RegisterCallback()

Updated: October 26, 2022

Register a callback for handling buffer queue events

Synopsis:

#include <OMXAL/OpenMAXAL_QNX.h>
struct XAQNXBufferQueueSourceItf_ {
    XAresult (*RegisterCallback)(XAQNXBufferQueueSourceItf self,
                                 xaQNXBufferQueueSourceCallback callback,
                                 void *pCallbackContext);
} ;

Arguments:

self
A reference to the source interface
callback
An xaQNXBufferQueueSourceCallback variable specifying the event-handling callback
pCallbackContext
An optional pointer to extra data to be passed, unchanged, as the pCallbackContext argument to the callback function. Your application must manage any memory associated with that data. You can specify NULL if you're not using extra data.

Library:

mmfilter

Returns:

An XA_RESULT_* constant indicating the operation result