• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
1 /*
2  * Copyright (C) 2013 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package android.hardware.camera2;
18 
19 import android.annotation.NonNull;
20 import android.hardware.camera2.impl.CameraMetadataNative;
21 import android.hardware.camera2.impl.PublicKey;
22 import android.hardware.camera2.impl.SyntheticKey;
23 import android.util.Log;
24 
25 import java.lang.reflect.Field;
26 import java.lang.reflect.Modifier;
27 import java.util.ArrayList;
28 import java.util.Arrays;
29 import java.util.Collections;
30 import java.util.List;
31 
32 /**
33  * The base class for camera controls and information.
34  *
35  * <p>
36  * This class defines the basic key/value map used for querying for camera
37  * characteristics or capture results, and for setting camera request
38  * parameters.
39  * </p>
40  *
41  * <p>
42  * All instances of CameraMetadata are immutable. The list of keys with {@link #getKeys()}
43  * never changes, nor do the values returned by any key with {@code #get} throughout
44  * the lifetime of the object.
45  * </p>
46  *
47  * @see CameraDevice
48  * @see CameraManager
49  * @see CameraCharacteristics
50  **/
51 public abstract class CameraMetadata<TKey> {
52 
53     private static final String TAG = "CameraMetadataAb";
54     private static final boolean DEBUG = false;
55     private CameraMetadataNative mNativeInstance = null;
56 
57     /**
58      * Set a camera metadata field to a value. The field definitions can be
59      * found in {@link CameraCharacteristics}, {@link CaptureResult}, and
60      * {@link CaptureRequest}.
61      *
62      * @param key The metadata field to write.
63      * @param value The value to set the field to, which must be of a matching
64      * type to the key.
65      *
66      * @hide
67      */
CameraMetadata()68     protected CameraMetadata() {
69     }
70 
71     /**
72      * Get a camera metadata field value.
73      *
74      * <p>The field definitions can be
75      * found in {@link CameraCharacteristics}, {@link CaptureResult}, and
76      * {@link CaptureRequest}.</p>
77      *
78      * <p>Querying the value for the same key more than once will return a value
79      * which is equal to the previous queried value.</p>
80      *
81      * @throws IllegalArgumentException if the key was not valid
82      *
83      * @param key The metadata field to read.
84      * @return The value of that key, or {@code null} if the field is not set.
85      *
86      * @hide
87      */
getProtected(TKey key)88      protected abstract <T> T getProtected(TKey key);
89 
90      /**
91       * @hide
92       */
setNativeInstance(CameraMetadataNative nativeInstance)93      protected void setNativeInstance(CameraMetadataNative nativeInstance) {
94         mNativeInstance = nativeInstance;
95      }
96 
97      /**
98       * @hide
99       */
getKeyClass()100      protected abstract Class<TKey> getKeyClass();
101 
102     /**
103      * Returns a list of the keys contained in this map.
104      *
105      * <p>The list returned is not modifiable, so any attempts to modify it will throw
106      * a {@code UnsupportedOperationException}.</p>
107      *
108      * <p>All values retrieved by a key from this list with {@code #get} are guaranteed to be
109      * non-{@code null}. Each key is only listed once in the list. The order of the keys
110      * is undefined.</p>
111      *
112      * @return List of the keys contained in this map.
113      */
114     @SuppressWarnings("unchecked")
115     @NonNull
getKeys()116     public List<TKey> getKeys() {
117         Class<CameraMetadata<TKey>> thisClass = (Class<CameraMetadata<TKey>>) getClass();
118         return Collections.unmodifiableList(
119                 getKeys(thisClass, getKeyClass(), this, /*filterTags*/null));
120     }
121 
122     /**
123      * Return a list of all the Key<?> that are declared as a field inside of the class
124      * {@code type}.
125      *
126      * <p>
127      * Optionally, if {@code instance} is not null, then filter out any keys with null values.
128      * </p>
129      *
130      * <p>
131      * Optionally, if {@code filterTags} is not {@code null}, then filter out any keys
132      * whose native {@code tag} is not in {@code filterTags}. The {@code filterTags} array will be
133      * sorted as a side effect.
134      * </p>
135      */
136      /*package*/ @SuppressWarnings("unchecked")
getKeys( Class<?> type, Class<TKey> keyClass, CameraMetadata<TKey> instance, int[] filterTags)137     <TKey> ArrayList<TKey> getKeys(
138              Class<?> type, Class<TKey> keyClass,
139              CameraMetadata<TKey> instance,
140              int[] filterTags) {
141 
142         if (DEBUG) Log.v(TAG, "getKeysStatic for " + type);
143 
144         // TotalCaptureResult does not have any of the keys on it, use CaptureResult instead
145         if (type.equals(TotalCaptureResult.class)) {
146             type = CaptureResult.class;
147         }
148 
149         if (filterTags != null) {
150             Arrays.sort(filterTags);
151         }
152 
153         ArrayList<TKey> keyList = new ArrayList<TKey>();
154 
155         Field[] fields = type.getDeclaredFields();
156         for (Field field : fields) {
157             // Filter for Keys that are public
158             if (field.getType().isAssignableFrom(keyClass) &&
159                     (field.getModifiers() & Modifier.PUBLIC) != 0) {
160 
161                 TKey key;
162                 try {
163                     key = (TKey) field.get(instance);
164                 } catch (IllegalAccessException e) {
165                     throw new AssertionError("Can't get IllegalAccessException", e);
166                 } catch (IllegalArgumentException e) {
167                     throw new AssertionError("Can't get IllegalArgumentException", e);
168                 }
169 
170                 if (instance == null || instance.getProtected(key) != null) {
171                     if (shouldKeyBeAdded(key, field, filterTags)) {
172                         keyList.add(key);
173 
174                         if (DEBUG) {
175                             Log.v(TAG, "getKeysStatic - key was added - " + key);
176                         }
177                     } else if (DEBUG) {
178                         Log.v(TAG, "getKeysStatic - key was filtered - " + key);
179                     }
180                 }
181             }
182         }
183 
184         if (null == mNativeInstance) {
185             return keyList;
186         }
187 
188         ArrayList<TKey> vendorKeys = mNativeInstance.getAllVendorKeys(keyClass);
189 
190         if (vendorKeys != null) {
191             for (TKey k : vendorKeys) {
192                 String keyName;
193                 long vendorId;
194                 if (k instanceof CaptureRequest.Key<?>) {
195                     keyName = ((CaptureRequest.Key<?>) k).getName();
196                     vendorId = ((CaptureRequest.Key<?>) k).getVendorId();
197                 } else if (k instanceof CaptureResult.Key<?>) {
198                     keyName = ((CaptureResult.Key<?>) k).getName();
199                     vendorId = ((CaptureResult.Key<?>) k).getVendorId();
200                 } else if (k instanceof CameraCharacteristics.Key<?>) {
201                     keyName = ((CameraCharacteristics.Key<?>) k).getName();
202                     vendorId = ((CameraCharacteristics.Key<?>) k).getVendorId();
203                 } else {
204                     continue;
205                 }
206 
207                 if (filterTags == null || Arrays.binarySearch(filterTags,
208                         CameraMetadataNative.getTag(keyName, vendorId)) >= 0) {
209                     keyList.add(k);
210                 }
211             }
212         }
213 
214         return keyList;
215     }
216 
217     @SuppressWarnings("rawtypes")
shouldKeyBeAdded(TKey key, Field field, int[] filterTags)218     private static <TKey> boolean shouldKeyBeAdded(TKey key, Field field, int[] filterTags) {
219         if (key == null) {
220             throw new NullPointerException("key must not be null");
221         }
222 
223         CameraMetadataNative.Key nativeKey;
224 
225         /*
226          * Get the native key from the public api key
227          */
228         if (key instanceof CameraCharacteristics.Key) {
229             nativeKey = ((CameraCharacteristics.Key)key).getNativeKey();
230         } else if (key instanceof CaptureResult.Key) {
231             nativeKey = ((CaptureResult.Key)key).getNativeKey();
232         } else if (key instanceof CaptureRequest.Key) {
233             nativeKey = ((CaptureRequest.Key)key).getNativeKey();
234         } else {
235             // Reject fields that aren't a key
236             throw new IllegalArgumentException("key type must be that of a metadata key");
237         }
238 
239         if (field.getAnnotation(PublicKey.class) == null) {
240             // Never expose @hide keys up to the API user
241             return false;
242         }
243 
244         // No filtering necessary
245         if (filterTags == null) {
246             return true;
247         }
248 
249         if (field.getAnnotation(SyntheticKey.class) != null) {
250             // This key is synthetic, so calling #getTag will throw IAE
251 
252             // TODO: don't just assume all public+synthetic keys are always available
253             return true;
254         }
255 
256         /*
257          * Regular key: look up it's native tag and see if it's in filterTags
258          */
259 
260         int keyTag = nativeKey.getTag();
261 
262         // non-negative result is returned iff the value is in the array
263         return Arrays.binarySearch(filterTags, keyTag) >= 0;
264     }
265 
266     /*@O~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~
267      * The enum values below this point are generated from metadata
268      * definitions in /system/media/camera/docs. Do not modify by hand or
269      * modify the comment blocks at the start or end.
270      *~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~*/
271 
272     //
273     // Enumeration values for CameraCharacteristics#LENS_INFO_FOCUS_DISTANCE_CALIBRATION
274     //
275 
276     /**
277      * <p>The lens focus distance is not accurate, and the units used for
278      * {@link CaptureRequest#LENS_FOCUS_DISTANCE android.lens.focusDistance} do not correspond to any physical units.</p>
279      * <p>Setting the lens to the same focus distance on separate occasions may
280      * result in a different real focus distance, depending on factors such
281      * as the orientation of the device, the age of the focusing mechanism,
282      * and the device temperature. The focus distance value will still be
283      * in the range of <code>[0, {@link CameraCharacteristics#LENS_INFO_MINIMUM_FOCUS_DISTANCE android.lens.info.minimumFocusDistance}]</code>, where 0
284      * represents the farthest focus.</p>
285      *
286      * @see CaptureRequest#LENS_FOCUS_DISTANCE
287      * @see CameraCharacteristics#LENS_INFO_MINIMUM_FOCUS_DISTANCE
288      * @see CameraCharacteristics#LENS_INFO_FOCUS_DISTANCE_CALIBRATION
289      */
290     public static final int LENS_INFO_FOCUS_DISTANCE_CALIBRATION_UNCALIBRATED = 0;
291 
292     /**
293      * <p>The lens focus distance is measured in diopters.</p>
294      * <p>However, setting the lens to the same focus distance
295      * on separate occasions may result in a different real
296      * focus distance, depending on factors such as the
297      * orientation of the device, the age of the focusing
298      * mechanism, and the device temperature.</p>
299      * @see CameraCharacteristics#LENS_INFO_FOCUS_DISTANCE_CALIBRATION
300      */
301     public static final int LENS_INFO_FOCUS_DISTANCE_CALIBRATION_APPROXIMATE = 1;
302 
303     /**
304      * <p>The lens focus distance is measured in diopters, and
305      * is calibrated.</p>
306      * <p>The lens mechanism is calibrated so that setting the
307      * same focus distance is repeatable on multiple
308      * occasions with good accuracy, and the focus distance
309      * corresponds to the real physical distance to the plane
310      * of best focus.</p>
311      * @see CameraCharacteristics#LENS_INFO_FOCUS_DISTANCE_CALIBRATION
312      */
313     public static final int LENS_INFO_FOCUS_DISTANCE_CALIBRATION_CALIBRATED = 2;
314 
315     //
316     // Enumeration values for CameraCharacteristics#LENS_FACING
317     //
318 
319     /**
320      * <p>The camera device faces the same direction as the device's screen.</p>
321      * @see CameraCharacteristics#LENS_FACING
322      */
323     public static final int LENS_FACING_FRONT = 0;
324 
325     /**
326      * <p>The camera device faces the opposite direction as the device's screen.</p>
327      * @see CameraCharacteristics#LENS_FACING
328      */
329     public static final int LENS_FACING_BACK = 1;
330 
331     /**
332      * <p>The camera device is an external camera, and has no fixed facing relative to the
333      * device's screen.</p>
334      * @see CameraCharacteristics#LENS_FACING
335      */
336     public static final int LENS_FACING_EXTERNAL = 2;
337 
338     //
339     // Enumeration values for CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
340     //
341 
342     /**
343      * <p>The minimal set of capabilities that every camera
344      * device (regardless of {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel})
345      * supports.</p>
346      * <p>This capability is listed by all normal devices, and
347      * indicates that the camera device has a feature set
348      * that's comparable to the baseline requirements for the
349      * older android.hardware.Camera API.</p>
350      * <p>Devices with the DEPTH_OUTPUT capability might not list this
351      * capability, indicating that they support only depth measurement,
352      * not standard color output.</p>
353      *
354      * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
355      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
356      */
357     public static final int REQUEST_AVAILABLE_CAPABILITIES_BACKWARD_COMPATIBLE = 0;
358 
359     /**
360      * <p>The camera device can be manually controlled (3A algorithms such
361      * as auto-exposure, and auto-focus can be bypassed).
362      * The camera device supports basic manual control of the sensor image
363      * acquisition related stages. This means the following controls are
364      * guaranteed to be supported:</p>
365      * <ul>
366      * <li>Manual frame duration control<ul>
367      * <li>{@link CaptureRequest#SENSOR_FRAME_DURATION android.sensor.frameDuration}</li>
368      * <li>{@link CameraCharacteristics#SENSOR_INFO_MAX_FRAME_DURATION android.sensor.info.maxFrameDuration}</li>
369      * </ul>
370      * </li>
371      * <li>Manual exposure control<ul>
372      * <li>{@link CaptureRequest#SENSOR_EXPOSURE_TIME android.sensor.exposureTime}</li>
373      * <li>{@link CameraCharacteristics#SENSOR_INFO_EXPOSURE_TIME_RANGE android.sensor.info.exposureTimeRange}</li>
374      * </ul>
375      * </li>
376      * <li>Manual sensitivity control<ul>
377      * <li>{@link CaptureRequest#SENSOR_SENSITIVITY android.sensor.sensitivity}</li>
378      * <li>{@link CameraCharacteristics#SENSOR_INFO_SENSITIVITY_RANGE android.sensor.info.sensitivityRange}</li>
379      * </ul>
380      * </li>
381      * <li>Manual lens control (if the lens is adjustable)<ul>
382      * <li>android.lens.*</li>
383      * </ul>
384      * </li>
385      * <li>Manual flash control (if a flash unit is present)<ul>
386      * <li>android.flash.*</li>
387      * </ul>
388      * </li>
389      * <li>Manual black level locking<ul>
390      * <li>{@link CaptureRequest#BLACK_LEVEL_LOCK android.blackLevel.lock}</li>
391      * </ul>
392      * </li>
393      * <li>Auto exposure lock<ul>
394      * <li>{@link CaptureRequest#CONTROL_AE_LOCK android.control.aeLock}</li>
395      * </ul>
396      * </li>
397      * </ul>
398      * <p>If any of the above 3A algorithms are enabled, then the camera
399      * device will accurately report the values applied by 3A in the
400      * result.</p>
401      * <p>A given camera device may also support additional manual sensor controls,
402      * but this capability only covers the above list of controls.</p>
403      * <p>If this is supported, {@link CameraCharacteristics#SCALER_STREAM_CONFIGURATION_MAP android.scaler.streamConfigurationMap} will
404      * additionally return a min frame duration that is greater than
405      * zero for each supported size-format combination.</p>
406      *
407      * @see CaptureRequest#BLACK_LEVEL_LOCK
408      * @see CaptureRequest#CONTROL_AE_LOCK
409      * @see CameraCharacteristics#SCALER_STREAM_CONFIGURATION_MAP
410      * @see CaptureRequest#SENSOR_EXPOSURE_TIME
411      * @see CaptureRequest#SENSOR_FRAME_DURATION
412      * @see CameraCharacteristics#SENSOR_INFO_EXPOSURE_TIME_RANGE
413      * @see CameraCharacteristics#SENSOR_INFO_MAX_FRAME_DURATION
414      * @see CameraCharacteristics#SENSOR_INFO_SENSITIVITY_RANGE
415      * @see CaptureRequest#SENSOR_SENSITIVITY
416      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
417      */
418     public static final int REQUEST_AVAILABLE_CAPABILITIES_MANUAL_SENSOR = 1;
419 
420     /**
421      * <p>The camera device post-processing stages can be manually controlled.
