
            connectivity |=          r < tile_rows - 1             && isConnected(pixel, apron_pixel(im_tile, r+1, c    )) ? DOWN : 0;
            connectivity |= c < tile_cols - 1 && r < tile_rows - 1 && isConnected(pixel, apron_pixel(im_tile, r+1, c + 1)) ? RIGHT_DOWN : 0;
            connectivity |= c < tile_cols - 1                      && isConnected(pixel, apron_pixel(im_tile, r  , c + 1)) ? RIGHT : 0;
            connectivity |= c < tile_cols - 1 && r > 0             && isConnected(pixel, apron_pixel(im_tile, r-1, c + 1)) ? RIGHT_UP : 0;
            connectivity |=          r > 0                         && isConnected(pixel, apron_pixel(im_tile, r-1, c    )) ? UP : 0;
#else
            connectivity |= c > 0                                  && isConnected(pixel, apron_pixel(im_tile, r  , c - 1)) ? LEFT : 0;
            connectivity |=          r < tile_rows - 1             && isConnected(pixel, apron_pixel(im_tile, r+1, c    )) ? DOWN : 0;
            connectivity |= c < tile_cols - 1                      && isConnected(pixel, apron_pixel(im_tile, r  , c + 1)) ? RIGHT : 0;
            connectivity |=          r > 0                         && isConnected(pixel, apron_pixel(im_tile, r-1, c    )) ? UP : 0;
#endif
            connectivity_tile[r][c] = connectivity;
        }
    }
    lds_barrier();

    for(uint im_tile_fill_task_id = tid; im_tile_fill_task_id < n_tile_pixels; im_tile_fill_task_id += n_work_items){
        const uint im_tile_row = im_tile_fill_task_id / tile_cols;
        const uint im_tile_col = im_tile_fill_task_id % tile_cols;
        const uint g_c = im_tile_col + tile_col_block * tile_col_blocksize;
        const uint g_r = im_tile_row + tile_row_block * tile_row_blocksize;

        pixel_at(ConnectivityPixelT, connectivityim, g_r, g_c) = connectivity_tile[im_tile_row][im_tile_col];
    }
}

__attribute__((reqd_work_group_size(WORKGROUP_TILE_SIZE_X, WORKGROUP_TILE_SIZE_Y, 1)))
__kernel void label_tiles(
    uint im_rows, uint im_cols, __global ConnectivityPixelT *labelim_p, uint labelim_pitch, __global ConnectivityPixelT *connectivityim_p, uint connectivityim_pitch
){
    const uint tile_col_start = get_group_id(0) * TILE_COLS;
    const uint tile_row_start = get_group_id(1) * TILE_ROWS;
    const uint tile_col_end = min((uint) ((get_group_id(0) + 1) * TILE_COLS), im_cols);
    const uint tile_row_end = min((uint) ((get_group_id(1) + 1) * TILE_ROWS), im_rows);
    //adjust to true tile dimensions
    const uint tile_rows = tile_row_end - tile_row_start;
    const uint tile_cols = tile_col_end - tile_col_start;

    //if (x >= im_rows || y >= im_rows) return;

    __local LDSLabelT label_tile_im[TILE_ROWS][TILE_COLS];
    __local LDSConnectivityPixelT  edge_tile_im[TILE_ROWS][TILE_COLS];

    LDSLabelT new_labels[WORKITEM_REPEAT_Y][WORKITEM_REPEAT_X];
    LDSLabelT old_labels[WORKITEM_REPEAT_Y][WORKITEM_REPEAT_X];

    #pragma unroll
    for (int i = 0; i < WORKITEM_REPEAT_Y; ++i){
        #pragma unroll
        for (int j = 0; j < WORKITEM_REPEAT_X; ++j){
            const uint tile_row = get_local_id(1) + WORKGROUP_TILE_SIZE_Y * i;
            const uint tile_col = get_local_id(0) + WORKGROUP_TILE_SIZE_X * j;
            const bool valid_pixel_task = (tile_col < tile_cols) & (tile_row < tile_rows);
            ConnectivityPixelT c = valid_pixel_task ? pixel_at(ConnectivityPixelT, connectivityim, tile_row_start + tile_row, tile_col_start + tile_col) : 0;

            c = tile_col == 0 ? c & ~(LEFT|LEFT_DOWN|LEFT_UP) : c;
            c = tile_row == 0 ? c & ~(UP|LEFT_UP|RIGHT_UP) : c;

            c = tile_col == tile_cols - 1 ? c & ~(RIGHT|RIGHT_DOWN|RIGHT_UP) : c;
            c = tile_row == tile_rows - 1 ? c & ~(DOWN|LEFT_DOWN|RIGHT_DOWN) : c;

            c = valid_pixel_task ? c : 0;

            new_labels[i][j] = valid_pixel_task ? tile_row * tile_cols + tile_col : ((LDSLabelT) -1);
            edge_tile_im[tile_row][tile_col] = c;
        }
    }

    for (uint k = 0; ;++k){
        //make copies
        #pragma unroll
        for (int i = 0; i < WORKITEM_REPEAT_Y; ++i){
            #pragma unroll
            for (int j = 0; j < WORKITEM_REPEAT_X; ++j){
                const uint tile_row = get_local_id(1) + WORKGROUP_TILE_SIZE_Y * i;
                const uint tile_col = get_local_id(0) + WORKGROUP_TILE_SIZE_X * j;

                old_labels[i][j] = new_labels[i][j];
                label_tile_im[tile_row][tile_col] = new_labels[i][j];
            }
        }
        lds_barrier();

        //take minimum label of local neighboorhood - single writer, multi reader version
        #pragma unroll
        for (int i = 0; i < WORKITEM_REPEAT_Y; ++i){
            #pragma unroll
            for (int j = 0; j < WORKITEM_REPEAT_X; ++j){
                const uint tile_row = get_local_id(1) + WORKGROUP_TILE_SIZE_Y * i;
                const uint tile_col = get_local_id(0) + WORKGROUP_TILE_SIZE_X * j;

                const ConnectivityPixelT connectivity = edge_tile_im[tile_row][tile_col];
                LDSLabelT label = new_labels[i][j];

#if CONNECTIVITY == 8
                if (connectivity & UP)
                   label = min(label, label_tile_im[tile_row - 1][tile_col]);
                if (connectivity & LEFT_UP)
                   label = min(label, label_tile_im[tile_row - 1][tile_col - 1]);
                if (connectivity & LEFT)
                   label = min(label, label_tile_im[tile_row][tile_col - 1]);
                if (connectivity &  LEFT_DOWN)
                   label = min(label, label_tile_im[tile_row + 1][tile_col - 1]);
                if (connectivity &  DOWN)
                   label = min(label, label_tile_im[tile_row + 1][tile_col]);
                if (connectivity & RIGHT_DOWN)
                   label = min(label, label_tile_im[tile_row + 1][tile_col + 1]);
                if (connectivity & RIGHT)
                   label = min(label, label_tile_im[tile_row][tile_col + 1]);
                if (connectivity & RIGHT_UP)
                   label = min(label, label_tile_im[tile_row - 1][tile_col + 1]);

#else
                if (connectivity & UP)
                   label = min(label, label_tile_im[tile_row - 1][tile_col]);
                if (connectivity & LEFT)
                   label = min(label, label_tile_im[tile_row][tile_col - 1]);
                if (connectivity &  DOWN)
                   label = min(label, label_tile_im[tile_row + 1][tile_col]);
                if (connectivity & RIGHT)
                   label = min(label, label_tile_im[tile_row][tile_col + 1]);
#endif

                new_labels[i][j] = label;
            }
        }
        lds_barrier();

        __local uint changed;
        if((get_local_id(1) == 0) & (get_local_id(0) == 0)){
            changed = 0;
        }
        lds_barrier();

        __local LDSLabelT *labels = &label_tile_im[0][0];

        uint pchanged = 0;
        #pragma unroll
        for(int i = 0; i < WORKITEM_REPEAT_Y; ++i){
            #pragma unroll
            for(int j = 0; j < WORKITEM_REPEAT_X; ++j){
                if(new_labels[i][j] < old_labels[i][j]){
                    pchanged++;
                    atomic_min(labels + old_labels[i][j], new_labels[i][j]);
                }
            }
        }
        atomic_add(&changed, pchanged);
        lds_barrier();

        //if there are no updates, we are finished
        if(!changed){
            break;
        }

        //Compact paths
        #pragma unroll
        for(int i = 0; i < WORKITEM_REPEAT_Y; ++i){
            #pragma unroll
            for(int j = 0; j < WORKITEM_REPEAT_X; ++j){
                const uint tile_row = get_local_id(1) + WORKGROUP_TILE_SIZE_Y * i;
                const uint tile_col = get_local_id(0) + WORKGROUP_TILE_SIZE_X * j;
                const bool valid_pixel_task = (tile_col < tile_cols) & (tile_row < tile_rows);
                if(valid_pixel_task){
                    LDSLabelT label = new_labels[i][j];
                    //find root label
                    while(labels[label] < label){
                        label = labels[label];
                    }

                    new_labels[i][j] = label;
                }
            }
        }
        lds_barrier();
    }

