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Merge pull request #958 from AudricV/yt-playlists-support-new-metadata-format 

[YouTube] Support new metadata format of playlists
This commit is contained in:
Tobi 2022-10-30 12:31:43 +01:00 committed by GitHub
parent 3d314169b9 65125a3eb4
commit 430504b4b5
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2 changed files with 144 additions and 76 deletions
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216
extractor/src/main/java/org/schabi/newpipe/extractor/services/youtube/extractors/YoutubePlaylistExtractor.java
View File

@ -44,16 +44,19 @@ import javax.annotation.Nonnull;
import javax.annotation.Nullable;
public class YoutubePlaylistExtractor extends PlaylistExtractor {
// Minimum size of the stats array in the browse response which includes the streams count
private static final int STATS_ARRAY_WITH_STREAMS_COUNT_MIN_SIZE = 2;
// Names of some objects in JSON response frequently used in this class
private static final String PLAYLIST_VIDEO_RENDERER = "playlistVideoRenderer";
private static final String PLAYLIST_VIDEO_LIST_RENDERER = "playlistVideoListRenderer";
private static final String SIDEBAR = "sidebar";
private static final String VIDEO_OWNER_RENDERER = "videoOwnerRenderer";
private JsonObject browseResponse;
private JsonObject playlistInfo;
private JsonObject uploaderInfo;
private JsonObject playlistHeader;
private boolean isNewPlaylistInterface;
public YoutubePlaylistExtractor(final StreamingService service,
final ListLinkHandler linkHandler) {
@ -73,48 +76,86 @@ public class YoutubePlaylistExtractor extends PlaylistExtractor {
browseResponse = getJsonPostResponse("browse", body, localization);
YoutubeParsingHelper.defaultAlertsCheck(browseResponse);
playlistInfo = getPlaylistInfo();
isNewPlaylistInterface = checkIfResponseIsNewPlaylistInterface();
}
/**
* Whether the playlist response is using only the new playlist design.
*
* <p>
* This new response changes how metadata is returned, and does not provide author thumbnails.
* </p>
*
* <p>
* The new response can be detected by checking whether a header JSON object is returned in the
* browse response (the old returns instead a sidebar one).
* </p>
*
* <p>
* This new playlist UI is currently A/B tested.
* </p>
*
* @return Whether the playlist response is using only the new playlist design
*/
private boolean checkIfResponseIsNewPlaylistInterface() {
// The "old" playlist UI can be also returned with the new one
return browseResponse.has("header") && !browseResponse.has(SIDEBAR);
}
@Nonnull
private JsonObject getUploaderInfo() throws ParsingException {
final JsonArray items = browseResponse.getObject("sidebar")
.getObject("playlistSidebarRenderer")
.getArray("items");
JsonObject videoOwner = items.getObject(1)
.getObject("playlistSidebarSecondaryInfoRenderer")
.getObject("videoOwner");
if (videoOwner.has(VIDEO_OWNER_RENDERER)) {
return videoOwner.getObject(VIDEO_OWNER_RENDERER);
}
// we might want to create a loop here instead of using duplicated code
videoOwner = items.getObject(items.size())
.getObject("playlistSidebarSecondaryInfoRenderer")
.getObject("videoOwner");
if (videoOwner.has(VIDEO_OWNER_RENDERER)) {
return videoOwner.getObject(VIDEO_OWNER_RENDERER);
}
throw new ParsingException("Could not get uploader info");
}
private JsonObject getPlaylistInfo() throws ParsingException {
try {
return browseResponse.getObject("sidebar")
if (uploaderInfo == null) {
uploaderInfo = browseResponse.getObject(SIDEBAR)
.getObject("playlistSidebarRenderer")
.getArray("items")
.getObject(0)
.getObject("playlistSidebarPrimaryInfoRenderer");
