int ovx_hal_medianBlur(const uchar* src_data, size_t src_step, uchar* dst_data, size_t dst_step, int width, int height, int depth, int cn, int ksize);

int ovx_hal_sobel(const uchar* src_data, size_t src_step, uchar* dst_data, size_t dst_step, int width, int height, int src_depth, int dst_depth, int cn, int margin_left, int margin_top, int margin_right, int margin_bottom, int dx, int dy, int ksize, double scale, double delta, int border_type);

int ovx_hal_canny(const uchar* src_data, size_t src_step, uchar* dst_data, size_t dst_step,

int width, int height, int cn, double lowThreshold, double highThreshold, int ksize, bool L2gradient);

int ovx_hal_pyrdown(const uchar* src_data, size_t src_step, int src_width, int src_height,

uchar* dst_data, size_t dst_step, int dst_width, int dst_height, int depth, int cn, int border_type);

int ovx_hal_boxFilter(const uchar* src_data, size_t src_step, uchar* dst_data, size_t dst_step,

int width, int height, int src_depth, int dst_depth, int cn,

int margin_left, int margin_top, int margin_right, int margin_bottom,

size_t ksize_width, size_t ksize_height, int anchor_x, int anchor_y, bool normalize, int border_type);

int ovx_hal_equalize_hist(const uchar* src_data, size_t src_step, uchar* dst_data, size_t dst_step, int width, int height);

int ovx_hal_gaussianBlur(const uchar* src_data, size_t src_step, uchar* dst_data, size_t dst_step, int width, int height,

int depth, int cn, size_t margin_left, size_t margin_top, size_t margin_right, size_t margin_bottom,

size_t ksize_width, size_t ksize_height, double sigmaX, double sigmaY, int border_type);

int ovx_hal_remap32f(int src_type, const uchar *src_data, size_t src_step, int src_width, int src_height,

uchar *dst_data, size_t dst_step, int dst_width, int dst_height,

float* mapx, size_t mapx_step, float* mapy, size_t mapy_step,

int interpolation, int border_type, const double border_value[4]);

int ovx_hal_threshold(const uchar* src_data, size_t src_step, uchar* dst_data, size_t dst_step,

int width, int height, int depth, int cn, double thresh, double maxValue, int thresholdType);

/// Convert cv::Mat type to standard image format (fourcc), throws WrapperError if not possible

static vx_df_image matTypeToFormat(int matType)

{

switch (matType)

{

case CV_8UC4: return VX_DF_IMAGE_RGBX;

case CV_8UC3: return VX_DF_IMAGE_RGB;

case CV_8UC1: return VX_DF_IMAGE_U8;

case CV_16UC1: return VX_DF_IMAGE_U16;

case CV_16SC1: return VX_DF_IMAGE_S16;

case CV_32SC1: return VX_DF_IMAGE_S32;

case CV_32FC1: return VX_DF_IMAGE('F', '0', '3', '2');

default: throw WrapperError(std::string(__func__)+"(): unsupported cv::Mat type");

}

}

void setMappings(vx_float32* map_x, size_t map_x_stride, vx_float32* map_y, size_t map_y_stride)

{

for (vx_uint32 y = 0; y < dstHeight(); y++)

{

const vx_float32* map_x_line = (vx_float32*)((char*)map_x + y*map_x_stride);

const vx_float32* map_y_line = (vx_float32*)((char*)map_y + y*map_y_stride);

for (vx_uint32 x = 0; x < dstWidth(); x++)

setMapping(x, y, map_x_line[x], map_y_line[x]);

}

}

void setMappings(vx_float32* map, size_t map_stride)

{

for (vx_uint32 y = 0; y < dstHeight(); y++)

{

const vx_float32* map_line = (vx_float32*)((char*)map + y*map_stride);

for (vx_uint32 x = 0; x < 2*dstWidth(); x+=2)

setMapping(x, y, map_line[x], map_line[x+1]);

}

}