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//==========================================================================;
//
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY
// KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR
// PURPOSE.
//
// Copyright (c) 1993-1999 Microsoft Corporation
//
//--------------------------------------------------------------------------;
//
// g711.c
//
// Description:
// This file contains encode and decode routines for
// CCITT Rec. G.711 (A-law and u-law).
//
//==========================================================================;
#include <windows.h>
#include <windowsx.h>
#include <mmsystem.h>
#include <mmreg.h>
#include <msacm.h>
#include <msacmdrv.h>
#include "codec.h"
#include "g711.h"
#include "debug.h"
typedef BYTE HUGE *HPBYTE;typedef WORD HUGE *HPWORD;
//
//
//
extern const SHORT BCODE AlawToPcmTable[256];extern const SHORT BCODE UlawToPcmTable[256];extern const BYTE BCODE AlawToUlawTable[256];extern const BYTE BCODE UlawToAlawTable[256];
//==========================================================================;
//
//
//
//
//==========================================================================;
//--------------------------------------------------------------------------;
//
// LRESULT FNGLOBAL AlawToUlaw
//
// Description:
// This function handles the ACMDM_STREAM_CONVERT message when
// converting from A-law to u-law. This is the whole purpose
// of writing an ACM driver--to convert data. This message
// is sent after a stream has been opened (the driver receives and
// succeeds the ACMDM_STREAM_OPEN message).
//
// Arguments:
// LPACMDRVSTREAMINSTANCE padsi: Pointer to instance data for the
// conversion stream. This structure was allocated by the ACM and
// filled with the most common instance data needed for conversions.
// The information in this structure is exactly the same as it was
// during the ACMDM_STREAM_OPEN message--so it is not necessary
// to re-verify the information referenced by this structure.
//
// LPACMDRVSTREAMHEADER padsh: Pointer to stream header structure
// that defines the source data and destination buffer to convert.
//
// Return (LRESULT):
// The return value is zero (MMSYSERR_NOERROR) if this function
// succeeds with no errors. The return value is a non-zero error code
// if the function fails.
//
//
// History:
// 08/01/93 Created.
//
//--------------------------------------------------------------------------;
LRESULT FNGLOBAL AlawToUlaw( LPACMDRVSTREAMINSTANCE padsi, LPACMDRVSTREAMHEADER padsh){ HPBYTE hpbSrc, hpbDst; DWORD cb; DWORD i; PSTREAMINSTANCE psi;
psi = (PSTREAMINSTANCE)padsi->dwDriver;
cb = padsh->cbSrcLength; cb = G711_BYTESTOSAMPLES(padsi->pwfxSrc, cb); cb = G711_SAMPLESTOBYTES(padsi->pwfxSrc, cb); padsh->cbSrcLengthUsed = cb;
if (cb > padsh->cbDstLength) return (ACMERR_NOTPOSSIBLE);
hpbSrc = (HPBYTE) padsh->pbSrc; hpbDst = (HPBYTE) padsh->pbDst; for (i=cb; i>0; i--) *(hpbDst++) = AlawToUlawTable[*(hpbSrc++)]; //
// because the actual length of the converted data may not be the
// exact same amount as the estimate we gave in codecQueryBufferSize,
// we need to fill in the actual length we used for the destination
// buffer.
//
padsh->cbDstLengthUsed = cb;
return (MMSYSERR_NOERROR); } // AlawToUlaw()
//--------------------------------------------------------------------------;
//
// LRESULT FNGLOBAL UlawToAlaw
//
// Description:
// This function handles the ACMDM_STREAM_CONVERT message when
// converting from u-law to A-law. This is the whole purpose
// of writing an ACM driver--to convert data. This message
// is sent after a stream has been opened (the driver receives and
// succeeds the ACMDM_STREAM_OPEN message).
//
// Arguments:
// LPACMDRVSTREAMINSTANCE padsi: Pointer to instance data for the
// conversion stream. This structure was allocated by the ACM and
// filled with the most common instance data needed for conversions.
// The information in this structure is exactly the same as it was
// during the ACMDM_STREAM_OPEN message--so it is not necessary
// to re-verify the information referenced by this structure.
//
// LPACMDRVSTREAMHEADER padsh: Pointer to stream header structure
// that defines the source data and destination buffer to convert.
//
// Return (LRESULT):
// The return value is zero (MMSYSERR_NOERROR) if this function
// succeeds with no errors. The return value is a non-zero error code
// if the function fails.
//
//
// History:
// 08/01/93 Created.
//
//--------------------------------------------------------------------------;
LRESULT FNGLOBAL UlawToAlaw( LPACMDRVSTREAMINSTANCE padsi, LPACMDRVSTREAMHEADER padsh){ HPBYTE hpbSrc, hpbDst; DWORD cb; DWORD i; PSTREAMINSTANCE psi;
psi = (PSTREAMINSTANCE)padsi->dwDriver;
cb = padsh->cbSrcLength; cb = G711_BYTESTOSAMPLES(padsi->pwfxSrc, cb); cb = G711_SAMPLESTOBYTES(padsi->pwfxSrc, cb); padsh->cbSrcLengthUsed = cb; if (cb > padsh->cbDstLength) return (ACMERR_NOTPOSSIBLE);
hpbSrc = (HPBYTE) padsh->pbSrc; hpbDst = (HPBYTE) padsh->pbDst; for (i=cb; i>0; i--) *(hpbDst++) = UlawToAlawTable[*(hpbSrc++)];
//
// because the actual length of the converted data may not be the
// exact same amount as the estimate we gave in codecQueryBufferSize,
// we need to fill in the actual length we used for the destination
// buffer.
//
padsh->cbDstLengthUsed = cb; return (MMSYSERR_NOERROR); } // UlawToAlaw()
//--------------------------------------------------------------------------;
//
// LRESULT FNGLOBAL AlawToPcm
//
// Description:
// This function handles the ACMDM_STREAM_CONVERT message when
// converting from A-law to PCM. This is the whole purpose
// of writing an ACM driver--to convert data. This message
// is sent after a stream has been opened (the driver receives and
// succeeds the ACMDM_STREAM_OPEN message).
//
// Arguments:
// LPACMDRVSTREAMINSTANCE padsi: Pointer to instance data for the
// conversion stream. This structure was allocated by the ACM and
// filled with the most common instance data needed for conversions.
// The information in this structure is exactly the same as it was
// during the ACMDM_STREAM_OPEN message--so it is not necessary
// to re-verify the information referenced by this structure.
//
// LPACMDRVSTREAMHEADER padsh: Pointer to stream header structure
// that defines the source data and destination buffer to convert.
//
// Return (LRESULT):
// The return value is zero (MMSYSERR_NOERROR) if this function
// succeeds with no errors. The return value is a non-zero error code
// if the function fails.
//
//
// History:
// 07/28/93 Created.
//
//--------------------------------------------------------------------------;
LRESULT FNGLOBAL AlawToPcm( LPACMDRVSTREAMINSTANCE padsi, LPACMDRVSTREAMHEADER padsh){ HPWORD hpwDst; HPBYTE hpbSrc; DWORD cb; DWORD cSamples; DWORD i; PSTREAMINSTANCE psi;
psi = (PSTREAMINSTANCE)padsi->dwDriver;
cb = padsh->cbSrcLength; cSamples = G711_BYTESTOSAMPLES(padsi->pwfxSrc, cb); cb = PCM_SAMPLESTOBYTES((LPPCMWAVEFORMAT)padsi->pwfxDst, cSamples); if (cb > padsh->cbDstLength) return (ACMERR_NOTPOSSIBLE); cb = G711_SAMPLESTOBYTES(padsi->pwfxSrc, cSamples); padsh->cbSrcLengthUsed = cb;
hpbSrc = (HPBYTE) padsh->pbSrc; hpwDst = (HPWORD) padsh->pbDst; for ( i=cb; i>0; i--) *(hpwDst++) = AlawToPcmTable[*(hpbSrc++)];
//
// because the actual length of the converted data may not be the
// exact same amount as the estimate we gave in codecQueryBufferSize,
// we need to fill in the actual length we used for the destination
// buffer.
//
padsh->cbDstLengthUsed = (DWORD)(((HPBYTE)hpwDst) - (HPBYTE)padsh->pbDst);
return (MMSYSERR_NOERROR);
} // AlawToPcm()
//--------------------------------------------------------------------------;
//
// LRESULT FNGLOBAL PcmToAlaw
//
// Description:
// This function handles the ACMDM_STREAM_CONVERT message when
// converting from PCM to A-law. This is the whole purpose
// of writing an ACM driver--to convert data. This message
// is sent after a stream has been opened (the driver receives and
// succeeds the ACMDM_STREAM_OPEN message).
