--- a/misc/libtremor/info.c	Wed Nov 23 20:12:16 2011 +0300
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,356 +0,0 @@
-/********************************************************************
- *                                                                  *
- * THIS FILE IS PART OF THE OggVorbis 'TREMOR' 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 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2003    *
- * BY THE Xiph.Org FOUNDATION http://www.xiph.org/                  *
- *                                                                  *
- ********************************************************************
-
- function: maintain the info structure, info <-> header packets
-
- ********************************************************************/
-
-/* general handling of the header and the vorbis_info structure (and
-   substructures) */
-
-#include <stdlib.h>
-#include <string.h>
-#include <ctype.h>
-#include "ogg.h"
-#include "ivorbiscodec.h"
-#include "codec_internal.h"
-#include "codebook.h"
-#include "registry.h"
-#include "window.h"
-#include "misc.h"
-
-/* helpers */
-static void _v_readstring(oggpack_buffer *o,char *buf,int bytes){
-  while(bytes--){
-    *buf++=oggpack_read(o,8);
-  }
-}
-
-void vorbis_comment_init(vorbis_comment *vc){
-  memset(vc,0,sizeof(*vc));
-}
-
-/* This is more or less the same as strncasecmp - but that doesn't exist
- * everywhere, and this is a fairly trivial function, so we include it */
-static int tagcompare(const char *s1, const char *s2, int n){
-  int c=0;
-  while(c < n){
-    if(toupper(s1[c]) != toupper(s2[c]))
-      return !0;
-    c++;
-  }
-  return 0;
-}
-
-char *vorbis_comment_query(vorbis_comment *vc, char *tag, int count){
-  long i;
-  int found = 0;
-  int taglen = strlen(tag)+1; /* +1 for the = we append */
-  char *fulltag = (char *)alloca(taglen+ 1);
-
-  strcpy(fulltag, tag);
-  strcat(fulltag, "=");
-  
-  for(i=0;i<vc->comments;i++){
-    if(!tagcompare(vc->user_comments[i], fulltag, taglen)){
-      if(count == found)
-	/* We return a pointer to the data, not a copy */
-      	return vc->user_comments[i] + taglen;
-      else
-	found++;
-    }
-  }
-  return NULL; /* didn't find anything */
-}
-
-int vorbis_comment_query_count(vorbis_comment *vc, char *tag){
-  int i,count=0;
-  int taglen = strlen(tag)+1; /* +1 for the = we append */
-  char *fulltag = (char *)alloca(taglen+1);
-  strcpy(fulltag,tag);
-  strcat(fulltag, "=");
-
-  for(i=0;i<vc->comments;i++){
-    if(!tagcompare(vc->user_comments[i], fulltag, taglen))
-      count++;
-  }
-
-  return count;
-}
-
-void vorbis_comment_clear(vorbis_comment *vc){
-  if(vc){
-    long i;
-    for(i=0;i<vc->comments;i++)
-      if(vc->user_comments[i])_ogg_free(vc->user_comments[i]);
-    if(vc->user_comments)_ogg_free(vc->user_comments);
-	if(vc->comment_lengths)_ogg_free(vc->comment_lengths);
-    if(vc->vendor)_ogg_free(vc->vendor);
-    memset(vc,0,sizeof(*vc));
-  }
-}
-
-/* blocksize 0 is guaranteed to be short, 1 is guarantted to be long.
-   They may be equal, but short will never ge greater than long */
-int vorbis_info_blocksize(vorbis_info *vi,int zo){
-  codec_setup_info *ci = (codec_setup_info *)vi->codec_setup;
-  return ci ? ci->blocksizes[zo] : -1;
-}
-
-/* used by synthesis, which has a full, alloced vi */
-void vorbis_info_init(vorbis_info *vi){
-  memset(vi,0,sizeof(*vi));
-  vi->codec_setup=(codec_setup_info *)_ogg_calloc(1,sizeof(codec_setup_info));
-}
-
-void vorbis_info_clear(vorbis_info *vi){
-  codec_setup_info     *ci=(codec_setup_info *)vi->codec_setup;
-  int i;
-
-  if(ci){
-
-    for(i=0;i<ci->modes;i++)
-      if(ci->mode_param[i])_ogg_free(ci->mode_param[i]);
-
-    for(i=0;i<ci->maps;i++) /* unpack does the range checking */
