/*
* Copyright (C) 2014 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.os.Handler;
import java.util.List;
/**
* A configured capture session for a {@link CameraDevice}, used for capturing
* images from the camera.
*
* <p>A CameraCaptureSession is created by providing a set of target output surfaces to
* {@link CameraDevice#createCaptureSession createCaptureSession}. Once created, the session is
* active until a new session is created by the camera device, or the camera device is closed.</p>
*
* <p>Creating a session is an expensive operation and can take several hundred milliseconds, since
* it requires configuring the camera device's internal pipelines and allocating memory buffers for
* sending images to the desired targets. Therefore the setup is done asynchronously, and
* {@link CameraDevice#createCaptureSession createCaptureSession} will send the ready-to-use
* CameraCaptureSession to the provided listener's
* {@link CameraCaptureSession.StateCallback#onConfigured onConfigured} callback. If configuration
* cannot be completed, then the
* {@link CameraCaptureSession.StateCallback#onConfigureFailed onConfigureFailed} is called, and the
* session will not become active.</p>
*<!--
* <p>Any capture requests (repeating or non-repeating) submitted before the session is ready will
* be queued up and will begin capture once the session becomes ready. In case the session cannot be
* configured and {@link StateCallback#onConfigureFailed onConfigureFailed} is called, all queued
* capture requests are discarded.</p>
*-->
* <p>If a new session is created by the camera device, then the previous session is closed, and its
* associated {@link StateCallback#onClosed onClosed} callback will be invoked. All
* of the session methods will throw an IllegalStateException if called once the session is
* closed.</p>
*
* <p>A closed session clears any repeating requests (as if {@link #stopRepeating} had been called),
* but will still complete all of its in-progress capture requests as normal, before a newly
* created session takes over and reconfigures the camera device.</p>
*/
public abstract class CameraCaptureSession implements AutoCloseable {
/**
* Get the camera device that this session is created for.
*/
public abstract CameraDevice getDevice();
/**
* <p>Submit a request for an image to be captured by the camera device.</p>
*
* <p>The request defines all the parameters for capturing the single image,
* including sensor, lens, flash, and post-processing settings.</p>
*
* <p>Each request will produce one {@link CaptureResult} and produce new frames for one or more
* target Surfaces, set with the CaptureRequest builder's
* {@link CaptureRequest.Builder#addTarget} method. The target surfaces (set with
* {@link CaptureRequest.Builder#addTarget}) must be a subset of the surfaces provided when this
* capture session was created.</p>
*
* <p>Multiple requests can be in progress at once. They are processed in
* first-in, first-out order, with minimal delays between each
* capture. Requests submitted through this method have higher priority than
* those submitted through {@link #setRepeatingRequest} or
* {@link #setRepeatingBurst}, and will be processed as soon as the current
* repeat/repeatBurst processing completes.</p>
*
* @param request the settings for this capture
* @param listener The callback object to notify once this request has been
* processed. If null, no metadata will be produced for this capture,
* although image data will still be produced.
* @param handler the handler on which the listener should be invoked, or
* {@code null} to use the current thread's {@link android.os.Looper
* looper}.
*
* @return int A unique capture sequence ID used by
* {@link CaptureCallback#onCaptureSequenceCompleted}.
*
* @throws CameraAccessException if the camera device is no longer connected or has
* encountered a fatal error
* @throws IllegalStateException if this session is no longer active, either because the session
* was explicitly closed, a new session has been created
* or the camera device has been closed.
* @throws IllegalArgumentException if the request targets no Surfaces or Surfaces that are not
* configured as outputs for this session. Or if the handler is
* null, the listener is not null, and the calling thread has
* no looper.
*
* @see #captureBurst
* @see #setRepeatingRequest
* @see #setRepeatingBurst
* @see #abortCaptures
*/
public abstract int capture(CaptureRequest request, CaptureCallback listener, Handler handler)
throws CameraAccessException;
/**
* Submit a list of requests to be captured in sequence as a burst. The
* burst will be captured in the minimum amount of time possible, and will
* not be interleaved with requests submitted by other capture or repeat
* calls.
