lua移植到MTK平台小结 - 云计算? - ITeye博客

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lua移植到MTK平台小结

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<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <meta name="ProgId" content="Word.Document"> <meta name="Generator" content="Microsoft Word 12"> <meta name="Originator" content="Microsoft Word 12"> <link rel="File-List" href="file:///C:%5CDOCUME%7E1%5CADMINI%7E1%5CLOCALS%7E1%5CTemp%5Cmsohtmlclip1%5C01%5Cclip_filelist.xml"> <link rel="themeData" href="file:///C:%5CDOCUME%7E1%5CADMINI%7E1%5CLOCALS%7E1%5CTemp%5Cmsohtmlclip1%5C01%5Cclip_themedata.thmx"> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <meta name="ProgId" content="Word.Document"> <meta name="Generator" content="Microsoft Word 12"> <meta name="Originator" content="Microsoft Word 12"> <link rel="File-List" href="file:///C:%5CDOCUME%7E1%5CADMINI%7E1%5CLOCALS%7E1%5CTemp%5Cmsohtmlclip1%5C01%5Cclip_filelist.xml"> <link rel="themeData" href="file:///C:%5CDOCUME%7E1%5CADMINI%7E1%5CLOCALS%7E1%5CTemp%5Cmsohtmlclip1%5C01%5Cclip_themedata.thmx"> <link rel="colorSchemeMapping" href="file:///C:%5CDOCUME%7E1%5CADMINI%7E1%5CLOCALS%7E1%5CTemp%5Cmsohtmlclip1%5C01%5Cclip_colorschememapping.xml"> <smallfrac m:val="off"><dispdef><lmargin m:val="0"><rmargin m:val="0"><defjc m:val="centerGroup"><wrapindent m:val="1440"><intlim m:val="subSup"><narylim m:val="undOvr"></narylim></intlim></wrapindent><style>  </style> <p class="MsoNormal" style="text-indent: 21pt;"><span lang="EN-US">lua</span><span style="font-family: 宋体;">内核使用</span><span lang="EN-US">C</span><span style="font-family: 宋体;">语言，所使用的函数也只有标准</span><span lang="EN-US">C</span><span style="font-family: 宋体;">，并且没有全局变量。对于大部分操作系统来说，移植所要做的事情很少。而移植到</span><span lang="EN-US">MTK</span><span style="font-family: 宋体;">平台则要注意以下几点：</span></p> <p class="MsoNormal" style="text-indent: 21pt;"><span lang="EN-US"><p></p></span></p> <p class="MsoListParagraph" style="margin-left: 18pt; text-indent: -18pt;"><span style="" lang="EN-US"><span style="">1．<span style='font-family: "Times New Roman"; font-style: normal; font-variant: normal; font-weight: normal; font-size: 7pt; line-height: normal; font-size-adjust: none; font-stretch: normal;'> </span></span></span><span style="font-family: 宋体;">内存分配。</span></p> <p class="MsoNormal" style="text-indent: 18pt;"><span lang="EN-US">Lua</span><span style="font-family: 宋体;">使用</span><span lang="EN-US">malloc</span><span style="font-family: 宋体;">、</span><span lang="EN-US">realloc</span><span style="font-family: 宋体;">、</span><span lang="EN-US">calloc</span><span style="font-family: 宋体;">等函数来分配内存，而</span><span lang="EN-US">MTK</span><span style="font-family: 宋体;">平台下不能使用这些函数，而是使用</span><span lang="EN-US">OslMalloc</span><span style="font-family: 宋体;">等函数代替之。其它的分配内存函数包括以下：</span></p> <p class="MsoNormal" style="text-indent: 18pt;"><span lang="EN-US">#define media_get_ext_buffer(src_mod_id, buffer_p, buffer_size)/ </span></p> <p class="MsoNormal" style="text-indent: 18pt;"><span lang="EN-US">media_get_ext_buffer_ext(src_mod_id,buffer_p, buffer_size,__FILE__,__LINE__) </span></p> <p class="MsoNormal" style="text-indent: 18pt;"><span lang="EN-US">#define media_get_int_buffer(src_mod_id, buffer_p, buffer_size)/ </span></p> <p class="MsoNormal" style="text-indent: 18pt;"><span lang="EN-US">media_get_int_buffer_ext(src_mod_id,buffer_p,buffer_size,__FILE__,__LINE__) </span></p> <p class="MsoNormal" style="text-indent: 18pt;"><span lang="EN-US">#define media_free_int_buffer(src_mod_id, buffer_p)/ </span></p> <p class="MsoNormal" style="text-indent: 18pt;"><span lang="EN-US">media_free_int_buffer_ext(src_mod_id, buffer_p, __FILE__, __LINE__) </span></p> <p class="MsoNormal" style="text-indent: 18pt;"><span lang="EN-US">#define media_free_ext_buffer(src_mod_id, buffer_p)/ </span></p> <p class="MsoNormal" style="text-indent: 18pt;"><span lang="EN-US">media_free_ext_buffer_ext(src_mod_id, buffer_p, __FILE__, __LINE__)</span></p> <p class="MsoNormal" style="text-indent: 18pt;"><span lang="EN-US">mmi_frm_scrmem_alloc()</span></p> <p class="MsoNormal" style="text-indent: 18pt;"><span lang="EN-US"><p></p></span></p> <p class="MsoListParagraph" style="margin-left: 18pt; text-indent: -18pt;"><span style="" lang="EN-US"><span style="">2．