啃论文俱乐部——移植speexdsp到OpenHarmony标准系统①

大家好！我来自南京，在OpenHarmony成长计划啃论文俱乐部，与华为、软通动力、润和软件、拓维信息、深开鸿等公司一起，学习和研究操作系统技术，
从今年1月11日加入OpenHarmony俱乐部已经有接近8个月时间了。笔者一直在思考啃论文给我带来了些什么，通过啃论文能为OpenHarmony做些什么。笔者利用大二升大三暑假两个月时间移植了Speexdsp这个三方库到OpenHarmony标准系统，而关于前面的问题我似乎找到了答案，现将啃论文和三方库移植分享经验如下：

由于想要分享的内容较多，为避免观众姥爷们失去看下去的耐心，分享将以连载的方式进行。

本期为移植speexdsp到OpenHarmony标准系统的第①期，主要内容如下：

Speexdsp

提到Speexdsp不得不先提到开源语音编解码器Speex

如下是ACM Surveys中收录的标题为《Survey on Application-Layer Mechanisms for Speech Quality Adaptation in VoIP》综述中的一张图表。

它总结了一些常用的可变比特率编解码器，并且做了性能方面的比较。
其中唯一Open-source开源的两个编解码器之一就是speex。

2007年12月11日Speex1.2beta3中首次将Speex中所有非编解码器组件（预处理器、回声消除、抖动缓冲区）都已移至新的libspeexdsp中。
2014年12月6日推出的Speex 1.2rc2和SpeexDSP1.2rc2正式将speex编解码器库和speexDSP库拆分为单独的源代码。

Speexdsp功能

预处理器

预处理器被设计为在运行编码器之前在音频上使用。预处理器提供三个主要功能:

噪声抑制
自动增益控制(AGC)
语音活动检测(VAD)

自适应抖动缓冲区

当通过UDP或RTP传输语音(或任何相关内容)时，包可能会丢失，以不同的延迟到达，甚至乱序。
抖动缓冲区的目的是重新排序数据包，并缓冲足够长的时间，以便它们可以被发送以进行解码。

声学回声消除器

回声消除是为了提高远端质量

在任何免提通信系统中，远端语音通过本地扬声器播放。音频在房间内传播，并被麦克风捕获。如果从麦克风捕获的音频被直接发送到远程端，那么用户就会听到远端语音的回声。声学回声消除器设计用于在声学回声发送到远端之前消除它。

重采样器

这个重采样器可以用于在任意两个速率之间进行转换(比率必须是有理数)，并且可以控制质量/复杂性的权衡。

重采样器在某些情况下将音频从一个采样率转换到另一个采样率。
它可以用于混合具有不同采样率的流、用于支持声卡不支持的采样率、用于转码等。

Speexdsp移植到OpenHarmony标准系统

OpenHarmony三方库主要是基于标准 Linux 系统的 c/c++ 开源库，所以三方库的移植工作，首先是在标准 Linux 系统搭建环境、编译与验证，然后将三方库的编译加入到 OpenHarmony 工程的构建中。

三方库移植的主要开发步骤如下：

在标准Linux系统下载三方库源码，搭建开发环境，编译整个源码工程；
分析在标准Linux系统的编译过程文件，提取编译需要的源文件、编译依赖等信息；
根据上一步分析结果，编写gn文件，将三方库加入到OpenHarmony的编译体系；
验证编译结果，在OpenHarmony的out目录是否生成目标库；
测试demo/测试单元用例执行。

一、下载源码

下载三方库源码时，优先使用最新版，不要下载master分支，下载最新的版本分支。
移植speexdsp下载的是1.2.1版本。

Speexdsp源码下载地址：https://github.com/xiph/speexdsp

五年级.png

二、搭建开发环境，生成Makefile编译构建speexdsp。

不同的原生三方库提供的编译方式不相同，根据原生三方库的readme文件或者manual用户手册可以知道该如何编译

Speexdsp在linux下的编译安装，在linux终端输入如下语句：

安装make工具。
```
sudo apt-get install make
```
安装autoAutotools工具
```
sudo apt-get install autoconf automake libtool
```
GNU Autotools框架包括三个主要的包：Autoconf，Automake，和Libtool。

