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Create chunks from parts in HlsChunkSource
Issue: #5011 PiperOrigin-RevId: 342022947
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library/hls/src/main/java/com/google/android/exoplayer2/source/hls/HlsChunkSource.java
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...st/java/com/google/android/exoplayer2/source/hls/HlsMediaPlaylistSegmentIteratorTest.java
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| /* | ||
| * Copyright 2020 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 com.google.android.exoplayer2.source.hls; | ||
|
|
||
| import static com.google.common.truth.Truth.assertThat; | ||
| import static org.junit.Assert.fail; | ||
|
|
||
| import android.net.Uri; | ||
| import androidx.test.core.app.ApplicationProvider; | ||
| import androidx.test.ext.junit.runners.AndroidJUnit4; | ||
| import com.google.android.exoplayer2.C; | ||
| import com.google.android.exoplayer2.source.hls.playlist.HlsMediaPlaylist; | ||
| import com.google.android.exoplayer2.source.hls.playlist.HlsPlaylistParser; | ||
| import com.google.android.exoplayer2.testutil.TestUtil; | ||
| import com.google.android.exoplayer2.upstream.DataSpec; | ||
| import com.google.common.collect.Iterables; | ||
| import java.io.IOException; | ||
| import java.util.ArrayList; | ||
| import java.util.List; | ||
| import org.junit.Test; | ||
| import org.junit.runner.RunWith; | ||
|
|
||
| /** Unit test for {@link HlsChunkSource.HlsMediaPlaylistSegmentIterator}. */ | ||
| @RunWith(AndroidJUnit4.class) | ||
| public class HlsMediaPlaylistSegmentIteratorTest { | ||
|
|
||
| public static final String LOW_LATENCY_SEGMENTS_AND_PARTS = | ||
| "media/m3u8/live_low_latency_segments_and_parts"; | ||
| public static final String SEGMENTS_ONLY = "media/m3u8/live_low_latency_segments_only"; | ||
|
|
||
| @Test | ||
| public void create_withMediaSequenceBehindLiveWindow_isEmpty() { | ||
| HlsMediaPlaylist mediaPlaylist = getHlsMediaPlaylist(LOW_LATENCY_SEGMENTS_AND_PARTS); | ||
|
|
||
| HlsChunkSource.HlsMediaPlaylistSegmentIterator hlsMediaPlaylistSegmentIterator = | ||
| new HlsChunkSource.HlsMediaPlaylistSegmentIterator( | ||
| mediaPlaylist.baseUri, | ||
| /* startOfPlaylistInPeriodUs= */ 0, | ||
| HlsChunkSource.getSegmentBaseList( | ||
| mediaPlaylist, mediaPlaylist.mediaSequence - 1, /* partIndex= */ C.INDEX_UNSET)); | ||
|
|
||
| assertThat(hlsMediaPlaylistSegmentIterator.next()).isFalse(); | ||
| } | ||
|
|
||
| @Test | ||
| public void create_withMediaSequenceBeforeTrailingPartSegment_isEmpty() { | ||
| HlsMediaPlaylist mediaPlaylist = getHlsMediaPlaylist(LOW_LATENCY_SEGMENTS_AND_PARTS); | ||
|
|
||
| HlsChunkSource.HlsMediaPlaylistSegmentIterator hlsMediaPlaylistSegmentIterator = | ||
| new HlsChunkSource.HlsMediaPlaylistSegmentIterator( | ||
| mediaPlaylist.baseUri, | ||
| /* startOfPlaylistInPeriodUs= */ 0, | ||
| HlsChunkSource.getSegmentBaseList( | ||
| mediaPlaylist, | ||
| mediaPlaylist.mediaSequence + mediaPlaylist.segments.size() + 1, | ||
| /* partIndex= */ C.INDEX_UNSET)); | ||
|
|
||
| assertThat(hlsMediaPlaylistSegmentIterator.next()).isFalse(); | ||
| } | ||
|
|
||
| @Test | ||
| public void create_withPartIndexBeforeLastTrailingPartSegment_isEmpty() { | ||
| HlsMediaPlaylist mediaPlaylist = getHlsMediaPlaylist(LOW_LATENCY_SEGMENTS_AND_PARTS); | ||
|
|
||
| HlsChunkSource.HlsMediaPlaylistSegmentIterator hlsMediaPlaylistSegmentIterator = | ||
