Android Studio链接OpenCV静态库

目前我正在开发一个使用OpenCV3进行实时视频处理(应用一组彩色滤镜)的项目,我设法让它与 Java一起使用而没有任何问题.

我接下来要做的是通过NDK将所有Java逻辑实现到C(以提高性能).这样我就不需要将MAT对象转换回字节缓冲区和堡垒,从而节省了几个周期.但我真的很难尝试使用gradle链接.so,.a静态库和头文件,以便在我的.CPP文件上使用.

这是我正在使用的gradle文件：

apply plugin: 'com.android.model.application'

def opencvandroid_sdk_path = file(project(':opencvandroid').projectDir).absolutePath + "/src/main"

model {

    repositories {
        libs(PrebuiltLibraries) {
            opencv {
                headers.srcDir "${opencvandroid_sdk_path}/jni/include/opencv2"
                binaries.withType(StaticLibraryBinary) {
                    staticLibraryFile = file("${opencvandroid_sdk_path}/jniLibs/${targetPlatform.getName()}/libopencv_calib3d.a")
                }
            }

            opencv1 {
                headers.srcDir "${opencvandroid_sdk_path}/jni/include/opencv2"
                binaries.withType(StaticLibraryBinary) {
                    staticLibraryFile = file("${opencvandroid_sdk_path}/jniLibs/${targetPlatform.getName()}/libopencv_core.a")
                }
            }

            opencv2 {
                headers.srcDir "${opencvandroid_sdk_path}/jni/include/opencv2"
                binaries.withType(StaticLibraryBinary) {
                    staticLibraryFile = file("${opencvandroid_sdk_path}/jniLibs/${targetPlatform.getName()}/libopencv_features2d.a")
                }
            }

            opencv3 {
                headers.srcDir "${opencvandroid_sdk_path}/jni/include/opencv2"
                binaries.withType(StaticLibraryBinary) {
                    staticLibraryFile = file("${opencvandroid_sdk_path}/jniLibs/${targetPlatform.getName()}/libopencv_flAnn.a")
                }
            }

            opencv4 {
                headers.srcDir "${opencvandroid_sdk_path}/jni/include/opencv2"
                binaries.withType(StaticLibraryBinary) {
                    staticLibraryFile = file("${opencvandroid_sdk_path}/jniLibs/${targetPlatform.getName()}/libopencv_highgui.a")
                }
            }

            opencv5 {
                headers.srcDir "${opencvandroid_sdk_path}/jni/include/opencv2"
                binaries.withType(StaticLibraryBinary) {
                    staticLibraryFile = file("${opencvandroid_sdk_path}/jniLibs/${targetPlatform.getName()}/libopencv_imgcodecs.a")
                }
            }

            opencv6 {
                headers.srcDir "${opencvandroid_sdk_path}/jni/include/opencv2"
                binaries.withType(StaticLibraryBinary) {
                    staticLibraryFile = file("${opencvandroid_sdk_path}/jniLibs/${targetPlatform.getName()}/libopencv_imgproc.a")
                }
            }

            opencv7 {
                headers.srcDir "${opencvandroid_sdk_path}/jni/include/opencv2"
                binaries.withType(StaticLibraryBinary) {
                    staticLibraryFile = file("${opencvandroid_sdk_path}/jniLibs/${targetPlatform.getName()}/libopencv_ml.a")
                }
            }

            opencv8 {
                headers.srcDir "${opencvandroid_sdk_path}/jni/include/opencv2"
                binaries.withType(StaticLibraryBinary) {
                    staticLibraryFile = file("${opencvandroid_sdk_path}/jniLibs/${targetPlatform.getName()}/libopencv_objdetect.a")
                }
            }

            opencv9 {
                headers.srcDir "${opencvandroid_sdk_path}/jni/include/opencv2"
                binaries.withType(StaticLibraryBinary) {
                    staticLibraryFile = file("${opencvandroid_sdk_path}/jniLibs/${targetPlatform.getName()}/libopencv_photo.a")
                }
            }

            opencv10 {
                headers.srcDir "${opencvandroid_sdk_path}/jni/include/opencv2"
                binaries.withType(StaticLibraryBinary) {
                    staticLibraryFile = file("${opencvandroid_sdk_path}/jniLibs/${targetPlatform.getName()}/libopencv_shape.a")
                }
            }

            opencv11 {
                headers.srcDir "${opencvandroid_sdk_path}/jni/include/opencv2"
                binaries.withType(StaticLibraryBinary) {
                    staticLibraryFile = file("${opencvandroid_sdk_path}/jniLibs/${targetPlatform.getName()}/libopencv_stitching.a")
                }
            }

            opencv12 {
                headers.srcDir "${opencvandroid_sdk_path}/jni/include/opencv2"
                binaries.withType(StaticLibraryBinary) {
                    staticLibraryFile = file("${opencvandroid_sdk_path}/jniLibs/${targetPlatform.getName()}/libopencv_superres.a")
                }
            }

