CameraBurstCaptureCallback.java
/*
* Copyright 2019 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 androidx.camera.camera2.internal;
import android.hardware.camera2.CameraCaptureSession;
import android.hardware.camera2.CaptureFailure;
import android.hardware.camera2.CaptureRequest;
import android.hardware.camera2.CaptureResult;
import android.hardware.camera2.TotalCaptureResult;
import android.os.Build;
import android.view.Surface;
import androidx.annotation.NonNull;
import androidx.annotation.RequiresApi;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* A callback object for tracking the progress of a capture request submitted to the camera device.
*
* <p>Note this class is not thread-safe and its methods should only be invoked from the single
* thread.
*/
class CameraBurstCaptureCallback extends CameraCaptureSession.CaptureCallback {
final Map<CaptureRequest, List<CameraCaptureSession.CaptureCallback>> mCallbackMap;
CameraBurstCaptureCallback() {
mCallbackMap = new HashMap<>();
}
@RequiresApi(api = Build.VERSION_CODES.N)
@Override
public void onCaptureBufferLost(
@NonNull CameraCaptureSession session, @NonNull CaptureRequest request,
@NonNull Surface surface, long frame) {
for (CameraCaptureSession.CaptureCallback callback : getCallbacks(request)) {
callback.onCaptureBufferLost(session, request, surface, frame);
}
}
@Override
public void onCaptureCompleted(@NonNull CameraCaptureSession session,
@NonNull CaptureRequest request, @NonNull TotalCaptureResult result) {
for (CameraCaptureSession.CaptureCallback callback : getCallbacks(request)) {
callback.onCaptureCompleted(session, request, result);
}
}
@Override
public void onCaptureFailed(@NonNull CameraCaptureSession session,
@NonNull CaptureRequest request, @NonNull CaptureFailure failure) {
for (CameraCaptureSession.CaptureCallback callback : getCallbacks(request)) {
callback.onCaptureFailed(session, request, failure);
}
}
@Override
public void onCaptureProgressed(
@NonNull CameraCaptureSession session,
@NonNull CaptureRequest request, @NonNull
CaptureResult partialResult) {
for (CameraCaptureSession.CaptureCallback callback : getCallbacks(request)) {
callback.onCaptureProgressed(session, request, partialResult);
}
}
@Override
public void onCaptureStarted(
@NonNull CameraCaptureSession session,
@NonNull CaptureRequest request,
long timestamp,
long frameNumber) {
for (CameraCaptureSession.CaptureCallback callback : getCallbacks(request)) {
callback.onCaptureStarted(session, request, timestamp, frameNumber);
}
}
@Override
public void onCaptureSequenceAborted(
@NonNull CameraCaptureSession session, int sequenceId) {
// No-op.
}
@Override
public void onCaptureSequenceCompleted(
@NonNull CameraCaptureSession session, int sequenceId, long frameNumber) {
// No-op.
}
private List<CameraCaptureSession.CaptureCallback> getCallbacks(CaptureRequest request) {
List<CameraCaptureSession.CaptureCallback> callbacks = mCallbackMap.get(request);
return callbacks != null
? callbacks : Collections.<CameraCaptureSession.CaptureCallback>emptyList();
}
/**
* This method is not thread-safe and should be invoked on the same thread only.
*/
void addCamera2Callbacks(CaptureRequest captureRequest,
List<CameraCaptureSession.CaptureCallback> captureCallbacks) {
List<CameraCaptureSession.CaptureCallback> existingCallbacks =
mCallbackMap.get(captureRequest);
if (existingCallbacks != null) {
List<CameraCaptureSession.CaptureCallback> totalCallbacks =
new ArrayList<>(captureCallbacks.size() + existingCallbacks.size());
totalCallbacks.addAll(captureCallbacks);
totalCallbacks.addAll(existingCallbacks);
mCallbackMap.put(captureRequest, totalCallbacks);
} else {
mCallbackMap.put(captureRequest, captureCallbacks);
}
}
}