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authorSteve Block <steveblock@google.com>2011-05-13 06:44:40 -0700
committerAndroid (Google) Code Review <android-gerrit@google.com>2011-05-13 06:44:40 -0700
commit08014c20784f3db5df3a89b73cce46037b77eb59 (patch)
tree47749210d31e19e6e2f64036fa8fae2ad693476f /Source/WebCore/html/canvas/ArrayBufferView.cpp
parent860220379e56aeb66424861ad602b07ee22b4055 (diff)
parent4c3661f7918f8b3f139f824efb7855bedccb4c94 (diff)
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Merge changes Ide388898,Ic49f367c,I1158a808,Iacb6ca5d,I2100dd3a,I5c1abe54,Ib0ef9902,I31dbc523,I570314b3
* changes: Merge WebKit at r75315: Update WebKit version Merge WebKit at r75315: Add FrameLoaderClient PageCache stubs Merge WebKit at r75315: Stub out AXObjectCache::remove() Merge WebKit at r75315: Fix ImageBuffer Merge WebKit at r75315: Fix PluginData::initPlugins() Merge WebKit at r75315: Fix conflicts Merge WebKit at r75315: Fix Makefiles Merge WebKit at r75315: Move Android-specific WebCore files to Source Merge WebKit at r75315: Initial merge by git.
Diffstat (limited to 'Source/WebCore/html/canvas/ArrayBufferView.cpp')
-rw-r--r--Source/WebCore/html/canvas/ArrayBufferView.cpp109
1 files changed, 109 insertions, 0 deletions
diff --git a/Source/WebCore/html/canvas/ArrayBufferView.cpp b/Source/WebCore/html/canvas/ArrayBufferView.cpp
new file mode 100644
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+++ b/Source/WebCore/html/canvas/ArrayBufferView.cpp
@@ -0,0 +1,109 @@
+/*
+ * Copyright (C) 2009 Apple Inc. 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.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * 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"
+
+#if ENABLE(3D_CANVAS) || ENABLE(BLOB)
+
+#include "ArrayBufferView.h"
+
+#include "ArrayBuffer.h"
+
+namespace WebCore {
+
+ArrayBufferView::ArrayBufferView(PassRefPtr<ArrayBuffer> buffer,
+ unsigned byteOffset)
+ : m_byteOffset(byteOffset)
+ , m_buffer(buffer)
+{
+ m_baseAddress = m_buffer ? (static_cast<char*>(m_buffer->data()) + m_byteOffset) : 0;
+}
+
+ArrayBufferView::~ArrayBufferView()
+{
+}
+
+void ArrayBufferView::setImpl(ArrayBufferView* array, unsigned byteOffset, ExceptionCode& ec)
+{
+ if (byteOffset > byteLength()
+ || byteOffset + array->byteLength() > byteLength()
+ || byteOffset + array->byteLength() < byteOffset) {
+ // Out of range offset or overflow
+ ec = INDEX_SIZE_ERR;
+ return;
+ }
+
+ char* base = static_cast<char*>(baseAddress());
+ memmove(base + byteOffset, array->baseAddress(), array->byteLength());
+}
+
+void ArrayBufferView::setRangeImpl(const char* data, size_t dataByteLength, unsigned byteOffset, ExceptionCode& ec)
+{
+ if (byteOffset > byteLength()
+ || byteOffset + dataByteLength > byteLength()
+ || byteOffset + dataByteLength < byteOffset) {
+ // Out of range offset or overflow
+ ec = INDEX_SIZE_ERR;
+ return;
+ }
+
+ char* base = static_cast<char*>(baseAddress());
+ memmove(base + byteOffset, data, dataByteLength);
+}
+
+void ArrayBufferView::zeroRangeImpl(unsigned byteOffset, size_t rangeByteLength, ExceptionCode& ec)
+{
+ if (byteOffset > byteLength()
+ || byteOffset + rangeByteLength > byteLength()
+ || byteOffset + rangeByteLength < byteOffset) {
+ // Out of range offset or overflow
+ ec = INDEX_SIZE_ERR;
+ return;
+ }
+
+ char* base = static_cast<char*>(baseAddress());
+ memset(base + byteOffset, 0, rangeByteLength);
+}
+
+void ArrayBufferView::calculateOffsetAndLength(int start, int end, unsigned arraySize,
+ unsigned* offset, unsigned* length)
+{
+ if (start < 0)
+ start += arraySize;
+ if (start < 0)
+ start = 0;
+ if (end < 0)
+ end += arraySize;
+ if (end < 0)
+ end = 0;
+ if (end < start)
+ end = start;
+ *offset = static_cast<unsigned>(start);
+ *length = static_cast<unsigned>(end - start);
+}
+
+}
+
+#endif // ENABLE(3D_CANVAS) || ENABLE(BLOB)