-      if(ci->map_param[i])
-	_mapping_P[ci->map_type[i]]->free_info(ci->map_param[i]);
-
-    for(i=0;i<ci->floors;i++) /* unpack does the range checking */
-      if(ci->floor_param[i])
-	_floor_P[ci->floor_type[i]]->free_info(ci->floor_param[i]);
-    
-    for(i=0;i<ci->residues;i++) /* unpack does the range checking */
-      if(ci->residue_param[i])
-	_residue_P[ci->residue_type[i]]->free_info(ci->residue_param[i]);
-
-    for(i=0;i<ci->books;i++){
-      if(ci->book_param[i]){
-	/* knows if the book was not alloced */
-	vorbis_staticbook_destroy(ci->book_param[i]);
-      }
-      if(ci->fullbooks)
-	vorbis_book_clear(ci->fullbooks+i);
-    }
-    if(ci->fullbooks)
-	_ogg_free(ci->fullbooks);
-    
-    _ogg_free(ci);
-  }
-
-  memset(vi,0,sizeof(*vi));
-}
-
-/* Header packing/unpacking ********************************************/
-
-static int _vorbis_unpack_info(vorbis_info *vi,oggpack_buffer *opb){
-  codec_setup_info     *ci=(codec_setup_info *)vi->codec_setup;
-  if(!ci)return(OV_EFAULT);
-
-  vi->version=oggpack_read(opb,32);
-  if(vi->version!=0)return(OV_EVERSION);
-
-  vi->channels=oggpack_read(opb,8);
-  vi->rate=oggpack_read(opb,32);
-
-  vi->bitrate_upper=oggpack_read(opb,32);
-  vi->bitrate_nominal=oggpack_read(opb,32);
-  vi->bitrate_lower=oggpack_read(opb,32);
-
-  ci->blocksizes[0]=1<<oggpack_read(opb,4);
-  ci->blocksizes[1]=1<<oggpack_read(opb,4);
-  
-  if(vi->rate<1)goto err_out;
-  if(vi->channels<1)goto err_out;
-  if(ci->blocksizes[0]<64)goto err_out; 
-  if(ci->blocksizes[1]<ci->blocksizes[0])goto err_out;
-  if(ci->blocksizes[1]>8192)goto err_out;
-  
-  if(oggpack_read(opb,1)!=1)goto err_out; /* EOP check */
-
-  return(0);
- err_out:
-  vorbis_info_clear(vi);
-  return(OV_EBADHEADER);
-}
-
-static int _vorbis_unpack_comment(vorbis_comment *vc,oggpack_buffer *opb){
-  int i;
-  int vendorlen=oggpack_read(opb,32);
-  if(vendorlen<0)goto err_out;
-  vc->vendor=(char *)_ogg_calloc(vendorlen+1,1);
-  _v_readstring(opb,vc->vendor,vendorlen);
-  vc->comments=oggpack_read(opb,32);
-  if(vc->comments<0)goto err_out;
-  vc->user_comments=(char **)_ogg_calloc(vc->comments+1,sizeof(*vc->user_comments));
-  vc->comment_lengths=(int *)_ogg_calloc(vc->comments+1, sizeof(*vc->comment_lengths));
-	    
-  for(i=0;i<vc->comments;i++){
-    int len=oggpack_read(opb,32);
-    if(len<0)goto err_out;
-	vc->comment_lengths[i]=len;
-    vc->user_comments[i]=(char *)_ogg_calloc(len+1,1);
-    _v_readstring(opb,vc->user_comments[i],len);
-  }	  
-  if(oggpack_read(opb,1)!=1)goto err_out; /* EOP check */
-
-  return(0);
- err_out:
-  vorbis_comment_clear(vc);
-  return(OV_EBADHEADER);
-}
-
-/* all of the real encoding details are here.  The modes, books,
-   everything */
-static int _vorbis_unpack_books(vorbis_info *vi,oggpack_buffer *opb){
-  codec_setup_info     *ci=(codec_setup_info *)vi->codec_setup;
-  int i;
-  if(!ci)return(OV_EFAULT);
-
-  /* codebooks */
-  ci->books=oggpack_read(opb,8)+1;
-  /*ci->book_param=_ogg_calloc(ci->books,sizeof(*ci->book_param));*/
-  for(i=0;i<ci->books;i++){
-    ci->book_param[i]=(static_codebook *)_ogg_calloc(1,sizeof(*ci->book_param[i]));
-    if(vorbis_staticbook_unpack(opb,ci->book_param[i]))goto err_out;
-  }
-
-  /* time backend settings */
-  ci->times=oggpack_read(opb,6)+1;
-  /*ci->time_type=_ogg_malloc(ci->times*sizeof(*ci->time_type));*/
-  /*ci->time_param=_ogg_calloc(ci->times,sizeof(void *));*/
-  for(i=0;i<ci->times;i++){
-    ci->time_type[i]=oggpack_read(opb,16);
-    if(ci->time_type[i]<0 || ci->time_type[i]>=VI_TIMEB)goto err_out;
-    /* ci->time_param[i]=_time_P[ci->time_type[i]]->unpack(vi,opb);
-       Vorbis I has no time backend */
-    /*if(!ci->time_param[i])goto err_out;*/
-  }
-
-  /* floor backend settings */
-  ci->floors=oggpack_read(opb,6)+1;
