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1 | /* |
2 | * Chinese AVS video (AVS1-P2, JiZhun profile) decoder. | |
3 | * Copyright (c) 2006 Stefan Gehrer <stefan.gehrer@gmx.de> | |
4 | * | |
5 | * This file is part of FFmpeg. | |
6 | * | |
7 | * FFmpeg is free software; you can redistribute it and/or | |
8 | * modify it under the terms of the GNU Lesser General Public | |
9 | * License as published by the Free Software Foundation; either | |
10 | * version 2.1 of the License, or (at your option) any later version. | |
11 | * | |
12 | * FFmpeg is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * Lesser General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU Lesser General Public | |
18 | * License along with FFmpeg; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
21 | ||
22 | /** | |
23 | * @file | |
24 | * Chinese AVS video (AVS1-P2, JiZhun profile) decoder | |
25 | * @author Stefan Gehrer <stefan.gehrer@gmx.de> | |
26 | */ | |
27 | ||
28 | #include "libavutil/avassert.h" | |
29 | #include "avcodec.h" | |
30 | #include "get_bits.h" | |
31 | #include "golomb.h" | |
32 | #include "cavs.h" | |
33 | #include "internal.h" | |
34 | #include "mpeg12data.h" | |
35 | #include "mpegvideo.h" | |
36 | ||
37 | static const uint8_t mv_scan[4] = { | |
38 | MV_FWD_X0, MV_FWD_X1, | |
39 | MV_FWD_X2, MV_FWD_X3 | |
40 | }; | |
41 | ||
42 | static const uint8_t cbp_tab[64][2] = { | |
43 | { 63, 0 }, { 15, 15 }, { 31, 63 }, { 47, 31 }, { 0, 16 }, { 14, 32 }, { 13, 47 }, { 11, 13 }, | |
44 | { 7, 14 }, { 5, 11 }, { 10, 12 }, { 8, 5 }, { 12, 10 }, { 61, 7 }, { 4, 48 }, { 55, 3 }, | |
45 | { 1, 2 }, { 2, 8 }, { 59, 4 }, { 3, 1 }, { 62, 61 }, { 9, 55 }, { 6, 59 }, { 29, 62 }, | |
46 | { 45, 29 }, { 51, 27 }, { 23, 23 }, { 39, 19 }, { 27, 30 }, { 46, 28 }, { 53, 9 }, { 30, 6 }, | |
47 | { 43, 60 }, { 37, 21 }, { 60, 44 }, { 16, 26 }, { 21, 51 }, { 28, 35 }, { 19, 18 }, { 35, 20 }, | |
48 | { 42, 24 }, { 26, 53 }, { 44, 17 }, { 32, 37 }, { 58, 39 }, { 24, 45 }, { 20, 58 }, { 17, 43 }, | |
49 | { 18, 42 }, { 48, 46 }, { 22, 36 }, { 33, 33 }, { 25, 34 }, { 49, 40 }, { 40, 52 }, { 36, 49 }, | |
50 | { 34, 50 }, { 50, 56 }, { 52, 25 }, { 54, 22 }, { 41, 54 }, { 56, 57 }, { 38, 41 }, { 57, 38 } | |
51 | }; | |
52 | ||
53 | static const uint8_t scan3x3[4] = { 4, 5, 7, 8 }; | |
54 | ||
55 | static const uint8_t dequant_shift[64] = { | |
56 | 14, 14, 14, 14, 14, 14, 14, 14, | |
57 | 13, 13, 13, 13, 13, 13, 13, 13, | |
58 | 13, 12, 12, 12, 12, 12, 12, 12, | |
59 | 11, 11, 11, 11, 11, 11, 11, 11, | |
60 | 11, 10, 10, 10, 10, 10, 10, 10, | |
61 | 10, 9, 9, 9, 9, 9, 9, 9, | |
62 | 9, 8, 8, 8, 8, 8, 8, 8, | |
63 | 7, 7, 7, 7, 7, 7, 7, 7 | |
64 | }; | |
65 | ||
66 | static const uint16_t dequant_mul[64] = { | |
67 | 32768, 36061, 38968, 42495, 46341, 50535, 55437, 60424, | |
68 | 32932, 35734, 38968, 42495, 46177, 50535, 55109, 59933, | |
69 | 65535, 35734, 38968, 42577, 46341, 50617, 55027, 60097, | |
70 | 32809, 35734, 38968, 42454, 46382, 50576, 55109, 60056, | |
71 | 65535, 35734, 38968, 42495, 46320, 50515, 55109, 60076, | |
72 | 65535, 35744, 38968, 42495, 46341, 50535, 55099, 60087, | |
73 | 65535, 35734, 38973, 42500, 46341, 50535, 55109, 60097, | |
74 | 32771, 35734, 38965, 42497, 46341, 50535, 55109, 60099 | |
75 | }; | |
76 | ||
77 | #define EOB 0, 0, 0 | |
78 | ||
79 | static const struct dec_2dvlc intra_dec[7] = { | |
80 | { | |
81 | { //level / run / table_inc | |
82 | { 1, 1, 1 }, { -1, 1, 1 }, { 1, 2, 1 }, { -1, 2, 1 }, { 1, 3, 1 }, { -1, 3, 1 }, | |
83 | { 1, 4, 1 }, { -1, 4, 1 }, { 1, 5, 1 }, { -1, 5, 1 }, { 1, 6, 1 }, { -1, 6, 1 }, | |
84 | { 1, 7, 1 }, { -1, 7, 1 }, { 1, 8, 1 }, { -1, 8, 1 }, { 1, 9, 1 }, { -1, 9, 1 }, | |
85 | { 1, 10, 1 }, { -1, 10, 1 }, { 1, 11, 1 }, { -1, 11, 1 }, { 2, 1, 2 }, { -2, 1, 2 }, | |
86 | { 1, 12, 1 }, { -1, 12, 1 }, { 1, 13, 1 }, { -1, 13, 1 }, { 1, 14, 1 }, { -1, 14, 1 }, | |
87 | { 1, 15, 1 }, { -1, 15, 1 }, { 2, 2, 2 }, { -2, 2, 2 }, { 1, 16, 1 }, { -1, 16, 1 }, | |
88 | { 1, 17, 1 }, { -1, 17, 1 }, { 3, 1, 3 }, { -3, 1, 3 }, { 1, 18, 1 }, { -1, 18, 1 }, | |
89 | { 1, 19, 1 }, { -1, 19, 1 }, { 2, 3, 2 }, { -2, 3, 2 }, { 1, 20, 1 }, { -1, 20, 1 }, | |
90 | { 1, 21, 1 }, { -1, 21, 1 }, { 2, 4, 2 }, { -2, 4, 2 }, { 1, 22, 1 }, { -1, 22, 1 }, | |
