一. 环境说明

系统环境：ubuntu
ffmpeg版本：4.2.2
ndk版本：android-ndk-r20b

二.编译脚本：build_android.sh

#!/bin/bash

# 清空上次的编译

make clean

#你自己的NDK路径.

export NDK=/home/liuyi/ndk/android-ndk-r20b

TOOLCHAIN=$NDK/toolchains/llvm/prebuilt/linux-x86_64

API=29

function build_android

{

echo "Compiling FFmpeg for $CPU"

./configure \
--prefix=$PREFIX \
--enable-neon \
--enable-hwaccels \
--enable-gpl \
--enable-postproc \
--enable-shared \
--enable-jni \
--enable-mediacodec \
--enable-decoder=h264_mediacodec \
--disable-decoders \
--enable-decoder=aac \
--enable-decoder=aac_latm \
--enable-decoder=mjpeg \
--enable-decoder=png \
--enable-decoder=mpeg4_mediacodec \
--disable-static \
--disable-doc \
--enable-ffmpeg \
--disable-ffplay \
--disable-ffprobe \
--enable-avdevice \
--disable-doc \
--disable-symver \
--cross-prefix=$CROSS_PREFIX \
--target-os=android \
--arch=$ARCH \
--cpu=$CPU \
--cc=$CC
--cxx=$CXX
--enable-cross-compile \
--sysroot=$SYSROOT \
--extra-cflags="-Os -fpic $OPTIMIZE_CFLAGS" \
--extra-ldflags="$ADDI_LDFLAGS" \
$ADDITIONAL_CONFIGURE_FLAG
make clean
make
make install
echo "The Compilation of FFmpeg for $CPU is completed"
}

#armv8-a

ARCH=arm64

CPU=armv8-a

CC=$TOOLCHAIN/bin/aarch64-linux-android$API-clang

CXX=$TOOLCHAIN/bin/aarch64-linux-android$API-clang++

SYSROOT=$NDK/toolchains/llvm/prebuilt/linux-x86_64/sysroot

CROSS_PREFIX=$TOOLCHAIN/bin/aarch64-linux-android-

PREFIX=$(pwd)/android/$CPU

OPTIMIZE_CFLAGS="-march=$CPU"

build_android

#armv7-a

ARCH=arm

CPU=armv7-a

CC=$TOOLCHAIN/bin/armv7a-linux-androideabi$API-clang

CXX=$TOOLCHAIN/bin/armv7a-linux-androideabi$API-clang++

SYSROOT=$NDK/toolchains/llvm/prebuilt/linux-x86_64/sysroot

CROSS_PREFIX=$TOOLCHAIN/bin/arm-linux-androideabi-

PREFIX=$(pwd)/android/$CPU

OPTIMIZE_CFLAGS="-mfloat-abi=softfp -mfpu=vfp -marm -march=$CPU "

build_android

#x86

ARCH=x86

CPU=x86

CC=$TOOLCHAIN/bin/i686-linux-android$API-clang

CXX=$TOOLCHAIN/bin/i686-linux-android$API-clang++

SYSROOT=$NDK/toolchains/llvm/prebuilt/linux-x86_64/sysroot

CROSS_PREFIX=$TOOLCHAIN/bin/i686-linux-android-

PREFIX=$(pwd)/android/$CPU

OPTIMIZE_CFLAGS="-march=i686 -mtune=intel -mssse3 -mfpmath=sse -m32"

build_android

#x86_64

ARCH=x86_64

CPU=x86-64

CC=$TOOLCHAIN/bin/x86_64-linux-android$API-clang

CXX=$TOOLCHAIN/bin/x86_64-linux-android$API-clang++

SYSROOT=$NDK/toolchains/llvm/prebuilt/linux-x86_64/sysroot

CROSS_PREFIX=$TOOLCHAIN/bin/x86_64-linux-android-

PREFIX=$(pwd)/android/$CPU

OPTIMIZE_CFLAGS="-march=$CPU -msse4.2 -mpopcnt -m64 -mtune=intel"

build_android
 

三.编译结果

image.png