Camera.java revision e7d3cd0a761c8a742858d8213d75b3313b21d054
1/* 2 * Copyright (C) 2008 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.hardware; 18 19import static android.system.OsConstants.*; 20 21import android.annotation.Nullable; 22import android.annotation.SdkConstant; 23import android.annotation.SdkConstant.SdkConstantType; 24import android.app.ActivityThread; 25import android.app.AppOpsManager; 26import android.content.Context; 27import android.graphics.ImageFormat; 28import android.graphics.Point; 29import android.graphics.Rect; 30import android.graphics.SurfaceTexture; 31import android.media.AudioAttributes; 32import android.media.IAudioService; 33import android.os.Handler; 34import android.os.IBinder; 35import android.os.Looper; 36import android.os.Message; 37import android.os.Process; 38import android.os.RemoteException; 39import android.os.ServiceManager; 40import android.renderscript.Allocation; 41import android.renderscript.Element; 42import android.renderscript.RSIllegalArgumentException; 43import android.renderscript.RenderScript; 44import android.renderscript.Type; 45import android.text.TextUtils; 46import android.util.Log; 47import android.view.Surface; 48import android.view.SurfaceHolder; 49 50import com.android.internal.annotations.GuardedBy; 51import com.android.internal.app.IAppOpsCallback; 52import com.android.internal.app.IAppOpsService; 53 54import java.io.IOException; 55import java.lang.ref.WeakReference; 56import java.util.ArrayList; 57import java.util.LinkedHashMap; 58import java.util.List; 59 60/** 61 * The Camera class is used to set image capture settings, start/stop preview, 62 * snap pictures, and retrieve frames for encoding for video. This class is a 63 * client for the Camera service, which manages the actual camera hardware. 64 * 65 * <p>To access the device camera, you must declare the 66 * {@link android.Manifest.permission#CAMERA} permission in your Android 67 * Manifest. Also be sure to include the 68 * <a href="{@docRoot}guide/topics/manifest/uses-feature-element.html"><uses-feature></a> 69 * manifest element to declare camera features used by your application. 70 * For example, if you use the camera and auto-focus feature, your Manifest 71 * should include the following:</p> 72 * <pre> <uses-permission android:name="android.permission.CAMERA" /> 73 * <uses-feature android:name="android.hardware.camera" /> 74 * <uses-feature android:name="android.hardware.camera.autofocus" /></pre> 75 * 76 * <p>To take pictures with this class, use the following steps:</p> 77 * 78 * <ol> 79 * <li>Obtain an instance of Camera from {@link #open(int)}. 80 * 81 * <li>Get existing (default) settings with {@link #getParameters()}. 82 * 83 * <li>If necessary, modify the returned {@link Camera.Parameters} object and call 84 * {@link #setParameters(Camera.Parameters)}. 85 * 86 * <li>Call {@link #setDisplayOrientation(int)} to ensure correct orientation of preview. 87 * 88 * <li><b>Important</b>: Pass a fully initialized {@link SurfaceHolder} to 89 * {@link #setPreviewDisplay(SurfaceHolder)}. Without a surface, the camera 90 * will be unable to start the preview. 91 * 92 * <li><b>Important</b>: Call {@link #startPreview()} to start updating the 93 * preview surface. Preview must be started before you can take a picture. 94 * 95 * <li>When you want, call {@link #takePicture(Camera.ShutterCallback, 96 * Camera.PictureCallback, Camera.PictureCallback, Camera.PictureCallback)} to 97 * capture a photo. Wait for the callbacks to provide the actual image data. 98 * 99 * <li>After taking a picture, preview display will have stopped. To take more 100 * photos, call {@link #startPreview()} again first. 101 * 102 * <li>Call {@link #stopPreview()} to stop updating the preview surface. 103 * 104 * <li><b>Important:</b> Call {@link #release()} to release the camera for 105 * use by other applications. Applications should release the camera 106 * immediately in {@link android.app.Activity#onPause()} (and re-{@link #open()} 107 * it in {@link android.app.Activity#onResume()}). 108 * </ol> 109 * 110 * <p>To quickly switch to video recording mode, use these steps:</p> 111 * 112 * <ol> 113 * <li>Obtain and initialize a Camera and start preview as described above. 114 * 115 * <li>Call {@link #unlock()} to allow the media process to access the camera. 116 * 117 * <li>Pass the camera to {@link android.media.MediaRecorder#setCamera(Camera)}. 118 * See {@link android.media.MediaRecorder} information about video recording. 119 * 120 * <li>When finished recording, call {@link #reconnect()} to re-acquire 121 * and re-lock the camera. 122 * 123 * <li>If desired, restart preview and take more photos or videos. 124 * 125 * <li>Call {@link #stopPreview()} and {@link #release()} as described above. 126 * </ol> 127 * 128 * <p>This class is not thread-safe, and is meant for use from one event thread. 129 * Most long-running operations (preview, focus, photo capture, etc) happen 130 * asynchronously and invoke callbacks as necessary. Callbacks will be invoked 131 * on the event thread {@link #open(int)} was called from. This class's methods 132 * must never be called from multiple threads at once.</p> 133 * 134 * <p class="caution"><strong>Caution:</strong> Different Android-powered devices 135 * may have different hardware specifications, such as megapixel ratings and 136 * auto-focus capabilities. In order for your application to be compatible with 137 * more devices, you should not make assumptions about the device camera 138 * specifications.</p> 139 * 140 * <div class="special reference"> 141 * <h3>Developer Guides</h3> 142 * <p>For more information about using cameras, read the 143 * <a href="{@docRoot}guide/topics/media/camera.html">Camera</a> developer guide.</p> 144 * </div> 145 * 146 * @deprecated We recommend using the new {@link android.hardware.camera2} API for new 147 * applications. 148 */ 149@Deprecated 150public class Camera { 151 private static final String TAG = "Camera"; 152 153 // These match the enums in frameworks/base/include/camera/Camera.h 154 private static final int CAMERA_MSG_ERROR = 0x001; 155 private static final int CAMERA_MSG_SHUTTER = 0x002; 156 private static final int CAMERA_MSG_FOCUS = 0x004; 157 private static final int CAMERA_MSG_ZOOM = 0x008; 158 private static final int CAMERA_MSG_PREVIEW_FRAME = 0x010; 159 private static final int CAMERA_MSG_VIDEO_FRAME = 0x020; 160 private static final int CAMERA_MSG_POSTVIEW_FRAME = 0x040; 161 private static final int CAMERA_MSG_RAW_IMAGE = 0x080; 162 private static final int CAMERA_MSG_COMPRESSED_IMAGE = 0x100; 163 private static final int CAMERA_MSG_RAW_IMAGE_NOTIFY = 0x200; 164 private static final int CAMERA_MSG_PREVIEW_METADATA = 0x400; 165 private static final int CAMERA_MSG_FOCUS_MOVE = 0x800; 166 167 private long mNativeContext; // accessed by native methods 168 private EventHandler mEventHandler; 169 private ShutterCallback mShutterCallback; 170 private PictureCallback mRawImageCallback; 171 private PictureCallback mJpegCallback; 172 private PreviewCallback mPreviewCallback; 173 private boolean mUsingPreviewAllocation; 174 private PictureCallback mPostviewCallback; 175 private AutoFocusCallback mAutoFocusCallback; 176 private AutoFocusMoveCallback mAutoFocusMoveCallback; 177 private OnZoomChangeListener mZoomListener; 178 private FaceDetectionListener mFaceListener; 179 private ErrorCallback mErrorCallback; 180 private boolean mOneShot; 181 private boolean mWithBuffer; 182 private boolean mFaceDetectionRunning = false; 183 private final Object mAutoFocusCallbackLock = new Object(); 184 185 private final Object mShutterSoundLock = new Object(); 186 // for AppOps 187 private @Nullable IAppOpsService mAppOps; 188 private IAppOpsCallback mAppOpsCallback; 189 @GuardedBy("mShutterSoundLock") 190 private boolean mHasAppOpsPlayAudio = true; 191 @GuardedBy("mShutterSoundLock") 192 private boolean mShutterSoundEnabledFromApp = true; 193 194 private static final int NO_ERROR = 0; 195 196 /** 197 * Broadcast Action: A new picture is taken by the camera, and the entry of 198 * the picture has been added to the media store. 199 * {@link android.content.Intent#getData} is URI of the picture. 200 * 201 * <p>In {@link android.os.Build.VERSION_CODES#N Android N} this broadcast was removed, and 202 * applications are recommended to use 203 * {@link android.app.job.JobInfo.Builder JobInfo.Builder}.{@link android.app.job.JobInfo.Builder#addTriggerContentUri} 204 * instead.</p> 205 * 206 * <p>In {@link android.os.Build.VERSION_CODES#O Android O} this broadcast has been brought 207 * back, but only for <em>registered</em> receivers. Apps that are actively running can 208 * again listen to the broadcast if they want an immediate clear signal about a picture 209 * being taken, however anything doing heavy work (or needing to be launched) as a result of 210 * this should still use JobScheduler.</p> 211 */ 212 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 213 public static final String ACTION_NEW_PICTURE = "android.hardware.action.NEW_PICTURE"; 214 215 /** 216 * Broadcast Action: A new video is recorded by the camera, and the entry 217 * of the video has been added to the media store. 218 * {@link android.content.Intent#getData} is URI of the video. 219 * 220 * <p>In {@link android.os.Build.VERSION_CODES#N Android N} this broadcast was removed, and 221 * applications are recommended to use 222 * {@link android.app.job.JobInfo.Builder JobInfo.Builder}.{@link android.app.job.JobInfo.Builder#addTriggerContentUri} 223 * instead.</p> 224 * 225 * <p>In {@link android.os.Build.VERSION_CODES#O Android O} this broadcast has been brought 226 * back, but only for <em>registered</em> receivers. Apps that are actively running can 227 * again listen to the broadcast if they want an immediate clear signal about a video 228 * being taken, however anything doing heavy work (or needing to be launched) as a result of 229 * this should still use JobScheduler.</p> 230 */ 231 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 232 public static final String ACTION_NEW_VIDEO = "android.hardware.action.NEW_VIDEO"; 233 234 /** 235 * Camera HAL device API version 1.0 236 * @hide 237 */ 238 public static final int CAMERA_HAL_API_VERSION_1_0 = 0x100; 239 240 /** 241 * A constant meaning the normal camera connect/open will be used. 242 */ 243 private static final int CAMERA_HAL_API_VERSION_NORMAL_CONNECT = -2; 244 245 /** 246 * Used to indicate HAL version un-specified. 247 */ 248 private static final int CAMERA_HAL_API_VERSION_UNSPECIFIED = -1; 249 250 /** 251 * Hardware face detection. It does not use much CPU. 252 */ 253 private static final int CAMERA_FACE_DETECTION_HW = 0; 254 255 /** 256 * Software face detection. It uses some CPU. 257 */ 258 private static final int CAMERA_FACE_DETECTION_SW = 1; 259 260 /** 261 * Returns the number of physical cameras available on this device. 262 * The return value of this method might change dynamically if the device 263 * supports external cameras and an external camera is connected or 264 * disconnected. 265 * 266 * If there is a 267 * {@link android.hardware.camera2.CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES_LOGICAL_MULTI_CAMERA 268 * logical multi-camera} in the system, to maintain app backward compatibility, this method will 269 * only expose one camera for every logical camera and underlying physical cameras group. 270 * Use camera2 API to see all cameras. 271 * 272 * @return total number of accessible camera devices, or 0 if there are no 273 * cameras or an error was encountered enumerating them. 274 */ 275 public native static int getNumberOfCameras(); 276 277 /** 278 * Returns the information about a particular camera. 279 * If {@link #getNumberOfCameras()} returns N, the valid id is 0 to N-1. 280 * 281 * @throws RuntimeException if an invalid ID is provided, or if there is an 282 * error retrieving the information (generally due to a hardware or other 283 * low-level failure). 284 */ 285 public static void getCameraInfo(int cameraId, CameraInfo cameraInfo) { 286 _getCameraInfo(cameraId, cameraInfo); 287 IBinder b = ServiceManager.getService(Context.AUDIO_SERVICE); 288 IAudioService audioService = IAudioService.Stub.asInterface(b); 289 try { 290 if (audioService.isCameraSoundForced()) { 291 // Only set this when sound is forced; otherwise let native code 292 // decide. 293 cameraInfo.canDisableShutterSound = false; 294 } 295 } catch (RemoteException e) { 296 Log.e(TAG, "Audio service is unavailable for queries"); 297 } 298 } 299 private native static void _getCameraInfo(int cameraId, CameraInfo cameraInfo); 300 301 /** 302 * Information about a camera 303 * 304 * @deprecated We recommend using the new {@link android.hardware.camera2} API for new 305 * applications. 306 */ 307 @Deprecated 308 public static class CameraInfo { 309 /** 310 * The facing of the camera is opposite to that of the screen. 311 */ 312 public static final int CAMERA_FACING_BACK = 0; 313 314 /** 315 * The facing of the camera is the same as that of the screen. 316 */ 317 public static final int CAMERA_FACING_FRONT = 1; 318 319 /** 320 * The direction that the camera faces. It should be 321 * CAMERA_FACING_BACK or CAMERA_FACING_FRONT. 322 */ 323 public int facing; 324 325 /** 326 * <p>The orientation of the camera image. The value is the angle that the 327 * camera image needs to be rotated clockwise so it shows correctly on 328 * the display in its natural orientation. It should be 0, 90, 180, or 270.</p> 329 * 330 * <p>For example, suppose a device has a naturally tall screen. The 331 * back-facing camera sensor is mounted in landscape. You are looking at 332 * the screen. If the top side of the camera sensor is aligned with the 333 * right edge of the screen in natural orientation, the value should be 334 * 90. If the top side of a front-facing camera sensor is aligned with 335 * the right of the screen, the value should be 270.</p> 336 * 337 * @see #setDisplayOrientation(int) 338 * @see Parameters#setRotation(int) 339 * @see Parameters#setPreviewSize(int, int) 340 * @see Parameters#setPictureSize(int, int) 341 * @see Parameters#setJpegThumbnailSize(int, int) 342 */ 343 public int orientation; 344 345 /** 346 * <p>Whether the shutter sound can be disabled.</p> 347 * 348 * <p>On some devices, the camera shutter sound cannot be turned off 349 * through {@link #enableShutterSound enableShutterSound}. This field 350 * can be used to determine whether a call to disable the shutter sound 351 * will succeed.</p> 352 * 353 * <p>If this field is set to true, then a call of 354 * {@code enableShutterSound(false)} will be successful. If set to 355 * false, then that call will fail, and the shutter sound will be played 356 * when {@link Camera#takePicture takePicture} is called.</p> 357 */ 358 public boolean canDisableShutterSound; 359 }; 360 361 /** 362 * Creates a new Camera object to access a particular hardware camera. If 363 * the same camera is opened by other applications, this will throw a 364 * RuntimeException. 365 * 366 * <p>You must call {@link #release()} when you are done using the camera, 367 * otherwise it will remain locked and be unavailable to other applications. 368 * 369 * <p>Your application should only have one Camera object active at a time 370 * for a particular hardware camera. 371 * 372 * <p>Callbacks from other methods are delivered to the event loop of the 373 * thread which called open(). If this thread has no event loop, then 374 * callbacks are delivered to the main application event loop. If there 375 * is no main application event loop, callbacks are not delivered. 376 * 377 * <p class="caution"><b>Caution:</b> On some devices, this method may 378 * take a long time to complete. It is best to call this method from a 379 * worker thread (possibly using {@link android.os.AsyncTask}) to avoid 380 * blocking the main application UI thread. 381 * 382 * @param cameraId the hardware camera to access, between 0 and 383 * {@link #getNumberOfCameras()}-1. 384 * @return a new Camera object, connected, locked and ready for use. 385 * @throws RuntimeException if opening the camera fails (for example, if the 386 * camera is in use by another process or device policy manager has 387 * disabled the camera). 388 * @see android.app.admin.DevicePolicyManager#getCameraDisabled(android.content.ComponentName) 389 */ 390 public static Camera open(int cameraId) { 391 return new Camera(cameraId); 392 } 393 394 /** 395 * Creates a new Camera object to access the first back-facing camera on the 396 * device. If the device does not have a back-facing camera, this returns 397 * null. Otherwise acts like the {@link #open(int)} call. 398 * 399 * @return a new Camera object for the first back-facing camera, or null if there is no 400 * backfacing camera 401 * @see #open(int) 402 */ 403 public static Camera open() { 404 int numberOfCameras = getNumberOfCameras(); 405 CameraInfo cameraInfo = new CameraInfo(); 406 for (int i = 0; i < numberOfCameras; i++) { 407 getCameraInfo(i, cameraInfo); 408 if (cameraInfo.facing == CameraInfo.CAMERA_FACING_BACK) { 409 return new Camera(i); 410 } 411 } 412 return null; 413 } 414 415 /** 416 * Creates a new Camera object to access a particular hardware camera with 417 * given hal API version. If the same camera is opened by other applications 418 * or the hal API version is not supported by this device, this will throw a 419 * RuntimeException. 420 * <p> 421 * You must call {@link #release()} when you are done using the camera, 422 * otherwise it will remain locked and be unavailable to other applications. 423 * <p> 424 * Your application should only have one Camera object active at a time for 425 * a particular hardware camera. 426 * <p> 427 * Callbacks from other methods are delivered to the event loop of the 428 * thread which called open(). If this thread has no event loop, then 429 * callbacks are delivered to the main application event loop. If there is 430 * no main application event loop, callbacks are not delivered. 431 * <p class="caution"> 432 * <b>Caution:</b> On some devices, this method may take a long time to 433 * complete. It is best to call this method from a worker thread (possibly 434 * using {@link android.os.AsyncTask}) to avoid blocking the main 435 * application UI thread. 436 * 437 * @param cameraId The hardware camera to access, between 0 and 438 * {@link #getNumberOfCameras()}-1. 439 * @param halVersion The HAL API version this camera device to be opened as. 440 * @return a new Camera object, connected, locked and ready for use. 441 * 442 * @throws IllegalArgumentException if the {@code halVersion} is invalid 443 * 444 * @throws RuntimeException if opening the camera fails (for example, if the 445 * camera is in use by another process or device policy manager has disabled 446 * the camera). 447 * 448 * @see android.app.admin.DevicePolicyManager#getCameraDisabled(android.content.ComponentName) 449 * @see #CAMERA_HAL_API_VERSION_1_0 450 * 451 * @hide 452 */ 453 public static Camera openLegacy(int cameraId, int halVersion) { 454 if (halVersion < CAMERA_HAL_API_VERSION_1_0) { 455 throw new IllegalArgumentException("Invalid HAL version " + halVersion); 456 } 457 458 return new Camera(cameraId, halVersion); 459 } 460 461 /** 462 * Create a legacy camera object. 463 * 464 * @param cameraId The hardware camera to access, between 0 and 465 * {@link #getNumberOfCameras()}-1. 466 * @param halVersion The HAL API version this camera device to be opened as. 467 */ 468 private Camera(int cameraId, int halVersion) { 469 int err = cameraInitVersion(cameraId, halVersion); 470 if (checkInitErrors(err)) { 471 if (err == -EACCES) { 472 throw new RuntimeException("Fail to connect to camera service"); 473 } else if (err == -ENODEV) { 474 throw new RuntimeException("Camera initialization failed"); 475 } else if (err == -ENOSYS) { 476 throw new RuntimeException("Camera initialization failed because some methods" 477 + " are not implemented"); 478 } else if (err == -EOPNOTSUPP) { 479 throw new RuntimeException("Camera initialization failed because the hal" 480 + " version is not supported by this device"); 481 } else if (err == -EINVAL) { 482 throw new RuntimeException("Camera initialization failed because the input" 483 + " arugments are invalid"); 484 } else if (err == -EBUSY) { 485 throw new RuntimeException("Camera initialization failed because the camera" 486 + " device was already opened"); 487 } else if (err == -EUSERS) { 488 throw new RuntimeException("Camera initialization failed because the max" 489 + " number of camera devices were already opened"); 490 } 491 // Should never hit this. 492 throw new RuntimeException("Unknown camera error"); 493 } 494 } 495 496 private int cameraInitVersion(int cameraId, int halVersion) { 497 mShutterCallback = null; 498 mRawImageCallback = null; 499 mJpegCallback = null; 500 mPreviewCallback = null; 501 mPostviewCallback = null; 502 mUsingPreviewAllocation = false; 503 mZoomListener = null; 504 505 Looper looper; 506 if ((looper = Looper.myLooper()) != null) { 507 mEventHandler = new EventHandler(this, looper); 508 } else if ((looper = Looper.getMainLooper()) != null) { 509 mEventHandler = new EventHandler(this, looper); 510 } else { 511 mEventHandler = null; 512 } 513 514 return native_setup(new WeakReference<Camera>(this), cameraId, halVersion, 515 ActivityThread.currentOpPackageName()); 516 } 517 518 private int cameraInitNormal(int cameraId) { 519 return cameraInitVersion(cameraId, CAMERA_HAL_API_VERSION_NORMAL_CONNECT); 520 } 521 522 /** 523 * Connect to the camera service using #connectLegacy 524 * 525 * <p> 526 * This acts the same as normal except that it will return 527 * the detailed error code if open fails instead of 528 * converting everything into {@code NO_INIT}.