From 8e94244f86e657e4113e35438e59cf5771882b25 Mon Sep 17 00:00:00 2001
From: Aki <please@ignore.pl>
Date: Sun, 3 Mar 2024 12:51:03 +0100
Subject: libogg and libvorbis are no longer part of this source tree

---
 contrib/vorbis/vq/bookutil.c | 476 -------------------------------------------
 1 file changed, 476 deletions(-)
 delete mode 100644 contrib/vorbis/vq/bookutil.c

(limited to 'contrib/vorbis/vq/bookutil.c')

diff --git a/contrib/vorbis/vq/bookutil.c b/contrib/vorbis/vq/bookutil.c
deleted file mode 100644
index 3046410..0000000
--- a/contrib/vorbis/vq/bookutil.c
+++ /dev/null
@@ -1,476 +0,0 @@
-/********************************************************************
- *                                                                  *
- * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE.   *
- * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS     *
- * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
- * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING.       *
- *                                                                  *
- * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2014             *
- * by the Xiph.Org Foundation http://www.xiph.org/                  *
- *                                                                  *
- ********************************************************************
-
- function: utility functions for loading .vqh and .vqd files
-
- ********************************************************************/
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <math.h>
-#include <string.h>
-#include <errno.h>
-#include "bookutil.h"
-
-int _best(codebook *book, float *a, int step){
-
-  int dim=book->dim;
-  int i,j,o;
-  int minval=book->minval;
-  int del=book->delta;
-  int qv=book->quantvals;
-  int ze=(qv>>1);
-  int index=0;
-  /* assumes integer/centered encoder codebook maptype 1 no more than dim 8 */
-
-  if(del!=1){
-    for(i=0,o=step*(dim-1);i<dim;i++,o-=step){
-      int v = ((int)rint(a[o])-minval+(del>>1))/del;
-      int m = (v<ze ? ((ze-v)<<1)-1 : ((v-ze)<<1));
-      index = index*qv+ (m<0?0:(m>=qv?qv-1:m));
-    }
-  }else{
-    for(i=0,o=step*(dim-1);i<dim;i++,o-=step){
-      int v = (int)rint(a[o])-minval;
-      int m = (v<ze ? ((ze-v)<<1)-1 : ((v-ze)<<1));
-      index = index*qv+ (m<0?0:(m>=qv?qv-1:m));
-    }
-  }
-
-  if(book->c->lengthlist[index]<=0){
-    const static_codebook *c=book->c;
-    int best=-1;
-    /* assumes integer/centered encoder codebook maptype 1 no more than dim 8 */
-    int e[8]={0,0,0,0,0,0,0,0};
-    int maxval = book->minval + book->delta*(book->quantvals-1);
-    for(i=0;i<book->entries;i++){
-      if(c->lengthlist[i]>0){
-        float this=0;
-        for(j=0;j<dim;j++){
-          float val=(e[j]-a[j*step]);
-          this+=val*val;
-        }
-        if(best==-1 || this<best){
-          best=this;
-          index=i;
-        }
-      }
-      /* assumes the value patterning created by the tools in vq/ */
-      j=0;
-      while(e[j]>=maxval)
-        e[j++]=0;
-      if(e[j]>=0)
-        e[j]+=book->delta;
-      e[j]= -e[j];
-    }
-  }
-
-  return index;
-}
-
-/* A few little utils for reading files */
-/* read a line.  Use global, persistent buffering */
