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b49de93b33
Allows for reference counting of images before disposal. This will allow multiple callers to hold a reference to an image and dispose of their reference without disposing the underlying image until all handles have been disposed. This will be used by the framework to help resolve some of the kludge I was trying to introduce in flutter/flutter#64582
52 lines
1.4 KiB
C++
52 lines
1.4 KiB
C++
// Copyright 2013 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef FLUTTER_LIB_UI_PAINTING_SINGLE_FRAME_CODEC_H_
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#define FLUTTER_LIB_UI_PAINTING_SINGLE_FRAME_CODEC_H_
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#include "flutter/fml/macros.h"
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#include "flutter/lib/ui/painting/codec.h"
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#include "flutter/lib/ui/painting/image.h"
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#include "flutter/lib/ui/painting/image_decoder.h"
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#include "flutter/lib/ui/painting/image_descriptor.h"
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namespace flutter {
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class SingleFrameCodec : public Codec {
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public:
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SingleFrameCodec(fml::RefPtr<ImageDescriptor> descriptor,
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uint32_t target_width,
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uint32_t target_height);
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~SingleFrameCodec() override;
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// |Codec|
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int frameCount() const override;
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// |Codec|
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int repetitionCount() const override;
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// |Codec|
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Dart_Handle getNextFrame(Dart_Handle args) override;
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// |DartWrappable|
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size_t GetAllocationSize() const override;
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private:
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enum class Status { kNew, kInProgress, kComplete };
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Status status_;
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fml::RefPtr<ImageDescriptor> descriptor_;
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uint32_t target_width_;
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uint32_t target_height_;
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fml::RefPtr<CanvasImage> cached_image_;
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std::vector<DartPersistentValue> pending_callbacks_;
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FML_FRIEND_MAKE_REF_COUNTED(SingleFrameCodec);
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FML_FRIEND_REF_COUNTED_THREAD_SAFE(SingleFrameCodec);
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};
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} // namespace flutter
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#endif // FLUTTER_LIB_UI_PAINTING_SINGLE_FRAME_CODEC_H_
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