// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "ui/ozone/platform/wayland/host/wayland_buffer_backing_shm.h"

#include "ui/ozone/platform/wayland/host/wayland_buffer_factory.h"
#include "ui/ozone/platform/wayland/host/wayland_connection.h"

namespace ui {

WaylandBufferBackingShm::WaylandBufferBackingShm(
    const WaylandConnection* connection,
    base::ScopedFD fd,
    uint64_t length,
    const gfx::Size& size,
    uint32_t buffer_id)
    : WaylandBufferBacking(connection,
                           buffer_id,
                           size,
                           BufferBackingType::kShm),
      fd_(std::move(fd)),
      length_(length) {}

WaylandBufferBackingShm::~WaylandBufferBackingShm() = default;

void WaylandBufferBackingShm::RequestBufferHandle(
    base::OnceCallback<void(wl::Object<wl_buffer>)> callback) {
  DCHECK(!callback.is_null());
  DCHECK(fd_.is_valid());

  std::move(callback).Run(connection()->buffer_factory()->CreateShmBuffer(
      fd_, length_, size(), /*with_alpha_channel=*/true));
  if (UseExplicitSyncRelease())
    auto close = std::move(fd_);
}

}  // namespace ui