MACAndroidStudioNDK环境环境下FFmpeg的编译

MAC-AndroidStudio-NDK环境环境下FFmpeg的编译

环境&＃xff1a;

mac OS 10.15.4
AndroidStudio 3.5.3
ffmpeg 3.3.6
ndk android-ndk-r15c
platform android-21

配置

操作步骤&＃xff1a;
1.修改configure&＃xff0c;去掉so文件输出时的版本信息
修改内容如下&＃xff1a;

#修改前
#SLIBNAME_WITH_MAJOR&＃61;&＃39;$(SLIBNAME).$(LIBMAJOR)&＃39;
SLIBNAME_WITH_MAJOR&＃61;&＃39;$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)&＃39;
LIB_INSTALL_EXTRA_CMD&＃61;&＃39;$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"&＃39;
#修改前
#SLIB_INSTALL_NAME&＃61;&＃39;$(SLIBNAME_WITH_VERSION)&＃39;
SLIB_INSTALL_NAME&＃61;&＃39;$(SLIBNAME_WITH_MAJOR)&＃39;
#修改前
#SLIB_INSTALL_LINKS&＃61;&＃39;$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)&＃39;
SLIB_INSTALL_LINKS&＃61;&＃39;\$(SLIBNAME)&＃39;


2.创建build_android.sh文件&＃xff0c;并增加内容如下&＃xff1a;

#!/bin/bash
# 修改为自己NDK包根目录
export NDK_HOME&＃61;「你下载的NDK解压目录」如&＃xff1a;/Users/用户/android-ndk-r15c
#根据自己的需求修改编译平台版本
export PLATFORM_VERSION&＃61;android-21「根据你的需要修改」
#定义编译方法
function build
{#echo 输出命令echo "start build ffmpeg for $ARCH"#调用configure命令开始编译&＃xff0c;并传入对应的参数./configure --target-os&＃61;linux \--prefix&＃61;$PREFIX --arch&＃61;$ARCH \--disable-doc \--disable-static \--disable-yasm \--disable-asm \--disable-symver \--disable-ffmpeg \--disable-ffplay \--disable-ffprobe \--disable-ffserver \--cross-prefix&＃61;$CROSS_COMPILE \--enable-cross-compile \--enable-shared \--enable-gpl \--sysroot&＃61;$SYSROOT \--enable-small \--extra-cflags&＃61;"-Os -fpic $ADDI_CFLAGS" \--extra-ldflags&＃61;"$ADDI_LDFLAGS" \$ADDITIONAL_CONFIGURE_FLAGmake cleanmakemake installecho "build ffmpeg for $ARCH finished"
}#编译 arm-v7a
PLATFORM_VERSION&＃61;android-21「根据你的需要修改」
ARCH&＃61;x86_64「根据你的需要修改&＃xff0c;如下&＃xff1a;其它配置方案」
CPU&＃61;x86_64 #CPU架构
PREFIX&＃61;$(pwd)/android_all/$CPU #输出路径&＃xff1a;当前目录/android_all/CPU架构/
TOOLCHAIN&＃61;$NDK_HOME/toolchains/arm-linux-androideabi-4.9/prebuilt/darwin-x86_64
CROSS_COMPILE&＃61;$TOOLCHAIN/bin/arm-linux-androideabi- #交叉编译环境路径
ADDI_CFLAGS&＃61;"-march&＃61;armv7-a -mfloat-abi&＃61;softfp -mfpu&＃61;vfpv3-d16 -mthumb -mfpu&＃61;neon"
ADDI_LDFLAGS&＃61;"-march&＃61;armv7-a -Wl,--fix-cortex-a8"
SYSROOT&＃61;$NDK_HOME/platforms/$PLATFORM_VERSION/arch-$ARCH/
build

其它配置方案&＃xff1a;

#arm
PLATFORM_VERSION&＃61;android-14
ARCH&＃61;arm
CPU&＃61;armeabi#arm-v7a
PLATFORM_VERSION&＃61;android-14
ARCH&＃61;arm
CPU&＃61;armeabi-v7a#arm64
PLATFORM_VERSION&＃61;android-21
ARCH&＃61;arm64
CPU&＃61;arm64#x86
PLATFORM_VERSION&＃61;android-14
ARCH&＃61;x86
CPU&＃61;x86#x86_64
PLATFORM_VERSION&＃61;android-21
ARCH&＃61;x86_64
CPU&＃61;x86_64#mips
PLATFORM_VERSION&＃61;android-14
ARCH&＃61;mips
CPU&＃61;mips#mips64
PLATFORM_VERSION&＃61;android-21
ARCH&＃61;mips64
CPU&＃61;mips64

