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Optimizing AccurateRip

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This commit is contained in:
chudov
2010-02-10 03:51:39 +00:00
parent f09d5bab6d
commit 7b6803d0f9
2 changed files with 141 additions and 170 deletions
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281
CUETools.AccurateRip/AccurateRip.cs
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@@ -1,11 +1,11 @@
using System; using System;
using System.Collections.Generic; using System.Collections.Generic;
using System.Text;
using System.Globalization; using System.Globalization;
using System.Net;
using System.IO; using System.IO;
using CUETools.Codecs; using System.Net;
using System.Text;
using CUETools.CDImage; using CUETools.CDImage;
using CUETools.Codecs;
namespace CUETools.AccurateRip namespace CUETools.AccurateRip
{ {
@@ -23,23 +23,6 @@ namespace CUETools.AccurateRip
Init(); Init();
} }
unsafe private void CalculateFrame450CRCs(int* samples, int count, int iTrack, int currentOffset)
{
int s1 = Math.Min(count, Math.Max(0, 450 * 588 - _arOffsetRange - currentOffset));
int s2 = Math.Min(count, Math.Max(0, 451 * 588 + _arOffsetRange - currentOffset));
if (s1 < s2)
fixed (uint* FrameCRCs = &_offsetedFrame450CRC[iTrack, 0])
for (int sj = s1; sj < s2; sj++)
{
int magicFrameOffset = (int)currentOffset + sj - 450 * 588 + 1;
int firstOffset = Math.Max(-_arOffsetRange, magicFrameOffset - 588);
int lastOffset = Math.Min(magicFrameOffset - 1, _arOffsetRange);
uint sampleValue = (uint)((samples[2 * sj] & 0xffff) + (samples[2 * sj + 1] << 16));
for (int oi = firstOffset; oi <= lastOffset; oi++)
FrameCRCs[_arOffsetRange - oi] += sampleValue * (uint)(magicFrameOffset - oi);
}
}
public uint Confidence(int iTrack) public uint Confidence(int iTrack)
{ {
if (ARStatus != null) if (ARStatus != null)
@@ -113,11 +96,6 @@ namespace CUETools.AccurateRip
return ARStatus == null ? AccDisks[0].tracks[iTrack].CRC : 0U; return ARStatus == null ? AccDisks[0].tracks[iTrack].CRC : 0U;
} }
public uint BackupCRC(int iTrack)
{
return _backupCRC[iTrack];
}
public uint CRC(int iTrack) public uint CRC(int iTrack)
{ {
return CRC(iTrack, 0); return CRC(iTrack, 0);
@@ -129,10 +107,10 @@ namespace CUETools.AccurateRip
{ {
return return
((iTrack == _toc.AudioTracks - 1) ((iTrack == _toc.AudioTracks - 1)
? _offsetedCRCAR[iTrack + 1, 20 * 588 - 5 * 588] ? _CRCAR[iTrack + 1, 20 * 588 - 5 * 588]
: _offsetedCRCAR[iTrack + 1, 20 * 588]) - : _CRCAR[iTrack + 1, 0]) -
((iTrack == 0) ((iTrack == 0)
? _offsetedCRCAR[iTrack + 1, 5 * 588 - 1] ? _CRCAR[iTrack + 1, 5 * 588 - 1]
: 0); : 0);
} }
if (oi < 0) if (oi < 0)
@@ -140,24 +118,24 @@ namespace CUETools.AccurateRip
uint crc = 0; uint crc = 0;
if (iTrack > 0) if (iTrack > 0)
{ {
uint crcA = _offsetedCRCAR[iTrack, 20 * 588] - _offsetedCRCAR[iTrack, 20 * 588 + oi]; uint crcA = _CRCAR[iTrack, 0] - _CRCAR[iTrack, 20 * 588 + oi];
uint sumA = _offsetedCRCSM[iTrack, 20 * 588] - _offsetedCRCSM[iTrack, 20 * 588 + oi]; uint sumA = _CRCSM[iTrack, 0] - _CRCSM[iTrack, 20 * 588 + oi];
uint posA = _toc[iTrack + _toc.FirstAudio - 1].Length * 588 + (uint)oi; uint posA = _toc[iTrack + _toc.FirstAudio - 1].Length * 588 + (uint)oi;
crc = crcA - sumA * posA; crc = crcA - sumA * posA;
} }
uint crcB uint crcB
= ((iTrack == _toc.AudioTracks - 1) = ((iTrack == _toc.AudioTracks - 1)
