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Add support for multiple programs in a single TS

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* Prevents calling endTracks() before all PMTs have been
  processed.
* Adds a unique ID to the format of each track. This allows
  the track selector to identify which track belongs to
  each program. The format of each id is
  "<program number>/<track output id>".

Note: This CL will break malformed TS files whose PAT
declares more PMTs than it actually contains, which
previously were supported. This does not apply for HLS
mode.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=146151642
This commit is contained in:
aquilescanta 2017-01-31 12:33:43 -08:00 committed by Oliver Woodman
parent 4301606200
commit feeec77407
18 changed files with 175 additions and 73 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
library/src/androidTest/assets/ts/sample.ac3.0.dump
View File

@ -6,7 +6,7 @@ numberOfTracks = 1
track 0:
format:
bitrate = -1
id = null
id = 0
containerMimeType = null
sampleMimeType = audio/ac3
maxInputSize = -1

4
library/src/androidTest/assets/ts/sample.adts.0.dump
View File

@ -6,7 +6,7 @@ numberOfTracks = 2
track 0:
format:
bitrate = -1
id = null
id = 0
containerMimeType = null
sampleMimeType = audio/mp4a-latm
maxInputSize = -1
@ -606,7 +606,7 @@ track 0:
track 1:
format:
bitrate = -1
id = null
id = 1
containerMimeType = null
sampleMimeType = application/id3
maxInputSize = -1

4
library/src/androidTest/assets/ts/sample.ps.0.dump
View File

@ -6,7 +6,7 @@ numberOfTracks = 2
track 192:
format:
bitrate = -1
id = null
id = 192
containerMimeType = null
sampleMimeType = audio/mpeg-L2
maxInputSize = 4096
@ -45,7 +45,7 @@ track 192:
track 224:
format:
bitrate = -1
id = null
id = 224
containerMimeType = null
sampleMimeType = video/mpeg2
maxInputSize = -1

4
library/src/androidTest/assets/ts/sample.ts.0.dump
View File

@ -6,7 +6,7 @@ numberOfTracks = 2
track 256:
format:
bitrate = -1
id = null
id = 1/256
containerMimeType = null
sampleMimeType = video/mpeg2
maxInputSize = -1
@ -38,7 +38,7 @@ track 256:
track 257:
format:
bitrate = -1
id = null
id = 1/257
containerMimeType = null
sampleMimeType = audio/mpeg-L2
maxInputSize = 4096

7
library/src/androidTest/java/com/google/android/exoplayer2/extractor/ts/TsExtractorTest.java
View File

@ -92,7 +92,7 @@ public final class TsExtractorTest extends InstrumentationTestCase {
TrackOutput trackOutput = reader.getTrackOutput();
assertTrue(trackOutput == output.trackOutputs.get(257 /* PID of audio track. */));
assertEquals(
Format.createTextSampleFormat("Overriding format", "mime", null, 0, 0, "und", null, 0),
Format.createTextSampleFormat("1/257", "mime", null, 0, 0, "und", null, 0),
((FakeTrackOutput) trackOutput).format);
}
@ -178,8 +178,9 @@ public final class TsExtractorTest extends InstrumentationTestCase {
@Override
public void createTracks(ExtractorOutput extractorOutput, TrackIdGenerator idGenerator) {
output = extractorOutput.track(idGenerator.getNextId());
output.format(Format.createTextSampleFormat("Overriding format", "mime", null, 0, 0,
idGenerator.generateNewId();
output = extractorOutput.track(idGenerator.getTrackId());
output.format(Format.createTextSampleFormat(idGenerator.getFormatId(), "mime", null, 0, 0,
language, null, 0));
}

10
library/src/main/java/com/google/android/exoplayer2/extractor/ts/Ac3Reader.java
View File