    //save with adjusted global (untiled) labels
    #pragma unroll
    for(int i = 0; i < WORKITEM_REPEAT_Y; ++i){
        #pragma unroll
        for(int j = 0; j < WORKITEM_REPEAT_X; ++j){
            const LabelT tile_label = new_labels[i][j];
            //convert the tile label into it's 2-D equivilent
            const uint g_r = (tile_label / tile_cols) + tile_col_start;
            const uint g_c = (tile_label % tile_cols) + tile_row_start;

            //adjust to global offset and convert to scanline order again - this is globally unique
            const LabelT glabel = g_r * im_cols + g_c;
            const bool valid_pixel_task = (g_c < im_cols) & (g_r < im_rows);
            if(valid_pixel_task){
                pixel_at(LabelT, labelim, g_r, g_c) = glabel;
            }
        }
    }
}

inline
LabelT find_root_global(const __global LabelT *labelim_p, uint labelim_pitch, LabelT label, const uint im_rows, const uint im_cols){
    for(;;){
        const uint y = label / im_cols;
        const uint x = label % im_cols;
        const LabelT parent = pixel_at(LabelT, labelim, y, x);

        if(label == parent){
            break;
        }

        label = parent;
    }
    return label;
}

__kernel void compact_paths_global(uint im_rows, uint im_cols, __global LabelT *labelim_p, uint labelim_pitch){
    const uint x = get_global_id(0);
    const uint y = get_global_id(1);

    if((x < im_cols) & (y < im_rows)){
        pixel_at(LabelT, labelim, y, x) = find_root_global(labelim_p, labelim_pitch, pixel_at(LabelT, labelim, y, x), im_rows, im_cols);
    }
}

inline
void merge_edge_labels(const uint im_rows, const uint im_cols, __global LabelT *labelim_p, const uint labelim_pitch, const LabelT l1, const LabelT l2, uint *changed){
    const LabelT r1 = find_root_global(labelim_p, labelim_pitch, l1, im_rows, im_cols);
    const LabelT r2 = find_root_global(labelim_p, labelim_pitch, l2, im_rows, im_cols);

    if(r1 == r2){
        return;
    }

    const LabelT mi = min(r1, r2);
    const LabelT ma = max(r1, r2);

    const uint y = ma / im_cols;
    const uint x = ma % im_cols;

    atomic_min(&pixel_at(LabelT, labelim, y, x), mi);
    *changed = true;
}

//merge along the adjacent pixels in the grid formed on the image with the following tiles
__kernel void merge_tiles(
    const uint im_rows, const uint im_cols,
    const uint n_vert_tiles, const uint n_horz_tiles,
    uint tile_rows, uint tile_cols,
    const __global ConnectivityPixelT *connectivityim_p, const uint connectivityim_pitch,
    __global LabelT *labelim_p, const uint labelim_pitch,
    const uint yIncomplete, uint xIncomplete
){
    const uint ngroups_x = get_num_groups(0);
    const uint ngroups_y = get_num_groups(1);

    const uint tid = get_local_linear_id();
    const uint stride = get_local_size(1) * get_local_size(0);

    const uint ybegin = get_group_id(1) * (n_vert_tiles * tile_rows);
    uint yend   = ybegin + n_vert_tiles * tile_rows;

    if(get_group_id(1) == ngroups_y - 1){
        yend -= yIncomplete * tile_rows;
        yend -= tile_rows;
        tile_rows = (im_rows % tile_rows);

        yend += tile_rows;
    }

    const uint xbegin = get_group_id(0) * n_horz_tiles * tile_cols;
    uint xend = xbegin + n_horz_tiles * tile_cols;

    if(get_group_id(0) == ngroups_x - 1){
        if (xIncomplete) yend = ybegin;
        xend -= xIncomplete * tile_cols;
        xend -= tile_cols;
        tile_cols = (im_cols % tile_cols);

        xend += tile_cols;
    }

    if(get_group_id(1) == (ngroups_y - 1) && yIncomplete){
        xend = xbegin;
    }

    const uint tasksV = (n_horz_tiles - 1) * (yend - ybegin);
    const uint tasksH = (n_vert_tiles - 1) * (xend - xbegin);

    const uint total = tasksH + tasksV;

    __local uint changed;
    uint pchanged;
    do{
        pchanged = false;
        for(uint taskIdx = tid; taskIdx < total; taskIdx += stride){
            if(taskIdx < tasksH){
                const uint indexH = taskIdx;

                const uint row = indexH / (xend - xbegin);
                const uint col = indexH % (xend - xbegin);

                const uint y = ybegin + (row + 1) * tile_rows;
                const uint x = xbegin + col;

                const ConnectivityPixelT e = pixel_at(ConnectivityPixelT, connectivityim, y, x);
                if(e & UP){
                    const LabelT lc = pixel_at(LabelT, labelim, y, x);
                    const LabelT lu = pixel_at(LabelT, labelim, y - 1, x);
                    merge_edge_labels(im_rows, im_cols, labelim_p, labelim_pitch, lc, lu, &pchanged);
                }
            }else{
                const uint indexV = taskIdx - tasksH;

                const uint col = indexV / (yend - ybegin);
                const uint row = indexV % (yend - ybegin);

                const uint x = xbegin + (col + 1) * tile_cols;
                const uint y = ybegin + row;

                const ConnectivityPixelT e = pixel_at(ConnectivityPixelT, connectivityim, y, x);
                if(e & LEFT){
                    const LabelT lc = pixel_at(LabelT, labelim, y, x);
                    const LabelT lu = pixel_at(LabelT, labelim, y, x - 1);
                    merge_edge_labels(im_rows, im_cols, labelim_p, labelim_pitch, lc, lu, &pchanged);
                }
            }
        }
        atomic_add(&changed, pchanged);
        lds_barrier();
        pchanged = changed;
    }while(pchanged);
}

#if 0
__kernel void mark_root_classes(
    uint im_rows, uint im_cols,
    __global PixelT *image_p, uint image_pitch,
    __global const LabelT* labelim_p, const uint labelim_pitch,
    __global uint* is_root_class_image_p, const uint is_root_class_image_pitch
){
    const uint c = get_global_id(0);
    const uint r = get_global_id(1);
    const bool valid_pixel_task = (c < im_cols) & (r < im_rows);

    const uint linear_index = c + r * im_cols;
    if(valid_pixel_task){
        const PixelT pixel = pixel_at(PixelT, image, r, c);
        const LabelT label = pixel_at(LabelT, labelim, r, c);
        pixel_at(uint, is_root_class_image, r, c) = (pixel != BG_VALUE) & (label == linear_index);
    }
}
#endif

#ifndef USE_CL2_WORKGROUP_FUNCTIONS
MAKE_WORK_GROUP_FUNCTIONS(uint, uint, 0U, UINT_MAX)
#endif

//root class inclusive prefix sums belonging to each compute unit given to each tile - note if narray_workers == 1, no merge step is necessary
//computes local prefix sums to get intra-wg blocksums, prefix sum that to get intra-wg offsets - this is needed to merge the final blocksums
//global dims: <wgs_per_histogram, n_tiles>, work_dims: <wg_size, 1>
//global blocksums[divUp(nblocks, blocks_per_wg)]
#ifdef PROMISE_WG_IS_WAVEFRONT
__attribute__((reqd_work_group_size(DEVICE_WAVEFRONT_SIZE, 1, 1)))
#endif
__kernel void mark_roots_and_make_intra_wg_block_local_prefix_sums(uint im_rows, uint im_cols,
    __global PixelT *image_p, uint image_pitch,
    __global const LabelT* labelim_p, const uint labelim_pitch,
    __global uint * restrict array_intra_wg_block_sums_p,
    __global uint * restrict array_prefix_sum_p, const uint array_prefix_sum_pitch
){
    const uint array_length = im_rows * im_cols;
    const uint array_wg_id = get_group_id(0);
    const uint narray_workers = get_num_groups(0);
    const uint wg_size = get_local_size(0);
    const uint block_size = wg_size;//efficient block size
    const uint nblocks = divUp(array_length, block_size);//number of efficiently processible blocks
    const uint nblocks_per_wg = nblocks / narray_workers;
    //const uint nblocks_to_merge = nblocks / nblocks_per_wg;
    const uint nblocks_remainder = nblocks - (narray_workers * nblocks_per_wg);
    const uint nblocks_to_left = nblocks_per_wg * array_wg_id + (array_wg_id < nblocks_remainder ? array_wg_id : nblocks_remainder);
    const uint n_wg_blocks = nblocks_per_wg + (array_wg_id < nblocks_remainder ? 1 : 0);

    const uint start_bin = nblocks_to_left * block_size;
    const uint end_bin_ = start_bin + n_wg_blocks * block_size;//block aligned end

    uint inter_block_sum = 0;

    for(uint linear_index = get_local_id(0) + start_bin; linear_index < end_bin_; linear_index += wg_size){
        const uint r = linear_index / im_cols;
        const uint c = linear_index % im_cols;

        uint count = 0;
        if(linear_index < array_length){
            const PixelT pixel = pixel_at(PixelT, image, r, c);
            const LabelT label = pixel_at(LabelT, labelim, r, c);
            count = (pixel != BG_VALUE) & (label == linear_index);
        }

