/*
* Copyright (C) 2014 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.session;
import android.annotation.DrawableRes;
import android.annotation.Nullable;
import android.media.RemoteControlClient;
import android.os.Bundle;
import android.os.Parcel;
import android.os.Parcelable;
import android.os.SystemClock;
import android.text.TextUtils;
import android.util.Log;
import java.util.ArrayList;
import java.util.List;
/**
* Playback state for a {@link MediaSession}. This includes a state like
* {@link PlaybackState#STATE_PLAYING}, the current playback position,
* and the current control capabilities.
*/
public final class PlaybackState implements Parcelable {
private static final String TAG = "PlaybackState";
/**
* Indicates this session supports the stop command.
*
* @see Builder#setActions(long)
*/
public static final long ACTION_STOP = 1 << 0;
/**
* Indicates this session supports the pause command.
*
* @see Builder#setActions(long)
*/
public static final long ACTION_PAUSE = 1 << 1;
/**
* Indicates this session supports the play command.
*
* @see Builder#setActions(long)
*/
public static final long ACTION_PLAY = 1 << 2;
/**
* Indicates this session supports the rewind command.
*
* @see Builder#setActions(long)
*/
public static final long ACTION_REWIND = 1 << 3;
/**
* Indicates this session supports the previous command.
*
* @see Builder#setActions(long)
*/
public static final long ACTION_SKIP_TO_PREVIOUS = 1 << 4;
/**
* Indicates this session supports the next command.
*
* @see Builder#setActions(long)
*/
public static final long ACTION_SKIP_TO_NEXT = 1 << 5;
/**
* Indicates this session supports the fast forward command.
*
* @see Builder#setActions(long)
*/
public static final long ACTION_FAST_FORWARD = 1 << 6;
/**
* Indicates this session supports the set rating command.
*
* @see Builder#setActions(long)
*/
public static final long ACTION_SET_RATING = 1 << 7;
/**
* Indicates this session supports the seek to command.
*
* @see Builder#setActions(long)
*/
public static final long ACTION_SEEK_TO = 1 << 8;
/**
* Indicates this session supports the play/pause toggle command.
*
* @see Builder#setActions(long)
*/
public static final long ACTION_PLAY_PAUSE = 1 << 9;
/**
* Indicates this session supports the play from media id command.
*
* @see Builder#setActions(long)
*/
public static final long ACTION_PLAY_FROM_MEDIA_ID = 1 << 10;
/**
* Indicates this session supports the play from search command.
*
* @see Builder#setActions(long)
*/
public static final long ACTION_PLAY_FROM_SEARCH = 1 << 11;
/**
* Indicates this session supports the skip to queue item command.
*
* @see Builder#setActions(long)
*/
public static final long ACTION_SKIP_TO_QUEUE_ITEM = 1 << 12;
/**
* This is the default playback state and indicates that no media has been
* added yet, or the performer has been reset and has no content to play.
*
* @see Builder#setState(int, long, float)
* @see Builder#setState(int, long, float, long)
*/
public final static int STATE_NONE = 0;
/**
* State indicating this item is currently stopped.
*
* @see Builder#setState
*/
public final static int STATE_STOPPED = 1;
/**
* State indicating this item is currently paused.
*
* @see Builder#setState
*/
public final static int STATE_PAUSED = 2;
/**
* State indicating this item is currently playing.
*
* @see Builder#setState
*/
public final static int STATE_PLAYING = 3;
/**
* State indicating this item is currently fast forwarding.
*
* @see Builder#setState
*/
public final static int STATE_FAST_FORWARDING = 4;
/**
* State indicating this item is currently rewinding.
*
* @see Builder#setState
*/
public final static int STATE_REWINDING = 5;
/**
* State indicating this item is currently buffering and will begin playing
* when enough data has buffered.
*
* @see Builder#setState
*/
public final static int STATE_BUFFERING = 6;
/**
* State indicating this item is currently in an error state. The error
* message should also be set when entering this state.
*
* @see Builder#setState
*/
public final static int STATE_ERROR = 7;
/**
* State indicating the class doing playback is currently connecting to a
* new destination. Depending on the implementation you may return to the previous
* state when the connection finishes or enter {@link #STATE_NONE}.
