NewPipe-app-android/app/src/main/java/org/schabi/newpipe/util/ListHelper.java

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package org.schabi.newpipe.util;
import static org.schabi.newpipe.extractor.ServiceList.YouTube;
import android.content.Context;
import android.content.SharedPreferences;
import android.content.res.Resources;
import android.net.ConnectivityManager;
import android.util.Pair;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.annotation.StringRes;
import androidx.core.content.ContextCompat;
import androidx.preference.PreferenceManager;
import org.schabi.newpipe.R;
import org.schabi.newpipe.extractor.MediaFormat;
import org.schabi.newpipe.extractor.stream.AudioStream;
import org.schabi.newpipe.extractor.stream.AudioTrackType;
import org.schabi.newpipe.extractor.stream.DeliveryMethod;
import org.schabi.newpipe.extractor.stream.Stream;
import org.schabi.newpipe.extractor.stream.VideoStream;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.Objects;
import java.util.Set;
import java.util.function.Predicate;
import java.util.stream.Collectors;
public final class ListHelper {
// Video format in order of quality. 0=lowest quality, n=highest quality
private static final List<MediaFormat> VIDEO_FORMAT_QUALITY_RANKING =
List.of(MediaFormat.v3GPP, MediaFormat.WEBM, MediaFormat.MPEG_4);
// Audio format in order of quality. 0=lowest quality, n=highest quality
private static final List<MediaFormat> AUDIO_FORMAT_QUALITY_RANKING =
List.of(MediaFormat.MP3, MediaFormat.WEBMA, MediaFormat.M4A);
// Audio format in order of efficiency. 0=least efficient, n=most efficient
private static final List<MediaFormat> AUDIO_FORMAT_EFFICIENCY_RANKING =
List.of(MediaFormat.MP3, MediaFormat.M4A, MediaFormat.WEBMA);
// Use a Set for better performance
private static final Set<String> HIGH_RESOLUTION_LIST = Set.of("1440p", "2160p");
// Audio track types in order of priority. 0=lowest, n=highest
private static final List<AudioTrackType> AUDIO_TRACK_TYPE_RANKING =
List.of(AudioTrackType.DESCRIPTIVE, AudioTrackType.DUBBED, AudioTrackType.ORIGINAL);
// Audio track types in order of priority when descriptive audio is preferred.
private static final List<AudioTrackType> AUDIO_TRACK_TYPE_RANKING_DESCRIPTIVE =
List.of(AudioTrackType.ORIGINAL, AudioTrackType.DUBBED, AudioTrackType.DESCRIPTIVE);
/**
* List of supported YouTube Itag ids.
* The original order is kept.
* @see {@link org.schabi.newpipe.extractor.services.youtube.ItagItem#ITAG_LIST}
*/
private static final List<Integer> SUPPORTED_ITAG_IDS =
List.of(
17, 36, // video v3GPP
18, 34, 35, 59, 78, 22, 37, 38, // video MPEG4
43, 44, 45, 46, // video webm
171, 172, 139, 140, 141, 249, 250, 251, // audio
160, 133, 134, 135, 212, 136, 298, 137, 299, 266, // video only
278, 242, 243, 244, 245, 246, 247, 248, 271, 272, 302, 303, 308, 313, 315
);
private ListHelper() { }
/**
* @param context Android app context
* @param videoStreams list of the video streams to check
* @return index of the video stream with the default index, -1 if `videoStreams` is empty
* @see #getDefaultResolutionIndex(String, String, MediaFormat, List)
*/
public static int getDefaultResolutionIndex(final Context context,
final List<VideoStream> videoStreams) {
final String defaultResolution = getPreferredResolutionOrCurrentLimit(context,
R.string.default_resolution_key, R.string.default_resolution_value);
return getDefaultResolutionWithDefaultFormat(context, defaultResolution, videoStreams);
}
/**
* @param context Android app context
* @param videoStreams list of the video streams to check
* @return index of the video stream with the default index, -1 if `videoStreams` is empty
* @see #getDefaultResolutionIndex(String, String, MediaFormat, List)
*/
public static int getPopupDefaultResolutionIndex(final Context context,
final List<VideoStream> videoStreams) {
final String defaultResolution = getPreferredResolutionOrCurrentLimit(context,
R.string.default_popup_resolution_key, R.string.default_popup_resolution_value);
return getDefaultResolutionWithDefaultFormat(context, defaultResolution, videoStreams);
}
public static int getDefaultAudioFormat(final Context context,
@NonNull final List<AudioStream> audioStreams) {
return getAudioIndexByHighestRank(audioStreams,
getAudioTrackComparator(context).thenComparing(getAudioFormatComparator(context)));
}
public static int getDefaultAudioTrackGroup(final Context context,
final List<List<AudioStream>> groupedAudioStreams) {
if (groupedAudioStreams == null || groupedAudioStreams.isEmpty()) {
return -1;
}
final Comparator<AudioStream> cmp = getAudioTrackComparator(context);
final List<AudioStream> highestRanked = groupedAudioStreams.stream()
.max((o1, o2) -> cmp.compare(o1.get(0), o2.get(0)))
.orElse(null);
return groupedAudioStreams.indexOf(highestRanked);
}
/** Get the index of the audio format to play in audioStreams.
