mirror of
https://github.com/crskycode/GARbro.git
synced 2024-12-24 03:44:13 +08:00
(MioDecoder): implemented PCM and MSS decompression.
This commit is contained in:
morkt
parent
c5484a3c35
commit
92604f96cc
@ -135,8 +135,8 @@ namespace GameRes.Formats.Entis
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format.FormatTag = 1;
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format.Channels = (ushort)m_info.ChannelCount;
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format.SamplesPerSecond = m_info.SamplesPerSec;
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format.BitsPerSample = 16;
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format.BlockAlign = (ushort)(2*format.Channels);
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format.BitsPerSample = (ushort)m_info.BitsPerSample;
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format.BlockAlign = (ushort)(m_info.BitsPerSample/8*format.Channels);
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format.AverageBytesPerSecond = (uint)pcm_bitrate/8;
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this.Format = format;
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m_decoded_stream = LoadChunks();
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@ -334,6 +334,7 @@ namespace GameRes.Formats.Entis
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int[] m_ptrBuffer1;
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int[] m_ptrBuffer2;
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sbyte[] m_ptrBuffer3;
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byte[] m_ptrBuffer4;
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byte[] m_ptrDivisionTable;
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byte[] m_ptrRevolveCode;
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int[] m_ptrWeightCode;
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@ -342,18 +343,17 @@ namespace GameRes.Formats.Entis
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float[] m_ptrMatrixBuf;
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float[] m_ptrInternalBuf;
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float[] m_ptrWorkBuf;
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float[] m_ptrWorkBuf2;
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float[] m_ptrWeightTable;
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float[] m_ptrLastDCT;
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int m_ptrNextDivision;
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byte[] m_ptrNextRevCode;
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int m_ptrNextRevCode;
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int m_ptrNextWeight;
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int m_ptrNextCoefficient;
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int m_ptrNextSource;
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int m_ptrLastDCTBuf;
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int m_nSubbandDegree;
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uint m_nDegreeNum;
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int m_nDegreeNum;
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EriSinCos[] m_pRevolveParam;
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readonly int[] m_nFrequencyPoint = new int[7];
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@ -419,7 +419,6 @@ namespace GameRes.Formats.Entis
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m_ptrMatrixBuf = new float[block_size];
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m_ptrInternalBuf = new float[block_size];
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m_ptrWorkBuf = new float[subband];
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m_ptrWorkBuf2 = new float[subband];
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m_ptrWeightTable = new float[subband];
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@ -470,12 +469,91 @@ namespace GameRes.Formats.Entis
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bool DecodeSoundPCM8 (ERISADecodeContext context, MioDataHeader datahdr, byte[] ptrWaveBuf, int wave_pos)
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{
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throw new NotImplementedException ("MioDecoder.DecodeSoundPCM8 not implemented");
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uint nSampleCount = datahdr.SampleCount;
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if (nSampleCount > m_nBufLength)
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{
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m_ptrBuffer3 = new sbyte [nSampleCount * m_mioih.ChannelCount];
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m_nBufLength = nSampleCount;
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}
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if (0 != (datahdr.Flags & MIO_LEAD_BLOCK))
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{
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(context as HuffmanDecodeContext).PrepareToDecodeERINACode();
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}
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uint nBytes = nSampleCount * (uint)m_mioih.ChannelCount;
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if (context.DecodeBytes (m_ptrBuffer3, nBytes) < nBytes)
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{
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return false;
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}
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int ptrSrcBuf = 0; // (PBYTE) m_ptrBuffer3;
