ndk ffmpeg

参考这个 https://blog.csdn.net/bobcat_kay/article/details/80889398

下载r17 的ndk(按文章版本)和最新的ffmpeg

建立 build.sh

#!/bin/bash
NDK=/home/wang/program/android-ndk-r19c
ADDI_LDFLAGS="-fPIE -pie"
ADDI_CFLAGS="-fPIE -pie -march=armv7-a -mfloat-abi=softfp -mfpu=neon"
CPU=armv7-a
ARCH=arm
HOST=arm-linux
SYSROOT=$NDK/toolchains/llvm/prebuilt/linux-x86_64/sysroot
TOOLCHAIN=$NDK/toolchains/llvm/prebuilt/linux-x86_64/bin
PREFIX=$(pwd)/android/$CPU   #这个要有生成的文件在这

configure()
{
    ./configure 
    --prefix=$PREFIX 
    --toolchain=clang-usan 
    --enable-cross-compile 
    --target-os=android 
    --arch=$ARCH 
    --sysroot=$SYSROOT 
    --cc=$TOOLCHAIN/armv7a-linux-androideabi21-clang 
    --cxx=$TOOLCHAIN/armv7a-linux-androideabi21-clang++ 
    --strip=$TOOLCHAIN/arm-linux-androideabi-strip 
    --extra-cflags="$ADDI_CFLAGS" 
    --extra-ldflags="$ADDI_LDFLAGS" 
    --disable-encoders 
    --disable-decoders 
    --disable-avdevice 
    --disable-static 
    --disable-doc 
    --disable-ffplay 
    --disable-network 
    --disable-doc 
    --disable-symver 
    --disable-ffprobe 
    --enable-neon 
    --enable-shared 
    --enable-gpl 
    --enable-pic 
    --enable-jni 
    --enable-pthreads 
    --enable-mediacodec 
    --enable-encoder=aac 
    --enable-encoder=gif 
    --enable-encoder=libopenjpeg 
    --enable-encoder=libmp3lame 
    --enable-encoder=libwavpack 
    --enable-encoder=mpeg4 
    --enable-encoder=pcm_s16le 
    --enable-encoder=png 
    --enable-encoder=mjpeg 
    --enable-encoder=srt 
    --enable-encoder=subrip 
    --enable-encoder=yuv4 
    --enable-encoder=text 
    --enable-decoder=aac 
    --enable-decoder=aac_latm 
    --enable-decoder=libopenjpeg 
    --enable-decoder=mp3 
    --enable-decoder=mpeg4_mediacodec 
    --enable-decoder=pcm_s16le 
    --enable-decoder=flac 
    --enable-decoder=flv 
    --enable-decoder=gif 
    --enable-decoder=png 
    --enable-decoder=srt 
    --enable-decoder=xsub 
    --enable-decoder=yuv4 
    --enable-decoder=vp8_mediacodec 
    --enable-decoder=h264_mediacodec 
    --enable-decoder=hevc_mediacodec 
    --enable-bsf=aac_adtstoasc 
    --enable-bsf=h264_mp4toannexb 
    --enable-bsf=hevc_mp4toannexb 
    --enable-bsf=mpeg4_unpack_bframes

}

build()
{
    configure
    make clean
    make -j4
    make install
}

编译

这个网址可用来学习https://www.jianshu.com/p/9d8322e5de7f

https://www.jianshu.com/p/56de0e463ef4