* .
* @param context
* @param audioStreams
* @param trackId Try to find this #AudioStream.getAudioTrackId in the audioStreams & select it
* @return index to play, or -1 if audioStreams is empty.
*/
public static int getAudioFormatIndex(final Context context,
@NonNull final List<AudioStream> audioStreams,
@Nullable final String trackId) {
// if we were given a trackId, try to select that before going to the defaults.
if (trackId != null) {
for (int i = 0; i < audioStreams.size(); i++) {
final AudioStream s = audioStreams.get(i);
if (s.getAudioTrackId() != null
&& s.getAudioTrackId().equals(trackId)) {
return i;
}
}
}
return getDefaultAudioFormat(context, audioStreams);
}
/**
* Return a {@link Stream} list which uses the given delivery method from a {@link Stream}
* list.
*
* @param streamList the original {@link Stream stream} list
* @param deliveryMethod the {@link DeliveryMethod delivery method}
* @param <S> the item type's class that extends {@link Stream}
* @return a {@link Stream stream} list which uses the given delivery method
*/
@NonNull
public static <S extends Stream> List<S> getStreamsOfSpecifiedDelivery(
@Nullable final List<S> streamList,
final DeliveryMethod deliveryMethod) {
return getFilteredStreamList(streamList,
stream -> stream.getDeliveryMethod() == deliveryMethod);
}
/**
* Return a {@link Stream} list which only contains URL streams and non-torrent streams.
*
* @param streamList the original stream list
* @param <S> the item type's class that extends {@link Stream}
* @return a stream list which only contains URL streams and non-torrent streams
*/
@NonNull
public static <S extends Stream> List<S> getUrlAndNonTorrentStreams(
@Nullable final List<S> streamList) {
return getFilteredStreamList(streamList,
stream -> stream.isUrl() && stream.getDeliveryMethod() != DeliveryMethod.TORRENT);
}
/**
* Return a {@link Stream} list which only contains streams which can be played by the player.
*
* <p>
* Some formats are not supported, see {@link #SUPPORTED_ITAG_IDS} for more details.
* Torrent streams are also removed, because they cannot be retrieved, like OPUS streams using
* HLS as their delivery method, since they are not supported by ExoPlayer.
* </p>
*
* @param <S> the item type's class that extends {@link Stream}
* @param streamList the original stream list
* @param serviceId the service ID from which the streams' list comes from
* @return a stream list which only contains streams that can be played the player
*/
@NonNull
public static <S extends Stream> List<S> getPlayableStreams(
@Nullable final List<S> streamList, final int serviceId) {
final int youtubeServiceId = YouTube.getServiceId();
return getFilteredStreamList(streamList,
stream -> stream.getDeliveryMethod() != DeliveryMethod.TORRENT
&& (stream.getDeliveryMethod() != DeliveryMethod.HLS
|| stream.getFormat() != MediaFormat.OPUS)
&& (serviceId != youtubeServiceId
|| stream.getItagItem() == null
|| SUPPORTED_ITAG_IDS.contains(stream.getItagItem().id)));
}
/**
* Join the two lists of video streams (video_only and normal videos),
* and sort them according with default format chosen by the user.
