Add FastCV DSP Initialization, QcAllocator and FastCV DSP Extension APIs

modules/fastcv/include/opencv2/fastcv.hpp

@@ -30,6 +30,13 @@
 #include "opencv2/fastcv/thresh.hpp"
 #include "opencv2/fastcv/tracking.hpp"
 #include "opencv2/fastcv/warp.hpp"
+#include "opencv2/fastcv/allocator.hpp"
+#include "opencv2/fastcv/dsp_init.hpp"
+#include "opencv2/fastcv/sad_dsp.hpp"
+#include "opencv2/fastcv/thresh_dsp.hpp"
+#include "opencv2/fastcv/fft_dsp.hpp"
+#include "opencv2/fastcv/edges_dsp.hpp"
+#include "opencv2/fastcv/blur_dsp.hpp"
 
 /**
  * @defgroup fastcv Module-wrapper for FastCV hardware accelerated functions

modules/fastcv/include/opencv2/fastcv/allocator.hpp

@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 2025 Qualcomm Innovation Center, Inc. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0
+*/
+
+#ifndef OPENCV_FASTCV_ALLOCATOR_HPP
+#define OPENCV_FASTCV_ALLOCATOR_HPP
+
+#include <opencv2/core.hpp>
+#include <set>
+#include <mutex>
+
+namespace cv {
+namespace fastcv {
+
+//! @addtogroup fastcv
+//! @{
+
+/**
+ * @brief Resource manager for FastCV allocations.
+ * This class manages active allocations.
+ */
+class QcResourceManager {
+public:
+    static QcResourceManager& getInstance();
+
+    void addAllocation(void* ptr);
+    void removeAllocation(void* ptr);
+
+private:
+    QcResourceManager() = default;
+    std::set<void*> activeAllocations;
+    std::mutex resourceMutex;
+};
+
+/**
+ * @brief Qualcomm's custom allocator.
+ * This allocator uses Qualcomm's memory management functions.
+ */
+class QcAllocator : public cv::MatAllocator {
+    public:
+        QcAllocator();
+        ~QcAllocator();
+
+        cv::UMatData* allocate(int dims, const int* sizes, int type, void* data0, size_t* step, cv::AccessFlag flags, cv::UMatUsageFlags usageFlags) const CV_OVERRIDE;
+        bool allocate(cv::UMatData* u, cv::AccessFlag accessFlags, cv::UMatUsageFlags usageFlags) const CV_OVERRIDE;
+        void deallocate(cv::UMatData* u) const CV_OVERRIDE;
+};
+
+/**
+ * @brief Gets the default Qualcomm's allocator.
+ * This function returns a pointer to the default Qualcomm's allocator, which is optimized
+ * for use with DSP.
+ *
+ * @return Pointer to the default FastCV allocator.
+ */
+CV_EXPORTS cv::MatAllocator* getQcAllocator();
+
+//! @}
+
+} // namespace fastcv
+} // namespace cv
+
+#endif // OPENCV_FASTCV_ALLOCATOR_HPP

modules/fastcv/include/opencv2/fastcv/blur_dsp.hpp

@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2025 Qualcomm Innovation Center, Inc. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0
+*/
+
+#ifndef OPENCV_FASTCV_BLUR_DSP_HPP
+#define OPENCV_FASTCV_BLUR_DSP_HPP
+
+#include <opencv2/core.hpp>
+
+namespace cv {
+namespace fastcv {
+namespace dsp {
+/**
+ * @defgroup fastcv Module-wrapper for FastCV hardware accelerated functions
+ */
+
+/**
+ * @brief Filter an image with non-separable kernel
+ * @param _src Intput image with type CV_8UC1, src size should be greater than 176*144
+ * @param _dst Output image with type CV_8UC1, CV_16SC1 or CV_32FC1
+ * @param ddepth The depth of output image
+ * @param _kernel Filer kernel data
+ *
+ * @sa Filter2D
+ */
+CV_EXPORTS_W void filter2D(InputArray _src, OutputArray _dst, int ddepth, InputArray _kernel);
+
+//! @}
+} // dsp::
+} // fastcv::
+} // cv::
+
+#endif // OPENCV_FASTCV_BLUR_DSP_HPP

