2 * Copyright (C) 2013 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 package android.hardware.camera2;
19 import android.annotation.NonNull;
20 import android.annotation.Nullable;
21 import android.hardware.camera2.impl.CameraMetadataNative;
22 import android.hardware.camera2.impl.PublicKey;
23 import android.hardware.camera2.impl.SyntheticKey;
24 import android.hardware.camera2.utils.HashCodeHelpers;
25 import android.hardware.camera2.utils.TypeReference;
26 import android.os.Parcel;
27 import android.os.Parcelable;
28 import android.view.Surface;
30 import java.util.Collection;
31 import java.util.Collections;
32 import java.util.HashSet;
33 import java.util.List;
34 import java.util.Objects;
38 * <p>An immutable package of settings and outputs needed to capture a single
39 * image from the camera device.</p>
41 * <p>Contains the configuration for the capture hardware (sensor, lens, flash),
42 * the processing pipeline, the control algorithms, and the output buffers. Also
43 * contains the list of target Surfaces to send image data to for this
46 * <p>CaptureRequests can be created by using a {@link Builder} instance,
47 * obtained by calling {@link CameraDevice#createCaptureRequest}</p>
49 * <p>CaptureRequests are given to {@link CameraCaptureSession#capture} or
50 * {@link CameraCaptureSession#setRepeatingRequest} to capture images from a camera.</p>
52 * <p>Each request can specify a different subset of target Surfaces for the
53 * camera to send the captured data to. All the surfaces used in a request must
54 * be part of the surface list given to the last call to
55 * {@link CameraDevice#createCaptureSession}, when the request is submitted to the
58 * <p>For example, a request meant for repeating preview might only include the
59 * Surface for the preview SurfaceView or SurfaceTexture, while a
60 * high-resolution still capture would also include a Surface from a ImageReader
61 * configured for high-resolution JPEG images.</p>
63 * <p>A reprocess capture request allows a previously-captured image from the camera device to be
64 * sent back to the device for further processing. It can be created with
65 * {@link CameraDevice#createReprocessCaptureRequest}, and used with a reprocessable capture session
66 * created with {@link CameraDevice#createReprocessableCaptureSession}.</p>
68 * @see CameraCaptureSession#capture
69 * @see CameraCaptureSession#setRepeatingRequest
70 * @see CameraCaptureSession#captureBurst
71 * @see CameraCaptureSession#setRepeatingBurst
72 * @see CameraDevice#createCaptureRequest
73 * @see CameraDevice#createReprocessCaptureRequest
75 public final class CaptureRequest extends CameraMetadata<CaptureRequest.Key<?>>
76 implements Parcelable {
79 * A {@code Key} is used to do capture request field lookups with
80 * {@link CaptureResult#get} or to set fields with
81 * {@link CaptureRequest.Builder#set(Key, Object)}.
83 * <p>For example, to set the crop rectangle for the next capture:
85 * Rect cropRectangle = new Rect(0, 0, 640, 480);
86 * captureRequestBuilder.set(SCALER_CROP_REGION, cropRectangle);
90 * <p>To enumerate over all possible keys for {@link CaptureResult}, see
91 * {@link CameraCharacteristics#getAvailableCaptureResultKeys}.</p>
93 * @see CaptureResult#get
94 * @see CameraCharacteristics#getAvailableCaptureResultKeys
96 public final static class Key<T> {
97 private final CameraMetadataNative.Key<T> mKey;
100 * Visible for testing and vendor extensions only.
104 public Key(String name, Class<T> type) {
105 mKey = new CameraMetadataNative.Key<T>(name, type);
109 * Visible for testing and vendor extensions only.
113 public Key(String name, TypeReference<T> typeReference) {
114 mKey = new CameraMetadataNative.Key<T>(name, typeReference);
118 * Return a camelCase, period separated name formatted like:
119 * {@code "root.section[.subsections].name"}.
121 * <p>Built-in keys exposed by the Android SDK are always prefixed with {@code "android."};
122 * keys that are device/platform-specific are prefixed with {@code "com."}.</p>
124 * <p>For example, {@code CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP} would
125 * have a name of {@code "android.scaler.streamConfigurationMap"}; whereas a device
126 * specific key might look like {@code "com.google.nexus.data.private"}.</p>
128 * @return String representation of the key name
131 public String getName() {
132 return mKey.getName();
139 public final int hashCode() {
140 return mKey.hashCode();
146 @SuppressWarnings("unchecked")
148 public final boolean equals(Object o) {
149 return o instanceof Key && ((Key<T>)o).mKey.equals(mKey);
153 * Return this {@link Key} as a string representation.
155 * <p>{@code "CaptureRequest.Key(%s)"}, where {@code %s} represents
156 * the name of this key as returned by {@link #getName}.</p>
158 * @return string representation of {@link Key}
162 public String toString() {
163 return String.format("CaptureRequest.Key(%s)", mKey.getName());
167 * Visible for CameraMetadataNative implementation only; do not use.
169 * TODO: Make this private or remove it altogether.
173 public CameraMetadataNative.Key<T> getNativeKey() {
177 @SuppressWarnings({ "unchecked" })
178 /*package*/ Key(CameraMetadataNative.Key<?> nativeKey) {
179 mKey = (CameraMetadataNative.Key<T>) nativeKey;
183 private final HashSet<Surface> mSurfaceSet;
184 private final CameraMetadataNative mSettings;
185 private boolean mIsReprocess;
186 // If this request is part of constrained high speed request list that was created by
187 // {@link android.hardware.camera2.CameraConstrainedHighSpeedCaptureSession#createHighSpeedRequestList}
188 private boolean mIsPartOfCHSRequestList = false;
189 // Each reprocess request must be tied to a reprocessable session ID.
190 // Valid only for reprocess requests (mIsReprocess == true).
191 private int mReprocessableSessionId;
193 private Object mUserTag;
196 * Construct empty request.
198 * Used by Binder to unparcel this object only.
200 private CaptureRequest() {
201 mSettings = new CameraMetadataNative();
202 mSurfaceSet = new HashSet<Surface>();
203 mIsReprocess = false;
204 mReprocessableSessionId = CameraCaptureSession.SESSION_ID_NONE;
208 * Clone from source capture request.
210 * Used by the Builder to create an immutable copy.
212 @SuppressWarnings("unchecked")
213 private CaptureRequest(CaptureRequest source) {
214 mSettings = new CameraMetadataNative(source.mSettings);
215 mSurfaceSet = (HashSet<Surface>) source.mSurfaceSet.clone();
216 mIsReprocess = source.mIsReprocess;
217 mIsPartOfCHSRequestList = source.mIsPartOfCHSRequestList;
218 mReprocessableSessionId = source.mReprocessableSessionId;
219 mUserTag = source.mUserTag;
223 * Take ownership of passed-in settings.
225 * Used by the Builder to create a mutable CaptureRequest.
227 * @param settings Settings for this capture request.
228 * @param isReprocess Indicates whether to create a reprocess capture request. {@code true}
229 * to create a reprocess capture request. {@code false} to create a regular
231 * @param reprocessableSessionId The ID of the camera capture session this capture is created
232 * for. This is used to validate if the application submits a
233 * reprocess capture request to the same session where
234 * the {@link TotalCaptureResult}, used to create the reprocess
235 * capture, came from.
237 * @throws IllegalArgumentException If creating a reprocess capture request with an invalid
238 * reprocessableSessionId.
240 * @see CameraDevice#createReprocessCaptureRequest
242 private CaptureRequest(CameraMetadataNative settings, boolean isReprocess,
243 int reprocessableSessionId) {
244 mSettings = CameraMetadataNative.move(settings);
245 mSurfaceSet = new HashSet<Surface>();
246 mIsReprocess = isReprocess;
248 if (reprocessableSessionId == CameraCaptureSession.SESSION_ID_NONE) {
249 throw new IllegalArgumentException("Create a reprocess capture request with an " +
250 "invalid session ID: " + reprocessableSessionId);
252 mReprocessableSessionId = reprocessableSessionId;
254 mReprocessableSessionId = CameraCaptureSession.SESSION_ID_NONE;
259 * Get a capture request field value.
261 * <p>The field definitions can be found in {@link CaptureRequest}.</p>
263 * <p>Querying the value for the same key more than once will return a value
264 * which is equal to the previous queried value.</p>
266 * @throws IllegalArgumentException if the key was not valid
268 * @param key The result field to read.
269 * @return The value of that key, or {@code null} if the field is not set.
272 public <T> T get(Key<T> key) {
273 return mSettings.get(key);
280 @SuppressWarnings("unchecked")
282 protected <T> T getProtected(Key<?> key) {
283 return (T) mSettings.get(key);
290 @SuppressWarnings("unchecked")
292 protected Class<Key<?>> getKeyClass() {
293 Object thisClass = Key.class;
294 return (Class<Key<?>>)thisClass;
302 public List<Key<?>> getKeys() {
303 // Force the javadoc for this function to show up on the CaptureRequest page
304 return super.getKeys();
308 * Retrieve the tag for this request, if any.
310 * <p>This tag is not used for anything by the camera device, but can be
311 * used by an application to easily identify a CaptureRequest when it is
313 * {@link CameraCaptureSession.CaptureCallback#onCaptureCompleted CaptureCallback.onCaptureCompleted}
316 * @return the last tag Object set on this request, or {@code null} if
317 * no tag has been set.
318 * @see Builder#setTag
321 public Object getTag() {
326 * Determine if this is a reprocess capture request.
328 * <p>A reprocess capture request produces output images from an input buffer from the
329 * {@link CameraCaptureSession}'s input {@link Surface}. A reprocess capture request can be
330 * created by {@link CameraDevice#createReprocessCaptureRequest}.</p>
332 * @return {@code true} if this is a reprocess capture request. {@code false} if this is not a
333 * reprocess capture request.
335 * @see CameraDevice#createReprocessCaptureRequest
337 public boolean isReprocess() {
342 * <p>Determine if this request is part of a constrained high speed request list that was
344 * {@link android.hardware.camera2.CameraConstrainedHighSpeedCaptureSession#createHighSpeedRequestList}.
345 * A constrained high speed request list contains some constrained high speed capture requests
346 * with certain interleaved pattern that is suitable for high speed preview/video streaming. An
347 * active constrained high speed capture session only accepts constrained high speed request
348 * lists. This method can be used to do the sanity check when a constrained high speed capture
349 * session receives a request list via {@link CameraCaptureSession#setRepeatingBurst} or
350 * {@link CameraCaptureSession#captureBurst}. </p>
353 * @return {@code true} if this request is part of a constrained high speed request list,
354 * {@code false} otherwise.
358 public boolean isPartOfCRequestList() {
359 return mIsPartOfCHSRequestList;
363 * Returns a copy of the underlying {@link CameraMetadataNative}.
366 public CameraMetadataNative getNativeCopy() {
367 return new CameraMetadataNative(mSettings);
371 * Get the reprocessable session ID this reprocess capture request is associated with.
373 * @return the reprocessable session ID this reprocess capture request is associated with
375 * @throws IllegalStateException if this capture request is not a reprocess capture request.
378 public int getReprocessableSessionId() {
379 if (mIsReprocess == false ||
380 mReprocessableSessionId == CameraCaptureSession.SESSION_ID_NONE) {
381 throw new IllegalStateException("Getting the reprocessable session ID for a "+
382 "non-reprocess capture request is illegal.");
384 return mReprocessableSessionId;
388 * Determine whether this CaptureRequest is equal to another CaptureRequest.
390 * <p>A request is considered equal to another is if it's set of key/values is equal, it's
391 * list of output surfaces is equal, the user tag is equal, and the return values of
392 * isReprocess() are equal.</p>
394 * @param other Another instance of CaptureRequest.
396 * @return True if the requests are the same, false otherwise.
399 public boolean equals(Object other) {
400 return other instanceof CaptureRequest
401 && equals((CaptureRequest)other);
404 private boolean equals(CaptureRequest other) {
406 && Objects.equals(mUserTag, other.mUserTag)
407 && mSurfaceSet.equals(other.mSurfaceSet)
408 && mSettings.equals(other.mSettings)
409 && mIsReprocess == other.mIsReprocess
410 && mReprocessableSessionId == other.mReprocessableSessionId;
414 public int hashCode() {
415 return HashCodeHelpers.hashCodeGeneric(mSettings, mSurfaceSet, mUserTag);
418 public static final Parcelable.Creator<CaptureRequest> CREATOR =
419 new Parcelable.Creator<CaptureRequest>() {
421 public CaptureRequest createFromParcel(Parcel in) {
422 CaptureRequest request = new CaptureRequest();
423 request.readFromParcel(in);
429 public CaptureRequest[] newArray(int size) {
430 return new CaptureRequest[size];
435 * Expand this object from a Parcel.
436 * Hidden since this breaks the immutability of CaptureRequest, but is
437 * needed to receive CaptureRequests with aidl.
439 * @param in The parcel from which the object should be read
442 private void readFromParcel(Parcel in) {
443 mSettings.readFromParcel(in);
447 Parcelable[] parcelableArray = in.readParcelableArray(Surface.class.getClassLoader());
449 if (parcelableArray == null) {
453 for (Parcelable p : parcelableArray) {
454 Surface s = (Surface) p;
458 mIsReprocess = (in.readInt() == 0) ? false : true;
459 mReprocessableSessionId = CameraCaptureSession.SESSION_ID_NONE;
463 public int describeContents() {
468 public void writeToParcel(Parcel dest, int flags) {
469 mSettings.writeToParcel(dest, flags);
470 dest.writeParcelableArray(mSurfaceSet.toArray(new Surface[mSurfaceSet.size()]), flags);
471 dest.writeInt(mIsReprocess ? 1 : 0);
477 public boolean containsTarget(Surface surface) {
478 return mSurfaceSet.contains(surface);
484 public Collection<Surface> getTargets() {
485 return Collections.unmodifiableCollection(mSurfaceSet);
489 * A builder for capture requests.
491 * <p>To obtain a builder instance, use the
492 * {@link CameraDevice#createCaptureRequest} method, which initializes the
493 * request fields to one of the templates defined in {@link CameraDevice}.
495 * @see CameraDevice#createCaptureRequest
496 * @see CameraDevice#TEMPLATE_PREVIEW
497 * @see CameraDevice#TEMPLATE_RECORD
498 * @see CameraDevice#TEMPLATE_STILL_CAPTURE
499 * @see CameraDevice#TEMPLATE_VIDEO_SNAPSHOT
500 * @see CameraDevice#TEMPLATE_MANUAL
502 public final static class Builder {
504 private final CaptureRequest mRequest;
507 * Initialize the builder using the template; the request takes
508 * ownership of the template.
510 * @param template Template settings for this capture request.
511 * @param reprocess Indicates whether to create a reprocess capture request. {@code true}
512 * to create a reprocess capture request. {@code false} to create a regular
514 * @param reprocessableSessionId The ID of the camera capture session this capture is
515 * created for. This is used to validate if the application
516 * submits a reprocess capture request to the same session
517 * where the {@link TotalCaptureResult}, used to create the
518 * reprocess capture, came from.
520 * @throws IllegalArgumentException If creating a reprocess capture request with an invalid
521 * reprocessableSessionId.
524 public Builder(CameraMetadataNative template, boolean reprocess,
525 int reprocessableSessionId) {
526 mRequest = new CaptureRequest(template, reprocess, reprocessableSessionId);
530 * <p>Add a surface to the list of targets for this request</p>
532 * <p>The Surface added must be one of the surfaces included in the most
533 * recent call to {@link CameraDevice#createCaptureSession}, when the
534 * request is given to the camera device.</p>
536 * <p>Adding a target more than once has no effect.</p>
538 * @param outputTarget Surface to use as an output target for this request
540 public void addTarget(@NonNull Surface outputTarget) {
541 mRequest.mSurfaceSet.add(outputTarget);
545 * <p>Remove a surface from the list of targets for this request.</p>
547 * <p>Removing a target that is not currently added has no effect.</p>
549 * @param outputTarget Surface to use as an output target for this request
551 public void removeTarget(@NonNull Surface outputTarget) {
552 mRequest.mSurfaceSet.remove(outputTarget);
556 * Set a capture request field to a value. The field definitions can be
557 * found in {@link CaptureRequest}.
559 * @param key The metadata field to write.
560 * @param value The value to set the field to, which must be of a matching
563 public <T> void set(@NonNull Key<T> key, T value) {
564 mRequest.mSettings.set(key, value);
568 * Get a capture request field value. The field definitions can be
569 * found in {@link CaptureRequest}.
571 * @throws IllegalArgumentException if the key was not valid
573 * @param key The metadata field to read.
574 * @return The value of that key, or {@code null} if the field is not set.
577 public <T> T get(Key<T> key) {
578 return mRequest.mSettings.get(key);
582 * Set a tag for this request.
584 * <p>This tag is not used for anything by the camera device, but can be
585 * used by an application to easily identify a CaptureRequest when it is
587 * {@link CameraCaptureSession.CaptureCallback#onCaptureCompleted CaptureCallback.onCaptureCompleted}
589 * @param tag an arbitrary Object to store with this request
590 * @see CaptureRequest#getTag
592 public void setTag(@Nullable Object tag) {
593 mRequest.mUserTag = tag;
597 * <p>Mark this request as part of a constrained high speed request list created by
598 * {@link android.hardware.camera2.CameraConstrainedHighSpeedCaptureSession#createHighSpeedRequestList}.
599 * A constrained high speed request list contains some constrained high speed capture
600 * requests with certain interleaved pattern that is suitable for high speed preview/video
605 public void setPartOfCHSRequestList(boolean partOfCHSList) {
606 mRequest.mIsPartOfCHSRequestList = partOfCHSList;
610 * Build a request using the current target Surfaces and settings.
611 * <p>Note that, although it is possible to create a {@code CaptureRequest} with no target
612 * {@link Surface}s, passing such a request into {@link CameraCaptureSession#capture},
613 * {@link CameraCaptureSession#captureBurst},
614 * {@link CameraCaptureSession#setRepeatingBurst}, or
615 * {@link CameraCaptureSession#setRepeatingRequest} will cause that method to throw an
616 * {@link IllegalArgumentException}.</p>
618 * @return A new capture request instance, ready for submission to the
622 public CaptureRequest build() {
623 return new CaptureRequest(mRequest);
629 public boolean isEmpty() {
630 return mRequest.mSettings.isEmpty();
635 /*@O~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~
636 * The key entries below this point are generated from metadata
637 * definitions in /system/media/camera/docs. Do not modify by hand or
638 * modify the comment blocks at the start or end.
