/*
* 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.Arrays;
import java.util.List;
/**
* Different implementations of {@link CameraCaptureSession.CaptureCallback}.
*/
public final class Camera2CaptureCallbacks {
private Camera2CaptureCallbacks() {
}
/** Returns a session capture callback which does nothing. */
@NonNull
public static CameraCaptureSession.CaptureCallback createNoOpCallback() {
return new NoOpSessionCaptureCallback();
}
/** Returns a session capture callback which calls a list of other callbacks. */
static CameraCaptureSession.CaptureCallback createComboCallback(
List<CameraCaptureSession.CaptureCallback> callbacks) {
return new ComboSessionCaptureCallback(callbacks);
}
/** Returns a session capture callback which calls a list of other callbacks. */
@NonNull
public static CameraCaptureSession.CaptureCallback createComboCallback(
@NonNull CameraCaptureSession.CaptureCallback... callbacks) {
return createComboCallback(Arrays.asList(callbacks));
}
static final class NoOpSessionCaptureCallback
extends CameraCaptureSession.CaptureCallback {
@Override
public void onCaptureBufferLost(
@NonNull CameraCaptureSession session,
@NonNull CaptureRequest request,
@NonNull Surface surface,
long frame) {
}
@Override
public void onCaptureCompleted(
@NonNull CameraCaptureSession session, @NonNull CaptureRequest request,
@NonNull TotalCaptureResult result) {
}
@Override
public void onCaptureFailed(
@NonNull CameraCaptureSession session, @NonNull CaptureRequest request,
@NonNull CaptureFailure failure) {
}
@Override
public void onCaptureProgressed(
@NonNull CameraCaptureSession session,
@NonNull CaptureRequest request,
@NonNull CaptureResult partialResult) {
}
@Override
public void onCaptureSequenceAborted(@NonNull CameraCaptureSession session,
int sequenceId) {
}
@Override
public void onCaptureSequenceCompleted(
@NonNull CameraCaptureSession session, int sequenceId, long frame) {
}
@Override
public void onCaptureStarted(
@NonNull CameraCaptureSession session, @NonNull CaptureRequest request,
long timestamp, long frame) {
}
}
private static final class ComboSessionCaptureCallback
extends CameraCaptureSession.CaptureCallback {
private final List<CameraCaptureSession.CaptureCallback> mCallbacks = new ArrayList<>();
ComboSessionCaptureCallback(List<CameraCaptureSession.CaptureCallback> callbacks) {
for (CameraCaptureSession.CaptureCallback callback : callbacks) {
// A no-op callback doesn't do anything, so avoid adding it to the final list.
if (!(callback instanceof NoOpSessionCaptureCallback)) {
mCallbacks.add(callback);
}
}
}
@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 : mCallbacks) {
callback.onCaptureBufferLost(session, request, surface, frame);
}
}
@Override
public void onCaptureCompleted(
@NonNull CameraCaptureSession session, @NonNull CaptureRequest request,
@NonNull TotalCaptureResult result) {
for (CameraCaptureSession.CaptureCallback callback : mCallbacks) {
callback.onCaptureCompleted(session, request, result);
}
}
@Override
public void onCaptureFailed(
@NonNull CameraCaptureSession session, @NonNull CaptureRequest request,
@NonNull CaptureFailure failure) {
for (CameraCaptureSession.CaptureCallback callback : mCallbacks) {
callback.onCaptureFailed(session, request, failure);
}
}
@Override
public void onCaptureProgressed(
@NonNull CameraCaptureSession session, @NonNull CaptureRequest request,
@NonNull CaptureResult partialResult) {
for (CameraCaptureSession.CaptureCallback callback : mCallbacks) {
callback.onCaptureProgressed(session, request, partialResult);
}
}
@Override
public void onCaptureSequenceAborted(@NonNull CameraCaptureSession session,
int sequenceId) {
for (CameraCaptureSession.CaptureCallback callback : mCallbacks) {
callback.onCaptureSequenceAborted(session, sequenceId);
}
}
@Override
public void onCaptureSequenceCompleted(
@NonNull CameraCaptureSession session, int sequenceId, long frame) {
for (CameraCaptureSession.CaptureCallback callback : mCallbacks) {
callback.onCaptureSequenceCompleted(session, sequenceId, frame);
}
}
@Override
public void onCaptureStarted(
@NonNull CameraCaptureSession session, @NonNull CaptureRequest request,
long timestamp, long frame) {
for (CameraCaptureSession.CaptureCallback callback : mCallbacks) {
callback.onCaptureStarted(session, request, timestamp, frame);
}
}
}
}