*
* <p>The requests will be captured in order, each capture producing one {@link CaptureResult}
* and image buffers for one or more target {@link android.view.Surface surfaces}. The target
* surfaces (set with {@link CaptureRequest.Builder#addTarget}) must be a subset of the surfaces
* provided when this capture session was created.</p>
*
* <p>The main difference between this method and simply calling
* {@link #capture} repeatedly is that this method guarantees that no
* other requests will be interspersed with the burst.</p>
*
* @param requests the list of settings for this burst capture
* @param listener The callback object to notify each time one of the
* requests in the burst has been processed. If null, no metadata will be
* produced for any requests in this burst, although image data will still
* be produced.
* @param handler the handler on which the listener should be invoked, or
* {@code null} to use the current thread's {@link android.os.Looper
* looper}.
*
* @return int A unique capture sequence ID used by
* {@link CaptureCallback#onCaptureSequenceCompleted}.
*
* @throws CameraAccessException if the camera device is no longer connected or has
* encountered a fatal error
* @throws IllegalStateException if this session is no longer active, either because the session
* was explicitly closed, a new session has been created
* or the camera device has been closed.
* @throws IllegalArgumentException If the requests target no Surfaces or Surfaces not currently
* configured as outputs. Or if the handler is null, the
* listener is not null, and the calling thread has no looper.
*
* @see #capture
* @see #setRepeatingRequest
* @see #setRepeatingBurst
* @see #abortCaptures
*/
public abstract int captureBurst(List<CaptureRequest> requests, CaptureCallback listener,
Handler handler) throws CameraAccessException;
/**
* Request endlessly repeating capture of images by this capture session.
*
* <p>With this method, the camera device will continually capture images
* using the settings in the provided {@link CaptureRequest}, at the maximum
* rate possible.</p>
*
* <p>Repeating requests are a simple way for an application to maintain a
* preview or other continuous stream of frames, without having to
* continually submit identical requests through {@link #capture}.</p>
*
* <p>Repeat requests have lower priority than those submitted
* through {@link #capture} or {@link #captureBurst}, so if
* {@link #capture} is called when a repeating request is active, the
* capture request will be processed before any further repeating
* requests are processed.<p>
*
* <p>To stop the repeating capture, call {@link #stopRepeating}. Calling
* {@link #abortCaptures} will also clear the request.</p>
*
* <p>Calling this method will replace any earlier repeating request or
* burst set up by this method or {@link #setRepeatingBurst}, although any
* in-progress burst will be completed before the new repeat request will be
* used.</p>
*
* @param request the request to repeat indefinitely
* @param listener The callback object to notify every time the
* request finishes processing. If null, no metadata will be
* produced for this stream of requests, although image data will
* still be produced.
* @param handler the handler on which the listener should be invoked, or
* {@code null} to use the current thread's {@link android.os.Looper
* looper}.
*
* @return int A unique capture sequence ID used by
* {@link CaptureCallback#onCaptureSequenceCompleted}.
*
* @throws CameraAccessException if the camera device is no longer connected or has
* encountered a fatal error
* @throws IllegalStateException if this session is no longer active, either because the session
* was explicitly closed, a new session has been created
* or the camera device has been closed.
* @throws IllegalArgumentException If the requests reference no Surfaces or Surfaces that are
* not currently configured as outputs. Or if the handler is
* null, the listener is not null, and the calling thread has
* no looper. Or if no requests were passed in.
*
* @see #capture
* @see #captureBurst
* @see #setRepeatingBurst
* @see #stopRepeating
* @see #abortCaptures
*/
public abstract int setRepeatingRequest(CaptureRequest request, CaptureCallback listener,
Handler handler) throws CameraAccessException;
/**
* <p>Request endlessly repeating capture of a sequence of images by this
* capture session.</p>
*
* <p>With this method, the camera device will continually capture images,
* cycling through the settings in the provided list of
* {@link CaptureRequest CaptureRequests}, at the maximum rate possible.</p>
*
* <p>If a request is submitted through {@link #capture} or
* {@link #captureBurst}, the current repetition of the request list will be
* completed before the higher-priority request is handled. This guarantees
* that the application always receives a complete repeat burst captured in
* minimal time, instead of bursts interleaved with higher-priority
* captures, or incomplete captures.</p>
*
* <p>Repeating burst requests are a simple way for an application to
* maintain a preview or other continuous stream of frames where each
* request is different in a predicatable way, without having to continually
* submit requests through {@link #captureBurst}.</p>
*
* <p>To stop the repeating capture, call {@link #stopRepeating}. Any
* ongoing burst will still be completed, however. Calling
* {@link #abortCaptures} will also clear the request.</p>
*
* <p>Calling this method will replace a previously-set repeating request or
* burst set up by this method or {@link #setRepeatingRequest}, although any
* in-progress burst will be completed before the new repeat burst will be
* used.</p>
*
* @param requests the list of requests to cycle through indefinitely
* @param listener The callback object to notify each time one of the
* requests in the repeating bursts has finished processing. If null, no
* metadata will be produced for this stream of requests, although image
* data will still be produced.
