Opencv 引入 Android / linux

今天药忘吃喽~ 2022-12-04 15:55 106阅读 0赞

1.CMakeLists.txt 引入动态Opencv库 和 静态 NCNN库

cmake_minimum_required(VERSION 3.4.1)
    
    ## add ncnn prebuilt 0413
    set(ncnn_path D:/scripts/ocr_android/ncnn_0413)
    include_directories(${ncnn_path}/include/ncnn)
    link_directories(${ncnn_path}/armeabi-v7a)
    set(ncnn_lib ${ncnn_path}/armeabi-v7a/libncnn.a)
    add_library (ncnn STATIC IMPORTED)
    set_target_properties(ncnn PROPERTIES IMPORTED_LOCATION ${ncnn_lib})
    
    # add opencv
    set(OpenCV_DIR D:/scripts/ocr_android/opencv_release_armeabi/build)
    find_package(OpenCV REQUIRED)
    
    # openmp
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fopenmp")
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fopenmp")
    set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -fopenmp")
    
    add_library( # Sets the name of the library.
            native-lib
            SHARED
            native-lib.cpp model.cpp)
    
    find_library(
            log-lib
            log
            android)
    
    target_link_libraries( # Specifies the target library.
            native-lib
            ncnn
            ${OpenCV_LIBS}
            android
            jnigraphics
            ${log-lib})

Opencv4.1 & NDK21b

2.Android.mk 动态导入 Opencv 和 Ncnn

# Android.mk必须以LOCAL_PATH开头，注释#除外
    
    # 设置工作目录，而my-dir则会返回Android.mk文件所在的目录
    
    
    LOCAL_PATH := $(call my-dir)
    
    OpenCV_BASE = ../libraries/OpenCV-android-sdk
    NCNN_BASE = ../libraries/ncnn-android-lib
    
    # 借助CLEAR_VARS变量清除除LOCAL_PATH外的所有LOCAL_<name>变量
    
    include $(CLEAR_VARS)
    LOCAL_MODULE := ncnn
    LOCAL_SRC_FILES := $(NCNN_BASE)/arm64-v8a/libncnn.a
    include $(PREBUILT_STATIC_LIBRARY)
    
    
    include $(CLEAR_VARS)
    OPENCV_INSTALL_MODULES:=on
    OPENCV_LIB_TYPE=SHARED
    include $(OpenCV_BASE)/sdk/native/jni/OpenCV.mk
    
    
    
    # 设置模块的名称，即编译出来.so文件名
    # 注，要和上述步骤中build.gradle中NDK节点设置的名字相同
    
    
    LOCAL_MODULE := libFaceInterface
    
    
    LOCAL_C_INCLUDES += $(OpenCV_BASE)/sdk/native/jni/include
    LOCAL_C_INCLUDES += $(NCNN_BASE)/include/ncnn
    
    
    LOCAL_STATIC_LIBRARIES += ncnn
    
    
    LOCAL_CFLAGS := -O2 -fvisibility=hidden -fomit-frame-pointer -fstrict-aliasing -ffunction-sections -fdata-sections -ffast-math
    LOCAL_CPPFLAGS := -O2 -fvisibility=hidden -fvisibility-inlines-hidden -fomit-frame-pointer -fstrict-aliasing -ffunction-sections -fdata-sections -ffast-math
    LOCAL_LDFLAGS += -Wl,--gc-sections
    
    LOCAL_CFLAGS += -fopenmp
    LOCAL_CPPFLAGS += -fopenmp
    LOCAL_LDFLAGS += -fopenmp
    
    
    
    LOCAL_SRC_FILES := com_example_demo_SUANFA.cpp abstractFace.cpp Base64.cpp extractFaceFeatures.cpp face_detect.cpp factoryProcess.cpp image_quality_util.cpp libFaceAPI.cpp resAmFace.cpp
    
    
    LOCAL_LDLIBS :=  -landroid -llog -ldl -lz 
    
    # 必须在文件结尾定义编译类型，指定生成的静态库或者共享库在运行时依赖的共享库模块列表。
    
    # BUILD_SHARED_LIBRARY 共享库，供java或者其他共享库调用
    
    # BUILD_STATIC_LIBRARY 静态库，供共享库调用，不能直接被java调用
    
    include $(BUILD_SHARED_LIBRARY)

Android静态导入 Opencv & NCNN

# Android.mk必须以LOCAL_PATH开头，注释#除外
    
    # 设置工作目录，而my-dir则会返回Android.mk文件所在的目录
    
    
    LOCAL_PATH := $(call my-dir)
    
    OpenCV_BASE = ../libraries/OpenCV-android-sdk
    NCNN_BASE = ../libraries/ncnn-android-lib
    
    # 借助CLEAR_VARS变量清除除LOCAL_PATH外的所有LOCAL_<name>变量
    
    
    include $(CLEAR_VARS)
    LOCAL_MODULE := ncnn
    LOCAL_SRC_FILES := $(NCNN_BASE)/arm64-v8a/libncnn.a
    include $(PREBUILT_STATIC_LIBRARY)
    
    
    include $(CLEAR_VARS)
    OPENCV_INSTALL_MODULES:=on
    OPENCV_LIB_TYPE := STATIC
    include $(OpenCV_BASE)/sdk/native/jni/OpenCV.mk
    
    
    # 设置模块的名称，即编译出来.so文件名
    # 注，要和上述步骤中build.gradle中NDK节点设置的名字相同
    
    LOCAL_MODULE := libFaceInterface
    
    
    LOCAL_C_INCLUDES += $(OpenCV_BASE)/sdk/native/jni/include
    LOCAL_C_INCLUDES += $(NCNN_BASE)/include/ncnn
    
    
    LOCAL_STATIC_LIBRARIES += ncnn
    
    
    LOCAL_CFLAGS := -O2 -fvisibility=hidden -fomit-frame-pointer -fstrict-aliasing -ffunction-sections -fdata-sections -ffast-math
    LOCAL_CPPFLAGS := -O2 -fvisibility=hidden -fvisibility-inlines-hidden -fomit-frame-pointer -fstrict-aliasing -ffunction-sections -fdata-sections -ffast-math
    LOCAL_LDFLAGS += -Wl,--gc-sections
    
    LOCAL_CFLAGS += -fopenmp
    LOCAL_CPPFLAGS += -fopenmp
    LOCAL_LDFLAGS += -fopenmp
    
    
    
    LOCAL_SRC_FILES := com_example_demo_SUANFA.cpp abstractFace.cpp Base64.cpp extractFaceFeatures.cpp face_detect.cpp factoryProcess.cpp image_quality_util.cpp libFaceAPI.cpp resAmFace.cpp
    
    
    
    LOCAL_LDLIBS := -landroid -llog -ldl -lz 
    
    
    # 必须在文件结尾定义编译类型，指定生成的静态库或者共享库在运行时依赖的共享库模块列表。
    
    # BUILD_SHARED_LIBRARY 共享库，供java或者其他共享库调用
    
    # BUILD_STATIC_LIBRARY 静态库，供共享库调用，不能直接被java调用
    
    include $(BUILD_SHARED_LIBRARY)