modules/fastcv/include/opencv2/fastcv/dsp_init.hpp

@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2025 Qualcomm Innovation Center, Inc. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0
+*/
+
+#ifndef OPENCV_FASTCV_DSP_INIT_HPP
+#define OPENCV_FASTCV_DSP_INIT_HPP
+
+#include <opencv2/core.hpp>
+
+namespace cv {
+namespace fastcv {
+namespace dsp {
+
+//! @addtogroup fastcv
+//! @{
+
+/**
+ * @brief Initializes the FastCV DSP environment.
+ * 
+ * This function sets up the necessary environment and resources for the DSP to operate.
+ * It must be called once at the very beginning of the use case or program to ensure that 
+ * the DSP is properly initialized before any DSP-related operations are performed.
+ *
+ * @note This function must be called at the start of the use case or program, before any 
+ *       DSP-related operations.
+ * 
+ * @return int Returns 0 on success, and a non-zero value on failure.
+ */
+CV_EXPORTS_W int fcvdspinit();
+
+/**
+ * @brief Deinitializes the FastCV DSP environment.
+ * 
+ * This function releases the resources and environment set up by the 'fcvdspinit' function.
+ * It should be called before the use case or program exits to ensure that all DSP resources 
+ * are properly cleaned up and no memory leaks occur.
+ *
+ * @note This function must be called at the end of the use case or program, after all DSP-related 
+ *       operations are complete.
+ */
+CV_EXPORTS_W void fcvdspdeinit();
+//! @}
+
+} // dsp::
+} // fastcv::
+} // cv::
+
+#endif // OPENCV_FASTCV_DSP_INIT_HPP

modules/fastcv/include/opencv2/fastcv/edges_dsp.hpp

@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2025 Qualcomm Innovation Center, Inc. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0
+*/
+
+#ifndef OPENCV_FASTCV_EDGES_DSP_HPP
+#define OPENCV_FASTCV_EDGES_DSP_HPP
+
+#include "opencv2/core/mat.hpp"
+
+namespace cv {
+namespace fastcv {
+namespace dsp {
+
+/**
+* @defgroup fastcv Module-wrapper for FastCV hardware accelerated functions
+*/
+
+//! @addtogroup fastcv
+//! @{
+
+/**
+ * @brief Canny edge detector applied to a 8 bit grayscale image
+ * @param _src          Input image with type CV_8UC1
+ * @param _dst          Output 8-bit image containing the edge detection results
+ * @param lowThreshold  First threshold
+ * @param highThreshold Second threshold
+ * @param apertureSize  The Sobel kernel size for calculating gradient. Supported sizes are 3, 5 and 7.
+ * @param L2gradient    L2 Gradient or L1 Gradient
+*/
+CV_EXPORTS_W void canny(InputArray _src, OutputArray _dst, int lowThreshold, int highThreshold, int apertureSize = 3, bool L2gradient = false);
+//! @}
+
+} // dsp::
+} // fastcv::
+} // cv::
+
+#endif //OPENCV_FASTCV_EDGES_DSP_HPP