* @param handler the handler on which the listener should be invoked, or
* {@code null} to use the current thread's {@link android.os.Looper
* looper}.
*
* @return int A unique capture sequence ID used by
* {@link CaptureCallback#onCaptureSequenceCompleted}.
*
* @throws CameraAccessException if the camera device is no longer connected or has
* encountered a fatal error
* @throws IllegalStateException if this session is no longer active, either because the session
* was explicitly closed, a new session has been created
* or the camera device has been closed.
* @throws IllegalArgumentException If the requests reference no Surfaces or Surfaces not
* currently configured as outputs. Or if the handler is null,
* the listener is not null, and the calling thread has no
* looper. Or if no requests were passed in.
*
* @see #capture
* @see #captureBurst
* @see #setRepeatingRequest
* @see #stopRepeating
* @see #abortCaptures
*/
public abstract int setRepeatingBurst(List<CaptureRequest> requests, CaptureCallback listener,
Handler handler) throws CameraAccessException;
/**
* <p>Cancel any ongoing repeating capture set by either
* {@link #setRepeatingRequest setRepeatingRequest} or
* {@link #setRepeatingBurst}. Has no effect on requests submitted through
* {@link #capture capture} or {@link #captureBurst captureBurst}.</p>
*
* <p>Any currently in-flight captures will still complete, as will any burst that is
* mid-capture. To ensure that the device has finished processing all of its capture requests
* and is in ready state, wait for the {@link StateCallback#onReady} callback after
* calling this method.</p>
*
* @throws CameraAccessException if the camera device is no longer connected or has
* encountered a fatal error
* @throws IllegalStateException if this session is no longer active, either because the session
* was explicitly closed, a new session has been created
* or the camera device has been closed.
*
* @see #setRepeatingRequest
* @see #setRepeatingBurst
* @see StateCallback#onIdle
*/
public abstract void stopRepeating() throws CameraAccessException;
/**
* Discard all captures currently pending and in-progress as fast as possible.
*
* <p>The camera device will discard all of its current work as fast as possible. Some in-flight
* captures may complete successfully and call {@link CaptureCallback#onCaptureCompleted}, while
* others will trigger their {@link CaptureCallback#onCaptureFailed} callbacks. If a repeating
* request or a repeating burst is set, it will be cleared.</p>
*
* <p>This method is the fastest way to switch the camera device to a new session with
* {@link CameraDevice#createCaptureSession}, at the cost of discarding in-progress work. It
* must be called before the new session is created. Once all pending requests are either
* completed or thrown away, the {@link StateCallback#onReady} callback will be called,
* if the session has not been closed. Otherwise, the {@link StateCallback#onClosed}
* callback will be fired when a new session is created by the camera device.</p>
*
* <p>Cancelling will introduce at least a brief pause in the stream of data from the camera
* device, since once the camera device is emptied, the first new request has to make it through
* the entire camera pipeline before new output buffers are produced.</p>
*
* <p>This means that using {@code abortCaptures()} to simply remove pending requests is not
* recommended; it's best used for quickly switching output configurations, or for cancelling
* long in-progress requests (such as a multi-second capture).</p>
*
* @throws CameraAccessException if the camera device is no longer connected or has
* encountered a fatal error
* @throws IllegalStateException if this session is no longer active, either because the session
* was explicitly closed, a new session has been created
* or the camera device has been closed.
*
* @see #setRepeatingRequest
* @see #setRepeatingBurst
* @see CameraDevice#createCaptureSession
*/
public abstract void abortCaptures() throws CameraAccessException;
/**
* Close this capture session asynchronously.
