CameraMetadata.java revision 956c52b5a09fa6b193b162bdb3aee629323cde2b
1/*
2 * Copyright (C) 2013 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package android.hardware.camera2;
18
19import android.hardware.camera2.impl.CameraMetadataNative;
20import android.hardware.camera2.impl.PublicKey;
21import android.hardware.camera2.impl.SyntheticKey;
22import android.util.Log;
23
24import java.lang.reflect.Field;
25import java.lang.reflect.Modifier;
26import java.util.ArrayList;
27import java.util.Arrays;
28import java.util.Collections;
29import java.util.List;
30
31/**
32 * The base class for camera controls and information.
33 *
34 * <p>
35 * This class defines the basic key/value map used for querying for camera
36 * characteristics or capture results, and for setting camera request
37 * parameters.
38 * </p>
39 *
40 * <p>
41 * All instances of CameraMetadata are immutable. The list of keys with {@link #getKeys()}
42 * never changes, nor do the values returned by any key with {@code #get} throughout
43 * the lifetime of the object.
44 * </p>
45 *
46 * @see CameraDevice
47 * @see CameraManager
48 * @see CameraCharacteristics
49 **/
50public abstract class CameraMetadata<TKey> {
51
52    private static final String TAG = "CameraMetadataAb";
53    private static final boolean VERBOSE = Log.isLoggable(TAG, Log.VERBOSE);
54
55    /**
56     * Set a camera metadata field to a value. The field definitions can be
57     * found in {@link CameraCharacteristics}, {@link CaptureResult}, and
58     * {@link CaptureRequest}.
59     *
60     * @param key The metadata field to write.
61     * @param value The value to set the field to, which must be of a matching
62     * type to the key.
63     *
64     * @hide
65     */
66    protected CameraMetadata() {
67    }
68
69    /**
70     * Get a camera metadata field value.
71     *
72     * <p>The field definitions can be
73     * found in {@link CameraCharacteristics}, {@link CaptureResult}, and
74     * {@link CaptureRequest}.</p>
75     *
76     * <p>Querying the value for the same key more than once will return a value
77     * which is equal to the previous queried value.</p>
78     *
79     * @throws IllegalArgumentException if the key was not valid
80     *
81     * @param key The metadata field to read.
82     * @return The value of that key, or {@code null} if the field is not set.
83     *
84     * @hide
85     */
86     protected abstract <T> T getProtected(TKey key);
87
88     /**
89      * @hide
90      */
91     protected abstract Class<TKey> getKeyClass();
92
93    /**
94     * Returns a list of the keys contained in this map.
95     *
96     * <p>The list returned is not modifiable, so any attempts to modify it will throw
97     * a {@code UnsupportedOperationException}.</p>
98     *
99     * <p>All values retrieved by a key from this list with {@code #get} are guaranteed to be
100     * non-{@code null}. Each key is only listed once in the list. The order of the keys
101     * is undefined.</p>
102     *
103     * @return List of the keys contained in this map.
104     */
105    @SuppressWarnings("unchecked")
106    public List<TKey> getKeys() {
107        Class<CameraMetadata<TKey>> thisClass = (Class<CameraMetadata<TKey>>) getClass();
108        return Collections.unmodifiableList(
109                getKeysStatic(thisClass, getKeyClass(), this, /*filterTags*/null));
110    }
111
112    /**
113     * Return a list of all the Key<?> that are declared as a field inside of the class
114     * {@code type}.
115     *
116     * <p>
117     * Optionally, if {@code instance} is not null, then filter out any keys with null values.
118     * </p>
119     *
120     * <p>
121     * Optionally, if {@code filterTags} is not {@code null}, then filter out any keys
122     * whose native {@code tag} is not in {@code filterTags}. The {@code filterTags} array will be
123     * sorted as a side effect.
124     * </p>
125     */
126     /*package*/ @SuppressWarnings("unchecked")
127    static <TKey> ArrayList<TKey> getKeysStatic(
128             Class<?> type, Class<TKey> keyClass,
129             CameraMetadata<TKey> instance,
130             int[] filterTags) {
131
132        if (VERBOSE) Log.v(TAG, "getKeysStatic for " + type);
133
134        // TotalCaptureResult does not have any of the keys on it, use CaptureResult instead
135        if (type.equals(TotalCaptureResult.class)) {
136            type = CaptureResult.class;
137        }
138
139        if (filterTags != null) {
140            Arrays.sort(filterTags);
141        }
142
143        ArrayList<TKey> keyList = new ArrayList<TKey>();
144
145        Field[] fields = type.getDeclaredFields();
146        for (Field field : fields) {
147            // Filter for Keys that are public
148            if (field.getType().isAssignableFrom(keyClass) &&
149                    (field.getModifiers() & Modifier.PUBLIC) != 0) {
150
151                TKey key;
152                try {
153                    key = (TKey) field.get(instance);
154                } catch (IllegalAccessException e) {
155                    throw new AssertionError("Can't get IllegalAccessException", e);
156                } catch (IllegalArgumentException e) {
157                    throw new AssertionError("Can't get IllegalArgumentException", e);
158                }
159
160                if (instance == null || instance.getProtected(key) != null) {
161                    if (shouldKeyBeAdded(key, field, filterTags)) {
162                        keyList.add(key);
163
164                        if (VERBOSE) {
165                            Log.v(TAG, "getKeysStatic - key was added - " + key);
166                        }
167                    } else if (VERBOSE) {
168                        Log.v(TAG, "getKeysStatic - key was filtered - " + key);
169                    }
170                }
171            }
172        }
173
174        return keyList;
175    }
176
177    @SuppressWarnings("rawtypes")
178    private static <TKey> boolean shouldKeyBeAdded(TKey key, Field field, int[] filterTags) {
179        if (key == null) {
180            throw new NullPointerException("key must not be null");
181        }
182
183        CameraMetadataNative.Key nativeKey;
184
185        /*
186         * Get the native key from the public api key
187         */
188        if (key instanceof CameraCharacteristics.Key) {
189            nativeKey = ((CameraCharacteristics.Key)key).getNativeKey();
190        } else if (key instanceof CaptureResult.Key) {
191            nativeKey = ((CaptureResult.Key)key).getNativeKey();
192        } else if (key instanceof CaptureRequest.Key) {
193            nativeKey = ((CaptureRequest.Key)key).getNativeKey();
194        } else {
195            // Reject fields that aren't a key
196            throw new IllegalArgumentException("key type must be that of a metadata key");
197        }
198
199        if (field.getAnnotation(PublicKey.class) == null) {
200            // Never expose @hide keys up to the API user
201            return false;
202        }
203
204        // No filtering necessary
205        if (filterTags == null) {
206            return true;
207        }
208
209        if (field.getAnnotation(SyntheticKey.class) != null) {
210            // This key is synthetic, so calling #getTag will throw IAE
211
212            // TODO: don't just assume all public+synthetic keys are always available
213            return true;
214        }
215
216        /*
217         * Regular key: look up it's native tag and see if it's in filterTags
218         */
219
220        int keyTag = nativeKey.getTag();
221
222        // non-negative result is returned iff the value is in the array
223        return Arrays.binarySearch(filterTags, keyTag) >= 0;
224    }
225
226    /*@O~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~
227     * The enum values below this point are generated from metadata
228     * definitions in /system/media/camera/docs. Do not modify by hand or
229     * modify the comment blocks at the start or end.
230     *~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~*/
231
232    //
233    // Enumeration values for CameraCharacteristics#LENS_INFO_FOCUS_DISTANCE_CALIBRATION
234    //
235
236    /**
237     * <p>The lens focus distance is not accurate, and the units used for
238     * {@link CaptureRequest#LENS_FOCUS_DISTANCE android.lens.focusDistance} do not correspond to any physical units.</p>
239     * <p>Setting the lens to the same focus distance on separate occasions may
240     * result in a different real focus distance, depending on factors such
241     * as the orientation of the device, the age of the focusing mechanism,
242     * and the device temperature. The focus distance value will still be
243     * in the range of <code>[0, {@link CameraCharacteristics#LENS_INFO_MINIMUM_FOCUS_DISTANCE android.lens.info.minimumFocusDistance}]</code>, where 0
244     * represents the farthest focus.</p>
245     *
246     * @see CaptureRequest#LENS_FOCUS_DISTANCE
247     * @see CameraCharacteristics#LENS_INFO_MINIMUM_FOCUS_DISTANCE
248     * @see CameraCharacteristics#LENS_INFO_FOCUS_DISTANCE_CALIBRATION
249     */
250    public static final int LENS_INFO_FOCUS_DISTANCE_CALIBRATION_UNCALIBRATED = 0;
251
252    /**
253     * <p>The lens focus distance is measured in diopters.</p>
254     * <p>However, setting the lens to the same focus distance
255     * on separate occasions may result in a different real
256     * focus distance, depending on factors such as the
257     * orientation of the device, the age of the focusing
258     * mechanism, and the device temperature.</p>
259     * @see CameraCharacteristics#LENS_INFO_FOCUS_DISTANCE_CALIBRATION
260     */
261    public static final int LENS_INFO_FOCUS_DISTANCE_CALIBRATION_APPROXIMATE = 1;
262
263    /**
264     * <p>The lens focus distance is measured in diopters, and
265     * is calibrated.</p>
266     * <p>The lens mechanism is calibrated so that setting the
267     * same focus distance is repeatable on multiple
268     * occasions with good accuracy, and the focus distance
269     * corresponds to the real physical distance to the plane
270     * of best focus.</p>
271     * @see CameraCharacteristics#LENS_INFO_FOCUS_DISTANCE_CALIBRATION
272     */
273    public static final int LENS_INFO_FOCUS_DISTANCE_CALIBRATION_CALIBRATED = 2;
274
275    //
276    // Enumeration values for CameraCharacteristics#LENS_FACING
277    //
278
279    /**
280     * <p>The camera device faces the same direction as the device's screen.</p>
281     * @see CameraCharacteristics#LENS_FACING
282     */
283    public static final int LENS_FACING_FRONT = 0;
284
285    /**
286     * <p>The camera device faces the opposite direction as the device's screen.</p>
287     * @see CameraCharacteristics#LENS_FACING
288     */
289    public static final int LENS_FACING_BACK = 1;
290
291    /**
292     * <p>The camera device is an external camera, and has no fixed facing relative to the
293     * device's screen.</p>
294     * @see CameraCharacteristics#LENS_FACING
295     */
296    public static final int LENS_FACING_EXTERNAL = 2;
297
298    //
299    // Enumeration values for CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
300    //
301
302    /**
303     * <p>The minimal set of capabilities that every camera
304     * device (regardless of {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel})
305     * supports.</p>
306     * <p>This capability is listed by all devices, and
307     * indicates that the camera device has a feature set
308     * that's comparable to the baseline requirements for the
309     * older android.hardware.Camera API.</p>
310     *
311     * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
312     * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
313     */
314    public static final int REQUEST_AVAILABLE_CAPABILITIES_BACKWARD_COMPATIBLE = 0;
315
316    /**
317     * <p>The camera device can be manually controlled (3A algorithms such
318     * as auto-exposure, and auto-focus can be bypassed).
319     * The camera device supports basic manual control of the sensor image
320     * acquisition related stages. This means the following controls are
321     * guaranteed to be supported:</p>
322     * <ul>
323     * <li>Manual frame duration control<ul>
324     * <li>{@link CaptureRequest#SENSOR_FRAME_DURATION android.sensor.frameDuration}</li>
325     * <li>{@link CameraCharacteristics#SENSOR_INFO_MAX_FRAME_DURATION android.sensor.info.maxFrameDuration}</li>
326     * </ul>
327     * </li>
328     * <li>Manual exposure control<ul>
329     * <li>{@link CaptureRequest#SENSOR_EXPOSURE_TIME android.sensor.exposureTime}</li>
330     * <li>{@link CameraCharacteristics#SENSOR_INFO_EXPOSURE_TIME_RANGE android.sensor.info.exposureTimeRange}</li>
331     * </ul>
332     * </li>
333     * <li>Manual sensitivity control<ul>
334     * <li>{@link CaptureRequest#SENSOR_SENSITIVITY android.sensor.sensitivity}</li>
335     * <li>{@link CameraCharacteristics#SENSOR_INFO_SENSITIVITY_RANGE android.sensor.info.sensitivityRange}</li>
336     * </ul>
337     * </li>
338     * <li>Manual lens control (if the lens is adjustable)<ul>
339     * <li>android.lens.*</li>
340     * </ul>
341     * </li>
342     * <li>Manual flash control (if a flash unit is present)<ul>
343     * <li>android.flash.*</li>
344     * </ul>
345     * </li>
346     * <li>Manual black level locking<ul>
347     * <li>{@link CaptureRequest#BLACK_LEVEL_LOCK android.blackLevel.lock}</li>
348     * </ul>
349     * </li>
350     * </ul>
351     * <p>If any of the above 3A algorithms are enabled, then the camera
352     * device will accurately report the values applied by 3A in the
353     * result.</p>
354     * <p>A given camera device may also support additional manual sensor controls,
355     * but this capability only covers the above list of controls.</p>
356     * <p>If this is supported, {@link CameraCharacteristics#SCALER_STREAM_CONFIGURATION_MAP android.scaler.streamConfigurationMap} will
357     * additionally return a min frame duration that is greater than
358     * zero for each supported size-format combination.</p>
359     *
360     * @see CaptureRequest#BLACK_LEVEL_LOCK
361     * @see CameraCharacteristics#SCALER_STREAM_CONFIGURATION_MAP
362     * @see CaptureRequest#SENSOR_EXPOSURE_TIME
363     * @see CaptureRequest#SENSOR_FRAME_DURATION
364     * @see CameraCharacteristics#SENSOR_INFO_EXPOSURE_TIME_RANGE
365     * @see CameraCharacteristics#SENSOR_INFO_MAX_FRAME_DURATION
366     * @see CameraCharacteristics#SENSOR_INFO_SENSITIVITY_RANGE
367     * @see CaptureRequest#SENSOR_SENSITIVITY
368     * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
369     */
370    public static final int REQUEST_AVAILABLE_CAPABILITIES_MANUAL_SENSOR = 1;
371
372    /**
373     * <p>The camera device post-processing stages can be manually controlled.