//
// Arguments:
// LPACMDRVSTREAMINSTANCE padsi: Pointer to instance data for the
// conversion stream. This structure was allocated by the ACM and
// filled with the most common instance data needed for conversions.
// The information in this structure is exactly the same as it was
// during the ACMDM_STREAM_OPEN message--so it is not necessary
// to re-verify the information referenced by this structure.
//
// LPACMDRVSTREAMHEADER padsh: Pointer to stream header structure
// that defines the source data and destination buffer to convert.
//
// Return (LRESULT):
// The return value is zero (MMSYSERR_NOERROR) if this function
// succeeds with no errors. The return value is a non-zero error code
// if the function fails.
//
//
// History:
// 07/28/93 Created.
//
//--------------------------------------------------------------------------;
LRESULT FNGLOBAL PcmToAlaw( LPACMDRVSTREAMINSTANCE padsi, LPACMDRVSTREAMHEADER padsh){ HPBYTE hpbDst; HPWORD hpwSrc; DWORD cb; DWORD cSamples; DWORD i; signed short int wSample; BYTE alaw; PSTREAMINSTANCE psi;
psi = (PSTREAMINSTANCE)padsi->dwDriver;
cb = padsh->cbSrcLength; cSamples = PCM_BYTESTOSAMPLES((LPPCMWAVEFORMAT)padsi->pwfxSrc, cb); cb = G711_SAMPLESTOBYTES(padsi->pwfxDst, cSamples); if (cb > padsh->cbDstLength) return (ACMERR_NOTPOSSIBLE);
cb = PCM_SAMPLESTOBYTES((LPPCMWAVEFORMAT)padsi->pwfxSrc, cSamples); padsh->cbSrcLengthUsed = cb;
// hpwSrc, hpdDst will walk thru src and dst buffers
hpbDst = (HPBYTE) padsh->pbDst; hpwSrc = (HPWORD) padsh->pbSrc; //
//
// Compression from 16-bit PCM
//
//
// Walk thru the source buffer. Since the source buffer has 16-bit PCM we
// need to convert cb/2 samples.
for (i=cb/2; i>0; i--) { // Get a signed 16-bit PCM sample from the src buffer
wSample = (signed short int) *(hpwSrc++); // We'll init our A-law value per the sign of the PCM sample. A-law
// characters have the MSB=1 for positive PCM data. Also, we'll
// convert our signed 16-bit PCM value to it's absolute value and
// then work on that to get the rest of the A-law character bits.
if (wSample < 0) { alaw = 0x00; wSample = -wSample; if (wSample < 0) wSample = 0x7FFF; } else { alaw = 0x80; } // Now we test the PCM sample amplitude and create the A-law character.
// Study the CCITT A-law for more detail.
if (wSample >= 2048) // 2048 <= wSample < 32768
{ if (wSample >= 8192) // 8192 <= wSample < 32768
{ if (wSample >= 16384) // 16384 <= wSample < 32768
{ alaw |= 0x70 | ((wSample >> 10) & 0x0F); } else // 8192 <= wSample < 16384
{ alaw |= 0x60 | ((wSample >> 9) & 0x0F); } } else // 2048 <= wSample < 8192
{ if (wSample >= 4096) // 4096 <= wSample < 8192
{ alaw |= 0x50 | ((wSample >> 8) & 0x0F); } else // 2048 <= wSample < 4096
{ alaw |= 0x40 | ((wSample >> 7) & 0x0F); } } } else // 0 <= wSample < 2048
{ if (wSample >= 512) // 512 <= wSample < 2048
{ if (wSample >= 1024) // 1024 <= wSample < 2048
{ alaw |= 0x30 | ((wSample >> 6) & 0x0F); } else // 512 <= wSample < 1024
{ alaw |= 0x20 | ((wSample >> 5) & 0x0F); } } else // 0 <= wSample < 512
{ alaw |= 0x00 | ((wSample >> 4) & 0x1F); } } *(hpbDst++) = alaw ^ 0x55; // Invert even bits
} // end for
//
// because the actual length of the converted data may not be the
// exact same amount as the estimate we gave in codecQueryBufferSize,
// we need to fill in the actual length we used for the destination
// buffer.
//
padsh->cbDstLengthUsed = (DWORD)(hpbDst - (HPBYTE)padsh->pbDst);
return (MMSYSERR_NOERROR); } // PcmToAlaw()
//--------------------------------------------------------------------------;
//
// LRESULT FNGLOBAL UlawToPcm
//
// Description:
// This function handles the ACMDM_STREAM_CONVERT message when
// converting from u-law to PCM. This is the whole purpose
// of writing an ACM driver--to convert data. This message
// is sent after a stream has been opened (the driver receives and
// succeeds the ACMDM_STREAM_OPEN message).
//
// Arguments:
// LPACMDRVSTREAMINSTANCE padsi: Pointer to instance data for the
// conversion stream. This structure was allocated by the ACM and
// filled with the most common instance data needed for conversions.
// The information in this structure is exactly the same as it was
// during the ACMDM_STREAM_OPEN message--so it is not necessary
// to re-verify the information referenced by this structure.
//
// LPACMDRVSTREAMHEADER padsh: Pointer to stream header structure
// that defines the source data and destination buffer to convert.
//
// Return (LRESULT):
// The return value is zero (MMSYSERR_NOERROR) if this function
// succeeds with no errors. The return value is a non-zero error code
// if the function fails.
//
//
// History:
// 08/01/93 Created.
//
//--------------------------------------------------------------------------;
LRESULT FNGLOBAL UlawToPcm( LPACMDRVSTREAMINSTANCE padsi, LPACMDRVSTREAMHEADER padsh){ HPBYTE hpbSrc; HPWORD hpwDst; DWORD cb; DWORD cSamples; DWORD i; PSTREAMINSTANCE psi;
psi = (PSTREAMINSTANCE)padsi->dwDriver;
cb = padsh->cbSrcLength; cSamples = G711_BYTESTOSAMPLES(padsi->pwfxSrc, cb); cb = PCM_SAMPLESTOBYTES((LPPCMWAVEFORMAT)padsi->pwfxDst, cSamples); if (cb > padsh->cbDstLength) return (ACMERR_NOTPOSSIBLE);
cb = G711_SAMPLESTOBYTES(padsi->pwfxSrc, cSamples); padsh->cbSrcLengthUsed = cb;
hpbSrc = (HPBYTE) padsh->pbSrc; hpwDst = (HPWORD) padsh->pbDst; for ( i=cb; i>0; i--) *(hpwDst++) = UlawToPcmTable[*(hpbSrc++)];
//
// because the actual length of the converted data may not be the
// exact same amount as the estimate we gave in codecQueryBufferSize,
// we need to fill in the actual length we used for the destination
// buffer.
//
padsh->cbDstLengthUsed = (DWORD)(((HPBYTE)hpwDst) - (HPBYTE)padsh->pbDst);
return (MMSYSERR_NOERROR);
} // UlawToPcm()
//--------------------------------------------------------------------------;
//
// LRESULT FNGLOBAL PcmToUlaw
//
// Description:
// This function handles the ACMDM_STREAM_CONVERT message when
// converting from PCM to u-law. This is the whole purpose
// of writing an ACM driver--to convert data. This message
// is sent after a stream has been opened (the driver receives and
// succeeds the ACMDM_STREAM_OPEN message).
//
// Arguments:
// LPACMDRVSTREAMINSTANCE padsi: Pointer to instance data for the
// conversion stream. This structure was allocated by the ACM and
// filled with the most common instance data needed for conversions.
// The information in this structure is exactly the same as it was
// during the ACMDM_STREAM_OPEN message--so it is not necessary
// to re-verify the information referenced by this structure.
//
// LPACMDRVSTREAMHEADER padsh: Pointer to stream header structure
// that defines the source data and destination buffer to convert.
//
// Return (LRESULT):
// The return value is zero (MMSYSERR_NOERROR) if this function
// succeeds with no errors. The return value is a non-zero error code
// if the function fails.
//
//
// History:
// 08/01/93 Created.