GNU软件的构建过程，一般来说，包含三个步骤：
tar xfv xxx.tar.gz
./configure
make
make install
该过程一般依赖两个文件， configure和Makefile文件。
Autoconf/Automake就是一套用于自动构建configure脚本和Makefile文件的工具。

一般使用Makefile.am构建的三方库，原生库中存在autogen.sh,configure.ac文件。由makefile.am自动生成makefile。
```
./autogen.sh
```
./autogen.sh之后我们可以运行./configure --help查看configure配置

./configure --help

jiajiahao@ubuntu:~/Desktop/SpeexDSP-1.2.1$ ./configure --help
`configure' configures speexdsp 1.2.1 to adapt to many kinds of systems.

Usage: ./configure [OPTION]... [VAR=VALUE]...

To assign environment variables (e.g., CC, CFLAGS...), specify them as
VAR=VALUE.  See below for descriptions of some of the useful variables.

Defaults for the options are specified in brackets.

Configuration:
  -h, --help              display this help and exit
      --help=short        display options specific to this package
      --help=recursive    display the short help of all the included packages
  -V, --version           display version information and exit
  -q, --quiet, --silent   do not print `checking ...' messages
      --cache-file=FILE   cache test results in FILE [disabled]
  -C, --config-cache      alias for `--cache-file=config.cache'
  -n, --no-create         do not create output files
      --srcdir=DIR        find the sources in DIR [configure dir or `..']

Installation directories:
  --prefix=PREFIX         install architecture-independent files in PREFIX
                          [/usr/local]
  --exec-prefix=EPREFIX   install architecture-dependent files in EPREFIX
                          [PREFIX]

By default, `make install' will install all the files in
`/usr/local/bin', `/usr/local/lib' etc.  You can specify
an installation prefix other than `/usr/local' using `--prefix',
for instance `--prefix=$HOME'.

For better control, use the options below.

Fine tuning of the installation directories:
  --bindir=DIR            user executables [EPREFIX/bin]
  --sbindir=DIR           system admin executables [EPREFIX/sbin]
  --libexecdir=DIR        program executables [EPREFIX/libexec]
  --sysconfdir=DIR        read-only single-machine data [PREFIX/etc]
  --sharedstatedir=DIR    modifiable architecture-independent data [PREFIX/com]
  --localstatedir=DIR     modifiable single-machine data [PREFIX/var]
  --runstatedir=DIR       modifiable per-process data [LOCALSTATEDIR/run]
  --libdir=DIR            object code libraries [EPREFIX/lib]
  --includedir=DIR        C header files [PREFIX/include]
  --oldincludedir=DIR     C header files for non-gcc [/usr/include]
  --datarootdir=DIR       read-only arch.-independent data root [PREFIX/share]
  --datadir=DIR           read-only architecture-independent data [DATAROOTDIR]
  --infodir=DIR           info documentation [DATAROOTDIR/info]
  --localedir=DIR         locale-dependent data [DATAROOTDIR/locale]
  --mandir=DIR            man documentation [DATAROOTDIR/man]
  --docdir=DIR            documentation root [DATAROOTDIR/doc/speexdsp]
  --htmldir=DIR           html documentation [DOCDIR]
  --dvidir=DIR            dvi documentation [DOCDIR]
  --pdfdir=DIR            pdf documentation [DOCDIR]
  --psdir=DIR             ps documentation [DOCDIR]

Program names:
  --program-prefix=PREFIX            prepend PREFIX to installed program names
  --program-suffix=SUFFIX            append SUFFIX to installed program names
  --program-transform-name=PROGRAM   run sed PROGRAM on installed program names

System types:
  --build=BUILD     configure for building on BUILD [guessed]
  --host=HOST       cross-compile to build programs to run on HOST [BUILD]

