【正文】 基于 ARM 的 Mplayer 播放器的移植 摘 要 目前市場上媒體播放器款式層出不窮。從原先只能用于欣賞音樂的 MP3，至今已經(jīng)發(fā)展成能夠播放多種視頻，音頻格式的 MP4， MP5 等多功能媒體播放器。嵌入式系統(tǒng)的官方定義是 以應(yīng)用為中心、軟件硬件可裁剪的、適應(yīng)應(yīng)用系統(tǒng)對功能、可靠性、成本、體積、功耗等嚴(yán)格綜合性要求的專用計(jì)算機(jī)系統(tǒng) 。其硬件以一個(gè)高性能的處理器（通常是 32 位處理器）為基礎(chǔ)，軟件以一個(gè)多任務(wù)操作系統(tǒng)為基礎(chǔ)，非常適合完成 MPlayer 移植相關(guān)任務(wù)。本次畢業(yè)設(shè)計(jì)任務(wù)就是以 Linux 嵌入式開發(fā)為主線，利 用 X86PC 機(jī)與 ARM2410s 嵌入式平臺開發(fā)多種播放格式的 MPlayer。 本系統(tǒng)首先完成 X86PC 機(jī) Linux 環(huán)境下 MPlayer 的實(shí)現(xiàn)，之后通過 QT 制作MPlayer GUI，完成 MPlayer 向 ARM2410s 嵌入式平臺的移植和調(diào)試工作。并且通過研究多種視頻的文件格式，使 MPlayer 能夠播放多種視頻格式。該畢業(yè)設(shè)計(jì)完成了任務(wù)書的要求。 關(guān)鍵詞 :嵌入式； Linux； MPlayer；視頻格式； QT ABSTRACT The present market has been seeing various designs of media players emerging one after another. Originating from MP3 which can only serves for appreciating music, the multifunctional media players nowadays have been developed into MP4 and MP5, which can display many video and audio formats. Based on the softwarehardware bined multimedia processing. The official definition for embedded system is a applicationcentered ware tailorable dedicated puter system that can cater to the strict integrative requires of the application system of function, reliability, cost, volume and power dissipation. The graduate project plans to develop Mplayer with various play formats using the embedded platform of X86PC machine and ARM2410S, with the development of Linux embedded chips as the main line. The system first has acplished player39。s implementation of X86PC machine under the environment of Linux, followed which Mplayer GUI has been constructed to achieve the transplantation and debug from Mplayer to ARM2410 embedded platform. Meanwhile, Mplayer is designed to display various video formats though research on the file formats of various videos. The graduate project has acplished all the requires of the assignment. Key words: embedded。 Linux。 video format。 QT 目 錄 第一章 前言 .................................................1 1. 研究背景和意義 ...........................................1 2. 嵌入式系統(tǒng)概述 ...........................................2 嵌入式系統(tǒng)定義 .........................................2 嵌入式系統(tǒng)構(gòu)架 .........................................3 嵌入式系統(tǒng)開發(fā)流程 .....................................5 3. 研究現(xiàn)狀 ................................................7 嵌入式系統(tǒng)發(fā)展現(xiàn)狀 .....................................7 嵌入式移植研究現(xiàn)狀 .....................................8 畢設(shè)系統(tǒng)研究現(xiàn)狀 .......................................9 第二章 系統(tǒng)分析 ..........................................10 1. 系統(tǒng)通用模型 ............................................ 10 2. 系統(tǒng)主要任務(wù)和目標(biāo) ...................................... 11 主要研究內(nèi)容 ...........................................11 主要目標(biāo) ...............................................11 3. 系統(tǒng)結(jié)構(gòu)分析 .............................................12 ARMLinux 端 ............................................12 X86PC 端 ................................................12 4. 系統(tǒng)選用的開發(fā)工具 .......................................12 UPNETARM2410S 嵌入式開發(fā)平臺 ..........................12 Linux 操作系統(tǒng) ..........................................14 HEX EDIT ..............................................16 GCC 編譯器 ..............................................17 第三章 系統(tǒng)概要設(shè)計(jì) ..................................... 21 1. 總體設(shè)計(jì) ................................................ 21 系統(tǒng)體系結(jié)構(gòu) ........................................ 21 基本設(shè)計(jì)概念 ........................................ 22 2. 模塊設(shè)計(jì) ................................................ 25 功能 模塊對照表 ..................................... 25 各功能模塊邏輯關(guān)系 .................................. 26 第四章 系統(tǒng)詳細(xì)設(shè)計(jì) ..................................... 27 1. 嵌入式開發(fā)環(huán)境的搭建 .................................... 27 2. 視頻格式分析模塊 ........................................ 28 模塊概述 ............................................ 28 模塊分析 ............................................ 28 3. MPlayer 模塊 ............................................ 36 X86MPlayer 模塊 ..................................... 36 ARMMPlayer 模塊 ..................................... 39 MPlayer 編譯指令 ..................................... 40 4. Gcc 模塊 ................................................ 42 Gcc 模塊定義 ......................................... 42 ARMLinuxgcc 模塊安裝編譯 ........................... 43 5. MINICOM 模塊 ............................................ 44 MINICOM 定義 ......................................... 44 配置流程 ............................................ 44 ................................................. 45 內(nèi)核介紹 ............................................ 45 模塊執(zhí)行流程 ........................................ 45 7. GUI 模塊 ..............................................47 模塊概述 ............................................ 47 QT 環(huán)境搭建 .......................................... 47 插槽機(jī)制 ............................................ 49 主要數(shù)據(jù)結(jié)構(gòu)和服 務(wù)方法 .............................. 51 第五章 系統(tǒng)測試 ............................................ 54 1. 測試計(jì)劃 ................................................ 54 測試對象 ............................................ 54 測試目標(biāo) ............................................ 54 測試原則 ............................................ 55 測試策略 ............................................ 56 2. 測試過程 ................................................ 56 模塊測試 ............................................ 56 模塊集成測試 ........................................ 59 系統(tǒng)測試 ............................................ 61 3. 錯(cuò)誤總結(jié) ................................................ 62 Mplayer 移植錯(cuò)誤分析 ................................. 62 內(nèi)核聲卡驅(qū)動 BUG 消除 ................