FlashAvailabilityBufferUnderflowQuirk.java
/*
* Copyright 2022 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.compat.quirk;
import android.hardware.camera2.CameraCharacteristics;
import android.os.Build;
import android.util.Pair;
import androidx.annotation.NonNull;
import androidx.annotation.RequiresApi;
import androidx.camera.core.impl.Quirk;
import java.nio.BufferUnderflowException;
import java.util.HashSet;
import java.util.Locale;
import java.util.Set;
/**
* A quirk for devices that throw a
* {@link BufferUnderflowException} when querying the flash availability.
*
* <p>QuirkSummary
* Bug Id: 216667482
* Description: When attempting to retrieve the
* {@link CameraCharacteristics#FLASH_INFO_AVAILABLE} characteristic, a
* {@link BufferUnderflowException} is thrown. This is an undocumented exception
* on the {@link CameraCharacteristics#get(CameraCharacteristics.Key)} method,
* so this violates the API contract.
* Device(s): Spreadtrum devices including LEMFO LEMP and DM20C
*/
@RequiresApi(21) // TODO(b/200306659): Remove and replace with annotation on package-info.java
public class FlashAvailabilityBufferUnderflowQuirk implements Quirk {
private static final Set<Pair<String, String>> KNOWN_AFFECTED_MODELS = new HashSet<>();
static {
// Devices enumerated as Pair(Build.MANUFACTURER, Build.MODEL).
addAffectedDevice("sprd", "lemp");
addAffectedDevice("sprd", "DM20C");
}
private static void addAffectedDevice(@NonNull String manufacturer, @NonNull String model) {
KNOWN_AFFECTED_MODELS.add(new Pair<>(manufacturer.toLowerCase(Locale.US),
model.toLowerCase(Locale.US)));
}
static boolean load() {
return KNOWN_AFFECTED_MODELS.contains(new Pair<>(Build.MANUFACTURER.toLowerCase(Locale.US),
Build.MODEL.toLowerCase(Locale.US)));
}
}