Initial creation

1 files changed, 358 insertions, 0 deletions

diff --git a/src/adpcm/adpcm_old.cpp b/src/adpcm/adpcm_old.cpp
new file mode 100644
index 0000000..916fa38
--- /dev/null
+++ b/src/adpcm/adpcm_old.cpp
@@ -0,0 +1,358 @@
+/*****************************************************************************/
+/* adpcm.cpp                              Copyright (c) Ladislav Zezula 2003 */
+/*---------------------------------------------------------------------------*/
+/* This module contains implementation of adpcm decompression method used by */
+/* Storm.dll to decompress WAVE files. Thanks to Tom Amigo for releasing     */
+/* his sources.                                                              */
+/*---------------------------------------------------------------------------*/
+/*   Date    Ver   Who  Comment                                              */
+/* --------  ----  ---  -------                                              */
+/* 11.03.03  1.00  Lad  Splitted from Pkware.cpp                             */
+/* 20.05.03  2.00  Lad  Added compression                                    */
+/* 19.11.03  2.01  Dan  Big endian handling                                  */
+/*****************************************************************************/
+
+#include "adpcm.h"
+
+//------------------------------------------------------------------------------
+// Structures
+
+typedef union _BYTE_AND_WORD_PTR
+{
+    short * pw;
+    unsigned char * pb;
+} BYTE_AND_WORD_PTR;
+
+typedef union _WORD_AND_BYTE_ARRAY
+{
+    short w;
+    unsigned char b[2];
+} WORD_AND_BYTE_ARRAY;
+
+//-----------------------------------------------------------------------------
+// Tables necessary dor decompression
+
+static long Table1503F120[] =
+{
+    0xFFFFFFFF, 0x00000000, 0xFFFFFFFF, 0x00000004, 0xFFFFFFFF, 0x00000002, 0xFFFFFFFF, 0x00000006,
+    0xFFFFFFFF, 0x00000001, 0xFFFFFFFF, 0x00000005, 0xFFFFFFFF, 0x00000003, 0xFFFFFFFF, 0x00000007,
+    0xFFFFFFFF, 0x00000001, 0xFFFFFFFF, 0x00000005, 0xFFFFFFFF, 0x00000003, 0xFFFFFFFF, 0x00000007,  
+    0xFFFFFFFF, 0x00000002, 0xFFFFFFFF, 0x00000004, 0xFFFFFFFF, 0x00000006, 0xFFFFFFFF, 0x00000008  
+};
+
+static long step_table[] =
+{
+    0x00000007, 0x00000008, 0x00000009, 0x0000000A, 0x0000000B, 0x0000000C, 0x0000000D, 0x0000000E,
+    0x00000010, 0x00000011, 0x00000013, 0x00000015, 0x00000017, 0x00000019, 0x0000001C, 0x0000001F,
+    0x00000022, 0x00000025, 0x00000029, 0x0000002D, 0x00000032, 0x00000037, 0x0000003C, 0x00000042,
+    0x00000049, 0x00000050, 0x00000058, 0x00000061, 0x0000006B, 0x00000076, 0x00000082, 0x0000008F,
+    0x0000009D, 0x000000AD, 0x000000BE, 0x000000D1, 0x000000E6, 0x000000FD, 0x00000117, 0x00000133,
+    0x00000151, 0x00000173, 0x00000198, 0x000001C1, 0x000001EE, 0x00000220, 0x00000256, 0x00000292,
+    0x000002D4, 0x0000031C, 0x0000036C, 0x000003C3, 0x00000424, 0x0000048E, 0x00000502, 0x00000583,
+    0x00000610, 0x000006AB, 0x00000756, 0x00000812, 0x000008E0, 0x000009C3, 0x00000ABD, 0x00000BD0,
+    0x00000CFF, 0x00000E4C, 0x00000FBA, 0x0000114C, 0x00001307, 0x000014EE, 0x00001706, 0x00001954,