@ -39,6 +39,7 @@ import com.google.android.exoplayer2.util.ParsableByteArray;
private final ParsableByteArray headerScratchBytes;
private final String language;
private String trackFormatId;
private TrackOutput output;
private int state;
@ -84,7 +85,9 @@ import com.google.android.exoplayer2.util.ParsableByteArray;
@Override
public void createTracks(ExtractorOutput extractorOutput, TrackIdGenerator generator) {
output = extractorOutput.track(generator.getNextId());
generator.generateNewId();
trackFormatId = generator.getFormatId();
output = extractorOutput.track(generator.getTrackId());
}
@Override
@ -180,8 +183,9 @@ import com.google.android.exoplayer2.util.ParsableByteArray;
headerScratchBits.skipBits(40);
isEac3 = headerScratchBits.readBits(5) == 16;
headerScratchBits.setPosition(headerScratchBits.getPosition() - 45);
format = isEac3 ? Ac3Util.parseEac3SyncframeFormat(headerScratchBits, null, language , null)
: Ac3Util.parseAc3SyncframeFormat(headerScratchBits, null, language, null);
format = isEac3
? Ac3Util.parseEac3SyncframeFormat(headerScratchBits, trackFormatId, language , null)
: Ac3Util.parseAc3SyncframeFormat(headerScratchBits, trackFormatId, language, null);
output.format(format);
}
sampleSize = isEac3 ? Ac3Util.parseEAc3SyncframeSize(headerScratchBits.data)

14
library/src/main/java/com/google/android/exoplayer2/extractor/ts/AdtsReader.java
View File

@ -61,6 +61,7 @@ import java.util.Collections;
private final ParsableByteArray id3HeaderBuffer;
private final String language;
private String formatId;
private TrackOutput output;
private TrackOutput id3Output;
@ -108,11 +109,14 @@ import java.util.Collections;
@Override
public void createTracks(ExtractorOutput extractorOutput, TrackIdGenerator idGenerator) {
output = extractorOutput.track(idGenerator.getNextId());
idGenerator.generateNewId();
formatId = idGenerator.getFormatId();
output = extractorOutput.track(idGenerator.getTrackId());
if (exposeId3) {
id3Output = extractorOutput.track(idGenerator.getNextId());
id3Output.format(Format.createSampleFormat(null, MimeTypes.APPLICATION_ID3, null,
Format.NO_VALUE, null));
idGenerator.generateNewId();
id3Output = extractorOutput.track(idGenerator.getTrackId());
id3Output.format(Format.createSampleFormat(idGenerator.getFormatId(),
MimeTypes.APPLICATION_ID3, null, Format.NO_VALUE, null));
} else {
id3Output = new DummyTrackOutput();
}
@ -300,7 +304,7 @@ import java.util.Collections;
Pair<Integer, Integer> audioParams = CodecSpecificDataUtil.parseAacAudioSpecificConfig(
audioSpecificConfig);
Format format = Format.createAudioSampleFormat(null, MimeTypes.AUDIO_AAC, null,
Format format = Format.createAudioSampleFormat(formatId, MimeTypes.AUDIO_AAC, null,
Format.NO_VALUE, Format.NO_VALUE, audioParams.second, audioParams.first,
Collections.singletonList(audioSpecificConfig), null, 0, language);
// In this class a sample is an access unit, but the MediaFormat sample rate specifies the

7
library/src/main/java/com/google/android/exoplayer2/extractor/ts/DtsReader.java
View File

@ -39,6 +39,7 @@ import com.google.android.exoplayer2.util.ParsableByteArray;
private final ParsableByteArray headerScratchBytes;
private final String language;
private String formatId;
private TrackOutput output;
private int state;
@ -79,7 +80,9 @@ import com.google.android.exoplayer2.util.ParsableByteArray;
@Override
public void createTracks(ExtractorOutput extractorOutput, TrackIdGenerator idGenerator) {
output = extractorOutput.track(idGenerator.getNextId());
idGenerator.generateNewId();
formatId = idGenerator.getFormatId();
output = extractorOutput.track(idGenerator.getTrackId());
}
@Override
@ -165,7 +168,7 @@ import com.google.android.exoplayer2.util.ParsableByteArray;
private void parseHeader() {
byte[] frameData = headerScratchBytes.data;
if (format == null) {
format = DtsUtil.parseDtsFormat(frameData, null, language, null);
format = DtsUtil.parseDtsFormat(frameData, formatId, language, null);
output.format(format);
}
sampleSize = DtsUtil.getDtsFrameSize(frameData);

