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) 2002-2009 *
9 * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
10 * *
11 ********************************************************************
12
13 function:
14 last mod: $Id$
15
16 ********************************************************************/
17
18#if !defined(_huffman_H)
19# define _huffman_H (1)
20# include "theora/codec.h"
21# include "ocintrin.h"
22
23/*The range of valid quantized DCT coefficient values.
24 VP3 used 511 in the encoder, but the bitstream is capable of 580.*/
25#define OC_DCT_VAL_RANGE (580)
26
27#define OC_NDCT_TOKEN_BITS (5)
28
29#define OC_DCT_EOB1_TOKEN (0)
30#define OC_DCT_EOB2_TOKEN (1)
31#define OC_DCT_EOB3_TOKEN (2)
32#define OC_DCT_REPEAT_RUN0_TOKEN (3)
33#define OC_DCT_REPEAT_RUN1_TOKEN (4)
34#define OC_DCT_REPEAT_RUN2_TOKEN (5)
35#define OC_DCT_REPEAT_RUN3_TOKEN (6)
36
37#define OC_DCT_SHORT_ZRL_TOKEN (7)
38#define OC_DCT_ZRL_TOKEN (8)
39
40#define OC_ONE_TOKEN (9)
41#define OC_MINUS_ONE_TOKEN (10)
42#define OC_TWO_TOKEN (11)
43#define OC_MINUS_TWO_TOKEN (12)
44
45#define OC_DCT_VAL_CAT2 (13)
46#define OC_DCT_VAL_CAT3 (17)
47#define OC_DCT_VAL_CAT4 (18)
48#define OC_DCT_VAL_CAT5 (19)
49#define OC_DCT_VAL_CAT6 (20)
50#define OC_DCT_VAL_CAT7 (21)
51#define OC_DCT_VAL_CAT8 (22)
52
53#define OC_DCT_RUN_CAT1A (23)
54#define OC_DCT_RUN_CAT1B (28)
55#define OC_DCT_RUN_CAT1C (29)
56#define OC_DCT_RUN_CAT2A (30)
57#define OC_DCT_RUN_CAT2B (31)
58
59#define OC_NDCT_EOB_TOKEN_MAX (7)
60#define OC_NDCT_ZRL_TOKEN_MAX (9)
61#define OC_NDCT_VAL_MAX (23)
62#define OC_NDCT_VAL_CAT1_MAX (13)
63#define OC_NDCT_VAL_CAT2_MAX (17)
64#define OC_NDCT_VAL_CAT2_SIZE (OC_NDCT_VAL_CAT2_MAX-OC_DCT_VAL_CAT2)
65#define OC_NDCT_RUN_MAX (32)
66#define OC_NDCT_RUN_CAT1A_MAX (28)
67
68extern const unsigned char OC_DCT_TOKEN_EXTRA_BITS[TH_NDCT_TOKENS];
69
70#endif
71