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Dts mpeg2ts update #275

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Dts mpeg2ts update #275

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ed9806a
Add DTS-LBR and DTS:X support in MPEG2-TS extractor
rahulmohan-xperi Mar 22, 2023
4d25f01
Add tests for the LBR and DTS:X stream support added in MPEG2-TS extr…
rahulmohan-xperi Mar 27, 2023
bc35938
Update DTS test vectors
rahulmohan-xperi Apr 4, 2023
412414e
Fix the potential NullPointerException in DtsUhdReader
rahulmohan-xperi Apr 10, 2023
cc2904f
Fix build issue in DtsUhdReader caused by the updates in ElementarySt…
rahulmohan-xperi Jul 3, 2023
4c173c7
Various changes in response to internal review
rohitjoins Sep 6, 2023
ef41526
Implemented a single DTS reader class to handle all DTS streams. Revi…
rahulmohan-xperi Sep 25, 2023
34d90e7
CRC check is added for DTS UHD FTOC sync frames
rahulmohan-xperi Oct 5, 2023
e99a618
Added the logic to update the audio chunk ID in FTOC non-sync frames …
rahulmohan-xperi Oct 6, 2023
39cd88d
Keep the DTS UHD parser state information in the DtsReader insted of …
rahulmohan-xperi Oct 9, 2023
42d6f0a
Changes based on internal review
rohitjoins Nov 15, 2023
b8f0350
Reduce the number of bytes read from bitstream buffer to extract the …
rahulmohan-xperi Dec 6, 2023
01ca64c
Establish the synchronization only in the FTOC sync frames.
rahulmohan-xperi Dec 7, 2023
7ba1684
Updated DTS UHD test vector to contain multiple sync frames.
rahulmohan-xperi Dec 22, 2023
289a0c6
Set uhdAudioChunkId to 0 in seek() function. Read only the required n…
rahulmohan-xperi Jan 8, 2024
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Reduce the number of bytes read from bitstream buffer to extract the … 
…UHD header size. Update comments in the time stamp extraction code.
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rahulmohan-xperi committed Dec 6, 2023
commit b8f0350ddbb50c6d74b758c99d40d9d674c61009
3 changes: 2 additions & 1 deletion libraries/extractor/src/main/java/androidx/media3/extractor/DtsUtil.java
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Expand Up @@ -569,7 +569,8 @@ public static DtsAudioFormat parseDtsUhdFormat(byte[] frame, AtomicInteger uhdAu
/* cause= */ null);
}
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// Skip time stamp information if present, see section 5.2.3.2.
if (frameBits.readBit()) { // m_TimeStamp.m_bUpdateFlag
if (frameBits.readBit()) { // m_bParamPresent
// m_bUpdateFlag == true as m_bSyncFramePredefValueExists is false.
frameBits.skipBits(32 + 4); // m_TimeStamp
}
int sampleRateMultiplier = (1 << frameBits.readBits(2));
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11 changes: 7 additions & 4 deletions libraries/extractor/src/main/java/androidx/media3/extractor/ts/DtsReader.java
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Expand Up @@ -171,11 +171,14 @@ public void consume(ParsableByteArray data) throws ParserException {
break;
case STATE_FINDING_UHD_HEADER_SIZE:
// Read enough bytes to parse the header size information.
if (continueRead(data, headerScratchBytes.getData(), /* targetLength= */ 7)) {
if (continueRead(data, headerScratchBytes.getData(), /* targetLength= */ 6)) {
uhdHeaderSize = DtsUtil.parseDtsUhdHeaderSize(headerScratchBytes.getData());
// If data read(FTOC_MIN_HEADER_SIZE) is more than the actual header size, set target
// read length equal to bytesRead. Otherwise the continueRead() function will fail.
uhdHeaderSize = max(bytesRead, uhdHeaderSize);
// Adjust the array read position if data read is more than the actual header size.
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if (bytesRead > uhdHeaderSize) {
int extraBytes = bytesRead - uhdHeaderSize;
bytesRead -= extraBytes;
data.setPosition(data.getPosition() - extraBytes);
}
state = STATE_READING_UHD_HEADER;
}
break;
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