1 files changed, 101 insertions, 0 deletions
diff --git a/skia/sgl/SkBlitter_Sprite.cpp b/skia/sgl/SkBlitter_Sprite.cpp
new file mode 100644
index 0000000..6ce8f13
--- /dev/null
+++ b/skia/sgl/SkBlitter_Sprite.cpp
@@ -0,0 +1,101 @@
+/* libs/graphics/sgl/SkBlitter_Sprite.cpp
+**
+** Copyright 2006, Google Inc.
+**
+** Licensed under the Apache License, Version 2.0 (the "License"); 
+** you may not use this file except in compliance with the License. 
+** You may obtain a copy of the License at 
+**
+**     http://www.apache.org/licenses/LICENSE-2.0 
+**
+** Unless required by applicable law or agreed to in writing, software 
+** distributed under the License is distributed on an "AS IS" BASIS, 
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
+** See the License for the specific language governing permissions and 
+** limitations under the License.
+*/
+
+#include "SkSpriteBlitter.h"
+
+SkSpriteBlitter::SkSpriteBlitter(const SkBitmap& source)
+    : fSource(&source)
+{
+    fSource->lockPixels();
+}
+
+SkSpriteBlitter::~SkSpriteBlitter()
+{
+    fSource->unlockPixels();
+}
+
+void SkSpriteBlitter::setup(const SkBitmap& device, int left, int top,
+                            const SkPaint& paint)
+{
+    fDevice = &device;
+    fLeft = left;
+    fTop = top;
+    fPaint = &paint;
+}
+
+#ifdef SK_DEBUG
+void SkSpriteBlitter::blitH(int x, int y, int width)
+{
+    SkASSERT(!"how did we get here?");
+}
+
+void SkSpriteBlitter::blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[])
+{
+    SkASSERT(!"how did we get here?");
+}
+
+void SkSpriteBlitter::blitV(int x, int y, int height, SkAlpha alpha)
+{
+    SkASSERT(!"how did we get here?");
+}
+
+void SkSpriteBlitter::blitMask(const SkMask&, const SkIRect& clip)
+{
+    SkASSERT(!"how did we get here?");
+}
+#endif
+
+//////////////////////////////////////////////////////////////////////////////////////////////
+//////////////////////////////////////////////////////////////////////////////////////////////
+
+// returning null means the caller will call SkBlitter::Choose() and
+// have wrapped the source bitmap inside a shader
+SkBlitter* SkBlitter::ChooseSprite( const SkBitmap& device,
+                                    const SkPaint& paint,
+                                    const SkBitmap& source,
+                                    int left, int top,
+                                    void* storage, size_t storageSize)
+{
+    /*  We currently ignore antialiasing and filtertype, meaning we will take our
+        special blitters regardless of these settings. Ignoring filtertype seems fine
+        since by definition there is no scale in the matrix. Ignoring antialiasing is
+        a bit of a hack, since we "could" pass in the fractional left/top for the bitmap,
+        and respect that by blending the edges of the bitmap against the device. To support
+        this we could either add more special blitters here, or detect antialiasing in the
+        paint and return null if it is set, forcing the client to take the slow shader case
+        (which does respect soft edges).
+    */
+
+    SkSpriteBlitter* blitter;
+
+    switch (device.getConfig()) {
+    case SkBitmap::kRGB_565_Config:
+        blitter = SkSpriteBlitter::ChooseD16(source, paint, storage, storageSize);
+        break;
+    case SkBitmap::kARGB_8888_Config:
+        blitter = SkSpriteBlitter::ChooseD32(source, paint, storage, storageSize);
+        break;
+    default:
+        blitter = NULL;
+        break;
+    }
+
+    if (blitter)
+        blitter->setup(device, left, top, paint);
+    return blitter;
+}
+