ffmpeg交叉

#include <jni.h>
#include <string>
#include <unistd.h>
#include <android/native_window_jni.h>



extern "C" {
   // #include "libavutil/avutil.h"
    #include <libavcodec/avcodec.h>

}

char StrLine[1024]={0};
extern "C" JNIEXPORT jstring JNICALL
Java_com_example_testnativecpp_MainActivity_stringFromJNI(
        JNIEnv* env,
        jobject /* this */) {
    std::string hello = "Hello from C++";
   //av_version_info(
   // return env->NewStringUTF(StrLine);
    return env->NewStringUTF(av_version_info());
}

cmake_minimum_required(VERSION 3.4.1)



#include_directories()

#看来这个Set还是有用的
set(DIR ../../../../libs)

INCLUDE_DIRECTORIES(
        E:/andprogram/andpro/NDKPROS/TestNativeCpp/app/libs/include/
        )


add_library( # Sets the name of the library.
             native-lib
             SHARED
             native-lib.cpp )
set_property(TARGET native-lib PROPERTY IMPORTED_NO_SONAME 1)

find_library( # Sets the name of the path variable.
        log-lib
        log )
find_library( # Sets the name of the path variable.
        android-lib
        android )
#
add_library(avcodec
        SHARED
        IMPORTED)
set_target_properties(avcodec
        PROPERTIES IMPORTED_LOCATION
        ${DIR}/armv7-a/libavcodec.so)

add_library(avformat
        SHARED
        IMPORTED)
set_target_properties(avformat
        PROPERTIES IMPORTED_LOCATION
        ${DIR}/armv7-a/libavformat.so)

add_library(avutil
        SHARED
        IMPORTED)
set_target_properties(avutil
        PROPERTIES IMPORTED_LOCATION
        ${DIR}/armv7-a/libavutil.so)

add_library(postproc
        SHARED
        IMPORTED)
set_target_properties(postproc
        PROPERTIES IMPORTED_LOCATION
        ${DIR}/armv7-a/libpostproc.so)

add_library(swresample
        SHARED
        IMPORTED)
set_target_properties(swresample
        PROPERTIES IMPORTED_LOCATION
        ${DIR}/armv7-a/libswresample.so)

add_library(swscale
        SHARED
        IMPORTED)
set_target_properties(swscale
        PROPERTIES IMPORTED_LOCATION
        ${DIR}/armv7-a/libswscale.so)

add_library(avfilter
        SHARED
        IMPORTED)
set_target_properties(avfilter
        PROPERTIES IMPORTED_LOCATION
        ${DIR}/armv7-a/libavfilter.so)

#

target_link_libraries( # Specifies the target library.
                       native-lib
                       avfilter
                       avcodec
                       avformat
                       avutil
                       postproc
                       swresample
                       swscale
                       ${log-lib}   ${android-lib})

#!/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
#CPU=x86
ARCH=x86
#HOST=arm-linux
SYSROOT=$NDK/toolchains/llvm/prebuilt/linux-x86_64/sysroot
TOOLCHAIN=$NDK/toolchains/llvm/prebuilt/linux-x86_64/bin
PREFIX=$(pwd)/android/$ARCH

configure()
{
    ./configure
    --prefix=$PREFIX
    --toolchain=clang-usan
    --enable-cross-compile
    --target-os=android
    --arch=$ARCH
    --sysroot=$SYSROOT
    #--cc=$TOOLCHAIN/armv7a-linux-androideabi21-clang
    #--cxx=$TOOLCHAIN/armv7a-linux-androideabi21-clang++
     --cc =$TOOLCHAIN/i686-linux-android21-clang
    --cxx=$TOOLCHAIN/i686-linux-android21-clang++ 
 #   --strip=$TOOLCHAIN/arm-linux-androideabi-strip
   --strip=$TOOLCHAIN/i686-linux-android-strip
 #   --extra-cflags="$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
}

build