639 *~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~*/
642 * <p>The mode control selects how the image data is converted from the
643 * sensor's native color into linear sRGB color.</p>
644 * <p>When auto-white balance (AWB) is enabled with {@link CaptureRequest#CONTROL_AWB_MODE android.control.awbMode}, this
645 * control is overridden by the AWB routine. When AWB is disabled, the
646 * application controls how the color mapping is performed.</p>
647 * <p>We define the expected processing pipeline below. For consistency
648 * across devices, this is always the case with TRANSFORM_MATRIX.</p>
649 * <p>When either FULL or HIGH_QUALITY is used, the camera device may
650 * do additional processing but {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} and
651 * {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform} will still be provided by the
652 * camera device (in the results) and be roughly correct.</p>
653 * <p>Switching to TRANSFORM_MATRIX and using the data provided from
654 * FAST or HIGH_QUALITY will yield a picture with the same white point
655 * as what was produced by the camera device in the earlier frame.</p>
656 * <p>The expected processing pipeline is as follows:</p>
657 * <p><img alt="White balance processing pipeline" src="../../../../images/camera2/metadata/android.colorCorrection.mode/processing_pipeline.png" /></p>
658 * <p>The white balance is encoded by two values, a 4-channel white-balance
659 * gain vector (applied in the Bayer domain), and a 3x3 color transform
660 * matrix (applied after demosaic).</p>
661 * <p>The 4-channel white-balance gains are defined as:</p>
662 * <pre><code>{@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} = [ R G_even G_odd B ]
664 * <p>where <code>G_even</code> is the gain for green pixels on even rows of the
665 * output, and <code>G_odd</code> is the gain for green pixels on the odd rows.
666 * These may be identical for a given camera device implementation; if
667 * the camera device does not support a separate gain for even/odd green
668 * channels, it will use the <code>G_even</code> value, and write <code>G_odd</code> equal to
669 * <code>G_even</code> in the output result metadata.</p>
670 * <p>The matrices for color transforms are defined as a 9-entry vector:</p>
671 * <pre><code>{@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform} = [ I0 I1 I2 I3 I4 I5 I6 I7 I8 ]
673 * <p>which define a transform from input sensor colors, <code>P_in = [ r g b ]</code>,
674 * to output linear sRGB, <code>P_out = [ r' g' b' ]</code>,</p>
675 * <p>with colors as follows:</p>
676 * <pre><code>r' = I0r + I1g + I2b
677 * g' = I3r + I4g + I5b
678 * b' = I6r + I7g + I8b
680 * <p>Both the input and output value ranges must match. Overflow/underflow
681 * values are clipped to fit within the range.</p>
682 * <p><b>Possible values:</b>
684 * <li>{@link #COLOR_CORRECTION_MODE_TRANSFORM_MATRIX TRANSFORM_MATRIX}</li>
685 * <li>{@link #COLOR_CORRECTION_MODE_FAST FAST}</li>
686 * <li>{@link #COLOR_CORRECTION_MODE_HIGH_QUALITY HIGH_QUALITY}</li>
688 * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
689 * <p><b>Full capability</b> -
690 * Present on all camera devices that report being {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_FULL HARDWARE_LEVEL_FULL} devices in the
691 * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
693 * @see CaptureRequest#COLOR_CORRECTION_GAINS
694 * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
695 * @see CaptureRequest#CONTROL_AWB_MODE
696 * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
697 * @see #COLOR_CORRECTION_MODE_TRANSFORM_MATRIX
698 * @see #COLOR_CORRECTION_MODE_FAST
699 * @see #COLOR_CORRECTION_MODE_HIGH_QUALITY
702 public static final Key<Integer> COLOR_CORRECTION_MODE =
703 new Key<Integer>("android.colorCorrection.mode", int.class);
706 * <p>A color transform matrix to use to transform
707 * from sensor RGB color space to output linear sRGB color space.</p>
708 * <p>This matrix is either set by the camera device when the request
709 * {@link CaptureRequest#COLOR_CORRECTION_MODE android.colorCorrection.mode} is not TRANSFORM_MATRIX, or
710 * directly by the application in the request when the
711 * {@link CaptureRequest#COLOR_CORRECTION_MODE android.colorCorrection.mode} is TRANSFORM_MATRIX.</p>
712 * <p>In the latter case, the camera device may round the matrix to account
713 * for precision issues; the final rounded matrix should be reported back
714 * in this matrix result metadata. The transform should keep the magnitude
715 * of the output color values within <code>[0, 1.0]</code> (assuming input color
716 * values is within the normalized range <code>[0, 1.0]</code>), or clipping may occur.</p>
717 * <p>The valid range of each matrix element varies on different devices, but
718 * values within [-1.5, 3.0] are guaranteed not to be clipped.</p>
719 * <p><b>Units</b>: Unitless scale factors</p>
720 * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
721 * <p><b>Full capability</b> -
722 * Present on all camera devices that report being {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_FULL HARDWARE_LEVEL_FULL} devices in the
723 * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
725 * @see CaptureRequest#COLOR_CORRECTION_MODE
726 * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
729 public static final Key<android.hardware.camera2.params.ColorSpaceTransform> COLOR_CORRECTION_TRANSFORM =
730 new Key<android.hardware.camera2.params.ColorSpaceTransform>("android.colorCorrection.transform", android.hardware.camera2.params.ColorSpaceTransform.class);
733 * <p>Gains applying to Bayer raw color channels for
735 * <p>These per-channel gains are either set by the camera device
736 * when the request {@link CaptureRequest#COLOR_CORRECTION_MODE android.colorCorrection.mode} is not
737 * TRANSFORM_MATRIX, or directly by the application in the
738 * request when the {@link CaptureRequest#COLOR_CORRECTION_MODE android.colorCorrection.mode} is
739 * TRANSFORM_MATRIX.</p>
740 * <p>The gains in the result metadata are the gains actually
741 * applied by the camera device to the current frame.</p>
742 * <p>The valid range of gains varies on different devices, but gains
743 * between [1.0, 3.0] are guaranteed not to be clipped. Even if a given
744 * device allows gains below 1.0, this is usually not recommended because
745 * this can create color artifacts.</p>
746 * <p><b>Units</b>: Unitless gain factors</p>
747 * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
748 * <p><b>Full capability</b> -
749 * Present on all camera devices that report being {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_FULL HARDWARE_LEVEL_FULL} devices in the
750 * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
752 * @see CaptureRequest#COLOR_CORRECTION_MODE
753 * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
756 public static final Key<android.hardware.camera2.params.RggbChannelVector> COLOR_CORRECTION_GAINS =
757 new Key<android.hardware.camera2.params.RggbChannelVector>("android.colorCorrection.gains", android.hardware.camera2.params.RggbChannelVector.class);
760 * <p>Mode of operation for the chromatic aberration correction algorithm.</p>
761 * <p>Chromatic (color) aberration is caused by the fact that different wavelengths of light
762 * can not focus on the same point after exiting from the lens. This metadata defines
763 * the high level control of chromatic aberration correction algorithm, which aims to
764 * minimize the chromatic artifacts that may occur along the object boundaries in an
766 * <p>FAST/HIGH_QUALITY both mean that camera device determined aberration
767 * correction will be applied. HIGH_QUALITY mode indicates that the camera device will
768 * use the highest-quality aberration correction algorithms, even if it slows down
769 * capture rate. FAST means the camera device will not slow down capture rate when
770 * applying aberration correction.</p>
771 * <p>LEGACY devices will always be in FAST mode.</p>
772 * <p><b>Possible values:</b>
774 * <li>{@link #COLOR_CORRECTION_ABERRATION_MODE_OFF OFF}</li>
775 * <li>{@link #COLOR_CORRECTION_ABERRATION_MODE_FAST FAST}</li>
776 * <li>{@link #COLOR_CORRECTION_ABERRATION_MODE_HIGH_QUALITY HIGH_QUALITY}</li>
778 * <p><b>Available values for this device:</b><br>
779 * {@link CameraCharacteristics#COLOR_CORRECTION_AVAILABLE_ABERRATION_MODES android.colorCorrection.availableAberrationModes}</p>
780 * <p>This key is available on all devices.</p>
782 * @see CameraCharacteristics#COLOR_CORRECTION_AVAILABLE_ABERRATION_MODES
783 * @see #COLOR_CORRECTION_ABERRATION_MODE_OFF
784 * @see #COLOR_CORRECTION_ABERRATION_MODE_FAST
785 * @see #COLOR_CORRECTION_ABERRATION_MODE_HIGH_QUALITY
788 public static final Key<Integer> COLOR_CORRECTION_ABERRATION_MODE =
789 new Key<Integer>("android.colorCorrection.aberrationMode", int.class);
792 * <p>The desired setting for the camera device's auto-exposure
793 * algorithm's antibanding compensation.</p>
794 * <p>Some kinds of lighting fixtures, such as some fluorescent
795 * lights, flicker at the rate of the power supply frequency
796 * (60Hz or 50Hz, depending on country). While this is
797 * typically not noticeable to a person, it can be visible to
798 * a camera device. If a camera sets its exposure time to the
799 * wrong value, the flicker may become visible in the
800 * viewfinder as flicker or in a final captured image, as a
801 * set of variable-brightness bands across the image.</p>
802 * <p>Therefore, the auto-exposure routines of camera devices
803 * include antibanding routines that ensure that the chosen
804 * exposure value will not cause such banding. The choice of
805 * exposure time depends on the rate of flicker, which the
806 * camera device can detect automatically, or the expected
807 * rate can be selected by the application using this
809 * <p>A given camera device may not support all of the possible
810 * options for the antibanding mode. The
811 * {@link CameraCharacteristics#CONTROL_AE_AVAILABLE_ANTIBANDING_MODES android.control.aeAvailableAntibandingModes} key contains
812 * the available modes for a given camera device.</p>
813 * <p>AUTO mode is the default if it is available on given
814 * camera device. When AUTO mode is not available, the
815 * default will be either 50HZ or 60HZ, and both 50HZ
816 * and 60HZ will be available.</p>
817 * <p>If manual exposure control is enabled (by setting
818 * {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode} or {@link CaptureRequest#CONTROL_MODE android.control.mode} to OFF),
819 * then this setting has no effect, and the application must
820 * ensure it selects exposure times that do not cause banding
821 * issues. The {@link CaptureResult#STATISTICS_SCENE_FLICKER android.statistics.sceneFlicker} key can assist
822 * the application in this.</p>
823 * <p><b>Possible values:</b>
825 * <li>{@link #CONTROL_AE_ANTIBANDING_MODE_OFF OFF}</li>
826 * <li>{@link #CONTROL_AE_ANTIBANDING_MODE_50HZ 50HZ}</li>
827 * <li>{@link #CONTROL_AE_ANTIBANDING_MODE_60HZ 60HZ}</li>
828 * <li>{@link #CONTROL_AE_ANTIBANDING_MODE_AUTO AUTO}</li>
830 * <p><b>Available values for this device:</b><br></p>
831 * <p>{@link CameraCharacteristics#CONTROL_AE_AVAILABLE_ANTIBANDING_MODES android.control.aeAvailableAntibandingModes}</p>
832 * <p>This key is available on all devices.</p>
834 * @see CameraCharacteristics#CONTROL_AE_AVAILABLE_ANTIBANDING_MODES
835 * @see CaptureRequest#CONTROL_AE_MODE
836 * @see CaptureRequest#CONTROL_MODE
837 * @see CaptureResult#STATISTICS_SCENE_FLICKER
838 * @see #CONTROL_AE_ANTIBANDING_MODE_OFF
839 * @see #CONTROL_AE_ANTIBANDING_MODE_50HZ
840 * @see #CONTROL_AE_ANTIBANDING_MODE_60HZ
841 * @see #CONTROL_AE_ANTIBANDING_MODE_AUTO
844 public static final Key<Integer> CONTROL_AE_ANTIBANDING_MODE =
845 new Key<Integer>("android.control.aeAntibandingMode", int.class);
848 * <p>Adjustment to auto-exposure (AE) target image
850 * <p>The adjustment is measured as a count of steps, with the
851 * step size defined by {@link CameraCharacteristics#CONTROL_AE_COMPENSATION_STEP android.control.aeCompensationStep} and the
852 * allowed range by {@link CameraCharacteristics#CONTROL_AE_COMPENSATION_RANGE android.control.aeCompensationRange}.</p>
853 * <p>For example, if the exposure value (EV) step is 0.333, '6'
854 * will mean an exposure compensation of +2 EV; -3 will mean an
855 * exposure compensation of -1 EV. One EV represents a doubling
856 * of image brightness. Note that this control will only be
857 * effective if {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode} <code>!=</code> OFF. This control
858 * will take effect even when {@link CaptureRequest#CONTROL_AE_LOCK android.control.aeLock} <code>== true</code>.</p>
859 * <p>In the event of exposure compensation value being changed, camera device
860 * may take several frames to reach the newly requested exposure target.
861 * During that time, {@link CaptureResult#CONTROL_AE_STATE android.control.aeState} field will be in the SEARCHING
862 * state. Once the new exposure target is reached, {@link CaptureResult#CONTROL_AE_STATE android.control.aeState} will
863 * change from SEARCHING to either CONVERGED, LOCKED (if AE lock is enabled), or
864 * FLASH_REQUIRED (if the scene is too dark for still capture).</p>
865 * <p><b>Units</b>: Compensation steps</p>
866 * <p><b>Range of valid values:</b><br>
867 * {@link CameraCharacteristics#CONTROL_AE_COMPENSATION_RANGE android.control.aeCompensationRange}</p>
868 * <p>This key is available on all devices.</p>
870 * @see CameraCharacteristics#CONTROL_AE_COMPENSATION_RANGE
871 * @see CameraCharacteristics#CONTROL_AE_COMPENSATION_STEP
872 * @see CaptureRequest#CONTROL_AE_LOCK
873 * @see CaptureRequest#CONTROL_AE_MODE
874 * @see CaptureResult#CONTROL_AE_STATE
877 public static final Key<Integer> CONTROL_AE_EXPOSURE_COMPENSATION =
878 new Key<Integer>("android.control.aeExposureCompensation", int.class);
881 * <p>Whether auto-exposure (AE) is currently locked to its latest
882 * calculated values.</p>
883 * <p>When set to <code>true</code> (ON), the AE algorithm is locked to its latest parameters,
884 * and will not change exposure settings until the lock is set to <code>false</code> (OFF).</p>
885 * <p>Note that even when AE is locked, the flash may be fired if
886 * the {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode} is ON_AUTO_FLASH /
887 * ON_ALWAYS_FLASH / ON_AUTO_FLASH_REDEYE.</p>
888 * <p>When {@link CaptureRequest#CONTROL_AE_EXPOSURE_COMPENSATION android.control.aeExposureCompensation} is changed, even if the AE lock
889 * is ON, the camera device will still adjust its exposure value.</p>
890 * <p>If AE precapture is triggered (see {@link CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER android.control.aePrecaptureTrigger})
891 * when AE is already locked, the camera device will not change the exposure time
892 * ({@link CaptureRequest#SENSOR_EXPOSURE_TIME android.sensor.exposureTime}) and sensitivity ({@link CaptureRequest#SENSOR_SENSITIVITY android.sensor.sensitivity})
893 * parameters. The flash may be fired if the {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode}
894 * is ON_AUTO_FLASH/ON_AUTO_FLASH_REDEYE and the scene is too dark. If the
895 * {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode} is ON_ALWAYS_FLASH, the scene may become overexposed.
896 * Similarly, AE precapture trigger CANCEL has no effect when AE is already locked.</p>
897 * <p>When an AE precapture sequence is triggered, AE unlock will not be able to unlock
898 * the AE if AE is locked by the camera device internally during precapture metering
899 * sequence In other words, submitting requests with AE unlock has no effect for an
900 * ongoing precapture metering sequence. Otherwise, the precapture metering sequence
901 * will never succeed in a sequence of preview requests where AE lock is always set
902 * to <code>false</code>.</p>
903 * <p>Since the camera device has a pipeline of in-flight requests, the settings that
904 * get locked do not necessarily correspond to the settings that were present in the
905 * latest capture result received from the camera device, since additional captures
906 * and AE updates may have occurred even before the result was sent out. If an
907 * application is switching between automatic and manual control and wishes to eliminate
908 * any flicker during the switch, the following procedure is recommended:</p>
910 * <li>Starting in auto-AE mode:</li>
912 * <li>Wait for the first result to be output that has the AE locked</li>
913 * <li>Copy exposure settings from that result into a request, set the request to manual AE</li>
914 * <li>Submit the capture request, proceed to run manual AE as desired.</li>
916 * <p>See {@link CaptureResult#CONTROL_AE_STATE android.control.aeState} for AE lock related state transition details.</p>
917 * <p>This key is available on all devices.</p>
919 * @see CaptureRequest#CONTROL_AE_EXPOSURE_COMPENSATION
920 * @see CaptureRequest#CONTROL_AE_MODE
921 * @see CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
922 * @see CaptureResult#CONTROL_AE_STATE
923 * @see CaptureRequest#SENSOR_EXPOSURE_TIME
924 * @see CaptureRequest#SENSOR_SENSITIVITY
927 public static final Key<Boolean> CONTROL_AE_LOCK =
928 new Key<Boolean>("android.control.aeLock", boolean.class);
931 * <p>The desired mode for the camera device's
932 * auto-exposure routine.</p>
933 * <p>This control is only effective if {@link CaptureRequest#CONTROL_MODE android.control.mode} is
935 * <p>When set to any of the ON modes, the camera device's
936 * auto-exposure routine is enabled, overriding the
937 * application's selected exposure time, sensor sensitivity,
938 * and frame duration ({@link CaptureRequest#SENSOR_EXPOSURE_TIME android.sensor.exposureTime},
939 * {@link CaptureRequest#SENSOR_SENSITIVITY android.sensor.sensitivity}, and
940 * {@link CaptureRequest#SENSOR_FRAME_DURATION android.sensor.frameDuration}). If one of the FLASH modes
941 * is selected, the camera device's flash unit controls are
942 * also overridden.</p>
943 * <p>The FLASH modes are only available if the camera device
944 * has a flash unit ({@link CameraCharacteristics#FLASH_INFO_AVAILABLE android.flash.info.available} is <code>true</code>).</p>
945 * <p>If flash TORCH mode is desired, this field must be set to
946 * ON or OFF, and {@link CaptureRequest#FLASH_MODE android.flash.mode} set to TORCH.</p>
947 * <p>When set to any of the ON modes, the values chosen by the
948 * camera device auto-exposure routine for the overridden
949 * fields for a given capture will be available in its
951 * <p><b>Possible values:</b>
953 * <li>{@link #CONTROL_AE_MODE_OFF OFF}</li>
954 * <li>{@link #CONTROL_AE_MODE_ON ON}</li>
955 * <li>{@link #CONTROL_AE_MODE_ON_AUTO_FLASH ON_AUTO_FLASH}</li>
956 * <li>{@link #CONTROL_AE_MODE_ON_ALWAYS_FLASH ON_ALWAYS_FLASH}</li>
957 * <li>{@link #CONTROL_AE_MODE_ON_AUTO_FLASH_REDEYE ON_AUTO_FLASH_REDEYE}</li>
959 * <p><b>Available values for this device:</b><br>
960 * {@link CameraCharacteristics#CONTROL_AE_AVAILABLE_MODES android.control.aeAvailableModes}</p>
961 * <p>This key is available on all devices.</p>
963 * @see CameraCharacteristics#CONTROL_AE_AVAILABLE_MODES
964 * @see CaptureRequest#CONTROL_MODE
965 * @see CameraCharacteristics#FLASH_INFO_AVAILABLE
966 * @see CaptureRequest#FLASH_MODE
967 * @see CaptureRequest#SENSOR_EXPOSURE_TIME
968 * @see CaptureRequest#SENSOR_FRAME_DURATION
969 * @see CaptureRequest#SENSOR_SENSITIVITY
970 * @see #CONTROL_AE_MODE_OFF
971 * @see #CONTROL_AE_MODE_ON
972 * @see #CONTROL_AE_MODE_ON_AUTO_FLASH
973 * @see #CONTROL_AE_MODE_ON_ALWAYS_FLASH
974 * @see #CONTROL_AE_MODE_ON_AUTO_FLASH_REDEYE
977 public static final Key<Integer> CONTROL_AE_MODE =
978 new Key<Integer>("android.control.aeMode", int.class);
981 * <p>List of metering areas to use for auto-exposure adjustment.</p>
982 * <p>Not available if {@link CameraCharacteristics#CONTROL_MAX_REGIONS_AE android.control.maxRegionsAe} is 0.