#ifdef USE_CL2_WORKGROUP_FUNCTIONS
        uint block_prefix_sum_inclusive = work_group_scan_inclusive_add(count);
#else
        __local uint lmem[WORK_GROUP_FUNCTION_MAX_MEMORY_SIZE];
        uint block_prefix_sum_inclusive = clc_work_group_scan_inclusive_add_uint(count, lmem);
#endif

        block_prefix_sum_inclusive += inter_block_sum;
        if(linear_index < array_length){
            pixel_at(uint, array_prefix_sum, r, c) = block_prefix_sum_inclusive;
        }
#ifdef USE_CL2_WORKGROUP_FUNCTIONS
        inter_block_sum = work_group_broadcast(block_prefix_sum_inclusive, wg_size - 1);
#else
        __local uint value;
        inter_block_sum = clc_work_group_broadcast1_uint(block_prefix_sum_inclusive, wg_size - 1, &value);
#endif
    }
    if((array_intra_wg_block_sums_p != 0) & (get_local_id(0) == wg_size - 1)){
        array_intra_wg_block_sums_p[array_wg_id] = inter_block_sum;
    }
}

//exclusive prefix sums intra-wg blocksums to get intra-wg offsets - needed to merge together all the wg-local prefix sums
//global dims: <1, n_tiles>, work_dims: <wg_size, 1>
//global tile_intra_wg_block_sums[n_tiles][nblocks_to_merge]
#ifdef PROMISE_WG_IS_WAVEFRONT
__attribute__((reqd_work_group_size(DEVICE_WAVEFRONT_SIZE, 1, 1)))
#endif
__kernel void make_intra_wg_block_global_sums(
    __global uint * restrict intra_wg_block_sums_p, uint nblocks_to_merge
){
    const uint wg_size = get_local_size(0);

    __local uint intra_wg_block_sums[WG_SIZE_MAX + 1];
    if(get_local_id(0) == 0){
        intra_wg_block_sums[0] = 0;
    }
    lds_barrier();
    uint intra_wg_block_offset = 0;

    for(uint intra_wg_block_id = get_local_id(0); intra_wg_block_id < divUp(nblocks_to_merge, wg_size) * wg_size; intra_wg_block_id += wg_size){
        //get the unsumed blocksums
        const uint intra_wg_block_sum = intra_wg_block_id < nblocks_to_merge ? intra_wg_block_sums_p[intra_wg_block_id] : 0;
        intra_wg_block_sums[get_local_id(0) + 1] = intra_wg_block_sum;
        lds_barrier();

        const uint intra_wg_block_sum_delayed = intra_wg_block_sums[get_local_id(0)];
#ifdef USE_CL2_WORKGROUP_FUNCTIONS
        intra_wg_block_offset += work_group_scan_inclusive_add(intra_wg_block_sum_delayed);
#else
        __local uint lmem[WORK_GROUP_FUNCTION_MAX_MEMORY_SIZE];
        intra_wg_block_offset += clc_work_group_scan_inclusive_add_uint(intra_wg_block_sum_delayed, lmem);
#endif
        if(intra_wg_block_id < nblocks_to_merge){
            intra_wg_block_sums_p[intra_wg_block_id] = intra_wg_block_offset;
        }
#ifdef USE_CL2_WORKGROUP_FUNCTIONS
        intra_wg_block_offset = work_group_broadcast(intra_wg_block_offset, wg_size - 1);
#else
        __local uint value;
        intra_wg_block_offset = clc_work_group_broadcast1_uint(intra_wg_block_offset, wg_size - 1, &value);
#endif

        if(get_local_id(0) == 0){
            intra_wg_block_sums[0] = intra_wg_block_sums[wg_size];
        }
        lds_barrier();
    }
}

//merges global offsets of intra-wg-block offsets of prefix sums
//global dims: <wgs_per_sum>, work_dims: <wg_size> : wg_size >= nblocks_to_merge
//global array_of_prefix_sums[im_rows*im_cols] : as input partial sums, as output full prefix sum
#ifdef PROMISE_WG_IS_WAVEFRONT
__attribute__((reqd_work_group_size(DEVICE_WAVEFRONT_SIZE, 1, 1)))
#endif
__kernel void make_prefix_sums_with_intra_wg_block_global_sums(
        const uint im_rows, const uint im_cols,
        __global const uint * restrict intra_wg_block_sums_p,
        __global uint * restrict array_of_prefix_sums_p, uint array_of_prefix_sums_pitch //input -> partial/local prefix sums, output: global prefix sums
){
    const uint array_length = im_rows * im_cols;
    const uint n_arrays = get_num_groups(1);
    const uint array_id = get_group_id(1);
    const uint array_wg_id = get_group_id(0);
    const uint narray_workers = get_num_groups(0);
    const uint wg_size = get_local_size(0);
    const uint block_size = wg_size;//efficient block size
    const uint nblocks = divUp(array_length, block_size);//number of efficiently processible blocks
    const uint nblocks_per_wg = nblocks / narray_workers;
    const uint nblocks_to_merge = nblocks / nblocks_per_wg;
    const uint nblocks_remainder = nblocks - (narray_workers * nblocks_per_wg);
    const uint nblocks_to_left = nblocks_per_wg * array_wg_id + (array_wg_id < nblocks_remainder ? array_wg_id : nblocks_remainder);
    const uint n_wg_blocks = nblocks_per_wg + (array_wg_id < nblocks_remainder ? 1 : 0);

    const uint start_bin = nblocks_to_left * block_size;
    const uint end_bin_ = start_bin + n_wg_blocks * block_size;//block aligned end

    const uint inter_block_sum = intra_wg_block_sums_p[array_wg_id];
    for(uint array_index = get_local_id(0) + start_bin; array_index < end_bin_; array_index += wg_size){
        if(array_index < array_length){
            const uint g_r = array_index / im_cols;
            const uint g_c = array_index % im_cols;
            image_pixel_at(uint, array_of_prefix_sums_p, im_rows, im_cols, array_of_prefix_sums_pitch, g_r, g_c) += inter_block_sum;
            //note we could save a honest chunk of time by putting the relabeling here
        }
    }
}

__kernel void relabel_with_scanline_order(
    uint im_rows, uint im_cols,
    __global LabelT* labelim_out_p, const uint labelim_out_pitch,
    __global const PixelT* image_p, const uint image_pitch,
    __global const LabelT* labelim_p, const uint labelim_pitch,
    __global uint* scanline_prefix_sum_of_root_classes_p, const uint scanline_prefix_sum_of_root_classes_pitch
){
    const uint c = get_global_id(0);
    const uint r = get_global_id(1);
    const bool valid_pixel_task = (c < im_cols) & (r < im_rows);

    if(valid_pixel_task){
        const PixelT pixel = pixel_at(PixelT, image, r, c);
        LabelT final_label = 0;
        if(pixel != BG_VALUE){
            const LabelT label = pixel_at(LabelT, labelim, r, c);
            const uint label_r = label / im_cols;
            const uint label_c = label % im_cols;
            const uint scan_id = pixel_at(uint, scanline_prefix_sum_of_root_classes, label_r, label_c);
            final_label = scan_id + 1;
        }
        pixel_at(LabelT, labelim_out, r, c) = final_label;
    }
}

#define PREFER_MCL_WORKGROUP_FUNCTIONS
#if __OPENCL_VERSION__ >= 200 && !defined(PREFER_MCL_WORKGROUP_FUNCTIONS)
#define USE_CL2_WORKGROUP_FUNCTIONS
#endif

#include "clcommons/common.h"
#include "clcommons/image.h"
#include "clcommons/work_group.h"

#ifndef PIXELT
#define PIXELT uint
#endif
#ifndef LABELT
#define LABELT uint
#endif
#ifndef CONNECTIVITYPIXELT
#define CONNECTIVITYPIXELT uint
#endif
#ifndef LDSPIXELT
#define LDSPIXELT uint
#endif
#ifndef LDSLABELT
#define LDSLABELT uint
#endif
#ifndef LDSCONNECTIVITYPIXELT
#define LDSCONNECTIVITYPIXELT uint
#endif

typedef PIXELT PixelT;
typedef LDSPIXELT LDSPixelT;
typedef LABELT LabelT;
typedef LDSLABELT LDSLabelT;
typedef CONNECTIVITYPIXELT ConnectivityPixelT;
typedef LDSCONNECTIVITYPIXELT LDSConnectivityPixelT;

#ifndef BG_VALUE
#define BG_VALUE 0
#endif

#ifndef CONNECTIVITY  //4 or 8
#define CONNECTIVITY 8
#endif

#ifndef WORKGROUP_TILE_SIZE_X
#define WORKGROUP_TILE_SIZE_X 32
#endif
#ifndef WORKGROUP_TILE_SIZE_Y
#define WORKGROUP_TILE_SIZE_Y 2
#endif

#ifndef WORKITEM_REPEAT_X
#define WORKITEM_REPEAT_X 1
#endif
#ifndef WORKITEM_REPEAT_Y
#define WORKITEM_REPEAT_Y 16
#endif

#define TILE_COLS (WORKGROUP_TILE_SIZE_X * WORKITEM_REPEAT_X)
#define TILE_ROWS (WORKGROUP_TILE_SIZE_Y * WORKITEM_REPEAT_Y)

enum ConnectivityEnum {
    UP = (1<<0),
    LEFT = (1<<1),
    DOWN = (1<<2),
    RIGHT = (1<<3),
    LEFT_UP = (1<<4),
    LEFT_DOWN = (1<<5),
    RIGHT_UP = (1<<6),
    RIGHT_DOWN = (1<<7)
};