</p> 529 * 530 * <p>Intended to use by the camera2 shim only, do <i>not</i> use this for other code.</p> 531 * 532 * @return a detailed errno error code, or {@code NO_ERROR} on success 533 * 534 * @hide 535 */ 536 public int cameraInitUnspecified(int cameraId) { 537 return cameraInitVersion(cameraId, CAMERA_HAL_API_VERSION_UNSPECIFIED); 538 } 539 540 /** used by Camera#open, Camera#open(int) */ 541 Camera(int cameraId) { 542 int err = cameraInitNormal(cameraId); 543 if (checkInitErrors(err)) { 544 if (err == -EACCES) { 545 throw new RuntimeException("Fail to connect to camera service"); 546 } else if (err == -ENODEV) { 547 throw new RuntimeException("Camera initialization failed"); 548 } 549 // Should never hit this. 550 throw new RuntimeException("Unknown camera error"); 551 } 552 initAppOps(); 553 } 554 555 556 /** 557 * @hide 558 */ 559 public static boolean checkInitErrors(int err) { 560 return err != NO_ERROR; 561 } 562 563 /** 564 * @hide 565 */ 566 public static Camera openUninitialized() { 567 return new Camera(); 568 } 569 570 /** 571 * An empty Camera for testing purpose. 572 */ 573 Camera() { 574 initAppOps(); 575 } 576 577 private void initAppOps() { 578 IBinder b = ServiceManager.getService(Context.APP_OPS_SERVICE); 579 mAppOps = IAppOpsService.Stub.asInterface(b); 580 // initialize mHasAppOpsPlayAudio 581 updateAppOpsPlayAudio(); 582 // register a callback to monitor whether the OP_PLAY_AUDIO is still allowed 583 mAppOpsCallback = new IAppOpsCallbackWrapper(this); 584 try { 585 mAppOps.startWatchingMode(AppOpsManager.OP_PLAY_AUDIO, 586 ActivityThread.currentPackageName(), mAppOpsCallback); 587 } catch (RemoteException e) { 588 Log.e(TAG, "Error registering appOps callback", e); 589 mHasAppOpsPlayAudio = false; 590 } 591 } 592 593 private void releaseAppOps() { 594 try { 595 if (mAppOps != null) { 596 mAppOps.stopWatchingMode(mAppOpsCallback); 597 } 598 } catch (Exception e) { 599 // nothing to do here, the object is supposed to be released anyway 600 } 601 } 602 603 @Override 604 protected void finalize() { 605 release(); 606 } 607 608 private native final int native_setup(Object camera_this, int cameraId, int halVersion, 609 String packageName); 610 611 private native final void native_release(); 612 613 614 /** 615 * Disconnects and releases the Camera object resources. 616 * 617 * <p>You must call this as soon as you're done with the Camera object.</p> 618 */ 619 public final void release() { 620 native_release(); 621 mFaceDetectionRunning = false; 622 releaseAppOps(); 623 } 624 625 /** 626 * Unlocks the camera to allow another process to access it. 627 * Normally, the camera is locked to the process with an active Camera 628 * object until {@link #release()} is called. To allow rapid handoff 629 * between processes, you can call this method to release the camera 630 * temporarily for another process to use; once the other process is done 631 * you can call {@link #reconnect()} to reclaim the camera. 632 * 633 * <p>This must be done before calling 634 * {@link android.media.MediaRecorder#setCamera(Camera)}. This cannot be 635 * called after recording starts. 636 * 637 * <p>If you are not recording video, you probably do not need this method. 638 * 639 * @throws RuntimeException if the camera cannot be unlocked. 640 */ 641 public native final void unlock(); 642 643 /** 644 * Re-locks the camera to prevent other processes from accessing it. 645 * Camera objects are locked by default unless {@link #unlock()} is 646 * called. Normally {@link #reconnect()} is used instead. 647 * 648 * <p>Since API level 14, camera is automatically locked for applications in 649 * {@link android.media.MediaRecorder#start()}. Applications can use the 650 * camera (ex: zoom) after recording starts. There is no need to call this 651 * after recording starts or stops. 652 * 653 * <p>If you are not recording video, you probably do not need this method. 654 * 655 * @throws RuntimeException if the camera cannot be re-locked (for 656 * example, if the camera is still in use by another process). 657 */ 658 public native final void lock(); 659 660 /** 661 * Reconnects to the camera service after another process used it. 662 * After {@link #unlock()} is called, another process may use the 663 * camera; when the process is done, you must reconnect to the camera, 664 * which will re-acquire the lock and allow you to continue using the 665 * camera. 666 * 667 * <p>Since API level 14, camera is automatically locked for applications in 668 * {@link android.media.MediaRecorder#start()}. Applications can use the 669 * camera (ex: zoom) after recording starts. There is no need to call this 670 * after recording starts or stops. 671 * 672 * <p>If you are not recording video, you probably do not need this method. 673 * 674 * @throws IOException if a connection cannot be re-established (for 675 * example, if the camera is still in use by another process). 676 * @throws RuntimeException if release() has been called on this Camera 677 * instance. 678 */ 679 public native final void reconnect() throws IOException; 680 681 /** 682 * Sets the {@link Surface} to be used for live preview. 683 * Either a surface or surface texture is necessary for preview, and 684 * preview is necessary to take pictures. The same surface can be re-set 685 * without harm. Setting a preview surface will un-set any preview surface 686 * texture that was set via {@link #setPreviewTexture}. 687 * 688 * <p>The {@link SurfaceHolder} must already contain a surface when this 689 * method is called. If you are using {@link android.view.SurfaceView}, 690 * you will need to register a {@link SurfaceHolder.Callback} with 691 * {@link SurfaceHolder#addCallback(SurfaceHolder.Callback)} and wait for 692 * {@link SurfaceHolder.Callback#surfaceCreated(SurfaceHolder)} before 693 * calling setPreviewDisplay() or starting preview. 694 * 695 * <p>This method must be called before {@link #startPreview()}. The 696 * one exception is that if the preview surface is not set (or set to null) 697 * before startPreview() is called, then this method may be called once 698 * with a non-null parameter to set the preview surface. (This allows 699 * camera setup and surface creation to happen in parallel, saving time.) 700 * The preview surface may not otherwise change while preview is running. 701 * 702 * @param holder containing the Surface on which to place the preview, 703 * or null to remove the preview surface 704 * @throws IOException if the method fails (for example, if the surface 705 * is unavailable or unsuitable). 706 * @throws RuntimeException if release() has been called on this Camera 707 * instance. 708 */ 709 public final void setPreviewDisplay(SurfaceHolder holder) throws IOException { 710 if (holder != null) { 711 setPreviewSurface(holder.getSurface()); 712 } else { 713 setPreviewSurface((Surface)null); 714 } 715 } 716 717 /** 718 * @hide 719 */ 720 public native final void setPreviewSurface(Surface surface) throws IOException; 721 722 /** 723 * Sets the {@link SurfaceTexture} to be used for live preview. 724 * Either a surface or surface texture is necessary for preview, and 725 * preview is necessary to take pictures. The same surface texture can be 726 * re-set without harm. Setting a preview surface texture will un-set any 727 * preview surface that was set via {@link #setPreviewDisplay}. 728 * 729 * <p>This method must be called before {@link #startPreview()}. The 730 * one exception is that if the preview surface texture is not set (or set 731 * to null) before startPreview() is called, then this method may be called 732 * once with a non-null parameter to set the preview surface. (This allows 733 * camera setup and surface creation to happen in parallel, saving time.) 734 * The preview surface texture may not otherwise change while preview is 735 * running. 736 * 737 * <p>The timestamps provided by {@link SurfaceTexture#getTimestamp()} for a 738 * SurfaceTexture set as the preview texture have an unspecified zero point, 739 * and cannot be directly compared between different cameras or different 740 * instances of the same camera, or across multiple runs of the same 741 * program. 742 * 743 * <p>If you are using the preview data to create video or still images, 744 * strongly consider using {@link android.media.MediaActionSound} to 745 * properly indicate image capture or recording start/stop to the user.</p> 746 * 747 * @see android.media.MediaActionSound 748 * @see android.graphics.SurfaceTexture 749 * @see android.view.TextureView 750 * @param surfaceTexture the {@link SurfaceTexture} to which the preview 751 * images are to be sent or null to remove the current preview surface 752 * texture 753 * @throws IOException if the method fails (for example, if the surface 754 * texture is unavailable or unsuitable). 755 * @throws RuntimeException if release() has been called on this Camera 756 * instance. 757 */ 758 public native final void setPreviewTexture(SurfaceTexture surfaceTexture) throws IOException; 759 760 /** 761 * Callback interface used to deliver copies of preview frames as 762 * they are displayed. 763 * 764 * @see #setPreviewCallback(Camera.PreviewCallback) 765 * @see #setOneShotPreviewCallback(Camera.PreviewCallback) 766 * @see #setPreviewCallbackWithBuffer(Camera.PreviewCallback) 767 * @see #startPreview() 768 * 769 * @deprecated We recommend using the new {@link android.hardware.camera2} API for new 770 * applications. 771 */ 772 @Deprecated 773 public interface PreviewCallback 774 { 775 /** 776 * Called as preview frames are displayed. This callback is invoked 777 * on the event thread {@link #open(int)} was called from. 778 * 779 * <p>If using the {@link android.graphics.ImageFormat#YV12} format, 780 * refer to the equations in {@link Camera.Parameters#setPreviewFormat} 781 * for the arrangement of the pixel data in the preview callback 782 * buffers. 783 * 784 * @param data the contents of the preview frame in the format defined 785 * by {@link android.graphics.ImageFormat}, which can be queried 786 * with {@link android.hardware.Camera.Parameters#getPreviewFormat()}. 787 * If {@link android.hardware.Camera.Parameters#setPreviewFormat(int)} 788 * is never called, the default will be the YCbCr_420_SP 789 * (NV21) format. 790 * @param camera the Camera service object. 791 */ 792 void onPreviewFrame(byte[] data, Camera camera); 793 }; 794 795 /** 796 * Starts capturing and drawing preview frames to the screen. 797 * Preview will not actually start until a surface is supplied 798 * with {@link #setPreviewDisplay(SurfaceHolder)} or 799 * {@link #setPreviewTexture(SurfaceTexture)}. 800 * 801 * <p>If {@link #setPreviewCallback(Camera.PreviewCallback)}, 802 * {@link #setOneShotPreviewCallback(Camera.PreviewCallback)}, or 803 * {@link #setPreviewCallbackWithBuffer(Camera.PreviewCallback)} were 804 * called, {@link Camera.PreviewCallback#onPreviewFrame(byte[], Camera)} 805 * will be called when preview data becomes available. 806 * 807 * @throws RuntimeException if starting preview fails; usually this would be 808 * because of a hardware or other low-level error, or because release() 809 * has been called on this Camera instance. 810 */ 811 public native final void startPreview(); 812 813 /** 814 * Stops capturing and drawing preview frames to the surface, and 815 * resets the camera for a future call to {@link #startPreview()}. 816 * 817 * @throws RuntimeException if stopping preview fails; usually this would be 818 * because of a hardware or other low-level error, or because release() 819 * has been called on this Camera instance. 820 */ 821 public final void stopPreview() { 822 _stopPreview(); 823 mFaceDetectionRunning = false; 824 825 mShutterCallback = null; 826 mRawImageCallback = null; 827 mPostviewCallback = null; 828 mJpegCallback = null; 829 synchronized (mAutoFocusCallbackLock) { 830 mAutoFocusCallback = null; 831 } 832 mAutoFocusMoveCallback = null; 833 } 834 835 private native final void _stopPreview(); 836 837 /** 838 * Return current preview state. 839 * 840 * FIXME: Unhide before release 841 * @hide 842 */ 843 public native final boolean previewEnabled(); 844 845 /** 846 * <p>Installs a callback to be invoked for every preview frame in addition 847 * to displaying them on the screen. The callback will be repeatedly called 848 * for as long as preview is active. This method can be called at any time, 849 * even while preview is live. Any other preview callbacks are 850 * overridden.</p> 851 * 852 * <p>If you are using the preview data to create video or still images, 853 * strongly consider using {@link android.media.MediaActionSound} to 854 * properly indicate image capture or recording start/stop to the user.</p> 855 * 856 * @param cb a callback object that receives a copy of each preview frame, 857 * or null to stop receiving callbacks. 858 * @throws RuntimeException if release() has been called on this Camera 859 * instance. 860 * @see android.media.MediaActionSound 861 */ 862 public final void setPreviewCallback(PreviewCallback cb) { 863 mPreviewCallback = cb; 864 mOneShot = false; 865 mWithBuffer = false; 866 if (cb != null) { 867 mUsingPreviewAllocation = false; 868 } 869 // Always use one-shot mode. We fake camera preview mode by 870 // doing one-shot preview continuously. 871 setHasPreviewCallback(cb != null, false); 872 } 873 874 /** 875 * <p>Installs a callback to be invoked for the next preview frame in 876 * addition to displaying it on the screen. After one invocation, the 877 * callback is cleared. This method can be called any time, even when 878 * preview is live. Any other preview callbacks are overridden.</p> 879 * 880 * <p>If you are using the preview data to create video or still images, 881 * strongly consider using {@link android.media.MediaActionSound} to 882 * properly indicate image capture or recording start/stop to the user.</p> 883 * 884 * @param cb a callback object that receives a copy of the next preview frame, 885 * or null to stop receiving callbacks. 886 * @throws RuntimeException if release() has been called on this Camera 887 * instance. 888 * @see android.media.MediaActionSound 889 */ 890 public final void setOneShotPreviewCallback(PreviewCallback cb) { 891 mPreviewCallback = cb; 892 mOneShot = true; 893 mWithBuffer = false; 894 if (cb != null) { 895 mUsingPreviewAllocation = false; 896 } 897 setHasPreviewCallback(cb != null, false); 898 } 899 900 private native final void setHasPreviewCallback(boolean installed, boolean manualBuffer); 901 902 /** 903 * <p>Installs a callback to be invoked for every preview frame, using 904 * buffers supplied with {@link #addCallbackBuffer(byte[])}, in addition to 905 * displaying them on the screen. The callback will be repeatedly called 906 * for as long as preview is active and buffers are available. Any other 907 * preview callbacks are overridden.</p> 908 * 909 * <p>The purpose of this method is to improve preview efficiency and frame 910 * rate by allowing preview frame memory reuse. You must call 911 * {@link #addCallbackBuffer(byte[])} at some point -- before or after 912 * calling this method -- or no callbacks will received.</p> 913 * 914 * <p>The buffer queue will be cleared if this method is called with a null 915 * callback, {@link #setPreviewCallback(Camera.PreviewCallback)} is called, 916 * or {@link #setOneShotPreviewCallback(Camera.PreviewCallback)} is 917 * called.</p> 918 * 919 * <p>If you are using the preview data to create video or still images, 920 * strongly consider using {@link android.media.MediaActionSound} to 921 * properly indicate image capture or recording start/stop to the user.</p> 922 * 923 * @param cb a callback object that receives a copy of the preview frame, 924 * or null to stop receiving callbacks and clear the buffer queue. 925 * @throws RuntimeException if release() has been called on this Camera 926 * instance. 927 * @see #addCallbackBuffer(byte[]) 928 * @see android.media.MediaActionSound 929 */ 930 public final void setPreviewCallbackWithBuffer(PreviewCallback cb) { 931 mPreviewCallback = cb; 932 mOneShot = false; 933 mWithBuffer = true; 934 if (cb != null) { 935 mUsingPreviewAllocation = false; 936 } 937 setHasPreviewCallback(cb != null, true); 938 } 939 940 /** 941 * Adds a pre-allocated buffer to the preview callback buffer queue. 942 * Applications can add one or more buffers to the queue. When a preview 943 * frame arrives and there is still at least one available buffer, the 944 * buffer will be used and removed from the queue. Then preview callback is 945 * invoked with the buffer. If a frame arrives and there is no buffer left, 946 * the frame is discarded. Applications should add buffers back when they 947 * finish processing the data in them. 948 * 949 * <p>For formats besides YV12, the size of the buffer is determined by 950 * multiplying the preview image width, height, and bytes per pixel. The 951 * width and height can be read from 952 * {@link Camera.Parameters#getPreviewSize()}. Bytes per pixel can be 953 * computed from {@link android.graphics.ImageFormat#getBitsPerPixel(int)} / 954 * 8, using the image format from 955 * {@link Camera.Parameters#getPreviewFormat()}. 956 * 957 * <p>If using the {@link android.graphics.ImageFormat#YV12} format, the 958 * size can be calculated using the equations listed in 959 * {@link Camera.Parameters#setPreviewFormat}. 960 * 961 * <p>This method is only necessary when 962 * {@link #setPreviewCallbackWithBuffer(PreviewCallback)} is used. When 963 * {@link #setPreviewCallback(PreviewCallback)} or 964 * {@link #setOneShotPreviewCallback(PreviewCallback)} are used, buffers 965 * are automatically allocated. When a supplied buffer is too small to 966 * hold the preview frame data, preview callback will return null and 967 * the buffer will be removed from the buffer queue. 968 * 969 * @param callbackBuffer the buffer to add to the queue. The size of the 970 * buffer must match the values described above. 971 * @see #setPreviewCallbackWithBuffer(PreviewCallback) 972 */ 973 public final void addCallbackBuffer(byte[] callbackBuffer) 974 { 975 _addCallbackBuffer(callbackBuffer, CAMERA_MSG_PREVIEW_FRAME); 976 } 977 978 /** 979 * Adds a pre-allocated buffer to the raw image callback buffer queue. 980 * Applications can add one or more buffers to the queue. When a raw image 981 * frame arrives and there is still at least one available buffer, the 982 * buffer will be used to hold the raw image data and removed from the 983 * queue. Then raw image callback is invoked with the buffer. If a raw 984 * image frame arrives but there is no buffer left, the frame is 985 * discarded. Applications should add buffers back when they finish 986 * processing the data in them by calling this method again in order 987 * to avoid running out of raw image callback buffers. 988 * 989 * <p>The size of the buffer is determined by multiplying the raw image 990 * width, height, and bytes per pixel. The width and height can be 991 * read from {@link Camera.Parameters#getPictureSize()}. Bytes per pixel 992 * can be computed from 993 * {@link android.graphics.ImageFormat#getBitsPerPixel(int)} / 8, 994 * using the image format from {@link Camera.Parameters#getPreviewFormat()}. 995 * 996 * <p>This method is only necessary when the PictureCallbck for raw image 997 * is used while calling {@link #takePicture(Camera.ShutterCallback, 998 * Camera.PictureCallback, Camera.PictureCallback, Camera.PictureCallback)}. 999 * 1000 * <p>Please note that by calling this method, the mode for 1001 * application-managed callback buffers is triggered. If this method has 1002 * never been called, null will be returned by the raw image callback since 1003 * there is no image callback buffer available. Furthermore, When a supplied 1004 * buffer is too small to hold the raw image data, raw image callback will 1005 * return null and the buffer will be removed from the buffer queue. 1006 * 1007 * @param callbackBuffer the buffer to add to the raw image callback buffer 1008 * queue. The size should be width * height * (bits per pixel) / 8. An 1009 * null callbackBuffer will be ignored and won't be added to the queue. 1010 * 1011 * @see #takePicture(Camera.ShutterCallback, 1012 * Camera.PictureCallback, Camera.PictureCallback, Camera.PictureCallback)}. 1013 * 1014 * {@hide} 1015 */ 1016 public final void addRawImageCallbackBuffer(byte[] callbackBuffer) 1017 { 1018 addCallbackBuffer(callbackBuffer, CAMERA_MSG_RAW_IMAGE); 1019 } 1020 1021 private final void addCallbackBuffer(byte[] callbackBuffer, int msgType) 1022 { 1023 // CAMERA_MSG_VIDEO_FRAME may be allowed in the future. 