macosx: implemented A->B Loop (close #5187)

modules/gui/macosx/CoreInteraction.h

@@ -27,6 +27,7 @@
 
 @interface VLCCoreInteraction : NSObject {
     int i_currentPlaybackRate;
+    mtime_t timeA, timeB;
 }
 + (VLCCoreInteraction *)sharedInstance;
 @property (readwrite) int volume;
@@ -61,6 +62,8 @@
 - (void)repeatAll;
 - (void)repeatOff;
 - (void)shuffle;
+- (void)setAtoB;
+- (void)updateAtoB;
 
 - (void)volumeUp;
 - (void)volumeDown;

modules/gui/macosx/CoreInteraction.m

@@ -417,6 +417,39 @@ static VLCCoreInteraction *_o_sharedInstance = nil;
     }
 }
 
+- (void)setAtoB
+{
+    if (!timeA) {
+        input_thread_t * p_input = pl_CurrentInput(VLCIntf);
+        if (p_input) {
+            timeA = var_GetTime(p_input, "time");
+            vlc_object_release(p_input);
+        }
+    } else if (!timeB) {
+        input_thread_t * p_input = pl_CurrentInput(VLCIntf);
+        if (p_input) {
+            timeB = var_GetTime(p_input, "time");
+            vlc_object_release(p_input);
+        }
+    } else {
+        timeA = 0;
+        timeB = 0;
+    }
+}
+
+- (void)updateAtoB
+{
+    if (timeB) {
+        input_thread_t * p_input = pl_CurrentInput(VLCIntf);
+        if (p_input) {
+            mtime_t currentTime = var_GetTime(p_input, "time");
+            if ( currentTime >= timeB || currentTime < timeA)
+                var_SetTime(p_input, "time", timeA);
+            vlc_object_release(p_input);
+        }
+    }
+}
+
 - (void)volumeUp
 {
     intf_thread_t *p_intf = VLCIntf;

modules/gui/macosx/MainMenu.h

@@ -102,6 +102,7 @@
     IBOutlet NSMenuItem * o_mi_random;
     IBOutlet NSMenuItem * o_mi_repeat;
     IBOutlet NSMenuItem * o_mi_loop;
+    IBOutlet NSMenuItem * o_mi_AtoBloop;
     IBOutlet NSMenuItem * o_mi_quitAfterPB;
     IBOutlet NSMenuItem * o_mi_fwd;
     IBOutlet NSMenuItem * o_mi_bwd;
@@ -231,6 +232,7 @@
 - (void)updateRecordState:(BOOL)b_value;
 - (IBAction)setPlaybackRate:(id)sender;
 - (void)updatePlaybackRate;
+- (IBAction)toggleAtoBloop:(id)sender;
 
 - (IBAction)toggleFullscreen:(id)sender;
 - (IBAction)resizeVideoWindow:(id)sender;

modules/gui/macosx/MainMenu.m

@@ -320,6 +320,7 @@ static VLCMainMenu *_o_sharedInstance = nil;
     [o_mi_random setTitle: _NS("Random")];
     [o_mi_repeat setTitle: _NS("Repeat One")];
     [o_mi_loop setTitle: _NS("Repeat All")];
+    [o_mi_AtoBloop setTitle: _NS("A→B Loop")];
     [o_mi_quitAfterPB setTitle: _NS("Quit after Playback")];
     [o_mi_fwd setTitle: _NS("Step Forward")];
     [o_mi_bwd setTitle: _NS("Step Backward")];
@@ -693,6 +694,11 @@ static VLCMainMenu *_o_sharedInstance = nil;
     [o_mi_rate_sld setIntValue: i];
 }
 
+- (IBAction)toggleAtoBloop:(id)sender
+{
+    [[VLCCoreInteraction sharedInstance] setAtoB];
+}
+
 #pragma mark -
 #pragma mark video menu
 

modules/gui/macosx/intf.m

@@ -1328,6 +1328,7 @@ static VLCMain *_o_sharedMainInstance = nil;
 - (void)updatePlaybackPosition
 {
     [o_mainwindow updateTimeSlider];
+    [[VLCCoreInteraction sharedInstance] updateAtoB];
 }
 
 - (void)updateVolume