(PECL openal >= 0.1.0)
openal_stream — Begin streaming on a source
An Open AL(Source) resource (previously created by openal_source_create()).
Format of data, one of: AL_FORMAT_MONO8, AL_FORMAT_MONO16, AL_FORMAT_STEREO8 和 AL_FORMAT_STEREO16
Frequency of data to stream given in Hz.
Returns a stream resource on success 或者在失败时返回 FALSE.