12
library/src/main/java/com/google/android/exoplayer2/extractor/ts/H262Reader.java
View File

@ -37,6 +37,7 @@ import java.util.Collections;
private static final int START_EXTENSION = 0xB5;
private static final int START_GROUP = 0xB8;
private String formatId;
private TrackOutput output;
// Maps (frame_rate_code - 1) indices to values, as defined in ITU-T H.262 Table 6-4.
@ -78,7 +79,9 @@ import java.util.Collections;
@Override
public void createTracks(ExtractorOutput extractorOutput, TrackIdGenerator idGenerator) {
output = extractorOutput.track(idGenerator.getNextId());
idGenerator.generateNewId();
formatId = idGenerator.getFormatId();
output = extractorOutput.track(idGenerator.getTrackId());
}
@Override
@ -126,7 +129,7 @@ import java.util.Collections;
int bytesAlreadyPassed = lengthToStartCode < 0 ? -lengthToStartCode : 0;
if (csdBuffer.onStartCode(startCodeValue, bytesAlreadyPassed)) {
// The csd data is complete, so we can decode and output the media format.
Pair<Format, Long> result = parseCsdBuffer(csdBuffer);
Pair<Format, Long> result = parseCsdBuffer(csdBuffer, formatId);
output.format(result.first);
frameDurationUs = result.second;
hasOutputFormat = true;
@ -166,10 +169,11 @@ import java.util.Collections;
* Parses the {@link Format} and frame duration from a csd buffer.
*
* @param csdBuffer The csd buffer.
* @param formatId The id for the generated format. May be null.
* @return A pair consisting of the {@link Format} and the frame duration in microseconds, or
* 0 if the duration could not be determined.
*/
private static Pair<Format, Long> parseCsdBuffer(CsdBuffer csdBuffer) {
private static Pair<Format, Long> parseCsdBuffer(CsdBuffer csdBuffer, String formatId) {
byte[] csdData = Arrays.copyOf(csdBuffer.data, csdBuffer.length);
int firstByte = csdData[4] & 0xFF;
@ -195,7 +199,7 @@ import java.util.Collections;
break;
}
Format format = Format.createVideoSampleFormat(null, MimeTypes.VIDEO_MPEG2, null,
Format format = Format.createVideoSampleFormat(formatId, MimeTypes.VIDEO_MPEG2, null,
Format.NO_VALUE, Format.NO_VALUE, width, height, Format.NO_VALUE,
Collections.singletonList(csdData), Format.NO_VALUE, pixelWidthHeightRatio, null);

11
library/src/main/java/com/google/android/exoplayer2/extractor/ts/H264Reader.java
View File

@ -47,6 +47,7 @@ import java.util.List;
private long totalBytesWritten;
private final boolean[] prefixFlags;
private String formatId;
private TrackOutput output;
private SeiReader seiReader;
private SampleReader sampleReader;
@ -88,9 +89,13 @@ import java.util.List;
@Override
public void createTracks(ExtractorOutput extractorOutput, TrackIdGenerator idGenerator) {
output = extractorOutput.track(idGenerator.getNextId());
idGenerator.generateNewId();
formatId = idGenerator.getFormatId();
output = extractorOutput.track(idGenerator.getTrackId());
sampleReader = new SampleReader(output, allowNonIdrKeyframes, detectAccessUnits);
seiReader = new SeiReader(extractorOutput.track(idGenerator.getNextId()));
idGenerator.generateNewId();
seiReader = new SeiReader(extractorOutput.track(idGenerator.getTrackId()),
idGenerator.getFormatId());
}
@Override
@ -175,7 +180,7 @@ import java.util.List;
initializationData.add(Arrays.copyOf(pps.nalData, pps.nalLength));
NalUnitUtil.SpsData spsData = NalUnitUtil.parseSpsNalUnit(sps.nalData, 3, sps.nalLength);
NalUnitUtil.PpsData ppsData = NalUnitUtil.parsePpsNalUnit(pps.nalData, 3, pps.nalLength);
output.format(Format.createVideoSampleFormat(null, MimeTypes.VIDEO_H264, null,
output.format(Format.createVideoSampleFormat(formatId, MimeTypes.VIDEO_H264, null,
Format.NO_VALUE, Format.NO_VALUE, spsData.width, spsData.height, Format.NO_VALUE,
initializationData, Format.NO_VALUE, spsData.pixelWidthAspectRatio, null));
hasOutputFormat = true;

