Fix Build Compatibility Issues in XCode 26.4

Replaced Implicit type conversion within mac plugins(mac-capture, mac-syphon, mac-videotoolbox, mac-virtualcam) with Explicit ones to clear compile errors with Apple Clang 21.0 and XCode 26.4.

Author: andrewsoncha

plugins/mac-capture/mac-audio.c

@@ -445,7 +445,7 @@ static OSStatus input_callback(void *data, AudioUnitRenderActionFlags *action_fl
 		factor = ((double)info.numer) / info.denom;
 	}
 	if (info.numer != info.denom)
-		audio.timestamp = (uint64_t)(factor * ts_data->mHostTime);
+		audio.timestamp = (uint64_t)(factor * (double)ts_data->mHostTime);
 	else
 		audio.timestamp = ts_data->mHostTime;
 

plugins/mac-capture/mac-sck-common.m

@@ -278,9 +278,9 @@ bool build_application_list(struct screen_capture *sc, obs_properties_t *props)
                 size_t width = CVPixelBufferGetWidth(image_buffer);
                 size_t height = CVPixelBufferGetHeight(image_buffer);
 
-                if ((sc->frame.size.width != width) || (sc->frame.size.height != height)) {
-                    sc->frame.size.width = width;
-                    sc->frame.size.height = height;
+                if (((size_t)sc->frame.size.width != width) || ((size_t)sc->frame.size.height != height)) {
+                    sc->frame.size.width = (CGFloat)width;
+                    sc->frame.size.height = (CGFloat)height;
                     needs_to_update_properties = true;
                 }
             }

plugins/mac-syphon/syphon.m

@@ -632,7 +632,7 @@ static void syphon_video_tick(void *data, float seconds)
 
     obs_enter_graphics();
     build_sprite_rect(gs_vertexbuffer_get_data(s->vertbuffer), (float) crop->origin.x,
-                      s->height - (float) crop->origin.y, s->width - (float) crop->size.width,
+                      (float) s->height - (float) crop->origin.y, (float) s->width - (float) crop->size.width,
                       (float) crop->size.height);
     obs_leave_graphics();
 }

plugins/mac-videotoolbox/encoder.c

@@ -539,8 +539,8 @@ static OSStatus create_encoder(struct vt_encoder *enc)
 					     kVTCompressionPropertyKey_AllowFrameReordering,
 					     kVTCompressionPropertyKey_ProfileLevel};
 
-		SInt32 key_frame_interval = (SInt32)(enc->keyint * ((float)enc->fps_num / enc->fps_den));
-		float expected_framerate = (float)enc->fps_num / enc->fps_den;
+		SInt32 key_frame_interval = (SInt32)((float)enc->keyint * ((float)enc->fps_num / (float)enc->fps_den));
+		float expected_framerate = (float)enc->fps_num / (float)enc->fps_den;
 		CFNumberRef MaxKeyFrameInterval =
 			CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &key_frame_interval);
 		CFNumberRef ExpectedFrameRate =

plugins/mac-virtualcam/src/dal-plugin/CMSampleBufferUtils.mm

@@ -19,7 +19,7 @@ CMSampleTimingInfo CMSampleTimingInfoForTimestamp(uint64_t timestampNanos, uint3
     CMTimeScale scale = 600;
     CMSampleTimingInfo timing;
     timing.duration = CMTimeMake(fpsDenominator * scale, fpsNumerator * scale);
-    timing.presentationTimeStamp = CMTimeMakeWithSeconds(timestampNanos / (double) NSEC_PER_SEC, scale);
+    timing.presentationTimeStamp = CMTimeMakeWithSeconds((double)timestampNanos / (double) NSEC_PER_SEC, scale);
     timing.decodeTimeStamp = kCMTimeInvalid;
     return timing;
 }

plugins/mac-virtualcam/src/dal-plugin/OBSDALStream.mm

@@ -128,7 +128,7 @@ - (NSSize)testCardSize
         if (width == 0 || height == 0) {
             _testCardSize = NSMakeSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);
         } else {
-            _testCardSize = NSMakeSize(width, height);
+            _testCardSize = NSMakeSize((double)width, (double)height);
         }
     }
     return _testCardSize;
@@ -240,7 +240,7 @@ - (CVPixelBufferRef)createPixelBufferWithTestAnimation
     CGColorSpaceRef rgbColorSpace = CGColorSpaceCreateDeviceRGB();
     CGContextRef context = CGBitmapContextCreate(pxdata, width, height, 8,
                                                  CVPixelBufferGetBytesPerRowOfPlane(pxbuffer, 0), rgbColorSpace,
-                                                 kCGImageAlphaPremultipliedFirst | kCGImageByteOrder32Big);
+                                                 ((int)kCGImageAlphaPremultipliedFirst) | ((int)kCGImageByteOrder32Big));
     CFRelease(rgbColorSpace);
     NSParameterAssert(context);
 
@@ -249,7 +249,7 @@ - (CVPixelBufferRef)createPixelBufferWithTestAnimation
 
     NSRect rect = NSMakeRect(0, 0, self.testCardImage.size.width, self.testCardImage.size.height);
     CGImageRef image = [self.testCardImage CGImageForProposedRect:&rect context:nsContext hints:nil];
-    CGContextDrawImage(context, CGRectMake(0, 0, CGImageGetWidth(image), CGImageGetHeight(image)), image);
+    CGContextDrawImage(context, CGRectMake(0, 0, (double)CGImageGetWidth(image), (double)CGImageGetHeight(image)), image);
 
     //	DrawDialWithFrame(
     //		NSMakeRect(0, 0, width, height),