91 | { 2, 5, 2 }, { -2, 5, 2 }, { 1, 23, 1 }, { -1, 23, 1 }, { EOB } | |
92 | }, | |
93 | //level_add | |
94 | { 0, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, -1, -1, -1 }, | |
95 | 2, //golomb_order | |
96 | 0, //inc_limit | |
97 | 23, //max_run | |
98 | }, | |
99 | { | |
100 | { //level / run | |
101 | { 1, 1, 0 }, { -1, 1, 0 }, { 1, 2, 0 }, { -1, 2, 0 }, { 2, 1, 1 }, { -2, 1, 1 }, | |
102 | { 1, 3, 0 }, { -1, 3, 0 }, { EOB }, { 1, 4, 0 }, { -1, 4, 0 }, { 1, 5, 0 }, | |
103 | { -1, 5, 0 }, { 1, 6, 0 }, { -1, 6, 0 }, { 3, 1, 2 }, { -3, 1, 2 }, { 2, 2, 1 }, | |
104 | { -2, 2, 1 }, { 1, 7, 0 }, { -1, 7, 0 }, { 1, 8, 0 }, { -1, 8, 0 }, { 1, 9, 0 }, | |
105 | { -1, 9, 0 }, { 2, 3, 1 }, { -2, 3, 1 }, { 4, 1, 2 }, { -4, 1, 2 }, { 1, 10, 0 }, | |
106 | { -1, 10, 0 }, { 1, 11, 0 }, { -1, 11, 0 }, { 2, 4, 1 }, { -2, 4, 1 }, { 3, 2, 2 }, | |
107 | { -3, 2, 2 }, { 1, 12, 0 }, { -1, 12, 0 }, { 2, 5, 1 }, { -2, 5, 1 }, { 5, 1, 3 }, | |
108 | { -5, 1, 3 }, { 1, 13, 0 }, { -1, 13, 0 }, { 2, 6, 1 }, { -2, 6, 1 }, { 1, 14, 0 }, | |
109 | { -1, 14, 0 }, { 2, 7, 1 }, { -2, 7, 1 }, { 2, 8, 1 }, { -2, 8, 1 }, { 3, 3, 2 }, | |
110 | { -3, 3, 2 }, { 6, 1, 3 }, { -6, 1, 3 }, { 1, 15, 0 }, { -1, 15, 0 } | |
111 | }, | |
112 | //level_add | |
113 | { 0, 7, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, | |
114 | 2, //golomb_order | |
115 | 1, //inc_limit | |
116 | 15, //max_run | |
117 | }, | |
118 | { | |
119 | { //level / run | |
120 | { 1, 1, 0 }, { -1, 1, 0 }, { 2, 1, 0 }, { -2, 1, 0 }, { 1, 2, 0 }, { -1, 2, 0 }, | |
121 | { 3, 1, 1 }, { -3, 1, 1 }, { EOB }, { 1, 3, 0 }, { -1, 3, 0 }, { 2, 2, 0 }, | |
122 | { -2, 2, 0 }, { 4, 1, 1 }, { -4, 1, 1 }, { 1, 4, 0 }, { -1, 4, 0 }, { 5, 1, 2 }, | |
123 | { -5, 1, 2 }, { 1, 5, 0 }, { -1, 5, 0 }, { 3, 2, 1 }, { -3, 2, 1 }, { 2, 3, 0 }, | |
124 | { -2, 3, 0 }, { 1, 6, 0 }, { -1, 6, 0 }, { 6, 1, 2 }, { -6, 1, 2 }, { 2, 4, 0 }, | |
125 | { -2, 4, 0 }, { 1, 7, 0 }, { -1, 7, 0 }, { 4, 2, 1 }, { -4, 2, 1 }, { 7, 1, 2 }, | |
126 | { -7, 1, 2 }, { 3, 3, 1 }, { -3, 3, 1 }, { 2, 5, 0 }, { -2, 5, 0 }, { 1, 8, 0 }, | |
127 | { -1, 8, 0 }, { 2, 6, 0 }, { -2, 6, 0 }, { 8, 1, 3 }, { -8, 1, 3 }, { 1, 9, 0 }, | |
128 | { -1, 9, 0 }, { 5, 2, 2 }, { -5, 2, 2 }, { 3, 4, 1 }, { -3, 4, 1 }, { 2, 7, 0 }, | |
129 | { -2, 7, 0 }, { 9, 1, 3 }, { -9, 1, 3 }, { 1, 10, 0 }, { -1, 10, 0 } | |
130 | }, | |
131 | //level_add | |
132 | { 0, 10, 6, 4, 4, 3, 3, 3, 2, 2, 2, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, | |
133 | 2, //golomb_order | |
134 | 2, //inc_limit | |
135 | 10, //max_run | |
136 | }, | |
137 | { | |
138 | { //level / run | |
139 | { 1, 1, 0 }, { -1, 1, 0 }, { 2, 1, 0 }, { -2, 1, 0 }, { 3, 1, 0 }, { -3, 1, 0 }, | |
140 | { 1, 2, 0 }, { -1, 2, 0 }, { EOB }, { 4, 1, 0 }, { -4, 1, 0 }, { 5, 1, 1 }, | |
141 | { -5, 1, 1 }, { 2, 2, 0 }, { -2, 2, 0 }, { 1, 3, 0 }, { -1, 3, 0 }, { 6, 1, 1 }, | |
142 | { -6, 1, 1 }, { 3, 2, 0 }, { -3, 2, 0 }, { 7, 1, 1 }, { -7, 1, 1 }, { 1, 4, 0 }, | |
143 | { -1, 4, 0 }, { 8, 1, 2 }, { -8, 1, 2 }, { 2, 3, 0 }, { -2, 3, 0 }, { 4, 2, 0 }, | |
144 | { -4, 2, 0 }, { 1, 5, 0 }, { -1, 5, 0 }, { 9, 1, 2 }, { -9, 1, 2 }, { 5, 2, 1 }, | |
145 | { -5, 2, 1 }, { 2, 4, 0 }, { -2, 4, 0 }, { 10, 1, 2 }, {-10, 1, 2 }, { 3, 3, 0 }, | |
146 | { -3, 3, 0 }, { 1, 6, 0 }, { -1, 6, 0 }, { 11, 1, 3 }, {-11, 1, 3 }, { 6, 2, 1 }, | |
147 | { -6, 2, 1 }, { 1, 7, 0 }, { -1, 7, 0 }, { 2, 5, 0 }, { -2, 5, 0 }, { 3, 4, 0 }, | |
148 | { -3, 4, 0 }, { 12, 1, 3 }, {-12, 1, 3 }, { 4, 3, 0 }, { -4, 3, 0 } | |
149 | }, | |
150 | //level_add | |
151 | { 0, 13, 7, 5, 4, 3, 2, 2, -1, -1, -1 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, | |
152 | 2, //golomb_order | |
153 | 4, //inc_limit | |
154 | 7, //max_run | |
155 | }, | |
156 | { | |
157 | { //level / run | |
158 | { 1, 1, 0 }, { -1, 1, 0 }, { 2, 1, 0 }, { -2, 1, 0 }, { 3, 1, 0 }, { -3, 1, 0 }, | |
159 | { EOB }, { 4, 1, 0 }, { -4, 1, 0 }, { 5, 1, 0 }, { -5, 1, 0 }, { 6, 1, 0 }, | |
160 | { -6, 1, 0 }, { 1, 2, 0 }, { -1, 2, 0 }, { 7, 1, 0 }, { -7, 1, 0 }, { 8, 1, 1 }, | |
161 | { -8, 1, 1 }, { 2, 2, 0 }, { -2, 2, 0 }, { 9, 1, 1 }, { -9, 1, 1 }, { 10, 1, 1 }, | |
162 | {-10, 1, 1 }, { 1, 3, 0 }, { -1, 3, 0 }, { 3, 2, 0 }, { -3, 2, 0 }, { 11, 1, 2 }, | |