17
library/src/main/java/com/google/android/exoplayer2/extractor/ts/H265Reader.java
View File

@ -44,6 +44,7 @@ import java.util.Collections;
private static final int PREFIX_SEI_NUT = 39;
private static final int SUFFIX_SEI_NUT = 40;
private String formatId;
private TrackOutput output;
private SampleReader sampleReader;
private SeiReader seiReader;
@ -90,9 +91,13 @@ import java.util.Collections;
@Override
public void createTracks(ExtractorOutput extractorOutput, TrackIdGenerator idGenerator) {
output = extractorOutput.track(idGenerator.getNextId());
idGenerator.generateNewId();
formatId = idGenerator.getFormatId();
output = extractorOutput.track(idGenerator.getTrackId());
sampleReader = new SampleReader(output);
seiReader = new SeiReader(extractorOutput.track(idGenerator.getNextId()));
idGenerator.generateNewId();
seiReader = new SeiReader(extractorOutput.track(idGenerator.getTrackId()),
idGenerator.getFormatId());
}
@Override
@ -183,7 +188,7 @@ import java.util.Collections;
sps.endNalUnit(discardPadding);
pps.endNalUnit(discardPadding);
if (vps.isCompleted() && sps.isCompleted() && pps.isCompleted()) {
output.format(parseMediaFormat(vps, sps, pps));
output.format(parseMediaFormat(formatId, vps, sps, pps));
hasOutputFormat = true;
}
}
@ -205,8 +210,8 @@ import java.util.Collections;
}
}
private static Format parseMediaFormat(NalUnitTargetBuffer vps, NalUnitTargetBuffer sps,
NalUnitTargetBuffer pps) {
private static Format parseMediaFormat(String formatId, NalUnitTargetBuffer vps,
NalUnitTargetBuffer sps, NalUnitTargetBuffer pps) {
// Build codec-specific data.
byte[] csd = new byte[vps.nalLength + sps.nalLength + pps.nalLength];
System.arraycopy(vps.nalData, 0, csd, 0, vps.nalLength);
@ -311,7 +316,7 @@ import java.util.Collections;
}
}
return Format.createVideoSampleFormat(null, MimeTypes.VIDEO_H265, null, Format.NO_VALUE,
return Format.createVideoSampleFormat(formatId, MimeTypes.VIDEO_H265, null, Format.NO_VALUE,
Format.NO_VALUE, picWidthInLumaSamples, picHeightInLumaSamples, Format.NO_VALUE,
Collections.singletonList(csd), Format.NO_VALUE, pixelWidthHeightRatio, null);
}

7
library/src/main/java/com/google/android/exoplayer2/extractor/ts/Id3Reader.java
View File

@ -56,9 +56,10 @@ import com.google.android.exoplayer2.util.ParsableByteArray;
@Override
public void createTracks(ExtractorOutput extractorOutput, TrackIdGenerator idGenerator) {
output = extractorOutput.track(idGenerator.getNextId());
output.format(Format.createSampleFormat(null, MimeTypes.APPLICATION_ID3, null, Format.NO_VALUE,
null));
idGenerator.generateNewId();
output = extractorOutput.track(idGenerator.getTrackId());
output.format(Format.createSampleFormat(idGenerator.getFormatId(), MimeTypes.APPLICATION_ID3,
null, Format.NO_VALUE, null));
}
@Override

