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Issue:google#2748 ------------- Created by MOE: https://github.com/google/moe MOE_MIGRATED_REVID=172726367
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106 changes: 106 additions & 0 deletions
106
...ls/src/main/java/com/google/android/exoplayer2/source/hls/DefaultHlsExtractorFactory.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,106 @@ | ||
| /* | ||
| * Copyright (C) 2017 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 android.net.Uri; | ||
| import android.text.TextUtils; | ||
| import android.util.Pair; | ||
| import com.google.android.exoplayer2.Format; | ||
| import com.google.android.exoplayer2.drm.DrmInitData; | ||
| import com.google.android.exoplayer2.extractor.Extractor; | ||
| import com.google.android.exoplayer2.extractor.mp3.Mp3Extractor; | ||
| import com.google.android.exoplayer2.extractor.mp4.FragmentedMp4Extractor; | ||
| import com.google.android.exoplayer2.extractor.ts.Ac3Extractor; | ||
| import com.google.android.exoplayer2.extractor.ts.AdtsExtractor; | ||
| import com.google.android.exoplayer2.extractor.ts.DefaultTsPayloadReaderFactory; | ||
| import com.google.android.exoplayer2.extractor.ts.TsExtractor; | ||
| import com.google.android.exoplayer2.util.MimeTypes; | ||
| import com.google.android.exoplayer2.util.TimestampAdjuster; | ||
| import java.util.Collections; | ||
| import java.util.List; | ||
|
|
||
| /** | ||
| * Default {@link HlsExtractorFactory} implementation. | ||
| * | ||
| * <p>This class can be extended to override {@link TsExtractor} instantiation.</p> | ||
| */ | ||
| public final class DefaultHlsExtractorFactory implements HlsExtractorFactory { | ||
|
|
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| public static final String AAC_FILE_EXTENSION = ".aac"; | ||
| public static final String AC3_FILE_EXTENSION = ".ac3"; | ||
| public static final String EC3_FILE_EXTENSION = ".ec3"; | ||
| public static final String MP3_FILE_EXTENSION = ".mp3"; | ||
| public static final String MP4_FILE_EXTENSION = ".mp4"; | ||
| public static final String M4_FILE_EXTENSION_PREFIX = ".m4"; | ||
| public static final String VTT_FILE_EXTENSION = ".vtt"; | ||
| public static final String WEBVTT_FILE_EXTENSION = ".webvtt"; | ||
|
|
||
| @Override | ||
| public Pair<Extractor, Boolean> createExtractor(Extractor previousExtractor, Uri uri, | ||
| Format format, List<Format> muxedCaptionFormats, DrmInitData drmInitData, | ||
| TimestampAdjuster timestampAdjuster) { | ||
| String lastPathSegment = uri.getLastPathSegment(); | ||
| boolean isPackedAudioExtractor = false; | ||
| Extractor extractor; | ||
| if (MimeTypes.TEXT_VTT.equals(format.sampleMimeType) | ||
| || lastPathSegment.endsWith(WEBVTT_FILE_EXTENSION) | ||
| || lastPathSegment.endsWith(VTT_FILE_EXTENSION)) { | ||
| extractor = new WebvttExtractor(format.language, timestampAdjuster); | ||
| } else if (lastPathSegment.endsWith(AAC_FILE_EXTENSION)) { | ||
| isPackedAudioExtractor = true; | ||
| extractor = new AdtsExtractor(); | ||
| } else if (lastPathSegment.endsWith(AC3_FILE_EXTENSION) | ||
| || lastPathSegment.endsWith(EC3_FILE_EXTENSION)) { | ||
| isPackedAudioExtractor = true; | ||
| extractor = new Ac3Extractor(); | ||
| } else if (lastPathSegment.endsWith(MP3_FILE_EXTENSION)) { | ||
| isPackedAudioExtractor = true; | ||
| extractor = new Mp3Extractor(0, 0); | ||
| } else if (previousExtractor != null) { | ||
| // Only reuse TS and fMP4 extractors. | ||
| extractor = previousExtractor; | ||
| } else if (lastPathSegment.endsWith(MP4_FILE_EXTENSION) | ||
| || lastPathSegment.startsWith(M4_FILE_EXTENSION_PREFIX, lastPathSegment.length() - 4)) { | ||
| extractor = new FragmentedMp4Extractor(0, timestampAdjuster, null, drmInitData); | ||
| } else { | ||
