/* * Copyright (C) 2013 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package android.hardware.camera2; import android.hardware.camera2.impl.CameraMetadataNative; import java.util.Collections; import java.util.List; /** *
The properties describing a * {@link CameraDevice CameraDevice}.
* *These properties are fixed for a given CameraDevice, and can be queried * through the {@link CameraManager CameraManager} * interface in addition to through the CameraDevice interface.
* * @see CameraDevice * @see CameraManager */ public final class CameraCharacteristics extends CameraMetadata { private final CameraMetadataNative mProperties; private ListThe list returned is not modifiable, so any attempts to modify it will throw * a {@code UnsupportedOperationException}.
* *Each key is only listed once in the list. The order of the keys is undefined.
* *Note that there is no {@code getAvailableCameraCharacteristicsKeys()} -- use * {@link #getKeys()} instead.
* * @return List of keys supported by this CameraDevice for CaptureRequests. */ public ListThe list returned is not modifiable, so any attempts to modify it will throw * a {@code UnsupportedOperationException}.
* *Each key is only listed once in the list. The order of the keys is undefined.
* *Note that there is no {@code getAvailableCameraCharacteristicsKeys()} -- use * {@link #getKeys()} instead.
* * @return List of keys supported by this CameraDevice for CaptureResults. */ public ListThe list returned is not modifiable, so any attempts to modify it will throw * a {@code UnsupportedOperationException}.
* *Each key is only listed once in the list. The order of the keys is undefined.
* * @param metadataClass The subclass of CameraMetadata that you want to get the keys for. * * @return List of keys supported by this CameraDevice for metadataClass. * * @throws IllegalArgumentException if metadataClass is not a subclass of CameraMetadata */ private* Which set of antibanding modes are * supported *
*/ public static final Key* List of frame rate ranges supported by the * AE algorithm/hardware *
*/ public static final Key* Maximum and minimum exposure compensation * setting, in counts of * android.control.aeCompensationStepSize *
*/ public static final Key* Smallest step by which exposure compensation * can be changed *
*/ public static final Key* List of AF modes that can be * selected *
*/ public static final Key* what subset of the full color effect enum * list is supported *
*/ public static final Key* what subset of the scene mode enum list is * supported. *
*/ public static final Key* List of video stabilization modes that can * be supported *
*/ public static final Key* For AE, AWB, and AF, how many individual * regions can be listed for metering? *
*/ public static final Key* Whether this camera has a * flash *
** If no flash, none of the flash controls do * anything. All other metadata should return 0 *
*/ public static final Key* Supported resolutions for the JPEG * thumbnail *
*/ public static final Key* List of supported aperture * values *
** If variable aperture not available, only setting * should be for the fixed aperture *
*/ public static final Key* List of supported ND filter * values *
** If not available, only setting is 0. Otherwise, * lists the available exposure index values for dimming * (2 would mean the filter is set to reduce incoming * light by two stops) *
*/ public static final Key* If fitted with optical zoom, what focal * lengths are available. If not, the static focal * length *
** If optical zoom not supported, only one value * should be reported *
*/ public static final Key* List of supported optical image * stabilization modes *
*/ public static final Key* Hyperfocal distance for this lens; set to * 0 if fixed focus *
** The hyperfocal distance is used for the old * API's 'fixed' setting *
*/ public static final Key* Shortest distance from frontmost surface * of the lens that can be focused correctly *
** If the lens is fixed-focus, this should be * 0 *
*/ public static final Key* Dimensions of lens shading * map *
*/ public static final Key* Direction the camera faces relative to * device screen *
* @see #LENS_FACING_FRONT * @see #LENS_FACING_BACK */ public static final Key* If set to 1, the HAL will always split result * metadata for a single capture into multiple buffers, * returned using multiple process_capture_result calls. *
** Does not need to be listed in static * metadata. Support for partial results will be reworked in * future versions of camera service. This quirk will stop * working at that point; DO NOT USE without careful * consideration of future support. *
* * Optional - This value may be null on some devices. * * @hide */ public static final Key* How many output streams can be allocated at * the same time for each type of stream *
** Video snapshot with preview callbacks requires 3 * processed streams (preview, record, app callbacks) and * one JPEG stream (snapshot) *
*/ public static final Key* List of app-visible formats *
