chromium/components/viz/common/frame_sinks/copy_output_result.h

// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef COMPONENTS_VIZ_COMMON_FRAME_SINKS_COPY_OUTPUT_RESULT_H_
#define COMPONENTS_VIZ_COMMON_FRAME_SINKS_COPY_OUTPUT_RESULT_H_

#include <array>
#include <vector>

#include "base/memory/raw_ptr.h"
#include "base/threading/thread_checker.h"
#include "components/viz/common/resources/release_callback.h"
#include "components/viz/common/viz_common_export.h"
#include "gpu/command_buffer/common/mailbox_holder.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "ui/gfx/color_space.h"
#include "ui/gfx/geometry/rect.h"

class SkBitmap;

namespace viz {

// Base class for providing the result of a CopyOutputRequest. Implementations
// that execute CopyOutputRequests will use a subclass implementation to define
// data storage, access and ownership semantics relative to the lifetime of the
// CopyOutputResult instance.
class VIZ_COMMON_EXPORT CopyOutputResult { … };

// Subclass of CopyOutputResult that provides a RGBA result from an
// SkBitmap (or an I420_PLANES result based on a SkBitmap). Implies that the
// destination is kSystemMemory.
class VIZ_COMMON_EXPORT CopyOutputSkBitmapResult : public CopyOutputResult { … };

// Subclass of CopyOutputResult that holds references to textures (via
// mailboxes). The owner of the result must take ownership of the textures if it
// wants to use them by calling |TakeTextureOwnership()|, and then call the
// ReleaseCallbacks when the textures will no longer be used to release
// ownership and allow the textures to be reused or destroyed. If ownership is
// not claimed, it will be released when this class is destroyed.
class VIZ_COMMON_EXPORT CopyOutputTextureResult : public CopyOutputResult { … };

// Scoped class for accessing SkBitmap in CopyOutputRequest.
// It cannot be used across threads.
class VIZ_COMMON_EXPORT CopyOutputResult::ScopedSkBitmap { … };

}  // namespace viz

#endif  // COMPONENTS_VIZ_COMMON_FRAME_SINKS_COPY_OUTPUT_RESULT_H_