| new HlsChunkSource.HlsMediaPlaylistSegmentIterator( | ||
| mediaPlaylist.baseUri, | ||
| /* startOfPlaylistInPeriodUs= */ 0, | ||
| HlsChunkSource.getSegmentBaseList( | ||
| mediaPlaylist, | ||
| mediaPlaylist.mediaSequence + mediaPlaylist.segments.size(), | ||
| /* partIndex= */ 3)); | ||
|
|
||
| assertThat(hlsMediaPlaylistSegmentIterator.next()).isFalse(); | ||
| } | ||
|
|
||
| @Test | ||
| public void next_conventionalLiveStartIteratorAtSecondSegment_correctElements() { | ||
| HlsMediaPlaylist mediaPlaylist = getHlsMediaPlaylist(SEGMENTS_ONLY); | ||
| HlsChunkSource.HlsMediaPlaylistSegmentIterator hlsMediaPlaylistSegmentIterator = | ||
| new HlsChunkSource.HlsMediaPlaylistSegmentIterator( | ||
| mediaPlaylist.baseUri, | ||
| /* startOfPlaylistInPeriodUs= */ 0, | ||
| HlsChunkSource.getSegmentBaseList( | ||
| mediaPlaylist, /* mediaSequence= */ 11, /* partIndex= */ C.INDEX_UNSET)); | ||
|
|
||
| List<DataSpec> datasSpecs = new ArrayList<>(); | ||
| while (hlsMediaPlaylistSegmentIterator.next()) { | ||
| datasSpecs.add(hlsMediaPlaylistSegmentIterator.getDataSpec()); | ||
| } | ||
|
|
||
| assertThat(datasSpecs).hasSize(5); | ||
| assertThat(datasSpecs.get(0).uri.toString()).isEqualTo("fileSequence11.ts"); | ||
| assertThat(Iterables.getLast(datasSpecs).uri.toString()).isEqualTo("fileSequence15.ts"); | ||
| } | ||
|
|
||
| @Test | ||
| public void next_startIteratorAtFirstSegment_correctElements() { | ||
| HlsMediaPlaylist mediaPlaylist = getHlsMediaPlaylist(LOW_LATENCY_SEGMENTS_AND_PARTS); | ||
| HlsChunkSource.HlsMediaPlaylistSegmentIterator hlsMediaPlaylistSegmentIterator = | ||
| new HlsChunkSource.HlsMediaPlaylistSegmentIterator( | ||
| mediaPlaylist.baseUri, | ||
| /* startOfPlaylistInPeriodUs= */ 0, | ||
| HlsChunkSource.getSegmentBaseList( | ||
| mediaPlaylist, /* mediaSequence= */ 10, /* partIndex= */ C.INDEX_UNSET)); | ||
|
|
||
| List<DataSpec> datasSpecs = new ArrayList<>(); | ||
| while (hlsMediaPlaylistSegmentIterator.next()) { | ||
| datasSpecs.add(hlsMediaPlaylistSegmentIterator.getDataSpec()); | ||
| } | ||
|
|
||
| assertThat(datasSpecs).hasSize(9); | ||
| // The iterator starts with 6 segments. | ||
| assertThat(datasSpecs.get(0).uri.toString()).isEqualTo("fileSequence10.ts"); | ||
| // Followed by trailing parts. | ||
| assertThat(datasSpecs.get(6).uri.toString()).isEqualTo("fileSequence16.0.ts"); | ||
| // The preload part is the last. | ||
| assertThat(Iterables.getLast(datasSpecs).uri.toString()).isEqualTo("fileSequence16.2.ts"); | ||
| } | ||
|
|
||
| @Test | ||
| public void next_startIteratorAtFirstPartInaSegment_usesFullSegment() { | ||
| HlsMediaPlaylist mediaPlaylist = getHlsMediaPlaylist(LOW_LATENCY_SEGMENTS_AND_PARTS); | ||
| HlsChunkSource.HlsMediaPlaylistSegmentIterator hlsMediaPlaylistSegmentIterator = | ||
| new HlsChunkSource.HlsMediaPlaylistSegmentIterator( | ||
| mediaPlaylist.baseUri, | ||
| /* startOfPlaylistInPeriodUs= */ 0, | ||
| HlsChunkSource.getSegmentBaseList( | ||
| mediaPlaylist, /* mediaSequence= */ 14, /* partIndex= */ 0)); | ||
|
|
||
| List<DataSpec> datasSpecs = new ArrayList<>(); | ||
| while (hlsMediaPlaylistSegmentIterator.next()) { | ||
| datasSpecs.add(hlsMediaPlaylistSegmentIterator.getDataSpec()); | ||
| } | ||
|
|
||
| assertThat(datasSpecs).hasSize(5); | ||
| // The iterator starts with 6 segments. | ||
| assertThat(datasSpecs.get(0).uri.toString()).isEqualTo("fileSequence14.ts"); | ||