422      * The camera device supports basic manual control of the image post-processing
423      * stages. This means the following controls are guaranteed to be supported:</p>
424      * <ul>
425      * <li>
426      * <p>Manual tonemap control</p>
427      * <ul>
428      * <li>{@link CaptureRequest#TONEMAP_CURVE android.tonemap.curve}</li>
429      * <li>{@link CaptureRequest#TONEMAP_MODE android.tonemap.mode}</li>
430      * <li>{@link CameraCharacteristics#TONEMAP_MAX_CURVE_POINTS android.tonemap.maxCurvePoints}</li>
431      * <li>{@link CaptureRequest#TONEMAP_GAMMA android.tonemap.gamma}</li>
432      * <li>{@link CaptureRequest#TONEMAP_PRESET_CURVE android.tonemap.presetCurve}</li>
433      * </ul>
434      * </li>
435      * <li>
436      * <p>Manual white balance control</p>
437      * <ul>
438      * <li>{@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}</li>
439      * <li>{@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains}</li>
440      * </ul>
441      * </li>
442      * <li>Manual lens shading map control<ul>
443      * <li>{@link CaptureRequest#SHADING_MODE android.shading.mode}</li>
444      * <li>{@link CaptureRequest#STATISTICS_LENS_SHADING_MAP_MODE android.statistics.lensShadingMapMode}</li>
445      * <li>android.statistics.lensShadingMap</li>
446      * <li>android.lens.info.shadingMapSize</li>
447      * </ul>
448      * </li>
449      * <li>Manual aberration correction control (if aberration correction is supported)<ul>
450      * <li>{@link CaptureRequest#COLOR_CORRECTION_ABERRATION_MODE android.colorCorrection.aberrationMode}</li>
451      * <li>{@link CameraCharacteristics#COLOR_CORRECTION_AVAILABLE_ABERRATION_MODES android.colorCorrection.availableAberrationModes}</li>
452      * </ul>
453      * </li>
454      * <li>Auto white balance lock<ul>
455      * <li>{@link CaptureRequest#CONTROL_AWB_LOCK android.control.awbLock}</li>
456      * </ul>
457      * </li>
458      * </ul>
459      * <p>If auto white balance is enabled, then the camera device
460      * will accurately report the values applied by AWB in the result.</p>
461      * <p>A given camera device may also support additional post-processing
462      * controls, but this capability only covers the above list of controls.</p>
463      *
464      * @see CaptureRequest#COLOR_CORRECTION_ABERRATION_MODE
465      * @see CameraCharacteristics#COLOR_CORRECTION_AVAILABLE_ABERRATION_MODES
466      * @see CaptureRequest#COLOR_CORRECTION_GAINS
467      * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
468      * @see CaptureRequest#CONTROL_AWB_LOCK
469      * @see CaptureRequest#SHADING_MODE
470      * @see CaptureRequest#STATISTICS_LENS_SHADING_MAP_MODE
471      * @see CaptureRequest#TONEMAP_CURVE
472      * @see CaptureRequest#TONEMAP_GAMMA
473      * @see CameraCharacteristics#TONEMAP_MAX_CURVE_POINTS
474      * @see CaptureRequest#TONEMAP_MODE
475      * @see CaptureRequest#TONEMAP_PRESET_CURVE
476      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
477      */
478     public static final int REQUEST_AVAILABLE_CAPABILITIES_MANUAL_POST_PROCESSING = 2;
479 
480     /**
481      * <p>The camera device supports outputting RAW buffers and
482      * metadata for interpreting them.</p>
483      * <p>Devices supporting the RAW capability allow both for
484      * saving DNG files, and for direct application processing of
485      * raw sensor images.</p>
486      * <ul>
487      * <li>RAW_SENSOR is supported as an output format.</li>
488      * <li>The maximum available resolution for RAW_SENSOR streams
489      *   will match either the value in
490      *   {@link CameraCharacteristics#SENSOR_INFO_PIXEL_ARRAY_SIZE android.sensor.info.pixelArraySize} or
491      *   {@link CameraCharacteristics#SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE android.sensor.info.preCorrectionActiveArraySize}.</li>
492      * <li>All DNG-related optional metadata entries are provided
493      *   by the camera device.</li>
494      * </ul>
495      *
496      * @see CameraCharacteristics#SENSOR_INFO_PIXEL_ARRAY_SIZE
497      * @see CameraCharacteristics#SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE
498      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
499      */
500     public static final int REQUEST_AVAILABLE_CAPABILITIES_RAW = 3;
501 
502     /**
503      * <p>The camera device supports the Zero Shutter Lag reprocessing use case.</p>
504      * <ul>
505      * <li>One input stream is supported, that is, <code>{@link CameraCharacteristics#REQUEST_MAX_NUM_INPUT_STREAMS android.request.maxNumInputStreams} == 1</code>.</li>
506      * <li>{@link android.graphics.ImageFormat#PRIVATE } is supported as an output/input format,
507      *   that is, {@link android.graphics.ImageFormat#PRIVATE } is included in the lists of
508      *   formats returned by {@link android.hardware.camera2.params.StreamConfigurationMap#getInputFormats } and {@link android.hardware.camera2.params.StreamConfigurationMap#getOutputFormats }.</li>
509      * <li>{@link android.hardware.camera2.params.StreamConfigurationMap#getValidOutputFormatsForInput }
510      *   returns non empty int[] for each supported input format returned by {@link android.hardware.camera2.params.StreamConfigurationMap#getInputFormats }.</li>
511      * <li>Each size returned by {@link android.hardware.camera2.params.StreamConfigurationMap#getInputSizes getInputSizes(ImageFormat.PRIVATE)} is also included in {@link android.hardware.camera2.params.StreamConfigurationMap#getOutputSizes getOutputSizes(ImageFormat.PRIVATE)}</li>
512      * <li>Using {@link android.graphics.ImageFormat#PRIVATE } does not cause a frame rate drop
513      *   relative to the sensor's maximum capture rate (at that resolution).</li>
514      * <li>{@link android.graphics.ImageFormat#PRIVATE } will be reprocessable into both
515      *   {@link android.graphics.ImageFormat#YUV_420_888 } and
516      *   {@link android.graphics.ImageFormat#JPEG } formats.</li>
517      * <li>The maximum available resolution for PRIVATE streams
518      *   (both input/output) will match the maximum available
519      *   resolution of JPEG streams.</li>
520      * <li>Static metadata {@link CameraCharacteristics#REPROCESS_MAX_CAPTURE_STALL android.reprocess.maxCaptureStall}.</li>
521      * <li>Only below controls are effective for reprocessing requests and
522      *   will be present in capture results, other controls in reprocess
523      *   requests will be ignored by the camera device.<ul>
524      * <li>android.jpeg.*</li>
525      * <li>{@link CaptureRequest#NOISE_REDUCTION_MODE android.noiseReduction.mode}</li>
526      * <li>{@link CaptureRequest#EDGE_MODE android.edge.mode}</li>
527      * </ul>
528      * </li>
529      * <li>{@link CameraCharacteristics#NOISE_REDUCTION_AVAILABLE_NOISE_REDUCTION_MODES android.noiseReduction.availableNoiseReductionModes} and
530      *   {@link CameraCharacteristics#EDGE_AVAILABLE_EDGE_MODES android.edge.availableEdgeModes} will both list ZERO_SHUTTER_LAG as a supported mode.</li>
531      * </ul>
532      *
533      * @see CameraCharacteristics#EDGE_AVAILABLE_EDGE_MODES
534      * @see CaptureRequest#EDGE_MODE
535      * @see CameraCharacteristics#NOISE_REDUCTION_AVAILABLE_NOISE_REDUCTION_MODES
536      * @see CaptureRequest#NOISE_REDUCTION_MODE
537      * @see CameraCharacteristics#REPROCESS_MAX_CAPTURE_STALL
538      * @see CameraCharacteristics#REQUEST_MAX_NUM_INPUT_STREAMS
539      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
540      */
541     public static final int REQUEST_AVAILABLE_CAPABILITIES_PRIVATE_REPROCESSING = 4;
542 
543     /**
544      * <p>The camera device supports accurately reporting the sensor settings for many of
545      * the sensor controls while the built-in 3A algorithm is running.  This allows
546      * reporting of sensor settings even when these settings cannot be manually changed.</p>
547      * <p>The values reported for the following controls are guaranteed to be available
548      * in the CaptureResult, including when 3A is enabled:</p>
549      * <ul>
550      * <li>Exposure control<ul>
551      * <li>{@link CaptureRequest#SENSOR_EXPOSURE_TIME android.sensor.exposureTime}</li>
552      * </ul>
553      * </li>
554      * <li>Sensitivity control<ul>
555      * <li>{@link CaptureRequest#SENSOR_SENSITIVITY android.sensor.sensitivity}</li>
556      * </ul>
557      * </li>
558      * <li>Lens controls (if the lens is adjustable)<ul>
559      * <li>{@link CaptureRequest#LENS_FOCUS_DISTANCE android.lens.focusDistance}</li>
560      * <li>{@link CaptureRequest#LENS_APERTURE android.lens.aperture}</li>
561      * </ul>
562      * </li>
563      * </ul>
564      * <p>This capability is a subset of the MANUAL_SENSOR control capability, and will
565      * always be included if the MANUAL_SENSOR capability is available.</p>
566      *
567      * @see CaptureRequest#LENS_APERTURE
568      * @see CaptureRequest#LENS_FOCUS_DISTANCE
569      * @see CaptureRequest#SENSOR_EXPOSURE_TIME
570      * @see CaptureRequest#SENSOR_SENSITIVITY
571      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
572      */
573     public static final int REQUEST_AVAILABLE_CAPABILITIES_READ_SENSOR_SETTINGS = 5;
574 
575     /**
576      * <p>The camera device supports capturing high-resolution images at &gt;= 20 frames per
577      * second, in at least the uncompressed YUV format, when post-processing settings are set
578      * to FAST. Additionally, maximum-resolution images can be captured at &gt;= 10 frames
579      * per second.  Here, 'high resolution' means at least 8 megapixels, or the maximum
580      * resolution of the device, whichever is smaller.</p>
581      * <p>More specifically, this means that a size matching the camera device's active array
582      * size is listed as a supported size for the {@link android.graphics.ImageFormat#YUV_420_888 } format in either {@link android.hardware.camera2.params.StreamConfigurationMap#getOutputSizes } or {@link android.hardware.camera2.params.StreamConfigurationMap#getHighResolutionOutputSizes },
583      * with a minimum frame duration for that format and size of either &lt;= 1/20 s, or
584      * &lt;= 1/10 s, respectively; and the {@link CameraCharacteristics#CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES android.control.aeAvailableTargetFpsRanges} entry
585      * lists at least one FPS range where the minimum FPS is &gt;= 1 / minimumFrameDuration
586      * for the maximum-size YUV_420_888 format.  If that maximum size is listed in {@link android.hardware.camera2.params.StreamConfigurationMap#getHighResolutionOutputSizes },
587      * then the list of resolutions for YUV_420_888 from {@link android.hardware.camera2.params.StreamConfigurationMap#getOutputSizes } contains at
588      * least one resolution &gt;= 8 megapixels, with a minimum frame duration of &lt;= 1/20
589      * s.</p>
590      * <p>If the device supports the {@link android.graphics.ImageFormat#RAW10 }, {@link android.graphics.ImageFormat#RAW12 }, then those can also be captured at the same rate
591      * as the maximum-size YUV_420_888 resolution is.</p>
592      * <p>If the device supports the PRIVATE_REPROCESSING capability, then the same guarantees
593      * as for the YUV_420_888 format also apply to the {@link android.graphics.ImageFormat#PRIVATE } format.</p>
594      * <p>In addition, the {@link CameraCharacteristics#SYNC_MAX_LATENCY android.sync.maxLatency} field is guaranted to have a value between 0
595      * and 4, inclusive. {@link CameraCharacteristics#CONTROL_AE_LOCK_AVAILABLE android.control.aeLockAvailable} and {@link CameraCharacteristics#CONTROL_AWB_LOCK_AVAILABLE android.control.awbLockAvailable}
596      * are also guaranteed to be <code>true</code> so burst capture with these two locks ON yields
597      * consistent image output.</p>
598      *
599      * @see CameraCharacteristics#CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES
600      * @see CameraCharacteristics#CONTROL_AE_LOCK_AVAILABLE
601      * @see CameraCharacteristics#CONTROL_AWB_LOCK_AVAILABLE
602      * @see CameraCharacteristics#SYNC_MAX_LATENCY
603      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
604      */
605     public static final int REQUEST_AVAILABLE_CAPABILITIES_BURST_CAPTURE = 6;
606 
607     /**
608      * <p>The camera device supports the YUV_420_888 reprocessing use case, similar as
609      * PRIVATE_REPROCESSING, This capability requires the camera device to support the
610      * following:</p>
611      * <ul>
612      * <li>One input stream is supported, that is, <code>{@link CameraCharacteristics#REQUEST_MAX_NUM_INPUT_STREAMS android.request.maxNumInputStreams} == 1</code>.</li>
613      * <li>{@link android.graphics.ImageFormat#YUV_420_888 } is supported as an output/input format, that is,
614      *   YUV_420_888 is included in the lists of formats returned by
615      *   {@link android.hardware.camera2.params.StreamConfigurationMap#getInputFormats } and
616      *   {@link android.hardware.camera2.params.StreamConfigurationMap#getOutputFormats }.</li>
617      * <li>{@link android.hardware.camera2.params.StreamConfigurationMap#getValidOutputFormatsForInput }
618      *   returns non-empty int[] for each supported input format returned by {@link android.hardware.camera2.params.StreamConfigurationMap#getInputFormats }.</li>
619      * <li>Each size returned by {@link android.hardware.camera2.params.StreamConfigurationMap#getInputSizes getInputSizes(YUV_420_888)} is also included in {@link android.hardware.camera2.params.StreamConfigurationMap#getOutputSizes getOutputSizes(YUV_420_888)}</li>
620      * <li>Using {@link android.graphics.ImageFormat#YUV_420_888 } does not cause a frame rate drop
621      *   relative to the sensor's maximum capture rate (at that resolution).</li>
622      * <li>{@link android.graphics.ImageFormat#YUV_420_888 } will be reprocessable into both
623      *   {@link android.graphics.ImageFormat#YUV_420_888 } and {@link android.graphics.ImageFormat#JPEG } formats.</li>
624      * <li>The maximum available resolution for {@link android.graphics.ImageFormat#YUV_420_888 } streams (both input/output) will match the
625      *   maximum available resolution of {@link android.graphics.ImageFormat#JPEG } streams.</li>
626      * <li>Static metadata {@link CameraCharacteristics#REPROCESS_MAX_CAPTURE_STALL android.reprocess.maxCaptureStall}.</li>
627      * <li>Only the below controls are effective for reprocessing requests and will be present
628      *   in capture results. The reprocess requests are from the original capture results that
629      *   are associated with the intermediate {@link android.graphics.ImageFormat#YUV_420_888 }
630      *   output buffers.  All other controls in the reprocess requests will be ignored by the
631      *   camera device.<ul>
632      * <li>android.jpeg.*</li>
633      * <li>{@link CaptureRequest#NOISE_REDUCTION_MODE android.noiseReduction.mode}</li>
634      * <li>{@link CaptureRequest#EDGE_MODE android.edge.mode}</li>
635      * <li>{@link CaptureRequest#REPROCESS_EFFECTIVE_EXPOSURE_FACTOR android.reprocess.effectiveExposureFactor}</li>
636      * </ul>
637      * </li>
638      * <li>{@link CameraCharacteristics#NOISE_REDUCTION_AVAILABLE_NOISE_REDUCTION_MODES android.noiseReduction.availableNoiseReductionModes} and
639      *   {@link CameraCharacteristics#EDGE_AVAILABLE_EDGE_MODES android.edge.availableEdgeModes} will both list ZERO_SHUTTER_LAG as a supported mode.</li>
640      * </ul>
641      *
642      * @see CameraCharacteristics#EDGE_AVAILABLE_EDGE_MODES
643      * @see CaptureRequest#EDGE_MODE
644      * @see CameraCharacteristics#NOISE_REDUCTION_AVAILABLE_NOISE_REDUCTION_MODES
645      * @see CaptureRequest#NOISE_REDUCTION_MODE
646      * @see CaptureRequest#REPROCESS_EFFECTIVE_EXPOSURE_FACTOR
647      * @see CameraCharacteristics#REPROCESS_MAX_CAPTURE_STALL
648      * @see CameraCharacteristics#REQUEST_MAX_NUM_INPUT_STREAMS
649      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
650      */
651     public static final int REQUEST_AVAILABLE_CAPABILITIES_YUV_REPROCESSING = 7;
652 
653     /**
654      * <p>The camera device can produce depth measurements from its field of view.</p>
655      * <p>This capability requires the camera device to support the following:</p>
656      * <ul>
657      * <li>{@link android.graphics.ImageFormat#DEPTH16 } is supported as an output format.</li>
658      * <li>{@link android.graphics.ImageFormat#DEPTH_POINT_CLOUD } is optionally supported as an
659      *   output format.</li>
660      * <li>This camera device, and all camera devices with the same {@link CameraCharacteristics#LENS_FACING android.lens.facing},
661      *   will list the following calibration entries in both
662      *   {@link android.hardware.camera2.CameraCharacteristics } and
663      *   {@link android.hardware.camera2.CaptureResult }:<ul>
664      * <li>{@link CameraCharacteristics#LENS_POSE_TRANSLATION android.lens.poseTranslation}</li>
665      * <li>{@link CameraCharacteristics#LENS_POSE_ROTATION android.lens.poseRotation}</li>
666      * <li>{@link CameraCharacteristics#LENS_INTRINSIC_CALIBRATION android.lens.intrinsicCalibration}</li>
667      * <li>{@link CameraCharacteristics#LENS_RADIAL_DISTORTION android.lens.radialDistortion}</li>
668      * </ul>
669      * </li>
670      * <li>The {@link CameraCharacteristics#DEPTH_DEPTH_IS_EXCLUSIVE android.depth.depthIsExclusive} entry is listed by this device.</li>
671      * <li>A LIMITED camera with only the DEPTH_OUTPUT capability does not have to support
672      *   normal YUV_420_888, JPEG, and PRIV-format outputs. It only has to support the DEPTH16
673      *   format.</li>
674      * </ul>
675      * <p>Generally, depth output operates at a slower frame rate than standard color capture,
676      * so the DEPTH16 and DEPTH_POINT_CLOUD formats will commonly have a stall duration that
677      * should be accounted for (see
678      * {@link android.hardware.camera2.params.StreamConfigurationMap#getOutputStallDuration }).