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int nStep = m_mioih.ChannelCount;
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for (int i = 0; i < m_mioih.ChannelCount; i ++ )
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{
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int ptrDstBuf = wave_pos + i;
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sbyte bytValue = 0;
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for (uint j = 0; j < nSampleCount; j++)
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{
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bytValue += m_ptrBuffer3[ptrSrcBuf++];
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ptrWaveBuf[ptrDstBuf] = (byte)bytValue;
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ptrDstBuf += nStep;
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}
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}
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return true;
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}
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bool DecodeSoundPCM16 (ERISADecodeContext context, MioDataHeader datahdr, byte[] ptrWaveBuf, int wave_pos)
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{
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throw new NotImplementedException ("MioDecoder.DecodeSoundPCM16 not implemented");
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uint nSampleCount = datahdr.SampleCount;
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uint nChannelCount = (uint)m_mioih.ChannelCount;
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uint nAllSampleCount = nSampleCount * nChannelCount;
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if (nSampleCount > m_nBufLength)
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{
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m_ptrBuffer3 = new sbyte[nAllSampleCount * sizeof(short)];
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m_ptrBuffer4 = new byte[nAllSampleCount * sizeof(short)];
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m_nBufLength = nSampleCount;
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}
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if (0 != (datahdr.Flags & MIO_LEAD_BLOCK))
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{
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(context as HuffmanDecodeContext).PrepareToDecodeERINACode();
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}
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uint nBytes = nAllSampleCount * sizeof(short);
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if (context.DecodeBytes (m_ptrBuffer3, nBytes) < nBytes)
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{
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return false;
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}
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int pbytSrcBuf1, pbytSrcBuf2, pbytDstBuf;
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for (int i = 0; i < m_mioih.ChannelCount; i++)
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{
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int nOffset = i * (int)nSampleCount * sizeof(short);
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pbytSrcBuf1 = nOffset; // ((PBYTE) m_ptrBuffer3) + nOffset;
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pbytSrcBuf2 = pbytSrcBuf1 + (int)nSampleCount; // pbytSrcBuf1 + nSampleCount;
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pbytDstBuf = nOffset; // ((PBYTE) m_ptrBuffer4) + nOffset;
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for (uint j = 0; j < nSampleCount; j ++)
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{
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sbyte bytLow = m_ptrBuffer3[pbytSrcBuf2 + j];
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sbyte bytHigh = m_ptrBuffer3[pbytSrcBuf1 + j];
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m_ptrBuffer4[pbytDstBuf + j * sizeof(short) + 0] = (byte)bytLow;
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m_ptrBuffer4[pbytDstBuf + j * sizeof(short) + 1] = (byte)(bytHigh ^ (bytLow >> 7));
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}
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}
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int ptrSrcBuf = 0; // (SWORD*) m_ptrBuffer4;
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int nStep = m_mioih.ChannelCount;
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for (int i = 0; i < m_mioih.ChannelCount; i++)
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{
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int ptrDstBuf = wave_pos + i*sizeof(short); // (SWORD*) ptrWaveBuf;
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short wValue = 0;
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short wDelta = 0;
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for (uint j = 0; j < nSampleCount; j++)
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{
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wDelta += LittleEndian.ToInt16 (m_ptrBuffer4, ptrSrcBuf);
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wValue += wDelta;
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LittleEndian.Pack (wValue, ptrWaveBuf, ptrDstBuf); // *ptrDstBuf = wValue;
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ptrSrcBuf += sizeof(short);
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ptrDstBuf += nStep;
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}
