mirror of
https://github.com/androidx/media.git
synced 2025-04-30 06:46:50 +08:00
DefaultMediaSourceFactory: Lazily load media source factories
Th purpose of this change is to speed up the instantiation of the DefaultMediaSourceFactory. PiperOrigin-RevId: 404665352
This commit is contained in:
christosts
Oliver Woodman
parent
140ef753f7
commit
bbe2cef740
@ -15,10 +15,11 @@
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*/
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package com.google.android.exoplayer2.source;
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import static com.google.android.exoplayer2.util.Assertions.checkNotNull;
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import static com.google.android.exoplayer2.util.Assertions.checkStateNotNull;
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import static com.google.android.exoplayer2.util.Util.castNonNull;
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import android.content.Context;
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import android.util.SparseArray;
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import androidx.annotation.Nullable;
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import com.google.android.exoplayer2.C;
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import com.google.android.exoplayer2.Format;
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@ -44,14 +45,19 @@ import com.google.android.exoplayer2.upstream.DataSpec;
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import com.google.android.exoplayer2.upstream.DefaultDataSource;
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import com.google.android.exoplayer2.upstream.HttpDataSource;
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import com.google.android.exoplayer2.upstream.LoadErrorHandlingPolicy;
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import com.google.android.exoplayer2.util.Assertions;
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import com.google.android.exoplayer2.util.Log;
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import com.google.android.exoplayer2.util.MimeTypes;
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import com.google.android.exoplayer2.util.Util;
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import com.google.common.base.Supplier;
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import com.google.common.collect.ImmutableList;
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import com.google.common.primitives.Ints;
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import java.io.IOException;
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import java.util.Arrays;
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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Map;
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import java.util.Set;
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import org.checkerframework.checker.nullness.compatqual.NullableType;
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/**
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* The default {@link MediaSourceFactory} implementation.
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@ -111,8 +117,7 @@ public final class DefaultMediaSourceFactory implements MediaSourceFactory {
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private static final String TAG = "DefaultMediaSourceFactory";
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private final DataSource.Factory dataSourceFactory;
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private final SparseArray<MediaSourceFactory> mediaSourceFactories;
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@C.ContentType private final int[] supportedTypes;
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private final DelegateFactoryLoader delegateFactoryLoader;
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@Nullable private AdsLoaderProvider adsLoaderProvider;
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@Nullable private AdViewProvider adViewProvider;
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@ -165,11 +170,7 @@ public final class DefaultMediaSourceFactory implements MediaSourceFactory {
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public DefaultMediaSourceFactory(
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DataSource.Factory dataSourceFactory, ExtractorsFactory extractorsFactory) {
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this.dataSourceFactory = dataSourceFactory;
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mediaSourceFactories = loadDelegates(dataSourceFactory, extractorsFactory);
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supportedTypes = new int[mediaSourceFactories.size()];
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for (int i = 0; i < mediaSourceFactories.size(); i++) {
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supportedTypes[i] = mediaSourceFactories.keyAt(i);
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}
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delegateFactoryLoader = new DelegateFactoryLoader(dataSourceFactory, extractorsFactory);
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liveTargetOffsetMs = C.TIME_UNSET;
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liveMinOffsetMs = C.TIME_UNSET;
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liveMaxOffsetMs = C.TIME_UNSET;
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@ -278,41 +279,30 @@ public final class DefaultMediaSourceFactory implements MediaSourceFactory {
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return this;
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}
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@SuppressWarnings("deprecation") // Calling through to the same deprecated method.
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@Override
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public DefaultMediaSourceFactory setDrmHttpDataSourceFactory(
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@Nullable HttpDataSource.Factory drmHttpDataSourceFactory) {
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for (int i = 0; i < mediaSourceFactories.size(); i++) {
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mediaSourceFactories.valueAt(i).setDrmHttpDataSourceFactory(drmHttpDataSourceFactory);
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}
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delegateFactoryLoader.setDrmHttpDataSourceFactory(drmHttpDataSourceFactory);
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return this;
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}
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@SuppressWarnings("deprecation") // Calling through to the same deprecated method.
