1 | // Copyright 2013 The Flutter Authors. All rights reserved. |
---|---|
2 | // Use of this source code is governed by a BSD-style license that can be |
3 | // found in the LICENSE file. |
4 | |
5 | #ifndef FLUTTER_LIB_UI_PAINTING_SINGLE_FRAME_CODEC_H_ |
6 | #define FLUTTER_LIB_UI_PAINTING_SINGLE_FRAME_CODEC_H_ |
7 | |
8 | #include "flutter/fml/macros.h" |
9 | #include "flutter/lib/ui/painting/codec.h" |
10 | #include "flutter/lib/ui/painting/frame_info.h" |
11 | #include "flutter/lib/ui/painting/image_decoder.h" |
12 | #include "flutter/lib/ui/painting/image_descriptor.h" |
13 | |
14 | namespace flutter { |
15 | |
16 | class SingleFrameCodec : public Codec { |
17 | public: |
18 | SingleFrameCodec(fml::RefPtr<ImageDescriptor> descriptor, |
19 | uint32_t target_width, |
20 | uint32_t target_height); |
21 | |
22 | ~SingleFrameCodec() override; |
23 | |
24 | // |Codec| |
25 | int frameCount() const override; |
26 | |
27 | // |Codec| |
28 | int repetitionCount() const override; |
29 | |
30 | // |Codec| |
31 | Dart_Handle getNextFrame(Dart_Handle args) override; |
32 | |
33 | // |DartWrappable| |
34 | size_t GetAllocationSize() const override; |
35 | |
36 | private: |
37 | enum class Status { kNew, kInProgress, kComplete }; |
38 | Status status_; |
39 | fml::RefPtr<ImageDescriptor> descriptor_; |
40 | uint32_t target_width_; |
41 | uint32_t target_height_; |
42 | fml::RefPtr<FrameInfo> cached_frame_; |
43 | std::vector<DartPersistentValue> pending_callbacks_; |
44 | |
45 | FML_FRIEND_MAKE_REF_COUNTED(SingleFrameCodec); |
46 | FML_FRIEND_REF_COUNTED_THREAD_SAFE(SingleFrameCodec); |
47 | }; |
48 | |
49 | } // namespace flutter |
50 | |
51 | #endif // FLUTTER_LIB_UI_PAINTING_SINGLE_FRAME_CODEC_H_ |
52 |