| 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_SHELL_COMMON_SHELL_IO_MANAGER_H_ |
| 6 | #define FLUTTER_SHELL_COMMON_SHELL_IO_MANAGER_H_ |
| 7 | |
| 8 | #include <memory> |
| 9 | |
| 10 | #include "flutter/flow/skia_gpu_object.h" |
| 11 | #include "flutter/fml/macros.h" |
| 12 | #include "flutter/fml/memory/weak_ptr.h" |
| 13 | #include "flutter/lib/ui/io_manager.h" |
| 14 | #include "third_party/skia/include/gpu/GrDirectContext.h" |
| 15 | |
| 16 | namespace flutter { |
| 17 | |
| 18 | class ShellIOManager final : public IOManager { |
| 19 | public: |
| 20 | // Convenience methods for platforms to create a GrDirectContext used to |
| 21 | // supply to the IOManager. The platforms may create the context themselves if |
| 22 | // they so desire. |
| 23 | static sk_sp<GrDirectContext> CreateCompatibleResourceLoadingContext( |
| 24 | GrBackend backend, |
| 25 | const sk_sp<const GrGLInterface>& gl_interface); |
| 26 | |
| 27 | ShellIOManager( |
| 28 | sk_sp<GrDirectContext> resource_context, |
| 29 | std::shared_ptr<const fml::SyncSwitch> is_gpu_disabled_sync_switch, |
| 30 | fml::RefPtr<fml::TaskRunner> unref_queue_task_runner, |
| 31 | std::shared_ptr<impeller::Context> impeller_context, |
| 32 | fml::TimeDelta unref_queue_drain_delay = |
| 33 | fml::TimeDelta::FromMilliseconds(millis: 8)); |
| 34 | |
| 35 | ~ShellIOManager() override; |
| 36 | |
| 37 | // This method should be called when a resource_context first becomes |
| 38 | // available. It is safe to call multiple times, and will only update |
| 39 | // the held resource context if it has not already been set. |
| 40 | void NotifyResourceContextAvailable(sk_sp<GrDirectContext> resource_context); |
| 41 | |
| 42 | // This method should be called if you want to force the IOManager to |
| 43 | // update its resource context reference. It should not be called |
| 44 | // if there are any Dart objects that have a reference to the old |
| 45 | // resource context, but may be called if the Dart VM is restarted. |
| 46 | void UpdateResourceContext(sk_sp<GrDirectContext> resource_context); |
| 47 | |
| 48 | fml::WeakPtr<ShellIOManager> GetWeakPtr(); |
| 49 | |
| 50 | // |IOManager| |
| 51 | fml::WeakPtr<IOManager> GetWeakIOManager() const override; |
| 52 | |
| 53 | // |IOManager| |
| 54 | fml::WeakPtr<GrDirectContext> GetResourceContext() const override; |
| 55 | |
| 56 | // |IOManager| |
| 57 | fml::RefPtr<flutter::SkiaUnrefQueue> GetSkiaUnrefQueue() const override; |
| 58 | |
| 59 | // |IOManager| |
| 60 | std::shared_ptr<const fml::SyncSwitch> GetIsGpuDisabledSyncSwitch() override; |
| 61 | |
| 62 | // |IOManager| |
| 63 | std::shared_ptr<impeller::Context> GetImpellerContext() const override; |
| 64 | |
| 65 | private: |
| 66 | // Resource context management. |
| 67 | sk_sp<GrDirectContext> resource_context_; |
| 68 | std::unique_ptr<fml::WeakPtrFactory<GrDirectContext>> |
| 69 | resource_context_weak_factory_; |
| 70 | // Unref queue management. |
| 71 | fml::RefPtr<flutter::SkiaUnrefQueue> unref_queue_; |
| 72 | std::shared_ptr<const fml::SyncSwitch> is_gpu_disabled_sync_switch_; |
| 73 | std::shared_ptr<impeller::Context> impeller_context_; |
| 74 | fml::WeakPtrFactory<ShellIOManager> weak_factory_; |
| 75 | |
| 76 | FML_DISALLOW_COPY_AND_ASSIGN(ShellIOManager); |
| 77 | }; |
| 78 | |
| 79 | } // namespace flutter |
| 80 | |
| 81 | #endif // FLUTTER_SHELL_COMMON_SHELL_IO_MANAGER_H_ |
| 82 |