FFmpeg+xh264+libaac(音频解码) 集成编译

网上看了许多的微博，关于这个方面的很少，所以想写点傻瓜式的，新手一看就会，还不要那么麻烦。方便研究底层的同学。

先下载FFmpeg和x264都会用到的脚本

下载gas-pregprcessor 将文件放到/usr/local/bin的文件夹下

首先是编译下x264

1 先去官网下载x264解码器源码 解压 

2 下载x264执行脚本 

将脚本 和 源码放在同级目录下

终端执行 ./build-x264.sh 脚本即可 

3  编译libaac 参考这个这个大神的微博 执行脚本文件 注意

4 下载FFmpeg源码

FFmpeg执行脚本 将编译好的

#!/bin/sh

# directories

SOURCE="ffmpeg-3.2"

FAT="FFmpeg-iOS"

SCRATCH="scratch"

# must be an absolute path

THIN=`pwd`/"thin"

# absolute path to x264 library

X264=`pwd`/fat-x264

FDK_AAC=`pwd`/../fdk-aac-build-script-for-iOS/fdk-aac-ios

CONFIGURE_FLAGS="--enable-cross-compile --disable-debug --disable-programs \

--disable-doc --enable-pic"

if["$X264"]

then

CONFIGURE_FLAGS="$CONFIGURE_FLAGS --enable-gpl --enable-libx264"

fi

if["$FDK_AAC"]

then

CONFIGURE_FLAGS="$CONFIGURE_FLAGS --enable-libfdk-aac"

fi

# avresample

#CONFIGURE_FLAGS="$CONFIGURE_FLAGS --enable-avresample"

ARCHS="arm64 armv7 x86_64 i386"

COMPILE="y"

LIPO="y"

DEPLOYMENT_TARGET="6.0"

if["$*"]

then

if["$*"="lipo"]

then

# skip compile

COMPILE=

else

ARCHS="$*"

if[ $# -eq1]

then

# skip lipo

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)"\

||exit1

fi

echo'Trying to install Yasm...'

brew install yasm ||exit1

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) \

||exit1

fi

if[ ! -r $SOURCE ]

then

echo'FFmpeg source not found. Trying to download...'

curl http://www.ffmpeg.org/releases/$SOURCE.tar.bz2 | tar xj \

||exit1

fi

CWD=`pwd`

forARCHin$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"

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"\

$CONFIGURE_FLAGS \

--extra-cflags="$CFLAGS"\

--extra-ldflags="$LDFLAGS"\

--prefix="$THIN/$ARCH"\

||exit1

make -j3 install $EXPORT ||exit1

cd $CWD

done

fi

if["$LIPO"]

then

echo"building fat binaries..."

mkdir -p $FAT/lib

set - $ARCHS

CWD=`pwd`

cd $THIN/$1/lib

forLIBin*.a

do

cd $CWD

echo lipo -create`find $THIN -name $LIB`-output $FAT/lib/$LIB1>&2

lipo -create`find $THIN -name $LIB`-output $FAT/lib/$LIB ||exit1

done

cd $CWD

cp -rf $THIN/$1/include $FAT

fi

echo Done