Why we use OpenAL in PHP?

[Soumen]

Hello friends,
I have done coding in PHP programming language to better extent. But when I was going through the tutorials of PHP, I found the term OpenAL which I never heard before. So I am asking my query here, as you guys do lot of help. Please explain me what is the OpenAL and why we use OpenAL in PHP.?? Thanks in Advance.!!

[Solitario]

I think first you should understand the concepts about the OpenAL. OpenAL is a cross-platform 3D audio API appropriate for use with gaming applications and many other types of audio applications. The library models a collection of audio sources moving in a 3D space that are heard by a single listener somewhere in that space. The basic OpenAL objects are a Listener, a Source, and a buffer. There can be a large number of Buffers, which contain audio data. Each buffer can be attached to one or more Sources, which represent points in 3D space Which are emitting audio. There is always one Listener object which represents the position where the sources are heard - rendering is done from the perspective of the Listener.

[Deabelos]

The functions of OpenAL are available in the standard PHP module, which is always available. his extension PECL is not bundled with PHP. While talking about the resource types, this extension defines four resource types which are mentioned as follows :

• Open AL (Device) - Returned by openal_device_open ()
• Open AL (Context) - Returned by openal_context_create ()
• Open AL (Buffer) - Returned by openal_buffer_create ()
• Open AL (Source) - Returned by openal_source_create ().

[Warner]

I am giving you the predefined constants that are used by the OpenAL in PHP, the following are the predefined constants :

• ALC_FREQUENCY (integer)
• ALC_REFRESH (integer)
• ALC_SYNC (integer)
• AL_FREQUENCY (integer)
• AL_BITS (integer)
• AL_CHANNELS (integer)
• AL_SIZE (integer)
• AL_BUFFER (integer)

[kyosang]

The following are the OpenAL Functions, that are commonly used :

• openal_buffer_create - Generate OpenAL buffer
• openal_buffer_data - Load a buffer with data
• openal_buffer_destroy - Destroys an OpenAL buffer
• openal_buffer_get - Retrieve an OpenAL buffer property
• openal_buffer_loadwav - Load a. wav file into a buffer
• openal_context_create - Create an audio processing context
• openal_context_current - Make the specified context current
• openal_context_destroy - Destroys a context
• openal_context_process - Process the specified context
• openal_context_suspend - Suspend the specified context