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-rw-r--r--gfx/2d/SourceSurfaceRawData.cpp81
1 files changed, 81 insertions, 0 deletions
diff --git a/gfx/2d/SourceSurfaceRawData.cpp b/gfx/2d/SourceSurfaceRawData.cpp
new file mode 100644
index 000000000..9d95e9900
--- /dev/null
+++ b/gfx/2d/SourceSurfaceRawData.cpp
@@ -0,0 +1,81 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "SourceSurfaceRawData.h"
+
+#include "DataSurfaceHelpers.h"
+#include "Logging.h"
+#include "mozilla/Types.h" // for decltype
+
+namespace mozilla {
+namespace gfx {
+
+void
+SourceSurfaceRawData::InitWrappingData(uint8_t *aData,
+ const IntSize &aSize,
+ int32_t aStride,
+ SurfaceFormat aFormat,
+ Factory::SourceSurfaceDeallocator aDeallocator,
+ void* aClosure)
+{
+ mRawData = aData;
+ mSize = aSize;
+ mStride = aStride;
+ mFormat = aFormat;
+
+ if (aDeallocator) {
+ mOwnData = true;
+ }
+ mDeallocator = aDeallocator;
+ mClosure = aClosure;
+}
+
+void
+SourceSurfaceRawData::GuaranteePersistance()
+{
+ if (mOwnData) {
+ return;
+ }
+
+ uint8_t* oldData = mRawData;
+ mRawData = new uint8_t[mStride * mSize.height];
+
+ memcpy(mRawData, oldData, mStride * mSize.height);
+ mOwnData = true;
+}
+
+bool
+SourceSurfaceAlignedRawData::Init(const IntSize &aSize,
+ SurfaceFormat aFormat,
+ bool aClearMem,
+ uint8_t aClearValue,
+ int32_t aStride)
+{
+ mFormat = aFormat;
+ mStride = aStride ? aStride : GetAlignedStride<16>(aSize.width, BytesPerPixel(aFormat));
+
+ size_t bufLen = BufferSizeFromStrideAndHeight(mStride, aSize.height);
+ if (bufLen > 0) {
+ bool zeroMem = aClearMem && !aClearValue;
+ static_assert(sizeof(decltype(mArray[0])) == 1,
+ "mArray.Realloc() takes an object count, so its objects must be 1-byte sized if we use bufLen");
+
+ // AlignedArray uses cmalloc to zero mem for a fast path.
+ mArray.Realloc(/* actually an object count */ bufLen, zeroMem);
+ mSize = aSize;
+
+ if (mArray && aClearMem && aClearValue) {
+ memset(mArray, aClearValue, mStride * aSize.height);
+ }
+ } else {
+ mArray.Dealloc();
+ mSize.SizeTo(0, 0);
+ }
+
+ return mArray != nullptr;
+}
+
+} // namespace gfx
+} // namespace mozilla