? _offsetedCRCAR[iTrack + 1, 20 * 588 - 5 * 588 + oi] ? _CRCAR[iTrack + 1, 20 * 588 - 5 * 588 + oi]
: _offsetedCRCAR[iTrack + 1, 20 * 588 + oi]) : _CRCAR[iTrack + 1, 20 * 588 + oi])
- ((iTrack == 0) - ((iTrack == 0)
? _offsetedCRCAR[iTrack + 1, 5 * 588 - 1 + oi] ? _CRCAR[iTrack + 1, 5 * 588 - 1 + oi]
: 0); : 0);
uint sumB uint sumB
= ((iTrack == _toc.AudioTracks - 1) = ((iTrack == _toc.AudioTracks - 1)
? _offsetedCRCSM[iTrack + 1, 20 * 588 - 5 * 588 + oi] ? _CRCSM[iTrack + 1, 20 * 588 - 5 * 588 + oi]
: _offsetedCRCSM[iTrack + 1, 20 * 588 + oi]) : _CRCSM[iTrack + 1, 20 * 588 + oi])
- ((iTrack == 0) - ((iTrack == 0)
? _offsetedCRCSM[iTrack + 1, 5 * 588 - 1 + oi] ? _CRCSM[iTrack + 1, 5 * 588 - 1 + oi]
: 0); : 0);
uint posB = (uint)-oi; uint posB = (uint)-oi;
return crc + crcB + sumB * posB; return crc + crcB + sumB * posB;
@@ -166,24 +144,24 @@ namespace CUETools.AccurateRip
{ {
uint crcA uint crcA
= ((iTrack == _toc.AudioTracks - 1) = ((iTrack == _toc.AudioTracks - 1)
? _offsetedCRCAR[iTrack + 1, 20 * 588 - 5 * 588 + oi] ? _CRCAR[iTrack + 1, 20 * 588 - 5 * 588 + oi]
: _offsetedCRCAR[iTrack + 1, 20 * 588]) : _CRCAR[iTrack + 1, 0])
- ((iTrack == 0) - ((iTrack == 0)
? _offsetedCRCAR[iTrack + 1, 5 * 588 + oi - 1] ? _CRCAR[iTrack + 1, 5 * 588 + oi - 1]
: _offsetedCRCAR[iTrack + 1, oi]); : _CRCAR[iTrack + 1, oi]);
uint sumA uint sumA
= ((iTrack == _toc.AudioTracks - 1) = ((iTrack == _toc.AudioTracks - 1)
? _offsetedCRCSM[iTrack + 1, 20 * 588 - 5 * 588 + oi] ? _CRCSM[iTrack + 1, 20 * 588 - 5 * 588 + oi]
: _offsetedCRCSM[iTrack + 1, 20 * 588]) : _CRCSM[iTrack + 1, 0])
- ((iTrack == 0) - ((iTrack == 0)
? _offsetedCRCSM[iTrack + 1, 5 * 588 + oi - 1] ? _CRCSM[iTrack + 1, 5 * 588 + oi - 1]
: _offsetedCRCSM[iTrack + 1, oi]); : _CRCSM[iTrack + 1, oi]);
uint posA = (uint)oi; uint posA = (uint)oi;
uint crc = crcA - sumA * posA; uint crc = crcA - sumA * posA;
if (iTrack < _toc.AudioTracks - 1) if (iTrack < _toc.AudioTracks - 1)
{ {
uint crcB = _offsetedCRCAR[iTrack + 2, oi]; uint crcB = _CRCAR[iTrack + 2, oi];
uint sumB = _offsetedCRCSM[iTrack + 2, oi]; uint sumB = _CRCSM[iTrack + 2, oi];
uint posB = _toc[iTrack + _toc.FirstAudio].Length * 588 + (uint)-oi; uint posB = _toc[iTrack + _toc.FirstAudio].Length * 588 + (uint)-oi;
crc += crcB + sumB * posB; crc += crcB + sumB * posB;
} }
@@ -198,7 +176,7 @@ namespace CUETools.AccurateRip
public uint CRC32(int iTrack, int oi) public uint CRC32(int iTrack, int oi)
{ {
if (_offsetedCRC32Res[iTrack, _arOffsetRange + oi] == 0) if (_CacheCRC32[iTrack, _arOffsetRange + oi] == 0)
{ {
uint crc = 0xffffffff; uint crc = 0xffffffff;
if (iTrack == 0) if (iTrack == 0)
@@ -213,17 +191,17 @@ namespace CUETools.AccurateRip
if (oi > 0 && (iTrack == 0 || (iTrack == 1 && _toc[_toc.FirstAudio].Pregap == 0))) if (oi > 0 && (iTrack == 0 || (iTrack == 1 && _toc[_toc.FirstAudio].Pregap == 0)))
{ {
// Calculate track CRC skipping first oi samples by 'subtracting' their CRC // Calculate track CRC skipping first oi samples by 'subtracting' their CRC
crc = _crc32.Combine(_offsetedCRC32[iTrack, oi], _offsetedCRC32[iTrack, 20 * 588], trackLength - oi * 4); crc = _crc32.Combine(_CRC32[iTrack, oi], _CRC32[iTrack, 0], trackLength - oi * 4);
// Use 0xffffffff as an initial state // Use 0xffffffff as an initial state