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@Override
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public DefaultMediaSourceFactory setDrmUserAgent(@Nullable String userAgent) {
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for (int i = 0; i < mediaSourceFactories.size(); i++) {
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mediaSourceFactories.valueAt(i).setDrmUserAgent(userAgent);
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}
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delegateFactoryLoader.setDrmUserAgent(userAgent);
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return this;
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}
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@SuppressWarnings("deprecation") // Calling through to the same deprecated method.
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@Override
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public DefaultMediaSourceFactory setDrmSessionManager(
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@Nullable DrmSessionManager drmSessionManager) {
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for (int i = 0; i < mediaSourceFactories.size(); i++) {
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mediaSourceFactories.valueAt(i).setDrmSessionManager(drmSessionManager);
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}
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delegateFactoryLoader.setDrmSessionManager(drmSessionManager);
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return this;
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}
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@Override
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public DefaultMediaSourceFactory setDrmSessionManagerProvider(
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@Nullable DrmSessionManagerProvider drmSessionManagerProvider) {
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for (int i = 0; i < mediaSourceFactories.size(); i++) {
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mediaSourceFactories.valueAt(i).setDrmSessionManagerProvider(drmSessionManagerProvider);
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}
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delegateFactoryLoader.setDrmSessionManagerProvider(drmSessionManagerProvider);
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return this;
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}
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@ -320,9 +310,7 @@ public final class DefaultMediaSourceFactory implements MediaSourceFactory {
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public DefaultMediaSourceFactory setLoadErrorHandlingPolicy(
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@Nullable LoadErrorHandlingPolicy loadErrorHandlingPolicy) {
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this.loadErrorHandlingPolicy = loadErrorHandlingPolicy;
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for (int i = 0; i < mediaSourceFactories.size(); i++) {
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mediaSourceFactories.valueAt(i).setLoadErrorHandlingPolicy(loadErrorHandlingPolicy);
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}
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delegateFactoryLoader.setLoadErrorHandlingPolicy(loadErrorHandlingPolicy);
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return this;
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}
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@ -334,26 +322,25 @@ public final class DefaultMediaSourceFactory implements MediaSourceFactory {
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@Deprecated
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@Override
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public DefaultMediaSourceFactory setStreamKeys(@Nullable List<StreamKey> streamKeys) {
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for (int i = 0; i < mediaSourceFactories.size(); i++) {
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mediaSourceFactories.valueAt(i).setStreamKeys(streamKeys);
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}
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delegateFactoryLoader.setStreamKeys(streamKeys);
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return this;
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}
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@Override
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public int[] getSupportedTypes() {
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return Arrays.copyOf(supportedTypes, supportedTypes.length);
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return delegateFactoryLoader.getSupportedTypes();
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}
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@Override
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public MediaSource createMediaSource(MediaItem mediaItem) {
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Assertions.checkNotNull(mediaItem.localConfiguration);
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checkNotNull(mediaItem.localConfiguration);
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@C.ContentType
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int type =
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Util.inferContentTypeForUriAndMimeType(
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mediaItem.localConfiguration.uri, mediaItem.localConfiguration.mimeType);
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@Nullable MediaSourceFactory mediaSourceFactory = mediaSourceFactories.get(type);
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Assertions.checkNotNull(
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@Nullable
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MediaSourceFactory mediaSourceFactory = delegateFactoryLoader.getMediaSourceFactory(type);
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checkStateNotNull(
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mediaSourceFactory, "No suitable media source factory found for content type: " + type);
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MediaItem.LiveConfiguration.Builder liveConfigurationBuilder =
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@ -433,22 +420,22 @@ public final class DefaultMediaSourceFactory implements MediaSourceFactory {
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}
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return new ClippingMediaSource(
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mediaSource,
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C.msToUs(mediaItem.clippingConfiguration.startPositionMs),
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C.msToUs(mediaItem.clippingConfiguration.endPositionMs),
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Util.msToUs(mediaItem.clippingConfiguration.startPositionMs),
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Util.msToUs(mediaItem.clippingConfiguration.endPositionMs),
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/* enableInitialDiscontinuity= */ !mediaItem.clippingConfiguration.startsAtKeyFrame,
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/* allowDynamicClippingUpdates= */ mediaItem.clippingConfiguration.relativeToLiveWindow,
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mediaItem.clippingConfiguration.relativeToDefaultPosition);
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}