            opencv13 {
                headers.srcDir "${opencvandroid_sdk_path}/jni/include/opencv2"
                binaries.withType(StaticLibraryBinary) {
                    staticLibraryFile = file("${opencvandroid_sdk_path}/jniLibs/${targetPlatform.getName()}/libopencv_video.a")
                }
            }

            opencv14 {
                headers.srcDir "${opencvandroid_sdk_path}/jni/include/opencv2"
                binaries.withType(StaticLibraryBinary) {
                    staticLibraryFile = file("${opencvandroid_sdk_path}/jniLibs/${targetPlatform.getName()}/libopencv_videoio.a")
                }
            }

            opencv15 {
                headers.srcDir "${opencvandroid_sdk_path}/jni/include/opencv2"
                binaries.withType(StaticLibraryBinary) {
                    staticLibraryFile = file("${opencvandroid_sdk_path}/jniLibs/${targetPlatform.getName()}/libopencv_videostab.a")
                }
            }
        }
    }

    android {
        compileSdkVersion = 23
        buildToolsVersion = "23.0.2"

        defaultConfig.with {
            applicationId = "com.example"
            minSdkVersion.apiLevel = 16
            targetSdkVersion.apiLevel = 23
            versionCode = 1
            versionName = "1.0"
        }
    }

    /*
     * native build setTings
     */
    android.ndk {
        modulename = "Hello-jni"
        /*
         * Other ndk flags configurable here are
         * cppFlags += "-fno-rtti"
         * cppFlags += "-fno-exceptions"
         * ldLibs    = ["android","log"]
         * stl       = "system"
         */
        platformVersion = 16 //same as minSdkVersion.apiLevel for better compatibility

        /*def jniPath = opencvandroid_sdk_path + "jniLibs"
        cppFlags += "-I${file(jniPath)}".toString()
        file(jniPath).eachDirRecurse { dir ->
            cppFlags += "-I${file(dir)}".toString()
        }*/

        stl = "c++_static"
        ldLibs.addAll(["atomic","log","android"])
    }

    android.sources {
        main {
            jni {
                dependencies {
                    library "opencv1" linkage "static"
                    library "opencv2" linkage "static"
                    library "opencv3" linkage "static"
                    library "opencv4" linkage "static"
                    library "opencv5" linkage "static"
                    library "opencv6" linkage "static"
                    library "opencv7" linkage "static"
                    library "opencv8" linkage "static"
                    library "opencv9" linkage "static"
                    library "opencv10" linkage "static"
                    library "opencv11" linkage "static"
                    library "opencv12" linkage "static"
                    library "opencv13" linkage "static"
                    library "opencv14" linkage "static"
                    library "opencv15" linkage "static"
                }
            }
        }
    }

    android.buildTypes {
        release {
            minifyEnabled = false
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs',include: ['*.jar'])
    TESTCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:23.1.1'
    compile 'com.android.support:design:23.1.1'
    compile project(':opencvandroid')
}

我将我的gradle文件基于我在github上找到的this示例.
现在,我发现尝试这样做的一个问题是OPENCV有几个静态库文件,所以正如post所说,我必须在gradle上的不同lib上添加每个文件以便链接它们,所以这就是为什么我的gradle文件充满了重复的库定义.

现在,当我试图在我的.CPP代码中包含头文件时,Android studio找不到它们(甚至不能使用命名空间).这是我的CPP代码：

#include <jni.h>
#include "opencv2/core/core.hpp"
#include "opencv2/imgproc/imgproc.hpp"
#include "opencv2/features2d/features2d.hpp"
#include <vector>

using namespace std;
using namespace cv;

extern "C" {
JNIEXPORT void JNICALL Java_com_example_Tutorial2Activity_FindFeatures(jnienv*,jobject,jlong adDRGray,jlong addrRgba);

JNIEXPORT void JNICALL Java_com_example_Tutorial2Activity_FindFeatures(jnienv*,jlong addrRgba)
{
    Mat& mGr  = *(Mat*)adDRGray;
    Mat& mRgb = *(Mat*)addrRgba;
    vector<KeyPoint> v;

    Ptr<FeatureDetector> detector = FastFeatureDetector::create(50);
    detector->detect(mGr,v);
    for( unsigned int i = 0; i < v.size(); i++ )
    {
        const KeyPoint& kp = v[i];
        circle(mRgb,Point(kp.pt.x,kp.pt.y),10,Scalar(255,255));
    }
}
}

我错过了一些东西,以便正确地链接它们吗？

CV_LIBS = \
    $(CV_LIB_FOLDER)/libopencv_calib3d.a \
    $(CV_LIB_FOLDER)/libopencv_highgui.a \
    $(CV_LIB_FOLDER)/libopencv_video.a \
    $(CV_LIB_FOLDER)/libopencv_objdetect.a \
    $(CV_LIB_FOLDER)/libopencv_imgproc.a \
    $(CV_LIB_FOLDER)/libopencv_imgcodecs.a \
    $(CV_LIB_FOLDER)/libopencv_core.a \
    $(CV_LIB_FOLDER)/libopencv_hal.a