ffmpeg集成到androidStudio

版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/daividtu/article/details/84134131

1.把我们需要的so库及include copy进来 整个include包含文件夹及里面的内容

修改项目的build.gradle文件

defaultConfig {
        applicationId "com.ican.ffmpegdemo1"
        minSdkVersion 15
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
        //add start
        sourceSets {
            main {
                jniLibs.srcDirs = ['libs']
            }
        }
        externalNativeBuild {
            cmake {
                cppFlags "-frtti -fexceptions"
                abiFilters 'armeabi'
            }
        }
        //add end
    }

修改CMakeLists.txt文件

cmake_minimum_required(VERSION 3.4.1)
add_library( native-lib
             SHARED
             src/main/cpp/native-lib.cpp
              )

find_library( log-lib
              log )
include_directories(libs/include)
set(DIR ../../../../libs)
add_library(avcodec-56
            SHARED
            IMPORTED)
set_target_properties(avcodec-56
                      PROPERTIES IMPORTED_LOCATION
                      ${DIR}/armeabi/libavcodec-56.so)
add_library(avdevice-56
            SHARED
            IMPORTED)
set_target_properties(avdevice-56
                      PROPERTIES IMPORTED_LOCATION
                      ${DIR}/armeabi/libavdevice-56.so)
add_library(avformat-56
            SHARED
            IMPORTED)
set_target_properties(avformat-56
                      PROPERTIES IMPORTED_LOCATION
                      ${DIR}/armeabi/libavformat-56.so)
add_library(avutil-54
            SHARED
            IMPORTED)
set_target_properties(avutil-54
                      PROPERTIES IMPORTED_LOCATION
                      ${DIR}/armeabi/libavutil-54.so)
add_library(postproc-53
            SHARED
            IMPORTED)
set_target_properties(postproc-53
                      PROPERTIES IMPORTED_LOCATION
                      ${DIR}/armeabi/libpostproc-53.so)
 add_library(swresample-1
             SHARED
             IMPORTED)
 set_target_properties(swresample-1
                       PROPERTIES IMPORTED_LOCATION
                       ${DIR}/armeabi/libswresample-1.so)
  add_library(swscale-3
              SHARED
              IMPORTED)
  set_target_properties(swscale-3
                        PROPERTIES IMPORTED_LOCATION
                        ${DIR}/armeabi/libswscale-3.so)
  add_library(avfilter-5
              SHARED
              IMPORTED)
  set_target_properties(avfilter-5
                        PROPERTIES IMPORTED_LOCATION
                        ${DIR}/armeabi/libavfilter-5.so)
target_link_libraries( native-lib
                       avcodec-56
                       avdevice-56
                       avformat-56
                       avutil-54
                       postproc-53
                       swresample-1
                       swscale-3
                       avfilter-5
                       ${log-lib} )

加载库

public class MainActivity extends AppCompatActivity {

    // Used to load the 'native-lib' library on application startup.
    static{
        System.loadLibrary("avcodec-56");
        System.loadLibrary("avdevice-56");
        System.loadLibrary("avfilter-5");
        System.loadLibrary("avformat-56");
        System.loadLibrary("avutil-54");
        System.loadLibrary("postproc-53");
        System.loadLibrary("swresample-1");
        System.loadLibrary("swscale-3");
        System.loadLibrary("native-lib");
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // Example of a call to a native method
        TextView tv = (TextView) findViewById(R.id.sample_text);
        tv.setText(stringFromJNI());
    }

    /**
     * A native method that is implemented by the 'native-lib' native library,
     * which is packaged with this application.
     */
    public native String stringFromJNI();
}

测试ffmpeg

#include <jni.h>
#include <string>
extern "C"{
//编码
#include "libavcodec/avcodec.h"
//封装格式处理
#include "libavformat/avformat.h"
//像素处理
#include "libswscale/swscale.h"
}
extern "C" JNIEXPORT jstring

JNICALL
Java_com_ican_ffmpegdemo1_MainActivity_stringFromJNI(
        JNIEnv *env,
        jobject /* this */) {
    std::string hello = "Hello from C++";
    av_register_all();
    return env->NewStringUTF(hello.c_str());
}