Function rotate_8uc1_counterclockwise

dnn/src/armv7/rotate/opr_impl.cpp:224–250

}

void rotate_8uc1_counterclockwise(
        const uchar* src, uchar* dst, const size_t rows, const size_t cols,
        const size_t src_step, const size_t dst_step) {
    const size_t block = 16;
    (void)block;
    size_t i = 0;

    for (; i + block <= rows; i += block) {
        size_t j = 0;
        for (; j + block <= cols; j += block) {
            rotate_8uc1_counterclockwise_16x16(
                    src + i * src_step + j, dst + (cols - (j + block)) * dst_step + i,
                    src_step, dst_step);
        }
        for (; j < cols; ++j) {
            for (size_t k = 0; k < block; ++k) {
                dst[(cols - 1 - j) * dst_step + (i + k)] = src[(i + k) * src_step + j];
            }
        }
    }

    for (; i < rows; ++i) {
        for (size_t j = 0; j < cols; ++j) {
            dst[(cols - 1 - j) * dst_step + i] = src[i * src_step + j];
        }
    }
}

void rotate(const Mat<uchar>& src, Mat<uchar>& dst, bool clockwise) {
    megdnn_assert(src.rows() == dst.cols());