chromium/media/gpu/chromeos/frame_resource_converter.h

// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef MEDIA_GPU_CHROMEOS_FRAME_RESOURCE_CONVERTER_H_
#define MEDIA_GPU_CHROMEOS_FRAME_RESOURCE_CONVERTER_H_

#include "base/memory/scoped_refptr.h"
#include "media/gpu/media_gpu_export.h"
#include "ui/gfx/generic_shared_memory_id.h"

namespace base {
class Location;
class SequencedTaskRunner;
}  // namespace base

namespace media {

class FrameResource;
class VideoFrame;

// This interface is at the end of VideoDecoderPipeline to convert
// FrameResources to VideoFrames.
//
// A FrameResourceConverter is expected to be used as follows:
//
// 1) It can be constructed on any sequence. The first method call after
//    construction must be Initialize() which can happen on any sequence and
//    should only be called once.
//
// 2) Other methods must be called on the |parent_task_runner| passed to
//    Initialize().
//
// 3) Destruction must occur through
//    std::default_delete<FrameResourceConverter> on that same
//    |parent_task_runner| (unless Initialize() was never called, in which case,
//    the destruction can occur on any sequence).
class FrameResourceConverter { … };

}  // namespace media

namespace std {

// Specialize std::default_delete to call Destroy().
template <>
struct MEDIA_GPU_EXPORT default_delete<media::FrameResourceConverter> { … };

}  // namespace std

#endif  // MEDIA_GPU_CHROMEOS_FRAME_RESOURCE_CONVERTER_H_