Linux-based voice card development platform-general Linux technology-Linux programming and kernel information. The following is a detailed description. Statement: This article is only a technical article of myself. I have no other intention to publish it in a newspaper (as required by the leaders. The driver is developed by myself, but it is not good for me, so please give us some suggestions. Thank you first.
1.1 Preface Nowadays, application development based on Linux operating system is more and more extensive. Linux is widely favored because it is not only free, but also robust, secure, and stable. Undoubtedly, Linux has become one of the most popular application development operating systems today.
This article will discuss with you the development of voice card application systems on Linux. Currently, voice cards are mainly used in interactive voice response, call center, unified message processing, small office/Home Office, IP phone, and so on.
1.2 System Structure If you do not consider the diversity and complexity of the application system structure, the structure of the voice card from the low-layer driver to the application system is usually as follows: (the figure is omitted)
Application Systems are diversified due to different needs and objectives, which is not the subject of this article.
The API interface acts as a link. Applications call system services through APIS.
System services usually adopt the function sharing library, along with detailed user manuals. To facilitate the configuration of voice card parameters, the system service layer usually provides the parameter configuration file. You can modify the configuration item values of the configuration file at any time as needed.
The kernel module can be loaded to manipulate and respond to voice cards, and is part of the driver. When installing the voice card driver, the driver will be automatically configured according to the voice card type, the specific details of the application system developers generally do not need to consider.
1.3 Application Development After installing the voice card driver and setting up the environment required for the application system, you can start to gradually develop the application system. The best entry point for application system development is the demo program. The following describes the common synway voice cards on the market. First obtain the demo program (download from the http://www.sanhuid.com/SoftDown.htm); then read the demo program source code in conjunction with the user manual, this not only can be familiar with common API functions, but also can master the system design process; secondly, design, develop, and debug the application system as needed. Finally, rewrite the configuration file values before running the system.
1.4 conclusion If your company wants to develop a voice card application system with good performance and free of charge. It is wise to choose Linux, but be prepared. Linux basically does not provide after-sales service. But now there are a lot of experts. If you are lucky, you may be able to meet a few.
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