64 lines
1.3 KiB
C
Executable File
64 lines
1.3 KiB
C
Executable File
#include "multivoc.h"
|
|
#include "_multivc.h"
|
|
|
|
void MV_16BitReverb( const char *src, char *dest, const VOLUME16 *volume, int count )
|
|
{
|
|
int i;
|
|
|
|
short *pdest = (short *)dest;
|
|
|
|
for (i = 0; i < count; i++) {
|
|
#if PLATFORM_BIGENDIAN
|
|
int sl = src[i*2+1];
|
|
int sh = src[i*2+0] ^ 0x80;
|
|
#else
|
|
int sl = src[i*2+0];
|
|
int sh = src[i*2+1] ^ 0x80;
|
|
#endif
|
|
|
|
sl = (*volume)[sl] >> 8;
|
|
sh = (*volume)[sh];
|
|
|
|
pdest[i] = (short)(sl + sh + 0x80);
|
|
}
|
|
}
|
|
|
|
void MV_8BitReverb( const signed char *src, signed char *dest, const VOLUME16 *volume, int count )
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < count; i++) {
|
|
unsigned char s = (unsigned char) src[i];
|
|
|
|
s = (*volume)[s] & 0xff;
|
|
|
|
dest[i] = (char)(s + 0x80);
|
|
}
|
|
}
|
|
|
|
void MV_16BitReverbFast( const char *src, char *dest, int count, int shift )
|
|
{
|
|
int i;
|
|
|
|
short *pdest = (short *)dest;
|
|
const short *psrc = (const short *)src;
|
|
|
|
for (i = 0; i < count; i++) {
|
|
pdest[i] = psrc[i] >> shift;
|
|
}
|
|
}
|
|
|
|
void MV_8BitReverbFast( const signed char *src, signed char *dest, int count, int shift )
|
|
{
|
|
int i;
|
|
|
|
unsigned char sh = 0x80 - (0x80 >> shift);
|
|
|
|
for (i = 0; i < count; i++) {
|
|
unsigned char a = ((unsigned char) src[i]) >> shift;
|
|
unsigned char c = (((unsigned char) src[i]) ^ 0x80) >> 7;
|
|
|
|
dest[i] = (signed char) (a + sh + c);
|
|
}
|
|
}
|