<span style='font-family: "Times New Roman"; font-style: normal; font-variant: normal; font-weight: normal; font-size: 7pt; line-height: normal; font-size-adjust: none; font-stretch: normal;'> </span></span></span><span style="font-family: 宋体;">文件操作。</span></p> <p class="MsoListParagraph" style="margin-left: 18pt; text-indent: 0cm;"><span lang="EN-US">fopne</span><span style="font-family: 宋体;">、</span><span lang="EN-US">fread</span><span style="font-family: 宋体;">、</span><span lang="EN-US">fwrite</span><span style="font-family: 宋体;">、</span><span lang="EN-US">fclose</span><span style="font-family: 宋体;">等函数也不要使用，用</span><span lang="EN-US">FS_Open</span><span style="font-family: 宋体;">、</span><span lang="EN-US">FS_Close</span><span style="font-family: 宋体;">、</span><span lang="EN-US">FS_Read</span><span style="font-family: 宋体;">、</span><span lang="EN-US">FS_Write</span><span style="font-family: 宋体;">等函数代替之。</span></p> <p class="MsoListParagraph" style="margin-left: 18pt; text-indent: -18pt;"><span style="" lang="EN-US"><span style="">3．<span style='font-family: "Times New Roman"; font-style: normal; font-variant: normal; font-weight: normal; font-size: 7pt; line-height: normal; font-size-adjust: none; font-stretch: normal;'> </span></span></span><span style="font-family: 宋体;">消息（事件）传递。</span></p> <p class="MsoListParagraph" style="margin-left: 18pt; text-indent: 0cm;"><span style="font-family: 宋体;">手机上的消息要传给</span><span lang="EN-US">lua</span><span style="font-family: 宋体;">，包括按键消息、</span><span lang="EN-US">timer</span><span style="font-family: 宋体;">消息、</span><span lang="EN-US">socket</span><span style="font-family: 宋体;">消息。</span></p> <p class="MsoListParagraph" style="margin-left: 18pt; text-indent: 0cm;"><span lang="EN-US"><p></p> <div class="highlighter"><ol class="highlighter-cpp" start="1"> <li> <span class="datatypes">int</span><span>(*func)(</span><span class="keyword">void</span><span>*pthis,</span><span class="datatypes">int</span><span>evtType,</span><span class="datatypes">UINT32</span><span>param1,</span><span class="datatypes">UINT32</span><span>param2);</span> </li> <li class="alt"><span></span></li> <li><span>lua_State*L;</span></li> <li class="alt"><span></span></li> <li> <span></span><span class="keyword">void</span><span>Key1DownHandler()</span> </li> <li class="alt"><span>{</span></li> <li><span>func(L,KEY_DOWN,KEY1,0);</span></li> <li class="alt"><span>}</span></li> <li> <span></span><span class="keyword">void</span><span>Key2DownHandler()</span> </li> <li class="alt"><span>{</span></li> <li><span>func(L,KEY_DOWN,KEY2,0);</span></li> <li class="alt"><span>}</span></li> <li> <span></span><span class="keyword">void</span><span>Key3DownHandler()</span> </li> <li class="alt"><span>{</span></li> <li><span></span></li> <li class="alt"><span>func(L,KEY_DOWN,KEY3,0);</span></li> <li><span>}</span></li> <li class="alt"><span>...................