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// Copyright 2020 The Chromium 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 GPU_COMMAND_BUFFER_SERVICE_SHARED_IMAGE_BACKING_ANDROID_H_
#define GPU_COMMAND_BUFFER_SERVICE_SHARED_IMAGE_BACKING_ANDROID_H_
#include "base/containers/flat_set.h"
#include "base/files/scoped_file.h"
#include "gpu/command_buffer/service/shared_image_backing.h"
namespace gpu {
class SharedImageBackingAndroid : public ClearTrackingSharedImageBacking {
public:
SharedImageBackingAndroid(const Mailbox& mailbox,
viz::ResourceFormat format,
const gfx::Size& size,
const gfx::ColorSpace& color_space,
GrSurfaceOrigin surface_origin,
SkAlphaType alpha_type,
uint32_t usage,
size_t estimated_size,
bool is_thread_safe,
base::ScopedFD initial_upload_fd);
~SharedImageBackingAndroid() override;
virtual bool BeginWrite(base::ScopedFD* fd_to_wait_on);
virtual void EndWrite(base::ScopedFD end_write_fd);
virtual bool BeginRead(const SharedImageRepresentation* reader,
base::ScopedFD* fd_to_wait_on);
virtual void EndRead(const SharedImageRepresentation* reader,
base::ScopedFD end_read_fd);
base::ScopedFD TakeReadFence();
protected:
// All reads and writes must wait for exiting writes to complete.
base::ScopedFD write_sync_fd_ GUARDED_BY(lock_);
bool is_writing_ GUARDED_BY(lock_) = false;
// All writes must wait for existing reads to complete.
base::ScopedFD read_sync_fd_ GUARDED_BY(lock_);
base::flat_set<const SharedImageRepresentation*> active_readers_
GUARDED_BY(lock_);
bool is_overlay_accessing_ GUARDED_BY(lock_) = false;
SharedImageBackingAndroid(const SharedImageBackingAndroid&) = delete;
SharedImageBackingAndroid& operator=(const SharedImageBackingAndroid&) =
delete;
};
} // namespace gpu
#endif // GPU_COMMAND_BUFFER_SERVICE_SHARED_IMAGE_BACKING_ANDROID_H_
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