163 | {-11, 1, 2 }, { 4, 2, 0 }, { -4, 2, 0 }, { 12, 1, 2 }, {-12, 1, 2 }, { 13, 1, 2 }, | |
164 | {-13, 1, 2 }, { 5, 2, 0 }, { -5, 2, 0 }, { 1, 4, 0 }, { -1, 4, 0 }, { 2, 3, 0 }, | |
165 | { -2, 3, 0 }, { 14, 1, 2 }, {-14, 1, 2 }, { 6, 2, 0 }, { -6, 2, 0 }, { 15, 1, 2 }, | |
166 | {-15, 1, 2 }, { 16, 1, 2 }, {-16, 1, 2 }, { 3, 3, 0 }, { -3, 3, 0 }, { 1, 5, 0 }, | |
167 | { -1, 5, 0 }, { 7, 2, 0 }, { -7, 2, 0 }, { 17, 1, 2 }, {-17, 1, 2 } | |
168 | }, | |
169 | //level_add | |
170 | { 0,18, 8, 4, 2, 2, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, | |
171 | 2, //golomb_order | |
172 | 7, //inc_limit | |
173 | 5, //max_run | |
174 | }, | |
175 | { | |
176 | { //level / run | |
177 | { EOB }, { 1, 1, 0 }, { -1, 1, 0 }, { 2, 1, 0 }, { -2, 1, 0 }, { 3, 1, 0 }, | |
178 | { -3, 1, 0 }, { 4, 1, 0 }, { -4, 1, 0 }, { 5, 1, 0 }, { -5, 1, 0 }, { 6, 1, 0 }, | |
179 | { -6, 1, 0 }, { 7, 1, 0 }, { -7, 1, 0 }, { 8, 1, 0 }, { -8, 1, 0 }, { 9, 1, 0 }, | |
180 | { -9, 1, 0 }, { 10, 1, 0 }, {-10, 1, 0 }, { 1, 2, 0 }, { -1, 2, 0 }, { 11, 1, 1 }, | |
181 | {-11, 1, 1 }, { 12, 1, 1 }, {-12, 1, 1 }, { 13, 1, 1 }, {-13, 1, 1 }, { 2, 2, 0 }, | |
182 | { -2, 2, 0 }, { 14, 1, 1 }, {-14, 1, 1 }, { 15, 1, 1 }, {-15, 1, 1 }, { 3, 2, 0 }, | |
183 | { -3, 2, 0 }, { 16, 1, 1 }, {-16, 1, 1 }, { 1, 3, 0 }, { -1, 3, 0 }, { 17, 1, 1 }, | |
184 | {-17, 1, 1 }, { 4, 2, 0 }, { -4, 2, 0 }, { 18, 1, 1 }, {-18, 1, 1 }, { 5, 2, 0 }, | |
185 | { -5, 2, 0 }, { 19, 1, 1 }, {-19, 1, 1 }, { 20, 1, 1 }, {-20, 1, 1 }, { 6, 2, 0 }, | |
186 | { -6, 2, 0 }, { 21, 1, 1 }, {-21, 1, 1 }, { 2, 3, 0 }, { -2, 3, 0 } | |
187 | }, | |
188 | //level_add | |
189 | { 0, 22, 7, 3, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, | |
190 | 2, //golomb_order | |
191 | 10, //inc_limit | |
192 | 3, //max_run | |
193 | }, | |
194 | { | |
195 | { //level / run | |
196 | { EOB }, { 1, 1, 0 }, { -1, 1, 0 }, { 2, 1, 0 }, { -2, 1, 0 }, { 3, 1, 0 }, | |
197 | { -3, 1, 0 }, { 4, 1, 0 }, { -4, 1, 0 }, { 5, 1, 0 }, { -5, 1, 0 }, { 6, 1, 0 }, | |
198 | { -6, 1, 0 }, { 7, 1, 0 }, { -7, 1, 0 }, { 8, 1, 0 }, { -8, 1, 0 }, { 9, 1, 0 }, | |
199 | { -9, 1, 0 }, { 10, 1, 0 }, {-10, 1, 0 }, { 11, 1, 0 }, {-11, 1, 0 }, { 12, 1, 0 }, | |
200 | {-12, 1, 0 }, { 13, 1, 0 }, {-13, 1, 0 }, { 14, 1, 0 }, {-14, 1, 0 }, { 15, 1, 0 }, | |
201 | {-15, 1, 0 }, { 16, 1, 0 }, {-16, 1, 0 }, { 1, 2, 0 }, { -1, 2, 0 }, { 17, 1, 0 }, | |
202 | {-17, 1, 0 }, { 18, 1, 0 }, {-18, 1, 0 }, { 19, 1, 0 }, {-19, 1, 0 }, { 20, 1, 0 }, | |
203 | {-20, 1, 0 }, { 21, 1, 0 }, {-21, 1, 0 }, { 2, 2, 0 }, { -2, 2, 0 }, { 22, 1, 0 }, | |
204 | {-22, 1, 0 }, { 23, 1, 0 }, {-23, 1, 0 }, { 24, 1, 0 }, {-24, 1, 0 }, { 25, 1, 0 }, | |
205 | {-25, 1, 0 }, { 3, 2, 0 }, { -3, 2, 0 }, { 26, 1, 0 }, {-26, 1, 0 } | |
206 | }, | |
207 | //level_add | |
208 | { 0, 27, 4, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, | |
209 | 2, //golomb_order | |
210 | INT_MAX, //inc_limit | |
211 | 2, //max_run | |
212 | } | |
213 | }; | |
214 | ||
215 | static const struct dec_2dvlc inter_dec[7] = { | |
216 | { | |
217 | { //level / run | |
218 | { 1, 1, 1 }, { -1, 1, 1 }, { 1, 2, 1 }, { -1, 2, 1 }, { 1, 3, 1 }, { -1, 3, 1 }, | |
219 | { 1, 4, 1 }, { -1, 4, 1 }, { 1, 5, 1 }, { -1, 5, 1 }, { 1, 6, 1 }, { -1, 6, 1 }, | |
220 | { 1, 7, 1 }, { -1, 7, 1 }, { 1, 8, 1 }, { -1, 8, 1 }, { 1, 9, 1 }, { -1, 9, 1 }, | |
221 | { 1, 10, 1 }, { -1, 10, 1 }, { 1, 11, 1 }, { -1, 11, 1 }, { 1, 12, 1 }, { -1, 12, 1 }, | |
222 | { 1, 13, 1 }, { -1, 13, 1 }, { 2, 1, 2 }, { -2, 1, 2 }, { 1, 14, 1 }, { -1, 14, 1 }, | |
223 | { 1, 15, 1 }, { -1, 15, 1 }, { 1, 16, 1 }, { -1, 16, 1 }, { 1, 17, 1 }, { -1, 17, 1 }, | |
224 | { 1, 18, 1 }, { -1, 18, 1 }, { 1, 19, 1 }, { -1, 19, 1 }, { 3, 1, 3 }, { -3, 1, 3 }, | |
225 | { 1, 20, 1 }, { -1, 20, 1 }, { 1, 21, 1 }, { -1, 21, 1 }, { 2, 2, 2 }, { -2, 2, 2 }, | |
226 | { 1, 22, 1 }, { -1, 22, 1 }, { 1, 23, 1 }, { -1, 23, 1 }, { 1, 24, 1 }, { -1, 24, 1 }, | |
227 | { 1, 25, 1 }, { -1, 25, 1 }, { 1, 26, 1 }, { -1, 26, 1 }, { EOB } | |
228 | }, | |
229 | //level_add | |
230 | { 0, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2 }, | |
231 | 3, //golomb_order | |
232 | 0, //inc_limit | |
233 | 26 //max_run | |
234 | }, | |
235 | { | |
236 | { //level / run | |
