InCallService.java revision 1418054108e3811db80e28496b335514b51b10f4
1/* 2 * Copyright (C) 2013 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.telecom; 18 19import android.annotation.SdkConstant; 20import android.annotation.SystemApi; 21import android.app.Service; 22import android.content.Intent; 23import android.os.Handler; 24import android.os.IBinder; 25import android.os.Looper; 26import android.os.Message; 27import android.view.Surface; 28 29import com.android.internal.os.SomeArgs; 30import com.android.internal.telecom.IInCallAdapter; 31import com.android.internal.telecom.IInCallService; 32 33import java.lang.String; 34import java.util.Collections; 35import java.util.List; 36 37/** 38 * This service is implemented by any app that wishes to provide the user-interface for managing 39 * phone calls. Telecom binds to this service while there exists a live (active or incoming) call, 40 * and uses it to notify the in-call app of any live and and recently disconnected calls. 41 */ 42public abstract class InCallService extends Service { 43 44 /** 45 * The {@link Intent} that must be declared as handled by the service. 46 */ 47 @SdkConstant(SdkConstant.SdkConstantType.SERVICE_ACTION) 48 public static final String SERVICE_INTERFACE = "android.telecom.InCallService"; 49 50 private static final int MSG_SET_IN_CALL_ADAPTER = 1; 51 private static final int MSG_ADD_CALL = 2; 52 private static final int MSG_UPDATE_CALL = 3; 53 private static final int MSG_SET_POST_DIAL_WAIT = 4; 54 private static final int MSG_ON_AUDIO_STATE_CHANGED = 5; 55 private static final int MSG_BRING_TO_FOREGROUND = 6; 56 private static final int MSG_ON_CAN_ADD_CALL_CHANGED = 7; 57 58 /** Default Handler used to consolidate binder method calls onto a single thread. */ 59 private final Handler mHandler = new Handler(Looper.getMainLooper()) { 60 @Override 61 public void handleMessage(Message msg) { 62 if (mPhone == null && msg.what != MSG_SET_IN_CALL_ADAPTER) { 63 return; 64 } 65 66 switch (msg.what) { 67 case MSG_SET_IN_CALL_ADAPTER: 68 mPhone = new Phone(new InCallAdapter((IInCallAdapter) msg.obj)); 69 mPhone.addListener(mPhoneListener); 70 onPhoneCreated(mPhone); 71 break; 72 case MSG_ADD_CALL: 73 mPhone.internalAddCall((ParcelableCall) msg.obj); 74 break; 75 case MSG_UPDATE_CALL: 76 mPhone.internalUpdateCall((ParcelableCall) msg.obj); 77 break; 78 case MSG_SET_POST_DIAL_WAIT: { 79 SomeArgs args = (SomeArgs) msg.obj; 80 try { 81 String callId = (String) args.arg1; 82 String remaining = (String) args.arg2; 83 mPhone.internalSetPostDialWait(callId, remaining); 84 } finally { 85 args.recycle(); 86 } 87 break; 88 } 89 case MSG_ON_AUDIO_STATE_CHANGED: 90 mPhone.internalAudioStateChanged((AudioState) msg.obj); 91 break; 92 case MSG_BRING_TO_FOREGROUND: 93 mPhone.internalBringToForeground(msg.arg1 == 1); 94 break; 95 case MSG_ON_CAN_ADD_CALL_CHANGED: 96 mPhone.internalSetCanAddCall(msg.arg1 == 1); 97 break; 98 default: 99 break; 100 } 101 } 102 }; 103 104 /** Manages the binder calls so that the implementor does not need to deal with it. */ 105 private final class InCallServiceBinder extends IInCallService.Stub { 106 @Override 107 public void setInCallAdapter(IInCallAdapter inCallAdapter) { 108 mHandler.obtainMessage(MSG_SET_IN_CALL_ADAPTER, inCallAdapter).sendToTarget(); 109 } 110 111 @Override 112 public void addCall(ParcelableCall call) { 113 mHandler.obtainMessage(MSG_ADD_CALL, call).sendToTarget(); 114 } 115 116 @Override 117 public void updateCall(ParcelableCall call) { 118 mHandler.obtainMessage(MSG_UPDATE_CALL, call).sendToTarget(); 119 } 120 121 @Override 122 public void setPostDial(String callId, String remaining) { 123 // TODO: Unused 124 } 125 126 @Override 127 public void setPostDialWait(String callId, String remaining) { 128 SomeArgs args = SomeArgs.obtain(); 129 args.arg1 = callId; 130 args.arg2 = remaining; 131 mHandler.obtainMessage(MSG_SET_POST_DIAL_WAIT, args).sendToTarget(); 132 } 133 134 @Override 135 public void onAudioStateChanged(AudioState audioState) { 136 mHandler.obtainMessage(MSG_ON_AUDIO_STATE_CHANGED, audioState).sendToTarget(); 137 } 138 139 @Override 140 public void bringToForeground(boolean showDialpad) { 141 mHandler.obtainMessage(MSG_BRING_TO_FOREGROUND, showDialpad ? 1 : 0, 0).sendToTarget(); 142 } 143 144 @Override 145 public void onCanAddCallChanged(boolean canAddCall) { 146 mHandler.obtainMessage(MSG_ON_CAN_ADD_CALL_CHANGED, canAddCall ? 