winecoreaudio: Introduce a helper to retrieve the time.

dlls/winecoreaudio.drv/coremidi.c

@@ -143,6 +143,14 @@ static void set_in_notify(struct notify_context *notify, struct midi_src *src, W
  *  CoreMIDI IO threaded callback,
  *  we can't call Wine debug channels, critical section or anything using NtCurrentTeb here.
  */
+static uint64_t get_time_ms(void)
+{
+    static mach_timebase_info_data_t timebase;
+
+    if (!timebase.denom) mach_timebase_info(&timebase);
+    return mach_absolute_time() / 1000000 * timebase.numer / timebase.denom;
+}
+
 static void midi_in_read_proc(const MIDIPacketList *pktlist, void *refCon, void *connRefCon)
 {
     CFMessagePortRef msg_port = CFMessagePortCreateRemote(kCFAllocatorDefault, midi_in_thread_port_name);
@@ -917,7 +925,7 @@ static DWORD midi_in_start(WORD dev_id)
         return MMSYSERR_BADDEVICEID;
     }
     srcs[dev_id].state = 1;
-    srcs[dev_id].startTime = NtGetTickCount();
+    srcs[dev_id].startTime = get_time_ms();
     return MMSYSERR_NOERROR;
 }
 
@@ -936,7 +944,7 @@ static DWORD midi_in_stop(WORD dev_id)
 
 static DWORD midi_in_reset(WORD dev_id, struct notify_context *notify)
 {
-    DWORD cur_time = NtGetTickCount();
+    DWORD cur_time = get_time_ms();
     DWORD err = MMSYSERR_NOERROR;
     struct midi_src *src;
     MIDIHDR *hdr;

dlls/winecoreaudio.drv/midi.c

@@ -45,6 +45,7 @@
 
 WINE_DEFAULT_DEBUG_CHANNEL(midi);
 
+#include <mach/mach_time.h>
 #include <CoreAudio/CoreAudio.h>
 
 #define WINE_DEFINITIONS
@@ -61,6 +62,14 @@ static MIDIPortRef MIDIInPort = NULL;
 
 MIDISource *sources;
 
+static uint64_t get_time_ms(void)
+{
+    static mach_timebase_info_data_t timebase;
+
+    if (!timebase.denom) mach_timebase_info(&timebase);
+    return mach_absolute_time() / 1000000 * timebase.numer / timebase.denom;
+}
+
 static void notify_client(struct notify_context *notify)
 {
     TRACE("dev_id=%d msg=%d param1=%04lX param2=%04lX\n", notify->dev_id, notify->msg, notify->param_1, notify->param_2);
@@ -183,7 +192,7 @@ static CFDataRef MIDIIn_MessageHandler(CFMessagePortRef local, SInt32 msgid, CFD
                 }
 
                 midi_lock( TRUE );
-                currentTime = GetTickCount() - src->startTime;
+                currentTime = get_time_ms() - src->startTime;
 
                 while (len) {
                     LPMIDIHDR lpMidiHdr = src->lpQueueHdr;
@@ -218,7 +227,7 @@ static CFDataRef MIDIIn_MessageHandler(CFMessagePortRef local, SInt32 msgid, CFD
             }
 
             midi_lock( TRUE );
-            currentTime = GetTickCount() - src->startTime;
+            currentTime = get_time_ms() - src->startTime;
 
             while (pos < msg->length)
             {