1024 if (msgType != CAMERA_MSG_PREVIEW_FRAME && 1025 msgType != CAMERA_MSG_RAW_IMAGE) { 1026 throw new IllegalArgumentException( 1027 "Unsupported message type: " + msgType); 1028 } 1029 1030 _addCallbackBuffer(callbackBuffer, msgType); 1031 } 1032 1033 private native final void _addCallbackBuffer( 1034 byte[] callbackBuffer, int msgType); 1035 1036 /** 1037 * <p>Create a {@link android.renderscript RenderScript} 1038 * {@link android.renderscript.Allocation Allocation} to use as a 1039 * destination of preview callback frames. Use 1040 * {@link #setPreviewCallbackAllocation setPreviewCallbackAllocation} to use 1041 * the created Allocation as a destination for camera preview frames.</p> 1042 * 1043 * <p>The Allocation will be created with a YUV type, and its contents must 1044 * be accessed within Renderscript with the {@code rsGetElementAtYuv_*} 1045 * accessor methods. Its size will be based on the current 1046 * {@link Parameters#getPreviewSize preview size} configured for this 1047 * camera.</p> 1048 * 1049 * @param rs the RenderScript context for this Allocation. 1050 * @param usage additional usage flags to set for the Allocation. The usage 1051 * flag {@link android.renderscript.Allocation#USAGE_IO_INPUT} will always 1052 * be set on the created Allocation, but additional flags may be provided 1053 * here. 1054 * @return a new YUV-type Allocation with dimensions equal to the current 1055 * preview size. 1056 * @throws RSIllegalArgumentException if the usage flags are not compatible 1057 * with an YUV Allocation. 1058 * @see #setPreviewCallbackAllocation 1059 * @hide 1060 */ 1061 public final Allocation createPreviewAllocation(RenderScript rs, int usage) 1062 throws RSIllegalArgumentException { 1063 Parameters p = getParameters(); 1064 Size previewSize = p.getPreviewSize(); 1065 Type.Builder yuvBuilder = new Type.Builder(rs, 1066 Element.createPixel(rs, 1067 Element.DataType.UNSIGNED_8, 1068 Element.DataKind.PIXEL_YUV)); 1069 // Use YV12 for wide compatibility. Changing this requires also 1070 // adjusting camera service's format selection. 1071 yuvBuilder.setYuvFormat(ImageFormat.YV12); 1072 yuvBuilder.setX(previewSize.width); 1073 yuvBuilder.setY(previewSize.height); 1074 1075 Allocation a = Allocation.createTyped(rs, yuvBuilder.create(), 1076 usage | Allocation.USAGE_IO_INPUT); 1077 1078 return a; 1079 } 1080 1081 /** 1082 * <p>Set an {@link android.renderscript.Allocation Allocation} as the 1083 * target of preview callback data. Use this method for efficient processing 1084 * of camera preview data with RenderScript. The Allocation must be created 1085 * with the {@link #createPreviewAllocation createPreviewAllocation } 1086 * method.</p> 1087 * 1088 * <p>Setting a preview allocation will disable any active preview callbacks 1089 * set by {@link #setPreviewCallback setPreviewCallback} or 1090 * {@link #setPreviewCallbackWithBuffer setPreviewCallbackWithBuffer}, and 1091 * vice versa. Using a preview allocation still requires an active standard 1092 * preview target to be set, either with 1093 * {@link #setPreviewTexture setPreviewTexture} or 1094 * {@link #setPreviewDisplay setPreviewDisplay}.</p> 1095 * 1096 * <p>To be notified when new frames are available to the Allocation, use 1097 * {@link android.renderscript.Allocation#setIoInputNotificationHandler Allocation.setIoInputNotificationHandler}. To 1098 * update the frame currently accessible from the Allocation to the latest 1099 * preview frame, call 1100 * {@link android.renderscript.Allocation#ioReceive Allocation.ioReceive}.</p> 1101 * 1102 * <p>To disable preview into the Allocation, call this method with a 1103 * {@code null} parameter.</p> 1104 * 1105 * <p>Once a preview allocation is set, the preview size set by 1106 * {@link Parameters#setPreviewSize setPreviewSize} cannot be changed. If 1107 * you wish to change the preview size, first remove the preview allocation 1108 * by calling {@code setPreviewCallbackAllocation(null)}, then change the 1109 * preview size, create a new preview Allocation with 1110 * {@link #createPreviewAllocation createPreviewAllocation}, and set it as 1111 * the new preview callback allocation target.</p> 1112 * 1113 * <p>If you are using the preview data to create video or still images, 1114 * strongly consider using {@link android.media.MediaActionSound} to 1115 * properly indicate image capture or recording start/stop to the user.</p> 1116 * 1117 * @param previewAllocation the allocation to use as destination for preview 1118 * @throws IOException if configuring the camera to use the Allocation for 1119 * preview fails. 1120 * @throws IllegalArgumentException if the Allocation's dimensions or other 1121 * parameters don't meet the requirements. 1122 * @see #createPreviewAllocation 1123 * @see #setPreviewCallback 1124 * @see #setPreviewCallbackWithBuffer 1125 * @hide 1126 */ 1127 public final void setPreviewCallbackAllocation(Allocation previewAllocation) 1128 throws IOException { 1129 Surface previewSurface = null; 1130 if (previewAllocation != null) { 1131 Parameters p = getParameters(); 1132 Size previewSize = p.getPreviewSize(); 1133 if (previewSize.width != previewAllocation.getType().getX() || 1134 previewSize.height != previewAllocation.getType().getY()) { 1135 throw new IllegalArgumentException( 1136 "Allocation dimensions don't match preview dimensions: " + 1137 "Allocation is " + 1138 previewAllocation.getType().getX() + 1139 ", " + 1140 previewAllocation.getType().getY() + 1141 ". Preview is " + previewSize.width + ", " + 1142 previewSize.height); 1143 } 1144 if ((previewAllocation.getUsage() & 1145 Allocation.USAGE_IO_INPUT) == 0) { 1146 throw new IllegalArgumentException( 1147 "Allocation usage does not include USAGE_IO_INPUT"); 1148 } 1149 if (previewAllocation.getType().getElement().getDataKind() != 1150 Element.DataKind.PIXEL_YUV) { 1151 throw new IllegalArgumentException( 1152 "Allocation is not of a YUV type"); 1153 } 1154 previewSurface = previewAllocation.getSurface(); 1155 mUsingPreviewAllocation = true; 1156 } else { 1157 mUsingPreviewAllocation = false; 1158 } 1159 setPreviewCallbackSurface(previewSurface); 1160 } 1161 1162 private native final void setPreviewCallbackSurface(Surface s); 1163 1164 private class EventHandler extends Handler 1165 { 1166 private final Camera mCamera; 1167 1168 public EventHandler(Camera c, Looper looper) { 1169 super(looper); 1170 mCamera = c; 1171 } 1172 1173 @Override 1174 public void handleMessage(Message msg) { 1175 switch(msg.what) { 1176 case CAMERA_MSG_SHUTTER: 1177 if (mShutterCallback != null) { 1178 mShutterCallback.onShutter(); 1179 } 1180 return; 1181 1182 case CAMERA_MSG_RAW_IMAGE: 1183 if (mRawImageCallback != null) { 1184 mRawImageCallback.onPictureTaken((byte[])msg.obj, mCamera); 1185 } 1186 return; 1187 1188 case CAMERA_MSG_COMPRESSED_IMAGE: 1189 if (mJpegCallback != null) { 1190 mJpegCallback.onPictureTaken((byte[])msg.obj, mCamera); 1191 } 1192 return; 1193 1194 case CAMERA_MSG_PREVIEW_FRAME: 1195 PreviewCallback pCb = mPreviewCallback; 1196 if (pCb != null) { 1197 if (mOneShot) { 1198 // Clear the callback variable before the callback 1199 // in case the app calls setPreviewCallback from 1200 // the callback function 1201 mPreviewCallback = null; 1202 } else if (!mWithBuffer) { 1203 // We're faking the camera preview mode to prevent 1204 // the app from being flooded with preview frames. 1205 // Set to oneshot mode again. 1206 setHasPreviewCallback(true, false); 1207 } 1208 pCb.onPreviewFrame((byte[])msg.obj, mCamera); 1209 } 1210 return; 1211 1212 case CAMERA_MSG_POSTVIEW_FRAME: 1213 if (mPostviewCallback != null) { 1214 mPostviewCallback.onPictureTaken((byte[])msg.obj, mCamera); 1215 } 1216 return; 1217 1218 case CAMERA_MSG_FOCUS: 1219 AutoFocusCallback cb = null; 1220 synchronized (mAutoFocusCallbackLock) { 1221 cb = mAutoFocusCallback; 1222 } 1223 if (cb != null) { 1224 boolean success = msg.arg1 == 0 ? false : true; 1225 cb.onAutoFocus(success, mCamera); 1226 } 1227 return; 1228 1229 case CAMERA_MSG_ZOOM: 1230 if (mZoomListener != null) { 1231 mZoomListener.onZoomChange(msg.arg1, msg.arg2 != 0, mCamera); 1232 } 1233 return; 1234 1235 case CAMERA_MSG_PREVIEW_METADATA: 1236 if (mFaceListener != null) { 1237 mFaceListener.onFaceDetection((Face[])msg.obj, mCamera); 1238 } 1239 return; 1240 1241 case CAMERA_MSG_ERROR : 1242 Log.e(TAG, "Error " + msg.arg1); 1243 if (mErrorCallback != null) { 1244 mErrorCallback.onError(msg.arg1, mCamera); 1245 } 1246 return; 1247 1248 case CAMERA_MSG_FOCUS_MOVE: 1249 if (mAutoFocusMoveCallback != null) { 1250 mAutoFocusMoveCallback.onAutoFocusMoving(msg.arg1 == 0 ? false : true, mCamera); 1251 } 1252 return; 1253 1254 default: 1255 Log.e(TAG, "Unknown message type " + msg.what); 1256 return; 1257 } 1258 } 1259 } 1260 1261 private static void postEventFromNative(Object camera_ref, 1262 int what, int arg1, int arg2, Object obj) 1263 { 1264 Camera c = (Camera)((WeakReference)camera_ref).get(); 1265 if (c == null) 1266 return; 1267 1268 if (c.mEventHandler != null) { 1269 Message m = c.mEventHandler.obtainMessage(what, arg1, arg2, obj); 1270 c.mEventHandler.sendMessage(m); 1271 } 1272 } 1273 1274 /** 1275 * Callback interface used to notify on completion of camera auto focus. 1276 * 1277 * <p>Devices that do not support auto-focus will receive a "fake" 1278 * callback to this interface. If your application needs auto-focus and 1279 * should not be installed on devices <em>without</em> auto-focus, you must 1280 * declare that your app uses the 1281 * {@code android.hardware.camera.autofocus} feature, in the 1282 * <a href="{@docRoot}guide/topics/manifest/uses-feature-element.html"><uses-feature></a> 1283 * manifest element.</p> 1284 * 1285 * @see #autoFocus(AutoFocusCallback) 1286 * @deprecated We recommend using the new {@link android.hardware.camera2} API for new 1287 * applications. 1288 */ 1289 @Deprecated 1290 public interface AutoFocusCallback 1291 { 1292 /** 1293 * Called when the camera auto focus completes. If the camera 1294 * does not support auto-focus and autoFocus is called, 1295 * onAutoFocus will be called immediately with a fake value of 1296 * <code>success</code> set to <code>true</code>. 1297 * 1298 * The auto-focus routine does not lock auto-exposure and auto-white 1299 * balance after it completes. 1300 * 1301 * @param success true if focus was successful, false if otherwise 1302 * @param camera the Camera service object 1303 * @see android.hardware.Camera.Parameters#setAutoExposureLock(boolean) 1304 * @see android.hardware.Camera.Parameters#setAutoWhiteBalanceLock(boolean) 1305 */ 1306 void onAutoFocus(boolean success, Camera camera); 1307 } 1308 1309 /** 1310 * Starts camera auto-focus and registers a callback function to run when 1311 * the camera is focused. This method is only valid when preview is active 1312 * (between {@link #startPreview()} and before {@link #stopPreview()}). 1313 * 1314 * <p>Callers should check 1315 * {@link android.hardware.Camera.Parameters#getFocusMode()} to determine if 1316 * this method should be called. If the camera does not support auto-focus, 1317 * it is a no-op and {@link AutoFocusCallback#onAutoFocus(boolean, Camera)} 1318 * callback will be called immediately. 1319 * 1320 * <p>If your application should not be installed 1321 * on devices without auto-focus, you must declare that your application 1322 * uses auto-focus with the 1323 * <a href="{@docRoot}guide/topics/manifest/uses-feature-element.html"><uses-feature></a> 1324 * manifest element.</p> 1325 * 1326 * <p>If the current flash mode is not 1327 * {@link android.hardware.Camera.Parameters#FLASH_MODE_OFF}, flash may be 1328 * fired during auto-focus, depending on the driver and camera hardware.<p> 1329 * 1330 * <p>Auto-exposure lock {@link android.hardware.Camera.Parameters#getAutoExposureLock()} 1331 * and auto-white balance locks {@link android.hardware.Camera.Parameters#getAutoWhiteBalanceLock()} 1332 * do not change during and after autofocus. But auto-focus routine may stop 1333 * auto-exposure and auto-white balance transiently during focusing. 1334 * 1335 * <p>Stopping preview with {@link #stopPreview()}, or triggering still 1336 * image capture with {@link #takePicture(Camera.ShutterCallback, 1337 * Camera.PictureCallback, Camera.PictureCallback)}, will not change the 1338 * the focus position. Applications must call cancelAutoFocus to reset the 1339 * focus.</p> 1340 * 1341 * <p>If autofocus is successful, consider using 1342 * {@link android.media.MediaActionSound} to properly play back an autofocus 1343 * success sound to the user.</p> 1344 * 1345 * @param cb the callback to run 1346 * @throws RuntimeException if starting autofocus fails; usually this would 1347 * be because of a hardware or other low-level error, or because 1348 * release() has been called on this Camera instance. 1349 * @see #cancelAutoFocus() 1350 * @see android.hardware.Camera.Parameters#setAutoExposureLock(boolean) 1351 * @see android.hardware.Camera.Parameters#setAutoWhiteBalanceLock(boolean) 1352 * @see android.media.MediaActionSound 1353 */ 1354 public final void autoFocus(AutoFocusCallback cb) 1355 { 1356 synchronized (mAutoFocusCallbackLock) { 1357 mAutoFocusCallback = cb; 1358 } 1359 native_autoFocus(); 1360 } 1361 private native final void native_autoFocus(); 1362 1363 /** 1364 * Cancels any auto-focus function in progress. 1365 * Whether or not auto-focus is currently in progress, 1366 * this function will return the focus position to the default. 1367 * If the camera does not support auto-focus, this is a no-op. 1368 * 1369 * @throws RuntimeException if canceling autofocus fails; usually this would 1370 * be because of a hardware or other low-level error, or because 1371 * release() has been called on this Camera instance. 1372 * @see #autoFocus(Camera.AutoFocusCallback) 1373 */ 1374 public final void cancelAutoFocus() 1375 { 1376 synchronized (mAutoFocusCallbackLock) { 1377 mAutoFocusCallback = null; 1378 } 1379 native_cancelAutoFocus(); 1380 // CAMERA_MSG_FOCUS should be removed here because the following 1381 // scenario can happen: 1382 // - An application uses the same thread for autoFocus, cancelAutoFocus 1383 // and looper thread. 1384 // - The application calls autoFocus. 1385 // - HAL sends CAMERA_MSG_FOCUS, which enters the looper message queue. 1386 // Before event handler's handleMessage() is invoked, the application 1387 // calls cancelAutoFocus and autoFocus. 1388 // - The application gets the old CAMERA_MSG_FOCUS and thinks autofocus 1389 // has been completed. But in fact it is not. 1390 // 1391 // As documented in the beginning of the file, apps should not use 1392 // multiple threads to call autoFocus and cancelAutoFocus at the same 1393 // time. It is HAL's responsibility not to send a CAMERA_MSG_FOCUS 1394 // message after native_cancelAutoFocus is called. 1395 mEventHandler.removeMessages(CAMERA_MSG_FOCUS); 1396 } 1397 private native final void native_cancelAutoFocus(); 1398 1399 /** 1400 * Callback interface used to notify on auto focus start and stop. 1401 * 1402 * <p>This is only supported in continuous autofocus modes -- {@link 1403 * Parameters#FOCUS_MODE_CONTINUOUS_VIDEO} and {@link 1404 * Parameters#FOCUS_MODE_CONTINUOUS_PICTURE}. Applications can show 1405 * autofocus animation based on this.</p> 1406 * 1407 * @deprecated We recommend using the new {@link android.hardware.camera2} API for new 1408 * applications. 1409 */ 1410 @Deprecated 1411 public interface AutoFocusMoveCallback 1412 { 1413 /** 1414 * Called when the camera auto focus starts or stops. 1415 * 1416 * @param start true if focus starts to move, false if focus stops to move 1417 * @param camera the Camera service object 1418 */ 1419 void onAutoFocusMoving(boolean start, Camera camera); 1420 } 1421 1422 /** 1423 * Sets camera auto-focus move callback. 1424 * 1425 * @param cb the callback to run 1426 * @throws RuntimeException if enabling the focus move callback fails; 1427 * usually this would be because of a hardware or other low-level error, 1428 * or because release() has been called on this Camera instance. 1429 */ 1430 public void setAutoFocusMoveCallback(AutoFocusMoveCallback cb) { 1431 mAutoFocusMoveCallback = cb; 1432 enableFocusMoveCallback((mAutoFocusMoveCallback != null) ? 1 : 0); 1433 } 1434 1435 private native void enableFocusMoveCallback(int enable); 1436 1437 /** 1438 * Callback interface used to signal the moment of actual image capture. 1439 * 1440 * @see #takePicture(ShutterCallback, PictureCallback, PictureCallback, PictureCallback) 1441 * 1442 * @deprecated We recommend using the new {@link android.hardware.camera2} API for new 1443 * applications. 1444 */ 1445 @Deprecated 1446 public interface ShutterCallback 1447 { 1448 /** 1449 * Called as near as possible to the moment when a photo is captured 1450 * from the sensor. This is a good opportunity to play a shutter sound 1451 * or give other feedback of camera operation. This may be some time 1452 * after the photo was triggered, but some time before the actual data 1453 * is available. 1454 */ 1455 void onShutter(); 1456 } 1457 1458 /** 1459 * Callback interface used to supply image data from a photo capture. 1460 * 1461 * @see #takePicture(ShutterCallback, PictureCallback, PictureCallback, PictureCallback) 1462 * 1463 * @deprecated We recommend using the new {@link android.hardware.camera2} API for new 1464 * applications. 1465 */ 1466 @Deprecated 1467 public interface PictureCallback { 1468 /** 1469 * Called when image data is available after a picture is taken. 1470 * The format of the data depends on the context of the callback 1471 * and {@link Camera.Parameters} settings. 1472 * 1473 * @param data a byte array of the picture data 1474 * @param camera the Camera service object 1475 */ 1476 void onPictureTaken(byte[] data, Camera camera); 1477 }; 1478 1479 /** 1480 * Equivalent to <pre>takePicture(Shutter, raw, null, jpeg)</pre>. 1481 * 1482 * @see #takePicture(ShutterCallback, PictureCallback, PictureCallback, PictureCallback) 1483 */ 1484 public final void takePicture(ShutterCallback shutter, PictureCallback raw, 1485 PictureCallback jpeg) { 1486 takePicture(shutter, raw, null, jpeg); 1487 } 1488 private native final void native_takePicture(int msgType); 1489 1490 /** 1491 * Triggers an asynchronous image capture. The camera service will initiate 1492 * a series of callbacks to the application as the image capture progresses. 1493 * The shutter callback occurs after the image is captured. This can be used 1494 * to trigger a sound to let the user know that image has been captured. The 1495 * raw callback occurs when the raw image data is available (NOTE: the data 1496 * will be null if there is no raw image callback buffer available or the 1497 * raw image callback buffer is not large enough to hold the raw image). 1498 * The postview callback occurs when a scaled, fully processed postview 1499 * image is available (NOTE: not all hardware supports this). The jpeg 1500 * callback occurs when the compressed image is available. If the 1501 * application does not need a particular callback, a null can be passed 1502 * instead of a callback method. 1503 * 1504 * <p>This method is only valid when preview is active (after 1505 * {@link #startPreview()}). Preview will be stopped after the image is 1506 * taken; callers must call {@link #startPreview()} again if they want to 1507 * re-start preview or take more pictures. This should not be called between 1508 * {@link android.media.MediaRecorder#start()} and 1509 * {@link android.media.MediaRecorder#stop()}. 1510 * 1511 * <p>After calling this method, you must not call {@link #startPreview()} 1512 * or take another picture until the JPEG callback has returned. 1513 * 1514 * @param shutter the callback for image capture moment, or null 1515 * @param raw the callback for raw (uncompressed) image data, or null 1516 * @param postview callback with postview image data, may be null 1517 * @param jpeg the callback for JPEG image data, or null 1518 * @throws RuntimeException if starting picture capture fails; usually this 1519 * would be because of a hardware or other low-level error, or because 1520 * release() has been called on this Camera instance. 1521 */ 1522 public final void takePicture(ShutterCallback shutter, PictureCallback raw, 1523 PictureCallback postview, PictureCallback jpeg) { 1524 mShutterCallback = shutter; 1525 mRawImageCallback = raw; 1526 mPostviewCallback = postview; 1527 mJpegCallback = jpeg; 1528 1529 // If callback is not set, do not send me callbacks. 1530 int msgType = 0; 1531 if (mShutterCallback != null) { 1532 msgType |= CAMERA_MSG_SHUTTER; 1533 } 1534 if (mRawImageCallback != null) { 1535 msgType |= CAMERA_MSG_RAW_IMAGE; 1536 } 1537 if (mPostviewCallback != null) { 1538 msgType |= CAMERA_MSG_POSTVIEW_FRAME; 1539 } 1540 if (mJpegCallback != null) { 1541 msgType |= CAMERA_MSG_COMPRESSED_IMAGE; 1542 } 1543 1544 native_takePicture(msgType); 1545 mFaceDetectionRunning = false; 1546 } 1547 1548 /** 1549 * Zooms to the requested value smoothly. The driver will notify {@link 1550 * OnZoomChangeListener} of the zoom value and whether zoom is stopped at 1551 * the time. For example, suppose the current zoom is 0 and startSmoothZoom 1552 * is called with value 3. The 1553 * {@link Camera.OnZoomChangeListener#onZoomChange(int, boolean, Camera)} 1554 * method will be called three times with zoom values 1, 2, and 3. 1555 * Applications can call {@link #stopSmoothZoom} to stop the zoom earlier. 