评估 FastCV 加速

DEPENDS:qcom-custom-bsp += "qcom-fastcv-binaries"

EXTRA_OECMAKE += "-DOPENCV_ALLOW_DOWNLOADS=ON"
EXTRA_OECMAKE:append:qcom-custom-bsp = " -DWITH_FASTCV=ON "
#python () {

DEPENDS:qcom-custom-bsp += "qcom-fastcv-binaries"

EXTRA_OECMAKE:append:qcom-custom-bsp = " -DWITH_FASTCV=OFF "
#python () {
#    bsp_type = d.getVar('BSP_TYPE')

if(NOT WITH_FASTCV OR NOT FASTCV_DIR)
   message(STATUS "FastCV is not available, disabling related HAL and stuff")
   return()
endif()

if(NOT ANDROID AND NOT UNIX)
   message(FATAL_ERROR "FastCV HAL supports Android and UNIX only!")
endif()

set(OPENCV_3P_FASTCV_DIR ${CMAKE_CURRENT_SOURCE_DIR})
add_subdirectory(hal)

int fastcv_hal_sub8u32f(
    const uchar*    src1_data,
    size_t          src1_step,
    const uchar*    src2_data,
    size_t          src2_step,
    float*          dst_data,
    size_t          dst_step,
    int             width,
    int             height)
{
    INITIALIZATION_CHECK;

    fcvStatus status = FASTCV_SUCCESS;

    if (src1_step < width && src2_step < width)
    {
       src1_step = width*sizeof(uchar);
       src2_step = width*sizeof(uchar);
       dst_step  = width*sizeof(float);
    }

    status = fcvImageDiffu8f32_v2(src1_data, src2_data, width, height, src1_step,
                                  src2_step, dst_data, dst_step);

    CV_HAL_RETURN(status,hal_subtract);
}