moved sleep prevention code for further abstraction, implemented macOS

CMakeLists.txt

@@ -156,6 +156,10 @@ else()
   endif()
 endif()
 
+if (APPLE)
+  list(APPEND OLIVE_LIBRARIES "-framework IOKit")
+endif()
+
 # Generate Git hash
 set(PROJECT_LONG_VERSION ${PROJECT_VERSION})
 if(EXISTS "${CMAKE_SOURCE_DIR}/.git")

app/widget/viewer/CMakeLists.txt

@@ -26,6 +26,8 @@ set(OLIVE_SOURCES
   widget/viewer/viewerdisplay.h
   widget/viewer/viewerplaybacktimer.cpp
   widget/viewer/viewerplaybacktimer.h
+  widget/viewer/viewerpreventsleep.cpp
+  widget/viewer/viewerpreventsleep.h
   widget/viewer/viewerqueue.h
   widget/viewer/viewersafemargininfo.h
   widget/viewer/viewersizer.cpp

app/widget/viewer/viewer.cpp

@@ -30,10 +30,6 @@
 #include <QtMath>
 #include <QVBoxLayout>
 
-#ifdef _WIN32
-#include "winbase.h"
-#endif
-
 #include "audio/audiomanager.h"
 #include "common/clamp.h"
 #include "common/power.h"
@@ -44,6 +40,7 @@
 #include "node/project/project.h"
 #include "render/rendermanager.h"
 #include "task/taskmanager.h"
+#include "viewerpreventsleep.h"
 #include "widget/menu/menu.h"
 #include "window/mainwindow/mainwindow.h"
 
@@ -707,9 +704,7 @@ void ViewerWidget::PlayInternal(int speed, bool in_to_out_only)
     }
   }
   // Force screen to stay awake
-#ifdef _WIN32
-  SetThreadExecutionState(ES_DISPLAY_REQUIRED | ES_CONTINUOUS);
-#endif
+  PreventSleep(true);
 }
 
 void ViewerWidget::PauseInternal()
@@ -752,9 +747,7 @@ void ViewerWidget::PauseInternal()
   prequeuing_audio_ = 0;
 
   // Reset screen timeout timer
-#ifdef _WIN32
-  SetThreadExecutionState(ES_CONTINUOUS);
-#endif
+  PreventSleep(false);
 }
 
 void ViewerWidget::PushScrubbedAudio()

app/widget/viewer/viewerpreventsleep.cpp

@@ -0,0 +1,34 @@
+#include "viewerpreventsleep.h"
+
+#include <QtGlobal>
+
+#if defined(Q_OS_WINDOWS)
+#include <winbase.h>
+#elif defined(Q_OS_MAC)
+#include <IOKit/pwr_mgt/IOPMLib.h>
+#endif
+
+namespace olive {
+
+#if defined(Q_OS_MAC)
+IOPMAssertionID assertionID = 0;
+#endif
+
+void PreventSleep(bool on)
+{
+#if defined(Q_OS_WINDOWS)
+  SetThreadExecutionState(on ? ES_DISPLAY_REQUIRED | ES_CONTINUOUS : ES_CONTINUOUS);
+#elif defined(Q_OS_MAC)
+  if (on) {
+    static const CFStringRef reasonForActivity = CFSTR("Video Playback");
+
+    IOPMAssertionCreateWithName(kIOPMAssertionTypeNoDisplaySleep,
+                                kIOPMAssertionLevelOn, reasonForActivity, &assertionID);
+  } else if (assertionID) {
+    IOPMAssertionRelease(assertionID);
+    assertionID = 0;
+  }
+#endif
+}
+
+}

app/widget/viewer/viewerpreventsleep.h

@@ -0,0 +1,10 @@
+#ifndef VIEWERPREVENTSLEEP_H
+#define VIEWERPREVENTSLEEP_H
+
+namespace olive {
+
+void PreventSleep(bool on);
+
+}
+
+#endif // VIEWERPREVENTSLEEP_H