public void Scan(TSAudioStream stream, TSStreamBuffer buffer, ref string tag, long?bitrate)
{
if (stream.IsInitialized &&
(stream.StreamType == TSStreamType.DTS_HD_SECONDARY_AUDIO || stream.CoreStream != null && stream.CoreStream.IsInitialized))
{
return;
}
var syncFound = false;
uint sync = 0;
for (var i = 0; i < buffer.Length; i++)
{
sync = (sync << 8) + buffer.ReadByte();
if (sync == 0x64582025)
{
syncFound = true;
break;
}
}
if (!syncFound)
{
tag = "CORE";
if (stream.CoreStream == null)
{
stream.CoreStream = new TSAudioStream {
StreamType = TSStreamType.DTS_AUDIO
}
}
;
if (!stream.CoreStream.IsInitialized)
{
buffer.BeginRead();
(new TSCodecDTS()).Scan(stream.CoreStream, buffer, ref tag, bitrate);
}
return;
}
tag = "HD";
buffer.BSSkipBits(8);
var nuSubStreamIndex = buffer.ReadBits4(2);
var bBlownUpHeader = buffer.ReadBool();
buffer.BSSkipBits(bBlownUpHeader ? 32 : 24);
var nuNumAssets = 1;
var bStaticFieldsPresent = buffer.ReadBool();
if (bStaticFieldsPresent)
{
buffer.BSSkipBits(5);
if (buffer.ReadBool())
{
buffer.BSSkipBits(36);
}
var nuNumAudioPresent = buffer.ReadBits2(3) + 1;
nuNumAssets = buffer.ReadBits2(3) + 1;
var nuActiveExSsMask = new uint[nuNumAudioPresent];
for (var i = 0; i < nuNumAudioPresent; i++)
{
nuActiveExSsMask[i] = buffer.ReadBits4((int)(nuSubStreamIndex + 1)); //?
}
for (var i = 0; i < nuNumAudioPresent; i++)
{
for (var j = 0; j < nuSubStreamIndex + 1; j++)
{
if ((j + 1) % 2 == 1)
{
buffer.BSSkipBits(8);
}
}
}
if (buffer.ReadBool())
{
buffer.BSSkipBits(2);
var nuBits4MixOutMask = buffer.ReadBits2(2) * 4 + 4;
var nuNumMixOutConfigs = buffer.ReadBits2(2) + 1;
var nuMixOutChMask = new uint[nuNumMixOutConfigs];
for (var i = 0; i < nuNumMixOutConfigs; i++)
{
nuMixOutChMask[i] = buffer.ReadBits4(nuBits4MixOutMask);
}
}
}
var assetSizes = new uint[nuNumAssets];
for (var i = 0; i < nuNumAssets; i++)
{
if (bBlownUpHeader)
{
assetSizes[i] = buffer.ReadBits4(20) + 1;
}
else
{
assetSizes[i] = buffer.ReadBits4(16) + 1;
}
}
for (var i = 0; i < nuNumAssets; i++)
{
buffer.BSSkipBits(12);
if (bStaticFieldsPresent)
{
if (buffer.ReadBool())
{
buffer.BSSkipBits(4);
}
if (buffer.ReadBool())
{
buffer.BSSkipBits(24);
}
if (buffer.ReadBool())
{
var nuInfoTextByteSize = buffer.ReadBits2(10) + 1;
var infoText = new ushort[nuInfoTextByteSize];
for (var j = 0; j < nuInfoTextByteSize; j++)
{
infoText[j] = buffer.ReadBits2(8);
}
}
var nuBitResolution = buffer.ReadBits2(5) + 1;
int nuMaxSampleRate = buffer.ReadBits2(4);
var nuTotalNumChs = buffer.ReadBits2(8) + 1;
uint nuSpkrActivityMask = 0;
if (buffer.ReadBool())
{
if (nuTotalNumChs > 2)
{
buffer.BSSkipBits(1);
}
if (nuTotalNumChs > 6)
{
buffer.BSSkipBits(1);
}
if (buffer.ReadBool())
{
int nuNumBits4SAMask = buffer.ReadBits2(2);
nuNumBits4SAMask = nuNumBits4SAMask * 4 + 4;
nuSpkrActivityMask = buffer.ReadBits4(nuNumBits4SAMask);
}
// TODO...