+    0x00001BDC, 0x00001EA5, 0x000021B6, 0x00002515, 0x000028CA, 0x00002CDF, 0x0000315B, 0x0000364B,
+    0x00003BB9, 0x000041B2, 0x00004844, 0x00004F7E, 0x00005771, 0x0000602F, 0x000069CE, 0x00007462,
+    0x00007FFF
+};
+
+//----------------------------------------------------------------------------
+// CompressWave
+
+// 1500EF70
+int CompressADPCM(unsigned char * pbOutBuffer, int dwOutLength, short * pwInBuffer, int dwInLength, int nChannels, int nCmpLevel)
+//                ECX                          EDX
+{
+    WORD_AND_BYTE_ARRAY Wcmp;
+    BYTE_AND_WORD_PTR out;                    // Pointer to the output buffer
+    long SInt32Array1[2];
+    long SInt32Array2[2];
+    long SInt32Array3[2];
+    long nBytesRemains = dwOutLength;       // Number of bytes remaining
+    long nWordsRemains;                     // Number of words remaining
+//  unsigned char * pbSaveOutBuffer;        // Copy of output buffer (actually not used)
+    unsigned long dwBitBuff;
+    unsigned long dwStopBit;
+    unsigned long dwBit;
+    unsigned long ebx;
+    unsigned long esi;
+    long nTableValue;
+    long nOneWord;
+    long var_1C;
+    long var_2C;
+    int nLength;
+    int nIndex;
+    int nValue;
+    int i, chnl;
+
+    // If less than 2 bytes remain, don't decompress anything
+//  pbSaveOutBuffer = pbOutBuffer;
+    out.pb = pbOutBuffer;
+    if(nBytesRemains < 2)
+        return 2;
+
+    Wcmp.b[1] = (unsigned char)(nCmpLevel - 1);
+    Wcmp.b[0] = (unsigned char)0;
+
+    *out.pw++ = BSWAP_INT16_SIGNED(Wcmp.w);
+    if((out.pb - pbOutBuffer + (nChannels * 2)) > nBytesRemains)
+        return (int)(out.pb - pbOutBuffer + (nChannels * 2));
+
+    SInt32Array1[0] = SInt32Array1[1] = 0x2C;
+
+    for(i = 0; i < nChannels; i++)
+    {
+        nOneWord = BSWAP_INT16_SIGNED(*pwInBuffer++);
+        *out.pw++ = BSWAP_INT16_SIGNED((short)nOneWord);
+        SInt32Array2[i] = nOneWord;
+    }
+
+    // Weird. But it's there
+    nLength = dwInLength;
+    if(nLength < 0)                     // mov eax, dwInLength; cdq; sub eax, edx;
+        nLength++;
+
+    nLength = (nLength / 2) - (int)(out.pb - pbOutBuffer);
+    nLength = (nLength < 0) ? 0 : nLength;
+    
+    nIndex  = nChannels - 1;            // edi
+    nWordsRemains = dwInLength / 2;     // eax
+    
+    // ebx - nChannels
+    // ecx - pwOutPos
+    for(chnl = nChannels; chnl < nWordsRemains; chnl++)
+    {
+        // 1500F030
+        if((out.pb - pbOutBuffer + 2) > nBytesRemains)
+            return (int)(out.pb - pbOutBuffer + 2);
+
+        // Switch index
+        if(nChannels == 2)
+            nIndex = (nIndex == 0) ? 1 : 0;
+
+        // Load one word from the input stream
+        nOneWord = BSWAP_INT16_SIGNED(*pwInBuffer++);   // ecx - nOneWord
+        SInt32Array3[nIndex] = nOneWord;
+
+        // esi - SInt32Array2[nIndex]
+        // eax - nValue
+        nValue = nOneWord - SInt32Array2[nIndex];
+        nValue = (nValue < 0) ? ((nValue ^ 0xFFFFFFFF) + 1) : nValue;
+
+        ebx = (nOneWord >= SInt32Array2[nIndex]) ? 0 : 0x40;
+
