C. OpenAL Audio Bindings

Введение

Platform independent audio bindings. Requires the OpenAL library.

Установка

Это расширение PECL не поставляется вместе с PHP.

Дополнительная информация, такая как новый версии, скачивание, исходные файлы, информация о разработчике и CHANGELOG, могут быть найдены здесь: http://pecl.php.net/package/openal.

Вы можете скачать DLL этого расширения PECL со страницы PHP Downloads или http://snaps.php.net/.

Настройка во время выполнения

Данное расширение не определяет никакие директивы конфигурации в php.ini.

Типы ресурсов

This extension defines four resource types: Open AL(Device) - Returned by openal_device_open(), Open AL(Context) - Returned by openal_context_create(), Open AL(Buffer) - Returned by openal_buffer_create(), and Open AL(Source) - Returned by openal_source_create().

Предопределенные константы

Перечисленные ниже константы определены данным расширением и могут быть доступны только в том случае, если PHP был собран с поддержкой этого расширения или же в том случае, если данное расширение подгружается во время выполнения.

ALC_FREQUENCY (integer)

Context Attribute

ALC_REFRESH (integer)

Context Attribute

ALC_SYNC (integer)

Context Attribute

AL_FREQUENCY (integer)

Buffer Setting

AL_BITS (integer)

Buffer Setting

AL_CHANNELS (integer)

Buffer Setting

AL_SIZE (integer)

Buffer Setting

AL_BUFFER (integer)

Source/Listener Setting (Integer)

AL_SOURCE_RELATIVE (integer)

Source/Listener Setting (Integer)

AL_SOURCE_STATE (integer)

Source/Listener Setting (Integer)

AL_PITCH (integer)

Source/Listener Setting (Float)

AL_GAIN (integer)

Source/Listener Setting (Float)

AL_MIN_GAIN (integer)

Source/Listener Setting (Float)

AL_MAX_GAIN (integer)

Source/Listener Setting (Float)

AL_MAX_DISTANCE (integer)

Source/Listener Setting (Float)

AL_ROLLOFF_FACTOR (integer)

Source/Listener Setting (Float)

AL_CONE_OUTER_GAIN (integer)

Source/Listener Setting (Float)

AL_CONE_INNER_ANGLE (integer)

Source/Listener Setting (Float)

AL_CONE_OUTER_ANGLE (integer)

Source/Listener Setting (Float)

AL_REFERENCE_DISTANCE (integer)

Source/Listener Setting (Float)

AL_POSITION (integer)

Source/Listener Setting (Float Vector)

AL_VELOCITY (integer)

Source/Listener Setting (Float Vector)

AL_DIRECTION (integer)

Source/Listener Setting (Float Vector)

AL_ORIENTATION (integer)

Source/Listener Setting (Float Vector)

AL_FORMAT_MONO8 (integer)

PCM Format

AL_FORMAT_MONO16 (integer)

PCM Format

AL_FORMAT_STEREO8 (integer)

PCM Format

AL_FORMAT_STEREO16 (integer)

PCM Format

AL_INITIAL (integer)

Source State

AL_PLAYING (integer)

Source State

AL_PAUSED (integer)

Source State

AL_STOPPED (integer)

Source State

AL_LOOPING (integer)

Source State

AL_TRUE (integer)

Boolean value recognized by OpenAL

AL_FALSE (integer)

Boolean value recognized by OpenAL

Содержание
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
openal_device_close --  Close an OpenAL device
openal_device_open --  Initialize the OpenAL audio layer
openal_listener_get --  Retrieve a listener property
openal_listener_set --  Set a listener property
openal_source_create --  Generate a source resource
openal_source_destroy --  Destroy a source resource
openal_source_get --  Retrieve an OpenAL source property
openal_source_pause --  Pause the source
openal_source_play --  Start playing the source
openal_source_rewind --  Rewind the source
openal_source_set --  Set source property
openal_source_stop --  Stop playing the source
openal_stream --  Begin streaming on a source


OpenAL Audio Bindings
ganswijk at xs4all dot nl
31-Jan-2005 05:20
There is no explanation about what OpenAL actually is and you first have to follow quite a lot of links and download an SDK (from the Creative site) to get information about what OpenAL actually is, but here is what I understand it is:

It's a new standard to create a kind of 3D sound landscape in the way that OpenGL creates a visual 3D landscape. It's not a general sound card interface (as I was looking for). It doesn't handle MIDI and it can't handle sound input (yet).

I was hoping that I could experiment with a kind of homebrewed VoIP with this library but that's not the case.

BTW. The "links to the DLL", don't actually lead to an DLL and finding one is very hard and I haven't found one yet, but at least I know now that I don't have to search any further.

For the beautiful people making this excellent PHP site the great resource it is: Feel free to use this email as you seem fit...

<Usageopenal_buffer_create>
 Last updated: Tue, 15 Nov 2005