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/*
* Copyright (C) 2017 The Android Open Source 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 android.media;
import android.annotation.NonNull;
import android.annotation.SystemApi;
import android.media.VolumeShaper;
import android.os.RemoteException;
import android.util.Log;
import java.lang.IllegalArgumentException;
import java.util.Objects;
/**
* Class to remotely control a player.
* @hide
*/
@SystemApi
public class PlayerProxy {
private final static String TAG = "PlayerProxy";
private final static boolean DEBUG = false;
private final AudioPlaybackConfiguration mConf; // never null
/**
* @hide
* Constructor. Proxy for this player associated with this AudioPlaybackConfiguration
* @param conf the configuration being proxied.
*/
PlayerProxy(@NonNull AudioPlaybackConfiguration apc) {
if (apc == null) {
throw new IllegalArgumentException("Illegal null AudioPlaybackConfiguration");
}
mConf = apc;
};
//=====================================================================
// Methods matching the IPlayer interface
/**
* @hide
*/
@SystemApi
public void start() {
try {
mConf.getIPlayer().start();
} catch (NullPointerException|RemoteException e) {
throw new IllegalStateException(
"No player to proxy for start operation, player already released?", e);
}
}
/**
* @hide
*/
@SystemApi
public void pause() {
try {
mConf.getIPlayer().pause();
} catch (NullPointerException|RemoteException e) {
throw new IllegalStateException(
"No player to proxy for pause operation, player already released?", e);
}
}
/**
* @hide
*/
@SystemApi
public void stop() {
try {
mConf.getIPlayer().stop();
} catch (NullPointerException|RemoteException e) {
throw new IllegalStateException(
"No player to proxy for stop operation, player already released?", e);
}
}
/**
* @hide
* @param vol
*/
@SystemApi
public void setVolume(float vol) {
try {
mConf.getIPlayer().setVolume(vol);
} catch (NullPointerException|RemoteException e) {
throw new IllegalStateException(
"No player to proxy for setVolume operation, player already released?", e);
}
}
/**
* @hide
* @param pan
*/
@SystemApi
public void setPan(float pan) {
try {
mConf.getIPlayer().setPan(pan);
} catch (NullPointerException|RemoteException e) {
throw new IllegalStateException(
"No player to proxy for setPan operation, player already released?", e);
}
}
/**
* @hide
* @param delayMs
*/
@SystemApi
public void setStartDelayMs(int delayMs) {
try {
mConf.getIPlayer().setStartDelayMs(delayMs);
} catch (NullPointerException|RemoteException e) {
throw new IllegalStateException(
"No player to proxy for setStartDelayMs operation, player already released?",
e);
}
}
/**
* @hide
* @param configuration
* @param operation
* @return volume shaper id or error
*/
public void applyVolumeShaper(
@NonNull VolumeShaper.Configuration configuration,
@NonNull VolumeShaper.Operation operation) {
try {
mConf.getIPlayer().applyVolumeShaper(configuration, operation);
} catch (NullPointerException|RemoteException e) {
throw new IllegalStateException(
"No player to proxy for applyVolumeShaper operation,"
+ " player already released?", e);
}
}
}
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