679      * On a device that supports both depth and color-based output, to enable smooth preview,
680      * using a repeating burst is recommended, where a depth-output target is only included
681      * once every N frames, where N is the ratio between preview output rate and depth output
682      * rate, including depth stall time.</p>
683      *
684      * @see CameraCharacteristics#DEPTH_DEPTH_IS_EXCLUSIVE
685      * @see CameraCharacteristics#LENS_FACING
686      * @see CameraCharacteristics#LENS_INTRINSIC_CALIBRATION
687      * @see CameraCharacteristics#LENS_POSE_ROTATION
688      * @see CameraCharacteristics#LENS_POSE_TRANSLATION
689      * @see CameraCharacteristics#LENS_RADIAL_DISTORTION
690      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
691      */
692     public static final int REQUEST_AVAILABLE_CAPABILITIES_DEPTH_OUTPUT = 8;
693 
694     /**
695      * <p>The device supports constrained high speed video recording (frame rate &gt;=120fps)
696      * use case. The camera device will support high speed capture session created by
697      * {@link android.hardware.camera2.CameraDevice#createConstrainedHighSpeedCaptureSession }, which
698      * only accepts high speed request lists created by
699      * {@link android.hardware.camera2.CameraConstrainedHighSpeedCaptureSession#createHighSpeedRequestList }.</p>
700      * <p>A camera device can still support high speed video streaming by advertising the high speed
701      * FPS ranges in {@link CameraCharacteristics#CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES android.control.aeAvailableTargetFpsRanges}. For this case, all normal
702      * capture request per frame control and synchronization requirements will apply to
703      * the high speed fps ranges, the same as all other fps ranges. This capability describes
704      * the capability of a specialized operating mode with many limitations (see below), which
705      * is only targeted at high speed video recording.</p>
706      * <p>The supported high speed video sizes and fps ranges are specified in
707      * {@link android.hardware.camera2.params.StreamConfigurationMap#getHighSpeedVideoFpsRanges }.
708      * To get desired output frame rates, the application is only allowed to select video size
709      * and FPS range combinations provided by
710      * {@link android.hardware.camera2.params.StreamConfigurationMap#getHighSpeedVideoSizes }.
711      * The fps range can be controlled via {@link CaptureRequest#CONTROL_AE_TARGET_FPS_RANGE android.control.aeTargetFpsRange}.</p>
712      * <p>In this capability, the camera device will override aeMode, awbMode, and afMode to
713      * ON, AUTO, and CONTINUOUS_VIDEO, respectively. All post-processing block mode
714      * controls will be overridden to be FAST. Therefore, no manual control of capture
715      * and post-processing parameters is possible. All other controls operate the
716      * same as when {@link CaptureRequest#CONTROL_MODE android.control.mode} == AUTO. This means that all other
717      * android.control.* fields continue to work, such as</p>
718      * <ul>
719      * <li>{@link CaptureRequest#CONTROL_AE_TARGET_FPS_RANGE android.control.aeTargetFpsRange}</li>
720      * <li>{@link CaptureRequest#CONTROL_AE_EXPOSURE_COMPENSATION android.control.aeExposureCompensation}</li>
721      * <li>{@link CaptureRequest#CONTROL_AE_LOCK android.control.aeLock}</li>
722      * <li>{@link CaptureRequest#CONTROL_AWB_LOCK android.control.awbLock}</li>
723      * <li>{@link CaptureRequest#CONTROL_EFFECT_MODE android.control.effectMode}</li>
724      * <li>{@link CaptureRequest#CONTROL_AE_REGIONS android.control.aeRegions}</li>
725      * <li>{@link CaptureRequest#CONTROL_AF_REGIONS android.control.afRegions}</li>
726      * <li>{@link CaptureRequest#CONTROL_AWB_REGIONS android.control.awbRegions}</li>
727      * <li>{@link CaptureRequest#CONTROL_AF_TRIGGER android.control.afTrigger}</li>
728      * <li>{@link CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER android.control.aePrecaptureTrigger}</li>
729      * </ul>
730      * <p>Outside of android.control.*, the following controls will work:</p>
731      * <ul>
732      * <li>{@link CaptureRequest#FLASH_MODE android.flash.mode} (TORCH mode only, automatic flash for still capture will not
733      * work since aeMode is ON)</li>
734      * <li>{@link CaptureRequest#LENS_OPTICAL_STABILIZATION_MODE android.lens.opticalStabilizationMode} (if it is supported)</li>
735      * <li>{@link CaptureRequest#SCALER_CROP_REGION android.scaler.cropRegion}</li>
736      * <li>{@link CaptureRequest#STATISTICS_FACE_DETECT_MODE android.statistics.faceDetectMode} (if it is supported)</li>
737      * </ul>
738      * <p>For high speed recording use case, the actual maximum supported frame rate may
739      * be lower than what camera can output, depending on the destination Surfaces for
740      * the image data. For example, if the destination surface is from video encoder,
741      * the application need check if the video encoder is capable of supporting the
742      * high frame rate for a given video size, or it will end up with lower recording
743      * frame rate. If the destination surface is from preview window, the actual preview frame
744      * rate will be bounded by the screen refresh rate.</p>
745      * <p>The camera device will only support up to 2 high speed simultaneous output surfaces
746      * (preview and recording surfaces)
747      * in this mode. Above controls will be effective only if all of below conditions are true:</p>
748      * <ul>
749      * <li>The application creates a camera capture session with no more than 2 surfaces via
750      * {@link android.hardware.camera2.CameraDevice#createConstrainedHighSpeedCaptureSession }. The
751      * targeted surfaces must be preview surface (either from
752      * {@link android.view.SurfaceView } or {@link android.graphics.SurfaceTexture }) or
753      * recording surface(either from {@link android.media.MediaRecorder#getSurface } or
754      * {@link android.media.MediaCodec#createInputSurface }).</li>
755      * <li>The stream sizes are selected from the sizes reported by
756      * {@link android.hardware.camera2.params.StreamConfigurationMap#getHighSpeedVideoSizes }.</li>
757      * <li>The FPS ranges are selected from
758      * {@link android.hardware.camera2.params.StreamConfigurationMap#getHighSpeedVideoFpsRanges }.</li>
759      * </ul>
760      * <p>When above conditions are NOT satistied,
761      * {@link android.hardware.camera2.CameraDevice#createConstrainedHighSpeedCaptureSession }
762      * will fail.</p>
763      * <p>Switching to a FPS range that has different maximum FPS may trigger some camera device
764      * reconfigurations, which may introduce extra latency. It is recommended that
765      * the application avoids unnecessary maximum target FPS changes as much as possible
766      * during high speed streaming.</p>
767      *
768      * @see CameraCharacteristics#CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES
769      * @see CaptureRequest#CONTROL_AE_EXPOSURE_COMPENSATION
770      * @see CaptureRequest#CONTROL_AE_LOCK
771      * @see CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
772      * @see CaptureRequest#CONTROL_AE_REGIONS
773      * @see CaptureRequest#CONTROL_AE_TARGET_FPS_RANGE
774      * @see CaptureRequest#CONTROL_AF_REGIONS
775      * @see CaptureRequest#CONTROL_AF_TRIGGER
776      * @see CaptureRequest#CONTROL_AWB_LOCK
777      * @see CaptureRequest#CONTROL_AWB_REGIONS
778      * @see CaptureRequest#CONTROL_EFFECT_MODE
779      * @see CaptureRequest#CONTROL_MODE
780      * @see CaptureRequest#FLASH_MODE
781      * @see CaptureRequest#LENS_OPTICAL_STABILIZATION_MODE
782      * @see CaptureRequest#SCALER_CROP_REGION
783      * @see CaptureRequest#STATISTICS_FACE_DETECT_MODE
784      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
785      */
786     public static final int REQUEST_AVAILABLE_CAPABILITIES_CONSTRAINED_HIGH_SPEED_VIDEO = 9;
787 
788     //
789     // Enumeration values for CameraCharacteristics#SCALER_CROPPING_TYPE
790     //
791 
792     /**
793      * <p>The camera device only supports centered crop regions.</p>
794      * @see CameraCharacteristics#SCALER_CROPPING_TYPE
795      */
796     public static final int SCALER_CROPPING_TYPE_CENTER_ONLY = 0;
797 
798     /**
799      * <p>The camera device supports arbitrarily chosen crop regions.</p>
800      * @see CameraCharacteristics#SCALER_CROPPING_TYPE
801      */
802     public static final int SCALER_CROPPING_TYPE_FREEFORM = 1;
803 
804     //
805     // Enumeration values for CameraCharacteristics#SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
806     //
807 
808     /**
809      * @see CameraCharacteristics#SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
810      */
811     public static final int SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_RGGB = 0;
812 
813     /**
814      * @see CameraCharacteristics#SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
815      */
816     public static final int SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_GRBG = 1;
817 
818     /**
819      * @see CameraCharacteristics#SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
820      */
821     public static final int SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_GBRG = 2;
822 
823     /**
824      * @see CameraCharacteristics#SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
825      */
826     public static final int SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_BGGR = 3;
827 
828     /**
829      * <p>Sensor is not Bayer; output has 3 16-bit
830      * values for each pixel, instead of just 1 16-bit value
831      * per pixel.</p>
832      * @see CameraCharacteristics#SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
833      */
834     public static final int SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_RGB = 4;
835 
836     //
837     // Enumeration values for CameraCharacteristics#SENSOR_INFO_TIMESTAMP_SOURCE
838     //
839 
840     /**
841      * <p>Timestamps from {@link CaptureResult#SENSOR_TIMESTAMP android.sensor.timestamp} are in nanoseconds and monotonic,
842      * but can not be compared to timestamps from other subsystems
843      * (e.g. accelerometer, gyro etc.), or other instances of the same or different
844      * camera devices in the same system. Timestamps between streams and results for
845      * a single camera instance are comparable, and the timestamps for all buffers
846      * and the result metadata generated by a single capture are identical.</p>
847      *
848      * @see CaptureResult#SENSOR_TIMESTAMP
849      * @see CameraCharacteristics#SENSOR_INFO_TIMESTAMP_SOURCE
850      */
851     public static final int SENSOR_INFO_TIMESTAMP_SOURCE_UNKNOWN = 0;
852 
853     /**
854      * <p>Timestamps from {@link CaptureResult#SENSOR_TIMESTAMP android.sensor.timestamp} are in the same timebase as
855      * {@link android.os.SystemClock#elapsedRealtimeNanos },
856      * and they can be compared to other timestamps using that base.</p>
857      *
858      * @see CaptureResult#SENSOR_TIMESTAMP
859      * @see CameraCharacteristics#SENSOR_INFO_TIMESTAMP_SOURCE
860      */
861     public static final int SENSOR_INFO_TIMESTAMP_SOURCE_REALTIME = 1;
862 
863     //
864     // Enumeration values for CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
865     //
866 
867     /**
868      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
869      */
870     public static final int SENSOR_REFERENCE_ILLUMINANT1_DAYLIGHT = 1;
871 
872     /**
873      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
874      */
875     public static final int SENSOR_REFERENCE_ILLUMINANT1_FLUORESCENT = 2;
876 
877     /**
878      * <p>Incandescent light</p>
879      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
880      */
881     public static final int SENSOR_REFERENCE_ILLUMINANT1_TUNGSTEN = 3;
882 
883     /**
884      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
885      */
886     public static final int SENSOR_REFERENCE_ILLUMINANT1_FLASH = 4;
887 
888     /**
889      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
890      */
891     public static final int SENSOR_REFERENCE_ILLUMINANT1_FINE_WEATHER = 9;
892 
893     /**
894      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
895      */
896     public static final int SENSOR_REFERENCE_ILLUMINANT1_CLOUDY_WEATHER = 10;
897 
898     /**
899      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
900      */
901     public static final int SENSOR_REFERENCE_ILLUMINANT1_SHADE = 11;
902 
903     /**
904      * <p>D 5700 - 7100K</p>
905      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
906      */
907     public static final int SENSOR_REFERENCE_ILLUMINANT1_DAYLIGHT_FLUORESCENT = 12;
908 
909     /**
910      * <p>N 4600 - 5400K</p>
911      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
912      */
913     public static final int SENSOR_REFERENCE_ILLUMINANT1_DAY_WHITE_FLUORESCENT = 13;
914 
915     /**
916      * <p>W 3900 - 4500K</p>
917      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
918      */
919     public static final int SENSOR_REFERENCE_ILLUMINANT1_COOL_WHITE_FLUORESCENT = 14;
920 
921     /**
922      * <p>WW 3200 - 3700K</p>
923      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
924      */
925     public static final int SENSOR_REFERENCE_ILLUMINANT1_WHITE_FLUORESCENT = 15;
926 
927     /**
928      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
929      */
930     public static final int SENSOR_REFERENCE_ILLUMINANT1_STANDARD_A = 17;
931 
932     /**
933      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
934      */
935     public static final int SENSOR_REFERENCE_ILLUMINANT1_STANDARD_B = 18;
936 
937     /**
938      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
939      */
940     public static final int SENSOR_REFERENCE_ILLUMINANT1_STANDARD_C = 19;
941 
942     /**
943      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
944      */
945     public static final int SENSOR_REFERENCE_ILLUMINANT1_D55 = 20;
946 
947     /**
948      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
949      */
950     public static final int SENSOR_REFERENCE_ILLUMINANT1_D65 = 21;
951 
952     /**
953      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
954      */
955     public static final int SENSOR_REFERENCE_ILLUMINANT1_D75 = 22;
956 
957     /**
958      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
959      */
960     public static final int SENSOR_REFERENCE_ILLUMINANT1_D50 = 23;
961 
962     /**
963      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
964      */
965     public static final int SENSOR_REFERENCE_ILLUMINANT1_ISO_STUDIO_TUNGSTEN = 24;
966 
967     //
968     // Enumeration values for CameraCharacteristics#LED_AVAILABLE_LEDS
969     //
970 
971     /**
972      * <p>android.led.transmit control is used.</p>
973      * @see CameraCharacteristics#LED_AVAILABLE_LEDS
974      * @hide
975      */
976     public static final int LED_AVAILABLE_LEDS_TRANSMIT = 0;
977 
978     //
979     // Enumeration values for CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
980     //
981 
982     /**
983      * <p>This camera device does not have enough capabilities to qualify as a <code>FULL</code> device or
984      * better.</p>
985      * <p>Only the stream configurations listed in the <code>LEGACY</code> and <code>LIMITED</code> tables in the
986      * {@link android.hardware.camera2.CameraDevice#createCaptureSession createCaptureSession} documentation are guaranteed to be supported.</p>
987      * <p>All <code>LIMITED</code> devices support the <code>BACKWARDS_COMPATIBLE</code> capability, indicating basic
988      * support for color image capture. The only exception is that the device may
989      * alternatively support only the <code>DEPTH_OUTPUT</code> capability, if it can only output depth
990      * measurements and not color images.</p>
991      * <p><code>LIMITED</code> devices and above require the use of {@link CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER android.control.aePrecaptureTrigger}
992      * to lock exposure metering (and calculate flash power, for cameras with flash) before
993      * capturing a high-quality still image.</p>
994      * <p>A <code>LIMITED</code> device that only lists the <code>BACKWARDS_COMPATIBLE</code> capability is only
995      * required to support full-automatic operation and post-processing (<code>OFF</code> is not
996      * supported for {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode}, {@link CaptureRequest#CONTROL_AF_MODE android.control.afMode}, or
997      * {@link CaptureRequest#CONTROL_AWB_MODE android.control.awbMode})</p>
998      * <p>Additional capabilities may optionally be supported by a <code>LIMITED</code>-level device, and
999      * can be checked for in {@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES android.request.availableCapabilities}.</p>
1000      *
1001      * @see CaptureRequest#CONTROL_AE_MODE
1002      * @see CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
1003      * @see CaptureRequest#CONTROL_AF_MODE
1004      * @see CaptureRequest#CONTROL_AWB_MODE
1005      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
1006      * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
1007      */
1008     public static final int INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED = 0;
1009 
1010     /**
1011      * <p>This camera device is capable of supporting advanced imaging applications.</p>
1012      * <p>The stream configurations listed in the <code>FULL</code>, <code>LEGACY</code> and <code>LIMITED</code> tables in the
1013      * {@link android.hardware.camera2.CameraDevice#createCaptureSession createCaptureSession} documentation are guaranteed to be supported.</p>
1014      * <p>A <code>FULL</code> device will support below capabilities:</p>
1015      * <ul>
1016      * <li><code>BURST_CAPTURE</code> capability ({@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES android.request.availableCapabilities} contains
1017      *   <code>BURST_CAPTURE</code>)</li>
1018      * <li>Per frame control ({@link CameraCharacteristics#SYNC_MAX_LATENCY android.sync.maxLatency} <code>==</code> PER_FRAME_CONTROL)</li>
1019      * <li>Manual sensor control ({@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES android.request.availableCapabilities} contains <code>MANUAL_SENSOR</code>)</li>
1020      * <li>Manual post-processing control ({@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES android.request.availableCapabilities} contains
1021      *   <code>MANUAL_POST_PROCESSING</code>)</li>
1022      * <li>The required exposure time range defined in {@link CameraCharacteristics#SENSOR_INFO_EXPOSURE_TIME_RANGE android.sensor.info.exposureTimeRange}</li>
1023      * <li>The required maxFrameDuration defined in {@link CameraCharacteristics#SENSOR_INFO_MAX_FRAME_DURATION android.sensor.info.maxFrameDuration}</li>
1024      * </ul>
1025      * <p>Note:
1026      * Pre-API level 23, FULL devices also supported arbitrary cropping region
1027      * ({@link CameraCharacteristics#SCALER_CROPPING_TYPE android.scaler.croppingType} <code>== FREEFORM</code>); this requirement was relaxed in API level
1028      * 23, and <code>FULL</code> devices may only support <code>CENTERED</code> cropping.</p>
1029      *
1030      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
1031      * @see CameraCharacteristics#SCALER_CROPPING_TYPE
1032      * @see CameraCharacteristics#SENSOR_INFO_EXPOSURE_TIME_RANGE
1033      * @see CameraCharacteristics#SENSOR_INFO_MAX_FRAME_DURATION
1034      * @see CameraCharacteristics#SYNC_MAX_LATENCY
1035      * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
1036      */
1037     public static final int INFO_SUPPORTED_HARDWARE_LEVEL_FULL = 1;
1038 
1039     /**
1040      * <p>This camera device is running in backward compatibility mode.</p>
1041      * <p>Only the stream configurations listed in the <code>LEGACY</code> table in the {@link android.hardware.camera2.CameraDevice#createCaptureSession createCaptureSession}
1042      * documentation are supported.</p>
1043      * <p>A <code>LEGACY</code> device does not support per-frame control, manual sensor control, manual
1044      * post-processing, arbitrary cropping regions, and has relaxed performance constraints.
