metal_screenshot.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.
 
#pragma once
 
#include <CoreFoundation/CoreFoundation.h>
#include <CoreImage/CoreImage.h>
#include <string>
 
#include "flutter/fml/macros.h"
 
namespace impeller {
namespace testing {
 
class MetalScreenshoter;
 
/// A screenshot that was produced from `MetalScreenshoter`.
class MetalScreenshot {
 public:
  ~MetalScreenshot();
 
  const UInt8* GetBytes() const;
 
  size_t GetHeight() const;
 
  size_t GetWidth() const;
 
  bool WriteToPNG(const std::string& path) const;
 
 private:
  friend class MetalScreenshoter;
  explicit MetalScreenshot(CGImageRef cgImage);
  FML_DISALLOW_COPY_AND_ASSIGN(MetalScreenshot);
  CGImageRef cg_image_;
  CFDataRef pixel_data_;
};
}  // namespace testing
}  // namespace impeller