237 | { 1, 1, 0 }, { -1, 1, 0 }, { EOB }, { 1, 2, 0 }, { -1, 2, 0 }, { 1, 3, 0 }, | |
238 | { -1, 3, 0 }, { 1, 4, 0 }, { -1, 4, 0 }, { 1, 5, 0 }, { -1, 5, 0 }, { 1, 6, 0 }, | |
239 | { -1, 6, 0 }, { 2, 1, 1 }, { -2, 1, 1 }, { 1, 7, 0 }, { -1, 7, 0 }, { 1, 8, 0 }, | |
240 | { -1, 8, 0 }, { 1, 9, 0 }, { -1, 9, 0 }, { 1, 10, 0 }, { -1, 10, 0 }, { 2, 2, 1 }, | |
241 | { -2, 2, 1 }, { 1, 11, 0 }, { -1, 11, 0 }, { 1, 12, 0 }, { -1, 12, 0 }, { 3, 1, 2 }, | |
242 | { -3, 1, 2 }, { 1, 13, 0 }, { -1, 13, 0 }, { 1, 14, 0 }, { -1, 14, 0 }, { 2, 3, 1 }, | |
243 | { -2, 3, 1 }, { 1, 15, 0 }, { -1, 15, 0 }, { 2, 4, 1 }, { -2, 4, 1 }, { 1, 16, 0 }, | |
244 | { -1, 16, 0 }, { 2, 5, 1 }, { -2, 5, 1 }, { 1, 17, 0 }, { -1, 17, 0 }, { 4, 1, 3 }, | |
245 | { -4, 1, 3 }, { 2, 6, 1 }, { -2, 6, 1 }, { 1, 18, 0 }, { -1, 18, 0 }, { 1, 19, 0 }, | |
246 | { -1, 19, 0 }, { 2, 7, 1 }, { -2, 7, 1 }, { 3, 2, 2 }, { -3, 2, 2 } | |
247 | }, | |
248 | //level_add | |
249 | { 0, 5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, -1, -1, -1, -1, -1, -1, -1 }, | |
250 | 2, //golomb_order | |
251 | 1, //inc_limit | |
252 | 19 //max_run | |
253 | }, | |
254 | { | |
255 | { //level / run | |
256 | { 1, 1, 0 }, { -1, 1, 0 }, { EOB }, { 1, 2, 0 }, { -1, 2, 0 }, { 2, 1, 0 }, | |
257 | { -2, 1, 0 }, { 1, 3, 0 }, { -1, 3, 0 }, { 1, 4, 0 }, { -1, 4, 0 }, { 3, 1, 1 }, | |
258 | { -3, 1, 1 }, { 2, 2, 0 }, { -2, 2, 0 }, { 1, 5, 0 }, { -1, 5, 0 }, { 1, 6, 0 }, | |
259 | { -1, 6, 0 }, { 1, 7, 0 }, { -1, 7, 0 }, { 2, 3, 0 }, { -2, 3, 0 }, { 4, 1, 2 }, | |
260 | { -4, 1, 2 }, { 1, 8, 0 }, { -1, 8, 0 }, { 3, 2, 1 }, { -3, 2, 1 }, { 2, 4, 0 }, | |
261 | { -2, 4, 0 }, { 1, 9, 0 }, { -1, 9, 0 }, { 1, 10, 0 }, { -1, 10, 0 }, { 5, 1, 2 }, | |
262 | { -5, 1, 2 }, { 2, 5, 0 }, { -2, 5, 0 }, { 1, 11, 0 }, { -1, 11, 0 }, { 2, 6, 0 }, | |
263 | { -2, 6, 0 }, { 1, 12, 0 }, { -1, 12, 0 }, { 3, 3, 1 }, { -3, 3, 1 }, { 6, 1, 2 }, | |
264 | { -6, 1, 2 }, { 4, 2, 2 }, { -4, 2, 2 }, { 1, 13, 0 }, { -1, 13, 0 }, { 2, 7, 0 }, | |
265 | { -2, 7, 0 }, { 3, 4, 1 }, { -3, 4, 1 }, { 1, 14, 0 }, { -1, 14, 0 } | |
266 | }, | |
267 | //level_add | |
268 | { 0, 7, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, | |
269 | 2, //golomb_order | |
270 | 2, //inc_limit | |
271 | 14 //max_run | |
272 | }, | |
273 | { | |
274 | { //level / run | |
275 | { 1, 1, 0 }, { -1, 1, 0 }, { EOB }, { 2, 1, 0 }, { -2, 1, 0 }, { 1, 2, 0 }, | |
276 | { -1, 2, 0 }, { 3, 1, 0 }, { -3, 1, 0 }, { 1, 3, 0 }, { -1, 3, 0 }, { 2, 2, 0 }, | |
277 | { -2, 2, 0 }, { 4, 1, 1 }, { -4, 1, 1 }, { 1, 4, 0 }, { -1, 4, 0 }, { 5, 1, 1 }, | |
278 | { -5, 1, 1 }, { 1, 5, 0 }, { -1, 5, 0 }, { 3, 2, 0 }, { -3, 2, 0 }, { 2, 3, 0 }, | |
279 | { -2, 3, 0 }, { 1, 6, 0 }, { -1, 6, 0 }, { 6, 1, 1 }, { -6, 1, 1 }, { 2, 4, 0 }, | |
280 | { -2, 4, 0 }, { 1, 7, 0 }, { -1, 7, 0 }, { 4, 2, 1 }, { -4, 2, 1 }, { 7, 1, 2 }, | |
281 | { -7, 1, 2 }, { 3, 3, 0 }, { -3, 3, 0 }, { 1, 8, 0 }, { -1, 8, 0 }, { 2, 5, 0 }, | |
282 | { -2, 5, 0 }, { 8, 1, 2 }, { -8, 1, 2 }, { 1, 9, 0 }, { -1, 9, 0 }, { 3, 4, 0 }, | |
283 | { -3, 4, 0 }, { 2, 6, 0 }, { -2, 6, 0 }, { 5, 2, 1 }, { -5, 2, 1 }, { 1, 10, 0 }, | |
284 | { -1, 10, 0 }, { 9, 1, 2 }, { -9, 1, 2 }, { 4, 3, 1 }, { -4, 3, 1 } | |
285 | }, | |
286 | //level_add | |
287 | { 0,10, 6, 5, 4, 3, 3, 2, 2, 2, 2, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, | |
288 | 2, //golomb_order | |
289 | 3, //inc_limit | |
290 | 10 //max_run | |
291 | }, | |
292 | { | |
293 | { //level / run | |
294 | { 1, 1, 0 }, { -1, 1, 0 }, { EOB }, { 2, 1, 0 }, { -2, 1, 0 }, { 3, 1, 0 }, | |
295 | { -3, 1, 0 }, { 1, 2, 0 }, { -1, 2, 0 }, { 4, 1, 0 }, { -4, 1, 0 }, { 5, 1, 0 }, | |
296 | { -5, 1, 0 }, { 2, 2, 0 }, { -2, 2, 0 }, { 1, 3, 0 }, { -1, 3, 0 }, { 6, 1, 0 }, | |
297 | { -6, 1, 0 }, { 3, 2, 0 }, { -3, 2, 0 }, { 7, 1, 1 }, { -7, 1, 1 }, { 1, 4, 0 }, | |
298 | { -1, 4, 0 }, { 8, 1, 1 }, { -8, 1, 1 }, { 2, 3, 0 }, { -2, 3, 0 }, { 4, 2, 0 }, | |
299 | { -4, 2, 0 }, { 1, 5, 0 }, { -1, 5, 0 }, { 9, 1, 1 }, { -9, 1, 1 }, { 5, 2, 0 }, | |
300 | { -5, 2, 0 }, { 2, 4, 0 }, { -2, 4, 0 }, { 1, 6, 0 }, { -1, 6, 0 }, { 10, 1, 2 }, | |
301 | {-10, 1, 2 }, { 3, 3, 0 }, { -3, 3, 0 }, { 11, 1, 2 }, {-11, 1, 2 }, { 1, 7, 0 }, | |
302 | { -1, 7, 0 }, { 6, 2, 0 }, { -6, 2, 0 }, { 3, 4, 0 }, { -3, 4, 0 }, { 2, 5, 0 }, | |