-static char *linebuffer=NULL;
-static int  lbufsize=0;
-char *get_line(FILE *in){
-  long sofar=0;
-  if(feof(in))return NULL;
-
-  while(1){
-    int gotline=0;
-
-    while(!gotline){
-      if(sofar+1>=lbufsize){
-        if(!lbufsize){
-          lbufsize=1024;
-          linebuffer=_ogg_malloc(lbufsize);
-        }else{
-          lbufsize*=2;
-          linebuffer=_ogg_realloc(linebuffer,lbufsize);
-        }
-      }
-      {
-        long c=fgetc(in);
-        switch(c){
-        case EOF:
-          if(sofar==0)return(NULL);
-          /* fallthrough correct */
-        case '\n':
-          linebuffer[sofar]='\0';
-          gotline=1;
-          break;
-        default:
-          linebuffer[sofar++]=c;
-          linebuffer[sofar]='\0';
-          break;
-        }
-      }
-    }
-
-    if(linebuffer[0]=='#'){
-      sofar=0;
-    }else{
-      return(linebuffer);
-    }
-  }
-}
-
-/* read the next numerical value from the given file */
-static char *value_line_buff=NULL;
-
-int get_line_value(FILE *in,float *value){
-  char *next;
-
-  if(!value_line_buff)return(-1);
-
-  *value=strtod(value_line_buff, &next);
-  if(next==value_line_buff){
-    value_line_buff=NULL;
-    return(-1);
-  }else{
-    value_line_buff=next;
-    while(*value_line_buff>44)value_line_buff++;
-    if(*value_line_buff==44)value_line_buff++;
-    return(0);
-  }
-}
-
-int get_next_value(FILE *in,float *value){
-  while(1){
-    if(get_line_value(in,value)){
-      value_line_buff=get_line(in);
-      if(!value_line_buff)return(-1);
-    }else{
-      return(0);
-    }
-  }
-}
-
-int get_next_ivalue(FILE *in,long *ivalue){
-  float value;
-  int ret=get_next_value(in,&value);
-  *ivalue=value;
-  return(ret);
-}
-
-static float sequence_base=0.f;
-static int v_sofar=0;
-void reset_next_value(void){
-  value_line_buff=NULL;
-  sequence_base=0.f;
-  v_sofar=0;
-}
-
-char *setup_line(FILE *in){
-  reset_next_value();
-  value_line_buff=get_line(in);
-  return(value_line_buff);
-}
-
-
-int get_vector(codebook *b,FILE *in,int start, int n,float *a){
-  int i;
-  const static_codebook *c=b->c;
-
-  while(1){
-
-    if(v_sofar==n || get_line_value(in,a)){
-      reset_next_value();
-      if(get_next_value(in,a))
-        break;
-      for(i=0;i<start;i++){
-        sequence_base=*a;
-        get_line_value(in,a);
-      }
-    }
-
-    for(i=1;i<c->dim;i++)
-      if(get_line_value(in,a+i))
-        break;
-
-    if(i==c->dim){
-      float temp=a[c->dim-1];
-      for(i=0;i<c->dim;i++)a[i]-=sequence_base;
-      if(c->q_sequencep)sequence_base=temp;
-      v_sofar++;
-      return(0);
-    }
-    sequence_base=0.f;
-  }
-
-  return(-1);
-}
-
-/* read lines fromt he beginning until we find one containing the
-   specified string */
-char *find_seek_to(FILE *in,char *s){
-  rewind(in);
-  while(1){
-    char *line=get_line(in);
-    if(line){
-      if(strstr(line,s))
-        return(line);
-    }else
-      return(NULL);
-  }
-}
-
-
-/* this reads the format as written by vqbuild/latticebuild; innocent
-   (legal) tweaking of the file that would not affect its valid
-   header-ness will break this routine */
-
-codebook *codebook_load(char *filename){