374     * The camera device supports basic manual control of the image post-processing
375     * stages. This means the following controls are guaranteed to be supported:</p>
376     * <ul>
377     * <li>
378     * <p>Manual tonemap control</p>
379     * <ul>
380     * <li>{@link CaptureRequest#TONEMAP_CURVE android.tonemap.curve}</li>
381     * <li>{@link CaptureRequest#TONEMAP_MODE android.tonemap.mode}</li>
382     * <li>{@link CameraCharacteristics#TONEMAP_MAX_CURVE_POINTS android.tonemap.maxCurvePoints}</li>
383     * <li>{@link CaptureRequest#TONEMAP_GAMMA android.tonemap.gamma}</li>
384     * <li>{@link CaptureRequest#TONEMAP_PRESET_CURVE android.tonemap.presetCurve}</li>
385     * </ul>
386     * </li>
387     * <li>
388     * <p>Manual white balance control</p>
389     * <ul>
390     * <li>{@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}</li>
391     * <li>{@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains}</li>
392     * </ul>
393     * </li>
394     * <li>Manual lens shading map control<ul>
395     * <li>{@link CaptureRequest#SHADING_MODE android.shading.mode}</li>
396     * <li>{@link CaptureRequest#STATISTICS_LENS_SHADING_MAP_MODE android.statistics.lensShadingMapMode}</li>
397     * <li>android.statistics.lensShadingMap</li>
398     * <li>android.lens.info.shadingMapSize</li>
399     * </ul>
400     * </li>
401     * <li>Manual aberration correction control (if aberration correction is supported)<ul>
402     * <li>{@link CaptureRequest#COLOR_CORRECTION_ABERRATION_MODE android.colorCorrection.aberrationMode}</li>
403     * <li>{@link CameraCharacteristics#COLOR_CORRECTION_AVAILABLE_ABERRATION_MODES android.colorCorrection.availableAberrationModes}</li>
404     * </ul>
405     * </li>
406     * </ul>
407     * <p>If auto white balance is enabled, then the camera device
408     * will accurately report the values applied by AWB in the result.</p>
409     * <p>A given camera device may also support additional post-processing
410     * controls, but this capability only covers the above list of controls.</p>
411     *
412     * @see CaptureRequest#COLOR_CORRECTION_ABERRATION_MODE
413     * @see CameraCharacteristics#COLOR_CORRECTION_AVAILABLE_ABERRATION_MODES
414     * @see CaptureRequest#COLOR_CORRECTION_GAINS
415     * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
416     * @see CaptureRequest#SHADING_MODE
417     * @see CaptureRequest#STATISTICS_LENS_SHADING_MAP_MODE
418     * @see CaptureRequest#TONEMAP_CURVE
419     * @see CaptureRequest#TONEMAP_GAMMA
420     * @see CameraCharacteristics#TONEMAP_MAX_CURVE_POINTS
421     * @see CaptureRequest#TONEMAP_MODE
422     * @see CaptureRequest#TONEMAP_PRESET_CURVE
423     * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
424     */
425    public static final int REQUEST_AVAILABLE_CAPABILITIES_MANUAL_POST_PROCESSING = 2;
426
427    /**
428     * <p>The camera device supports outputting RAW buffers and
429     * metadata for interpreting them.</p>
430     * <p>Devices supporting the RAW capability allow both for
431     * saving DNG files, and for direct application processing of
432     * raw sensor images.</p>
433     * <ul>
434     * <li>RAW_SENSOR is supported as an output format.</li>
435     * <li>The maximum available resolution for RAW_SENSOR streams
436     *   will match either the value in
437     *   {@link CameraCharacteristics#SENSOR_INFO_PIXEL_ARRAY_SIZE android.sensor.info.pixelArraySize} or
438     *   {@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}.</li>
439     * <li>All DNG-related optional metadata entries are provided
440     *   by the camera device.</li>
441     * </ul>
442     *
443     * @see CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE
444     * @see CameraCharacteristics#SENSOR_INFO_PIXEL_ARRAY_SIZE
445     * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
446     */
447    public static final int REQUEST_AVAILABLE_CAPABILITIES_RAW = 3;
448
449    /**
450     * <p>The camera device supports the Zero Shutter Lag reprocessing use case.</p>
451     * <ul>
452     * <li>One input stream is supported, that is, <code>{@link CameraCharacteristics#REQUEST_MAX_NUM_INPUT_STREAMS android.request.maxNumInputStreams} == 1</code>.</li>
453     * <li>OPAQUE is supported as an output/input format, that is,
454     *   StreamConfigurationMap#getOutputSizes(klass) and
455     *   StreamConfigurationMap#getInputSizes(klass) return non empty Size[] and have common
456     *   sizes, where klass is android.media.OpaqueImageRingBufferQueue.class. See
457     *   android.scaler.availableInputOutputFormatsMap for detailed information about
458     *   OPAQUE format.</li>
459     * <li>android.scaler.availableInputOutputFormatsMap has the required map entries.</li>
460     * <li>Using OPAQUE does not cause a frame rate drop
461     *   relative to the sensor's maximum capture rate (at that
462     *   resolution), see android.scaler.availableInputOutputFormatsMap for more details.</li>
463     * <li>OPAQUE will be reprocessable into both YUV_420_888
464     *   and JPEG formats.</li>
465     * <li>The maximum available resolution for OPAQUE streams
466     *   (both input/output) will match the maximum available
467     *   resolution of JPEG streams.</li>
468     * <li>Only below controls are effective for reprocessing requests and
469     *   will be present in capture results, other controls in reprocess
470     *   requests will be ignored by the camera device.<ul>
471     * <li>android.jpeg.*</li>
472     * <li>{@link CaptureRequest#NOISE_REDUCTION_MODE android.noiseReduction.mode}</li>
473     * <li>{@link CaptureRequest#EDGE_MODE android.edge.mode}</li>
474     * </ul>
475     * </li>
476     * </ul>
477     *
478     * @see CaptureRequest#EDGE_MODE
479     * @see CaptureRequest#NOISE_REDUCTION_MODE
480     * @see CameraCharacteristics#REQUEST_MAX_NUM_INPUT_STREAMS
481     * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
482     */
483    public static final int REQUEST_AVAILABLE_CAPABILITIES_OPAQUE_REPROCESSING = 4;
484
485    /**
486     * <p>The camera device supports accurately reporting the sensor settings for many of
487     * the sensor controls while the built-in 3A algorithm is running.  This allows
488     * reporting of sensor settings even when these settings cannot be manually changed.</p>
489     * <p>The values reported for the following controls are guaranteed to be available
490     * in the CaptureResult, including when 3A is enabled:</p>
491     * <ul>
492     * <li>Exposure control<ul>
493     * <li>{@link CaptureRequest#SENSOR_EXPOSURE_TIME android.sensor.exposureTime}</li>
494     * </ul>
495     * </li>
496     * <li>Sensitivity control<ul>
497     * <li>{@link CaptureRequest#SENSOR_SENSITIVITY android.sensor.sensitivity}</li>
498     * </ul>
499     * </li>
500     * <li>Lens controls (if the lens is adjustable)<ul>
501     * <li>{@link CaptureRequest#LENS_FOCUS_DISTANCE android.lens.focusDistance}</li>
502     * <li>{@link CaptureRequest#LENS_APERTURE android.lens.aperture}</li>
503     * </ul>
504     * </li>
505     * </ul>
506     * <p>This capability is a subset of the MANUAL_SENSOR control capability, and will
507     * always be included if the MANUAL_SENSOR capability is available.</p>
508     *
509     * @see CaptureRequest#LENS_APERTURE
510     * @see CaptureRequest#LENS_FOCUS_DISTANCE
511     * @see CaptureRequest#SENSOR_EXPOSURE_TIME
512     * @see CaptureRequest#SENSOR_SENSITIVITY
513     * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
514     */
515    public static final int REQUEST_AVAILABLE_CAPABILITIES_READ_SENSOR_SETTINGS = 5;
516
517    /**
518     * <p>The camera device supports capturing maximum-resolution
519     * images at &gt;= 20 frames per second, in at least the
520     * uncompressed YUV format, when post-processing settings
521     * are set to FAST.</p>
522     * <p>More specifically, this means that a size matching the
523     * camera device's active array size is listed as a
524     * supported size for the YUV_420_888 format in
525     * {@link CameraCharacteristics#SCALER_STREAM_CONFIGURATION_MAP android.scaler.streamConfigurationMap}, the minimum frame
526     * duration for that format and size is &lt;= 1/20 s, and
527     * the {@link CameraCharacteristics#CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES android.control.aeAvailableTargetFpsRanges} entry
528     * lists at least one FPS range where the minimum FPS is</p>
529     * <blockquote>
530     * <p>= 1 / minimumFrameDuration for the maximum-size
531     * YUV_420_888 format.</p>
532     * </blockquote>
533     * <p>In addition, the {@link CameraCharacteristics#SYNC_MAX_LATENCY android.sync.maxLatency} field is
534     * guaranted to have a value between 0 and 4, inclusive.</p>
535     *
536     * @see CameraCharacteristics#CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES
537     * @see CameraCharacteristics#SCALER_STREAM_CONFIGURATION_MAP
538     * @see CameraCharacteristics#SYNC_MAX_LATENCY
539     * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
540     */
541    public static final int REQUEST_AVAILABLE_CAPABILITIES_BURST_CAPTURE = 6;
542
543    /**
544     * <p>The camera device supports the YUV420_888 reprocessing use case, similar as
545     * OPAQUE_REPROCESSING, This capability requires the camera device to support the
546     * following:</p>
547     * <ul>
548     * <li>One input stream is supported, that is, <code>{@link CameraCharacteristics#REQUEST_MAX_NUM_INPUT_STREAMS android.request.maxNumInputStreams} == 1</code>.</li>
549     * <li>YUV420_888 is supported as a common format for both input and output, that is,
550     *   StreamConfigurationMap#getOutputSizes(YUV420_888) and
551     *   StreamConfigurationMap#getInputSizes(YUV420_888) return non empty Size[] and have
552     *   common sizes.</li>
553     * <li>android.scaler.availableInputOutputFormatsMap has the required map entries.</li>
554     * <li>Using YUV420_888 does not cause a frame rate drop
555     *   relative to the sensor's maximum capture rate (at that
556     *   resolution), see android.scaler.availableInputOutputFormatsMap for more details.</li>
557     * <li>YUV420_888 will be reprocessable into both YUV_420_888
558     *   and JPEG formats.</li>
559     * <li>The maximum available resolution for YUV420_888 streams
560     *   (both input/output) will match the maximum available
561     *   resolution of JPEG streams.</li>
562     * <li>Only the below controls are effective for reprocessing requests and will be
563     *   present in capture results. The reprocess requests are from the original capture
564     *   results that are assocaited with the intermidate YUV420_888 output buffers.