crc = _crc32.Combine(0xffffffff, crc, trackLength - oi * 4); crc = _crc32.Combine(0xffffffff, crc, trackLength - oi * 4);
} }
else if (oi < 0 && iTrack == _toc.AudioTracks) else if (oi < 0 && iTrack == _toc.AudioTracks)
{ {
crc = _crc32.Combine(crc, _offsetedCRC32[iTrack, 20 * 588 + oi], trackLength + oi * 4); crc = _crc32.Combine(crc, _CRC32[iTrack, 20 * 588 + oi], trackLength + oi * 4);
} }
else else
{ {
crc = _crc32.Combine(crc, _offsetedCRC32[iTrack, 20 * 588], trackLength); crc = _crc32.Combine(crc, _CRC32[iTrack, 0], trackLength);
} }
if (oi > 0 && iTrack == _toc.AudioTracks) if (oi > 0 && iTrack == _toc.AudioTracks)
crc = _crc32.Combine(crc, 0, oi * 4); crc = _crc32.Combine(crc, 0, oi * 4);
@@ -236,33 +214,33 @@ namespace CUETools.AccurateRip
if (oi > 0) if (oi > 0)
{ {
// Calculate track CRC skipping first oi samples by 'subtracting' their CRC // Calculate track CRC skipping first oi samples by 'subtracting' their CRC
crc = _crc32.Combine(_offsetedCRC32[iTrack, oi], _offsetedCRC32[iTrack, 20 * 588], trackLength - oi * 4); crc = _crc32.Combine(_CRC32[iTrack, oi], _CRC32[iTrack, 0], trackLength - oi * 4);
// Use 0xffffffff as an initial state // Use 0xffffffff as an initial state
crc = _crc32.Combine(0xffffffff, crc, trackLength - oi * 4); crc = _crc32.Combine(0xffffffff, crc, trackLength - oi * 4);
// Add oi samples from next track CRC // Add oi samples from next track CRC
if (iTrack < _toc.AudioTracks) if (iTrack < _toc.AudioTracks)
crc = _crc32.Combine(crc, _offsetedCRC32[iTrack + 1, oi], oi * 4); crc = _crc32.Combine(crc, _CRC32[iTrack + 1, oi], oi * 4);
else else
crc = _crc32.Combine(crc, 0, oi * 4); crc = _crc32.Combine(crc, 0, oi * 4);
} }
else if (oi < 0) else if (oi < 0)
{ {
// Calculate CRC of previous track's last oi samples by 'subtracting' it's last CRCs // Calculate CRC of previous track's last oi samples by 'subtracting' it's last CRCs
crc = _crc32.Combine(_offsetedCRC32[iTrack - 1, 20 * 588 + oi], _offsetedCRC32[iTrack - 1, 20 * 588], -oi * 4); crc = _crc32.Combine(_CRC32[iTrack - 1, 20 * 588 + oi], _CRC32[iTrack - 1, 0], -oi * 4);
// Use 0xffffffff as an initial state // Use 0xffffffff as an initial state
crc = _crc32.Combine(0xffffffff, crc, -oi * 4); crc = _crc32.Combine(0xffffffff, crc, -oi * 4);
// Add this track's CRC without last oi samples // Add this track's CRC without last oi samples
crc = _crc32.Combine(crc, _offsetedCRC32[iTrack, 20 * 588 + oi], trackLength + oi * 4); crc = _crc32.Combine(crc, _CRC32[iTrack, 20 * 588 + oi], trackLength + oi * 4);
} }
else // oi == 0 else // oi == 0
{ {
// Use 0xffffffff as an initial state // Use 0xffffffff as an initial state
crc = _crc32.Combine(0xffffffff, _offsetedCRC32[iTrack, 20 * 588], trackLength); crc = _crc32.Combine(0xffffffff, _CRC32[iTrack, 0], trackLength);
} }
} }
_offsetedCRC32Res[iTrack, _arOffsetRange + oi] = crc ^ 0xffffffff; _CacheCRC32[iTrack, _arOffsetRange + oi] = crc ^ 0xffffffff;
} }
return _offsetedCRC32Res[iTrack, _arOffsetRange + oi]; return _CacheCRC32[iTrack, _arOffsetRange + oi];
} }
public uint CRCWONULL(int iTrack) public uint CRCWONULL(int iTrack)
@@ -272,7 +250,7 @@ namespace CUETools.AccurateRip
public uint CRCWONULL(int iTrack, int oi) public uint CRCWONULL(int iTrack, int oi)
{ {
if (_offsetedCRCWNRes[iTrack, _arOffsetRange + oi] == 0) if (_CacheCRCWN[iTrack, _arOffsetRange + oi] == 0)
{ {
