直接在終端輸入“sudo apt-get install audacious”就能安裝。

MP3播放器

(一)?移植madplay播放器開源軟件，實施步驟：

a)?安裝WM8960聲卡驅動

i.?從ftp/project/獲取聲卡驅動sound_driver.rar

1.?在windows解壓縮，獲取一下文件內容

a)?audio_logo_rhgz_wm.tar.gz，針對于開發板背面標注”融匯廣澤”的聲卡驅動

b)?audio_logo_tarena_wm.tar.gz，針對于開發板背面標注”Tarena”的聲卡驅動

注意：自行選擇適合自己的驅動包，然后在windows下解壓縮，獲取文件：

build.sh?//驅動安裝腳本

s5pv210_wm8960.ko?//wm8960聲卡IO初始化驅動

wm8960.ko?//wm8960聲卡驅動

ii.?創建驅動存放目錄

1.?mkdir??/opt/project/drivers/wm8960

2.?cp?build.sh?/opt/project/drivers/wm8960/

3.?cp?s5pv210_wm8960.ko?/opt/project/drivers/wm8960/

4.?cp?wm8960.ko?/opt/project/drivers/wm8960/

iii.?拷貝驅動到開發板

1.?cp?build.sh?/opt/rootfs/drivers/

2.?cp?s5pv210_wm8960.ko?/opt/rootfs/drivers/

3.?cp?wm8960.ko?/opt/rootfs/drivers/

????增加權限

sudo?chmod?777?/opt?-R

sudo?chown?tarena?/opt?-R?

sudo?chgrp?tarena?/opt?-R?

?

b)?移植libmad解碼底層操作庫(madplay僅僅是libmad的一個應用)

1.?從ftp/project獲取libmad源碼libmad-0.15.1b.tar.gz

2.?創建libmad源碼存放目錄

a)?mkdir??/opt/project/mp3/

b)?cp?libmad-0.15.1b.tar.gz?/opt/project/mp3

c)?cd?/opt/project/mp3

d)?tar?–xvf?libmad-0.15.1b.tar.gz

e)?cd?libmad-0.15.1b

f)??make?clean

g)??./configure?CC=arm-linux-gcc?--host=arm-linux?--prefix=/opt/project/mp3/to_arm?

//指定編譯生成的動態庫的安裝目錄為/opt/project/mp3/to_arm/

?

./configure??--prefix=/opt/project/mp3/to_arm?CC=arm-linux-gcc?--host=arm-linux

h)??make

i)??make?install

j)?查看編譯成果?cd?/opt/project/mp3/to_arm

c)?移植libid3tag開源MP3?TAG庫，它依賴libz庫

i.?先移植libz庫

a)?從ftp/project下載源碼zlib-1.2.3.tar.gz

b)?cp?zlib-1.2.3.tar.gz?/opt/project/mp3

c)?cd?/opt/project/mp3

d)?tar?-xvf?zlib-1.2.3.tar.gz

e)?cd?zlib-1.2.3

f)?make?clean

g)?./configure?--shared?--prefix=/opt/project/mp3/to_arm

h)?vi?Makefile

i)?19?CC=arm-linux-gcc?-shared?-Wl,-soname,libz.so.1??//在第19行

j)?28?LDSHARED=arm-linux-gcc??//在第28行

k)?29?CPP=arm-linux-gcc?-E

l)?36?AR=arm-linux-ar?rc

m)?37?RANLIB=arm-linux-ranlib

n)?保存退出

o)?make

p)?make?install

ii.?再移植libid3tag庫

a)?從ftp/project/獲取源碼libid3tag-0.15.1b.tar.gz

b)?cp?libid3tag-0.15.1b.tar.gz?/opt/project/mp3

c)?cd?/opt/project/mp3/

d)?tar?-xvf?libid3tag-0.15.1b.tar.gz

e)?cd?libid3tag-0.15.1b

f)?./configure?CC=arm-linux-gcc?--host=arm-linux?--prefix=/opt/project/mp3/to_arm

g)?make

h)?make?install

d)?移植madplay播放器

1.?從ftp/project/獲取源碼madplay-0.15.2b.tar.gz

2.?cp?madplay-0.15.2b.tar.gz?/opt/project/mp3/

3.?cd?/opt/project/mp3

4.?tar?-xvf?madplay-0.15.2b.tar.gz

5.?cd?madplay-0.15.2b

6.?./configure?CC=arm-linux-gcc?--host=arm-linux?--prefix=/opt/project/mp3/to_arm?CPPFLAGS=-I/opt/project/mp3/to_arm/include?LDFLAGS=-L/opt/project/mp3/to_arm/lib

7.?make

8.?make?install

e)?開發板測試

1.?拷貝交叉編譯后生成的動態庫和可執行程序到開發板

a)?mkdir?/opt/rootfs/home/mp3

b)?mkdir?/opt/rootfs/home/mp3/song

c)?cp /opt/project/mp3/to_arm/lib?/opt/project/mp3/to_arm/bin/??/opt/rootfs/home/mp3?–frd

d)?cp?shanghaitan.mp3?/opt/rootfs/home/mp3/song?//拷貝歌曲到開發板

e)?vim?/opt/rootfs/etc/profile?文件最后添加動態庫的環境變量

export?LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/home/mp3/lib

2.?開發板執行

?insmod?/drivers/wm8960.ko?

