Flutter Windows Embedder
flutter_windows_texture_registrar.h
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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_PLATFORM_WINDOWS_FLUTTER_WINDOWS_TEXTURE_REGISTRAR_H_
6 #define FLUTTER_SHELL_PLATFORM_WINDOWS_FLUTTER_WINDOWS_TEXTURE_REGISTRAR_H_
7 
8 #include <memory>
9 #include <mutex>
10 #include <unordered_map>
11 
12 #include "flutter/fml/closure.h"
13 #include "flutter/fml/macros.h"
17 
18 namespace flutter {
19 
20 class FlutterWindowsEngine;
21 
22 // An object managing the registration of an external texture.
23 // Thread safety: All member methods are thread safe.
25  public:
27  std::shared_ptr<egl::ProcTable> gl);
28 
29  // Registers a texture described by the given |texture_info| object.
30  // Returns the non-zero, positive texture id or -1 on error.
31  int64_t RegisterTexture(const FlutterDesktopTextureInfo* texture_info);
32 
33  // Attempts to unregister the texture identified by |texture_id|.
34  void UnregisterTexture(int64_t texture_id, fml::closure callback = nullptr);
35 
36  // Notifies the engine about a new frame being available.
37  // Returns true on success.
39 
40  // Attempts to populate the given |texture| by copying the
41  // contents of the texture identified by |texture_id|.
42  // Returns true on success.
43  bool PopulateTexture(int64_t texture_id,
44  size_t width,
45  size_t height,
46  FlutterOpenGLTexture* texture);
47 
48  private:
49  FlutterWindowsEngine* engine_ = nullptr;
50  std::shared_ptr<egl::ProcTable> gl_;
51 
52  // All registered textures, keyed by their IDs.
53  std::unordered_map<int64_t, std::unique_ptr<flutter::ExternalTexture>>
54  textures_;
55  std::mutex map_mutex_;
56 
57  int64_t EmplaceTexture(std::unique_ptr<ExternalTexture> texture);
58 
59  FML_DISALLOW_COPY_AND_ASSIGN(FlutterWindowsTextureRegistrar);
60 };
61 
62 }; // namespace flutter
63 
64 #endif // FLUTTER_SHELL_PLATFORM_WINDOWS_FLUTTER_WINDOWS_TEXTURE_REGISTRAR_H_
flutter::FlutterWindowsTextureRegistrar::MarkTextureFrameAvailable
bool MarkTextureFrameAvailable(int64_t texture_id)
Definition: flutter_windows_texture_registrar.cc:103
flutter::FlutterWindowsEngine
Definition: flutter_windows_engine.h:90
flutter::FlutterWindowsTextureRegistrar::PopulateTexture
bool PopulateTexture(int64_t texture_id, size_t width, size_t height, FlutterOpenGLTexture *texture)
Definition: flutter_windows_texture_registrar.cc:111
flutter::FlutterWindowsTextureRegistrar
Definition: flutter_windows_texture_registrar.h:24
external_texture.h
proc_table.h
FlutterDesktopTextureInfo
Definition: flutter_texture_registrar.h:151
flutter::FlutterWindowsTextureRegistrar::FlutterWindowsTextureRegistrar
FlutterWindowsTextureRegistrar(FlutterWindowsEngine *engine, std::shared_ptr< egl::ProcTable > gl)
Definition: flutter_windows_texture_registrar.cc:21
flutter
Definition: accessibility_bridge_windows.cc:11
flutter_texture_registrar.h
flutter::FlutterWindowsTextureRegistrar::UnregisterTexture
void UnregisterTexture(int64_t texture_id, fml::closure callback=nullptr)
Definition: flutter_windows_texture_registrar.cc:79
texture_id
uint32_t texture_id
Definition: compositor_opengl.cc:20
flutter::FlutterWindowsTextureRegistrar::RegisterTexture
int64_t RegisterTexture(const FlutterDesktopTextureInfo *texture_info)
Definition: flutter_windows_texture_registrar.cc:26
callback
FlutterDesktopBinaryReply callback
Definition: flutter_windows_view_unittests.cc:52