-  codebook *b=_ogg_calloc(1,sizeof(codebook));
-  static_codebook *c=(static_codebook *)(b->c=_ogg_calloc(1,sizeof(static_codebook)));
-  int quant_to_read=0;
-  FILE *in=fopen(filename,"r");
-  char *line;
-  long i;
-
-  if(in==NULL){
-    fprintf(stderr,"Couldn't open codebook %s\n",filename);
-    exit(1);
-  }
-
-  /* find the codebook struct */
-  find_seek_to(in,"static const static_codebook ");
-
-  /* get the major important values */
-  line=get_line(in);
-  if(sscanf(line,"%ld, %ld,",
-            &(c->dim),&(c->entries))!=2){
-    fprintf(stderr,"1: syntax in %s in line:\t %s",filename,line);
-    exit(1);
-  }
-  line=get_line(in);
-  line=get_line(in);
-  if(sscanf(line,"%d, %ld, %ld, %d, %d,",
-            &(c->maptype),&(c->q_min),&(c->q_delta),&(c->q_quant),
-            &(c->q_sequencep))!=5){
-    fprintf(stderr,"1: syntax in %s in line:\t %s",filename,line);
-    exit(1);
-  }
-
-  switch(c->maptype){
-  case 0:
-    quant_to_read=0;
-    break;
-  case 1:
-    quant_to_read=_book_maptype1_quantvals(c);
-    break;
-  case 2:
-    quant_to_read=c->entries*c->dim;
-    break;
-  }
-
-  /* load the quantized entries */
-  find_seek_to(in,"static const long _vq_quantlist_");
-  reset_next_value();
-  c->quantlist=_ogg_malloc(sizeof(long)*quant_to_read);
-  for(i=0;i<quant_to_read;i++)
-    if(get_next_ivalue(in,c->quantlist+i)){
-      fprintf(stderr,"out of data while reading codebook %s\n",filename);
-      exit(1);
-    }
-
-  /* load the lengthlist */
-  find_seek_to(in,"_lengthlist");
-  reset_next_value();
-  c->lengthlist=_ogg_malloc(sizeof(long)*c->entries);
-  for(i=0;i<c->entries;i++)
-    if(get_next_ivalue(in,c->lengthlist+i)){
-      fprintf(stderr,"out of data while reading codebook %s\n",filename);
-      exit(1);
-    }
-
-  /* got it all */
-  fclose(in);
-
-  vorbis_book_init_encode(b,c);
-  b->valuelist=_book_unquantize(c,c->entries,NULL);
-
-  return(b);
-}
-
-void spinnit(char *s,int n){
-  static int p=0;
-  static long lasttime=0;
-  long test;
-  struct timeval thistime;
-
-  gettimeofday(&thistime,NULL);
-  test=thistime.tv_sec*10+thistime.tv_usec/100000;
-  if(lasttime!=test){
-    lasttime=test;
-
-    fprintf(stderr,"%s%d ",s,n);
-
-    p++;if(p>3)p=0;
-    switch(p){
-    case 0:
-      fprintf(stderr,"|    \r");
-      break;
-    case 1:
-      fprintf(stderr,"/    \r");
-      break;
-    case 2:
-      fprintf(stderr,"-    \r");
-      break;
-    case 3:
-      fprintf(stderr,"\\    \r");
-      break;
-    }
-    fflush(stderr);
-  }
-}
-
-void build_tree_from_lengths(int vals, long *hist, long *lengths){
-  int i,j;
-  long *membership=_ogg_malloc(vals*sizeof(long));
-  long *histsave=alloca(vals*sizeof(long));
-  memcpy(histsave,hist,vals*sizeof(long));
-
-  for(i=0;i<vals;i++)membership[i]=i;
-
-  /* find codeword lengths */
-  /* much more elegant means exist.  Brute force n^2, minimum thought */
-  for(i=vals;i>1;i--){
-    int first=-1,second=-1;
-    long least=-1;
-
-    spinnit("building... ",i);
-
-    /* find the two nodes to join */
-    for(j=0;j<vals;j++)
-      if(least==-1 || hist[j]<=least){
-        least=hist[j];
-        first=membership[j];
-      }
-    least=-1;
-    for(j=0;j<vals;j++)