uint crc = 0xffffffff; uint crc = 0xffffffff;
if (iTrack == 0) if (iTrack == 0)
@@ -280,8 +258,8 @@ namespace CUETools.AccurateRip
for (iTrack = 0; iTrack <= _toc.AudioTracks; iTrack++) for (iTrack = 0; iTrack <= _toc.AudioTracks; iTrack++)
{ {
int trackLength = (int)(iTrack > 0 ? _toc[iTrack + _toc.FirstAudio - 1].Length : _toc[_toc.FirstAudio].Pregap) * 588 * 4 int trackLength = (int)(iTrack > 0 ? _toc[iTrack + _toc.FirstAudio - 1].Length : _toc[_toc.FirstAudio].Pregap) * 588 * 4
- _offsetedCRCNulls[iTrack, 20 * 588] * 2; - _CRCNL[iTrack, 0] * 2;
crc = _crc32.Combine(crc, _offsetedCRCWN[iTrack, 20 * 588], trackLength); crc = _crc32.Combine(crc, _CRCWN[iTrack, 0], trackLength);
} }
iTrack = 0; iTrack = 0;
} }
@@ -291,45 +269,45 @@ namespace CUETools.AccurateRip
if (oi > 0) if (oi > 0)
{ {
int nonzeroPrevLength = trackLength - oi * 4 - int nonzeroPrevLength = trackLength - oi * 4 -
(_offsetedCRCNulls[iTrack, 20 * 588] - _offsetedCRCNulls[iTrack, oi]) * 2; (_CRCNL[iTrack, 0] - _CRCNL[iTrack, oi]) * 2;
// Calculate track CRC skipping first oi samples by 'subtracting' their CRC // Calculate track CRC skipping first oi samples by 'subtracting' their CRC
crc = _crc32.Combine( crc = _crc32.Combine(
_offsetedCRCWN[iTrack, oi], _CRCWN[iTrack, oi],
_offsetedCRCWN[iTrack, 20 * 588], _CRCWN[iTrack, 0],
nonzeroPrevLength); nonzeroPrevLength);
// Use 0xffffffff as an initial state // Use 0xffffffff as an initial state
crc = _crc32.Combine(0xffffffff, crc, nonzeroPrevLength); crc = _crc32.Combine(0xffffffff, crc, nonzeroPrevLength);
// Add oi samples from next track CRC // Add oi samples from next track CRC
if (iTrack < _toc.AudioTracks) if (iTrack < _toc.AudioTracks)
crc = _crc32.Combine(crc, crc = _crc32.Combine(crc,
_offsetedCRCWN[iTrack + 1, oi], _CRCWN[iTrack + 1, oi],
oi * 4 - _offsetedCRCNulls[iTrack + 1, oi] * 2); oi * 4 - _CRCNL[iTrack + 1, oi] * 2);
} }
else if (oi < 0) else if (oi < 0)
{ {
int nonzeroPrevLength = -oi * 4 - int nonzeroPrevLength = -oi * 4 -
(_offsetedCRCNulls[iTrack - 1, 20 * 588] - _offsetedCRCNulls[iTrack - 1, 20 * 588 + oi]) * 2; (_CRCNL[iTrack - 1, 0] - _CRCNL[iTrack - 1, 20 * 588 + oi]) * 2;
// Calculate CRC of previous track's last oi samples by 'subtracting' it's last CRCs // Calculate CRC of previous track's last oi samples by 'subtracting' it's last CRCs
crc = _crc32.Combine( crc = _crc32.Combine(
_offsetedCRCWN[iTrack - 1, 20 * 588 + oi], _CRCWN[iTrack - 1, 20 * 588 + oi],
_offsetedCRCWN[iTrack - 1, 20 * 588], _CRCWN[iTrack - 1, 0],
nonzeroPrevLength); nonzeroPrevLength);
// Use 0xffffffff as an initial state // Use 0xffffffff as an initial state
crc = _crc32.Combine(0xffffffff, crc, nonzeroPrevLength); crc = _crc32.Combine(0xffffffff, crc, nonzeroPrevLength);
// Add this track's CRC without last oi samples // Add this track's CRC without last oi samples
crc = _crc32.Combine(crc, crc = _crc32.Combine(crc,
_offsetedCRCWN[iTrack, 20 * 588 + oi], _CRCWN[iTrack, 20 * 588 + oi],
trackLength + oi * 4 - _offsetedCRCNulls[iTrack, 20 * 588 + oi] * 2); trackLength + oi * 4 - _CRCNL[iTrack, 20 * 588 + oi] * 2);
} }
else // oi == 0 else // oi == 0
{ {
// Use 0xffffffff as an initial state // Use 0xffffffff as an initial state
crc = _crc32.Combine(0xffffffff, _offsetedCRCWN[iTrack, 20 * 588], trackLength - _offsetedCRCNulls[iTrack, 20 * 588] * 2); crc = _crc32.Combine(0xffffffff, _CRCWN[iTrack, 0], trackLength - _CRCNL[iTrack, 0] * 2);