* If the connection failed {@link #STATE_ERROR} should be used.
*
* @see Builder#setState
*/
public final static int STATE_CONNECTING = 8;
/**
* State indicating the player is currently skipping to the previous item.
*
* @see Builder#setState
*/
public final static int STATE_SKIPPING_TO_PREVIOUS = 9;
/**
* State indicating the player is currently skipping to the next item.
*
* @see Builder#setState
*/
public final static int STATE_SKIPPING_TO_NEXT = 10;
/**
* State indicating the player is currently skipping to a specific item in
* the queue.
*
* @see Builder#setState
*/
public final static int STATE_SKIPPING_TO_QUEUE_ITEM = 11;
/**
* Use this value for the position to indicate the position is not known.
*/
public final static long PLAYBACK_POSITION_UNKNOWN = -1;
private final int mState;
private final long mPosition;
private final long mBufferedPosition;
private final float mSpeed;
private final long mActions;
private List<PlaybackState.CustomAction> mCustomActions;
private final CharSequence mErrorMessage;
private final long mUpdateTime;
private final long mActiveItemId;
private final Bundle mExtras;
private PlaybackState(int state, long position, long updateTime, float speed,
long bufferedPosition, long transportControls,
List<PlaybackState.CustomAction> customActions, long activeItemId,
CharSequence error, Bundle extras) {
mState = state;
mPosition = position;
mSpeed = speed;
mUpdateTime = updateTime;
mBufferedPosition = bufferedPosition;
mActions = transportControls;
mCustomActions = new ArrayList<>(customActions);
mActiveItemId = activeItemId;
mErrorMessage = error;
mExtras = extras;
}
private PlaybackState(Parcel in) {
mState = in.readInt();
mPosition = in.readLong();
mSpeed = in.readFloat();
mUpdateTime = in.readLong();
mBufferedPosition = in.readLong();
mActions = in.readLong();
mCustomActions = in.createTypedArrayList(CustomAction.CREATOR);
mActiveItemId = in.readLong();
mErrorMessage = in.readCharSequence();
mExtras = in.readBundle();
}
@Override
public String toString() {
StringBuilder bob = new StringBuilder("PlaybackState {");
bob.append("state=").append(mState);
bob.append(", position=").append(mPosition);
bob.append(", buffered position=").append(mBufferedPosition);
bob.append(", speed=").append(mSpeed);
bob.append(", updated=").append(mUpdateTime);
bob.append(", actions=").append(mActions);
bob.append(", custom actions=").append(mCustomActions);
bob.append(", active item id=").append(mActiveItemId);
bob.append(", error=").append(mErrorMessage);
bob.append("}");
return bob.toString();
}
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeInt(mState);
dest.writeLong(mPosition);
dest.writeFloat(mSpeed);
dest.writeLong(mUpdateTime);
dest.writeLong(mBufferedPosition);
dest.writeLong(mActions);
dest.writeTypedList(mCustomActions);
dest.writeLong(mActiveItemId);
dest.writeCharSequence(mErrorMessage);
dest.writeBundle(mExtras);
}
/**
* Get the current state of playback. One of the following:
* <ul>
* <li> {@link PlaybackState#STATE_NONE}</li>
* <li> {@link PlaybackState#STATE_STOPPED}</li>
* <li> {@link PlaybackState#STATE_PLAYING}</li>
* <li> {@link PlaybackState#STATE_PAUSED}</li>
* <li> {@link PlaybackState#STATE_FAST_FORWARDING}</li>
* <li> {@link PlaybackState#STATE_REWINDING}</li>
* <li> {@link PlaybackState#STATE_BUFFERING}</li>
* <li> {@link PlaybackState#STATE_ERROR}</li>
* </ul>
*/
public int getState() {
return mState;
}
/**
* Get the current playback position in ms.
*/
public long getPosition() {
return mPosition;
}
/**
* Get the current buffered position in ms. This is the farthest playback
* point that can be reached from the current position using only buffered
* content.
*/
public long getBufferedPosition() {
return mBufferedPosition;
}
/**
* Get the current playback speed as a multiple of normal playback. This
* should be negative when rewinding. A value of 1 means normal playback and
* 0 means paused.