565     *   All other controls in the reprocess requests will be ignored by the camera device.<ul>
566     * <li>android.jpeg.*</li>
567     * <li>{@link CaptureRequest#NOISE_REDUCTION_MODE android.noiseReduction.mode}</li>
568     * <li>{@link CaptureRequest#EDGE_MODE android.edge.mode}</li>
569     * <li>{@link CaptureRequest#REPROCESS_EFFECTIVE_EXPOSURE_FACTOR android.reprocess.effectiveExposureFactor}</li>
570     * </ul>
571     * </li>
572     * </ul>
573     *
574     * @see CaptureRequest#EDGE_MODE
575     * @see CaptureRequest#NOISE_REDUCTION_MODE
576     * @see CaptureRequest#REPROCESS_EFFECTIVE_EXPOSURE_FACTOR
577     * @see CameraCharacteristics#REQUEST_MAX_NUM_INPUT_STREAMS
578     * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
579     */
580    public static final int REQUEST_AVAILABLE_CAPABILITIES_YUV_REPROCESSING = 7;
581
582    //
583    // Enumeration values for CameraCharacteristics#SCALER_CROPPING_TYPE
584    //
585
586    /**
587     * <p>The camera device only supports centered crop regions.</p>
588     * @see CameraCharacteristics#SCALER_CROPPING_TYPE
589     */
590    public static final int SCALER_CROPPING_TYPE_CENTER_ONLY = 0;
591
592    /**
593     * <p>The camera device supports arbitrarily chosen crop regions.</p>
594     * @see CameraCharacteristics#SCALER_CROPPING_TYPE
595     */
596    public static final int SCALER_CROPPING_TYPE_FREEFORM = 1;
597
598    //
599    // Enumeration values for CameraCharacteristics#SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
600    //
601
602    /**
603     * @see CameraCharacteristics#SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
604     */
605    public static final int SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_RGGB = 0;
606
607    /**
608     * @see CameraCharacteristics#SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
609     */
610    public static final int SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_GRBG = 1;
611
612    /**
613     * @see CameraCharacteristics#SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
614     */
615    public static final int SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_GBRG = 2;
616
617    /**
618     * @see CameraCharacteristics#SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
619     */
620    public static final int SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_BGGR = 3;
621
622    /**
623     * <p>Sensor is not Bayer; output has 3 16-bit
624     * values for each pixel, instead of just 1 16-bit value
625     * per pixel.</p>
626     * @see CameraCharacteristics#SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
627     */
628    public static final int SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_RGB = 4;
629
630    //
631    // Enumeration values for CameraCharacteristics#SENSOR_INFO_TIMESTAMP_SOURCE
632    //
633
634    /**
635     * <p>Timestamps from {@link CaptureResult#SENSOR_TIMESTAMP android.sensor.timestamp} are in nanoseconds and monotonic,
636     * but can not be compared to timestamps from other subsystems
637     * (e.g. accelerometer, gyro etc.), or other instances of the same or different
638     * camera devices in the same system. Timestamps between streams and results for
639     * a single camera instance are comparable, and the timestamps for all buffers
640     * and the result metadata generated by a single capture are identical.</p>
641     *
642     * @see CaptureResult#SENSOR_TIMESTAMP
643     * @see CameraCharacteristics#SENSOR_INFO_TIMESTAMP_SOURCE
644     */
645    public static final int SENSOR_INFO_TIMESTAMP_SOURCE_UNKNOWN = 0;
646
647    /**
648     * <p>Timestamps from {@link CaptureResult#SENSOR_TIMESTAMP android.sensor.timestamp} are in the same timebase as
649     * android.os.SystemClock#elapsedRealtimeNanos(),
650     * and they can be compared to other timestamps using that base.</p>
651     *
652     * @see CaptureResult#SENSOR_TIMESTAMP
653     * @see CameraCharacteristics#SENSOR_INFO_TIMESTAMP_SOURCE
654     */
655    public static final int SENSOR_INFO_TIMESTAMP_SOURCE_REALTIME = 1;
656
657    //
658    // Enumeration values for CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
659    //
660
661    /**
662     * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
663     */
664    public static final int SENSOR_REFERENCE_ILLUMINANT1_DAYLIGHT = 1;
665
666    /**
667     * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
668     */
669    public static final int SENSOR_REFERENCE_ILLUMINANT1_FLUORESCENT = 2;
670
671    /**
672     * <p>Incandescent light</p>
673     * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
674     */
675    public static final int SENSOR_REFERENCE_ILLUMINANT1_TUNGSTEN = 3;
676
677    /**
678     * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
679     */
680    public static final int SENSOR_REFERENCE_ILLUMINANT1_FLASH = 4;
681
682    /**
683     * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
684     */
685    public static final int SENSOR_REFERENCE_ILLUMINANT1_FINE_WEATHER = 9;
686
687    /**
688     * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
689     */
690    public static final int SENSOR_REFERENCE_ILLUMINANT1_CLOUDY_WEATHER = 10;
691
692    /**
693     * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
694     */
695    public static final int SENSOR_REFERENCE_ILLUMINANT1_SHADE = 11;
696
697    /**
698     * <p>D 5700 - 7100K</p>
699     * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
700     */
701    public static final int SENSOR_REFERENCE_ILLUMINANT1_DAYLIGHT_FLUORESCENT = 12;
702
703    /**
704     * <p>N 4600 - 5400K</p>
705     * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
706     */
707    public static final int SENSOR_REFERENCE_ILLUMINANT1_DAY_WHITE_FLUORESCENT = 13;
708
709    /**
710     * <p>W 3900 - 4500K</p>
711     * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
712     */
713    public static final int SENSOR_REFERENCE_ILLUMINANT1_COOL_WHITE_FLUORESCENT = 14;
714
715    /**
716     * <p>WW 3200 - 3700K</p>
717     * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
718     */
719    public static final int SENSOR_REFERENCE_ILLUMINANT1_WHITE_FLUORESCENT = 15;
720
721    /**
722     * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
723     */
724    public static final int SENSOR_REFERENCE_ILLUMINANT1_STANDARD_A = 17;
725
726    /**
727     * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
728     */
729    public static final int SENSOR_REFERENCE_ILLUMINANT1_STANDARD_B = 18;
730
731    /**
732     * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
733     */
734    public static final int SENSOR_REFERENCE_ILLUMINANT1_STANDARD_C = 19;
735
736    /**
737     * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
738     */
739    public static final int SENSOR_REFERENCE_ILLUMINANT1_D55 = 20;
740
741    /**
742     * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
743     */
744    public static final int SENSOR_REFERENCE_ILLUMINANT1_D65 = 21;
745
746    /**
747     * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
748     */
749    public static final int SENSOR_REFERENCE_ILLUMINANT1_D75 = 22;
750
751    /**
752     * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
753     */
754    public static final int SENSOR_REFERENCE_ILLUMINANT1_D50 = 23;
755
756    /**
757     * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
758     */
759    public static final int SENSOR_REFERENCE_ILLUMINANT1_ISO_STUDIO_TUNGSTEN = 24;
760
761    //
762    // Enumeration values for CameraCharacteristics#LED_AVAILABLE_LEDS
763    //
764
765    /**
766     * <p>android.led.transmit control is used.</p>
767     * @see CameraCharacteristics#LED_AVAILABLE_LEDS
768     * @hide
769     */
770    public static final int LED_AVAILABLE_LEDS_TRANSMIT = 0;
771
772    //
773    // Enumeration values for CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
774    //
775
776    /**
777     * <p>This camera device has only limited capabilities.</p>
778     * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
779     */
780    public static final int INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED = 0;
781
782    /**
783     * <p>This camera device is capable of supporting advanced imaging applications.</p>
784     * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
785     */
786    public static final int INFO_SUPPORTED_HARDWARE_LEVEL_FULL = 1;
787
788    /**
789     * <p>This camera device is running in backward compatibility mode.</p>
790     * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
791     */
792    public static final int INFO_SUPPORTED_HARDWARE_LEVEL_LEGACY = 2;
793
794    //
795    // Enumeration values for CameraCharacteristics#SYNC_MAX_LATENCY
796    //
797
798    /**
799     * <p>Every frame has the requests immediately applied.</p>
800     * <p>Furthermore for all results,
801     * <code>android.sync.frameNumber == CaptureResult#getFrameNumber()</code></p>
802     * <p>Changing controls over multiple requests one after another will
803     * produce results that have those controls applied atomically
804     * each frame.</p>
805     * <p>All FULL capability devices will have this as their maxLatency.</p>
806     * @see CameraCharacteristics#SYNC_MAX_LATENCY
807     */
808    public static final int SYNC_MAX_LATENCY_PER_FRAME_CONTROL = 0;
809
810    /**
811     * <p>Each new frame has some subset (potentially the entire set)
812     * of the past requests applied to the camera settings.</p>
813     * <p>By submitting a series of identical requests, the camera device
814     * will eventually have the camera settings applied, but it is
815     * unknown when that exact point will be.</p>
816     * <p>All LEGACY capability devices will have this as their maxLatency.</p>
817     * @see CameraCharacteristics#SYNC_MAX_LATENCY
818     */
819    public static final int SYNC_MAX_LATENCY_UNKNOWN = -1;
820
821    //
822    // Enumeration values for CaptureRequest#COLOR_CORRECTION_MODE
823    //
824
825    /**
826     * <p>Use the {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform} matrix
827     * and {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} to do color conversion.</p>
828     * <p>All advanced white balance adjustments (not specified
829     * by our white balance pipeline) must be disabled.</p>
830     * <p>If AWB is enabled with <code>{@link CaptureRequest#CONTROL_AWB_MODE android.control.awbMode} != OFF</code>, then
831     * TRANSFORM_MATRIX is ignored. The camera device will override
832     * this value to either FAST or HIGH_QUALITY.</p>
833     *
834     * @see CaptureRequest#COLOR_CORRECTION_GAINS
835     * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
836     * @see CaptureRequest#CONTROL_AWB_MODE
837     * @see CaptureRequest#COLOR_CORRECTION_MODE
838     */
839    public static final int COLOR_CORRECTION_MODE_TRANSFORM_MATRIX = 0;
840
841    /**
842     * <p>Color correction processing must not slow down
843     * capture rate relative to sensor raw output.</p>
844     * <p>Advanced white balance adjustments above and beyond
845     * the specified white balance pipeline may be applied.</p>
846     * <p>If AWB is enabled with <code>{@link CaptureRequest#CONTROL_AWB_MODE android.control.awbMode} != OFF</code>, then
847     * the camera device uses the last frame's AWB values
848     * (or defaults if AWB has never been run).</p>
849     *
850     * @see CaptureRequest#CONTROL_AWB_MODE
851     * @see CaptureRequest#COLOR_CORRECTION_MODE
852     */
853    public static final int COLOR_CORRECTION_MODE_FAST = 1;
854
855    /**
856     * <p>Color correction processing operates at improved
857     * quality but reduced capture rate (relative to sensor raw
858     * output).</p>
859     * <p>Advanced white balance adjustments above and beyond
860     * the specified white balance pipeline may be applied.</p>
861     * <p>If AWB is enabled with <code>{@link CaptureRequest#CONTROL_AWB_MODE android.control.awbMode} != OFF</code>, then
862     * the camera device uses the last frame's AWB values
863     * (or defaults if AWB has never been run).</p>
864     *
865     * @see CaptureRequest#CONTROL_AWB_MODE
866     * @see CaptureRequest#COLOR_CORRECTION_MODE
867     */
868    public static final int COLOR_CORRECTION_MODE_HIGH_QUALITY = 2;
869
870    //
871    // Enumeration values for CaptureRequest#COLOR_CORRECTION_ABERRATION_MODE
872    //
873
874    /**
875     * <p>No aberration correction is applied.</p>
876     * @see CaptureRequest#COLOR_CORRECTION_ABERRATION_MODE
877     */
878    public static final int COLOR_CORRECTION_ABERRATION_MODE_OFF = 0;
879
880    /**
881     * <p>Aberration correction will not slow down capture rate
882     * relative to sensor raw output.</p>
883     * @see CaptureRequest#COLOR_CORRECTION_ABERRATION_MODE
884     */
885    public static final int COLOR_CORRECTION_ABERRATION_MODE_FAST = 1;
886
887    /**
888     * <p>Aberration correction operates at improved quality but reduced
889     * capture rate (relative to sensor raw output).</p>
890     * @see CaptureRequest#COLOR_CORRECTION_ABERRATION_MODE
891     */
892    public static final int COLOR_CORRECTION_ABERRATION_MODE_HIGH_QUALITY = 2;
893
894    //
895    // Enumeration values for CaptureRequest#CONTROL_AE_ANTIBANDING_MODE
896    //
897
898    /**
899     * <p>The camera device will not adjust exposure duration to
900     * avoid banding problems.</p>
901     * @see CaptureRequest#CONTROL_AE_ANTIBANDING_MODE
902     */
903    public static final int CONTROL_AE_ANTIBANDING_MODE_OFF = 0;
904
905    /**
906     * <p>The camera device will adjust exposure duration to
907     * avoid banding problems with 50Hz illumination sources.</p>
908     * @see CaptureRequest#CONTROL_AE_ANTIBANDING_MODE
909     */
910    public static final int CONTROL_AE_ANTIBANDING_MODE_50HZ = 1;
911
912    /**
913     * <p>The camera device will adjust exposure duration to
914     * avoid banding problems with 60Hz illumination
915     * sources.</p>
916     * @see CaptureRequest#CONTROL_AE_ANTIBANDING_MODE
917     */
918    public static final int CONTROL_AE_ANTIBANDING_MODE_60HZ = 2;
919
920    /**
921     * <p>The camera device will automatically adapt its
922     * antibanding routine to the current illumination
923     * condition. This is the default mode if AUTO is
924     * available on given camera device.</p>
925     * @see CaptureRequest#CONTROL_AE_ANTIBANDING_MODE
926     */
927    public static final int CONTROL_AE_ANTIBANDING_MODE_AUTO = 3;
928
929    //
930    // Enumeration values for CaptureRequest#CONTROL_AE_MODE
931    //
932
933    /**
934     * <p>The camera device's autoexposure routine is disabled.</p>
935     * <p>The application-selected {@link CaptureRequest#SENSOR_EXPOSURE_TIME android.sensor.exposureTime},
936     * {@link CaptureRequest#SENSOR_SENSITIVITY android.sensor.sensitivity} and
937     * {@link CaptureRequest#SENSOR_FRAME_DURATION android.sensor.frameDuration} are used by the camera
938     * device, along with android.flash.* fields, if there's
939     * a flash unit for this camera device.</p>
940     * <p>Note that auto-white balance (AWB) and auto-focus (AF)
941     * behavior is device dependent when AE is in OFF mode.
942     * To have consistent behavior across different devices,
943     * it is recommended to either set AWB and AF to OFF mode
944     * or lock AWB and AF before setting AE to OFF.
