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Minor formatting changes

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This commit is contained in:
Rohit Singh 2024-01-18 15:48:05 +00:00
parent b6990c3c5b
commit 6ac888ec3b
2 changed files with 46 additions and 54 deletions
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9
libraries/extractor/src/main/java/androidx/media3/extractor/MpeghUtil.java
View file

@ -1,5 +1,5 @@
/*
* Copyright 2023 The Android Open Source Project
* Copyright 2024 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.
@ -72,10 +72,10 @@ public final class MpeghUtil {
switch (packetType) {
case MhasPacketHeader.PACTYP_MPEGH3DACFG:
throw ParserException.createForMalformedContainer(
"Mpegh3daConfig packet with invalid packet label 0", /* cause= */ null);
"Mpegh3daConfig packet with invalid packet label 0", /* cause= */ null);
case MhasPacketHeader.PACTYP_AUDIOTRUNCATION:
throw ParserException.createForMalformedContainer(
"AudioTruncation packet with invalid packet label 0", /* cause= */ null);
"AudioTruncation packet with invalid packet label 0", /* cause= */ null);
case MhasPacketHeader.PACTYP_MPEGH3DAFRAME:
throw ParserException.createForMalformedContainer(
"Mpegh3daFrame packet with invalid packet label 0", /* cause= */ null);
@ -612,7 +612,8 @@ public final class MpeghUtil {
public final int packetLength;
public final int headerLength;
public MhasPacketHeader(@Type int packetType, long packetLabel, int packetLength, int headerLength) {
public MhasPacketHeader(
@Type int packetType, long packetLabel, int packetLength, int headerLength) {
this.packetType = packetType;
this.packetLabel = packetLabel;
this.packetLength = packetLength;

91
libraries/extractor/src/main/java/androidx/media3/extractor/ts/MpeghReader.java
View file

