android5.1 PowerManagerService和DisplayPowerControler、DisplayPowerState关系.docVIP

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android5.1 PowerManagerService和DisplayPowerControler、DisplayPowerState关系

android5.1 PowerManagerService和DisplayPowerControler、DisplayPowerState关系 PowerManagerService在updateDisplayPowerStateLocked中与DisplayPowerControler交互,详细看代码: [java] view plain copy private boolean updateDisplayPowerStateLocked(int dirty) { final boolean oldDisplayReady = mDisplayReady; if ((dirty (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_WAKEFULNESS | DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED | DIRTY_BOOT_COMPLETED | DIRTY_SETTINGS | DIRTY_SCREEN_BRIGHTNESS_BOOST)) != 0) { mDisplayPowerRequest.policy = getDesiredScreenPolicyLocked(); // Determine appropriate screen brightness and auto-brightness adjustments. int screenBrightness = mScreenBrightnessSettingDefault; float screenAutoBrightnessAdjustment = 0.0f; boolean autoBrightness = (mScreenBrightnessModeSetting == Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC); if (isValidBrightness(mScreenBrightnessOverrideFromWindowManager)) { screenBrightness = mScreenBrightnessOverrideFromWindowManager; autoBrightness = false; } else if (isValidBrightness(mTemporaryScreenBrightnessSettingOverride)) { screenBrightness = mTemporaryScreenBrightnessSettingOverride; } else if (isValidBrightness(mScreenBrightnessSetting)) { screenBrightness = mScreenBrightnessSetting; } if (autoBrightness) { screenBrightness = mScreenBrightnessSettingDefault; if (isValidAutoBrightnessAdjustment( mTemporaryScreenAutoBrightnessAdjustmentSettingOverride)) { screenAutoBrightnessAdjustment = mTemporaryScreenAutoBrightnessAdjustmentSettingOverride; } else if (isValidAutoBrightnessAdjustment( mScreenAutoBrightnessAdjustmentSetting)) {

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