Optional Features:
  --disable-option-checking  ignore unrecognized --enable/--with options
  --disable-FEATURE       do not include FEATURE (same as --enable-FEATURE=no)
  --enable-FEATURE[=ARG]  include FEATURE [ARG=yes]
  --enable-silent-rules   less verbose build output (undo: "make V=1")
  --disable-silent-rules  verbose build output (undo: "make V=0")
  --disable-maintainer-mode
                          disable make rules and dependencies not useful (and
                          sometimes confusing) to the casual installer
  --enable-shared[=PKGS]  build shared libraries [default=yes]
  --enable-static[=PKGS]  build static libraries [default=yes]
  --enable-fast-install[=PKGS]
                          optimize for fast installation [default=yes]
  --enable-dependency-tracking
                          do not reject slow dependency extractors
  --disable-dependency-tracking
                          speeds up one-time build
  --disable-libtool-lock  avoid locking (might break parallel builds)
  --enable-sse            Enable SSE support
  --enable-neon           Enable NEON support
  --enable-fixed-point    Compile as fixed-point
  --disable-float-api     Disable the floating-point API
  --disable-examples      Do not build example programs, only the library
  --enable-arm4-asm       Make use of ARM4 assembly optimizations
  --enable-arm5e-asm      Make use of ARM5E assembly optimizations
  --enable-blackfin-asm   Make use of Blackfin assembly optimizations
  --enable-fixed-point-debug  Debug fixed-point implementation
  --enable-resample-full-sinc-table Resample full SINC table (no interpolation)
  --enable-ti-c55x        Enable support for TI C55X DSP

Optional Packages:
  --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
  --without-PACKAGE       do not use PACKAGE (same as --with-PACKAGE=no)
  --with-pic[=PKGS]       try to use only PIC/non-PIC objects [default=use
                          both]
  --with-aix-soname=aix|svr4|both
                          shared library versioning (aka "SONAME") variant to
                          provide on AIX, [default=aix].
  --with-gnu-ld           assume the C compiler uses GNU ld [default=no]
  --with-sysroot[=DIR]    Search for dependent libraries within DIR (or the
                          compiler's sysroot if not specified).
  --with-fft=choice       use an alternate FFT implementation. The available
                          choices are kiss (default fixed point), smallft
                          (default floating point), gpl-fftw3 and
                          proprietary-intel-mkl

Some influential environment variables:
  CC          C compiler command
  CFLAGS      C compiler flags
  LDFLAGS     linker flags, e.g. -L<lib dir> if you have libraries in a
              nonstandard directory <lib dir>
  LIBS        libraries to pass to the linker, e.g. -l<library>
  CPPFLAGS    (Objective) C/C++ preprocessor flags, e.g. -I<include dir> if
              you have headers in a nonstandard directory <include dir>
  LT_SYS_LIBRARY_PATH
              User-defined run-time library search path.
  CPP         C preprocessor
  PKG_CONFIG  path to pkg-config utility
  PKG_CONFIG_PATH
              directories to add to pkg-config's search path
  PKG_CONFIG_LIBDIR
              path overriding pkg-config's built-in search path
  FFT_CFLAGS  C compiler flags for FFT, overriding pkg-config
  FFT_LIBS    linker flags for FFT, overriding pkg-config

Use these variables to override the choices made by `configure' or to help
it to find libraries and programs with nonstandard names/locations.

Report bugs to <speex-dev@xiph.org>.

在下载到linux中的speexdsp中新建build目录
```
mkdir build
```
运行configure命令来生成Makefile。
```
./configure --prefix=/XXX/speexdsp/build -disable-sse
```
SSE是一个X86平台的指令集，所以要移植speexdsp到OpenHarmony过程，configure时要disable掉sse这个配置。否则在加入OpenHarmony编译体系后生成libspeexdsp_share.z.so和在ohos上执行的可执行文件编译过程中会报错。