1045      * No additional capabilities beyond <code>BACKWARD_COMPATIBLE</code> will ever be listed by a
1046      * <code>LEGACY</code> device in {@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES android.request.availableCapabilities}.</p>
1047      * <p>In addition, the {@link CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER android.control.aePrecaptureTrigger} is not functional on <code>LEGACY</code>
1048      * devices. Instead, every request that includes a JPEG-format output target is treated
1049      * as triggering a still capture, internally executing a precapture trigger.  This may
1050      * fire the flash for flash power metering during precapture, and then fire the flash
1051      * for the final capture, if a flash is available on the device and the AE mode is set to
1052      * enable the flash.</p>
1053      *
1054      * @see CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
1055      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
1056      * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
1057      */
1058     public static final int INFO_SUPPORTED_HARDWARE_LEVEL_LEGACY = 2;
1059 
1060     /**
1061      * <p>This camera device is capable of YUV reprocessing and RAW data capture, in addition to
1062      * FULL-level capabilities.</p>
1063      * <p>The stream configurations listed in the <code>LEVEL_3</code>, <code>RAW</code>, <code>FULL</code>, <code>LEGACY</code> and
1064      * <code>LIMITED</code> tables in the {@link android.hardware.camera2.CameraDevice#createCaptureSession createCaptureSession}
1065      * documentation are guaranteed to be supported.</p>
1066      * <p>The following additional capabilities are guaranteed to be supported:</p>
1067      * <ul>
1068      * <li><code>YUV_REPROCESSING</code> capability ({@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES android.request.availableCapabilities} contains
1069      *   <code>YUV_REPROCESSING</code>)</li>
1070      * <li><code>RAW</code> capability ({@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES android.request.availableCapabilities} contains
1071      *   <code>RAW</code>)</li>
1072      * </ul>
1073      *
1074      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
1075      * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
1076      */
1077     public static final int INFO_SUPPORTED_HARDWARE_LEVEL_3 = 3;
1078 
1079     //
1080     // Enumeration values for CameraCharacteristics#SYNC_MAX_LATENCY
1081     //
1082 
1083     /**
1084      * <p>Every frame has the requests immediately applied.</p>
1085      * <p>Changing controls over multiple requests one after another will
1086      * produce results that have those controls applied atomically
1087      * each frame.</p>
1088      * <p>All FULL capability devices will have this as their maxLatency.</p>
1089      * @see CameraCharacteristics#SYNC_MAX_LATENCY
1090      */
1091     public static final int SYNC_MAX_LATENCY_PER_FRAME_CONTROL = 0;
1092 
1093     /**
1094      * <p>Each new frame has some subset (potentially the entire set)
1095      * of the past requests applied to the camera settings.</p>
1096      * <p>By submitting a series of identical requests, the camera device
1097      * will eventually have the camera settings applied, but it is
1098      * unknown when that exact point will be.</p>
1099      * <p>All LEGACY capability devices will have this as their maxLatency.</p>
1100      * @see CameraCharacteristics#SYNC_MAX_LATENCY
1101      */
1102     public static final int SYNC_MAX_LATENCY_UNKNOWN = -1;
1103 
1104     //
1105     // Enumeration values for CaptureRequest#COLOR_CORRECTION_MODE
1106     //
1107 
1108     /**
1109      * <p>Use the {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform} matrix
1110      * and {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} to do color conversion.</p>
1111      * <p>All advanced white balance adjustments (not specified
1112      * by our white balance pipeline) must be disabled.</p>
1113      * <p>If AWB is enabled with <code>{@link CaptureRequest#CONTROL_AWB_MODE android.control.awbMode} != OFF</code>, then
1114      * TRANSFORM_MATRIX is ignored. The camera device will override
1115      * this value to either FAST or HIGH_QUALITY.</p>
1116      *
1117      * @see CaptureRequest#COLOR_CORRECTION_GAINS
1118      * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
1119      * @see CaptureRequest#CONTROL_AWB_MODE
1120      * @see CaptureRequest#COLOR_CORRECTION_MODE
1121      */
1122     public static final int COLOR_CORRECTION_MODE_TRANSFORM_MATRIX = 0;
1123 
1124     /**
1125      * <p>Color correction processing must not slow down
1126      * capture rate relative to sensor raw output.</p>
1127      * <p>Advanced white balance adjustments above and beyond
1128      * the specified white balance pipeline may be applied.</p>
1129      * <p>If AWB is enabled with <code>{@link CaptureRequest#CONTROL_AWB_MODE android.control.awbMode} != OFF</code>, then
1130      * the camera device uses the last frame's AWB values
1131      * (or defaults if AWB has never been run).</p>
1132      *
1133      * @see CaptureRequest#CONTROL_AWB_MODE
1134      * @see CaptureRequest#COLOR_CORRECTION_MODE
1135      */
1136     public static final int COLOR_CORRECTION_MODE_FAST = 1;
1137 
1138     /**
1139      * <p>Color correction processing operates at improved
1140      * quality but the capture rate might be reduced (relative to sensor
1141      * raw output rate)</p>
1142      * <p>Advanced white balance adjustments above and beyond
1143      * the specified white balance pipeline may be applied.</p>
1144      * <p>If AWB is enabled with <code>{@link CaptureRequest#CONTROL_AWB_MODE android.control.awbMode} != OFF</code>, then
1145      * the camera device uses the last frame's AWB values
1146      * (or defaults if AWB has never been run).</p>
1147      *
1148      * @see CaptureRequest#CONTROL_AWB_MODE
1149      * @see CaptureRequest#COLOR_CORRECTION_MODE
1150      */
1151     public static final int COLOR_CORRECTION_MODE_HIGH_QUALITY = 2;
1152 
1153     //
1154     // Enumeration values for CaptureRequest#COLOR_CORRECTION_ABERRATION_MODE
1155     //
1156 
1157     /**
1158      * <p>No aberration correction is applied.</p>
1159      * @see CaptureRequest#COLOR_CORRECTION_ABERRATION_MODE
1160      */
1161     public static final int COLOR_CORRECTION_ABERRATION_MODE_OFF = 0;
1162 
1163     /**
1164      * <p>Aberration correction will not slow down capture rate
1165      * relative to sensor raw output.</p>
1166      * @see CaptureRequest#COLOR_CORRECTION_ABERRATION_MODE
1167      */
1168     public static final int COLOR_CORRECTION_ABERRATION_MODE_FAST = 1;
1169 
1170     /**
1171      * <p>Aberration correction operates at improved quality but the capture rate might be
1172      * reduced (relative to sensor raw output rate)</p>
1173      * @see CaptureRequest#COLOR_CORRECTION_ABERRATION_MODE
1174      */
1175     public static final int COLOR_CORRECTION_ABERRATION_MODE_HIGH_QUALITY = 2;
1176 
1177     //
1178     // Enumeration values for CaptureRequest#CONTROL_AE_ANTIBANDING_MODE
1179     //
1180 
1181     /**
1182      * <p>The camera device will not adjust exposure duration to
1183      * avoid banding problems.</p>
1184      * @see CaptureRequest#CONTROL_AE_ANTIBANDING_MODE
1185      */
1186     public static final int CONTROL_AE_ANTIBANDING_MODE_OFF = 0;
1187 
1188     /**
1189      * <p>The camera device will adjust exposure duration to
1190      * avoid banding problems with 50Hz illumination sources.</p>
1191      * @see CaptureRequest#CONTROL_AE_ANTIBANDING_MODE
1192      */
1193     public static final int CONTROL_AE_ANTIBANDING_MODE_50HZ = 1;
1194 
1195     /**
1196      * <p>The camera device will adjust exposure duration to
1197      * avoid banding problems with 60Hz illumination
1198      * sources.</p>
1199      * @see CaptureRequest#CONTROL_AE_ANTIBANDING_MODE
1200      */
1201     public static final int CONTROL_AE_ANTIBANDING_MODE_60HZ = 2;
1202 
1203     /**
1204      * <p>The camera device will automatically adapt its
1205      * antibanding routine to the current illumination
1206      * condition. This is the default mode if AUTO is
1207      * available on given camera device.</p>
1208      * @see CaptureRequest#CONTROL_AE_ANTIBANDING_MODE
1209      */
1210     public static final int CONTROL_AE_ANTIBANDING_MODE_AUTO = 3;
1211 
1212     //
1213     // Enumeration values for CaptureRequest#CONTROL_AE_MODE
1214     //
1215 
1216     /**
1217      * <p>The camera device's autoexposure routine is disabled.</p>
1218      * <p>The application-selected {@link CaptureRequest#SENSOR_EXPOSURE_TIME android.sensor.exposureTime},
1219      * {@link CaptureRequest#SENSOR_SENSITIVITY android.sensor.sensitivity} and
1220      * {@link CaptureRequest#SENSOR_FRAME_DURATION android.sensor.frameDuration} are used by the camera
1221      * device, along with android.flash.* fields, if there's
1222      * a flash unit for this camera device.</p>
1223      * <p>Note that auto-white balance (AWB) and auto-focus (AF)
1224      * behavior is device dependent when AE is in OFF mode.
1225      * To have consistent behavior across different devices,
1226      * it is recommended to either set AWB and AF to OFF mode
1227      * or lock AWB and AF before setting AE to OFF.
1228      * See {@link CaptureRequest#CONTROL_AWB_MODE android.control.awbMode}, {@link CaptureRequest#CONTROL_AF_MODE android.control.afMode},
1229      * {@link CaptureRequest#CONTROL_AWB_LOCK android.control.awbLock}, and {@link CaptureRequest#CONTROL_AF_TRIGGER android.control.afTrigger}
1230      * for more details.</p>
1231      * <p>LEGACY devices do not support the OFF mode and will
1232      * override attempts to use this value to ON.</p>
1233      *
1234      * @see CaptureRequest#CONTROL_AF_MODE
1235      * @see CaptureRequest#CONTROL_AF_TRIGGER
1236      * @see CaptureRequest#CONTROL_AWB_LOCK
1237      * @see CaptureRequest#CONTROL_AWB_MODE
1238      * @see CaptureRequest#SENSOR_EXPOSURE_TIME
1239      * @see CaptureRequest#SENSOR_FRAME_DURATION
1240      * @see CaptureRequest#SENSOR_SENSITIVITY
1241      * @see CaptureRequest#CONTROL_AE_MODE
1242      */
1243     public static final int CONTROL_AE_MODE_OFF = 0;
1244 
1245     /**
1246      * <p>The camera device's autoexposure routine is active,
1247      * with no flash control.</p>
1248      * <p>The application's values for
1249      * {@link CaptureRequest#SENSOR_EXPOSURE_TIME android.sensor.exposureTime},
1250      * {@link CaptureRequest#SENSOR_SENSITIVITY android.sensor.sensitivity}, and
1251      * {@link CaptureRequest#SENSOR_FRAME_DURATION android.sensor.frameDuration} are ignored. The
1252      * application has control over the various
1253      * android.flash.* fields.</p>
1254      *
1255      * @see CaptureRequest#SENSOR_EXPOSURE_TIME
1256      * @see CaptureRequest#SENSOR_FRAME_DURATION
1257      * @see CaptureRequest#SENSOR_SENSITIVITY
1258      * @see CaptureRequest#CONTROL_AE_MODE
1259      */
1260     public static final int CONTROL_AE_MODE_ON = 1;
1261 
1262     /**
1263      * <p>Like ON, except that the camera device also controls
1264      * the camera's flash unit, firing it in low-light
1265      * conditions.</p>
1266      * <p>The flash may be fired during a precapture sequence
1267      * (triggered by {@link CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER android.control.aePrecaptureTrigger}) and
1268      * may be fired for captures for which the
1269      * {@link CaptureRequest#CONTROL_CAPTURE_INTENT android.control.captureIntent} field is set to
1270      * STILL_CAPTURE</p>
1271      *
1272      * @see CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
1273      * @see CaptureRequest#CONTROL_CAPTURE_INTENT
1274      * @see CaptureRequest#CONTROL_AE_MODE
1275      */
1276     public static final int CONTROL_AE_MODE_ON_AUTO_FLASH = 2;
1277 
1278     /**
1279      * <p>Like ON, except that the camera device also controls
1280      * the camera's flash unit, always firing it for still
1281      * captures.</p>
1282      * <p>The flash may be fired during a precapture sequence
1283      * (triggered by {@link CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER android.control.aePrecaptureTrigger}) and
1284      * will always be fired for captures for which the
1285      * {@link CaptureRequest#CONTROL_CAPTURE_INTENT android.control.captureIntent} field is set to
1286      * STILL_CAPTURE</p>
1287      *
1288      * @see CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
1289      * @see CaptureRequest#CONTROL_CAPTURE_INTENT
1290      * @see CaptureRequest#CONTROL_AE_MODE
1291      */
1292     public static final int CONTROL_AE_MODE_ON_ALWAYS_FLASH = 3;
1293 
1294     /**
1295      * <p>Like ON_AUTO_FLASH, but with automatic red eye
1296      * reduction.</p>
1297      * <p>If deemed necessary by the camera device, a red eye
1298      * reduction flash will fire during the precapture
1299      * sequence.</p>
1300      * @see CaptureRequest#CONTROL_AE_MODE
1301      */
1302     public static final int CONTROL_AE_MODE_ON_AUTO_FLASH_REDEYE = 4;
1303 
1304     //
1305     // Enumeration values for CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
1306     //
1307 
1308     /**
1309      * <p>The trigger is idle.</p>
1310      * @see CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
1311      */
1312     public static final int CONTROL_AE_PRECAPTURE_TRIGGER_IDLE = 0;
1313 
1314     /**
1315      * <p>The precapture metering sequence will be started
1316      * by the camera device.</p>
1317      * <p>The exact effect of the precapture trigger depends on
1318      * the current AE mode and state.</p>
1319      * @see CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
1320      */
1321     public static final int CONTROL_AE_PRECAPTURE_TRIGGER_START = 1;
1322 
1323     /**
1324      * <p>The camera device will cancel any currently active or completed
1325      * precapture metering sequence, the auto-exposure routine will return to its
1326      * initial state.</p>
1327      * @see CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
1328      */
1329     public static final int CONTROL_AE_PRECAPTURE_TRIGGER_CANCEL = 2;
1330 
1331     //
1332     // Enumeration values for CaptureRequest#CONTROL_AF_MODE
1333     //
1334 
1335     /**
1336      * <p>The auto-focus routine does not control the lens;
1337      * {@link CaptureRequest#LENS_FOCUS_DISTANCE android.lens.focusDistance} is controlled by the
1338      * application.</p>
1339      *
1340      * @see CaptureRequest#LENS_FOCUS_DISTANCE
1341      * @see CaptureRequest#CONTROL_AF_MODE
1342      */
1343     public static final int CONTROL_AF_MODE_OFF = 0;
1344 
1345     /**
1346      * <p>Basic automatic focus mode.</p>
1347      * <p>In this mode, the lens does not move unless
1348      * the autofocus trigger action is called. When that trigger
1349      * is activated, AF will transition to ACTIVE_SCAN, then to
1350      * the outcome of the scan (FOCUSED or NOT_FOCUSED).</p>
1351      * <p>Always supported if lens is not fixed focus.</p>
1352      * <p>Use {@link CameraCharacteristics#LENS_INFO_MINIMUM_FOCUS_DISTANCE android.lens.info.minimumFocusDistance} to determine if lens
1353      * is fixed-focus.</p>
1354      * <p>Triggering AF_CANCEL resets the lens position to default,
1355      * and sets the AF state to INACTIVE.</p>
1356      *
1357      * @see CameraCharacteristics#LENS_INFO_MINIMUM_FOCUS_DISTANCE
1358      * @see CaptureRequest#CONTROL_AF_MODE
1359      */
1360     public static final int CONTROL_AF_MODE_AUTO = 1;
1361 
1362     /**
1363      * <p>Close-up focusing mode.</p>
1364      * <p>In this mode, the lens does not move unless the
1365      * autofocus trigger action is called. When that trigger is
1366      * activated, AF will transition to ACTIVE_SCAN, then to
1367      * the outcome of the scan (FOCUSED or NOT_FOCUSED). This
1368      * mode is optimized for focusing on objects very close to
1369      * the camera.</p>
1370      * <p>When that trigger is activated, AF will transition to
1371      * ACTIVE_SCAN, then to the outcome of the scan (FOCUSED or
1372      * NOT_FOCUSED). Triggering cancel AF resets the lens
1373      * position to default, and sets the AF state to
1374      * INACTIVE.</p>
1375      * @see CaptureRequest#CONTROL_AF_MODE
1376      */
1377     public static final int CONTROL_AF_MODE_MACRO = 2;
1378 
1379     /**
1380      * <p>In this mode, the AF algorithm modifies the lens
1381      * position continually to attempt to provide a
1382      * constantly-in-focus image stream.</p>
1383      * <p>The focusing behavior should be suitable for good quality
1384      * video recording; typically this means slower focus
1385      * movement and no overshoots. When the AF trigger is not
1386      * involved, the AF algorithm should start in INACTIVE state,
1387      * and then transition into PASSIVE_SCAN and PASSIVE_FOCUSED
1388      * states as appropriate. When the AF trigger is activated,
1389      * the algorithm should immediately transition into
1390      * AF_FOCUSED or AF_NOT_FOCUSED as appropriate, and lock the
1391      * lens position until a cancel AF trigger is received.</p>
1392      * <p>Once cancel is received, the algorithm should transition
1393      * back to INACTIVE and resume passive scan. Note that this
1394      * behavior is not identical to CONTINUOUS_PICTURE, since an
1395      * ongoing PASSIVE_SCAN must immediately be
1396      * canceled.</p>
1397      * @see CaptureRequest#CONTROL_AF_MODE
1398      */
1399     public static final int CONTROL_AF_MODE_CONTINUOUS_VIDEO = 3;
1400 
1401     /**
1402      * <p>In this mode, the AF algorithm modifies the lens
1403      * position continually to attempt to provide a
1404      * constantly-in-focus image stream.</p>
1405      * <p>The focusing behavior should be suitable for still image
1406      * capture; typically this means focusing as fast as
1407      * possible. When the AF trigger is not involved, the AF
1408      * algorithm should start in INACTIVE state, and then
1409      * transition into PASSIVE_SCAN and PASSIVE_FOCUSED states as
1410      * appropriate as it attempts to maintain focus. When the AF
1411      * trigger is activated, the algorithm should finish its
1412      * PASSIVE_SCAN if active, and then transition into
1413      * AF_FOCUSED or AF_NOT_FOCUSED as appropriate, and lock the
1414      * lens position until a cancel AF trigger is received.</p>
1415      * <p>When the AF cancel trigger is activated, the algorithm
1416      * should transition back to INACTIVE and then act as if it
1417      * has just been started.</p>
1418      * @see CaptureRequest#CONTROL_AF_MODE
1419      */
1420     public static final int CONTROL_AF_MODE_CONTINUOUS_PICTURE = 4;
1421 
1422     /**
1423      * <p>Extended depth of field (digital focus) mode.</p>
1424      * <p>The camera device will produce images with an extended
1425      * depth of field automatically; no special focusing
1426      * operations need to be done before taking a picture.</p>
1427      * <p>AF triggers are ignored, and the AF state will always be
1428      * INACTIVE.</p>
1429      * @see CaptureRequest#CONTROL_AF_MODE
1430      */
1431     public static final int CONTROL_AF_MODE_EDOF = 5;
1432 
1433     //
1434     // Enumeration values for CaptureRequest#CONTROL_AF_TRIGGER
1435     //
1436 
1437     /**
1438      * <p>The trigger is idle.</p>
1439      * @see CaptureRequest#CONTROL_AF_TRIGGER
1440      */
1441     public static final int CONTROL_AF_TRIGGER_IDLE = 0;
1442 
1443     /**
1444      * <p>Autofocus will trigger now.</p>
1445      * @see CaptureRequest#CONTROL_AF_TRIGGER
1446      */
1447     public static final int CONTROL_AF_TRIGGER_START = 1;
1448 
1449     /**
1450      * <p>Autofocus will return to its initial
1451      * state, and cancel any currently active trigger.</p>
1452      * @see CaptureRequest#CONTROL_AF_TRIGGER
1453      */
1454     public static final int CONTROL_AF_TRIGGER_CANCEL = 2;
1455 
1456     //
1457     // Enumeration values for CaptureRequest#CONTROL_AWB_MODE
1458     //
1459 
1460     /**
1461      * <p>The camera device's auto-white balance routine is disabled.</p>
1462      * <p>The application-selected color transform matrix
1463      * ({@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}) and gains
1464      * ({@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains}) are used by the camera
1465      * device for manual white balance control.</p>
1466      *
1467      * @see CaptureRequest#COLOR_CORRECTION_GAINS
1468      * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
1469      * @see CaptureRequest#CONTROL_AWB_MODE
1470      */
1471     public static final int CONTROL_AWB_MODE_OFF = 0;
1472 
1473     /**
1474      * <p>The camera device's auto-white balance routine is active.</p>
1475      * <p>The application's values for {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}
1476      * and {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} are ignored.
