diff options
Diffstat (limited to 'mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/SubtitleDecoderFactory.java')
| -rw-r--r-- | mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/SubtitleDecoderFactory.java | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/SubtitleDecoderFactory.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/SubtitleDecoderFactory.java new file mode 100644 index 0000000000..2fb0200f0d --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/SubtitleDecoderFactory.java @@ -0,0 +1,126 @@ +/* + * 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.text; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.cea.Cea608Decoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.cea.Cea708Decoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.dvb.DvbDecoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.pgs.PgsDecoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.ssa.SsaDecoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.subrip.SubripDecoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.ttml.TtmlDecoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.tx3g.Tx3gDecoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.webvtt.Mp4WebvttDecoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.webvtt.WebvttDecoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; + +/** + * A factory for {@link SubtitleDecoder} instances. + */ +public interface SubtitleDecoderFactory { + + /** + * Returns whether the factory is able to instantiate a {@link SubtitleDecoder} for the given + * {@link Format}. + * + * @param format The {@link Format}. + * @return Whether the factory can instantiate a suitable {@link SubtitleDecoder}. + */ + boolean supportsFormat(Format format); + + /** + * Creates a {@link SubtitleDecoder} for the given {@link Format}. + * + * @param format The {@link Format}. + * @return A new {@link SubtitleDecoder}. + * @throws IllegalArgumentException If the {@link Format} is not supported. + */ + SubtitleDecoder createDecoder(Format format); + + /** + * Default {@link SubtitleDecoderFactory} implementation. + * + * <p>The formats supported by this factory are: + * + * <ul> + * <li>WebVTT ({@link WebvttDecoder}) + * <li>WebVTT (MP4) ({@link Mp4WebvttDecoder}) + * <li>TTML ({@link TtmlDecoder}) + * <li>SubRip ({@link SubripDecoder}) + * <li>SSA/ASS ({@link SsaDecoder}) + * <li>TX3G ({@link Tx3gDecoder}) + * <li>Cea608 ({@link Cea608Decoder}) + * <li>Cea708 ({@link Cea708Decoder}) + * <li>DVB ({@link DvbDecoder}) + * <li>PGS ({@link PgsDecoder}) + * </ul> + */ + SubtitleDecoderFactory DEFAULT = + new SubtitleDecoderFactory() { + + @Override + public boolean supportsFormat(Format format) { + @Nullable String mimeType = format.sampleMimeType; + return MimeTypes.TEXT_VTT.equals(mimeType) + || MimeTypes.TEXT_SSA.equals(mimeType) + || MimeTypes.APPLICATION_TTML.equals(mimeType) + || MimeTypes.APPLICATION_MP4VTT.equals(mimeType) + || MimeTypes.APPLICATION_SUBRIP.equals(mimeType) + || MimeTypes.APPLICATION_TX3G.equals(mimeType) + || MimeTypes.APPLICATION_CEA608.equals(mimeType) + || MimeTypes.APPLICATION_MP4CEA608.equals(mimeType) + || MimeTypes.APPLICATION_CEA708.equals(mimeType) + || MimeTypes.APPLICATION_DVBSUBS.equals(mimeType) + || MimeTypes.APPLICATION_PGS.equals(mimeType); + } + + @Override + public SubtitleDecoder createDecoder(Format format) { + @Nullable String mimeType = format.sampleMimeType; + if (mimeType != null) { + switch (mimeType) { + case MimeTypes.TEXT_VTT: + return new WebvttDecoder(); + case MimeTypes.TEXT_SSA: + return new SsaDecoder(format.initializationData); + case MimeTypes.APPLICATION_MP4VTT: + return new Mp4WebvttDecoder(); + case MimeTypes.APPLICATION_TTML: + return new TtmlDecoder(); + case MimeTypes.APPLICATION_SUBRIP: + return new SubripDecoder(); + case MimeTypes.APPLICATION_TX3G: + return new Tx3gDecoder(format.initializationData); + case MimeTypes.APPLICATION_CEA608: + case MimeTypes.APPLICATION_MP4CEA608: + return new Cea608Decoder(mimeType, format.accessibilityChannel); + case MimeTypes.APPLICATION_CEA708: + return new Cea708Decoder(format.accessibilityChannel, format.initializationData); + case MimeTypes.APPLICATION_DVBSUBS: + return new DvbDecoder(format.initializationData); + case MimeTypes.APPLICATION_PGS: + return new PgsDecoder(); + default: + break; + } + } + throw new IllegalArgumentException( + "Attempted to create decoder for unsupported MIME type: " + mimeType); + } + }; +} |