*
* @param context the context to search for the format to give preference
* @param videoStreams the normal videos list
* @param videoOnlyStreams the video-only stream list
* @param ascendingOrder true -> smallest to greatest | false -> greatest to smallest
* @param preferVideoOnlyStreams if video-only streams should preferred when both video-only
* streams and normal video streams are available
* @return the sorted list
*/
@NonNull
public static List<VideoStream> getSortedStreamVideosList(
@NonNull final Context context,
@Nullable final List<VideoStream> videoStreams,
@Nullable final List<VideoStream> videoOnlyStreams,
final boolean ascendingOrder,
final boolean preferVideoOnlyStreams) {
final SharedPreferences preferences =
PreferenceManager.getDefaultSharedPreferences(context);
final boolean showHigherResolutions = preferences.getBoolean(
context.getString(R.string.show_higher_resolutions_key), false);
final MediaFormat defaultFormat = getDefaultFormat(context,
R.string.default_video_format_key, R.string.default_video_format_value);
return getSortedStreamVideosList(defaultFormat, showHigherResolutions, videoStreams,
videoOnlyStreams, ascendingOrder, preferVideoOnlyStreams);
}
/**
* Get a sorted list containing a set of default resolution info
* and additional resolution info if showHigherResolutions is true.
*
* @param resources the resources to get the resolutions from
* @param defaultResolutionKey the settings key of the default resolution
* @param additionalResolutionKey the settings key of the additional resolutions
* @param showHigherResolutions if higher resolutions should be included in the sorted list
* @return a sorted list containing the default and maybe additional resolutions
*/
public static List<String> getSortedResolutionList(
final Resources resources,
final int defaultResolutionKey,
final int additionalResolutionKey,
final boolean showHigherResolutions) {
final List<String> resolutions = new ArrayList<>(Arrays.asList(
resources.getStringArray(defaultResolutionKey)));
if (!showHigherResolutions) {
return resolutions;
}
final List<String> additionalResolutions = Arrays.asList(
resources.getStringArray(additionalResolutionKey));
// keep "best resolution" at the top
resolutions.addAll(1, additionalResolutions);
return resolutions;
}
public static boolean isHighResolutionSelected(final String selectedResolution,
final int additionalResolutionKey,
final Resources resources) {
return Arrays.asList(resources.getStringArray(
additionalResolutionKey))
.contains(selectedResolution);
}
/**
* Filter the list of audio streams and return a list with the preferred stream for
* each audio track. Streams are sorted with the preferred language in the first position.
*
* The following formats cannot be played and are thus skipped:
*
* <ul>
* <li>{@literal DeliveryMethod.TORRENT}
* <li>both {@literal DeliveryMethod.HLS} AND {@literal MediaFormat.OPUS}</li>
* </ul>
*
* @param context the context to search for the track to give preference
* @param audioStreams the list of audio streams
* @return the sorted, filtered list
*/
@NonNull
public static List<AudioStream> getFilteredAudioStreams(
@NonNull final Context context,
@NonNull final List<AudioStream> audioStreams) {
final List<AudioStream> result = audioStreams
.stream()
// remove torrents we cant play
.filter(stream ->
!(
// we cant play torrents
stream.getDeliveryMethod() == DeliveryMethod.TORRENT
// This format is not supported by ExoPlayer when returned as HLS streams,
// so we can't play streams using this format and this delivery method.
|| (stream.getDeliveryMethod() == DeliveryMethod.HLS
&& stream.getFormat() == MediaFormat.OPUS))
)
.collect(Collectors.groupingBy(
stream ->
// Streams grouped by their locale+audiotype
// (e.g. en+original, fr+dubbed)
new Pair<Locale, AudioTrackType>(
stream.getAudioLocale(),
stream.getAudioTrackType()
),
// from each list of grouped streams,
// we select the one that has the most fitting audio type & quality
Collectors.maxBy(getAudioFormatComparator(context))
))
.entrySet()
.stream()
// get streams and remove bins that dont contain streams
.flatMap(e -> e.getValue().stream())
// sort the preferred audio stream last
.sorted(getAudioTrackComparator(context))
.collect(Collectors.toList());
return result;
}
/**
* Group the list of audioStreams by their track ID and sort the resulting list by track name.
