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content / public / browser / xr_integration_client.h [blame]
// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_PUBLIC_BROWSER_XR_INTEGRATION_CLIENT_H_
#define CONTENT_PUBLIC_BROWSER_XR_INTEGRATION_CLIENT_H_
#include <memory>
#include "content/common/content_export.h"
#include "content/public/browser/browser_xr_runtime.h"
#include "device/vr/public/mojom/isolated_xr_service.mojom-forward.h"
#include "device/vr/public/mojom/vr_service.mojom-forward.h"
#include "device/vr/public/mojom/xr_device.mojom-forward.h"
#include "mojo/public/cpp/bindings/pending_remote.h"
namespace device {
class VRDeviceProvider;
}
namespace content {
class XrInstallHelper;
using XRProviderList = std::vector<std::unique_ptr<device::VRDeviceProvider>>;
// This class is intended to provide implementers a means of accessing the
// the XRCompositorHost returned from a create session call to allow embedders
// to implement overlay UI code that they want. Content will notify of the
// events described below so that the UI may adjust accordingly. This class
// will be created when a session starts and destroyed when it ends.
class CONTENT_EXPORT VrUiHost {
public:
virtual ~VrUiHost() = default;
// Called when the currently active immersive WebXR session has its frames
// [un/]throttled by the compositor.
virtual void WebXRFramesThrottledChanged(bool throttled) = 0;
};
// A helper class for |ContentBrowserClient| to wrap for XR-specific
// integration that may be needed from content/. Currently it only provides
// access to relevant XrInstallHelpers, but will eventually be expanded to
// include integration points for VrUiHost.
// This should be implemented by embedders.
class CONTENT_EXPORT XrIntegrationClient {
public:
XrIntegrationClient() = default;
virtual ~XrIntegrationClient() = default;
XrIntegrationClient(const XrIntegrationClient&) = delete;
XrIntegrationClient& operator=(const XrIntegrationClient&) = delete;
// Returns the |XrInstallHelper| for the corresponding |XRDeviceId|, or
// nullptr if the requested |XRDeviceId| does not have any required extra
// installation steps.
virtual std::unique_ptr<XrInstallHelper> GetInstallHelper(
device::mojom::XRDeviceId device_id);
// Returns a vector of device providers that should be used in addition to
// any default providers built-in to //content.
virtual XRProviderList GetAdditionalProviders();
// Creates a runtime observer that will respond to browser XR runtime state
// changes. May return null if the integraton client does not need to observe
// state changes.
virtual std::unique_ptr<BrowserXRRuntime::Observer> CreateRuntimeObserver();
// Called by the BrowserXRRuntime to create a VrUiHost object for it, and
// takes ownership of the supplied XRCompositor.
virtual std::unique_ptr<VrUiHost> CreateVrUiHost(
WebContents& contents,
const std::vector<device::mojom::XRViewPtr>& views,
mojo::PendingRemote<device::mojom::ImmersiveOverlay> overlay);
};
} // namespace content
#endif // CONTENT_PUBLIC_BROWSER_XR_INTEGRATION_CLIENT_H_