modules/fastcv/include/opencv2/fastcv/fft_dsp.hpp

@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2025 Qualcomm Innovation Center, Inc. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0
+*/
+
+#ifndef OPENCV_FASTCV_FFT_DSP_HPP
+#define OPENCV_FASTCV_FFT_DSP_HPP
+
+#include <opencv2/core.hpp>
+
+namespace cv {
+namespace fastcv {
+namespace dsp {
+
+//! @addtogroup fastcv
+//! @{
+
+/**
+* @brief Computes the 1D or 2D Fast Fourier Transform of a real valued matrix.
+        For the 2D case, the width and height of the input and output matrix must be powers of 2.
+        For the 1D case, the height of the matrices must be 1, while the width must be a power of 2.
+
+* @param src Input array of CV_8UC1. The dimensions of the matrix must be powers of 2 for the 2D case,
+            and in the 1D case, the height must be 1, while the width must be a power of 2.
+* @param dst The computed FFT matrix of type CV_32FC2. The FFT Re and Im coefficients are stored in different channels.
+            Hence the dimensions of the dst are (srcWidth, srcHeight)
+*/
+CV_EXPORTS_W void FFT(InputArray src, OutputArray dst);
+
+/**
+* @brief Computes the 1D or 2D Inverse Fast Fourier Transform of a complex valued matrix.
+        For the 2D case, The width and height of the input and output matrix must be powers of 2.
+        For the 1D case, the height of the matrices must be 1, while the width must be a power of 2.
+
+* @param src Input array of type CV_32FC2 containing FFT Re and Im coefficients stored in separate channels.
+            The dimensions of the matrix must be powers of 2 for the 2D case, and in the 1D case, the height must be 1,
+            while the width must be a power of 2.
+* @param dst The computed IFFT matrix of type CV_8U. The matrix is real valued and has no imaginary components.
+            Hence the dimensions of the dst are (srcWidth , srcHeight)
+*/
+CV_EXPORTS_W void IFFT(InputArray src, OutputArray dst);
+
+//! @}
+
+} // dsp::
+} // fastcv::
+} // cv::
+
+#endif // OPENCV_FASTCV_FFT_DSP_HPP

modules/fastcv/include/opencv2/fastcv/sad_dsp.hpp

@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2025 Qualcomm Innovation Center, Inc. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0
+*/
+
+#ifndef OPENCV_FASTCV_SAD_HPP
+#define OPENCV_FASTCV_SAD_HPP
+
+#include <opencv2/core.hpp>
+
+namespace cv {
+namespace fastcv {
+namespace dsp {
+
+/**
+ * @defgroup fastcv Module-wrapper for FastCV hardware accelerated functions
+ */
+
+//! @addtogroup fastcv
+//! @{
+/**
+ * @brief Sum of absolute differences of an image against an 8x8 template.
+ * @param _patch The first input image data, type CV_8UC1
+ * @param _src The input image data, type CV_8UC1
+ * @param _dst The output image data, type CV_16UC1
+*/
+CV_EXPORTS_W void sumOfAbsoluteDiffs(cv::InputArray _patch, cv::InputArray _src, cv::OutputArray _dst);
+//! @}
+
+} // dsp::
+} // fastcv::
+} // cv::
+
+#endif // OPENCV_FASTCV_SAD_HPP

modules/fastcv/include/opencv2/fastcv/thresh_dsp.hpp

@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2025 Qualcomm Innovation Center, Inc. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0
+*/
+
+#ifndef OPENCV_FASTCV_THRESH_DSP_HPP
+#define OPENCV_FASTCV_THRESH_DSP_HPP
+
+#include <opencv2/core.hpp>
+
+namespace cv {
+namespace fastcv {
+namespace dsp {
+
+    //! @addtogroup fastcv
+    //! @{
+
+    /**
+     * @brief Binarizes a grayscale image using Otsu's method.
+     *        Sets the pixel to max(255) if it's value is greater than the threshold;
+     *        else, set the pixel to min(0). The threshold is searched that minimizes
+     *        the intra-class variance (the variance within the class).
+     * 
+     * @param _src Input 8-bit grayscale image. Size of buffer is srcStride*srcHeight bytes.
+     * @param _dst Output 8-bit binarized image. Size of buffer is dstStride*srcHeight bytes.
+     * @param type Threshold type that can be either 0 or 1.
+     *             NOTE: For threshold type=0, the pixel is set as
+     *             maxValue if it's value is greater than the threshold; else, it is set as zero.
+     *             For threshold type=1, the pixel is set as zero if it's
+     *             value is greater than the threshold; else, it is set as maxValue.
+     */
+    CV_EXPORTS_W void thresholdOtsu(InputArray _src, OutputArray _dst, bool type);
+
+    //! @}
+} // dsp::
+} // fastcv::
+} // cv::
+
+#endif // OPENCV_FASTCV_THRESH_DSP_HPP