#define isConnected(p1, p2) ((p1) == (p2))

#define pixel_at(type, basename, r, c) image_pixel_at(type, PASTE2(basename, _p), im_rows, im_cols, PASTE2(basename, _pitch), (r), (c))

//global dimensions: divUp(image.cols, block.x), divUp(image.rows, block.y);
//__attribute__((reqd_work_group_size(WORKGROUP_TILE_SIZE_X, WORKGROUP_TILE_SIZE_Y, 1)))
//__kernel void
//make_connectivity_image(uint im_rows, uint im_cols, __global PixelT *image_p, uint image_pitch, __global ConnectivityPixelT *connectivityim_p, uint connectivityim_pitch){
//    const uint c = get_global_id(1);
//    const uint r = get_global_id(0);
//    const bool valid_pixel_task = (c < im_cols) & (r < im_rows);
//
//    if(valid_pixel_task){
//        PixelT pixel = pixel_at(PixelT, image, r, c);
//        ConnectivityPixelT connectivity = 0;
//
//#if CONNECTIVITY == 8
//        connectivity |= c > 0 && r > 0                     && isConnected(pixel, pixel_at(PixelT, image, r-1, c - 1)) ? LEFT_UP : 0
//        connectivity |= c > 0                              && isConnected(pixel, pixel_at(PixelT, image, r, c - 1)) ? LEFT : 0
//        connectivity |= c > 0 && r < im_rows - 1           && isConnected(pixel, pixel_at(PixelT, image, r+1, c - 1)) ? LEFT_DOWN : 0
//        connectivity |=          r < im_rows - 1           && isConnected(pixel, pixel_at(PixelT, image, r+1, c)) ? DOWN : 0
//        connectivity |= c < im_cols - 1 && r < im_rows - 1 && isConnected(pixel, pixel_at(PixelT, image, r+1, c + 1)) ? RIGHT_DOWN : 0
//        connectivity |= c < im_cols - 1                    && isConnected(pixel, pixel_at(PixelT, image, r, c + 1)) ? RIGHT : 0
//        connectivity |= c < im_cols - 1 && r > 0           && isConnected(pixel, pixel_at(PixelT, image, r-1, c + 1)) ? RIGHT_UP : 0
//        connectivity |=          r > 0                     && isConnected(pixel, pixel_at(PixelT, image, r-1, c)) ? UP : 0
//#else
//        connectivity |= c > 0                              && isConnected(pixel, pixel_at(PixelT, image, r, c - 1)) ? LEFT : 0
//        connectivity |=          r < im_rows - 1           && isConnected(pixel, pixel_at(PixelT, image, r+1, c)) ? DOWN : 0
//        connectivity |= c < im_cols - 1                    && isConnected(pixel, pixel_at(PixelT, image, r, c + 1)) ? RIGHT : 0
//        connectivity |=          r > 0                     && isConnected(pixel, pixel_at(PixelT, image, r-1, c)) ? UP : 0
//#endif
//
//        pixel_at(ConnectivityPixelT, connectivity, r, c) = connectivity;
//    }
//}

#define apron_pixel(apron, t_r, t_c) apron[(t_r+ 1)][(t_c + 1)]
//global dimensions: divUp(im_cols, tile_cols), divUp(im_rows, tile_rows);
__attribute__((reqd_work_group_size(WORKGROUP_TILE_SIZE_X, WORKGROUP_TILE_SIZE_Y, 1)))
__kernel void make_connectivity_image(
    uint im_rows, uint im_cols, __global PixelT *image_p, uint image_pitch, __global ConnectivityPixelT *connectivityim_p, uint connectivityim_pitch
){
    const uint tile_col_blocksize = get_local_size(0);
    const uint tile_row_blocksize = get_local_size(1);
    const uint tile_col_block = get_group_id(0) + get_global_offset(0) / tile_col_blocksize;
    const uint tile_row_block = get_group_id(1) + get_global_offset(1) / tile_row_blocksize;
    const uint tile_col = get_local_id(0);
    const uint tile_row = get_local_id(1);
    const bool valid_pixel_task = (get_global_id(0) < im_cols) & (get_global_id(1) < im_rows);

    uint tile_rows = tile_row_blocksize;
    uint tile_cols = tile_col_blocksize;

    const uint tile_row_start = tile_row_blocksize * tile_rows;
    const uint tile_col_start = tile_col_blocksize * tile_cols;
    const uint tile_row_end = min((tile_row_blocksize + 1) * tile_rows, (uint) im_rows);
    const uint tile_col_end = min((tile_col_blocksize + 1) * tile_cols, (uint) im_cols);
    //adjust to true tile dimensions
    tile_rows = tile_row_end - tile_row_start;
    tile_cols = tile_col_end - tile_col_start;
    const uint apron_tile_cols = tile_cols + 2;;
    const uint n_tile_pixels = tile_rows * tile_cols;
    const uint n_work_items = get_local_size(0) * get_local_size(1);
    const uint n_apron_tile_pixels = (tile_rows + 2) * (apron_tile_cols);
    __local LDSPixelT im_tile[TILE_ROWS + 2][TILE_COLS + 2];
    __local LDSConnectivityPixelT connectivity_tile[TILE_ROWS][TILE_COLS];

    const uint tid = get_local_id(0) * get_local_size(0) + get_local_id(1);
    for(uint im_tile_fill_task_id = tid; im_tile_fill_task_id < n_apron_tile_pixels; im_tile_fill_task_id += n_work_items){
        const uint im_apron_tile_row = im_tile_fill_task_id / apron_tile_cols;
        const uint im_apron_tile_col = im_tile_fill_task_id % apron_tile_cols;
        const int g_c = ((int)(im_apron_tile_col + tile_col_block * tile_col_blocksize)) - 1;
        const int g_r = ((int)(im_apron_tile_row + tile_row_block * tile_row_blocksize)) - 1;

        im_tile[im_apron_tile_row][im_apron_tile_col] = image_tex2D(PixelT, image_p, (int) im_rows, (int) im_cols, image_pitch, g_r, g_c, ADDRESS_ZERO);
    }
    lds_barrier();

    #pragma unroll
    for (int i = 0; i < WORKITEM_REPEAT_Y; ++i){
        #pragma unroll
        for (int j = 0; j < WORKITEM_REPEAT_X; ++j){
            const uint c = get_local_id(0) + WORKGROUP_TILE_SIZE_X * j;
            const uint r = get_local_id(1) + WORKGROUP_TILE_SIZE_Y * i;
            const uint g_c = get_global_id(1);
            const uint g_r = get_global_id(0);
            PixelT pixel = apron_pixel(im_tile, r, c);
            ConnectivityPixelT connectivity = 0;

#if CONNECTIVITY == 8
            connectivity |= c > 0 && r > 0                         && isConnected(pixel, apron_pixel(im_tile, r-1, c - 1)) ? LEFT_UP : 0;
            connectivity |= c > 0                                  && isConnected(pixel, apron_pixel(im_tile, r  , c - 1)) ? LEFT : 0;
            connectivity |= c > 0 && r < tile_rows - 1             && isConnected(pixel, apron_pixel(im_tile, r+1, c - 1)) ? LEFT_DOWN : 0;
            connectivity |=          r < tile_rows - 1             && isConnected(pixel, apron_pixel(im_tile, r+1, c    )) ? DOWN : 0;
            connectivity |= c < tile_cols - 1 && r < tile_rows - 1 && isConnected(pixel, apron_pixel(im_tile, r+1, c + 1)) ? RIGHT_DOWN : 0;
            connectivity |= c < tile_cols - 1                      && isConnected(pixel, apron_pixel(im_tile, r  , c + 1)) ? RIGHT : 0;
            connectivity |= c < tile_cols - 1 && r > 0             && isConnected(pixel, apron_pixel(im_tile, r-1, c + 1)) ? RIGHT_UP : 0;
            connectivity |=          r > 0                         && isConnected(pixel, apron_pixel(im_tile, r-1, c    )) ? UP : 0;
#else
            connectivity |= c > 0                                  && isConnected(pixel, apron_pixel(im_tile, r  , c - 1)) ? LEFT : 0;
            connectivity |=          r < tile_rows - 1             && isConnected(pixel, apron_pixel(im_tile, r+1, c    )) ? DOWN : 0;
            connectivity |= c < tile_cols - 1                      && isConnected(pixel, apron_pixel(im_tile, r  , c + 1)) ? RIGHT : 0;
            connectivity |=          r > 0                         && isConnected(pixel, apron_pixel(im_tile, r-1, c    )) ? UP : 0;
#endif
            connectivity_tile[r][c] = connectivity;
        }
    }
    lds_barrier();

    for(uint im_tile_fill_task_id = tid; im_tile_fill_task_id < n_tile_pixels; im_tile_fill_task_id += n_work_items){
        const uint im_tile_row = im_tile_fill_task_id / tile_cols;
        const uint im_tile_col = im_tile_fill_task_id % tile_cols;
        const uint g_c = im_tile_col + tile_col_block * tile_col_blocksize;
        const uint g_r = im_tile_row + tile_row_block * tile_row_blocksize;

        pixel_at(ConnectivityPixelT, connectivityim, g_r, g_c) = connectivity_tile[im_tile_row][im_tile_col];
    }
}