} }
} }
_offsetedCRCWNRes[iTrack, _arOffsetRange + oi] = crc ^ 0xffffffff; _CacheCRCWN[iTrack, _arOffsetRange + oi] = crc ^ 0xffffffff;
} }
return _offsetedCRCWNRes[iTrack, _arOffsetRange + oi]; return _CacheCRCWN[iTrack, _arOffsetRange + oi];
} }
public uint CRCLOG(int iTrack) public uint CRCLOG(int iTrack)
@@ -345,29 +323,52 @@ namespace CUETools.AccurateRip
public uint CRC450(int iTrack, int oi) public uint CRC450(int iTrack, int oi)
{ {
return _offsetedFrame450CRC[iTrack, _arOffsetRange - oi]; uint crca = _CRCAR[iTrack + 1, 20 * 588 + 5 * 588 + oi];
uint crcb = _CRCAR[iTrack + 1, 20 * 588 + 6 * 588 + oi];
uint suma = _CRCSM[iTrack + 1, 20 * 588 + 5 * 588 + oi];
uint sumb = _CRCSM[iTrack + 1, 20 * 588 + 6 * 588 + oi];
uint offs = 450 * 588 + (uint)oi;
return crcb - crca - offs * (sumb - suma);
} }
/// <summary>
/// This function calculates three different CRCs and also
/// collects some additional information for the purposes of
/// offset detection.
///
/// crcar is AccurateRip CRC
/// crc32 is CRC32
/// crcwn is CRC32 without null samples (EAC)
/// crcsm is sum of samples
/// crcnulls is a count of null samples
/// </summary>
/// <param name="pSampleBuff"></param>
/// <param name="count"></param>
/// <param name="currentOffset"></param>
/// <param name="offs"></param>
public unsafe void CalculateCRCs(int* pSampleBuff, int count, int currentOffset, int offs) public unsafe void CalculateCRCs(int* pSampleBuff, int count, int currentOffset, int offs)
{ {
uint crcar = _offsetedCRCAR[_currentTrack, 20 * 588]; uint crcar = _CRCAR[_currentTrack, 0];
uint crcsm = _offsetedCRCSM[_currentTrack, 20 * 588]; uint crcsm = _CRCSM[_currentTrack, 0];
uint crc = _offsetedCRC32[_currentTrack, 20 * 588]; uint crc32 = _CRC32[_currentTrack, 0];
uint crcwn = _offsetedCRCWN[_currentTrack, 20 * 588]; uint crcwn = _CRCWN[_currentTrack, 0];
int crcnulls = _offsetedCRCNulls[_currentTrack, 20 * 588]; int crcnulls = _CRCNL[_currentTrack, 0];
fixed (uint* t = _crc32.table) fixed (uint* t = _crc32.table)
{ {
for (int i = 0; i < count; i++) for (int i = 0; i < count; i++)
{ {
_offsetedCRCAR[_currentTrack, offs + i] = crcar; if (offs >= 0)
_offsetedCRCSM[_currentTrack, offs + i] = crcsm; {
_offsetedCRC32[_currentTrack, offs + i] = crc; _CRCAR[_currentTrack, offs + i] = crcar;
_offsetedCRCWN[_currentTrack, offs + i] = crcwn; _CRCSM[_currentTrack, offs + i] = crcsm;
_offsetedCRCNulls[_currentTrack, offs + i] = crcnulls; _CRC32[_currentTrack, offs + i] = crc32;
_CRCWN[_currentTrack, offs + i] = crcwn;
_CRCNL[_currentTrack, offs + i] = crcnulls;
}
uint lo = (uint)*(pSampleBuff++); uint lo = (uint)*(pSampleBuff++);
crc = (crc >> 8) ^ t[(byte)(crc ^ lo)]; crc32 = (crc32 >> 8) ^ t[(byte)(crc32 ^ lo)];
crc = (crc >> 8) ^ t[(byte)(crc ^ (lo >> 8))]; crc32 = (crc32 >> 8) ^ t[(byte)(crc32 ^ (lo >> 8))];
if (lo != 0) if (lo != 0)
{ {
crcwn = (crcwn >> 8) ^ t[(byte)(crcwn ^ lo)]; crcwn = (crcwn >> 8) ^ t[(byte)(crcwn ^ lo)];
@@ -376,8 +377,8 @@ namespace CUETools.AccurateRip
else crcnulls++; else crcnulls++;
uint hi = (uint)*(pSampleBuff++); uint hi = (uint)*(pSampleBuff++);
crc = (crc >> 8) ^ t[(byte)(crc ^ hi)]; crc32 = (crc32 >> 8) ^ t[(byte)(crc32 ^ hi)];
crc = (crc >> 8) ^ t[(byte)(crc ^ (hi >> 8))]; crc32 = (crc32 >> 8) ^ t[(byte)(crc32 ^ (hi >> 8))];