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private MediaSource maybeWrapWithAdsMediaSource(MediaItem mediaItem, MediaSource mediaSource) {
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Assertions.checkNotNull(mediaItem.localConfiguration);
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checkNotNull(mediaItem.localConfiguration);
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@Nullable
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MediaItem.AdsConfiguration adsConfiguration = mediaItem.localConfiguration.adsConfiguration;
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if (adsConfiguration == null) {
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return mediaSource;
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}
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AdsLoaderProvider adsLoaderProvider = this.adsLoaderProvider;
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AdViewProvider adViewProvider = this.adViewProvider;
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@Nullable AdsLoaderProvider adsLoaderProvider = this.adsLoaderProvider;
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@Nullable AdViewProvider adViewProvider = this.adViewProvider;
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if (adsLoaderProvider == null || adViewProvider == null) {
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Log.w(
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TAG,
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@ -473,51 +460,181 @@ public final class DefaultMediaSourceFactory implements MediaSourceFactory {
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adViewProvider);
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}
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private static SparseArray<MediaSourceFactory> loadDelegates(
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/** Loads media source factories lazily. */
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private static final class DelegateFactoryLoader {
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private final DataSource.Factory dataSourceFactory;
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private final ExtractorsFactory extractorsFactory;
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private final Map<Integer, @NullableType Supplier<MediaSourceFactory>>
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mediaSourceFactorySuppliers;
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private final Set<Integer> supportedTypes;
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private final Map<Integer, MediaSourceFactory> mediaSourceFactories;
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@Nullable private HttpDataSource.Factory drmHttpDataSourceFactory;
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@Nullable private String userAgent;
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@Nullable private DrmSessionManager drmSessionManager;
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@Nullable private DrmSessionManagerProvider drmSessionManagerProvider;
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@Nullable private LoadErrorHandlingPolicy loadErrorHandlingPolicy;
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@Nullable private List<StreamKey> streamKeys;
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public DelegateFactoryLoader(
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DataSource.Factory dataSourceFactory, ExtractorsFactory extractorsFactory) {
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SparseArray<MediaSourceFactory> factories = new SparseArray<>();
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this.dataSourceFactory = dataSourceFactory;
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this.extractorsFactory = extractorsFactory;
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mediaSourceFactorySuppliers = new HashMap<>();
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supportedTypes = new HashSet<>();
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mediaSourceFactories = new HashMap<>();
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}
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@C.ContentType
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public int[] getSupportedTypes() {
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ensureAllSuppliersAreLoaded();
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return Ints.toArray(supportedTypes);
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}
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@SuppressWarnings("deprecation") // Forwarding to deprecated methods.
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@Nullable
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public MediaSourceFactory getMediaSourceFactory(@C.ContentType int contentType) {
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@Nullable MediaSourceFactory mediaSourceFactory = mediaSourceFactories.get(contentType);
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if (mediaSourceFactory != null) {
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return mediaSourceFactory;
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}
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@Nullable
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Supplier<MediaSourceFactory> mediaSourceFactorySupplier = maybeLoadSupplier(contentType);
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if (mediaSourceFactorySupplier == null) {
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return null;
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}
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mediaSourceFactory = mediaSourceFactorySupplier.get();
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if (drmHttpDataSourceFactory != null) {
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mediaSourceFactory.setDrmHttpDataSourceFactory(drmHttpDataSourceFactory);
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}
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if (userAgent != null) {
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mediaSourceFactory.setDrmUserAgent(userAgent);
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}
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if (drmSessionManager != null) {
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mediaSourceFactory.setDrmSessionManager(drmSessionManager);
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}
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if (drmSessionManagerProvider != null) {
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mediaSourceFactory.setDrmSessionManagerProvider(drmSessionManagerProvider);
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}
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if (loadErrorHandlingPolicy != null) {
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mediaSourceFactory.setLoadErrorHandlingPolicy(loadErrorHandlingPolicy);
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}
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if (streamKeys != null) {
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mediaSourceFactory.setStreamKeys(streamKeys);
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}
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mediaSourceFactories.put(contentType, mediaSourceFactory);
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return mediaSourceFactory;
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}
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@SuppressWarnings("deprecation") // Forwarding to deprecated method.