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}
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return true;
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}
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static readonly int[] FreqWidth = new int[7] { -6, -6, -5, -4, -3, -2, -1 };
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@ -490,7 +568,7 @@ namespace GameRes.Formats.Entis
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j += nFrequencyWidth;
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}
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m_nSubbandDegree = nSubbandDegree;
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m_nDegreeNum = (1u << nSubbandDegree);
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m_nDegreeNum = 1 << nSubbandDegree;
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}
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const uint MIO_LEAD_BLOCK = 0x01;
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@ -656,7 +734,7 @@ namespace GameRes.Formats.Entis
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nSamples = pRestSamples[j];
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if (nSamples > m_nDegreeNum)
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{
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nSamples = m_nDegreeNum;
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nSamples = (uint)m_nDegreeNum;
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}
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DecodePostBlock (ptrWaveBuf, ptrDstBuf[j], nSamples);
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pRestSamples[j] -= nSamples;
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@ -682,7 +760,7 @@ namespace GameRes.Formats.Entis
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nSamples = pRestSamples[j];
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if (nSamples > m_nDegreeNum)
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{
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nSamples = m_nDegreeNum;
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nSamples = (uint)m_nDegreeNum;
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}
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DecodeInternalBlock (ptrWaveBuf, ptrDstBuf[j], nSamples);
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pRestSamples[j] -= nSamples;
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@ -706,7 +784,7 @@ namespace GameRes.Formats.Entis
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nSamples = pRestSamples[i];
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if (nSamples > m_nDegreeNum)
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{
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nSamples = m_nDegreeNum;
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nSamples = (uint)m_nDegreeNum;
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}
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DecodePostBlock (ptrWaveBuf, ptrDstBuf[i], nSamples);
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pRestSamples[i] -= nSamples;
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@ -720,19 +798,17 @@ namespace GameRes.Formats.Entis
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{
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int nWeightCode = m_ptrWeightCode[m_ptrNextWeight++];
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int nCoefficient = m_ptrCoefficient[m_ptrNextCoefficient++];
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IQuantumize (m_ptrMatrixBuf, 0, m_ptrBuffer2, m_ptrNextSource, (int)m_nDegreeNum, nWeightCode, nCoefficient);
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IQuantumize (m_ptrMatrixBuf, 0, m_ptrBuffer2, m_ptrNextSource, m_nDegreeNum, nWeightCode, nCoefficient);
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m_ptrNextSource += (int)m_nDegreeNum;
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eriOddGivensInverseMatrix (m_ptrMatrixBuf, 0, m_pRevolveParam, m_nSubbandDegree);
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eriFastIPLOT (m_ptrMatrixBuf, 0, m_nSubbandDegree);
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eriFastILOT (m_ptrWorkBuf, m_ptrLastDCT, m_ptrLastDCTBuf, m_ptrMatrixBuf, m_nSubbandDegree);
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eriFastILOT (m_ptrWorkBuf, m_ptrLastDCT, m_ptrLastDCTBuf, m_ptrMatrixBuf, 0, m_nSubbandDegree);
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for (uint i = 0; i < m_nDegreeNum; i++)
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{
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m_ptrLastDCT[m_ptrLastDCTBuf + i] = m_ptrMatrixBuf[i];
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m_ptrMatrixBuf[i] = m_ptrWorkBuf[i];
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}
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eriFastIDCT (m_ptrInternalBuf, m_ptrMatrixBuf, 1, m_ptrWorkBuf, m_nSubbandDegree);
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Array.Copy (m_ptrMatrixBuf, 0, m_ptrLastDCT, m_ptrLastDCTBuf, m_nDegreeNum);
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Array.Copy (m_ptrWorkBuf, 0, m_ptrMatrixBuf, 0, m_nDegreeNum);
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eriFastIDCT (m_ptrInternalBuf, m_ptrMatrixBuf, 0, 1, m_ptrWorkBuf, m_nSubbandDegree);
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if (nSamples != 0)
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{
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eriRoundR32ToWordArray (ptrDst, iDst, m_mioih.ChannelCount, m_ptrInternalBuf, (int)nSamples);