11
library/src/main/java/com/google/android/exoplayer2/extractor/ts/MpegAudioReader.java
View File

@ -38,6 +38,7 @@ import com.google.android.exoplayer2.util.ParsableByteArray;
private final MpegAudioHeader header;
private final String language;
private String formatId;
private TrackOutput output;
private int state;
@ -76,7 +77,9 @@ import com.google.android.exoplayer2.util.ParsableByteArray;
@Override
public void createTracks(ExtractorOutput extractorOutput, TrackIdGenerator idGenerator) {
output = extractorOutput.track(idGenerator.getNextId());
idGenerator.generateNewId();
formatId = idGenerator.getFormatId();
output = extractorOutput.track(idGenerator.getTrackId());
}
@Override
@ -176,9 +179,9 @@ import com.google.android.exoplayer2.util.ParsableByteArray;
frameSize = header.frameSize;
if (!hasOutputFormat) {
frameDurationUs = (C.MICROS_PER_SECOND * header.samplesPerFrame) / header.sampleRate;
Format format = Format.createAudioSampleFormat(null, header.mimeType, null, Format.NO_VALUE,
MpegAudioHeader.MAX_FRAME_SIZE_BYTES, header.channels, header.sampleRate, null, null, 0,
language);
Format format = Format.createAudioSampleFormat(formatId, header.mimeType, null,
Format.NO_VALUE, MpegAudioHeader.MAX_FRAME_SIZE_BYTES, header.channels, header.sampleRate,
null, null, 0, language);
output.format(format);
hasOutputFormat = true;
}

4
library/src/main/java/com/google/android/exoplayer2/extractor/ts/SeiReader.java
View File

@ -28,9 +28,9 @@ import com.google.android.exoplayer2.util.ParsableByteArray;
private final TrackOutput output;
public SeiReader(TrackOutput output) {
public SeiReader(TrackOutput output, String formatId) {
this.output = output;
output.format(Format.createTextSampleFormat(null, MimeTypes.APPLICATION_CEA608, null,
output.format(Format.createTextSampleFormat(formatId, MimeTypes.APPLICATION_CEA608, null,
Format.NO_VALUE, 0, null, null));
}

7
library/src/main/java/com/google/android/exoplayer2/extractor/ts/SpliceInfoSectionReader.java
View File

@ -36,9 +36,10 @@ public final class SpliceInfoSectionReader implements SectionPayloadReader {
public void init(TimestampAdjuster timestampAdjuster, ExtractorOutput extractorOutput,
TsPayloadReader.TrackIdGenerator idGenerator) {
this.timestampAdjuster = timestampAdjuster;
output = extractorOutput.track(idGenerator.getNextId());
output.format(Format.createSampleFormat(null, MimeTypes.APPLICATION_SCTE35, null,
Format.NO_VALUE, null));
idGenerator.generateNewId();
output = extractorOutput.track(idGenerator.getTrackId());
output.format(Format.createSampleFormat(idGenerator.getFormatId(), MimeTypes.APPLICATION_SCTE35,
null, Format.NO_VALUE, null));
}
@Override

63
library/src/main/java/com/google/android/exoplayer2/extractor/ts/TsExtractor.java
View File