__attribute__((reqd_work_group_size(WORKGROUP_TILE_SIZE_X, WORKGROUP_TILE_SIZE_Y, 1)))
__kernel void label_tiles(
    uint im_rows, uint im_cols, __global ConnectivityPixelT *labelim_p, uint labelim_pitch, __global ConnectivityPixelT *connectivityim_p, uint connectivityim_pitch
){
    const uint tile_col_start = get_group_id(0) * TILE_COLS;
    const uint tile_row_start = get_group_id(1) * TILE_ROWS;
    const uint tile_col_end = min((uint) ((get_group_id(0) + 1) * TILE_COLS), im_cols);
    const uint tile_row_end = min((uint) ((get_group_id(1) + 1) * TILE_ROWS), im_rows);
    //adjust to true tile dimensions
    const uint tile_rows = tile_row_end - tile_row_start;
    const uint tile_cols = tile_col_end - tile_col_start;

    //if (x >= im_rows || y >= im_rows) return;

    __local LDSLabelT label_tile_im[TILE_ROWS][TILE_COLS];
    __local LDSConnectivityPixelT  edge_tile_im[TILE_ROWS][TILE_COLS];

    LDSLabelT new_labels[WORKITEM_REPEAT_Y][WORKITEM_REPEAT_X];
    LDSLabelT old_labels[WORKITEM_REPEAT_Y][WORKITEM_REPEAT_X];

    #pragma unroll
    for (int i = 0; i < WORKITEM_REPEAT_Y; ++i){
        #pragma unroll
        for (int j = 0; j < WORKITEM_REPEAT_X; ++j){
            const uint tile_row = get_local_id(1) + WORKGROUP_TILE_SIZE_Y * i;
            const uint tile_col = get_local_id(0) + WORKGROUP_TILE_SIZE_X * j;
            const bool valid_pixel_task = (tile_col < tile_cols) & (tile_row < tile_rows);
            ConnectivityPixelT c = valid_pixel_task ? pixel_at(ConnectivityPixelT, connectivityim, tile_row_start + tile_row, tile_col_start + tile_col) : 0;

            c = tile_col == 0 ? c & ~(LEFT|LEFT_DOWN|LEFT_UP) : c;
            c = tile_row == 0 ? c & ~(UP|LEFT_UP|RIGHT_UP) : c;

            c = tile_col == tile_cols - 1 ? c & ~(RIGHT|RIGHT_DOWN|RIGHT_UP) : c;
            c = tile_row == tile_rows - 1 ? c & ~(DOWN|LEFT_DOWN|RIGHT_DOWN) : c;

            c = valid_pixel_task ? c : 0;

            new_labels[i][j] = valid_pixel_task ? tile_row * tile_cols + tile_col : ((LDSLabelT) -1);
            edge_tile_im[tile_row][tile_col] = c;
        }
    }

    for (uint k = 0; ;++k){
        //make copies
        #pragma unroll
        for (int i = 0; i < WORKITEM_REPEAT_Y; ++i){
            #pragma unroll
            for (int j = 0; j < WORKITEM_REPEAT_X; ++j){
                const uint tile_row = get_local_id(1) + WORKGROUP_TILE_SIZE_Y * i;
                const uint tile_col = get_local_id(0) + WORKGROUP_TILE_SIZE_X * j;

                old_labels[i][j] = new_labels[i][j];
                label_tile_im[tile_row][tile_col] = new_labels[i][j];
            }
        }
        lds_barrier();

        //take minimum label of local neighboorhood - single writer, multi reader version
        #pragma unroll
        for (int i = 0; i < WORKITEM_REPEAT_Y; ++i){
            #pragma unroll
            for (int j = 0; j < WORKITEM_REPEAT_X; ++j){
                const uint tile_row = get_local_id(1) + WORKGROUP_TILE_SIZE_Y * i;
                const uint tile_col = get_local_id(0) + WORKGROUP_TILE_SIZE_X * j;

                const ConnectivityPixelT connectivity = edge_tile_im[tile_row][tile_col];
                LDSLabelT label = new_labels[i][j];

#if CONNECTIVITY == 8
                if (connectivity & UP)
                   label = min(label, label_tile_im[tile_row - 1][tile_col]);
                if (connectivity & LEFT_UP)
                   label = min(label, label_tile_im[tile_row - 1][tile_col - 1]);
                if (connectivity & LEFT)
                   label = min(label, label_tile_im[tile_row][tile_col - 1]);
                if (connectivity &  LEFT_DOWN)
                   label = min(label, label_tile_im[tile_row + 1][tile_col - 1]);
                if (connectivity &  DOWN)
                   label = min(label, label_tile_im[tile_row + 1][tile_col]);
                if (connectivity & RIGHT_DOWN)
                   label = min(label, label_tile_im[tile_row + 1][tile_col + 1]);
                if (connectivity & RIGHT)
                   label = min(label, label_tile_im[tile_row][tile_col + 1]);
                if (connectivity & RIGHT_UP)
                   label = min(label, label_tile_im[tile_row - 1][tile_col + 1]);

#else
                if (connectivity & UP)
                   label = min(label, label_tile_im[tile_row - 1][tile_col]);
                if (connectivity & LEFT)
                   label = min(label, label_tile_im[tile_row][tile_col - 1]);
                if (connectivity &  DOWN)
                   label = min(label, label_tile_im[tile_row + 1][tile_col]);
                if (connectivity & RIGHT)
                   label = min(label, label_tile_im[tile_row][tile_col + 1]);
#endif

                new_labels[i][j] = label;
            }
        }
        lds_barrier();

        __local uint changed;
        if((get_local_id(1) == 0) & (get_local_id(0) == 0)){
            changed = 0;
        }
        lds_barrier();

        __local LDSLabelT *labels = &label_tile_im[0][0];

        uint pchanged = 0;
        #pragma unroll
        for(int i = 0; i < WORKITEM_REPEAT_Y; ++i){
            #pragma unroll
            for(int j = 0; j < WORKITEM_REPEAT_X; ++j){
                if(new_labels[i][j] < old_labels[i][j]){
                    pchanged++;
                    atomic_min(labels + old_labels[i][j], new_labels[i][j]);
                }
            }
        }
        atomic_add(&changed, pchanged);
        lds_barrier();

        //if there are no updates, we are finished
        if(!changed){
            break;
        }

        //Compact paths
        #pragma unroll
        for(int i = 0; i < WORKITEM_REPEAT_Y; ++i){
            #pragma unroll
            for(int j = 0; j < WORKITEM_REPEAT_X; ++j){
                const uint tile_row = get_local_id(1) + WORKGROUP_TILE_SIZE_Y * i;
                const uint tile_col = get_local_id(0) + WORKGROUP_TILE_SIZE_X * j;
                const bool valid_pixel_task = (tile_col < tile_cols) & (tile_row < tile_rows);
                if(valid_pixel_task){
                    LDSLabelT label = new_labels[i][j];
                    //find root label
                    while(labels[label] < label){
                        label = labels[label];
                    }

                    new_labels[i][j] = label;
                }
            }
        }
        lds_barrier();
    }

    //save with adjusted global (untiled) labels
    #pragma unroll
    for(int i = 0; i < WORKITEM_REPEAT_Y; ++i){
        #pragma unroll
        for(int j = 0; j < WORKITEM_REPEAT_X; ++j){
            const LabelT tile_label = new_labels[i][j];
            //convert the tile label into it's 2-D equivilent
            const uint g_r = (tile_label / tile_cols) + tile_col_start;
            const uint g_c = (tile_label % tile_cols) + tile_row_start;

            //adjust to global offset and convert to scanline order again - this is globally unique
            const LabelT glabel = g_r * im_cols + g_c;
            const bool valid_pixel_task = (g_c < im_cols) & (g_r < im_rows);
            if(valid_pixel_task){
                pixel_at(LabelT, labelim, g_r, g_c) = glabel;
            }
        }
    }
}

inline
LabelT find_root_global(const __global LabelT *labelim_p, uint labelim_pitch, LabelT label, const uint im_rows, const uint im_cols){
    for(;;){
        const uint y = label / im_cols;
        const uint x = label % im_cols;
        const LabelT parent = pixel_at(LabelT, labelim, y, x);

        if(label == parent){
            break;
        }

        label = parent;
    }
    return label;
}

__kernel void compact_paths_global(uint im_rows, uint im_cols, __global LabelT *labelim_p, uint labelim_pitch){
    const uint x = get_global_id(0);
    const uint y = get_global_id(1);

    if((x < im_cols) & (y < im_rows)){
        pixel_at(LabelT, labelim, y, x) = find_root_global(labelim_p, labelim_pitch, pixel_at(LabelT, labelim, y, x), im_rows, im_cols);
    }
}

inline
void merge_edge_labels(const uint im_rows, const uint im_cols, __global LabelT *labelim_p, const uint labelim_pitch, const LabelT l1, const LabelT l2, uint *changed){
    const LabelT r1 = find_root_global(labelim_p, labelim_pitch, l1, im_rows, im_cols);
    const LabelT r2 = find_root_global(labelim_p, labelim_pitch, l2, im_rows, im_cols);