1477      * For devices that support the MANUAL_POST_PROCESSING capability, the
1478      * values used by the camera device for the transform and gains
1479      * will be available in the capture result for this request.</p>
1480      *
1481      * @see CaptureRequest#COLOR_CORRECTION_GAINS
1482      * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
1483      * @see CaptureRequest#CONTROL_AWB_MODE
1484      */
1485     public static final int CONTROL_AWB_MODE_AUTO = 1;
1486 
1487     /**
1488      * <p>The camera device's auto-white balance routine is disabled;
1489      * the camera device uses incandescent light as the assumed scene
1490      * illumination for white balance.</p>
1491      * <p>While the exact white balance transforms are up to the
1492      * camera device, they will approximately match the CIE
1493      * standard illuminant A.</p>
1494      * <p>The application's values for {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}
1495      * and {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} are ignored.
1496      * For devices that support the MANUAL_POST_PROCESSING capability, the
1497      * values used by the camera device for the transform and gains
1498      * will be available in the capture result for this request.</p>
1499      *
1500      * @see CaptureRequest#COLOR_CORRECTION_GAINS
1501      * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
1502      * @see CaptureRequest#CONTROL_AWB_MODE
1503      */
1504     public static final int CONTROL_AWB_MODE_INCANDESCENT = 2;
1505 
1506     /**
1507      * <p>The camera device's auto-white balance routine is disabled;
1508      * the camera device uses fluorescent light as the assumed scene
1509      * illumination for white balance.</p>
1510      * <p>While the exact white balance transforms are up to the
1511      * camera device, they will approximately match the CIE
1512      * standard illuminant F2.</p>
1513      * <p>The application's values for {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}
1514      * and {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} are ignored.
1515      * For devices that support the MANUAL_POST_PROCESSING capability, the
1516      * values used by the camera device for the transform and gains
1517      * will be available in the capture result for this request.</p>
1518      *
1519      * @see CaptureRequest#COLOR_CORRECTION_GAINS
1520      * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
1521      * @see CaptureRequest#CONTROL_AWB_MODE
1522      */
1523     public static final int CONTROL_AWB_MODE_FLUORESCENT = 3;
1524 
1525     /**
1526      * <p>The camera device's auto-white balance routine is disabled;
1527      * the camera device uses warm fluorescent light as the assumed scene
1528      * illumination for white balance.</p>
1529      * <p>While the exact white balance transforms are up to the
1530      * camera device, they will approximately match the CIE
1531      * standard illuminant F4.</p>
1532      * <p>The application's values for {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}
1533      * and {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} are ignored.
1534      * For devices that support the MANUAL_POST_PROCESSING capability, the
1535      * values used by the camera device for the transform and gains
1536      * will be available in the capture result for this request.</p>
1537      *
1538      * @see CaptureRequest#COLOR_CORRECTION_GAINS
1539      * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
1540      * @see CaptureRequest#CONTROL_AWB_MODE
1541      */
1542     public static final int CONTROL_AWB_MODE_WARM_FLUORESCENT = 4;
1543 
1544     /**
1545      * <p>The camera device's auto-white balance routine is disabled;
1546      * the camera device uses daylight light as the assumed scene
1547      * illumination for white balance.</p>
1548      * <p>While the exact white balance transforms are up to the
1549      * camera device, they will approximately match the CIE
1550      * standard illuminant D65.</p>
1551      * <p>The application's values for {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}
1552      * and {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} are ignored.
1553      * For devices that support the MANUAL_POST_PROCESSING capability, the
1554      * values used by the camera device for the transform and gains
1555      * will be available in the capture result for this request.</p>
1556      *
1557      * @see CaptureRequest#COLOR_CORRECTION_GAINS
1558      * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
1559      * @see CaptureRequest#CONTROL_AWB_MODE
1560      */
1561     public static final int CONTROL_AWB_MODE_DAYLIGHT = 5;
1562 
1563     /**
1564      * <p>The camera device's auto-white balance routine is disabled;
1565      * the camera device uses cloudy daylight light as the assumed scene
1566      * illumination for white balance.</p>
1567      * <p>The application's values for {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}
1568      * and {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} are ignored.
1569      * For devices that support the MANUAL_POST_PROCESSING capability, the
1570      * values used by the camera device for the transform and gains
1571      * will be available in the capture result for this request.</p>
1572      *
1573      * @see CaptureRequest#COLOR_CORRECTION_GAINS
1574      * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
1575      * @see CaptureRequest#CONTROL_AWB_MODE
1576      */
1577     public static final int CONTROL_AWB_MODE_CLOUDY_DAYLIGHT = 6;
1578 
1579     /**
1580      * <p>The camera device's auto-white balance routine is disabled;
1581      * the camera device uses twilight light as the assumed scene
1582      * illumination for white balance.</p>
1583      * <p>The application's values for {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}
1584      * and {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} are ignored.
1585      * For devices that support the MANUAL_POST_PROCESSING capability, the
1586      * values used by the camera device for the transform and gains
1587      * will be available in the capture result for this request.</p>
1588      *
1589      * @see CaptureRequest#COLOR_CORRECTION_GAINS
1590      * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
1591      * @see CaptureRequest#CONTROL_AWB_MODE
1592      */
1593     public static final int CONTROL_AWB_MODE_TWILIGHT = 7;
1594 
1595     /**
1596      * <p>The camera device's auto-white balance routine is disabled;
1597      * the camera device uses shade light as the assumed scene
1598      * illumination for white balance.</p>
1599      * <p>The application's values for {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}
1600      * and {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} are ignored.
1601      * For devices that support the MANUAL_POST_PROCESSING capability, the
1602      * values used by the camera device for the transform and gains
1603      * will be available in the capture result for this request.</p>
1604      *
1605      * @see CaptureRequest#COLOR_CORRECTION_GAINS
1606      * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
1607      * @see CaptureRequest#CONTROL_AWB_MODE
1608      */
1609     public static final int CONTROL_AWB_MODE_SHADE = 8;
1610 
1611     //
1612     // Enumeration values for CaptureRequest#CONTROL_CAPTURE_INTENT
1613     //
1614 
1615     /**
1616      * <p>The goal of this request doesn't fall into the other
1617      * categories. The camera device will default to preview-like
1618      * behavior.</p>
1619      * @see CaptureRequest#CONTROL_CAPTURE_INTENT
1620      */
1621     public static final int CONTROL_CAPTURE_INTENT_CUSTOM = 0;
1622 
1623     /**
1624      * <p>This request is for a preview-like use case.</p>
1625      * <p>The precapture trigger may be used to start off a metering
1626      * w/flash sequence.</p>
1627      * @see CaptureRequest#CONTROL_CAPTURE_INTENT
1628      */
1629     public static final int CONTROL_CAPTURE_INTENT_PREVIEW = 1;
1630 
1631     /**
1632      * <p>This request is for a still capture-type
1633      * use case.</p>
1634      * <p>If the flash unit is under automatic control, it may fire as needed.</p>
1635      * @see CaptureRequest#CONTROL_CAPTURE_INTENT
1636      */
1637     public static final int CONTROL_CAPTURE_INTENT_STILL_CAPTURE = 2;
1638 
1639     /**
1640      * <p>This request is for a video recording
1641      * use case.</p>
1642      * @see CaptureRequest#CONTROL_CAPTURE_INTENT
1643      */
1644     public static final int CONTROL_CAPTURE_INTENT_VIDEO_RECORD = 3;
1645 
1646     /**
1647      * <p>This request is for a video snapshot (still
1648      * image while recording video) use case.</p>
1649      * <p>The camera device should take the highest-quality image
1650      * possible (given the other settings) without disrupting the
1651      * frame rate of video recording.  </p>
1652      * @see CaptureRequest#CONTROL_CAPTURE_INTENT
1653      */
1654     public static final int CONTROL_CAPTURE_INTENT_VIDEO_SNAPSHOT = 4;
1655 
1656     /**
1657      * <p>This request is for a ZSL usecase; the
1658      * application will stream full-resolution images and
1659      * reprocess one or several later for a final
1660      * capture.</p>
1661      * @see CaptureRequest#CONTROL_CAPTURE_INTENT
1662      */
1663     public static final int CONTROL_CAPTURE_INTENT_ZERO_SHUTTER_LAG = 5;
1664 
1665     /**
1666      * <p>This request is for manual capture use case where
1667      * the applications want to directly control the capture parameters.</p>
1668      * <p>For example, the application may wish to manually control
1669      * {@link CaptureRequest#SENSOR_EXPOSURE_TIME android.sensor.exposureTime}, {@link CaptureRequest#SENSOR_SENSITIVITY android.sensor.sensitivity}, etc.</p>
1670      *
1671      * @see CaptureRequest#SENSOR_EXPOSURE_TIME
1672      * @see CaptureRequest#SENSOR_SENSITIVITY
1673      * @see CaptureRequest#CONTROL_CAPTURE_INTENT
1674      */
1675     public static final int CONTROL_CAPTURE_INTENT_MANUAL = 6;
1676 
1677     //
1678     // Enumeration values for CaptureRequest#CONTROL_EFFECT_MODE
1679     //
1680 
1681     /**
1682      * <p>No color effect will be applied.</p>
1683      * @see CaptureRequest#CONTROL_EFFECT_MODE
1684      */
1685     public static final int CONTROL_EFFECT_MODE_OFF = 0;
1686 
1687     /**
1688      * <p>A "monocolor" effect where the image is mapped into
1689      * a single color.</p>
1690      * <p>This will typically be grayscale.</p>
1691      * @see CaptureRequest#CONTROL_EFFECT_MODE
1692      */
1693     public static final int CONTROL_EFFECT_MODE_MONO = 1;
1694 
1695     /**
1696      * <p>A "photo-negative" effect where the image's colors
1697      * are inverted.</p>
1698      * @see CaptureRequest#CONTROL_EFFECT_MODE
1699      */
1700     public static final int CONTROL_EFFECT_MODE_NEGATIVE = 2;
1701 
1702     /**
1703      * <p>A "solarisation" effect (Sabattier effect) where the
1704      * image is wholly or partially reversed in
1705      * tone.</p>
1706      * @see CaptureRequest#CONTROL_EFFECT_MODE
1707      */
1708     public static final int CONTROL_EFFECT_MODE_SOLARIZE = 3;
1709 
1710     /**
1711      * <p>A "sepia" effect where the image is mapped into warm
1712      * gray, red, and brown tones.</p>
1713      * @see CaptureRequest#CONTROL_EFFECT_MODE
1714      */
1715     public static final int CONTROL_EFFECT_MODE_SEPIA = 4;
1716 
1717     /**
1718      * <p>A "posterization" effect where the image uses
1719      * discrete regions of tone rather than a continuous
1720      * gradient of tones.</p>
1721      * @see CaptureRequest#CONTROL_EFFECT_MODE
1722      */
1723     public static final int CONTROL_EFFECT_MODE_POSTERIZE = 5;
1724 
1725     /**
1726      * <p>A "whiteboard" effect where the image is typically displayed
1727      * as regions of white, with black or grey details.</p>
1728      * @see CaptureRequest#CONTROL_EFFECT_MODE
1729      */
1730     public static final int CONTROL_EFFECT_MODE_WHITEBOARD = 6;
1731 
1732     /**
1733      * <p>A "blackboard" effect where the image is typically displayed
1734      * as regions of black, with white or grey details.</p>
1735      * @see CaptureRequest#CONTROL_EFFECT_MODE
1736      */
1737     public static final int CONTROL_EFFECT_MODE_BLACKBOARD = 7;
1738 
1739     /**
1740      * <p>An "aqua" effect where a blue hue is added to the image.</p>
1741      * @see CaptureRequest#CONTROL_EFFECT_MODE
1742      */
1743     public static final int CONTROL_EFFECT_MODE_AQUA = 8;
1744 
1745     //
1746     // Enumeration values for CaptureRequest#CONTROL_MODE
1747     //
1748 
1749     /**
1750      * <p>Full application control of pipeline.</p>
1751      * <p>All control by the device's metering and focusing (3A)
1752      * routines is disabled, and no other settings in
1753      * android.control.* have any effect, except that
1754      * {@link CaptureRequest#CONTROL_CAPTURE_INTENT android.control.captureIntent} may be used by the camera
1755      * device to select post-processing values for processing
1756      * blocks that do not allow for manual control, or are not
1757      * exposed by the camera API.</p>
1758      * <p>However, the camera device's 3A routines may continue to
1759      * collect statistics and update their internal state so that
1760      * when control is switched to AUTO mode, good control values
1761      * can be immediately applied.</p>
1762      *
1763      * @see CaptureRequest#CONTROL_CAPTURE_INTENT
1764      * @see CaptureRequest#CONTROL_MODE
1765      */
1766     public static final int CONTROL_MODE_OFF = 0;
1767 
1768     /**
1769      * <p>Use settings for each individual 3A routine.</p>
1770      * <p>Manual control of capture parameters is disabled. All
1771      * controls in android.control.* besides sceneMode take
1772      * effect.</p>
1773      * @see CaptureRequest#CONTROL_MODE
1774      */
1775     public static final int CONTROL_MODE_AUTO = 1;
1776 
1777     /**
1778      * <p>Use a specific scene mode.</p>
1779      * <p>Enabling this disables control.aeMode, control.awbMode and
1780      * control.afMode controls; the camera device will ignore
1781      * those settings while USE_SCENE_MODE is active (except for
1782      * FACE_PRIORITY scene mode). Other control entries are still active.
1783      * This setting can only be used if scene mode is supported (i.e.