//
//--------------------------------------------------------------------------;
LRESULT FNGLOBAL PcmToUlaw( LPACMDRVSTREAMINSTANCE padsi, LPACMDRVSTREAMHEADER padsh){
HPWORD hpwSrc; HPBYTE hpbDst; DWORD cb; DWORD cSamples; DWORD i; signed short int wSample; BYTE ulaw; PSTREAMINSTANCE psi; psi = (PSTREAMINSTANCE)padsi->dwDriver;
//
// For now we are using a straight-forward/brute-force method
// for converting from 16-bit PCM to u-law. This can probably
// be made more efficient if some thought is put into it...
//
cb = padsh->cbSrcLength; cSamples = PCM_BYTESTOSAMPLES((LPPCMWAVEFORMAT)padsi->pwfxSrc, cb); cb = G711_SAMPLESTOBYTES(padsi->pwfxDst, cSamples); if (cb > padsh->cbDstLength) return (ACMERR_NOTPOSSIBLE); cb = PCM_SAMPLESTOBYTES((LPPCMWAVEFORMAT)padsi->pwfxSrc, cSamples); padsh->cbSrcLengthUsed = cb;
// hpwSrc and hpbDst will walk thru the src and dst buffers
hpwSrc = (HPWORD) padsh->pbSrc; hpbDst = (HPBYTE) padsh->pbDst; //
//
// Handle compression from 16-bit PCM
//
//
// Walk thru the source buffer. Since the source buffer has 16-bit PCM we
// need to convert cb/2 samples.
for (i=cb/2; i>0; i--) { // Get a signed 16-bit PCM sample from the src buffer
wSample = (signed short int) *(hpwSrc++); // We'll init our u-law value per the sign of the PCM sample. u-law
// characters have the MSB=1 for positive PCM data. Also, we'll
// convert our signed 16-bit PCM value to it's absolute value and
// then work on that to get the rest of the u-law character bits.
if (wSample < 0) { ulaw = 0x00; wSample = -wSample; if (wSample < 0) wSample = 0x7FFF; } else { ulaw = 0x80; } // For now, let's shift this 16-bit value
// so that it is within the range defined
// by CCITT u-law.
wSample = wSample >> 2; // Now we test the PCM sample amplitude and create the u-law character.
// Study the CCITT u-law for more details.
if (wSample >= 8159) goto Gotulaw; if (wSample >= 4063) { ulaw |= 0x00 + 15-((wSample-4063)/256); goto Gotulaw; } if (wSample >= 2015) { ulaw |= 0x10 + 15-((wSample-2015)/128); goto Gotulaw; } if (wSample >= 991) { ulaw |= 0x20 + 15-((wSample-991)/64); goto Gotulaw; } if (wSample >= 479) { ulaw |= 0x30 + 15-((wSample-479)/32); goto Gotulaw; } if (wSample >= 223) { ulaw |= 0x40 + 15-((wSample-223)/16); goto Gotulaw; } if (wSample >= 95) { ulaw |= 0x50 + 15-((wSample-95)/8); goto Gotulaw; } if (wSample >= 31) { ulaw |= 0x60 + 15-((wSample-31)/4); goto Gotulaw; } ulaw |= 0x70 + 15-((wSample)/2); Gotulaw: *(hpbDst++) = ulaw; }
//
// because the actual length of the converted data may not be the
// exact same amount as the estimate we gave in codecQueryBufferSize,
// we need to fill in the actual length we used for the destination
// buffer.
//
padsh->cbDstLengthUsed = (DWORD)(hpbDst - (HPBYTE) padsh->pbDst);
return (MMSYSERR_NOERROR); } // PcmToUlaw()
//==========================================================================;
//
//
//
//
//==========================================================================;
//--------------------------------------------------------------------------;
//
// Name:
// AlawToPcmTable
//
//
// Description:
// this array maps A-law characters to 16-bit PCM
//
//
// Arguments:
// the index into the array is an A-law character
//
// Return:
// an element of the array is a 16-bit PCM value
//
// Notes:
//
//
// History:
// 07/28/93 Created.
//
//
//--------------------------------------------------------------------------;
const SHORT BCODE AlawToPcmTable[256] = { -5504, // y[00]= -688
-5248, // y[01]= -656
-6016, // y[02]= -752
-5760, // y[03]= -720
-4480, // y[04]= -560
-4224, // y[05]= -528
-4992, // y[06]= -624
-4736, // y[07]= -592
-7552, // y[08]= -944
-7296, // y[09]= -912
-8064, // y[0a]= -1008
-7808, // y[0b]= -976
-6528, // y[0c]= -816
-6272, // y[0d]= -784
-7040, // y[0e]= -880
-6784, // y[0f]= -848
-2752, // y[10]= -344
-2624, // y[11]= -328
-3008, // y[12]= -376
-2880, // y[13]= -360
-2240, // y[14]= -280
-2112, // y[15]= -264
-2496, // y[16]= -312
-2368, // y[17]= -296
-3776, // y[18]= -472
-3648, // y[19]= -456
-4032, // y[1a]= -504
-3904, // y[1b]= -488
-3264, // y[1c]= -408
-3136, // y[1d]= -392
-3520, // y[1e]= -440
-3392, // y[1f]= -424
-22016, // y[20]= -2752
-20992, // y[21]= -2624
-24064, // y[22]= -3008
-23040, // y[23]= -2880
-17920, // y[24]= -2240
-16896, // y[25]= -2112
-19968, // y[26]= -2496
-18944, // y[27]= -2368
-30208, // y[28]= -3776
-29184, // y[29]= -3648
-32256, // y[2a]= -4032
-31232, // y[2b]= -3904
-26112, // y[2c]= -3264
-25088, // y[2d]= -3136
-28160, // y[2e]= -3520
-27136, // y[2f]= -3392
-11008, // y[30]= -1376
-10496, // y[31]= -1312
-12032, // y[32]= -1504
-11520, // y[33]= -1440
-8960, // y[34]= -1120
-8448, // y[35]= -1056
-9984, // y[36]= -1248
-9472, // y[37]= -1184
-15104, // y[38]= -1888
-14592, // y[39]= -1824
-16128, // y[3a]= -2016
-15616, // y[3b]= -1952
-13056, // y[3c]= -1632
-12544, // y[3d]= -1568
-14080, // y[3e]= -1760
-13568, // y[3f]= -1696
-344, // y[40]= -43
-328, // y[41]= -41
-376, // y[42]= -47
-360, // y[43]= -45
-280, // y[44]= -35
-264, // y[45]= -33
-312, // y[46]= -39
-296, // y[47]= -37
-472, // y[48]= -59
-456, // y[49]= -57
-504, // y[4a]= -63
-488, // y[4b]= -61
-408, // y[4c]= -51
-392, // y[4d]= -49
-440, // y[4e]= -55
-424, // y[4f]= -53
-88, // y[50]= -11
-72, // y[51]= -9
-120, // y[52]= -15
-104, // y[53]= -13
-24, // y[54]= -3
-8, // y[55]= -1
-56, // y[56]= -7
-40, // y[57]= -5
-216, // y[58]= -27
-200, // y[59]= -25
-248, // y[5a]= -31
-232, // y[5b]= -29
-152, // y[5c]= -19
-136, // y[5d]= -17
-184, // y[5e]= -23
-168, // y[5f]= -21
-1376, // y[60]= -172
-1312, // y[61]= -164
-1504, // y[62]= -188
-1440, // y[63]= -180
-1120, // y[64]= -140
-1056, // y[65]= -132
-1248, // y[66]= -156
-1184, // y[67]= -148
-1888, // y[68]= -236
-1824, // y[69]= -228
-2016, // y[6a]= -252
-1952, // y[6b]= -244
-1632, // y[6c]= -204
-1568, // y[6d]= -196
-1760, // y[6e]= -220
-1696, // y[6f]= -212
-688, // y[70]= -86
-656, // y[71]= -82
-752, // y[72]= -94