3.执行build_android.sh文件
这里有几个需要注意的地方
1.修改build_android.sh为可执行文件&＃xff0c;方法如下&＃xff1a;

chmod 777 build_android.sh


2.解除mac对任何来源的应用程序运行的限制

sudo spctl --master-disable


使用此命令可以检查一下你的系统设置安全与隐私的

是否可以允许任何来源

3.运行build_android.sh脚本

sudo ./build_android.sh


编译过程大概需要五六分钟左右&＃xff0c;编译完成后可以根据脚本中你指定的输出目录中查看编译好的so文件&＃xff0c;脚本默认输出目录是&＃xff1a;ffmpeg当前目录/android_all/CPU架构/ , 类似如下图所示:

备注&＃xff1a;我在使用过程中遇到的其它问题

在mac系统下编译x86_64的so时候&＃xff0c;提示

yasm/nasm not found or too old. Use --disable-yasm for a crippled build.

解决办法参考&＃xff1a;https://blog.csdn.net/l1028386804/article/details/80976376

原文内容&＃xff1a;
&＃61;&＃61;&＃61;------------------------
安装ffmpeg过程中&＃xff0c;执行./configure时&＃xff0c;报yasm/nasm not found or too old. Use --disable-yasm for a crippledbuild错误&＃xff0c;分析、解决如下&＃xff1a;

分析&＃xff1a;yasm是汇编编译器&＃xff0c;ffmpeg为了提高效率使用了汇编指令&＃xff0c;如MMX和SSE等。所以系统中未安装yasm时&＃xff0c;就会报上面错误。

解决&＃xff1a;安装yasm编译器。安装方法如下&＃xff1a;

在http://www.tortall.net/projects/yasm/releases下面找到适合自己平台的yasm版本。然后进行安装。举例如下&＃xff1a;

1&＃xff09;下载&＃xff1a;wget http://www.tortall.net/projects/yasm/releases/yasm-1.3.0.tar.gz「可以手动下载到mac本地」

