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chudov
178
MAC_SDK/Source/MACLib/Old/APEDecompressCore.cpp
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178
MAC_SDK/Source/MACLib/Old/APEDecompressCore.cpp
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#include "All.h"
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#ifdef BACKWARDS_COMPATIBILITY
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#include "UnMAC.h"
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#include "APEDecompressCore.h"
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#include "../APEInfo.h"
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#include "GlobalFunctions.h"
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#include "../UnBitArrayBase.h"
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#include "Anti-Predictor.h"
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#include "UnMAC.h"
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#include "../Prepare.h"
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#include "../UnBitArray.h"
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#include "../Assembly/Assembly.h"
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CAPEDecompressCore::CAPEDecompressCore(CIO * pIO, IAPEDecompress * pAPEDecompress)
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{
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m_pAPEDecompress = pAPEDecompress;
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// initialize the bit array
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m_pUnBitArray = CreateUnBitArray(pAPEDecompress, pAPEDecompress->GetInfo(APE_INFO_FILE_VERSION));
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if (m_pAPEDecompress->GetInfo(APE_INFO_FILE_VERSION) >= 3930)
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throw(0);
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m_pAntiPredictorX = CreateAntiPredictor(pAPEDecompress->GetInfo(APE_INFO_COMPRESSION_LEVEL), pAPEDecompress->GetInfo(APE_INFO_FILE_VERSION));
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m_pAntiPredictorY = CreateAntiPredictor(pAPEDecompress->GetInfo(APE_INFO_COMPRESSION_LEVEL), pAPEDecompress->GetInfo(APE_INFO_FILE_VERSION));
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m_pDataX = new int [pAPEDecompress->GetInfo(APE_INFO_BLOCKS_PER_FRAME) + 16];
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m_pDataY = new int [pAPEDecompress->GetInfo(APE_INFO_BLOCKS_PER_FRAME) + 16];
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m_pTempData = new int [pAPEDecompress->GetInfo(APE_INFO_BLOCKS_PER_FRAME) + 16];
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m_nBlocksProcessed = 0;
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// check to see if MMX is available
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m_bMMXAvailable = GetMMXAvailable();
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}
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CAPEDecompressCore::~CAPEDecompressCore()
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{
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SAFE_DELETE(m_pUnBitArray)
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SAFE_DELETE(m_pAntiPredictorX)
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SAFE_DELETE(m_pAntiPredictorY)
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SAFE_ARRAY_DELETE(m_pDataX)
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SAFE_ARRAY_DELETE(m_pDataY)
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SAFE_ARRAY_DELETE(m_pTempData)
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}
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void CAPEDecompressCore::GenerateDecodedArrays(int nBlocks, int nSpecialCodes, int nFrameIndex, int nCPULoadBalancingFactor)
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{
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CUnBitArray * pBitArray = (CUnBitArray *) m_pUnBitArray;
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if (m_pAPEDecompress->GetInfo(APE_INFO_CHANNELS) == 2)
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{
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if ((nSpecialCodes & SPECIAL_FRAME_LEFT_SILENCE) && (nSpecialCodes & SPECIAL_FRAME_RIGHT_SILENCE))
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{
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memset(m_pDataX, 0, nBlocks * 4);
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memset(m_pDataY, 0, nBlocks * 4);
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}
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else if (nSpecialCodes & SPECIAL_FRAME_PSEUDO_STEREO)
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{
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GenerateDecodedArray(m_pDataX, nBlocks, nFrameIndex, m_pAntiPredictorX, nCPULoadBalancingFactor);
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memset(m_pDataY, 0, nBlocks * 4);
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}
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else
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{
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GenerateDecodedArray(m_pDataX, nBlocks, nFrameIndex, m_pAntiPredictorX, nCPULoadBalancingFactor);
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GenerateDecodedArray(m_pDataY, nBlocks, nFrameIndex, m_pAntiPredictorY, nCPULoadBalancingFactor);
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}
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}
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else
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{
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if (nSpecialCodes & SPECIAL_FRAME_LEFT_SILENCE)
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{
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memset(m_pDataX, 0, nBlocks * 4);
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}
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else
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{
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GenerateDecodedArray(m_pDataX, nBlocks, nFrameIndex, m_pAntiPredictorX, nCPULoadBalancingFactor);
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}
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}
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}
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void CAPEDecompressCore::GenerateDecodedArray(int * Input_Array, uint32 Number_of_Elements, int Frame_Index, CAntiPredictor *pAntiPredictor, int CPULoadBalancingFactor)
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{
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const int nFrameBytes = m_pAPEDecompress->GetInfo(APE_INFO_FRAME_BYTES, Frame_Index);
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// run the prediction sequence
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switch (m_pAPEDecompress->GetInfo(APE_INFO_COMPRESSION_LEVEL))
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{
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#ifdef ENABLE_COMPRESSION_MODE_FAST
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case COMPRESSION_LEVEL_FAST:
