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      Mplayer 移植
      時間:2017-01-05作者:華清遠見

      關于mplayer移植網上資料很多,但都很混亂。在此,我做了一個關于mplayer 的詳細總結。在做之前好在解壓源碼包后,先通過./configure --help看一下相關配置。

      X86的LINUX上已經自帶了解碼庫,不需要另外安裝解碼庫,而arm平臺自己做的文件系統沒有解碼庫,需要另外安裝解碼庫。

      下載MPlayer:MPlayer-1.0rc2.tar.bz2
              解碼庫:libmad-0.15.0b.tar.gz

      一、在x86的LINUX上安裝mplayer

      1 #./configure (./configure    --enable-gui    –-enable-live    –-language=zh )
              2 #make
              3 #make install

      此時在MPlayer-1.0rc2目錄下會生成可執行文件mplayer.
              把它拷貝到/bin/目錄下。要執行時:
              #/bin/mpalyer /路徑/要播放的媒體文件名;
              #/bin/mplayer a.mp3

      二、移植mplayer到arm平臺的LINUX上(使用4.3.2編譯器)

      1 配置安裝libmad

      (如果不先配置安裝libmad,則在make mplayer時出現找不到mad.h 錯誤)
              echo PATH=/usr/local/arm/3.3.2/bin:$PATH

      (1)#./configure --enable-fpm=arm --host=arm-none-linux-gnueabi --disable-shared --disable-debugging        --prefix=/usr/local/arm/3.3.2/lib CC=arm-none-linux-gnueabi-gcc

      參數解析:
              --enable-fpm=arm 
              --host=arm-none-linux-gnueabi
              --disable-shared 
              --disable-debugging 
              --prefix=/home/linux/libmad(make install 安裝路徑)
              CC=arm-none-linux-gnueabi-gcc(4.3.2的交叉編譯工具鏈)

      (2)#make

      注意如果出現error:unrecognized command line option "-fforce-mem"錯誤,需要修改makefile,去掉--fforce-mem標志(因為arm-eabi編譯器都不支持這個選項)

      (3)#make install

      此時會在/home/linux目錄下生成include目錄和lib目錄。
              其中liclude目錄下有文件 mad.h
              lib 目錄有文件 libmad.a libmad.la

      2 配置安裝mplayer

      (1)#./configure    --host-cc=gcc    --cc=arm-none-linux-gnueabi-gcc    --target=arm-linux    --enable-static    --enable-ossaudio    --prefix=/tmp/mplayer-rc2     --disable-win32dll    --disable-dvdread    --enable-fbdev    --disable-mencoder    --disable-live --disable-mp3lib --enable-mad --enable-libavcodec_a    --disable-armv5te    --disable-armv6    --disable-dvdnav    --disable-dvdread    --disable-dvdread-internal        with-extraincdir=/usr/local/arm/3.3.2/lib/include        --with-extralibdir=/usr/local/arm/3.3.2/lib/lib

      參數解析:
              --host-cc=gcc         # C compiler for tools needed while building [gcc]
              --cc=arm-none-linux-gnueabi-gcc        #C compiler to build MPlayer [gcc]
              --target=arm-linux        #target platform (i386-linux, arm-linux, etc)
              --enable-static        #build a statically linked binary
              --enable-ossaudio        #enable OSS audio output [autodetect]
              --prefix=/tmp/mplayer-rc2        #prefix directory for installation [/usr/local]
              --disable-win32dll         # disable Win32 DLL support [enabled]
              --disable-dvdread        #disable libdvdread [autodetect]
              --enable-fbdev        #enable FBDev video output [autodetect]
              --disable-mencoder        #disable MEncoder (A/V encoder) compilation [enable] 使能編碼器編輯
              --disable-live        #disable LIVE555 Streaming Media [autodetect] 讓Mpalyer不支持流媒體協議
              --disable-mp3lib        # disable builtin mp3lib [enabled]
              --enable-mad        #disable libmad (MPEG audio) support [autodetect]
              --enable-libavcodec_a        #disable static libavcodec [autodetect]
              --disable-armv5te        #disable DSP extensions (ARM) [autodetect]
              --disable-armv6        #disable ARMv6 (ARM) [autodetect]
              --with-extraincdir=/usr/local/arm/3.3.2/lib/include        #指明mad.h文件所在路徑
              --with-extralibdir=/usr/local/arm/3.3.2/lib/lib        #指明limad相關鏈接庫所在路徑

      (2)#make

      其中可能會遇到如下問題:

      1.Error:motion_comp_arm_s.S

      在libmpeg2/motion_comp_arm_s.S文件的前面加上如下的內容:

      #ifndef HAVE_PLD
              .macro pld reg
              .endm
              #endif

      2.vo_ivtv.c:79: error: storage size of ’sd’ isn’t known

      vo_ivtv.c:80: error: storage size of ’sd1′ isn’t known

      添加--disable-ivtv

      3. undefined reference to `video_out_ivtv'

      在文件 file libvo/video_out.c, 找到
              #ifdef HAVE_DXR2
              extern vo_functions_t video_out_dxr2;
              #endif
              extern vo_functions_t video_out_dxr3; 
              #ifdef HAVE_IVTV
              extern vo_functions_t video_out_ivtv;
              #endif 
              edit it like this:
              #ifdef HAVE_DXR2
              extern vo_functions_t video_out_dxr2;
              #endif
              #ifdef HAVE_DXR3    //這一句是要添加的
              extern vo_functions_t video_out_dxr3; 
              #endif    //這句是要添加的
              #ifdef HAVE_IVTV
              extern vo_functions_t video_out_ivtv;
              #endif

      使用arm-linux-gcc 3.3.2編譯mplayer可能會出現in.h頭文件錯誤如下:

      /usr/local/arm/3.3.2/include/netinet/in.h:259: parse error before '(' token
              /usr/local/arm/3.3.2/include/netinet/in.h:259: parse error before "__u32"
              /usr/local/arm/3.3.2/include/netinet/in.h:260: parse error before '(' token
              /usr/local/arm/3.3.2/include/netinet/in.h:260: parse error before "__u16"
              /usr/local/arm/3.3.2/include/netinet/in.h:262: parse error before '(' token
              /usr/local/arm/3.3.2/include/netinet/in.h:262: parse error before "__u32"

      需要修改一下/usr/local/arm/3.3.2/include/netinet/in.h中,在 __BEGIN_DECLS 后面增加下述文字

      #undef ntohl
              #undef ntohs
              #undef htonl
              #undef htons

      (3) make install(出現提示不認識的文件。因為是ARM平臺運行的文件,所有不認識)

      install -m 755 -s mplayer /tmp/mplayer-rc2/bin
              strip: Unable to recognise the format of the input file `/tmp/mplayer-rc2/bin/mplayer'
              此時在MPlayer-1.0rc2目錄下會生成可執行文件mplayer.
              把它拷貝到/bin/目錄下。

      要執行時:

      #/bin/mpalyer /路徑/要播放的媒體文件名;
              #/bin/mplayer -ac mad a.mp3

      三、MPlayer slave命令

      在命令中添加 -slave 和 -quiet就可以通過命令設置Mplayer實現相應的功能。在mplayer源碼中的,/DOCS/tech/slave.txt中對這些命令有詳細的解析。

      Mplayer相關文章:

      Qt編寫Mplayer前端程序

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