</span></li> <li><span></span></li> <li class="alt"> <span></span><span class="keyword">void</span><span>KeyRSKDownHandler()</span> </li> <li><span>{</span></li> <li class="alt"><span>func(L,KEY_DOWN,KEY_RSK,0);</span></li> <li><span>}</span></li> <li class="alt"> <span></span><span class="keyword">void</span><span>KeyRSKUpHandler()</span> </li> <li><span>{</span></li> <li class="alt"><span>func(L,KEY_UP,KEY_RSK,0);</span></li> <li><span>}</span></li> <li class="alt"><span></span></li> <li><span></span></li> <li class="alt"> <span></span><span class="keyword">typedef</span><span></span><span class="keyword">struct</span><span>mtk_key_event</span> </li> <li><span>{</span></li> <li class="alt"> <span></span><span class="keyword">void</span><span>(*f)();</span> </li> <li> <span></span><span class="datatypes">int</span><span>event;</span> </li> <li class="alt"> <span></span><span class="datatypes">int</span><span>eventType;</span> </li> <li><span>}mtk_key_event;</span></li> <li class="alt"><span></span></li> <li> <span></span><span class="keyword">const</span><span>mtk_key_eventeventHandlerS[]=</span> </li> <li class="alt"><span>{</span></li> <li><span>{Key1DownHandler,KEY_1,KEY_EVENT_DOWN},</span></li> <li class="alt"><span>{Key2DownHandler,KEY_2,KEY_EVENT_DOWN},</span></li> <li><span>{Key2DownHandler,KEY_2,KEY_EVENT_DOWN},</span></li> <li class="alt"><span></span></li> <li><span>...................</span></li> <li class="alt"><span></span></li> <li><span>{KeyRSKDownHandler,KEY_RSK,KEY_EVENT_DOWN},</span></li> <li class="alt"><span>{KeyRSKUpHandler,KEY_RSK,KEY_EVENT_UP},</span></li> <li><span>};</span></li> <li class="alt"><span></span></li> <li> <span></span><span class="keyword">void</span><span>lua_set_key_handler(</span><span class="keyword">void</span><span>)</span> </li> <li class="alt"><span>{</span></li> <li> <span></span><span class="keyword">for</span><span>(i=0;i<</span><span class="keyword">sizeof</span><span>(eventHandlerS)/</span><span class="keyword">sizeof</span><span>(eventHandlerS[0]);i++)</span> </li> <li class="alt"><span>{</span></li> <li> <span></span><span class="comment">//TODO:ClearKeyHandler</span><span></span> </li> <li class="alt"><span>}</span></li> <li> <span></span><span class="keyword">for</span><span>(i=0;i<</span><span class="keyword">sizeof</span><span>(eventHandlerS)/</span><span class="keyword">sizeof</span><span>(eventHandlerS[0]);i++)</span> </li> <li class="alt"><span>{</span></li> <li><span>SetKeyHandler(eventHandlerS[i].f,eventHandlerS[i].event,eventHandlerS[i].eventType);</span></li> <li class="alt"><span>}</span></li> <li><span>}</span></li> <li class="alt"><span></span></li> <li> <span></span><span class="datatypes">int</span><span>my_event_handler(</span><span class="keyword">void</span><span>*pthis,</span><span class="datatypes">int</span><span>evtType,</span><span class="datatypes">UINT32</span><span>param1,</span><span class="datatypes">UINT32</span><span>param2)</span> </li> <li class="alt"><span>{</span></li> <li> <span></span><span class="datatypes">int</span><span>ret=0;</span> </li> <li class="alt"> <span></span><span class="keyword">switch</span><span>(evtType)</span> </li> <li><span>{</span></li> <li class="alt"> <span></span><span class="keyword">case</span><span>KEY_DOWN:</span> </li> <li><span>{</span></li> <li class="alt"> <span></span><span class="keyword">return</span><span>lua_event_handler(L,evtType,param1,param2);</span> </li> <li><span>}</span></li> <li class="alt"><span></span></li> <li> <span></span><span class="keyword">case</span><span>INIT:</span> </li> <li class="alt"><span>{</span></li> <li><span>L=lua_open();</span></li> <li class="alt"><span>luaL_openlibs(L);</span></li> <li><span></span></li> <li class="alt"> <span>my_openlibs(L);</span><span class="comment">//注册C函数</span><span></span> </li> <li><span></span></li> <li class="alt"> <span>luaL_dofile(L,(</span><span class="datatypes">char</span><span>*)param1);</span> </li> <li><span></span></li> <li