*
* @return The current speed of playback.
*/
public float getPlaybackSpeed() {
return mSpeed;
}
/**
* Get the current actions available on this session. This should use a
* bitmask of the available actions.
* <ul>
* <li> {@link PlaybackState#ACTION_SKIP_TO_PREVIOUS}</li>
* <li> {@link PlaybackState#ACTION_REWIND}</li>
* <li> {@link PlaybackState#ACTION_PLAY}</li>
* <li> {@link PlaybackState#ACTION_PAUSE}</li>
* <li> {@link PlaybackState#ACTION_STOP}</li>
* <li> {@link PlaybackState#ACTION_FAST_FORWARD}</li>
* <li> {@link PlaybackState#ACTION_SKIP_TO_NEXT}</li>
* <li> {@link PlaybackState#ACTION_SEEK_TO}</li>
* <li> {@link PlaybackState#ACTION_SET_RATING}</li>
* </ul>
*/
public long getActions() {
return mActions;
}
/**
* Get the list of custom actions.
*/
public List<PlaybackState.CustomAction> getCustomActions() {
return mCustomActions;
}
/**
* Get a user readable error message. This should be set when the state is
* {@link PlaybackState#STATE_ERROR}.
*/
public CharSequence getErrorMessage() {
return mErrorMessage;
}
/**
* Get the elapsed real time at which position was last updated. If the
* position has never been set this will return 0;
*
* @return The last time the position was updated.
*/
public long getLastPositionUpdateTime() {
return mUpdateTime;
}
/**
* Get the id of the currently active item in the queue. If there is no
* queue or a queue is not supported by the session this will be
* {@link MediaSession.QueueItem#UNKNOWN_ID}.
*
* @return The id of the currently active item in the queue or
* {@link MediaSession.QueueItem#UNKNOWN_ID}.
*/
public long getActiveQueueItemId() {
return mActiveItemId;
}
/**
* Get any custom extras that were set on this playback state.
*
* @return The extras for this state or null.
*/
public @Nullable Bundle getExtras() {
return mExtras;
}
/**
* Get the {@link PlaybackState} state for the given
* {@link RemoteControlClient} state.
*
* @param rccState The state used by {@link RemoteControlClient}.
* @return The equivalent state used by {@link PlaybackState}.
* @hide
*/
public static int getStateFromRccState(int rccState) {
switch (rccState) {
case RemoteControlClient.PLAYSTATE_BUFFERING:
return STATE_BUFFERING;
case RemoteControlClient.PLAYSTATE_ERROR:
return STATE_ERROR;
case RemoteControlClient.PLAYSTATE_FAST_FORWARDING:
return STATE_FAST_FORWARDING;
case RemoteControlClient.PLAYSTATE_NONE:
return STATE_NONE;
case RemoteControlClient.PLAYSTATE_PAUSED:
return STATE_PAUSED;
case RemoteControlClient.PLAYSTATE_PLAYING:
return STATE_PLAYING;
case RemoteControlClient.PLAYSTATE_REWINDING:
return STATE_REWINDING;
case RemoteControlClient.PLAYSTATE_SKIPPING_BACKWARDS:
return STATE_SKIPPING_TO_PREVIOUS;
case RemoteControlClient.PLAYSTATE_SKIPPING_FORWARDS:
return STATE_SKIPPING_TO_NEXT;
case RemoteControlClient.PLAYSTATE_STOPPED:
return STATE_STOPPED;
default:
return -1;
}
}
/**
* Get the {@link RemoteControlClient} state for the given
* {@link PlaybackState} state.
*
* @param state The state used by {@link PlaybackState}.
* @return The equivalent state used by {@link RemoteControlClient}.
