Get best of the week

рдПрдВрдбреНрд░реЙрдЗрдб рдХреЗ рд▓рд┐рдП рдПрдХ рджреЗрд╢реА рдкреБрд╕реНрддрдХрд╛рд▓рдп рдХрд╛ рдирд┐рд░реНрдорд╛рдг рдХреИрд╕реЗ рдХрд░реЗрдВ

рджреЗрд╢реА рдХреЛрдб рдХреА рдПрдХ рдЫреЛрдЯреА рд░рд╛рд╢рд┐ рдХреЗ рд╕рд╛рде рдПрдкреНрд▓рд┐рдХреЗрд╢рди рдХреЛ рдмрдирд╛рдирд╛ рдФрд░ рдмрдирд╛рдирд╛ рдЖрд╕рд╛рди рд╣реИред рдпрджрд┐ рдЖрдк рдПрдХ рджреЗрд╢реА рдкреБрд╕реНрддрдХрд╛рд▓рдп рдХрд╛ рдЙрдкрдпреЛрдЧ рдХрд░рдирд╛ рдЪрд╛рд╣рддреЗ рд╣реИрдВ, рдЬрд┐рд╕рдореЗрдВ рдХрдИ рдлрд╛рдЗрд▓реЗрдВ рд╣реИрдВ, рддреЛ рдпрд╣ рдЕрдзрд┐рдХ рдХрдард┐рди рд╣реЛ рдЬрд╛рддрд╛ рд╣реИред рдХрдард┐рдирд╛рдИ рдпрд╣ рд╣реИ рдХрд┐ рджреЗрд╢реА рдкреБрд╕реНрддрдХрд╛рд▓рдпреЛрдВ рдХреЛ рд╕реНрд░реЛрдд рдХреЛрдб рдХреЗ рд░реВрдк рдореЗрдВ рд╡рд┐рддрд░рд┐рдд рдХрд┐рдпрд╛ рдЬрд╛рддрд╛ рд╣реИ рдЬрд┐рд╕реЗ рд╡рд╛рдВрдЫрд┐рдд рдкреНрд░реЛрд╕реЗрд╕рд░ рд╡рд╛рд╕реНрддреБрдХрд▓рд╛ рдХреЗ рд▓рд┐рдП рд╕рдВрдХрд▓рд┐рдд рдХрд░рдиреЗ рдХреА рдЖрд╡рд╢реНрдпрдХрддрд╛ рд╣реЛрддреА рд╣реИред рдПрдХ рдЙрджрд╛рд╣рд░рдг рдХреЗ рд░реВрдк рдореЗрдВ рдУрдкрд╕ рдСрдбрд┐рдпреЛ рдХреЛрдбреЗрдХ рдХрд╛ рдЙрдкрдпреЛрдЧ рдХрд░рдирд╛, рдореИрдВ рдЖрдкрдХреЛ рджрд┐рдЦрд╛рддрд╛ рд╣реВрдВ рдХрд┐ рдпрд╣ рдХреИрд╕реЗ рдХрд░рдирд╛ рд╣реИред


рдЫрд╡рд┐


Opus , Android, Opus, . - .so .a, , C/C++ . . Opus , NDK .so .a, Android-.


, C/C++, . Opus (.a).


C , . #include <fileWithHeaders.h>. C , (.a), #include <fileWithHeaders.h> . (.so), . , , , .


.so . , Opus , Android, . libjniopus.so , libopus.a, libopus.so.


NDK c 19 ┬л ┬╗. , . , , , . , .


Opus


: (git clone), . Opus Autoconf тАФ , . Autoconf toolchain , ENV-. Autoconf, , Unix . Windows, , , .


4 .a : armeabi-v7a, arm64-v8a, x86, x86-64.


ENV-. NDK, HOST_TAG TOOLCHAIN. Linux, ENV- , export:


export NDK=/home/vital/Android/Sdk/ndk/20.1.5948944
export HOST_TAG=linux-x86_64
export TOOLCHAIN=$NDK/toolchains/llvm/prebuilt/$HOST_TAG

ENV- , , . , . ENV- , .bashrc, (~). .bashrc. , , . ENV-, :


# arm64-v8a
export AR=$TOOLCHAIN/bin/aarch64-linux-android-ar
export AS=$TOOLCHAIN/bin/aarch64-linux-android-as
export CC=$TOOLCHAIN/bin/aarch64-linux-android21-clang
export CXX=$TOOLCHAIN/bin/aarch64-linux-android21-clang++
export LD=$TOOLCHAIN/bin/aarch64-linux-android-ld
export RANLIB=$TOOLCHAIN/bin/aarch64-linux-android-ranlib
export STRIP=$TOOLCHAIN/bin/aarch64-linux-android-strip

