博碩士論文 965202073 詳細資訊




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姓名 邱日成(Rih-Cheng Ciou)  查詢紙本館藏   畢業系所 資訊工程學系
論文名稱 基於網路行動裝置所設計可擴展的服務品質感知GStreamer模組
(An Expandable QoS Aware GStreamer Module Plug-in Design for Portable Internet Device)
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摘要(中) 隨著電腦網路、硬體以及多媒體等相關技術迅速地發展,我們不再只是像以前一樣,從電視觀看影音娛樂,近日我們更可以透過網際網路抓取檔案,並在手持裝置上觀賞我們想看的多媒體內容。然而,單靠手持裝置有限的計算能力是無法提供高品質的影音娛樂,於是,手持裝置皆開始採用硬體解碼。
但是硬體解碼無法直接被現有的播放器使用,需要透過修改撥放器程式或是撰寫額外的套件來被使用,然而,不同的硬體解碼套件有許多相似的部分,開發者往往花費大量的時間做相同的事。因此將重覆的部分設計成一個標準流程,以加快開發的速度。
在本篇論文中,我們將焦點放在設計套件的擴展性和服務品質管理上。為了讓之後可以輕易的增加新的硬體解碼和服務品質感知的方法,我們將在本論文中提出一個解決方案,並說明所遇到的問題及解決方法。以實現一個高擴展性且有服務品質感知的解碼套件供之後的開發者使用。
摘要(英) As computer networks, hardware and multimedia technologies grow rapidly, we not only receive audio and video information from television as we used to do. Recently we can get multimedia file from Internet.
Moreover, we can playback these files on the mobile handheld device. However, the computing power of mobile handheld device is not enough to provide a high quality amusement of multimedia. Therefore, hardware decoder was introduced to solve this problem on the mobile handheld device.
But media player nowadays cannot use hardware decoder directly. It is necessary to modify player or develop plug-ins for hardware decoder. However, there are some similar parts with each other. So the developers usually spend much time at do the same things. Therefore, we design a standard process that deals with the similar parts for reducing the development time.
In this paper, we would like to focus on designing the expandable QoS plug-in. In order to add new hardware decoder and QoS rule easily, we point out the key problems that we encounter and propose a solution to solve them. Our main goal is to implement an expandable and QoS function decode plug-in for future developers.
關鍵字(中) ★ 手持裝置
★ GStreamer
★ 服務品質
關鍵字(英) ★ Quality of service
★ Mobile handheld device
★ GStreamer
論文目次 中文摘要 i
Abstract ii
致謝 iv
Table of Contents v
List of Tables viii
List of Figures ix
1 Introduction 1
1.1 Motivation 1
1.2 Challenge 3
1.3 Organization 4
2 Background and Related Works 5
2.1 NT987 Series Platform 5
2.2 Openembedded 6
2.3 Comparison to di erent Player 8
2.3.1 MPlayer 9
2.3.2 GStreamer 9
2.3.3 The Selected Solution 10
2.4 MPEG2 Codec 11
3 System Architecture 13
3.1 Goal 13
3.2 System Overview 16
3.3 System Architecture 18
3.4 GStreamer Architecture 21
3.5 GStreamer Plug-in Architecture 22
3.6 Decode Plug-in Architecture 24
4 Implementation 26
4.1 Decode Plug-in Implementation 26
4.1.1 Flow Path Layer 27
4.1.2 Information Layer 28
4.1.3 Codec Layer 29
4.2 MPEG2 Codec Implementation 31
4.3 Bu er Manager Implementation 34
4.4 Timestamp Implementation 36
4.5 QoS Implementation 38
5 Conclusion and Future Works 44
List of References 46
參考文獻 [1] Gstreamer." http://www.gstreamer.net/.
[2] Openembedded." http://www.openembedded.org/.
[3] Poky linux." http://www.pokylinux.org/.
[4] Mplayer." http://www.mplayerhq.hu/.
[5] Moving picture experts group." http://en.wikipedia.org/wiki/MPEG.
[6] Filters for avisynth and virtualdub." http://neuron2.net/index.html.
[7] R.-L. Gau, Implementation of lightweight user interface engine for portable multimedia player on arm-based embedded system," Master's thesis, National Central University, 2009.
[8] C.-A. Liu, An expandable cross platform gsm/hsdpa wireless engine development solution for mobile internet devices," Master's thesis, National Central University, 2009.
[9] C.-L. Wu, User-friendly small-screen based embedded web browser development for portable mutlimedia devices," Master's thesis, National Central University, 2009.
[10] Y.-C. Chen, A cross-platfrom widget platform design and development for embedded mobile devices," Master's thesis, National Central University, 2009.
[11] K.-R. Peng, E ective multi-format decode processing management development for soc mobile multimedia devices," Master's thesis, National Central University, 2009.
[12] Y.-H. Li, Gstreamer based home media center implementation on intel oloriver," Master's thesis, National Central University, 2007.
[13] Generic coding of moving pictures and associated audio: Video." ISO/IEC 13818-2.
[14] Audio video interleave." http://en.wikipedia.org/wiki/AVI.
指導教授 吳曉光(Hsiao-Kuang Wu) 審核日期 2009-7-8
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