diff options
Diffstat (limited to 'mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/scte35/TimeSignalCommand.java')
-rw-r--r-- | mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/scte35/TimeSignalCommand.java | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/scte35/TimeSignalCommand.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/scte35/TimeSignalCommand.java new file mode 100644 index 0000000000..f50a029f1b --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/scte35/TimeSignalCommand.java @@ -0,0 +1,93 @@ +/* + * 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.metadata.scte35; + +import android.os.Parcel; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.TimestampAdjuster; + +/** + * Represents a time signal command as defined in SCTE35, Section 9.3.4. + */ +public final class TimeSignalCommand extends SpliceCommand { + + /** + * A PTS value, as defined in SCTE35, Section 9.3.4. + */ + public final long ptsTime; + /** + * Equivalent to {@link #ptsTime} but in the playback timebase. + */ + public final long playbackPositionUs; + + private TimeSignalCommand(long ptsTime, long playbackPositionUs) { + this.ptsTime = ptsTime; + this.playbackPositionUs = playbackPositionUs; + } + + /* package */ static TimeSignalCommand parseFromSection(ParsableByteArray sectionData, + long ptsAdjustment, TimestampAdjuster timestampAdjuster) { + long ptsTime = parseSpliceTime(sectionData, ptsAdjustment); + long playbackPositionUs = timestampAdjuster.adjustTsTimestamp(ptsTime); + return new TimeSignalCommand(ptsTime, playbackPositionUs); + } + + /** + * Parses pts_time from splice_time(), defined in Section 9.4.1. Returns {@link C#TIME_UNSET}, if + * time_specified_flag is false. + * + * @param sectionData The section data from which the pts_time is parsed. + * @param ptsAdjustment The pts adjustment provided by the splice info section header. + * @return The pts_time defined by splice_time(), or {@link C#TIME_UNSET}, if time_specified_flag + * is false. + */ + /* package */ static long parseSpliceTime(ParsableByteArray sectionData, long ptsAdjustment) { + long firstByte = sectionData.readUnsignedByte(); + long ptsTime = C.TIME_UNSET; + if ((firstByte & 0x80) != 0 /* time_specified_flag */) { + // See SCTE35 9.2.1 for more information about pts adjustment. + ptsTime = (firstByte & 0x01) << 32 | sectionData.readUnsignedInt(); + ptsTime += ptsAdjustment; + ptsTime &= 0x1FFFFFFFFL; + } + return ptsTime; + } + + // Parcelable implementation. + + @Override + public void writeToParcel(Parcel dest, int flags) { + dest.writeLong(ptsTime); + dest.writeLong(playbackPositionUs); + } + + public static final Creator<TimeSignalCommand> CREATOR = + new Creator<TimeSignalCommand>() { + + @Override + public TimeSignalCommand createFromParcel(Parcel in) { + return new TimeSignalCommand(in.readLong(), in.readLong()); + } + + @Override + public TimeSignalCommand[] newArray(int size) { + return new TimeSignalCommand[size]; + } + + }; + +} |