1 /*
2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved.
3 *
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
9 */
10
11 #define USE_PREBUILT_TABLES
12
13 #include "entropymode.h"
14 #include "entropy.h"
15 #include "vpx_mem/vpx_mem.h"
16
17 #include "vp8_entropymodedata.h"
18
vp8_mv_cont(const int_mv * l,const int_mv * a)19 int vp8_mv_cont(const int_mv *l, const int_mv *a) {
20 int lez = (l->as_int == 0);
21 int aez = (a->as_int == 0);
22 int lea = (l->as_int == a->as_int);
23
24 if (lea && lez) return SUBMVREF_LEFT_ABOVE_ZED;
25
26 if (lea) return SUBMVREF_LEFT_ABOVE_SAME;
27
28 if (aez) return SUBMVREF_ABOVE_ZED;
29
30 if (lez) return SUBMVREF_LEFT_ZED;
31
32 return SUBMVREF_NORMAL;
33 }
34
35 static const vp8_prob sub_mv_ref_prob[VP8_SUBMVREFS - 1] = { 180, 162, 25 };
36
37 const vp8_prob vp8_sub_mv_ref_prob2[SUBMVREF_COUNT][VP8_SUBMVREFS - 1] = {
38 { 147, 136, 18 },
39 { 106, 145, 1 },
40 { 179, 121, 1 },
41 { 223, 1, 34 },
42 { 208, 1, 1 }
43 };
44
45 const vp8_mbsplit vp8_mbsplits[VP8_NUMMBSPLITS] = {
46 { 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1 },
47 { 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1 },
48 { 0, 0, 1, 1, 0, 0, 1, 1, 2, 2, 3, 3, 2, 2, 3, 3 },
49 { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 }
50 };
51
52 const int vp8_mbsplit_count[VP8_NUMMBSPLITS] = { 2, 2, 4, 16 };
53
54 const vp8_prob vp8_mbsplit_probs[VP8_NUMMBSPLITS - 1] = { 110, 111, 150 };
55
56 /* Array indices are identical to previously-existing INTRAMODECONTEXTNODES. */
57
58 const vp8_tree_index vp8_bmode_tree[18] = /* INTRAMODECONTEXTNODE value */
59 {
60 -B_DC_PRED, 2, /* 0 = DC_NODE */
61 -B_TM_PRED, 4, /* 1 = TM_NODE */
62 -B_VE_PRED, 6, /* 2 = VE_NODE */
63 8, 12, /* 3 = COM_NODE */
64 -B_HE_PRED, 10, /* 4 = HE_NODE */
65 -B_RD_PRED, -B_VR_PRED, /* 5 = RD_NODE */
66 -B_LD_PRED, 14, /* 6 = LD_NODE */
67 -B_VL_PRED, 16, /* 7 = VL_NODE */
68 -B_HD_PRED, -B_HU_PRED /* 8 = HD_NODE */
69 };
70
71 /* Again, these trees use the same probability indices as their
72 explicitly-programmed predecessors. */
73
74 const vp8_tree_index vp8_ymode_tree[8] = {
75 -DC_PRED, 2, 4, 6, -V_PRED, -H_PRED, -TM_PRED, -B_PRED
76 };
77
78 const vp8_tree_index vp8_kf_ymode_tree[8] = { -B_PRED, 2, 4,
79 6, -DC_PRED, -V_PRED,
80 -H_PRED, -TM_PRED };
81
82 const vp8_tree_index vp8_uv_mode_tree[6] = { -DC_PRED, 2, -V_PRED,
83 4, -H_PRED, -TM_PRED };
84
85 const vp8_tree_index vp8_mbsplit_tree[6] = { -3, 2, -2, 4, -0, -1 };
86
87 const vp8_tree_index vp8_mv_ref_tree[8] = { -ZEROMV, 2, -NEARESTMV, 4,
88 -NEARMV, 6, -NEWMV, -SPLITMV };
89
90 const vp8_tree_index vp8_sub_mv_ref_tree[6] = { -LEFT4X4, 2, -ABOVE4X4,
91 4, -ZERO4X4, -NEW4X4 };
92
93 const vp8_tree_index vp8_small_mvtree[14] = { 2, 8, 4, 6, -0, -1, -2,
94 -3, 10, 12, -4, -5, -6, -7 };
95
vp8_init_mbmode_probs(VP8_COMMON * x)96 void vp8_init_mbmode_probs(VP8_COMMON *x) {
97 memcpy(x->fc.ymode_prob, vp8_ymode_prob, sizeof(vp8_ymode_prob));
98 memcpy(x->fc.uv_mode_prob, vp8_uv_mode_prob, sizeof(vp8_uv_mode_prob));
99 memcpy(x->fc.sub_mv_ref_prob, sub_mv_ref_prob, sizeof(sub_mv_ref_prob));
100 }
101
vp8_default_bmode_probs(vp8_prob dest[VP8_BINTRAMODES-1])102 void vp8_default_bmode_probs(vp8_prob dest[VP8_BINTRAMODES - 1]) {
103 memcpy(dest, vp8_bmode_prob, sizeof(vp8_bmode_prob));
104 }
105