*
* @param context app context to get track names for sorting
* @param audioStreams list of audio streams
* @return list of audio streams lists representing individual tracks
*/
public static List<List<AudioStream>> getGroupedAudioStreams(
@NonNull final Context context,
@Nullable final List<AudioStream> audioStreams) {
if (audioStreams == null) {
return Collections.emptyList();
}
final HashMap<String, List<AudioStream>> collectedStreams = new HashMap<>();
for (final AudioStream stream : audioStreams) {
final String trackId = Objects.toString(stream.getAudioTrackId(), "");
if (collectedStreams.containsKey(trackId)) {
collectedStreams.get(trackId).add(stream);
} else {
final List<AudioStream> list = new ArrayList<>();
list.add(stream);
collectedStreams.put(trackId, list);
}
}
// Filter unknown audio tracks if there are multiple tracks
if (collectedStreams.size() > 1) {
collectedStreams.remove("");
}
// Sort tracks alphabetically, sort track streams by quality
final Comparator<AudioStream> nameCmp = getAudioTrackNameComparator(context);
final Comparator<AudioStream> formatCmp = getAudioFormatComparator(context);
return collectedStreams.values().stream()
.sorted((o1, o2) -> nameCmp.compare(o1.get(0), o2.get(0)))
.map(streams -> streams.stream().sorted(formatCmp).collect(Collectors.toList()))
.collect(Collectors.toList());
}
/*//////////////////////////////////////////////////////////////////////////
// Utils
//////////////////////////////////////////////////////////////////////////*/
/**
* Get a filtered stream list, by using Java 8 Stream's API and the given predicate.
*
* @param streamList the stream list to filter
* @param streamListPredicate the predicate which will be used to filter streams
* @param <S> the item type's class that extends {@link Stream}
* @return a new stream list filtered using the given predicate
*/
private static <S extends Stream> List<S> getFilteredStreamList(
@Nullable final List<S> streamList,
final Predicate<S> streamListPredicate) {
if (streamList == null) {
return Collections.emptyList();
}
return streamList.stream()
.filter(streamListPredicate)
.collect(Collectors.toList());
}
/** Lookup the preferred resolution and the current resolution limit.
*
* @param context App context
* @param defaultResolutionKey The defaultResolution preference key
* @param defaultResolutionDefaultValue Default resolution if key does not exist
* @return The smaller resolution of either the preference or the current limit.
*/
private static String getPreferredResolutionOrCurrentLimit(
@NonNull final Context context,
final int defaultResolutionKey,
final int defaultResolutionDefaultValue
) {
final SharedPreferences preferences =
PreferenceManager.getDefaultSharedPreferences(context);
// Load the preferred resolution otherwise the best available
final String preferredResolution = preferences.getString(
context.getString(defaultResolutionKey),
context.getString(defaultResolutionDefaultValue)
);
// clamp to the currently maximum allowed resolution
final String result;
final String resolutionLimit = getCurrentResolutionLimit(context);
if (resolutionLimit != null
&& (
// if the preference is best_resolution
preferredResolution.equals(context.getString(R.string.best_resolution_key))
// or the preference is higher than the current max allowed resolution
|| compareVideoStreamResolution(resolutionLimit, preferredResolution) < 1
)) {
result = resolutionLimit;
} else {
result = preferredResolution;
}
return result;
}
/**
* Return the index of the default stream in the list, that will be sorted in the process, based
* on the parameters defaultResolution and defaultFormat.
*
* @param defaultResolution the default resolution to look for
* (a resolution string or `bestResolutionKey`).
* @param bestResolutionKey key of the best resolution
* @param defaultFormat the default format to look for
* @param videoStreams a mutable list of the video streams to check (it will be sorted in
* place)
* @return index of the default resolution&format in the sorted videoStreams,
* -1 if `videoStreams` is empty
*/
static int getDefaultResolutionIndex(final String defaultResolution,
final String bestResolutionKey,
final MediaFormat defaultFormat,
@NonNull final List<VideoStream> videoStreams) {
if (videoStreams.isEmpty()) {
return -1;
}
sortStreamList(videoStreams, false);
if (defaultResolution.equals(bestResolutionKey)) {
return 0;
}
final int defaultStreamIndex =
getVideoStreamIndex(defaultResolution, defaultFormat, videoStreams);
// this is actually an error,
// but maybe there is really no stream fitting to the default value.
if (defaultStreamIndex == -1) {
return 0;
}
return defaultStreamIndex;
}
/**
* Join the two lists of video streams (video_only and normal videos),
* and sort them according with default format chosen by the user.
