From 1187ea7d574257cf93c007131af2103cf20322d2 Mon Sep 17 00:00:00 2001
From: davidevinavil <davidevinavil@gmail.com>
Date: Mon, 27 Aug 2018 00:15:53 +0200
Subject: msm8996-common: Import backlight overlays from Marlin

Change-Id: Ib1d1da843265a3cf646864bb25bc6f22e91a8f5e
---
 .../frameworks/base/core/res/res/values/config.xml | 153 +++++++++++++++++++++
 1 file changed, 153 insertions(+)

(limited to 'overlay')

diff --git a/overlay/frameworks/base/core/res/res/values/config.xml b/overlay/frameworks/base/core/res/res/values/config.xml
index 772a9ce..0146cc9 100644
--- a/overlay/frameworks/base/core/res/res/values/config.xml
+++ b/overlay/frameworks/base/core/res/res/values/config.xml
@@ -17,6 +17,159 @@
 <!-- These resources are around just to allow their values to be customized
      for different hardware and product builds.  Do not translate. -->
 <resources xmlns:xliff="urn:oasis:names:tc:xliff:document:1.2">
+    <!-- Flag indicating whether the we should enable the automatic brightness in Settings.
+         Software implementation will be used if config_hardware_auto_brightness_available is not set -->
+    <bool name="config_automatic_brightness_available">true</bool>
+
+    <!-- Array of light sensor lux values to define our levels for auto backlight brightness support.
+         The N entries of this array define N + 1 control points as follows:
+         (1-based arrays)
+         Point 1:            (0, value[1]):             lux <= 0
+         Point 2:     (level[1], value[2]):  0        < lux <= level[1]
+         Point 3:     (level[2], value[3]):  level[2] < lux <= level[3]
+         ...
+         Point N+1: (level[N], value[N+1]):  level[N] < lux
+         The control points must be strictly increasing.  Each control point
+         corresponds to an entry in the brightness backlight values arrays.
+         For example, if lux == level[1] (first element of the levels array)
+         then the brightness will be determined by value[2] (second element
+         of the brightness values array).
+         Spline interpolation is used to determine the auto-brightness
+         backlight values for lux levels between these control points.
+         Must be overridden in platform specific overlays -->
+    <integer-array name="config_autoBrightnessLevels">
+        <item>1</item>
+        <item>2</item>
+        <item>3</item>
+        <item>4</item>
+        <item>8</item>
+        <item>12</item>
+        <item>20</item>
+        <item>33</item>
+        <item>55</item>
+        <item>90</item>
+        <item>148</item>
+        <item>245</item>
+        <item>403</item>
+        <item>665</item>
+        <item>1097</item>
+        <item>1808</item>
+        <item>2981</item>
+        <item>5000</item>
+    </integer-array>
+
+    <!-- Array of desired screen brightness in nits corresponding to the lux values
+         in the config_autoBrightnessLevels array. As with config_screenBrightnessMinimumNits and
+         config_screenBrightnessMaximumNits, the display brightness is defined as the measured
+         brightness of an all-white image.
+         If this is defined then:
+            - config_autoBrightnessLcdBacklightValues should not be defined
+            - config_screenBrightnessNits must be defined
+            - config_screenBrightnessBacklight must be defined
+         This array should have size one greater than the size of the config_autoBrightnessLevels
+         array. The brightness values must be non-negative and non-decreasing. This must be
+         overridden in platform specific overlays -->
+    <array name="config_autoBrightnessDisplayValuesNits">
+        <item>10.45935</item>
+        <item>29.25559</item>
+        <item>34.240692</item>
+        <item>37.514347</item>
+        <item>40.018696</item>
+        <item>46.885098</item>
+        <item>51.626434</item>
+        <item>58.610405</item>
+        <item>66.890915</item>
+        <item>77.61644</item>
+        <item>90.221886</item>
+        <item>105.80314</item>
+        <item>126.073845</item>
+        <item>154.16931</item>
+        <item>191.83717</item>
+        <item>240.74442</item>
+        <item>294.84857</item>
+        <item>348.05453</item>
+        <item>394.98703</item>
+    </array>
+
+    <!-- An array describing the screen's backlight values corresponding to the brightness
+         values in the config_screenBrightnessNits array.
+         This array should be equal in size to config_screenBrightnessBacklight. -->
+    <integer-array name="config_screenBrightnessBacklight">
+        <item>0</item>
+        <item>15</item>
+        <item>30</item>
+        <item>45</item>
+        <item>60</item>
+        <item>75</item>
+        <item>90</item>
+        <item>105</item>
+        <item>120</item>
+        <item>135</item>
+        <item>150</item>
+        <item>165</item>
+        <item>180</item>
+        <item>195</item>
+        <item>210</item>
+        <item>225</item>
+        <item>240</item>
+        <item>255</item>
+    </integer-array>
+
+    <!-- An array of floats describing the screen brightness in nits corresponding to the backlight
+         values in the config_screenBrightnessBacklight array.  On OLED displays these  values
+         should be measured with an all white image while the display is in the fully on state.
+         Note that this value should *not* reflect the maximum brightness value for any high
+         brightness modes but only the maximum brightness value obtainable in a sustainable manner.
+         This array should be equal in size to config_screenBrightnessBacklight -->
+    <array name="config_screenBrightnessNits">
+        <item>0</item>
+        <item>26.11</item>
+        <item>50.5</item>
+        <item>74.17</item>
+        <item>96.89</item>
+        <item>118.3</item>
+        <item>139.8</item>
+        <item>162.9</item>
+        <item>189.8</item>
+        <item>217.4</item>
+        <item>240.4</item>
+        <item>265.3</item>
+        <item>288.7</item>
+        <item>316</item>
+        <item>340.8</item>
+        <item>357.9</item>
+        <item>376.2</item>
+        <item>392.9</item>
+    </array>
+
+    <!-- Screen brightness used to dim the screen when the user activity
+         timeout expires.  May be less than the minimum allowed brightness setting
+         that can be set by the user. -->
+    <integer name="config_screenBrightnessDim">1</integer>
+
+    <!-- Default screen brightness setting.
+         Must be in the range specified by minimum and maximum. -->
+    <integer name="config_screenBrightnessSettingDefault">53</integer>
+
+    <!-- Minimum screen brightness setting allowed by the power manager.
+         The user is forbidden from setting the brightness below this level. -->
+    <integer name="config_screenBrightnessSettingMinimum">1</integer>
+
+    <!-- Stability requirements in milliseconds for accepting a new brightness level.  This is used
+         for debouncing the light sensor.  Different constants are used to debounce the light sensor
+         when adapting to brighter or darker environments.  This parameter controls how quickly
+         brightness changes occur in response to an observed change in light level that exceeds the
+         hysteresis threshold. -->
+    <integer name="config_autoBrightnessBrighteningLightDebounce">1500</integer>
+    <integer name="config_autoBrightnessDarkeningLightDebounce">1500</integer>
+
+    <!-- The maximum range of gamma adjustment possible using the screen
+         auto-brightness adjustment setting. -->
+    <fraction name="config_autoBrightnessAdjustmentMaxGamma">400%</fraction>
+
+    <!-- Period of time in which to consider light samples in milliseconds. -->
+    <integer name="config_autoBrightnessAmbientLightHorizon">1500</integer>
+
     <!-- If this is true, the screen will come on when you unplug usb/power/whatever. -->
     <bool name="config_unplugTurnsOnScreen">true</bool>
 
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