1556 * Applications should not call startSmoothZoom again or change the zoom 1557 * value before zoom stops. If the supplied zoom value equals to the current 1558 * zoom value, no zoom callback will be generated. This method is supported 1559 * if {@link android.hardware.Camera.Parameters#isSmoothZoomSupported} 1560 * returns true. 1561 * 1562 * @param value zoom value. The valid range is 0 to {@link 1563 * android.hardware.Camera.Parameters#getMaxZoom}. 1564 * @throws IllegalArgumentException if the zoom value is invalid. 1565 * @throws RuntimeException if the method fails. 1566 * @see #setZoomChangeListener(OnZoomChangeListener) 1567 */ 1568 public native final void startSmoothZoom(int value); 1569 1570 /** 1571 * Stops the smooth zoom. Applications should wait for the {@link 1572 * OnZoomChangeListener} to know when the zoom is actually stopped. This 1573 * method is supported if {@link 1574 * android.hardware.Camera.Parameters#isSmoothZoomSupported} is true. 1575 * 1576 * @throws RuntimeException if the method fails. 1577 */ 1578 public native final void stopSmoothZoom(); 1579 1580 /** 1581 * Set the clockwise rotation of preview display in degrees. This affects 1582 * the preview frames and the picture displayed after snapshot. This method 1583 * is useful for portrait mode applications. Note that preview display of 1584 * front-facing cameras is flipped horizontally before the rotation, that 1585 * is, the image is reflected along the central vertical axis of the camera 1586 * sensor. So the users can see themselves as looking into a mirror. 1587 * 1588 * <p>This does not affect the order of byte array passed in {@link 1589 * PreviewCallback#onPreviewFrame}, JPEG pictures, or recorded videos. This 1590 * method is not allowed to be called during preview. 1591 * 1592 * <p>If you want to make the camera image show in the same orientation as 1593 * the display, you can use the following code. 1594 * <pre> 1595 * public static void setCameraDisplayOrientation(Activity activity, 1596 * int cameraId, android.hardware.Camera camera) { 1597 * android.hardware.Camera.CameraInfo info = 1598 * new android.hardware.Camera.CameraInfo(); 1599 * android.hardware.Camera.getCameraInfo(cameraId, info); 1600 * int rotation = activity.getWindowManager().getDefaultDisplay() 1601 * .getRotation(); 1602 * int degrees = 0; 1603 * switch (rotation) { 1604 * case Surface.ROTATION_0: degrees = 0; break; 1605 * case Surface.ROTATION_90: degrees = 90; break; 1606 * case Surface.ROTATION_180: degrees = 180; break; 1607 * case Surface.ROTATION_270: degrees = 270; break; 1608 * } 1609 * 1610 * int result; 1611 * if (info.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) { 1612 * result = (info.orientation + degrees) % 360; 1613 * result = (360 - result) % 360; // compensate the mirror 1614 * } else { // back-facing 1615 * result = (info.orientation - degrees + 360) % 360; 1616 * } 1617 * camera.setDisplayOrientation(result); 1618 * } 1619 * </pre> 1620 * 1621 * <p>Starting from API level 14, this method can be called when preview is 1622 * active. 1623 * 1624 * <p><b>Note: </b>Before API level 24, the default value for orientation is 0. Starting in 1625 * API level 24, the default orientation will be such that applications in forced-landscape mode 1626 * will have correct preview orientation, which may be either a default of 0 or 1627 * 180. Applications that operate in portrait mode or allow for changing orientation must still 1628 * call this method after each orientation change to ensure correct preview display in all 1629 * cases.</p> 1630 * 1631 * @param degrees the angle that the picture will be rotated clockwise. 1632 * Valid values are 0, 90, 180, and 270. 1633 * @throws RuntimeException if setting orientation fails; usually this would 1634 * be because of a hardware or other low-level error, or because 1635 * release() has been called on this Camera instance. 1636 * @see #setPreviewDisplay(SurfaceHolder) 1637 */ 1638 public native final void setDisplayOrientation(int degrees); 1639 1640 /** 1641 * <p>Enable or disable the default shutter sound when taking a picture.</p> 1642 * 1643 * <p>By default, the camera plays the system-defined camera shutter sound 1644 * when {@link #takePicture} is called. Using this method, the shutter sound 1645 * can be disabled. It is strongly recommended that an alternative shutter 1646 * sound is played in the {@link ShutterCallback} when the system shutter 1647 * sound is disabled.</p> 1648 * 1649 * <p>Note that devices may not always allow disabling the camera shutter 1650 * sound. If the shutter sound state cannot be set to the desired value, 1651 * this method will return false. {@link CameraInfo#canDisableShutterSound} 1652 * can be used to determine whether the device will allow the shutter sound 1653 * to be disabled.</p> 1654 * 1655 * @param enabled whether the camera should play the system shutter sound 1656 * when {@link #takePicture takePicture} is called. 1657 * @return {@code true} if the shutter sound state was successfully 1658 * changed. {@code false} if the shutter sound state could not be 1659 * changed. {@code true} is also returned if shutter sound playback 1660 * is already set to the requested state. 1661 * @throws RuntimeException if the call fails; usually this would be because 1662 * of a hardware or other low-level error, or because release() has been 1663 * called on this Camera instance. 1664 * @see #takePicture 1665 * @see CameraInfo#canDisableShutterSound 1666 * @see ShutterCallback 1667 */ 1668 public final boolean enableShutterSound(boolean enabled) { 1669 boolean canDisableShutterSound = true; 1670 IBinder b = ServiceManager.getService(Context.AUDIO_SERVICE); 1671 IAudioService audioService = IAudioService.Stub.asInterface(b); 1672 try { 1673 if (audioService.isCameraSoundForced()) { 1674 canDisableShutterSound = false; 1675 } 1676 } catch (RemoteException e) { 1677 Log.e(TAG, "Audio service is unavailable for queries"); 1678 } 1679 if (!enabled && !canDisableShutterSound) { 1680 return false; 1681 } 1682 synchronized (mShutterSoundLock) { 1683 mShutterSoundEnabledFromApp = enabled; 1684 // Return the result of _enableShutterSound(enabled) in all cases. 1685 // If the shutter sound can be disabled, disable it when the device is in DnD mode. 1686 boolean ret = _enableShutterSound(enabled); 1687 if (enabled && !mHasAppOpsPlayAudio) { 1688 Log.i(TAG, "Shutter sound is not allowed by AppOpsManager"); 1689 if (canDisableShutterSound) { 1690 _enableShutterSound(false); 1691 } 1692 } 1693 return ret; 1694 } 1695 } 1696 1697 /** 1698 * Disable the shutter sound unconditionally. 1699 * 1700 * <p> 1701 * This is only guaranteed to work for legacy cameras 1702 * (i.e. initialized with {@link #cameraInitUnspecified}). Trying to call this on 1703 * a regular camera will force a conditional check in the camera service. 1704 * </p> 1705 * 1706 * @return {@code true} if the shutter sound state was successfully 1707 * changed. {@code false} if the shutter sound state could not be 1708 * changed. {@code true} is also returned if shutter sound playback 1709 * is already set to the requested state. 1710 * 1711 * @hide 1712 */ 1713 public final boolean disableShutterSound() { 1714 return _enableShutterSound(/*enabled*/false); 1715 } 1716 1717 private native final boolean _enableShutterSound(boolean enabled); 1718 1719 private static class IAppOpsCallbackWrapper extends IAppOpsCallback.Stub { 1720 private final WeakReference<Camera> mWeakCamera; 1721 1722 IAppOpsCallbackWrapper(Camera camera) { 1723 mWeakCamera = new WeakReference<Camera>(camera); 1724 } 1725 1726 @Override 1727 public void opChanged(int op, int uid, String packageName) { 1728 if (op == AppOpsManager.OP_PLAY_AUDIO) { 1729 final Camera camera = mWeakCamera.get(); 1730 if (camera != null) { 1731 camera.updateAppOpsPlayAudio(); 1732 } 1733 } 1734 } 1735 } 1736 1737 private void updateAppOpsPlayAudio() { 1738 synchronized (mShutterSoundLock) { 1739 boolean oldHasAppOpsPlayAudio = mHasAppOpsPlayAudio; 1740 try { 1741 int mode = AppOpsManager.MODE_IGNORED; 1742 if (mAppOps != null) { 1743 mode = mAppOps.checkAudioOperation(AppOpsManager.OP_PLAY_AUDIO, 1744 AudioAttributes.USAGE_ASSISTANCE_SONIFICATION, 1745 Process.myUid(), ActivityThread.currentPackageName()); 1746 } 1747 mHasAppOpsPlayAudio = mode == AppOpsManager.MODE_ALLOWED; 1748 } catch (RemoteException e) { 1749 Log.e(TAG, "AppOpsService check audio operation failed"); 1750 mHasAppOpsPlayAudio = false; 1751 } 1752 if (oldHasAppOpsPlayAudio != mHasAppOpsPlayAudio) { 1753 if (!mHasAppOpsPlayAudio) { 1754 IBinder b = ServiceManager.getService(Context.AUDIO_SERVICE); 1755 IAudioService audioService = IAudioService.Stub.asInterface(b); 1756 try { 1757 if (audioService.isCameraSoundForced()) { 1758 return; 1759 } 1760 } catch (RemoteException e) { 1761 Log.e(TAG, "Audio service is unavailable for queries"); 1762 } 1763 _enableShutterSound(false); 1764 } else { 1765 enableShutterSound(mShutterSoundEnabledFromApp); 1766 } 1767 } 1768 } 1769 } 1770 1771 /** 1772 * Callback interface for zoom changes during a smooth zoom operation. 1773 * 1774 * @see #setZoomChangeListener(OnZoomChangeListener) 1775 * @see #startSmoothZoom(int) 1776 * 1777 * @deprecated We recommend using the new {@link android.hardware.camera2} API for new 1778 * applications. 1779 */ 1780 @Deprecated 1781 public interface OnZoomChangeListener 1782 { 1783 /** 1784 * Called when the zoom value has changed during a smooth zoom. 1785 * 1786 * @param zoomValue the current zoom value. In smooth zoom mode, camera 1787 * calls this for every new zoom value. 1788 * @param stopped whether smooth zoom is stopped. If the value is true, 1789 * this is the last zoom update for the application. 1790 * @param camera the Camera service object 1791 */ 1792 void onZoomChange(int zoomValue, boolean stopped, Camera camera); 1793 }; 1794 1795 /** 1796 * Registers a listener to be notified when the zoom value is updated by the 1797 * camera driver during smooth zoom. 1798 * 1799 * @param listener the listener to notify 1800 * @see #startSmoothZoom(int) 1801 */ 1802 public final void setZoomChangeListener(OnZoomChangeListener listener) 1803 { 1804 mZoomListener = listener; 1805 } 1806 1807 /** 1808 * Callback interface for face detected in the preview frame. 1809 * 1810 * @deprecated We recommend using the new {@link android.hardware.camera2} API for new 1811 * applications. 1812 */ 1813 @Deprecated 1814 public interface FaceDetectionListener 1815 { 1816 /** 1817 * Notify the listener of the detected faces in the preview frame. 1818 * 1819 * @param faces The detected faces in a list 1820 * @param camera The {@link Camera} service object 1821 */ 1822 void onFaceDetection(Face[] faces, Camera camera); 1823 } 1824 1825 /** 1826 * Registers a listener to be notified about the faces detected in the 1827 * preview frame. 1828 * 1829 * @param listener the listener to notify 1830 * @see #startFaceDetection() 1831 */ 1832 public final void setFaceDetectionListener(FaceDetectionListener listener) 1833 { 1834 mFaceListener = listener; 1835 } 1836 1837 /** 1838 * Starts the face detection. This should be called after preview is started. 1839 * The camera will notify {@link FaceDetectionListener} of the detected 1840 * faces in the preview frame. The detected faces may be the same as the 1841 * previous ones. Applications should call {@link #stopFaceDetection} to 1842 * stop the face detection. This method is supported if {@link 1843 * Parameters#getMaxNumDetectedFaces()} returns a number larger than 0. 1844 * If the face detection has started, apps should not call this again. 1845 * 1846 * <p>When the face detection is running, {@link Parameters#setWhiteBalance(String)}, 1847 * {@link Parameters#setFocusAreas(List)}, and {@link Parameters#setMeteringAreas(List)} 1848 * have no effect. The camera uses the detected faces to do auto-white balance, 1849 * auto exposure, and autofocus. 1850 * 1851 * <p>If the apps call {@link #autoFocus(AutoFocusCallback)}, the camera 1852 * will stop sending face callbacks. The last face callback indicates the 1853 * areas used to do autofocus. After focus completes, face detection will 1854 * resume sending face callbacks. If the apps call {@link 1855 * #cancelAutoFocus()}, the face callbacks will also resume.</p> 1856 * 1857 * <p>After calling {@link #takePicture(Camera.ShutterCallback, Camera.PictureCallback, 1858 * Camera.PictureCallback)} or {@link #stopPreview()}, and then resuming 1859 * preview with {@link #startPreview()}, the apps should call this method 1860 * again to resume face detection.</p> 1861 * 1862 * @throws IllegalArgumentException if the face detection is unsupported. 1863 * @throws RuntimeException if the method fails or the face detection is 1864 * already running. 1865 * @see FaceDetectionListener 1866 * @see #stopFaceDetection() 1867 * @see Parameters#getMaxNumDetectedFaces() 1868 */ 1869 public final void startFaceDetection() { 1870 if (mFaceDetectionRunning) { 1871 throw new RuntimeException("Face detection is already running"); 1872 } 1873 _startFaceDetection(CAMERA_FACE_DETECTION_HW); 1874 mFaceDetectionRunning = true; 1875 } 1876 1877 /** 1878 * Stops the face detection. 1879 * 1880 * @see #startFaceDetection() 1881 */ 1882 public final void stopFaceDetection() { 1883 _stopFaceDetection(); 1884 mFaceDetectionRunning = false; 1885 } 1886 1887 private native final void _startFaceDetection(int type); 1888 private native final void _stopFaceDetection(); 1889 1890 /** 1891 * Information about a face identified through camera face detection. 1892 * 1893 * <p>When face detection is used with a camera, the {@link FaceDetectionListener} returns a 1894 * list of face objects for use in focusing and metering.</p> 1895 * 1896 * @see FaceDetectionListener 1897 * @deprecated We recommend using the new {@link android.hardware.camera2} API for new 1898 * applications. 1899 */ 1900 @Deprecated 1901 public static class Face { 1902 /** 1903 * Create an empty face. 1904 */ 1905 public Face() { 1906 } 1907 1908 /** 1909 * Bounds of the face. (-1000, -1000) represents the top-left of the 1910 * camera field of view, and (1000, 1000) represents the bottom-right of 1911 * the field of view. For example, suppose the size of the viewfinder UI 1912 * is 800x480. The rect passed from the driver is (-1000, -1000, 0, 0). 1913 * The corresponding viewfinder rect should be (0, 0, 400, 240). It is 1914 * guaranteed left < right and top < bottom. The coordinates can be 1915 * smaller than -1000 or bigger than 1000. But at least one vertex will 1916 * be within (-1000, -1000) and (1000, 1000). 1917 * 1918 * <p>The direction is relative to the sensor orientation, that is, what 1919 * the sensor sees. The direction is not affected by the rotation or 1920 * mirroring of {@link #setDisplayOrientation(int)}. The face bounding 1921 * rectangle does not provide any information about face orientation.</p> 1922 * 1923 * <p>Here is the matrix to convert driver coordinates to View coordinates 1924 * in pixels.</p> 1925 * <pre> 1926 * Matrix matrix = new Matrix(); 1927 * CameraInfo info = CameraHolder.instance().getCameraInfo()[cameraId]; 1928 * // Need mirror for front camera. 1929 * boolean mirror = (info.facing == CameraInfo.CAMERA_FACING_FRONT); 1930 * matrix.setScale(mirror ? -1 : 1, 1); 1931 * // This is the value for android.hardware.Camera.setDisplayOrientation. 1932 * matrix.postRotate(displayOrientation); 1933 * // Camera driver coordinates range from (-1000, -1000) to (1000, 1000). 1934 * // UI coordinates range from (0, 0) to (width, height). 1935 * matrix.postScale(view.getWidth() / 2000f, view.getHeight() / 2000f); 1936 * matrix.postTranslate(view.getWidth() / 2f, view.getHeight() / 2f); 1937 * </pre> 1938 * 1939 * @see #startFaceDetection() 1940 */ 1941 public Rect rect; 1942 1943 /** 1944 * <p>The confidence level for the detection of the face. The range is 1 to 1945 * 100. 100 is the highest confidence.</p> 1946 * 1947 * <p>Depending on the device, even very low-confidence faces may be 1948 * listed, so applications should filter out faces with low confidence, 1949 * depending on the use case. For a typical point-and-shoot camera 1950 * application that wishes to display rectangles around detected faces, 1951 * filtering out faces with confidence less than 50 is recommended.</p> 1952 * 1953 * @see #startFaceDetection() 1954 */ 1955 public int score; 1956 1957 /** 1958 * An unique id per face while the face is visible to the tracker. If 1959 * the face leaves the field-of-view and comes back, it will get a new 1960 * id. This is an optional field, may not be supported on all devices. 1961 * If not supported, id will always be set to -1. The optional fields 1962 * are supported as a set. Either they are all valid, or none of them 1963 * are. 1964 */ 1965 public int id = -1; 1966 1967 /** 1968 * The coordinates of the center of the left eye. The coordinates are in 1969 * the same space as the ones for {@link #rect}. This is an optional 1970 * field, may not be supported on all devices. If not supported, the 1971 * value will always be set to null. The optional fields are supported 1972 * as a set. Either they are all valid, or none of them are. 1973 */ 1974 public Point leftEye = null; 1975 1976 /** 1977 * The coordinates of the center of the right eye. The coordinates are 1978 * in the same space as the ones for {@link #rect}.This is an optional 1979 * field, may not be supported on all devices. If not supported, the 1980 * value will always be set to null. The optional fields are supported 1981 * as a set. Either they are all valid, or none of them are. 1982 */ 1983 public Point rightEye = null; 1984 1985 /** 1986 * The coordinates of the center of the mouth. The coordinates are in 1987 * the same space as the ones for {@link #rect}. This is an optional 1988 * field, may not be supported on all devices. If not supported, the 1989 * value will always be set to null. The optional fields are supported 1990 * as a set. Either they are all valid, or none of them are. 1991 */ 1992 public Point mouth = null; 1993 } 1994 1995 /** 1996 * Unspecified camera error. 1997 * @see Camera.ErrorCallback 1998 */ 1999 public static final int CAMERA_ERROR_UNKNOWN = 1; 2000 2001 /** 2002 * Camera was disconnected due to use by higher priority user. 2003 * @see Camera.ErrorCallback 2004 */ 2005 public static final int CAMERA_ERROR_EVICTED = 2; 2006 2007 /** 2008 * Media server died. In this case, the application must release the 2009 * Camera object and instantiate a new one. 2010 * @see Camera.ErrorCallback 2011 */ 2012 public static final int CAMERA_ERROR_SERVER_DIED = 100; 2013 2014 /** 2015 * Callback interface for camera error notification. 2016 * 2017 * @see #setErrorCallback(ErrorCallback) 2018 * 2019 * @deprecated We recommend using the new {@link android.hardware.camera2} API for new 2020 * applications. 2021 */ 2022 @Deprecated 2023 public interface ErrorCallback 2024 { 2025 /** 2026 * Callback for camera errors. 2027 * @param error error code: 2028 * <ul> 2029 * <li>{@link #CAMERA_ERROR_UNKNOWN} 2030 * <li>{@link #CAMERA_ERROR_SERVER_DIED} 2031 * </ul> 2032 * @param camera the Camera service object 2033 */ 2034 void onError(int error, Camera camera); 2035 }; 2036 2037 /** 2038 * Registers a callback to be invoked when an error occurs. 2039 * @param cb The callback to run 2040 */ 2041 public final void setErrorCallback(ErrorCallback cb) 2042 { 2043 mErrorCallback = cb; 2044 } 2045 2046 private native final void native_setParameters(String params); 2047 private native final String native_getParameters(); 2048 2049 /** 2050 * Changes the settings for this Camera service. 2051 * 2052 * @param params the Parameters to use for this Camera service 2053 * @throws RuntimeException if any parameter is invalid or not supported. 2054 * @see #getParameters() 2055 */ 2056 public void setParameters(Parameters params) { 2057 // If using preview allocations, don't allow preview size changes 2058 if (mUsingPreviewAllocation) { 2059 Size newPreviewSize = params.getPreviewSize(); 2060 Size currentPreviewSize = getParameters().getPreviewSize(); 2061 if (newPreviewSize.width != currentPreviewSize.width || 2062 newPreviewSize.height != currentPreviewSize.height) { 2063 throw new IllegalStateException("Cannot change preview size" + 2064 " while a preview allocation is configured."); 2065 } 2066 } 2067 2068 native_setParameters(params.flatten()); 2069 } 2070 2071 /** 2072 * Returns the current settings for this Camera service. 2073 * If modifications are made to the returned Parameters, they must be passed 2074 * to {@link #setParameters(Camera.Parameters)} to take effect. 2075 * 2076 * @throws RuntimeException if reading parameters fails; usually this would 2077 * be because of a hardware or other low-level error, or because 2078 * release() has been called on this Camera instance. 2079 * @see #setParameters(Camera.Parameters) 2080 */ 2081 public Parameters getParameters() { 2082 Parameters p = new Parameters(); 2083 String s = native_getParameters(); 2084 p.unflatten(s); 2085 return p; 2086 } 2087 2088 /** 2089 * Returns an empty {@link Parameters} for testing purpose. 2090 * 2091 * @return a Parameter object. 2092 * 2093 * @hide 2094 */ 2095 public static Parameters getEmptyParameters() { 2096 Camera camera = new Camera(); 2097 return camera.new Parameters(); 2098 } 2099 2100 /** 2101 * Returns a copied {@link Parameters}; for shim use only. 2102 * 2103 * @param parameters a non-{@code null} parameters 2104 * @return a Parameter object, with all the parameters copied from {@code parameters}. 