| assertThat(datasSpecs.get(1).uri.toString()).isEqualTo("fileSequence15.ts"); | ||
| // Followed by trailing parts. | ||
| assertThat(datasSpecs.get(2).uri.toString()).isEqualTo("fileSequence16.0.ts"); | ||
| assertThat(datasSpecs.get(3).uri.toString()).isEqualTo("fileSequence16.1.ts"); | ||
| // The preload part is the last. | ||
| assertThat(Iterables.getLast(datasSpecs).uri.toString()).isEqualTo("fileSequence16.2.ts"); | ||
| } | ||
|
|
||
| @Test | ||
| public void next_startIteratorAtTrailingPart_correctElements() { | ||
| HlsMediaPlaylist mediaPlaylist = getHlsMediaPlaylist(LOW_LATENCY_SEGMENTS_AND_PARTS); | ||
| HlsChunkSource.HlsMediaPlaylistSegmentIterator hlsMediaPlaylistSegmentIterator = | ||
| new HlsChunkSource.HlsMediaPlaylistSegmentIterator( | ||
| mediaPlaylist.baseUri, | ||
| /* startOfPlaylistInPeriodUs= */ 0, | ||
| HlsChunkSource.getSegmentBaseList( | ||
| mediaPlaylist, /* mediaSequence= */ 16, /* partIndex= */ 1)); | ||
|
|
||
| List<DataSpec> datasSpecs = new ArrayList<>(); | ||
| while (hlsMediaPlaylistSegmentIterator.next()) { | ||
| datasSpecs.add(hlsMediaPlaylistSegmentIterator.getDataSpec()); | ||
| } | ||
|
|
||
| assertThat(datasSpecs).hasSize(2); | ||
| // The iterator starts with 2 parts. | ||
| assertThat(datasSpecs.get(0).uri.toString()).isEqualTo("fileSequence16.1.ts"); | ||
| // The preload part is the last. | ||
| assertThat(Iterables.getLast(datasSpecs).uri.toString()).isEqualTo("fileSequence16.2.ts"); | ||
| } | ||
|
|
||
| @Test | ||
| public void next_startIteratorAtPartWithinSegment_correctElements() { | ||
| HlsMediaPlaylist mediaPlaylist = getHlsMediaPlaylist(LOW_LATENCY_SEGMENTS_AND_PARTS); | ||
| HlsChunkSource.HlsMediaPlaylistSegmentIterator hlsMediaPlaylistSegmentIterator = | ||
| new HlsChunkSource.HlsMediaPlaylistSegmentIterator( | ||
| mediaPlaylist.baseUri, | ||
| /* startOfPlaylistInPeriodUs= */ 0, | ||
| HlsChunkSource.getSegmentBaseList( | ||
| mediaPlaylist, /* mediaSequence= */ 14, /* partIndex= */ 1)); | ||
|
|
||
| List<DataSpec> datasSpecs = new ArrayList<>(); | ||
| while (hlsMediaPlaylistSegmentIterator.next()) { | ||
| datasSpecs.add(hlsMediaPlaylistSegmentIterator.getDataSpec()); | ||
| } | ||
|
|
||
| assertThat(datasSpecs).hasSize(7); | ||
| // The iterator starts with 11 parts. | ||
| assertThat(datasSpecs.get(0).uri.toString()).isEqualTo("fileSequence14.1.ts"); | ||
| assertThat(datasSpecs.get(1).uri.toString()).isEqualTo("fileSequence14.2.ts"); | ||
| assertThat(datasSpecs.get(2).uri.toString()).isEqualTo("fileSequence14.3.ts"); | ||
| // Use a segment in between if possible. | ||
| assertThat(datasSpecs.get(3).uri.toString()).isEqualTo("fileSequence15.ts"); | ||
| // Then parts again. | ||
| assertThat(datasSpecs.get(4).uri.toString()).isEqualTo("fileSequence16.0.ts"); | ||
| assertThat(datasSpecs.get(5).uri.toString()).isEqualTo("fileSequence16.1.ts"); | ||
| assertThat(datasSpecs.get(6).uri.toString()).isEqualTo("fileSequence16.2.ts"); | ||
| } | ||
|
|
||
| private static HlsMediaPlaylist getHlsMediaPlaylist(String file) { | ||
| try { | ||
| return (HlsMediaPlaylist) | ||
| new HlsPlaylistParser() | ||
| .parse( | ||
| Uri.EMPTY, | ||
| TestUtil.getInputStream(ApplicationProvider.getApplicationContext(), file)); | ||
| } catch (IOException e) { | ||
| fail(e.getMessage()); | ||
| } | ||
| return null; | ||
| } | ||
| } |
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