1784      * {@link CameraCharacteristics#CONTROL_AVAILABLE_SCENE_MODES android.control.availableSceneModes}
1785      * contain some modes other than DISABLED).</p>
1786      *
1787      * @see CameraCharacteristics#CONTROL_AVAILABLE_SCENE_MODES
1788      * @see CaptureRequest#CONTROL_MODE
1789      */
1790     public static final int CONTROL_MODE_USE_SCENE_MODE = 2;
1791 
1792     /**
1793      * <p>Same as OFF mode, except that this capture will not be
1794      * used by camera device background auto-exposure, auto-white balance and
1795      * auto-focus algorithms (3A) to update their statistics.</p>
1796      * <p>Specifically, the 3A routines are locked to the last
1797      * values set from a request with AUTO, OFF, or
1798      * USE_SCENE_MODE, and any statistics or state updates
1799      * collected from manual captures with OFF_KEEP_STATE will be
1800      * discarded by the camera device.</p>
1801      * @see CaptureRequest#CONTROL_MODE
1802      */
1803     public static final int CONTROL_MODE_OFF_KEEP_STATE = 3;
1804 
1805     //
1806     // Enumeration values for CaptureRequest#CONTROL_SCENE_MODE
1807     //
1808 
1809     /**
1810      * <p>Indicates that no scene modes are set for a given capture request.</p>
1811      * @see CaptureRequest#CONTROL_SCENE_MODE
1812      */
1813     public static final int CONTROL_SCENE_MODE_DISABLED = 0;
1814 
1815     /**
1816      * <p>If face detection support exists, use face
1817      * detection data for auto-focus, auto-white balance, and
1818      * auto-exposure routines.</p>
1819      * <p>If face detection statistics are disabled
1820      * (i.e. {@link CaptureRequest#STATISTICS_FACE_DETECT_MODE android.statistics.faceDetectMode} is set to OFF),
1821      * this should still operate correctly (but will not return
1822      * face detection statistics to the framework).</p>
1823      * <p>Unlike the other scene modes, {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode},
1824      * {@link CaptureRequest#CONTROL_AWB_MODE android.control.awbMode}, and {@link CaptureRequest#CONTROL_AF_MODE android.control.afMode}
1825      * remain active when FACE_PRIORITY is set.</p>
1826      *
1827      * @see CaptureRequest#CONTROL_AE_MODE
1828      * @see CaptureRequest#CONTROL_AF_MODE
1829      * @see CaptureRequest#CONTROL_AWB_MODE
1830      * @see CaptureRequest#STATISTICS_FACE_DETECT_MODE
1831      * @see CaptureRequest#CONTROL_SCENE_MODE
1832      */
1833     public static final int CONTROL_SCENE_MODE_FACE_PRIORITY = 1;
1834 
1835     /**
1836      * <p>Optimized for photos of quickly moving objects.</p>
1837      * <p>Similar to SPORTS.</p>
1838      * @see CaptureRequest#CONTROL_SCENE_MODE
1839      */
1840     public static final int CONTROL_SCENE_MODE_ACTION = 2;
1841 
1842     /**
1843      * <p>Optimized for still photos of people.</p>
1844      * @see CaptureRequest#CONTROL_SCENE_MODE
1845      */
1846     public static final int CONTROL_SCENE_MODE_PORTRAIT = 3;
1847 
1848     /**
1849      * <p>Optimized for photos of distant macroscopic objects.</p>
1850      * @see CaptureRequest#CONTROL_SCENE_MODE
1851      */
1852     public static final int CONTROL_SCENE_MODE_LANDSCAPE = 4;
1853 
1854     /**
1855      * <p>Optimized for low-light settings.</p>
1856      * @see CaptureRequest#CONTROL_SCENE_MODE
1857      */
1858     public static final int CONTROL_SCENE_MODE_NIGHT = 5;
1859 
1860     /**
1861      * <p>Optimized for still photos of people in low-light
1862      * settings.</p>
1863      * @see CaptureRequest#CONTROL_SCENE_MODE
1864      */
1865     public static final int CONTROL_SCENE_MODE_NIGHT_PORTRAIT = 6;
1866 
1867     /**
1868      * <p>Optimized for dim, indoor settings where flash must
1869      * remain off.</p>
1870      * @see CaptureRequest#CONTROL_SCENE_MODE
1871      */
1872     public static final int CONTROL_SCENE_MODE_THEATRE = 7;
1873 
1874     /**
1875      * <p>Optimized for bright, outdoor beach settings.</p>
1876      * @see CaptureRequest#CONTROL_SCENE_MODE
1877      */
1878     public static final int CONTROL_SCENE_MODE_BEACH = 8;
1879 
1880     /**
1881      * <p>Optimized for bright, outdoor settings containing snow.</p>
1882      * @see CaptureRequest#CONTROL_SCENE_MODE
1883      */
1884     public static final int CONTROL_SCENE_MODE_SNOW = 9;
1885 
1886     /**
1887      * <p>Optimized for scenes of the setting sun.</p>
1888      * @see CaptureRequest#CONTROL_SCENE_MODE
1889      */
1890     public static final int CONTROL_SCENE_MODE_SUNSET = 10;
1891 
1892     /**
1893      * <p>Optimized to avoid blurry photos due to small amounts of
1894      * device motion (for example: due to hand shake).</p>
1895      * @see CaptureRequest#CONTROL_SCENE_MODE
1896      */
1897     public static final int CONTROL_SCENE_MODE_STEADYPHOTO = 11;
1898 
1899     /**
1900      * <p>Optimized for nighttime photos of fireworks.</p>
1901      * @see CaptureRequest#CONTROL_SCENE_MODE
1902      */
1903     public static final int CONTROL_SCENE_MODE_FIREWORKS = 12;
1904 
1905     /**
1906      * <p>Optimized for photos of quickly moving people.</p>
1907      * <p>Similar to ACTION.</p>
1908      * @see CaptureRequest#CONTROL_SCENE_MODE
1909      */
1910     public static final int CONTROL_SCENE_MODE_SPORTS = 13;
1911 
1912     /**
1913      * <p>Optimized for dim, indoor settings with multiple moving
1914      * people.</p>
1915      * @see CaptureRequest#CONTROL_SCENE_MODE
1916      */
1917     public static final int CONTROL_SCENE_MODE_PARTY = 14;
1918 
1919     /**
1920      * <p>Optimized for dim settings where the main light source
1921      * is a flame.</p>
1922      * @see CaptureRequest#CONTROL_SCENE_MODE
1923      */
1924     public static final int CONTROL_SCENE_MODE_CANDLELIGHT = 15;
1925 
1926     /**
1927      * <p>Optimized for accurately capturing a photo of barcode
1928      * for use by camera applications that wish to read the
1929      * barcode value.</p>
1930      * @see CaptureRequest#CONTROL_SCENE_MODE
1931      */
1932     public static final int CONTROL_SCENE_MODE_BARCODE = 16;
1933 
1934     /**
1935      * <p>This is deprecated, please use {@link android.hardware.camera2.CameraDevice#createConstrainedHighSpeedCaptureSession }
1936      * and {@link android.hardware.camera2.CameraConstrainedHighSpeedCaptureSession#createHighSpeedRequestList }
1937      * for high speed video recording.</p>
1938      * <p>Optimized for high speed video recording (frame rate &gt;=60fps) use case.</p>
1939      * <p>The supported high speed video sizes and fps ranges are specified in
1940      * android.control.availableHighSpeedVideoConfigurations. To get desired
1941      * output frame rates, the application is only allowed to select video size
1942      * and fps range combinations listed in this static metadata. The fps range
1943      * can be control via {@link CaptureRequest#CONTROL_AE_TARGET_FPS_RANGE android.control.aeTargetFpsRange}.</p>
1944      * <p>In this mode, the camera device will override aeMode, awbMode, and afMode to
1945      * ON, ON, and CONTINUOUS_VIDEO, respectively. All post-processing block mode
1946      * controls will be overridden to be FAST. Therefore, no manual control of capture
1947      * and post-processing parameters is possible. All other controls operate the
1948      * same as when {@link CaptureRequest#CONTROL_MODE android.control.mode} == AUTO. This means that all other
1949      * android.control.* fields continue to work, such as</p>
1950      * <ul>
1951      * <li>{@link CaptureRequest#CONTROL_AE_TARGET_FPS_RANGE android.control.aeTargetFpsRange}</li>
1952      * <li>{@link CaptureRequest#CONTROL_AE_EXPOSURE_COMPENSATION android.control.aeExposureCompensation}</li>
1953      * <li>{@link CaptureRequest#CONTROL_AE_LOCK android.control.aeLock}</li>
1954      * <li>{@link CaptureRequest#CONTROL_AWB_LOCK android.control.awbLock}</li>
1955      * <li>{@link CaptureRequest#CONTROL_EFFECT_MODE android.control.effectMode}</li>
1956      * <li>{@link CaptureRequest#CONTROL_AE_REGIONS android.control.aeRegions}</li>
1957      * <li>{@link CaptureRequest#CONTROL_AF_REGIONS android.control.afRegions}</li>
1958      * <li>{@link CaptureRequest#CONTROL_AWB_REGIONS android.control.awbRegions}</li>
1959      * <li>{@link CaptureRequest#CONTROL_AF_TRIGGER android.control.afTrigger}</li>
1960      * <li>{@link CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER android.control.aePrecaptureTrigger}</li>
1961      * </ul>
1962      * <p>Outside of android.control.*, the following controls will work:</p>
1963      * <ul>
1964      * <li>{@link CaptureRequest#FLASH_MODE android.flash.mode} (automatic flash for still capture will not work since aeMode is ON)</li>
1965      * <li>{@link CaptureRequest#LENS_OPTICAL_STABILIZATION_MODE android.lens.opticalStabilizationMode} (if it is supported)</li>
1966      * <li>{@link CaptureRequest#SCALER_CROP_REGION android.scaler.cropRegion}</li>
1967      * <li>{@link CaptureRequest#STATISTICS_FACE_DETECT_MODE android.statistics.faceDetectMode}</li>
1968      * </ul>
1969      * <p>For high speed recording use case, the actual maximum supported frame rate may
1970      * be lower than what camera can output, depending on the destination Surfaces for
1971      * the image data. For example, if the destination surface is from video encoder,
1972      * the application need check if the video encoder is capable of supporting the
1973      * high frame rate for a given video size, or it will end up with lower recording
1974      * frame rate. If the destination surface is from preview window, the preview frame
1975      * rate will be bounded by the screen refresh rate.</p>
1976      * <p>The camera device will only support up to 2 output high speed streams
1977      * (processed non-stalling format defined in android.request.maxNumOutputStreams)
1978      * in this mode. This control will be effective only if all of below conditions are true:</p>
1979      * <ul>
1980      * <li>The application created no more than maxNumHighSpeedStreams processed non-stalling
1981      * format output streams, where maxNumHighSpeedStreams is calculated as
1982      * min(2, android.request.maxNumOutputStreams[Processed (but not-stalling)]).</li>
1983      * <li>The stream sizes are selected from the sizes reported by
1984      * android.control.availableHighSpeedVideoConfigurations.</li>
1985      * <li>No processed non-stalling or raw streams are configured.</li>
1986      * </ul>
1987      * <p>When above conditions are NOT satistied, the controls of this mode and
1988      * {@link CaptureRequest#CONTROL_AE_TARGET_FPS_RANGE android.control.aeTargetFpsRange} will be ignored by the camera device,
1989      * the camera device will fall back to {@link CaptureRequest#CONTROL_MODE android.control.mode} <code>==</code> AUTO,
1990      * and the returned capture result metadata will give the fps range choosen
1991      * by the camera device.</p>
1992      * <p>Switching into or out of this mode may trigger some camera ISP/sensor
1993      * reconfigurations, which may introduce extra latency. It is recommended that
1994      * the application avoids unnecessary scene mode switch as much as possible.</p>
1995      *
1996      * @see CaptureRequest#CONTROL_AE_EXPOSURE_COMPENSATION
1997      * @see CaptureRequest#CONTROL_AE_LOCK
1998      * @see CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
1999      * @see CaptureRequest#CONTROL_AE_REGIONS
2000      * @see CaptureRequest#CONTROL_AE_TARGET_FPS_RANGE
2001      * @see CaptureRequest#CONTROL_AF_REGIONS
2002      * @see CaptureRequest#CONTROL_AF_TRIGGER
2003      * @see CaptureRequest#CONTROL_AWB_LOCK
2004      * @see CaptureRequest#CONTROL_AWB_REGIONS
2005      * @see CaptureRequest#CONTROL_EFFECT_MODE
2006      * @see CaptureRequest#CONTROL_MODE
2007      * @see CaptureRequest#FLASH_MODE
2008      * @see CaptureRequest#LENS_OPTICAL_STABILIZATION_MODE
2009      * @see CaptureRequest#SCALER_CROP_REGION
2010      * @see CaptureRequest#STATISTICS_FACE_DETECT_MODE
2011      * @see CaptureRequest#CONTROL_SCENE_MODE
2012      * @deprecated Please refer to this API documentation to find the alternatives
2013      */
2014     @Deprecated
2015     public static final int CONTROL_SCENE_MODE_HIGH_SPEED_VIDEO = 17;
2016 
2017     /**
2018      * <p>Turn on a device-specific high dynamic range (HDR) mode.</p>
2019      * <p>In this scene mode, the camera device captures images
2020      * that keep a larger range of scene illumination levels
2021      * visible in the final image. For example, when taking a
2022      * picture of a object in front of a bright window, both
2023      * the object and the scene through the window may be
2024      * visible when using HDR mode, while in normal AUTO mode,
2025      * one or the other may be poorly exposed. As a tradeoff,
2026      * HDR mode generally takes much longer to capture a single
2027      * image, has no user control, and may have other artifacts
2028      * depending on the HDR method used.</p>
2029      * <p>Therefore, HDR captures operate at a much slower rate
2030      * than regular captures.</p>
2031      * <p>In this mode, on LIMITED or FULL devices, when a request
2032      * is made with a {@link CaptureRequest#CONTROL_CAPTURE_INTENT android.control.captureIntent} of
2033      * STILL_CAPTURE, the camera device will capture an image
2034      * using a high dynamic range capture technique.  On LEGACY
2035      * devices, captures that target a JPEG-format output will
2036      * be captured with HDR, and the capture intent is not
2037      * relevant.</p>
2038      * <p>The HDR capture may involve the device capturing a burst
2039      * of images internally and combining them into one, or it
2040      * may involve the device using specialized high dynamic
2041      * range capture hardware. In all cases, a single image is
2042      * produced in response to a capture request submitted
2043      * while in HDR mode.</p>
2044      * <p>Since substantial post-processing is generally needed to
2045      * produce an HDR image, only YUV, PRIVATE, and JPEG
2046      * outputs are supported for LIMITED/FULL device HDR
2047      * captures, and only JPEG outputs are supported for LEGACY
2048      * HDR captures. Using a RAW output for HDR capture is not
2049      * supported.</p>
2050      * <p>Some devices may also support always-on HDR, which
2051      * applies HDR processing at full frame rate.  For these
2052      * devices, intents other than STILL_CAPTURE will also
2053      * produce an HDR output with no frame rate impact compared
2054      * to normal operation, though the quality may be lower
2055      * than for STILL_CAPTURE intents.</p>
2056      * <p>If SCENE_MODE_HDR is used with unsupported output types
2057      * or capture intents, the images captured will be as if
2058      * the SCENE_MODE was not enabled at all.</p>
2059      *
2060      * @see CaptureRequest#CONTROL_CAPTURE_INTENT
2061      * @see CaptureRequest#CONTROL_SCENE_MODE
2062      */
2063     public static final int CONTROL_SCENE_MODE_HDR = 18;
2064 
2065     /**
2066      * <p>Same as FACE_PRIORITY scene mode, except that the camera
2067      * device will choose higher sensitivity values ({@link CaptureRequest#SENSOR_SENSITIVITY android.sensor.sensitivity})
2068      * under low light conditions.</p>
2069      * <p>The camera device may be tuned to expose the images in a reduced
2070      * sensitivity range to produce the best quality images. For example,
2071      * if the {@link CameraCharacteristics#SENSOR_INFO_SENSITIVITY_RANGE android.sensor.info.sensitivityRange} gives range of [100, 1600],
2072      * the camera device auto-exposure routine tuning process may limit the actual