2105 * 2106 * @throws NullPointerException if {@code parameters} was {@code null} 2107 * @hide 2108 */ 2109 public static Parameters getParametersCopy(Camera.Parameters parameters) { 2110 if (parameters == null) { 2111 throw new NullPointerException("parameters must not be null"); 2112 } 2113 2114 Camera camera = parameters.getOuter(); 2115 Parameters p = camera.new Parameters(); 2116 p.copyFrom(parameters); 2117 2118 return p; 2119 } 2120 2121 /** 2122 * Image size (width and height dimensions). 2123 * @deprecated We recommend using the new {@link android.hardware.camera2} API for new 2124 * applications. 2125 */ 2126 @Deprecated 2127 public class Size { 2128 /** 2129 * Sets the dimensions for pictures. 2130 * 2131 * @param w the photo width (pixels) 2132 * @param h the photo height (pixels) 2133 */ 2134 public Size(int w, int h) { 2135 width = w; 2136 height = h; 2137 } 2138 /** 2139 * Compares {@code obj} to this size. 2140 * 2141 * @param obj the object to compare this size with. 2142 * @return {@code true} if the width and height of {@code obj} is the 2143 * same as those of this size. {@code false} otherwise. 2144 */ 2145 @Override 2146 public boolean equals(Object obj) { 2147 if (!(obj instanceof Size)) { 2148 return false; 2149 } 2150 Size s = (Size) obj; 2151 return width == s.width && height == s.height; 2152 } 2153 @Override 2154 public int hashCode() { 2155 return width * 32713 + height; 2156 } 2157 /** width of the picture */ 2158 public int width; 2159 /** height of the picture */ 2160 public int height; 2161 }; 2162 2163 /** 2164 * <p>The Area class is used for choosing specific metering and focus areas for 2165 * the camera to use when calculating auto-exposure, auto-white balance, and 2166 * auto-focus.</p> 2167 * 2168 * <p>To find out how many simultaneous areas a given camera supports, use 2169 * {@link Parameters#getMaxNumMeteringAreas()} and 2170 * {@link Parameters#getMaxNumFocusAreas()}. If metering or focusing area 2171 * selection is unsupported, these methods will return 0.</p> 2172 * 2173 * <p>Each Area consists of a rectangle specifying its bounds, and a weight 2174 * that determines its importance. The bounds are relative to the camera's 2175 * current field of view. The coordinates are mapped so that (-1000, -1000) 2176 * is always the top-left corner of the current field of view, and (1000, 2177 * 1000) is always the bottom-right corner of the current field of 2178 * view. Setting Areas with bounds outside that range is not allowed. Areas 2179 * with zero or negative width or height are not allowed.</p> 2180 * 2181 * <p>The weight must range from 1 to 1000, and represents a weight for 2182 * every pixel in the area. This means that a large metering area with 2183 * the same weight as a smaller area will have more effect in the 2184 * metering result. Metering areas can overlap and the driver 2185 * will add the weights in the overlap region.</p> 2186 * 2187 * @see Parameters#setFocusAreas(List) 2188 * @see Parameters#getFocusAreas() 2189 * @see Parameters#getMaxNumFocusAreas() 2190 * @see Parameters#setMeteringAreas(List) 2191 * @see Parameters#getMeteringAreas() 2192 * @see Parameters#getMaxNumMeteringAreas() 2193 * 2194 * @deprecated We recommend using the new {@link android.hardware.camera2} API for new 2195 * applications. 2196 */ 2197 @Deprecated 2198 public static class Area { 2199 /** 2200 * Create an area with specified rectangle and weight. 2201 * 2202 * @param rect the bounds of the area. 2203 * @param weight the weight of the area. 2204 */ 2205 public Area(Rect rect, int weight) { 2206 this.rect = rect; 2207 this.weight = weight; 2208 } 2209 /** 2210 * Compares {@code obj} to this area. 2211 * 2212 * @param obj the object to compare this area with. 2213 * @return {@code true} if the rectangle and weight of {@code obj} is 2214 * the same as those of this area. {@code false} otherwise. 2215 */ 2216 @Override 2217 public boolean equals(Object obj) { 2218 if (!(obj instanceof Area)) { 2219 return false; 2220 } 2221 Area a = (Area) obj; 2222 if (rect == null) { 2223 if (a.rect != null) return false; 2224 } else { 2225 if (!rect.equals(a.rect)) return false; 2226 } 2227 return weight == a.weight; 2228 } 2229 2230 /** 2231 * Bounds of the area. (-1000, -1000) represents the top-left of the 2232 * camera field of view, and (1000, 1000) represents the bottom-right of 2233 * the field of view. Setting bounds outside that range is not 2234 * allowed. Bounds with zero or negative width or height are not 2235 * allowed. 2236 * 2237 * @see Parameters#getFocusAreas() 2238 * @see Parameters#getMeteringAreas() 2239 */ 2240 public Rect rect; 2241 2242 /** 2243 * Weight of the area. The weight must range from 1 to 1000, and 2244 * represents a weight for every pixel in the area. This means that a 2245 * large metering area with the same weight as a smaller area will have 2246 * more effect in the metering result. Metering areas can overlap and 2247 * the driver will add the weights in the overlap region. 2248 * 2249 * @see Parameters#getFocusAreas() 2250 * @see Parameters#getMeteringAreas() 2251 */ 2252 public int weight; 2253 } 2254 2255 /** 2256 * Camera service settings. 2257 * 2258 * <p>To make camera parameters take effect, applications have to call 2259 * {@link Camera#setParameters(Camera.Parameters)}. For example, after 2260 * {@link Camera.Parameters#setWhiteBalance} is called, white balance is not 2261 * actually changed until {@link Camera#setParameters(Camera.Parameters)} 2262 * is called with the changed parameters object. 2263 * 2264 * <p>Different devices may have different camera capabilities, such as 2265 * picture size or flash modes. The application should query the camera 2266 * capabilities before setting parameters. For example, the application 2267 * should call {@link Camera.Parameters#getSupportedColorEffects()} before 2268 * calling {@link Camera.Parameters#setColorEffect(String)}. If the 2269 * camera does not support color effects, 2270 * {@link Camera.Parameters#getSupportedColorEffects()} will return null. 2271 * 2272 * @deprecated We recommend using the new {@link android.hardware.camera2} API for new 2273 * applications. 2274 */ 2275 @Deprecated 2276 public class Parameters { 2277 // Parameter keys to communicate with the camera driver. 2278 private static final String KEY_PREVIEW_SIZE = "preview-size"; 2279 private static final String KEY_PREVIEW_FORMAT = "preview-format"; 2280 private static final String KEY_PREVIEW_FRAME_RATE = "preview-frame-rate"; 2281 private static final String KEY_PREVIEW_FPS_RANGE = "preview-fps-range"; 2282 private static final String KEY_PICTURE_SIZE = "picture-size"; 2283 private static final String KEY_PICTURE_FORMAT = "picture-format"; 2284 private static final String KEY_JPEG_THUMBNAIL_SIZE = "jpeg-thumbnail-size"; 2285 private static final String KEY_JPEG_THUMBNAIL_WIDTH = "jpeg-thumbnail-width"; 2286 private static final String KEY_JPEG_THUMBNAIL_HEIGHT = "jpeg-thumbnail-height"; 2287 private static final String KEY_JPEG_THUMBNAIL_QUALITY = "jpeg-thumbnail-quality"; 2288 private static final String KEY_JPEG_QUALITY = "jpeg-quality"; 2289 private static final String KEY_ROTATION = "rotation"; 2290 private static final String KEY_GPS_LATITUDE = "gps-latitude"; 2291 private static final String KEY_GPS_LONGITUDE = "gps-longitude"; 2292 private static final String KEY_GPS_ALTITUDE = "gps-altitude"; 2293 private static final String KEY_GPS_TIMESTAMP = "gps-timestamp"; 2294 private static final String KEY_GPS_PROCESSING_METHOD = "gps-processing-method"; 2295 private static final String KEY_WHITE_BALANCE = "whitebalance"; 2296 private static final String KEY_EFFECT = "effect"; 2297 private static final String KEY_ANTIBANDING = "antibanding"; 2298 private static final String KEY_SCENE_MODE = "scene-mode"; 2299 private static final String KEY_FLASH_MODE = "flash-mode"; 2300 private static final String KEY_FOCUS_MODE = "focus-mode"; 2301 private static final String KEY_FOCUS_AREAS = "focus-areas"; 2302 private static final String KEY_MAX_NUM_FOCUS_AREAS = "max-num-focus-areas"; 2303 private static final String KEY_FOCAL_LENGTH = "focal-length"; 2304 private static final String KEY_HORIZONTAL_VIEW_ANGLE = "horizontal-view-angle"; 2305 private static final String KEY_VERTICAL_VIEW_ANGLE = "vertical-view-angle"; 2306 private static final String KEY_EXPOSURE_COMPENSATION = "exposure-compensation"; 2307 private static final String KEY_MAX_EXPOSURE_COMPENSATION = "max-exposure-compensation"; 2308 private static final String KEY_MIN_EXPOSURE_COMPENSATION = "min-exposure-compensation"; 2309 private static final String KEY_EXPOSURE_COMPENSATION_STEP = "exposure-compensation-step"; 2310 private static final String KEY_AUTO_EXPOSURE_LOCK = "auto-exposure-lock"; 2311 private static final String KEY_AUTO_EXPOSURE_LOCK_SUPPORTED = "auto-exposure-lock-supported"; 2312 private static final String KEY_AUTO_WHITEBALANCE_LOCK = "auto-whitebalance-lock"; 2313 private static final String KEY_AUTO_WHITEBALANCE_LOCK_SUPPORTED = "auto-whitebalance-lock-supported"; 2314 private static final String KEY_METERING_AREAS = "metering-areas"; 2315 private static final String KEY_MAX_NUM_METERING_AREAS = "max-num-metering-areas"; 2316 private static final String KEY_ZOOM = "zoom"; 2317 private static final String KEY_MAX_ZOOM = "max-zoom"; 2318 private static final String KEY_ZOOM_RATIOS = "zoom-ratios"; 2319 private static final String KEY_ZOOM_SUPPORTED = "zoom-supported"; 2320 private static final String KEY_SMOOTH_ZOOM_SUPPORTED = "smooth-zoom-supported"; 2321 private static final String KEY_FOCUS_DISTANCES = "focus-distances"; 2322 private static final String KEY_VIDEO_SIZE = "video-size"; 2323 private static final String KEY_PREFERRED_PREVIEW_SIZE_FOR_VIDEO = 2324 "preferred-preview-size-for-video"; 2325 private static final String KEY_MAX_NUM_DETECTED_FACES_HW = "max-num-detected-faces-hw"; 2326 private static final String KEY_MAX_NUM_DETECTED_FACES_SW = "max-num-detected-faces-sw"; 2327 private static final String KEY_RECORDING_HINT = "recording-hint"; 2328 private static final String KEY_VIDEO_SNAPSHOT_SUPPORTED = "video-snapshot-supported"; 2329 private static final String KEY_VIDEO_STABILIZATION = "video-stabilization"; 2330 private static final String KEY_VIDEO_STABILIZATION_SUPPORTED = "video-stabilization-supported"; 2331 2332 // Parameter key suffix for supported values. 2333 private static final String SUPPORTED_VALUES_SUFFIX = "-values"; 2334 2335 private static final String TRUE = "true"; 2336 private static final String FALSE = "false"; 2337 2338 // Values for white balance settings. 2339 public static final String WHITE_BALANCE_AUTO = "auto"; 2340 public static final String WHITE_BALANCE_INCANDESCENT = "incandescent"; 2341 public static final String WHITE_BALANCE_FLUORESCENT = "fluorescent"; 2342 public static final String WHITE_BALANCE_WARM_FLUORESCENT = "warm-fluorescent"; 2343 public static final String WHITE_BALANCE_DAYLIGHT = "daylight"; 2344 public static final String WHITE_BALANCE_CLOUDY_DAYLIGHT = "cloudy-daylight"; 2345 public static final String WHITE_BALANCE_TWILIGHT = "twilight"; 2346 public static final String WHITE_BALANCE_SHADE = "shade"; 2347 2348 // Values for color effect settings. 2349 public static final String EFFECT_NONE = "none"; 2350 public static final String EFFECT_MONO = "mono"; 2351 public static final String EFFECT_NEGATIVE = "negative"; 2352 public static final String EFFECT_SOLARIZE = "solarize"; 2353 public static final String EFFECT_SEPIA = "sepia"; 2354 public static final String EFFECT_POSTERIZE = "posterize"; 2355 public static final String EFFECT_WHITEBOARD = "whiteboard"; 2356 public static final String EFFECT_BLACKBOARD = "blackboard"; 2357 public static final String EFFECT_AQUA = "aqua"; 2358 2359 // Values for antibanding settings. 2360 public static final String ANTIBANDING_AUTO = "auto"; 2361 public static final String ANTIBANDING_50HZ = "50hz"; 2362 public static final String ANTIBANDING_60HZ = "60hz"; 2363 public static final String ANTIBANDING_OFF = "off"; 2364 2365 // Values for flash mode settings. 2366 /** 2367 * Flash will not be fired. 2368 */ 2369 public static final String FLASH_MODE_OFF = "off"; 2370 2371 /** 2372 * Flash will be fired automatically when required. The flash may be fired 2373 * during preview, auto-focus, or snapshot depending on the driver. 2374 */ 2375 public static final String FLASH_MODE_AUTO = "auto"; 2376 2377 /** 2378 * Flash will always be fired during snapshot. The flash may also be 2379 * fired during preview or auto-focus depending on the driver. 2380 */ 2381 public static final String FLASH_MODE_ON = "on"; 2382 2383 /** 2384 * Flash will be fired in red-eye reduction mode. 2385 */ 2386 public static final String FLASH_MODE_RED_EYE = "red-eye"; 2387 2388 /** 2389 * Constant emission of light during preview, auto-focus and snapshot. 2390 * This can also be used for video recording. 2391 */ 2392 public static final String FLASH_MODE_TORCH = "torch"; 2393 2394 /** 2395 * Scene mode is off. 2396 */ 2397 public static final String SCENE_MODE_AUTO = "auto"; 2398 2399 /** 2400 * Take photos of fast moving objects. Same as {@link 2401 * #SCENE_MODE_SPORTS}. 2402 */ 2403 public static final String SCENE_MODE_ACTION = "action"; 2404 2405 /** 2406 * Take people pictures. 2407 */ 2408 public static final String SCENE_MODE_PORTRAIT = "portrait"; 2409 2410 /** 2411 * Take pictures on distant objects. 2412 */ 2413 public static final String SCENE_MODE_LANDSCAPE = "landscape"; 2414 2415 /** 2416 * Take photos at night. 2417 */ 2418 public static final String SCENE_MODE_NIGHT = "night"; 2419 2420 /** 2421 * Take people pictures at night. 2422 */ 2423 public static final String SCENE_MODE_NIGHT_PORTRAIT = "night-portrait"; 2424 2425 /** 2426 * Take photos in a theater. Flash light is off. 2427 */ 2428 public static final String SCENE_MODE_THEATRE = "theatre"; 2429 2430 /** 2431 * Take pictures on the beach. 2432 */ 2433 public static final String SCENE_MODE_BEACH = "beach"; 2434 2435 /** 2436 * Take pictures on the snow. 2437 */ 2438 public static final String SCENE_MODE_SNOW = "snow"; 2439 2440 /** 2441 * Take sunset photos. 2442 */ 2443 public static final String SCENE_MODE_SUNSET = "sunset"; 2444 2445 /** 2446 * Avoid blurry pictures (for example, due to hand shake). 2447 */ 2448 public static final String SCENE_MODE_STEADYPHOTO = "steadyphoto"; 2449 2450 /** 2451 * For shooting firework displays. 2452 */ 2453 public static final String SCENE_MODE_FIREWORKS = "fireworks"; 2454 2455 /** 2456 * Take photos of fast moving objects. Same as {@link 2457 * #SCENE_MODE_ACTION}. 2458 */ 2459 public static final String SCENE_MODE_SPORTS = "sports"; 2460 2461 /** 2462 * Take indoor low-light shot. 2463 */ 2464 public static final String SCENE_MODE_PARTY = "party"; 2465 2466 /** 2467 * Capture the naturally warm color of scenes lit by candles. 2468 */ 2469 public static final String SCENE_MODE_CANDLELIGHT = "candlelight"; 2470 2471 /** 2472 * Applications are looking for a barcode. Camera driver will be 2473 * optimized for barcode reading. 2474 */ 2475 public static final String SCENE_MODE_BARCODE = "barcode"; 2476 2477 /** 2478 * Capture a scene using high dynamic range imaging techniques. The 2479 * camera will return an image that has an extended dynamic range 2480 * compared to a regular capture. Capturing such an image may take 2481 * longer than a regular capture. 2482 */ 2483 public static final String SCENE_MODE_HDR = "hdr"; 2484 2485 /** 2486 * Auto-focus mode. Applications should call {@link 2487 * #autoFocus(AutoFocusCallback)} to start the focus in this mode. 2488 */ 2489 public static final String FOCUS_MODE_AUTO = "auto"; 2490 2491 /** 2492 * Focus is set at infinity. Applications should not call 2493 * {@link #autoFocus(AutoFocusCallback)} in this mode. 2494 */ 2495 public static final String FOCUS_MODE_INFINITY = "infinity"; 2496 2497 /** 2498 * Macro (close-up) focus mode. Applications should call 2499 * {@link #autoFocus(AutoFocusCallback)} to start the focus in this 2500 * mode. 2501 */ 2502 public static final String FOCUS_MODE_MACRO = "macro"; 2503 2504 /** 2505 * Focus is fixed. The camera is always in this mode if the focus is not 2506 * adjustable. If the camera has auto-focus, this mode can fix the 2507 * focus, which is usually at hyperfocal distance. Applications should 2508 * not call {@link #autoFocus(AutoFocusCallback)} in this mode. 2509 */ 2510 public static final String FOCUS_MODE_FIXED = "fixed"; 2511 2512 /** 2513 * Extended depth of field (EDOF). Focusing is done digitally and 2514 * continuously. Applications should not call {@link 2515 * #autoFocus(AutoFocusCallback)} in this mode. 2516 */ 2517 public static final String FOCUS_MODE_EDOF = "edof"; 2518 2519 /** 2520 * Continuous auto focus mode intended for video recording. The camera 2521 * continuously tries to focus. This is the best choice for video 2522 * recording because the focus changes smoothly . Applications still can 2523 * call {@link #takePicture(Camera.ShutterCallback, 2524 * Camera.PictureCallback, Camera.PictureCallback)} in this mode but the 2525 * subject may not be in focus. Auto focus starts when the parameter is 2526 * set. 2527 * 2528 * <p>Since API level 14, applications can call {@link 2529 * #autoFocus(AutoFocusCallback)} in this mode. The focus callback will 2530 * immediately return with a boolean that indicates whether the focus is 2531 * sharp or not. The focus position is locked after autoFocus call. If 2532 * applications want to resume the continuous focus, cancelAutoFocus 2533 * must be called. Restarting the preview will not resume the continuous 2534 * autofocus. To stop continuous focus, applications should change the 2535 * focus mode to other modes. 2536 * 2537 * @see #FOCUS_MODE_CONTINUOUS_PICTURE 2538 */ 2539 public static final String FOCUS_MODE_CONTINUOUS_VIDEO = "continuous-video"; 2540 2541 /** 2542 * Continuous auto focus mode intended for taking pictures. The camera 2543 * continuously tries to focus. The speed of focus change is more 2544 * aggressive than {@link #FOCUS_MODE_CONTINUOUS_VIDEO}. Auto focus 2545 * starts when the parameter is set. 2546 * 2547 * <p>Applications can call {@link #autoFocus(AutoFocusCallback)} in 2548 * this mode. If the autofocus is in the middle of scanning, the focus 2549 * callback will return when it completes. If the autofocus is not 2550 * scanning, the focus callback will immediately return with a boolean 2551 * that indicates whether the focus is sharp or not. The apps can then 2552 * decide if they want to take a picture immediately or to change the 2553 * focus mode to auto, and run a full autofocus cycle. The focus 2554 * position is locked after autoFocus call. If applications want to 2555 * resume the continuous focus, cancelAutoFocus must be called. 2556 * Restarting the preview will not resume the continuous autofocus. To 2557 * stop continuous focus, applications should change the focus mode to 2558 * other modes. 2559 * 2560 * @see #FOCUS_MODE_CONTINUOUS_VIDEO 2561 */ 2562 public static final String FOCUS_MODE_CONTINUOUS_PICTURE = "continuous-picture"; 2563 2564 // Indices for focus distance array. 2565 /** 2566 * The array index of near focus distance for use with 2567 * {@link #getFocusDistances(float[])}. 2568 */ 2569 public static final int FOCUS_DISTANCE_NEAR_INDEX = 0; 2570 2571 /** 2572 * The array index of optimal focus distance for use with 2573 * {@link #getFocusDistances(float[])}. 2574 */ 2575 public static final int FOCUS_DISTANCE_OPTIMAL_INDEX = 1; 2576 2577 /** 2578 * The array index of far focus distance for use with 2579 * {@link #getFocusDistances(float[])}. 2580 */ 2581 public static final int FOCUS_DISTANCE_FAR_INDEX = 2; 2582 2583 /** 2584 * The array index of minimum preview fps for use with {@link 2585 * #getPreviewFpsRange(int[])} or {@link 2586 * #getSupportedPreviewFpsRange()}. 2587 */ 2588 public static final int PREVIEW_FPS_MIN_INDEX = 0; 2589 2590 /** 2591 * The array index of maximum preview fps for use with {@link 2592 * #getPreviewFpsRange(int[])} or {@link 2593 * #getSupportedPreviewFpsRange()}. 2594 */ 2595 public static final int PREVIEW_FPS_MAX_INDEX = 1; 2596 2597 // Formats for setPreviewFormat and setPictureFormat. 2598 private static final String PIXEL_FORMAT_YUV422SP = "yuv422sp"; 2599 private static final String PIXEL_FORMAT_YUV420SP = "yuv420sp"; 2600 private static final String PIXEL_FORMAT_YUV422I = "yuv422i-yuyv"; 2601 private static final String PIXEL_FORMAT_YUV420P = "yuv420p"; 2602 private static final String PIXEL_FORMAT_RGB565 = "rgb565"; 2603 private static final String PIXEL_FORMAT_JPEG = "jpeg"; 2604 private static final String PIXEL_FORMAT_BAYER_RGGB = "bayer-rggb"; 2605 2606 /** 2607 * Order matters: Keys that are {@link #set(String, String) set} later 2608 * will take precedence over keys that are set earlier (if the two keys 2609 * conflict with each other). 2610 * 2611 * <p>One example is {@link #setPreviewFpsRange(int, int)} , since it 2612 * conflicts with {@link #setPreviewFrameRate(int)} whichever key is set later 2613 * is the one that will take precedence. 