biometrics: Introduce TetrisDisplayModeProvider

/*

 * Copyright (C) 2022 The LineageOS Project

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *      http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

package com.android.systemui.biometrics

import android.content.Context

import android.view.Surface

import java.io.File

import java.io.IOException

private const val TAG = "TetrisUdfpsDisplayModeProvider"

private const val HBM_PATH = "/sys/devices/platform/soc/1401a000.dsi0/hbm"

private const val UI_STATUS_PATH = "/sys/panel_feature/ui_status"

class TetrisUdfpsDisplayModeProvider constructor(

    private val context: Context

): UdfpsDisplayModeProvider {

    override fun enable(onEnabled: Runnable?) {

        setNodeValue(HBM_PATH, "1")

        setNodeValue(UI_STATUS_PATH, "1")

        onEnabled?.run()

    }

    override fun disable(onDisabled: Runnable?) {

        setNodeValue(HBM_PATH, "0")

        setNodeValue(UI_STATUS_PATH, "0")

        onDisabled?.run()

    }

    private fun setNodeValue(nodePath: String, value: String) {

        try {

            File(nodePath).writeText(value)

            logger.v(TAG, "setNodeValue | Wrote $value to $nodePath")

        } catch (e: IOException) {

            logger.e(TAG, "setNodeValue | Failed to write $value to $nodePath", e)

        }

    }

}