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public void setDrmHttpDataSourceFactory(
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@Nullable HttpDataSource.Factory drmHttpDataSourceFactory) {
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this.drmHttpDataSourceFactory = drmHttpDataSourceFactory;
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for (MediaSourceFactory mediaSourceFactory : mediaSourceFactories.values()) {
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mediaSourceFactory.setDrmHttpDataSourceFactory(drmHttpDataSourceFactory);
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}
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}
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@SuppressWarnings("deprecation") // Forwarding to deprecated method.
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public void setDrmUserAgent(@Nullable String userAgent) {
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this.userAgent = userAgent;
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for (MediaSourceFactory mediaSourceFactory : mediaSourceFactories.values()) {
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mediaSourceFactory.setDrmUserAgent(userAgent);
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}
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}
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@SuppressWarnings("deprecation") // Forwarding to deprecated method.
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public void setDrmSessionManager(@Nullable DrmSessionManager drmSessionManager) {
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this.drmSessionManager = drmSessionManager;
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for (MediaSourceFactory mediaSourceFactory : mediaSourceFactories.values()) {
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mediaSourceFactory.setDrmSessionManager(drmSessionManager);
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}
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}
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public void setDrmSessionManagerProvider(
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@Nullable DrmSessionManagerProvider drmSessionManagerProvider) {
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this.drmSessionManagerProvider = drmSessionManagerProvider;
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for (MediaSourceFactory mediaSourceFactory : mediaSourceFactories.values()) {
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mediaSourceFactory.setDrmSessionManagerProvider(drmSessionManagerProvider);
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}
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}
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public void setLoadErrorHandlingPolicy(
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@Nullable LoadErrorHandlingPolicy loadErrorHandlingPolicy) {
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this.loadErrorHandlingPolicy = loadErrorHandlingPolicy;
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for (MediaSourceFactory mediaSourceFactory : mediaSourceFactories.values()) {
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mediaSourceFactory.setLoadErrorHandlingPolicy(loadErrorHandlingPolicy);
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}
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}
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@SuppressWarnings("deprecation") // Forwarding to deprecated method.
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public void setStreamKeys(@Nullable List<StreamKey> streamKeys) {
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this.streamKeys = streamKeys;
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for (MediaSourceFactory mediaSourceFactory : mediaSourceFactories.values()) {
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mediaSourceFactory.setStreamKeys(streamKeys);
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}
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}
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private void ensureAllSuppliersAreLoaded() {
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maybeLoadSupplier(C.TYPE_DASH);
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maybeLoadSupplier(C.TYPE_SS);
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maybeLoadSupplier(C.TYPE_HLS);
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maybeLoadSupplier(C.TYPE_RTSP);
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maybeLoadSupplier(C.TYPE_OTHER);
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}
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@Nullable
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private Supplier<MediaSourceFactory> maybeLoadSupplier(@C.ContentType int contentType) {
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if (mediaSourceFactorySuppliers.containsKey(contentType)) {
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return mediaSourceFactorySuppliers.get(contentType);
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}
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@Nullable Supplier<MediaSourceFactory> mediaSourceFactorySupplier = null;
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try {
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Class<? extends MediaSourceFactory> factoryClazz =
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Class<? extends MediaSourceFactory> clazz;
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switch (contentType) {
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case C.TYPE_DASH:
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clazz =
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Class.forName("com.google.android.exoplayer2.source.dash.DashMediaSource$Factory")
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.asSubclass(MediaSourceFactory.class);
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factories.put(
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C.TYPE_DASH,
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factoryClazz.getConstructor(DataSource.Factory.class).newInstance(dataSourceFactory));
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} catch (Exception e) {
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// Expected if the app was built without the dash module.
