image_encoding_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_LIB_UI_PAINTING_IMAGE_ENCODING_IMPELLER_H_
#define FLUTTER_LIB_UI_PAINTING_IMAGE_ENCODING_IMPELLER_H_
 
#include "flutter/common/task_runners.h"
#include "flutter/display_list/image/dl_image.h"
#include "flutter/fml/memory/weak_ptr.h"
#include "flutter/fml/status_or.h"
#include "flutter/fml/synchronization/sync_switch.h"
#include "flutter/lib/ui/snapshot_delegate.h"
 
namespace impeller {
class Context;
}  // namespace impeller
 
namespace flutter {
 
class ImageEncodingImpeller {
 public:
  static int GetColorSpace(const std::shared_ptr<impeller::Texture>& texture);
 
  /// Converts a DlImage to a SkImage.
  /// This should be called from the thread that corresponds to
  /// `dl_image->owning_context()` when gpu access is guaranteed.
  /// See also: `ConvertImageToRaster`.
  /// Visible for testing.
  static void ConvertDlImageToSkImage(
      const sk_sp<DlImage>& dl_image,
      std::function<void(fml::StatusOr<sk_sp<SkImage>>)> encode_task,
      const fml::TaskRunnerAffineWeakPtr<SnapshotDelegate>& snapshot_delegate,
      const std::shared_ptr<impeller::Context>& impeller_context);
 
  /// Converts a DlImage to a SkImage.
  /// `encode_task` is executed with the resulting `SkImage`.
  static void ConvertImageToRaster(
      const sk_sp<DlImage>& dl_image,
      std::function<void(fml::StatusOr<sk_sp<SkImage>>)> encode_task,
      const fml::RefPtr<fml::TaskRunner>& raster_task_runner,
      const fml::RefPtr<fml::TaskRunner>& io_task_runner,
      const fml::TaskRunnerAffineWeakPtr<SnapshotDelegate>& snapshot_delegate,
      const std::shared_ptr<const fml::SyncSwitch>& is_gpu_disabled_sync_switch,
      const std::shared_ptr<impeller::Context>& impeller_context);
};
}  // namespace flutter
 
#endif  // FLUTTER_LIB_UI_PAINTING_IMAGE_ENCODING_IMPELLER_H_