-720, // y[73]= -90
-560, // y[74]= -70
-528, // y[75]= -66
-624, // y[76]= -78
-592, // y[77]= -74
-944, // y[78]= -118
-912, // y[79]= -114
-1008, // y[7a]= -126
-976, // y[7b]= -122
-816, // y[7c]= -102
-784, // y[7d]= -98
-880, // y[7e]= -110
-848, // y[7f]= -106
5504, // y[80]= 688
5248, // y[81]= 656
6016, // y[82]= 752
5760, // y[83]= 720
4480, // y[84]= 560
4224, // y[85]= 528
4992, // y[86]= 624
4736, // y[87]= 592
7552, // y[88]= 944
7296, // y[89]= 912
8064, // y[8a]= 1008
7808, // y[8b]= 976
6528, // y[8c]= 816
6272, // y[8d]= 784
7040, // y[8e]= 880
6784, // y[8f]= 848
2752, // y[90]= 344
2624, // y[91]= 328
3008, // y[92]= 376
2880, // y[93]= 360
2240, // y[94]= 280
2112, // y[95]= 264
2496, // y[96]= 312
2368, // y[97]= 296
3776, // y[98]= 472
3648, // y[99]= 456
4032, // y[9a]= 504
3904, // y[9b]= 488
3264, // y[9c]= 408
3136, // y[9d]= 392
3520, // y[9e]= 440
3392, // y[9f]= 424
22016, // y[a0]= 2752
20992, // y[a1]= 2624
24064, // y[a2]= 3008
23040, // y[a3]= 2880
17920, // y[a4]= 2240
16896, // y[a5]= 2112
19968, // y[a6]= 2496
18944, // y[a7]= 2368
30208, // y[a8]= 3776
29184, // y[a9]= 3648
32256, // y[aa]= 4032
31232, // y[ab]= 3904
26112, // y[ac]= 3264
25088, // y[ad]= 3136
28160, // y[ae]= 3520
27136, // y[af]= 3392
11008, // y[b0]= 1376
10496, // y[b1]= 1312
12032, // y[b2]= 1504
11520, // y[b3]= 1440
8960, // y[b4]= 1120
8448, // y[b5]= 1056
9984, // y[b6]= 1248
9472, // y[b7]= 1184
15104, // y[b8]= 1888
14592, // y[b9]= 1824
16128, // y[ba]= 2016
15616, // y[bb]= 1952
13056, // y[bc]= 1632
12544, // y[bd]= 1568
14080, // y[be]= 1760
13568, // y[bf]= 1696
344, // y[c0]= 43
328, // y[c1]= 41
376, // y[c2]= 47
360, // y[c3]= 45
280, // y[c4]= 35
264, // y[c5]= 33
312, // y[c6]= 39
296, // y[c7]= 37
472, // y[c8]= 59
456, // y[c9]= 57
504, // y[ca]= 63
488, // y[cb]= 61
408, // y[cc]= 51
392, // y[cd]= 49
440, // y[ce]= 55
424, // y[cf]= 53
88, // y[d0]= 11
72, // y[d1]= 9
120, // y[d2]= 15
104, // y[d3]= 13
24, // y[d4]= 3
8, // y[d5]= 1
56, // y[d6]= 7
40, // y[d7]= 5
216, // y[d8]= 27
200, // y[d9]= 25
248, // y[da]= 31
232, // y[db]= 29
152, // y[dc]= 19
136, // y[dd]= 17
184, // y[de]= 23
168, // y[df]= 21
1376, // y[e0]= 172
1312, // y[e1]= 164
1504, // y[e2]= 188
1440, // y[e3]= 180
1120, // y[e4]= 140
1056, // y[e5]= 132
1248, // y[e6]= 156
1184, // y[e7]= 148
1888, // y[e8]= 236
1824, // y[e9]= 228
2016, // y[ea]= 252
1952, // y[eb]= 244
1632, // y[ec]= 204
1568, // y[ed]= 196
1760, // y[ee]= 220
1696, // y[ef]= 212
688, // y[f0]= 86
656, // y[f1]= 82
752, // y[f2]= 94
720, // y[f3]= 90
560, // y[f4]= 70
528, // y[f5]= 66
624, // y[f6]= 78
592, // y[f7]= 74
944, // y[f8]= 118
912, // y[f9]= 114
1008, // y[fa]= 126
976, // y[fb]= 122
816, // y[fc]= 102
784, // y[fd]= 98
880, // y[fe]= 110
848 // y[ff]= 106
}; //--------------------------------------------------------------------------;
//
// Name:
// UlawToPcmTable
//
//
// Description:
// this array maps u-law characters to 16-bit PCM
//
// Arguments:
// the index into the array is a u-law character
//
// Return:
// an element of the array is a 16-bit PCM value
//
// Notes:
//
//
// History:
// 07/28/93 Created.
//
//
//--------------------------------------------------------------------------;
const SHORT BCODE UlawToPcmTable[256] = { -32124, // y[00]= -8031
-31100, // y[01]= -7775
-30076, // y[02]= -7519
-29052, // y[03]= -7263
-28028, // y[04]= -7007
-27004, // y[05]= -6751
-25980, // y[06]= -6495
-24956, // y[07]= -6239
-23932, // y[08]= -5983
-22908, // y[09]= -5727
-21884, // y[0a]= -5471
-20860, // y[0b]= -5215
-19836, // y[0c]= -4959
-18812, // y[0d]= -4703
-17788, // y[0e]= -4447
-16764, // y[0f]= -4191
-15996, // y[10]= -3999
-15484, // y[11]= -3871
-14972, // y[12]= -3743
-14460, // y[13]= -3615
-13948, // y[14]= -3487
-13436, // y[15]= -3359
-12924, // y[16]= -3231
-12412, // y[17]= -3103
-11900, // y[18]= -2975
-11388, // y[19]= -2847
-10876, // y[1a]= -2719
-10364, // y[1b]= -2591
-9852, // y[1c]= -2463
-9340, // y[1d]= -2335
-8828, // y[1e]= -2207
-8316, // y[1f]= -2079
-7932, // y[20]= -1983
-7676, // y[21]= -1919
-7420, // y[22]= -1855
-7164, // y[23]= -1791
-6908, // y[24]= -1727
-6652, // y[25]= -1663
-6396, // y[26]= -1599
-6140, // y[27]= -1535
-5884, // y[28]= -1471
-5628, // y[29]= -1407
-5372, // y[2a]= -1343
-5116, // y[2b]= -1279
-4860, // y[2c]= -1215
-4604, // y[2d]= -1151
-4348, // y[2e]= -1087
-4092, // y[2f]= -1023
-3900, // y[30]= -975
-3772, // y[31]= -943
-3644, // y[32]= -911
-3516, // y[33]= -879
-3388, // y[34]= -847
-3260, // y[35]= -815
-3132, // y[36]= -783
-3004, // y[37]= -751
-2876, // y[38]= -719
-2748, // y[39]= -687
-2620, // y[3a]= -655
-2492, // y[3b]= -623
-2364, // y[3c]= -591
-2236, // y[3d]= -559
-2108, // y[3e]= -527
-1980, // y[3f]= -495
-1884, // y[40]= -471
-1820, // y[41]= -455
-1756, // y[42]= -439
-1692, // y[43]= -423
-1628, // y[44]= -407
-1564, // y[45]= -391
-1500, // y[46]= -375
-1436, // y[47]= -359
-1372, // y[48]= -343
-1308, // y[49]= -327
-1244, // y[4a]= -311
-1180, // y[4b]= -295
-1116, // y[4c]= -279
-1052, // y[4d]= -263
-988, // y[4e]= -247
-924, // y[4f]= -231
-876, // y[50]= -219
-844, // y[51]= -211
-812, // y[52]= -203
-780, // y[53]= -195
-748, // y[54]= -187
-716, // y[55]= -179
-684, // y[56]= -171
-652, // y[57]= -163
-620, // y[58]= -155
-588, // y[59]= -147
-556, // y[5a]= -139
-524, // y[5b]= -131
-492, // y[5c]= -123
-460, // y[5d]= -115
-428, // y[5e]= -107
-396, // y[5f]= -99
-372, // y[60]= -93
-356, // y[61]= -89
-340, // y[62]= -85
-324, // y[63]= -81
-308, // y[64]= -77
-292, // y[65]= -73
-276, // y[66]= -69
-260, // y[67]= -65
-244, // y[68]= -61
-228, // y[69]= -57
-212, // y[6a]= -53
-196, // y[6b]= -49
-180, // y[6c]= -45
-164, // y[6d]= -41
-148, // y[6e]= -37
-132, // y[6f]= -33
-120, // y[70]= -30
-112, // y[71]= -28
-104, // y[72]= -26
-96, // y[73]= -24
-88, // y[74]= -22
-80, // y[75]= -20
-72, // y[76]= -18
-64, // y[77]= -16
-56, // y[78]= -14
-48, // y[79]= -12
-40, // y[7a]= -10