?insmod?/drivers/s5pv210_wm8960.ko?

/home/mp3/bin/madplay??/home/mp3/song/love.mp3

?

?

f)?熟悉madplay參數的使用

i.?–r //重復執行

1.?/home/mp3/bin/madplay??-r?/home/mp3/song/*.mp3?//重復播放所有的歌曲

ii.?按鍵盤的“-”減號降低音量

iii.?按鍵盤的”+”加號升高音量

iv.?按鍵盤的”s”停止播放

v.?按鍵盤的”c”繼續播放

vi.?按鍵盤的”>”下一首

vii.?按鍵盤的”f”上一首

?

g)?改造madplay源碼支持網絡控制播放器的操作

vi?player.c?

?添加頭文件

#include?<sys/socket.h>

#include?<netinet/in.h>

#include?<arpa/inet.h>

?

i.?cd?/opt/project/mp3/?madplay-0.15.2b

ii.?vim?player.c?+120?定義udp套接字文件描述符

1.?static?int?socketfd?=?-1;

保存退出

?

iii.?vim?player.c?//找到setup_tty函數，在函數開頭添加以下代碼：

/*?創建?server端*/

??socketfd?=?socket(PF_INET,SOCK_DGRAM,0);

??if(socketfd<0){perror("socket");return?-1;}

??struct?sockaddr_in?si;

??si.sin_family?=?AF_INET;

??si.sin_port?=?htons(2000);

??si.sin_addr.s_addr?=?INADDR_ANY;

??if(bind(socketfd,(struct?sockaddr*)&si,?sizeof(si))<0){

??????????perror("bind");return?-1;

??}

保存退出

?

iv.?vim?player.c?找到tty_filter函數

struct?player?*player?=?data;

enum?mad_flow?flow?=?MAD_FLOW_CONTINUE;

int?command?=?0,?stopped?=?0;

//command?=?readkey(0);??//注釋掉詞句，不再響應按鍵操作

//并且在后面添加網絡控制支持代碼，如下：

//獲取網絡數據

recvfrom(socketfd,?&command,?4,?MSG_DONTWAIT,?NULL,?0);

保存退出

?

?

v.?重新編譯maplay

1.?make?clean

2.?make

3.?make?install

4.?cp?/opt/project/mp3/madplay-0.15.2b/madplay?/opt/rootfs/home/mp3/bin/

vi.?編寫mp3播放操作庫函數

1.?從ftp/project/下載參考代碼mp3_hwlib.tar.bz2

a)?Mp3.h?//聲明

b)?Mp3.c?//定義

c)?Mp3lib_test.c?//調用測試

?

?

??3.3.制作動態庫

???? arm-linux-gcc?-shared?-fpic?-o?libmp3.so?mp3.c

arm-linux-gcc?-shared?-fpic?-o?libclient.so?client.c

????3.4.交叉編譯測試用例

????????arm-linux-gcc?-o?mp3lib_test?mp3lib_test.c?-L.?-lmp3

?

創建動態庫和測試用例的存放目錄

cp?libmp3.so?/opt/rootfs/home/applib

cp?libclient.so?/opt/rootfs/home/applib

????????cp?mp3lib_test?/opt/rootfs/home/apptest

?

?4.開發板進行測試:測試硬件，測試驅動，測試動態庫?????

?????vim?/opt/rootfs/etc/profile?最近最后添加動態庫的支持：

?????export?LD_LIBRARY_PATH=/home/applib:$LD_LIBRARY_PATH

?

?重啟開發板

?????開發板上執行：

?insmod?/drivers/wm8960.ko?

?insmod?/drivers/s5pv210_wm8960.ko?

/home/mp3/bin/madpaly?-r?/home/mp3/song/love.mp3

?

?

vii.?編寫QT前端播放器界面

a)?從ftp/project/下載參考代碼mp3_qt.tar.bz2

??

?5.7.1.生成工程文件

???? cd?/opt/project/ehome/mp3

???? /opt/project/qt/bin/qmake?-project

????

????5.7.2.打開ehome的工程文件

?????vim?/opt/project/mp3.pro添加如下語句：

????? INCLUDEPATH?+=?/opt/project/hwlib/mp3

LIBS?+=?-L/opt/project/hwlib/mp3?-lmp3

5.7.3.生成Makefile

??/opt/project/qt/bin/qmake

5.7.4.編譯mp3

???????make

5.7.5.創建QT圖形界面的存放目錄

??????mkdir?/opt/rootfs/home/appbin

??????cp?mp3?/opt/rootfs/home/appbin

5.7.6.開發板上測試：

?????????????????????????insmod?drivers/wm8960.ko?//加載驅動

insmod?drivers/s5pv210_wm8960.ko?

????/home/appbin/mp3?-qws????

?

?

?

?

?

總結

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