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if (m_pAPEDecompress->GetInfo(APE_INFO_FILE_VERSION) < 3320)
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{
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m_pUnBitArray->GenerateArray(m_pTempData, Number_of_Elements, nFrameBytes);
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pAntiPredictor->AntiPredict(m_pTempData, Input_Array, Number_of_Elements);
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}
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else
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{
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m_pUnBitArray->GenerateArray(Input_Array, Number_of_Elements, nFrameBytes);
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pAntiPredictor->AntiPredict(Input_Array, NULL, Number_of_Elements);
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}
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break;
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#endif // #ifdef ENABLE_COMPRESSION_MODE_FAST
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#ifdef ENABLE_COMPRESSION_MODE_NORMAL
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case COMPRESSION_LEVEL_NORMAL:
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{
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// get the array from the bitstream
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m_pUnBitArray->GenerateArray(m_pTempData, Number_of_Elements, nFrameBytes);
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pAntiPredictor->AntiPredict(m_pTempData, Input_Array, Number_of_Elements);
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break;
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}
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#endif // #ifdef ENABLE_COMPRESSION_MODE_NORMAL
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#ifdef ENABLE_COMPRESSION_MODE_HIGH
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case COMPRESSION_LEVEL_HIGH:
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// get the array from the bitstream
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m_pUnBitArray->GenerateArray(m_pTempData, Number_of_Elements, nFrameBytes);
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pAntiPredictor->AntiPredict(m_pTempData, Input_Array, Number_of_Elements);
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break;
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#endif // #ifdef ENABLE_COMPRESSION_MODE_HIGH
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#ifdef ENABLE_COMPRESSION_MODE_EXTRA_HIGH
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case COMPRESSION_LEVEL_EXTRA_HIGH:
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unsigned int aryCoefficientsA[64], aryCoefficientsB[64], nNumberOfCoefficients;
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#define GET_COEFFICIENTS(NumberOfCoefficientsBits, ValueBits) \
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nNumberOfCoefficients = m_pUnBitArray->DecodeValue(DECODE_VALUE_METHOD_X_BITS, NumberOfCoefficientsBits); \
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for (unsigned int z = 0; z <= nNumberOfCoefficients; z++) \
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{ \
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aryCoefficientsA[z] = m_pUnBitArray->DecodeValue(DECODE_VALUE_METHOD_X_BITS, ValueBits); \
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aryCoefficientsB[z] = m_pUnBitArray->DecodeValue(DECODE_VALUE_METHOD_X_BITS, ValueBits); \
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} \
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if (m_pAPEDecompress->GetInfo(APE_INFO_FILE_VERSION) < 3320)
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{
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GET_COEFFICIENTS(4, 6)
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m_pUnBitArray->GenerateArray(m_pTempData, Number_of_Elements, nFrameBytes);
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((CAntiPredictorExtraHigh0000To3320 *) pAntiPredictor)->AntiPredict(m_pTempData, Input_Array, Number_of_Elements, nNumberOfCoefficients, &aryCoefficientsA[0], &aryCoefficientsB[0]);
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}
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else if (m_pAPEDecompress->GetInfo(APE_INFO_FILE_VERSION) < 3600)
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{
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GET_COEFFICIENTS(3, 5)
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m_pUnBitArray->GenerateArray(m_pTempData, Number_of_Elements, nFrameBytes);
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((CAntiPredictorExtraHigh3320To3600 *) pAntiPredictor)->AntiPredict(m_pTempData, Input_Array, Number_of_Elements, nNumberOfCoefficients, &aryCoefficientsA[0], &aryCoefficientsB[0]);
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}
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else if (m_pAPEDecompress->GetInfo(APE_INFO_FILE_VERSION) < 3700)
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{
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GET_COEFFICIENTS(3, 6)
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m_pUnBitArray->GenerateArray(m_pTempData, Number_of_Elements, nFrameBytes);
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((CAntiPredictorExtraHigh3600To3700 *) pAntiPredictor)->AntiPredict(m_pTempData, Input_Array, Number_of_Elements, nNumberOfCoefficients, &aryCoefficientsA[0], &aryCoefficientsB[0]);
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}
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else if (m_pAPEDecompress->GetInfo(APE_INFO_FILE_VERSION) < 3800)
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{
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GET_COEFFICIENTS(3, 6)
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m_pUnBitArray->GenerateArray(m_pTempData, Number_of_Elements, nFrameBytes);
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((CAntiPredictorExtraHigh3700To3800 *) pAntiPredictor)->AntiPredict(m_pTempData, Input_Array, Number_of_Elements, nNumberOfCoefficients, &aryCoefficientsA[0], &aryCoefficientsB[0]);
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}
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else
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{
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m_pUnBitArray->GenerateArray(m_pTempData, Number_of_Elements, nFrameBytes);
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((CAntiPredictorExtraHigh3800ToCurrent *) pAntiPredictor)->AntiPredict(m_pTempData, Input_Array, Number_of_Elements, m_bMMXAvailable, CPULoadBalancingFactor, m_pAPEDecompress->GetInfo(APE_INFO_FILE_VERSION));
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}
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break;
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#endif // #ifdef ENABLE_COMPRESSION_MODE_EXTRA_HIGH
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}
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}
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#endif // #ifdef BACKWARDS_COMPATIBILITY
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