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@ -744,13 +820,13 @@ namespace GameRes.Formats.Entis
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int nWeightCode = m_ptrWeightCode[m_ptrNextWeight++];
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int nCoefficient = m_ptrCoefficient[m_ptrNextCoefficient++];
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uint i;
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uint nHalfDegree = m_nDegreeNum / 2;
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uint nHalfDegree = (uint)m_nDegreeNum / 2;
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for (i = 0; i < nHalfDegree; i++)
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{
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m_ptrBuffer1[i * 2] = 0;
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m_ptrBuffer1[i * 2 + 1] = m_ptrBuffer2[m_ptrNextSource++];
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}
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IQuantumize (m_ptrLastDCT, m_ptrLastDCTBuf, m_ptrBuffer1, 0, (int)m_nDegreeNum, nWeightCode, nCoefficient);
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IQuantumize (m_ptrLastDCT, m_ptrLastDCTBuf, m_ptrBuffer1, 0, m_nDegreeNum, nWeightCode, nCoefficient);
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eriOddGivensInverseMatrix (m_ptrLastDCT, m_ptrLastDCTBuf, m_pRevolveParam, m_nSubbandDegree);
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for (i = 0; i < m_nDegreeNum; i += 2)
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{
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@ -764,13 +840,13 @@ namespace GameRes.Formats.Entis
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int nWeightCode = m_ptrWeightCode[m_ptrNextWeight++];
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int nCoefficient = m_ptrCoefficient[m_ptrNextCoefficient++];
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uint i;
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uint nHalfDegree = m_nDegreeNum / 2;
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uint nHalfDegree = (uint)m_nDegreeNum / 2;
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for (i = 0; i < nHalfDegree; i++)
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{
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m_ptrBuffer1[i * 2] = 0;
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m_ptrBuffer1[i * 2 + 1] = m_ptrBuffer2[m_ptrNextSource++];
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}
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IQuantumize (m_ptrMatrixBuf, 0, m_ptrBuffer1, 0, (int)m_nDegreeNum, nWeightCode, nCoefficient);
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IQuantumize (m_ptrMatrixBuf, 0, m_ptrBuffer1, 0, m_nDegreeNum, nWeightCode, nCoefficient);
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eriOddGivensInverseMatrix (m_ptrMatrixBuf, 0, m_pRevolveParam, m_nSubbandDegree);
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for (i = 0; i < m_nDegreeNum; i += 2)
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@ -779,19 +855,355 @@ namespace GameRes.Formats.Entis
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}
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eriFastIPLOT (m_ptrMatrixBuf, 0, m_nSubbandDegree);
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eriFastILOT (m_ptrWorkBuf, m_ptrLastDCT, m_ptrLastDCTBuf, m_ptrMatrixBuf, m_nSubbandDegree);
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eriFastILOT (m_ptrWorkBuf, m_ptrLastDCT, m_ptrLastDCTBuf, m_ptrMatrixBuf, 0, m_nSubbandDegree);
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for (i = 0; i < m_nDegreeNum; i++)
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{
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m_ptrMatrixBuf[i] = m_ptrWorkBuf[i];
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}
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eriFastIDCT (m_ptrInternalBuf, m_ptrMatrixBuf, 1, m_ptrWorkBuf, m_nSubbandDegree);
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Array.Copy (m_ptrWorkBuf, 0, m_ptrMatrixBuf, 0, m_nDegreeNum);
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eriFastIDCT (m_ptrInternalBuf, m_ptrMatrixBuf, 0, 1, m_ptrWorkBuf, m_nSubbandDegree);
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if (nSamples != 0)
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{
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eriRoundR32ToWordArray (ptrDst, iDst, m_mioih.ChannelCount, m_ptrInternalBuf, (int)nSamples);
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}
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}
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bool DecodeSoundDCT_MSS (ERISADecodeContext context, MioDataHeader datahdr, byte[] ptrWaveBuf, int wave_pos)
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{
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uint nDegreeWidth = 1u << m_mioih.SubbandDegree;
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uint nSampleCount = (datahdr.SampleCount + nDegreeWidth - 1) & ~(nDegreeWidth - 1);
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uint nSubbandCount = (nSampleCount >> m_mioih.SubbandDegree);
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uint nChannelCount = (uint)m_mioih.ChannelCount;
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uint nAllSampleCount = nSampleCount * nChannelCount;
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uint nAllSubbandCount = nSubbandCount;
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if (nSampleCount > m_nBufLength)