@ -34,7 +34,10 @@ import com.google.android.exoplayer2.util.ParsableByteArray;
import com.google.android.exoplayer2.util.TimestampAdjuster;
import com.google.android.exoplayer2.util.Util;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
/**
* Facilitates the extraction of data from the MPEG-2 TS container format.
@ -79,7 +82,7 @@ public final class TsExtractor implements Extractor {
private static final int BUFFER_SIZE = TS_PACKET_SIZE * BUFFER_PACKET_COUNT;
private final boolean hlsMode;
private final TimestampAdjuster timestampAdjuster;
private final List<TimestampAdjuster> timestampAdjusters;
private final ParsableByteArray tsPacketBuffer;
private final ParsableBitArray tsScratch;
private final SparseIntArray continuityCounters;
@ -89,18 +92,12 @@ public final class TsExtractor implements Extractor {
// Accessed only by the loading thread.
private ExtractorOutput output;
private int remainingPmts;
private boolean tracksEnded;
private TsPayloadReader id3Reader;
public TsExtractor() {
this(new TimestampAdjuster(0));
}
/**
* @param timestampAdjuster A timestamp adjuster for offsetting and scaling sample timestamps.
*/
public TsExtractor(TimestampAdjuster timestampAdjuster) {
this(timestampAdjuster, new DefaultTsPayloadReaderFactory(), false);
this(new TimestampAdjuster(0), new DefaultTsPayloadReaderFactory(), false);
}
/**
@ -111,7 +108,12 @@ public final class TsExtractor implements Extractor {
*/
public TsExtractor(TimestampAdjuster timestampAdjuster,
TsPayloadReader.Factory payloadReaderFactory, boolean hlsMode) {
this.timestampAdjuster = timestampAdjuster;
if (hlsMode) {
timestampAdjusters = Collections.singletonList(timestampAdjuster);
} else {
timestampAdjusters = new ArrayList<>();
timestampAdjusters.add(timestampAdjuster);
}
this.payloadReaderFactory = Assertions.checkNotNull(payloadReaderFactory);
this.hlsMode = hlsMode;
tsPacketBuffer = new ParsableByteArray(BUFFER_SIZE);
@ -150,7 +152,10 @@ public final class TsExtractor implements Extractor {
@Override
public void seek(long position, long timeUs) {
timestampAdjuster.reset();
int timestampAdjustersCount = timestampAdjusters.size();
for (int i = 0; i < timestampAdjustersCount; i++) {
timestampAdjusters.get(i).reset();
}
tsPacketBuffer.reset();
continuityCounters.clear();
// Elementary stream readers' state should be cleared to get consistent behaviours when seeking.
@ -307,8 +312,12 @@ public final class TsExtractor implements Extractor {
} else {
int pid = patScratch.readBits(13);
tsPayloadReaders.put(pid, new SectionReader(new PmtReader(pid)));
remainingPmts++;
}
}
if (!hlsMode) {
tsPayloadReaders.remove(TS_PAT_PID);
}
}
}
@ -345,10 +354,21 @@ public final class TsExtractor implements Extractor {
// See ISO/IEC 13818-1, section 2.4.4.4 for more information on table id assignment.
return;
}
// section_syntax_indicator(1), '0'(1), reserved(2), section_length(12), program_number (16),
// reserved (2), version_number (5), current_next_indicator (1), // section_number (8),
// TimestampAdjuster assignment.
TimestampAdjuster timestampAdjuster;
if (hlsMode || remainingPmts == 1) {
timestampAdjuster = timestampAdjusters.get(0);
} else {
timestampAdjuster = new TimestampAdjuster(timestampAdjusters.get(0).firstSampleTimestampUs);
timestampAdjusters.add(timestampAdjuster);
}
// section_syntax_indicator(1), '0'(1), reserved(2), section_length(12)
sectionData.skipBytes(2);
int programNumber = sectionData.readUnsignedShort();
// reserved (2), version_number (5), current_next_indicator (1), section_number (8),
// last_section_number (8), reserved (3), PCR_PID (13)
sectionData.skipBytes(9);
sectionData.skipBytes(5);
// Read program_info_length.
sectionData.readBytes(pmtScratch, 2);
@ -364,7 +384,7 @@ public final class TsExtractor implements Extractor {
EsInfo dummyEsInfo = new EsInfo(TS_STREAM_TYPE_ID3, null, new byte[0]);
id3Reader = payloadReaderFactory.createPayloadReader(TS_STREAM_TYPE_ID3, dummyEsInfo);
id3Reader.init(timestampAdjuster, output,
new TrackIdGenerator(TS_STREAM_TYPE_ID3, MAX_PID_PLUS_ONE));
new TrackIdGenerator(programNumber, TS_STREAM_TYPE_ID3, MAX_PID_PLUS_ONE));
}
int remainingEntriesLength = sectionData.bytesLeft();
@ -393,7 +413,8 @@ public final class TsExtractor implements Extractor {
} else {
reader = payloadReaderFactory.createPayloadReader(streamType, esInfo);
if (reader != null) {
reader.init(timestampAdjuster, output, new TrackIdGenerator(trackId, MAX_PID_PLUS_ONE));
reader.init(timestampAdjuster, output,
new TrackIdGenerator(programNumber, trackId, MAX_PID_PLUS_ONE));
}
}
@ -404,13 +425,17 @@ public final class TsExtractor implements Extractor {
if (hlsMode) {
if (!tracksEnded) {
output.endTracks();
remainingPmts = 0;
tracksEnded = true;
}
} else {
tsPayloadReaders.remove(TS_PAT_PID);
tsPayloadReaders.remove(pid);
output.endTracks();
remainingPmts--;
if (remainingPmts == 0) {
output.endTracks();
tracksEnded = true;
}
}
tracksEnded = true;
}
/**

