/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.camera.settings;
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import android.content.ContentResolver;
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import android.content.Context;
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import com.android.camera.settings.SettingsUtil.CameraDeviceSelector;
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import com.android.camera.settings.SettingsUtil.SelectedVideoQualities;
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import com.android.camera.util.GservicesHelper;
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import com.android.camera.util.Size;
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import com.android.ex.camera2.portability.CameraAgentFactory;
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import com.android.ex.camera2.portability.CameraDeviceInfo;
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import com.google.common.base.Optional;
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import java.util.ArrayList;
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import java.util.List;
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import javax.annotation.Nonnull;
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import javax.annotation.ParametersAreNonnullByDefault;
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/**
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* Loads the camera picture sizes that can be set by the user.
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* <p>
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* This class is compatible with pre-Lollipop since it uses the compatibility
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* layer to access the camera metadata.
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*/
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@ParametersAreNonnullByDefault
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public class PictureSizeLoader {
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/**
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* Holds the sizes for the back- and front cameras which will be available
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* to the user for selection form settings.
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*/
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@ParametersAreNonnullByDefault
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public static class PictureSizes {
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public final List<Size> backCameraSizes;
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public final List<Size> frontCameraSizes;
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public final List<Size> externalCameraSizes;
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public final Optional<SelectedVideoQualities> videoQualitiesBack;
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public final Optional<SelectedVideoQualities> videoQualitiesFront;
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public final Optional<SelectedVideoQualities> videoQualitiesExternal;
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PictureSizes(List<Size> backCameraSizes,
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List<Size> frontCameraSizes,
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List<Size> externalCameraSizes,
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Optional<SelectedVideoQualities> videoQualitiesBack,
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Optional<SelectedVideoQualities> videoQualitiesFront,
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Optional<SelectedVideoQualities> videoQualitiesExternal) {
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this.backCameraSizes = backCameraSizes;
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this.frontCameraSizes = frontCameraSizes;
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this.externalCameraSizes = externalCameraSizes;
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this.videoQualitiesBack = videoQualitiesBack;
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this.videoQualitiesFront = videoQualitiesFront;
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this.videoQualitiesExternal = videoQualitiesExternal;
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}
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}
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private final Context mContext;
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private final ContentResolver mContentResolver;
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private final CameraDeviceInfo mCameraDeviceInfo;
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private final boolean mCachedOnly;
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/**
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* Initializes a new picture size loader.
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* <p>
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* This constructor will default to using the camera devices if the size
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* values were not found in cache.
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*
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* @param context used to load caches sizes from preferences.
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*/
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public PictureSizeLoader(Context context) {
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this(context, false);
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}
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/**
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* Initializes a new picture size loader.
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*
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* @param context used to load caches sizes from preferences.
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* @param cachedOnly if set to true, this will only check the cache for
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* sizes. If the cache is empty, this will NOT attempt to open
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* the camera devices in order to obtain the sizes.
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*/
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public PictureSizeLoader(Context context, boolean cachedOnly) {
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mContext = context;
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mContentResolver = context.getContentResolver();
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mCameraDeviceInfo = CameraAgentFactory
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.getAndroidCameraAgent(context, CameraAgentFactory.CameraApi.API_1)
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.getCameraDeviceInfo();
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mCachedOnly = cachedOnly;
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}
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public void release(){
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CameraAgentFactory.recycle(CameraAgentFactory.CameraApi.API_1);
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}
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/**
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* Computes the list of picture sizes that should be displayed by settings.
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* <p>
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* For this it will open the camera devices to determine the available
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* sizes, if the sizes are not already cached. This is to be compatible with
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* devices running Camera API 1.
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* <p>
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* We then calculate the resolutions that should be available and in the end
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* filter it in case a resolution is on the blacklist for this device.
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*/
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public PictureSizes computePictureSizes() {
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List<Size> backCameraSizes = computeSizesForCamera(SettingsUtil.CAMERA_FACING_BACK);
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List<Size> frontCameraSizes = computeSizesForCamera(SettingsUtil.CAMERA_FACING_FRONT);
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List<Size> externalCameraSizes = computeSizesForCamera(SettingsUtil.CAMERA_FACING_EXTERNAL);
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Optional<SelectedVideoQualities> videoQualitiesBack =
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computeQualitiesForCamera(SettingsUtil.CAMERA_FACING_BACK);
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Optional<SelectedVideoQualities> videoQualitiesFront =
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computeQualitiesForCamera(SettingsUtil.CAMERA_FACING_FRONT);
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Optional<SelectedVideoQualities> videoQualitiesExternal =
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computeQualitiesForCamera(SettingsUtil.CAMERA_FACING_EXTERNAL);
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return new PictureSizes(backCameraSizes, frontCameraSizes, externalCameraSizes,
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videoQualitiesBack,
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videoQualitiesFront,
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videoQualitiesExternal);
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}
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private List<Size> computeSizesForCamera(CameraDeviceSelector facingSelector) {
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List<Size> sizes;
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int cameraId = SettingsUtil.getCameraId(mCameraDeviceInfo, facingSelector);
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if (cameraId >= 0) {
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if (mCachedOnly) {
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sizes = CameraPictureSizesCacher.getCachedSizesForCamera(cameraId, mContext)
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.orNull();
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} else {
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sizes = CameraPictureSizesCacher.getSizesForCamera(cameraId, mContext);
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}
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if (sizes != null) {
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sizes = ResolutionUtil
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.getDisplayableSizesFromSupported(sizes,
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facingSelector == SettingsUtil.CAMERA_FACING_BACK);
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String blacklisted = GservicesHelper
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.getBlacklistedResolutionsBack(mContentResolver);
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sizes = ResolutionUtil.filterBlackListedSizes(sizes, blacklisted);
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return sizes;
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}
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}
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return new ArrayList<>(0);
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}
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private Optional<SelectedVideoQualities> computeQualitiesForCamera(
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CameraDeviceSelector facingSelector) {
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int cameraId = SettingsUtil.getCameraId(mCameraDeviceInfo, facingSelector);
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if (cameraId >= 0) {
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// This is guaranteed not to be null/absent.
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return Optional.of(SettingsUtil.getSelectedVideoQualities(cameraId));
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}
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return Optional.absent();
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}
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}
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