if (hi != 0) if (hi != 0)
{ {
crcwn = (crcwn >> 8) ^ t[(byte)(crcwn ^ hi)]; crcwn = (crcwn >> 8) ^ t[(byte)(crcwn ^ hi)];
@@ -390,57 +391,12 @@ namespace CUETools.AccurateRip
crcar += sampleValue * (uint)(currentOffset + i + 1); crcar += sampleValue * (uint)(currentOffset + i + 1);
} }
} }
//_offsetedCRCAR[_currentTrack, offs + count] = crcar;
//_offsetedCRCSM[_currentTrack, offs + count] = crcsm;
_offsetedCRCAR[_currentTrack, 20 * 588] = crcar; _CRCAR[_currentTrack, 0] = crcar;
_offsetedCRCSM[_currentTrack, 20 * 588] = crcsm; _CRCSM[_currentTrack, 0] = crcsm;
_offsetedCRC32[_currentTrack, 20 * 588] = crc; _CRC32[_currentTrack, 0] = crc32;
_offsetedCRCWN[_currentTrack, 20 * 588] = crcwn; _CRCWN[_currentTrack, 0] = crcwn;
_offsetedCRCNulls[_currentTrack, 20 * 588] = crcnulls; _CRCNL[_currentTrack, 0] = crcnulls;
}
public unsafe void CalculateCRCs(int* pSampleBuff, int count, int currentOffset)
{
uint crcar = _offsetedCRCAR[_currentTrack, 20 * 588];
uint crcsm = _offsetedCRCSM[_currentTrack, 20 * 588];
uint crc = _offsetedCRC32[_currentTrack, 20 * 588];
uint crcwn = _offsetedCRCWN[_currentTrack, 20 * 588];
int crcnulls = _offsetedCRCNulls[_currentTrack, 20 * 588];
fixed (uint* t = _crc32.table)
{
for (int i = 0; i < count; i++)
{
uint lo = (uint)*(pSampleBuff++);
crc = (crc >> 8) ^ t[(byte)(crc ^ lo)];
crc = (crc >> 8) ^ t[(byte)(crc ^ (lo >> 8))];
if (lo != 0)
{
crcwn = (crcwn >> 8) ^ t[(byte)(crcwn ^ lo)];
crcwn = (crcwn >> 8) ^ t[(byte)(crcwn ^ (lo >> 8))];
}
else crcnulls++;
uint hi = (uint)*(pSampleBuff++);
crc = (crc >> 8) ^ t[(byte)(crc ^ hi)];
crc = (crc >> 8) ^ t[(byte)(crc ^ (hi >> 8))];
if (hi != 0)
{
crcwn = (crcwn >> 8) ^ t[(byte)(crcwn ^ hi)];
crcwn = (crcwn >> 8) ^ t[(byte)(crcwn ^ (hi >> 8))];
}
else crcnulls++;
uint sampleValue = (lo & 0xffff) + (hi << 16);
crcsm += sampleValue;
crcar += sampleValue * (uint)(currentOffset + i + 1);
}
}
_offsetedCRCAR[_currentTrack, 20 * 588] = crcar;
_offsetedCRCSM[_currentTrack, 20 * 588] = crcsm;
_offsetedCRC32[_currentTrack, 20 * 588] = crc;
_offsetedCRCWN[_currentTrack, 20 * 588] = crcwn;
_offsetedCRCNulls[_currentTrack, 20 * 588] = crcnulls;
} }
public void Write(AudioBuffer sampleBuffer) public void Write(AudioBuffer sampleBuffer)
@@ -462,15 +418,14 @@ namespace CUETools.AccurateRip
fixed (int* pSampleBuff = &sampleBuffer.Samples[pos, 0]) fixed (int* pSampleBuff = &sampleBuffer.Samples[pos, 0])
//fixed (byte* pByteBuff = &sampleBuffer.Bytes[pos * sampleBuffer.BlockAlign]) //fixed (byte* pByteBuff = &sampleBuffer.Bytes[pos * sampleBuffer.BlockAlign])
{ {
if (currentSector < 5 || (_currentTrack == 1 && currentSector < 10)) if (currentSector < 10)
CalculateCRCs(pSampleBuff, copyCount, currentOffset, currentOffset); CalculateCRCs(pSampleBuff, copyCount, currentOffset, currentOffset);
else if (remaingSectors < 5 || (_currentTrack == _toc.AudioTracks && remaingSectors < 10)) else if (remaingSectors < 10)
CalculateCRCs(pSampleBuff, copyCount, currentOffset, 20 * 588 - (int)_samplesRemTrack); CalculateCRCs(pSampleBuff, copyCount, currentOffset, 20 * 588 - (int)_samplesRemTrack);
else if (currentSector >= 445 && currentSector <= 455)
CalculateCRCs(pSampleBuff, copyCount, currentOffset, 20 * 588 + currentOffset - 445 * 588);
else else
CalculateCRCs(pSampleBuff, copyCount, currentOffset); CalculateCRCs(pSampleBuff, copyCount, currentOffset, -1);