945     * See {@link CaptureRequest#CONTROL_AWB_MODE android.control.awbMode}, {@link CaptureRequest#CONTROL_AF_MODE android.control.afMode},
946     * {@link CaptureRequest#CONTROL_AWB_LOCK android.control.awbLock}, and {@link CaptureRequest#CONTROL_AF_TRIGGER android.control.afTrigger}
947     * for more details.</p>
948     * <p>LEGACY devices do not support the OFF mode and will
949     * override attempts to use this value to ON.</p>
950     *
951     * @see CaptureRequest#CONTROL_AF_MODE
952     * @see CaptureRequest#CONTROL_AF_TRIGGER
953     * @see CaptureRequest#CONTROL_AWB_LOCK
954     * @see CaptureRequest#CONTROL_AWB_MODE
955     * @see CaptureRequest#SENSOR_EXPOSURE_TIME
956     * @see CaptureRequest#SENSOR_FRAME_DURATION
957     * @see CaptureRequest#SENSOR_SENSITIVITY
958     * @see CaptureRequest#CONTROL_AE_MODE
959     */
960    public static final int CONTROL_AE_MODE_OFF = 0;
961
962    /**
963     * <p>The camera device's autoexposure routine is active,
964     * with no flash control.</p>
965     * <p>The application's values for
966     * {@link CaptureRequest#SENSOR_EXPOSURE_TIME android.sensor.exposureTime},
967     * {@link CaptureRequest#SENSOR_SENSITIVITY android.sensor.sensitivity}, and
968     * {@link CaptureRequest#SENSOR_FRAME_DURATION android.sensor.frameDuration} are ignored. The
969     * application has control over the various
970     * android.flash.* fields.</p>
971     *
972     * @see CaptureRequest#SENSOR_EXPOSURE_TIME
973     * @see CaptureRequest#SENSOR_FRAME_DURATION
974     * @see CaptureRequest#SENSOR_SENSITIVITY
975     * @see CaptureRequest#CONTROL_AE_MODE
976     */
977    public static final int CONTROL_AE_MODE_ON = 1;
978
979    /**
980     * <p>Like ON, except that the camera device also controls
981     * the camera's flash unit, firing it in low-light
982     * conditions.</p>
983     * <p>The flash may be fired during a precapture sequence
984     * (triggered by {@link CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER android.control.aePrecaptureTrigger}) and
985     * may be fired for captures for which the
986     * {@link CaptureRequest#CONTROL_CAPTURE_INTENT android.control.captureIntent} field is set to
987     * STILL_CAPTURE</p>
988     *
989     * @see CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
990     * @see CaptureRequest#CONTROL_CAPTURE_INTENT
991     * @see CaptureRequest#CONTROL_AE_MODE
992     */
993    public static final int CONTROL_AE_MODE_ON_AUTO_FLASH = 2;
994
995    /**
996     * <p>Like ON, except that the camera device also controls
997     * the camera's flash unit, always firing it for still
998     * captures.</p>
999     * <p>The flash may be fired during a precapture sequence
1000     * (triggered by {@link CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER android.control.aePrecaptureTrigger}) and
1001     * will always be fired for captures for which the
1002     * {@link CaptureRequest#CONTROL_CAPTURE_INTENT android.control.captureIntent} field is set to
1003     * STILL_CAPTURE</p>
1004     *
1005     * @see CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
1006     * @see CaptureRequest#CONTROL_CAPTURE_INTENT
1007     * @see CaptureRequest#CONTROL_AE_MODE
1008     */
1009    public static final int CONTROL_AE_MODE_ON_ALWAYS_FLASH = 3;
1010
1011    /**
1012     * <p>Like ON_AUTO_FLASH, but with automatic red eye
1013     * reduction.</p>
1014     * <p>If deemed necessary by the camera device, a red eye
1015     * reduction flash will fire during the precapture
1016     * sequence.</p>
1017     * @see CaptureRequest#CONTROL_AE_MODE
1018     */
1019    public static final int CONTROL_AE_MODE_ON_AUTO_FLASH_REDEYE = 4;
1020
1021    //
1022    // Enumeration values for CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
1023    //
1024
1025    /**
1026     * <p>The trigger is idle.</p>
1027     * @see CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
1028     */
1029    public static final int CONTROL_AE_PRECAPTURE_TRIGGER_IDLE = 0;
1030
1031    /**
1032     * <p>The precapture metering sequence will be started
1033     * by the camera device.</p>
1034     * <p>The exact effect of the precapture trigger depends on
1035     * the current AE mode and state.</p>
1036     * @see CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
1037     */
1038    public static final int CONTROL_AE_PRECAPTURE_TRIGGER_START = 1;
1039
1040    //
1041    // Enumeration values for CaptureRequest#CONTROL_AF_MODE
1042    //
1043
1044    /**
1045     * <p>The auto-focus routine does not control the lens;
1046     * {@link CaptureRequest#LENS_FOCUS_DISTANCE android.lens.focusDistance} is controlled by the
1047     * application.</p>
1048     *
1049     * @see CaptureRequest#LENS_FOCUS_DISTANCE
1050     * @see CaptureRequest#CONTROL_AF_MODE
1051     */
1052    public static final int CONTROL_AF_MODE_OFF = 0;
1053
1054    /**
1055     * <p>Basic automatic focus mode.</p>
1056     * <p>In this mode, the lens does not move unless
1057     * the autofocus trigger action is called. When that trigger
1058     * is activated, AF will transition to ACTIVE_SCAN, then to
1059     * the outcome of the scan (FOCUSED or NOT_FOCUSED).</p>
1060     * <p>Always supported if lens is not fixed focus.</p>
1061     * <p>Use {@link CameraCharacteristics#LENS_INFO_MINIMUM_FOCUS_DISTANCE android.lens.info.minimumFocusDistance} to determine if lens
1062     * is fixed-focus.</p>
1063     * <p>Triggering AF_CANCEL resets the lens position to default,
1064     * and sets the AF state to INACTIVE.</p>
1065     *
1066     * @see CameraCharacteristics#LENS_INFO_MINIMUM_FOCUS_DISTANCE
1067     * @see CaptureRequest#CONTROL_AF_MODE
1068     */
1069    public static final int CONTROL_AF_MODE_AUTO = 1;
1070
1071    /**
1072     * <p>Close-up focusing mode.</p>
1073     * <p>In this mode, the lens does not move unless the
1074     * autofocus trigger action is called. When that trigger is
1075     * activated, AF will transition to ACTIVE_SCAN, then to
1076     * the outcome of the scan (FOCUSED or NOT_FOCUSED). This
1077     * mode is optimized for focusing on objects very close to
1078     * the camera.</p>
1079     * <p>When that trigger is activated, AF will transition to
1080     * ACTIVE_SCAN, then to the outcome of the scan (FOCUSED or
1081     * NOT_FOCUSED). Triggering cancel AF resets the lens
1082     * position to default, and sets the AF state to
1083     * INACTIVE.</p>
1084     * @see CaptureRequest#CONTROL_AF_MODE
1085     */
1086    public static final int CONTROL_AF_MODE_MACRO = 2;
1087
1088    /**
1089     * <p>In this mode, the AF algorithm modifies the lens
1090     * position continually to attempt to provide a
1091     * constantly-in-focus image stream.</p>
1092     * <p>The focusing behavior should be suitable for good quality
1093     * video recording; typically this means slower focus
1094     * movement and no overshoots. When the AF trigger is not
1095     * involved, the AF algorithm should start in INACTIVE state,
1096     * and then transition into PASSIVE_SCAN and PASSIVE_FOCUSED
1097     * states as appropriate. When the AF trigger is activated,
1098     * the algorithm should immediately transition into
1099     * AF_FOCUSED or AF_NOT_FOCUSED as appropriate, and lock the
1100     * lens position until a cancel AF trigger is received.</p>
1101     * <p>Once cancel is received, the algorithm should transition
1102     * back to INACTIVE and resume passive scan. Note that this
1103     * behavior is not identical to CONTINUOUS_PICTURE, since an
1104     * ongoing PASSIVE_SCAN must immediately be
1105     * canceled.</p>
1106     * @see CaptureRequest#CONTROL_AF_MODE
1107     */
1108    public static final int CONTROL_AF_MODE_CONTINUOUS_VIDEO = 3;
1109
1110    /**
1111     * <p>In this mode, the AF algorithm modifies the lens
1112     * position continually to attempt to provide a
1113     * constantly-in-focus image stream.</p>
1114     * <p>The focusing behavior should be suitable for still image
1115     * capture; typically this means focusing as fast as
1116     * possible. When the AF trigger is not involved, the AF
1117     * algorithm should start in INACTIVE state, and then
1118     * transition into PASSIVE_SCAN and PASSIVE_FOCUSED states as
1119     * appropriate as it attempts to maintain focus. When the AF
1120     * trigger is activated, the algorithm should finish its
1121     * PASSIVE_SCAN if active, and then transition into
1122     * AF_FOCUSED or AF_NOT_FOCUSED as appropriate, and lock the
1123     * lens position until a cancel AF trigger is received.</p>
1124     * <p>When the AF cancel trigger is activated, the algorithm
1125     * should transition back to INACTIVE and then act as if it
1126     * has just been started.</p>
1127     * @see CaptureRequest#CONTROL_AF_MODE
1128     */
1129    public static final int CONTROL_AF_MODE_CONTINUOUS_PICTURE = 4;
1130
1131    /**
1132     * <p>Extended depth of field (digital focus) mode.</p>
1133     * <p>The camera device will produce images with an extended
1134     * depth of field automatically; no special focusing
1135     * operations need to be done before taking a picture.</p>
1136     * <p>AF triggers are ignored, and the AF state will always be
1137     * INACTIVE.</p>
1138     * @see CaptureRequest#CONTROL_AF_MODE
1139     */
1140    public static final int CONTROL_AF_MODE_EDOF = 5;
1141
1142    //
1143    // Enumeration values for CaptureRequest#CONTROL_AF_TRIGGER
1144    //
1145
1146    /**
1147     * <p>The trigger is idle.</p>
1148     * @see CaptureRequest#CONTROL_AF_TRIGGER
1149     */
1150    public static final int CONTROL_AF_TRIGGER_IDLE = 0;
1151
1152    /**
1153     * <p>Autofocus will trigger now.</p>
1154     * @see CaptureRequest#CONTROL_AF_TRIGGER
1155     */
1156    public static final int CONTROL_AF_TRIGGER_START = 1;
1157
1158    /**
1159     * <p>Autofocus will return to its initial
1160     * state, and cancel any currently active trigger.</p>
1161     * @see CaptureRequest#CONTROL_AF_TRIGGER
1162     */
1163    public static final int CONTROL_AF_TRIGGER_CANCEL = 2;
1164
1165    //
1166    // Enumeration values for CaptureRequest#CONTROL_AWB_MODE
1167    //
1168
1169    /**
1170     * <p>The camera device's auto-white balance routine is disabled.</p>
1171     * <p>The application-selected color transform matrix
1172     * ({@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}) and gains
1173     * ({@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains}) are used by the camera
1174     * device for manual white balance control.</p>
1175     *
1176     * @see CaptureRequest#COLOR_CORRECTION_GAINS
1177     * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
1178     * @see CaptureRequest#CONTROL_AWB_MODE
1179     */
1180    public static final int CONTROL_AWB_MODE_OFF = 0;
1181
1182    /**
1183     * <p>The camera device's auto-white balance routine is active.</p>
1184     * <p>The application's values for {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}
1185     * and {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} are ignored.
1186     * For devices that support the MANUAL_POST_PROCESSING capability, the
1187     * values used by the camera device for the transform and gains
1188     * will be available in the capture result for this request.</p>
1189     *
1190     * @see CaptureRequest#COLOR_CORRECTION_GAINS
1191     * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
1192     * @see CaptureRequest#CONTROL_AWB_MODE
1193     */
1194    public static final int CONTROL_AWB_MODE_AUTO = 1;
1195
1196    /**
1197     * <p>The camera device's auto-white balance routine is disabled;
1198     * the camera device uses incandescent light as the assumed scene
1199     * illumination for white balance.</p>
1200     * <p>While the exact white balance transforms are up to the
1201     * camera device, they will approximately match the CIE
1202     * standard illuminant A.</p>
1203     * <p>The application's values for {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}
1204     * and {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} are ignored.
1205     * For devices that support the MANUAL_POST_PROCESSING capability, the
1206     * values used by the camera device for the transform and gains
1207     * will be available in the capture result for this request.</p>
1208     *
1209     * @see CaptureRequest#COLOR_CORRECTION_GAINS
1210     * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
1211     * @see CaptureRequest#CONTROL_AWB_MODE
1212     */
1213    public static final int CONTROL_AWB_MODE_INCANDESCENT = 2;
1214
1215    /**
1216     * <p>The camera device's auto-white balance routine is disabled;
1217     * the camera device uses fluorescent light as the assumed scene
1218     * illumination for white balance.</p>
1219     * <p>While the exact white balance transforms are up to the
1220     * camera device, they will approximately match the CIE
1221     * standard illuminant F2.</p>
1222     * <p>The application's values for {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}
1223     * and {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} are ignored.
1224     * For devices that support the MANUAL_POST_PROCESSING capability, the
1225     * values used by the camera device for the transform and gains
1226     * will be available in the capture result for this request.</p>
1227     *
1228     * @see CaptureRequest#COLOR_CORRECTION_GAINS
1229     * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
1230     * @see CaptureRequest#CONTROL_AWB_MODE
1231     */
1232    public static final int CONTROL_AWB_MODE_FLUORESCENT = 3;
1233
1234    /**
1235     * <p>The camera device's auto-white balance routine is disabled;
1236     * the camera device uses warm fluorescent light as the assumed scene
1237     * illumination for white balance.</p>
1238     * <p>While the exact white balance transforms are up to the
1239     * camera device, they will approximately match the CIE
1240     * standard illuminant F4.</p>
1241     * <p>The application's values for {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}
1242     * and {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} are ignored.
1243     * For devices that support the MANUAL_POST_PROCESSING capability, the
1244     * values used by the camera device for the transform and gains
1245     * will be available in the capture result for this request.</p>
1246     *
1247     * @see CaptureRequest#COLOR_CORRECTION_GAINS
1248     * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
1249     * @see CaptureRequest#CONTROL_AWB_MODE
1250     */
1251    public static final int CONTROL_AWB_MODE_WARM_FLUORESCENT = 4;
1252
1253    /**
1254     * <p>The camera device's auto-white balance routine is disabled;
1255     * the camera device uses daylight light as the assumed scene
1256     * illumination for white balance.</p>
1257     * <p>While the exact white balance transforms are up to the
1258     * camera device, they will approximately match the CIE
1259     * standard illuminant D65.</p>
1260     * <p>The application's values for {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}
1261     * and {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} are ignored.
1262     * For devices that support the MANUAL_POST_PROCESSING capability, the
1263     * values used by the camera device for the transform and gains
1264     * will be available in the capture result for this request.</p>
1265     *
1266     * @see CaptureRequest#COLOR_CORRECTION_GAINS
1267     * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
1268     * @see CaptureRequest#CONTROL_AWB_MODE
1269     */
1270    public static final int CONTROL_AWB_MODE_DAYLIGHT = 5;
1271
1272    /**
1273     * <p>The camera device's auto-white balance routine is disabled;
1274     * the camera device uses cloudy daylight light as the assumed scene
1275     * illumination for white balance.</p>
1276     * <p>The application's values for {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}
1277     * and {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} are ignored.
