diff options
Diffstat (limited to 'mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/CompositeSequenceableLoader.java')
-rw-r--r-- | mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/CompositeSequenceableLoader.java | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/CompositeSequenceableLoader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/CompositeSequenceableLoader.java new file mode 100644 index 0000000000..9a72903528 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/CompositeSequenceableLoader.java @@ -0,0 +1,95 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; + +/** + * A {@link SequenceableLoader} that encapsulates multiple other {@link SequenceableLoader}s. + */ +public class CompositeSequenceableLoader implements SequenceableLoader { + + protected final SequenceableLoader[] loaders; + + public CompositeSequenceableLoader(SequenceableLoader[] loaders) { + this.loaders = loaders; + } + + @Override + public final long getBufferedPositionUs() { + long bufferedPositionUs = Long.MAX_VALUE; + for (SequenceableLoader loader : loaders) { + long loaderBufferedPositionUs = loader.getBufferedPositionUs(); + if (loaderBufferedPositionUs != C.TIME_END_OF_SOURCE) { + bufferedPositionUs = Math.min(bufferedPositionUs, loaderBufferedPositionUs); + } + } + return bufferedPositionUs == Long.MAX_VALUE ? C.TIME_END_OF_SOURCE : bufferedPositionUs; + } + + @Override + public final long getNextLoadPositionUs() { + long nextLoadPositionUs = Long.MAX_VALUE; + for (SequenceableLoader loader : loaders) { + long loaderNextLoadPositionUs = loader.getNextLoadPositionUs(); + if (loaderNextLoadPositionUs != C.TIME_END_OF_SOURCE) { + nextLoadPositionUs = Math.min(nextLoadPositionUs, loaderNextLoadPositionUs); + } + } + return nextLoadPositionUs == Long.MAX_VALUE ? C.TIME_END_OF_SOURCE : nextLoadPositionUs; + } + + @Override + public final void reevaluateBuffer(long positionUs) { + for (SequenceableLoader loader : loaders) { + loader.reevaluateBuffer(positionUs); + } + } + + @Override + public boolean continueLoading(long positionUs) { + boolean madeProgress = false; + boolean madeProgressThisIteration; + do { + madeProgressThisIteration = false; + long nextLoadPositionUs = getNextLoadPositionUs(); + if (nextLoadPositionUs == C.TIME_END_OF_SOURCE) { + break; + } + for (SequenceableLoader loader : loaders) { + long loaderNextLoadPositionUs = loader.getNextLoadPositionUs(); + boolean isLoaderBehind = + loaderNextLoadPositionUs != C.TIME_END_OF_SOURCE + && loaderNextLoadPositionUs <= positionUs; + if (loaderNextLoadPositionUs == nextLoadPositionUs || isLoaderBehind) { + madeProgressThisIteration |= loader.continueLoading(positionUs); + } + } + madeProgress |= madeProgressThisIteration; + } while (madeProgressThisIteration); + return madeProgress; + } + + @Override + public boolean isLoading() { + for (SequenceableLoader loader : loaders) { + if (loader.isLoading()) { + return true; + } + } + return false; + } +} |