2614 * </p> 2615 */ 2616 private final LinkedHashMap<String, String> mMap; 2617 2618 private Parameters() { 2619 mMap = new LinkedHashMap<String, String>(/*initialCapacity*/64); 2620 } 2621 2622 /** 2623 * Overwrite existing parameters with a copy of the ones from {@code other}. 2624 * 2625 * <b>For use by the legacy shim only.</b> 2626 * 2627 * @hide 2628 */ 2629 public void copyFrom(Parameters other) { 2630 if (other == null) { 2631 throw new NullPointerException("other must not be null"); 2632 } 2633 2634 mMap.putAll(other.mMap); 2635 } 2636 2637 private Camera getOuter() { 2638 return Camera.this; 2639 } 2640 2641 2642 /** 2643 * Value equality check. 2644 * 2645 * @hide 2646 */ 2647 public boolean same(Parameters other) { 2648 if (this == other) { 2649 return true; 2650 } 2651 return other != null && Parameters.this.mMap.equals(other.mMap); 2652 } 2653 2654 /** 2655 * Writes the current Parameters to the log. 2656 * @hide 2657 * @deprecated 2658 */ 2659 @Deprecated 2660 public void dump() { 2661 Log.e(TAG, "dump: size=" + mMap.size()); 2662 for (String k : mMap.keySet()) { 2663 Log.e(TAG, "dump: " + k + "=" + mMap.get(k)); 2664 } 2665 } 2666 2667 /** 2668 * Creates a single string with all the parameters set in 2669 * this Parameters object. 2670 * <p>The {@link #unflatten(String)} method does the reverse.</p> 2671 * 2672 * @return a String with all values from this Parameters object, in 2673 * semi-colon delimited key-value pairs 2674 */ 2675 public String flatten() { 2676 StringBuilder flattened = new StringBuilder(128); 2677 for (String k : mMap.keySet()) { 2678 flattened.append(k); 2679 flattened.append("="); 2680 flattened.append(mMap.get(k)); 2681 flattened.append(";"); 2682 } 2683 // chop off the extra semicolon at the end 2684 flattened.deleteCharAt(flattened.length()-1); 2685 return flattened.toString(); 2686 } 2687 2688 /** 2689 * Takes a flattened string of parameters and adds each one to 2690 * this Parameters object. 2691 * <p>The {@link #flatten()} method does the reverse.</p> 2692 * 2693 * @param flattened a String of parameters (key-value paired) that 2694 * are semi-colon delimited 2695 */ 2696 public void unflatten(String flattened) { 2697 mMap.clear(); 2698 2699 TextUtils.StringSplitter splitter = new TextUtils.SimpleStringSplitter(';'); 2700 splitter.setString(flattened); 2701 for (String kv : splitter) { 2702 int pos = kv.indexOf('='); 2703 if (pos == -1) { 2704 continue; 2705 } 2706 String k = kv.substring(0, pos); 2707 String v = kv.substring(pos + 1); 2708 mMap.put(k, v); 2709 } 2710 } 2711 2712 public void remove(String key) { 2713 mMap.remove(key); 2714 } 2715 2716 /** 2717 * Sets a String parameter. 2718 * 2719 * @param key the key name for the parameter 2720 * @param value the String value of the parameter 2721 */ 2722 public void set(String key, String value) { 2723 if (key.indexOf('=') != -1 || key.indexOf(';') != -1 || key.indexOf(0) != -1) { 2724 Log.e(TAG, "Key \"" + key + "\" contains invalid character (= or ; or \\0)"); 2725 return; 2726 } 2727 if (value.indexOf('=') != -1 || value.indexOf(';') != -1 || value.indexOf(0) != -1) { 2728 Log.e(TAG, "Value \"" + value + "\" contains invalid character (= or ; or \\0)"); 2729 return; 2730 } 2731 2732 put(key, value); 2733 } 2734 2735 /** 2736 * Sets an integer parameter. 2737 * 2738 * @param key the key name for the parameter 2739 * @param value the int value of the parameter 2740 */ 2741 public void set(String key, int value) { 2742 put(key, Integer.toString(value)); 2743 } 2744 2745 private void put(String key, String value) { 2746 /* 2747 * Remove the key if it already exists. 2748 * 2749 * This way setting a new value for an already existing key will always move 2750 * that key to be ordered the latest in the map. 2751 */ 2752 mMap.remove(key); 2753 mMap.put(key, value); 2754 } 2755 2756 private void set(String key, List<Area> areas) { 2757 if (areas == null) { 2758 set(key, "(0,0,0,0,0)"); 2759 } else { 2760 StringBuilder buffer = new StringBuilder(); 2761 for (int i = 0; i < areas.size(); i++) { 2762 Area area = areas.get(i); 2763 Rect rect = area.rect; 2764 buffer.append('('); 2765 buffer.append(rect.left); 2766 buffer.append(','); 2767 buffer.append(rect.top); 2768 buffer.append(','); 2769 buffer.append(rect.right); 2770 buffer.append(','); 2771 buffer.append(rect.bottom); 2772 buffer.append(','); 2773 buffer.append(area.weight); 2774 buffer.append(')'); 2775 if (i != areas.size() - 1) buffer.append(','); 2776 } 2777 set(key, buffer.toString()); 2778 } 2779 } 2780 2781 /** 2782 * Returns the value of a String parameter. 2783 * 2784 * @param key the key name for the parameter 2785 * @return the String value of the parameter 2786 */ 2787 public String get(String key) { 2788 return mMap.get(key); 2789 } 2790 2791 /** 2792 * Returns the value of an integer parameter. 2793 * 2794 * @param key the key name for the parameter 2795 * @return the int value of the parameter 2796 */ 2797 public int getInt(String key) { 2798 return Integer.parseInt(mMap.get(key)); 2799 } 2800 2801 /** 2802 * Sets the dimensions for preview pictures. If the preview has already 2803 * started, applications should stop the preview first before changing 2804 * preview size. 2805 * 2806 * The sides of width and height are based on camera orientation. That 2807 * is, the preview size is the size before it is rotated by display 2808 * orientation. So applications need to consider the display orientation 2809 * while setting preview size. For example, suppose the camera supports 2810 * both 480x320 and 320x480 preview sizes. The application wants a 3:2 2811 * preview ratio. If the display orientation is set to 0 or 180, preview 2812 * size should be set to 480x320. If the display orientation is set to 2813 * 90 or 270, preview size should be set to 320x480. The display 2814 * orientation should also be considered while setting picture size and 2815 * thumbnail size. 2816 * 2817 * @param width the width of the pictures, in pixels 2818 * @param height the height of the pictures, in pixels 2819 * @see #setDisplayOrientation(int) 2820 * @see #getCameraInfo(int, CameraInfo) 2821 * @see #setPictureSize(int, int) 2822 * @see #setJpegThumbnailSize(int, int) 2823 */ 2824 public void setPreviewSize(int width, int height) { 2825 String v = Integer.toString(width) + "x" + Integer.toString(height); 2826 set(KEY_PREVIEW_SIZE, v); 2827 } 2828 2829 /** 2830 * Returns the dimensions setting for preview pictures. 2831 * 2832 * @return a Size object with the width and height setting 2833 * for the preview picture 2834 */ 2835 public Size getPreviewSize() { 2836 String pair = get(KEY_PREVIEW_SIZE); 2837 return strToSize(pair); 2838 } 2839 2840 /** 2841 * Gets the supported preview sizes. 2842 * 2843 * @return a list of Size object. This method will always return a list 2844 * with at least one element. 2845 */ 2846 public List<Size> getSupportedPreviewSizes() { 2847 String str = get(KEY_PREVIEW_SIZE + SUPPORTED_VALUES_SUFFIX); 2848 return splitSize(str); 2849 } 2850 2851 /** 2852 * <p>Gets the supported video frame sizes that can be used by 2853 * MediaRecorder.</p> 2854 * 2855 * <p>If the returned list is not null, the returned list will contain at 2856 * least one Size and one of the sizes in the returned list must be 2857 * passed to MediaRecorder.setVideoSize() for camcorder application if 2858 * camera is used as the video source. In this case, the size of the 2859 * preview can be different from the resolution of the recorded video 2860 * during video recording.</p> 2861 * 2862 * @return a list of Size object if camera has separate preview and 2863 * video output; otherwise, null is returned. 2864 * @see #getPreferredPreviewSizeForVideo() 2865 */ 2866 public List<Size> getSupportedVideoSizes() { 2867 String str = get(KEY_VIDEO_SIZE + SUPPORTED_VALUES_SUFFIX); 2868 return splitSize(str); 2869 } 2870 2871 /** 2872 * Returns the preferred or recommended preview size (width and height) 2873 * in pixels for video recording. Camcorder applications should 2874 * set the preview size to a value that is not larger than the 2875 * preferred preview size. In other words, the product of the width 2876 * and height of the preview size should not be larger than that of 2877 * the preferred preview size. In addition, we recommend to choose a 2878 * preview size that has the same aspect ratio as the resolution of 2879 * video to be recorded. 2880 * 2881 * @return the preferred preview size (width and height) in pixels for 2882 * video recording if getSupportedVideoSizes() does not return 2883 * null; otherwise, null is returned. 2884 * @see #getSupportedVideoSizes() 2885 */ 2886 public Size getPreferredPreviewSizeForVideo() { 2887 String pair = get(KEY_PREFERRED_PREVIEW_SIZE_FOR_VIDEO); 2888 return strToSize(pair); 2889 } 2890 2891 /** 2892 * <p>Sets the dimensions for EXIF thumbnail in Jpeg picture. If 2893 * applications set both width and height to 0, EXIF will not contain 2894 * thumbnail.</p> 2895 * 2896 * <p>Applications need to consider the display orientation. See {@link 2897 * #setPreviewSize(int,int)} for reference.</p> 2898 * 2899 * @param width the width of the thumbnail, in pixels 2900 * @param height the height of the thumbnail, in pixels 2901 * @see #setPreviewSize(int,int) 2902 */ 2903 public void setJpegThumbnailSize(int width, int height) { 2904 set(KEY_JPEG_THUMBNAIL_WIDTH, width); 2905 set(KEY_JPEG_THUMBNAIL_HEIGHT, height); 2906 } 2907 2908 /** 2909 * Returns the dimensions for EXIF thumbnail in Jpeg picture. 2910 * 2911 * @return a Size object with the height and width setting for the EXIF 2912 * thumbnails 2913 */ 2914 public Size getJpegThumbnailSize() { 2915 return new Size(getInt(KEY_JPEG_THUMBNAIL_WIDTH), 2916 getInt(KEY_JPEG_THUMBNAIL_HEIGHT)); 2917 } 2918 2919 /** 2920 * Gets the supported jpeg thumbnail sizes. 2921 * 2922 * @return a list of Size object. This method will always return a list 2923 * with at least two elements. Size 0,0 (no thumbnail) is always 2924 * supported. 2925 */ 2926 public List<Size> getSupportedJpegThumbnailSizes() { 2927 String str = get(KEY_JPEG_THUMBNAIL_SIZE + SUPPORTED_VALUES_SUFFIX); 2928 return splitSize(str); 2929 } 2930 2931 /** 2932 * Sets the quality of the EXIF thumbnail in Jpeg picture. 2933 * 2934 * @param quality the JPEG quality of the EXIF thumbnail. The range is 1 2935 * to 100, with 100 being the best. 2936 */ 2937 public void setJpegThumbnailQuality(int quality) { 2938 set(KEY_JPEG_THUMBNAIL_QUALITY, quality); 2939 } 2940 2941 /** 2942 * Returns the quality setting for the EXIF thumbnail in Jpeg picture. 2943 * 2944 * @return the JPEG quality setting of the EXIF thumbnail. 2945 */ 2946 public int getJpegThumbnailQuality() { 2947 return getInt(KEY_JPEG_THUMBNAIL_QUALITY); 2948 } 2949 2950 /** 2951 * Sets Jpeg quality of captured picture. 2952 * 2953 * @param quality the JPEG quality of captured picture. The range is 1 2954 * to 100, with 100 being the best. 2955 */ 2956 public void setJpegQuality(int quality) { 2957 set(KEY_JPEG_QUALITY, quality); 2958 } 2959 2960 /** 2961 * Returns the quality setting for the JPEG picture. 2962 * 2963 * @return the JPEG picture quality setting. 2964 */ 2965 public int getJpegQuality() { 2966 return getInt(KEY_JPEG_QUALITY); 2967 } 2968 2969 /** 2970 * Sets the rate at which preview frames are received. This is the 2971 * target frame rate. The actual frame rate depends on the driver. 2972 * 2973 * @param fps the frame rate (frames per second) 2974 * @deprecated replaced by {@link #setPreviewFpsRange(int,int)} 2975 */ 2976 @Deprecated 2977 public void setPreviewFrameRate(int fps) { 2978 set(KEY_PREVIEW_FRAME_RATE, fps); 2979 } 2980 2981 /** 2982 * Returns the setting for the rate at which preview frames are 2983 * received. This is the target frame rate. The actual frame rate 2984 * depends on the driver. 2985 * 2986 * @return the frame rate setting (frames per second) 2987 * @deprecated replaced by {@link #getPreviewFpsRange(int[])} 2988 */ 2989 @Deprecated 2990 public int getPreviewFrameRate() { 2991 return getInt(KEY_PREVIEW_FRAME_RATE); 2992 } 2993 2994 /** 2995 * Gets the supported preview frame rates. 2996 * 2997 * @return a list of supported preview frame rates. null if preview 2998 * frame rate setting is not supported. 2999 * @deprecated replaced by {@link #getSupportedPreviewFpsRange()} 3000 */ 3001 @Deprecated 3002 public List<Integer> getSupportedPreviewFrameRates() { 3003 String str = get(KEY_PREVIEW_FRAME_RATE + SUPPORTED_VALUES_SUFFIX); 3004 return splitInt(str); 3005 } 3006 3007 /** 3008 * Sets the minimum and maximum preview fps. This controls the rate of 3009 * preview frames received in {@link PreviewCallback}. The minimum and 3010 * maximum preview fps must be one of the elements from {@link 3011 * #getSupportedPreviewFpsRange}. 3012 * 3013 * @param min the minimum preview fps (scaled by 1000). 3014 * @param max the maximum preview fps (scaled by 1000). 3015 * @throws RuntimeException if fps range is invalid. 3016 * @see #setPreviewCallbackWithBuffer(Camera.PreviewCallback) 3017 * @see #getSupportedPreviewFpsRange() 3018 */ 3019 public void setPreviewFpsRange(int min, int max) { 3020 set(KEY_PREVIEW_FPS_RANGE, "" + min + "," + max); 3021 } 3022 3023 /** 3024 * Returns the current minimum and maximum preview fps. The values are 3025 * one of the elements returned by {@link #getSupportedPreviewFpsRange}. 3026 * 3027 * @return range the minimum and maximum preview fps (scaled by 1000). 3028 * @see #PREVIEW_FPS_MIN_INDEX 3029 * @see #PREVIEW_FPS_MAX_INDEX 3030 * @see #getSupportedPreviewFpsRange() 3031 */ 3032 public void getPreviewFpsRange(int[] range) { 3033 if (range == null || range.length != 2) { 3034 throw new IllegalArgumentException( 3035 "range must be an array with two elements."); 3036 } 3037 splitInt(get(KEY_PREVIEW_FPS_RANGE), range); 3038 } 3039 3040 /** 3041 * Gets the supported preview fps (frame-per-second) ranges. Each range 3042 * contains a minimum fps and maximum fps. If minimum fps equals to 3043 * maximum fps, the camera outputs frames in fixed frame rate. If not, 3044 * the camera outputs frames in auto frame rate. The actual frame rate 3045 * fluctuates between the minimum and the maximum. The values are 3046 * multiplied by 1000 and represented in integers. For example, if frame 3047 * rate is 26.623 frames per second, the value is 26623. 3048 * 3049 * @return a list of supported preview fps ranges. This method returns a 3050 * list with at least one element. Every element is an int array 3051 * of two values - minimum fps and maximum fps. The list is 3052 * sorted from small to large (first by maximum fps and then 3053 * minimum fps). 3054 * @see #PREVIEW_FPS_MIN_INDEX 3055 * @see #PREVIEW_FPS_MAX_INDEX 3056 */ 3057 public List<int[]> getSupportedPreviewFpsRange() { 3058 String str = get(KEY_PREVIEW_FPS_RANGE + SUPPORTED_VALUES_SUFFIX); 3059 return splitRange(str); 3060 } 3061 3062 /** 3063 * Sets the image format for preview pictures. 3064 * <p>If this is never called, the default format will be 3065 * {@link android.graphics.ImageFormat#NV21}, which 3066 * uses the NV21 encoding format.</p> 3067 * 3068 * <p>Use {@link Parameters#getSupportedPreviewFormats} to get a list of 3069 * the available preview formats. 3070 * 3071 * <p>It is strongly recommended that either 3072 * {@link android.graphics.ImageFormat#NV21} or 3073 * {@link android.graphics.ImageFormat#YV12} is used, since 3074 * they are supported by all camera devices.</p> 3075 * 3076 * <p>For YV12, the image buffer that is received is not necessarily 3077 * tightly packed, as there may be padding at the end of each row of 3078 * pixel data, as described in 3079 * {@link android.graphics.ImageFormat#YV12}. For camera callback data, 3080 * it can be assumed that the stride of the Y and UV data is the 3081 * smallest possible that meets the alignment requirements. That is, if 3082 * the preview size is <var>width x height</var>, then the following 3083 * equations describe the buffer index for the beginning of row 3084 * <var>y</var> for the Y plane and row <var>c</var> for the U and V 3085 * planes: 3086 * 3087 * <pre>{@code 3088 * yStride = (int) ceil(width / 16.0) * 16; 3089 * uvStride = (int) ceil( (yStride / 2) / 16.0) * 16; 3090 * ySize = yStride * height; 3091 * uvSize = uvStride * height / 2; 3092 * yRowIndex = yStride * y; 3093 * uRowIndex = ySize + uvSize + uvStride * c; 3094 * vRowIndex = ySize + uvStride * c; 3095 * size = ySize + uvSize * 2; 3096 * } 3097 *</pre> 3098 * 3099 * @param pixel_format the desired preview picture format, defined by 3100 * one of the {@link android.graphics.ImageFormat} constants. (E.g., 3101 * <var>ImageFormat.NV21</var> (default), or 3102 * <var>ImageFormat.YV12</var>) 3103 * 3104 * @see android.graphics.ImageFormat 3105 * @see android.hardware.Camera.Parameters#getSupportedPreviewFormats 3106 */ 3107 public void setPreviewFormat(int pixel_format) { 3108 String s = cameraFormatForPixelFormat(pixel_format); 3109 if (s == null) { 3110 throw new IllegalArgumentException( 3111 "Invalid pixel_format=" + pixel_format); 3112 } 3113 3114 set(KEY_PREVIEW_FORMAT, s); 3115 } 3116 3117 /** 3118 * Returns the image format for preview frames got from 3119 * {@link PreviewCallback}. 3120 * 3121 * @return the preview format. 3122 * @see android.graphics.ImageFormat 3123 * @see #setPreviewFormat 3124 */ 3125 public int getPreviewFormat() { 3126 return pixelFormatForCameraFormat(get(KEY_PREVIEW_FORMAT)); 3127 } 3128 3129 /** 3130 * Gets the supported preview formats. {@link android.graphics.ImageFormat#NV21} 3131 * is always supported. {@link android.graphics.ImageFormat#YV12} 3132 * is always supported since API level 12. 3133 * 3134 * @return a list of supported preview formats. This method will always 3135 * return a list with at least one element. 3136 * @see android.graphics.ImageFormat 3137 * @see #setPreviewFormat 3138 */ 3139 public List<Integer> getSupportedPreviewFormats() { 3140 String str = get(KEY_PREVIEW_FORMAT + SUPPORTED_VALUES_SUFFIX); 3141 ArrayList<Integer> formats = new ArrayList<Integer>(); 3142 for (String s : split(str)) { 3143 int f = pixelFormatForCameraFormat(s); 3144 if (f == ImageFormat.UNKNOWN) continue; 3145 formats.add(f); 3146 } 3147 return formats; 3148 } 3149 3150 /** 3151 * <p>Sets the dimensions for pictures.</p> 3152 * 3153 * <p>Applications need to consider the display orientation. See {@link 3154 * #setPreviewSize(int,int)} for reference.</p> 3155 * 3156 * @param width the width for pictures, in pixels 3157 * @param height the height for pictures, in pixels 3158 * @see #setPreviewSize(int,int) 3159 * 3160 */ 3161 public void setPictureSize(int width, int height) { 3162 String v = Integer.toString(width) + "x" + Integer.toString(height); 3163 set(KEY_PICTURE_SIZE, v); 3164 } 3165 3166 /** 3167 * Returns the dimension setting for pictures. 3168 * 3169 * @return a Size object with the height and width setting 3170 * for pictures 3171 */ 3172 public Size getPictureSize() { 3173 String pair = get(KEY_PICTURE_SIZE); 3174 return strToSize(pair); 3175 } 3176 3177 /** 3178 * Gets the supported picture sizes. 3179 * 3180 * @return a list of supported picture sizes. This method will always 3181 * return a list with at least one element. 3182 */ 3183 public List<Size> getSupportedPictureSizes() { 3184 String str = get(KEY_PICTURE_SIZE + SUPPORTED_VALUES_SUFFIX); 3185 return splitSize(str); 3186 } 3187 3188 /** 3189 * Sets the image format for pictures. 3190 * 3191 * @param pixel_format the desired picture format 3192 * (<var>ImageFormat.NV21</var>, 3193 * <var>ImageFormat.RGB_565</var>, or 3194 * <var>ImageFormat.JPEG</var>) 3195 * @see android.graphics.ImageFormat 3196 */ 3197 public void setPictureFormat(int pixel_format) { 3198 String s = cameraFormatForPixelFormat(pixel_format); 3199 if (s == null) { 3200 throw new IllegalArgumentException( 3201 "Invalid pixel_format=" + pixel_format); 3202 } 3203 3204 set(KEY_PICTURE_FORMAT, s); 3205 } 3206 3207 /** 3208 * Returns the image format for pictures. 3209 * 3210 * @return the picture format 3211 * @see android.graphics.ImageFormat 3212 */ 3213 public int getPictureFormat() { 3214 return pixelFormatForCameraFormat(get(KEY_PICTURE_FORMAT)); 3215 } 3216 3217 /** 3218 * Gets the supported picture formats. 3219 * 3220 * @return supported picture formats. This method will always return a 3221 * list with at least one element. 