-32, // y[7b]= -8
-24, // y[7c]= -6
-16, // y[7d]= -4
-8, // y[7e]= -2
0, // y[7f]= 0
32124, // y[80]= 8031
31100, // y[81]= 7775
30076, // y[82]= 7519
29052, // y[83]= 7263
28028, // y[84]= 7007
27004, // y[85]= 6751
25980, // y[86]= 6495
24956, // y[87]= 6239
23932, // y[88]= 5983
22908, // y[89]= 5727
21884, // y[8a]= 5471
20860, // y[8b]= 5215
19836, // y[8c]= 4959
18812, // y[8d]= 4703
17788, // y[8e]= 4447
16764, // y[8f]= 4191
15996, // y[90]= 3999
15484, // y[91]= 3871
14972, // y[92]= 3743
14460, // y[93]= 3615
13948, // y[94]= 3487
13436, // y[95]= 3359
12924, // y[96]= 3231
12412, // y[97]= 3103
11900, // y[98]= 2975
11388, // y[99]= 2847
10876, // y[9a]= 2719
10364, // y[9b]= 2591
9852, // y[9c]= 2463
9340, // y[9d]= 2335
8828, // y[9e]= 2207
8316, // y[9f]= 2079
7932, // y[a0]= 1983
7676, // y[a1]= 1919
7420, // y[a2]= 1855
7164, // y[a3]= 1791
6908, // y[a4]= 1727
6652, // y[a5]= 1663
6396, // y[a6]= 1599
6140, // y[a7]= 1535
5884, // y[a8]= 1471
5628, // y[a9]= 1407
5372, // y[aa]= 1343
5116, // y[ab]= 1279
4860, // y[ac]= 1215
4604, // y[ad]= 1151
4348, // y[ae]= 1087
4092, // y[af]= 1023
3900, // y[b0]= 975
3772, // y[b1]= 943
3644, // y[b2]= 911
3516, // y[b3]= 879
3388, // y[b4]= 847
3260, // y[b5]= 815
3132, // y[b6]= 783
3004, // y[b7]= 751
2876, // y[b8]= 719
2748, // y[b9]= 687
2620, // y[ba]= 655
2492, // y[bb]= 623
2364, // y[bc]= 591
2236, // y[bd]= 559
2108, // y[be]= 527
1980, // y[bf]= 495
1884, // y[c0]= 471
1820, // y[c1]= 455
1756, // y[c2]= 439
1692, // y[c3]= 423
1628, // y[c4]= 407
1564, // y[c5]= 391
1500, // y[c6]= 375
1436, // y[c7]= 359
1372, // y[c8]= 343
1308, // y[c9]= 327
1244, // y[ca]= 311
1180, // y[cb]= 295
1116, // y[cc]= 279
1052, // y[cd]= 263
988, // y[ce]= 247
924, // y[cf]= 231
876, // y[d0]= 219
844, // y[d1]= 211
812, // y[d2]= 203
780, // y[d3]= 195
748, // y[d4]= 187
716, // y[d5]= 179
684, // y[d6]= 171
652, // y[d7]= 163
620, // y[d8]= 155
588, // y[d9]= 147
556, // y[da]= 139
524, // y[db]= 131
492, // y[dc]= 123
460, // y[dd]= 115
428, // y[de]= 107
396, // y[df]= 99
372, // y[e0]= 93
356, // y[e1]= 89
340, // y[e2]= 85
324, // y[e3]= 81
308, // y[e4]= 77
292, // y[e5]= 73
276, // y[e6]= 69
260, // y[e7]= 65
244, // y[e8]= 61
228, // y[e9]= 57
212, // y[ea]= 53
196, // y[eb]= 49
180, // y[ec]= 45
164, // y[ed]= 41
148, // y[ee]= 37
132, // y[ef]= 33
120, // y[f0]= 30
112, // y[f1]= 28
104, // y[f2]= 26
96, // y[f3]= 24
88, // y[f4]= 22
80, // y[f5]= 20
72, // y[f6]= 18
64, // y[f7]= 16
56, // y[f8]= 14
48, // y[f9]= 12
40, // y[fa]= 10
32, // y[fb]= 8
24, // y[fc]= 6
16, // y[fd]= 4
8, // y[fe]= 2
0 // y[ff]= 0
}; //--------------------------------------------------------------------------;
//
// Name:
// AlawToUlawTable
//
//
// Description:
// this array maps A-law characters to u-law characters
//
// Arguments:
// the index into the array is an A-law character
//
// Return:
// an element of the array is a u-law character
//
// Notes:
//
//
// History:
// 08/01/93 Created.
//
//
//--------------------------------------------------------------------------;
const BYTE BCODE AlawToUlawTable[256] = { 0x2a, // A-law[00] ==> u-law[2a]
0x2b, // A-law[01] ==> u-law[2b]
0x28, // A-law[02] ==> u-law[28]
0x29, // A-law[03] ==> u-law[29]
0x2e, // A-law[04] ==> u-law[2e]
0x2f, // A-law[05] ==> u-law[2f]
0x2c, // A-law[06] ==> u-law[2c]
0x2d, // A-law[07] ==> u-law[2d]
0x22, // A-law[08] ==> u-law[22]
0x23, // A-law[09] ==> u-law[23]
0x20, // A-law[0a] ==> u-law[20]
0x21, // A-law[0b] ==> u-law[21]
0x26, // A-law[0c] ==> u-law[26]
0x27, // A-law[0d] ==> u-law[27]
0x24, // A-law[0e] ==> u-law[24]
0x25, // A-law[0f] ==> u-law[25]
0x39, // A-law[10] ==> u-law[39]
0x3a, // A-law[11] ==> u-law[3a]
0x37, // A-law[12] ==> u-law[37]
0x38, // A-law[13] ==> u-law[38]
0x3d, // A-law[14] ==> u-law[3d]
0x3e, // A-law[15] ==> u-law[3e]
0x3b, // A-law[16] ==> u-law[3b]
0x3c, // A-law[17] ==> u-law[3c]
0x31, // A-law[18] ==> u-law[31]
0x32, // A-law[19] ==> u-law[32]
0x30, // A-law[1a] ==> u-law[30]
0x30, // A-law[1b] ==> u-law[30]
0x35, // A-law[1c] ==> u-law[35]
0x36, // A-law[1d] ==> u-law[36]
0x33, // A-law[1e] ==> u-law[33]
0x34, // A-law[1f] ==> u-law[34]
0x0a, // A-law[20] ==> u-law[0a]
0x0b, // A-law[21] ==> u-law[0b]
0x08, // A-law[22] ==> u-law[08]
0x09, // A-law[23] ==> u-law[09]
0x0e, // A-law[24] ==> u-law[0e]
0x0f, // A-law[25] ==> u-law[0f]
0x0c, // A-law[26] ==> u-law[0c]
0x0d, // A-law[27] ==> u-law[0d]
0x02, // A-law[28] ==> u-law[02]
0x03, // A-law[29] ==> u-law[03]
0x00, // A-law[2a] ==> u-law[00]
0x01, // A-law[2b] ==> u-law[01]
0x06, // A-law[2c] ==> u-law[06]
0x07, // A-law[2d] ==> u-law[07]
0x04, // A-law[2e] ==> u-law[04]
0x05, // A-law[2f] ==> u-law[05]
0x1a, // A-law[30] ==> u-law[1a]
0x1b, // A-law[31] ==> u-law[1b]
0x18, // A-law[32] ==> u-law[18]
0x19, // A-law[33] ==> u-law[19]
0x1e, // A-law[34] ==> u-law[1e]
0x1f, // A-law[35] ==> u-law[1f]
0x1c, // A-law[36] ==> u-law[1c]
0x1d, // A-law[37] ==> u-law[1d]
0x12, // A-law[38] ==> u-law[12]
0x13, // A-law[39] ==> u-law[13]
0x10, // A-law[3a] ==> u-law[10]
0x11, // A-law[3b] ==> u-law[11]
0x16, // A-law[3c] ==> u-law[16]
0x17, // A-law[3d] ==> u-law[17]
0x14, // A-law[3e] ==> u-law[14]
0x15, // A-law[3f] ==> u-law[15]
0x62, // A-law[40] ==> u-law[62]
0x63, // A-law[41] ==> u-law[63]
0x60, // A-law[42] ==> u-law[60]
0x61, // A-law[43] ==> u-law[61]
0x66, // A-law[44] ==> u-law[66]
0x67, // A-law[45] ==> u-law[67]
0x64, // A-law[46] ==> u-law[64]
0x65, // A-law[47] ==> u-law[65]
0x5d, // A-law[48] ==> u-law[5d]
0x5d, // A-law[49] ==> u-law[5d]
0x5c, // A-law[4a] ==> u-law[5c]
0x5c, // A-law[4b] ==> u-law[5c]
0x5f, // A-law[4c] ==> u-law[5f]
0x5f, // A-law[4d] ==> u-law[5f]
0x5e, // A-law[4e] ==> u-law[5e]
0x5e, // A-law[4f] ==> u-law[5e]
0x74, // A-law[50] ==> u-law[74]
0x76, // A-law[51] ==> u-law[76]
0x70, // A-law[52] ==> u-law[70]
0x72, // A-law[53] ==> u-law[72]
0x7c, // A-law[54] ==> u-law[7c]
0x7e, // A-law[55] ==> u-law[7e]
