From 21c068f1916330e90f814bed461fe0821d1665ec Mon Sep 17 00:00:00 2001
From: Hans-Christoph Steiner <eighthave@users.sourceforge.net>
Date: Sun, 9 Oct 2011 16:36:37 +0000
Subject: checked in pd-0.43-0.src.tar.gz

svn path=/trunk/; revision=15557
---
 pd/portaudio/src/os/unix/pa_unix_hostapis.c | 29 ++++++++++++++++++-
 pd/portaudio/src/os/unix/pa_unix_util.c     | 45 +++++++++++++++++++++++------
 2 files changed, 64 insertions(+), 10 deletions(-)

(limited to 'pd/portaudio/src/os/unix')

diff --git a/pd/portaudio/src/os/unix/pa_unix_hostapis.c b/pd/portaudio/src/os/unix/pa_unix_hostapis.c
index d695e1b1..339e1b14 100644
--- a/pd/portaudio/src/os/unix/pa_unix_hostapis.c
+++ b/pd/portaudio/src/os/unix/pa_unix_hostapis.c
@@ -1,5 +1,5 @@
 /*
- * $Id: pa_unix_hostapis.c 1097 2006-08-26 08:27:53Z rossb $
+ * $Id: pa_unix_hostapis.c 1413 2009-05-24 17:00:36Z aknudsen $
  * Portable Audio I/O Library UNIX initialization table
  *
  * Based on the Open Source API proposed by Ross Bencina
@@ -49,10 +49,26 @@ PaError PaOSS_Initialize( PaUtilHostApiRepresentation **hostApi, PaHostApiIndex
 PaError PaSGI_Initialize( PaUtilHostApiRepresentation **hostApi, PaHostApiIndex index );
 /* Linux AudioScience HPI */
 PaError PaAsiHpi_Initialize( PaUtilHostApiRepresentation **hostApi, PaHostApiIndex index );
+PaError PaMacCore_Initialize( PaUtilHostApiRepresentation **hostApi, PaHostApiIndex index );
+PaError PaSkeleton_Initialize( PaUtilHostApiRepresentation **hostApi, PaHostApiIndex index );
 
+/** Note that on Linux, ALSA is placed before OSS so that the former is preferred over the latter.
+ */
 
 PaUtilHostApiInitializer *paHostApiInitializers[] =
     {
+#ifdef __linux__
+
+#ifdef PA_USE_ALSA
+        PaAlsa_Initialize,
+#endif
+
+#ifdef PA_USE_OSS
+        PaOSS_Initialize,
+#endif
+
+#else   /* __linux__ */
+
 #ifdef PA_USE_OSS
         PaOSS_Initialize,
 #endif
@@ -61,6 +77,8 @@ PaUtilHostApiInitializer *paHostApiInitializers[] =
         PaAlsa_Initialize,
 #endif
 
+#endif  /* __linux__ */
+
 #ifdef PA_USE_JACK
         PaJack_Initialize,
 #endif
@@ -72,6 +90,15 @@ PaUtilHostApiInitializer *paHostApiInitializers[] =
 #ifdef PA_USE_ASIHPI
         PaAsiHpi_Initialize,
 #endif
+
+#ifdef PA_USE_COREAUDIO
+        PaMacCore_Initialize,
+#endif
+
+#ifdef PA_USE_SKELETON
+        PaSkeleton_Initialize,
+#endif
+
         0   /* NULL terminated array */
     };
 
diff --git a/pd/portaudio/src/os/unix/pa_unix_util.c b/pd/portaudio/src/os/unix/pa_unix_util.c
index 1cb83875..de54e51d 100644
--- a/pd/portaudio/src/os/unix/pa_unix_util.c
+++ b/pd/portaudio/src/os/unix/pa_unix_util.c
@@ -1,5 +1,5 @@
 /*
- * $Id: pa_unix_util.c 1232 2007-06-16 14:49:43Z rossb $
+ * $Id: pa_unix_util.c 1419 2009-10-22 17:28:35Z bjornroche $
  * Portable Audio I/O Library
  * UNIX platform-specific support functions
  *
@@ -51,6 +51,13 @@
 #include <math.h>
 #include <errno.h>
 
+#if defined(__APPLE__) && !defined(HAVE_MACH_ABSOLUTE_TIME)
+#define HAVE_MACH_ABSOLUTE_TIME
+#endif
+#ifdef HAVE_MACH_ABSOLUTE_TIME
+#include <mach/mach_time.h>
+#endif
+
 #include "pa_util.h"
 #include "pa_unix_util.h"
 #include "pa_debugprint.h"
@@ -118,27 +125,47 @@ void Pa_Sleep( long msec )
 #endif
 }
 
-/*            *** NOT USED YET: ***
-static int usePerformanceCounter_;
-static double microsecondsPerTick_;
+#ifdef HAVE_MACH_ABSOLUTE_TIME
+/*
+    Discussion on the CoreAudio mailing list suggests that calling
+    gettimeofday (or anything else in the BSD layer) is not real-time
+    safe, so we use mach_absolute_time on OSX. This implementation is 
+    based on these two links:
+
+    Technical Q&A QA1398 - Mach Absolute Time Units
+    http://developer.apple.com/mac/library/qa/qa2004/qa1398.html
+
+    Tutorial: Performance and Time.
+    http://www.macresearch.org/tutorial_performance_and_time
 */
 
+/* Scaler to convert the result of mach_absolute_time to seconds */
+static double machSecondsConversionScaler_ = 0.0; 
+#endif
+
 void PaUtil_InitializeClock( void )
 {
-    /* TODO */
+#ifdef HAVE_MACH_ABSOLUTE_TIME
+    mach_timebase_info_data_t info;
+    kern_return_t err = mach_timebase_info( &info );
+    if( err == 0  )
+        machSecondsConversionScaler_ = 1e-9 * (double) info.numer / (double) info.denom;
+#endif
 }
 
 
 PaTime PaUtil_GetTime( void )
 {
-#ifdef HAVE_CLOCK_GETTIME
+#ifdef HAVE_MACH_ABSOLUTE_TIME
+    return mach_absolute_time() * machSecondsConversionScaler_;
+#elif defined(HAVE_CLOCK_GETTIME)
     struct timespec tp;
     clock_gettime(CLOCK_REALTIME, &tp);
-    return (PaTime)(tp.tv_sec + tp.tv_nsec / 1.e9);
+    return (PaTime)(tp.tv_sec + tp.tv_nsec * 1e-9);
 #else
     struct timeval tv;
     gettimeofday( &tv, NULL );
-    return (PaTime) tv.tv_usec / 1000000. + tv.tv_sec;
+    return (PaTime) tv.tv_usec * 1e-6 + tv.tv_sec;
 #endif
 }
 
@@ -190,7 +217,7 @@ PaError PaUtil_CancelThreading( PaUtilThreading *threading, int wait, PaError *e
 /* paUnixMainThread 
  * We have to be a bit careful with defining this global variable,
  * as explained below. */
-#ifdef __apple__
+#ifdef __APPLE__
 /* apple/gcc has a "problem" with global vars and dynamic libs.
    Initializing it seems to fix the problem.
    Described a bit in this thread:
-- 
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