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126 lines
3.7 KiB
Plaintext
126 lines
3.7 KiB
Plaintext
// Copyright 2015 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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module device.mojom;
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import "mojo/common/time.mojom";
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import "gpu/ipc/common/mailbox_holder.mojom";
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import "gpu/ipc/common/sync_token.mojom";
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import "ui/gfx/geometry/mojo/geometry.mojom";
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// A field of view, given by 4 degrees describing the view from a center point.
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struct VRFieldOfView {
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float upDegrees;
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float downDegrees;
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float leftDegrees;
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float rightDegrees;
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};
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// A display's position, orientation, velocity, and acceleration state at the
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// given timestamp.
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struct VRPose {
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array<float, 4>? orientation;
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array<float, 3>? position;
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array<float, 3>? angularVelocity;
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array<float, 3>? linearVelocity;
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array<float, 3>? angularAcceleration;
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array<float, 3>? linearAcceleration;
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};
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struct VRDisplayCapabilities {
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bool hasPosition;
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bool hasExternalDisplay;
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bool canPresent;
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};
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// Information about the optical properties for an eye in a VRDisplay.
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struct VREyeParameters {
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VRFieldOfView fieldOfView;
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array<float, 3> offset;
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uint32 renderWidth;
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uint32 renderHeight;
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};
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struct VRStageParameters {
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array<float, 16> standingTransform;
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float sizeX;
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float sizeZ;
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};
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struct VRDisplayInfo {
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uint32 index;
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string displayName;
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VRDisplayCapabilities capabilities;
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VRStageParameters? stageParameters;
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VREyeParameters leftEye;
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VREyeParameters rightEye;
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};
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enum VRDisplayEventReason {
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NONE = 0,
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NAVIGATION = 1,
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MOUNTED = 2,
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UNMOUNTED = 3
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};
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// TODO(shaobo.yan@intel.com) : Add comments to describe these interfaces about
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// how to use and where they live.
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interface VRService {
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// TODO(shaobo.yan@intel.com, crbug/701027): Use a factory function which
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// takes a VRServiceClient so we will never have a half-initialized VRService.
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SetClient(VRServiceClient client) => ();
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// Inform the service that the page is listening for vrdisplayactivate events.
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// TODO(mthiesse): Move SetListeningForActivate onto VRDisplay.
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SetListeningForActivate(bool listening);
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};
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interface VRServiceClient {
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OnDisplayConnected(VRMagicWindowProvider magic_window_provider,
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VRDisplayHost display, VRDisplayClient& request,
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VRDisplayInfo display_info);
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};
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interface VRSubmitFrameClient {
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OnSubmitFrameTransferred();
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OnSubmitFrameRendered();
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};
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// Provides a communication channel from the renderer to the browser-side host
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// of a (device/) VrDisplayImpl.
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interface VRDisplayHost {
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RequestPresent(VRSubmitFrameClient client,
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VRPresentationProvider& request) => (bool success);
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ExitPresent();
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};
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// Provides the necessary functionality for a non-presenting WebVR page to draw
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// magic window content.
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interface VRMagicWindowProvider {
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GetPose() => (VRPose? pose);
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};
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// Provides the necessary functionality for a presenting WebVR page to draw
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// frames for a VrDisplay.
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interface VRPresentationProvider {
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enum VSyncStatus { SUCCESS, CLOSING };
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// The frameId maps a VSync to a frame arriving from the compositor. IDs will
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// be reused after the frame arrives from the compositor. Negative IDs imply
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// no mapping.
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GetVSync() => (VRPose? pose, mojo.common.mojom.TimeDelta time, int16 frame_id,
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VSyncStatus status);
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SubmitFrame(int16 frame_id, gpu.mojom.MailboxHolder mailbox_holder);
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UpdateLayerBounds(int16 frame_id, gfx.mojom.RectF left_bounds,
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gfx.mojom.RectF right_bounds, gfx.mojom.Size source_size);
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};
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interface VRDisplayClient {
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OnChanged(VRDisplayInfo display);
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OnExitPresent();
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OnBlur();
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OnFocus();
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OnActivate(VRDisplayEventReason reason) => (bool will_not_present);
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OnDeactivate(VRDisplayEventReason reason);
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};
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