* Use asynchronous bitmap drawing in VideoView. Wouldn't matter much, though.

* In SubtitleBitmap, if we ever take too long to generate a subtitle bitmap
   with the drop-shadow, fall back to outline mode. The StackBlurFilter is
   extremely fast, though, so there isn't a huge difference. It can fix some
   jumps in the video when switching subtitles in fullscreen mode, though.
 * Introduce overlay mode to SubpixelBitmap. It uses the black outline then
   and disables font anti-aliasing (just for the outline).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38833 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/apps/mediaplayer/VideoView.cpp

@@ -157,7 +157,7 @@ VideoView::SetBitmap(const BBitmap* bitmap)
 					FillRect(fVideoFrame, B_SOLID_LOW);
 					Sync();
 					// use overlay from here on
-					fOverlayMode = true;
+					_SetOverlayMode(true);
 
 					// update restrictions
 					overlay_restrictions restrictions;
@@ -180,7 +180,7 @@ VideoView::SetBitmap(const BBitmap* bitmap)
 			}
 		} else if (fOverlayMode
 			&& (bitmap->Flags() & B_BITMAP_WILL_OVERLAY) == 0) {
-			fOverlayMode = false;
+			_SetOverlayMode(false);
 			ClearViewOverlay();
 			SetViewColor(B_TRANSPARENT_COLOR);
 		}
@@ -255,7 +255,7 @@ VideoView::DisableOverlay()
 	ClearViewOverlay();
 	snooze(20000);
 	Sync();
-	fOverlayMode = false;
+	_SetOverlayMode(false);
 }
 
 
@@ -315,7 +315,7 @@ VideoView::_DrawBitmap(const BBitmap* bitmap)
 {
 	SetDrawingMode(B_OP_COPY);
 	uint32 options = fUseBilinearScaling ? B_FILTER_BITMAP_BILINEAR : 0;
-	DrawBitmap(bitmap, bitmap->Bounds(), fVideoFrame, options);
+	DrawBitmapAsync(bitmap, bitmap->Bounds(), fVideoFrame, options);
 
 	if (fHasSubtitle) {
 		SetDrawingMode(B_OP_ALPHA);
@@ -326,7 +326,7 @@ VideoView::_DrawBitmap(const BBitmap* bitmap)
 		offset.x = (fVideoFrame.left + fVideoFrame.right
 			- subtitleBitmap->Bounds().Width()) / 2;
 		offset.y = fVideoFrame.bottom - subtitleBitmap->Bounds().Height();
-		DrawBitmap(subtitleBitmap, offset);
+		DrawBitmapAsync(subtitleBitmap, offset);
 	}
 }
 
@@ -344,3 +344,12 @@ VideoView::_AdoptGlobalSettings()
 		Invalidate();
 }
 
+
+void
+VideoView::_SetOverlayMode(bool overlayMode)
+{
+	fOverlayMode = overlayMode;
+	fSubtitleBitmap->SetOverlayMode(overlayMode);
+}
+
+

src/apps/mediaplayer/VideoView.h

@@ -56,6 +56,7 @@ public:
 private:
 			void				_DrawBitmap(const BBitmap* bitmap);
 			void				_AdoptGlobalSettings();
+			void				_SetOverlayMode(bool overlayMode);
 
 private:
 			BRect				fVideoFrame;

src/apps/mediaplayer/interface/SubtitleBitmap.cpp

@@ -18,7 +18,9 @@ SubtitleBitmap::SubtitleBitmap()
 	:
 	fBitmap(NULL),
 	fTextView(new BTextView("offscreen text")),
-	fShadowTextView(new BTextView("offscreen text shadow"))
+	fShadowTextView(new BTextView("offscreen text shadow")),
+	fUseSoftShadow(true),
+	fOverlayMode(false)
 {
 	fTextView->SetStylable(true);
 	fTextView->MakeEditable(false);
@@ -60,6 +62,19 @@ SubtitleBitmap::SetVideoBounds(BRect bounds)
 
 	fVideoBounds = bounds;
 
