45
edits
Plugins:PepperAudioAPI: Difference between revisions
Jump to navigation
Jump to search
→Obtaining Pepper Extensions and the Pepper Audio Interface
| Line 84: | Line 84: | ||
<pre> | <pre> | ||
NPPepperExtensions *pepper; | NPPepperExtensions *pepper; | ||
NPDevice *audio = NULL; | |||
/* Get PEPPER extensions */ | /* Get PEPPER extensions */ | ||
NPERR ret = NPN_GetValue(instance, NPNVPepperExtensions, &pepper); | NPERR ret = NPN_GetValue(instance, NPNVPepperExtensions, &pepper); | ||
if (NPERR_NO_ERROR == ret) { | if (NPERR_NO_ERROR == ret) { | ||
/* successfully obtained Pepper extensions, now acquire audio... */ | /* successfully obtained Pepper extensions, now acquire audio... */ | ||
audio = pepper-> | audio = pepper->AcquireDevice(NPPepperAudioDevice); | ||
} else { | } else { | ||
/* Pepper extensions are not available */ | /* Pepper extensions are not available */ | ||
| Line 99: | Line 99: | ||
</pre> | </pre> | ||
Once an interface to the audio device is acquired, an application can query capabilities of the device, and from there, create a configuration (a set of capabilities.) In this simple example, the application picks 44.1kHz, stereo output using int16 sample types. It uses | Once an interface to the audio device is acquired, an application can query capabilities of the device, and from there, create a configuration (a set of capabilities.) In this simple example, the application picks 44.1kHz, stereo output using int16 sample types. It uses queryCapability() to retrieve a recommended sample frame count for the output buffer. | ||
<pre> | <pre> | ||