*
* <p>Closing a session frees up the target output Surfaces of the session for reuse with either
* a new session, or to other APIs that can draw to Surfaces.</p>
*
* <p>Note that creating a new capture session with {@link CameraDevice#createCaptureSession}
* will close any existing capture session automatically, and call the older session listener's
* {@link StateCallback#onClosed} callback. Using {@link CameraDevice#createCaptureSession}
* directly without closing is the recommended approach for quickly switching to a new session,
* since unchanged target outputs can be reused more efficiently.</p>
*
* <p>Once a session is closed, all methods on it will throw an IllegalStateException, and any
* repeating requests or bursts are stopped (as if {@link #stopRepeating()} was called).
* However, any in-progress capture requests submitted to the session will be completed as
* normal; once all captures have completed and the session has been torn down,
* {@link StateCallback#onClosed} will be called.</p>
*
* <p>Closing a session is idempotent; closing more than once has no effect.</p>
*/
@Override
public abstract void close();
/**
* A callback object for receiving updates about the state of a camera capture session.
*
*/
public static abstract class StateCallback {
/**
* This method is called when the camera device has finished configuring itself, and the
* session can start processing capture requests.
*
* <p>If there are capture requests already queued with the session, they will start
* processing once this callback is invoked, and the session will call {@link #onActive}
* right after this callback is invoked.</p>
*
* <p>If no capture requests have been submitted, then the session will invoke
* {@link #onReady} right after this callback.</p>
*
* <p>If the camera device configuration fails, then {@link #onConfigureFailed} will
* be invoked instead of this callback.</p>
*
* @param session the session returned by {@link CameraDevice#createCaptureSession}
*/
public abstract void onConfigured(CameraCaptureSession session);
/**
* This method is called if the session cannot be configured as requested.
*
* <p>This can happen if the set of requested outputs contains unsupported sizes,
* or too many outputs are requested at once.</p>
*
* <p>The session is considered to be closed, and all methods called on it after this
* callback is invoked will throw an IllegalStateException. Any capture requests submitted
* to the session prior to this callback will be discarded and will not produce any
* callbacks on their listeners.</p>
*
* @param session the session returned by {@link CameraDevice#createCaptureSession}
*/
public abstract void onConfigureFailed(CameraCaptureSession session);
/**
* This method is called every time the session has no more capture requests to process.
*
* <p>During the creation of a new session, this callback is invoked right after
* {@link #onConfigured} if no capture requests were submitted to the session prior to it
* completing configuration.</p>
*
* <p>Otherwise, this callback will be invoked any time the session finishes processing
* all of its active capture requests, and no repeating request or burst is set up.</p>
*
* @param session the session returned by {@link CameraDevice#createCaptureSession}
*
*/
public void onReady(CameraCaptureSession session) {
// default empty implementation
}
/**
* This method is called when the session starts actively processing capture requests.
*
* <p>If capture requests are submitted prior to {@link #onConfigured} being called,
* then the session will start processing those requests immediately after the callback,
* and this method will be immediately called after {@link #onConfigured}.
*
* <p>If the session runs out of capture requests to process and calls {@link #onReady},
* then this callback will be invoked again once new requests are submitted for capture.</p>
*
* @param session the session returned by {@link CameraDevice#createCaptureSession}
*/
public void onActive(CameraCaptureSession session) {
// default empty implementation
}
/**
* This method is called when the session is closed.
*
* <p>A session is closed when a new session is created by the parent camera device,
* or when the parent camera device is closed (either by the user closing the device,
* or due to a camera device disconnection or fatal error).</p>
*
* <p>Once a session is closed, all methods on it will throw an IllegalStateException, and
* any repeating requests or bursts are stopped (as if {@link #stopRepeating()} was called).
* However, any in-progress capture requests submitted to the session will be completed
* as normal.</p>
*
* @param session the session returned by {@link CameraDevice#createCaptureSession}
*/
public void onClosed(CameraCaptureSession session) {
// default empty implementation
}
}
/**
* Temporary for migrating to Callback naming
* @hide
*/
public static abstract class StateListener extends StateCallback {
}
/**
* <p>A callback object for tracking the progress of a {@link CaptureRequest} submitted to the
* camera device.</p>
*
* <p>This callback is invoked when a request triggers a capture to start,
* and when the capture is complete. In case on an error capturing an image,
* the error method is triggered instead of the completion method.</p>
*
* @see #capture
* @see #captureBurst
* @see #setRepeatingRequest
* @see #setRepeatingBurst
*/
public static abstract class CaptureCallback {
/**
* This constant is used to indicate that no images were captured for
* the request.