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{
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m_ptrBuffer2 = new int[nAllSampleCount];
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m_ptrBuffer3 = new sbyte[nAllSampleCount * sizeof(short)];
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m_ptrDivisionTable = new byte[nAllSubbandCount];
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m_ptrRevolveCode = new byte[nAllSubbandCount * 10];
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m_ptrWeightCode = new int[nAllSubbandCount * 10];
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m_ptrCoefficient = new int[nAllSubbandCount * 10];
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m_nBufLength = nSampleCount;
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}
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if (context.GetABit() != 0)
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{
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return false;
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}
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int nLastDivision = -1;
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m_ptrNextDivision = 0; // within m_ptrDivisionTable;
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m_ptrNextRevCode = 0; // within m_ptrRevolveCode;
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m_ptrNextWeight = 0; // within m_ptrWeightCode;
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m_ptrNextCoefficient = 0; // within m_ptrCoefficient;
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uint i, j, k;
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for (i = 0; i < nSubbandCount; i ++)
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{
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int nDivisionCode = (int)context.GetNBits (2);
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m_ptrDivisionTable[m_ptrNextDivision++] = (byte)nDivisionCode;
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bool fLeadBlock = false;
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if (nDivisionCode != nLastDivision)
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{
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if (i != 0)
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{
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m_ptrRevolveCode[m_ptrNextRevCode++] = (byte)context.GetNBits (2);
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m_ptrWeightCode[m_ptrNextWeight++] = (int)context.GetNBits (32);
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m_ptrCoefficient[m_ptrNextCoefficient++] = (int)context.GetNBits (16);
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}
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fLeadBlock = true;
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nLastDivision = nDivisionCode;
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}
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uint nDivisionCount = 1u << nDivisionCode;
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for (k = 0; k < nDivisionCount; k++)
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{
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if (fLeadBlock)
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{
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m_ptrRevolveCode[m_ptrNextRevCode++] = (byte)context.GetNBits (2);
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fLeadBlock = false;
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}
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else
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{
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m_ptrRevolveCode[m_ptrNextRevCode++] = (byte)context.GetNBits (4);
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}
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m_ptrWeightCode[m_ptrNextWeight++] = (int)context.GetNBits (32);
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m_ptrCoefficient[m_ptrNextCoefficient++] = (int)context.GetNBits (16);
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}
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}
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if (nSubbandCount > 0)
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{
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m_ptrRevolveCode[m_ptrNextRevCode++] = (byte)context.GetNBits (2);
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m_ptrWeightCode[m_ptrNextWeight++] = (int)context.GetNBits (32);
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m_ptrCoefficient[m_ptrNextCoefficient++] = (int)context.GetNBits (16);
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}
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if (context.GetABit() != 0)
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{
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return false;
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}
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if (0 != (datahdr.Flags & MIO_LEAD_BLOCK))
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{
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if (m_mioih.Architecture != EriCode.Nemesis)
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{
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(context as HuffmanDecodeContext).PrepareToDecodeERINACode();
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}
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else
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{