2073      * exposure sensitivity range to [100, 1200] to ensure that the noise level isn't
2074      * exessive in order to preserve the image quality. Under this situation, the image under
2075      * low light may be under-exposed when the sensor max exposure time (bounded by the
2076      * {@link CaptureRequest#CONTROL_AE_TARGET_FPS_RANGE android.control.aeTargetFpsRange} when {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode} is one of the
2077      * ON_* modes) and effective max sensitivity are reached. This scene mode allows the
2078      * camera device auto-exposure routine to increase the sensitivity up to the max
2079      * sensitivity specified by {@link CameraCharacteristics#SENSOR_INFO_SENSITIVITY_RANGE android.sensor.info.sensitivityRange} when the scene is too
2080      * dark and the max exposure time is reached. The captured images may be noisier
2081      * compared with the images captured in normal FACE_PRIORITY mode; therefore, it is
2082      * recommended that the application only use this scene mode when it is capable of
2083      * reducing the noise level of the captured images.</p>
2084      * <p>Unlike the other scene modes, {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode},
2085      * {@link CaptureRequest#CONTROL_AWB_MODE android.control.awbMode}, and {@link CaptureRequest#CONTROL_AF_MODE android.control.afMode}
2086      * remain active when FACE_PRIORITY_LOW_LIGHT is set.</p>
2087      *
2088      * @see CaptureRequest#CONTROL_AE_MODE
2089      * @see CaptureRequest#CONTROL_AE_TARGET_FPS_RANGE
2090      * @see CaptureRequest#CONTROL_AF_MODE
2091      * @see CaptureRequest#CONTROL_AWB_MODE
2092      * @see CameraCharacteristics#SENSOR_INFO_SENSITIVITY_RANGE
2093      * @see CaptureRequest#SENSOR_SENSITIVITY
2094      * @see CaptureRequest#CONTROL_SCENE_MODE
2095      * @hide
2096      */
2097     public static final int CONTROL_SCENE_MODE_FACE_PRIORITY_LOW_LIGHT = 19;
2098 
2099     /**
2100      * <p>Scene mode values within the range of
2101      * <code>[DEVICE_CUSTOM_START, DEVICE_CUSTOM_END]</code> are reserved for device specific
2102      * customized scene modes.</p>
2103      * @see CaptureRequest#CONTROL_SCENE_MODE
2104      * @hide
2105      */
2106     public static final int CONTROL_SCENE_MODE_DEVICE_CUSTOM_START = 100;
2107 
2108     /**
2109      * <p>Scene mode values within the range of
2110      * <code>[DEVICE_CUSTOM_START, DEVICE_CUSTOM_END]</code> are reserved for device specific
2111      * customized scene modes.</p>
2112      * @see CaptureRequest#CONTROL_SCENE_MODE
2113      * @hide
2114      */
2115     public static final int CONTROL_SCENE_MODE_DEVICE_CUSTOM_END = 127;
2116 
2117     //
2118     // Enumeration values for CaptureRequest#CONTROL_VIDEO_STABILIZATION_MODE
2119     //
2120 
2121     /**
2122      * <p>Video stabilization is disabled.</p>
2123      * @see CaptureRequest#CONTROL_VIDEO_STABILIZATION_MODE
2124      */
2125     public static final int CONTROL_VIDEO_STABILIZATION_MODE_OFF = 0;
2126 
2127     /**
2128      * <p>Video stabilization is enabled.</p>
2129      * @see CaptureRequest#CONTROL_VIDEO_STABILIZATION_MODE
2130      */
2131     public static final int CONTROL_VIDEO_STABILIZATION_MODE_ON = 1;
2132 
2133     //
2134     // Enumeration values for CaptureRequest#EDGE_MODE
2135     //
2136 
2137     /**
2138      * <p>No edge enhancement is applied.</p>
2139      * @see CaptureRequest#EDGE_MODE
2140      */
2141     public static final int EDGE_MODE_OFF = 0;
2142 
2143     /**
2144      * <p>Apply edge enhancement at a quality level that does not slow down frame rate
2145      * relative to sensor output. It may be the same as OFF if edge enhancement will
2146      * slow down frame rate relative to sensor.</p>
2147      * @see CaptureRequest#EDGE_MODE
2148      */
2149     public static final int EDGE_MODE_FAST = 1;
2150 
2151     /**
2152      * <p>Apply high-quality edge enhancement, at a cost of possibly reduced output frame rate.</p>
2153      * @see CaptureRequest#EDGE_MODE
2154      */
2155     public static final int EDGE_MODE_HIGH_QUALITY = 2;
2156 
2157     /**
2158      * <p>Edge enhancement is applied at different levels for different output streams,
2159      * based on resolution. Streams at maximum recording resolution (see {@link android.hardware.camera2.CameraDevice#createCaptureSession }) or below have
2160      * edge enhancement applied, while higher-resolution streams have no edge enhancement
2161      * applied. The level of edge enhancement for low-resolution streams is tuned so that
2162      * frame rate is not impacted, and the quality is equal to or better than FAST (since it
2163      * is only applied to lower-resolution outputs, quality may improve from FAST).</p>
2164      * <p>This mode is intended to be used by applications operating in a zero-shutter-lag mode
2165      * with YUV or PRIVATE reprocessing, where the application continuously captures
2166      * high-resolution intermediate buffers into a circular buffer, from which a final image is
2167      * produced via reprocessing when a user takes a picture.  For such a use case, the
2168      * high-resolution buffers must not have edge enhancement applied to maximize efficiency of
2169      * preview and to avoid double-applying enhancement when reprocessed, while low-resolution
2170      * buffers (used for recording or preview, generally) need edge enhancement applied for
2171      * reasonable preview quality.</p>
2172      * <p>This mode is guaranteed to be supported by devices that support either the
2173      * YUV_REPROCESSING or PRIVATE_REPROCESSING capabilities
2174      * ({@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES android.request.availableCapabilities} lists either of those capabilities) and it will
2175      * be the default mode for CAMERA3_TEMPLATE_ZERO_SHUTTER_LAG template.</p>
2176      *
2177      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
2178      * @see CaptureRequest#EDGE_MODE
2179      */
2180     public static final int EDGE_MODE_ZERO_SHUTTER_LAG = 3;
2181 
2182     //
2183     // Enumeration values for CaptureRequest#FLASH_MODE
2184     //
2185 
2186     /**
2187      * <p>Do not fire the flash for this capture.</p>
2188      * @see CaptureRequest#FLASH_MODE
2189      */
2190     public static final int FLASH_MODE_OFF = 0;
2191 
2192     /**
2193      * <p>If the flash is available and charged, fire flash
2194      * for this capture.</p>
2195      * @see CaptureRequest#FLASH_MODE
2196      */
2197     public static final int FLASH_MODE_SINGLE = 1;
2198 
2199     /**
2200      * <p>Transition flash to continuously on.</p>
2201      * @see CaptureRequest#FLASH_MODE
2202      */
2203     public static final int FLASH_MODE_TORCH = 2;
2204 
2205     //
2206     // Enumeration values for CaptureRequest#HOT_PIXEL_MODE
2207     //
2208 
2209     /**
2210      * <p>No hot pixel correction is applied.</p>
2211      * <p>The frame rate must not be reduced relative to sensor raw output
2212      * for this option.</p>
2213      * <p>The hotpixel map may be returned in {@link CaptureResult#STATISTICS_HOT_PIXEL_MAP android.statistics.hotPixelMap}.</p>
2214      *
2215      * @see CaptureResult#STATISTICS_HOT_PIXEL_MAP
2216      * @see CaptureRequest#HOT_PIXEL_MODE
2217      */
2218     public static final int HOT_PIXEL_MODE_OFF = 0;
2219 
2220     /**
2221      * <p>Hot pixel correction is applied, without reducing frame
2222      * rate relative to sensor raw output.</p>
2223      * <p>The hotpixel map may be returned in {@link CaptureResult#STATISTICS_HOT_PIXEL_MAP android.statistics.hotPixelMap}.</p>
2224      *
2225      * @see CaptureResult#STATISTICS_HOT_PIXEL_MAP
2226      * @see CaptureRequest#HOT_PIXEL_MODE
2227      */
2228     public static final int HOT_PIXEL_MODE_FAST = 1;
2229 
2230     /**
2231      * <p>High-quality hot pixel correction is applied, at a cost
2232      * of possibly reduced frame rate relative to sensor raw output.</p>
2233      * <p>The hotpixel map may be returned in {@link CaptureResult#STATISTICS_HOT_PIXEL_MAP android.statistics.hotPixelMap}.</p>
2234      *
2235      * @see CaptureResult#STATISTICS_HOT_PIXEL_MAP
2236      * @see CaptureRequest#HOT_PIXEL_MODE
2237      */
2238     public static final int HOT_PIXEL_MODE_HIGH_QUALITY = 2;
2239 
2240     //
2241     // Enumeration values for CaptureRequest#LENS_OPTICAL_STABILIZATION_MODE
2242     //
2243 
2244     /**
2245      * <p>Optical stabilization is unavailable.</p>
2246      * @see CaptureRequest#LENS_OPTICAL_STABILIZATION_MODE
2247      */
2248     public static final int LENS_OPTICAL_STABILIZATION_MODE_OFF = 0;
2249 
2250     /**
2251      * <p>Optical stabilization is enabled.</p>
2252      * @see CaptureRequest#LENS_OPTICAL_STABILIZATION_MODE
2253      */
2254     public static final int LENS_OPTICAL_STABILIZATION_MODE_ON = 1;
2255 
2256     //
2257     // Enumeration values for CaptureRequest#NOISE_REDUCTION_MODE
2258     //
2259 
2260     /**
2261      * <p>No noise reduction is applied.</p>
2262      * @see CaptureRequest#NOISE_REDUCTION_MODE
2263      */
2264     public static final int NOISE_REDUCTION_MODE_OFF = 0;
2265 
2266     /**
2267      * <p>Noise reduction is applied without reducing frame rate relative to sensor
2268      * output. It may be the same as OFF if noise reduction will reduce frame rate
2269      * relative to sensor.</p>
2270      * @see CaptureRequest#NOISE_REDUCTION_MODE
2271      */
2272     public static final int NOISE_REDUCTION_MODE_FAST = 1;
2273 
2274     /**
2275      * <p>High-quality noise reduction is applied, at the cost of possibly reduced frame
2276      * rate relative to sensor output.</p>
2277      * @see CaptureRequest#NOISE_REDUCTION_MODE
2278      */
2279     public static final int NOISE_REDUCTION_MODE_HIGH_QUALITY = 2;
2280 
2281     /**
2282      * <p>MINIMAL noise reduction is applied without reducing frame rate relative to
2283      * sensor output. </p>
2284      * @see CaptureRequest#NOISE_REDUCTION_MODE
2285      */
2286     public static final int NOISE_REDUCTION_MODE_MINIMAL = 3;
2287 
2288     /**
2289      * <p>Noise reduction is applied at different levels for different output streams,
2290      * based on resolution. Streams at maximum recording resolution (see {@link android.hardware.camera2.CameraDevice#createCaptureSession }) or below have noise
2291      * reduction applied, while higher-resolution streams have MINIMAL (if supported) or no
2292      * noise reduction applied (if MINIMAL is not supported.) The degree of noise reduction
2293      * for low-resolution streams is tuned so that frame rate is not impacted, and the quality
2294      * is equal to or better than FAST (since it is only applied to lower-resolution outputs,
2295      * quality may improve from FAST).</p>
2296      * <p>This mode is intended to be used by applications operating in a zero-shutter-lag mode
2297      * with YUV or PRIVATE reprocessing, where the application continuously captures
2298      * high-resolution intermediate buffers into a circular buffer, from which a final image is
2299      * produced via reprocessing when a user takes a picture.  For such a use case, the
2300      * high-resolution buffers must not have noise reduction applied to maximize efficiency of
2301      * preview and to avoid over-applying noise filtering when reprocessing, while
2302      * low-resolution buffers (used for recording or preview, generally) need noise reduction
2303      * applied for reasonable preview quality.</p>
2304      * <p>This mode is guaranteed to be supported by devices that support either the
2305      * YUV_REPROCESSING or PRIVATE_REPROCESSING capabilities
2306      * ({@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES android.request.availableCapabilities} lists either of those capabilities) and it will
2307      * be the default mode for CAMERA3_TEMPLATE_ZERO_SHUTTER_LAG template.</p>
2308      *
2309      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
2310      * @see CaptureRequest#NOISE_REDUCTION_MODE
2311      */
2312     public static final int NOISE_REDUCTION_MODE_ZERO_SHUTTER_LAG = 4;
2313 
2314     //
2315     // Enumeration values for CaptureRequest#SENSOR_TEST_PATTERN_MODE
2316     //
2317 
2318     /**
2319      * <p>No test pattern mode is used, and the camera
2320      * device returns captures from the image sensor.</p>
2321      * <p>This is the default if the key is not set.</p>
2322      * @see CaptureRequest#SENSOR_TEST_PATTERN_MODE
2323      */
2324     public static final int SENSOR_TEST_PATTERN_MODE_OFF = 0;
2325 
2326     /**
2327      * <p>Each pixel in <code>[R, G_even, G_odd, B]</code> is replaced by its
2328      * respective color channel provided in
2329      * {@link CaptureRequest#SENSOR_TEST_PATTERN_DATA android.sensor.testPatternData}.</p>
2330      * <p>For example:</p>
2331      * <pre><code>android.testPatternData = [0, 0xFFFFFFFF, 0xFFFFFFFF, 0]
2332      * </code></pre>
2333      * <p>All green pixels are 100% green. All red/blue pixels are black.</p>
2334      * <pre><code>android.testPatternData = [0xFFFFFFFF, 0, 0xFFFFFFFF, 0]
2335      * </code></pre>
2336      * <p>All red pixels are 100% red. Only the odd green pixels
2337      * are 100% green. All blue pixels are 100% black.</p>
2338      *
2339      * @see CaptureRequest#SENSOR_TEST_PATTERN_DATA
2340      * @see CaptureRequest#SENSOR_TEST_PATTERN_MODE
2341      */
2342     public static final int SENSOR_TEST_PATTERN_MODE_SOLID_COLOR = 1;
2343 
2344     /**
2345      * <p>All pixel data is replaced with an 8-bar color pattern.</p>
2346      * <p>The vertical bars (left-to-right) are as follows:</p>
2347      * <ul>
2348      * <li>100% white</li>
2349      * <li>yellow</li>
2350      * <li>cyan</li>
2351      * <li>green</li>
2352      * <li>magenta</li>
2353      * <li>red</li>
2354      * <li>blue</li>
2355      * <li>black</li>
2356      * </ul>
2357      * <p>In general the image would look like the following:</p>
2358      * <pre><code>W Y C G M R B K
2359      * W Y C G M R B K
2360      * W Y C G M R B K
2361      * W Y C G M R B K
2362      * W Y C G M R B K
2363      * . . . . . . . .
2364      * . . . . . . . .
2365      * . . . . . . . .
2366      *
2367      * (B = Blue, K = Black)
2368      * </code></pre>
2369      * <p>Each bar should take up 1/8 of the sensor pixel array width.
2370      * When this is not possible, the bar size should be rounded
2371      * down to the nearest integer and the pattern can repeat
2372      * on the right side.</p>
2373      * <p>Each bar's height must always take up the full sensor
2374      * pixel array height.</p>
2375      * <p>Each pixel in this test pattern must be set to either
2376      * 0% intensity or 100% intensity.</p>
2377      * @see CaptureRequest#SENSOR_TEST_PATTERN_MODE
2378      */
2379     public static final int SENSOR_TEST_PATTERN_MODE_COLOR_BARS = 2;
2380 
2381     /**
2382      * <p>The test pattern is similar to COLOR_BARS, except that
2383      * each bar should start at its specified color at the top,
2384      * and fade to gray at the bottom.</p>
2385      * <p>Furthermore each bar is further subdivided into a left and
2386      * right half. The left half should have a smooth gradient,
2387      * and the right half should have a quantized gradient.</p>
2388      * <p>In particular, the right half's should consist of blocks of the
2389      * same color for 1/16th active sensor pixel array width.</p>
2390      * <p>The least significant bits in the quantized gradient should
2391      * be copied from the most significant bits of the smooth gradient.</p>
2392      * <p>The height of each bar should always be a multiple of 128.
