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