class="alt"><span>lua_event_handler(L,evtType,param1,param2);</span></li> <li><span>}</span></li> <li class="alt"> <span></span><span class="comment">//TODO:otherevent</span><span></span> </li> <li><span>}</span></li> <li class="alt"> <span></span><span class="keyword">return</span><span>1;</span> </li> <li><span>}</span></li> <li class="alt"><span></span></li> <li><span></span></li> <li class="alt"> <span>unsigned</span><span class="datatypes">int</span><span>lua_event_handler(lua_State*L,</span><span class="datatypes">int</span><span>evtType,</span><span class="datatypes">UINT32</span><span>param1,</span><span class="datatypes">UINT32</span><span>param2)</span> </li> <li><span>{</span></li> <li class="alt"> <span>unsigned</span><span class="datatypes">int</span><span>ret=0;</span> </li> <li><span></span></li> <li class="alt"> <span>lua_getglobal(L,</span><span class="string">"main"</span><span>);</span> </li> <li><span>lua_pushnumber(L,evtType);</span></li> <li class="alt"><span>lua_pushnumber(L,param1);</span></li> <li><span>lua_pushnumber(L,param2);</span></li> <li class="alt"><span></span></li> <li> <span></span><span class="keyword">if</span><span>(lua_pcall(L,3,1,0)!=0)</span> </li> <li class="alt"><span>{</span></li> <li> <span></span><span class="keyword">const</span><span></span><span class="datatypes">char</span><span>*str;</span> </li> <li class="alt"><span>lua_pop(L,1);</span></li> <li><span>str=lua_tostring(L,0);</span></li> <li class="alt"><span>ret=ret;</span></li> <li><span>}</span></li> <li class="alt"><span></span></li> <li> <span>ret=(unsigned</span><span class="datatypes">int</span><span>)lua_tonumber(L,-1);</span> </li> <li class="alt"><span>lua_pop(L,1);</span></li> <li> <span></span><span class="keyword">return</span><span>ret;</span> </li> <li class="alt"><span>}</span></li> <li><span></span></li> </ol></div></span></p> <p class="MsoNormal"><span lang="EN-US">4</span><span style="font-family: 宋体;">。初始化以及退出</span></p> <p class="MsoNormal"><span style="font-family: 宋体;"><div class="highlighter"><ol class="highlighter-cpp" start="1"> <li><span></span></li> <li class="alt"> <span></span><span class="datatypes">int</span><span>init()</span> </li> <li><span>{</span></li> <li class="alt"> <span></span><span class="comment">//TODO:allocatememory</span><span></span> </li> <li> <span></span><span class="comment">//TODO:entrynewscreen</span><span></span> </li> <li class="alt"><span>func=my_event_handler;</span></li> <li><span>lua_set_key_handler();</span></li> <li class="alt"><span>func(0,INIT,0,0);</span></li> <li><span>}</span></li> <li class="alt"><span></span></li> <li> <span></span><span class="datatypes">int</span><span>fini()</span> </li> <li class="alt"><span>{</span></li> <li> <span></span><span class="comment">//TODO:freememory</span><span></span> </li> <li class="alt"> <span></span><span class="comment">//TODO:exitscreen</span><span></span> </li> <li><span>}</span></li> <li class="alt"><span></span></li> </ol></div> <br></span></p> <style><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><meta name="ProgId" content="Word.Document"><meta name="Generator" content="Microsoft Word 12"><meta name="Originator" content="Microsoft Word 12"><link rel="File-List" href="file:///C:%5CDOCUME%7E1%5CADMINI%7E1%5CLOCALS%7E1%5CTemp%5Cmsohtmlclip1%5C01%5Cclip_filelist.xml"><link rel="themeData" href="file:///C:%5CDOCUME%7E1%5CADMINI%7E1%5CLOCALS%7E1%5CTemp%5Cmsohtmlclip1%5C01%5Cclip_themedata.thmx"><link rel="colorSchemeMapping" href="file:///C:%5CDOCUME%7E1%5CADMINI%7E1%5CLOCALS%7E1%5CTemp%5Cmsohtmlclip1%5C01%5Cclip_colorschememapping.xml"><style>  </style> </defjc></rmargin></lmargin></dispdef></smallfrac>

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