*
* @param defaultFormat format to give preference
* @param showHigherResolutions show >1080p resolutions
* @param videoStreams normal videos list
* @param videoOnlyStreams video only stream list
* @param ascendingOrder true -> smallest to greatest | false -> greatest to smallest
* @param preferVideoOnlyStreams if video-only streams should preferred when both video-only
* streams and normal video streams are available
* @return the sorted list
*/
@NonNull
static List<VideoStream> getSortedStreamVideosList(
@Nullable final MediaFormat defaultFormat,
final boolean showHigherResolutions,
@Nullable final List<VideoStream> videoStreams,
@Nullable final List<VideoStream> videoOnlyStreams,
final boolean ascendingOrder,
final boolean preferVideoOnlyStreams
) {
// Determine order of streams
// The last added list is preferred
final List<List<VideoStream>> videoStreamsOrdered =
preferVideoOnlyStreams
? Arrays.asList(videoStreams, videoOnlyStreams)
: Arrays.asList(videoOnlyStreams, videoStreams);
final List<VideoStream> allInitialStreams = videoStreamsOrdered.stream()
// Ignore lists that are null
.filter(Objects::nonNull)
.flatMap(List::stream)
// Filter out higher resolutions (or not if high resolutions should always be shown)
.filter(stream -> showHigherResolutions
|| !HIGH_RESOLUTION_LIST.contains(stream.getResolution()
// Replace any frame rate with nothing
.replaceAll("p\\d+$", "p")))
.collect(Collectors.toList());
final HashMap<String, VideoStream> hashMap = new HashMap<>();
// Add all to the hashmap
for (final VideoStream videoStream : allInitialStreams) {
hashMap.put(videoStream.getResolution(), videoStream);
}
// Override the values when the key == resolution, with the defaultFormat
for (final VideoStream videoStream : allInitialStreams) {
if (videoStream.getFormat() == defaultFormat) {
hashMap.put(videoStream.getResolution(), videoStream);
}
}
// Return the sorted list
return sortStreamList(new ArrayList<>(hashMap.values()), ascendingOrder);
}
/**
* Sort the streams list depending on the parameter ascendingOrder;
* <p>
* It works like that:<br>
* - Take a string resolution, remove the letters, replace "0p60" (for 60fps videos) with "1"
* and sort by the greatest:<br>
* <blockquote><pre>
* 720p -> 720
* 720p60 -> 721
* 360p -> 360
* 1080p -> 1080
* 1080p60 -> 1081
* <br>
* ascendingOrder ? 360 < 720 < 721 < 1080 < 1081
* !ascendingOrder ? 1081 < 1080 < 721 < 720 < 360</pre></blockquote>
*
* @param videoStreams list that the sorting will be applied
* @param ascendingOrder true -> smallest to greatest | false -> greatest to smallest
* @return The sorted list (same reference as parameter videoStreams)
*/
private static List<VideoStream> sortStreamList(final List<VideoStream> videoStreams,
final boolean ascendingOrder) {
// Compares the quality of two video streams.
final Comparator<VideoStream> comparator = Comparator.nullsLast(Comparator
.comparing(VideoStream::getResolution, ListHelper::compareVideoStreamResolution)
.thenComparingInt(s -> VIDEO_FORMAT_QUALITY_RANKING.indexOf(s.getFormat())));
Collections.sort(videoStreams, ascendingOrder ? comparator : comparator.reversed());
return videoStreams;
}
/**
* Get the audio-stream from the list with the highest rank, depending on the comparator.
* Format will be ignored if it yields no results.
*
* @param audioStreams List of audio streams
* @param comparator The comparator used for determining the max/best/highest ranked value
* @return Index of audio stream that produces the highest ranked result or -1 if not found
*/
static int getAudioIndexByHighestRank(@NonNull final List<AudioStream> audioStreams,
final Comparator<AudioStream> comparator) {
return audioStreams.stream()
.max(comparator)
.map(audioStreams::indexOf)
.orElse(-1);
}
/**
* Locates a possible match for the given resolution and format in the provided list.