3222 * @see android.graphics.ImageFormat 3223 */ 3224 public List<Integer> getSupportedPictureFormats() { 3225 String str = get(KEY_PICTURE_FORMAT + SUPPORTED_VALUES_SUFFIX); 3226 ArrayList<Integer> formats = new ArrayList<Integer>(); 3227 for (String s : split(str)) { 3228 int f = pixelFormatForCameraFormat(s); 3229 if (f == ImageFormat.UNKNOWN) continue; 3230 formats.add(f); 3231 } 3232 return formats; 3233 } 3234 3235 private String cameraFormatForPixelFormat(int pixel_format) { 3236 switch(pixel_format) { 3237 case ImageFormat.NV16: return PIXEL_FORMAT_YUV422SP; 3238 case ImageFormat.NV21: return PIXEL_FORMAT_YUV420SP; 3239 case ImageFormat.YUY2: return PIXEL_FORMAT_YUV422I; 3240 case ImageFormat.YV12: return PIXEL_FORMAT_YUV420P; 3241 case ImageFormat.RGB_565: return PIXEL_FORMAT_RGB565; 3242 case ImageFormat.JPEG: return PIXEL_FORMAT_JPEG; 3243 default: return null; 3244 } 3245 } 3246 3247 private int pixelFormatForCameraFormat(String format) { 3248 if (format == null) 3249 return ImageFormat.UNKNOWN; 3250 3251 if (format.equals(PIXEL_FORMAT_YUV422SP)) 3252 return ImageFormat.NV16; 3253 3254 if (format.equals(PIXEL_FORMAT_YUV420SP)) 3255 return ImageFormat.NV21; 3256 3257 if (format.equals(PIXEL_FORMAT_YUV422I)) 3258 return ImageFormat.YUY2; 3259 3260 if (format.equals(PIXEL_FORMAT_YUV420P)) 3261 return ImageFormat.YV12; 3262 3263 if (format.equals(PIXEL_FORMAT_RGB565)) 3264 return ImageFormat.RGB_565; 3265 3266 if (format.equals(PIXEL_FORMAT_JPEG)) 3267 return ImageFormat.JPEG; 3268 3269 return ImageFormat.UNKNOWN; 3270 } 3271 3272 /** 3273 * Sets the clockwise rotation angle in degrees relative to the 3274 * orientation of the camera. This affects the pictures returned from 3275 * JPEG {@link PictureCallback}. The camera driver may set orientation 3276 * in the EXIF header without rotating the picture. Or the driver may 3277 * rotate the picture and the EXIF thumbnail. If the Jpeg picture is 3278 * rotated, the orientation in the EXIF header will be missing or 1 (row 3279 * #0 is top and column #0 is left side). 3280 * 3281 * <p> 3282 * If applications want to rotate the picture to match the orientation 3283 * of what users see, apps should use 3284 * {@link android.view.OrientationEventListener} and 3285 * {@link android.hardware.Camera.CameraInfo}. The value from 3286 * OrientationEventListener is relative to the natural orientation of 3287 * the device. CameraInfo.orientation is the angle between camera 3288 * orientation and natural device orientation. The sum of the two is the 3289 * rotation angle for back-facing camera. The difference of the two is 3290 * the rotation angle for front-facing camera. Note that the JPEG 3291 * pictures of front-facing cameras are not mirrored as in preview 3292 * display. 3293 * 3294 * <p> 3295 * For example, suppose the natural orientation of the device is 3296 * portrait. The device is rotated 270 degrees clockwise, so the device 3297 * orientation is 270. Suppose a back-facing camera sensor is mounted in 3298 * landscape and the top side of the camera sensor is aligned with the 3299 * right edge of the display in natural orientation. So the camera 3300 * orientation is 90. The rotation should be set to 0 (270 + 90). 3301 * 3302 * <p>The reference code is as follows. 3303 * 3304 * <pre> 3305 * public void onOrientationChanged(int orientation) { 3306 * if (orientation == ORIENTATION_UNKNOWN) return; 3307 * android.hardware.Camera.CameraInfo info = 3308 * new android.hardware.Camera.CameraInfo(); 3309 * android.hardware.Camera.getCameraInfo(cameraId, info); 3310 * orientation = (orientation + 45) / 90 * 90; 3311 * int rotation = 0; 3312 * if (info.facing == CameraInfo.CAMERA_FACING_FRONT) { 3313 * rotation = (info.orientation - orientation + 360) % 360; 3314 * } else { // back-facing camera 3315 * rotation = (info.orientation + orientation) % 360; 3316 * } 3317 * mParameters.setRotation(rotation); 3318 * } 3319 * </pre> 3320 * 3321 * @param rotation The rotation angle in degrees relative to the 3322 * orientation of the camera. Rotation can only be 0, 3323 * 90, 180 or 270. 3324 * @throws IllegalArgumentException if rotation value is invalid. 3325 * @see android.view.OrientationEventListener 3326 * @see #getCameraInfo(int, CameraInfo) 3327 */ 3328 public void setRotation(int rotation) { 3329 if (rotation == 0 || rotation == 90 || rotation == 180 3330 || rotation == 270) { 3331 set(KEY_ROTATION, Integer.toString(rotation)); 3332 } else { 3333 throw new IllegalArgumentException( 3334 "Invalid rotation=" + rotation); 3335 } 3336 } 3337 3338 /** 3339 * Sets GPS latitude coordinate. This will be stored in JPEG EXIF 3340 * header. 3341 * 3342 * @param latitude GPS latitude coordinate. 3343 */ 3344 public void setGpsLatitude(double latitude) { 3345 set(KEY_GPS_LATITUDE, Double.toString(latitude)); 3346 } 3347 3348 /** 3349 * Sets GPS longitude coordinate. This will be stored in JPEG EXIF 3350 * header. 3351 * 3352 * @param longitude GPS longitude coordinate. 3353 */ 3354 public void setGpsLongitude(double longitude) { 3355 set(KEY_GPS_LONGITUDE, Double.toString(longitude)); 3356 } 3357 3358 /** 3359 * Sets GPS altitude. This will be stored in JPEG EXIF header. 3360 * 3361 * @param altitude GPS altitude in meters. 3362 */ 3363 public void setGpsAltitude(double altitude) { 3364 set(KEY_GPS_ALTITUDE, Double.toString(altitude)); 3365 } 3366 3367 /** 3368 * Sets GPS timestamp. This will be stored in JPEG EXIF header. 3369 * 3370 * @param timestamp GPS timestamp (UTC in seconds since January 1, 3371 * 1970). 3372 */ 3373 public void setGpsTimestamp(long timestamp) { 3374 set(KEY_GPS_TIMESTAMP, Long.toString(timestamp)); 3375 } 3376 3377 /** 3378 * Sets GPS processing method. The method will be stored in a UTF-8 string up to 31 bytes 3379 * long, in the JPEG EXIF header. 3380 * 3381 * @param processing_method The processing method to get this location. 3382 */ 3383 public void setGpsProcessingMethod(String processing_method) { 3384 set(KEY_GPS_PROCESSING_METHOD, processing_method); 3385 } 3386 3387 /** 3388 * Removes GPS latitude, longitude, altitude, and timestamp from the 3389 * parameters. 3390 */ 3391 public void removeGpsData() { 3392 remove(KEY_GPS_LATITUDE); 3393 remove(KEY_GPS_LONGITUDE); 3394 remove(KEY_GPS_ALTITUDE); 3395 remove(KEY_GPS_TIMESTAMP); 3396 remove(KEY_GPS_PROCESSING_METHOD); 3397 } 3398 3399 /** 3400 * Gets the current white balance setting. 3401 * 3402 * @return current white balance. null if white balance setting is not 3403 * supported. 3404 * @see #WHITE_BALANCE_AUTO 3405 * @see #WHITE_BALANCE_INCANDESCENT 3406 * @see #WHITE_BALANCE_FLUORESCENT 3407 * @see #WHITE_BALANCE_WARM_FLUORESCENT 3408 * @see #WHITE_BALANCE_DAYLIGHT 3409 * @see #WHITE_BALANCE_CLOUDY_DAYLIGHT 3410 * @see #WHITE_BALANCE_TWILIGHT 3411 * @see #WHITE_BALANCE_SHADE 3412 * 3413 */ 3414 public String getWhiteBalance() { 3415 return get(KEY_WHITE_BALANCE); 3416 } 3417 3418 /** 3419 * Sets the white balance. Changing the setting will release the 3420 * auto-white balance lock. It is recommended not to change white 3421 * balance and AWB lock at the same time. 3422 * 3423 * @param value new white balance. 3424 * @see #getWhiteBalance() 3425 * @see #setAutoWhiteBalanceLock(boolean) 3426 */ 3427 public void setWhiteBalance(String value) { 3428 String oldValue = get(KEY_WHITE_BALANCE); 3429 if (same(value, oldValue)) return; 3430 set(KEY_WHITE_BALANCE, value); 3431 set(KEY_AUTO_WHITEBALANCE_LOCK, FALSE); 3432 } 3433 3434 /** 3435 * Gets the supported white balance. 3436 * 3437 * @return a list of supported white balance. null if white balance 3438 * setting is not supported. 3439 * @see #getWhiteBalance() 3440 */ 3441 public List<String> getSupportedWhiteBalance() { 3442 String str = get(KEY_WHITE_BALANCE + SUPPORTED_VALUES_SUFFIX); 3443 return split(str); 3444 } 3445 3446 /** 3447 * Gets the current color effect setting. 3448 * 3449 * @return current color effect. null if color effect 3450 * setting is not supported. 3451 * @see #EFFECT_NONE 3452 * @see #EFFECT_MONO 3453 * @see #EFFECT_NEGATIVE 3454 * @see #EFFECT_SOLARIZE 3455 * @see #EFFECT_SEPIA 3456 * @see #EFFECT_POSTERIZE 3457 * @see #EFFECT_WHITEBOARD 3458 * @see #EFFECT_BLACKBOARD 3459 * @see #EFFECT_AQUA 3460 */ 3461 public String getColorEffect() { 3462 return get(KEY_EFFECT); 3463 } 3464 3465 /** 3466 * Sets the current color effect setting. 3467 * 3468 * @param value new color effect. 3469 * @see #getColorEffect() 3470 */ 3471 public void setColorEffect(String value) { 3472 set(KEY_EFFECT, value); 3473 } 3474 3475 /** 3476 * Gets the supported color effects. 3477 * 3478 * @return a list of supported color effects. null if color effect 3479 * setting is not supported. 3480 * @see #getColorEffect() 3481 */ 3482 public List<String> getSupportedColorEffects() { 3483 String str = get(KEY_EFFECT + SUPPORTED_VALUES_SUFFIX); 3484 return split(str); 3485 } 3486 3487 3488 /** 3489 * Gets the current antibanding setting. 3490 * 3491 * @return current antibanding. null if antibanding setting is not 3492 * supported. 3493 * @see #ANTIBANDING_AUTO 3494 * @see #ANTIBANDING_50HZ 3495 * @see #ANTIBANDING_60HZ 3496 * @see #ANTIBANDING_OFF 3497 */ 3498 public String getAntibanding() { 3499 return get(KEY_ANTIBANDING); 3500 } 3501 3502 /** 3503 * Sets the antibanding. 3504 * 3505 * @param antibanding new antibanding value. 3506 * @see #getAntibanding() 3507 */ 3508 public void setAntibanding(String antibanding) { 3509 set(KEY_ANTIBANDING, antibanding); 3510 } 3511 3512 /** 3513 * Gets the supported antibanding values. 3514 * 3515 * @return a list of supported antibanding values. null if antibanding 3516 * setting is not supported. 3517 * @see #getAntibanding() 3518 */ 3519 public List<String> getSupportedAntibanding() { 3520 String str = get(KEY_ANTIBANDING + SUPPORTED_VALUES_SUFFIX); 3521 return split(str); 3522 } 3523 3524 /** 3525 * Gets the current scene mode setting. 3526 * 3527 * @return one of SCENE_MODE_XXX string constant. null if scene mode 3528 * setting is not supported. 3529 * @see #SCENE_MODE_AUTO 3530 * @see #SCENE_MODE_ACTION 3531 * @see #SCENE_MODE_PORTRAIT 3532 * @see #SCENE_MODE_LANDSCAPE 3533 * @see #SCENE_MODE_NIGHT 3534 * @see #SCENE_MODE_NIGHT_PORTRAIT 3535 * @see #SCENE_MODE_THEATRE 3536 * @see #SCENE_MODE_BEACH 3537 * @see #SCENE_MODE_SNOW 3538 * @see #SCENE_MODE_SUNSET 3539 * @see #SCENE_MODE_STEADYPHOTO 3540 * @see #SCENE_MODE_FIREWORKS 3541 * @see #SCENE_MODE_SPORTS 3542 * @see #SCENE_MODE_PARTY 3543 * @see #SCENE_MODE_CANDLELIGHT 3544 * @see #SCENE_MODE_BARCODE 3545 */ 3546 public String getSceneMode() { 3547 return get(KEY_SCENE_MODE); 3548 } 3549 3550 /** 3551 * Sets the scene mode. Changing scene mode may override other 3552 * parameters (such as flash mode, focus mode, white balance). For 3553 * example, suppose originally flash mode is on and supported flash 3554 * modes are on/off. In night scene mode, both flash mode and supported 3555 * flash mode may be changed to off. After setting scene mode, 3556 * applications should call getParameters to know if some parameters are 3557 * changed. 3558 * 3559 * @param value scene mode. 3560 * @see #getSceneMode() 3561 */ 3562 public void setSceneMode(String value) { 3563 set(KEY_SCENE_MODE, value); 3564 } 3565 3566 /** 3567 * Gets the supported scene modes. 3568 * 3569 * @return a list of supported scene modes. null if scene mode setting 3570 * is not supported. 3571 * @see #getSceneMode() 3572 */ 3573 public List<String> getSupportedSceneModes() { 3574 String str = get(KEY_SCENE_MODE + SUPPORTED_VALUES_SUFFIX); 3575 return split(str); 3576 } 3577 3578 /** 3579 * Gets the current flash mode setting. 3580 * 3581 * @return current flash mode. null if flash mode setting is not 3582 * supported. 3583 * @see #FLASH_MODE_OFF 3584 * @see #FLASH_MODE_AUTO 3585 * @see #FLASH_MODE_ON 3586 * @see #FLASH_MODE_RED_EYE 3587 * @see #FLASH_MODE_TORCH 3588 */ 3589 public String getFlashMode() { 3590 return get(KEY_FLASH_MODE); 3591 } 3592 3593 /** 3594 * Sets the flash mode. 3595 * 3596 * @param value flash mode. 3597 * @see #getFlashMode() 3598 */ 3599 public void setFlashMode(String value) { 3600 set(KEY_FLASH_MODE, value); 3601 } 3602 3603 /** 3604 * Gets the supported flash modes. 3605 * 3606 * @return a list of supported flash modes. null if flash mode setting 3607 * is not supported. 3608 * @see #getFlashMode() 3609 */ 3610 public List<String> getSupportedFlashModes() { 3611 String str = get(KEY_FLASH_MODE + SUPPORTED_VALUES_SUFFIX); 3612 return split(str); 3613 } 3614 3615 /** 3616 * Gets the current focus mode setting. 3617 * 3618 * @return current focus mode. This method will always return a non-null 3619 * value. Applications should call {@link 3620 * #autoFocus(AutoFocusCallback)} to start the focus if focus 3621 * mode is FOCUS_MODE_AUTO or FOCUS_MODE_MACRO. 3622 * @see #FOCUS_MODE_AUTO 3623 * @see #FOCUS_MODE_INFINITY 3624 * @see #FOCUS_MODE_MACRO 3625 * @see #FOCUS_MODE_FIXED 3626 * @see #FOCUS_MODE_EDOF 3627 * @see #FOCUS_MODE_CONTINUOUS_VIDEO 3628 */ 3629 public String getFocusMode() { 3630 return get(KEY_FOCUS_MODE); 3631 } 3632 3633 /** 3634 * Sets the focus mode. 3635 * 3636 * @param value focus mode. 3637 * @see #getFocusMode() 3638 */ 3639 public void setFocusMode(String value) { 3640 set(KEY_FOCUS_MODE, value); 3641 } 3642 3643 /** 3644 * Gets the supported focus modes. 3645 * 3646 * @return a list of supported focus modes. This method will always 3647 * return a list with at least one element. 3648 * @see #getFocusMode() 3649 */ 3650 public List<String> getSupportedFocusModes() { 3651 String str = get(KEY_FOCUS_MODE + SUPPORTED_VALUES_SUFFIX); 3652 return split(str); 3653 } 3654 3655 /** 3656 * Gets the focal length (in millimeter) of the camera. 3657 * 3658 * @return the focal length. Returns -1.0 when the device 3659 * doesn't report focal length information. 3660 */ 3661 public float getFocalLength() { 3662 return Float.parseFloat(get(KEY_FOCAL_LENGTH)); 3663 } 3664 3665 /** 3666 * Gets the horizontal angle of view in degrees. 3667 * 3668 * @return horizontal angle of view. Returns -1.0 when the device 3669 * doesn't report view angle information. 3670 */ 3671 public float getHorizontalViewAngle() { 3672 return Float.parseFloat(get(KEY_HORIZONTAL_VIEW_ANGLE)); 3673 } 3674 3675 /** 3676 * Gets the vertical angle of view in degrees. 3677 * 3678 * @return vertical angle of view. Returns -1.0 when the device 3679 * doesn't report view angle information. 3680 */ 3681 public float getVerticalViewAngle() { 3682 return Float.parseFloat(get(KEY_VERTICAL_VIEW_ANGLE)); 3683 } 3684 3685 /** 3686 * Gets the current exposure compensation index. 3687 * 3688 * @return current exposure compensation index. The range is {@link 3689 * #getMinExposureCompensation} to {@link 3690 * #getMaxExposureCompensation}. 0 means exposure is not 3691 * adjusted. 3692 */ 3693 public int getExposureCompensation() { 3694 return getInt(KEY_EXPOSURE_COMPENSATION, 0); 3695 } 3696 3697 /** 3698 * Sets the exposure compensation index. 3699 * 3700 * @param value exposure compensation index. The valid value range is 3701 * from {@link #getMinExposureCompensation} (inclusive) to {@link 3702 * #getMaxExposureCompensation} (inclusive). 0 means exposure is 3703 * not adjusted. Application should call 3704 * getMinExposureCompensation and getMaxExposureCompensation to 3705 * know if exposure compensation is supported. 3706 */ 3707 public void setExposureCompensation(int value) { 3708 set(KEY_EXPOSURE_COMPENSATION, value); 3709 } 3710 3711 /** 3712 * Gets the maximum exposure compensation index. 3713 * 3714 * @return maximum exposure compensation index (>=0). If both this 3715 * method and {@link #getMinExposureCompensation} return 0, 3716 * exposure compensation is not supported. 3717 */ 3718 public int getMaxExposureCompensation() { 3719 return getInt(KEY_MAX_EXPOSURE_COMPENSATION, 0); 3720 } 3721 3722 /** 3723 * Gets the minimum exposure compensation index. 3724 * 3725 * @return minimum exposure compensation index (<=0). If both this 3726 * method and {@link #getMaxExposureCompensation} return 0, 3727 * exposure compensation is not supported. 3728 */ 3729 public int getMinExposureCompensation() { 3730 return getInt(KEY_MIN_EXPOSURE_COMPENSATION, 0); 3731 } 3732 3733 /** 3734 * Gets the exposure compensation step. 3735 * 3736 * @return exposure compensation step. Applications can get EV by 3737 * multiplying the exposure compensation index and step. Ex: if 3738 * exposure compensation index is -6 and step is 0.333333333, EV 3739 * is -2. 3740 */ 3741 public float getExposureCompensationStep() { 3742 return getFloat(KEY_EXPOSURE_COMPENSATION_STEP, 0); 3743 } 3744 3745 /** 3746 * <p>Sets the auto-exposure lock state. Applications should check 3747 * {@link #isAutoExposureLockSupported} before using this method.</p> 3748 * 3749 * <p>If set to true, the camera auto-exposure routine will immediately 3750 * pause until the lock is set to false. Exposure compensation settings 3751 * changes will still take effect while auto-exposure is locked.</p> 3752 * 3753 * <p>If auto-exposure is already locked, setting this to true again has 3754 * no effect (the driver will not recalculate exposure values).</p> 3755 * 3756 * <p>Stopping preview with {@link #stopPreview()}, or triggering still 3757 * image capture with {@link #takePicture(Camera.ShutterCallback, 3758 * Camera.PictureCallback, Camera.PictureCallback)}, will not change the 3759 * lock.</p> 3760 * 3761 * <p>Exposure compensation, auto-exposure lock, and auto-white balance 3762 * lock can be used to capture an exposure-bracketed burst of images, 3763 * for example.</p> 3764 * 3765 * <p>Auto-exposure state, including the lock state, will not be 3766 * maintained after camera {@link #release()} is called. Locking 3767 * auto-exposure after {@link #open()} but before the first call to 3768 * {@link #startPreview()} will not allow the auto-exposure routine to 3769 * run at all, and may result in severely over- or under-exposed 3770 * images.</p> 3771 * 3772 * @param toggle new state of the auto-exposure lock. True means that 3773 * auto-exposure is locked, false means that the auto-exposure 3774 * routine is free to run normally. 3775 * 3776 * @see #getAutoExposureLock() 3777 */ 3778 public void setAutoExposureLock(boolean toggle) { 3779 set(KEY_AUTO_EXPOSURE_LOCK, toggle ? TRUE : FALSE); 3780 } 3781 3782 /** 3783 * Gets the state of the auto-exposure lock. Applications should check 3784 * {@link #isAutoExposureLockSupported} before using this method. See 3785 * {@link #setAutoExposureLock} for details about the lock. 3786 * 3787 * @return State of the auto-exposure lock. Returns true if 3788 * auto-exposure is currently locked, and false otherwise. 3789 * 3790 * @see #setAutoExposureLock(boolean) 3791 * 3792 */ 3793 public boolean getAutoExposureLock() { 3794 String str = get(KEY_AUTO_EXPOSURE_LOCK); 3795 return TRUE.equals(str); 3796 } 3797 3798 /** 3799 * Returns true if auto-exposure locking is supported. Applications 3800 * should call this before trying to lock auto-exposure. See 3801 * {@link #setAutoExposureLock} for details about the lock. 3802 * 3803 * @return true if auto-exposure lock is supported. 3804 * @see #setAutoExposureLock(boolean) 3805 * 3806 */ 3807 public boolean isAutoExposureLockSupported() { 3808 String str = get(KEY_AUTO_EXPOSURE_LOCK_SUPPORTED); 3809 return TRUE.equals(str); 3810 } 3811 3812 /** 3813 * <p>Sets the auto-white balance lock state. Applications should check 3814 * {@link #isAutoWhiteBalanceLockSupported} before using this 3815 * method.</p> 3816 * 3817 * <p>If set to true, the camera auto-white balance routine will 3818 * immediately pause until the lock is set to false.</p> 3819 * 3820 * <p>If auto-white balance is already locked, setting this to true 3821 * again has no effect (the driver will not recalculate white balance 3822 * values).</p> 3823 * 3824 * <p>Stopping preview with {@link #stopPreview()}, or triggering still 3825 * image capture with {@link #takePicture(Camera.ShutterCallback, 3826 * Camera.PictureCallback, Camera.PictureCallback)}, will not change the 3827 * the lock.</p> 3828 * 3829 * <p> Changing the white balance mode with {@link #setWhiteBalance} 3830 * will release the auto-white balance lock if it is set.</p> 3831 * 3832 * <p>Exposure compensation, AE lock, and AWB lock can be used to 3833 * capture an exposure-bracketed burst of images, for example. 3834 * Auto-white balance state, including the lock state, will not be 3835 * maintained after camera {@link #release()} is called. Locking 3836 * auto-white balance after {@link #open()} but before the first call to 3837 * {@link #startPreview()} will not allow the auto-white balance routine 3838 * to run at all, and may result in severely incorrect color in captured 3839 * images.</p> 3840 * 3841 * @param toggle new state of the auto-white balance lock. True means 3842 * that auto-white balance is locked, false means that the 3843 * auto-white balance routine is free to run normally. 3844 * 3845 * @see #getAutoWhiteBalanceLock() 3846 * @see #setWhiteBalance(String) 3847 */ 3848 public void setAutoWhiteBalanceLock(boolean toggle) { 3849 set(KEY_AUTO_WHITEBALANCE_LOCK, toggle ? TRUE : FALSE); 3850 } 3851 3852 /** 3853 * Gets the state of the auto-white balance lock. Applications should 3854 * check {@link #isAutoWhiteBalanceLockSupported} before using this 3855 * method. See {@link #setAutoWhiteBalanceLock} for details about the 3856 * lock. 3857 * 3858 * @return State of the auto-white balance lock. Returns true if 3859 * auto-white balance is currently locked, and false 3860 * otherwise. 3861 * 3862 * @see #setAutoWhiteBalanceLock(boolean) 3863 * 3864 */ 3865 public boolean getAutoWhiteBalanceLock() { 3866 String str = get(KEY_AUTO_WHITEBALANCE_LOCK); 3867 return TRUE.equals(str); 3868 } 3869 3870 /** 3871 * Returns true if auto-white balance locking is supported. Applications 3872 * should call this before trying to lock auto-white balance. See 3873 * {@link #setAutoWhiteBalanceLock} for details about the lock. 3874 * 3875 * @return true if auto-white balance lock is supported. 