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44 lines
1.7 KiB
C
44 lines
1.7 KiB
C
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/********************************************************************
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* *
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* THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
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* USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
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* GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
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* IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
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* *
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* THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2007 *
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* by the Xiph.Org Foundation http://www.xiph.org/ *
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* *
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********************************************************************
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function:
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last mod: $Id: enquant.h 13884 2007-09-22 08:38:10Z giles $
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********************************************************************/
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#if !defined(_enquant_H)
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# define _enquant_H (1)
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# include "quant.h"
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/*The amount to scale the forward quantizer value by.*/
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#define OC_FQUANT_SCALE ((ogg_uint32_t)1<<OC_FQUANT_SHIFT)
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/*The amount to add to the scaled forward quantizer for rounding.*/
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#define OC_FQUANT_ROUND (1<<OC_FQUANT_SHIFT-1)
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/*The amount to shift the resulting product by.*/
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#define OC_FQUANT_SHIFT (16)
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/*The default quantization parameters used by VP3.1.*/
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extern const th_quant_info TH_VP31_QUANT_INFO;
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/*Our default quantization parameters.*/
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extern const th_quant_info OC_DEF_QUANT_INFO[4];
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void oc_quant_params_pack(oggpack_buffer *_opb,
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const th_quant_info *_qinfo);
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void oc_enquant_tables_init(oc_quant_table *_dequant[2][3],
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oc_quant_table *_enquant[2][3],const th_quant_info *_qinfo);
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#endif
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