media/libtheora/lib/dec/quant.h

   1 /********************************************************************
   2  *                                                                  *
   3  * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE.   *
   4  * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS     *
   5  * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
   6  * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING.       *
   7  *                                                                  *
   8  * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2007                *
   9  * by the Xiph.Org Foundation http://www.xiph.org/                  *
  10  *                                                                  *
  11  ********************************************************************
  12
  13   function:
  14     last mod: $Id: quant.h 14059 2007-10-28 23:43:27Z xiphmont $
  15
  16  ********************************************************************/
  17
  18 #if !defined(_quant_H)
  19 # define _quant_H (1)
  20 # include "theora/codec.h"
  21 # include "ocintrin.h"
  22
  23 typedef ogg_uint16_t   oc_quant_table[64];
  24 typedef oc_quant_table oc_quant_tables[64];
  25
  26
  27
  28 /*Maximum scaled quantizer value.*/
  29 #define OC_QUANT_MAX          (1024<<2)
  30
  31
  32
  33 /*Minimum scaled DC coefficient frame quantizer value for intra and inter
  34    modes.*/
  35 extern unsigned OC_DC_QUANT_MIN[2];
  36 /*Minimum scaled AC coefficient frame quantizer value for intra and inter
  37    modes.*/
  38 extern unsigned OC_AC_QUANT_MIN[2];
  39
  40
  41
  42 void oc_dequant_tables_init(oc_quant_table *_dequant[2][3],
  43                             int _pp_dc_scale[64],
  44                             const th_quant_info *_qinfo);
  45
  46 #endif