+	fUseSoftShadow = true;
+	_GenerateBitmap();
+}
+
+
+void
+SubtitleBitmap::SetOverlayMode(bool overlayMode)
+{
+	if (overlayMode == fOverlayMode)
+		return;
+
+	fOverlayMode = overlayMode;
+
 	_GenerateBitmap();
 }
 
@@ -81,13 +96,15 @@ SubtitleBitmap::_GenerateBitmap()
 
 	BRect bounds;
 	float outlineRadius;
-	_InsertText(bounds, outlineRadius);
+	_InsertText(bounds, outlineRadius, fOverlayMode);
+
+	bigtime_t startTime = 0;
+	if (!fOverlayMode && fUseSoftShadow)
+		startTime = system_time();
 
 	fBitmap = new BBitmap(bounds, B_BITMAP_ACCEPTS_VIEWS, B_RGBA32);
 	memset(fBitmap->Bits(), 0, fBitmap->BitsLength());
 
-	StackBlurFilter filter;
-
 	if (fBitmap->Lock()) {
 		fBitmap->AddChild(fShadowTextView);
 		fShadowTextView->ResizeTo(bounds.Width(), bounds.Height());
@@ -100,14 +117,20 @@ SubtitleBitmap::_GenerateBitmap()
 		fShadowTextView->Draw(bounds);
 		fShadowTextView->PopState();
 
-		fShadowTextView->Sync();
-		fShadowTextView->RemoveSelf();
+		if (!fOverlayMode && fUseSoftShadow) {
+			fShadowTextView->Sync();
+			StackBlurFilter filter;
+			filter.Filter(fBitmap, outlineRadius * 2);
+		}
 
-		filter.Filter(fBitmap, outlineRadius * 2);
+		fShadowTextView->RemoveSelf();
 
 		fBitmap->AddChild(fTextView);
 		fTextView->ResizeTo(bounds.Width(), bounds.Height());
-		fTextView->MoveTo(-outlineRadius / 2, -outlineRadius / 2);
+		if (!fOverlayMode && fUseSoftShadow)
+			fTextView->MoveTo(-outlineRadius / 2, -outlineRadius / 2);
+		else
+			fTextView->MoveTo(0, 0);
 
 		fTextView->SetViewColor(0, 0, 0, 0);
 		fTextView->SetDrawingMode(B_OP_ALPHA);
@@ -122,6 +145,9 @@ SubtitleBitmap::_GenerateBitmap()
 
 		fBitmap->Unlock();
 	}
+
+	if (!fOverlayMode && fUseSoftShadow && system_time() - startTime > 10000)
+		fUseSoftShadow = false;
 }
 
 
@@ -283,7 +309,8 @@ parse_text(const BString& string, BTextView* textView, const BFont& font,
 
 
 void
-SubtitleBitmap::_InsertText(BRect& textRect, float& outlineRadius)
+SubtitleBitmap::_InsertText(BRect& textRect, float& outlineRadius,
+	bool overlayMode)
 {
 	BFont font(be_plain_font);
 	float fontSize = ceilf((fVideoBounds.Width() * 0.9) / 36);
@@ -312,6 +339,7 @@ SubtitleBitmap::_InsertText(BRect& textRect, float& outlineRadius)
 	parse_text(fText, fTextView, font, color, true);
 
 	font.SetFalseBoldWidth(outlineRadius);
+	fShadowTextView->ForceFontAliasing(overlayMode);
 	fShadowTextView->SetText(NULL);
 	fShadowTextView->SetFontAndColor(&font, B_FONT_ALL, &shadow);
 

src/apps/mediaplayer/interface/SubtitleBitmap.h

@@ -21,13 +21,14 @@ public:
 
 			void				SetText(const char* text);
 			void				SetVideoBounds(BRect bounds);
+			void				SetOverlayMode(bool overlayMode);
 
 			const BBitmap*		Bitmap() const;
 
 private:
 			void				_GenerateBitmap();
 			void				_InsertText(BRect& bounds,
-									float& outlineRadius);
+									float& outlineRadius, bool overlayMode);
 
 private:
 			BBitmap*			fBitmap;
@@ -36,6 +37,8 @@ private:
 			BString				fText;
 
 			BRect				fVideoBounds;
+			bool				fUseSoftShadow;
+			bool				fOverlayMode;
 };