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Diffstat (limited to 'include/adlmidi.h')
| -rw-r--r-- | include/adlmidi.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/include/adlmidi.h b/include/adlmidi.h index f19bca0..77fbe74 100644 --- a/include/adlmidi.h +++ b/include/adlmidi.h @@ -664,6 +664,24 @@ enum ADLMIDI_TrackOptions */ extern int adl_setTrackOptions(struct ADL_MIDIPlayer *device, size_t trackNumber, unsigned trackOptions); +/** + * @brief Handler of callback trigger events + * @param userData Pointer to user data (usually, context of something) + * @param trigger Value of the event which triggered this callback. + * @param track Identifier of the track which triggered this callback. + */ +typedef void (*ADL_TriggerHandler)(void *userData, unsigned trigger, size_t track); + +/** + * @brief Defines a handler for callback trigger events + * @param device Instance of the library + * @param handler Handler to invoke from the sequencer when triggered, or NULL. + * @param userData Instance of the library + * @return 0 on success, <0 when any error has occurred + */ +extern int adl_setTriggerHandler(struct ADL_MIDIPlayer *device, ADL_TriggerHandler handler, void *userData); + + /* ======== Meta-Tags ======== */ |