    if(r1 == r2){
        return;
    }

    const LabelT mi = min(r1, r2);
    const LabelT ma = max(r1, r2);

    const uint y = ma / im_cols;
    const uint x = ma % im_cols;

    atomic_min(&pixel_at(LabelT, labelim, y, x), mi);
    *changed = true;
}

//merge along the adjacent pixels in the grid formed on the image with the following tiles
__kernel void merge_tiles(
    const uint im_rows, const uint im_cols,
    const uint n_vert_tiles, const uint n_horz_tiles,
    uint tile_rows, uint tile_cols,
    const __global ConnectivityPixelT *connectivityim_p, const uint connectivityim_pitch,
    __global LabelT *labelim_p, const uint labelim_pitch,
    const uint yIncomplete, uint xIncomplete
){
    const uint ngroups_x = get_num_groups(0);
    const uint ngroups_y = get_num_groups(1);

    const uint tid = get_local_linear_id();
    const uint stride = get_local_size(1) * get_local_size(0);

    const uint ybegin = get_group_id(1) * (n_vert_tiles * tile_rows);
    uint yend   = ybegin + n_vert_tiles * tile_rows;

    if(get_group_id(1) == ngroups_y - 1){
        yend -= yIncomplete * tile_rows;
        yend -= tile_rows;
        tile_rows = (im_rows % tile_rows);

        yend += tile_rows;
    }

    const uint xbegin = get_group_id(0) * n_horz_tiles * tile_cols;
    uint xend = xbegin + n_horz_tiles * tile_cols;

    if(get_group_id(0) == ngroups_x - 1){
        if (xIncomplete) yend = ybegin;
        xend -= xIncomplete * tile_cols;
        xend -= tile_cols;
        tile_cols = (im_cols % tile_cols);

        xend += tile_cols;
    }

    if(get_group_id(1) == (ngroups_y - 1) && yIncomplete){
        xend = xbegin;
    }

    const uint tasksV = (n_horz_tiles - 1) * (yend - ybegin);
    const uint tasksH = (n_vert_tiles - 1) * (xend - xbegin);

    const uint total = tasksH + tasksV;

    __local uint changed;
    uint pchanged;
    do{
        pchanged = false;
        for(uint taskIdx = tid; taskIdx < total; taskIdx += stride){
            if(taskIdx < tasksH){
                const uint indexH = taskIdx;

                const uint row = indexH / (xend - xbegin);
                const uint col = indexH % (xend - xbegin);

                const uint y = ybegin + (row + 1) * tile_rows;
                const uint x = xbegin + col;

                const ConnectivityPixelT e = pixel_at(ConnectivityPixelT, connectivityim, y, x);
                if(e & UP){
                    const LabelT lc = pixel_at(LabelT, labelim, y, x);
                    const LabelT lu = pixel_at(LabelT, labelim, y - 1, x);
                    merge_edge_labels(im_rows, im_cols, labelim_p, labelim_pitch, lc, lu, &pchanged);
                }
            }else{
                const uint indexV = taskIdx - tasksH;

                const uint col = indexV / (yend - ybegin);
                const uint row = indexV % (yend - ybegin);

                const uint x = xbegin + (col + 1) * tile_cols;
                const uint y = ybegin + row;

                const ConnectivityPixelT e = pixel_at(ConnectivityPixelT, connectivityim, y, x);
                if(e & LEFT){
                    const LabelT lc = pixel_at(LabelT, labelim, y, x);
                    const LabelT lu = pixel_at(LabelT, labelim, y, x - 1);
                    merge_edge_labels(im_rows, im_cols, labelim_p, labelim_pitch, lc, lu, &pchanged);
                }
            }
        }
        atomic_add(&changed, pchanged);
        lds_barrier();
        pchanged = changed;
    }while(pchanged);
}

#if 0
__kernel void mark_root_classes(
    uint im_rows, uint im_cols,
    __global PixelT *image_p, uint image_pitch,
    __global const LabelT* labelim_p, const uint labelim_pitch,
    __global uint* is_root_class_image_p, const uint is_root_class_image_pitch
){
    const uint c = get_global_id(0);
    const uint r = get_global_id(1);
    const bool valid_pixel_task = (c < im_cols) & (r < im_rows);

    const uint linear_index = c + r * im_cols;
    if(valid_pixel_task){
        const PixelT pixel = pixel_at(PixelT, image, r, c);
        const LabelT label = pixel_at(LabelT, labelim, r, c);
        pixel_at(uint, is_root_class_image, r, c) = (pixel != BG_VALUE) & (label == linear_index);
    }
}
#endif

#ifndef USE_CL2_WORKGROUP_FUNCTIONS
MAKE_WORK_GROUP_FUNCTIONS(uint, uint, 0U, UINT_MAX)
#endif

//root class inclusive prefix sums belonging to each compute unit given to each tile - note if narray_workers == 1, no merge step is necessary
//computes local prefix sums to get intra-wg blocksums, prefix sum that to get intra-wg offsets - this is needed to merge the final blocksums
//global dims: <wgs_per_histogram, n_tiles>, work_dims: <wg_size, 1>
//global blocksums[divUp(nblocks, blocks_per_wg)]
#ifdef PROMISE_WG_IS_WAVEFRONT
__attribute__((reqd_work_group_size(DEVICE_WAVEFRONT_SIZE, 1, 1)))
#endif
__kernel void mark_roots_and_make_intra_wg_block_local_prefix_sums(uint im_rows, uint im_cols,
    __global PixelT *image_p, uint image_pitch,
    __global const LabelT* labelim_p, const uint labelim_pitch,
    __global uint * restrict array_intra_wg_block_sums_p,
    __global uint * restrict array_prefix_sum_p, const uint array_prefix_sum_pitch
){
    const uint array_length = im_rows * im_cols;
    const uint array_wg_id = get_group_id(0);
    const uint narray_workers = get_num_groups(0);
    const uint wg_size = get_local_size(0);
    const uint block_size = wg_size;//efficient block size
    const uint nblocks = divUp(array_length, block_size);//number of efficiently processible blocks
    const uint nblocks_per_wg = nblocks / narray_workers;
    //const uint nblocks_to_merge = nblocks / nblocks_per_wg;
    const uint nblocks_remainder = nblocks - (narray_workers * nblocks_per_wg);
    const uint nblocks_to_left = nblocks_per_wg * array_wg_id + (array_wg_id < nblocks_remainder ? array_wg_id : nblocks_remainder);
    const uint n_wg_blocks = nblocks_per_wg + (array_wg_id < nblocks_remainder ? 1 : 0);

    const uint start_bin = nblocks_to_left * block_size;
    const uint end_bin_ = start_bin + n_wg_blocks * block_size;//block aligned end

    uint inter_block_sum = 0;

    for(uint linear_index = get_local_id(0) + start_bin; linear_index < end_bin_; linear_index += wg_size){
        const uint r = linear_index / im_cols;
        const uint c = linear_index % im_cols;

        uint count = 0;
        if(linear_index < array_length){
            const PixelT pixel = pixel_at(PixelT, image, r, c);
            const LabelT label = pixel_at(LabelT, labelim, r, c);
            count = (pixel != BG_VALUE) & (label == linear_index);
        }

#ifdef USE_CL2_WORKGROUP_FUNCTIONS
        uint block_prefix_sum_inclusive = work_group_scan_inclusive_add(count);
#else
        __local uint lmem[WORK_GROUP_FUNCTION_MAX_MEMORY_SIZE];
        uint block_prefix_sum_inclusive = clc_work_group_scan_inclusive_add_uint(count, lmem);
#endif

        block_prefix_sum_inclusive += inter_block_sum;
        if(linear_index < array_length){
            pixel_at(uint, array_prefix_sum, r, c) = block_prefix_sum_inclusive;
        }
#ifdef USE_CL2_WORKGROUP_FUNCTIONS
        inter_block_sum = work_group_broadcast(block_prefix_sum_inclusive, wg_size - 1);
#else
        __local uint value;
        inter_block_sum = clc_work_group_broadcast1_uint(block_prefix_sum_inclusive, wg_size - 1, &value);
#endif
    }
    if((array_intra_wg_block_sums_p != 0) & (get_local_id(0) == wg_size - 1)){
        array_intra_wg_block_sums_p[array_wg_id] = inter_block_sum;
    }
}

//exclusive prefix sums intra-wg blocksums to get intra-wg offsets - needed to merge together all the wg-local prefix sums
//global dims: <1, n_tiles>, work_dims: <wg_size, 1>
//global tile_intra_wg_block_sums[n_tiles][nblocks_to_merge]
#ifdef PROMISE_WG_IS_WAVEFRONT
__attribute__((reqd_work_group_size(DEVICE_WAVEFRONT_SIZE, 1, 1)))
#endif
__kernel void make_intra_wg_block_global_sums(
    __global uint * restrict intra_wg_block_sums_p, uint nblocks_to_merge
){
    const uint wg_size = get_local_size(0);