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}
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try {
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Class<? extends MediaSourceFactory> factoryClazz =
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mediaSourceFactorySupplier = () -> newInstance(clazz, dataSourceFactory);
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break;
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case C.TYPE_SS:
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clazz =
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Class.forName(
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"com.google.android.exoplayer2.source.smoothstreaming.SsMediaSource$Factory")
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.asSubclass(MediaSourceFactory.class);
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factories.put(
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C.TYPE_SS,
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factoryClazz.getConstructor(DataSource.Factory.class).newInstance(dataSourceFactory));
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} catch (Exception e) {
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// Expected if the app was built without the smoothstreaming module.
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}
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try {
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Class<? extends MediaSourceFactory> factoryClazz =
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mediaSourceFactorySupplier = () -> newInstance(clazz, dataSourceFactory);
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break;
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case C.TYPE_HLS:
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clazz =
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Class.forName("com.google.android.exoplayer2.source.hls.HlsMediaSource$Factory")
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.asSubclass(MediaSourceFactory.class);
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factories.put(
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C.TYPE_HLS,
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factoryClazz.getConstructor(DataSource.Factory.class).newInstance(dataSourceFactory));
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} catch (Exception e) {
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// Expected if the app was built without the hls module.
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}
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try {
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Class<? extends MediaSourceFactory> factoryClazz =
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mediaSourceFactorySupplier = () -> newInstance(clazz, dataSourceFactory);
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break;
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case C.TYPE_RTSP:
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clazz =
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Class.forName("com.google.android.exoplayer2.source.rtsp.RtspMediaSource$Factory")
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.asSubclass(MediaSourceFactory.class);
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factories.put(C.TYPE_RTSP, factoryClazz.getConstructor().newInstance());
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} catch (Exception e) {
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// Expected if the app was built without the RTSP module.
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mediaSourceFactorySupplier = () -> newInstance(clazz);
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break;
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case C.TYPE_OTHER:
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mediaSourceFactorySupplier =
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() -> new ProgressiveMediaSource.Factory(dataSourceFactory, extractorsFactory);
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break;
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default:
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// Do nothing.
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}
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} catch (ClassNotFoundException e) {
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// Expected if the app was built without the specific module.
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}
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mediaSourceFactorySuppliers.put(contentType, mediaSourceFactorySupplier);
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if (mediaSourceFactorySupplier != null) {
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supportedTypes.add(contentType);
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}
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return mediaSourceFactorySupplier;
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}
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factories.put(
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C.TYPE_OTHER, new ProgressiveMediaSource.Factory(dataSourceFactory, extractorsFactory));
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return factories;
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}
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private static final class UnknownSubtitlesExtractor implements Extractor {
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@ -555,11 +672,26 @@ public final class DefaultMediaSourceFactory implements MediaSourceFactory {
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}
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@Override
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public void seek(long position, long timeUs) {
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return;
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}
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public void seek(long position, long timeUs) {}
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@Override
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public void release() {}
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}
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private static MediaSourceFactory newInstance(
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Class<? extends MediaSourceFactory> clazz, DataSource.Factory dataSourceFactory) {
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try {
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return clazz.getConstructor(DataSource.Factory.class).newInstance(dataSourceFactory);
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} catch (Exception e) {
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throw new IllegalStateException(e);
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}
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}
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private static MediaSourceFactory newInstance(Class<? extends MediaSourceFactory> clazz) {
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try {
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return clazz.getConstructor().newInstance();
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} catch (Exception e) {
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throw new IllegalStateException(e);
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}
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}
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}
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