983 * Otherwise will always be present.</p>
984 * <p>The maximum number of regions supported by the device is determined by the value
985 * of {@link CameraCharacteristics#CONTROL_MAX_REGIONS_AE android.control.maxRegionsAe}.</p>
986 * <p>The coordinate system is based on the active pixel array,
987 * with (0,0) being the top-left pixel in the active pixel array, and
988 * ({@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}.width - 1,
989 * {@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}.height - 1) being the
990 * bottom-right pixel in the active pixel array.</p>
991 * <p>The weight must be within <code>[0, 1000]</code>, and represents a weight
992 * for every pixel in the area. This means that a large metering area
993 * with the same weight as a smaller area will have more effect in
994 * the metering result. Metering areas can partially overlap and the
995 * camera device will add the weights in the overlap region.</p>
996 * <p>The weights are relative to weights of other exposure metering regions, so if only one
997 * region is used, all non-zero weights will have the same effect. A region with 0
998 * weight is ignored.</p>
999 * <p>If all regions have 0 weight, then no specific metering area needs to be used by the
1000 * camera device.</p>
1001 * <p>If the metering region is outside the used {@link CaptureRequest#SCALER_CROP_REGION android.scaler.cropRegion} returned in
1002 * capture result metadata, the camera device will ignore the sections outside the crop
1003 * region and output only the intersection rectangle as the metering region in the result
1004 * metadata. If the region is entirely outside the crop region, it will be ignored and
1005 * not reported in the result metadata.</p>
1006 * <p><b>Units</b>: Pixel coordinates within {@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}</p>
1007 * <p><b>Range of valid values:</b><br>
1008 * Coordinates must be between <code>[(0,0), (width, height))</code> of
1009 * {@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}</p>
1010 * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
1012 * @see CameraCharacteristics#CONTROL_MAX_REGIONS_AE
1013 * @see CaptureRequest#SCALER_CROP_REGION
1014 * @see CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE
1017 public static final Key<android.hardware.camera2.params.MeteringRectangle[]> CONTROL_AE_REGIONS =
1018 new Key<android.hardware.camera2.params.MeteringRectangle[]>("android.control.aeRegions", android.hardware.camera2.params.MeteringRectangle[].class);
1021 * <p>Range over which the auto-exposure routine can
1022 * adjust the capture frame rate to maintain good
1024 * <p>Only constrains auto-exposure (AE) algorithm, not
1025 * manual control of {@link CaptureRequest#SENSOR_EXPOSURE_TIME android.sensor.exposureTime} and
1026 * {@link CaptureRequest#SENSOR_FRAME_DURATION android.sensor.frameDuration}.</p>
1027 * <p><b>Units</b>: Frames per second (FPS)</p>
1028 * <p><b>Range of valid values:</b><br>
1029 * Any of the entries in {@link CameraCharacteristics#CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES android.control.aeAvailableTargetFpsRanges}</p>
1030 * <p>This key is available on all devices.</p>
1032 * @see CameraCharacteristics#CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES
1033 * @see CaptureRequest#SENSOR_EXPOSURE_TIME
1034 * @see CaptureRequest#SENSOR_FRAME_DURATION
1037 public static final Key<android.util.Range<Integer>> CONTROL_AE_TARGET_FPS_RANGE =
1038 new Key<android.util.Range<Integer>>("android.control.aeTargetFpsRange", new TypeReference<android.util.Range<Integer>>() {{ }});
1041 * <p>Whether the camera device will trigger a precapture
1042 * metering sequence when it processes this request.</p>
1043 * <p>This entry is normally set to IDLE, or is not
1044 * included at all in the request settings. When included and
1045 * set to START, the camera device will trigger the auto-exposure (AE)
1046 * precapture metering sequence.</p>
1047 * <p>When set to CANCEL, the camera device will cancel any active
1048 * precapture metering trigger, and return to its initial AE state.
1049 * If a precapture metering sequence is already completed, and the camera
1050 * device has implicitly locked the AE for subsequent still capture, the
1051 * CANCEL trigger will unlock the AE and return to its initial AE state.</p>
1052 * <p>The precapture sequence should be triggered before starting a
1053 * high-quality still capture for final metering decisions to
1054 * be made, and for firing pre-capture flash pulses to estimate
1055 * scene brightness and required final capture flash power, when
1056 * the flash is enabled.</p>
1057 * <p>Normally, this entry should be set to START for only a
1058 * single request, and the application should wait until the
1059 * sequence completes before starting a new one.</p>
1060 * <p>When a precapture metering sequence is finished, the camera device
1061 * may lock the auto-exposure routine internally to be able to accurately expose the
1062 * subsequent still capture image (<code>{@link CaptureRequest#CONTROL_CAPTURE_INTENT android.control.captureIntent} == STILL_CAPTURE</code>).
1063 * For this case, the AE may not resume normal scan if no subsequent still capture is
1064 * submitted. To ensure that the AE routine restarts normal scan, the application should
1065 * submit a request with <code>{@link CaptureRequest#CONTROL_AE_LOCK android.control.aeLock} == true</code>, followed by a request
1066 * with <code>{@link CaptureRequest#CONTROL_AE_LOCK android.control.aeLock} == false</code>, if the application decides not to submit a
1067 * still capture request after the precapture sequence completes. Alternatively, for
1068 * API level 23 or newer devices, the CANCEL can be used to unlock the camera device
1069 * internally locked AE if the application doesn't submit a still capture request after
1070 * the AE precapture trigger. Note that, the CANCEL was added in API level 23, and must not
1071 * be used in devices that have earlier API levels.</p>
1072 * <p>The exact effect of auto-exposure (AE) precapture trigger
1073 * depends on the current AE mode and state; see
1074 * {@link CaptureResult#CONTROL_AE_STATE android.control.aeState} for AE precapture state transition
1076 * <p>On LEGACY-level devices, the precapture trigger is not supported;
1077 * capturing a high-resolution JPEG image will automatically trigger a
1078 * precapture sequence before the high-resolution capture, including
1079 * potentially firing a pre-capture flash.</p>
1080 * <p>Using the precapture trigger and the auto-focus trigger {@link CaptureRequest#CONTROL_AF_TRIGGER android.control.afTrigger}
1081 * simultaneously is allowed. However, since these triggers often require cooperation between
1082 * the auto-focus and auto-exposure routines (for example, the may need to be enabled for a
1083 * focus sweep), the camera device may delay acting on a later trigger until the previous
1084 * trigger has been fully handled. This may lead to longer intervals between the trigger and
1085 * changes to {@link CaptureResult#CONTROL_AE_STATE android.control.aeState} indicating the start of the precapture sequence, for
1087 * <p>If both the precapture and the auto-focus trigger are activated on the same request, then
1088 * the camera device will complete them in the optimal order for that device.</p>
1089 * <p><b>Possible values:</b>
1091 * <li>{@link #CONTROL_AE_PRECAPTURE_TRIGGER_IDLE IDLE}</li>
1092 * <li>{@link #CONTROL_AE_PRECAPTURE_TRIGGER_START START}</li>
1093 * <li>{@link #CONTROL_AE_PRECAPTURE_TRIGGER_CANCEL CANCEL}</li>
1095 * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
1096 * <p><b>Limited capability</b> -
1097 * Present on all camera devices that report being at least {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED HARDWARE_LEVEL_LIMITED} devices in the
1098 * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
1100 * @see CaptureRequest#CONTROL_AE_LOCK
1101 * @see CaptureResult#CONTROL_AE_STATE
1102 * @see CaptureRequest#CONTROL_AF_TRIGGER
1103 * @see CaptureRequest#CONTROL_CAPTURE_INTENT
1104 * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
1105 * @see #CONTROL_AE_PRECAPTURE_TRIGGER_IDLE
1106 * @see #CONTROL_AE_PRECAPTURE_TRIGGER_START
1107 * @see #CONTROL_AE_PRECAPTURE_TRIGGER_CANCEL
1110 public static final Key<Integer> CONTROL_AE_PRECAPTURE_TRIGGER =
1111 new Key<Integer>("android.control.aePrecaptureTrigger", int.class);
1114 * <p>Whether auto-focus (AF) is currently enabled, and what
1115 * mode it is set to.</p>
1116 * <p>Only effective if {@link CaptureRequest#CONTROL_MODE android.control.mode} = AUTO and the lens is not fixed focus
1117 * (i.e. <code>{@link CameraCharacteristics#LENS_INFO_MINIMUM_FOCUS_DISTANCE android.lens.info.minimumFocusDistance} > 0</code>). Also note that
1118 * when {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode} is OFF, the behavior of AF is device
1119 * dependent. It is recommended to lock AF by using {@link CaptureRequest#CONTROL_AF_TRIGGER android.control.afTrigger} before
1120 * setting {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode} to OFF, or set AF mode to OFF when AE is OFF.</p>
1121 * <p>If the lens is controlled by the camera device auto-focus algorithm,
1122 * the camera device will report the current AF status in {@link CaptureResult#CONTROL_AF_STATE android.control.afState}
1123 * in result metadata.</p>
1124 * <p><b>Possible values:</b>
1126 * <li>{@link #CONTROL_AF_MODE_OFF OFF}</li>
1127 * <li>{@link #CONTROL_AF_MODE_AUTO AUTO}</li>
1128 * <li>{@link #CONTROL_AF_MODE_MACRO MACRO}</li>
1129 * <li>{@link #CONTROL_AF_MODE_CONTINUOUS_VIDEO CONTINUOUS_VIDEO}</li>
1130 * <li>{@link #CONTROL_AF_MODE_CONTINUOUS_PICTURE CONTINUOUS_PICTURE}</li>
1131 * <li>{@link #CONTROL_AF_MODE_EDOF EDOF}</li>
1133 * <p><b>Available values for this device:</b><br>
1134 * {@link CameraCharacteristics#CONTROL_AF_AVAILABLE_MODES android.control.afAvailableModes}</p>
1135 * <p>This key is available on all devices.</p>
1137 * @see CaptureRequest#CONTROL_AE_MODE
1138 * @see CameraCharacteristics#CONTROL_AF_AVAILABLE_MODES
1139 * @see CaptureResult#CONTROL_AF_STATE
1140 * @see CaptureRequest#CONTROL_AF_TRIGGER
1141 * @see CaptureRequest#CONTROL_MODE
1142 * @see CameraCharacteristics#LENS_INFO_MINIMUM_FOCUS_DISTANCE
1143 * @see #CONTROL_AF_MODE_OFF
1144 * @see #CONTROL_AF_MODE_AUTO
1145 * @see #CONTROL_AF_MODE_MACRO
1146 * @see #CONTROL_AF_MODE_CONTINUOUS_VIDEO
1147 * @see #CONTROL_AF_MODE_CONTINUOUS_PICTURE
1148 * @see #CONTROL_AF_MODE_EDOF
1151 public static final Key<Integer> CONTROL_AF_MODE =
1152 new Key<Integer>("android.control.afMode", int.class);
1155 * <p>List of metering areas to use for auto-focus.</p>
1156 * <p>Not available if {@link CameraCharacteristics#CONTROL_MAX_REGIONS_AF android.control.maxRegionsAf} is 0.