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throw new NotImplementedException ("Nemesis encoding not implemented");
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// context.PrepareToDecodeERISACode( );
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}
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}
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else if (m_mioih.Architecture == EriCode.Nemesis)
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{
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throw new NotImplementedException ("Nemesis encoding not implemented");
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// context.InitializeERISACode( );
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}
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if (m_mioih.Architecture != EriCode.Nemesis)
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{
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if (context.DecodeBytes (m_ptrBuffer3, nAllSampleCount * 2) < nAllSampleCount * 2)
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{
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return false;
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}
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int ptrHBuf = 0; // within m_ptrBuffer3;
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int ptrLBuf = (int)nAllSampleCount; // within m_ptrBuffer3
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for (i = 0; i < nDegreeWidth * 2; i++)
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{
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int ptrQuantumized = (int)i; // within (PINT) m_ptrBuffer2
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for (j = 0; j < nAllSubbandCount; j++)
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{
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int nLow = m_ptrBuffer3[ptrLBuf++];
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int nHigh = m_ptrBuffer3[ptrHBuf++] ^ (nLow >> 8);
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m_ptrBuffer2[ptrQuantumized] = (nLow & 0xFF) | (nHigh << 8);
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ptrQuantumized += (int)nDegreeWidth * 2;
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}
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}
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}
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else
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{
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throw new NotImplementedException ("Nemesis encoding not implemented");
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/*
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if ( context.DecodeERISACodeWords
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( (SWORD*) m_ptrBuffer3, nAllSampleCount ) < nAllSampleCount )
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{
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return false;
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}
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for ( i = 0; i < nAllSampleCount; i ++ )
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{
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((PINT)m_ptrBuffer2)[i] = ((SWORD*)m_ptrBuffer3)[i];
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}
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*/
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}
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uint nSamples;
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uint nRestSamples = datahdr.SampleCount;
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// int ptrDstBuf = wave_pos; // within (SWORD*) ptrWaveBuf;
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|
||||
nLastDivision = -1;
|
||||
m_ptrNextDivision = 0; // m_ptrDivisionTable;
|
||||
m_ptrNextRevCode = 0; // m_ptrRevolveCode;
|
||||
m_ptrNextWeight = 0; // m_ptrWeightCode;
|
||||
m_ptrNextCoefficient = 0; // m_ptrCoefficient;
|
||||
m_ptrNextSource = 0; // (PINT) m_ptrBuffer2;
|
||||
|
||||
for (i = 0; i < nSubbandCount; i++)
|
||||
{
|
||||
int nDivisionCode = m_ptrDivisionTable[m_ptrNextDivision++];
|
||||
uint nDivisionCount = 1u << nDivisionCode;
|
||||
|
||||
bool fLeadBlock = false;
|
||||
if (nLastDivision != nDivisionCode)
|
||||
{
|
||||
if (i != 0)
|
||||
{
|
||||
nSamples = Math.Min (nRestSamples, (uint)m_nDegreeNum);
|
||||
DecodePostBlock_MSS (ptrWaveBuf, wave_pos, nSamples);
|
||||
nRestSamples -= nSamples;
|
||||
wave_pos += (int)(nSamples * nChannelCount * sizeof(short));
|
||||
}
|
||||
InitializeWithDegree (m_mioih.SubbandDegree - nDivisionCode);
|
||||
nLastDivision = nDivisionCode;
|
||||
fLeadBlock = true;
|
||||
}
|
||||
for (k = 0; k < nDivisionCount; k++)
|
||||
{
|
||||
if (fLeadBlock)
|
||||
{
|
||||
DecodeLeadBlock_MSS();
|
||||
fLeadBlock = false;
|
||||
}
|
||||
else
|
||||
{
|
||||
nSamples = nRestSamples;
|
||||
if (nSamples > m_nDegreeNum)
|
||||
{
|
||||
nSamples = (uint)m_nDegreeNum;
|
||||
}
|
||||
DecodeInternalBlock_MSS (ptrWaveBuf, wave_pos, nSamples);
|
||||
nRestSamples -= nSamples;
|
||||
wave_pos += (int)(nSamples * nChannelCount * sizeof(short));
|
||||
}
|
||||
}
|
||||
}
|
||||
if (nSubbandCount > 0)
|
||||
{
|
||||
nSamples = nRestSamples;
|
||||
if (nSamples > m_nDegreeNum)
|
||||
{
|
||||
nSamples = (uint)m_nDegreeNum;
|
||||
}
|
||||
DecodePostBlock_MSS (ptrWaveBuf, wave_pos, nSamples);
|
||||
nRestSamples -= nSamples;
|
||||
wave_pos += (int)(nSamples * nChannelCount) * sizeof(short);
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