| // For any other file extension, we assume TS format. | ||
| @DefaultTsPayloadReaderFactory.Flags | ||
| int esReaderFactoryFlags = DefaultTsPayloadReaderFactory.FLAG_IGNORE_SPLICE_INFO_STREAM; | ||
| if (muxedCaptionFormats != null) { | ||
| // The playlist declares closed caption renditions, we should ignore descriptors. | ||
| esReaderFactoryFlags |= DefaultTsPayloadReaderFactory.FLAG_OVERRIDE_CAPTION_DESCRIPTORS; | ||
| } else { | ||
| muxedCaptionFormats = Collections.emptyList(); | ||
| } | ||
| String codecs = format.codecs; | ||
| if (!TextUtils.isEmpty(codecs)) { | ||
| // Sometimes AAC and H264 streams are declared in TS chunks even though they don't really | ||
| // exist. If we know from the codec attribute that they don't exist, then we can | ||
| // explicitly ignore them even if they're declared. | ||
| if (!MimeTypes.AUDIO_AAC.equals(MimeTypes.getAudioMediaMimeType(codecs))) { | ||
| esReaderFactoryFlags |= DefaultTsPayloadReaderFactory.FLAG_IGNORE_AAC_STREAM; | ||
| } | ||
| if (!MimeTypes.VIDEO_H264.equals(MimeTypes.getVideoMediaMimeType(codecs))) { | ||
| esReaderFactoryFlags |= DefaultTsPayloadReaderFactory.FLAG_IGNORE_H264_STREAM; | ||
| } | ||
| } | ||
| extractor = new TsExtractor(TsExtractor.MODE_HLS, timestampAdjuster, | ||
| new DefaultTsPayloadReaderFactory(esReaderFactoryFlags, muxedCaptionFormats)); | ||
| } | ||
| return Pair.create(extractor, isPackedAudioExtractor); | ||
| } | ||
|
|
||
| } |
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53 changes: 53 additions & 0 deletions
53
library/hls/src/main/java/com/google/android/exoplayer2/source/hls/HlsExtractorFactory.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,53 @@ | ||
| /* | ||
| * Copyright (C) 2017 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 android.net.Uri; | ||
| import android.util.Pair; | ||
| import com.google.android.exoplayer2.Format; | ||
| import com.google.android.exoplayer2.drm.DrmInitData; | ||
| import com.google.android.exoplayer2.extractor.Extractor; | ||
| import com.google.android.exoplayer2.util.TimestampAdjuster; | ||
| import java.util.List; | ||
|
|
||
| /** | ||
| * Factory for HLS media chunk extractors. | ||
| */ | ||
| public interface HlsExtractorFactory { | ||
|
|
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| HlsExtractorFactory DEFAULT = new DefaultHlsExtractorFactory(); | ||
|
|
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| /** | ||
| * Creates an {@link Extractor} for extracting HLS media chunks. | ||
| * | ||
| * @param previousExtractor A previously used {@link Extractor} which can be reused if the current | ||
| * chunk is a continuation of the previously extracted chunk, or null otherwise. It is the | ||
| * responsibility of implementers to only reuse extractors that are suited for reusage. | ||
| * @param uri The URI of the media chunk. | ||
| * @param format A {@link Format} associated with the chunk to extract. | ||
| * @param muxedCaptionFormats List of muxed caption {@link Format}s. Null if no closed caption | ||
| * information is available in the master playlist. | ||
| * @param drmInitData {@link DrmInitData} associated with the chunk. | ||
| * @param timestampAdjuster Adjuster corresponding to the provided discontinuity sequence number. | ||
| * @return A pair containing the {@link Extractor} and a boolean that indicates whether it is a | ||
| * packed audio extractor. The first element may be {@code previousExtractor} if the factory | ||
| * has determined it can be re-used. | ||
| */ | ||
| Pair<Extractor, Boolean> createExtractor(Extractor previousExtractor, Uri uri, Format format, | ||
| List<Format> muxedCaptionFormats, DrmInitData drmInitData, | ||
| TimestampAdjuster timestampAdjuster); | ||
|
|
||
| } |
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