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New light-weight event handling:

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1. No more needs to call snd_seq_event_free() for releasing the cell.
   But you should keep it anyway, both for compatibility and for future
   extension.
2. API is basically kept unmodified.  The sign of return values are same,
   i.e. positive integers will be returned if events exist on buffer/queue.
   But the exact value may be different from the older version.
3. snd_seq_event_input() renders the event directly from the static input
   buffer.  The function is not re-entrant.
4. snd_seq_event_input_selective() is removed.
This commit is contained in:
Takashi Iwai 2000-08-29 11:39:08 +00:00
parent e5d597c48c
commit a7f3ff4a4f
3 changed files with 120 additions and 340 deletions
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6
include/seq.h
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@ -44,12 +44,9 @@ int snd_seq_get_queue_owner(snd_seq_t *handle, int q, snd_seq_queue_owner_t *own
int snd_seq_set_queue_owner(snd_seq_t *handle, int q, snd_seq_queue_owner_t *owner);
int snd_seq_get_queue_timer(snd_seq_t *handle, int q, snd_seq_queue_timer_t *timer);
int snd_seq_set_queue_timer(snd_seq_t *handle, int q, snd_seq_queue_timer_t *timer);
#ifdef use_seqsync
int snd_seq_get_queue_sync(snd_seq_t *handle, int q, snd_seq_queue_sync_t *sync);
int snd_seq_set_queue_sync(snd_seq_t *handle, int q, snd_seq_queue_sync_t *sync);
#endif
int snd_seq_get_queue_client(snd_seq_t *handle, int q, snd_seq_queue_client_t *queue);
int snd_seq_set_queue_client(snd_seq_t *handle, int q, snd_seq_queue_client_t *queue);
int snd_seq_create_queue(snd_seq_t *seq, snd_seq_queue_info_t *info);
int snd_seq_alloc_named_queue(snd_seq_t *seq, char *name);
int snd_seq_alloc_queue(snd_seq_t *handle);
int snd_seq_free_queue(snd_seq_t *handle, int q);
@ -71,7 +68,6 @@ int snd_seq_event_output_buffer(snd_seq_t *handle, snd_seq_event_t *ev);
int snd_seq_event_output_direct(snd_seq_t *handle, snd_seq_event_t *ev);
int snd_seq_event_input(snd_seq_t *handle, snd_seq_event_t **ev);
int snd_seq_event_input_pending(snd_seq_t *seq, int fetch_sequencer);
int snd_seq_event_input_selective(snd_seq_t *seq, snd_seq_event_t **ev, int type, int blocking);
int snd_seq_flush_output(snd_seq_t *handle);
int snd_seq_event_output_pending(snd_seq_t *seq);
int snd_seq_extract_output(snd_seq_t *handle, snd_seq_event_t **ev);