+        // esi - SInt32Array2[nIndex]
+        // edx - step_table[SInt32Array2[nIndex]]
+        // edi - (step_table[SInt32Array1[nIndex]] >> nCmpLevel)
+        nTableValue = step_table[SInt32Array1[nIndex]];
+        dwStopBit = (unsigned long)nCmpLevel;
+
+        // edi - nIndex;
+        if(nValue < (nTableValue >> nCmpLevel))
+        {
+            if(SInt32Array1[nIndex] != 0)
+                SInt32Array1[nIndex]--;
+            *out.pb++ = 0x80;
+        }
+        else
+        {
+            while(nValue > nTableValue * 2)
+            {
+                if(SInt32Array1[nIndex] >= 0x58 || nLength == 0)
+                    break;
+
+                SInt32Array1[nIndex] += 8;
+                if(SInt32Array1[nIndex] > 0x58)
+                    SInt32Array1[nIndex] = 0x58;
+
+                nTableValue = step_table[SInt32Array1[nIndex]];
+                *out.pb++ = 0x81;
+                nLength--;
+            }
+
+            var_2C = nTableValue >> Wcmp.b[1];
+            dwBitBuff = 0;
+
+            esi = (1 << (dwStopBit - 2));
+            dwStopBit = (esi <= 0x20) ? esi : 0x20;
+
+            for(var_1C = 0, dwBit = 1; ; dwBit <<= 1)
+            {
+//              esi = var_1C + nTableValue;
+                if((var_1C + nTableValue) <= nValue)
+                {
+                    var_1C += nTableValue;
+                    dwBitBuff |= dwBit;
+                }
+                if(dwBit == dwStopBit)
+                    break;
+               
+                nTableValue >>= 1;
+            }
+
+            nValue = SInt32Array2[nIndex];
+            if(ebx != 0)
+            {
+                nValue -= (var_1C + var_2C);
+                if(nValue < -32768)
+                    nValue = -32768;
+            }
+            else
+            {
+                nValue += (var_1C + var_2C);
+                if(nValue > 32767)
+                    nValue = 32767;
+            }
+
+            SInt32Array2[nIndex]  = nValue;
+            *out.pb++ = (unsigned char)(dwBitBuff | ebx);
+            nTableValue = Table1503F120[dwBitBuff & 0x1F];
+            SInt32Array1[nIndex]  = SInt32Array1[nIndex] + nTableValue; 
+            if(SInt32Array1[nIndex] < 0)
+                SInt32Array1[nIndex] = 0;
+            else if(SInt32Array1[nIndex] > 0x58)
+                SInt32Array1[nIndex] = 0x58;
+        }
+    }
+
+    return (int)(out.pb - pbOutBuffer);
+}
+
+//----------------------------------------------------------------------------
+// DecompressADPCM
+
+// 1500F230
+int DecompressADPCM(unsigned char * pbOutBuffer, int dwOutLength, unsigned char * pbInBuffer, int dwInLength, int nChannels)
+{
+    BYTE_AND_WORD_PTR out;                // Output buffer
+    BYTE_AND_WORD_PTR in;
+    unsigned char * pbInBufferEnd = (pbInBuffer + dwInLength);
+    long SInt32Array1[2];
+    long SInt32Array2[2];
+    long nOneWord;
+    int nIndex;
+    int i;
+
+    SInt32Array1[0] = SInt32Array1[1] = 0x2C;
+    out.pb = pbOutBuffer;
+    in.pb = pbInBuffer;
+    in.pw++;
+
+    // Fill the Uint32Array2 array by channel values.
