IOS 编译ffmpeg For SDK6.1，模拟器、armv7、armv7s均可使用

最近在研究IOS视频播放器，需要使用到ffmpeg4ios，所以整理编译过程。

需要使用到Git，Linux Shell脚本执行install-ffmpeg.sh即可。

下述Linux Shell脚本下载地址:http://ishare.iask.sina.com.cn/f/37135883.html

install-ffmpeg.sh

SRCDIR=`pwd`VERSION="1.2.1"echo "install gas-* perl script"./install-gas.shecho "download ffmpeg"set -eif [ ! -e ffmpeg-${VERSION}.tar.bz2 ]; then    echo "Downloading ffmpeg-${VERSION}.tar.bz2"    curl -O  http://ffmpeg.org/releases/ffmpeg-${VERSION}.tar.bz2else    echo "Using ffmpeg-${VERSION}.tar.bz2"fitar jxvf ffmpeg-${VERSION}.tar.bz2echo "copy install shell script to ffmpeg"cp ./compile-*.sh "ffmpeg-${VERSION}"cd "ffmpeg-${VERSION}"if [ -d x264 ]    then        (cd $SRCDIR/ffmpeg-${VERSION}/x264; git pull)    else        git clone git://git.videolan.org/x264.git x264fiecho "compile armv7s ..."./compile-armv7s.shecho "compile armv7 ..."./compile-armv7.shecho "compile i386 for Simulator ..."./compile-i386.shecho "packaging universal version ..."./compile-universal.sh

 

install-gas.sh

echo "install gas-preproccesor.pr"git clone git://github.com/mansr/gas-preprocessor.gitecho "copy gas-preprocessor.pl to /usr/sbin"sudo cp -f gas-preprocessor/gas-preprocessor.pl /usr/sbin/echo "set execute right"chmod +x /usr/sbin/gas-preprocessor.plecho "install finished."

 

compile-armv7s.sh

SRCDIR=`pwd`SDKVERSION="6.1"cd $SRCDIR/x264make cleanCC=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc \    ./configure \        --host=arm-apple-darwin \        --sysroot=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS${SDKVERSION}.sdk \        --prefix=build/armv7s \        --extra-cflags='-arch armv7s' \        --extra-ldflags="-L/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS${SDKVERSION}.sdk/usr/lib/system -arch armv7s" \        --enable-pic --disable-shared --enable-staticmake && make installcd $SRCDIRmake clean./configure \    --prefix=armv7s \    --cc=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc \    --as='gas-preprocessor.pl /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc' \    --sysroot=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS${SDKVERSION}.sdk \    --extra-ldflags=-L/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS${SDKVERSION}.sdk/usr/lib/system \    --target-os=darwin \    --arch=arm \    --cpu=cortex-a9 \    --extra-cflags='-I./x264/build/armv7s/include -arch armv7s' \    --extra-ldflags='-L./x264/build/armv7s/lib -arch armv7s' \    --enable-pic \    --enable-cross-compile \    --enable-gpl \    --enable-libx264 \    --disable-ffmpeg  \    --disable-ffplay \    --disable-ffserver \    --disable-doc        # build for armv7smake cleanmake# copy out the armv7s libsmkdir -p ./build/armv7scp -f ./libavcodec/libavcodec.a ./build/armv7s/libavcodec.acp -f ./libavdevice/libavdevice.a ./build/armv7s/libavdevice.acp -f ./libavfilter/libavfilter.a ./build/armv7s/libavfilter.acp -f ./libavformat/libavformat.a ./build/armv7s/libavformat.acp -f ./libavutil/libavutil.a ./build/armv7s/libavutil.acp -f ./libswscale/libswscale.a ./build/armv7s/libswscale.a

 

compile-armv7.sh

SRCDIR=`pwd`SDKVERSION="6.1"cd $SRCDIR/x264make cleanCC=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc \    ./configure \        --host=arm-apple-darwin \        --sysroot=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS${SDKVERSION}.sdk \        --prefix=build/armv7 \        --extra-cflags='-arch armv7' \        --extra-ldflags="-L/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS${SDKVERSION}.sdk/usr/lib/system -arch armv7" \        --enable-pic --disable-shared --enable-staticmake && make installcd $SRCDIRmake clean./configure \    --cc=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc \    --as='gas-preprocessor.pl /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc' \    --sysroot=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS${SDKVERSION}.sdk \    --extra-ldflags=-L/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS${SDKVERSION}.sdk/usr/lib/system \    --target-os=darwin \    --arch=arm \    --cpu=cortex-a8 \    --extra-cflags='-I./x264/build/armv7/include -arch armv7' \    --extra-ldflags='-L./x264/build/armv7/lib -arch armv7' \    --enable-pic \    --enable-cross-compile \    --enable-gpl \    --enable-libx264 \    --disable-ffmpeg  \    --disable-ffplay \    --disable-ffserver \    --disable-doc        # build for armv7make cleanmake# copy out the armv7 libsmkdir -p ./build/armv7cp -f ./libavcodec/libavcodec.a ./build/armv7/libavcodec.acp -f ./libavdevice/libavdevice.a ./build/armv7/libavdevice.acp -f ./libavfilter/libavfilter.a ./build/armv7/libavfilter.acp -f ./libavformat/libavformat.a ./build/armv7/libavformat.acp -f ./libavutil/libavutil.a ./build/armv7/libavutil.acp -f ./libswscale/libswscale.a ./build/armv7/libswscale.a

