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Diffstat (limited to 'ioq3-r437/src/client/snd_wavelet.c')
-rw-r--r--ioq3-r437/src/client/snd_wavelet.c253
1 files changed, 0 insertions, 253 deletions
diff --git a/ioq3-r437/src/client/snd_wavelet.c b/ioq3-r437/src/client/snd_wavelet.c
deleted file mode 100644
index 41b5723a..00000000
--- a/ioq3-r437/src/client/snd_wavelet.c
+++ /dev/null
@@ -1,253 +0,0 @@
-/*
-===========================================================================
-Copyright (C) 1999-2005 Id Software, Inc.
-
-This file is part of Quake III Arena source code.
-
-Quake III Arena source code 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 2 of the License,
-or (at your option) any later version.
-
-Quake III Arena source code 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 Quake III Arena source code; if not, write to the Free Software
-Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
-===========================================================================
-*/
-
-#include "snd_local.h"
-
-long myftol( float f );
-
-#define C0 0.4829629131445341
-#define C1 0.8365163037378079
-#define C2 0.2241438680420134
-#define C3 -0.1294095225512604
-
-void daub4(float b[], unsigned long n, int isign)
-{
- float wksp[4097];
- float *a=b-1; // numerical recipies so a[1] = b[0]
-
- unsigned long nh,nh1,i,j;
-
- if (n < 4) return;
-
- nh1=(nh=n >> 1)+1;
- if (isign >= 0) {
- for (i=1,j=1;j<=n-3;j+=2,i++) {
- wksp[i] = C0*a[j]+C1*a[j+1]+C2*a[j+2]+C3*a[j+3];
- wksp[i+nh] = C3*a[j]-C2*a[j+1]+C1*a[j+2]-C0*a[j+3];
- }
- wksp[i ] = C0*a[n-1]+C1*a[n]+C2*a[1]+C3*a[2];
- wksp[i+nh] = C3*a[n-1]-C2*a[n]+C1*a[1]-C0*a[2];
- } else {
- wksp[1] = C2*a[nh]+C1*a[n]+C0*a[1]+C3*a[nh1];
- wksp[2] = C3*a[nh]-C0*a[n]+C1*a[1]-C2*a[nh1];
- for (i=1,j=3;i<nh;i++) {
- wksp[j++] = C2*a[i]+C1*a[i+nh]+C0*a[i+1]+C3*a[i+nh1];
- wksp[j++] = C3*a[i]-C0*a[i+nh]+C1*a[i+1]-C2*a[i+nh1];
- }
- }
- for (i=1;i<=n;i++) {
- a[i]=wksp[i];
- }
-}
-
-void wt1(float a[], unsigned long n, int isign)
-{
- unsigned long nn;
- int inverseStartLength = n/4;
- if (n < inverseStartLength) return;
- if (isign >= 0) {
- for (nn=n;nn>=inverseStartLength;nn>>=1) daub4(a,nn,isign);
- } else {
- for (nn=inverseStartLength;nn<=n;nn<<=1) daub4(a,nn,isign);
- }
-}
-
-/* The number of bits required by each value */
-static unsigned char numBits[] = {
- 0,1,2,2,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
- 6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
- 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
- 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
- 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
- 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
- 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
- 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
-};
-
-byte MuLawEncode(short s) {
- unsigned long adjusted;
- byte sign, exponent, mantissa;
-
- sign = (s<0)?0:0x80;
-
- if (s<0) s=-s;
- adjusted = (long)s << (16-sizeof(short)*8);
- adjusted += 128L + 4L;