0x78, // A-law[56] ==> u-law[78]
0x7a, // A-law[57] ==> u-law[7a]
0x6a, // A-law[58] ==> u-law[6a]
0x6b, // A-law[59] ==> u-law[6b]
0x68, // A-law[5a] ==> u-law[68]
0x69, // A-law[5b] ==> u-law[69]
0x6e, // A-law[5c] ==> u-law[6e]
0x6f, // A-law[5d] ==> u-law[6f]
0x6c, // A-law[5e] ==> u-law[6c]
0x6d, // A-law[5f] ==> u-law[6d]
0x48, // A-law[60] ==> u-law[48]
0x49, // A-law[61] ==> u-law[49]
0x46, // A-law[62] ==> u-law[46]
0x47, // A-law[63] ==> u-law[47]
0x4c, // A-law[64] ==> u-law[4c]
0x4d, // A-law[65] ==> u-law[4d]
0x4a, // A-law[66] ==> u-law[4a]
0x4b, // A-law[67] ==> u-law[4b]
0x40, // A-law[68] ==> u-law[40]
0x41, // A-law[69] ==> u-law[41]
0x3f, // A-law[6a] ==> u-law[3f]
0x3f, // A-law[6b] ==> u-law[3f]
0x44, // A-law[6c] ==> u-law[44]
0x45, // A-law[6d] ==> u-law[45]
0x42, // A-law[6e] ==> u-law[42]
0x43, // A-law[6f] ==> u-law[43]
0x56, // A-law[70] ==> u-law[56]
0x57, // A-law[71] ==> u-law[57]
0x54, // A-law[72] ==> u-law[54]
0x55, // A-law[73] ==> u-law[55]
0x5a, // A-law[74] ==> u-law[5a]
0x5b, // A-law[75] ==> u-law[5b]
0x58, // A-law[76] ==> u-law[58]
0x59, // A-law[77] ==> u-law[59]
0x4f, // A-law[78] ==> u-law[4f]
0x4f, // A-law[79] ==> u-law[4f]
0x4e, // A-law[7a] ==> u-law[4e]
0x4e, // A-law[7b] ==> u-law[4e]
0x52, // A-law[7c] ==> u-law[52]
0x53, // A-law[7d] ==> u-law[53]
0x50, // A-law[7e] ==> u-law[50]
0x51, // A-law[7f] ==> u-law[51]
0xaa, // A-law[80] ==> u-law[aa]
0xab, // A-law[81] ==> u-law[ab]
0xa8, // A-law[82] ==> u-law[a8]
0xa9, // A-law[83] ==> u-law[a9]
0xae, // A-law[84] ==> u-law[ae]
0xaf, // A-law[85] ==> u-law[af]
0xac, // A-law[86] ==> u-law[ac]
0xad, // A-law[87] ==> u-law[ad]
0xa2, // A-law[88] ==> u-law[a2]
0xa3, // A-law[89] ==> u-law[a3]
0xa0, // A-law[8a] ==> u-law[a0]
0xa1, // A-law[8b] ==> u-law[a1]
0xa6, // A-law[8c] ==> u-law[a6]
0xa7, // A-law[8d] ==> u-law[a7]
0xa4, // A-law[8e] ==> u-law[a4]
0xa5, // A-law[8f] ==> u-law[a5]
0xb9, // A-law[90] ==> u-law[b9]
0xba, // A-law[91] ==> u-law[ba]
0xb7, // A-law[92] ==> u-law[b7]
0xb8, // A-law[93] ==> u-law[b8]
0xbd, // A-law[94] ==> u-law[bd]
0xbe, // A-law[95] ==> u-law[be]
0xbb, // A-law[96] ==> u-law[bb]
0xbc, // A-law[97] ==> u-law[bc]
0xb1, // A-law[98] ==> u-law[b1]
0xb2, // A-law[99] ==> u-law[b2]
0xb0, // A-law[9a] ==> u-law[b0]
0xb0, // A-law[9b] ==> u-law[b0]
0xb5, // A-law[9c] ==> u-law[b5]
0xb6, // A-law[9d] ==> u-law[b6]
0xb3, // A-law[9e] ==> u-law[b3]
0xb4, // A-law[9f] ==> u-law[b4]
0x8a, // A-law[a0] ==> u-law[8a]
0x8b, // A-law[a1] ==> u-law[8b]
0x88, // A-law[a2] ==> u-law[88]
0x89, // A-law[a3] ==> u-law[89]
0x8e, // A-law[a4] ==> u-law[8e]
0x8f, // A-law[a5] ==> u-law[8f]
0x8c, // A-law[a6] ==> u-law[8c]
0x8d, // A-law[a7] ==> u-law[8d]
0x82, // A-law[a8] ==> u-law[82]
0x83, // A-law[a9] ==> u-law[83]
0x80, // A-law[aa] ==> u-law[80]
0x81, // A-law[ab] ==> u-law[81]
0x86, // A-law[ac] ==> u-law[86]
0x87, // A-law[ad] ==> u-law[87]
0x84, // A-law[ae] ==> u-law[84]
0x85, // A-law[af] ==> u-law[85]
0x9a, // A-law[b0] ==> u-law[9a]
0x9b, // A-law[b1] ==> u-law[9b]
0x98, // A-law[b2] ==> u-law[98]
0x99, // A-law[b3] ==> u-law[99]
0x9e, // A-law[b4] ==> u-law[9e]
0x9f, // A-law[b5] ==> u-law[9f]
0x9c, // A-law[b6] ==> u-law[9c]
0x9d, // A-law[b7] ==> u-law[9d]
0x92, // A-law[b8] ==> u-law[92]
0x93, // A-law[b9] ==> u-law[93]
0x90, // A-law[ba] ==> u-law[90]
0x91, // A-law[bb] ==> u-law[91]
0x96, // A-law[bc] ==> u-law[96]
0x97, // A-law[bd] ==> u-law[97]
0x94, // A-law[be] ==> u-law[94]
0x95, // A-law[bf] ==> u-law[95]
0xe2, // A-law[c0] ==> u-law[e2]
0xe3, // A-law[c1] ==> u-law[e3]
0xe0, // A-law[c2] ==> u-law[e0]
0xe1, // A-law[c3] ==> u-law[e1]
0xe6, // A-law[c4] ==> u-law[e6]
0xe7, // A-law[c5] ==> u-law[e7]
0xe4, // A-law[c6] ==> u-law[e4]
0xe5, // A-law[c7] ==> u-law[e5]
0xdd, // A-law[c8] ==> u-law[dd]
0xdd, // A-law[c9] ==> u-law[dd]
0xdc, // A-law[ca] ==> u-law[dc]
0xdc, // A-law[cb] ==> u-law[dc]
0xdf, // A-law[cc] ==> u-law[df]
0xdf, // A-law[cd] ==> u-law[df]
0xde, // A-law[ce] ==> u-law[de]
0xde, // A-law[cf] ==> u-law[de]
0xf4, // A-law[d0] ==> u-law[f4]
0xf6, // A-law[d1] ==> u-law[f6]
0xf0, // A-law[d2] ==> u-law[f0]
0xf2, // A-law[d3] ==> u-law[f2]
0xfc, // A-law[d4] ==> u-law[fc]
0xfe, // A-law[d5] ==> u-law[fe]
0xf8, // A-law[d6] ==> u-law[f8]
0xfa, // A-law[d7] ==> u-law[fa]
0xea, // A-law[d8] ==> u-law[ea]
0xeb, // A-law[d9] ==> u-law[eb]
0xe8, // A-law[da] ==> u-law[e8]
0xe9, // A-law[db] ==> u-law[e9]
0xee, // A-law[dc] ==> u-law[ee]
0xef, // A-law[dd] ==> u-law[ef]
0xec, // A-law[de] ==> u-law[ec]
0xed, // A-law[df] ==> u-law[ed]
0xc8, // A-law[e0] ==> u-law[c8]
0xc9, // A-law[e1] ==> u-law[c9]
0xc6, // A-law[e2] ==> u-law[c6]
0xc7, // A-law[e3] ==> u-law[c7]
0xcc, // A-law[e4] ==> u-law[cc]
0xcd, // A-law[e5] ==> u-law[cd]
0xca, // A-law[e6] ==> u-law[ca]
0xcb, // A-law[e7] ==> u-law[cb]
0xc0, // A-law[e8] ==> u-law[c0]
0xc1, // A-law[e9] ==> u-law[c1]
0xbf, // A-law[ea] ==> u-law[bf]
0xbf, // A-law[eb] ==> u-law[bf]
0xc4, // A-law[ec] ==> u-law[c4]
0xc5, // A-law[ed] ==> u-law[c5]
0xc2, // A-law[ee] ==> u-law[c2]
0xc3, // A-law[ef] ==> u-law[c3]
0xd6, // A-law[f0] ==> u-law[d6]
0xd7, // A-law[f1] ==> u-law[d7]
0xd4, // A-law[f2] ==> u-law[d4]
0xd5, // A-law[f3] ==> u-law[d5]
0xda, // A-law[f4] ==> u-law[da]
0xdb, // A-law[f5] ==> u-law[db]
0xd8, // A-law[f6] ==> u-law[d8]
0xd9, // A-law[f7] ==> u-law[d9]
0xcf, // A-law[f8] ==> u-law[cf]
0xcf, // A-law[f9] ==> u-law[cf]
0xce, // A-law[fa] ==> u-law[ce]
0xce, // A-law[fb] ==> u-law[ce]
0xd2, // A-law[fc] ==> u-law[d2]
0xd3, // A-law[fd] ==> u-law[d3]
0xd0, // A-law[fe] ==> u-law[d0]
0xd1 // A-law[ff] ==> u-law[d1]
}; //--------------------------------------------------------------------------;
//
// Name:
// UlawToAlawTable
//
//
// Description:
// this array maps u-law characters to A-law characters
//
// Arguments:
// the index into the array is a u-law character
//
// Return:
// an element of the array is an A-law character
//
// Notes:
//
//
// History:
// 08/01/93 Created.