303 | { -2, 5, 0 }, { 12, 1, 2 }, {-12, 1, 2 }, { 4, 3, 0 }, { -4, 3, 0 } | |
304 | }, | |
305 | //level_add | |
306 | { 0, 13, 7, 5, 4, 3, 2, 2, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, | |
307 | 2, //golomb_order | |
308 | 6, //inc_limit | |
309 | 7 //max_run | |
310 | }, | |
311 | { | |
312 | { //level / run | |
313 | { EOB }, { 1, 1, 0 }, { -1, 1, 0 }, { 2, 1, 0 }, { -2, 1, 0 }, { 3, 1, 0 }, | |
314 | { -3, 1, 0 }, { 4, 1, 0 }, { -4, 1, 0 }, { 5, 1, 0 }, { -5, 1, 0 }, { 1, 2, 0 }, | |
315 | { -1, 2, 0 }, { 6, 1, 0 }, { -6, 1, 0 }, { 7, 1, 0 }, { -7, 1, 0 }, { 8, 1, 0 }, | |
316 | { -8, 1, 0 }, { 2, 2, 0 }, { -2, 2, 0 }, { 9, 1, 0 }, { -9, 1, 0 }, { 1, 3, 0 }, | |
317 | { -1, 3, 0 }, { 10, 1, 1 }, { -10, 1, 1 }, { 3, 2, 0 }, { -3, 2, 0 }, { 11, 1, 1 }, | |
318 | { -11, 1, 1 }, { 4, 2, 0 }, { -4, 2, 0 }, { 12, 1, 1 }, { -12, 1, 1 }, { 1, 4, 0 }, | |
319 | { -1, 4, 0 }, { 2, 3, 0 }, { -2, 3, 0 }, { 13, 1, 1 }, { -13, 1, 1 }, { 5, 2, 0 }, | |
320 | { -5, 2, 0 }, { 14, 1, 1 }, { -14, 1, 1 }, { 6, 2, 0 }, { -6, 2, 0 }, { 1, 5, 0 }, | |
321 | { -1, 5, 0 }, { 15, 1, 1 }, { -15, 1, 1 }, { 3, 3, 0 }, { -3, 3, 0 }, { 16, 1, 1 }, | |
322 | { -16, 1, 1 }, { 2, 4, 0 }, { -2, 4, 0 }, { 7, 2, 0 }, { -7, 2, 0 } | |
323 | }, | |
324 | //level_add | |
325 | { 0, 17, 8, 4, 3, 2, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, | |
326 | 2, //golomb_order | |
327 | 9, //inc_limit | |
328 | 5 //max_run | |
329 | }, | |
330 | { | |
331 | { //level / run | |
332 | { EOB }, { 1, 1, 0 }, { -1, 1, 0 }, { 2, 1, 0 }, { -2, 1, 0 }, { 3, 1, 0 }, | |
333 | { -3, 1, 0 }, { 4, 1, 0 }, { -4, 1, 0 }, { 5, 1, 0 }, { -5, 1, 0 }, { 6, 1, 0 }, | |
334 | { -6, 1, 0 }, { 7, 1, 0 }, { -7, 1, 0 }, { 1, 2, 0 }, { -1, 2, 0 }, { 8, 1, 0 }, | |
335 | { -8, 1, 0 }, { 9, 1, 0 }, { -9, 1, 0 }, { 10, 1, 0 }, { -10, 1, 0 }, { 11, 1, 0 }, | |
336 | { -11, 1, 0 }, { 12, 1, 0 }, { -12, 1, 0 }, { 2, 2, 0 }, { -2, 2, 0 }, { 13, 1, 0 }, | |
337 | { -13, 1, 0 }, { 1, 3, 0 }, { -1, 3, 0 }, { 14, 1, 0 }, { -14, 1, 0 }, { 15, 1, 0 }, | |
338 | { -15, 1, 0 }, { 3, 2, 0 }, { -3, 2, 0 }, { 16, 1, 0 }, { -16, 1, 0 }, { 17, 1, 0 }, | |
339 | { -17, 1, 0 }, { 18, 1, 0 }, { -18, 1, 0 }, { 4, 2, 0 }, { -4, 2, 0 }, { 19, 1, 0 }, | |
340 | { -19, 1, 0 }, { 20, 1, 0 }, { -20, 1, 0 }, { 2, 3, 0 }, { -2, 3, 0 }, { 1, 4, 0 }, | |
341 | { -1, 4, 0 }, { 5, 2, 0 }, { -5, 2, 0 }, { 21, 1, 0 }, { -21, 1, 0 } | |
342 | }, | |
343 | //level_add | |
344 | { 0, 22, 6, 3, 2, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, | |
345 | 2, //golomb_order | |
346 | INT_MAX, //inc_limit | |
347 | 4 //max_run | |
348 | } | |
349 | }; | |
350 | ||
351 | static const struct dec_2dvlc chroma_dec[5] = { | |
352 | { | |
353 | { //level / run | |
354 | { 1, 1, 1 }, { -1, 1, 1 }, { 1, 2, 1 }, { -1, 2, 1 }, { 1, 3, 1 }, { -1, 3, 1 }, | |
355 | { 1, 4, 1 }, { -1, 4, 1 }, { 1, 5, 1 }, { -1, 5, 1 }, { 1, 6, 1 }, { -1, 6, 1 }, | |
356 | { 1, 7, 1 }, { -1, 7, 1 }, { 2, 1, 2 }, { -2, 1, 2 }, { 1, 8, 1 }, { -1, 8, 1 }, | |
357 | { 1, 9, 1 }, { -1, 9, 1 }, { 1, 10, 1 }, { -1, 10, 1 }, { 1, 11, 1 }, { -1, 11, 1 }, | |
358 | { 1, 12, 1 }, { -1, 12, 1 }, { 1, 13, 1 }, { -1, 13, 1 }, { 1, 14, 1 }, { -1, 14, 1 }, | |
359 | { 1, 15, 1 }, { -1, 15, 1 }, { 3, 1, 3 }, { -3, 1, 3 }, { 1, 16, 1 }, { -1, 16, 1 }, | |
360 | { 1, 17, 1 }, { -1, 17, 1 }, { 1, 18, 1 }, { -1, 18, 1 }, { 1, 19, 1 }, { -1, 19, 1 }, | |
361 | { 1, 20, 1 }, { -1, 20, 1 }, { 1, 21, 1 }, { -1, 21, 1 }, { 1, 22, 1 }, { -1, 22, 1 }, | |
362 | { 2, 2, 2 }, { -2, 2, 2 }, { 1, 23, 1 }, { -1, 23, 1 }, { 1, 24, 1 }, { -1, 24, 1 }, | |
363 | { 1, 25, 1 }, { -1, 25, 1 }, { 4, 1, 3 }, { -4, 1, 3 }, { EOB } | |
364 | }, | |
365 | //level_add | |
366 | { 0, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, -1 }, | |
367 | 2, //golomb_order | |
368 | 0, //inc_limit | |
369 | 25 //max_run | |
370 | }, | |
371 | { | |
372 | { //level / run | |
373 | { EOB }, { 1, 1, 0 }, { -1, 1, 0 }, { 1, 2, 0 }, { -1, 2, 0 }, { 2, 1, 1 }, | |
374 | { -2, 1, 1 }, { 1, 3, 0 }, { -1, 3, 0 }, { 1, 4, 0 }, { -1, 4, 0 }, { 1, 5, 0 }, | |
375 | { -1, 5, 0 }, { 1, 6, 0 }, { -1, 6, 0 }, { 3, 1, 2 }, { -3, 1, 2 }, { 1, 7, 0 }, | |
376 | { -1, 7, 0 }, { 1, 8, 0 }, { -1, 8, 0 }, { 2, 2, 1 }, { -2, 2, 1 }, { 1, 9, 0 }, | |
