此文件主要目的是用FFmpeg编译iOS平台的静态库,网上此类文章较多,我就不在此过多陈述,以下脚本均由本人测试及正常使用过后总结。若CSDN积分富裕,可直接下载脚本按照上面注意事项修改之后进行编译:传送门。
环境
FFmpeg:3.4.2
Mac:10.13.5
Xcode:9.4
iOS Target:8.0
脚本
#!/bin/sh
#armv7xcode9.1,
#sudo xcode-select -switch pathToXcode9.1/Contents/Developer
#xcode-select --print-path
#需要编译FFpmeg版本号
FF_VERSION="3.4.2"
if [[ $FFMPEG_VERSION != "" ]]; then
FF_VERSION=$FFMPEG_VERSION
fi
SOURCE="ffmpeg-$FF_VERSION"
#输出路径
FAT="FFmpeg-iOS"
SCRATCH=`pwd`/"scratch"
THIN=`pwd`/"thin"
#编译之前需要删除临时缓存文件夹,防止和之前编译的或fdk-aac冲突
rm -rf "$SCRATCH"
rm -rf "$THIN"
#若不需要x264,fdk-aac可屏蔽以下2行
#X264=`pwd`/x264-iOS
#FDK_AAC=`pwd`/fdk-aac-ios
CONFIGURE_FLAGS="--enable-cross-compile --disable-debug --disable-programs --disable-doc --enable-pic --enable-static --disable-shared"
if [ "$X264" ]
then
CONFIGURE_FLAGS="$CONFIGURE_FLAGS --enable-gpl --enable-libx264"
fi
if [ "$FDK_AAC" ]
then
CONFIGURE_FLAGS="$CONFIGURE_FLAGS --enable-libfdk-aac --enable-nonfree"
fi
ARCHS="armv7 armv7s arm64 x86_64 i386"
COMPILE="y"
LIPO="y"
DEPLOYMENT_TARGET="8.0"
if [ "$*" ]
then
if [ "$*" = "lipo" ]
then
COMPILE=
else
ARCHS="$*"
if [ $# -eq 1 ]
then
LIPO=
fi
fi
fi
if [ "$COMPILE" ]
then
if [ ! `which yasm` ]
then
echo 'Yasm not found'
if [ ! `which brew` ]
then
echo 'Homebrew not found. Trying to install...'
ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" \
|| exit 1
fi
echo 'Trying to install Yasm...'
brew install yasm || exit 1
fi
if [ ! `which gas-preprocessor.pl` ]
then
echo 'gas-preprocessor.pl not found. Trying to install...'
(curl -L https://github.com/libav/gas-preprocessor/raw/master/gas-preprocessor.pl \
-o /usr/local/bin/gas-preprocessor.pl \
&& chmod +x /usr/local/bin/gas-preprocessor.pl) \
|| exit 1
fi
if [ ! -r $SOURCE ]
then
echo "$SOURCE source not found. Trying to download..."
curl http://www.ffmpeg.org/releases/$SOURCE.tar.bz2 | tar xj \
|| exit 1
fi
CWD=`pwd`
for ARCH in $ARCHS
do
echo "building $ARCH..."
mkdir -p "$SCRATCH/$ARCH"
cd "$SCRATCH/$ARCH"
CFLAGS="-arch $ARCH"
if [ "$ARCH" = "i386" -o "$ARCH" = "x86_64" ]
then
PLATFORM="iPhoneSimulator"
CFLAGS="$CFLAGS -mios-simulator-version-min=$DEPLOYMENT_TARGET"
else
PLATFORM="iPhoneOS"
CFLAGS="$CFLAGS -mios-version-min=$DEPLOYMENT_TARGET -fembed-bitcode"
if [ "$ARCH" = "arm64" ]
then
EXPORT="GASPP_FIX_XCODE5=1"
fi
fi
XCRUN_SDK=`echo $PLATFORM | tr '[:upper:]' '[:lower:]'`
CC="xcrun -sdk $XCRUN_SDK clang"
if [ "$ARCH" = "arm64" ]
then
AS="gas-preprocessor.pl -arch aarch64 -- $CC"
else
AS="gas-preprocessor.pl -- $CC"
fi
CXXFLAGS="$CFLAGS"
LDFLAGS="$CFLAGS"
if [ "$X264" ]
then
CFLAGS="$CFLAGS -I$X264/include"
LDFLAGS="$LDFLAGS -L$X264/lib"
fi
if [ "$FDK_AAC" ]
then
CFLAGS="$CFLAGS -I$FDK_AAC/include"
LDFLAGS="$LDFLAGS -L$FDK_AAC/lib"
fi
TMPDIR=${TMPDIR/%\/} $CWD/$SOURCE/configure \
--target-os=darwin \
--arch=$ARCH \
--cc="$CC" \
--as="$AS" \
$CONFIGURE_FLAGS \
--extra-cflags="$CFLAGS" \
--extra-ldflags="$LDFLAGS" \
--prefix="$THIN/$ARCH" \
|| exit 1
make -j3 install $EXPORT || exit 1
cd $CWD
done
fi
if [ "$LIPO" ]
then
echo "building fat binaries..."
mkdir -p $FAT/lib
set - $ARCHS
CWD=`pwd`
cd $THIN/$1/lib
for LIB in *.a
do
cd $CWD
echo lipo -create `find $THIN -name $LIB` -output $FAT/lib/$LIB 1>&2
lipo -create `find $THIN -name $LIB` -output $FAT/lib/$LIB || exit 1
done
cd $CWD
cp -rf $THIN/$1/include $FAT
fi
echo "iOS FFmpeg bulid success!"
将上面脚本代码粘贴到build-ffmpeg-iOS.sh中,修改脚本执行权限:
sudo chmod 777 build-ffmpeg-iOS.sh
闲话
1、脚本文件参考kewlbear,本人略作了修改;
2、FFmpeg源码不需要下载,脚本中已包含自动下载功能,若编译其他版本可修改FF_VERSION="3.4.2"中的值;
3、此脚本已包含armv7框架,若不需要移除ARCHS="armv7 armv7s arm64 x86_64 i386"中的armv7。若使用Xcode编译出错,需要自行下载Xcode9或Xcode9.1,执行Xcode编译环境切换命令:
sudo xcode-select -switch Xcode9.1路径/Contents/Developer
4、脚本已关闭x264、fdk-aac的编译连接,若需要可自行打开。需要x264、fdk-aac的编译脚本,可下载上面的资源。
5、若有什么问题或建议,欢迎留言。
FFmpeg3.1.1版本已编译库:传送门,大于此版本的库因裁减较少,资源较大,请自行编译。