在linux上生成speexdsp的so动态链接库和.a静态链接库

make和make install后会生成speexdsp的.so动态链接库和.a静态链接库

make
make install

编译安装后build目录结构如下：

整个编译安装过程终端输出log如下：

jiajiahao@ubuntu:~/Desktop/speexdsp-SpeexDSP-1.2.1$ ./autogen.sh
Updating build configuration files, please wait....
libtoolize: putting auxiliary files in '.'.
libtoolize: copying file './ltmain.sh'
libtoolize: putting macros in AC_CONFIG_MACRO_DIRS, 'm4'.
libtoolize: copying file 'm4/libtool.m4'
libtoolize: copying file 'm4/ltoptions.m4'
libtoolize: copying file 'm4/ltsugar.m4'
libtoolize: copying file 'm4/ltversion.m4'
libtoolize: copying file 'm4/lt~obsolete.m4'
configure.ac:26: installing './compile'
configure.ac:24: installing './config.guess'
configure.ac:24: installing './config.sub'
configure.ac:21: installing './install-sh'
configure.ac:21: installing './missing'
libspeexdsp/Makefile.am: installing './depcomp'
jiajiahao@ubuntu:~/Desktop/speexdsp-SpeexDSP-1.2.1$ mkdir build
jiajiahao@ubuntu:~/Desktop/speexdsp-SpeexDSP-1.2.1$ ./configure --prefix=/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/build -disable-sse
checking whether make supports nested variables... yes
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... /usr/bin/mkdir -p
checking for gawk... no
checking for mawk... mawk
checking whether make sets $(MAKE)... yes
checking whether to enable maintainer-specific portions of Makefiles... yes
checking build system type... x86_64-pc-linux-gnu
checking host system type... x86_64-pc-linux-gnu
checking how to print strings... printf
checking whether make supports the include directive... yes (GNU style)
checking for gcc... gcc
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables... 
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ISO C89... none needed
checking whether gcc understands -c and -o together... yes
checking dependency style of gcc... gcc3
checking for a sed that does not truncate output... /usr/bin/sed
checking for grep that handles long lines and -e... /usr/bin/grep
checking for egrep... /usr/bin/grep -E
checking for fgrep... /usr/bin/grep -F
checking for ld used by gcc... /usr/bin/ld
checking if the linker (/usr/bin/ld) is GNU ld... yes
checking for BSD- or MS-compatible name lister (nm)... /usr/bin/nm -B
checking the name lister (/usr/bin/nm -B) interface... BSD nm
checking whether ln -s works... yes
checking the maximum length of command line arguments... 1572864
checking how to convert x86_64-pc-linux-gnu file names to x86_64-pc-linux-gnu format... func_convert_file_noop
checking how to convert x86_64-pc-linux-gnu file names to toolchain format... func_convert_file_noop
checking for /usr/bin/ld option to reload object files... -r
checking for objdump... objdump
checking how to recognize dependent libraries... pass_all
checking for dlltool... dlltool
checking how to associate runtime and link libraries... printf %s\n
checking for ar... ar
checking for archiver @FILE support... @
checking for strip... strip
checking for ranlib... ranlib
checking command to parse /usr/bin/nm -B output from gcc object... ok
checking for sysroot... no
checking for a working dd... /usr/bin/dd
checking how to truncate binary pipes... /usr/bin/dd bs=4096 count=1
checking for mt... mt
checking if mt is a manifest tool... no
checking how to run the C preprocessor... gcc -E
checking for ANSI C header files... yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking for dlfcn.h... yes
checking for objdir... .libs
checking if gcc supports -fno-rtti -fno-exceptions... no
checking for gcc option to produce PIC... -fPIC -DPIC
checking if gcc PIC flag -fPIC -DPIC works... yes
checking if gcc static flag -static works... yes
checking if gcc supports -c -o file.o... yes
checking if gcc supports -c -o file.o... (cached) yes
checking whether the gcc linker (/usr/bin/ld -m elf_x86_64) supports shared libraries... yes
checking whether -lc should be explicitly linked in... no
checking dynamic linker characteristics... GNU/Linux ld.so
checking how to hardcode library paths into programs... immediate
checking whether stripping libraries is possible... yes
checking if libtool supports shared libraries... yes
checking whether to build shared libraries... yes
checking whether to build static libraries... yes
checking whether byte ordering is bigendian... no
checking for an ANSI C-conforming const... yes
checking for inline... inline
checking for C/C++ restrict keyword... __restrict
checking for C99 variable-size arrays... yes
checking for SSE in current arch/CFLAGS... yes
checking for SSE2 in current arch/CFLAGS... yes
checking for NEON in current arch/CFLAGS... no