    __local uint intra_wg_block_sums[WG_SIZE_MAX + 1];
    if(get_local_id(0) == 0){
        intra_wg_block_sums[0] = 0;
    }
    lds_barrier();
    uint intra_wg_block_offset = 0;

    for(uint intra_wg_block_id = get_local_id(0); intra_wg_block_id < divUp(nblocks_to_merge, wg_size) * wg_size; intra_wg_block_id += wg_size){
        //get the unsumed blocksums
        const uint intra_wg_block_sum = intra_wg_block_id < nblocks_to_merge ? intra_wg_block_sums_p[intra_wg_block_id] : 0;
        intra_wg_block_sums[get_local_id(0) + 1] = intra_wg_block_sum;
        lds_barrier();

        const uint intra_wg_block_sum_delayed = intra_wg_block_sums[get_local_id(0)];
#ifdef USE_CL2_WORKGROUP_FUNCTIONS
        intra_wg_block_offset += work_group_scan_inclusive_add(intra_wg_block_sum_delayed);
#else
        __local uint lmem[WORK_GROUP_FUNCTION_MAX_MEMORY_SIZE];
        intra_wg_block_offset += clc_work_group_scan_inclusive_add_uint(intra_wg_block_sum_delayed, lmem);
#endif
        if(intra_wg_block_id < nblocks_to_merge){
            intra_wg_block_sums_p[intra_wg_block_id] = intra_wg_block_offset;
        }
#ifdef USE_CL2_WORKGROUP_FUNCTIONS
        intra_wg_block_offset = work_group_broadcast(intra_wg_block_offset, wg_size - 1);
#else
        __local uint value;
        intra_wg_block_offset = clc_work_group_broadcast1_uint(intra_wg_block_offset, wg_size - 1, &value);
#endif

        if(get_local_id(0) == 0){
            intra_wg_block_sums[0] = intra_wg_block_sums[wg_size];
        }
        lds_barrier();
    }
}

//merges global offsets of intra-wg-block offsets of prefix sums
//global dims: <wgs_per_sum>, work_dims: <wg_size> : wg_size >= nblocks_to_merge
//global array_of_prefix_sums[im_rows*im_cols] : as input partial sums, as output full prefix sum
#ifdef PROMISE_WG_IS_WAVEFRONT
__attribute__((reqd_work_group_size(DEVICE_WAVEFRONT_SIZE, 1, 1)))
#endif
__kernel void make_prefix_sums_with_intra_wg_block_global_sums(
        const uint im_rows, const uint im_cols,
        __global const uint * restrict intra_wg_block_sums_p,
        __global uint * restrict array_of_prefix_sums_p, uint array_of_prefix_sums_pitch //input -> partial/local prefix sums, output: global prefix sums
){
    const uint array_length = im_rows * im_cols;
    const uint n_arrays = get_num_groups(1);
    const uint array_id = get_group_id(1);
    const uint array_wg_id = get_group_id(0);
    const uint narray_workers = get_num_groups(0);
    const uint wg_size = get_local_size(0);
    const uint block_size = wg_size;//efficient block size
    const uint nblocks = divUp(array_length, block_size);//number of efficiently processible blocks
    const uint nblocks_per_wg = nblocks / narray_workers;
    const uint nblocks_to_merge = nblocks / nblocks_per_wg;
    const uint nblocks_remainder = nblocks - (narray_workers * nblocks_per_wg);
    const uint nblocks_to_left = nblocks_per_wg * array_wg_id + (array_wg_id < nblocks_remainder ? array_wg_id : nblocks_remainder);
    const uint n_wg_blocks = nblocks_per_wg + (array_wg_id < nblocks_remainder ? 1 : 0);

    const uint start_bin = nblocks_to_left * block_size;
    const uint end_bin_ = start_bin + n_wg_blocks * block_size;//block aligned end

    const uint inter_block_sum = intra_wg_block_sums_p[array_wg_id];
    for(uint array_index = get_local_id(0) + start_bin; array_index < end_bin_; array_index += wg_size){
        if(array_index < array_length){
            const uint g_r = array_index / im_cols;
            const uint g_c = array_index % im_cols;
            image_pixel_at(uint, array_of_prefix_sums_p, im_rows, im_cols, array_of_prefix_sums_pitch, g_r, g_c) += inter_block_sum;
            //note we could save a honest chunk of time by putting the relabeling here
        }
    }
}

__kernel void relabel_with_scanline_order(
    uint im_rows, uint im_cols,
    __global LabelT* labelim_out_p, const uint labelim_out_pitch,
    __global const PixelT* image_p, const uint image_pitch,
    __global const LabelT* labelim_p, const uint labelim_pitch,
    __global uint* scanline_prefix_sum_of_root_classes_p, const uint scanline_prefix_sum_of_root_classes_pitch
){
    const uint c = get_global_id(0);
    const uint r = get_global_id(1);
    const bool valid_pixel_task = (c < im_cols) & (r < im_rows);

    if(valid_pixel_task){
        const PixelT pixel = pixel_at(PixelT, image, r, c);
        LabelT final_label = 0;
        if(pixel != BG_VALUE){
            const LabelT label = pixel_at(LabelT, labelim, r, c);
            const uint label_r = label / im_cols;
            const uint label_c = label % im_cols;
            const uint scan_id = pixel_at(uint, scanline_prefix_sum_of_root_classes, label_r, label_c);
            final_label = scan_id + 1;
        }
        pixel_at(LabelT, labelim_out, r, c) = final_label;
    }
}


INTEGRATION: CWS dr44 (1.1.1.1.1032); FILE MERGED 2006/01/09 19:05:30 er 1.1.1.1.1032.1: #i54546# get rid of duplicated strings not needed for translation anyway and generate a .c file containing at least the English strings

/*************************************************************************
 *
 *  OpenOffice.org - a multi-platform office productivity suite
 *
 *  $RCSfile: rot13.cl,v $
 *
 *  $Revision: 1.2 $
 *
 *  last change: $Author: kz $ $Date: 2006-01-31 18:33:56 $
 *
 *  The Contents of this file are made available subject to
 *  the terms of GNU Lesser General Public License Version 2.1.
 *
 *
 *    GNU Lesser General Public License Version 2.1
 *    =============================================
 *    Copyright 2005 by Sun Microsystems, Inc.
 *    901 San Antonio Road, Palo Alto, CA 94303, USA
 *
 *    This library is free software; you can redistribute it and/or
 *    modify it under the terms of the GNU Lesser General Public
 *    License version 2.1, as published by the Free Software Foundation.
 *
 *    This library is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *    Lesser General Public License for more details.
 *
 *    You should have received a copy of the GNU Lesser General Public
 *    License along with this library; if not, write to the Free Software
 *    Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 *    MA  02111-1307  USA
 *
 ************************************************************************/

static char rot13_Id[]="@(#) StarCalc Rot13 AddIn (c) 1998-2000 Sun Microsystems, Inc.";

#include <string.h>
#include <stdio.h>

#include <xlang.h>
#include <addin.h>
#include <rot13.hrc>

/**
 * the current language the Addin is using
 */
static USHORT _nLanguage=LANGUAGE_ENGLISH;

/**
 * StarCalc calls this function to set a new current Language for the Addin
 *
 * @param *nLanguage
 *
 */
void CALLTYPE SetLanguage( USHORT* nLanguage )
{
	_nLanguage = GetNeutralLanguage( *nLanguage );
}

/**
 * Tell StarCalc how many new functions this Addin provides.
 *
 * @param *nCount - returns the number of functions which are exported to StarCalc
 *
 */
void CALLTYPE GetFunctionCount( USHORT *nCount )
{
    *nCount = 1;
}

/**
 * Provides neccessary data for each new function to StarCalc
 *
 * @param *nNo Input: Function number between 0 and nCount - 1
 * @param *pFuncName Output: Functionname which should be called in the AddIn-DLL
 * @param *nParamCount Output: Number of Parameter. Must be greater than 0, because there's always a return-Value. Maximum is 16.
 * @param *peType Output: Pointer to arrray with exactly 16 variables of typ Paramtype. nParamCount Entries are set to the type of the corresponding Parameters.
 * @param *pInternalName Output: Functionname as seen by the Spreadsheet user
 *
 * @see #GetFunctionCount, #GetParameterDescription
 *
 */
void CALLTYPE GetFunctionData( USHORT *    nNo,
			       char *      pFuncName,
			       USHORT *    nParamCount,
			       ParamType * peType,
			       char *      pInternalName )
{

    switch( *nNo ) {
	case 0:
	    /* the function name is the same in all languages */
	    SO_StringCopy( pInternalName, "Rot13" );
	    SO_StringCopy( pFuncName,     "Rot13" );
	    peType[0] = PTR_STRING;
	    peType[1] = PTR_STRING;
	    *nParamCount=2;
	    break;
	 default:
	    *nParamCount    = 0;
	    *pFuncName     = 0;
	    *pInternalName = 0;
	    break;
    }
}

/**
 * Provides descriptions for each new function to StarCalc
 * which are shown is the autopilot
 *
 * @param *nNo Input Parameter, Function number between 0 and nCount - 1
 * @param *nParam Parameter Number
 * @param *pName Output: Name of the parameter
 * @param *pDesc Output: Description of the parameter
 *
 * @see #GetFunctionCount, #GetParameterDescription
 */
void CALLTYPE GetParameterDescription( USHORT* nNo, USHORT* nParam,
char* pName, char* pDesc )
{
	*pName = 0;
	*pDesc = 0;

	switch ( *nNo ) {
	case 0:
		switch ( *nParam ) {
		case 0:
			SO_StringCopy(pDesc,getText(ROT13_DESC));
			break;
		case 1:
			SO_StringCopy(pName,getText(ROT13_PAR1_NAME));
			SO_StringCopy(pDesc,getText(ROT13_PAR1_DESC));
		}
	}
}

