| /* |
| * Copyright (C) 2006 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; |
| |
| |
| /* IF YOU CHANGE ANY OF THE CONSTANTS IN THIS FILE, DO NOT FORGET |
| * TO UPDATE THE CORRESPONDING NATIVE GLUE. THANK YOU FOR YOUR COOPERATION |
| */ |
| |
| /** |
| * @hide |
| */ |
| public class AudioSystem |
| { |
| /* FIXME: Need to finalize this and correlate with native layer */ |
| /* |
| * If these are modified, please also update Settings.System.VOLUME_SETTINGS |
| * and attrs.xml |
| */ |
| /* The audio stream for phone calls */ |
| public static final int STREAM_VOICE_CALL = 0; |
| /* The audio stream for system sounds */ |
| public static final int STREAM_SYSTEM = 1; |
| /* The audio stream for the phone ring and message alerts */ |
| public static final int STREAM_RING = 2; |
| /* The audio stream for music playback */ |
| public static final int STREAM_MUSIC = 3; |
| /* The audio stream for alarms */ |
| public static final int STREAM_ALARM = 4; |
| /* The audio stream for notifications */ |
| public static final int STREAM_NOTIFICATION = 5; |
| /** |
| * @deprecated Use {@link #numStreamTypes() instead} |
| */ |
| public static final int NUM_STREAMS = 5; |
| |
| // Expose only the getter method publicly so we can change it in the future |
| private static final int NUM_STREAM_TYPES = 6; |
| public static final int getNumStreamTypes() { return NUM_STREAM_TYPES; } |
| |
| /* max and min volume levels */ |
| /* Maximum volume setting, for use with setVolume(int,int) */ |
| public static final int MAX_VOLUME = 100; |
| /* Minimum volume setting, for use with setVolume(int,int) */ |
| public static final int MIN_VOLUME = 0; |
| |
| /* |
| * Sets the volume of a specified audio stream. |
| * |
| * param type the stream type to set the volume of (e.g. STREAM_MUSIC) |
| * param volume the volume level to set (0-100) |
| * return command completion status see AUDIO_STATUS_OK, see AUDIO_STATUS_ERROR |
| */ |
| public static native int setVolume(int type, int volume); |
| |
| /* |
| * Returns the volume of a specified audio stream. |
| * |
| * param type the stream type to get the volume of (e.g. STREAM_MUSIC) |
| * return the current volume (0-100) |
| */ |
| public static native int getVolume(int type); |
| |
| /* |
| * Sets the microphone mute on or off. |
| * |
| * param on set <var>true</var> to mute the microphone; |
| * <var>false</var> to turn mute off |
| * return command completion status see AUDIO_STATUS_OK, see AUDIO_STATUS_ERROR |
| */ |
| public static native int muteMicrophone(boolean on); |
| |
| /* |
| * Checks whether the microphone mute is on or off. |
| * |
| * return true if microphone is muted, false if it's not |
| */ |
| public static native boolean isMicrophoneMuted(); |
| |
| /* |
| * Sets the audio mode. |
| * |
| * param mode the requested audio mode (NORMAL, RINGTONE, or IN_CALL). |
| * Informs the HAL about the current audio state so that |
| * it can route the audio appropriately. |
| * return command completion status see AUDIO_STATUS_OK, see AUDIO_STATUS_ERROR |
| */ |
| public static native int setMode(int mode); |
| |
| /* |
| * Returns the current audio mode. |
| * |
| * return the current audio mode (NORMAL, RINGTONE, or IN_CALL). |
| * Returns the current current audio state from the HAL. |
| */ |
| public static native int getMode(); |
| |
| /* modes for setMode/getMode/setRoute/getRoute */ |
| public static final int MODE_INVALID = -2; |
| public static final int MODE_CURRENT = -1; |
| public static final int MODE_NORMAL = 0; |
| public static final int MODE_RINGTONE = 1; |
| public static final int MODE_IN_CALL = 2; |
| public static final int NUM_MODES = 3; |
| |
| |
| /* Routing bits for setRouting/getRouting API */ |
| public static final int ROUTE_EARPIECE = (1 << 0); |
| public static final int ROUTE_SPEAKER = (1 << 1); |
| |
| /** @deprecated use {@link #ROUTE_BLUETOOTH_SCO} */ |
| @Deprecated public static final int ROUTE_BLUETOOTH = (1 << 2); |
| public static final int ROUTE_BLUETOOTH_SCO = (1 << 2); |
| public static final int ROUTE_HEADSET = (1 << 3); |
| public static final int ROUTE_BLUETOOTH_A2DP = (1 << 4); |
| public static final int ROUTE_ALL = 0xFFFFFFFF; |
| |
| /* |
| * Sets the audio routing for a specified mode |
| * |
| * param mode audio mode to change route. E.g., MODE_RINGTONE. |
| * param routes bit vector of routes requested, created from one or |
| * more of ROUTE_xxx types. Set bits indicate that route should be on |
| * param mask bit vector of routes to change, created from one or more of |
| * ROUTE_xxx types. Unset bits indicate the route should be left unchanged |
| * return command completion status see AUDIO_STATUS_OK, see AUDIO_STATUS_ERROR |
| */ |
| public static native int setRouting(int mode, int routes, int mask); |
| |
| /* |
| * Returns the current audio routing bit vector for a specified mode. |
| * |
| * param mode audio mode to change route (e.g., MODE_RINGTONE) |
| * return an audio route bit vector that can be compared with ROUTE_xxx |
| * bits |
| */ |
| public static native int getRouting(int mode); |
| |
| /* |
| * Checks whether any music is active. |
| * |
| * return true if any music tracks are active. |
| */ |
| public static native boolean isMusicActive(); |
| |
| /* |
| * Sets a generic audio configuration parameter. The use of these parameters |
| * are platform dependant, see libaudio |
| * |
| * ** Temporary interface - DO NOT USE |
| * |
| * TODO: Replace with a more generic key:value get/set mechanism |
| * |
| * param key name of parameter to set. Must not be null. |
| * param value value of parameter. Must not be null. |
| */ |
| public static native void setParameter(String key, String value); |
| |
| /* |
| private final static String TAG = "audio"; |
| |
| private void log(String msg) { |
| Log.d(TAG, "[AudioSystem] " + msg); |
| } |
| */ |
| |
| // These match the enum in libs/android_runtime/android_media_AudioSystem.cpp |
| /* Command sucessful or Media server restarted. see ErrorCallback */ |
| public static final int AUDIO_STATUS_OK = 0; |
| /* Command failed or unspecified audio error. see ErrorCallback */ |
| public static final int AUDIO_STATUS_ERROR = 1; |
| /* Media server died. see ErrorCallback */ |
| public static final int AUDIO_STATUS_SERVER_DIED = 100; |
| |
| private static ErrorCallback mErrorCallback; |
| |
| /* |
| * Handles the audio error callback. |
| */ |
| public interface ErrorCallback |
| { |
| /* |
| * Callback for audio server errors. |
| * param error error code: |
| * - AUDIO_STATUS_OK |
| * - AUDIO_STATUS_SERVER_DIED |
| * - UDIO_STATUS_ERROR |
| */ |
| void onError(int error); |
| }; |
| |
| /* |
| * Registers a callback to be invoked when an error occurs. |
| * param cb the callback to run |
| */ |
| public static void setErrorCallback(ErrorCallback cb) |
| { |
| mErrorCallback = cb; |
| } |
| |
| private static void errorCallbackFromNative(int error) |
| { |
| if (mErrorCallback != null) { |
| mErrorCallback.onError(error); |
| } |
| } |
| } |