80 lines
1.7 KiB
C
80 lines
1.7 KiB
C
/**
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* @file
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* Copyright 2014 (c) Anna Schumaker.
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*/
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#ifndef OCARINA_CORE_CALLBACK_H
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#define OCARINA_CORE_CALLBACK_H
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#include <core/library.h>
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#include <core/queue.h>
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/**
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* A structure for managing callback function pointers
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*/
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struct Callbacks {
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/* Audio callbacks */
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/**
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* Called when the audio layer loads a track.
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*
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* @param track The track that was just loaded.
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*/
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void (*on_track_loaded)(Track *);
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/**
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* Called when the audio layer's pause count changes.
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*
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* @param enabled The current status of automatic pausing.
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* @param n The number of tracks before pausing.
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*/
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void (*on_pause_count_changed)(bool, unsigned int);
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/* Deck callbacks */
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/**
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* Called when a queue is removed.
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*
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* @param queue The queue that is being removed.
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*/
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void (*on_pq_removed)(Queue *);
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/* Queue callbacks */
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/**
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* Called when tracks are added to a queue.
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*
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* @param queue The queue that was just modified.
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* @param row The index of the new track.
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*/
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void (*on_queue_track_add)(Queue *, unsigned int);
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/**
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* Called when tracks are removed from a queue
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*
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* @param queue The queue that was just modified.
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* @param row The former index of the track.
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*/
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void (*on_queue_track_del)(Queue *, unsigned int);
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/**
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* Called when a track's metadata changes.
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*
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* @param queue The queue containing the track.
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* @param row The current index of the track.
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*/
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void (*on_queue_track_changed)(Queue *, unsigned int);
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};
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/**
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* Called to access the callbacks structure.
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*
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* @return The current struct Callbacks for this application.
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*/
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struct Callbacks *get_callbacks();
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#endif /* OCARINA_CORE_CALLBACK_H */
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