checking for ELF visibility... yes
checking sys/soundcard.h usability... yes
checking sys/soundcard.h presence... yes
checking for sys/soundcard.h... yes
checking sys/audioio.h usability... no
checking sys/audioio.h presence... no
checking for sys/audioio.h... no
checking for cos in -lm... yes
checking for pkg-config... /usr/bin/pkg-config
checking pkg-config is at least version 0.9.0... yes
checking size of int16_t... 2
checking size of uint16_t... 2
checking size of u_int16_t... 2
checking size of int32_t... 4
checking size of uint32_t... 4
checking size of u_int32_t... 4
checking size of short... 2
checking size of int... 4
checking size of long... 8
checking that generated files are newer than configure... done
configure: creating ./config.status
config.status: creating Makefile
config.status: creating libspeexdsp/Makefile
config.status: creating doc/Makefile
config.status: creating SpeexDSP.spec
config.status: creating include/Makefile
config.status: creating include/speex/Makefile
config.status: creating speexdsp.pc
config.status: creating win32/Makefile
config.status: creating win32/libspeexdsp/Makefile
config.status: creating symbian/Makefile
config.status: creating win32/VS2003/Makefile
config.status: creating win32/VS2003/libspeexdsp/Makefile
config.status: creating win32/VS2003/tests/Makefile
config.status: creating win32/VS2005/Makefile
config.status: creating win32/VS2005/libspeexdsp/Makefile
config.status: creating win32/VS2005/tests/Makefile
config.status: creating win32/VS2008/Makefile
config.status: creating win32/VS2008/libspeexdsp/Makefile
config.status: creating win32/VS2008/tests/Makefile
config.status: creating include/speex/speexdsp_config_types.h
config.status: creating ti/Makefile
config.status: creating ti/speex_C54_test/Makefile
config.status: creating ti/speex_C55_test/Makefile
config.status: creating ti/speex_C64_test/Makefile
config.status: creating config.h
config.status: executing depfiles commands
config.status: executing libtool commands
Type "make; make install" to compile and install Speex
jiajiahao@ubuntu:~/Desktop/speexdsp-SpeexDSP-1.2.1$ make
make  all-recursive
make[1]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1”
Making all in libspeexdsp
make[2]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/libspeexdsp”
  CC       preprocess.lo
  CC       jitter.lo
  CC       mdf.lo
  CC       fftwrap.lo
  CC       filterbank.lo
  CC       resample.lo
  CC       buffer.lo
  CC       scal.lo
  CC       smallft.lo
  CCLD     libspeexdsp.la
make[2]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/libspeexdsp”
Making all in include
make[2]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/include”
Making all in speex
make[3]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/include/speex”
make[3]: 对“all”无需做任何事。
make[3]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/include/speex”
make[3]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/include”
make[3]: 对“all-am”无需做任何事。
make[3]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/include”
make[2]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/include”
Making all in doc
make[2]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/doc”
make[2]: 对“all”无需做任何事。
make[2]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/doc”
Making all in win32
make[2]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32”
Making all in libspeexdsp
make[3]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/libspeexdsp”
make[3]: 对“all”无需做任何事。
make[3]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/libspeexdsp”
Making all in VS2003
make[3]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2003”
Making all in libspeexdsp
make[4]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2003/libspeexdsp”
make[4]: 对“all”无需做任何事。
make[4]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2003/libspeexdsp”
Making all in tests
make[4]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2003/tests”
make[4]: 对“all”无需做任何事。
make[4]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2003/tests”
make[4]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2003”
make[4]: 对“all-am”无需做任何事。
make[4]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2003”
make[3]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2003”
Making all in VS2005
make[3]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2005”
Making all in libspeexdsp
make[4]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2005/libspeexdsp”
make[4]: 对“all”无需做任何事。
make[4]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2005/libspeexdsp”
