嵌入式Linux下MP4视频录制库MP4V2移植和简介

时间:2022-09-19 18:39:32

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作者:EasyWave                                                                             时间:2014.10.31

类别:Linux应用-MP4视频录制库MP4V2移植心得和简介            声明:转载,请保留链接

注意:如有错误,欢迎指正。这些是我学习的日志文章......

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一:MP4V2库简介

      MP4V2的前身是MPEG4IP开源项目中的一个功能库,但是现在MPEG4IP已经不在更新了。但是MP4V2还在更新,并且独立出来了。MP4V2主要是作为MP4文件的录制一个开源库,如下所示:

嵌入式Linux下MP4视频录制库MP4V2移植和简介

         MPEG4IP提供一个端对端的系统来实现音视频流的传输,支持包括MPEG4/H.261/MPEG2/H.263 MP3/AAC/AMR等不同编码格式。现在关于Google相关的code.google.com已经无法打开了,因此只好提供下面的下载地址,如下所示:https://launchpad.net/ubuntu/+source/mp4v2

嵌入式Linux下MP4视频录制库MP4V2移植和简介


二:MP4V2的编译

      在Linux下编译MP4V2,首先需要配置哪些选项,我们可以通过configure来看看,执行./configure --help就可以了,如下所示:

/work/PRJ/mp4v2/mp4v2-2.0.0$ ./configure --help
`configure' configures MP4v2 2.0.0 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]
--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/mp4v2]
--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]
--disable-debug disable debugging compilation
--disable-optimize disable optimizing compilation
--disable-fvisibility disable use of -fvisibility
--disable-gch disable GCC precompiled-headers
--disable-largefile disable LFS (large file support)
--disable-util disable build of command-line utilities
--enable-bi=ARCH enable -mARCH for bi-arch compilation
--enable-ub[=ARCHS] enable -arch ARCH for universal-binaries (OSX only)
--enable-cygwin-win32 when building with Cygwin use -mwin32
--enable-mingw-threads when building with MinGW use -mthreads
--disable-dependency-tracking speeds up one-time build
--enable-dependency-tracking do not reject slow dependency extractors
--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]
--disable-libtool-lock avoid locking (might break parallel builds)

Optional Packages:
--with-PACKAGE[=ARG] use PACKAGE [ARG=yes]
--without-PACKAGE do not use PACKAGE (same as --with-PACKAGE=no)
--with-pic try to use only PIC/non-PIC objects [default=use
both]
--with-gnu-ld assume the C compiler uses GNU ld [default=no]

Some influential environment variables:
CXX C++ compiler command
CXXFLAGS 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>
CC C compiler command
CFLAGS C compiler flags
CPP C preprocessor
CXXCPP C++ preprocessor

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 <kidjan@gmail.com>.
         有太多的选项,应该怎么选呢,我这里提供了一个build.sh脚本,请按着里面的配置来做就好了,不过需要注意的是:--disable-optimize,如果使能--enable-optimize之后,mp4v2编译出来的库会少很多,否则mp4v2库就会比较大一些,具体的取舍就看自己去觉得啦,这里就不扯这个啦。build.sh脚本文件如下所示:

嵌入式Linux下MP4视频录制库MP4V2移植和简介

       只要运行./build.sh脚本之后会自动去编译和安装,编译成功之后,会在_install目录中生成如下的文件夹,如下所示:

嵌入式Linux下MP4视频录制库MP4V2移植和简介

       看看lib目录下是否有mp4v2的库,如下所示:

嵌入式Linux下MP4视频录制库MP4V2移植和简介

       想要知道如何使用这个库,可以参考util目录下的应用代码,如下所示:

嵌入式Linux下MP4视频录制库MP4V2移植和简介

      具体的应用就需要自己的去看啦,后续会将其用到一个实际的项目当中去。这里就不详细介绍如何使用啦。


1、下载mp4v2的源代码(http://code.google.com/p/mp4v2/downloads/list)mp4v2-2.0.0.tar.bz2

2.  进入相应目录

      ./configure --prefix=/usr/local/mytools/mp4v2-2.0.0/install --host=arm-arago-linux-gnueabi  CC=arm-arago-linux-gnueabi-gcc CXX=arm-arago-linux-gnueabi-g++ 

3.   make

4.   make install

-------------------------------------------------------------------------------------------------

库文件过大,优化相关选项

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]
  --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/mp4v2]
  --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]
  --disable-debug         disable debugging compilation
  --disable-optimize      disable optimizing compilation
  --disable-fvisibility   disable use of -fvisibility
  --disable-gch           disable GCC precompiled-headers
  --disable-largefile     disable LFS (large file support)
  --disable-util          disable build of command-line utilities
  --enable-bi=ARCH        enable -mARCH for bi-arch compilation
  --enable-ub[=ARCHS]     enable -arch ARCH for universal-binaries (OSX only)
  --enable-cygwin-win32   when building with Cygwin use -mwin32
  --enable-mingw-threads  when building with MinGW use -mthreads
  --disable-dependency-tracking  speeds up one-time build
  --enable-dependency-tracking   do not reject slow dependency extractors
  --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]
  --disable-libtool-lock  avoid locking (might break parallel builds)


Optional Packages:
  --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
  --without-PACKAGE       do not use PACKAGE (same as --with-PACKAGE=no)
  --with-pic              try to use only PIC/non-PIC objects [default=use
                          both]
  --with-gnu-ld           assume the C compiler uses GNU ld [default=no]


Some influential environment variables:
  CXX         C++ compiler command
  CXXFLAGS    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>
  CC          C compiler command
  CFLAGS      C compiler flags
  CPP         C preprocessor
  CXXCPP      C++ preprocessor


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

cmd:

--disable-option-checking  
  

  --disable-debug       
  --disable-optimize     
  --disable-fvisibility  
  --disable-gch           
  --disable-largefile     
  --disable-util         
 
  --disable-dependency-tracking 
 
  --disable-libtool-lock