1157 * Otherwise will always be present.</p>
1158 * <p>The maximum number of focus areas supported by the device is determined by the value
1159 * of {@link CameraCharacteristics#CONTROL_MAX_REGIONS_AF android.control.maxRegionsAf}.</p>
1160 * <p>The coordinate system is based on the active pixel array,
1161 * with (0,0) being the top-left pixel in the active pixel array, and
1162 * ({@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}.width - 1,
1163 * {@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}.height - 1) being the
1164 * bottom-right pixel in the active pixel array.</p>
1165 * <p>The weight must be within <code>[0, 1000]</code>, and represents a weight
1166 * for every pixel in the area. This means that a large metering area
1167 * with the same weight as a smaller area will have more effect in
1168 * the metering result. Metering areas can partially overlap and the
1169 * camera device will add the weights in the overlap region.</p>
1170 * <p>The weights are relative to weights of other metering regions, so if only one region
1171 * is used, all non-zero weights will have the same effect. A region with 0 weight is
1173 * <p>If all regions have 0 weight, then no specific metering area needs to be used by the
1174 * camera device.</p>
1175 * <p>If the metering region is outside the used {@link CaptureRequest#SCALER_CROP_REGION android.scaler.cropRegion} returned in
1176 * capture result metadata, the camera device will ignore the sections outside the crop
1177 * region and output only the intersection rectangle as the metering region in the result
1178 * metadata. If the region is entirely outside the crop region, it will be ignored and
1179 * not reported in the result metadata.</p>
1180 * <p><b>Units</b>: Pixel coordinates within {@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}</p>
1181 * <p><b>Range of valid values:</b><br>
1182 * Coordinates must be between <code>[(0,0), (width, height))</code> of
1183 * {@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}</p>
1184 * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
1186 * @see CameraCharacteristics#CONTROL_MAX_REGIONS_AF
1187 * @see CaptureRequest#SCALER_CROP_REGION
1188 * @see CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE
1191 public static final Key<android.hardware.camera2.params.MeteringRectangle[]> CONTROL_AF_REGIONS =
1192 new Key<android.hardware.camera2.params.MeteringRectangle[]>("android.control.afRegions", android.hardware.camera2.params.MeteringRectangle[].class);
1195 * <p>Whether the camera device will trigger autofocus for this request.</p>
1196 * <p>This entry is normally set to IDLE, or is not
1197 * included at all in the request settings.</p>
1198 * <p>When included and set to START, the camera device will trigger the
1199 * autofocus algorithm. If autofocus is disabled, this trigger has no effect.</p>
1200 * <p>When set to CANCEL, the camera device will cancel any active trigger,
1201 * and return to its initial AF state.</p>
1202 * <p>Generally, applications should set this entry to START or CANCEL for only a
1203 * single capture, and then return it to IDLE (or not set at all). Specifying
1204 * START for multiple captures in a row means restarting the AF operation over
1205 * and over again.</p>
1206 * <p>See {@link CaptureResult#CONTROL_AF_STATE android.control.afState} for what the trigger means for each AF mode.</p>
1207 * <p>Using the autofocus trigger and the precapture trigger {@link CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER android.control.aePrecaptureTrigger}
1208 * simultaneously is allowed. However, since these triggers often require cooperation between
1209 * the auto-focus and auto-exposure routines (for example, the may need to be enabled for a
1210 * focus sweep), the camera device may delay acting on a later trigger until the previous
1211 * trigger has been fully handled. This may lead to longer intervals between the trigger and
1212 * changes to {@link CaptureResult#CONTROL_AF_STATE android.control.afState}, for example.</p>
1213 * <p><b>Possible values:</b>
1215 * <li>{@link #CONTROL_AF_TRIGGER_IDLE IDLE}</li>
1216 * <li>{@link #CONTROL_AF_TRIGGER_START START}</li>
1217 * <li>{@link #CONTROL_AF_TRIGGER_CANCEL CANCEL}</li>
1219 * <p>This key is available on all devices.</p>
1221 * @see CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
1222 * @see CaptureResult#CONTROL_AF_STATE
1223 * @see #CONTROL_AF_TRIGGER_IDLE
1224 * @see #CONTROL_AF_TRIGGER_START
1225 * @see #CONTROL_AF_TRIGGER_CANCEL
1228 public static final Key<Integer> CONTROL_AF_TRIGGER =
1229 new Key<Integer>("android.control.afTrigger", int.class);
1232 * <p>Whether auto-white balance (AWB) is currently locked to its
1233 * latest calculated values.</p>
1234 * <p>When set to <code>true</code> (ON), the AWB algorithm is locked to its latest parameters,
1235 * and will not change color balance settings until the lock is set to <code>false</code> (OFF).</p>
1236 * <p>Since the camera device has a pipeline of in-flight requests, the settings that
1237 * get locked do not necessarily correspond to the settings that were present in the
1238 * latest capture result received from the camera device, since additional captures
1239 * and AWB updates may have occurred even before the result was sent out. If an
1240 * application is switching between automatic and manual control and wishes to eliminate
1241 * any flicker during the switch, the following procedure is recommended:</p>
1243 * <li>Starting in auto-AWB mode:</li>
1245 * <li>Wait for the first result to be output that has the AWB locked</li>
1246 * <li>Copy AWB settings from that result into a request, set the request to manual AWB</li>
1247 * <li>Submit the capture request, proceed to run manual AWB as desired.</li>
1249 * <p>Note that AWB lock is only meaningful when
1250 * {@link CaptureRequest#CONTROL_AWB_MODE android.control.awbMode} is in the AUTO mode; in other modes,
1251 * AWB is already fixed to a specific setting.</p>
1252 * <p>Some LEGACY devices may not support ON; the value is then overridden to OFF.</p>
1253 * <p>This key is available on all devices.</p>
1255 * @see CaptureRequest#CONTROL_AWB_MODE
1258 public static final Key<Boolean> CONTROL_AWB_LOCK =
1259 new Key<Boolean>("android.control.awbLock", boolean.class);
1262 * <p>Whether auto-white balance (AWB) is currently setting the color
1263 * transform fields, and what its illumination target
1265 * <p>This control is only effective if {@link CaptureRequest#CONTROL_MODE android.control.mode} is AUTO.</p>
1266 * <p>When set to the ON mode, the camera device's auto-white balance
1267 * routine is enabled, overriding the application's selected
1268 * {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}, {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} and
1269 * {@link CaptureRequest#COLOR_CORRECTION_MODE android.colorCorrection.mode}. Note that when {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode}
1270 * is OFF, the behavior of AWB is device dependent. It is recommened to
1271 * also set AWB mode to OFF or lock AWB by using {@link CaptureRequest#CONTROL_AWB_LOCK android.control.awbLock} before
1272 * setting AE mode to OFF.</p>
1273 * <p>When set to the OFF mode, the camera device's auto-white balance
1274 * routine is disabled. The application manually controls the white
1275 * balance by {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}, {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains}
1276 * and {@link CaptureRequest#COLOR_CORRECTION_MODE android.colorCorrection.mode}.</p>
1277 * <p>When set to any other modes, the camera device's auto-white
1278 * balance routine is disabled. The camera device uses each
1279 * particular illumination target for white balance
1280 * adjustment. The application's values for
1281 * {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform},
1282 * {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} and
1283 * {@link CaptureRequest#COLOR_CORRECTION_MODE android.colorCorrection.mode} are ignored.</p>
1284 * <p><b>Possible values:</b>
1286 * <li>{@link #CONTROL_AWB_MODE_OFF OFF}</li>
1287 * <li>{@link #CONTROL_AWB_MODE_AUTO AUTO}</li>
1288 * <li>{@link #CONTROL_AWB_MODE_INCANDESCENT INCANDESCENT}</li>
1289 * <li>{@link #CONTROL_AWB_MODE_FLUORESCENT FLUORESCENT}</li>
1290 * <li>{@link #CONTROL_AWB_MODE_WARM_FLUORESCENT WARM_FLUORESCENT}</li>
1291 * <li>{@link #CONTROL_AWB_MODE_DAYLIGHT DAYLIGHT}</li>
1292 * <li>{@link #CONTROL_AWB_MODE_CLOUDY_DAYLIGHT CLOUDY_DAYLIGHT}</li>
1293 * <li>{@link #CONTROL_AWB_MODE_TWILIGHT TWILIGHT}</li>
1294 * <li>{@link #CONTROL_AWB_MODE_SHADE SHADE}</li>
1296 * <p><b>Available values for this device:</b><br>
1297 * {@link CameraCharacteristics#CONTROL_AWB_AVAILABLE_MODES android.control.awbAvailableModes}</p>
1298 * <p>This key is available on all devices.</p>
1300 * @see CaptureRequest#COLOR_CORRECTION_GAINS
1301 * @see CaptureRequest#COLOR_CORRECTION_MODE
1302 * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
1303 * @see CaptureRequest#CONTROL_AE_MODE
1304 * @see CameraCharacteristics#CONTROL_AWB_AVAILABLE_MODES
1305 * @see CaptureRequest#CONTROL_AWB_LOCK
1306 * @see CaptureRequest#CONTROL_MODE
1307 * @see #CONTROL_AWB_MODE_OFF
1308 * @see #CONTROL_AWB_MODE_AUTO
1309 * @see #CONTROL_AWB_MODE_INCANDESCENT
1310 * @see #CONTROL_AWB_MODE_FLUORESCENT
1311 * @see #CONTROL_AWB_MODE_WARM_FLUORESCENT
1312 * @see #CONTROL_AWB_MODE_DAYLIGHT
1313 * @see #CONTROL_AWB_MODE_CLOUDY_DAYLIGHT
1314 * @see #CONTROL_AWB_MODE_TWILIGHT
1315 * @see #CONTROL_AWB_MODE_SHADE
1318 public static final Key<Integer> CONTROL_AWB_MODE =
1319 new Key<Integer>("android.control.awbMode", int.class);
1322 * <p>List of metering areas to use for auto-white-balance illuminant
1324 * <p>Not available if {@link CameraCharacteristics#CONTROL_MAX_REGIONS_AWB android.control.maxRegionsAwb} is 0.
1325 * Otherwise will always be present.</p>
1326 * <p>The maximum number of regions supported by the device is determined by the value
1327 * of {@link CameraCharacteristics#CONTROL_MAX_REGIONS_AWB android.control.maxRegionsAwb}.</p>
1328 * <p>The coordinate system is based on the active pixel array,
1329 * with (0,0) being the top-left pixel in the active pixel array, and
1330 * ({@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}.width - 1,
1331 * {@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}.height - 1) being the
1332 * bottom-right pixel in the active pixel array.</p>
1333 * <p>The weight must range from 0 to 1000, and represents a weight
1334 * for every pixel in the area. This means that a large metering area
1335 * with the same weight as a smaller area will have more effect in
1336 * the metering result. Metering areas can partially overlap and the
1337 * camera device will add the weights in the overlap region.</p>
1338 * <p>The weights are relative to weights of other white balance metering regions, so if
1339 * only one region is used, all non-zero weights will have the same effect. A region with
1340 * 0 weight is ignored.</p>
1341 * <p>If all regions have 0 weight, then no specific metering area needs to be used by the
1342 * camera device.</p>
1343 * <p>If the metering region is outside the used {@link CaptureRequest#SCALER_CROP_REGION android.scaler.cropRegion} returned in
1344 * capture result metadata, the camera device will ignore the sections outside the crop
1345 * region and output only the intersection rectangle as the metering region in the result
1346 * metadata. If the region is entirely outside the crop region, it will be ignored and
1347 * not reported in the result metadata.</p>
1348 * <p><b>Units</b>: Pixel coordinates within {@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}</p>
1349 * <p><b>Range of valid values:</b><br>
1350 * Coordinates must be between <code>[(0,0), (width, height))</code> of
1351 * {@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}</p>
1352 * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
1354 * @see CameraCharacteristics#CONTROL_MAX_REGIONS_AWB
1355 * @see CaptureRequest#SCALER_CROP_REGION
1356 * @see CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE
1359 public static final Key<android.hardware.camera2.params.MeteringRectangle[]> CONTROL_AWB_REGIONS =
1360 new Key<android.hardware.camera2.params.MeteringRectangle[]>("android.control.awbRegions", android.hardware.camera2.params.MeteringRectangle[].class);
1363 * <p>Information to the camera device 3A (auto-exposure,
1364 * auto-focus, auto-white balance) routines about the purpose
1365 * of this capture, to help the camera device to decide optimal 3A
1367 * <p>This control (except for MANUAL) is only effective if
1368 * <code>{@link CaptureRequest#CONTROL_MODE android.control.mode} != OFF</code> and any 3A routine is active.</p>
1369 * <p>ZERO_SHUTTER_LAG will be supported if {@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES android.request.availableCapabilities}
1370 * contains PRIVATE_REPROCESSING or YUV_REPROCESSING. MANUAL will be supported if
1371 * {@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES android.request.availableCapabilities} contains MANUAL_SENSOR. Other intent values are
1372 * always supported.</p>
1373 * <p><b>Possible values:</b>
1375 * <li>{@link #CONTROL_CAPTURE_INTENT_CUSTOM CUSTOM}</li>
1376 * <li>{@link #CONTROL_CAPTURE_INTENT_PREVIEW PREVIEW}</li>
1377 * <li>{@link #CONTROL_CAPTURE_INTENT_STILL_CAPTURE STILL_CAPTURE}</li>
1378 * <li>{@link #CONTROL_CAPTURE_INTENT_VIDEO_RECORD VIDEO_RECORD}</li>
1379 * <li>{@link #CONTROL_CAPTURE_INTENT_VIDEO_SNAPSHOT VIDEO_SNAPSHOT}</li>
1380 * <li>{@link #CONTROL_CAPTURE_INTENT_ZERO_SHUTTER_LAG ZERO_SHUTTER_LAG}</li>
1381 * <li>{@link #CONTROL_CAPTURE_INTENT_MANUAL MANUAL}</li>
1383 * <p>This key is available on all devices.</p>
1385 * @see CaptureRequest#CONTROL_MODE
1386 * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
1387 * @see #CONTROL_CAPTURE_INTENT_CUSTOM
1388 * @see #CONTROL_CAPTURE_INTENT_PREVIEW
1389 * @see #CONTROL_CAPTURE_INTENT_STILL_CAPTURE
1390 * @see #CONTROL_CAPTURE_INTENT_VIDEO_RECORD
1391 * @see #CONTROL_CAPTURE_INTENT_VIDEO_SNAPSHOT
1392 * @see #CONTROL_CAPTURE_INTENT_ZERO_SHUTTER_LAG
1393 * @see #CONTROL_CAPTURE_INTENT_MANUAL
1396 public static final Key<Integer> CONTROL_CAPTURE_INTENT =
1397 new Key<Integer>("android.control.captureIntent", int.class);
1400 * <p>A special color effect to apply.</p>
1401 * <p>When this mode is set, a color effect will be applied
1402 * to images produced by the camera device. The interpretation
1403 * and implementation of these color effects is left to the
1404 * implementor of the camera device, and should not be
1405 * depended on to be consistent (or present) across all
1407 * <p><b>Possible values:</b>
1409 * <li>{@link #CONTROL_EFFECT_MODE_OFF OFF}</li>
1410 * <li>{@link #CONTROL_EFFECT_MODE_MONO MONO}</li>
1411 * <li>{@link #CONTROL_EFFECT_MODE_NEGATIVE NEGATIVE}</li>
1412 * <li>{@link #CONTROL_EFFECT_MODE_SOLARIZE SOLARIZE}</li>
1413 * <li>{@link #CONTROL_EFFECT_MODE_SEPIA SEPIA}</li>
1414 * <li>{@link #CONTROL_EFFECT_MODE_POSTERIZE POSTERIZE}</li>
1415 * <li>{@link #CONTROL_EFFECT_MODE_WHITEBOARD WHITEBOARD}</li>
1416 * <li>{@link #CONTROL_EFFECT_MODE_BLACKBOARD BLACKBOARD}</li>
1417 * <li>{@link #CONTROL_EFFECT_MODE_AQUA AQUA}</li>
1419 * <p><b>Available values for this device:</b><br>
1420 * {@link CameraCharacteristics#CONTROL_AVAILABLE_EFFECTS android.control.availableEffects}</p>
1421 * <p>This key is available on all devices.</p>
1423 * @see CameraCharacteristics#CONTROL_AVAILABLE_EFFECTS
1424 * @see #CONTROL_EFFECT_MODE_OFF
1425 * @see #CONTROL_EFFECT_MODE_MONO
1426 * @see #CONTROL_EFFECT_MODE_NEGATIVE
1427 * @see #CONTROL_EFFECT_MODE_SOLARIZE
1428 * @see #CONTROL_EFFECT_MODE_SEPIA
1429 * @see #CONTROL_EFFECT_MODE_POSTERIZE
1430 * @see #CONTROL_EFFECT_MODE_WHITEBOARD
1431 * @see #CONTROL_EFFECT_MODE_BLACKBOARD
1432 * @see #CONTROL_EFFECT_MODE_AQUA
1435 public static final Key<Integer> CONTROL_EFFECT_MODE =
1436 new Key<Integer>("android.control.effectMode", int.class);
1439 * <p>Overall mode of 3A (auto-exposure, auto-white-balance, auto-focus) control
1441 * <p>This is a top-level 3A control switch. When set to OFF, all 3A control
1442 * by the camera device is disabled. The application must set the fields for
1443 * capture parameters itself.</p>
1444 * <p>When set to AUTO, the individual algorithm controls in
1445 * android.control.* are in effect, such as {@link CaptureRequest#CONTROL_AF_MODE android.control.afMode}.</p>
1446 * <p>When set to USE_SCENE_MODE, the individual controls in
1447 * android.control.* are mostly disabled, and the camera device implements
1448 * one of the scene mode settings (such as ACTION, SUNSET, or PARTY)
1449 * as it wishes. The camera device scene mode 3A settings are provided by
1450 * {@link android.hardware.camera2.CaptureResult capture results}.</p>
1451 * <p>When set to OFF_KEEP_STATE, it is similar to OFF mode, the only difference
1452 * is that this frame will not be used by camera device background 3A statistics
1453 * update, as if this frame is never captured. This mode can be used in the scenario
1454 * where the application doesn't want a 3A manual control capture to affect
1455 * the subsequent auto 3A capture results.</p>
1456 * <p><b>Possible values:</b>
1458 * <li>{@link #CONTROL_MODE_OFF OFF}</li>
1459 * <li>{@link #CONTROL_MODE_AUTO AUTO}</li>
1460 * <li>{@link #CONTROL_MODE_USE_SCENE_MODE USE_SCENE_MODE}</li>
1461 * <li>{@link #CONTROL_MODE_OFF_KEEP_STATE OFF_KEEP_STATE}</li>
1463 * <p><b>Available values for this device:</b><br>
1464 * {@link CameraCharacteristics#CONTROL_AVAILABLE_MODES android.control.availableModes}</p>
1465 * <p>This key is available on all devices.</p>
1467 * @see CaptureRequest#CONTROL_AF_MODE
1468 * @see CameraCharacteristics#CONTROL_AVAILABLE_MODES
1469 * @see #CONTROL_MODE_OFF
1470 * @see #CONTROL_MODE_AUTO
1471 * @see #CONTROL_MODE_USE_SCENE_MODE
1472 * @see #CONTROL_MODE_OFF_KEEP_STATE
1475 public static final Key<Integer> CONTROL_MODE =
1476 new Key<Integer>("android.control.mode", int.class);
1479 * <p>Control for which scene mode is currently active.</p>
1480 * <p>Scene modes are custom camera modes optimized for a certain set of conditions and
1481 * capture settings.</p>
1482 * <p>This is the mode that that is active when
1483 * <code>{@link CaptureRequest#CONTROL_MODE android.control.mode} == USE_SCENE_MODE</code>. Aside from FACE_PRIORITY, these modes will
1484 * disable {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode}, {@link CaptureRequest#CONTROL_AWB_MODE android.control.awbMode}, and {@link CaptureRequest#CONTROL_AF_MODE android.control.afMode}
1486 * <p>The interpretation and implementation of these scene modes is left
1487 * to the implementor of the camera device. Their behavior will not be
1488 * consistent across all devices, and any given device may only implement
1489 * a subset of these modes.</p>
1490 * <p><b>Possible values:</b>
1492 * <li>{@link #CONTROL_SCENE_MODE_DISABLED DISABLED}</li>
1493 * <li>{@link #CONTROL_SCENE_MODE_FACE_PRIORITY FACE_PRIORITY}</li>
1494 * <li>{@link #CONTROL_SCENE_MODE_ACTION ACTION}</li>
1495 * <li>{@link #CONTROL_SCENE_MODE_PORTRAIT PORTRAIT}</li>
1496 * <li>{@link #CONTROL_SCENE_MODE_LANDSCAPE LANDSCAPE}</li>
1497 * <li>{@link #CONTROL_SCENE_MODE_NIGHT NIGHT}</li>
1498 * <li>{@link #CONTROL_SCENE_MODE_NIGHT_PORTRAIT NIGHT_PORTRAIT}</li>
1499 * <li>{@link #CONTROL_SCENE_MODE_THEATRE THEATRE}</li>
1500 * <li>{@link #CONTROL_SCENE_MODE_BEACH BEACH}</li>
1501 * <li>{@link #CONTROL_SCENE_MODE_SNOW SNOW}</li>
1502 * <li>{@link #CONTROL_SCENE_MODE_SUNSET SUNSET}</li>
1503 * <li>{@link #CONTROL_SCENE_MODE_STEADYPHOTO STEADYPHOTO}</li>
1504 * <li>{@link #CONTROL_SCENE_MODE_FIREWORKS FIREWORKS}</li>
1505 * <li>{@link #CONTROL_SCENE_MODE_SPORTS SPORTS}</li>
1506 * <li>{@link #CONTROL_SCENE_MODE_PARTY PARTY}</li>
1507 * <li>{@link #CONTROL_SCENE_MODE_CANDLELIGHT CANDLELIGHT}</li>
1508 * <li>{@link #CONTROL_SCENE_MODE_BARCODE BARCODE}</li>
1509 * <li>{@link #CONTROL_SCENE_MODE_HIGH_SPEED_VIDEO HIGH_SPEED_VIDEO}</li>
1510 * <li>{@link #CONTROL_SCENE_MODE_HDR HDR}</li>
1512 * <p><b>Available values for this device:</b><br>
1513 * {@link CameraCharacteristics#CONTROL_AVAILABLE_SCENE_MODES android.control.availableSceneModes}</p>
1514 * <p>This key is available on all devices.</p>
1516 * @see CaptureRequest#CONTROL_AE_MODE
1517 * @see CaptureRequest#CONTROL_AF_MODE
1518 * @see CameraCharacteristics#CONTROL_AVAILABLE_SCENE_MODES
1519 * @see CaptureRequest#CONTROL_AWB_MODE
1520 * @see CaptureRequest#CONTROL_MODE
1521 * @see #CONTROL_SCENE_MODE_DISABLED
1522 * @see #CONTROL_SCENE_MODE_FACE_PRIORITY
1523 * @see #CONTROL_SCENE_MODE_ACTION
1524 * @see #CONTROL_SCENE_MODE_PORTRAIT
1525 * @see #CONTROL_SCENE_MODE_LANDSCAPE
1526 * @see #CONTROL_SCENE_MODE_NIGHT
1527 * @see #CONTROL_SCENE_MODE_NIGHT_PORTRAIT
1528 * @see #CONTROL_SCENE_MODE_THEATRE
1529 * @see #CONTROL_SCENE_MODE_BEACH
1530 * @see #CONTROL_SCENE_MODE_SNOW
1531 * @see #CONTROL_SCENE_MODE_SUNSET
1532 * @see #CONTROL_SCENE_MODE_STEADYPHOTO
1533 * @see #CONTROL_SCENE_MODE_FIREWORKS
1534 * @see #CONTROL_SCENE_MODE_SPORTS
1535 * @see #CONTROL_SCENE_MODE_PARTY
1536 * @see #CONTROL_SCENE_MODE_CANDLELIGHT
1537 * @see #CONTROL_SCENE_MODE_BARCODE
1538 * @see #CONTROL_SCENE_MODE_HIGH_SPEED_VIDEO
1539 * @see #CONTROL_SCENE_MODE_HDR
1542 public static final Key<Integer> CONTROL_SCENE_MODE =
1543 new Key<Integer>("android.control.sceneMode", int.class);
1546 * <p>Whether video stabilization is
1548 * <p>Video stabilization automatically translates and scales images from
1549 * the camera in order to stabilize motion between consecutive frames.</p>
1550 * <p>If enabled, video stabilization can modify the
1551 * {@link CaptureRequest#SCALER_CROP_REGION android.scaler.cropRegion} to keep the video stream stabilized.</p>
1552 * <p>Switching between different video stabilization modes may take several
1553 * frames to initialize, the camera device will report the current mode
1554 * in capture result metadata. For example, When "ON" mode is requested,
1555 * the video stabilization modes in the first several capture results may
1556 * still be "OFF", and it will become "ON" when the initialization is
1558 * <p>If a camera device supports both this mode and OIS
1559 * ({@link CaptureRequest#LENS_OPTICAL_STABILIZATION_MODE android.lens.opticalStabilizationMode}), turning both modes on may
1560 * produce undesirable interaction, so it is recommended not to enable
1561 * both at the same time.</p>
1562 * <p><b>Possible values:</b>
1564 * <li>{@link #CONTROL_VIDEO_STABILIZATION_MODE_OFF OFF}</li>
1565 * <li>{@link #CONTROL_VIDEO_STABILIZATION_MODE_ON ON}</li>
1567 * <p>This key is available on all devices.</p>
1569 * @see CaptureRequest#LENS_OPTICAL_STABILIZATION_MODE
1570 * @see CaptureRequest#SCALER_CROP_REGION
1571 * @see #CONTROL_VIDEO_STABILIZATION_MODE_OFF
1572 * @see #CONTROL_VIDEO_STABILIZATION_MODE_ON
1575 public static final Key<Integer> CONTROL_VIDEO_STABILIZATION_MODE =
1576 new Key<Integer>("android.control.videoStabilizationMode", int.class);
1579 * <p>Operation mode for edge
1581 * <p>Edge enhancement improves sharpness and details in the captured image. OFF means
1582 * no enhancement will be applied by the camera device.</p>
1583 * <p>FAST/HIGH_QUALITY both mean camera device determined enhancement
1584 * will be applied. HIGH_QUALITY mode indicates that the
1585 * camera device will use the highest-quality enhancement algorithms,
1586 * even if it slows down capture rate. FAST means the camera device will
1587 * not slow down capture rate when applying edge enhancement. FAST may be the same as OFF if
1588 * edge enhancement will slow down capture rate. Every output stream will have a similar
1589 * amount of enhancement applied.</p>
1590 * <p>ZERO_SHUTTER_LAG is meant to be used by applications that maintain a continuous circular
1591 * buffer of high-resolution images during preview and reprocess image(s) from that buffer
1592 * into a final capture when triggered by the user. In this mode, the camera device applies
1593 * edge enhancement to low-resolution streams (below maximum recording resolution) to
1594 * maximize preview quality, but does not apply edge enhancement to high-resolution streams,
1595 * since those will be reprocessed later if necessary.</p>
1596 * <p>For YUV_REPROCESSING, these FAST/HIGH_QUALITY modes both mean that the camera
1597 * device will apply FAST/HIGH_QUALITY YUV-domain edge enhancement, respectively.
