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Initial commit of Command & Conquer Red Alert source code.

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LFeenanEA
2025-02-27 16:15:05 +00:00
parent b685cea758
commit 5e733d5dcc
2082 changed files with 797727 additions and 0 deletions
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CODE/ADPCM.CPP Normal file
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/*
** Command & Conquer Red Alert(tm)
** Copyright 2025 Electronic Arts Inc.
**
** This program is free software: you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation, either version 3 of the License, or
** (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "function.h"
extern "C" {
#include "soscomp.h"
#include "itable.cpp"
#include "dtable.cpp"
void sosCODECInitStream(_SOS_COMPRESS_INFO* info)
{
info->dwSampleIndex = 0;
info->dwPredicted = 0;
}
unsigned long sosCODECDecompressData(_SOS_COMPRESS_INFO* info, unsigned long numbytes)
{
unsigned long token;
long sample;
unsigned int fastindex;
unsigned char *inbuff;
unsigned short *outbuff;
inbuff = (unsigned char *)info->lpSource;
outbuff = (unsigned short *)info->lpDest;
// Preload variables before the big loop
fastindex = (unsigned int)info->dwSampleIndex;
sample = info->dwPredicted;
if (!numbytes)
goto SkipLoop;
do {
// First nibble
token = *inbuff++;
fastindex += token & 0x0f;
sample += DiffTable[fastindex];
fastindex = IndexTable[fastindex];
if (sample > 32767L)
sample = 32767L;
if (sample < -32768L)
sample = -32768L;
*outbuff++ = (unsigned short)sample;
// Second nibble
fastindex += token >> 4;
sample += DiffTable[fastindex];
fastindex = IndexTable[fastindex];
if (sample > 32767L)
sample = 32767L;
if (sample < -32768L)
sample = -32768L;
*outbuff++ = (unsigned short)sample;
} while(--numbytes);
SkipLoop:
// Put local vars back
info->dwSampleIndex = (unsigned long)fastindex;
info->dwPredicted = sample;
return(numbytes << 2);
}
}