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-rw-r--r--image/ImageOps.cpp150
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diff --git a/image/ImageOps.cpp b/image/ImageOps.cpp
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+++ b/image/ImageOps.cpp
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+/* -*- Mode: C++; tab-width: 2; 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 "ImageOps.h"
+
+#include "ClippedImage.h"
+#include "DecodePool.h"
+#include "Decoder.h"
+#include "DecoderFactory.h"
+#include "DynamicImage.h"
+#include "FrozenImage.h"
+#include "IDecodingTask.h"
+#include "Image.h"
+#include "imgIContainer.h"
+#include "mozilla/gfx/2D.h"
+#include "nsStreamUtils.h"
+#include "OrientedImage.h"
+#include "SourceBuffer.h"
+
+using namespace mozilla::gfx;
+
+namespace mozilla {
+namespace image {
+
+/* static */ already_AddRefed<Image>
+ImageOps::Freeze(Image* aImage)
+{
+ RefPtr<Image> frozenImage = new FrozenImage(aImage);
+ return frozenImage.forget();
+}
+
+/* static */ already_AddRefed<imgIContainer>
+ImageOps::Freeze(imgIContainer* aImage)
+{
+ nsCOMPtr<imgIContainer> frozenImage =
+ new FrozenImage(static_cast<Image*>(aImage));
+ return frozenImage.forget();
+}
+
+/* static */ already_AddRefed<Image>
+ImageOps::Clip(Image* aImage, nsIntRect aClip,
+ const Maybe<nsSize>& aSVGViewportSize)
+{
+ RefPtr<Image> clippedImage = new ClippedImage(aImage, aClip, aSVGViewportSize);
+ return clippedImage.forget();
+}
+
+/* static */ already_AddRefed<imgIContainer>
+ImageOps::Clip(imgIContainer* aImage, nsIntRect aClip,
+ const Maybe<nsSize>& aSVGViewportSize)
+{
+ nsCOMPtr<imgIContainer> clippedImage =
+ new ClippedImage(static_cast<Image*>(aImage), aClip, aSVGViewportSize);
+ return clippedImage.forget();
+}
+
+/* static */ already_AddRefed<Image>
+ImageOps::Orient(Image* aImage, Orientation aOrientation)
+{
+ RefPtr<Image> orientedImage = new OrientedImage(aImage, aOrientation);
+ return orientedImage.forget();
+}
+
+/* static */ already_AddRefed<imgIContainer>
+ImageOps::Orient(imgIContainer* aImage, Orientation aOrientation)
+{
+ nsCOMPtr<imgIContainer> orientedImage =
+ new OrientedImage(static_cast<Image*>(aImage), aOrientation);
+ return orientedImage.forget();
+}
+
+/* static */ already_AddRefed<imgIContainer>
+ImageOps::CreateFromDrawable(gfxDrawable* aDrawable)
+{
+ nsCOMPtr<imgIContainer> drawableImage = new DynamicImage(aDrawable);
+ return drawableImage.forget();
+}
+
+/* static */ already_AddRefed<gfx::SourceSurface>
+ImageOps::DecodeToSurface(nsIInputStream* aInputStream,
+ const nsACString& aMimeType,
+ uint32_t aFlags)
+{
+ MOZ_ASSERT(aInputStream);
+
+ nsresult rv;
+
+ // Prepare the input stream.
+ nsCOMPtr<nsIInputStream> inputStream = aInputStream;
+ if (!NS_InputStreamIsBuffered(aInputStream)) {
+ nsCOMPtr<nsIInputStream> bufStream;
+ rv = NS_NewBufferedInputStream(getter_AddRefs(bufStream),
+ aInputStream, 1024);
+ if (NS_SUCCEEDED(rv)) {
+ inputStream = bufStream;
+ }
+ }
+
+ // Figure out how much data we've been passed.
+ uint64_t length;
+ rv = inputStream->Available(&length);
+ if (NS_FAILED(rv) || length > UINT32_MAX) {
+ return nullptr;
+ }
+
+ // Write the data into a SourceBuffer.
+ NotNull<RefPtr<SourceBuffer>> sourceBuffer = WrapNotNull(new SourceBuffer());
+ sourceBuffer->ExpectLength(length);
+ rv = sourceBuffer->AppendFromInputStream(inputStream, length);
+ if (NS_FAILED(rv)) {
+ return nullptr;
+ }
+ sourceBuffer->Complete(NS_OK);
+
+ // Create a decoder.
+ DecoderType decoderType =
+ DecoderFactory::GetDecoderType(PromiseFlatCString(aMimeType).get());
+ RefPtr<Decoder> decoder =
+ DecoderFactory::CreateAnonymousDecoder(decoderType, sourceBuffer,
+ Nothing(), ToSurfaceFlags(aFlags));
+ if (!decoder) {
+ return nullptr;
+ }
+
+ // Run the decoder synchronously.
+ RefPtr<IDecodingTask> task = new AnonymousDecodingTask(WrapNotNull(decoder));
+ task->Run();
+ if (!decoder->GetDecodeDone() || decoder->HasError()) {
+ return nullptr;
+ }
+
+ // Pull out the surface.
+ RawAccessFrameRef frame = decoder->GetCurrentFrameRef();
+ if (!frame) {
+ return nullptr;
+ }
+
+ RefPtr<SourceSurface> surface = frame->GetSourceSurface();
+ if (!surface) {
+ return nullptr;
+ }
+
+ return surface.forget();
+}
+
+} // namespace image
+} // namespace mozilla