-      if((least==-1 || hist[j]<=least) && membership[j]!=first){
-        least=hist[j];
-        second=membership[j];
-      }
-    if(first==-1 || second==-1){
-      fprintf(stderr,"huffman fault; no free branch\n");
-      exit(1);
-    }
-
-    /* join them */
-    least=hist[first]+hist[second];
-    for(j=0;j<vals;j++)
-      if(membership[j]==first || membership[j]==second){
-        membership[j]=first;
-        hist[j]=least;
-        lengths[j]++;
-      }
-  }
-  for(i=0;i<vals-1;i++)
-    if(membership[i]!=membership[i+1]){
-      fprintf(stderr,"huffman fault; failed to build single tree\n");
-      exit(1);
-    }
-
-  /* for sanity check purposes: how many bits would it have taken to
-     encode the training set? */
-  {
-    long bitsum=0;
-    long samples=0;
-    for(i=0;i<vals;i++){
-      bitsum+=(histsave[i]-1)*lengths[i];
-      samples+=histsave[i]-1;
-    }
-
-    if(samples){
-      fprintf(stderr,"\rTotal samples in training set: %ld      \n",samples);
-      fprintf(stderr,"\rTotal bits used to represent training set: %ld\n",
-              bitsum);
-    }
-  }
-
-  free(membership);
-}
-
-/* wrap build_tree_from_lengths to allow zero entries in the histogram */
-void build_tree_from_lengths0(int vals, long *hist, long *lengths){
-
-  /* pack the 'sparse' hit list into a dense list, then unpack
-     the lengths after the build */
-
-  int upper=0,i;
-  long *lengthlist=_ogg_calloc(vals,sizeof(long));
-  long *newhist=alloca(vals*sizeof(long));
-
-  for(i=0;i<vals;i++)
-    if(hist[i]>0)
-      newhist[upper++]=hist[i];
-
-  if(upper != vals){
-    fprintf(stderr,"\rEliminating %d unused entries; %d entries remain\n",
-            vals-upper,upper);
-  }
-
-  build_tree_from_lengths(upper,newhist,lengthlist);
-
-  upper=0;
-  for(i=0;i<vals;i++)
-    if(hist[i]>0)
-      lengths[i]=lengthlist[upper++];
-    else
-      lengths[i]=0;
-
-  free(lengthlist);
-}
-
-void write_codebook(FILE *out,char *name,const static_codebook *c){
-  int i,j,k;
-
-  /* save the book in C header form */
-
-  /* first, the static vectors, then the book structure to tie it together. */
-  /* quantlist */
-  if(c->quantlist){
-    long vals=(c->maptype==1?_book_maptype1_quantvals(c):c->entries*c->dim);
-    fprintf(out,"static const long _vq_quantlist_%s[] = {\n",name);
-    for(j=0;j<vals;j++){
-      fprintf(out,"\t%ld,\n",c->quantlist[j]);
-    }
-    fprintf(out,"};\n\n");
-  }
-
-  /* lengthlist */
-  fprintf(out,"static const char _vq_lengthlist_%s[] = {\n",name);
-  for(j=0;j<c->entries;){
-    fprintf(out,"\t");
-    for(k=0;k<16 && j<c->entries;k++,j++)
-      fprintf(out,"%2ld,",c->lengthlist[j]);
-    fprintf(out,"\n");
-  }
-  fprintf(out,"};\n\n");
-
-  /* tie it all together */
-
-  fprintf(out,"static const static_codebook %s = {\n",name);
-
-  fprintf(out,"\t%ld, %ld,\n",c->dim,c->entries);
-  fprintf(out,"\t(char *)_vq_lengthlist_%s,\n",name);
-  fprintf(out,"\t%d, %ld, %ld, %d, %d,\n",
-          c->maptype,c->q_min,c->q_delta,c->q_quant,c->q_sequencep);
-  if(c->quantlist)
-    fprintf(out,"\t(long *)_vq_quantlist_%s,\n",name);
-  else
-    fprintf(out,"\tNULL,\n");
-
-  fprintf(out,"\t0\n};\n\n");
-}
-- 
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