void DecodeLeadBlock_MSS ()
|
||||
{
|
||||
uint i, j;
|
||||
uint nHalfDegree = (uint)m_nDegreeNum / 2;
|
||||
int nWeightCode = m_ptrWeightCode[m_ptrNextWeight++];
|
||||
int nCoefficient = m_ptrCoefficient[m_ptrNextCoefficient++];
|
||||
int ptrLapBuf = 0; // within m_ptrLastDCT;
|
||||
|
||||
for (i = 0; i < 2; i++)
|
||||
{
|
||||
int ptrSrcBuf = 0; // within (PINT) m_ptrBuffer1;
|
||||
for (j = 0; j < nHalfDegree; j++)
|
||||
{
|
||||
m_ptrBuffer1[ptrSrcBuf + j * 2] = 0;
|
||||
m_ptrBuffer1[ptrSrcBuf + j * 2 + 1] = m_ptrBuffer2[m_ptrNextSource++];
|
||||
}
|
||||
IQuantumize (m_ptrLastDCT, ptrLapBuf, m_ptrBuffer1, ptrSrcBuf, m_nDegreeNum, nWeightCode, nCoefficient);
|
||||
ptrLapBuf += (int)m_nDegreeNum;
|
||||
}
|
||||
int nRevCode = m_ptrRevolveCode[m_ptrNextRevCode++];
|
||||
|
||||
int ptrLapBuf1 = 0; // m_ptrLastDCT;
|
||||
int ptrLapBuf2 = (int)m_nDegreeNum; // m_ptrLastDCT
|
||||
|
||||
float rSin = (float)Math.Sin (nRevCode * Math.PI / 8);
|
||||
float rCos = (float)Math.Cos (nRevCode * Math.PI / 8);
|
||||
eriRevolve2x2 (m_ptrLastDCT, ptrLapBuf1, m_ptrLastDCT, ptrLapBuf2, rSin, rCos, 1, m_nDegreeNum);
|
||||
|
||||
ptrLapBuf = 0; //m_ptrLastDCT;
|
||||
for (i = 0; i < 2; i++)
|
||||
{
|
||||
eriOddGivensInverseMatrix (m_ptrLastDCT, ptrLapBuf, m_pRevolveParam, m_nSubbandDegree);
|
||||
|
||||
for (j = 0; j < m_nDegreeNum; j += 2)
|
||||
{
|
||||
m_ptrLastDCT[ptrLapBuf + j] = m_ptrLastDCT[ptrLapBuf + j + 1];
|
||||
}
|
||||
eriFastIPLOT (m_ptrLastDCT, ptrLapBuf, m_nSubbandDegree);
|
||||
ptrLapBuf += (int)m_nDegreeNum;
|
||||
}
|
||||
}
|
||||
|
||||
void DecodeInternalBlock_MSS (byte[] ptrDst, int iDst, uint nSamples)
|
||||
{
|
||||
int ptrSrcBuf = 0; // m_ptrMatrixBuf;
|
||||
int ptrLapBuf = 0; // m_ptrLastDCT;
|
||||
|
||||
int nWeightCode = m_ptrWeightCode[m_ptrNextWeight++];
|
||||
int nCoefficient = m_ptrCoefficient[m_ptrNextCoefficient++];
|
||||
|
||||
for (int i = 0; i < 2; i++)
|
||||
{
|
||||
IQuantumize (m_ptrMatrixBuf, ptrSrcBuf, m_ptrBuffer2, m_ptrNextSource, m_nDegreeNum, nWeightCode, nCoefficient);
|
||||
m_ptrNextSource += m_nDegreeNum;
|
||||
ptrSrcBuf += m_nDegreeNum;
|
||||
}
|
||||
int nRevCode = m_ptrRevolveCode[m_ptrNextRevCode++];
|
||||
int nRevCode1 = (nRevCode >> 2) & 0x03;
|
||||
int nRevCode2 = (nRevCode & 0x03);
|
||||
|
||||
int ptrSrcBuf1 = 0; // m_ptrMatrixBuf;
|
||||
int ptrSrcBuf2 = m_nDegreeNum; // m_ptrMatrixBuf + m_nDegreeNum;
|
||||
|
||||
float rSin = (float) Math.Sin (nRevCode1 * Math.PI / 8);
|
||||
float rCos = (float) Math.Cos (nRevCode1 * Math.PI / 8);
|
||||
eriRevolve2x2 (m_ptrMatrixBuf, ptrSrcBuf1, m_ptrMatrixBuf, ptrSrcBuf2, rSin, rCos, 2, m_nDegreeNum / 2);
|
||||
|
||||
rSin = (float) Math.Sin (nRevCode2 * Math.PI / 8);
|
||||
rCos = (float) Math.Cos (nRevCode2 * Math.PI / 8);
|
||||
eriRevolve2x2 (m_ptrMatrixBuf, ptrSrcBuf1 + 1, m_ptrMatrixBuf, ptrSrcBuf2 + 1, rSin, rCos, 2, m_nDegreeNum / 2);
|
||||
|
||||
ptrSrcBuf = 0; // m_ptrMatrixBuf;
|
||||
|
||||
for (int i = 0; i < 2; i++)
|
||||
{
|
||||
eriOddGivensInverseMatrix (m_ptrMatrixBuf, ptrSrcBuf, m_pRevolveParam, m_nSubbandDegree);
|
||||
eriFastIPLOT (m_ptrMatrixBuf, ptrSrcBuf, m_nSubbandDegree);
|
||||
eriFastILOT (m_ptrWorkBuf, m_ptrLastDCT, ptrLapBuf, m_ptrMatrixBuf, ptrSrcBuf, m_nSubbandDegree);
|
||||
|
||||
Array.Copy (m_ptrMatrixBuf, ptrSrcBuf, m_ptrLastDCT, ptrLapBuf, m_nDegreeNum);
|
||||
Array.Copy (m_ptrWorkBuf, 0, m_ptrMatrixBuf, ptrSrcBuf, m_nDegreeNum);
|
||||
|
||||
eriFastIDCT (m_ptrInternalBuf, m_ptrMatrixBuf, ptrSrcBuf, 1, m_ptrWorkBuf, m_nSubbandDegree);
|
||||
if (nSamples != 0)
|
||||
{
|
||||
eriRoundR32ToWordArray (ptrDst, iDst + (int)i*2, 2, m_ptrInternalBuf, (int)nSamples);
|
||||
}
|
||||
ptrSrcBuf += m_nDegreeNum;
|
||||
ptrLapBuf += m_nDegreeNum;
|
||||
}
|
||||
}
|
||||
|
||||
void DecodePostBlock_MSS (byte[] ptrDst, int iDst, uint nSamples)
|
||||
{
|
||||
int ptrLapBuf = 0; // m_ptrLastDCT;
|
||||
int ptrSrcBuf = 0; // m_ptrMatrixBuf;
|
||||
|
||||
int i, j;
|
||||
uint nHalfDegree = (uint)m_nDegreeNum / 2u;
|
||||
int nWeightCode = m_ptrWeightCode[m_ptrNextWeight++];
|
||||
int nCoefficient = m_ptrCoefficient[m_ptrNextCoefficient++];
|
||||
|
||||
for (i = 0; i < 2; i++)
|
||||
{
|
||||
for (j = 0; j < nHalfDegree; j++)
|
||||
{
|
||||
m_ptrBuffer1[j * 2] = 0;
|
||||
m_ptrBuffer1[j * 2 + 1] = m_ptrBuffer2[m_ptrNextSource++];
|
||||
}
|
||||
IQuantumize (m_ptrMatrixBuf, ptrSrcBuf, m_ptrBuffer1, 0, m_nDegreeNum, nWeightCode, nCoefficient);
|
||||
ptrSrcBuf += m_nDegreeNum;
|
||||
}
|
||||
float rSin, rCos;
|
||||
int nRevCode = m_ptrRevolveCode[m_ptrNextRevCode++];
|
||||
|
||||
int ptrSrcBuf1 = 0; // m_ptrMatrixBuf;
|
||||
int ptrSrcBuf2 = m_nDegreeNum; // m_ptrMatrixBuf + m_nDegreeNum;
|
||||
|
||||
rSin = (float) Math.Sin (nRevCode * Math.PI / 8);
|
||||
rCos = (float) Math.Cos (nRevCode * Math.PI / 8);
|
||||
eriRevolve2x2 (m_ptrMatrixBuf, ptrSrcBuf1, m_ptrMatrixBuf, ptrSrcBuf2, rSin, rCos, 1, m_nDegreeNum);
|
||||
|
||||
ptrSrcBuf = 0; // m_ptrMatrixBuf;
|
||||
|
||||
for (i = 0; i < 2; i ++)
|
||||
{
|
||||
eriOddGivensInverseMatrix (m_ptrMatrixBuf, ptrSrcBuf, m_pRevolveParam, m_nSubbandDegree);
|
||||
|
||||
for (j = 0; j < m_nDegreeNum; j += 2)
|
||||
{
|
||||
m_ptrMatrixBuf[ptrSrcBuf + j] = -m_ptrMatrixBuf[ptrSrcBuf + j + 1];
|
||||
}
|
||||
eriFastIPLOT (m_ptrMatrixBuf, ptrSrcBuf, m_nSubbandDegree);
|
||||
eriFastILOT (m_ptrWorkBuf, m_ptrLastDCT, ptrLapBuf, m_ptrMatrixBuf, ptrSrcBuf, m_nSubbandDegree);
|
||||
|
||||
Array.Copy (m_ptrWorkBuf, 0, m_ptrMatrixBuf, ptrSrcBuf, m_nDegreeNum);
|
||||
|
||||
eriFastIDCT (m_ptrInternalBuf, m_ptrMatrixBuf, ptrSrcBuf, 1, m_ptrWorkBuf, m_nSubbandDegree);
