diff options
Diffstat (limited to 'desiredata/portmidi_osx/pmutil.h')
-rw-r--r-- | desiredata/portmidi_osx/pmutil.h | 44 |
1 files changed, 0 insertions, 44 deletions
diff --git a/desiredata/portmidi_osx/pmutil.h b/desiredata/portmidi_osx/pmutil.h deleted file mode 100644 index b6268ed3..00000000 --- a/desiredata/portmidi_osx/pmutil.h +++ /dev/null @@ -1,44 +0,0 @@ -/* pmutil.h -- some helpful utilities for building midi - applications that use PortMidi - */ - -typedef void PmQueue; - -/* - A single-reader, single-writer queue is created by - Pm_QueueCreate(), which takes the number of messages and - the message size as parameters. The queue only accepts - fixed sized messages. Returns NULL if memory cannot be allocated. - - Pm_QueueDestroy() destroys the queue and frees its storage. - */ - -PmQueue *Pm_QueueCreate(long num_msgs, long bytes_per_msg); -PmError Pm_QueueDestroy(PmQueue *queue); - -/* - Pm_Dequeue() removes one item from the queue, copying it into msg. - Returns 1 if successful, and 0 if the queue is empty. - Returns pmBufferOverflow and clears the overflow flag if - the flag is set. - */ -PmError Pm_Dequeue(PmQueue *queue, void *msg); - - -/* - Pm_Enqueue() inserts one item into the queue, copying it from msg. - Returns pmNoError if successful and pmBufferOverflow if the queue was - already full. If pmBufferOverflow is returned, the overflow flag is set. - */ -PmError Pm_Enqueue(PmQueue *queue, void *msg); - - -/* - Pm_QueueFull() returns non-zero if the queue is full - Pm_QueueEmpty() returns non-zero if the queue is empty - - Either condition may change immediately because a parallel - enqueue or dequeue operation could be in progress. - */ -int Pm_QueueFull(PmQueue *queue); -#define Pm_QueueEmpty(m) (m->head == m->tail) |