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// Copyright 2018 The Chromium OS Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
syntax = "proto2";
option optimize_for = LITE_RUNTIME;
package power_manager;
// See
// https://chromium.googlesource.com/chromiumos/platform2/+/master/power_manager/docs/screen_brightness.md
// for information about the mapping between brightness percents and backlight
// hardware levels.
// Request to change the backlight brightness sent from Chrome to powerd in a
// SetScreenBrightnessPercent D-Bus method call.
message SetBacklightBrightnessRequest {
// Desired backlight brightness as a percent in the range [0.0, 100.0].
optional double percent = 1;
// The speed at which the brightness should go to the requested percent.
enum Transition {
// The brightness should animate to the new percent.
GRADUAL = 0;
// The brightness should instantaneously go to the new percent.
INSTANT = 1;
}
optional Transition transition = 2;
// The reason the request was sent.
enum Cause {
// Explicit user request (typically using the onscreen brightness slider).
USER_REQUEST = 0;
// Automated request based on a prediction of the desired brightness.
MODEL = 1;
}
optional Cause cause = 3;
// Next value to use: 4
}
// Announcement of a backlight brightness change emitted by powerd via a
// ScreenBrightnessChanged or KeyboardBrightnessChanged D-Bus signal.
message BacklightBrightnessChange {
// Current backlight brightness as a percent in the range [0.0, 100.0].
optional double percent = 1;
// The reason the brightness was changed.
enum Cause {
// Explicit user request, e.g. brightness keys or brightness slider.
USER_REQUEST = 0;
// Automated change in response to user activity (input event, video
// activity, etc.).
USER_ACTIVITY = 1;
// Automated powerd change triggered by idle timeout due to user inactivity.
USER_INACTIVITY = 2;
// Automated powerd change due by a change to the ambient light level.
AMBIENT_LIGHT_CHANGED = 3;
// An external power source was connected.
EXTERNAL_POWER_CONNECTED = 4;
// An external power source was disconnected.
EXTERNAL_POWER_DISCONNECTED = 5;
// Backlights were forced off by Chrome (typically due to the user tapping
// the power button on a convertible device).
FORCED_OFF = 6;
// Backlights are no longer being forced off by Chrome.
NO_LONGER_FORCED_OFF = 7;
// Unspecified automated change (suspend/resume, shutdown, etc.).
OTHER = 8;
// Automated request based on a prediction of the desired brightness.
MODEL = 9;
// Next value to use: 10
}
optional Cause cause = 2;
// Next value to use: 3
}