1 : 0, 0) 147 .sendToTarget(); 148 } 149 } 150 151 private Phone.Listener mPhoneListener = new Phone.Listener() { 152 /** ${inheritDoc} */ 153 @Override 154 public void onAudioStateChanged(Phone phone, AudioState audioState) { 155 InCallService.this.onAudioStateChanged(audioState); 156 } 157 158 /** ${inheritDoc} */ 159 @Override 160 public void onBringToForeground(Phone phone, boolean showDialpad) { 161 InCallService.this.onBringToForeground(showDialpad); 162 } 163 164 /** ${inheritDoc} */ 165 @Override 166 public void onCallAdded(Phone phone, Call call) { 167 InCallService.this.onCallAdded(call); 168 } 169 170 /** ${inheritDoc} */ 171 @Override 172 public void onCallRemoved(Phone phone, Call call) { 173 InCallService.this.onCallRemoved(call); 174 } 175 176 /** ${inheritDoc} */ 177 @Override 178 public void onCanAddCallChanged(Phone phone, boolean canAddCall) { 179 InCallService.this.onCanAddCallChanged(canAddCall); 180 } 181 182 }; 183 184 private Phone mPhone; 185 186 public InCallService() { 187 } 188 189 @Override 190 public IBinder onBind(Intent intent) { 191 return new InCallServiceBinder(); 192 } 193 194 @Override 195 public boolean onUnbind(Intent intent) { 196 if (mPhone != null) { 197 Phone oldPhone = mPhone; 198 mPhone = null; 199 200 oldPhone.destroy(); 201 // destroy sets all the calls to disconnected if any live ones still exist. Therefore, 202 // it is important to remove the Listener *after* the call to destroy so that 203 // InCallService.on* callbacks are appropriately called. 204 oldPhone.removeListener(mPhoneListener); 205 206 onPhoneDestroyed(oldPhone); 207 } 208 209 return false; 210 } 211 212 /** 213 * Obtain the {@code Phone} associated with this {@code InCallService}. 214 * 215 * @return The {@code Phone} object associated with this {@code InCallService}, or {@code null} 216 * if the {@code InCallService} is not in a state where it has an associated 217 * {@code Phone}. 218 * @hide 219 * @deprecated Use direct methods on InCallService instead of {@link Phone}. 220 */ 221 @SystemApi 222 @Deprecated 223 public Phone getPhone() { 224 return mPhone; 225 } 226 227 /** 228 * Obtains the current list of {@code Call}s to be displayed by this in-call experience. 229 * 230 * @return A list of the relevant {@code Call}s. 231 */ 232 public final List<Call> getCalls() { 233 return mPhone == null ? Collections.<Call>emptyList() : mPhone.getCalls(); 234 } 235 236 /** 237 * Returns if the device can support additional calls. 238 * 239 * @return Whether the phone supports adding more calls. 240 */ 241 public final boolean canAddCall() { 242 return mPhone == null ? false : mPhone.canAddCall(); 243 } 244 245 /** 246 * Obtains the current phone call audio state. 247 * 248 * @return An object encapsulating the audio state. Returns null if the service is not 249 * fully initialized. 250 */ 251 public final AudioState getAudioState() { 252 return mPhone == null ? null : mPhone.getAudioState(); 253 } 254 255 /** 256 * Sets the microphone mute state. When this request is honored, there will be change to 257 * the {@link #getAudioState()}. 258 * 259 * @param state {@code true} if the microphone should be muted; {@code false} otherwise. 260 */ 261 public final void setMuted(boolean state) { 262 if (mPhone != null) { 263 mPhone.setMuted(state); 264 } 265 } 266 267 /** 268 * Sets the audio route (speaker, bluetooth, etc...). When this request is honored, there will 269 * be change to the {@link #getAudioState()}. 270 * 271 * @param route The audio route to use. 272 */ 273 public final void setAudioRoute(int route) { 274 if (mPhone != null) { 275 mPhone.setAudioRoute(route); 276 } 277 } 278 279 /** 280 * Invoked when the {@code Phone} has been created. This is a signal to the in-call experience 281 * to start displaying in-call information to the user. Each instance of {@code InCallService} 282 * will have only one {@code Phone}, and this method will be called exactly once in the lifetime 283 * of the {@code InCallService}. 284 * 285 * @param phone The {@code Phone} object associated with this {@code InCallService}. 286 * @hide 287 * @deprecated Use direct methods on InCallService instead of {@link Phone}. 288 */ 289 @SystemApi 290 @Deprecated 291 public void onPhoneCreated(Phone phone) { 292 } 293 294 /** 295 * Invoked when a {@code Phone} has been destroyed. This is a signal to the in-call experience 296 * to stop displaying in-call information to the user. This method will be called exactly once 297 * in the lifetime of the {@code InCallService}, and it will always be called after a previous 298 * call to {@link #onPhoneCreated(Phone)}. 299 * 300 * @param phone The {@code Phone} object associated with this {@code InCallService}. 