1598 * The camera device may adjust its internal edge enhancement parameters for best
1599 * image quality based on the {@link CaptureRequest#REPROCESS_EFFECTIVE_EXPOSURE_FACTOR android.reprocess.effectiveExposureFactor}, if it is set.</p>
1600 * <p><b>Possible values:</b>
1602 * <li>{@link #EDGE_MODE_OFF OFF}</li>
1603 * <li>{@link #EDGE_MODE_FAST FAST}</li>
1604 * <li>{@link #EDGE_MODE_HIGH_QUALITY HIGH_QUALITY}</li>
1605 * <li>{@link #EDGE_MODE_ZERO_SHUTTER_LAG ZERO_SHUTTER_LAG}</li>
1607 * <p><b>Available values for this device:</b><br>
1608 * {@link CameraCharacteristics#EDGE_AVAILABLE_EDGE_MODES android.edge.availableEdgeModes}</p>
1609 * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
1610 * <p><b>Full capability</b> -
1611 * Present on all camera devices that report being {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_FULL HARDWARE_LEVEL_FULL} devices in the
1612 * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
1614 * @see CameraCharacteristics#EDGE_AVAILABLE_EDGE_MODES
1615 * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
1616 * @see CaptureRequest#REPROCESS_EFFECTIVE_EXPOSURE_FACTOR
1617 * @see #EDGE_MODE_OFF
1618 * @see #EDGE_MODE_FAST
1619 * @see #EDGE_MODE_HIGH_QUALITY
1620 * @see #EDGE_MODE_ZERO_SHUTTER_LAG
1623 public static final Key<Integer> EDGE_MODE =
1624 new Key<Integer>("android.edge.mode", int.class);
1627 * <p>The desired mode for for the camera device's flash control.</p>
1628 * <p>This control is only effective when flash unit is available
1629 * (<code>{@link CameraCharacteristics#FLASH_INFO_AVAILABLE android.flash.info.available} == true</code>).</p>
1630 * <p>When this control is used, the {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode} must be set to ON or OFF.
1631 * Otherwise, the camera device auto-exposure related flash control (ON_AUTO_FLASH,
1632 * ON_ALWAYS_FLASH, or ON_AUTO_FLASH_REDEYE) will override this control.</p>
1633 * <p>When set to OFF, the camera device will not fire flash for this capture.</p>
1634 * <p>When set to SINGLE, the camera device will fire flash regardless of the camera
1635 * device's auto-exposure routine's result. When used in still capture case, this
1636 * control should be used along with auto-exposure (AE) precapture metering sequence
1637 * ({@link CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER android.control.aePrecaptureTrigger}), otherwise, the image may be incorrectly exposed.</p>
1638 * <p>When set to TORCH, the flash will be on continuously. This mode can be used
1639 * for use cases such as preview, auto-focus assist, still capture, or video recording.</p>
1640 * <p>The flash status will be reported by {@link CaptureResult#FLASH_STATE android.flash.state} in the capture result metadata.</p>
1641 * <p><b>Possible values:</b>
1643 * <li>{@link #FLASH_MODE_OFF OFF}</li>
1644 * <li>{@link #FLASH_MODE_SINGLE SINGLE}</li>
1645 * <li>{@link #FLASH_MODE_TORCH TORCH}</li>
1647 * <p>This key is available on all devices.</p>
1649 * @see CaptureRequest#CONTROL_AE_MODE
1650 * @see CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
1651 * @see CameraCharacteristics#FLASH_INFO_AVAILABLE
1652 * @see CaptureResult#FLASH_STATE
1653 * @see #FLASH_MODE_OFF
1654 * @see #FLASH_MODE_SINGLE
1655 * @see #FLASH_MODE_TORCH
1658 public static final Key<Integer> FLASH_MODE =
1659 new Key<Integer>("android.flash.mode", int.class);
1662 * <p>Operational mode for hot pixel correction.</p>
1663 * <p>Hotpixel correction interpolates out, or otherwise removes, pixels
1664 * that do not accurately measure the incoming light (i.e. pixels that
1665 * are stuck at an arbitrary value or are oversensitive).</p>
1666 * <p><b>Possible values:</b>
1668 * <li>{@link #HOT_PIXEL_MODE_OFF OFF}</li>
1669 * <li>{@link #HOT_PIXEL_MODE_FAST FAST}</li>
1670 * <li>{@link #HOT_PIXEL_MODE_HIGH_QUALITY HIGH_QUALITY}</li>
1672 * <p><b>Available values for this device:</b><br>
1673 * {@link CameraCharacteristics#HOT_PIXEL_AVAILABLE_HOT_PIXEL_MODES android.hotPixel.availableHotPixelModes}</p>
1674 * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
1676 * @see CameraCharacteristics#HOT_PIXEL_AVAILABLE_HOT_PIXEL_MODES
1677 * @see #HOT_PIXEL_MODE_OFF
1678 * @see #HOT_PIXEL_MODE_FAST
1679 * @see #HOT_PIXEL_MODE_HIGH_QUALITY
1682 public static final Key<Integer> HOT_PIXEL_MODE =
1683 new Key<Integer>("android.hotPixel.mode", int.class);
1686 * <p>A location object to use when generating image GPS metadata.</p>
1687 * <p>Setting a location object in a request will include the GPS coordinates of the location
1688 * into any JPEG images captured based on the request. These coordinates can then be
1689 * viewed by anyone who receives the JPEG image.</p>
1690 * <p>This key is available on all devices.</p>
1694 public static final Key<android.location.Location> JPEG_GPS_LOCATION =
1695 new Key<android.location.Location>("android.jpeg.gpsLocation", android.location.Location.class);
1698 * <p>GPS coordinates to include in output JPEG
1700 * <p><b>Range of valid values:</b><br>
1701 * (-180 - 180], [-90,90], [-inf, inf]</p>
1702 * <p>This key is available on all devices.</p>
1705 public static final Key<double[]> JPEG_GPS_COORDINATES =
1706 new Key<double[]>("android.jpeg.gpsCoordinates", double[].class);
1709 * <p>32 characters describing GPS algorithm to
1710 * include in EXIF.</p>
1711 * <p><b>Units</b>: UTF-8 null-terminated string</p>
1712 * <p>This key is available on all devices.</p>
1715 public static final Key<String> JPEG_GPS_PROCESSING_METHOD =
1716 new Key<String>("android.jpeg.gpsProcessingMethod", String.class);
1719 * <p>Time GPS fix was made to include in
1721 * <p><b>Units</b>: UTC in seconds since January 1, 1970</p>
1722 * <p>This key is available on all devices.</p>
1725 public static final Key<Long> JPEG_GPS_TIMESTAMP =
1726 new Key<Long>("android.jpeg.gpsTimestamp", long.class);
1729 * <p>The orientation for a JPEG image.</p>
1730 * <p>The clockwise rotation angle in degrees, relative to the orientation
1731 * to the camera, that the JPEG picture needs to be rotated by, to be viewed
1733 * <p>Camera devices may either encode this value into the JPEG EXIF header, or
1734 * rotate the image data to match this orientation. When the image data is rotated,
1735 * the thumbnail data will also be rotated.</p>
1736 * <p>Note that this orientation is relative to the orientation of the camera sensor, given
1737 * by {@link CameraCharacteristics#SENSOR_ORIENTATION android.sensor.orientation}.</p>
1738 * <p>To translate from the device orientation given by the Android sensor APIs, the following
1739 * sample code may be used:</p>
1740 * <pre><code>private int getJpegOrientation(CameraCharacteristics c, int deviceOrientation) {
1741 * if (deviceOrientation == android.view.OrientationEventListener.ORIENTATION_UNKNOWN) return 0;
1742 * int sensorOrientation = c.get(CameraCharacteristics.SENSOR_ORIENTATION);
1744 * // Round device orientation to a multiple of 90
1745 * deviceOrientation = (deviceOrientation + 45) / 90 * 90;
1747 * // Reverse device orientation for front-facing cameras
1748 * boolean facingFront = c.get(CameraCharacteristics.LENS_FACING) == CameraCharacteristics.LENS_FACING_FRONT;
1749 * if (facingFront) deviceOrientation = -deviceOrientation;
1751 * // Calculate desired JPEG orientation relative to camera orientation to make
1752 * // the image upright relative to the device orientation
1753 * int jpegOrientation = (sensorOrientation + deviceOrientation + 360) % 360;
1755 * return jpegOrientation;
1758 * <p><b>Units</b>: Degrees in multiples of 90</p>
1759 * <p><b>Range of valid values:</b><br>
1760 * 0, 90, 180, 270</p>
1761 * <p>This key is available on all devices.</p>
1763 * @see CameraCharacteristics#SENSOR_ORIENTATION
1766 public static final Key<Integer> JPEG_ORIENTATION =
1767 new Key<Integer>("android.jpeg.orientation", int.class);
1770 * <p>Compression quality of the final JPEG
1772 * <p>85-95 is typical usage range.</p>
1773 * <p><b>Range of valid values:</b><br>
1774 * 1-100; larger is higher quality</p>
1775 * <p>This key is available on all devices.</p>
1778 public static final Key<Byte> JPEG_QUALITY =
1779 new Key<Byte>("android.jpeg.quality", byte.class);
1782 * <p>Compression quality of JPEG
1784 * <p><b>Range of valid values:</b><br>
1785 * 1-100; larger is higher quality</p>
1786 * <p>This key is available on all devices.</p>
1789 public static final Key<Byte> JPEG_THUMBNAIL_QUALITY =
1790 new Key<Byte>("android.jpeg.thumbnailQuality", byte.class);
1793 * <p>Resolution of embedded JPEG thumbnail.</p>
1794 * <p>When set to (0, 0) value, the JPEG EXIF will not contain thumbnail,
1795 * but the captured JPEG will still be a valid image.</p>
1796 * <p>For best results, when issuing a request for a JPEG image, the thumbnail size selected
1797 * should have the same aspect ratio as the main JPEG output.</p>
1798 * <p>If the thumbnail image aspect ratio differs from the JPEG primary image aspect
1799 * ratio, the camera device creates the thumbnail by cropping it from the primary image.
1800 * For example, if the primary image has 4:3 aspect ratio, the thumbnail image has
1801 * 16:9 aspect ratio, the primary image will be cropped vertically (letterbox) to
1802 * generate the thumbnail image. The thumbnail image will always have a smaller Field
1803 * Of View (FOV) than the primary image when aspect ratios differ.</p>
1804 * <p>When an {@link CaptureRequest#JPEG_ORIENTATION android.jpeg.orientation} of non-zero degree is requested,
1805 * the camera device will handle thumbnail rotation in one of the following ways:</p>
1807 * <li>Set the {@link android.media.ExifInterface#TAG_ORIENTATION EXIF orientation flag}
1808 * and keep jpeg and thumbnail image data unrotated.</li>
1809 * <li>Rotate the jpeg and thumbnail image data and not set
1810 * {@link android.media.ExifInterface#TAG_ORIENTATION EXIF orientation flag}. In this
1811 * case, LIMITED or FULL hardware level devices will report rotated thumnail size in
1812 * capture result, so the width and height will be interchanged if 90 or 270 degree
1813 * orientation is requested. LEGACY device will always report unrotated thumbnail
1816 * <p><b>Range of valid values:</b><br>
1817 * {@link CameraCharacteristics#JPEG_AVAILABLE_THUMBNAIL_SIZES android.jpeg.availableThumbnailSizes}</p>
1818 * <p>This key is available on all devices.</p>
1820 * @see CameraCharacteristics#JPEG_AVAILABLE_THUMBNAIL_SIZES
1821 * @see CaptureRequest#JPEG_ORIENTATION
1824 public static final Key<android.util.Size> JPEG_THUMBNAIL_SIZE =
1825 new Key<android.util.Size>("android.jpeg.thumbnailSize", android.util.Size.class);
1828 * <p>The desired lens aperture size, as a ratio of lens focal length to the
1829 * effective aperture diameter.</p>
1830 * <p>Setting this value is only supported on the camera devices that have a variable
1831 * aperture lens.</p>
1832 * <p>When this is supported and {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode} is OFF,
1833 * this can be set along with {@link CaptureRequest#SENSOR_EXPOSURE_TIME android.sensor.exposureTime},
1834 * {@link CaptureRequest#SENSOR_SENSITIVITY android.sensor.sensitivity}, and {@link CaptureRequest#SENSOR_FRAME_DURATION android.sensor.frameDuration}
1835 * to achieve manual exposure control.</p>
1836 * <p>The requested aperture value may take several frames to reach the
1837 * requested value; the camera device will report the current (intermediate)
1838 * aperture size in capture result metadata while the aperture is changing.