3876 * @see #setAutoWhiteBalanceLock(boolean) 3877 * 3878 */ 3879 public boolean isAutoWhiteBalanceLockSupported() { 3880 String str = get(KEY_AUTO_WHITEBALANCE_LOCK_SUPPORTED); 3881 return TRUE.equals(str); 3882 } 3883 3884 /** 3885 * Gets current zoom value. This also works when smooth zoom is in 3886 * progress. Applications should check {@link #isZoomSupported} before 3887 * using this method. 3888 * 3889 * @return the current zoom value. The range is 0 to {@link 3890 * #getMaxZoom}. 0 means the camera is not zoomed. 3891 */ 3892 public int getZoom() { 3893 return getInt(KEY_ZOOM, 0); 3894 } 3895 3896 /** 3897 * Sets current zoom value. If the camera is zoomed (value > 0), the 3898 * actual picture size may be smaller than picture size setting. 3899 * Applications can check the actual picture size after picture is 3900 * returned from {@link PictureCallback}. The preview size remains the 3901 * same in zoom. Applications should check {@link #isZoomSupported} 3902 * before using this method. 3903 * 3904 * @param value zoom value. The valid range is 0 to {@link #getMaxZoom}. 3905 */ 3906 public void setZoom(int value) { 3907 set(KEY_ZOOM, value); 3908 } 3909 3910 /** 3911 * Returns true if zoom is supported. Applications should call this 3912 * before using other zoom methods. 3913 * 3914 * @return true if zoom is supported. 3915 */ 3916 public boolean isZoomSupported() { 3917 String str = get(KEY_ZOOM_SUPPORTED); 3918 return TRUE.equals(str); 3919 } 3920 3921 /** 3922 * Gets the maximum zoom value allowed for snapshot. This is the maximum 3923 * value that applications can set to {@link #setZoom(int)}. 3924 * Applications should call {@link #isZoomSupported} before using this 3925 * method. This value may change in different preview size. Applications 3926 * should call this again after setting preview size. 3927 * 3928 * @return the maximum zoom value supported by the camera. 3929 */ 3930 public int getMaxZoom() { 3931 return getInt(KEY_MAX_ZOOM, 0); 3932 } 3933 3934 /** 3935 * Gets the zoom ratios of all zoom values. Applications should check 3936 * {@link #isZoomSupported} before using this method. 3937 * 3938 * @return the zoom ratios in 1/100 increments. Ex: a zoom of 3.2x is 3939 * returned as 320. The number of elements is {@link 3940 * #getMaxZoom} + 1. The list is sorted from small to large. The 3941 * first element is always 100. The last element is the zoom 3942 * ratio of the maximum zoom value. 3943 */ 3944 public List<Integer> getZoomRatios() { 3945 return splitInt(get(KEY_ZOOM_RATIOS)); 3946 } 3947 3948 /** 3949 * Returns true if smooth zoom is supported. Applications should call 3950 * this before using other smooth zoom methods. 3951 * 3952 * @return true if smooth zoom is supported. 3953 */ 3954 public boolean isSmoothZoomSupported() { 3955 String str = get(KEY_SMOOTH_ZOOM_SUPPORTED); 3956 return TRUE.equals(str); 3957 } 3958 3959 /** 3960 * <p>Gets the distances from the camera to where an object appears to be 3961 * in focus. The object is sharpest at the optimal focus distance. The 3962 * depth of field is the far focus distance minus near focus distance.</p> 3963 * 3964 * <p>Focus distances may change after calling {@link 3965 * #autoFocus(AutoFocusCallback)}, {@link #cancelAutoFocus}, or {@link 3966 * #startPreview()}. Applications can call {@link #getParameters()} 3967 * and this method anytime to get the latest focus distances. If the 3968 * focus mode is FOCUS_MODE_CONTINUOUS_VIDEO, focus distances may change 3969 * from time to time.</p> 3970 * 3971 * <p>This method is intended to estimate the distance between the camera 3972 * and the subject. After autofocus, the subject distance may be within 3973 * near and far focus distance. However, the precision depends on the 3974 * camera hardware, autofocus algorithm, the focus area, and the scene. 3975 * The error can be large and it should be only used as a reference.</p> 3976 * 3977 * <p>Far focus distance >= optimal focus distance >= near focus distance. 3978 * If the focus distance is infinity, the value will be 3979 * {@code Float.POSITIVE_INFINITY}.</p> 3980 * 3981 * @param output focus distances in meters. output must be a float 3982 * array with three elements. Near focus distance, optimal focus 3983 * distance, and far focus distance will be filled in the array. 3984 * @see #FOCUS_DISTANCE_NEAR_INDEX 3985 * @see #FOCUS_DISTANCE_OPTIMAL_INDEX 3986 * @see #FOCUS_DISTANCE_FAR_INDEX 3987 */ 3988 public void getFocusDistances(float[] output) { 3989 if (output == null || output.length != 3) { 3990 throw new IllegalArgumentException( 3991 "output must be a float array with three elements."); 3992 } 3993 splitFloat(get(KEY_FOCUS_DISTANCES), output); 3994 } 3995 3996 /** 3997 * Gets the maximum number of focus areas supported. This is the maximum 3998 * length of the list in {@link #setFocusAreas(List)} and 3999 * {@link #getFocusAreas()}. 4000 * 4001 * @return the maximum number of focus areas supported by the camera. 4002 * @see #getFocusAreas() 4003 */ 4004 public int getMaxNumFocusAreas() { 4005 return getInt(KEY_MAX_NUM_FOCUS_AREAS, 0); 4006 } 4007 4008 /** 4009 * <p>Gets the current focus areas. Camera driver uses the areas to decide 4010 * focus.</p> 4011 * 4012 * <p>Before using this API or {@link #setFocusAreas(List)}, apps should 4013 * call {@link #getMaxNumFocusAreas()} to know the maximum number of 4014 * focus areas first. If the value is 0, focus area is not supported.</p> 4015 * 4016 * <p>Each focus area is a rectangle with specified weight. The direction 4017 * is relative to the sensor orientation, that is, what the sensor sees. 4018 * The direction is not affected by the rotation or mirroring of 4019 * {@link #setDisplayOrientation(int)}. Coordinates of the rectangle 4020 * range from -1000 to 1000. (-1000, -1000) is the upper left point. 4021 * (1000, 1000) is the lower right point. The width and height of focus 4022 * areas cannot be 0 or negative.</p> 4023 * 4024 * <p>The weight must range from 1 to 1000. The weight should be 4025 * interpreted as a per-pixel weight - all pixels in the area have the 4026 * specified weight. This means a small area with the same weight as a 4027 * larger area will have less influence on the focusing than the larger 4028 * area. Focus areas can partially overlap and the driver will add the 4029 * weights in the overlap region.</p> 4030 * 4031 * <p>A special case of a {@code null} focus area list means the driver is 4032 * free to select focus targets as it wants. For example, the driver may 4033 * use more signals to select focus areas and change them 4034 * dynamically. Apps can set the focus area list to {@code null} if they 4035 * want the driver to completely control focusing.</p> 4036 * 4037 * <p>Focus areas are relative to the current field of view 4038 * ({@link #getZoom()}). No matter what the zoom level is, (-1000,-1000) 4039 * represents the top of the currently visible camera frame. The focus 4040 * area cannot be set to be outside the current field of view, even 4041 * when using zoom.</p> 4042 * 4043 * <p>Focus area only has effect if the current focus mode is 4044 * {@link #FOCUS_MODE_AUTO}, {@link #FOCUS_MODE_MACRO}, 4045 * {@link #FOCUS_MODE_CONTINUOUS_VIDEO}, or 4046 * {@link #FOCUS_MODE_CONTINUOUS_PICTURE}.</p> 4047 * 4048 * @return a list of current focus areas 4049 */ 4050 public List<Area> getFocusAreas() { 4051 return splitArea(get(KEY_FOCUS_AREAS)); 4052 } 4053 4054 /** 4055 * Sets focus areas. See {@link #getFocusAreas()} for documentation. 4056 * 4057 * @param focusAreas the focus areas 4058 * @see #getFocusAreas() 4059 */ 4060 public void setFocusAreas(List<Area> focusAreas) { 4061 set(KEY_FOCUS_AREAS, focusAreas); 4062 } 4063 4064 /** 4065 * Gets the maximum number of metering areas supported. This is the 4066 * maximum length of the list in {@link #setMeteringAreas(List)} and 4067 * {@link #getMeteringAreas()}. 4068 * 4069 * @return the maximum number of metering areas supported by the camera. 4070 * @see #getMeteringAreas() 4071 */ 4072 public int getMaxNumMeteringAreas() { 4073 return getInt(KEY_MAX_NUM_METERING_AREAS, 0); 4074 } 4075 4076 /** 4077 * <p>Gets the current metering areas. Camera driver uses these areas to 4078 * decide exposure.</p> 4079 * 4080 * <p>Before using this API or {@link #setMeteringAreas(List)}, apps should 4081 * call {@link #getMaxNumMeteringAreas()} to know the maximum number of 4082 * metering areas first. If the value is 0, metering area is not 4083 * supported.</p> 4084 * 4085 * <p>Each metering area is a rectangle with specified weight. The 4086 * direction is relative to the sensor orientation, that is, what the 4087 * sensor sees. The direction is not affected by the rotation or 4088 * mirroring of {@link #setDisplayOrientation(int)}. Coordinates of the 4089 * rectangle range from -1000 to 1000. (-1000, -1000) is the upper left 4090 * point. (1000, 1000) is the lower right point. The width and height of 4091 * metering areas cannot be 0 or negative.</p> 4092 * 4093 * <p>The weight must range from 1 to 1000, and represents a weight for 4094 * every pixel in the area. This means that a large metering area with 4095 * the same weight as a smaller area will have more effect in the 4096 * metering result. Metering areas can partially overlap and the driver 4097 * will add the weights in the overlap region.</p> 4098 * 4099 * <p>A special case of a {@code null} metering area list means the driver 4100 * is free to meter as it chooses. For example, the driver may use more 4101 * signals to select metering areas and change them dynamically. Apps 4102 * can set the metering area list to {@code null} if they want the 4103 * driver to completely control metering.</p> 4104 * 4105 * <p>Metering areas are relative to the current field of view 4106 * ({@link #getZoom()}). No matter what the zoom level is, (-1000,-1000) 4107 * represents the top of the currently visible camera frame. The 4108 * metering area cannot be set to be outside the current field of view, 4109 * even when using zoom.</p> 4110 * 4111 * <p>No matter what metering areas are, the final exposure are compensated 4112 * by {@link #setExposureCompensation(int)}.</p> 4113 * 4114 * @return a list of current metering areas 4115 */ 4116 public List<Area> getMeteringAreas() { 4117 return splitArea(get(KEY_METERING_AREAS)); 4118 } 4119 4120 /** 4121 * Sets metering areas. See {@link #getMeteringAreas()} for 4122 * documentation. 4123 * 4124 * @param meteringAreas the metering areas 4125 * @see #getMeteringAreas() 4126 */ 4127 public void setMeteringAreas(List<Area> meteringAreas) { 4128 set(KEY_METERING_AREAS, meteringAreas); 4129 } 4130 4131 /** 4132 * Gets the maximum number of detected faces supported. This is the 4133 * maximum length of the list returned from {@link FaceDetectionListener}. 4134 * If the return value is 0, face detection of the specified type is not 4135 * supported. 4136 * 4137 * @return the maximum number of detected face supported by the camera. 4138 * @see #startFaceDetection() 4139 */ 4140 public int getMaxNumDetectedFaces() { 4141 return getInt(KEY_MAX_NUM_DETECTED_FACES_HW, 0); 4142 } 4143 4144 /** 4145 * Sets recording mode hint. This tells the camera that the intent of 4146 * the application is to record videos {@link 4147 * android.media.MediaRecorder#start()}, not to take still pictures 4148 * {@link #takePicture(Camera.ShutterCallback, Camera.PictureCallback, 4149 * Camera.PictureCallback, Camera.PictureCallback)}. Using this hint can 4150 * allow MediaRecorder.start() to start faster or with fewer glitches on 4151 * output. This should be called before starting preview for the best 4152 * result, but can be changed while the preview is active. The default 4153 * value is false. 4154 * 4155 * The app can still call takePicture() when the hint is true or call 4156 * MediaRecorder.start() when the hint is false. But the performance may 4157 * be worse. 4158 * 4159 * @param hint true if the apps intend to record videos using 4160 * {@link android.media.MediaRecorder}. 4161 */ 4162 public void setRecordingHint(boolean hint) { 4163 set(KEY_RECORDING_HINT, hint ? TRUE : FALSE); 4164 } 4165 4166 /** 4167 * <p>Returns true if video snapshot is supported. That is, applications 4168 * can call {@link #takePicture(Camera.ShutterCallback, 4169 * Camera.PictureCallback, Camera.PictureCallback, 4170 * Camera.PictureCallback)} during recording. Applications do not need 4171 * to call {@link #startPreview()} after taking a picture. The preview 4172 * will be still active. Other than that, taking a picture during 4173 * recording is identical to taking a picture normally. All settings and 4174 * methods related to takePicture work identically. Ex: 4175 * {@link #getPictureSize()}, {@link #getSupportedPictureSizes()}, 4176 * {@link #setJpegQuality(int)}, {@link #setRotation(int)}, and etc. The 4177 * picture will have an EXIF header. {@link #FLASH_MODE_AUTO} and 4178 * {@link #FLASH_MODE_ON} also still work, but the video will record the 4179 * flash.</p> 4180 * 4181 * <p>Applications can set shutter callback as null to avoid the shutter 4182 * sound. It is also recommended to set raw picture and post view 4183 * callbacks to null to avoid the interrupt of preview display.</p> 4184 * 4185 * <p>Field-of-view of the recorded video may be different from that of the 4186 * captured pictures. The maximum size of a video snapshot may be 4187 * smaller than that for regular still captures. If the current picture 4188 * size is set higher than can be supported by video snapshot, the 4189 * picture will be captured at the maximum supported size instead.</p> 4190 * 4191 * @return true if video snapshot is supported. 4192 */ 4193 public boolean isVideoSnapshotSupported() { 4194 String str = get(KEY_VIDEO_SNAPSHOT_SUPPORTED); 4195 return TRUE.equals(str); 4196 } 4197 4198 /** 4199 * <p>Enables and disables video stabilization. Use 4200 * {@link #isVideoStabilizationSupported} to determine if calling this 4201 * method is valid.</p> 4202 * 4203 * <p>Video stabilization reduces the shaking due to the motion of the 4204 * camera in both the preview stream and in recorded videos, including 4205 * data received from the preview callback. It does not reduce motion 4206 * blur in images captured with 4207 * {@link Camera#takePicture takePicture}.</p> 4208 * 4209 * <p>Video stabilization can be enabled and disabled while preview or 4210 * recording is active, but toggling it may cause a jump in the video 4211 * stream that may be undesirable in a recorded video.</p> 4212 * 4213 * @param toggle Set to true to enable video stabilization, and false to 4214 * disable video stabilization. 4215 * @see #isVideoStabilizationSupported() 4216 * @see #getVideoStabilization() 4217 */ 4218 public void setVideoStabilization(boolean toggle) { 4219 set(KEY_VIDEO_STABILIZATION, toggle ? TRUE : FALSE); 4220 } 4221 4222 /** 4223 * Get the current state of video stabilization. See 4224 * {@link #setVideoStabilization} for details of video stabilization. 4225 * 4226 * @return true if video stabilization is enabled 4227 * @see #isVideoStabilizationSupported() 4228 * @see #setVideoStabilization(boolean) 4229 */ 4230 public boolean getVideoStabilization() { 4231 String str = get(KEY_VIDEO_STABILIZATION); 4232 return TRUE.equals(str); 4233 } 4234 4235 /** 4236 * Returns true if video stabilization is supported. See 4237 * {@link #setVideoStabilization} for details of video stabilization. 4238 * 4239 * @return true if video stabilization is supported 4240 * @see #setVideoStabilization(boolean) 4241 * @see #getVideoStabilization() 4242 */ 4243 public boolean isVideoStabilizationSupported() { 4244 String str = get(KEY_VIDEO_STABILIZATION_SUPPORTED); 4245 return TRUE.equals(str); 4246 } 4247 4248 // Splits a comma delimited string to an ArrayList of String. 4249 // Return null if the passing string is null or the size is 0. 4250 private ArrayList<String> split(String str) { 4251 if (str == null) return null; 4252 4253 TextUtils.StringSplitter splitter = new TextUtils.SimpleStringSplitter(','); 4254 splitter.setString(str); 4255 ArrayList<String> substrings = new ArrayList<String>(); 4256 for (String s : splitter) { 4257 substrings.add(s); 4258 } 4259 return substrings; 4260 } 4261 4262 // Splits a comma delimited string to an ArrayList of Integer. 4263 // Return null if the passing string is null or the size is 0. 4264 private ArrayList<Integer> splitInt(String str) { 4265 if (str == null) return null; 4266 4267 TextUtils.StringSplitter splitter = new TextUtils.SimpleStringSplitter(','); 4268 splitter.setString(str); 4269 ArrayList<Integer> substrings = new ArrayList<Integer>(); 4270 for (String s : splitter) { 4271 substrings.add(Integer.parseInt(s)); 4272 } 4273 if (substrings.size() == 0) return null; 4274 return substrings; 4275 } 4276 4277 private void splitInt(String str, int[] output) { 4278 if (str == null) return; 4279 4280 TextUtils.StringSplitter splitter = new TextUtils.SimpleStringSplitter(','); 4281 splitter.setString(str); 4282 int index = 0; 4283 for (String s : splitter) { 4284 output[index++] = Integer.parseInt(s); 4285 } 4286 } 4287 4288 // Splits a comma delimited string to an ArrayList of Float. 4289 private void splitFloat(String str, float[] output) { 4290 if (str == null) return; 4291 4292 TextUtils.StringSplitter splitter = new TextUtils.SimpleStringSplitter(','); 4293 splitter.setString(str); 4294 int index = 0; 4295 for (String s : splitter) { 4296 output[index++] = Float.parseFloat(s); 4297 } 4298 } 4299 4300 // Returns the value of a float parameter. 4301 private float getFloat(String key, float defaultValue) { 4302 try { 4303 return Float.parseFloat(mMap.get(key)); 4304 } catch (NumberFormatException ex) { 4305 return defaultValue; 4306 } 4307 } 4308 4309 // Returns the value of a integer parameter. 4310 private int getInt(String key, int defaultValue) { 4311 try { 4312 return Integer.parseInt(mMap.get(key)); 4313 } catch (NumberFormatException ex) { 4314 return defaultValue; 4315 } 4316 } 4317 4318 // Splits a comma delimited string to an ArrayList of Size. 4319 // Return null if the passing string is null or the size is 0. 4320 private ArrayList<Size> splitSize(String str) { 4321 if (str == null) return null; 4322 4323 TextUtils.StringSplitter splitter = new TextUtils.SimpleStringSplitter(','); 4324 splitter.setString(str); 4325 ArrayList<Size> sizeList = new ArrayList<Size>(); 4326 for (String s : splitter) { 4327 Size size = strToSize(s); 4328 if (size != null) sizeList.add(size); 4329 } 4330 if (sizeList.size() == 0) return null; 4331 return sizeList; 4332 } 4333 4334 // Parses a string (ex: "480x320") to Size object. 4335 // Return null if the passing string is null. 4336 private Size strToSize(String str) { 4337 if (str == null) return null; 4338 4339 int pos = str.indexOf('x'); 4340 if (pos != -1) { 4341 String width = str.substring(0, pos); 4342 String height = str.substring(pos + 1); 4343 return new Size(Integer.parseInt(width), 4344 Integer.parseInt(height)); 4345 } 4346 Log.e(TAG, "Invalid size parameter string=" + str); 4347 return null; 4348 } 4349 4350 // Splits a comma delimited string to an ArrayList of int array. 4351 // Example string: "(10000,26623),(10000,30000)". Return null if the 4352 // passing string is null or the size is 0. 4353 private ArrayList<int[]> splitRange(String str) { 4354 if (str == null || str.charAt(0) != '(' 4355 || str.charAt(str.length() - 1) != ')') { 4356 Log.e(TAG, "Invalid range list string=" + str); 4357 return null; 4358 } 4359 4360 ArrayList<int[]> rangeList = new ArrayList<int[]>(); 4361 int endIndex, fromIndex = 1; 4362 do { 4363 int[] range = new int[2]; 4364 endIndex = str.indexOf("),(", fromIndex); 4365 if (endIndex == -1) endIndex = str.length() - 1; 4366 splitInt(str.substring(fromIndex, endIndex), range); 4367 rangeList.add(range); 4368 fromIndex = endIndex + 3; 4369 } while (endIndex != str.length() - 1); 4370 4371 if (rangeList.size() == 0) return null; 4372 return rangeList; 4373 } 4374 4375 // Splits a comma delimited string to an ArrayList of Area objects. 4376 // Example string: "(-10,-10,0,0,300),(0,0,10,10,700)". Return null if 4377 // the passing string is null or the size is 0 or (0,0,0,0,0). 4378 private ArrayList<Area> splitArea(String str) { 4379 if (str == null || str.charAt(0) != '(' 4380 || str.charAt(str.length() - 1) != ')') { 4381 Log.e(TAG, "Invalid area string=" + str); 4382 return null; 4383 } 4384 4385 ArrayList<Area> result = new ArrayList<Area>(); 4386 int endIndex, fromIndex = 1; 4387 int[] array = new int[5]; 4388 do { 4389 endIndex = str.indexOf("),(", fromIndex); 4390 if (endIndex == -1) endIndex = str.length() - 1; 4391 splitInt(str.substring(fromIndex, endIndex), array); 4392 Rect rect = new Rect(array[0], array[1], array[2], array[3]); 4393 result.add(new Area(rect, array[4])); 4394 fromIndex = endIndex + 3; 4395 } while (endIndex != str.length() - 1); 4396 4397 if (result.size() == 0) return null; 4398 4399 if (result.size() == 1) { 4400 Area area = result.get(0); 4401 Rect rect = area.rect; 4402 if (rect.left == 0 && rect.top == 0 && rect.right == 0 4403 && rect.bottom == 0 && area.weight == 0) { 4404 return null; 4405 } 4406 } 4407 4408 return result; 4409 } 4410 4411 private boolean same(String s1, String s2) { 4412 if (s1 == null && s2 == null) return true; 4413 if (s1 != null && s1.equals(s2)) return true; 4414 return false; 4415 } 4416 }; 4417} 4418