*
* <p>In this order:</p>
*
* <ol>
* <li>Find a format and resolution match</li>
* <li>Find a format and resolution match and ignore the refresh</li>
* <li>Find a resolution match</li>
* <li>Find a resolution match and ignore the refresh</li>
* <li>Find a resolution just below the requested resolution and ignore the refresh</li>
* <li>Give up</li>
* </ol>
*
* @param targetResolution the resolution to look for
* @param targetFormat the format to look for
* @param videoStreams the available video streams
* @return the index of the preferred video stream
*/
static int getVideoStreamIndex(@NonNull final String targetResolution,
final MediaFormat targetFormat,
@NonNull final List<VideoStream> videoStreams) {
int fullMatchIndex = -1;
int fullMatchNoRefreshIndex = -1;
int resMatchOnlyIndex = -1;
int resMatchOnlyNoRefreshIndex = -1;
int lowerResMatchNoRefreshIndex = -1;
final String targetResolutionNoRefresh = targetResolution.replaceAll("p\\d+$", "p");
for (int idx = 0; idx < videoStreams.size(); idx++) {
final MediaFormat format = targetFormat == null
? null
: videoStreams.get(idx).getFormat();
final String resolution = videoStreams.get(idx).getResolution();
final String resolutionNoRefresh = resolution.replaceAll("p\\d+$", "p");
if (format == targetFormat && resolution.equals(targetResolution)) {
fullMatchIndex = idx;
}
if (format == targetFormat && resolutionNoRefresh.equals(targetResolutionNoRefresh)) {
fullMatchNoRefreshIndex = idx;
}
if (resMatchOnlyIndex == -1 && resolution.equals(targetResolution)) {
resMatchOnlyIndex = idx;
}
if (resMatchOnlyNoRefreshIndex == -1
&& resolutionNoRefresh.equals(targetResolutionNoRefresh)) {
resMatchOnlyNoRefreshIndex = idx;
}
if (lowerResMatchNoRefreshIndex == -1 && compareVideoStreamResolution(
resolutionNoRefresh, targetResolutionNoRefresh) < 0) {
lowerResMatchNoRefreshIndex = idx;
}
}
if (fullMatchIndex != -1) {
return fullMatchIndex;
}
if (fullMatchNoRefreshIndex != -1) {
return fullMatchNoRefreshIndex;
}
if (resMatchOnlyIndex != -1) {
return resMatchOnlyIndex;
}
if (resMatchOnlyNoRefreshIndex != -1) {
return resMatchOnlyNoRefreshIndex;
}
return lowerResMatchNoRefreshIndex;
}
/**
* Fetches the desired resolution or returns the default if it is not found.
* The resolution will be reduced if video choking is active.
*
* @param context Android app context
* @param defaultResolution the default resolution
* @param videoStreams the list of video streams to check
* @return the index of the preferred video stream, -1 if `videoStreams` is empty
*/
public static int getDefaultResolutionWithDefaultFormat(
@NonNull final Context context,
final String defaultResolution,
@NonNull final List<VideoStream> videoStreams
) {
final MediaFormat defaultFormat = getDefaultFormat(context,
R.string.default_video_format_key, R.string.default_video_format_value);
return getDefaultResolutionIndex(defaultResolution,
context.getString(R.string.best_resolution_key), defaultFormat, videoStreams);
}
private static MediaFormat getDefaultFormat(@NonNull final Context context,
@StringRes final int defaultFormatKey,
@StringRes final int defaultFormatValueKey) {
final SharedPreferences preferences =
PreferenceManager.getDefaultSharedPreferences(context);
final String defaultFormat = context.getString(defaultFormatValueKey);
final String defaultFormatString = preferences.getString(
context.getString(defaultFormatKey), defaultFormat);
MediaFormat defaultMediaFormat = getMediaFormatFromKey(context, defaultFormatString);
if (defaultMediaFormat == null) {
preferences.edit().putString(context.getString(defaultFormatKey), defaultFormat)
.apply();
defaultMediaFormat = getMediaFormatFromKey(context, defaultFormat);
}
return defaultMediaFormat;
}
@Nullable
private static MediaFormat getMediaFormatFromKey(@NonNull final Context context,
@NonNull final String formatKey) {
MediaFormat format = null;
if (formatKey.equals(context.getString(R.string.video_webm_key))) {
format = MediaFormat.WEBM;
} else if (formatKey.equals(context.getString(R.string.video_mp4_key))) {
format = MediaFormat.MPEG_4;
} else if (formatKey.equals(context.getString(R.string.video_3gp_key))) {
format = MediaFormat.v3GPP;
} else if (formatKey.equals(context.getString(R.string.audio_webm_key))) {
format = MediaFormat.WEBMA;
} else if (formatKey.equals(context.getString(R.string.audio_m4a_key))) {
format = MediaFormat.M4A;
}
return format;
}
/** #Comparator for two resolution strings.
