/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.server.hdmi;
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import android.hardware.hdmi.HdmiPortInfo;
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import android.util.SparseArray;
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import com.android.internal.util.IndentingPrintWriter;
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/**
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* A handler class for MHL control command. It converts user's command into MHL command and pass it
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* to MHL HAL layer.
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* <p>
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* It can be created only by {@link HdmiMhlControllerStub#create}.
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*/
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final class HdmiMhlControllerStub {
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private static final SparseArray<HdmiMhlLocalDeviceStub> mLocalDevices = new SparseArray<>();
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private static final HdmiPortInfo[] EMPTY_PORT_INFO = new HdmiPortInfo[0];
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private static final int INVALID_MHL_VERSION = 0;
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private static final int NO_SUPPORTED_FEATURES = 0;
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private static final int INVALID_DEVICE_ROLES = 0;
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// Private constructor. Use HdmiMhlControllerStub.create().
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private HdmiMhlControllerStub(HdmiControlService service) {
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}
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// Returns true if MHL controller is initialized and ready to use.
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boolean isReady() {
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return false;
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}
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static HdmiMhlControllerStub create(HdmiControlService service) {
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return new HdmiMhlControllerStub(service);
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}
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HdmiPortInfo[] getPortInfos() {
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return EMPTY_PORT_INFO;
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}
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/**
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* Return {@link HdmiMhlLocalDeviceStub} matched with the given port id.
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*
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* @return null if has no matched port id
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*/
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HdmiMhlLocalDeviceStub getLocalDevice(int portId) {
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return null;
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}
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/**
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* Return {@link HdmiMhlLocalDeviceStub} matched with the given device id.
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*
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* @return null if has no matched id
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*/
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HdmiMhlLocalDeviceStub getLocalDeviceById(int deviceId) {
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return null;
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}
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SparseArray<HdmiMhlLocalDeviceStub> getAllLocalDevices() {
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return mLocalDevices;
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}
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/**
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* Remove a {@link HdmiMhlLocalDeviceStub} matched with the given port id.
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*
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* @return removed {@link HdmiMhlLocalDeviceStub}. Return null if no matched port id.
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*/
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HdmiMhlLocalDeviceStub removeLocalDevice(int portId) {
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return null;
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}
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/**
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* Add a new {@link HdmiMhlLocalDeviceStub}.
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*
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* @return old {@link HdmiMhlLocalDeviceStub} having same port id
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*/
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HdmiMhlLocalDeviceStub addLocalDevice(HdmiMhlLocalDeviceStub device) {
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return null;
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}
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void clearAllLocalDevices() {
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}
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void sendVendorCommand(int portId, int offset, int length, byte[] data) {
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}
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void setOption(int flag, int value) {
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}
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/**
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* Get the MHL version supported by underlying hardware port of the given {@code portId}.
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* MHL specification version 2.0 returns 0x20, 3.0 will return 0x30 respectively.
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* The return value is stored in 'version'. Return INVALID_VERSION if MHL hardware layer
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* is not ready.
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*/
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int getMhlVersion(int portId) {
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return INVALID_MHL_VERSION;
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}
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/**
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* Get MHL version of a device which is connected to a port of the given {@code portId}.
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* MHL specification version 2.0 returns 0x20, 3.0 will return 0x30 respectively.
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* The return value is stored in 'version'.
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*/
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int getPeerMhlVersion(int portId) {
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return INVALID_MHL_VERSION;
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}
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/**
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* Get the bit flags describing the features supported by the system. Refer to feature support
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* flag register info in MHL specification.
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*/
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int getSupportedFeatures(int portId) {
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return NO_SUPPORTED_FEATURES;
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}
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/**
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* Get the bit flags describing the roles which ECBUS device can play. Refer to the
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* ECBUS_DEV_ROLES Register info MHL3.0 specification
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*/
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int getEcbusDeviceRoles(int portId) {
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return INVALID_DEVICE_ROLES;
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}
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void dump(IndentingPrintWriter pw) {
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}
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}
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