android_context_dynamic_impeller.h

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// Copyright 2013 The Flutter 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 FLUTTER_SHELL_PLATFORM_ANDROID_ANDROID_CONTEXT_DYNAMIC_IMPELLER_H_
#define FLUTTER_SHELL_PLATFORM_ANDROID_ANDROID_CONTEXT_DYNAMIC_IMPELLER_H_
 
#include <mutex>
 
#include "flutter/fml/macros.h"
#include "flutter/fml/native_library.h"
#include "flutter/shell/platform/android/android_context_gl_impeller.h"
#include "flutter/shell/platform/android/android_context_vk_impeller.h"
#include "flutter/shell/platform/android/context/android_context.h"
 
namespace flutter {
 
/// @brief An Impeller Android context that dynamically creates either an
/// [AndroidContextGLImpeller] or an [AndroidContextVKImpeller].
///
/// The construction of these objects is deferred until [GetImpellerContext] is
/// invoked. Up to this point, the reported backend will be kImpellerAutoselect.
class AndroidContextDynamicImpeller : public AndroidContext {
 public:
  explicit AndroidContextDynamicImpeller(
      const AndroidContext::ContextSettings& settings,
      std::shared_ptr<fml::BasicTaskRunner> io_task_runner);
 
  ~AndroidContextDynamicImpeller();
 
  // |AndroidContext|
  bool IsValid() const override { return true; }
 
  // |AndroidContext|
  bool IsDynamicSelection() const override { return true; }
 
  // |AndroidContext|
  AndroidRenderingAPI RenderingApi() const override;
 
  /// @brief Retrieve the GL Context if it was created, or nullptr.
  std::shared_ptr<AndroidContextGLImpeller> GetGLContext() const;
 
  /// @brief Retrieve the VK context if it was created, or nullptr.
  std::shared_ptr<AndroidContextVKImpeller> GetVKContext() const;
 
  // |AndroidContext|
  void SetupImpellerContext() override;
 
  std::shared_ptr<impeller::Context> GetImpellerContext() const override;
 
 private:
  const AndroidContext::ContextSettings settings_;
  std::shared_ptr<AndroidContextGLImpeller> gl_context_;
  std::shared_ptr<AndroidContextVKImpeller> vk_context_;
  std::shared_ptr<fml::BasicTaskRunner> io_task_runner_;
 
  FML_DISALLOW_COPY_AND_ASSIGN(AndroidContextDynamicImpeller);
};
 
}  // namespace flutter
 
#endif  // FLUTTER_SHELL_PLATFORM_ANDROID_ANDROID_CONTEXT_DYNAMIC_IMPELLER_H_