*
* @hide
*/
public static final int NO_FRAMES_CAPTURED = -1;
/**
* This method is called when the camera device has started capturing
* the output image for the request, at the beginning of image exposure.
*
* <p>This callback is invoked right as the capture of a frame begins,
* so it is the most appropriate time for playing a shutter sound,
* or triggering UI indicators of capture.</p>
*
* <p>The request that is being used for this capture is provided, along
* with the actual timestamp for the start of exposure. This timestamp
* matches the timestamp that will be included in
* {@link CaptureResult#SENSOR_TIMESTAMP the result timestamp field},
* and in the buffers sent to each output Surface. These buffer
* timestamps are accessible through, for example,
* {@link android.media.Image#getTimestamp() Image.getTimestamp()} or
* {@link android.graphics.SurfaceTexture#getTimestamp()}.
* The frame number included is equal to the frame number that will be included in
* {@link CaptureResult#getFrameNumber}.</p>
*
* <p>For the simplest way to play a shutter sound camera shutter or a
* video recording start/stop sound, see the
* {@link android.media.MediaActionSound} class.</p>
*
* <p>The default implementation of this method does nothing.</p>
*
* @param session the session returned by {@link CameraDevice#createCaptureSession}
* @param request the request for the capture that just begun
* @param timestamp the timestamp at start of capture, in nanoseconds.
* @param frameNumber the frame number for this capture
*
* @see android.media.MediaActionSound
*/
public void onCaptureStarted(CameraCaptureSession session,
CaptureRequest request, long timestamp, long frameNumber) {
// Temporary trampoline for API change transition
onCaptureStarted(session, request, timestamp);
}
/**
* Temporary for API change transition
* @hide
*/
public void onCaptureStarted(CameraCaptureSession session,
CaptureRequest request, long timestamp) {
// default empty implementation
}
/**
* This method is called when some results from an image capture are
* available.
*
* <p>The result provided here will contain some subset of the fields of
* a full result. Multiple onCapturePartial calls may happen per
* capture; a given result field will only be present in one partial
* capture at most. The final onCaptureCompleted call will always
* contain all the fields, whether onCapturePartial was called or
* not.</p>
*
* <p>The default implementation of this method does nothing.</p>
*
* @param session the session returned by {@link CameraDevice#createCaptureSession}
* @param request The request that was given to the CameraDevice
* @param result The partial output metadata from the capture, which
* includes a subset of the CaptureResult fields.
*
* @see #capture
* @see #captureBurst
* @see #setRepeatingRequest
* @see #setRepeatingBurst
*
* @hide
*/
public void onCapturePartial(CameraCaptureSession session,
CaptureRequest request, CaptureResult result) {
// default empty implementation
}
/**
* This method is called when an image capture makes partial forward progress; some
* (but not all) results from an image capture are available.
*
* <p>The result provided here will contain some subset of the fields of
* a full result. Multiple {@link #onCaptureProgressed} calls may happen per
* capture; a given result field will only be present in one partial
* capture at most. The final {@link #onCaptureCompleted} call will always
* contain all the fields (in particular, the union of all the fields of all
* the partial results composing the total result).</p>
*
* <p>For each request, some result data might be available earlier than others. The typical
* delay between each partial result (per request) is a single frame interval.
* For performance-oriented use-cases, applications should query the metadata they need
* to make forward progress from the partial results and avoid waiting for the completed
* result.</p>
*
* <p>Each request will generate at least {@code 1} partial results, and at most
* {@link CameraCharacteristics#REQUEST_PARTIAL_RESULT_COUNT} partial results.</p>
*
* <p>Depending on the request settings, the number of partial results per request
* will vary, although typically the partial count could be the same as long as the
* camera device subsystems enabled stay the same.</p>
*
* <p>The default implementation of this method does nothing.</p>
*
* @param session the session returned by {@link CameraDevice#createCaptureSession}
* @param request The request that was given to the CameraDevice
* @param partialResult The partial output metadata from the capture, which
* includes a subset of the {@link TotalCaptureResult} fields.
