1// Copyright 2015 Google Inc. All Rights Reserved.
2//
3// Use of this source code is governed by a BSD-style license
4// that can be found in the COPYING file in the root of the source
5// tree. An additional intellectual property rights grant can be found
6// in the file PATENTS. All contributing project authors may
7// be found in the AUTHORS file in the root of the source tree.
8// -----------------------------------------------------------------------------
9//
10// Definitions and macros common to encoding and decoding
11//
12// Author: Skal (pascal.massimino@gmail.com)
13
14#ifndef WEBP_DEC_COMMON_H_
15#define WEBP_DEC_COMMON_H_
16
17// intra prediction modes
18enum { B_DC_PRED = 0, // 4x4 modes
19 B_TM_PRED = 1,
20 B_VE_PRED = 2,
21 B_HE_PRED = 3,
22 B_RD_PRED = 4,
23 B_VR_PRED = 5,
24 B_LD_PRED = 6,
25 B_VL_PRED = 7,
26 B_HD_PRED = 8,
27 B_HU_PRED = 9,
28 NUM_BMODES = B_HU_PRED + 1 - B_DC_PRED, // = 10
29
30 // Luma16 or UV modes
31 DC_PRED = B_DC_PRED, V_PRED = B_VE_PRED,
32 H_PRED = B_HE_PRED, TM_PRED = B_TM_PRED,
33 B_PRED = NUM_BMODES, // refined I4x4 mode
34 NUM_PRED_MODES = 4,
35
36 // special modes
37 B_DC_PRED_NOTOP = 4,
38 B_DC_PRED_NOLEFT = 5,
39 B_DC_PRED_NOTOPLEFT = 6,
40 NUM_B_DC_MODES = 7 };
41
42enum { MB_FEATURE_TREE_PROBS = 3,
43 NUM_MB_SEGMENTS = 4,
44 NUM_REF_LF_DELTAS = 4,
45 NUM_MODE_LF_DELTAS = 4, // I4x4, ZERO, *, SPLIT
46 MAX_NUM_PARTITIONS = 8,
47 // Probabilities
48 NUM_TYPES = 4, // 0: i16-AC, 1: i16-DC, 2:chroma-AC, 3:i4-AC
49 NUM_BANDS = 8,
50 NUM_CTX = 3,
51 NUM_PROBAS = 11
52 };
53
54#endif // WEBP_DEC_COMMON_H_
55