Making all in tests
make[4]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2005/tests”
make[4]: 对“all”无需做任何事。
make[4]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2005/tests”
make[4]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2005”
make[4]: 对“all-am”无需做任何事。
make[4]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2005”
make[3]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2005”
Making all in VS2008
make[3]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2008”
Making all in libspeexdsp
make[4]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2008/libspeexdsp”
make[4]: 对“all”无需做任何事。
make[4]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2008/libspeexdsp”
Making all in tests
make[4]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2008/tests”
make[4]: 对“all”无需做任何事。
make[4]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2008/tests”
make[4]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2008”
make[4]: 对“all-am”无需做任何事。
make[4]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2008”
make[3]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2008”
make[3]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32”
make[3]: 对“all-am”无需做任何事。
make[3]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32”
make[2]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32”
Making all in symbian
make[2]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/symbian”
make[2]: 对“all”无需做任何事。
make[2]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/symbian”
Making all in ti
make[2]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/ti”
Making all in speex_C54_test
make[3]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/ti/speex_C54_test”
make[3]: 对“all”无需做任何事。
make[3]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/ti/speex_C54_test”
Making all in speex_C55_test
make[3]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/ti/speex_C55_test”
make[3]: 对“all”无需做任何事。
make[3]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/ti/speex_C55_test”
Making all in speex_C64_test
make[3]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/ti/speex_C64_test”
make[3]: 对“all”无需做任何事。
make[3]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/ti/speex_C64_test”
make[3]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/ti”
make[3]: 对“all-am”无需做任何事。
make[3]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/ti”
make[2]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/ti”
make[2]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1”
make[2]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1”
make[1]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1”
jiajiahao@ubuntu:~/Desktop/speexdsp-SpeexDSP-1.2.1$ make install
Making install in libspeexdsp
make[1]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/libspeexdsp”
make[2]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/libspeexdsp”
 /usr/bin/mkdir -p '/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/build/lib'
 /bin/sh ../libtool   --mode=install /usr/bin/install -c   libspeexdsp.la '/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/build/lib'
libtool: install: /usr/bin/install -c .libs/libspeexdsp.so.1.5.2 /home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/build/lib/libspeexdsp.so.1.5.2
libtool: install: (cd /home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/build/lib && { ln -s -f libspeexdsp.so.1.5.2 libspeexdsp.so.1 || { rm -f libspeexdsp.so.1 && ln -s libspeexdsp.so.1.5.2 libspeexdsp.so.1; }; })
libtool: install: (cd /home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/build/lib && { ln -s -f libspeexdsp.so.1.5.2 libspeexdsp.so || { rm -f libspeexdsp.so && ln -s libspeexdsp.so.1.5.2 libspeexdsp.so; }; })
libtool: install: /usr/bin/install -c .libs/libspeexdsp.lai /home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/build/lib/libspeexdsp.la
libtool: install: /usr/bin/install -c .libs/libspeexdsp.a /home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/build/lib/libspeexdsp.a
libtool: install: chmod 644 /home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/build/lib/libspeexdsp.a
libtool: install: ranlib /home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/build/lib/libspeexdsp.a
libtool: finish: PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/sbin" ldconfig -n /home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/build/lib
----------------------------------------------------------------------
Libraries have been installed in:
   /home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/build/lib

