ubuntu 平台 FFmpeg Android(安卓).so文件编译

ubuntu编译FFmpeg其实是比较简单的

工具：

VM虚拟机  ubuntu.iso镜像  https://yunpan.cn/cRPbJJdWNuDJR  访问密码 a216Android NDK    https://yunpan.cn/cRPbZvyptWGLN  访问密码 90e8FFmpeg 2.2     https://yunpan.cn/cRPbjNyDBVcHT  访问密码 eb77FFmpeg 3.0.2 最新   https://yunpan.cn/cRPbQqA8fB4cZ  访问密码 c6c4

步骤：

安装VM，ubuntu镜像就掠过了。。。请参考 http://jingyan.baidu.com/article/c14654134960d80bfcfc4cf3.html想复制粘贴的话安装tools 请参考 http://jingyan.baidu.com/article/3065b3b6e8dedabecff8a435.html解压所有用到的文件

准备工作做好了

先编译FFmpeg 2.2把

在ffmpeg2.2下创建build_android.sh文件

内容如下

#!/bin/bashNDK=/home/zhang/Desktop/wode/r10+3.02/android-ndk-r10bSYSROOT=$NDK/platforms/android-9/arch-arm/TOOLCHAIN=$NDK/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64function build_one  {./configure \    --prefix=$PREFIX \    --enable-shared \    --disable-static \    --disable-doc \    --disable-ffserver \    --enable-cross-compile \    --cross-prefix=$TOOLCHAIN/bin/arm-linux-androideabi- \    --target-os=linux \    --arch=arm \    --sysroot=$SYSROOT \    --extra-cflags="-Os -fpic $ADDI_CFLAGS" \    --extra-ldflags="$ADDI_LDFLAGS" \    $ADDITIONAL_CONFIGURE_FLAG}CPU=armPREFIX=$(pwd)/android/$CPUADDI_CFLAGS="-marm"build_one

NDK SYSROOT TOOLCHAIN这三个一定是你自己系统下的路径

更改configure文件

SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'LIB_INSTALL_EXTRA_CMD='$$(RANLIB)"$(LIBDIR)/$(LIBNAME)"'SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR)$(SLIBNAME)'替换为：SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'LIB_INSTALL_EXTRA_CMD='$$(RANLIB)"$(LIBDIR)/$(LIBNAME)"'SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'SLIB_INSTALL_LINKS='$(SLIBNAME)'

右击空白处打开终端

./build_android.sh 运行

成功

make命令

开始编译了，（大概编译10来分钟）编译完后执行 make install 就生成了一个android目录

android目录

创建一个Android 工程

我这里是Android Studio“

com_example_administrator_myapplication_CameraAc.h里的内容需要手动生成

javah -d jni -classpath C:\Users\Administrator\AppData\Local\Android\Sdk\platforms\android-21\android.jar;.\app\build\intermediates\classes\debug com.exam

javah -d (jni新建文件名) -classpath (sdk路径);(class 路径) (class文件名，包括包名)

CameraAc.java里的内容

public class CameraAc extends Activity {    private Button bt_up;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        bt_up = (Button)findViewById(R.id.bt_up);        int codecID = 28;        int res = avcodeDecoder(codecID);        if (res == 1) {            bt_up.setText("Success!");        } else {            bt_up.setText("Failed!");        }    }    static {        System.loadLibrary("avutil-52");        System.loadLibrary("avcodec-55");        System.loadLibrary("swresample-0");        System.loadLibrary("avformat-55");        System.loadLibrary("swscale-2");        System.loadLibrary("avfilter-4");        System.loadLibrary("avdevice-55");        System.loadLibrary("ffmpeg_codec");    }    public native int avcodeDecoder(int codecID);}

Android.mk里的内容

LOCAL_PATH := $(call my-dir)include $(CLEAR_VARS)LOCAL_MODULE := avcodec-55-prebuiltLOCAL_SRC_FILES := prebuilt/libavcodec-55.soinclude $(PREBUILT_SHARED_LIBRARY)include $(CLEAR_VARS)LOCAL_MODULE := avdevice-55-prebuiltLOCAL_SRC_FILES := prebuilt/libavdevice-55.soinclude $(PREBUILT_SHARED_LIBRARY)include $(CLEAR_VARS)LOCAL_MODULE := avfilter-4-prebuiltLOCAL_SRC_FILES := prebuilt/libavfilter-4.soinclude $(PREBUILT_SHARED_LIBRARY)include $(CLEAR_VARS)LOCAL_MODULE := avformat-55-prebuiltLOCAL_SRC_FILES := prebuilt/libavformat-55.soinclude $(PREBUILT_SHARED_LIBRARY)include $(CLEAR_VARS)LOCAL_MODULE :=  avutil-52-prebuiltLOCAL_SRC_FILES := prebuilt/libavutil-52.soinclude $(PREBUILT_SHARED_LIBRARY)include $(CLEAR_VARS)LOCAL_MODULE :=  avswresample-0-prebuiltLOCAL_SRC_FILES := prebuilt/libswresample-0.soinclude $(PREBUILT_SHARED_LIBRARY)include $(CLEAR_VARS)LOCAL_MODULE :=  swscale-2-prebuiltLOCAL_SRC_FILES := prebuilt/libswscale-2.soinclude $(PREBUILT_SHARED_LIBRARY)include $(CLEAR_VARS)LOCAL_MODULE := ffmpeg_codecLOCAL_SRC_FILES := com_example_administrator_myapplication_CameraAc.cLOCAL_LDLIBS := -llog -ljnigraphics -lz -landroidLOCAL_SHARED_LIBRARIES := avcodec-55-prebuilt avdevice-55-prebuilt avfilter-4-prebuilt avformat-55-prebuilt avutil-52-prebuiltinclude $(BUILD_SHARED_LIBRARY)

Application.mk里的内容

#APP_ABI := armeabi#APP_ABI := armeabi-v7aAPP_ABI := allAPP_PLATFORM := android-10

com_example_administrator_myapplication_CameraAc.c里的内容

#include <stddef.h>#include "libavcodec/avcodec.h"#include "libavformat/avformat.h"#include "com_example_administrator_myapplication_CameraAc.h"JNIEXPORT jint JNICALL Java_com_example_administrator_myapplication_CameraAc_avcodeDecoder  (JNIEnv *env, jobject obj, jint codecID){                AVCodec *codec = NULL;                av_register_all();                codec= avcodec_find_decoder(codecID);                if(codec != NULL)                {                                return 1;                }                else                {                                return-1;                }  }

妹的一直报错，记得把FUCKjni改成jni

果断用别的方法

新建一个jni文件夹，把东西都放进去

编译

生成lib文件了

编译好之后jni外面的文件夹下就会有lib目录

把jni文件夹弄出去，然后运行

3.02和2.2编译步骤都一样，编译出来的.so文件不一样而已

代码这里下载

** http://download.csdn.net/detail/t1_one/9550614

特此感谢
http://blog.csdn.net/gobitan/article/details/22750719文章带来的灵感

代码这里下载

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