1839 * While the aperture is still changing, {@link CaptureResult#LENS_STATE android.lens.state} will be set to MOVING.</p>
1840 * <p>When this is supported and {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode} is one of
1841 * the ON modes, this will be overridden by the camera device
1842 * auto-exposure algorithm, the overridden values are then provided
1843 * back to the user in the corresponding result.</p>
1844 * <p><b>Units</b>: The f-number (f/N)</p>
1845 * <p><b>Range of valid values:</b><br>
1846 * {@link CameraCharacteristics#LENS_INFO_AVAILABLE_APERTURES android.lens.info.availableApertures}</p>
1847 * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
1848 * <p><b>Full capability</b> -
1849 * Present on all camera devices that report being {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_FULL HARDWARE_LEVEL_FULL} devices in the
1850 * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
1852 * @see CaptureRequest#CONTROL_AE_MODE
1853 * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
1854 * @see CameraCharacteristics#LENS_INFO_AVAILABLE_APERTURES
1855 * @see CaptureResult#LENS_STATE
1856 * @see CaptureRequest#SENSOR_EXPOSURE_TIME
1857 * @see CaptureRequest#SENSOR_FRAME_DURATION
1858 * @see CaptureRequest#SENSOR_SENSITIVITY
1861 public static final Key<Float> LENS_APERTURE =
1862 new Key<Float>("android.lens.aperture", float.class);
1865 * <p>The desired setting for the lens neutral density filter(s).</p>
1866 * <p>This control will not be supported on most camera devices.</p>
1867 * <p>Lens filters are typically used to lower the amount of light the
1868 * sensor is exposed to (measured in steps of EV). As used here, an EV
1869 * step is the standard logarithmic representation, which are
1870 * non-negative, and inversely proportional to the amount of light
1871 * hitting the sensor. For example, setting this to 0 would result
1872 * in no reduction of the incoming light, and setting this to 2 would
1873 * mean that the filter is set to reduce incoming light by two stops
1874 * (allowing 1/4 of the prior amount of light to the sensor).</p>
1875 * <p>It may take several frames before the lens filter density changes
1876 * to the requested value. While the filter density is still changing,
1877 * {@link CaptureResult#LENS_STATE android.lens.state} will be set to MOVING.</p>
1878 * <p><b>Units</b>: Exposure Value (EV)</p>
1879 * <p><b>Range of valid values:</b><br>
1880 * {@link CameraCharacteristics#LENS_INFO_AVAILABLE_FILTER_DENSITIES android.lens.info.availableFilterDensities}</p>
1881 * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
1882 * <p><b>Full capability</b> -
1883 * Present on all camera devices that report being {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_FULL HARDWARE_LEVEL_FULL} devices in the
1884 * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
1886 * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
1887 * @see CameraCharacteristics#LENS_INFO_AVAILABLE_FILTER_DENSITIES
1888 * @see CaptureResult#LENS_STATE
1891 public static final Key<Float> LENS_FILTER_DENSITY =
1892 new Key<Float>("android.lens.filterDensity", float.class);
1895 * <p>The desired lens focal length; used for optical zoom.</p>
1896 * <p>This setting controls the physical focal length of the camera
1897 * device's lens. Changing the focal length changes the field of
1898 * view of the camera device, and is usually used for optical zoom.</p>
1899 * <p>Like {@link CaptureRequest#LENS_FOCUS_DISTANCE android.lens.focusDistance} and {@link CaptureRequest#LENS_APERTURE android.lens.aperture}, this
1900 * setting won't be applied instantaneously, and it may take several
1901 * frames before the lens can change to the requested focal length.
1902 * While the focal length is still changing, {@link CaptureResult#LENS_STATE android.lens.state} will
1903 * be set to MOVING.</p>
1904 * <p>Optical zoom will not be supported on most devices.</p>
1905 * <p><b>Units</b>: Millimeters</p>
1906 * <p><b>Range of valid values:</b><br>
1907 * {@link CameraCharacteristics#LENS_INFO_AVAILABLE_FOCAL_LENGTHS android.lens.info.availableFocalLengths}</p>
1908 * <p>This key is available on all devices.</p>
1910 * @see CaptureRequest#LENS_APERTURE
1911 * @see CaptureRequest#LENS_FOCUS_DISTANCE
1912 * @see CameraCharacteristics#LENS_INFO_AVAILABLE_FOCAL_LENGTHS
1913 * @see CaptureResult#LENS_STATE
1916 public static final Key<Float> LENS_FOCAL_LENGTH =
1917 new Key<Float>("android.lens.focalLength", float.class);
1920 * <p>Desired distance to plane of sharpest focus,
1921 * measured from frontmost surface of the lens.</p>
1922 * <p>This control can be used for setting manual focus, on devices that support
1923 * the MANUAL_SENSOR capability and have a variable-focus lens (see
1924 * {@link CameraCharacteristics#LENS_INFO_MINIMUM_FOCUS_DISTANCE android.lens.info.minimumFocusDistance}).</p>
1925 * <p>A value of <code>0.0f</code> means infinity focus. The value set will be clamped to
1926 * <code>[0.0f, {@link CameraCharacteristics#LENS_INFO_MINIMUM_FOCUS_DISTANCE android.lens.info.minimumFocusDistance}]</code>.</p>
1927 * <p>Like {@link CaptureRequest#LENS_FOCAL_LENGTH android.lens.focalLength}, this setting won't be applied
1928 * instantaneously, and it may take several frames before the lens
1929 * can move to the requested focus distance. While the lens is still moving,
1930 * {@link CaptureResult#LENS_STATE android.lens.state} will be set to MOVING.</p>
1931 * <p>LEGACY devices support at most setting this to <code>0.0f</code>
1932 * for infinity focus.</p>
1933 * <p><b>Units</b>: See {@link CameraCharacteristics#LENS_INFO_FOCUS_DISTANCE_CALIBRATION android.lens.info.focusDistanceCalibration} for details</p>
1934 * <p><b>Range of valid values:</b><br>
1936 * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
1937 * <p><b>Full capability</b> -
1938 * Present on all camera devices that report being {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_FULL HARDWARE_LEVEL_FULL} devices in the
1939 * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
1941 * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
1942 * @see CaptureRequest#LENS_FOCAL_LENGTH
1943 * @see CameraCharacteristics#LENS_INFO_FOCUS_DISTANCE_CALIBRATION
1944 * @see CameraCharacteristics#LENS_INFO_MINIMUM_FOCUS_DISTANCE
1945 * @see CaptureResult#LENS_STATE
1948 public static final Key<Float> LENS_FOCUS_DISTANCE =
1949 new Key<Float>("android.lens.focusDistance", float.class);
1952 * <p>Sets whether the camera device uses optical image stabilization (OIS)
1953 * when capturing images.</p>
1954 * <p>OIS is used to compensate for motion blur due to small
1955 * movements of the camera during capture. Unlike digital image
1956 * stabilization ({@link CaptureRequest#CONTROL_VIDEO_STABILIZATION_MODE android.control.videoStabilizationMode}), OIS
1957 * makes use of mechanical elements to stabilize the camera
1958 * sensor, and thus allows for longer exposure times before
1959 * camera shake becomes apparent.</p>
1960 * <p>Switching between different optical stabilization modes may take several
1961 * frames to initialize, the camera device will report the current mode in
1962 * capture result metadata. For example, When "ON" mode is requested, the
1963 * optical stabilization modes in the first several capture results may still
1964 * be "OFF", and it will become "ON" when the initialization is done.</p>
1965 * <p>If a camera device supports both OIS and digital image stabilization
1966 * ({@link CaptureRequest#CONTROL_VIDEO_STABILIZATION_MODE android.control.videoStabilizationMode}), turning both modes on may produce undesirable
1967 * interaction, so it is recommended not to enable both at the same time.</p>
1968 * <p>Not all devices will support OIS; see
1969 * {@link CameraCharacteristics#LENS_INFO_AVAILABLE_OPTICAL_STABILIZATION android.lens.info.availableOpticalStabilization} for
1970 * available controls.</p>
1971 * <p><b>Possible values:</b>
1973 * <li>{@link #LENS_OPTICAL_STABILIZATION_MODE_OFF OFF}</li>
1974 * <li>{@link #LENS_OPTICAL_STABILIZATION_MODE_ON ON}</li>
1976 * <p><b>Available values for this device:</b><br>
1977 * {@link CameraCharacteristics#LENS_INFO_AVAILABLE_OPTICAL_STABILIZATION android.lens.info.availableOpticalStabilization}</p>
1978 * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
1979 * <p><b>Limited capability</b> -
1980 * Present on all camera devices that report being at least {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED HARDWARE_LEVEL_LIMITED} devices in the
1981 * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
1983 * @see CaptureRequest#CONTROL_VIDEO_STABILIZATION_MODE
1984 * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
1985 * @see CameraCharacteristics#LENS_INFO_AVAILABLE_OPTICAL_STABILIZATION
1986 * @see #LENS_OPTICAL_STABILIZATION_MODE_OFF
1987 * @see #LENS_OPTICAL_STABILIZATION_MODE_ON
1990 public static final Key<Integer> LENS_OPTICAL_STABILIZATION_MODE =
1991 new Key<Integer>("android.lens.opticalStabilizationMode", int.class);
1994 * <p>Mode of operation for the noise reduction algorithm.</p>
1995 * <p>The noise reduction algorithm attempts to improve image quality by removing
1996 * excessive noise added by the capture process, especially in dark conditions.</p>
1997 * <p>OFF means no noise reduction will be applied by the camera device, for both raw and
1999 * <p>MINIMAL means that only sensor raw domain basic noise reduction is enabled ,to remove
2000 * demosaicing or other processing artifacts. For YUV_REPROCESSING, MINIMAL is same as OFF.
2001 * This mode is optional, may not be support by all devices. The application should check
2002 * {@link CameraCharacteristics#NOISE_REDUCTION_AVAILABLE_NOISE_REDUCTION_MODES android.noiseReduction.availableNoiseReductionModes} before using it.</p>
2003 * <p>FAST/HIGH_QUALITY both mean camera device determined noise filtering
2004 * will be applied. HIGH_QUALITY mode indicates that the camera device
2005 * will use the highest-quality noise filtering algorithms,
2006 * even if it slows down capture rate. FAST means the camera device will not
2007 * slow down capture rate when applying noise filtering. FAST may be the same as MINIMAL if
2008 * MINIMAL is listed, or the same as OFF if any noise filtering will slow down capture rate.
2009 * Every output stream will have a similar amount of enhancement applied.</p>
2010 * <p>ZERO_SHUTTER_LAG is meant to be used by applications that maintain a continuous circular
2011 * buffer of high-resolution images during preview and reprocess image(s) from that buffer
2012 * into a final capture when triggered by the user. In this mode, the camera device applies
2013 * noise reduction to low-resolution streams (below maximum recording resolution) to maximize
2014 * preview quality, but does not apply noise reduction to high-resolution streams, since
2015 * those will be reprocessed later if necessary.</p>
2016 * <p>For YUV_REPROCESSING, these FAST/HIGH_QUALITY modes both mean that the camera device
2017 * will apply FAST/HIGH_QUALITY YUV domain noise reduction, respectively. The camera device
2018 * may adjust the noise reduction parameters for best image quality based on the
2019 * {@link CaptureRequest#REPROCESS_EFFECTIVE_EXPOSURE_FACTOR android.reprocess.effectiveExposureFactor} if it is set.</p>
2020 * <p><b>Possible values:</b>
2022 * <li>{@link #NOISE_REDUCTION_MODE_OFF OFF}</li>
2023 * <li>{@link #NOISE_REDUCTION_MODE_FAST FAST}</li>
2024 * <li>{@link #NOISE_REDUCTION_MODE_HIGH_QUALITY HIGH_QUALITY}</li>
2025 * <li>{@link #NOISE_REDUCTION_MODE_MINIMAL MINIMAL}</li>
2026 * <li>{@link #NOISE_REDUCTION_MODE_ZERO_SHUTTER_LAG ZERO_SHUTTER_LAG}</li>
2028 * <p><b>Available values for this device:</b><br>
2029 * {@link CameraCharacteristics#NOISE_REDUCTION_AVAILABLE_NOISE_REDUCTION_MODES android.noiseReduction.availableNoiseReductionModes}</p>
2030 * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
2031 * <p><b>Full capability</b> -
2032 * Present on all camera devices that report being {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_FULL HARDWARE_LEVEL_FULL} devices in the
2033 * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
2035 * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
2036 * @see CameraCharacteristics#NOISE_REDUCTION_AVAILABLE_NOISE_REDUCTION_MODES
2037 * @see CaptureRequest#REPROCESS_EFFECTIVE_EXPOSURE_FACTOR
2038 * @see #NOISE_REDUCTION_MODE_OFF
2039 * @see #NOISE_REDUCTION_MODE_FAST
2040 * @see #NOISE_REDUCTION_MODE_HIGH_QUALITY
2041 * @see #NOISE_REDUCTION_MODE_MINIMAL
2042 * @see #NOISE_REDUCTION_MODE_ZERO_SHUTTER_LAG
2045 public static final Key<Integer> NOISE_REDUCTION_MODE =
2046 new Key<Integer>("android.noiseReduction.mode", int.class);
2049 * <p>An application-specified ID for the current
2050 * request. Must be maintained unchanged in output
2052 * <p><b>Units</b>: arbitrary integer assigned by application</p>
2053 * <p><b>Range of valid values:</b><br>
2055 * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
2058 public static final Key<Integer> REQUEST_ID =
2059 new Key<Integer>("android.request.id", int.class);
2062 * <p>The desired region of the sensor to read out for this capture.</p>
2063 * <p>This control can be used to implement digital zoom.</p>
2064 * <p>The crop region coordinate system is based off
2065 * {@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}, with <code>(0, 0)</code> being the
2066 * top-left corner of the sensor active array.</p>
2067 * <p>Output streams use this rectangle to produce their output,
2068 * cropping to a smaller region if necessary to maintain the
2069 * stream's aspect ratio, then scaling the sensor input to
2070 * match the output's configured resolution.</p>
2071 * <p>The crop region is applied after the RAW to other color
2072 * space (e.g. YUV) conversion. Since raw streams
2073 * (e.g. RAW16) don't have the conversion stage, they are not
2074 * croppable. The crop region will be ignored by raw streams.</p>
2075 * <p>For non-raw streams, any additional per-stream cropping will
2076 * be done to maximize the final pixel area of the stream.</p>
2077 * <p>For example, if the crop region is set to a 4:3 aspect
2078 * ratio, then 4:3 streams will use the exact crop
2079 * region. 16:9 streams will further crop vertically
2081 * <p>Conversely, if the crop region is set to a 16:9, then 4:3
2082 * outputs will crop horizontally (pillarbox), and 16:9
2083 * streams will match exactly. These additional crops will
2084 * be centered within the crop region.</p>
2085 * <p>The width and height of the crop region cannot
2086 * be set to be smaller than
2087 * <code>floor( activeArraySize.width / {@link CameraCharacteristics#SCALER_AVAILABLE_MAX_DIGITAL_ZOOM android.scaler.availableMaxDigitalZoom} )</code> and
2088 * <code>floor( activeArraySize.height / {@link CameraCharacteristics#SCALER_AVAILABLE_MAX_DIGITAL_ZOOM android.scaler.availableMaxDigitalZoom} )</code>, respectively.</p>
2089 * <p>The camera device may adjust the crop region to account
2090 * for rounding and other hardware requirements; the final
2091 * crop region used will be included in the output capture
2093 * <p><b>Units</b>: Pixel coordinates relative to
2094 * {@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}</p>
2095 * <p>This key is available on all devices.</p>
2097 * @see CameraCharacteristics#SCALER_AVAILABLE_MAX_DIGITAL_ZOOM
2098 * @see CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE
2101 public static final Key<android.graphics.Rect> SCALER_CROP_REGION =
2102 new Key<android.graphics.Rect>("android.scaler.cropRegion", android.graphics.Rect.class);
2105 * <p>Duration each pixel is exposed to
2107 * <p>If the sensor can't expose this exact duration, it will shorten the
2108 * duration exposed to the nearest possible value (rather than expose longer).
2109 * The final exposure time used will be available in the output capture result.</p>
2110 * <p>This control is only effective if {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode} or {@link CaptureRequest#CONTROL_MODE android.control.mode} is set to
2111 * OFF; otherwise the auto-exposure algorithm will override this value.</p>
2112 * <p><b>Units</b>: Nanoseconds</p>
2113 * <p><b>Range of valid values:</b><br>
2114 * {@link CameraCharacteristics#SENSOR_INFO_EXPOSURE_TIME_RANGE android.sensor.info.exposureTimeRange}</p>
2115 * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
2116 * <p><b>Full capability</b> -
2117 * Present on all camera devices that report being {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_FULL HARDWARE_LEVEL_FULL} devices in the
2118 * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
2120 * @see CaptureRequest#CONTROL_AE_MODE
2121 * @see CaptureRequest#CONTROL_MODE
2122 * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
2123 * @see CameraCharacteristics#SENSOR_INFO_EXPOSURE_TIME_RANGE
2126 public static final Key<Long> SENSOR_EXPOSURE_TIME =
2127 new Key<Long>("android.sensor.exposureTime", long.class);
2130 * <p>Duration from start of frame exposure to
2131 * start of next frame exposure.</p>
2132 * <p>The maximum frame rate that can be supported by a camera subsystem is
2133 * a function of many factors:</p>
2135 * <li>Requested resolutions of output image streams</li>
2136 * <li>Availability of binning / skipping modes on the imager</li>
2137 * <li>The bandwidth of the imager interface</li>
2138 * <li>The bandwidth of the various ISP processing blocks</li>
2140 * <p>Since these factors can vary greatly between different ISPs and
2141 * sensors, the camera abstraction tries to represent the bandwidth
2142 * restrictions with as simple a model as possible.</p>
2143 * <p>The model presented has the following characteristics:</p>
2145 * <li>The image sensor is always configured to output the smallest
2146 * resolution possible given the application's requested output stream
2147 * sizes. The smallest resolution is defined as being at least as large
2148 * as the largest requested output stream size; the camera pipeline must
2149 * never digitally upsample sensor data when the crop region covers the
2150 * whole sensor. In general, this means that if only small output stream
2151 * resolutions are configured, the sensor can provide a higher frame
2153 * <li>Since any request may use any or all the currently configured
2154 * output streams, the sensor and ISP must be configured to support
2155 * scaling a single capture to all the streams at the same time. This
2156 * means the camera pipeline must be ready to produce the largest
2157 * requested output size without any delay. Therefore, the overall
2158 * frame rate of a given configured stream set is governed only by the
2159 * largest requested stream resolution.</li>
2160 * <li>Using more than one output stream in a request does not affect the
2161 * frame duration.</li>
2162 * <li>Certain format-streams may need to do additional background processing
2163 * before data is consumed/produced by that stream. These processors
2164 * can run concurrently to the rest of the camera pipeline, but
2165 * cannot process more than 1 capture at a time.</li>
2167 * <p>The necessary information for the application, given the model above,
2168 * is provided via the {@link CameraCharacteristics#SCALER_STREAM_CONFIGURATION_MAP android.scaler.streamConfigurationMap} field using
2169 * {@link android.hardware.camera2.params.StreamConfigurationMap#getOutputMinFrameDuration }.