301 * @hide 302 * @deprecated Use direct methods on InCallService instead of {@link Phone}. 303 */ 304 @SystemApi 305 @Deprecated 306 public void onPhoneDestroyed(Phone phone) { 307 } 308 309 /** 310 * Called when the audio state changes. 311 * 312 * @param audioState The new {@link AudioState}. 313 */ 314 public void onAudioStateChanged(AudioState audioState) { 315 } 316 317 /** 318 * Called to bring the in-call screen to the foreground. The in-call experience should 319 * respond immediately by coming to the foreground to inform the user of the state of 320 * ongoing {@code Call}s. 321 * 322 * @param showDialpad If true, put up the dialpad when the screen is shown. 323 */ 324 public void onBringToForeground(boolean showDialpad) { 325 } 326 327 /** 328 * Called when a {@code Call} has been added to this in-call session. The in-call user 329 * experience should add necessary state listeners to the specified {@code Call} and 330 * immediately start to show the user information about the existence 331 * and nature of this {@code Call}. Subsequent invocations of {@link #getCalls()} will 332 * include this {@code Call}. 333 * 334 * @param call A newly added {@code Call}. 335 */ 336 public void onCallAdded(Call call) { 337 } 338 339 /** 340 * Called when a {@code Call} has been removed from this in-call session. The in-call user 341 * experience should remove any state listeners from the specified {@code Call} and 342 * immediately stop displaying any information about this {@code Call}. 343 * Subsequent invocations of {@link #getCalls()} will no longer include this {@code Call}. 344 * 345 * @param call A newly removed {@code Call}. 346 */ 347 public void onCallRemoved(Call call) { 348 } 349 350 /** 351 * Called when the ability to add more calls changes. If the phone cannot 352 * support more calls then {@code canAddCall} is set to {@code false}. If it can, then it 353 * is set to {@code true}. This can be used to control the visibility of UI to add more calls. 354 * 355 * @param canAddCall Indicates whether an additional call can be added. 356 */ 357 public void onCanAddCallChanged(boolean canAddCall) { 358 } 359 360 /** 361 * Class to invoke functionality related to video calls. 362 */ 363 public static abstract class VideoCall { 364 365 /** 366 * Registers a callback to receive commands and state changes for video calls. 367 * 368 * @param callback The video call callback. 369 */ 370 public abstract void registerCallback(VideoCall.Callback callback); 371 372 /** 373 * Clears the video call listener set via {@link #setVideoCallListener(Listener)}. 374 */ 375 public abstract void unregisterCallback(); 376 377 /** 378 * Sets the camera to be used for video recording in a video call. 379 * 380 * @param cameraId The id of the camera. 381 */ 382 public abstract void setCamera(String cameraId); 383 384 /** 385 * Sets the surface to be used for displaying a preview of what the user's camera is 386 * currently capturing. When video transmission is enabled, this is the video signal which 387 * is sent to the remote device. 388 * 389 * @param surface The surface. 390 */ 391 public abstract void setPreviewSurface(Surface surface); 392 393 /** 394 * Sets the surface to be used for displaying the video received from the remote device. 395 * 396 * @param surface The surface. 397 */ 398 public abstract void setDisplaySurface(Surface surface); 399 400 /** 401 * Sets the device orientation, in degrees. Assumes that a standard portrait orientation of 402 * the device is 0 degrees. 403 * 404 * @param rotation The device orientation, in degrees. 405 */ 406 public abstract void setDeviceOrientation(int rotation); 407 408 /** 409 * Sets camera zoom ratio. 410 * 411 * @param value The camera zoom ratio. 412 */ 413 public abstract void setZoom(float value); 414 415 /** 416 * Issues a request to modify the properties of the current session. The request is sent to 417 * the remote device where it it handled by 418 * {@link VideoCall.Callback#onSessionModifyRequestReceived}. 419 * Some examples of session modification requests: upgrade call from audio to video, 420 * downgrade call from video to audio, pause video. 421 * 422 * @param requestProfile The requested call video properties. 423 */ 424 public abstract void sendSessionModifyRequest(VideoProfile requestProfile); 425 426 /** 427 * Provides a response to a request to change the current call session video 428 * properties. 429 * This is in response to a request the InCall UI has received via 430 * {@link VideoCall.Callback#onSessionModifyRequestReceived}. 