- if (adjusted > 32767) adjusted = 32767;
- exponent = numBits[(adjusted>>7)&0xff] - 1;
- mantissa = (adjusted>>(exponent+3))&0xf;
- return ~(sign | (exponent<<4) | mantissa);
-}
-
-short MuLawDecode(byte uLaw) {
- signed long adjusted;
- byte exponent, mantissa;
-
- uLaw = ~uLaw;
- exponent = (uLaw>>4) & 0x7;
- mantissa = (uLaw&0xf) + 16;
- adjusted = (mantissa << (exponent +3)) - 128 - 4;
-
- return (uLaw & 0x80)? adjusted : -adjusted;
-}
-
-short mulawToShort[256];
-static qboolean madeTable = qfalse;
-
-static int NXStreamCount;
-
-void NXPutc(NXStream *stream, char out) {
- stream[NXStreamCount++] = out;
-}
-
-
-void encodeWavelet( sfx_t *sfx, short *packets) {
- float wksp[4097], temp;
- int i, samples, size;
- sndBuffer *newchunk, *chunk;
- byte *out;
-
- if (!madeTable) {
- for (i=0;i<256;i++) {
- mulawToShort[i] = (float)MuLawDecode((byte)i);
- }
- madeTable = qtrue;
- }
- chunk = NULL;
-
- samples = sfx->soundLength;
- while(samples>0) {
- size = samples;
- if (size>(SND_CHUNK_SIZE*2)) {
- size = (SND_CHUNK_SIZE*2);
- }
-
- if (size<4) {
- size = 4;
- }
-
- newchunk = SND_malloc();
- if (sfx->soundData == NULL) {
- sfx->soundData = newchunk;
- } else {
- chunk->next = newchunk;
- }
- chunk = newchunk;
- for(i=0; i<size; i++) {
- wksp[i] = *packets;
- packets++;
- }
- wt1(wksp, size, 1);
- out = (byte *)chunk->sndChunk;
-
- for(i=0;i<size;i++) {
- temp = wksp[i];
- if (temp > 32767) temp = 32767; else if (temp<-32768) temp = -32768;
- out[i] = MuLawEncode((short)temp);
- }
-
- chunk->size = size;
- samples -= size;
- }
-}
-
-void decodeWavelet(sndBuffer *chunk, short *to) {
- float wksp[4097];
- int i;
- byte *out;
-
- int size = chunk->size;
-
- out = (byte *)chunk->sndChunk;
- for(i=0;i<size;i++) {
- wksp[i] = mulawToShort[out[i]];
- }
-
- wt1(wksp, size, -1);
-
- if (!to) return;
-
- for(i=0; i<size; i++) {
- to[i] = wksp[i];
- }
-}
-
-
-void encodeMuLaw( sfx_t *sfx, short *packets) {
- int i, samples, size, grade, poop;
- sndBuffer *newchunk, *chunk;
- byte *out;
-
- if (!madeTable) {
- for (i=0;i<256;i++) {
- mulawToShort[i] = (float)MuLawDecode((byte)i);
- }
- madeTable = qtrue;
- }
-
- chunk = NULL;
- samples = sfx->soundLength;
- grade = 0;
-
- while(samples>0) {
- size = samples;
- if (size>(SND_CHUNK_SIZE*2)) {
- size = (SND_CHUNK_SIZE*2);
- }
-
- newchunk = SND_malloc();
- if (sfx->soundData == NULL) {
- sfx->soundData = newchunk;
- } else {
- chunk->next = newchunk;
- }
- chunk = newchunk;
- out = (byte *)chunk->sndChunk;
- for(i=0; i<size; i++) {
- poop = packets[0]+grade;
- if (poop>32767) {
- poop = 32767;
- } else if (poop<-32768) {
- poop = -32768;
- }
- out[i] = MuLawEncode((short)poop);
- grade = poop - mulawToShort[out[i]];
- packets++;
- }
- chunk->size = size;
- samples -= size;
- }
-}
-
-void decodeMuLaw(sndBuffer *chunk, short *to) {
- int i;
- byte *out;
-
- int size = chunk->size;
-
- out = (byte *)chunk->sndChunk;
- for(i=0;i<size;i++) {
- to[i] = mulawToShort[out[i]];
- }
-}
-
-
generated by cgit (git 2.34.1) at 2025-04-03 01:23:46 +0000