Move library tree where it belongs

lib-src/portmidi/porttime/porttime.h

@@ -0,0 +1,72 @@
+/* porttime.h -- portable interface to millisecond timer */
+
+/* CHANGE LOG FOR PORTTIME
+  10-Jun-03 Mark Nelson & RBD
+    boost priority of timer thread in ptlinux.c implementation
+ */
+
+/* Should there be a way to choose the source of time here? */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+typedef enum {
+    ptNoError = 0,         /* success */
+    ptHostError = -10000,  /* a system-specific error occurred */
+    ptAlreadyStarted,      /* cannot start timer because it is already started */
+    ptAlreadyStopped,      /* cannot stop timer because it is already stopped */
+    ptInsufficientMemory   /* memory could not be allocated */
+} PtError;
+
+
+typedef long PtTimestamp;
+
+typedef void (PtCallback)( PtTimestamp timestamp, void *userData );
+
+/*
+    Pt_Start() starts a real-time service.
+
+    resolution is the timer resolution in ms. The time will advance every
+    resolution ms.
+
+    callback is a function pointer to be called every resolution ms.
+
+    userData is passed to callback as a parameter.
+
+    return value:
+    Upon success, returns ptNoError. See PtError for other values.
+*/
+PtError Pt_Start(int resolution, PtCallback *callback, void *userData);
+
+/*
+    Pt_Stop() stops the timer.
+
+    return value:
+    Upon success, returns ptNoError. See PtError for other values.
+*/
+PtError Pt_Stop();
+
+/*
+    Pt_Started() returns true iff the timer is running.
+*/
+int Pt_Started();
+
+/* 
+    Pt_Time() returns the current time in ms.
+*/
+PtTimestamp Pt_Time();
+
+/*
+    Pt_Sleep() pauses, allowing other threads to run.
+
+    duration is the length of the pause in ms. The true duration 
+    of the pause may be rounded to the nearest or next clock tick
+    as determined by resolution in Pt_Start().
+*/
+void Pt_Sleep(long duration);
+
+#ifdef __cplusplus
+}
+#endif