ffmpeg android studio 第一个可运行的例子

                                                                           

1:项目结构

2:目录主要内容

3:主要内容配置和代码

#include <stdio.h>

#include "libavcodec/avcodec.h"
#include "libavformat/avformat.h"
#include "libavfilter/avfilter.h"

//Log
#ifdef ANDROID
#include <jni.h>
#include <android/log.h>
#define LOGE(format, ...)  __android_log_print(ANDROID_LOG_ERROR, "(>_<)", format, ##__VA_ARGS__)
#else
#define LOGE(format, ...)  printf("(>_<) " format "\n", ##__VA_ARGS__)
#endif


//FIX
struct URLProtocol;


JNIEXPORT jstring Java_com_example_zhudechao_jni_1hello_MainActivity_stringFromJNI(JNIEnv *env, jobject obj)
{
    char info[40000] = { 0 };

    av_register_all();

    AVCodec *c_temp = av_codec_next(NULL);

    while(c_temp!=NULL){
        if (c_temp->decode!=NULL){
        sprintf(info, "%s[Dec]", info);
        }
        else{
        sprintf(info, "%s[Enc]", info);
        }
        switch (c_temp->type){
        case AVMEDIA_TYPE_VIDEO:
        sprintf(info, "%s[Video]", info);
        break;
        case AVMEDIA_TYPE_AUDIO:
        sprintf(info, "%s[Audio]", info);
        break;
        default:
        sprintf(info, "%s[Other]", info);
        break;
        }
        sprintf(info, "%s[%10s]\n", info, c_temp->name);


        c_temp=c_temp->next;
    }
//LOGE("%s", info);

    return (*env)->NewStringUTF(env, info);
}

package com.example.zhudechao.jni_hello;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.TextView;
import android.text.method.ScrollingMovementMethod;
import android.view.View;
import android.widget.Button;

public class MainActivity extends AppCompatActivity {

    // Used to load the 'native-lib' library on application startup.
    static{
        System.loadLibrary("native-lib");
    }

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

        final TextView infoText = (TextView) findViewById(R.id.text_libinfo);
        infoText.setMovementMethod(ScrollingMovementMethod.getInstance());
        Button button = (Button) this.findViewById(R.id.button_avcodec);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                infoText.setText(stringFromJNI());
            }
        });
    }

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

apply plugin: 'com.android.application'

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.example.zhudechao.jni_hello"
        minSdkVersion 22
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
        externalNativeBuild {
            cmake {
                cppFlags "-frtti -fexceptions"
            }
        }
        ndk {
            abiFilters 'armeabi-v7a', 'arm64-v8a', 'x86', 'x86_64'
        }
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    externalNativeBuild {
        cmake {
            path "CMakeLists.txt"
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:28.0.0'
    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
}

cmake_minimum_required(VERSION 3.4.1)

find_library(log-lib log)
find_library(android-lib android)

add_library(native-lib
        SHARED
        src/main/cpp/native-lib.c)

set(JNI_LIBS_DIR ${CMAKE_SOURCE_DIR}/src/main/jniLibs)

add_library(avutil
        SHARED
        IMPORTED )
set_target_properties(avutil
        PROPERTIES IMPORTED_LOCATION
        ${JNI_LIBS_DIR}/${ANDROID_ABI}/libavutil.so )

add_library(swresample
        SHARED
        IMPORTED )
set_target_properties(swresample
        PROPERTIES IMPORTED_LOCATION
        ${JNI_LIBS_DIR}/${ANDROID_ABI}/libswresample.so )

add_library(swscale
        SHARED
        IMPORTED )
set_target_properties(swscale
        PROPERTIES IMPORTED_LOCATION
        ${JNI_LIBS_DIR}/${ANDROID_ABI}/libswscale.so )

add_library(avcodec
        SHARED
        IMPORTED )
set_target_properties(avcodec
        PROPERTIES IMPORTED_LOCATION
        ${JNI_LIBS_DIR}/${ANDROID_ABI}/libavcodec.so )

add_library(avformat
        SHARED
        IMPORTED )
set_target_properties(avformat
        PROPERTIES IMPORTED_LOCATION
        ${JNI_LIBS_DIR}/${ANDROID_ABI}/libavformat.so )

add_library(avfilter
        SHARED
        IMPORTED )
set_target_properties(avfilter
        PROPERTIES IMPORTED_LOCATION
        ${JNI_LIBS_DIR}/${ANDROID_ABI}/libavfilter.so )

add_library(avdevice
        SHARED
        IMPORTED )
set_target_properties(avdevice
        PROPERTIES IMPORTED_LOCATION
        ${JNI_LIBS_DIR}/${ANDROID_ABI}/libavdevice.so )

include_directories(${JNI_LIBS_DIR}/includes)

target_link_libraries(native-lib
        avutil swresample swscale avcodec avformat avfilter avdevice
        ${log-lib} ${android-lib} )

demo : 链接:https://pan.baidu.com/s/1IKyAacLCom7PPIzXkFQ29g  密码:c8p8