1278     * For devices that support the MANUAL_POST_PROCESSING capability, the
1279     * values used by the camera device for the transform and gains
1280     * will be available in the capture result for this request.</p>
1281     *
1282     * @see CaptureRequest#COLOR_CORRECTION_GAINS
1283     * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
1284     * @see CaptureRequest#CONTROL_AWB_MODE
1285     */
1286    public static final int CONTROL_AWB_MODE_CLOUDY_DAYLIGHT = 6;
1287
1288    /**
1289     * <p>The camera device's auto-white balance routine is disabled;
1290     * the camera device uses twilight light as the assumed scene
1291     * illumination for white balance.</p>
1292     * <p>The application's values for {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}
1293     * and {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} are ignored.
1294     * For devices that support the MANUAL_POST_PROCESSING capability, the
1295     * values used by the camera device for the transform and gains
1296     * will be available in the capture result for this request.</p>
1297     *
1298     * @see CaptureRequest#COLOR_CORRECTION_GAINS
1299     * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
1300     * @see CaptureRequest#CONTROL_AWB_MODE
1301     */
1302    public static final int CONTROL_AWB_MODE_TWILIGHT = 7;
1303
1304    /**
1305     * <p>The camera device's auto-white balance routine is disabled;
1306     * the camera device uses shade light as the assumed scene
1307     * illumination for white balance.</p>
1308     * <p>The application's values for {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}
1309     * and {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} are ignored.
1310     * For devices that support the MANUAL_POST_PROCESSING capability, the
1311     * values used by the camera device for the transform and gains
1312     * will be available in the capture result for this request.</p>
1313     *
1314     * @see CaptureRequest#COLOR_CORRECTION_GAINS
1315     * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
1316     * @see CaptureRequest#CONTROL_AWB_MODE
1317     */
1318    public static final int CONTROL_AWB_MODE_SHADE = 8;
1319
1320    //
1321    // Enumeration values for CaptureRequest#CONTROL_CAPTURE_INTENT
1322    //
1323
1324    /**
1325     * <p>The goal of this request doesn't fall into the other
1326     * categories. The camera device will default to preview-like
1327     * behavior.</p>
1328     * @see CaptureRequest#CONTROL_CAPTURE_INTENT
1329     */
1330    public static final int CONTROL_CAPTURE_INTENT_CUSTOM = 0;
1331
1332    /**
1333     * <p>This request is for a preview-like use case.</p>
1334     * <p>The precapture trigger may be used to start off a metering
1335     * w/flash sequence.</p>
1336     * @see CaptureRequest#CONTROL_CAPTURE_INTENT
1337     */
1338    public static final int CONTROL_CAPTURE_INTENT_PREVIEW = 1;
1339
1340    /**
1341     * <p>This request is for a still capture-type
1342     * use case.</p>
1343     * <p>If the flash unit is under automatic control, it may fire as needed.</p>
1344     * @see CaptureRequest#CONTROL_CAPTURE_INTENT
1345     */
1346    public static final int CONTROL_CAPTURE_INTENT_STILL_CAPTURE = 2;
1347
1348    /**
1349     * <p>This request is for a video recording
1350     * use case.</p>
1351     * @see CaptureRequest#CONTROL_CAPTURE_INTENT
1352     */
1353    public static final int CONTROL_CAPTURE_INTENT_VIDEO_RECORD = 3;
1354
1355    /**
1356     * <p>This request is for a video snapshot (still
1357     * image while recording video) use case.</p>
1358     * <p>The camera device should take the highest-quality image
1359     * possible (given the other settings) without disrupting the
1360     * frame rate of video recording.  </p>
1361     * @see CaptureRequest#CONTROL_CAPTURE_INTENT
1362     */
1363    public static final int CONTROL_CAPTURE_INTENT_VIDEO_SNAPSHOT = 4;
1364
1365    /**
1366     * <p>This request is for a ZSL usecase; the
1367     * application will stream full-resolution images and
1368     * reprocess one or several later for a final
1369     * capture.</p>
1370     * @see CaptureRequest#CONTROL_CAPTURE_INTENT
1371     */
1372    public static final int CONTROL_CAPTURE_INTENT_ZERO_SHUTTER_LAG = 5;
1373
1374    /**
1375     * <p>This request is for manual capture use case where
1376     * the applications want to directly control the capture parameters.</p>
1377     * <p>For example, the application may wish to manually control
1378     * {@link CaptureRequest#SENSOR_EXPOSURE_TIME android.sensor.exposureTime}, {@link CaptureRequest#SENSOR_SENSITIVITY android.sensor.sensitivity}, etc.</p>
1379     *
1380     * @see CaptureRequest#SENSOR_EXPOSURE_TIME
1381     * @see CaptureRequest#SENSOR_SENSITIVITY
1382     * @see CaptureRequest#CONTROL_CAPTURE_INTENT
1383     */
1384    public static final int CONTROL_CAPTURE_INTENT_MANUAL = 6;
1385
1386    //
1387    // Enumeration values for CaptureRequest#CONTROL_EFFECT_MODE
1388    //
1389
1390    /**
1391     * <p>No color effect will be applied.</p>
1392     * @see CaptureRequest#CONTROL_EFFECT_MODE
1393     */
1394    public static final int CONTROL_EFFECT_MODE_OFF = 0;
1395
1396    /**
1397     * <p>A "monocolor" effect where the image is mapped into
1398     * a single color.</p>
1399     * <p>This will typically be grayscale.</p>
1400     * @see CaptureRequest#CONTROL_EFFECT_MODE
1401     */
1402    public static final int CONTROL_EFFECT_MODE_MONO = 1;
1403
1404    /**
1405     * <p>A "photo-negative" effect where the image's colors
1406     * are inverted.</p>
1407     * @see CaptureRequest#CONTROL_EFFECT_MODE
1408     */
1409    public static final int CONTROL_EFFECT_MODE_NEGATIVE = 2;
1410
1411    /**
1412     * <p>A "solarisation" effect (Sabattier effect) where the
1413     * image is wholly or partially reversed in
1414     * tone.</p>
1415     * @see CaptureRequest#CONTROL_EFFECT_MODE
1416     */
1417    public static final int CONTROL_EFFECT_MODE_SOLARIZE = 3;
1418
1419    /**
1420     * <p>A "sepia" effect where the image is mapped into warm
1421     * gray, red, and brown tones.</p>
1422     * @see CaptureRequest#CONTROL_EFFECT_MODE
1423     */
1424    public static final int CONTROL_EFFECT_MODE_SEPIA = 4;
1425
1426    /**
1427     * <p>A "posterization" effect where the image uses
1428     * discrete regions of tone rather than a continuous
1429     * gradient of tones.</p>
1430     * @see CaptureRequest#CONTROL_EFFECT_MODE
1431     */
1432    public static final int CONTROL_EFFECT_MODE_POSTERIZE = 5;
1433
1434    /**
1435     * <p>A "whiteboard" effect where the image is typically displayed
1436     * as regions of white, with black or grey details.</p>
1437     * @see CaptureRequest#CONTROL_EFFECT_MODE
1438     */
1439    public static final int CONTROL_EFFECT_MODE_WHITEBOARD = 6;
1440
1441    /**
1442     * <p>A "blackboard" effect where the image is typically displayed
1443     * as regions of black, with white or grey details.</p>
1444     * @see CaptureRequest#CONTROL_EFFECT_MODE
1445     */
1446    public static final int CONTROL_EFFECT_MODE_BLACKBOARD = 7;
1447
1448    /**
1449     * <p>An "aqua" effect where a blue hue is added to the image.</p>
1450     * @see CaptureRequest#CONTROL_EFFECT_MODE
1451     */
1452    public static final int CONTROL_EFFECT_MODE_AQUA = 8;
1453
1454    //
1455    // Enumeration values for CaptureRequest#CONTROL_MODE
1456    //
1457
1458    /**
1459     * <p>Full application control of pipeline.</p>
1460     * <p>All control by the device's metering and focusing (3A)
1461     * routines is disabled, and no other settings in
1462     * android.control.* have any effect, except that
1463     * {@link CaptureRequest#CONTROL_CAPTURE_INTENT android.control.captureIntent} may be used by the camera
1464     * device to select post-processing values for processing
1465     * blocks that do not allow for manual control, or are not
1466     * exposed by the camera API.</p>
1467     * <p>However, the camera device's 3A routines may continue to
1468     * collect statistics and update their internal state so that
1469     * when control is switched to AUTO mode, good control values
1470     * can be immediately applied.</p>
1471     *
1472     * @see CaptureRequest#CONTROL_CAPTURE_INTENT
1473     * @see CaptureRequest#CONTROL_MODE
1474     */
1475    public static final int CONTROL_MODE_OFF = 0;
1476
1477    /**
1478     * <p>Use settings for each individual 3A routine.</p>
1479     * <p>Manual control of capture parameters is disabled. All
1480     * controls in android.control.* besides sceneMode take
1481     * effect.</p>
1482     * @see CaptureRequest#CONTROL_MODE
1483     */
1484    public static final int CONTROL_MODE_AUTO = 1;
1485
1486    /**
1487     * <p>Use a specific scene mode.</p>
1488     * <p>Enabling this disables control.aeMode, control.awbMode and
1489     * control.afMode controls; the camera device will ignore
1490     * those settings while USE_SCENE_MODE is active (except for
1491     * FACE_PRIORITY scene mode). Other control entries are still
1492     * active.  This setting can only be used if scene mode is
1493     * supported (i.e. {@link CameraCharacteristics#CONTROL_AVAILABLE_SCENE_MODES android.control.availableSceneModes}
1494     * contain some modes other than DISABLED).</p>
1495     *
1496     * @see CameraCharacteristics#CONTROL_AVAILABLE_SCENE_MODES
1497     * @see CaptureRequest#CONTROL_MODE
1498     */
1499    public static final int CONTROL_MODE_USE_SCENE_MODE = 2;
1500
1501    /**
1502     * <p>Same as OFF mode, except that this capture will not be
1503     * used by camera device background auto-exposure, auto-white balance and
1504     * auto-focus algorithms (3A) to update their statistics.</p>
1505     * <p>Specifically, the 3A routines are locked to the last
1506     * values set from a request with AUTO, OFF, or
1507     * USE_SCENE_MODE, and any statistics or state updates
1508     * collected from manual captures with OFF_KEEP_STATE will be
1509     * discarded by the camera device.</p>
1510     * @see CaptureRequest#CONTROL_MODE
1511     */
1512    public static final int CONTROL_MODE_OFF_KEEP_STATE = 3;
1513
1514    //
1515    // Enumeration values for CaptureRequest#CONTROL_SCENE_MODE
1516    //
1517
1518    /**
1519     * <p>Indicates that no scene modes are set for a given capture request.</p>
1520     * @see CaptureRequest#CONTROL_SCENE_MODE
1521     */
1522    public static final int CONTROL_SCENE_MODE_DISABLED = 0;
1523
1524    /**
1525     * <p>If face detection support exists, use face
1526     * detection data for auto-focus, auto-white balance, and
1527     * auto-exposure routines.</p>
1528     * <p>If face detection statistics are disabled
1529     * (i.e. {@link CaptureRequest#STATISTICS_FACE_DETECT_MODE android.statistics.faceDetectMode} is set to OFF),
1530     * this should still operate correctly (but will not return
1531     * face detection statistics to the framework).</p>
1532     * <p>Unlike the other scene modes, {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode},
1533     * {@link CaptureRequest#CONTROL_AWB_MODE android.control.awbMode}, and {@link CaptureRequest#CONTROL_AF_MODE android.control.afMode}
1534     * remain active when FACE_PRIORITY is set.</p>
1535     *
1536     * @see CaptureRequest#CONTROL_AE_MODE
1537     * @see CaptureRequest#CONTROL_AF_MODE
1538     * @see CaptureRequest#CONTROL_AWB_MODE
1539     * @see CaptureRequest#STATISTICS_FACE_DETECT_MODE
1540     * @see CaptureRequest#CONTROL_SCENE_MODE
1541     */
1542    public static final int CONTROL_SCENE_MODE_FACE_PRIORITY = 1;
1543
1544    /**
1545     * <p>Optimized for photos of quickly moving objects.</p>
1546     * <p>Similar to SPORTS.</p>
1547     * @see CaptureRequest#CONTROL_SCENE_MODE
1548     */
1549    public static final int CONTROL_SCENE_MODE_ACTION = 2;
1550
1551    /**
1552     * <p>Optimized for still photos of people.</p>
1553     * @see CaptureRequest#CONTROL_SCENE_MODE
1554     */
1555    public static final int CONTROL_SCENE_MODE_PORTRAIT = 3;
1556
1557    /**
1558     * <p>Optimized for photos of distant macroscopic objects.</p>
1559     * @see CaptureRequest#CONTROL_SCENE_MODE
1560     */
1561    public static final int CONTROL_SCENE_MODE_LANDSCAPE = 4;
1562
1563    /**
1564     * <p>Optimized for low-light settings.</p>
1565     * @see CaptureRequest#CONTROL_SCENE_MODE
1566     */
1567    public static final int CONTROL_SCENE_MODE_NIGHT = 5;
1568
1569    /**
1570     * <p>Optimized for still photos of people in low-light
1571     * settings.</p>
1572     * @see CaptureRequest#CONTROL_SCENE_MODE
1573     */
1574    public static final int CONTROL_SCENE_MODE_NIGHT_PORTRAIT = 6;
1575
1576    /**
1577     * <p>Optimized for dim, indoor settings where flash must