431 * The response is handled on the remove device by 432 * {@link VideoCall.Callback#onSessionModifyResponseReceived}. 433 * 434 * @param responseProfile The response call video properties. 435 */ 436 public abstract void sendSessionModifyResponse(VideoProfile responseProfile); 437 438 /** 439 * Issues a request to the video provider to retrieve the camera capabilities. 440 * Camera capabilities are reported back to the caller via 441 * {@link VideoCall.Callback#onCameraCapabilitiesChanged(CameraCapabilities)}. 442 */ 443 public abstract void requestCameraCapabilities(); 444 445 /** 446 * Issues a request to the video telephony framework to retrieve the cumulative data usage for 447 * the current call. Data usage is reported back to the caller via 448 * {@link VideoCall.Callback#onCallDataUsageChanged}. 449 */ 450 public abstract void requestCallDataUsage(); 451 452 /** 453 * Provides the video telephony framework with the URI of an image to be displayed to remote 454 * devices when the video signal is paused. 455 * 456 * @param uri URI of image to display. 457 */ 458 public abstract void setPauseImage(String uri); 459 460 /** 461 * Callback class which invokes callbacks after video call actions occur. 462 */ 463 public static abstract class Callback { 464 /** 465 * Called when a session modification request is received from the remote device. 466 * The remote request is sent via 467 * {@link Connection.VideoProvider#onSendSessionModifyRequest}. The InCall UI 468 * is responsible for potentially prompting the user whether they wish to accept the new 469 * call profile (e.g. prompt user if they wish to accept an upgrade from an audio to a 470 * video call) and should call 471 * {@link Connection.VideoProvider#onSendSessionModifyResponse} to indicate 472 * the video settings the user has agreed to. 473 * 474 * @param videoProfile The requested video call profile. 475 */ 476 public abstract void onSessionModifyRequestReceived(VideoProfile videoProfile); 477 478 /** 479 * Called when a response to a session modification request is received from the remote 480 * device. The remote InCall UI sends the response using 481 * {@link Connection.VideoProvider#onSendSessionModifyResponse}. 482 * 483 * @param status Status of the session modify request. Valid values are 484 * {@link Connection.VideoProvider#SESSION_MODIFY_REQUEST_SUCCESS}, 485 * {@link Connection.VideoProvider#SESSION_MODIFY_REQUEST_FAIL}, 486 * {@link Connection.VideoProvider#SESSION_MODIFY_REQUEST_INVALID} 487 * @param requestedProfile The original request which was sent to the remote device. 488 * @param responseProfile The actual profile changes made by the remote device. 489 */ 490 public abstract void onSessionModifyResponseReceived(int status, 491 VideoProfile requestedProfile, VideoProfile responseProfile); 492 493 /** 494 * Handles events related to the current session which the client may wish to handle. 495 * These are separate from requested changes to the session due to the underlying 496 * protocol or connection. 497 * 498 * Valid values are: 499 * {@link Connection.VideoProvider#SESSION_EVENT_RX_PAUSE}, 500 * {@link Connection.VideoProvider#SESSION_EVENT_RX_RESUME}, 501 * {@link Connection.VideoProvider#SESSION_EVENT_TX_START}, 502 * {@link Connection.VideoProvider#SESSION_EVENT_TX_STOP}, 503 * {@link Connection.VideoProvider#SESSION_EVENT_CAMERA_FAILURE}, 504 * {@link Connection.VideoProvider#SESSION_EVENT_CAMERA_READY} 505 * 506 * @param event The event. 507 */ 508 public abstract void onCallSessionEvent(int event); 509 510 /** 511 * Handles a change to the video dimensions from the remote caller (peer). This could 512 * happen if, for example, the peer changes orientation of their device. 513 * 514 * @param width The updated peer video width. 515 * @param height The updated peer video height. 516 */ 517 public abstract void onPeerDimensionsChanged(int width, int height); 518 519 /** 520 * Handles a change to the video quality. 521 * 522 * @param videoQuality The updated peer video quality. 523 */ 524 public abstract void onVideoQualityChanged(int videoQuality); 525 526 /** 527 * Handles an update to the total data used for the current session. 528 * 529 * @param dataUsage The updated data usage. 530 */ 531 public abstract void onCallDataUsageChanged(long dataUsage); 532 533 /** 534 * Handles a change in camera capabilities. 535 * 536 * @param cameraCapabilities The changed camera capabilities. 537 */ 538 public abstract void onCameraCapabilitiesChanged(CameraCapabilities cameraCapabilities); 539 } 540 } 541} 542