377 | { -1, 9, 0 }, { 1, 10, 0 }, { -1, 10, 0 }, { 1, 11, 0 }, { -1, 11, 0 }, { 4, 1, 2 }, | |
378 | { -4, 1, 2 }, { 1, 12, 0 }, { -1, 12, 0 }, { 1, 13, 0 }, { -1, 13, 0 }, { 1, 14, 0 }, | |
379 | { -1, 14, 0 }, { 2, 3, 1 }, { -2, 3, 1 }, { 1, 15, 0 }, { -1, 15, 0 }, { 2, 4, 1 }, | |
380 | { -2, 4, 1 }, { 5, 1, 3 }, { -5, 1, 3 }, { 3, 2, 2 }, { -3, 2, 2 }, { 1, 16, 0 }, | |
381 | { -1, 16, 0 }, { 1, 17, 0 }, { -1, 17, 0 }, { 1, 18, 0 }, { -1, 18, 0 }, { 2, 5, 1 }, | |
382 | { -2, 5, 1 }, { 1, 19, 0 }, { -1, 19, 0 }, { 1, 20, 0 }, { -1, 20, 0 } | |
383 | }, | |
384 | //level_add | |
385 | { 0, 6, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, -1, -1, -1, -1, -1, -1 }, | |
386 | 0, //golomb_order | |
387 | 1, //inc_limit | |
388 | 20 //max_run | |
389 | }, | |
390 | { | |
391 | { //level / run | |
392 | { 1, 1, 0 }, { -1, 1, 0 }, { EOB }, { 2, 1, 0 }, { -2, 1, 0 }, { 1, 2, 0 }, | |
393 | { -1, 2, 0 }, { 3, 1, 1 }, { -3, 1, 1 }, { 1, 3, 0 }, { -1, 3, 0 }, { 4, 1, 1 }, | |
394 | { -4, 1, 1 }, { 2, 2, 0 }, { -2, 2, 0 }, { 1, 4, 0 }, { -1, 4, 0 }, { 5, 1, 2 }, | |
395 | { -5, 1, 2 }, { 1, 5, 0 }, { -1, 5, 0 }, { 3, 2, 1 }, { -3, 2, 1 }, { 2, 3, 0 }, | |
396 | { -2, 3, 0 }, { 1, 6, 0 }, { -1, 6, 0 }, { 6, 1, 2 }, { -6, 1, 2 }, { 1, 7, 0 }, | |
397 | { -1, 7, 0 }, { 2, 4, 0 }, { -2, 4, 0 }, { 7, 1, 2 }, { -7, 1, 2 }, { 1, 8, 0 }, | |
398 | { -1, 8, 0 }, { 4, 2, 1 }, { -4, 2, 1 }, { 1, 9, 0 }, { -1, 9, 0 }, { 3, 3, 1 }, | |
399 | { -3, 3, 1 }, { 2, 5, 0 }, { -2, 5, 0 }, { 2, 6, 0 }, { -2, 6, 0 }, { 8, 1, 2 }, | |
400 | { -8, 1, 2 }, { 1, 10, 0 }, { -1, 10, 0 }, { 1, 11, 0 }, { -1, 11, 0 }, { 9, 1, 2 }, | |
401 | { -9, 1, 2 }, { 5, 2, 2 }, { -5, 2, 2 }, { 3, 4, 1 }, { -3, 4, 1 }, | |
402 | }, | |
403 | //level_add | |
404 | { 0,10, 6, 4, 4, 3, 3, 2, 2, 2, 2, 2, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, | |
405 | 1, //golomb_order | |
406 | 2, //inc_limit | |
407 | 11 //max_run | |
408 | }, | |
409 | { | |
410 | { //level / run | |
411 | { EOB }, { 1, 1, 0 }, { -1, 1, 0 }, { 2, 1, 0 }, { -2, 1, 0 }, { 3, 1, 0 }, | |
412 | { -3, 1, 0 }, { 4, 1, 0 }, { -4, 1, 0 }, { 1, 2, 0 }, { -1, 2, 0 }, { 5, 1, 1 }, | |
413 | { -5, 1, 1 }, { 2, 2, 0 }, { -2, 2, 0 }, { 6, 1, 1 }, { -6, 1, 1 }, { 1, 3, 0 }, | |
414 | { -1, 3, 0 }, { 7, 1, 1 }, { -7, 1, 1 }, { 3, 2, 0 }, { -3, 2, 0 }, { 8, 1, 1 }, | |
415 | { -8, 1, 1 }, { 1, 4, 0 }, { -1, 4, 0 }, { 2, 3, 0 }, { -2, 3, 0 }, { 9, 1, 1 }, | |
416 | { -9, 1, 1 }, { 4, 2, 0 }, { -4, 2, 0 }, { 1, 5, 0 }, { -1, 5, 0 }, { 10, 1, 1 }, | |
417 | {-10, 1, 1 }, { 3, 3, 0 }, { -3, 3, 0 }, { 5, 2, 1 }, { -5, 2, 1 }, { 2, 4, 0 }, | |
418 | { -2, 4, 0 }, { 11, 1, 1 }, {-11, 1, 1 }, { 1, 6, 0 }, { -1, 6, 0 }, { 12, 1, 1 }, | |
419 | {-12, 1, 1 }, { 1, 7, 0 }, { -1, 7, 0 }, { 6, 2, 1 }, { -6, 2, 1 }, { 13, 1, 1 }, | |
420 | {-13, 1, 1 }, { 2, 5, 0 }, { -2, 5, 0 }, { 1, 8, 0 }, { -1, 8, 0 }, | |
421 | }, | |
422 | //level_add | |
423 | { 0, 14, 7, 4, 3, 3, 2, 2, 2, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, | |
424 | 1, //golomb_order | |
425 | 4, //inc_limit | |
426 | 8 //max_run | |
427 | }, | |
428 | { | |
429 | { //level / run | |
430 | { EOB }, { 1, 1, 0 }, { -1, 1, 0 }, { 2, 1, 0 }, { -2, 1, 0 }, { 3, 1, 0 }, | |
431 | { -3, 1, 0 }, { 4, 1, 0 }, { -4, 1, 0 }, { 5, 1, 0 }, { -5, 1, 0 }, { 6, 1, 0 }, | |
432 | { -6, 1, 0 }, { 7, 1, 0 }, { -7, 1, 0 }, { 8, 1, 0 }, { -8, 1, 0 }, { 1, 2, 0 }, | |
433 | { -1, 2, 0 }, { 9, 1, 0 }, { -9, 1, 0 }, { 10, 1, 0 }, { -10, 1, 0 }, { 11, 1, 0 }, | |
434 | { -11, 1, 0 }, { 2, 2, 0 }, { -2, 2, 0 }, { 12, 1, 0 }, { -12, 1, 0 }, { 13, 1, 0 }, | |
435 | { -13, 1, 0 }, { 3, 2, 0 }, { -3, 2, 0 }, { 14, 1, 0 }, { -14, 1, 0 }, { 1, 3, 0 }, | |
436 | { -1, 3, 0 }, { 15, 1, 0 }, { -15, 1, 0 }, { 4, 2, 0 }, { -4, 2, 0 }, { 16, 1, 0 }, | |
437 | { -16, 1, 0 }, { 17, 1, 0 }, { -17, 1, 0 }, { 5, 2, 0 }, { -5, 2, 0 }, { 1, 4, 0 }, | |
438 | { -1, 4, 0 }, { 2, 3, 0 }, { -2, 3, 0 }, { 18, 1, 0 }, { -18, 1, 0 }, { 6, 2, 0 }, | |
439 | { -6, 2, 0 }, { 19, 1, 0 }, { -19, 1, 0 }, { 1, 5, 0 }, { -1, 5, 0 }, | |
440 | }, | |
441 | //level_add | |
442 | { 0, 20, 7, 3, 2, 2, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, | |
443 | 0, //golomb_order | |
444 | INT_MAX, //inc_limit | |
445 | 5, //max_run | |
