Index: third_party/WebKit/Source/platform/graphics/TextureHolder.h |
diff --git a/third_party/WebKit/Source/platform/graphics/TextureHolder.h b/third_party/WebKit/Source/platform/graphics/TextureHolder.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..19618ebb658d008760510d0aa318476f2c989f14 |
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+++ b/third_party/WebKit/Source/platform/graphics/TextureHolder.h |
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+// Copyright 2016 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#ifndef TextureHolder_h |
+#define TextureHolder_h |
+ |
+#include "gpu/command_buffer/common/mailbox.h" |
+#include "gpu/command_buffer/common/sync_token.h" |
+#include "platform/PlatformExport.h" |
+#include "platform/WebTaskRunner.h" |
+#include "platform/geometry/IntSize.h" |
+#include "platform/graphics/Image.h" |
+#include "third_party/skia/include/core/SkImage.h" |
+#include "third_party/skia/include/core/SkRefCnt.h" |
+ |
+namespace blink { |
+ |
+class PLATFORM_EXPORT TextureHolder { |
+ public: |
+ virtual ~TextureHolder() {} |
+ |
+ // Methods overrided by all sub-classes |
+ virtual bool isSkiaTextureHolder() = 0; |
+ virtual bool isMailboxTextureHolder() = 0; |
+ virtual unsigned sharedContextId() = 0; |
+ virtual IntSize size() const = 0; |
+ virtual bool currentFrameKnownToBeOpaque(Image::MetadataMode) = 0; |
+ |
+ // Methods overrided by MailboxTextureHolder |
+ virtual gpu::Mailbox mailbox() { |
+ NOTREACHED(); |
+ return gpu::Mailbox(); |
+ } |
+ virtual gpu::SyncToken syncToken() { |
+ NOTREACHED(); |
+ return gpu::SyncToken(); |
+ } |
+ virtual void updateSyncToken(gpu::SyncToken) { NOTREACHED(); } |
+ |
+ // Methods overrided by SkiaTextureHolder |
+ virtual sk_sp<SkImage> skImage() { |
+ NOTREACHED(); |
+ return nullptr; |
+ } |
+ virtual void setSharedContextId(unsigned) { NOTREACHED(); } |
+ virtual void setImageThread(WebThread*) { NOTREACHED(); } |
+ virtual void setImageThreadTaskRunner(std::unique_ptr<WebTaskRunner>) { |
+ NOTREACHED(); |
+ } |
+ |
+ // Methods that have exactly the same impelmentation for all sub-classes |
+ bool wasTransferred() { return m_wasTransferred; } |
+ WebTaskRunner* textureThreadTaskRunner() { |
+ return m_textureThreadTaskRunner.get(); |
+ } |
+ void setWasTransferred(bool flag) { m_wasTransferred = flag; } |
+ void setTextureThreadTaskRunner(std::unique_ptr<WebTaskRunner> taskRunner) { |
+ m_textureThreadTaskRunner = std::move(taskRunner); |
+ } |
+ |
+ private: |
+ // Wether the AcceleratedStaticBitmapImage that holds the |m_texture| was |
+ // transferred to another thread or not. Set to false when the |
+ // AcceleratedStaticBitmapImage remain on the same thread as it was craeted. |
+ bool m_wasTransferred = false; |
+ // Keep a clone of the WebTaskRunner. This is to handle the case where the |
+ // AcceleratedStaticBitmapImage was created on one thread and transferred to |
+ // another thread, and the original thread gone out of scope, and that we need |
+ // to clear the resouces associated with that AcceleratedStaticBitmapImage on |
+ // the original thread. |
+ std::unique_ptr<WebTaskRunner> m_textureThreadTaskRunner; |
+}; |
+ |
+} // namespace blink |
+ |
+#endif // TextureHolder_h |