1578     * remain off.</p>
1579     * @see CaptureRequest#CONTROL_SCENE_MODE
1580     */
1581    public static final int CONTROL_SCENE_MODE_THEATRE = 7;
1582
1583    /**
1584     * <p>Optimized for bright, outdoor beach settings.</p>
1585     * @see CaptureRequest#CONTROL_SCENE_MODE
1586     */
1587    public static final int CONTROL_SCENE_MODE_BEACH = 8;
1588
1589    /**
1590     * <p>Optimized for bright, outdoor settings containing snow.</p>
1591     * @see CaptureRequest#CONTROL_SCENE_MODE
1592     */
1593    public static final int CONTROL_SCENE_MODE_SNOW = 9;
1594
1595    /**
1596     * <p>Optimized for scenes of the setting sun.</p>
1597     * @see CaptureRequest#CONTROL_SCENE_MODE
1598     */
1599    public static final int CONTROL_SCENE_MODE_SUNSET = 10;
1600
1601    /**
1602     * <p>Optimized to avoid blurry photos due to small amounts of
1603     * device motion (for example: due to hand shake).</p>
1604     * @see CaptureRequest#CONTROL_SCENE_MODE
1605     */
1606    public static final int CONTROL_SCENE_MODE_STEADYPHOTO = 11;
1607
1608    /**
1609     * <p>Optimized for nighttime photos of fireworks.</p>
1610     * @see CaptureRequest#CONTROL_SCENE_MODE
1611     */
1612    public static final int CONTROL_SCENE_MODE_FIREWORKS = 12;
1613
1614    /**
1615     * <p>Optimized for photos of quickly moving people.</p>
1616     * <p>Similar to ACTION.</p>
1617     * @see CaptureRequest#CONTROL_SCENE_MODE
1618     */
1619    public static final int CONTROL_SCENE_MODE_SPORTS = 13;
1620
1621    /**
1622     * <p>Optimized for dim, indoor settings with multiple moving
1623     * people.</p>
1624     * @see CaptureRequest#CONTROL_SCENE_MODE
1625     */
1626    public static final int CONTROL_SCENE_MODE_PARTY = 14;
1627
1628    /**
1629     * <p>Optimized for dim settings where the main light source
1630     * is a flame.</p>
1631     * @see CaptureRequest#CONTROL_SCENE_MODE
1632     */
1633    public static final int CONTROL_SCENE_MODE_CANDLELIGHT = 15;
1634
1635    /**
1636     * <p>Optimized for accurately capturing a photo of barcode
1637     * for use by camera applications that wish to read the
1638     * barcode value.</p>
1639     * @see CaptureRequest#CONTROL_SCENE_MODE
1640     */
1641    public static final int CONTROL_SCENE_MODE_BARCODE = 16;
1642
1643    /**
1644     * <p>Optimized for high speed video recording (frame rate &gt;=60fps) use case.</p>
1645     * <p>The supported high speed video sizes and fps ranges are specified in
1646     * android.control.availableHighSpeedVideoConfigurations. To get desired
1647     * output frame rates, the application is only allowed to select video size
1648     * and fps range combinations listed in this static metadata. The fps range
1649     * can be control via {@link CaptureRequest#CONTROL_AE_TARGET_FPS_RANGE android.control.aeTargetFpsRange}.</p>
1650     * <p>In this mode, the camera device will override aeMode, awbMode, and afMode to
1651     * ON, ON, and CONTINUOUS_VIDEO, respectively. All post-processing block mode
1652     * controls will be overridden to be FAST. Therefore, no manual control of capture
1653     * and post-processing parameters is possible. All other controls operate the
1654     * same as when {@link CaptureRequest#CONTROL_MODE android.control.mode} == AUTO. This means that all other
1655     * android.control.* fields continue to work, such as</p>
1656     * <ul>
1657     * <li>{@link CaptureRequest#CONTROL_AE_TARGET_FPS_RANGE android.control.aeTargetFpsRange}</li>
1658     * <li>{@link CaptureRequest#CONTROL_AE_EXPOSURE_COMPENSATION android.control.aeExposureCompensation}</li>
1659     * <li>{@link CaptureRequest#CONTROL_AE_LOCK android.control.aeLock}</li>
1660     * <li>{@link CaptureRequest#CONTROL_AWB_LOCK android.control.awbLock}</li>
1661     * <li>{@link CaptureRequest#CONTROL_EFFECT_MODE android.control.effectMode}</li>
1662     * <li>{@link CaptureRequest#CONTROL_AE_REGIONS android.control.aeRegions}</li>
1663     * <li>{@link CaptureRequest#CONTROL_AF_REGIONS android.control.afRegions}</li>
1664     * <li>{@link CaptureRequest#CONTROL_AWB_REGIONS android.control.awbRegions}</li>
1665     * <li>{@link CaptureRequest#CONTROL_AF_TRIGGER android.control.afTrigger}</li>
1666     * <li>{@link CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER android.control.aePrecaptureTrigger}</li>
1667     * </ul>
1668     * <p>Outside of android.control.*, the following controls will work:</p>
1669     * <ul>
1670     * <li>{@link CaptureRequest#FLASH_MODE android.flash.mode} (automatic flash for still capture will not work since aeMode is ON)</li>
1671     * <li>{@link CaptureRequest#LENS_OPTICAL_STABILIZATION_MODE android.lens.opticalStabilizationMode} (if it is supported)</li>
1672     * <li>{@link CaptureRequest#SCALER_CROP_REGION android.scaler.cropRegion}</li>
1673     * <li>{@link CaptureRequest#STATISTICS_FACE_DETECT_MODE android.statistics.faceDetectMode}</li>
1674     * </ul>
1675     * <p>For high speed recording use case, the actual maximum supported frame rate may
1676     * be lower than what camera can output, depending on the destination Surfaces for
1677     * the image data. For example, if the destination surface is from video encoder,
1678     * the application need check if the video encoder is capable of supporting the
1679     * high frame rate for a given video size, or it will end up with lower recording
1680     * frame rate. If the destination surface is from preview window, the preview frame
1681     * rate will be bounded by the screen refresh rate.</p>
1682     * <p>The camera device will only support up to 2 output high speed streams
1683     * (processed non-stalling format defined in android.request.maxNumOutputStreams)
1684     * in this mode. This control will be effective only if all of below conditions are true:</p>
1685     * <ul>
1686     * <li>The application created no more than maxNumHighSpeedStreams processed non-stalling
1687     * format output streams, where maxNumHighSpeedStreams is calculated as
1688     * min(2, android.request.maxNumOutputStreams[Processed (but not-stalling)]).</li>
1689     * <li>The stream sizes are selected from the sizes reported by
1690     * android.control.availableHighSpeedVideoConfigurations.</li>
1691     * <li>No processed non-stalling or raw streams are configured.</li>
1692     * </ul>
1693     * <p>When above conditions are NOT satistied, the controls of this mode and
1694     * {@link CaptureRequest#CONTROL_AE_TARGET_FPS_RANGE android.control.aeTargetFpsRange} will be ignored by the camera device,
1695     * the camera device will fall back to {@link CaptureRequest#CONTROL_MODE android.control.mode} <code>==</code> AUTO,
1696     * and the returned capture result metadata will give the fps range choosen
1697     * by the camera device.</p>
1698     * <p>Switching into or out of this mode may trigger some camera ISP/sensor
1699     * reconfigurations, which may introduce extra latency. It is recommended that
1700     * the application avoids unnecessary scene mode switch as much as possible.</p>
1701     *
1702     * @see CaptureRequest#CONTROL_AE_EXPOSURE_COMPENSATION
1703     * @see CaptureRequest#CONTROL_AE_LOCK
1704     * @see CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
1705     * @see CaptureRequest#CONTROL_AE_REGIONS
1706     * @see CaptureRequest#CONTROL_AE_TARGET_FPS_RANGE
1707     * @see CaptureRequest#CONTROL_AF_REGIONS
1708     * @see CaptureRequest#CONTROL_AF_TRIGGER
1709     * @see CaptureRequest#CONTROL_AWB_LOCK
1710     * @see CaptureRequest#CONTROL_AWB_REGIONS
1711     * @see CaptureRequest#CONTROL_EFFECT_MODE
1712     * @see CaptureRequest#CONTROL_MODE
1713     * @see CaptureRequest#FLASH_MODE
1714     * @see CaptureRequest#LENS_OPTICAL_STABILIZATION_MODE
1715     * @see CaptureRequest#SCALER_CROP_REGION
1716     * @see CaptureRequest#STATISTICS_FACE_DETECT_MODE
1717     * @see CaptureRequest#CONTROL_SCENE_MODE
1718     */
1719    public static final int CONTROL_SCENE_MODE_HIGH_SPEED_VIDEO = 17;
1720
1721    /**
1722     * <p>Turn on a device-specific high dynamic range (HDR) mode.</p>
1723     * <p>In this scene mode, the camera device captures images
1724     * that keep a larger range of scene illumination levels
1725     * visible in the final image. For example, when taking a
1726     * picture of a object in front of a bright window, both
1727     * the object and the scene through the window may be
1728     * visible when using HDR mode, while in normal AUTO mode,
1729     * one or the other may be poorly exposed. As a tradeoff,
1730     * HDR mode generally takes much longer to capture a single
1731     * image, has no user control, and may have other artifacts
1732     * depending on the HDR method used.</p>
1733     * <p>Therefore, HDR captures operate at a much slower rate
1734     * than regular captures.</p>
1735     * <p>In this mode, on LIMITED or FULL devices, when a request
1736     * is made with a {@link CaptureRequest#CONTROL_CAPTURE_INTENT android.control.captureIntent} of
1737     * STILL_CAPTURE, the camera device will capture an image
1738     * using a high dynamic range capture technique.  On LEGACY
1739     * devices, captures that target a JPEG-format output will
1740     * be captured with HDR, and the capture intent is not
1741     * relevant.</p>
1742     * <p>The HDR capture may involve the device capturing a burst
1743     * of images internally and combining them into one, or it
1744     * may involve the device using specialized high dynamic
1745     * range capture hardware. In all cases, a single image is
1746     * produced in response to a capture request submitted
1747     * while in HDR mode.</p>
1748     * <p>Since substantial post-processing is generally needed to
1749     * produce an HDR image, only YUV and JPEG outputs are
1750     * supported for LIMITED/FULL device HDR captures, and only
1751     * JPEG outputs are supported for LEGACY HDR
1752     * captures. Using a RAW output for HDR capture is not
1753     * supported.</p>
1754     *
1755     * @see CaptureRequest#CONTROL_CAPTURE_INTENT
1756     * @see CaptureRequest#CONTROL_SCENE_MODE
1757     */
1758    public static final int CONTROL_SCENE_MODE_HDR = 18;
1759
1760    //
1761    // Enumeration values for CaptureRequest#CONTROL_VIDEO_STABILIZATION_MODE
1762    //
1763
1764    /**
1765     * <p>Video stabilization is disabled.</p>
1766     * @see CaptureRequest#CONTROL_VIDEO_STABILIZATION_MODE
1767     */
1768    public static final int CONTROL_VIDEO_STABILIZATION_MODE_OFF = 0;
1769
1770    /**
1771     * <p>Video stabilization is enabled.</p>
1772     * @see CaptureRequest#CONTROL_VIDEO_STABILIZATION_MODE
1773     */
1774    public static final int CONTROL_VIDEO_STABILIZATION_MODE_ON = 1;
1775
1776    //
1777    // Enumeration values for CaptureRequest#EDGE_MODE
1778    //
1779
1780    /**
1781     * <p>No edge enhancement is applied.</p>
1782     * @see CaptureRequest#EDGE_MODE
1783     */
1784    public static final int EDGE_MODE_OFF = 0;
1785
1786    /**
1787     * <p>Apply edge enhancement at a quality level that does not slow down frame rate relative to sensor
1788     * output</p>
1789     * @see CaptureRequest#EDGE_MODE
1790     */
1791    public static final int EDGE_MODE_FAST = 1;
1792
1793    /**
1794     * <p>Apply high-quality edge enhancement, at a cost of reducing output frame rate.</p>
1795     * @see CaptureRequest#EDGE_MODE
1796     */
1797    public static final int EDGE_MODE_HIGH_QUALITY = 2;
1798
1799    //
1800    // Enumeration values for CaptureRequest#FLASH_MODE
1801    //
1802
1803    /**
1804     * <p>Do not fire the flash for this capture.</p>
1805     * @see CaptureRequest#FLASH_MODE
1806     */
1807    public static final int FLASH_MODE_OFF = 0;
1808
1809    /**
1810     * <p>If the flash is available and charged, fire flash
1811     * for this capture.</p>
1812     * @see CaptureRequest#FLASH_MODE
1813     */
1814    public static final int FLASH_MODE_SINGLE = 1;
1815
1816    /**
1817     * <p>Transition flash to continuously on.</p>
1818     * @see CaptureRequest#FLASH_MODE
1819     */
1820    public static final int FLASH_MODE_TORCH = 2;
1821
1822    //
1823    // Enumeration values for CaptureRequest#HOT_PIXEL_MODE
1824    //
1825
1826    /**
1827     * <p>No hot pixel correction is applied.</p>
1828     * <p>The frame rate must not be reduced relative to sensor raw output
1829     * for this option.</p>
1830     * <p>The hotpixel map may be returned in {@link CaptureResult#STATISTICS_HOT_PIXEL_MAP android.statistics.hotPixelMap}.</p>
1831     *
1832     * @see CaptureResult#STATISTICS_HOT_PIXEL_MAP
1833     * @see CaptureRequest#HOT_PIXEL_MODE
1834     */
1835    public static final int HOT_PIXEL_MODE_OFF = 0;
1836
1837    /**