*/ public static final Key* The minimum frame duration that is supported * for each resolution in availableJpegSizes. Should * correspond to the frame duration when only that JPEG * stream is active and captured in a burst, with all * processing set to FAST *
** When multiple streams are configured, the minimum * frame duration will be >= max(individual stream min * durations) *
*/ public static final Key* The resolutions available for output from * the JPEG block. Listed as width x height *
*/ public static final Key* The maximum ratio between active area width * and crop region width, or between active area height and * crop region height, if the crop region height is larger * than width *
*/ public static final Key* The minimum frame duration that is supported * for each resolution in availableProcessedSizes. Should * correspond to the frame duration when only that processed * stream is active, with all processing set to * FAST *
** When multiple streams are configured, the minimum * frame duration will be >= max(individual stream min * durations) *
*/ public static final Key* The resolutions available for use with * processed output streams, such as YV12, NV12, and * platform opaque YUV/RGB streams to the GPU or video * encoders. Listed as width, height *
** The actual supported resolution list may be limited by * consumer end points for different use cases. For example, for * recording use case, the largest supported resolution may be * limited by max supported size from encoder, for preview use * case, the largest supported resolution may be limited by max * resolution SurfaceTexture/SurfaceView can support. *
*/ public static final Key* Area of raw data which corresponds to only * active pixels; smaller or equal to * pixelArraySize. *
*/ public static final Key* Range of valid sensitivities *
*/ public static final Key* Range of valid exposure * times *
*/ public static final Key* Maximum possible frame duration (minimum frame * rate) *
** Minimum duration is a function of resolution, * processing settings. See * android.scaler.availableProcessedMinDurations * android.scaler.availableJpegMinDurations * android.scaler.availableRawMinDurations *
*/ public static final Key* The physical dimensions of the full pixel * array *
** Needed for FOV calculation for old API *
*/ public static final Key* Gain factor from electrons to raw units when * ISO=100 *
* * Optional - This value may be null on some devices. * * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_FULL HARDWARE_LEVEL_FULL} - * Present on all devices that report being FULL level hardware devices in the * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL HARDWARE_LEVEL} key. */ public static final Key* Maximum sensitivity that is implemented * purely through analog gain *
** For android.sensor.sensitivity values less than or * equal to this, all applied gain must be analog. For * values above this, it can be a mix of analog and * digital *
* * Optional - This value may be null on some devices. * * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_FULL HARDWARE_LEVEL_FULL} - * Present on all devices that report being FULL level hardware devices in the * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL HARDWARE_LEVEL} key. */ public static final Key* Clockwise angle through which the output * image needs to be rotated to be upright on the device * screen in its native orientation. Also defines the * direction of rolling shutter readout, which is from top * to bottom in the sensor's coordinate system *
*/ public static final Key* Which face detection modes are available, * if any *
** OFF means face detection is disabled, it must * be included in the list. *
* SIMPLE means the device supports the * android.statistics.faceRectangles and * android.statistics.faceScores outputs. *
* FULL means the device additionally supports the * android.statistics.faceIds and * android.statistics.faceLandmarks outputs. *
*/ public static final Key* Maximum number of simultaneously detectable * faces *
*/ public static final Key* Maximum number of supported points in the * tonemap curve *
*/ public static final Key* A list of camera LEDs that are available on this system. *
* @see #LED_AVAILABLE_LEDS_TRANSMIT * * @hide */ public static final Key* The camera 3 HAL device can implement one of two possible * operational modes; limited and full. Full support is * expected from new higher-end devices. Limited mode has * hardware requirements roughly in line with those for a * camera HAL device v1 implementation, and is expected from * older or inexpensive devices. Full is a strict superset of * limited, and they share the same essential operational flow. *
* For full details refer to "S3. Operational Modes" in camera3.h *
* @see #INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED * @see #INFO_SUPPORTED_HARDWARE_LEVEL_FULL */ public static final Key