//
//
//--------------------------------------------------------------------------;
const BYTE BCODE UlawToAlawTable[256] = { 0x2a, // u-law[00] ==> A-law[2a]
0x2b, // u-law[01] ==> A-law[2b]
0x28, // u-law[02] ==> A-law[28]
0x29, // u-law[03] ==> A-law[29]
0x2e, // u-law[04] ==> A-law[2e]
0x2f, // u-law[05] ==> A-law[2f]
0x2c, // u-law[06] ==> A-law[2c]
0x2d, // u-law[07] ==> A-law[2d]
0x22, // u-law[08] ==> A-law[22]
0x23, // u-law[09] ==> A-law[23]
0x20, // u-law[0a] ==> A-law[20]
0x21, // u-law[0b] ==> A-law[21]
0x26, // u-law[0c] ==> A-law[26]
0x27, // u-law[0d] ==> A-law[27]
0x24, // u-law[0e] ==> A-law[24]
0x25, // u-law[0f] ==> A-law[25]
0x3a, // u-law[10] ==> A-law[3a]
0x3b, // u-law[11] ==> A-law[3b]
0x38, // u-law[12] ==> A-law[38]
0x39, // u-law[13] ==> A-law[39]
0x3e, // u-law[14] ==> A-law[3e]
0x3f, // u-law[15] ==> A-law[3f]
0x3c, // u-law[16] ==> A-law[3c]
0x3d, // u-law[17] ==> A-law[3d]
0x32, // u-law[18] ==> A-law[32]
0x33, // u-law[19] ==> A-law[33]
0x30, // u-law[1a] ==> A-law[30]
0x31, // u-law[1b] ==> A-law[31]
0x36, // u-law[1c] ==> A-law[36]
0x37, // u-law[1d] ==> A-law[37]
0x34, // u-law[1e] ==> A-law[34]
0x35, // u-law[1f] ==> A-law[35]
0x0a, // u-law[20] ==> A-law[0a]
0x0b, // u-law[21] ==> A-law[0b]
0x08, // u-law[22] ==> A-law[08]
0x09, // u-law[23] ==> A-law[09]
0x0e, // u-law[24] ==> A-law[0e]
0x0f, // u-law[25] ==> A-law[0f]
0x0c, // u-law[26] ==> A-law[0c]
0x0d, // u-law[27] ==> A-law[0d]
0x02, // u-law[28] ==> A-law[02]
0x03, // u-law[29] ==> A-law[03]
0x00, // u-law[2a] ==> A-law[00]
0x01, // u-law[2b] ==> A-law[01]
0x06, // u-law[2c] ==> A-law[06]
0x07, // u-law[2d] ==> A-law[07]
0x04, // u-law[2e] ==> A-law[04]
0x05, // u-law[2f] ==> A-law[05]
0x1b, // u-law[30] ==> A-law[1b]
0x18, // u-law[31] ==> A-law[18]
0x19, // u-law[32] ==> A-law[19]
0x1e, // u-law[33] ==> A-law[1e]
0x1f, // u-law[34] ==> A-law[1f]
0x1c, // u-law[35] ==> A-law[1c]
0x1d, // u-law[36] ==> A-law[1d]
0x12, // u-law[37] ==> A-law[12]
0x13, // u-law[38] ==> A-law[13]
0x10, // u-law[39] ==> A-law[10]
0x11, // u-law[3a] ==> A-law[11]
0x16, // u-law[3b] ==> A-law[16]
0x17, // u-law[3c] ==> A-law[17]
0x14, // u-law[3d] ==> A-law[14]
0x15, // u-law[3e] ==> A-law[15]
0x6a, // u-law[3f] ==> A-law[6a]
0x68, // u-law[40] ==> A-law[68]
0x69, // u-law[41] ==> A-law[69]
0x6e, // u-law[42] ==> A-law[6e]
0x6f, // u-law[43] ==> A-law[6f]
0x6c, // u-law[44] ==> A-law[6c]
0x6d, // u-law[45] ==> A-law[6d]
0x62, // u-law[46] ==> A-law[62]
0x63, // u-law[47] ==> A-law[63]
0x60, // u-law[48] ==> A-law[60]
0x61, // u-law[49] ==> A-law[61]
0x66, // u-law[4a] ==> A-law[66]
0x67, // u-law[4b] ==> A-law[67]
0x64, // u-law[4c] ==> A-law[64]
0x65, // u-law[4d] ==> A-law[65]
0x7a, // u-law[4e] ==> A-law[7a]
0x78, // u-law[4f] ==> A-law[78]
0x7e, // u-law[50] ==> A-law[7e]
0x7f, // u-law[51] ==> A-law[7f]
0x7c, // u-law[52] ==> A-law[7c]
0x7d, // u-law[53] ==> A-law[7d]
0x72, // u-law[54] ==> A-law[72]
0x73, // u-law[55] ==> A-law[73]
0x70, // u-law[56] ==> A-law[70]
0x71, // u-law[57] ==> A-law[71]
0x76, // u-law[58] ==> A-law[76]
0x77, // u-law[59] ==> A-law[77]
0x74, // u-law[5a] ==> A-law[74]
0x75, // u-law[5b] ==> A-law[75]
0x4b, // u-law[5c] ==> A-law[4b]
0x49, // u-law[5d] ==> A-law[49]
0x4f, // u-law[5e] ==> A-law[4f]
0x4d, // u-law[5f] ==> A-law[4d]
0x42, // u-law[60] ==> A-law[42]
0x43, // u-law[61] ==> A-law[43]
0x40, // u-law[62] ==> A-law[40]
0x41, // u-law[63] ==> A-law[41]
0x46, // u-law[64] ==> A-law[46]
0x47, // u-law[65] ==> A-law[47]
0x44, // u-law[66] ==> A-law[44]
0x45, // u-law[67] ==> A-law[45]
0x5a, // u-law[68] ==> A-law[5a]
0x5b, // u-law[69] ==> A-law[5b]
0x58, // u-law[6a] ==> A-law[58]
0x59, // u-law[6b] ==> A-law[59]
0x5e, // u-law[6c] ==> A-law[5e]
0x5f, // u-law[6d] ==> A-law[5f]
0x5c, // u-law[6e] ==> A-law[5c]
0x5d, // u-law[6f] ==> A-law[5d]
0x52, // u-law[70] ==> A-law[52]
0x52, // u-law[71] ==> A-law[52]
0x53, // u-law[72] ==> A-law[53]
0x53, // u-law[73] ==> A-law[53]
0x50, // u-law[74] ==> A-law[50]
0x50, // u-law[75] ==> A-law[50]
0x51, // u-law[76] ==> A-law[51]
0x51, // u-law[77] ==> A-law[51]
0x56, // u-law[78] ==> A-law[56]
0x56, // u-law[79] ==> A-law[56]
0x57, // u-law[7a] ==> A-law[57]
0x57, // u-law[7b] ==> A-law[57]
0x54, // u-law[7c] ==> A-law[54]
0x54, // u-law[7d] ==> A-law[54]
0x55, // u-law[7e] ==> A-law[55]
