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godotengine
GitHub Repository: godotengine/godot
 Path: blob/master/thirdparty/libtheora/huffman.h
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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) 2002-2009                *

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 * by the Xiph.Org Foundation and contributors                      *

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 * https://www.xiph.org/                                            *

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 *                                                                  *

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 ********************************************************************

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  function:

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 ********************************************************************/

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#if !defined(_huffman_H)

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# define _huffman_H (1)

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# include "theora/codec.h"

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# include "ocintrin.h"

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/*The range of valid quantized DCT coefficient values.

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  VP3 used 511 in the encoder, but the bitstream is capable of 580.*/

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#define OC_DCT_VAL_RANGE         (580)

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#define OC_NDCT_TOKEN_BITS       (5)

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#define OC_DCT_EOB1_TOKEN        (0)

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#define OC_DCT_EOB2_TOKEN        (1)

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#define OC_DCT_EOB3_TOKEN        (2)

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#define OC_DCT_REPEAT_RUN0_TOKEN (3)

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#define OC_DCT_REPEAT_RUN1_TOKEN (4)

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#define OC_DCT_REPEAT_RUN2_TOKEN (5)

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#define OC_DCT_REPEAT_RUN3_TOKEN (6)

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#define OC_DCT_SHORT_ZRL_TOKEN   (7)

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#define OC_DCT_ZRL_TOKEN         (8)

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#define OC_ONE_TOKEN             (9)

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#define OC_MINUS_ONE_TOKEN       (10)

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#define OC_TWO_TOKEN             (11)

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#define OC_MINUS_TWO_TOKEN       (12)

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#define OC_DCT_VAL_CAT2          (13)

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#define OC_DCT_VAL_CAT3          (17)

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#define OC_DCT_VAL_CAT4          (18)

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#define OC_DCT_VAL_CAT5          (19)

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#define OC_DCT_VAL_CAT6          (20)

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#define OC_DCT_VAL_CAT7          (21)

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#define OC_DCT_VAL_CAT8          (22)

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#define OC_DCT_RUN_CAT1A         (23)

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#define OC_DCT_RUN_CAT1B         (28)

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#define OC_DCT_RUN_CAT1C         (29)

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#define OC_DCT_RUN_CAT2A         (30)

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#define OC_DCT_RUN_CAT2B         (31)

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#define OC_NDCT_EOB_TOKEN_MAX    (7)

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#define OC_NDCT_ZRL_TOKEN_MAX    (9)

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#define OC_NDCT_VAL_MAX          (23)

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#define OC_NDCT_VAL_CAT1_MAX     (13)

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#define OC_NDCT_VAL_CAT2_MAX     (17)

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#define OC_NDCT_VAL_CAT2_SIZE    (OC_NDCT_VAL_CAT2_MAX-OC_DCT_VAL_CAT2)

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#define OC_NDCT_RUN_MAX          (32)

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#define OC_NDCT_RUN_CAT1A_MAX    (28)

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extern const unsigned char OC_DCT_TOKEN_EXTRA_BITS[TH_NDCT_TOKENS];

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#endif

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