if (currentSector >= 440 && currentSector <= 460)
CalculateFrame450CRCs(pSampleBuff, copyCount, _currentTrack - 1, currentOffset);
} }
} }
pos += copyCount; pos += copyCount;
@@ -482,27 +437,19 @@ namespace CUETools.AccurateRip
public void Init() public void Init()
{ {
_offsetedCRCAR = new uint[_toc.AudioTracks + 1, 20 * 588 + 1]; _CRCAR = new uint[_toc.AudioTracks + 1, 31 * 588];
_offsetedCRCSM = new uint[_toc.AudioTracks + 1, 20 * 588 + 1]; _CRCSM = new uint[_toc.AudioTracks + 1, 31 * 588];
_offsetedCRC32 = new uint[_toc.AudioTracks + 1, 20 * 588 + 1]; _CRC32 = new uint[_toc.AudioTracks + 1, 31 * 588];
_offsetedCRC32Res = new uint[_toc.AudioTracks + 1, 20 * 588 + 1]; _CacheCRC32 = new uint[_toc.AudioTracks + 1, 31 * 588];
_offsetedCRCWN = new uint[_toc.AudioTracks + 1, 20 * 588 + 1]; _CRCWN = new uint[_toc.AudioTracks + 1, 31 * 588];
_offsetedCRCWNRes = new uint[_toc.AudioTracks + 1, 20 * 588 + 1]; _CacheCRCWN = new uint[_toc.AudioTracks + 1, 31 * 588];
_offsetedCRCNulls = new int[_toc.AudioTracks + 1, 20 * 588 + 1]; _CRCNL = new int[_toc.AudioTracks + 1, 31 * 588];
_offsetedFrame450CRC = new uint[_toc.AudioTracks, 20 * 588];
_currentTrack = 0; _currentTrack = 0;
_sampleCount = _toc[_toc.FirstAudio][0].Start * 588; _sampleCount = _toc[_toc.FirstAudio][0].Start * 588;
_samplesRemTrack = _toc[_toc.FirstAudio].Pregap * 588; _samplesRemTrack = _toc[_toc.FirstAudio].Pregap * 588;
CheckPosition(); CheckPosition();
} }
public void CreateBackup(int writeOffset)
{
_backupCRC = new uint[_toc.AudioTracks];
for (int i = 0; i < _toc.AudioTracks; i++)
_backupCRC[i] = CRC(i, writeOffset);
}
private void CheckPosition() private void CheckPosition()
{ {
while (_samplesRemTrack <= 0) while (_samplesRemTrack <= 0)
@@ -985,16 +932,14 @@ namespace CUETools.AccurateRip
int _currentTrack; int _currentTrack;
private List<AccDisk> _accDisks; private List<AccDisk> _accDisks;
private HttpStatusCode _accResult; private HttpStatusCode _accResult;
private uint[,] _offsetedCRCAR; private uint[,] _CRCAR;
private uint[,] _offsetedCRCSM; private uint[,] _CRCSM;
private uint[,] _offsetedCRC32; private uint[,] _CRC32;
private uint[,] _offsetedCRCWN; private uint[,] _CRCWN;
private uint[,] _offsetedCRCWNRes; private int[,] _CRCNL;
private int[,] _offsetedCRCNulls; private uint[,] _CacheCRCWN;
private uint[,] _offsetedCRC32Res; private uint[,] _CacheCRC32;
private uint[,] _offsetedFrame450CRC;
private uint[] _CRCLOG; private uint[] _CRCLOG;
private uint[] _backupCRC;
Crc32 _crc32; Crc32 _crc32;

30
CUETools/CUETools.TestCodecs/AccurateRipVerifyTest.cs
View File

@@ -20,7 +20,9 @@ namespace CUETools.TestCodecs
private TestContext testContextInstance; private TestContext testContextInstance;
private CDImageLayout toc; private CDImageLayout toc;
private CDImageLayout toc2;
private AccurateRipVerify ar; private AccurateRipVerify ar;
private AccurateRipVerify ar2;
/// <summary> /// <summary>
///Gets or sets the test context which provides ///Gets or sets the test context which provides
@@ -66,8 +68,14 @@ namespace CUETools.TestCodecs
toc.AddTrack(new CDTrack(3, 99, 37, true, false)); toc.AddTrack(new CDTrack(3, 99, 37, true, false));
toc[1][0].Start = 0; toc[1][0].Start = 0;
ar = new AccurateRipVerify(toc); ar = new AccurateRipVerify(toc);