62
library/src/main/java/com/google/android/exoplayer2/extractor/ts/TsPayloadReader.java
View File

@ -81,17 +81,63 @@ public interface TsPayloadReader {
*/
final class TrackIdGenerator {
private final int firstId;
private final int idIncrement;
private int generatedIdCount;
private static final int ID_UNSET = Integer.MIN_VALUE;
public TrackIdGenerator(int firstId, int idIncrement) {
this.firstId = firstId;
this.idIncrement = idIncrement;
private final String formatIdPrefix;
private final int firstTrackId;
private final int trackIdIncrement;
private int trackId;
private String formatId;
public TrackIdGenerator(int firstTrackId, int trackIdIncrement) {
this(ID_UNSET, firstTrackId, trackIdIncrement);
}
public int getNextId() {
return firstId + idIncrement * generatedIdCount++;
public TrackIdGenerator(int programNumber, int firstTrackId, int trackIdIncrement) {
this.formatIdPrefix = programNumber != ID_UNSET ? programNumber + "/" : "";
this.firstTrackId = firstTrackId;
this.trackIdIncrement = trackIdIncrement;
trackId = ID_UNSET;
}
/**
* Generates a new set of track and track format ids. Must be called before {@code get*}
* methods.
*/
public void generateNewId() {
trackId = trackId == ID_UNSET ? firstTrackId : trackId + trackIdIncrement;
formatId = formatIdPrefix + trackId;
}
/**
* Returns the last generated track id. Must be called after the first {@link #generateNewId()}
* call.
*
* @return The last generated track id.
*/
public int getTrackId() {
maybeThrowUninitializedError();
return trackId;
}
/**
* Returns the last generated format id, with the format {@code "programNumber/trackId"}. If no
* {@code programNumber} was provided, the {@code trackId} alone is used as format id. Must be
* called after the first {@link #generateNewId()} call.
*
* @return The last generated format id, with the format {@code "programNumber/trackId"}. If no
* {@code programNumber} was provided, the {@code trackId} alone is used as
* format id.
*/
public String getFormatId() {
maybeThrowUninitializedError();
return formatId;
}
private void maybeThrowUninitializedError() {
if (trackId == ID_UNSET) {
throw new IllegalStateException("generateNewId() must be called before retrieving ids.");
}
}
}

2
library/src/main/java/com/google/android/exoplayer2/util/TimestampAdjuster.java
View File

@ -34,7 +34,7 @@ public final class TimestampAdjuster {
*/
private static final long MAX_PTS_PLUS_ONE = 0x200000000L;
private final long firstSampleTimestampUs;
public final long firstSampleTimestampUs;
private long timestampOffsetUs;