*
* @see #capture
* @see #captureBurst
* @see #setRepeatingRequest
* @see #setRepeatingBurst
*/
public void onCaptureProgressed(CameraCaptureSession session,
CaptureRequest request, CaptureResult partialResult) {
// default empty implementation
}
/**
* This method is called when an image capture has fully completed and all the
* result metadata is available.
*
* <p>This callback will always fire after the last {@link #onCaptureProgressed};
* in other words, no more partial results will be delivered once the completed result
* is available.</p>
*
* <p>For performance-intensive use-cases where latency is a factor, consider
* using {@link #onCaptureProgressed} instead.</p>
*
* <p>The default implementation of this method does nothing.</p>
*
* @param session the session returned by {@link CameraDevice#createCaptureSession}
* @param request The request that was given to the CameraDevice
* @param result The total output metadata from the capture, including the
* final capture parameters and the state of the camera system during
* capture.
*
* @see #capture
* @see #captureBurst
* @see #setRepeatingRequest
* @see #setRepeatingBurst
*/
public void onCaptureCompleted(CameraCaptureSession session,
CaptureRequest request, TotalCaptureResult result) {
// default empty implementation
}
/**
* This method is called instead of {@link #onCaptureCompleted} when the
* camera device failed to produce a {@link CaptureResult} for the
* request.
*
* <p>Other requests are unaffected, and some or all image buffers from
* the capture may have been pushed to their respective output
* streams.</p>
*
* <p>The default implementation of this method does nothing.</p>
*
* @param session
* The session returned by {@link CameraDevice#createCaptureSession}
* @param request
* The request that was given to the CameraDevice
* @param failure
* The output failure from the capture, including the failure reason
* and the frame number.
*
* @see #capture
* @see #captureBurst
* @see #setRepeatingRequest
* @see #setRepeatingBurst
*/
public void onCaptureFailed(CameraCaptureSession session,
CaptureRequest request, CaptureFailure failure) {
// default empty implementation
}
/**
* This method is called independently of the others in CaptureCallback,
* when a capture sequence finishes and all {@link CaptureResult}
* or {@link CaptureFailure} for it have been returned via this listener.
*
* <p>In total, there will be at least one result/failure returned by this listener
* before this callback is invoked. If the capture sequence is aborted before any
* requests have been processed, {@link #onCaptureSequenceAborted} is invoked instead.</p>
*
* <p>The default implementation does nothing.</p>
*
* @param session
* The session returned by {@link CameraDevice#createCaptureSession}
* @param sequenceId
* A sequence ID returned by the {@link #capture} family of functions.
* @param frameNumber
* The last frame number (returned by {@link CaptureResult#getFrameNumber}
* or {@link CaptureFailure#getFrameNumber}) in the capture sequence.
*
* @see CaptureResult#getFrameNumber()
* @see CaptureFailure#getFrameNumber()
* @see CaptureResult#getSequenceId()
* @see CaptureFailure#getSequenceId()
* @see #onCaptureSequenceAborted
*/
public void onCaptureSequenceCompleted(CameraCaptureSession session,
int sequenceId, long frameNumber) {
// default empty implementation
}
/**
* This method is called independently of the others in CaptureCallback,
* when a capture sequence aborts before any {@link CaptureResult}
* or {@link CaptureFailure} for it have been returned via this listener.
*
* <p>Due to the asynchronous nature of the camera device, not all submitted captures
* are immediately processed. It is possible to clear out the pending requests
* by a variety of operations such as {@link CameraCaptureSession#stopRepeating} or
* {@link CameraCaptureSession#abortCaptures}. When such an event happens,
* {@link #onCaptureSequenceCompleted} will not be called.</p>
*
* <p>The default implementation does nothing.</p>
*
* @param session
* The session returned by {@link CameraDevice#createCaptureSession}
* @param sequenceId
* A sequence ID returned by the {@link #capture} family of functions.
*
* @see CaptureResult#getFrameNumber()
* @see CaptureFailure#getFrameNumber()
* @see CaptureResult#getSequenceId()
* @see CaptureFailure#getSequenceId()
* @see #onCaptureSequenceCompleted
*/
public void onCaptureSequenceAborted(CameraCaptureSession session,
int sequenceId) {
// default empty implementation
}
}
/**
* Temporary for migrating to Callback naming
* @hide
*/
public static abstract class CaptureListener extends CaptureCallback {
}
}
|