0x55, // u-law[7f] ==> A-law[55]
0xaa, // u-law[80] ==> A-law[aa]
0xab, // u-law[81] ==> A-law[ab]
0xa8, // u-law[82] ==> A-law[a8]
0xa9, // u-law[83] ==> A-law[a9]
0xae, // u-law[84] ==> A-law[ae]
0xaf, // u-law[85] ==> A-law[af]
0xac, // u-law[86] ==> A-law[ac]
0xad, // u-law[87] ==> A-law[ad]
0xa2, // u-law[88] ==> A-law[a2]
0xa3, // u-law[89] ==> A-law[a3]
0xa0, // u-law[8a] ==> A-law[a0]
0xa1, // u-law[8b] ==> A-law[a1]
0xa6, // u-law[8c] ==> A-law[a6]
0xa7, // u-law[8d] ==> A-law[a7]
0xa4, // u-law[8e] ==> A-law[a4]
0xa5, // u-law[8f] ==> A-law[a5]
0xba, // u-law[90] ==> A-law[ba]
0xbb, // u-law[91] ==> A-law[bb]
0xb8, // u-law[92] ==> A-law[b8]
0xb9, // u-law[93] ==> A-law[b9]
0xbe, // u-law[94] ==> A-law[be]
0xbf, // u-law[95] ==> A-law[bf]
0xbc, // u-law[96] ==> A-law[bc]
0xbd, // u-law[97] ==> A-law[bd]
0xb2, // u-law[98] ==> A-law[b2]
0xb3, // u-law[99] ==> A-law[b3]
0xb0, // u-law[9a] ==> A-law[b0]
0xb1, // u-law[9b] ==> A-law[b1]
0xb6, // u-law[9c] ==> A-law[b6]
0xb7, // u-law[9d] ==> A-law[b7]
0xb4, // u-law[9e] ==> A-law[b4]
0xb5, // u-law[9f] ==> A-law[b5]
0x8a, // u-law[a0] ==> A-law[8a]
0x8b, // u-law[a1] ==> A-law[8b]
0x88, // u-law[a2] ==> A-law[88]
0x89, // u-law[a3] ==> A-law[89]
0x8e, // u-law[a4] ==> A-law[8e]
0x8f, // u-law[a5] ==> A-law[8f]
0x8c, // u-law[a6] ==> A-law[8c]
0x8d, // u-law[a7] ==> A-law[8d]
0x82, // u-law[a8] ==> A-law[82]
0x83, // u-law[a9] ==> A-law[83]
0x80, // u-law[aa] ==> A-law[80]
0x81, // u-law[ab] ==> A-law[81]
0x86, // u-law[ac] ==> A-law[86]
0x87, // u-law[ad] ==> A-law[87]
0x84, // u-law[ae] ==> A-law[84]
0x85, // u-law[af] ==> A-law[85]
0x9b, // u-law[b0] ==> A-law[9b]
0x98, // u-law[b1] ==> A-law[98]
0x99, // u-law[b2] ==> A-law[99]
0x9e, // u-law[b3] ==> A-law[9e]
0x9f, // u-law[b4] ==> A-law[9f]
0x9c, // u-law[b5] ==> A-law[9c]
0x9d, // u-law[b6] ==> A-law[9d]
0x92, // u-law[b7] ==> A-law[92]
0x93, // u-law[b8] ==> A-law[93]
0x90, // u-law[b9] ==> A-law[90]
0x91, // u-law[ba] ==> A-law[91]
0x96, // u-law[bb] ==> A-law[96]
0x97, // u-law[bc] ==> A-law[97]
0x94, // u-law[bd] ==> A-law[94]
0x95, // u-law[be] ==> A-law[95]
0xea, // u-law[bf] ==> A-law[ea]
0xe8, // u-law[c0] ==> A-law[e8]
0xe9, // u-law[c1] ==> A-law[e9]
0xee, // u-law[c2] ==> A-law[ee]
0xef, // u-law[c3] ==> A-law[ef]
0xec, // u-law[c4] ==> A-law[ec]
0xed, // u-law[c5] ==> A-law[ed]
0xe2, // u-law[c6] ==> A-law[e2]
0xe3, // u-law[c7] ==> A-law[e3]
0xe0, // u-law[c8] ==> A-law[e0]
0xe1, // u-law[c9] ==> A-law[e1]
0xe6, // u-law[ca] ==> A-law[e6]
0xe7, // u-law[cb] ==> A-law[e7]
0xe4, // u-law[cc] ==> A-law[e4]
0xe5, // u-law[cd] ==> A-law[e5]
0xfa, // u-law[ce] ==> A-law[fa]
0xf8, // u-law[cf] ==> A-law[f8]
0xfe, // u-law[d0] ==> A-law[fe]
0xff, // u-law[d1] ==> A-law[ff]
0xfc, // u-law[d2] ==> A-law[fc]
0xfd, // u-law[d3] ==> A-law[fd]
0xf2, // u-law[d4] ==> A-law[f2]
0xf3, // u-law[d5] ==> A-law[f3]
0xf0, // u-law[d6] ==> A-law[f0]
0xf1, // u-law[d7] ==> A-law[f1]
0xf6, // u-law[d8] ==> A-law[f6]
0xf7, // u-law[d9] ==> A-law[f7]
0xf4, // u-law[da] ==> A-law[f4]
0xf5, // u-law[db] ==> A-law[f5]
0xcb, // u-law[dc] ==> A-law[cb]
0xc9, // u-law[dd] ==> A-law[c9]
0xcf, // u-law[de] ==> A-law[cf]
0xcd, // u-law[df] ==> A-law[cd]
0xc2, // u-law[e0] ==> A-law[c2]
0xc3, // u-law[e1] ==> A-law[c3]
0xc0, // u-law[e2] ==> A-law[c0]
0xc1, // u-law[e3] ==> A-law[c1]
0xc6, // u-law[e4] ==> A-law[c6]
0xc7, // u-law[e5] ==> A-law[c7]
0xc4, // u-law[e6] ==> A-law[c4]
0xc5, // u-law[e7] ==> A-law[c5]
0xda, // u-law[e8] ==> A-law[da]
0xdb, // u-law[e9] ==> A-law[db]
0xd8, // u-law[ea] ==> A-law[d8]
0xd9, // u-law[eb] ==> A-law[d9]
0xde, // u-law[ec] ==> A-law[de]
0xdf, // u-law[ed] ==> A-law[df]
0xdc, // u-law[ee] ==> A-law[dc]
0xdd, // u-law[ef] ==> A-law[dd]
0xd2, // u-law[f0] ==> A-law[d2]
0xd2, // u-law[f1] ==> A-law[d2]
0xd3, // u-law[f2] ==> A-law[d3]
0xd3, // u-law[f3] ==> A-law[d3]
0xd0, // u-law[f4] ==> A-law[d0]
0xd0, // u-law[f5] ==> A-law[d0]
0xd1, // u-law[f6] ==> A-law[d1]
0xd1, // u-law[f7] ==> A-law[d1]
0xd6, // u-law[f8] ==> A-law[d6]
0xd6, // u-law[f9] ==> A-law[d6]
0xd7, // u-law[fa] ==> A-law[d7]
0xd7, // u-law[fb] ==> A-law[d7]
0xd4, // u-law[fc] ==> A-law[d4]
0xd4, // u-law[fd] ==> A-law[d4]
0xd5, // u-law[fe] ==> A-law[d5]
0xd5 // u-law[ff] ==> A-law[d5]
};
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