From 2c20f1c6c6f967c513a819e1304cb275ca68615b Mon Sep 17 00:00:00 2001
From: Sebastian Reimers <hallo@studio-link.de>
Date: Wed, 7 Sep 2022 07:54:55 +0200
Subject: [PATCH 1/3] slaudio: prevent suspend on macOS

This helps backup applications to detect running apps
---
 src/modules/slaudio/slaudio.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/src/modules/slaudio/slaudio.c b/src/modules/slaudio/slaudio.c
index 8da9425..732cc50 100644
--- a/src/modules/slaudio/slaudio.c
+++ b/src/modules/slaudio/slaudio.c
@@ -15,6 +15,9 @@
 #ifdef WIN32
 #include <windows.h>
 #endif
+#ifdef DARWIN
+#include <IOKit/pwr_mgt/IOPMLib.h>
+#endif
 #include <webapp.h>
 
 #define BUFFER_LEN 19200 /* max buffer_len = 192kHz*2ch*25ms*2frames */
@@ -1601,6 +1604,21 @@ static int slaudio_init(void)
 	/* Activate windows low latency timer */
 	timeBeginPeriod(1);
 #endif
+
+#ifdef DARWIN
+	/* Prevent IdleSleep - usefull for backup applications
+	/* IOPMAssertionCreateWithName limits the string to 128 characters. */
+	CFStringRef reasonForActivity = CFSTR("Studio Link - Audio");
+	IOPMAssertionID assertionID;
+
+	if (kIOReturnSuccess ==
+	    IOPMAssertionCreateWithName(
+		    kIOPMAssertionTypeNoIdleSleep, kIOPMAssertionLevelOn,
+		    reasonForActivity, &assertionID))
+		warning("macOS suspend prevent active\n");
+	else
+		warning("macOS suspend prevent failed\n");
+#endif
 	info("slaudio ready\n");
 
 	return err;

From 2f9a15be89e11d98e127736b1d73e6f14abf511b Mon Sep 17 00:00:00 2001
From: Sebastian Reimers <hallo@studio-link.de>
Date: Wed, 7 Sep 2022 08:16:12 +0200
Subject: [PATCH 2/3] use kIOPMAssertionTypeNoDisplaySleep

---
 src/modules/slaudio/slaudio.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/modules/slaudio/slaudio.c b/src/modules/slaudio/slaudio.c
index 732cc50..cc9872f 100644
--- a/src/modules/slaudio/slaudio.c
+++ b/src/modules/slaudio/slaudio.c
@@ -1613,7 +1613,7 @@ static int slaudio_init(void)
 
 	if (kIOReturnSuccess ==
 	    IOPMAssertionCreateWithName(
-		    kIOPMAssertionTypeNoIdleSleep, kIOPMAssertionLevelOn,
+		    kIOPMAssertionTypeNoDisplaySleep, kIOPMAssertionLevelOn,
 		    reasonForActivity, &assertionID))
 		warning("macOS suspend prevent active\n");
 	else

From 04ec4bd7a7f8d0fec8e610be234193e5906fd241 Mon Sep 17 00:00:00 2001
From: Sebastian Reimers <hallo@studio-link.de>
Date: Wed, 7 Sep 2022 08:43:52 +0200
Subject: [PATCH 3/3] fix comment

---
 src/modules/slaudio/slaudio.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/modules/slaudio/slaudio.c b/src/modules/slaudio/slaudio.c
index cc9872f..d7e52f2 100644
--- a/src/modules/slaudio/slaudio.c
+++ b/src/modules/slaudio/slaudio.c
@@ -1606,7 +1606,7 @@ static int slaudio_init(void)
 #endif
 
 #ifdef DARWIN
-	/* Prevent IdleSleep - usefull for backup applications
+	/* Prevent DisplaySleep - usefull for backup applications
 	/* IOPMAssertionCreateWithName limits the string to 128 characters. */
 	CFStringRef reasonForActivity = CFSTR("Studio Link - Audio");
 	IOPMAssertionID assertionID;