250 lines
9.7 KiB
C#
250 lines
9.7 KiB
C#
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//============================================================================
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// BDInfo - Blu-ray Video and Audio Analysis Tool
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// Copyright © 2010 Cinema Squid
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2.1 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//=============================================================================
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using System;
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using System.Collections.Generic;
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using System.Text;
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namespace BDInfo
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{
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public abstract class TSCodecDTSHD
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{
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private static int[] SampleRates = new int[]
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{ 0x1F40, 0x3E80, 0x7D00, 0x0FA00, 0x1F400, 0x5622, 0x0AC44, 0x15888, 0x2B110, 0x56220, 0x2EE0, 0x5DC0, 0x0BB80, 0x17700, 0x2EE00, 0x5DC00 };
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public static void Scan(
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TSAudioStream stream,
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TSStreamBuffer buffer,
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long bitrate,
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ref string tag)
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{
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if (stream.IsInitialized &&
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(stream.StreamType == TSStreamType.DTS_HD_SECONDARY_AUDIO ||
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(stream.CoreStream != null &&
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stream.CoreStream.IsInitialized))) return;
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bool syncFound = false;
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uint sync = 0;
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for (int i = 0; i < buffer.Length; i++)
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{
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sync = (sync << 8) + buffer.ReadByte();
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if (sync == 0x64582025)
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{
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syncFound = true;
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break;
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}
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}
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if (!syncFound)
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{
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tag = "CORE";
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if (stream.CoreStream == null)
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{
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stream.CoreStream = new TSAudioStream();
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stream.CoreStream.StreamType = TSStreamType.DTS_AUDIO;
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}
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if (!stream.CoreStream.IsInitialized)
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{
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buffer.BeginRead();
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TSCodecDTS.Scan(stream.CoreStream, buffer, bitrate, ref tag);
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}
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return;
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}
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tag = "HD";
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int temp1 = buffer.ReadBits(8);
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int nuSubStreamIndex = buffer.ReadBits(2);
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int nuExtSSHeaderSize = 0;
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int nuExtSSFSize = 0;
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int bBlownUpHeader = buffer.ReadBits(1);
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if (1 == bBlownUpHeader)
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{
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nuExtSSHeaderSize = buffer.ReadBits(12) + 1;
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nuExtSSFSize = buffer.ReadBits(20) + 1;
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}
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else
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{
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nuExtSSHeaderSize = buffer.ReadBits(8) + 1;
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nuExtSSFSize = buffer.ReadBits(16) + 1;
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}
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int nuNumAudioPresent = 1;
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int nuNumAssets = 1;
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int bStaticFieldsPresent = buffer.ReadBits(1);
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if (1 == bStaticFieldsPresent)
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{
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int nuRefClockCode = buffer.ReadBits(2);
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int nuExSSFrameDurationCode = buffer.ReadBits(3) + 1;
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long nuTimeStamp = 0;
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if (1 == buffer.ReadBits(1))
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{
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nuTimeStamp = (buffer.ReadBits(18) << 18) + buffer.ReadBits(18);
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}
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nuNumAudioPresent = buffer.ReadBits(3) + 1;
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nuNumAssets = buffer.ReadBits(3) + 1;
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int[] nuActiveExSSMask = new int[nuNumAudioPresent];
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for (int i = 0; i < nuNumAudioPresent; i++)
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{
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nuActiveExSSMask[i] = buffer.ReadBits(nuSubStreamIndex + 1); //?