toc2 = new CDImageLayout();
toc2.AddTrack(new CDTrack(1, 0, toc.AudioLength, true, false));
toc2.AddTrack(new CDTrack(2, toc.AudioLength, 750, true, false));
ar2 = new AccurateRipVerify(toc2);
Random rnd = new Random(2314); Random rnd = new Random(2314);
for (int sector = 0; sector < toc.AudioLength; sector++) for (int sector = 0; sector < toc2.AudioLength; sector++)
{ {
AudioBuffer buff = new AudioBuffer(AudioPCMConfig.RedBook, 588); AudioBuffer buff = new AudioBuffer(AudioPCMConfig.RedBook, 588);
buff.Length = 588; buff.Length = 588;
@@ -76,7 +84,9 @@ namespace CUETools.TestCodecs
buff.Samples[i, 0] = rnd.Next(-32768, 32767); buff.Samples[i, 0] = rnd.Next(-32768, 32767);
buff.Samples[i, 1] = rnd.Next(-32768, 32767); buff.Samples[i, 1] = rnd.Next(-32768, 32767);
} }
ar.Write(buff); if (sector < toc.AudioLength)
ar.Write(buff);
ar2.Write(buff);
} }
} }
@@ -100,6 +110,8 @@ namespace CUETools.TestCodecs
Assert.AreEqual<uint>(0474131972, ar.CRC32(1), "CRC32[1] was not set correctly."); Assert.AreEqual<uint>(0474131972, ar.CRC32(1), "CRC32[1] was not set correctly.");
Assert.AreEqual<uint>(1685633822, ar.CRC32(2), "CRC32[2] was not set correctly."); Assert.AreEqual<uint>(1685633822, ar.CRC32(2), "CRC32[2] was not set correctly.");
Assert.AreEqual<uint>(2747309238, ar.CRC32(3), "CRC32[3] was not set correctly."); Assert.AreEqual<uint>(2747309238, ar.CRC32(3), "CRC32[3] was not set correctly.");
Assert.AreEqual<uint>(2884775698, ar2.CRC32(1), "CRC32[1](2) was not set correctly.");
} }
/// <summary> /// <summary>
@@ -116,6 +128,8 @@ namespace CUETools.TestCodecs
Assert.AreEqual<uint>(4050516109, ar.CRC32(2, -1), "CRC32[2][-1] was not set correctly."); Assert.AreEqual<uint>(4050516109, ar.CRC32(2, -1), "CRC32[2][-1] was not set correctly.");
Assert.AreEqual<uint>(1860362251, ar.CRC32(3, 15), "CRC32[3][15] was not set correctly."); Assert.AreEqual<uint>(1860362251, ar.CRC32(3, 15), "CRC32[3][15] was not set correctly.");
Assert.AreEqual<uint>(0761448415, ar.CRC32(3, -1), "CRC32[3][-1] was not set correctly."); Assert.AreEqual<uint>(0761448415, ar.CRC32(3, -1), "CRC32[3][-1] was not set correctly.");
Assert.AreEqual<uint>(1987827634, ar2.CRC32(1, -7), "CRC32[1,13](2) was not set correctly.");
} }
/// <summary> /// <summary>
@@ -163,6 +177,18 @@ namespace CUETools.TestCodecs
Assert.AreEqual<uint>(0474131972, ar.CRCWONULL(1), "CRC32WONULL[1] was not set correctly."); Assert.AreEqual<uint>(0474131972, ar.CRCWONULL(1), "CRC32WONULL[1] was not set correctly.");
Assert.AreEqual<uint>(1405611463, ar.CRCWONULL(2), "CRC32WONULL[2] was not set correctly."); Assert.AreEqual<uint>(1405611463, ar.CRCWONULL(2), "CRC32WONULL[2] was not set correctly.");
Assert.AreEqual<uint>(2747309238, ar.CRCWONULL(3), "CRC32WONULL[3] was not set correctly."); Assert.AreEqual<uint>(2747309238, ar.CRCWONULL(3), "CRC32WONULL[3] was not set correctly.");
Assert.AreEqual<uint>(0509527097, ar2.CRCWONULL(1), "CRC32WONULL[1](2) was not set correctly.");
}
/// <summary>
///A test for CRC450
///</summary>
[TestMethod()]
public void CRC450Test()
{
Assert.AreEqual<uint>(1480802016, ar2.CRC450(1, 00), "CRC450[1,00] was not set correctly.");
Assert.AreEqual<uint>(2012115554, ar2.CRC450(1, 55), "CRC450[1,55] was not set correctly.");
Assert.AreEqual<uint>(1483829604, ar2.CRC450(1, -3), "CRC450[1,-3] was not set correctly.");
} }
} }