1838     * <p>Hot pixel correction is applied, without reducing frame
1839     * rate relative to sensor raw output.</p>
1840     * <p>The hotpixel map may be returned in {@link CaptureResult#STATISTICS_HOT_PIXEL_MAP android.statistics.hotPixelMap}.</p>
1841     *
1842     * @see CaptureResult#STATISTICS_HOT_PIXEL_MAP
1843     * @see CaptureRequest#HOT_PIXEL_MODE
1844     */
1845    public static final int HOT_PIXEL_MODE_FAST = 1;
1846
1847    /**
1848     * <p>High-quality hot pixel correction is applied, at a cost
1849     * of reducing frame rate relative to sensor raw output.</p>
1850     * <p>The hotpixel map may be returned in {@link CaptureResult#STATISTICS_HOT_PIXEL_MAP android.statistics.hotPixelMap}.</p>
1851     *
1852     * @see CaptureResult#STATISTICS_HOT_PIXEL_MAP
1853     * @see CaptureRequest#HOT_PIXEL_MODE
1854     */
1855    public static final int HOT_PIXEL_MODE_HIGH_QUALITY = 2;
1856
1857    //
1858    // Enumeration values for CaptureRequest#LENS_OPTICAL_STABILIZATION_MODE
1859    //
1860
1861    /**
1862     * <p>Optical stabilization is unavailable.</p>
1863     * @see CaptureRequest#LENS_OPTICAL_STABILIZATION_MODE
1864     */
1865    public static final int LENS_OPTICAL_STABILIZATION_MODE_OFF = 0;
1866
1867    /**
1868     * <p>Optical stabilization is enabled.</p>
1869     * @see CaptureRequest#LENS_OPTICAL_STABILIZATION_MODE
1870     */
1871    public static final int LENS_OPTICAL_STABILIZATION_MODE_ON = 1;
1872
1873    //
1874    // Enumeration values for CaptureRequest#NOISE_REDUCTION_MODE
1875    //
1876
1877    /**
1878     * <p>No noise reduction is applied.</p>
1879     * @see CaptureRequest#NOISE_REDUCTION_MODE
1880     */
1881    public static final int NOISE_REDUCTION_MODE_OFF = 0;
1882
1883    /**
1884     * <p>Noise reduction is applied without reducing frame rate relative to sensor
1885     * output.</p>
1886     * @see CaptureRequest#NOISE_REDUCTION_MODE
1887     */
1888    public static final int NOISE_REDUCTION_MODE_FAST = 1;
1889
1890    /**
1891     * <p>High-quality noise reduction is applied, at the cost of reducing frame rate
1892     * relative to sensor output.</p>
1893     * @see CaptureRequest#NOISE_REDUCTION_MODE
1894     */
1895    public static final int NOISE_REDUCTION_MODE_HIGH_QUALITY = 2;
1896
1897    /**
1898     * <p>MINIMAL noise reduction is applied without reducing frame rate relative to
1899     * sensor output. </p>
1900     * @see CaptureRequest#NOISE_REDUCTION_MODE
1901     */
1902    public static final int NOISE_REDUCTION_MODE_MINIMAL = 3;
1903
1904    //
1905    // Enumeration values for CaptureRequest#SENSOR_TEST_PATTERN_MODE
1906    //
1907
1908    /**
1909     * <p>No test pattern mode is used, and the camera
1910     * device returns captures from the image sensor.</p>
1911     * <p>This is the default if the key is not set.</p>
1912     * @see CaptureRequest#SENSOR_TEST_PATTERN_MODE
1913     */
1914    public static final int SENSOR_TEST_PATTERN_MODE_OFF = 0;
1915
1916    /**
1917     * <p>Each pixel in <code>[R, G_even, G_odd, B]</code> is replaced by its
1918     * respective color channel provided in
1919     * {@link CaptureRequest#SENSOR_TEST_PATTERN_DATA android.sensor.testPatternData}.</p>
1920     * <p>For example:</p>
1921     * <pre><code>android.testPatternData = [0, 0xFFFFFFFF, 0xFFFFFFFF, 0]
1922     * </code></pre>
1923     * <p>All green pixels are 100% green. All red/blue pixels are black.</p>
1924     * <pre><code>android.testPatternData = [0xFFFFFFFF, 0, 0xFFFFFFFF, 0]
1925     * </code></pre>
1926     * <p>All red pixels are 100% red. Only the odd green pixels
1927     * are 100% green. All blue pixels are 100% black.</p>
1928     *
1929     * @see CaptureRequest#SENSOR_TEST_PATTERN_DATA
1930     * @see CaptureRequest#SENSOR_TEST_PATTERN_MODE
1931     */
1932    public static final int SENSOR_TEST_PATTERN_MODE_SOLID_COLOR = 1;
1933
1934    /**
1935     * <p>All pixel data is replaced with an 8-bar color pattern.</p>
1936     * <p>The vertical bars (left-to-right) are as follows:</p>
1937     * <ul>
1938     * <li>100% white</li>
1939     * <li>yellow</li>
1940     * <li>cyan</li>
1941     * <li>green</li>
1942     * <li>magenta</li>
1943     * <li>red</li>
1944     * <li>blue</li>
1945     * <li>black</li>
1946     * </ul>
1947     * <p>In general the image would look like the following:</p>
1948     * <pre><code>W Y C G M R B K
1949     * W Y C G M R B K
1950     * W Y C G M R B K
1951     * W Y C G M R B K
1952     * W Y C G M R B K
1953     * . . . . . . . .
1954     * . . . . . . . .
1955     * . . . . . . . .
1956     *
1957     * (B = Blue, K = Black)
1958     * </code></pre>
1959     * <p>Each bar should take up 1/8 of the sensor pixel array width.
1960     * When this is not possible, the bar size should be rounded
1961     * down to the nearest integer and the pattern can repeat
1962     * on the right side.</p>
1963     * <p>Each bar's height must always take up the full sensor
1964     * pixel array height.</p>
1965     * <p>Each pixel in this test pattern must be set to either
1966     * 0% intensity or 100% intensity.</p>
1967     * @see CaptureRequest#SENSOR_TEST_PATTERN_MODE
1968     */
1969    public static final int SENSOR_TEST_PATTERN_MODE_COLOR_BARS = 2;
1970
1971    /**
1972     * <p>The test pattern is similar to COLOR_BARS, except that
1973     * each bar should start at its specified color at the top,
1974     * and fade to gray at the bottom.</p>
1975     * <p>Furthermore each bar is further subdivided into a left and
1976     * right half. The left half should have a smooth gradient,
1977     * and the right half should have a quantized gradient.</p>
1978     * <p>In particular, the right half's should consist of blocks of the
1979     * same color for 1/16th active sensor pixel array width.</p>
1980     * <p>The least significant bits in the quantized gradient should
1981     * be copied from the most significant bits of the smooth gradient.</p>
1982     * <p>The height of each bar should always be a multiple of 128.
1983     * When this is not the case, the pattern should repeat at the bottom
1984     * of the image.</p>
1985     * @see CaptureRequest#SENSOR_TEST_PATTERN_MODE
1986     */
1987    public static final int SENSOR_TEST_PATTERN_MODE_COLOR_BARS_FADE_TO_GRAY = 3;
1988
1989    /**
1990     * <p>All pixel data is replaced by a pseudo-random sequence
1991     * generated from a PN9 512-bit sequence (typically implemented
1992     * in hardware with a linear feedback shift register).</p>
1993     * <p>The generator should be reset at the beginning of each frame,
1994     * and thus each subsequent raw frame with this test pattern should
1995     * be exactly the same as the last.</p>
1996     * @see CaptureRequest#SENSOR_TEST_PATTERN_MODE
1997     */
1998    public static final int SENSOR_TEST_PATTERN_MODE_PN9 = 4;
1999
2000    /**
2001     * <p>The first custom test pattern. All custom patterns that are
2002     * available only on this camera device are at least this numeric
2003     * value.</p>
2004     * <p>All of the custom test patterns will be static
2005     * (that is the raw image must not vary from frame to frame).</p>
2006     * @see CaptureRequest#SENSOR_TEST_PATTERN_MODE
2007     */
2008    public static final int SENSOR_TEST_PATTERN_MODE_CUSTOM1 = 256;
2009
2010    //
2011    // Enumeration values for CaptureRequest#SHADING_MODE
2012    //
2013
2014    /**
2015     * <p>No lens shading correction is applied.</p>
2016     * @see CaptureRequest#SHADING_MODE
2017     */
2018    public static final int SHADING_MODE_OFF = 0;
2019
2020    /**
2021     * <p>Apply lens shading corrections, without slowing
2022     * frame rate relative to sensor raw output</p>
2023     * @see CaptureRequest#SHADING_MODE
2024     */
2025    public static final int SHADING_MODE_FAST = 1;
2026
2027    /**
2028     * <p>Apply high-quality lens shading correction, at the
2029     * cost of reduced frame rate.</p>
2030     * @see CaptureRequest#SHADING_MODE
2031     */
2032    public static final int SHADING_MODE_HIGH_QUALITY = 2;
2033
2034    //
2035    // Enumeration values for CaptureRequest#STATISTICS_FACE_DETECT_MODE
2036    //
2037
2038    /**
2039     * <p>Do not include face detection statistics in capture
2040     * results.</p>
2041     * @see CaptureRequest#STATISTICS_FACE_DETECT_MODE
2042     */
2043    public static final int STATISTICS_FACE_DETECT_MODE_OFF = 0;
2044
2045    /**
2046     * <p>Return face rectangle and confidence values only.</p>
2047     * @see CaptureRequest#STATISTICS_FACE_DETECT_MODE
2048     */
2049    public static final int STATISTICS_FACE_DETECT_MODE_SIMPLE = 1;
2050
2051    /**
2052     * <p>Return all face
2053     * metadata.</p>
2054     * <p>In this mode, face rectangles, scores, landmarks, and face IDs are all valid.</p>
2055     * @see CaptureRequest#STATISTICS_FACE_DETECT_MODE
2056     */
2057    public static final int STATISTICS_FACE_DETECT_MODE_FULL = 2;
2058
2059    //
2060    // Enumeration values for CaptureRequest#STATISTICS_LENS_SHADING_MAP_MODE
2061    //
2062
2063    /**
2064     * <p>Do not include a lens shading map in the capture result.</p>
2065     * @see CaptureRequest#STATISTICS_LENS_SHADING_MAP_MODE
2066     */
2067    public static final int STATISTICS_LENS_SHADING_MAP_MODE_OFF = 0;
2068
2069    /**
2070     * <p>Include a lens shading map in the capture result.</p>
2071     * @see CaptureRequest#STATISTICS_LENS_SHADING_MAP_MODE
2072     */
2073    public static final int STATISTICS_LENS_SHADING_MAP_MODE_ON = 1;
2074
2075    //
2076    // Enumeration values for CaptureRequest#TONEMAP_MODE
2077    //
2078
2079    /**
2080     * <p>Use the tone mapping curve specified in
2081     * the {@link CaptureRequest#TONEMAP_CURVE android.tonemap.curve}* entries.</p>
2082     * <p>All color enhancement and tonemapping must be disabled, except
2083     * for applying the tonemapping curve specified by
2084     * {@link CaptureRequest#TONEMAP_CURVE android.tonemap.curve}.</p>
2085     * <p>Must not slow down frame rate relative to raw
2086     * sensor output.</p>
2087     *
2088     * @see CaptureRequest#TONEMAP_CURVE
2089     * @see CaptureRequest#TONEMAP_MODE
2090     */
2091    public static final int TONEMAP_MODE_CONTRAST_CURVE = 0;
2092
2093    /**
2094     * <p>Advanced gamma mapping and color enhancement may be applied, without
2095     * reducing frame rate compared to raw sensor output.</p>
2096     * @see CaptureRequest#TONEMAP_MODE
2097     */
2098    public static final int TONEMAP_MODE_FAST = 1;
2099
2100    /**
2101     * <p>High-quality gamma mapping and color enhancement will be applied, at
2102     * the cost of reduced frame rate compared to raw sensor output.</p>
2103     * @see CaptureRequest#TONEMAP_MODE
2104     */
2105    public static final int TONEMAP_MODE_HIGH_QUALITY = 2;
2106
2107    /**
2108     * <p>Use the gamma value specified in {@link CaptureRequest#TONEMAP_GAMMA android.tonemap.gamma} to peform
2109     * tonemapping.</p>
2110     * <p>All color enhancement and tonemapping must be disabled, except
2111     * for applying the tonemapping curve specified by {@link CaptureRequest#TONEMAP_GAMMA android.tonemap.gamma}.</p>
2112     * <p>Must not slow down frame rate relative to raw sensor output.</p>
2113     *
2114     * @see CaptureRequest#TONEMAP_GAMMA
2115     * @see CaptureRequest#TONEMAP_MODE
2116     */
2117    public static final int TONEMAP_MODE_GAMMA_VALUE = 3;
2118
2119    /**
2120     * <p>Use the preset tonemapping curve specified in
2121     * {@link CaptureRequest#TONEMAP_PRESET_CURVE android.tonemap.presetCurve} to peform tonemapping.</p>
2122     * <p>All color enhancement and tonemapping must be disabled, except
2123     * for applying the tonemapping curve specified by
2124     * {@link CaptureRequest#TONEMAP_PRESET_CURVE android.tonemap.presetCurve}.</p>
2125     * <p>Must not slow down frame rate relative to raw sensor output.</p>
2126     *
2127     * @see CaptureRequest#TONEMAP_PRESET_CURVE
2128     * @see CaptureRequest#TONEMAP_MODE
2129     */
2130    public static final int TONEMAP_MODE_PRESET_CURVE = 4;
2131
2132    //
2133    // Enumeration values for CaptureRequest#TONEMAP_PRESET_CURVE
2134    //
2135
2136    /**
2137     * <p>Tonemapping curve is defined by sRGB</p>
2138     * @see CaptureRequest#TONEMAP_PRESET_CURVE
2139     */
2140    public static final int TONEMAP_PRESET_CURVE_SRGB = 0;
2141
2142    /**
2143     * <p>Tonemapping curve is defined by ITU-R BT.709</p>
2144     * @see CaptureRequest#TONEMAP_PRESET_CURVE
2145     */
2146    public static final int TONEMAP_PRESET_CURVE_REC709 = 1;
2147
2148    //
2149    // Enumeration values for CaptureResult#CONTROL_AE_STATE
2150    //
2151
2152    /**
2153     * <p>AE is off or recently reset.</p>
2154     * <p>When a camera device is opened, it starts in