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}
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for (int i = 0; i < nuNumAudioPresent; i++)
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{
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for (int j = 0; j < nuSubStreamIndex + 1; j++)
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{
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if (((j + 1) % 2) == 1)
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{
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int mask = buffer.ReadBits(8);
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}
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}
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}
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if (1 == buffer.ReadBits(1))
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{
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int nuMixMetadataAdjLevel = buffer.ReadBits(2);
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int nuBits4MixOutMask = buffer.ReadBits(2) * 4 + 4;
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int nuNumMixOutConfigs = buffer.ReadBits(2) + 1;
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int[] nuMixOutChMask = new int[nuNumMixOutConfigs];
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for (int i = 0; i < nuNumMixOutConfigs; i++)
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{
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nuMixOutChMask[i] = buffer.ReadBits(nuBits4MixOutMask);
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}
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}
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}
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int[] AssetSizes = new int[nuNumAssets];
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for (int i = 0; i < nuNumAssets; i++)
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{
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if (1 == bBlownUpHeader)
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{
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AssetSizes[i] = buffer.ReadBits(20) + 1;
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}
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else
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{
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AssetSizes[i] = buffer.ReadBits(16) + 1;
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}
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}
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for (int i = 0; i < nuNumAssets; i++)
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{
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long bufferPosition = buffer.Position;
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int nuAssetDescriptorFSIZE = buffer.ReadBits(9) + 1;
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int DescriptorDataForAssetIndex = buffer.ReadBits(3);
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if (1 == bStaticFieldsPresent)
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{
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int AssetTypeDescrPresent = buffer.ReadBits(1);
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if (1 == AssetTypeDescrPresent)
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{
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int AssetTypeDescriptor = buffer.ReadBits(4);
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}
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int LanguageDescrPresent = buffer.ReadBits(1);
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if (1 == LanguageDescrPresent)
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{
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int LanguageDescriptor = buffer.ReadBits(24);
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}
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int bInfoTextPresent = buffer.ReadBits(1);
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if (1 == bInfoTextPresent)
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{
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int nuInfoTextByteSize = buffer.ReadBits(10) + 1;
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int[] InfoText = new int[nuInfoTextByteSize];
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for (int j = 0; j < nuInfoTextByteSize; j++)
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{
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InfoText[j] = buffer.ReadBits(8);
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}
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}
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int nuBitResolution = buffer.ReadBits(5) + 1;
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int nuMaxSampleRate = buffer.ReadBits(4);
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int nuTotalNumChs = buffer.ReadBits(8) + 1;
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int bOne2OneMapChannels2Speakers = buffer.ReadBits(1);
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int nuSpkrActivityMask = 0;
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if (1 == bOne2OneMapChannels2Speakers)
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{
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int bEmbeddedStereoFlag = 0;
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if (nuTotalNumChs > 2)
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{
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bEmbeddedStereoFlag = buffer.ReadBits(1);
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}
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int bEmbeddedSixChFlag = 0;
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if (nuTotalNumChs > 6)
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{
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bEmbeddedSixChFlag = buffer.ReadBits(1);
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}
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int bSpkrMaskEnabled = buffer.ReadBits(1);
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int nuNumBits4SAMask = 0;
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if (1 == bSpkrMaskEnabled)
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{
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nuNumBits4SAMask = buffer.ReadBits(2);
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nuNumBits4SAMask = nuNumBits4SAMask * 4 + 4;
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nuSpkrActivityMask = buffer.ReadBits(nuNumBits4SAMask);
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}
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// TODO...
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}
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stream.SampleRate = SampleRates[nuMaxSampleRate];
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stream.BitDepth = nuBitResolution;
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stream.LFE = 0;
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if ((nuSpkrActivityMask & 0x8) == 0x8)
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{
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++stream.LFE;
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}
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if ((nuSpkrActivityMask & 0x1000) == 0x1000)
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{
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++stream.LFE;
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}
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stream.ChannelCount = nuTotalNumChs - stream.LFE;
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}
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if (nuNumAssets > 1)
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{
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// TODO...
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break;
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}
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}
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// TODO
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if (stream.CoreStream != null)
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{
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TSAudioStream coreStream = (TSAudioStream)stream.CoreStream;
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if (coreStream.AudioMode == TSAudioMode.Extended &&
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stream.ChannelCount == 5)
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{
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stream.AudioMode = TSAudioMode.Extended;
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}
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/*
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if (coreStream.DialNorm != 0)
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{
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stream.DialNorm = coreStream.DialNorm;
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}
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*/
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}
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if (stream.StreamType == TSStreamType.DTS_HD_MASTER_AUDIO)
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{
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stream.IsVBR = true;
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stream.IsInitialized = true;
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}
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else if (bitrate > 0)
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{
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stream.IsVBR = false;
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stream.BitRate = bitrate;
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if (stream.CoreStream != null)
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{
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stream.BitRate += stream.CoreStream.BitRate;
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stream.IsInitialized = true;
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}
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stream.IsInitialized = (stream.BitRate > 0 ? true : false);
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}
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}
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}
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}
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