@ -1,5 +1,5 @@
/*
* Copyright 2023 The Android Open Source Project
* Copyright 2024 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.
@ -61,7 +61,6 @@ public final class MpeghReader implements ElementaryStreamReader {
private @MonotonicNonNull String formatId;
private @MonotonicNonNull TrackOutput output;
// The timestamp to attach to the next sample in the current packet.
private double timeUs;
private double timeUsPending;
@ -79,33 +78,21 @@ public final class MpeghReader implements ElementaryStreamReader {
private int payloadBytesRead;
private int frameBytes;
@Nullable
private MpeghUtil.MhasPacketHeader header;
@Nullable private MpeghUtil.MhasPacketHeader header;
private int samplingRate;
private int standardFrameLength;
private int truncationSamples;
private long mainStreamLabel;
private boolean configFound;
/**
* Constructs a new reader for MPEG-H elementary streams.
*/
/** Constructs a new reader for MPEG-H elementary streams. */
public MpeghReader() {
state = STATE_FINDING_SYNC;
syncBytes = 0;
headerScratchBytes = new ParsableByteArray(new byte[MpeghUtil.MAX_MHAS_PACKET_HEADER_SIZE]);
dataScratchBytes = new ParsableByteArray();
header = null;
headerDataFinished = false;
payloadBytesRead = 0;
frameBytes = 0;
samplingRate = C.RATE_UNSET_INT;
standardFrameLength = C.LENGTH_UNSET;
truncationSamples = 0;
mainStreamLabel = C.INDEX_UNSET;
configFound = false;
dataPending = false;
rapPending = true;
timeUs = C.TIME_UNSET;
timeUsPending = C.TIME_UNSET;
@ -172,10 +159,15 @@ public final class MpeghReader implements ElementaryStreamReader {
}
break;
case STATE_READING_PACKET_HEADER:
// check if the gathering of data in header scratch buffer was finished and adjust remaining bytes
// check if the gathering of data in header scratch buffer was finished and adjust
// remaining bytes
if (headerDataFinished && headerScratchBytes.getPosition() > 0) {
System.arraycopy(headerScratchBytes.getData(), headerScratchBytes.getPosition(),
headerScratchBytes.getData(), 0, headerScratchBytes.bytesLeft());
System.arraycopy(
headerScratchBytes.getData(),
headerScratchBytes.getPosition(),
headerScratchBytes.getData(),
0,
headerScratchBytes.bytesLeft());
headerScratchBytes.setPosition(headerScratchBytes.bytesLeft());
headerDataFinished = false;
}
@ -195,8 +187,8 @@ public final class MpeghReader implements ElementaryStreamReader {
payloadBytesRead = 0;
frameBytes += header.packetLength + header.headerLength;
if (header.packetType == MpeghUtil.MhasPacketHeader.PACTYP_AUDIOTRUNCATION ||
header.packetType == MpeghUtil.MhasPacketHeader.PACTYP_MPEGH3DACFG) {
if (header.packetType == MpeghUtil.MhasPacketHeader.PACTYP_AUDIOTRUNCATION
|| header.packetType == MpeghUtil.MhasPacketHeader.PACTYP_MPEGH3DACFG) {
dataScratchBytes.ensureCapacity(header.packetLength);
dataScratchBytes.setPosition(0);
dataScratchBytes.setLimit(header.packetLength);
@ -207,11 +199,8 @@ public final class MpeghReader implements ElementaryStreamReader {
}
break;
case STATE_READING_PACKET_PAYLOAD:
if (header == null) {
throw new IllegalStateException();
}
if (header.packetType == MpeghUtil.MhasPacketHeader.PACTYP_MPEGH3DACFG ||
header.packetType == MpeghUtil.MhasPacketHeader.PACTYP_AUDIOTRUNCATION) {
if (header.packetType == MpeghUtil.MhasPacketHeader.PACTYP_MPEGH3DACFG
|| header.packetType == MpeghUtil.MhasPacketHeader.PACTYP_AUDIOTRUNCATION) {
// read bytes from header scratch buffer into the data scratch buffer
headerDataPos = headerScratchBytes.getPosition();
if (headerDataPos != MpeghUtil.MAX_MHAS_PACKET_HEADER_SIZE) {
@ -228,8 +217,8 @@ public final class MpeghReader implements ElementaryStreamReader {
// read bytes from header scratch buffer and write them into the output
headerDataPos = headerScratchBytes.getPosition();
if (headerDataPos != MpeghUtil.MAX_MHAS_PACKET_HEADER_SIZE) {
bytesToRead = min(headerScratchBytes.bytesLeft(),
header.packetLength - payloadBytesRead);
bytesToRead =
min(headerScratchBytes.bytesLeft(), header.packetLength - payloadBytesRead);
output.sampleData(headerScratchBytes, bytesToRead);
payloadBytesRead += bytesToRead;
}
@ -255,9 +244,10 @@ public final class MpeghReader implements ElementaryStreamReader {
@Nullable List<byte[]> initializationData = null;
if (config.compatibleProfileLevelSet != null
&& config.compatibleProfileLevelSet.length > 0) {
// The first entry in initializationData is reserved for the audio specific config.
initializationData = ImmutableList.of(Util.EMPTY_BYTE_ARRAY,
config.compatibleProfileLevelSet);
// The first entry in initializationData is reserved for the audio specific
// config.
initializationData =
ImmutableList.of(Util.EMPTY_BYTE_ARRAY, config.compatibleProfileLevelSet);
}
Format format =
new Format.Builder()
@ -280,7 +270,8 @@ public final class MpeghReader implements ElementaryStreamReader {
rapPending = false;
}
double sampleDurationUs =
(double) C.MICROS_PER_SECOND * (standardFrameLength - truncationSamples)
(double) C.MICROS_PER_SECOND
* (standardFrameLength - truncationSamples)
/ samplingRate;
long pts = Math.round(timeUs);
if (dataPending) {
@ -310,17 +301,16 @@ public final class MpeghReader implements ElementaryStreamReader {
// Do nothing.
}
/**
* Continues a read from the provided {@code source} into a given {@code target}.
*
* @param source The source from which to read.
* @param target The target into which data is to be read.
* @param source The source from which to read.
* @param target The target into which data is to be read.
* @param targetLength The target length of the read.
* @return Whether the target length was reached.
*/
private boolean continueRead(ParsableByteArray source, ParsableByteArray target,
int targetLength) {
private boolean continueRead(
ParsableByteArray source, ParsableByteArray target, int targetLength) {
int bytesToRead = min(source.bytesLeft(), targetLength - target.getPosition());
source.readBytes(target.getData(), target.getPosition(), bytesToRead);
target.setPosition(target.getPosition() + bytesToRead);
@ -340,21 +330,22 @@ public final class MpeghReader implements ElementaryStreamReader {
if ((flags & FLAG_RANDOM_ACCESS_INDICATOR) == 0) {
// RAI is not signalled -> drop the PES data
pesBuffer.setPosition(pesBuffer.limit());
} else {
if ((flags & FLAG_DATA_ALIGNMENT_INDICATOR) == 0) {
// if RAI is signalled but the data is not aligned we need to find the sync packet
while (pesBuffer.bytesLeft() > 0) {
syncBytes <<= C.BITS_PER_BYTE;
syncBytes |= pesBuffer.readUnsignedByte();
if (MpeghUtil.isSyncWord(syncBytes)) {
pesBuffer.setPosition(pesBuffer.getPosition() - MpeghUtil.MHAS_SYNC_WORD_LENGTH);
syncBytes = 0;
return true;
}
return false;
}
if ((flags & FLAG_DATA_ALIGNMENT_INDICATOR) == 0) {
// if RAI is signalled but the data is not aligned we need to find the sync packet
while (pesBuffer.bytesLeft() > 0) {
syncBytes <<= C.BITS_PER_BYTE;
syncBytes |= pesBuffer.readUnsignedByte();
if (MpeghUtil.isSyncWord(syncBytes)) {
pesBuffer.setPosition(pesBuffer.getPosition() - MpeghUtil.MHAS_SYNC_WORD_LENGTH);
syncBytes = 0;
return true;
}
} else {
return true;
}
} else {
return true;
}
} else {
pesBuffer.setPosition(pesBuffer.limit());