Break dependency of platform/graphics on html/ImageData.h

Source/core/platform/graphics/GraphicsContext3D.cpp

 /*
  * Copyright (C) 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Google Inc. All rights reserved.
  * Copyright (C) 2010 Mozilla Corporation. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
@@ skipping 11 matching lines @@
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 
 #include "core/platform/graphics/GraphicsContext3D.h"
 
-#include "core/html/ImageData.h"
 #include "core/platform/graphics/Extensions3D.h"
 #include "core/platform/graphics/GraphicsContext.h"
 #include "core/platform/graphics/Image.h"
 #include "core/platform/graphics/ImageBuffer.h"
 #include "core/platform/graphics/ImageObserver.h"
 #include "core/platform/graphics/gpu/DrawingBuffer.h"
 #include "core/platform/image-decoders/ImageDecoder.h"
 #include "platform/CheckedInt.h"
 #include "third_party/skia/include/gpu/GrContext.h"
 #include "third_party/skia/include/gpu/gl/GrGLInterface.h"
@@ skipping 474 matching lines @@
 }
 
 void GraphicsContext3D::paintRenderingResultsToCanvas(ImageBuffer* imageBuffer, DrawingBuffer* drawingBuffer)
 {
     Platform3DObject framebufferId;
     int width, height;
     getDrawingParameters(drawingBuffer, m_impl, &framebufferId, &width, &height);
     paintFramebufferToCanvas(framebufferId, width, height, !getContextAttributes().premultipliedAlpha, imageBuffer);
 }
 
-PassRefPtr<ImageData> GraphicsContext3D::paintRenderingResultsToImageData(DrawingBuffer* drawingBuffer)
+PassRefPtr<Uint8ClampedArray> GraphicsContext3D::paintRenderingResultsToImageData(DrawingBuffer* drawingBuffer, int& width, int& height)
 {
     if (getContextAttributes().premultipliedAlpha)
         return 0;
 
     Platform3DObject framebufferId;
-    int width, height;
     getDrawingParameters(drawingBuffer, m_impl, &framebufferId, &width, &height);
 
-    RefPtr<ImageData> imageData = ImageData::create(IntSize(width, height));
-    unsigned char* pixels = imageData->data()->data();
+    Checked<int, RecordOverflow> dataSize = 4;
+    dataSize *= width;
+    dataSize *= height;
+    if (dataSize.hasOverflowed())
+        return 0;
+
+    RefPtr<Uint8ClampedArray> pixels = Uint8ClampedArray::createUninitialized(width * height * 4);
 
     m_impl->bindFramebuffer(FRAMEBUFFER, framebufferId);
-    readBackFramebuffer(pixels, width, height, ReadbackRGBA, AlphaDoNothing);
-    flipVertically(pixels, width, height);
+    readBackFramebuffer(pixels->data(), width, height, ReadbackRGBA, AlphaDoNothing);
+    flipVertically(pixels->data(), width, height);
 
-    return imageData.release();
+    return pixels.release();
 }
 
 void GraphicsContext3D::readBackFramebuffer(unsigned char* pixels, int width, int height, ReadbackOrder readbackOrder, AlphaOp op)
 {
     if (m_packAlignment > 4)
         m_impl->pixelStorei(PACK_ALIGNMENT, 1);
     m_impl->readPixels(0, 0, width, height, RGBA, UNSIGNED_BYTE, pixels);
     if (m_packAlignment > 4)
         m_impl->pixelStorei(PACK_ALIGNMENT, m_packAlignment);
 
@@ skipping 383 matching lines @@
     for (unsigned i = 0; i < count; i++) {
         uint8* rowA = framebuffer + i * rowBytes;
         uint8* rowB = framebuffer + (height - i - 1) * rowBytes;
         memcpy(scanline, rowB, rowBytes);
         memcpy(rowB, rowA, rowBytes);
         memcpy(rowA, scanline, rowBytes);
     }
 }
 
 } // namespace WebCore