*
* See {@link #sortStreamList} for ordering.
*
* @param r1 first
* @param r2 second
* @return comparison int
*/
private static int compareVideoStreamResolution(@NonNull final String r1,
@NonNull final String r2) {
try {
final int res1 = Integer.parseInt(r1.replaceAll("0p\\d+$", "1")
.replaceAll("[^\\d.]", ""));
final int res2 = Integer.parseInt(r2.replaceAll("0p\\d+$", "1")
.replaceAll("[^\\d.]", ""));
return res1 - res2;
} catch (final NumberFormatException e) {
// Consider the first one greater because we don't know if the two streams are
// different or not (a NumberFormatException was thrown so we don't know the resolution
// of one stream or of all streams)
return 1;
}
}
/** Does the application have a maximum resolution set?
*
* @param context App context
* @return whether a max resolution is set
*/
static boolean isCurrentlyLimitingDataUsage(@NonNull final Context context) {
return getCurrentResolutionLimit(context) != null;
}
/**
* The maximum current resolution allowed by application settings.
* Takes into account whether we are on a metered network.
*
* @param context App context
* @return current maximum resolution allowed or null if there is no maximum
*/
private static String getCurrentResolutionLimit(@NonNull final Context context) {
String currentResolutionLimit = null;
if (isMeteredNetwork(context)) {
final SharedPreferences preferences =
PreferenceManager.getDefaultSharedPreferences(context);
final String defValue = context.getString(R.string.limit_data_usage_none_key);
final String value = preferences.getString(
context.getString(R.string.limit_mobile_data_usage_key), defValue);
currentResolutionLimit = defValue.equals(value) ? null : value;
}
return currentResolutionLimit;
}
/**
* Is the current network metered (like mobile data)?
*
* @param context App context
* @return {@code true} if connected to a metered network
*/
public static boolean isMeteredNetwork(@NonNull final Context context) {
final ConnectivityManager manager =
ContextCompat.getSystemService(context, ConnectivityManager.class);
if (manager == null || manager.getActiveNetworkInfo() == null) {
return false;
}
return manager.isActiveNetworkMetered();
}
/**
* Get a {@link Comparator} to compare {@link AudioStream}s by their format and bitrate.
*
* <p>The preferred stream will be ordered last.</p>
*
* @param context app context
* @return Comparator
*/
private static Comparator<AudioStream> getAudioFormatComparator(
final @NonNull Context context) {
final MediaFormat defaultFormat = getDefaultFormat(context,
R.string.default_audio_format_key, R.string.default_audio_format_value);
return getAudioFormatComparator(defaultFormat, isCurrentlyLimitingDataUsage(context));
}
/**
* Get a {@link Comparator} to compare {@link AudioStream}s by their format and bitrate.
*
* <p>The preferred stream will be ordered last.</p>
*
* @param defaultFormat the default format to look for
* @param limitDataUsage choose low bitrate audio stream
* @return Comparator
*/
static Comparator<AudioStream> getAudioFormatComparator(
@Nullable final MediaFormat defaultFormat, final boolean limitDataUsage) {
final List<MediaFormat> formatRanking = limitDataUsage
? AUDIO_FORMAT_EFFICIENCY_RANKING : AUDIO_FORMAT_QUALITY_RANKING;
Comparator<AudioStream> bitrateComparator =
Comparator.comparingInt(AudioStream::getAverageBitrate);
if (limitDataUsage) {
bitrateComparator = bitrateComparator.reversed();
}
return Comparator.comparing(AudioStream::getFormat, (o1, o2) -> {
if (defaultFormat != null) {
return Boolean.compare(o1 == defaultFormat, o2 == defaultFormat);
}
return 0;
}).thenComparing(bitrateComparator).thenComparingInt(
stream -> formatRanking.indexOf(stream.getFormat()));
}
/**
* Get a {@link Comparator} to compare {@link AudioStream}s by their tracks.