+    for(i = 0; i < nChannels; i++)
+    {
+        nOneWord = BSWAP_INT16_SIGNED(*in.pw++);
+        SInt32Array2[i] = nOneWord;
+        if(dwOutLength < 2)
+            return (int)(out.pb - pbOutBuffer);
+
+        *out.pw++ = BSWAP_INT16_SIGNED((short)nOneWord);
+        dwOutLength -= sizeof(short);
+    }
+
+    // Get the initial index
+    nIndex = nChannels - 1;
+
+    // Perform the decompression
+    while(in.pb < pbInBufferEnd)
+    {
+        unsigned char nOneByte = *in.pb++;
+
+        // Switch index
+        if(nChannels == 2)
+            nIndex = (nIndex == 0) ? 1 : 0;
+
+        // 1500F2A2: Get one byte from input buffer
+        if(nOneByte & 0x80)
+        {
+            switch(nOneByte & 0x7F)
+            {
+                case 0:     // 1500F315
+                    if(SInt32Array1[nIndex] != 0)
+                        SInt32Array1[nIndex]--;
+
+                    if(dwOutLength < 2)
+                        return (int)(out.pb - pbOutBuffer);
+
+                    *out.pw++ = BSWAP_INT16_SIGNED((unsigned short)SInt32Array2[nIndex]);
+                    dwOutLength -= sizeof(unsigned short);
+                    break;
+
+                case 1:     // 1500F2E8
+                    SInt32Array1[nIndex] += 8;
+                    if(SInt32Array1[nIndex] > 0x58)
+                        SInt32Array1[nIndex] = 0x58;
+                    
+                    if(nChannels == 2)
+                        nIndex = (nIndex == 0) ? 1 : 0;
+                    break;
+
+                case 2:     // 1500F41E
+                    break;
+
+                default:    // 1500F2C4
+                    SInt32Array1[nIndex] -= 8;
+                    if(SInt32Array1[nIndex] < 0)
+                        SInt32Array1[nIndex] = 0;
+
+                    if(nChannels == 2)
+                        nIndex = (nIndex == 0) ? 1 : 0;
+                    break;
+            }
+        }
+        else
+        {
+            // 1500F349
+            long temp1 = step_table[SInt32Array1[nIndex]];     // EDI
+            long temp2 = temp1 >> pbInBuffer[1];               // ESI
+            long temp3 = SInt32Array2[nIndex];                 // ECX
+
+            if(nOneByte & 0x01)          // EBX = nOneByte
+                temp2 += (temp1 >> 0);
+
+            if(nOneByte & 0x02)
+                temp2 += (temp1 >> 1);
+
+            if(nOneByte & 0x04)
+                temp2 += (temp1 >> 2);
+
+            if(nOneByte & 0x08)
+                temp2 += (temp1 >> 3);
+
+            if(nOneByte & 0x10)
+                temp2 += (temp1 >> 4);
+
+            if(nOneByte & 0x20)
+                temp2 += (temp1 >> 5);
+
+            if(nOneByte & 0x40)
+            {
+                temp3 = temp3 - temp2;
+                if(temp3 <= -32768)
+                    temp3 = -32768;
+            }
+            else
+            {
+                temp3 = temp3 + temp2;
+                if(temp3 >= 32767)
+                    temp3 = 32767;
+            }
+
+            SInt32Array2[nIndex] = temp3;
+            if(dwOutLength < 2)
+                break;
+
+            // Store the output 16-bit value
+            *out.pw++ = BSWAP_INT16_SIGNED((short)SInt32Array2[nIndex]);
+            dwOutLength -= 2;
+
+            SInt32Array1[nIndex] += Table1503F120[nOneByte & 0x1F];
+
+            if(SInt32Array1[nIndex] < 0)
+                SInt32Array1[nIndex] = 0;
+            else if(SInt32Array1[nIndex] > 0x58)
+                SInt32Array1[nIndex] = 0x58;
+        }
+    }
+    return (int)(out.pb - pbOutBuffer);
+}