446 | } | |
447 | }; | |
448 | ||
449 | #undef EOB | |
450 | ||
451 | /***************************************************************************** | |
452 | * | |
453 | * motion vector prediction | |
454 | * | |
455 | ****************************************************************************/ | |
456 | ||
457 | static inline void store_mvs(AVSContext *h) | |
458 | { | |
459 | h->col_mv[h->mbidx * 4 + 0] = h->mv[MV_FWD_X0]; | |
460 | h->col_mv[h->mbidx * 4 + 1] = h->mv[MV_FWD_X1]; | |
461 | h->col_mv[h->mbidx * 4 + 2] = h->mv[MV_FWD_X2]; | |
462 | h->col_mv[h->mbidx * 4 + 3] = h->mv[MV_FWD_X3]; | |
463 | } | |
464 | ||
465 | static inline void mv_pred_direct(AVSContext *h, cavs_vector *pmv_fw, | |
466 | cavs_vector *col_mv) | |
467 | { | |
468 | cavs_vector *pmv_bw = pmv_fw + MV_BWD_OFFS; | |
469 | int den = h->direct_den[col_mv->ref]; | |
f6fa7814 | 470 | int m = FF_SIGNBIT(col_mv->x); |
2ba45a60 DM |
471 | |
472 | pmv_fw->dist = h->dist[1]; | |
473 | pmv_bw->dist = h->dist[0]; | |
474 | pmv_fw->ref = 1; | |
475 | pmv_bw->ref = 0; | |
476 | /* scale the co-located motion vector according to its temporal span */ | |
477 | pmv_fw->x = (((den + (den * col_mv->x * pmv_fw->dist ^ m) - m - 1) >> 14) ^ m) - m; | |
478 | pmv_bw->x = m - (((den + (den * col_mv->x * pmv_bw->dist ^ m) - m - 1) >> 14) ^ m); | |
f6fa7814 | 479 | m = FF_SIGNBIT(col_mv->y); |
2ba45a60 DM |
480 | pmv_fw->y = (((den + (den * col_mv->y * pmv_fw->dist ^ m) - m - 1) >> 14) ^ m) - m; |
481 | pmv_bw->y = m - (((den + (den * col_mv->y * pmv_bw->dist ^ m) - m - 1) >> 14) ^ m); | |
482 | } | |
483 | ||
484 | static inline void mv_pred_sym(AVSContext *h, cavs_vector *src, | |
485 | enum cavs_block size) | |
486 | { | |
487 | cavs_vector *dst = src + MV_BWD_OFFS; | |
488 | ||
489 | /* backward mv is the scaled and negated forward mv */ | |
490 | dst->x = -((src->x * h->sym_factor + 256) >> 9); | |
491 | dst->y = -((src->y * h->sym_factor + 256) >> 9); | |
492 | dst->ref = 0; | |
493 | dst->dist = h->dist[0]; | |
494 | set_mvs(dst, size); | |
495 | } | |
496 | ||
497 | /***************************************************************************** | |
498 | * | |
499 | * residual data decoding | |
500 | * | |
501 | ****************************************************************************/ | |
502 | ||
503 | /** kth-order exponential golomb code */ | |
504 | static inline int get_ue_code(GetBitContext *gb, int order) | |
505 | { | |
506 | unsigned ret = get_ue_golomb(gb); | |
507 | if (ret >= ((1U<<31)>>order)) { | |
508 | av_log(NULL, AV_LOG_ERROR, "get_ue_code: value too larger\n"); | |
509 | return AVERROR_INVALIDDATA; | |
510 | } | |
511 | if (order) { | |
512 | return (ret<<order) + get_bits(gb, order); | |
513 | } | |
514 | return ret; | |
515 | } | |
516 | ||
517 | static inline int dequant(AVSContext *h, int16_t *level_buf, uint8_t *run_buf, | |
518 | int16_t *dst, int mul, int shift, int coeff_num) | |
519 | { | |
520 | int round = 1 << (shift - 1); | |
521 | int pos = -1; | |
522 | const uint8_t *scantab = h->scantable.permutated; | |
523 | ||
524 | /* inverse scan and dequantization */ | |
525 | while (--coeff_num >= 0) { | |
526 | pos += run_buf[coeff_num]; | |
527 | if (pos > 63) { | |
528 | av_log(h->avctx, AV_LOG_ERROR, | |
529 | "position out of block bounds at pic %d MB(%d,%d)\n", | |
530 | h->cur.poc, h->mbx, h->mby); | |
531 | return AVERROR_INVALIDDATA; | |
532 | } | |
533 | dst[scantab[pos]] = (level_buf[coeff_num] * mul + round) >> shift; | |
534 | } | |
535 | return 0; | |
536 | } | |
537 | ||
538 | /** | |
539 | * decode coefficients from one 8x8 block, dequantize, inverse transform | |
540 | * and add them to sample block | |
541 | * @param r pointer to 2D VLC table | |
542 | * @param esc_golomb_order escape codes are k-golomb with this order k | |
543 | * @param qp quantizer | |
544 | * @param dst location of sample block | |
545 | * @param stride line stride in frame buffer | |
546 | */ | |
547 | static int decode_residual_block(AVSContext *h, GetBitContext *gb, | |
548 | const struct dec_2dvlc *r, int esc_golomb_order, | |
549 | int qp, uint8_t *dst, int stride) | |
550 | { | |
551 | int i, esc_code, level, mask, ret; | |
552 | unsigned int level_code, run; | |
553 | int16_t level_buf[65]; | |
