经过 Andorid FFmpeg 学习01 源码生成动态库 第一步生成了动态库，现在导入AS并显示基本的版本号。
当前电脑环境：Win7 64位
AS版本：3.5.3
1、新建工程FFMpeg0
选择Native C++，因为要用jni。一路Next创建工程
2、在appsrcmain中新建jniLibs(AS默认的so库存放路径)，并将前面生成的so库和头文件全部复制到该目录下，我这里只导入了armeabi-v7a
jniLibs目录文件
armeabi-v7a 文件夹下包含的文件
armeabi-v7a 文件夹文件
include 文件夹下包含的文件
include 文件夹文件
3、配置cmake
设置so库路径
set(ffmpeg_path ${CMAKE_SOURCE_DIR}/../jniLibs)设置头文件目录
include_directories (${ffmpeg_path}/include)添加so库
#将第三方库作为动态库引用add_library(avcodec SHARED IMPORTED)#指定第三方库的绝对路径set_target_properties(avcodec PROPERTIES IMPORTED_LOCATION ${ffmpeg_path}/${ANDROID_ABI}/libavcodec.so)链接到生成的native-lib.so库中
target_link_libraries( # Specifies the target library. native-lib avcodec # Links the target library to the log library # included in the NDK. ${log-lib})CMakeLists完整代码
# For more information about using CMake with Android Studio, read the# documentation: https://d.android.com/studio/projects/add-native-code.html# Sets the minimum version of CMake required to build the native library.cmake_minimum_required(VERSION 3.4.1)#设置so库路径set(ffmpeg_path ${CMAKE_SOURCE_DIR}/../jniLibs)#设置头文件目录include_directories (${ffmpeg_path}/include)# Creates and names a library, sets it as either STATIC# or SHARED, and provides the relative paths to its source code.# You can define multiple libraries, and CMake builds them for you.# Gradle automatically packages shared libraries with your APK.#将第三方库作为动态库引用add_library(avcodec SHARED IMPORTED)#指定第三方库的绝对路径set_target_properties(avcodec PROPERTIES IMPORTED_LOCATION ${ffmpeg_path}/${ANDROID_ABI}/libavcodec.so)#将第三方库作为动态库引用add_library(avdevice SHARED IMPORTED)#指定第三方库的绝对路径set_target_properties(avdevice PROPERTIES IMPORTED_LOCATION ${ffmpeg_path}/${ANDROID_ABI}/libavdevice.so)#将第三方库作为动态库引用add_library(avfilter SHARED IMPORTED)#指定第三方库的绝对路径set_target_properties(avfilter PROPERTIES IMPORTED_LOCATION ${ffmpeg_path}/${ANDROID_ABI}/libavfilter.so)#将第三方库作为动态库引用add_library(avformat SHARED IMPORTED)#指定第三方库的绝对路径set_target_properties(avformat PROPERTIES IMPORTED_LOCATION ${ffmpeg_path}/${ANDROID_ABI}/libavformat.so)#将第三方库作为动态库引用add_library(avutil SHARED IMPORTED)#指定第三方库的绝对路径set_target_properties(avutil PROPERTIES IMPORTED_LOCATION ${ffmpeg_path}/${ANDROID_ABI}/libavutil.so)#将第三方库作为动态库引用add_library(swresample SHARED IMPORTED)#指定第三方库的绝对路径set_target_properties(swresample PROPERTIES IMPORTED_LOCATION ${ffmpeg_path}/${ANDROID_ABI}/libswresample.so)#将第三方库作为动态库引用add_library(swscale SHARED IMPORTED)#指定第三方库的绝对路径set_target_properties(swscale PROPERTIES IMPORTED_LOCATION ${ffmpeg_path}/${ANDROID_ABI}/libswscale.so)add_library( # Sets the name of the library. native-lib # Sets the library as a shared library. SHARED # Provides a relative path to your source file(s). native-lib.cpp)# Searches for a specified prebuilt library and stores the path as a# variable. Because CMake includes system libraries in the search path by# default, you only need to specify the name of the public NDK library# you want to add. CMake verifies that the library exists before# completing its build.find_library( # Sets the name of the path variable. log-lib # Specifies the name of the NDK library that # you want CMake to locate. log)# Specifies libraries CMake should link to your target library. You# can link multiple libraries, such as libraries you define in this# build script, prebuilt third-party libraries, or system libraries.target_link_libraries( # Specifies the target library. native-lib avcodec avdevice avfilter avformat avutil swresample swscale # Links the target library to the log library # included in the NDK. ${log-lib})4、native-lib.cpp中调用显示FFmpeg版本号
#include #include extern "C" {//util工具库#include "../jniLibs/include/libavutil/avutil.h"//编解码#include "../jniLibs/include/libavcodec/avcodec.h"//封装格式生成解析#include "../jniLibs/include/libavformat/avformat.h"//视频场景比例缩放 , 色彩映射转换#include "../jniLibs/include/libswscale/swscale.h"}extern "C" JNIEXPORT jstring JNICALLJava_com_xohn_ffmpeg0_MainActivity_stringFromJNI( JNIEnv *env, jobject /* this */) { std::string hello = "Hello from C++"; //return env->NewStringUTF(hello.c_str()); return env->NewStringUTF(av_version_info());}显示效果图
项目git地址：
https://gitee.com/xohn/FFmpeg.git
中的FFMpeg0