} catch (final Exception e) {
throw new ParsingException("Could not get PlaylistInfo", e);
.stream()
.filter(JsonObject.class::isInstance)
.map(JsonObject.class::cast)
.filter(item -> item.getObject("playlistSidebarSecondaryInfoRenderer")
.getObject("videoOwner")
.has(VIDEO_OWNER_RENDERER))
.map(item -> item.getObject("playlistSidebarSecondaryInfoRenderer")
.getObject("videoOwner")
.getObject(VIDEO_OWNER_RENDERER))
.findFirst()
.orElseThrow(() -> new ParsingException("Could not get uploader info"));
}
return uploaderInfo;
}
@Nonnull
private JsonObject getPlaylistInfo() throws ParsingException {
if (playlistInfo == null) {
playlistInfo = browseResponse.getObject(SIDEBAR)
.getObject("playlistSidebarRenderer")
.getArray("items")
.stream()
.filter(JsonObject.class::isInstance)
.map(JsonObject.class::cast)
.filter(item -> item.has("playlistSidebarPrimaryInfoRenderer"))
.map(item -> item.getObject("playlistSidebarPrimaryInfoRenderer"))
.findFirst()
.orElseThrow(() -> new ParsingException("Could not get playlist info"));
}
return playlistInfo;
}
@Nonnull
private JsonObject getPlaylistHeader() {
if (playlistHeader == null) {
playlistHeader = browseResponse.getObject("header")
.getObject("playlistHeaderRenderer");
}
return playlistHeader;
}
@Nonnull
@Override
public String getName() throws ParsingException {
final String name = getTextFromObject(playlistInfo.getObject("title"));
final String name = getTextFromObject(getPlaylistInfo().getObject("title"));
if (!isNullOrEmpty(name)) {
return name;
}
@ -127,13 +168,24 @@ public class YoutubePlaylistExtractor extends PlaylistExtractor {
@Nonnull
@Override
public String getThumbnailUrl() throws ParsingException {
String url = playlistInfo.getObject("thumbnailRenderer")
.getObject("playlistVideoThumbnailRenderer")
.getObject("thumbnail")
.getArray("thumbnails")
.getObject(0)
.getString("url");
String url;
if (isNewPlaylistInterface) {
url = getPlaylistHeader().getObject("playlistHeaderBanner")
.getObject("heroPlaylistThumbnailRenderer")
.getObject("thumbnail")
.getArray("thumbnails")
.getObject(0)
.getString("url");
} else {
url = getPlaylistInfo().getObject("thumbnailRenderer")
.getObject("playlistVideoThumbnailRenderer")
.getObject("thumbnail")
.getArray("thumbnails")
.getObject(0)
.getString("url");
}
// This data structure is returned in both layouts
if (isNullOrEmpty(url)) {
url = browseResponse.getObject("microformat")
.getObject("microformatDataRenderer")
@ -153,7 +205,12 @@ public class YoutubePlaylistExtractor extends PlaylistExtractor {
@Override
public String getUploaderUrl() throws ParsingException {
try {
return getUrlFromNavigationEndpoint(getUploaderInfo().getObject("navigationEndpoint"));
return getUrlFromNavigationEndpoint(isNewPlaylistInterface
? getPlaylistHeader().getObject("ownerText")
.getArray("runs")
.getObject(0)
.getObject("navigationEndpoint")
: getUploaderInfo().getObject("navigationEndpoint"));
} catch (final Exception e) {
throw new ParsingException("Could not get playlist uploader url", e);
}
@ -162,7 +219,9 @@ public class YoutubePlaylistExtractor extends PlaylistExtractor {
@Override
public String getUploaderName() throws ParsingException {
try {
return getTextFromObject(getUploaderInfo().getObject("title"));
return getTextFromObject(isNewPlaylistInterface
? getPlaylistHeader().getObject("ownerText")
: getUploaderInfo().getObject("title"));
} catch (final Exception e) {
throw new ParsingException("Could not get playlist uploader name", e);
}
@ -170,6 +229,11 @@ public class YoutubePlaylistExtractor extends PlaylistExtractor {
@Override
public String getUploaderAvatarUrl() throws ParsingException {
