Android NDK 交叉编译FFmpeg

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编译ffmpeg源码

#!/bin/bash
echo "进入编译ffmpeg脚本"
NDK=/root/ff/android-ndk-r14b
#5.0
PLATFORM=$NDK/platforms/android-21/arch-arm
TOOLCHAIN=$NDK/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64
CPU=armv7-a
#输出路径
PREFIX=./android/$CPU
function buildFF
{
	echo "开始编译ffmpeg"
	./configure 
    --prefix=$PREFIX 
    --target-os=android 
    --cross-prefix=$TOOLCHAIN/bin/arm-linux-androideabi- 
    --arch=arm 
    --cpu=$CPU  
    --sysroot=$PLATFORM 
    --extra-cflags="$CFLAG" 
    --cc=$TOOLCHAIN/bin/arm-linux-androideabi-gcc 
    --nm=$TOOLCHAIN/bin/arm-linux-androideabi-nm 
    --enable-shared 
    --enable-runtime-cpudetect 
    --enable-gpl 
    --enable-small 
    --enable-cross-compile 
    --disable-debug 
    --disable-static 
    --disable-doc 
    --disable-ffmpeg 
    --disable-ffplay 
    --disable-ffprobe 
    --disable-ffserver 
    --disable-postproc 
    --disable-avdevice 
    --disable-symver 
    --disable-stripping 
    $ADD 
    make -j16
    make install
	echo "编译结束！"
}
###########################################################
echo "编译支持neon和硬解码"
CPU=armv7-a
PREFIX=./android/armv7-a-neon-hard
CFLAG="-I$PLATFORM/usr/include -fPIC -DANDROID -mfpu=neon -mfloat-abi=softfp "
ADD="--enable-asm 
    --enable-neon 
    --enable-jni 
    --enable-mediacodec 
    --enable-decoder=h264_mediacodec 
    --enable-hwaccel=h264_mediacodec "
buildFF

###########################################################
echo "编译不支持neon和硬解码"
CPU=armv7-a
PREFIX=./android/$CPU
CFLAG="-I$PLATFORM/usr/include -fPIC -DANDROID -mfpu=vfp -mfloat-abi=softfp "
ADD=
buildFF