-  /*ci->floor_type=_ogg_malloc(ci->floors*sizeof(*ci->floor_type));*/
-  /*ci->floor_param=_ogg_calloc(ci->floors,sizeof(void *));*/
-  for(i=0;i<ci->floors;i++){
-    ci->floor_type[i]=oggpack_read(opb,16);
-    if(ci->floor_type[i]<0 || ci->floor_type[i]>=VI_FLOORB)goto err_out;
-    ci->floor_param[i]=_floor_P[ci->floor_type[i]]->unpack(vi,opb);
-    if(!ci->floor_param[i])goto err_out;
-  }
-
-  /* residue backend settings */
-  ci->residues=oggpack_read(opb,6)+1;
-  /*ci->residue_type=_ogg_malloc(ci->residues*sizeof(*ci->residue_type));*/
-  /*ci->residue_param=_ogg_calloc(ci->residues,sizeof(void *));*/
-  for(i=0;i<ci->residues;i++){
-    ci->residue_type[i]=oggpack_read(opb,16);
-    if(ci->residue_type[i]<0 || ci->residue_type[i]>=VI_RESB)goto err_out;
-    ci->residue_param[i]=_residue_P[ci->residue_type[i]]->unpack(vi,opb);
-    if(!ci->residue_param[i])goto err_out;
-  }
-
-  /* map backend settings */
-  ci->maps=oggpack_read(opb,6)+1;
-  /*ci->map_type=_ogg_malloc(ci->maps*sizeof(*ci->map_type));*/
-  /*ci->map_param=_ogg_calloc(ci->maps,sizeof(void *));*/
-  for(i=0;i<ci->maps;i++){
-    ci->map_type[i]=oggpack_read(opb,16);
-    if(ci->map_type[i]<0 || ci->map_type[i]>=VI_MAPB)goto err_out;
-    ci->map_param[i]=_mapping_P[ci->map_type[i]]->unpack(vi,opb);
-    if(!ci->map_param[i])goto err_out;
-  }
-  
-  /* mode settings */
-  ci->modes=oggpack_read(opb,6)+1;
-  /*vi->mode_param=_ogg_calloc(vi->modes,sizeof(void *));*/
-  for(i=0;i<ci->modes;i++){
-    ci->mode_param[i]=(vorbis_info_mode *)_ogg_calloc(1,sizeof(*ci->mode_param[i]));
-    ci->mode_param[i]->blockflag=oggpack_read(opb,1);
-    ci->mode_param[i]->windowtype=oggpack_read(opb,16);
-    ci->mode_param[i]->transformtype=oggpack_read(opb,16);
-    ci->mode_param[i]->mapping=oggpack_read(opb,8);
-
-    if(ci->mode_param[i]->windowtype>=VI_WINDOWB)goto err_out;
-    if(ci->mode_param[i]->transformtype>=VI_WINDOWB)goto err_out;
-    if(ci->mode_param[i]->mapping>=ci->maps)goto err_out;
-  }
-  
-  if(oggpack_read(opb,1)!=1)goto err_out; /* top level EOP check */
-
-  return(0);
- err_out:
-  vorbis_info_clear(vi);
-  return(OV_EBADHEADER);
-}
-
-/* The Vorbis header is in three packets; the initial small packet in
-   the first page that identifies basic parameters, a second packet
-   with bitstream comments and a third packet that holds the
-   codebook. */
-
-int vorbis_synthesis_headerin(vorbis_info *vi,vorbis_comment *vc,ogg_packet *op){
-  oggpack_buffer opb;
-  
-  if(op){
-    oggpack_readinit(&opb,op->packet);
-
-    /* Which of the three types of header is this? */
-    /* Also verify header-ness, vorbis */
-    {
-      char buffer[6];
-      int packtype=oggpack_read(&opb,8);
-      memset(buffer,0,6);
-      _v_readstring(&opb,buffer,6);
-      if(memcmp(buffer,"vorbis",6)){
-	/* not a vorbis header */
-	return(OV_ENOTVORBIS);
-      }
-      switch(packtype){
-      case 0x01: /* least significant *bit* is read first */
-	if(!op->b_o_s){
-	  /* Not the initial packet */
-	  return(OV_EBADHEADER);
-	}
-	if(vi->rate!=0){
-	  /* previously initialized info header */
-	  return(OV_EBADHEADER);
-	}
-
-	return(_vorbis_unpack_info(vi,&opb));
-
-      case 0x03: /* least significant *bit* is read first */
-	if(vi->rate==0){
-	  /* um... we didn't get the initial header */
-	  return(OV_EBADHEADER);
-	}
-
-	return(_vorbis_unpack_comment(vc,&opb));
-
-      case 0x05: /* least significant *bit* is read first */
-	if(vi->rate==0 || vc->vendor==NULL){
-	  /* um... we didn;t get the initial header or comments yet */
-	  return(OV_EBADHEADER);
-	}
-
-	return(_vorbis_unpack_books(vi,&opb));
-
-      default:
-	/* Not a valid vorbis header type */
-	return(OV_EBADHEADER);
-	break;
-      }
-    }
-  }
-  return(OV_EBADHEADER);
-}
-