2170 * These are used to determine the maximum frame rate / minimum frame
2171 * duration that is possible for a given stream configuration.</p>
2172 * <p>Specifically, the application can use the following rules to
2173 * determine the minimum frame duration it can request from the camera
2176 * <li>Let the set of currently configured input/output streams
2177 * be called <code>S</code>.</li>
2178 * <li>Find the minimum frame durations for each stream in <code>S</code>, by looking
2179 * it up in {@link CameraCharacteristics#SCALER_STREAM_CONFIGURATION_MAP android.scaler.streamConfigurationMap} using {@link android.hardware.camera2.params.StreamConfigurationMap#getOutputMinFrameDuration }
2180 * (with its respective size/format). Let this set of frame durations be
2181 * called <code>F</code>.</li>
2182 * <li>For any given request <code>R</code>, the minimum frame duration allowed
2183 * for <code>R</code> is the maximum out of all values in <code>F</code>. Let the streams
2184 * used in <code>R</code> be called <code>S_r</code>.</li>
2186 * <p>If none of the streams in <code>S_r</code> have a stall time (listed in {@link android.hardware.camera2.params.StreamConfigurationMap#getOutputStallDuration }
2187 * using its respective size/format), then the frame duration in <code>F</code>
2188 * determines the steady state frame rate that the application will get
2189 * if it uses <code>R</code> as a repeating request. Let this special kind of
2190 * request be called <code>Rsimple</code>.</p>
2191 * <p>A repeating request <code>Rsimple</code> can be <em>occasionally</em> interleaved
2192 * by a single capture of a new request <code>Rstall</code> (which has at least
2193 * one in-use stream with a non-0 stall time) and if <code>Rstall</code> has the
2194 * same minimum frame duration this will not cause a frame rate loss
2195 * if all buffers from the previous <code>Rstall</code> have already been
2197 * <p>For more details about stalling, see
2198 * {@link android.hardware.camera2.params.StreamConfigurationMap#getOutputStallDuration }.</p>
2199 * <p>This control is only effective if {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode} or {@link CaptureRequest#CONTROL_MODE android.control.mode} is set to
2200 * OFF; otherwise the auto-exposure algorithm will override this value.</p>
2201 * <p><b>Units</b>: Nanoseconds</p>
2202 * <p><b>Range of valid values:</b><br>
2203 * See {@link CameraCharacteristics#SENSOR_INFO_MAX_FRAME_DURATION android.sensor.info.maxFrameDuration},
2204 * {@link CameraCharacteristics#SCALER_STREAM_CONFIGURATION_MAP android.scaler.streamConfigurationMap}. The duration
2205 * is capped to <code>max(duration, exposureTime + overhead)</code>.</p>
2206 * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
2207 * <p><b>Full capability</b> -
2208 * Present on all camera devices that report being {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_FULL HARDWARE_LEVEL_FULL} devices in the
2209 * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
2211 * @see CaptureRequest#CONTROL_AE_MODE
2212 * @see CaptureRequest#CONTROL_MODE
2213 * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
2214 * @see CameraCharacteristics#SCALER_STREAM_CONFIGURATION_MAP
2215 * @see CameraCharacteristics#SENSOR_INFO_MAX_FRAME_DURATION
2218 public static final Key<Long> SENSOR_FRAME_DURATION =
2219 new Key<Long>("android.sensor.frameDuration", long.class);
2222 * <p>The amount of gain applied to sensor data
2223 * before processing.</p>
2224 * <p>The sensitivity is the standard ISO sensitivity value,
2225 * as defined in ISO 12232:2006.</p>
2226 * <p>The sensitivity must be within {@link CameraCharacteristics#SENSOR_INFO_SENSITIVITY_RANGE android.sensor.info.sensitivityRange}, and
2227 * if if it less than {@link CameraCharacteristics#SENSOR_MAX_ANALOG_SENSITIVITY android.sensor.maxAnalogSensitivity}, the camera device
2228 * is guaranteed to use only analog amplification for applying the gain.</p>
2229 * <p>If the camera device cannot apply the exact sensitivity
2230 * requested, it will reduce the gain to the nearest supported
2231 * value. The final sensitivity used will be available in the
2232 * output capture result.</p>
2233 * <p><b>Units</b>: ISO arithmetic units</p>
2234 * <p><b>Range of valid values:</b><br>
2235 * {@link CameraCharacteristics#SENSOR_INFO_SENSITIVITY_RANGE android.sensor.info.sensitivityRange}</p>
2236 * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
2237 * <p><b>Full capability</b> -
2238 * Present on all camera devices that report being {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_FULL HARDWARE_LEVEL_FULL} devices in the
2239 * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
2241 * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
2242 * @see CameraCharacteristics#SENSOR_INFO_SENSITIVITY_RANGE
2243 * @see CameraCharacteristics#SENSOR_MAX_ANALOG_SENSITIVITY
2246 public static final Key<Integer> SENSOR_SENSITIVITY =
2247 new Key<Integer>("android.sensor.sensitivity", int.class);
2250 * <p>A pixel <code>[R, G_even, G_odd, B]</code> that supplies the test pattern
2251 * when {@link CaptureRequest#SENSOR_TEST_PATTERN_MODE android.sensor.testPatternMode} is SOLID_COLOR.</p>
2252 * <p>Each color channel is treated as an unsigned 32-bit integer.
2253 * The camera device then uses the most significant X bits
2254 * that correspond to how many bits are in its Bayer raw sensor
2256 * <p>For example, a sensor with RAW10 Bayer output would use the
2257 * 10 most significant bits from each color channel.</p>
2258 * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
2260 * @see CaptureRequest#SENSOR_TEST_PATTERN_MODE
2263 public static final Key<int[]> SENSOR_TEST_PATTERN_DATA =
2264 new Key<int[]>("android.sensor.testPatternData", int[].class);
2267 * <p>When enabled, the sensor sends a test pattern instead of
2268 * doing a real exposure from the camera.</p>
2269 * <p>When a test pattern is enabled, all manual sensor controls specified
2270 * by android.sensor.* will be ignored. All other controls should
2271 * work as normal.</p>
2272 * <p>For example, if manual flash is enabled, flash firing should still
2273 * occur (and that the test pattern remain unmodified, since the flash
2274 * would not actually affect it).</p>
2275 * <p>Defaults to OFF.</p>
2276 * <p><b>Possible values:</b>
2278 * <li>{@link #SENSOR_TEST_PATTERN_MODE_OFF OFF}</li>
2279 * <li>{@link #SENSOR_TEST_PATTERN_MODE_SOLID_COLOR SOLID_COLOR}</li>
2280 * <li>{@link #SENSOR_TEST_PATTERN_MODE_COLOR_BARS COLOR_BARS}</li>
2281 * <li>{@link #SENSOR_TEST_PATTERN_MODE_COLOR_BARS_FADE_TO_GRAY COLOR_BARS_FADE_TO_GRAY}</li>
2282 * <li>{@link #SENSOR_TEST_PATTERN_MODE_PN9 PN9}</li>
2283 * <li>{@link #SENSOR_TEST_PATTERN_MODE_CUSTOM1 CUSTOM1}</li>
2285 * <p><b>Available values for this device:</b><br>
2286 * {@link CameraCharacteristics#SENSOR_AVAILABLE_TEST_PATTERN_MODES android.sensor.availableTestPatternModes}</p>
2287 * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
2289 * @see CameraCharacteristics#SENSOR_AVAILABLE_TEST_PATTERN_MODES
2290 * @see #SENSOR_TEST_PATTERN_MODE_OFF
2291 * @see #SENSOR_TEST_PATTERN_MODE_SOLID_COLOR
2292 * @see #SENSOR_TEST_PATTERN_MODE_COLOR_BARS
2293 * @see #SENSOR_TEST_PATTERN_MODE_COLOR_BARS_FADE_TO_GRAY
2294 * @see #SENSOR_TEST_PATTERN_MODE_PN9
2295 * @see #SENSOR_TEST_PATTERN_MODE_CUSTOM1
2298 public static final Key<Integer> SENSOR_TEST_PATTERN_MODE =
2299 new Key<Integer>("android.sensor.testPatternMode", int.class);
2302 * <p>Quality of lens shading correction applied
2303 * to the image data.</p>
2304 * <p>When set to OFF mode, no lens shading correction will be applied by the
2305 * camera device, and an identity lens shading map data will be provided
2306 * if <code>{@link CaptureRequest#STATISTICS_LENS_SHADING_MAP_MODE android.statistics.lensShadingMapMode} == ON</code>. For example, for lens
2307 * shading map with size of <code>[ 4, 3 ]</code>,
2308 * the output {@link CaptureResult#STATISTICS_LENS_SHADING_CORRECTION_MAP android.statistics.lensShadingCorrectionMap} for this case will be an identity
2309 * map shown below:</p>
2310 * <pre><code>[ 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0,
2311 * 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0,
2312 * 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0,
2313 * 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0,
2314 * 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0,
2315 * 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0 ]
2317 * <p>When set to other modes, lens shading correction will be applied by the camera
2318 * device. Applications can request lens shading map data by setting
2319 * {@link CaptureRequest#STATISTICS_LENS_SHADING_MAP_MODE android.statistics.lensShadingMapMode} to ON, and then the camera device will provide lens
2320 * shading map data in {@link CaptureResult#STATISTICS_LENS_SHADING_CORRECTION_MAP android.statistics.lensShadingCorrectionMap}; the returned shading map
2321 * data will be the one applied by the camera device for this capture request.</p>
2322 * <p>The shading map data may depend on the auto-exposure (AE) and AWB statistics, therefore
2323 * the reliability of the map data may be affected by the AE and AWB algorithms. When AE and
2324 * AWB are in AUTO modes({@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode} <code>!=</code> OFF and {@link CaptureRequest#CONTROL_AWB_MODE android.control.awbMode} <code>!=</code>
2325 * OFF), to get best results, it is recommended that the applications wait for the AE and AWB
2326 * to be converged before using the returned shading map data.</p>
2327 * <p><b>Possible values:</b>
2329 * <li>{@link #SHADING_MODE_OFF OFF}</li>
2330 * <li>{@link #SHADING_MODE_FAST FAST}</li>
2331 * <li>{@link #SHADING_MODE_HIGH_QUALITY HIGH_QUALITY}</li>
2333 * <p><b>Available values for this device:</b><br>
2334 * {@link CameraCharacteristics#SHADING_AVAILABLE_MODES android.shading.availableModes}</p>
2335 * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
2336 * <p><b>Full capability</b> -
2337 * Present on all camera devices that report being {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_FULL HARDWARE_LEVEL_FULL} devices in the
2338 * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
2340 * @see CaptureRequest#CONTROL_AE_MODE
2341 * @see CaptureRequest#CONTROL_AWB_MODE
2342 * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
2343 * @see CameraCharacteristics#SHADING_AVAILABLE_MODES
2344 * @see CaptureResult#STATISTICS_LENS_SHADING_CORRECTION_MAP
2345 * @see CaptureRequest#STATISTICS_LENS_SHADING_MAP_MODE
2346 * @see #SHADING_MODE_OFF
2347 * @see #SHADING_MODE_FAST
2348 * @see #SHADING_MODE_HIGH_QUALITY
2351 public static final Key<Integer> SHADING_MODE =
2352 new Key<Integer>("android.shading.mode", int.class);
2355 * <p>Operating mode for the face detector
2357 * <p>Whether face detection is enabled, and whether it
2358 * should output just the basic fields or the full set of
2360 * <p><b>Possible values:</b>
2362 * <li>{@link #STATISTICS_FACE_DETECT_MODE_OFF OFF}</li>
2363 * <li>{@link #STATISTICS_FACE_DETECT_MODE_SIMPLE SIMPLE}</li>
2364 * <li>{@link #STATISTICS_FACE_DETECT_MODE_FULL FULL}</li>
2366 * <p><b>Available values for this device:</b><br>
2367 * {@link CameraCharacteristics#STATISTICS_INFO_AVAILABLE_FACE_DETECT_MODES android.statistics.info.availableFaceDetectModes}</p>
2368 * <p>This key is available on all devices.</p>
2370 * @see CameraCharacteristics#STATISTICS_INFO_AVAILABLE_FACE_DETECT_MODES
2371 * @see #STATISTICS_FACE_DETECT_MODE_OFF
2372 * @see #STATISTICS_FACE_DETECT_MODE_SIMPLE
2373 * @see #STATISTICS_FACE_DETECT_MODE_FULL
2376 public static final Key<Integer> STATISTICS_FACE_DETECT_MODE =
2377 new Key<Integer>("android.statistics.faceDetectMode", int.class);
2380 * <p>Operating mode for hot pixel map generation.</p>
2381 * <p>If set to <code>true</code>, a hot pixel map is returned in {@link CaptureResult#STATISTICS_HOT_PIXEL_MAP android.statistics.hotPixelMap}.
2382 * If set to <code>false</code>, no hot pixel map will be returned.</p>
2383 * <p><b>Range of valid values:</b><br>
2384 * {@link CameraCharacteristics#STATISTICS_INFO_AVAILABLE_HOT_PIXEL_MAP_MODES android.statistics.info.availableHotPixelMapModes}</p>
2385 * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
2387 * @see CaptureResult#STATISTICS_HOT_PIXEL_MAP
2388 * @see CameraCharacteristics#STATISTICS_INFO_AVAILABLE_HOT_PIXEL_MAP_MODES
2391 public static final Key<Boolean> STATISTICS_HOT_PIXEL_MAP_MODE =
2392 new Key<Boolean>("android.statistics.hotPixelMapMode", boolean.class);
2395 * <p>Whether the camera device will output the lens
2396 * shading map in output result metadata.</p>
2397 * <p>When set to ON,
2398 * android.statistics.lensShadingMap will be provided in
2399 * the output result metadata.</p>
2400 * <p>ON is always supported on devices with the RAW capability.</p>
2401 * <p><b>Possible values:</b>
2403 * <li>{@link #STATISTICS_LENS_SHADING_MAP_MODE_OFF OFF}</li>
2404 * <li>{@link #STATISTICS_LENS_SHADING_MAP_MODE_ON ON}</li>
2406 * <p><b>Available values for this device:</b><br>
2407 * {@link CameraCharacteristics#STATISTICS_INFO_AVAILABLE_LENS_SHADING_MAP_MODES android.statistics.info.availableLensShadingMapModes}</p>
2408 * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
2409 * <p><b>Full capability</b> -
2410 * Present on all camera devices that report being {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_FULL HARDWARE_LEVEL_FULL} devices in the
2411 * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
2413 * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
2414 * @see CameraCharacteristics#STATISTICS_INFO_AVAILABLE_LENS_SHADING_MAP_MODES
2415 * @see #STATISTICS_LENS_SHADING_MAP_MODE_OFF
2416 * @see #STATISTICS_LENS_SHADING_MAP_MODE_ON
2419 public static final Key<Integer> STATISTICS_LENS_SHADING_MAP_MODE =
2420 new Key<Integer>("android.statistics.lensShadingMapMode", int.class);
2423 * <p>Tonemapping / contrast / gamma curve for the blue
2424 * channel, to use when {@link CaptureRequest#TONEMAP_MODE android.tonemap.mode} is
2425 * CONTRAST_CURVE.</p>
2426 * <p>See android.tonemap.curveRed for more details.</p>
2427 * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
2428 * <p><b>Full capability</b> -
2429 * Present on all camera devices that report being {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_FULL HARDWARE_LEVEL_FULL} devices in the
2430 * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
2432 * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
2433 * @see CaptureRequest#TONEMAP_MODE
2436 public static final Key<float[]> TONEMAP_CURVE_BLUE =
2437 new Key<float[]>("android.tonemap.curveBlue", float[].class);
2440 * <p>Tonemapping / contrast / gamma curve for the green
2441 * channel, to use when {@link CaptureRequest#TONEMAP_MODE android.tonemap.mode} is
2442 * CONTRAST_CURVE.</p>
2443 * <p>See android.tonemap.curveRed for more details.</p>
2444 * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
2445 * <p><b>Full capability</b> -
2446 * Present on all camera devices that report being {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_FULL HARDWARE_LEVEL_FULL} devices in the
2447 * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
2449 * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
2450 * @see CaptureRequest#TONEMAP_MODE
2453 public static final Key<float[]> TONEMAP_CURVE_GREEN =
2454 new Key<float[]>("android.tonemap.curveGreen", float[].class);
2457 * <p>Tonemapping / contrast / gamma curve for the red
2458 * channel, to use when {@link CaptureRequest#TONEMAP_MODE android.tonemap.mode} is
2459 * CONTRAST_CURVE.</p>
2460 * <p>Each channel's curve is defined by an array of control points:</p>
2461 * <pre><code>android.tonemap.curveRed =
2462 * [ P0in, P0out, P1in, P1out, P2in, P2out, P3in, P3out, ..., PNin, PNout ]
2463 * 2 <= N <= {@link CameraCharacteristics#TONEMAP_MAX_CURVE_POINTS android.tonemap.maxCurvePoints}</code></pre>
2464 * <p>These are sorted in order of increasing <code>Pin</code>; it is
2465 * required that input values 0.0 and 1.0 are included in the list to
2466 * define a complete mapping. For input values between control points,
2467 * the camera device must linearly interpolate between the control
2469 * <p>Each curve can have an independent number of points, and the number
2470 * of points can be less than max (that is, the request doesn't have to
2471 * always provide a curve with number of points equivalent to
2472 * {@link CameraCharacteristics#TONEMAP_MAX_CURVE_POINTS android.tonemap.maxCurvePoints}).</p>
2473 * <p>A few examples, and their corresponding graphical mappings; these
2474 * only specify the red channel and the precision is limited to 4
2475 * digits, for conciseness.</p>
2476 * <p>Linear mapping:</p>
2477 * <pre><code>android.tonemap.curveRed = [ 0, 0, 1.0, 1.0 ]
2479 * <p><img alt="Linear mapping curve" src="../../../../images/camera2/metadata/android.tonemap.curveRed/linear_tonemap.png" /></p>
2480 * <p>Invert mapping:</p>
2481 * <pre><code>android.tonemap.curveRed = [ 0, 1.0, 1.0, 0 ]
2483 * <p><img alt="Inverting mapping curve" src="../../../../images/camera2/metadata/android.tonemap.curveRed/inverse_tonemap.png" /></p>
2484 * <p>Gamma 1/2.2 mapping, with 16 control points:</p>
2485 * <pre><code>android.tonemap.curveRed = [
2486 * 0.0000, 0.0000, 0.0667, 0.2920, 0.1333, 0.4002, 0.2000, 0.4812,
2487 * 0.2667, 0.5484, 0.3333, 0.6069, 0.4000, 0.6594, 0.4667, 0.7072,
2488 * 0.5333, 0.7515, 0.6000, 0.7928, 0.6667, 0.8317, 0.7333, 0.8685,
2489 * 0.8000, 0.9035, 0.8667, 0.9370, 0.9333, 0.9691, 1.0000, 1.0000 ]
2491 * <p><img alt="Gamma = 1/2.2 tonemapping curve" src="../../../../images/camera2/metadata/android.tonemap.curveRed/gamma_tonemap.png" /></p>
2492 * <p>Standard sRGB gamma mapping, per IEC 61966-2-1:1999, with 16 control points:</p>
2493 * <pre><code>android.tonemap.curveRed = [
2494 * 0.0000, 0.0000, 0.0667, 0.2864, 0.1333, 0.4007, 0.2000, 0.4845,
2495 * 0.2667, 0.5532, 0.3333, 0.6125, 0.4000, 0.6652, 0.4667, 0.7130,
2496 * 0.5333, 0.7569, 0.6000, 0.7977, 0.6667, 0.8360, 0.7333, 0.8721,
2497 * 0.8000, 0.9063, 0.8667, 0.9389, 0.9333, 0.9701, 1.0000, 1.0000 ]
2499 * <p><img alt="sRGB tonemapping curve" src="../../../../images/camera2/metadata/android.tonemap.curveRed/srgb_tonemap.png" /></p>
2500 * <p><b>Range of valid values:</b><br>
2501 * 0-1 on both input and output coordinates, normalized
2502 * as a floating-point value such that 0 == black and 1 == white.</p>
2503 * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
2504 * <p><b>Full capability</b> -
2505 * Present on all camera devices that report being {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_FULL HARDWARE_LEVEL_FULL} devices in the
2506 * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
2508 * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
2509 * @see CameraCharacteristics#TONEMAP_MAX_CURVE_POINTS
2510 * @see CaptureRequest#TONEMAP_MODE
2513 public static final Key<float[]> TONEMAP_CURVE_RED =
2514 new Key<float[]>("android.tonemap.curveRed", float[].class);
2517 * <p>Tonemapping / contrast / gamma curve to use when {@link CaptureRequest#TONEMAP_MODE android.tonemap.mode}
2518 * is CONTRAST_CURVE.</p>
2519 * <p>The tonemapCurve consist of three curves for each of red, green, and blue
2520 * channels respectively. The following example uses the red channel as an
2521 * example. The same logic applies to green and blue channel.