if (isNewPlaylistInterface) {
// The new playlist interface doesn't provide an uploader avatar
return "";
}
try {
final String url = getUploaderInfo()
.getObject("thumbnail")
@ -191,44 +255,50 @@ public class YoutubePlaylistExtractor extends PlaylistExtractor {
@Override
public long getStreamCount() throws ParsingException {
try {
final JsonArray stats = playlistInfo.getArray("stats");
// For unknown reasons, YouTube don't provide the stream count for learning playlists
// on the desktop client but only the number of views and the playlist modified date
// On normal playlists, at least 3 items are returned: the number of videos, the number
// of views and the playlist modification date
// We can get it by using another client, however it seems we can't get the avatar
// uploader URL with another client than the WEB client
if (stats.size() > STATS_ARRAY_WITH_STREAMS_COUNT_MIN_SIZE) {
final String videosText = getTextFromObject(playlistInfo.getArray("stats")
.getObject(0));
if (videosText != null) {
return Long.parseLong(Utils.removeNonDigitCharacters(videosText));
if (isNewPlaylistInterface) {
final String numVideosText =
getTextFromObject(getPlaylistHeader().getObject("numVideosText"));
if (numVideosText != null) {
try {
return Long.parseLong(Utils.removeNonDigitCharacters(numVideosText));
} catch (final NumberFormatException ignored) {
}
}
return ITEM_COUNT_UNKNOWN;
} catch (final Exception e) {
throw new ParsingException("Could not get video count from playlist", e);
final String firstByLineRendererText = getTextFromObject(
getPlaylistHeader().getArray("byline")
.getObject(0)
.getObject("text"));
if (firstByLineRendererText != null) {
try {
return Long.parseLong(Utils.removeNonDigitCharacters(firstByLineRendererText));
} catch (final NumberFormatException ignored) {
}
}
}
}
@Nonnull
@Override
public String getSubChannelName() {
return "";
}
// These data structures are returned in both layouts
final JsonArray briefStats =
(isNewPlaylistInterface ? getPlaylistHeader() : getPlaylistInfo())
.getArray("briefStats");
if (!briefStats.isEmpty()) {
final String briefsStatsText = getTextFromObject(briefStats.getObject(0));
if (briefsStatsText != null) {
return Long.parseLong(Utils.removeNonDigitCharacters(briefsStatsText));
}
}
@Nonnull
@Override
public String getSubChannelUrl() {
return "";
}
final JsonArray stats = (isNewPlaylistInterface ? getPlaylistHeader() : getPlaylistInfo())
.getArray("stats");
if (!stats.isEmpty()) {
final String statsText = getTextFromObject(stats.getObject(0));
if (statsText != null) {
return Long.parseLong(Utils.removeNonDigitCharacters(statsText));
}
}
@Nonnull
@Override
public String getSubChannelAvatarUrl() {
return "";
return ITEM_COUNT_UNKNOWN;
}
@Nonnull

4
extractor/src/test/java/org/schabi/newpipe/extractor/services/youtube/YoutubePlaylistExtractorTest.java
View File

@ -5,7 +5,6 @@ import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.schabi.newpipe.extractor.ExtractorAsserts.assertIsSecureUrl;
import static org.schabi.newpipe.extractor.ListExtractor.ITEM_COUNT_UNKNOWN;
import static org.schabi.newpipe.extractor.ServiceList.YouTube;
import static org.schabi.newpipe.extractor.services.DefaultTests.assertNoMoreItems;
import static org.schabi.newpipe.extractor.services.DefaultTests.defaultTestGetPageInNewExtractor;
@ -383,8 +382,7 @@ public class YoutubePlaylistExtractorTest {
@Test
public void testStreamCount() throws Exception {
// We are not able to extract the stream count of YouTube learning playlists
assertEquals(ITEM_COUNT_UNKNOWN, extractor.getStreamCount());
ExtractorAsserts.assertGreater(40, extractor.getStreamCount());
}
@Override