# armeabi-v7a
export AR=$TOOLCHAIN/bin/arm-linux-androideabi-ar
export AS=$TOOLCHAIN/bin/arm-linux-androideabi-as
export CC=$TOOLCHAIN/bin/armv7a-linux-androideabi21-clang
export CXX=$TOOLCHAIN/bin/armv7a-linux-androideabi21-clang++
export LD=$TOOLCHAIN/bin/arm-linux-androideabi-ld
export RANLIB=$TOOLCHAIN/bin/arm-linux-androideabi-ranlib
export STRIP=$TOOLCHAIN/bin/arm-linux-androideabi-strip

# x86
export AR=$TOOLCHAIN/bin/i686-linux-android-ar
export AS=$TOOLCHAIN/bin/i686-linux-android-as
export CC=$TOOLCHAIN/bin/i686-linux-android21-clang
export CXX=$TOOLCHAIN/bin/i686-linux-android21-clang++
export LD=$TOOLCHAIN/bin/i686-linux-android-ld
export RANLIB=$TOOLCHAIN/bin/i686-linux-android-ranlib
export STRIP=$TOOLCHAIN/bin/i686-linux-android-strip

# x86-64
export AR=$TOOLCHAIN/bin/x86_64-linux-android-ar
export AS=$TOOLCHAIN/bin/x86_64-linux-android-as
export CC=$TOOLCHAIN/bin/x86_64-linux-android21-clang
export CXX=$TOOLCHAIN/bin/x86_64-linux-android21-clang++
export LD=$TOOLCHAIN/bin/x86_64-linux-android-ld
export RANLIB=$TOOLCHAIN/bin/x86_64-linux-android-ranlib
export STRIP=$TOOLCHAIN/bin/x86_64-linux-android-strip

arm64-v8a, .bashrc ENV- . , CC CXX 21, Android API level. , , minSdkVersion. 21, , . NDK 16 29 32- ABI (armeabi-v7a x86) 21 29 64- ABI (arm64-v8a x86-64).


, ENV-, toolchain , Opus. Readme Opus , - :


$ ./autogen.sh
$ ./configure
$ make

. , 4 .


NDK r19 ┬л ┬╗ toolchains. , ENV- ( .bashrc), , . configure host. arm64-v8a :


$ source ~/.bashrc
$ ./autogen.sh
$ ./configure --host aarch64-linux-android
$ make

source ~/.bashrc , ┬л┬╗ .


, Opus .libs. , libopus.a.


.bashrc /, ENV- armeabi-v7a, host:


$ source ~/.bashrc
$ ./configure --host armv7a-linux-androideabi
$ make

./autogen.sh , configure, .


make . , - . , , , , ( configure host). , , , , , .


. , Opus. , .


- 4 ENV- . , bash-, . :


#!/bin/bash
export NDK=/home/vital/Android/Sdk/ndk/20.1.5948944
export HOST_TAG=linux-x86_64
export TOOLCHAIN=$NDK/toolchains/llvm/prebuilt/$HOST_TAG

if [[ $# -ne 3 && $# -ne 2 ]] 
then
  echo "You should specify at least minSdkVersion and path to Opus directory"
  echo "Example ./buildOpus.sh 21 <pathToOpusDir> <pathToBuildDir>"
  exit
fi

# minSdkVersion that will used for complinig Opus source
minSdk=$1

# Path to directory where Opus sources are located
opusPath=$2

# Path to directory where to place build artifacts
# By default it creates dir where this script is located
if [[ $# -eq 3 ]]
then
  buildPath=$3
else
  buildPath=./opus_android_build
  if [[ -d $buildPath ]]; then
    echo "opus_android_build directory already existed..."
    echo "clearing opus_android_build directory..."
    rm -rfv $buildPath && mkdir $buildPath
  else
    echo "creating opus_android_build directory..."
    mkdir opus_android_build
  fi
fi

echo "Executing autogen.sh"
$opusPath/autogen.sh

if [[ $minSdk -lt 21 ]]
then
  triples=("armv7a-linux-androideabi" "i686-linux-android")
  abis=("armeabi-v7a" "x86")
else
  triples=("aarch64-linux-android" "armv7a-linux-androideabi" "i686-linux-android" "x86_64-linux-android")
  abis=("arm64-v8a" "armeabi-v7a" "x86" "x86-64")  
fi