2155     * this state. This is a transient state, the camera device may skip reporting
2156     * this state in capture result.</p>
2157     * @see CaptureResult#CONTROL_AE_STATE
2158     */
2159    public static final int CONTROL_AE_STATE_INACTIVE = 0;
2160
2161    /**
2162     * <p>AE doesn't yet have a good set of control values
2163     * for the current scene.</p>
2164     * <p>This is a transient state, the camera device may skip
2165     * reporting this state in capture result.</p>
2166     * @see CaptureResult#CONTROL_AE_STATE
2167     */
2168    public static final int CONTROL_AE_STATE_SEARCHING = 1;
2169
2170    /**
2171     * <p>AE has a good set of control values for the
2172     * current scene.</p>
2173     * @see CaptureResult#CONTROL_AE_STATE
2174     */
2175    public static final int CONTROL_AE_STATE_CONVERGED = 2;
2176
2177    /**
2178     * <p>AE has been locked.</p>
2179     * @see CaptureResult#CONTROL_AE_STATE
2180     */
2181    public static final int CONTROL_AE_STATE_LOCKED = 3;
2182
2183    /**
2184     * <p>AE has a good set of control values, but flash
2185     * needs to be fired for good quality still
2186     * capture.</p>
2187     * @see CaptureResult#CONTROL_AE_STATE
2188     */
2189    public static final int CONTROL_AE_STATE_FLASH_REQUIRED = 4;
2190
2191    /**
2192     * <p>AE has been asked to do a precapture sequence
2193     * and is currently executing it.</p>
2194     * <p>Precapture can be triggered through setting
2195     * {@link CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER android.control.aePrecaptureTrigger} to START.</p>
2196     * <p>Once PRECAPTURE completes, AE will transition to CONVERGED
2197     * or FLASH_REQUIRED as appropriate. This is a transient
2198     * state, the camera device may skip reporting this state in
2199     * capture result.</p>
2200     *
2201     * @see CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
2202     * @see CaptureResult#CONTROL_AE_STATE
2203     */
2204    public static final int CONTROL_AE_STATE_PRECAPTURE = 5;
2205
2206    //
2207    // Enumeration values for CaptureResult#CONTROL_AF_STATE
2208    //
2209
2210    /**
2211     * <p>AF is off or has not yet tried to scan/been asked
2212     * to scan.</p>
2213     * <p>When a camera device is opened, it starts in this
2214     * state. This is a transient state, the camera device may
2215     * skip reporting this state in capture
2216     * result.</p>
2217     * @see CaptureResult#CONTROL_AF_STATE
2218     */
2219    public static final int CONTROL_AF_STATE_INACTIVE = 0;
2220
2221    /**
2222     * <p>AF is currently performing an AF scan initiated the
2223     * camera device in a continuous autofocus mode.</p>
2224     * <p>Only used by CONTINUOUS_* AF modes. This is a transient
2225     * state, the camera device may skip reporting this state in
2226     * capture result.</p>
2227     * @see CaptureResult#CONTROL_AF_STATE
2228     */
2229    public static final int CONTROL_AF_STATE_PASSIVE_SCAN = 1;
2230
2231    /**
2232     * <p>AF currently believes it is in focus, but may
2233     * restart scanning at any time.</p>
2234     * <p>Only used by CONTINUOUS_* AF modes. This is a transient
2235     * state, the camera device may skip reporting this state in
2236     * capture result.</p>
2237     * @see CaptureResult#CONTROL_AF_STATE
2238     */
2239    public static final int CONTROL_AF_STATE_PASSIVE_FOCUSED = 2;
2240
2241    /**
2242     * <p>AF is performing an AF scan because it was
2243     * triggered by AF trigger.</p>
2244     * <p>Only used by AUTO or MACRO AF modes. This is a transient
2245     * state, the camera device may skip reporting this state in
2246     * capture result.</p>
2247     * @see CaptureResult#CONTROL_AF_STATE
2248     */
2249    public static final int CONTROL_AF_STATE_ACTIVE_SCAN = 3;
2250
2251    /**
2252     * <p>AF believes it is focused correctly and has locked
2253     * focus.</p>
2254     * <p>This state is reached only after an explicit START AF trigger has been
2255     * sent ({@link CaptureRequest#CONTROL_AF_TRIGGER android.control.afTrigger}), when good focus has been obtained.</p>
2256     * <p>The lens will remain stationary until the AF mode ({@link CaptureRequest#CONTROL_AF_MODE android.control.afMode}) is changed or
2257     * a new AF trigger is sent to the camera device ({@link CaptureRequest#CONTROL_AF_TRIGGER android.control.afTrigger}).</p>
2258     *
2259     * @see CaptureRequest#CONTROL_AF_MODE
2260     * @see CaptureRequest#CONTROL_AF_TRIGGER
2261     * @see CaptureResult#CONTROL_AF_STATE
2262     */
2263    public static final int CONTROL_AF_STATE_FOCUSED_LOCKED = 4;
2264
2265    /**
2266     * <p>AF has failed to focus successfully and has locked
2267     * focus.</p>
2268     * <p>This state is reached only after an explicit START AF trigger has been
2269     * sent ({@link CaptureRequest#CONTROL_AF_TRIGGER android.control.afTrigger}), when good focus cannot be obtained.</p>
2270     * <p>The lens will remain stationary until the AF mode ({@link CaptureRequest#CONTROL_AF_MODE android.control.afMode}) is changed or
2271     * a new AF trigger is sent to the camera device ({@link CaptureRequest#CONTROL_AF_TRIGGER android.control.afTrigger}).</p>
2272     *
2273     * @see CaptureRequest#CONTROL_AF_MODE
2274     * @see CaptureRequest#CONTROL_AF_TRIGGER
2275     * @see CaptureResult#CONTROL_AF_STATE
2276     */
2277    public static final int CONTROL_AF_STATE_NOT_FOCUSED_LOCKED = 5;
2278
2279    /**
2280     * <p>AF finished a passive scan without finding focus,
2281     * and may restart scanning at any time.</p>
2282     * <p>Only used by CONTINUOUS_* AF modes. This is a transient state, the camera
2283     * device may skip reporting this state in capture result.</p>
2284     * <p>LEGACY camera devices do not support this state. When a passive
2285     * scan has finished, it will always go to PASSIVE_FOCUSED.</p>
2286     * @see CaptureResult#CONTROL_AF_STATE
2287     */
2288    public static final int CONTROL_AF_STATE_PASSIVE_UNFOCUSED = 6;
2289
2290    //
2291    // Enumeration values for CaptureResult#CONTROL_AWB_STATE
2292    //
2293
2294    /**
2295     * <p>AWB is not in auto mode, or has not yet started metering.</p>
2296     * <p>When a camera device is opened, it starts in this
2297     * state. This is a transient state, the camera device may
2298     * skip reporting this state in capture
2299     * result.</p>
2300     * @see CaptureResult#CONTROL_AWB_STATE
2301     */
2302    public static final int CONTROL_AWB_STATE_INACTIVE = 0;
2303
2304    /**
2305     * <p>AWB doesn't yet have a good set of control
2306     * values for the current scene.</p>
2307     * <p>This is a transient state, the camera device
2308     * may skip reporting this state in capture result.</p>
2309     * @see CaptureResult#CONTROL_AWB_STATE
2310     */
2311    public static final int CONTROL_AWB_STATE_SEARCHING = 1;
2312
2313    /**
2314     * <p>AWB has a good set of control values for the
2315     * current scene.</p>
2316     * @see CaptureResult#CONTROL_AWB_STATE
2317     */
2318    public static final int CONTROL_AWB_STATE_CONVERGED = 2;
2319
2320    /**
2321     * <p>AWB has been locked.</p>
2322     * @see CaptureResult#CONTROL_AWB_STATE
2323     */
2324    public static final int CONTROL_AWB_STATE_LOCKED = 3;
2325
2326    //
2327    // Enumeration values for CaptureResult#FLASH_STATE
2328    //
2329
2330    /**
2331     * <p>No flash on camera.</p>
2332     * @see CaptureResult#FLASH_STATE
2333     */
2334    public static final int FLASH_STATE_UNAVAILABLE = 0;
2335
2336    /**
2337     * <p>Flash is charging and cannot be fired.</p>
2338     * @see CaptureResult#FLASH_STATE
2339     */
2340    public static final int FLASH_STATE_CHARGING = 1;
2341
2342    /**
2343     * <p>Flash is ready to fire.</p>
2344     * @see CaptureResult#FLASH_STATE
2345     */
2346    public static final int FLASH_STATE_READY = 2;
2347
2348    /**
2349     * <p>Flash fired for this capture.</p>
2350     * @see CaptureResult#FLASH_STATE
2351     */
2352    public static final int FLASH_STATE_FIRED = 3;
2353
2354    /**
2355     * <p>Flash partially illuminated this frame.</p>
2356     * <p>This is usually due to the next or previous frame having
2357     * the flash fire, and the flash spilling into this capture
2358     * due to hardware limitations.</p>
2359     * @see CaptureResult#FLASH_STATE
2360     */
2361    public static final int FLASH_STATE_PARTIAL = 4;
2362
2363    //
2364    // Enumeration values for CaptureResult#LENS_STATE
2365    //
2366
2367    /**
2368     * <p>The lens parameters ({@link CaptureRequest#LENS_FOCAL_LENGTH android.lens.focalLength}, {@link CaptureRequest#LENS_FOCUS_DISTANCE android.lens.focusDistance},
2369     * {@link CaptureRequest#LENS_FILTER_DENSITY android.lens.filterDensity} and {@link CaptureRequest#LENS_APERTURE android.lens.aperture}) are not changing.</p>
2370     *
2371     * @see CaptureRequest#LENS_APERTURE
2372     * @see CaptureRequest#LENS_FILTER_DENSITY
2373     * @see CaptureRequest#LENS_FOCAL_LENGTH
2374     * @see CaptureRequest#LENS_FOCUS_DISTANCE
2375     * @see CaptureResult#LENS_STATE
2376     */
2377    public static final int LENS_STATE_STATIONARY = 0;
2378
2379    /**
2380     * <p>One or several of the lens parameters
2381     * ({@link CaptureRequest#LENS_FOCAL_LENGTH android.lens.focalLength}, {@link CaptureRequest#LENS_FOCUS_DISTANCE android.lens.focusDistance},
2382     * {@link CaptureRequest#LENS_FILTER_DENSITY android.lens.filterDensity} or {@link CaptureRequest#LENS_APERTURE android.lens.aperture}) is
2383     * currently changing.</p>
2384     *
2385     * @see CaptureRequest#LENS_APERTURE
2386     * @see CaptureRequest#LENS_FILTER_DENSITY
2387     * @see CaptureRequest#LENS_FOCAL_LENGTH
2388     * @see CaptureRequest#LENS_FOCUS_DISTANCE
2389     * @see CaptureResult#LENS_STATE
2390     */
2391    public static final int LENS_STATE_MOVING = 1;
2392
2393    //
2394    // Enumeration values for CaptureResult#STATISTICS_SCENE_FLICKER
2395    //
2396
2397    /**
2398     * <p>The camera device does not detect any flickering illumination
2399     * in the current scene.</p>
2400     * @see CaptureResult#STATISTICS_SCENE_FLICKER
2401     */
2402    public static final int STATISTICS_SCENE_FLICKER_NONE = 0;
2403
2404    /**
2405     * <p>The camera device detects illumination flickering at 50Hz
2406     * in the current scene.</p>
2407     * @see CaptureResult#STATISTICS_SCENE_FLICKER
2408     */
2409    public static final int STATISTICS_SCENE_FLICKER_50HZ = 1;
2410
2411    /**
2412     * <p>The camera device detects illumination flickering at 60Hz
2413     * in the current scene.</p>
2414     * @see CaptureResult#STATISTICS_SCENE_FLICKER
2415     */
2416    public static final int STATISTICS_SCENE_FLICKER_60HZ = 2;
2417
2418    //
2419    // Enumeration values for CaptureResult#SYNC_FRAME_NUMBER
2420    //
2421
2422    /**
2423     * <p>The current result is not yet fully synchronized to any request.</p>
2424     * <p>Synchronization is in progress, and reading metadata from this
2425     * result may include a mix of data that have taken effect since the
2426     * last synchronization time.</p>
2427     * <p>In some future result, within {@link CameraCharacteristics#SYNC_MAX_LATENCY android.sync.maxLatency} frames,
2428     * this value will update to the actual frame number frame number
2429     * the result is guaranteed to be synchronized to (as long as the
2430     * request settings remain constant).</p>
2431     *
2432     * @see CameraCharacteristics#SYNC_MAX_LATENCY
2433     * @see CaptureResult#SYNC_FRAME_NUMBER
2434     * @hide
2435     */
2436    public static final int SYNC_FRAME_NUMBER_CONVERGING = -1;
2437
2438    /**
2439     * <p>The current result's synchronization status is unknown.</p>
2440     * <p>The result may have already converged, or it may be in
2441     * progress.  Reading from this result may include some mix
2442     * of settings from past requests.</p>
2443     * <p>After a settings change, the new settings will eventually all
2444     * take effect for the output buffers and results. However, this
2445     * value will not change when that happens. Altering settings
2446     * rapidly may provide outcomes using mixes of settings from recent
2447     * requests.</p>
2448     * <p>This value is intended primarily for backwards compatibility with
2449     * the older camera implementations (for android.hardware.Camera).</p>
2450     * @see CaptureResult#SYNC_FRAME_NUMBER
2451     * @hide
2452     */
2453    public static final int SYNC_FRAME_NUMBER_UNKNOWN = -2;
2454
2455    /*~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~
2456     * End generated code
2457     *~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~O@*/
2458
2459}
2460