If you ever happen to want to link against installed libraries
in a given directory, LIBDIR, you must either use libtool, and
specify the full pathname of the library, or use the '-LLIBDIR'
flag during linking and do at least one of the following:
   - add LIBDIR to the 'LD_LIBRARY_PATH' environment variable
     during execution
   - add LIBDIR to the 'LD_RUN_PATH' environment variable
     during linking
   - use the '-Wl,-rpath -Wl,LIBDIR' linker flag
   - have your system administrator add LIBDIR to '/etc/ld.so.conf'

See any operating system documentation about shared libraries for
more information, such as the ld(1) and ld.so(8) manual pages.
----------------------------------------------------------------------
make[2]: 对“install-data-am”无需做任何事。
make[2]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/libspeexdsp”
make[1]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/libspeexdsp”
Making install in include
make[1]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/include”
Making install in speex
make[2]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/include/speex”
make[3]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/include/speex”
make[3]: 对“install-exec-am”无需做任何事。
 /usr/bin/mkdir -p '/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/build/include/speex'
 /usr/bin/install -c -m 644 speexdsp_config_types.h '/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/build/include/speex'
 /usr/bin/mkdir -p '/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/build/include/speex'
 /usr/bin/install -c -m 644 speex_echo.h speex_jitter.h speex_preprocess.h speex_resampler.h speexdsp_types.h '/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/build/include/speex'
make[3]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/include/speex”
make[2]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/include/speex”
make[2]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/include”
make[3]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/include”
make[3]: 对“install-exec-am”无需做任何事。
make[3]: 对“install-data-am”无需做任何事。
make[3]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/include”
make[2]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/include”
make[1]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/include”
Making install in doc
make[1]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/doc”
make[2]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/doc”
make[2]: 对“install-exec-am”无需做任何事。
 /usr/bin/mkdir -p '/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/build/share/doc/speexdsp'
 /usr/bin/install -c -m 644 manual.pdf '/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/build/share/doc/speexdsp'
make[2]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/doc”
make[1]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/doc”
Making install in win32
make[1]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32”
Making install in libspeexdsp
make[2]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/libspeexdsp”
make[3]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/libspeexdsp”
make[3]: 对“install-exec-am”无需做任何事。
make[3]: 对“install-data-am”无需做任何事。
make[3]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/libspeexdsp”
make[2]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/libspeexdsp”
Making install in VS2003
make[2]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2003”
Making install in libspeexdsp
make[3]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2003/libspeexdsp”
make[4]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2003/libspeexdsp”
make[4]: 对“install-exec-am”无需做任何事。
make[4]: 对“install-data-am”无需做任何事。
make[4]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2003/libspeexdsp”
make[3]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2003/libspeexdsp”
Making install in tests
make[3]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2003/tests”
make[4]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2003/tests”
make[4]: 对“install-exec-am”无需做任何事。
make[4]: 对“install-data-am”无需做任何事。
make[4]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2003/tests”
make[3]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2003/tests”
make[3]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2003”
make[4]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2003”
make[4]: 对“install-exec-am”无需做任何事。
make[4]: 对“install-data-am”无需做任何事。
make[4]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2003”
make[3]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2003”
make[2]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2003”
Making install in VS2005
make[2]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2005”
Making install in libspeexdsp
make[3]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2005/libspeexdsp”
make[4]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2005/libspeexdsp”
make[4]: 对“install-exec-am”无需做任何事。
make[4]: 对“install-data-am”无需做任何事。
make[4]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2005/libspeexdsp”
make[3]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2005/libspeexdsp”
Making install in tests
make[3]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2005/tests”
make[4]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2005/tests”
make[4]: 对“install-exec-am”无需做任何事。
make[4]: 对“install-data-am”无需做任何事。
make[4]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2005/tests”
make[3]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2005/tests”
make[3]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2005”
make[4]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2005”
make[4]: 对“install-exec-am”无需做任何事。
make[4]: 对“install-data-am”无需做任何事。
make[4]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2005”
make[3]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2005”
make[2]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2005”
Making install in VS2008
make[2]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2008”
Making install in libspeexdsp
make[3]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2008/libspeexdsp”
make[4]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2008/libspeexdsp”
make[4]: 对“install-exec-am”无需做任何事。
make[4]: 对“install-data-am”无需做任何事。
make[4]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2008/libspeexdsp”
make[3]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2008/libspeexdsp”
Making install in tests
make[3]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2008/tests”
make[4]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2008/tests”
make[4]: 对“install-exec-am”无需做任何事。
make[4]: 对“install-data-am”无需做任何事。
make[4]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2008/tests”
make[3]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2008/tests”
make[3]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2008”
make[4]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2008”
make[4]: 对“install-exec-am”无需做任何事。
make[4]: 对“install-data-am”无需做任何事。
make[4]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2008”
make[3]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2008”
make[2]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32/VS2008”
make[2]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32”
make[3]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32”
make[3]: 对“install-exec-am”无需做任何事。
make[3]: 对“install-data-am”无需做任何事。
make[3]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32”
make[2]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32”
make[1]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/win32”
Making install in symbian
make[1]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/symbian”
make[2]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/symbian”
make[2]: 对“install-exec-am”无需做任何事。
make[2]: 对“install-data-am”无需做任何事。
make[2]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/symbian”
make[1]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/symbian”
Making install in ti
make[1]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/ti”
Making install in speex_C54_test
make[2]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/ti/speex_C54_test”
make[3]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/ti/speex_C54_test”
make[3]: 对“install-exec-am”无需做任何事。
make[3]: 对“install-data-am”无需做任何事。
make[3]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/ti/speex_C54_test”
make[2]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/ti/speex_C54_test”
Making install in speex_C55_test
make[2]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/ti/speex_C55_test”
make[3]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/ti/speex_C55_test”
make[3]: 对“install-exec-am”无需做任何事。
make[3]: 对“install-data-am”无需做任何事。
make[3]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/ti/speex_C55_test”
make[2]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/ti/speex_C55_test”
Making install in speex_C64_test
make[2]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/ti/speex_C64_test”
make[3]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/ti/speex_C64_test”
make[3]: 对“install-exec-am”无需做任何事。
make[3]: 对“install-data-am”无需做任何事。
make[3]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/ti/speex_C64_test”
make[2]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/ti/speex_C64_test”
make[2]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/ti”
make[3]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/ti”
make[3]: 对“install-exec-am”无需做任何事。
make[3]: 对“install-data-am”无需做任何事。
make[3]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/ti”
make[2]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/ti”
make[1]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/ti”
make[1]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1”
make[2]: 进入目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1”
make[2]: 对“install-exec-am”无需做任何事。
 /usr/bin/mkdir -p '/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/build/lib/pkgconfig'
 /usr/bin/install -c -m 644 speexdsp.pc '/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/build/lib/pkgconfig'
make[2]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1”
make[1]: 离开目录“/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1”