* @hide
*/
public static int getRccStateFromState(int state) {
switch (state) {
case STATE_BUFFERING:
return RemoteControlClient.PLAYSTATE_BUFFERING;
case STATE_ERROR:
return RemoteControlClient.PLAYSTATE_ERROR;
case STATE_FAST_FORWARDING:
return RemoteControlClient.PLAYSTATE_FAST_FORWARDING;
case STATE_NONE:
return RemoteControlClient.PLAYSTATE_NONE;
case STATE_PAUSED:
return RemoteControlClient.PLAYSTATE_PAUSED;
case STATE_PLAYING:
return RemoteControlClient.PLAYSTATE_PLAYING;
case STATE_REWINDING:
return RemoteControlClient.PLAYSTATE_REWINDING;
case STATE_SKIPPING_TO_PREVIOUS:
return RemoteControlClient.PLAYSTATE_SKIPPING_BACKWARDS;
case STATE_SKIPPING_TO_NEXT:
return RemoteControlClient.PLAYSTATE_SKIPPING_FORWARDS;
case STATE_STOPPED:
return RemoteControlClient.PLAYSTATE_STOPPED;
default:
return -1;
}
}
/**
* @hide
*/
public static long getActionsFromRccControlFlags(int rccFlags) {
long actions = 0;
long flag = 1;
while (flag <= rccFlags) {
if ((flag & rccFlags) != 0) {
actions |= getActionForRccFlag((int) flag);
}
flag = flag << 1;
}
return actions;
}
/**
* @hide
*/
public static int getRccControlFlagsFromActions(long actions) {
int rccFlags = 0;
long action = 1;
while (action <= actions && action < Integer.MAX_VALUE) {
if ((action & actions) != 0) {
rccFlags |= getRccFlagForAction(action);
}
action = action << 1;
}
return rccFlags;
}
private static long getActionForRccFlag(int flag) {
switch (flag) {
case RemoteControlClient.FLAG_KEY_MEDIA_PREVIOUS:
return ACTION_SKIP_TO_PREVIOUS;
case RemoteControlClient.FLAG_KEY_MEDIA_REWIND:
return ACTION_REWIND;
case RemoteControlClient.FLAG_KEY_MEDIA_PLAY:
return ACTION_PLAY;
case RemoteControlClient.FLAG_KEY_MEDIA_PLAY_PAUSE:
return ACTION_PLAY_PAUSE;
case RemoteControlClient.FLAG_KEY_MEDIA_PAUSE:
return ACTION_PAUSE;
case RemoteControlClient.FLAG_KEY_MEDIA_STOP:
return ACTION_STOP;
case RemoteControlClient.FLAG_KEY_MEDIA_FAST_FORWARD:
return ACTION_FAST_FORWARD;
case RemoteControlClient.FLAG_KEY_MEDIA_NEXT:
return ACTION_SKIP_TO_NEXT;
case RemoteControlClient.FLAG_KEY_MEDIA_POSITION_UPDATE:
return ACTION_SEEK_TO;
case RemoteControlClient.FLAG_KEY_MEDIA_RATING:
return ACTION_SET_RATING;
}
return 0;
}
private static int getRccFlagForAction(long action) {
// We only care about the lower set of actions that can map to rcc
// flags.
int testAction = action < Integer.MAX_VALUE ? (int) action : 0;
switch (testAction) {
case (int) ACTION_SKIP_TO_PREVIOUS:
return RemoteControlClient.FLAG_KEY_MEDIA_PREVIOUS;
case (int) ACTION_REWIND:
return RemoteControlClient.FLAG_KEY_MEDIA_REWIND;
case (int) ACTION_PLAY:
return RemoteControlClient.FLAG_KEY_MEDIA_PLAY;
case (int) ACTION_PLAY_PAUSE:
return RemoteControlClient.FLAG_KEY_MEDIA_PLAY_PAUSE;
case (int) ACTION_PAUSE:
return RemoteControlClient.FLAG_KEY_MEDIA_PAUSE;
case (int) ACTION_STOP:
return RemoteControlClient.FLAG_KEY_MEDIA_STOP;
case (int) ACTION_FAST_FORWARD:
return RemoteControlClient.FLAG_KEY_MEDIA_FAST_FORWARD;
case (int) ACTION_SKIP_TO_NEXT:
return RemoteControlClient.FLAG_KEY_MEDIA_NEXT;
case (int) ACTION_SEEK_TO:
return RemoteControlClient.FLAG_KEY_MEDIA_POSITION_UPDATE;
case (int) ACTION_SET_RATING:
return RemoteControlClient.FLAG_KEY_MEDIA_RATING;
}
return 0;
}
public static final Parcelable.Creator<PlaybackState> CREATOR =
new Parcelable.Creator<PlaybackState>() {
@Override
public PlaybackState createFromParcel(Parcel in) {
return new PlaybackState(in);
}
@Override
public PlaybackState[] newArray(int size) {
return new PlaybackState[size];
}
};
/**
* {@link PlaybackState.CustomAction CustomActions} can be used to extend the capabilities of
* the standard transport controls by exposing app specific actions to
* {@link MediaController MediaControllers}.