2393      * When this is not the case, the pattern should repeat at the bottom
2394      * of the image.</p>
2395      * @see CaptureRequest#SENSOR_TEST_PATTERN_MODE
2396      */
2397     public static final int SENSOR_TEST_PATTERN_MODE_COLOR_BARS_FADE_TO_GRAY = 3;
2398 
2399     /**
2400      * <p>All pixel data is replaced by a pseudo-random sequence
2401      * generated from a PN9 512-bit sequence (typically implemented
2402      * in hardware with a linear feedback shift register).</p>
2403      * <p>The generator should be reset at the beginning of each frame,
2404      * and thus each subsequent raw frame with this test pattern should
2405      * be exactly the same as the last.</p>
2406      * @see CaptureRequest#SENSOR_TEST_PATTERN_MODE
2407      */
2408     public static final int SENSOR_TEST_PATTERN_MODE_PN9 = 4;
2409 
2410     /**
2411      * <p>The first custom test pattern. All custom patterns that are
2412      * available only on this camera device are at least this numeric
2413      * value.</p>
2414      * <p>All of the custom test patterns will be static
2415      * (that is the raw image must not vary from frame to frame).</p>
2416      * @see CaptureRequest#SENSOR_TEST_PATTERN_MODE
2417      */
2418     public static final int SENSOR_TEST_PATTERN_MODE_CUSTOM1 = 256;
2419 
2420     //
2421     // Enumeration values for CaptureRequest#SHADING_MODE
2422     //
2423 
2424     /**
2425      * <p>No lens shading correction is applied.</p>
2426      * @see CaptureRequest#SHADING_MODE
2427      */
2428     public static final int SHADING_MODE_OFF = 0;
2429 
2430     /**
2431      * <p>Apply lens shading corrections, without slowing
2432      * frame rate relative to sensor raw output</p>
2433      * @see CaptureRequest#SHADING_MODE
2434      */
2435     public static final int SHADING_MODE_FAST = 1;
2436 
2437     /**
2438      * <p>Apply high-quality lens shading correction, at the
2439      * cost of possibly reduced frame rate.</p>
2440      * @see CaptureRequest#SHADING_MODE
2441      */
2442     public static final int SHADING_MODE_HIGH_QUALITY = 2;
2443 
2444     //
2445     // Enumeration values for CaptureRequest#STATISTICS_FACE_DETECT_MODE
2446     //
2447 
2448     /**
2449      * <p>Do not include face detection statistics in capture
2450      * results.</p>
2451      * @see CaptureRequest#STATISTICS_FACE_DETECT_MODE
2452      */
2453     public static final int STATISTICS_FACE_DETECT_MODE_OFF = 0;
2454 
2455     /**
2456      * <p>Return face rectangle and confidence values only.</p>
2457      * @see CaptureRequest#STATISTICS_FACE_DETECT_MODE
2458      */
2459     public static final int STATISTICS_FACE_DETECT_MODE_SIMPLE = 1;
2460 
2461     /**
2462      * <p>Return all face
2463      * metadata.</p>
2464      * <p>In this mode, face rectangles, scores, landmarks, and face IDs are all valid.</p>
2465      * @see CaptureRequest#STATISTICS_FACE_DETECT_MODE
2466      */
2467     public static final int STATISTICS_FACE_DETECT_MODE_FULL = 2;
2468 
2469     //
2470     // Enumeration values for CaptureRequest#STATISTICS_LENS_SHADING_MAP_MODE
2471     //
2472 
2473     /**
2474      * <p>Do not include a lens shading map in the capture result.</p>
2475      * @see CaptureRequest#STATISTICS_LENS_SHADING_MAP_MODE
2476      */
2477     public static final int STATISTICS_LENS_SHADING_MAP_MODE_OFF = 0;
2478 
2479     /**
2480      * <p>Include a lens shading map in the capture result.</p>
2481      * @see CaptureRequest#STATISTICS_LENS_SHADING_MAP_MODE
2482      */
2483     public static final int STATISTICS_LENS_SHADING_MAP_MODE_ON = 1;
2484 
2485     //
2486     // Enumeration values for CaptureRequest#TONEMAP_MODE
2487     //
2488 
2489     /**
2490      * <p>Use the tone mapping curve specified in
2491      * the {@link CaptureRequest#TONEMAP_CURVE android.tonemap.curve}* entries.</p>
2492      * <p>All color enhancement and tonemapping must be disabled, except
2493      * for applying the tonemapping curve specified by
2494      * {@link CaptureRequest#TONEMAP_CURVE android.tonemap.curve}.</p>
2495      * <p>Must not slow down frame rate relative to raw
2496      * sensor output.</p>
2497      *
2498      * @see CaptureRequest#TONEMAP_CURVE
2499      * @see CaptureRequest#TONEMAP_MODE
2500      */
2501     public static final int TONEMAP_MODE_CONTRAST_CURVE = 0;
2502 
2503     /**
2504      * <p>Advanced gamma mapping and color enhancement may be applied, without
2505      * reducing frame rate compared to raw sensor output.</p>
2506      * @see CaptureRequest#TONEMAP_MODE
2507      */
2508     public static final int TONEMAP_MODE_FAST = 1;
2509 
2510     /**
2511      * <p>High-quality gamma mapping and color enhancement will be applied, at
2512      * the cost of possibly reduced frame rate compared to raw sensor output.</p>
2513      * @see CaptureRequest#TONEMAP_MODE
2514      */
2515     public static final int TONEMAP_MODE_HIGH_QUALITY = 2;
2516 
2517     /**
2518      * <p>Use the gamma value specified in {@link CaptureRequest#TONEMAP_GAMMA android.tonemap.gamma} to peform
2519      * tonemapping.</p>
2520      * <p>All color enhancement and tonemapping must be disabled, except
2521      * for applying the tonemapping curve specified by {@link CaptureRequest#TONEMAP_GAMMA android.tonemap.gamma}.</p>
2522      * <p>Must not slow down frame rate relative to raw sensor output.</p>
2523      *
2524      * @see CaptureRequest#TONEMAP_GAMMA
2525      * @see CaptureRequest#TONEMAP_MODE
2526      */
2527     public static final int TONEMAP_MODE_GAMMA_VALUE = 3;
2528 
2529     /**
2530      * <p>Use the preset tonemapping curve specified in
2531      * {@link CaptureRequest#TONEMAP_PRESET_CURVE android.tonemap.presetCurve} to peform tonemapping.</p>
2532      * <p>All color enhancement and tonemapping must be disabled, except
2533      * for applying the tonemapping curve specified by
2534      * {@link CaptureRequest#TONEMAP_PRESET_CURVE android.tonemap.presetCurve}.</p>
2535      * <p>Must not slow down frame rate relative to raw sensor output.</p>
2536      *
2537      * @see CaptureRequest#TONEMAP_PRESET_CURVE
2538      * @see CaptureRequest#TONEMAP_MODE
2539      */
2540     public static final int TONEMAP_MODE_PRESET_CURVE = 4;
2541 
2542     //
2543     // Enumeration values for CaptureRequest#TONEMAP_PRESET_CURVE
2544     //
2545 
2546     /**
2547      * <p>Tonemapping curve is defined by sRGB</p>
2548      * @see CaptureRequest#TONEMAP_PRESET_CURVE
2549      */
2550     public static final int TONEMAP_PRESET_CURVE_SRGB = 0;
2551 
2552     /**
2553      * <p>Tonemapping curve is defined by ITU-R BT.709</p>
2554      * @see CaptureRequest#TONEMAP_PRESET_CURVE
2555      */
2556     public static final int TONEMAP_PRESET_CURVE_REC709 = 1;
2557 
2558     //
2559     // Enumeration values for CaptureResult#CONTROL_AE_STATE
2560     //
2561 
2562     /**
2563      * <p>AE is off or recently reset.</p>
2564      * <p>When a camera device is opened, it starts in
2565      * this state. This is a transient state, the camera device may skip reporting
2566      * this state in capture result.</p>
2567      * @see CaptureResult#CONTROL_AE_STATE
2568      */
2569     public static final int CONTROL_AE_STATE_INACTIVE = 0;
2570 
2571     /**
2572      * <p>AE doesn't yet have a good set of control values
2573      * for the current scene.</p>
2574      * <p>This is a transient state, the camera device may skip
2575      * reporting this state in capture result.</p>
2576      * @see CaptureResult#CONTROL_AE_STATE
2577      */
2578     public static final int CONTROL_AE_STATE_SEARCHING = 1;
2579 
2580     /**
2581      * <p>AE has a good set of control values for the
2582      * current scene.</p>
2583      * @see CaptureResult#CONTROL_AE_STATE
2584      */
2585     public static final int CONTROL_AE_STATE_CONVERGED = 2;
2586 
2587     /**
2588      * <p>AE has been locked.</p>
2589      * @see CaptureResult#CONTROL_AE_STATE
2590      */
2591     public static final int CONTROL_AE_STATE_LOCKED = 3;
2592 
2593     /**
2594      * <p>AE has a good set of control values, but flash
2595      * needs to be fired for good quality still
2596      * capture.</p>
2597      * @see CaptureResult#CONTROL_AE_STATE
2598      */
2599     public static final int CONTROL_AE_STATE_FLASH_REQUIRED = 4;
2600 
2601     /**
2602      * <p>AE has been asked to do a precapture sequence
2603      * and is currently executing it.</p>
2604      * <p>Precapture can be triggered through setting
2605      * {@link CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER android.control.aePrecaptureTrigger} to START. Currently
2606      * active and completed (if it causes camera device internal AE lock) precapture
2607      * metering sequence can be canceled through setting
2608      * {@link CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER android.control.aePrecaptureTrigger} to CANCEL.</p>
2609      * <p>Once PRECAPTURE completes, AE will transition to CONVERGED
2610      * or FLASH_REQUIRED as appropriate. This is a transient
2611      * state, the camera device may skip reporting this state in
2612      * capture result.</p>
2613      *
2614      * @see CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
2615      * @see CaptureResult#CONTROL_AE_STATE
2616      */
2617     public static final int CONTROL_AE_STATE_PRECAPTURE = 5;
2618 
2619     //
2620     // Enumeration values for CaptureResult#CONTROL_AF_STATE
2621     //
2622 
2623     /**
2624      * <p>AF is off or has not yet tried to scan/been asked
2625      * to scan.</p>
2626      * <p>When a camera device is opened, it starts in this
2627      * state. This is a transient state, the camera device may
2628      * skip reporting this state in capture
2629      * result.</p>
2630      * @see CaptureResult#CONTROL_AF_STATE
2631      */
2632     public static final int CONTROL_AF_STATE_INACTIVE = 0;
2633 
2634     /**
2635      * <p>AF is currently performing an AF scan initiated the
2636      * camera device in a continuous autofocus mode.</p>
2637      * <p>Only used by CONTINUOUS_* AF modes. This is a transient
2638      * state, the camera device may skip reporting this state in
2639      * capture result.</p>
2640      * @see CaptureResult#CONTROL_AF_STATE
2641      */
2642     public static final int CONTROL_AF_STATE_PASSIVE_SCAN = 1;
2643 
2644     /**
2645      * <p>AF currently believes it is in focus, but may
2646      * restart scanning at any time.</p>
2647      * <p>Only used by CONTINUOUS_* AF modes. This is a transient
2648      * state, the camera device may skip reporting this state in
2649      * capture result.</p>
2650      * @see CaptureResult#CONTROL_AF_STATE
2651      */
2652     public static final int CONTROL_AF_STATE_PASSIVE_FOCUSED = 2;
2653 
2654     /**
2655      * <p>AF is performing an AF scan because it was
2656      * triggered by AF trigger.</p>
2657      * <p>Only used by AUTO or MACRO AF modes. This is a transient
2658      * state, the camera device may skip reporting this state in
2659      * capture result.</p>
2660      * @see CaptureResult#CONTROL_AF_STATE
2661      */
2662     public static final int CONTROL_AF_STATE_ACTIVE_SCAN = 3;
2663 
2664     /**
2665      * <p>AF believes it is focused correctly and has locked
2666      * focus.</p>
2667      * <p>This state is reached only after an explicit START AF trigger has been
2668      * sent ({@link CaptureRequest#CONTROL_AF_TRIGGER android.control.afTrigger}), when good focus has been obtained.</p>
2669      * <p>The lens will remain stationary until the AF mode ({@link CaptureRequest#CONTROL_AF_MODE android.control.afMode}) is changed or
2670      * a new AF trigger is sent to the camera device ({@link CaptureRequest#CONTROL_AF_TRIGGER android.control.afTrigger}).</p>
2671      *
2672      * @see CaptureRequest#CONTROL_AF_MODE
2673      * @see CaptureRequest#CONTROL_AF_TRIGGER
2674      * @see CaptureResult#CONTROL_AF_STATE
2675      */
2676     public static final int CONTROL_AF_STATE_FOCUSED_LOCKED = 4;
2677 
2678     /**
2679      * <p>AF has failed to focus successfully and has locked
2680      * focus.</p>
2681      * <p>This state is reached only after an explicit START AF trigger has been
2682      * sent ({@link CaptureRequest#CONTROL_AF_TRIGGER android.control.afTrigger}), when good focus cannot be obtained.</p>
2683      * <p>The lens will remain stationary until the AF mode ({@link CaptureRequest#CONTROL_AF_MODE android.control.afMode}) is changed or
2684      * a new AF trigger is sent to the camera device ({@link CaptureRequest#CONTROL_AF_TRIGGER android.control.afTrigger}).</p>
2685      *
2686      * @see CaptureRequest#CONTROL_AF_MODE
2687      * @see CaptureRequest#CONTROL_AF_TRIGGER
2688      * @see CaptureResult#CONTROL_AF_STATE
2689      */
2690     public static final int CONTROL_AF_STATE_NOT_FOCUSED_LOCKED = 5;
2691 
2692     /**
2693      * <p>AF finished a passive scan without finding focus,
2694      * and may restart scanning at any time.</p>
2695      * <p>Only used by CONTINUOUS_* AF modes. This is a transient state, the camera
2696      * device may skip reporting this state in capture result.</p>
2697      * <p>LEGACY camera devices do not support this state. When a passive
2698      * scan has finished, it will always go to PASSIVE_FOCUSED.</p>
2699      * @see CaptureResult#CONTROL_AF_STATE
2700      */
2701     public static final int CONTROL_AF_STATE_PASSIVE_UNFOCUSED = 6;
2702 
2703     //
2704     // Enumeration values for CaptureResult#CONTROL_AWB_STATE
2705     //
2706 
2707     /**
2708      * <p>AWB is not in auto mode, or has not yet started metering.</p>
2709      * <p>When a camera device is opened, it starts in this
2710      * state. This is a transient state, the camera device may
2711      * skip reporting this state in capture
2712      * result.</p>
2713      * @see CaptureResult#CONTROL_AWB_STATE
2714      */
2715     public static final int CONTROL_AWB_STATE_INACTIVE = 0;
2716 
2717     /**
2718      * <p>AWB doesn't yet have a good set of control
2719      * values for the current scene.</p>
2720      * <p>This is a transient state, the camera device
2721      * may skip reporting this state in capture result.</p>
2722      * @see CaptureResult#CONTROL_AWB_STATE
2723      */
2724     public static final int CONTROL_AWB_STATE_SEARCHING = 1;
2725 
2726     /**
2727      * <p>AWB has a good set of control values for the
2728      * current scene.</p>
2729      * @see CaptureResult#CONTROL_AWB_STATE
2730      */
2731     public static final int CONTROL_AWB_STATE_CONVERGED = 2;
2732 
2733     /**
2734      * <p>AWB has been locked.</p>
2735      * @see CaptureResult#CONTROL_AWB_STATE
2736      */
2737     public static final int CONTROL_AWB_STATE_LOCKED = 3;
2738 
2739     //
2740     // Enumeration values for CaptureResult#FLASH_STATE
2741     //
2742 
2743     /**
2744      * <p>No flash on camera.</p>
2745      * @see CaptureResult#FLASH_STATE
2746      */
2747     public static final int FLASH_STATE_UNAVAILABLE = 0;
2748 
2749     /**
2750      * <p>Flash is charging and cannot be fired.</p>
2751      * @see CaptureResult#FLASH_STATE
2752      */
2753     public static final int FLASH_STATE_CHARGING = 1;
2754 
2755     /**
2756      * <p>Flash is ready to fire.</p>
2757      * @see CaptureResult#FLASH_STATE
2758      */
2759     public static final int FLASH_STATE_READY = 2;
2760 
2761     /**
2762      * <p>Flash fired for this capture.</p>
2763      * @see CaptureResult#FLASH_STATE
2764      */
2765     public static final int FLASH_STATE_FIRED = 3;
2766 
2767     /**
2768      * <p>Flash partially illuminated this frame.</p>
2769      * <p>This is usually due to the next or previous frame having
2770      * the flash fire, and the flash spilling into this capture
2771      * due to hardware limitations.</p>
2772      * @see CaptureResult#FLASH_STATE
2773      */
2774     public static final int FLASH_STATE_PARTIAL = 4;
2775 
2776     //
2777     // Enumeration values for CaptureResult#LENS_STATE
2778     //
2779 
2780     /**
2781      * <p>The lens parameters ({@link CaptureRequest#LENS_FOCAL_LENGTH android.lens.focalLength}, {@link CaptureRequest#LENS_FOCUS_DISTANCE android.lens.focusDistance},
2782      * {@link CaptureRequest#LENS_FILTER_DENSITY android.lens.filterDensity} and {@link CaptureRequest#LENS_APERTURE android.lens.aperture}) are not changing.</p>
2783      *
2784      * @see CaptureRequest#LENS_APERTURE
2785      * @see CaptureRequest#LENS_FILTER_DENSITY
2786      * @see CaptureRequest#LENS_FOCAL_LENGTH
2787      * @see CaptureRequest#LENS_FOCUS_DISTANCE
2788      * @see CaptureResult#LENS_STATE
2789      */
2790     public static final int LENS_STATE_STATIONARY = 0;
2791 
2792     /**
2793      * <p>One or several of the lens parameters
2794      * ({@link CaptureRequest#LENS_FOCAL_LENGTH android.lens.focalLength}, {@link CaptureRequest#LENS_FOCUS_DISTANCE android.lens.focusDistance},
2795      * {@link CaptureRequest#LENS_FILTER_DENSITY android.lens.filterDensity} or {@link CaptureRequest#LENS_APERTURE android.lens.aperture}) is
2796      * currently changing.</p>
2797      *
2798      * @see CaptureRequest#LENS_APERTURE
2799      * @see CaptureRequest#LENS_FILTER_DENSITY
2800      * @see CaptureRequest#LENS_FOCAL_LENGTH
2801      * @see CaptureRequest#LENS_FOCUS_DISTANCE
2802      * @see CaptureResult#LENS_STATE
2803      */
2804     public static final int LENS_STATE_MOVING = 1;
2805 
2806     //
2807     // Enumeration values for CaptureResult#STATISTICS_SCENE_FLICKER
2808     //
2809 
2810     /**
2811      * <p>The camera device does not detect any flickering illumination
2812      * in the current scene.</p>
2813      * @see CaptureResult#STATISTICS_SCENE_FLICKER
2814      */
2815     public static final int STATISTICS_SCENE_FLICKER_NONE = 0;
2816 
2817     /**
2818      * <p>The camera device detects illumination flickering at 50Hz
2819      * in the current scene.</p>
2820      * @see CaptureResult#STATISTICS_SCENE_FLICKER
2821      */
2822     public static final int STATISTICS_SCENE_FLICKER_50HZ = 1;
2823 
2824     /**
2825      * <p>The camera device detects illumination flickering at 60Hz
2826      * in the current scene.</p>
2827      * @see CaptureResult#STATISTICS_SCENE_FLICKER
2828      */
2829     public static final int STATISTICS_SCENE_FLICKER_60HZ = 2;
2830 
2831     //
2832     // Enumeration values for CaptureResult#SYNC_FRAME_NUMBER
2833     //
2834 
2835     /**
2836      * <p>The current result is not yet fully synchronized to any request.</p>
2837      * <p>Synchronization is in progress, and reading metadata from this
2838      * result may include a mix of data that have taken effect since the
2839      * last synchronization time.</p>
2840      * <p>In some future result, within {@link CameraCharacteristics#SYNC_MAX_LATENCY android.sync.maxLatency} frames,
2841      * this value will update to the actual frame number frame number
2842      * the result is guaranteed to be synchronized to (as long as the
2843      * request settings remain constant).</p>
2844      *
2845      * @see CameraCharacteristics#SYNC_MAX_LATENCY
2846      * @see CaptureResult#SYNC_FRAME_NUMBER
2847      * @hide
2848      */
2849     public static final int SYNC_FRAME_NUMBER_CONVERGING = -1;
2850 
2851     /**
2852      * <p>The current result's synchronization status is unknown.</p>
2853      * <p>The result may have already converged, or it may be in
2854      * progress.  Reading from this result may include some mix
2855      * of settings from past requests.</p>
2856      * <p>After a settings change, the new settings will eventually all
2857      * take effect for the output buffers and results. However, this
2858      * value will not change when that happens. Altering settings
2859      * rapidly may provide outcomes using mixes of settings from recent
2860      * requests.</p>
2861      * <p>This value is intended primarily for backwards compatibility with
2862      * the older camera implementations (for android.hardware.Camera).</p>
2863      * @see CaptureResult#SYNC_FRAME_NUMBER
2864      * @hide
2865      */
2866     public static final int SYNC_FRAME_NUMBER_UNKNOWN = -2;
2867 
2868     /*~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~
2869      * End generated code
2870      *~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~O@*/
2871 
2872 }
2873