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  /external/autotest/client/site_tests/power_BacklightSuspend/
power_BacklightSuspend.py 17 backlight = power_utils.Backlight()
19 results['initial_brightness'] = backlight.get_level()
20 max_level = backlight.get_max_level()
27 backlight.set_resume_level(resume_level)
31 final_level = backlight.get_level()
  /frameworks/base/services/core/java/com/android/server/display/
DisplayPowerState.java 230 scheduleScreenUpdate(); // update backlight brightness
344 * Updates the state of the screen and backlight asynchronously on a separate thread.
363 public boolean setState(int state, int backlight) {
366 boolean backlightChanged = backlight != mPendingBacklight;
370 + Display.stateToString(state) + ", backlight=" + backlight);
374 mPendingBacklight = backlight;
407 final int backlight; local
412 backlight = mPendingBacklight;
413 backlightChanged = (backlight != mActualBacklight)
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BrightnessMappingStrategy.java 37 * A utility to map from an ambient brightness to a display's "backlight" brightness based on the
40 * Note that without a mapping from the nits to a display backlight level, any
78 "backlight values, autobrightness functionality may be impaired.");
204 * Converts the provided backlight value to nits if possible.
206 * Returns -1.0f if there's no available mapping for the backlight to nits.
208 public abstract float convertToNits(int backlight);
405 * backlight of the display.
481 public float convertToNits(int backlight) {
560 * range of the display, rather than to the range of the backlight control (typically 0-255).
574 // A spline mapping from nits to the corresponding backlight value, normalized to the rang
643 float backlight = mNitsToBacklightSpline.interpolate(nits); local
748 float[] backlight = curve.second; local
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DisplayPowerController.java 319 // The mapper between ambient lux, display backlight values, and display brightness.
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  /external/autotest/client/site_tests/power_VideoDetector/
power_VideoDetector.py 16 Verify the backlight does not get dimmed while playing video.
47 backlight = power_utils.Backlight()
49 utils.wait_for_value(backlight.get_max_level)
64 final_brightness = backlight.get_level()
66 # Check that the backlight stayed the same.
69 ('Backlight level changed from %d to %d when it should ' + \
  /frameworks/base/services/tests/servicestests/src/com/android/server/display/
BrightnessMappingStrategyTest.java 139 final float backlight = simple.getBrightness(lux) * PowerManager.BRIGHTNESS_ON; local
141 backlight > DISPLAY_LEVELS_BACKLIGHT[i - 1]
142 && backlight < DISPLAY_LEVELS_BACKLIGHT[i]);
198 final float backlight = physical.getBrightness(lux) * PowerManager.BRIGHTNESS_ON; local
199 final float nits = backlightToBrightness.interpolate(backlight);
274 // Extra backlight level
275 final int[] backlight = Arrays.copyOf( local
277 backlight[backlight.length - 1] = backlight[backlight.length - 2] + 1
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