 

compile-i386.sh

SRCDIR=`pwd`SDKVERSION="6.1"cd $SRCDIR/x264echo "compile x264 i386 ..."make cleanCC=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/gcc \    ./configure \        --host=i386-apple-darwin \        --sysroot=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator${SDKVERSION}.sdk \        --prefix=build/i386 \        --extra-cflags='-arch i386' \        --extra-ldflags="-L/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator${SDKVERSION}.sdk/usr/lib/system -arch i386" \        --enable-pic --disable-shared --enable-static --disable-asmmake && make installcd $SRCDIRecho "compile ffmpeg i386 ..."make clean./configure \    --cc=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/gcc \    --as='gas-preprocessor.pl /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/gcc' \    --sysroot=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator${SDKVERSION}.sdk \    --extra-ldflags=-L/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator${SDKVERSION}.sdk/usr/lib/system \    --target-os=darwin \    --arch=i386 \    --cpu=i386 \    --extra-cflags='-I./x264/build/i386/include -arch i386' \    --extra-ldflags='-L./x264/build/i386/lib -arch i386' \    --enable-pic \    --enable-cross-compile \    --enable-gpl \    --enable-libx264 \    --disable-ffmpeg  \    --disable-ffplay \    --disable-ffserver \    --disable-doc \    --disable-asm# build for i386make cleanmake# copy out the i386 libsmkdir -p ./build/i386cp -f ./libavcodec/libavcodec.a ./build/i386/libavcodec.acp -f ./libavdevice/libavdevice.a ./build/i386/libavdevice.acp -f ./libavfilter/libavfilter.a ./build/i386/libavfilter.acp -f ./libavformat/libavformat.a ./build/i386/libavformat.acp -f ./libavutil/libavutil.a ./build/i386/libavutil.acp -f ./libswscale/libswscale.a ./build/i386/libswscale.a

 

compile-universal.sh

# make fat (universal) libsxcrun -sdk iphoneos lipo -output ./build/libavcodec.a  \    -create \        -arch armv7s ./build/armv7s/libavcodec.a \        -arch armv7 ./build/armv7/libavcodec.a \        -arch i386 ./build/i386/libavcodec.axcrun -sdk iphoneos lipo -output ./build/libavdevice.a  \    -create \        -arch armv7s ./build/armv7s/libavdevice.a \        -arch armv7 ./build/armv7/libavdevice.a \        -arch i386 ./build/i386/libavdevice.axcrun -sdk iphoneos lipo -output ./build/libavfilter.a  \    -create \        -arch armv7s ./build/armv7s/libavfilter.a \        -arch armv7 ./build/armv7/libavfilter.a \        -arch i386 ./build/i386/libavfilter.axcrun -sdk iphoneos lipo -output ./build/libavformat.a  \    -create \        -arch armv7s ./build/armv7s/libavformat.a \        -arch armv7 ./build/armv7/libavformat.a \        -arch i386 ./build/i386/libavformat.axcrun -sdk iphoneos lipo -output ./build/libavutil.a  \    -create \        -arch armv7s ./build/armv7s/libavutil.a \        -arch armv7 ./build/armv7/libavutil.a \        -arch i386 ./build/i386/libavutil.axcrun -sdk iphoneos lipo -output ./build/libswscale.a  \    -create \        -arch armv7s ./build/armv7s/libswscale.a \        -arch armv7 ./build/armv7/libswscale.a \        -arch i386 ./build/i386/libswscale.axcrun -sdk iphoneos lipo -output ./x264/build/libx264.a  \    -create \        -arch armv7s ./x264/build/armv7s/lib/libx264.a \        -arch armv7 ./x264/build/armv7/lib/libx264.a \        -arch i386 ./x264/build/i386/lib/libx264.a

 

编译出来的文件为:

libavcodec.a

用于各种类型声音/图像编解码；

libavdevice.a

libavfilter.a

libavformat.a

用于各种音视频封装格式的生成和解析，包括获取解码所需信息以生成解码上下文结构

和读取音视频帧等功能；

libavutil.a

包含一些公共的工具函数；

libswscale.a

用于视频场景比例缩放、色彩映射转换；

libx264.a

 

开源示例iFrameExtractor

git clone git://github.com/lajos/iFrameExtractor.git

这是一个iOS下利用ffmpeg解码播放的例子。不过这个例子是利用贴图的方式来显示，效果不是很好，而且没有加入声音解码。

 

要想项目顺利运行需要添加支持库

Project References -> Targets -> Build Phases -> Link Binary With Librarys

• libbz.dylib
• libz.dylib
• libiconv.2.4.0.dylib

 

修改头文件搜索路径（头文件下载地址:http://www.ffmpeg4ios.org/releases/ffmpeg4ios-1.0-include.zip）

Project References -> Targets -> Build Settings -> Header Search Paths

 

修改库文件搜索路径（编译出来.a文件的路径）

Project References -> Targets -> Build Settings -> Library Search Paths

 

有疑问者可以留言