In recent years, more and more vendors adopt Linux to be the embedded operating system for their electronic products because of its combination of reliability, performance, good toolchains, portability, and configurability. However, Linux kernel is complex, and different electronic products may use different platforms. For this reason, it often requires that Linux be ported to different platforms.
Vedio and sound have been supported by Linux for a long time. The Open Sound System (OSS) plays an important role in Linux¡¦s sound system. OSS is a device driver for sound cards and other sound devices under various UNIX and UNIX-compatible operating systems. The biggest problem with OSS is that the free implementation that exists in the Kernel is quite limited.
For a better support of modern sound cards, a new sound driver project was started by Jaroslav Kysela and others. Jaroslav Kysela started with a sound driver he needed to supporta sound card, and this grew into the ALSA project which he co-ordinates. More and More people become involved in the development of ALSA.
This thesis can be divided into two parts. In the first part, we give a detailed description of how we port ALSA to an embedded system, which include both ALSA driver and ALSA library. In the second part, we turn our attention to applications that rely on ALSA, which include a PCM recorder, a PCM player, and a MP3 player.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0822106-130523 |
| Date | 22 August 2006 |
| Creators | Yang, I-fan |
| Contributors | Shiann-Rong Kuang, Chia-Ping Chen, Ming-chao chiang |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | English |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0822106-130523 |
| Rights | not_available, Copyright information available at source archive |
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