2&＃xff09;解压&＃xff1a;tar zxvf yasm-1.3.0.tar.gz「可手动解压」

3&＃xff09;切换路径&＃xff1a; cd yasm-1.3.0

4&＃xff09;执行配置&＃xff1a; ./configure

5&＃xff09;编译&＃xff1a;make

6&＃xff09;安装&＃xff1a;make install
&＃61;&＃61;&＃61;------------------------

另一种build_android.sh配置方案

#!/bin/shMY_LIBS_NAME&＃61;ffmpeg-3.3.6
MY_DIR&＃61;ffmpeg-3.3.6# cd ./${MY_DIR}#编译的过程中产生的中间件的存放目录&＃xff0c;为了区分编译目录&＃xff0c;源码目录&＃xff0c;install目录
MY_BUILD_DIR&＃61;binaryNDK_PATH&＃61;/Users/xxxx/Downloads/android-ndk-r15c
BUILD_PLATFORM&＃61;darwin-x86_64
TOOLCHAIN_VERSION&＃61;4.9
ANDROID_VERSION&＃61;21ANDROID_ARMV5_CFLAGS&＃61;"-march&＃61;armv5te"
ANDROID_ARMV7_CFLAGS&＃61;"-march&＃61;armv7-a -mfloat-abi&＃61;softfp -mfpu&＃61;neon" #-mfloat-abi&＃61;hard -mfpu&＃61;vfpv3-d16 #-mfloat-abi&＃61;hard -mfpu&＃61;vfp
ANDROID_ARMV8_CFLAGS&＃61;"-march&＃61;armv8-a"
ANDROID_X86_CFLAGS&＃61;"-march&＃61;i686 -mtune&＃61;intel -mssse3 -mfpmath&＃61;sse -m32"
ANDROID_X86_64_CFLAGS&＃61;"-march&＃61;x86-64 -msse4.2 -mpopcnt -m64 -mtune&＃61;intel"# params($1:arch,$2:arch_abi,$3:host,$4:cross_prefix,$5:cflags)
build_bin() {echo "-------------------star build $2-------------------------"ARCH&＃61;$1 # arm arm64 x86 x86_64ANDROID_ARCH_ABI&＃61;$2 # armeabi armeabi-v7a x86 mipsPREFIX&＃61;$(pwd)/dist/${MY_LIBS_NAME}/${ANDROID_ARCH_ABI}/HOST&＃61;$3SYSROOT&＃61;${NDK_PATH}/platforms/android-${ANDROID_VERSION}/arch-${ARCH}CFALGS&＃61;$5TOOLCHAIN&＃61;${NDK_PATH}/toolchains/${HOST}-${TOOLCHAIN_VERSION}/prebuilt/${BUILD_PLATFORM}CROSS_PREFIX&＃61;${TOOLCHAIN}/bin/$4-# build 中间件BUILD_DIR&＃61;./${MY_BUILD_DIR}/${ANDROID_ARCH_ABI}echo "pwd&＃61;&＃61;$(pwd)"echo "ARCH&＃61;&＃61;${ARCH}"echo "PREFIX&＃61;&＃61;${PREFIX}"echo "HOST&＃61;&＃61;${HOST}"echo "SYSROOT&＃61;${SYSROOT}"echo "CFALGS&＃61;$5"echo "CFALGS&＃61;${CFALGS}"echo "TOOLCHAIN&＃61;&＃61;${TOOLCHAIN}"echo "CROSS_PREFIX&＃61;${CROSS_PREFIX}"#echo "-------------------------按任意键继续---------------------"#read -n 1#echo "-------------------------继续执行-------------------------"#mkdir -p ${BUILD_DIR} #创建当前arch_abi的编译目录,比如:binary/armeabi-v7a#cd ${BUILD_DIR} #此处 进了当前arch_abi的2级编译目录./configure \--prefix&＃61;${PREFIX} \--target-os&＃61;linux \--arch&＃61;${ARCH} \--sysroot&＃61;$SYSROOT \--enable-cross-compile \--cross-prefix&＃61;${CROSS_PREFIX} \--extra-cflags&＃61;"$CFALGS -Os -fPIC -DANDROID -Wfatal-errors -Wno-deprecated" \--extra-cxxflags&＃61;"-D__thumb__ -fexceptions -frtti" \--extra-ldflags&＃61;"-L${SYSROOT}/usr/lib" \--enable-shared \--enable-asm \--enable-neon \--disable-encoders \--enable-encoder&＃61;aac \--enable-encoder&＃61;mjpeg \--enable-encoder&＃61;png \--disable-decoders \--enable-decoder&＃61;aac \--enable-decoder&＃61;aac_latm \--enable-decoder&＃61;h264 \--enable-decoder&＃61;mpeg4 \--enable-decoder&＃61;mjpeg \--enable-decoder&＃61;png \--disable-demuxers \--enable-demuxer&＃61;image2 \--enable-demuxer&＃61;h264 \--enable-demuxer&＃61;aac \--disable-parsers \--enable-parser&＃61;aac \--enable-parser&＃61;ac3 \--enable-parser&＃61;h264 \--enable-gpl \--disable-doc \--disable-ffmpeg \--disable-ffplay \--disable-ffprobe \--disable-symver \--disable-debug \--enable-smallmake cleanmakemake install#从当前arch_abi编译目录跳出&＃xff0c;对应上面的cd ${BUILD_DIR},以便function多次执行#cd ../../echo "-------------------$2 build end-------------------------"
}#根据你的需要接注释对应的方法就可以了
# build armeabi
#build_bin arm armeabi arm-linux-androideabi arm-linux-androideabi "$ANDROID_ARMV5_CFLAGS"#build armeabi-v7a
#build_bin arm armeabi-v7a arm-linux-androideabi arm-linux-androideabi "$ANDROID_ARMV7_CFLAGS"#build arm64-v8a
#build_bin arm64 arm64-v8a aarch64-linux-android aarch64-linux-android "$ANDROID_ARMV8_CFLAGS"#build x86
#build_bin x86 x86 x86 i686-linux-android "$ANDROID_X86_CFLAGS"#build x86_64
build_bin x86_64 x86_64 x86_64 x86_64-linux-android "$ANDROID_X86_64_CFLAGS"