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Merge pull request #25936 from savuor:rv/hal_dot

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HAL for dot product added #25936

### Pull Request Readiness Checklist

See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request

- [x] I agree to contribute to the project under Apache 2 License.
- [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV
- [x] The PR is proposed to the proper branch
- [ ] There is a reference to the original bug report and related work
- [ ] There is accuracy test, performance test and test data in opencv_extra repository, if applicable
      Patch to opencv_extra has the same branch name.
- [x] The feature is well documented and sample code can be built with the project CMake
This commit is contained in:
Rostislav Vasilikhin 2024-07-23 07:06:15 +02:00 committed by GitHub
parent c9b57819b1
commit 44c814e334
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2 changed files with 31 additions and 1 deletions
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21
modules/core/src/hal_replacement.hpp
View File

@ -899,6 +899,27 @@ inline int hal_ni_meanStdDev(const uchar* src_data, size_t src_step, int width,
#define cv_hal_meanStdDev hal_ni_meanStdDev
//! @endcond
/**
* @brief calculates dot product of two vectors (represented as 2d images)
*
* @param a_data Pointer to 1st 2nd image data
* @param a_step Stride of 1st 2nd image
* @param b_data Pointer to 1st 2nd image data
* @param b_step Stride of 1st 2nd image
* @param width Width of both images
* @param height Height of both images
* @param type Data type of both images, for example CV_8U or CV_32F
* @param dot_val Pointer to resulting dot product value
* @return int
*/
inline int hal_ni_dotProduct(const uchar* a_data, size_t a_step, const uchar* b_data, size_t b_step, int width, int height,
int type, double *dot_val)
{ return CV_HAL_ERROR_NOT_IMPLEMENTED; }
//! @cond IGNORED
#define cv_hal_dotProduct hal_ni_dotProduct
//! @endcond
/**
@brief hal_flip
@param src_type source and destination image type

11
modules/core/src/matmul.dispatch.cpp
View File

@ -995,9 +995,18 @@ double Mat::dot(InputArray _mat) const
CV_INSTRUMENT_REGION();
Mat mat = _mat.getMat();
CV_Assert_N( mat.type() == type(), mat.size == size);
int cn = channels();
if (this->dims <= 2)
{
double product = 0;
CALL_HAL_RET(dotProduct, cv_hal_dotProduct, product, this->data, this->step, mat.data, mat.step,
this->cols * cn, this->rows, this->depth());
}
DotProdFunc func = getDotProdFunc(depth());
CV_Assert_N( mat.type() == type(), mat.size == size, func != 0 );
CV_Assert(func != 0 );
if( isContinuous() && mat.isContinuous() )
{