|
||||
if (nSamples != 0)
|
||||
{
|
||||
eriRoundR32ToWordArray (ptrDst, iDst + (int)i*2, 2, m_ptrInternalBuf, (int)nSamples);
|
||||
}
|
||||
ptrLapBuf += m_nDegreeNum;
|
||||
ptrSrcBuf += m_nDegreeNum;
|
||||
}
|
||||
}
|
||||
|
||||
void IQuantumize (float[] ptrDestination, int dst, int[] ptrQuantumized, int qsrc, int nDegreeNum, int nWeightCode, int nCoefficient)
|
||||
{
|
||||
int i, j;
|
||||
@ -837,29 +1249,9 @@ namespace GameRes.Formats.Entis
|
||||
}
|
||||
}
|
||||
|
||||
bool DecodeSoundDCT_MSS (ERISADecodeContext context, MioDataHeader datahdr, byte[] ptrWaveBuf, int wave_pos)
|
||||
{
|
||||
throw new NotImplementedException ("MioDecoder.DecodeSoundDCT_MSS not implemented");
|
||||
}
|
||||
|
||||
bool DecodeInternalBlock_MSS (byte[] ptrDst, int iDst, uint nSamples)
|
||||
{
|
||||
throw new NotImplementedException ("MioDecoder.DecodeInternalBlock_MSS not implemented");
|
||||
}
|
||||
|
||||
bool DecodeLeadBlock_MSS ()
|
||||
{
|
||||
throw new NotImplementedException ("MioDecoder.DecodeLeadBlock_MSS not implemented");
|
||||
}
|
||||
|
||||
bool DecodePostBlock_MSS (byte[] ptrDst, int iDst, uint nSamples)
|
||||
{
|
||||
throw new NotImplementedException ("MioDecoder.DecodePostBlock_MSS not implemented");
|
||||
}
|
||||
|
||||
static readonly float ERI_rCosPI4 = (float)Math.Cos (Math.PI / 4);
|
||||
static readonly float ERI_r2CosPI4 = 2 * ERI_rCosPI4;
|
||||
static readonly float[] ERI_DCTofK2 = new float[2]; // = cos ((2*i+1) / 8)
|
||||
static readonly float[] ERI_DCTofK2 = new float[2]; // = cos( (2*i+1) / 8 )
|
||||
static readonly float[] ERI_DCTofK4 = new float[4]; // = cos( (2*i+1) / 16 )
|
||||
static readonly float[] ERI_DCTofK8 = new float[8]; // = cos( (2*i+1) / 32 )
|
||||
static readonly float[] ERI_DCTofK16 = new float[16]; // = cos( (2*i+1) / 64 )
|
||||
@ -906,6 +1298,7 @@ namespace GameRes.Formats.Entis
|
||||
|
||||
static void eriRoundR32ToWordArray (byte[] ptrDst, int dst, int nStep, float[] ptrSrc, int nCount)
|
||||
{
|
||||
nStep *= 2;
|
||||
for (int i = 0; i < nCount; i++)
|
||||
{
|
||||
int nValue = eriRoundR32ToInt (ptrSrc[i]);
|
||||
@ -921,7 +1314,7 @@ namespace GameRes.Formats.Entis
|
||||
{
|
||||
LittleEndian.Pack ((short)nValue, ptrDst, dst);
|
||||
}
|
||||
dst += nStep*2;
|
||||
dst += nStep;
|
||||
}
|
||||
}
|
||||
|
||||
@ -1029,13 +1422,13 @@ namespace GameRes.Formats.Entis
|
||||
}
|
||||
}
|
||||
|
||||
static void eriFastILOT (float[] ptrDst, float[] ptrSrc1, int src1, float[] ptrSrc2, int nDegreeDCT)
|
||||
static void eriFastILOT (float[] ptrDst, float[] ptrSrc1, int src1, float[] ptrSrc2, int src2, int nDegreeDCT)
|
||||
{
|
||||
int nDegreeNum = 1 << nDegreeDCT;
|
||||
for (int i = 0; i < nDegreeNum; i += 2)
|
||||
{
|
||||
float r1 = ptrSrc1[src1 + i];
|
||||
float r2 = ptrSrc2[i + 1];
|
||||
float r2 = ptrSrc2[src2 + i + 1];
|
||||
ptrDst[i] = r1 + r2;
|
||||
ptrDst[i + 1] = r1 - r2;
|
||||
}
|
||||
@ -1107,7 +1500,7 @@ namespace GameRes.Formats.Entis
|
||||
}
|
||||
}
|
||||
|
||||
static void eriFastIDCT (float[] ptrDst, float[] ptrSrc, int nSrcInterval, float[] ptrWorkBuf, int nDegreeDCT)
|
||||
static void eriFastIDCT (float[] ptrDst, float[] srcBuf, int ptrSrc, int nSrcInterval, float[] ptrWorkBuf, int nDegreeDCT)
|
||||
{
|
||||
Debug.Assert ((nDegreeDCT >= MIN_DCT_DEGREE) && (nDegreeDCT <= MAX_DCT_DEGREE));
|
||||
|
||||
@ -1116,14 +1509,14 @@ namespace GameRes.Formats.Entis
|
||||
float[] r32Buf1 = new float[2];
|
||||
float[] r32Buf2 = new float[4];
|
||||
|
||||
r32Buf1[0] = ptrSrc[0];
|
||||
r32Buf1[1] = ERI_rCosPI4 * ptrSrc[nSrcInterval * 2];
|
||||
r32Buf1[0] = srcBuf[ptrSrc];
|
||||
r32Buf1[1] = ERI_rCosPI4 * srcBuf[ptrSrc + nSrcInterval * 2];
|
||||
|
||||
r32Buf2[0] = r32Buf1[0] + r32Buf1[1];
|
||||
r32Buf2[1] = r32Buf1[0] - r32Buf1[1];
|
||||
|
||||
r32Buf1[0] = ERI_DCTofK2[0] * ptrSrc[nSrcInterval];
|
||||
r32Buf1[1] = ERI_DCTofK2[1] * ptrSrc[nSrcInterval * 3];
|
||||
r32Buf1[0] = ERI_DCTofK2[0] * srcBuf[ptrSrc + nSrcInterval];
|
||||
r32Buf1[1] = ERI_DCTofK2[1] * srcBuf[ptrSrc + nSrcInterval * 3];
|
||||
|
||||
r32Buf2[2] = r32Buf1[0] + r32Buf1[1];
|
||||
r32Buf2[3] = ERI_r2CosPI4 * (r32Buf1[0] - r32Buf1[1]);
|
||||
@ -1137,20 +1530,19 @@ namespace GameRes.Formats.Entis
|
||||
}
|
||||
else
|
||||
{
|
||||
uint i;
|
||||
uint nDegreeNum = 1u << nDegreeDCT;
|
||||
uint nHalfDegree = nDegreeNum >> 1;
|
||||
int nSrcStep = nSrcInterval << 1;
|
||||
eriFastIDCT (ptrDst, ptrSrc, nSrcStep, ptrWorkBuf, nDegreeDCT - 1);
|
||||
eriFastIDCT (ptrDst, srcBuf, ptrSrc, nSrcStep, ptrWorkBuf, nDegreeDCT - 1);
|
||||
|
||||
float[] pDCTofK = ERI_pMatrixDCTofK[nDegreeDCT - 1];
|
||||
int pOddSrc = nSrcInterval; // within ptrSrc
|
||||
int pOddDst = (int)nHalfDegree; // within ptrDst
|
||||
int ptrNext = ptrSrc + nSrcInterval; // within srcBuf
|
||||
|
||||
int ptrNext = pOddSrc;
|
||||
uint i;
|
||||
for (i = 0; i < nHalfDegree; i++)
|
||||
{
|
||||
ptrWorkBuf[i] = ptrSrc[ptrNext] * pDCTofK[i];
|
||||
ptrWorkBuf[i] = srcBuf[ptrNext] * pDCTofK[i];
|
||||
ptrNext += nSrcStep;
|
||||
}
|
||||
|
||||
@ -1182,5 +1574,20 @@ namespace GameRes.Formats.Entis
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void eriRevolve2x2 (float[] buf1, int ptrBuf1, float[] buf2, int ptrBuf2, float rSin, float rCos, int nStep, int nCount)
|
||||
{
|
||||
for (int i = 0; i < nCount; i++)
|
||||
{
|
||||
float r1 = buf1[ptrBuf1];
|
||||
float r2 = buf2[ptrBuf2];
|
||||
|
||||
buf1[ptrBuf1] = r1 * rCos - r2 * rSin;
|
||||
buf2[ptrBuf2] = r1 * rSin + r2 * rCos;
|
||||
|
||||
ptrBuf1 += nStep;
|
||||
ptrBuf2 += nStep;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user