2522 * Each channel's curve is defined by an array of control points:</p>
2523 * <pre><code>curveRed =
2524 * [ P0(in, out), P1(in, out), P2(in, out), P3(in, out), ..., PN(in, out) ]
2525 * 2 <= N <= {@link CameraCharacteristics#TONEMAP_MAX_CURVE_POINTS android.tonemap.maxCurvePoints}</code></pre>
2526 * <p>These are sorted in order of increasing <code>Pin</code>; it is always
2527 * guaranteed that input values 0.0 and 1.0 are included in the list to
2528 * define a complete mapping. For input values between control points,
2529 * the camera device must linearly interpolate between the control
2531 * <p>Each curve can have an independent number of points, and the number
2532 * of points can be less than max (that is, the request doesn't have to
2533 * always provide a curve with number of points equivalent to
2534 * {@link CameraCharacteristics#TONEMAP_MAX_CURVE_POINTS android.tonemap.maxCurvePoints}).</p>
2535 * <p>A few examples, and their corresponding graphical mappings; these
2536 * only specify the red channel and the precision is limited to 4
2537 * digits, for conciseness.</p>
2538 * <p>Linear mapping:</p>
2539 * <pre><code>curveRed = [ (0, 0), (1.0, 1.0) ]
2541 * <p><img alt="Linear mapping curve" src="../../../../images/camera2/metadata/android.tonemap.curveRed/linear_tonemap.png" /></p>
2542 * <p>Invert mapping:</p>
2543 * <pre><code>curveRed = [ (0, 1.0), (1.0, 0) ]
2545 * <p><img alt="Inverting mapping curve" src="../../../../images/camera2/metadata/android.tonemap.curveRed/inverse_tonemap.png" /></p>
2546 * <p>Gamma 1/2.2 mapping, with 16 control points:</p>
2547 * <pre><code>curveRed = [
2548 * (0.0000, 0.0000), (0.0667, 0.2920), (0.1333, 0.4002), (0.2000, 0.4812),
2549 * (0.2667, 0.5484), (0.3333, 0.6069), (0.4000, 0.6594), (0.4667, 0.7072),
2550 * (0.5333, 0.7515), (0.6000, 0.7928), (0.6667, 0.8317), (0.7333, 0.8685),
2551 * (0.8000, 0.9035), (0.8667, 0.9370), (0.9333, 0.9691), (1.0000, 1.0000) ]
2553 * <p><img alt="Gamma = 1/2.2 tonemapping curve" src="../../../../images/camera2/metadata/android.tonemap.curveRed/gamma_tonemap.png" /></p>
2554 * <p>Standard sRGB gamma mapping, per IEC 61966-2-1:1999, with 16 control points:</p>
2555 * <pre><code>curveRed = [
2556 * (0.0000, 0.0000), (0.0667, 0.2864), (0.1333, 0.4007), (0.2000, 0.4845),
2557 * (0.2667, 0.5532), (0.3333, 0.6125), (0.4000, 0.6652), (0.4667, 0.7130),
2558 * (0.5333, 0.7569), (0.6000, 0.7977), (0.6667, 0.8360), (0.7333, 0.8721),
2559 * (0.8000, 0.9063), (0.8667, 0.9389), (0.9333, 0.9701), (1.0000, 1.0000) ]
2561 * <p><img alt="sRGB tonemapping curve" src="../../../../images/camera2/metadata/android.tonemap.curveRed/srgb_tonemap.png" /></p>
2562 * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
2563 * <p><b>Full capability</b> -
2564 * Present on all camera devices that report being {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_FULL HARDWARE_LEVEL_FULL} devices in the
2565 * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
2567 * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
2568 * @see CameraCharacteristics#TONEMAP_MAX_CURVE_POINTS
2569 * @see CaptureRequest#TONEMAP_MODE
2573 public static final Key<android.hardware.camera2.params.TonemapCurve> TONEMAP_CURVE =
2574 new Key<android.hardware.camera2.params.TonemapCurve>("android.tonemap.curve", android.hardware.camera2.params.TonemapCurve.class);
2577 * <p>High-level global contrast/gamma/tonemapping control.</p>
2578 * <p>When switching to an application-defined contrast curve by setting
2579 * {@link CaptureRequest#TONEMAP_MODE android.tonemap.mode} to CONTRAST_CURVE, the curve is defined
2580 * per-channel with a set of <code>(in, out)</code> points that specify the
2581 * mapping from input high-bit-depth pixel value to the output
2582 * low-bit-depth value. Since the actual pixel ranges of both input
2583 * and output may change depending on the camera pipeline, the values
2584 * are specified by normalized floating-point numbers.</p>
2585 * <p>More-complex color mapping operations such as 3D color look-up
2586 * tables, selective chroma enhancement, or other non-linear color
2587 * transforms will be disabled when {@link CaptureRequest#TONEMAP_MODE android.tonemap.mode} is
2588 * CONTRAST_CURVE.</p>
2589 * <p>When using either FAST or HIGH_QUALITY, the camera device will
2590 * emit its own tonemap curve in {@link CaptureRequest#TONEMAP_CURVE android.tonemap.curve}.
2591 * These values are always available, and as close as possible to the
2592 * actually used nonlinear/nonglobal transforms.</p>
2593 * <p>If a request is sent with CONTRAST_CURVE with the camera device's
2594 * provided curve in FAST or HIGH_QUALITY, the image's tonemap will be
2595 * roughly the same.</p>
2596 * <p><b>Possible values:</b>
2598 * <li>{@link #TONEMAP_MODE_CONTRAST_CURVE CONTRAST_CURVE}</li>
2599 * <li>{@link #TONEMAP_MODE_FAST FAST}</li>
2600 * <li>{@link #TONEMAP_MODE_HIGH_QUALITY HIGH_QUALITY}</li>
2601 * <li>{@link #TONEMAP_MODE_GAMMA_VALUE GAMMA_VALUE}</li>
2602 * <li>{@link #TONEMAP_MODE_PRESET_CURVE PRESET_CURVE}</li>
2604 * <p><b>Available values for this device:</b><br>
2605 * {@link CameraCharacteristics#TONEMAP_AVAILABLE_TONE_MAP_MODES android.tonemap.availableToneMapModes}</p>
2606 * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
2607 * <p><b>Full capability</b> -
2608 * Present on all camera devices that report being {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_FULL HARDWARE_LEVEL_FULL} devices in the
2609 * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
2611 * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
2612 * @see CameraCharacteristics#TONEMAP_AVAILABLE_TONE_MAP_MODES
2613 * @see CaptureRequest#TONEMAP_CURVE
2614 * @see CaptureRequest#TONEMAP_MODE
2615 * @see #TONEMAP_MODE_CONTRAST_CURVE
2616 * @see #TONEMAP_MODE_FAST
2617 * @see #TONEMAP_MODE_HIGH_QUALITY
2618 * @see #TONEMAP_MODE_GAMMA_VALUE
2619 * @see #TONEMAP_MODE_PRESET_CURVE
2622 public static final Key<Integer> TONEMAP_MODE =
2623 new Key<Integer>("android.tonemap.mode", int.class);
2626 * <p>Tonemapping curve to use when {@link CaptureRequest#TONEMAP_MODE android.tonemap.mode} is
2628 * <p>The tonemap curve will be defined the following formula:
2629 * * OUT = pow(IN, 1.0 / gamma)
2630 * where IN and OUT is the input pixel value scaled to range [0.0, 1.0],
2631 * pow is the power function and gamma is the gamma value specified by this
2633 * <p>The same curve will be applied to all color channels. The camera device
2634 * may clip the input gamma value to its supported range. The actual applied
2635 * value will be returned in capture result.</p>
2636 * <p>The valid range of gamma value varies on different devices, but values
2637 * within [1.0, 5.0] are guaranteed not to be clipped.</p>
2638 * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
2640 * @see CaptureRequest#TONEMAP_MODE
2643 public static final Key<Float> TONEMAP_GAMMA =
2644 new Key<Float>("android.tonemap.gamma", float.class);
2647 * <p>Tonemapping curve to use when {@link CaptureRequest#TONEMAP_MODE android.tonemap.mode} is
2649 * <p>The tonemap curve will be defined by specified standard.</p>
2650 * <p>sRGB (approximated by 16 control points):</p>
2651 * <p><img alt="sRGB tonemapping curve" src="../../../../images/camera2/metadata/android.tonemap.curveRed/srgb_tonemap.png" /></p>
2652 * <p>Rec. 709 (approximated by 16 control points):</p>
2653 * <p><img alt="Rec. 709 tonemapping curve" src="../../../../images/camera2/metadata/android.tonemap.curveRed/rec709_tonemap.png" /></p>
2654 * <p>Note that above figures show a 16 control points approximation of preset
2655 * curves. Camera devices may apply a different approximation to the curve.</p>
2656 * <p><b>Possible values:</b>
2658 * <li>{@link #TONEMAP_PRESET_CURVE_SRGB SRGB}</li>
2659 * <li>{@link #TONEMAP_PRESET_CURVE_REC709 REC709}</li>
2661 * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
2663 * @see CaptureRequest#TONEMAP_MODE
2664 * @see #TONEMAP_PRESET_CURVE_SRGB
2665 * @see #TONEMAP_PRESET_CURVE_REC709
2668 public static final Key<Integer> TONEMAP_PRESET_CURVE =
2669 new Key<Integer>("android.tonemap.presetCurve", int.class);
2672 * <p>This LED is nominally used to indicate to the user
2673 * that the camera is powered on and may be streaming images back to the
2674 * Application Processor. In certain rare circumstances, the OS may
2675 * disable this when video is processed locally and not transmitted to
2676 * any untrusted applications.</p>
2677 * <p>In particular, the LED <em>must</em> always be on when the data could be
2678 * transmitted off the device. The LED <em>should</em> always be on whenever
2679 * data is stored locally on the device.</p>
2680 * <p>The LED <em>may</em> be off if a trusted application is using the data that
2681 * doesn't violate the above rules.</p>
2682 * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
2685 public static final Key<Boolean> LED_TRANSMIT =
2686 new Key<Boolean>("android.led.transmit", boolean.class);
2689 * <p>Whether black-level compensation is locked
2690 * to its current values, or is free to vary.</p>
2691 * <p>When set to <code>true</code> (ON), the values used for black-level
2692 * compensation will not change until the lock is set to
2693 * <code>false</code> (OFF).</p>
2694 * <p>Since changes to certain capture parameters (such as
2695 * exposure time) may require resetting of black level
2696 * compensation, the camera device must report whether setting
2697 * the black level lock was successful in the output result
2699 * <p>For example, if a sequence of requests is as follows:</p>
2701 * <li>Request 1: Exposure = 10ms, Black level lock = OFF</li>
2702 * <li>Request 2: Exposure = 10ms, Black level lock = ON</li>
2703 * <li>Request 3: Exposure = 10ms, Black level lock = ON</li>
2704 * <li>Request 4: Exposure = 20ms, Black level lock = ON</li>
2705 * <li>Request 5: Exposure = 20ms, Black level lock = ON</li>
2706 * <li>Request 6: Exposure = 20ms, Black level lock = ON</li>
2708 * <p>And the exposure change in Request 4 requires the camera
2709 * device to reset the black level offsets, then the output
2710 * result metadata is expected to be:</p>
2712 * <li>Result 1: Exposure = 10ms, Black level lock = OFF</li>
2713 * <li>Result 2: Exposure = 10ms, Black level lock = ON</li>
2714 * <li>Result 3: Exposure = 10ms, Black level lock = ON</li>
2715 * <li>Result 4: Exposure = 20ms, Black level lock = OFF</li>
2716 * <li>Result 5: Exposure = 20ms, Black level lock = ON</li>
2717 * <li>Result 6: Exposure = 20ms, Black level lock = ON</li>
2719 * <p>This indicates to the application that on frame 4, black
2720 * levels were reset due to exposure value changes, and pixel
2721 * values may not be consistent across captures.</p>
2722 * <p>The camera device will maintain the lock to the extent
2723 * possible, only overriding the lock to OFF when changes to
2724 * other request parameters require a black level recalculation
2726 * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
2727 * <p><b>Full capability</b> -
2728 * Present on all camera devices that report being {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_FULL HARDWARE_LEVEL_FULL} devices in the
2729 * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
2731 * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
2734 public static final Key<Boolean> BLACK_LEVEL_LOCK =
2735 new Key<Boolean>("android.blackLevel.lock", boolean.class);
2738 * <p>The amount of exposure time increase factor applied to the original output
2739 * frame by the application processing before sending for reprocessing.</p>
2740 * <p>This is optional, and will be supported if the camera device supports YUV_REPROCESSING
2741 * capability ({@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES android.request.availableCapabilities} contains YUV_REPROCESSING).</p>
2742 * <p>For some YUV reprocessing use cases, the application may choose to filter the original
2743 * output frames to effectively reduce the noise to the same level as a frame that was
2744 * captured with longer exposure time. To be more specific, assuming the original captured
2745 * images were captured with a sensitivity of S and an exposure time of T, the model in
2746 * the camera device is that the amount of noise in the image would be approximately what
2747 * would be expected if the original capture parameters had been a sensitivity of
2748 * S/effectiveExposureFactor and an exposure time of T*effectiveExposureFactor, rather
2749 * than S and T respectively. If the captured images were processed by the application
2750 * before being sent for reprocessing, then the application may have used image processing
2751 * algorithms and/or multi-frame image fusion to reduce the noise in the
2752 * application-processed images (input images). By using the effectiveExposureFactor
2753 * control, the application can communicate to the camera device the actual noise level
2754 * improvement in the application-processed image. With this information, the camera
2755 * device can select appropriate noise reduction and edge enhancement parameters to avoid
2756 * excessive noise reduction ({@link CaptureRequest#NOISE_REDUCTION_MODE android.noiseReduction.mode}) and insufficient edge
2757 * enhancement ({@link CaptureRequest#EDGE_MODE android.edge.mode}) being applied to the reprocessed frames.</p>
2758 * <p>For example, for multi-frame image fusion use case, the application may fuse
2759 * multiple output frames together to a final frame for reprocessing. When N image are
2760 * fused into 1 image for reprocessing, the exposure time increase factor could be up to
2761 * square root of N (based on a simple photon shot noise model). The camera device will
2762 * adjust the reprocessing noise reduction and edge enhancement parameters accordingly to
2763 * produce the best quality images.</p>
2764 * <p>This is relative factor, 1.0 indicates the application hasn't processed the input
2765 * buffer in a way that affects its effective exposure time.</p>
2766 * <p>This control is only effective for YUV reprocessing capture request. For noise
2767 * reduction reprocessing, it is only effective when <code>{@link CaptureRequest#NOISE_REDUCTION_MODE android.noiseReduction.mode} != OFF</code>.
2768 * Similarly, for edge enhancement reprocessing, it is only effective when
2769 * <code>{@link CaptureRequest#EDGE_MODE android.edge.mode} != OFF</code>.</p>
2770 * <p><b>Units</b>: Relative exposure time increase factor.</p>
2771 * <p><b>Range of valid values:</b><br>
2773 * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
2774 * <p><b>Limited capability</b> -
2775 * Present on all camera devices that report being at least {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED HARDWARE_LEVEL_LIMITED} devices in the
2776 * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
2778 * @see CaptureRequest#EDGE_MODE
2779 * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
2780 * @see CaptureRequest#NOISE_REDUCTION_MODE
2781 * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
2784 public static final Key<Float> REPROCESS_EFFECTIVE_EXPOSURE_FACTOR =
2785 new Key<Float>("android.reprocess.effectiveExposureFactor", float.class);
2787 /*~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~
2788 * End generated code
2789 *~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~O@*/