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/*
* 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.extractor.ts;
import org.mozilla.thirdparty.com.google.android.exoplayer2.C;
import org.mozilla.thirdparty.com.google.android.exoplayer2.Format;
import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorOutput;
import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.TrackOutput;
import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes;
import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray;
import org.mozilla.thirdparty.com.google.android.exoplayer2.util.TimestampAdjuster;
/**
* Parses splice info sections as defined by SCTE35.
*/
public final class SpliceInfoSectionReader implements SectionPayloadReader {
private TimestampAdjuster timestampAdjuster;
private TrackOutput output;
private boolean formatDeclared;
@Override
public void init(TimestampAdjuster timestampAdjuster, ExtractorOutput extractorOutput,
TsPayloadReader.TrackIdGenerator idGenerator) {
this.timestampAdjuster = timestampAdjuster;
idGenerator.generateNewId();
output = extractorOutput.track(idGenerator.getTrackId(), C.TRACK_TYPE_METADATA);
output.format(Format.createSampleFormat(idGenerator.getFormatId(), MimeTypes.APPLICATION_SCTE35,
null, Format.NO_VALUE, null));
}
@Override
public void consume(ParsableByteArray sectionData) {
if (!formatDeclared) {
if (timestampAdjuster.getTimestampOffsetUs() == C.TIME_UNSET) {
// There is not enough information to initialize the timestamp adjuster.
return;
}
output.format(Format.createSampleFormat(null, MimeTypes.APPLICATION_SCTE35,
timestampAdjuster.getTimestampOffsetUs()));
formatDeclared = true;
}
int sampleSize = sectionData.bytesLeft();
output.sampleData(sectionData, sampleSize);
output.sampleMetadata(timestampAdjuster.getLastAdjustedTimestampUs(), C.BUFFER_FLAG_KEY_FRAME,
sampleSize, 0, null);
}
}
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