生成在linux上测试speexdsp功能用的可执行文件

编译生成出在linux上测试speexdsp功能用的可执行文件，目的是为了分析speexdsp在ohos编译体系生成动态链接库后进功能测试的逻辑。

阅读speexdsp用户手册，测试speexdsp功能的源文件分别为：

testdenoise.c
testecho.c
testjitter.c
testresample.c
testresample2.c

它们均位于speexdsp下的libspeexdsp。
需要把它们编译为可运行的执行文件，通过阅读用户手册可以知道在编译时需要添加-lspeexdsp和-lm

以编译testresample可执行文件为例，编译执行语句如下：
在speexdsp目录libspeexdsp目录下打开终端输入如下语句

gcc testjitter.c -L /home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/build/lib -lspeexdsp -o testjitter -I /home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1/include -lm

其中/home/jiajiahao/Desktop/speexdsp-SpeexDSP-1.2.1为笔者放置speexdsp原生库linux下的绝对路径。
链接动态链接库编译可执行文件，gcc后面是测试用的源文件。-L 后指定so库所在的文件夹，-l+so库的名字（出去lib和后缀）。-o 后面是可执行文件的名字，-I 后面是测试用的源文件要用到的头文件所在的地址。

编译出全部测试功能用的可执行文件如下：

啃论文俱乐部——移植speexdsp到OpenHarmony标准系统①

由于想要分享的内容较多，为避免观众姥爷们失去看下去的耐心，分享将以连载的方式进行。

Speexdsp

Speexdsp功能

预处理器

自适应抖动缓冲区

声学回声消除器

重采样器

Speexdsp移植到OpenHarmony标准系统

一、下载源码

二、搭建开发环境，生成Makefile编译构建speexdsp。

在linux上生成speexdsp的so动态链接库和.a静态链接库

生成在linux上测试speexdsp功能用的可执行文件

离北况归

引用和评论

[触觉智能RK3568使用体验]NAPI 类对象导出及其生命周期管理(下)

鸿蒙OpenHarmony【标准系统编写“Hello World”程序】（基于RK3568开发板）

10款好用的开源 HarmonyOS 工具库

飞凌嵌入式受邀亮相OpenHarmony人才生态大会2024

啃论文俱乐部——移植speexdsp到OpenHarmony标准系统①

由于想要分享的内容较多，为避免观众姥爷们失去看下去的耐心，分享将以连载的方式进行。

Speexdsp

Speexdsp功能

预处理器

自适应抖动缓冲区

声学回声消除器

重采样器

Speexdsp移植到OpenHarmony标准系统

一、下载源码

二、搭建开发环境，生成Makefile编译构建speexdsp。

在linux上生成speexdsp的so动态链接库和.a静态链接库

生成在linux上测试speexdsp功能用的可执行文件

离北况归

引用和评论

[触觉智能RK3568使用体验]NAPI 类对象导出及其生命周期管理(下)

鸿蒙OpenHarmony【标准系统 编写“Hello World”程序】（基于RK3568开发板）

10款好用的开源 HarmonyOS 工具库

飞凌嵌入式受邀亮相OpenHarmony人才生态大会2024

鸿蒙OpenHarmony【标准系统编写“Hello World”程序】（基于RK3568开发板）