*/
public static final class CustomAction implements Parcelable {
private final String mAction;
private final CharSequence mName;
private final int mIcon;
private final Bundle mExtras;
/**
* Use {@link PlaybackState.CustomAction.Builder#build()}.
*/
private CustomAction(String action, CharSequence name, int icon, Bundle extras) {
mAction = action;
mName = name;
mIcon = icon;
mExtras = extras;
}
private CustomAction(Parcel in) {
mAction = in.readString();
mName = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
mIcon = in.readInt();
mExtras = in.readBundle();
}
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeString(mAction);
TextUtils.writeToParcel(mName, dest, flags);
dest.writeInt(mIcon);
dest.writeBundle(mExtras);
}
@Override
public int describeContents() {
return 0;
}
public static final Parcelable.Creator<PlaybackState.CustomAction> CREATOR
= new Parcelable.Creator<PlaybackState.CustomAction>() {
@Override
public PlaybackState.CustomAction createFromParcel(Parcel p) {
return new PlaybackState.CustomAction(p);
}
@Override
public PlaybackState.CustomAction[] newArray(int size) {
return new PlaybackState.CustomAction[size];
}
};
/**
* Returns the action of the {@link CustomAction}.
*
* @return The action of the {@link CustomAction}.
*/
public String getAction() {
return mAction;
}
/**
* Returns the display name of this action. e.g. "Favorite"
*
* @return The display name of this {@link CustomAction}.
*/
public CharSequence getName() {
return mName;
}
/**
* Returns the resource id of the icon in the {@link MediaSession MediaSession's} package.
*
* @return The resource id of the icon in the {@link MediaSession MediaSession's} package.
*/
public int getIcon() {
return mIcon;
}
/**
* Returns extras which provide additional application-specific information about the
* action, or null if none. These arguments are meant to be consumed by a
* {@link MediaController} if it knows how to handle them.
*
* @return Optional arguments for the {@link CustomAction}.
*/
public Bundle getExtras() {
return mExtras;
}
@Override
public String toString() {
return "Action:" +
"mName='" + mName +
", mIcon=" + mIcon +
", mExtras=" + mExtras;
}
/**
* Builder for {@link CustomAction} objects.
*/
public static final class Builder {
private final String mAction;
private final CharSequence mName;
private final int mIcon;
private Bundle mExtras;
/**
* Creates a {@link CustomAction} builder with the id, name, and icon set.
*
* @param action The action of the {@link CustomAction}.
* @param name The display name of the {@link CustomAction}. This name will be displayed
* along side the action if the UI supports it.
* @param icon The icon resource id of the {@link CustomAction}. This resource id
* must be in the same package as the {@link MediaSession}. It will be
* displayed with the custom action if the UI supports it.
*/
public Builder(String action, CharSequence name, @DrawableRes int icon) {
if (TextUtils.isEmpty(action)) {
throw new IllegalArgumentException(
"You must specify an action to build a CustomAction.");
}
if (TextUtils.isEmpty(name)) {
throw new IllegalArgumentException(
"You must specify a name to build a CustomAction.");
}
if (icon == 0) {
throw new IllegalArgumentException(
"You must specify an icon resource id to build a CustomAction.");
}
mAction = action;
mName = name;
mIcon = icon;
}
/**
* Set optional extras for the {@link CustomAction}. These extras are meant to be
* consumed by a {@link MediaController} if it knows how to handle them.
* Keys should be fully qualified (e.g. "com.example.MY_ARG") to avoid collisions.
*
* @param extras Optional extras for the {@link CustomAction}.
