Add cmake as optional build system to Travis-CI configuration

[platform/upstream/libvorbis.git] / lib / codebook.h

diff --git a/lib/codebook.h b/lib/codebook.h
index f0ec923..6fe49d1 100644 (file)
--- a/lib/codebook.h
+++ b/lib/codebook.h
@@ -5,7 +5,7 @@
  * 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 1994-2009             *
+ * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2015             *
  * by the Xiph.Org Foundation http://www.xiph.org/                  *
  *                                                                  *
  ********************************************************************
@@ -34,14 +34,14 @@
 */
 
 typedef struct static_codebook{
-  long   dim;            /* codebook dimensions (elements per vector) */
-  long   entries;        /* codebook entries */
-  long  *lengthlist;     /* codeword lengths in bits */
+  long   dim;           /* codebook dimensions (elements per vector) */
+  long   entries;       /* codebook entries */
+  char  *lengthlist;    /* codeword lengths in bits */
 
   /* mapping ***************************************************************/
-  int    maptype;        /* 0=none
-                            1=implicitly populated values from map column
-                            2=listed arbitrary values */
+  int    maptype;       /* 0=none
+                           1=implicitly populated values from map column
+                           2=listed arbitrary values */
 
   /* The below does a linear, single monotonic sequence mapping. */
   long     q_min;       /* packed 32 bit float; quant value 0 maps to minval */
@@ -52,50 +52,9 @@ typedef struct static_codebook{
   long     *quantlist;  /* map == 1: (int)(entries^(1/dim)) element column map
                            map == 2: list of dim*entries quantized entry vals
                         */
-
-  /* encode helpers ********************************************************/
-  struct encode_aux_nearestmatch *nearest_tree;
-  struct encode_aux_threshmatch  *thresh_tree;
-  struct encode_aux_pigeonhole  *pigeon_tree;
-
   int allocedp;
 } static_codebook;
 
-/* this structures an arbitrary trained book to quickly find the
-   nearest cell match */
-typedef struct encode_aux_nearestmatch{
-  /* pre-calculated partitioning tree */
-  long   *ptr0;
-  long   *ptr1;
-
-  long   *p;         /* decision points (each is an entry) */
-  long   *q;         /* decision points (each is an entry) */
-  long   aux;        /* number of tree entries */
-  long   alloc;
-} encode_aux_nearestmatch;
-
-/* assumes a maptype of 1; encode side only, so that's OK */
-typedef struct encode_aux_threshmatch{
-  float *quantthresh;
-  long   *quantmap;
-  int     quantvals;
-  int     threshvals;
-} encode_aux_threshmatch;
-
-typedef struct encode_aux_pigeonhole{
-  float min;
-  float del;
-
-  int  mapentries;
-  int  quantvals;
-  long *pigeonmap;
-
-  long fittotal;
-  long *fitlist;
-  long *fitmap;
-  long *fitlength;
-} encode_aux_pigeonhole;
-
 typedef struct codebook{
   long dim;           /* codebook dimensions (elements per vector) */
   long entries;       /* codebook entries */
@@ -114,9 +73,12 @@ typedef struct codebook{
   int           dec_firsttablen;
   int           dec_maxlength;
 
+  /* The current encoder uses only centered, integer-only lattice books. */
+  int           quantvals;
+  int           minval;
+  int           delta;
 } codebook;
 
-extern void vorbis_staticbook_clear(static_codebook *b);
 extern void vorbis_staticbook_destroy(static_codebook *b);
 extern int vorbis_book_init_encode(codebook *dest,const static_codebook *source);
 extern int vorbis_book_init_decode(codebook *dest,const static_codebook *source);
@@ -127,7 +89,6 @@ extern float *_book_logdist(const static_codebook *b,float *vals);
 extern float _float32_unpack(long val);
 extern long   _float32_pack(float val);
 extern int  _best(codebook *book, float *a, int step);
-extern int _ilog(unsigned int v);
 extern long _book_maptype1_quantvals(const static_codebook *b);
 
 extern int vorbis_book_besterror(codebook *book,float *a,int step,int addmul);
@@ -137,12 +98,9 @@ extern long vorbis_book_codelen(codebook *book,int entry);
 
 
 extern int vorbis_staticbook_pack(const static_codebook *c,oggpack_buffer *b);
-extern int vorbis_staticbook_unpack(oggpack_buffer *b,static_codebook *c);
+extern static_codebook *vorbis_staticbook_unpack(oggpack_buffer *b);
 
 extern int vorbis_book_encode(codebook *book, int a, oggpack_buffer *b);
-extern int vorbis_book_errorv(codebook *book, float *a);
-extern int vorbis_book_encodev(codebook *book, int best,float *a,
-                               oggpack_buffer *b);
 
 extern long vorbis_book_decode(codebook *book, oggpack_buffer *b);
 extern long vorbis_book_decodevs_add(codebook *book, float *a,