/**
 * ROT13 Algorithm, each alphabetical character of the text is rotated by 13 in the alphabet
 *
 * @param *ret
 * @param *src
 *
 * ER: well, my personal favorite algorithm is
 * main(_){while(_=~getchar())putchar(~_-1/(~(_|32)/13*2-11)*13);}
 * but for clarification we do it somehow different here ;-)
 */
void CALLTYPE Rot13(char *ret, char *src)
{
    if ( ! ret ) return;
    if ( ! src ) *ret='\0';

    for(;src && *src; src++ , ret++) {
	*ret=*src;
	if (*ret >= 'A' && *ret <= 'Z') {
	    if ( (*ret +=13) > 'Z' ) *ret-=26;
	} else if (*ret >= 'a' && *ret < 'n') {
	    *ret +=13;
	} else if (*ret >= 'n' && *ret <= 'z') {
	    *ret -=13;
	}
    }
    *ret=*src;
}

/*------------------------------------------------------------------------

$Workfile:   ROT13.CL  $

$Header: /zpool/svn/migration/cvs_rep_09_09_08/code/sc/addin/rot13/rot13.cl,v 1.1.1.1 2000-09-18 16:44:46 hr Exp $

Description:    StarCalc ROT13 AddIn Example

(c) Copyright 1998 - 2000, Sun Microsystems, Inc.

------------------------------------------------------------------------*/

static char rot13_Id[]="@(#) StarCalc Rot13 AddIn (c) 1998-2000 Sun Microsystems, Inc.";

#include <string.h>
#include <stdio.h>

#include <xlang.h>
#include <addin.h>
#include <rot13.hrc>

/**
 * the current language the Addin is using
 */
static USHORT _nLanguage=LANGUAGE_ENGLISH;

/**
 * StarCalc calls this function to set a new current Language for the Addin
 *
 * @param *nLanguage
 *
 */
void CALLTYPE SetLanguage( USHORT* nLanguage )
{
	_nLanguage = GetNeutralLanguage( *nLanguage );
}

/**
 * Tell StarCalc how many new functions this Addin provides.
 *
 * @param *nCount - returns the number of functions which are exported to StarCalc
 *
 */
void CALLTYPE GetFunctionCount( USHORT *nCount )
{
    *nCount = 1;
}

/**
 * Provides neccessary data for each new function to StarCalc
 *
 * @param *nNo Input: Function number between 0 and nCount - 1
 * @param *pFuncName Output: Functionname which should be called in the AddIn-DLL
 * @param *nParamCount Output: Number of Parameter. Must be greater than 0, because there's always a return-Value. Maximum is 16.
 * @param *peType Output: Pointer to arrray with exactly 16 variables of typ Paramtype. nParamCount Entries are set to the type of the corresponding Parameters.
 * @param *pInternalName Output: Functionname as seen by the Spreadsheet user
 *
 * @see #GetFunctionCount, #GetParameterDescription
 *
 */
void CALLTYPE GetFunctionData( USHORT *    nNo,
			       char *      pFuncName,
			       USHORT *    nParamCount,
			       ParamType * peType,
			       char *      pInternalName )
{

    switch( *nNo ) {
	case 0:
	    /* the function name is the same in all languages */
	    SO_StringCopy( pInternalName, "Rot13" );
	    SO_StringCopy( pFuncName,     "Rot13" );
	    peType[0] = PTR_STRING;
	    peType[1] = PTR_STRING;
	    *nParamCount=2;
	    break;
	 default:
	    *nParamCount    = 0;
	    *pFuncName     = 0;
	    *pInternalName = 0;
	    break;
    }
}

/**
 * Provides descriptions for each new function to StarCalc
 * which are shown is the autopilot
 *
 * @param *nNo Input Parameter, Function number between 0 and nCount - 1
 * @param *nParam Parameter Number
 * @param *pName Output: Name of the parameter
 * @param *pDesc Output: Description of the parameter
 *
 * @see #GetFunctionCount, #GetParameterDescription
 */
void CALLTYPE GetParameterDescription( USHORT* nNo, USHORT* nParam,
char* pName, char* pDesc )
{
	*pName = 0;
	*pDesc = 0;

	switch ( *nNo ) {
	case 0:
		switch ( *nParam ) {
		case 0:
			SO_StringCopy(pDesc,getText(ROT13_DESC));
			break;
		case 1:
			SO_StringCopy(pName,getText(ROT13_PAR1_NAME));
			SO_StringCopy(pDesc,getText(ROT13_PAR1_DESC));
		}
	}
}

/**
 * ROT13 Algorithm, each alphabetical character of the text is rotated by 13 in the alphabet
 *
 * @param *ret
 * @param *src
 *
 * ER: well, my personal favorite algorithm is
 * main(_){while(_=~getchar())putchar(~_-1/(~(_|32)/13*2-11)*13);}
 * but for clarification we do it somehow different here ;-)
 */
void CALLTYPE Rot13(char *ret, char *src)
{
    if ( ! ret ) return;
    if ( ! src ) *ret='\0';

    for(;src && *src; src++ , ret++) {
	*ret=*src;
	if (*ret >= 'A' && *ret <= 'Z') {
	    if ( (*ret +=13) > 'Z' ) *ret-=26;
	} else if (*ret >= 'a' && *ret < 'n') {
	    *ret +=13;
	} else if (*ret >= 'n' && *ret <= 'z') {
	    *ret -=13;
	}
    }
    *ret=*src;
}

/*------------------------------------------------------------------------

$Log: not supported by cvs2svn $
Revision 1.5  1999/08/10 12:48:46  NN
#68039# copyright

      Rev 1.4   10 Aug 1999 14:48:46   NN
   #68039# copyright

      Rev 1.3   29 Apr 1999 14:56:48   ER
   #57689# xlang.h statt tools/lang.hxx

      Rev 1.3   29 Apr 1999 14:45:08   ER
   #57689# xlang.hxx statt tools/lang.hxx

      Rev 1.2   29 Apr 1999 12:53:30   ER
   #57689# Internationalisierung

      Rev 1.1   15 Mar 1999 16:47:12   HJS
   aufgeraeumt

      Rev 1.0   10 Mar 1999 12:07:18   BEI
   Initial revision.

      Rev 1.2   13 Jul 1998 17:57:16   BEI
   2 Languages

      Rev 1.1   09 Jul 1998 09:00:50   TRI
   keine C++ Kommentar in C Files

      Rev 1.0   07 Jul 1998 20:36:36   NN
   Initial revision.

------------------------------------------------------------------------*/


Force double precision.

Force double precision.

It turns out CLISP ignores the double precision directive when compiling, so
explicitly make all floats doubles.

; PI Common LISP example.

(defvar n 5000000)

; This likely only works in GNU Common LISP.
(if (> (list-length *args*) 0)
  (setq n (parse-integer (car *args*)))
)

(format t "Calculating PI using~%")
(format t "  ~a slices~%" n)
(format t "  1 process~%")

; get-internal-real-time gets time from some arbitrary, implementation
; dependent starting point in some fraction of a second.
(defvar start (get-internal-real-time))

(defvar sum 0.d0)
(defvar st (/ 1.d0 n))
(defvar x 0.d0)

(loop for i from 1 to n do
; In Common LISP we have to enclose multi-line dos in a block.
  (block inner
    (setq x (* (- i 0.d5) st))
    (setq sum (+ sum (/ 4.d0 (+ 1.d0 (* x x)))))
  )
)

(defvar p (* sum st))

(defvar stop (get-internal-real-time))

; get-internal-real-time is in some platform specific unit which we can find in
; internal-time-units-per-second
(defvar runt (/ (- stop start) internal-time-units-per-second))

(format t "Obtained value of PI: ~a~%" p)

; We have to print the time with ~f to force a float output.
(format t "Time taken: ~f seconds~%" runt)

; PI Common LISP example.

(defvar n 5000000)

; Set double precision.
(setf *read-default-float-format* 'double-float)

; This likely only works in GNU Common LISP.
(if (> (list-length *args*) 0)
  (setq n (parse-integer (car *args*)))
)

(format t "Calculating PI using~%")
(format t "  ~a slices~%" n)
(format t "  1 process~%")

; get-internal-real-time gets time from some arbitrary, implementation
; dependent starting point in some fraction of a second.
(defvar start (get-internal-real-time))

(defvar sum 0.0)
(defvar st (/ 1.0 n))
(defvar x 0.0)

(loop for i from 1 to n do
; In Common LISP we have to enclose multi-line dos in a block.
  (block inner
    (setq x (* (- i 0.5) st))
    (setq sum (+ sum (/ 4.0 (+ 1.0 (* x x)))))
  )
)

(defvar p (* sum st))

(defvar stop (get-internal-real-time))

; get-internal-real-time is in some platform specific unit which we can find in
; internal-time-units-per-second
(defvar runt (/ (- stop start) internal-time-units-per-second))

(format t "Obtained value of PI: ~a~%" p)

; We have to print the time with ~f to force a float output.
(format t "Time taken: ~f seconds~%" runt)