}
stream.SampleRate = SampleRates[nuMaxSampleRate];
stream.BitDepth = nuBitResolution;
stream.LFE = 0;
if ((nuSpkrActivityMask & 0x8) == 0x8)
{
++stream.LFE;
}
if ((nuSpkrActivityMask & 0x1000) == 0x1000)
{
++stream.LFE;
}
stream.ChannelCount = nuTotalNumChs - stream.LFE;
}
if (nuNumAssets > 1)
{
// TODO...
break;
}
}
uint temp2 = 0;
while (buffer.Position < buffer.Length)
{
temp2 = (temp2 << 8) + buffer.ReadByte();
switch (temp2)
{
case 0x41A29547: // XLL Extended data
case 0x655E315E: // XBR Extended data
case 0x0A801921: // XSA Extended data
case 0x1D95F262: // X96k
case 0x47004A03: // XXch
case 0x5A5A5A5A: // Xch
var temp3 = 0;
for (var i = (int)buffer.Position; i < buffer.Length; i++)
{
temp3 = (temp3 << 8) + buffer.ReadByte();
if (temp3 == 0x02000850) //DTS:X Pattern
{
stream.HasExtensions = true;
break;
}
}
break;
}
if (stream.HasExtensions)
{
break;
}
}
// TODO
if (stream.CoreStream != null)
{
var coreStream = stream.CoreStream;
if (coreStream.AudioMode == TSAudioMode.Extended && stream.ChannelCount == 5)
{
stream.AudioMode = TSAudioMode.Extended;
}
/*
* if (coreStream.DialNorm != 0)
* {
* stream.DialNorm = coreStream.DialNorm;
* }
*/
}
if (stream.StreamType == TSStreamType.DTS_HD_MASTER_AUDIO)
{
stream.IsVBR = true;
stream.IsInitialized = true;
}
else if (bitrate.HasValue && bitrate > 0)
{
stream.IsVBR = false;
stream.BitRate = bitrate.Value;
if (stream.CoreStream != null)
{
stream.BitRate += stream.CoreStream.BitRate;
stream.IsInitialized = true;
}
stream.IsInitialized = stream.BitRate > 0;
}
}
}
public void Scan(TSAudioStream stream, TSStreamBuffer buffer, ref string tag, long?bitrate)
{
if (stream.IsInitialized)
{
return;
}
var syncFound = false;
uint sync = 0;
for (var i = 0; i < buffer.Length; i++)
{
sync = (sync << 8) + buffer.ReadByte();
if (sync == 0x7FFE8001)
{
syncFound = true;
break;
}
}
if (!syncFound)
{
return;
}
buffer.BSSkipBits(6);
var crcPresent = buffer.ReadBits4(1);
buffer.BSSkipBits(7);
var frameSize = buffer.ReadBits4(14);
if (frameSize < 95)
{
return;
}
buffer.BSSkipBits(6);
var sampleRate = buffer.ReadBits4(4);
if (sampleRate >= DcaSampleRates.Length)
{
return;
}
var bitRate = buffer.ReadBits4(5);
if (bitRate >= DcaBitRates.Length)
{
return;
}
buffer.BSSkipBits(8);
var extCoding = buffer.ReadBits4(1);
buffer.BSSkipBits(1);
var lfe = buffer.ReadBits4(2);
buffer.BSSkipBits(1);
if (crcPresent == 1)
{
buffer.BSSkipBits(16);
}
buffer.BSSkipBits(7);
var sourcePcmRes = buffer.ReadBits4(3);
buffer.BSSkipBits(2);
var dialogNorm = buffer.ReadBits4(4);
if (sourcePcmRes >= DcaBitsPerSample.Length)
{
return;
}
buffer.BSSkipBits(4);
var totalChannels = buffer.ReadBits4(3) + 1 + extCoding;
stream.SampleRate = DcaSampleRates[sampleRate];
stream.ChannelCount = (int)totalChannels;
stream.LFE = lfe > 0 ? 1 : 0;
stream.BitDepth = DcaBitsPerSample[sourcePcmRes];
stream.DialNorm = (int)-dialogNorm;
if ((sourcePcmRes & 0x1) == 0x1)
{
stream.AudioMode = TSAudioMode.Extended;
}
stream.BitRate = (uint)DcaBitRates[bitRate];
switch (stream.BitRate)
{
case 1:
if (bitrate != null && bitrate > 0)
{
stream.BitRate = bitrate.Value;
stream.IsVBR = false;
stream.IsInitialized = true;
}
else
{
stream.BitRate = 0;
}
break;
case 2:
case 3:
stream.IsVBR = true;
stream.IsInitialized = true;
break;
default:
stream.IsVBR = false;
stream.IsInitialized = true;
break;
}
}