*
* <p>Tracks will be compared this order:</p>
* <ol>
* <li>If {@code preferOriginalAudio}: use original audio</li>
* <li>Language matches {@code preferredLanguage}</li>
* <li>
* Track type ranks highest in this order:
* <i>Original</i> > <i>Dubbed</i> > <i>Descriptive</i>
* <p>If {@code preferDescriptiveAudio}:
* <i>Descriptive</i> > <i>Dubbed</i> > <i>Original</i></p>
* </li>
* <li>Language is English</li>
* </ol>
*
* <p>The preferred track will be ordered last.</p>
*
* @param context App context
* @return Comparator
*/
private static Comparator<AudioStream> getAudioTrackComparator(
@NonNull final Context context) {
final SharedPreferences preferences =
PreferenceManager.getDefaultSharedPreferences(context);
final Locale preferredLanguage = Localization.getPreferredLocale(context);
final boolean preferOriginalAudio =
preferences.getBoolean(context.getString(R.string.prefer_original_audio_key),
false);
final boolean preferDescriptiveAudio =
preferences.getBoolean(context.getString(R.string.prefer_descriptive_audio_key),
false);
return getAudioTrackComparator(preferredLanguage, preferOriginalAudio,
preferDescriptiveAudio);
}
/**
* Get a {@link Comparator} to compare {@link AudioStream}s by their tracks.
*
* <p>Tracks will be compared this order:</p>
* <ol>
* <li>If {@code preferOriginalAudio}: use original audio</li>
* <li>Language matches {@code preferredLanguage}</li>
* <li>
* Track type ranks highest in this order:
* <i>Original</i> > <i>Dubbed</i> > <i>Descriptive</i>
* <p>If {@code preferDescriptiveAudio}:
* <i>Descriptive</i> > <i>Dubbed</i> > <i>Original</i></p>
* </li>
* <li>Language is English</li>
* </ol>
*
* <p>The preferred track will be ordered last.</p>
*
* @param preferredLanguage Preferred audio stream language
* @param preferOriginalAudio Get the original audio track regardless of its language
* @param preferDescriptiveAudio Prefer the descriptive audio track if available
* @return Comparator
*/
static Comparator<AudioStream> getAudioTrackComparator(
final Locale preferredLanguage,
final boolean preferOriginalAudio,
final boolean preferDescriptiveAudio) {
final String langCode = preferredLanguage.getISO3Language();
final List<AudioTrackType> trackTypeRanking = preferDescriptiveAudio
? AUDIO_TRACK_TYPE_RANKING_DESCRIPTIVE : AUDIO_TRACK_TYPE_RANKING;
return Comparator.comparing(AudioStream::getAudioTrackType, (o1, o2) -> {
if (preferOriginalAudio) {
return Boolean.compare(
o1 == AudioTrackType.ORIGINAL, o2 == AudioTrackType.ORIGINAL);
}
return 0;
}).thenComparing(AudioStream::getAudioLocale,
Comparator.nullsFirst(Comparator.comparing(
locale -> locale.getISO3Language().equals(langCode))))
.thenComparing(AudioStream::getAudioTrackType,
Comparator.nullsFirst(Comparator.comparingInt(trackTypeRanking::indexOf)))
.thenComparing(AudioStream::getAudioLocale,
Comparator.nullsFirst(Comparator.comparing(
locale -> locale.getISO3Language().equals(
Locale.ENGLISH.getISO3Language()))));
}
/**
* Get a {@link Comparator} to compare {@link AudioStream}s by their languages and track types
* for alphabetical sorting.
*
* @param context app context for localization
* @return Comparator
*/
private static Comparator<AudioStream> getAudioTrackNameComparator(
@NonNull final Context context) {
final Locale appLoc = Localization.getAppLocale(context);
return Comparator.comparing(
AudioStream::getAudioLocale,
Comparator.nullsLast(
Comparator.comparing(locale -> locale.getDisplayName(appLoc))
))
.thenComparing(AudioStream::getAudioTrackType);
}
}