* @return this.
*/
public Builder setExtras(Bundle extras) {
mExtras = extras;
return this;
}
/**
* Build and return the {@link CustomAction} instance with the specified values.
*
* @return A new {@link CustomAction} instance.
*/
public CustomAction build() {
return new CustomAction(mAction, mName, mIcon, mExtras);
}
}
}
/**
* Builder for {@link PlaybackState} objects.
*/
public static final class Builder {
private final List<PlaybackState.CustomAction> mCustomActions = new ArrayList<>();
private int mState;
private long mPosition;
private long mBufferedPosition;
private float mSpeed;
private long mActions;
private CharSequence mErrorMessage;
private long mUpdateTime;
private long mActiveItemId = MediaSession.QueueItem.UNKNOWN_ID;
private Bundle mExtras;
/**
* Creates an initially empty state builder.
*/
public Builder() {
}
/**
* Creates a builder with the same initial values as those in the from
* state.
*
* @param from The state to use for initializing the builder.
*/
public Builder(PlaybackState from) {
if (from == null) {
return;
}
mState = from.mState;
mPosition = from.mPosition;
mBufferedPosition = from.mBufferedPosition;
mSpeed = from.mSpeed;
mActions = from.mActions;
if (from.mCustomActions != null) {
mCustomActions.addAll(from.mCustomActions);
}
mErrorMessage = from.mErrorMessage;
mUpdateTime = from.mUpdateTime;
mActiveItemId = from.mActiveItemId;
mExtras = from.mExtras;
}
/**
* Set the current state of playback.
* <p>
* The position must be in ms and indicates the current playback
* position within the item. If the position is unknown use
* {@link #PLAYBACK_POSITION_UNKNOWN}. When not using an unknown
* position the time at which the position was updated must be provided.
* It is okay to use {@link SystemClock#elapsedRealtime()} if the
* current position was just retrieved.
* <p>
* The speed is a multiple of normal playback and should be 0 when
* paused and negative when rewinding. Normal playback speed is 1.0.
* <p>
* The state must be one of the following:
* <ul>
* <li> {@link PlaybackState#STATE_NONE}</li>
* <li> {@link PlaybackState#STATE_STOPPED}</li>
* <li> {@link PlaybackState#STATE_PLAYING}</li>
* <li> {@link PlaybackState#STATE_PAUSED}</li>
* <li> {@link PlaybackState#STATE_FAST_FORWARDING}</li>
* <li> {@link PlaybackState#STATE_REWINDING}</li>
* <li> {@link PlaybackState#STATE_BUFFERING}</li>
* <li> {@link PlaybackState#STATE_ERROR}</li>
* </ul>
*
* @param state The current state of playback.
* @param position The position in the current item in ms.
* @param playbackSpeed The current speed of playback as a multiple of
* normal playback.
* @param updateTime The time in the {@link SystemClock#elapsedRealtime}
* timebase that the position was updated at.
* @return this
*/
public Builder setState(int state, long position, float playbackSpeed, long updateTime) {
mState = state;
mPosition = position;
mUpdateTime = updateTime;
mSpeed = playbackSpeed;
return this;
}
/**
* Set the current state of playback.
* <p>
* The position must be in ms and indicates the current playback
* position within the item. If the position is unknown use
* {@link #PLAYBACK_POSITION_UNKNOWN}. The update time will be set to
* the current {@link SystemClock#elapsedRealtime()}.
* <p>
* The speed is a multiple of normal playback and should be 0 when
* paused and negative when rewinding. Normal playback speed is 1.0.
* <p>
* The state must be one of the following:
* <ul>
* <li> {@link PlaybackState#STATE_NONE}</li>
* <li> {@link PlaybackState#STATE_STOPPED}</li>
* <li> {@link PlaybackState#STATE_PLAYING}</li>
* <li> {@link PlaybackState#STATE_PAUSED}</li>
* <li> {@link PlaybackState#STATE_FAST_FORWARDING}</li>
* <li> {@link PlaybackState#STATE_REWINDING}</li>
* <li> {@link PlaybackState#STATE_BUFFERING}</li>
* <li> {@link PlaybackState#STATE_ERROR}</li>
* </ul>
*
* @param state The current state of playback.