BIN=$TOOLCHAIN/bin
cd $buildPath 

for i in ${!triples[@]}
do
  triple=${triples[$i]}
  abi=${abis[$i]}
  echo "Building $abi..."

  if [[ $triple == "armv7a-linux-androideabi" ]]
  then
    export AR=$BIN/arm-linux-androideabi-ar
    export AS=$BIN/arm-linux-androideabi-as
    export CC=$BIN/$triple$minSdk-clang
    export CXX=$BIN/$triple$minSdk-clang++
    export LD=$BIN/arm-linux-androideabi-ld
    export RANLIB=$BIN/arm-linux-androideabi-ranlib
    export STRIP=$BIN/arm-linux-androideabi-strip
  else
    export AR=$BIN/$triple-ar
    export AS=$BIN/$triple-as
    export CC=$BIN/$triple$minSdk-clang
    export CXX=$BIN/$triple$minSdk-clang++
    export LD=$BIN/$triple-ld
    export RANLIB=$BIN/$triple-ranlib
    export STRIP=$BIN/$triple-strip
  fi

  mkdir $abi && cd $abi 
  $opusPath/configure --host $triple
  make
  cd ..  
done

echo "Artifacts successfully built for minSdkVersion=$minSdk and ABIs:" 
printf '%s ' "${abis[@]}"
echo ""
echo "Artifacts are located in .libs directory"

, ENV- .bashrc , .


, :


$ sudo chmod +x buildOpus.sh

NDK HOST_TAG, Linux ( linux-x86_64):


  • 32-bit Windows: windows
  • 64-bit Windows: windows-x86_64
  • macOS: darwin-x86_64

:


$ ./buildOpus.sh 21 <pathToOpusDir> <pathToBuildDir>

minSdkVersion Opus. , . opus_android_build , buildOpus.sh.


. opus_android_build , , ABI, . , .libs, .



, 4 libopus.a , . Android- CmakeLists.txt, .so Opus.


app/src/main/cpp, C- (jniopus.c), external Kotlin. includes. include Opus. (.h). Opus C-. , , .


app/src/main/cpp libopus, 4 , ABI, Opus: armeabi-v7a, arm64-v8a, x86, x86-64. libopus.a, .


CmakeLists.txt, , Opus . ┬л┬╗ . :


set(NATIVE_SOURCES_PATH "${PROJECT_SOURCE_DIR}/src/main/cpp")
set(OPUS_HEADERS_PATH "${NATIVE_SOURCES_PATH}/includes")
set(OPUS_LIB_PATH "${NATIVE_SOURCES_PATH}/libopus")

Opus :


add_library(
        libopus
        STATIC
        IMPORTED)

add_library . , , STATIC(.a) SHARED(.so) , IMPORTED, . () :


set_target_properties( # Specifies the target library.
        libopus PROPERTIES
        IMPORTED_LOCATION "${OPUS_LIB_PATH}/${ANDROID_ABI}/libopus.a")

ANDROID_ABI NDK toolchain , ABI.


-, external Kotlin, :


add_library( # Sets the name of the library.
        jniopus

        # Sets the library as a shared library.
        SHARED

        # Provides a relative path to your source file(s).
        ${NATIVE_SOURCES_PATH}/jniopus.c)

, ┬л ┬╗ NDK :


find_library( # Sets the name of the path variable.
        log-lib

        # Specifies the name of the NDK library that
        # you want CMake to locate.
        log)

:


target_link_libraries(
        # Specifies the target library.
        jniopus

        # Specifies the libraries that should be linked to our target
        libopus ${log-lib})

, , . , Gradle, Run, . , Start call . , , .



, NDK toolchains ABI . , CmakeLists.txt . , Autoconf , pre-19 NDK, . , , .



┬л Android┬╗: https://vk.com/@forasoft-kak-ispolzovat-nativnye-biblioteki-v-android


: https://gitlab.com/vitaliybelyaev/opus-android


Opus codec: http://opus-codec.org/, https://github.com/xiph/opus


Using the NDK with other build systems: https://developer.android.com/ndk/guides/other_build_systems


Android- CMake: https://developer.android.com/studio/projects/add-native-code#create-cmake-script


ABI Android: https://developer.android.com/ndk/guides/abis

Source: https://habr.com/ru/post/undefined/

More articles:


All Articles