mmr_event

Get the next available event

Synopsis:

#include <mm/renderer/events.h>

const mmr_event_t* mmr_event_get(mmr_context_t *ctxt)

Arguments:

ctxt: A context handle

Library:

mmrndclient

Description:

Get the next available event. The function returns an mmr_event_t structure, which contains detailed event information such as the new context state. Typically, you would call this function within an event-processing loop, after calling either mmr_event_arm() or mmr_event_wait().

Note:

This function is thread-safe only when using different context handles in each call. The event data returned by one mmr_event_get() call gets overwritten by the next call to this function with the same handle. This function is neither interrupt handler-safe nor signal-handler safe.

The data returned in the mmr_event_t structure is valid only until the next mmr_event_get() call. If you want to keep the data longer, copy the mmr_event_t contents into other program variables, cloning any strm_string_t fields within the structure.

Note: In any playback state, mmr_event_get() might return the MMR_EVENT_NONE event. Applications must gracefully handle this event, perhaps simply by ignoring it. For an example of a situation when MMR_EVENT_NONE might be returned, see mmr_event_wait().

Returns:

A pointer to an event, or NULL on failure (check errno)