* @param position The position in the current item in ms.
* @param playbackSpeed The current speed of playback as a multiple of
* normal playback.
* @return this
*/
public Builder setState(int state, long position, float playbackSpeed) {
return setState(state, position, playbackSpeed, SystemClock.elapsedRealtime());
}
/**
* Set the current actions available on this session. This should use a
* bitmask of possible actions.
* <ul>
* <li> {@link PlaybackState#ACTION_SKIP_TO_PREVIOUS}</li>
* <li> {@link PlaybackState#ACTION_REWIND}</li>
* <li> {@link PlaybackState#ACTION_PLAY}</li>
* <li> {@link PlaybackState#ACTION_PAUSE}</li>
* <li> {@link PlaybackState#ACTION_STOP}</li>
* <li> {@link PlaybackState#ACTION_FAST_FORWARD}</li>
* <li> {@link PlaybackState#ACTION_SKIP_TO_NEXT}</li>
* <li> {@link PlaybackState#ACTION_SEEK_TO}</li>
* <li> {@link PlaybackState#ACTION_SET_RATING}</li>
* </ul>
*
* @param actions The set of actions allowed.
* @return this
*/
public Builder setActions(long actions) {
mActions = actions;
return this;
}
/**
* Add a custom action to the playback state. Actions can be used to
* expose additional functionality to {@link MediaController
* MediaControllers} beyond what is offered by the standard transport
* controls.
* <p>
* e.g. start a radio station based on the current item or skip ahead by
* 30 seconds.
*
* @param action An identifier for this action. It can be sent back to
* the {@link MediaSession} through
* {@link MediaController.TransportControls#sendCustomAction(String, Bundle)}.
* @param name The display name for the action. If text is shown with
* the action or used for accessibility, this is what should
* be used.
* @param icon The resource action of the icon that should be displayed
* for the action. The resource should be in the package of
* the {@link MediaSession}.
* @return this
*/
public Builder addCustomAction(String action, String name, int icon) {
return addCustomAction(new PlaybackState.CustomAction(action, name, icon, null));
}
/**
* Add a custom action to the playback state. Actions can be used to expose additional
* functionality to {@link MediaController MediaControllers} beyond what is offered by the
* standard transport controls.
* <p>
* An example of an action would be to start a radio station based on the current item
* or to skip ahead by 30 seconds.
*
* @param customAction The custom action to add to the {@link PlaybackState}.
* @return this
*/
public Builder addCustomAction(PlaybackState.CustomAction customAction) {
if (customAction == null) {
throw new IllegalArgumentException(
"You may not add a null CustomAction to PlaybackState.");
}
mCustomActions.add(customAction);
return this;
}
/**
* Set the current buffered position in ms. This is the farthest
* playback point that can be reached from the current position using
* only buffered content.
*
* @param bufferedPosition The position in ms that playback is buffered
* to.
* @return this
*/
public Builder setBufferedPosition(long bufferedPosition) {
mBufferedPosition = bufferedPosition;
return this;
}
/**
* Set the active item in the play queue by specifying its id. The
* default value is {@link MediaSession.QueueItem#UNKNOWN_ID}
*
* @param id The id of the active item.
* @return this
*/
public Builder setActiveQueueItemId(long id) {
mActiveItemId = id;
return this;
}
/**
* Set a user readable error message. This should be set when the state
* is {@link PlaybackState#STATE_ERROR}.
*
* @param error The error message for display to the user.
* @return this
*/
public Builder setErrorMessage(CharSequence error) {
mErrorMessage = error;
return this;
}
/**
* Set any custom extras to be included with the playback state.
*
* @param extras The extras to include.
* @return this
*/
public Builder setExtras(Bundle extras) {
mExtras = extras;
return this;
}
/**
* Build and return the {@link PlaybackState} instance with these
* values.
*
* @return A new state instance.
*/
public PlaybackState build() {
return new PlaybackState(mState, mPosition, mUpdateTime, mSpeed, mBufferedPosition,
mActions, mCustomActions, mActiveItemId, mErrorMessage, mExtras);
}
}
}
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