554 | uint8_t run_buf[65]; | |
555 | int16_t *block = h->block; | |
556 | ||
557 | for (i = 0; i < 65; i++) { | |
558 | level_code = get_ue_code(gb, r->golomb_order); | |
559 | if (level_code >= ESCAPE_CODE) { | |
560 | run = ((level_code - ESCAPE_CODE) >> 1) + 1; | |
561 | if(run > 64) { | |
562 | av_log(h->avctx, AV_LOG_ERROR, "run %d is too large\n", run); | |
563 | return AVERROR_INVALIDDATA; | |
564 | } | |
565 | esc_code = get_ue_code(gb, esc_golomb_order); | |
566 | level = esc_code + (run > r->max_run ? 1 : r->level_add[run]); | |
567 | while (level > r->inc_limit) | |
568 | r++; | |
569 | mask = -(level_code & 1); | |
570 | level = (level ^ mask) - mask; | |
571 | } else { | |
572 | level = r->rltab[level_code][0]; | |
573 | if (!level) //end of block signal | |
574 | break; | |
575 | run = r->rltab[level_code][1]; | |
576 | r += r->rltab[level_code][2]; | |
577 | } | |
578 | level_buf[i] = level; | |
579 | run_buf[i] = run; | |
580 | } | |
581 | if ((ret = dequant(h, level_buf, run_buf, block, dequant_mul[qp], | |
582 | dequant_shift[qp], i)) < 0) | |
583 | return ret; | |
584 | h->cdsp.cavs_idct8_add(dst, block, stride); | |
585 | h->bdsp.clear_block(block); | |
586 | return 0; | |
587 | } | |
588 | ||
589 | ||
590 | static inline void decode_residual_chroma(AVSContext *h) | |
591 | { | |
592 | if (h->cbp & (1 << 4)) | |
593 | decode_residual_block(h, &h->gb, chroma_dec, 0, | |
594 | ff_cavs_chroma_qp[h->qp], h->cu, h->c_stride); | |
595 | if (h->cbp & (1 << 5)) | |
596 | decode_residual_block(h, &h->gb, chroma_dec, 0, | |
597 | ff_cavs_chroma_qp[h->qp], h->cv, h->c_stride); | |
598 | } | |
599 | ||
600 | static inline int decode_residual_inter(AVSContext *h) | |
601 | { | |
602 | int block; | |
603 | ||
604 | /* get coded block pattern */ | |
605 | int cbp = get_ue_golomb(&h->gb); | |
606 | if (cbp > 63U) { | |
607 | av_log(h->avctx, AV_LOG_ERROR, "illegal inter cbp %d\n", cbp); | |
608 | return AVERROR_INVALIDDATA; | |
609 | } | |
610 | h->cbp = cbp_tab[cbp][1]; | |
611 | ||
612 | /* get quantizer */ | |
613 | if (h->cbp && !h->qp_fixed) | |
614 | h->qp = (h->qp + get_se_golomb(&h->gb)) & 63; | |
615 | for (block = 0; block < 4; block++) | |
616 | if (h->cbp & (1 << block)) | |
617 | decode_residual_block(h, &h->gb, inter_dec, 0, h->qp, | |
618 | h->cy + h->luma_scan[block], h->l_stride); | |
619 | decode_residual_chroma(h); | |
620 | ||
621 | return 0; | |
622 | } | |
623 | ||
624 | /***************************************************************************** | |
625 | * | |
626 | * macroblock level | |
627 | * | |
628 | ****************************************************************************/ | |
629 | ||
630 | static inline void set_mv_intra(AVSContext *h) | |
631 | { | |
632 | h->mv[MV_FWD_X0] = ff_cavs_intra_mv; | |
633 | set_mvs(&h->mv[MV_FWD_X0], BLK_16X16); | |
634 | h->mv[MV_BWD_X0] = ff_cavs_intra_mv; | |
635 | set_mvs(&h->mv[MV_BWD_X0], BLK_16X16); | |
636 | if (h->cur.f->pict_type != AV_PICTURE_TYPE_B) | |
637 | h->col_type_base[h->mbidx] = I_8X8; | |
638 | } | |
639 | ||
640 | static int decode_mb_i(AVSContext *h, int cbp_code) | |
641 | { | |
642 | GetBitContext *gb = &h->gb; | |
643 | unsigned pred_mode_uv; | |
644 | int block; | |
645 | uint8_t top[18]; | |
646 | uint8_t *left = NULL; | |
647 | uint8_t *d; | |
648 | ||
649 | ff_cavs_init_mb(h); | |
650 | ||
651 | /* get intra prediction modes from stream */ | |
652 | for (block = 0; block < 4; block++) { | |
653 | int nA, nB, predpred; | |
654 | int pos = scan3x3[block]; | |
655 | ||
656 | nA = h->pred_mode_Y[pos - 1]; | |
657 | nB = h->pred_mode_Y[pos - 3]; | |
658 | predpred = FFMIN(nA, nB); | |
659 | if (predpred == NOT_AVAIL) // if either is not available | |
660 | predpred = INTRA_L_LP; | |
661 | if (!get_bits1(gb)) { | |
662 | int rem_mode = get_bits(gb, 2); | |
663 | predpred = rem_mode + (rem_mode >= predpred); | |
664 | } | |
665 | h->pred_mode_Y[pos] = predpred; | |
666 | } | |
667 | pred_mode_uv = get_ue_golomb(gb); | |
668 | if (pred_mode_uv > 6) { | |
669 | av_log(h->avctx, AV_LOG_ERROR, "illegal intra chroma pred mode\n"); | |
670 | return AVERROR_INVALIDDATA; | |
671 | } | |
672 | ff_cavs_modify_mb_i(h, &pred_mode_uv); | |
673 | ||
674 | /* get coded block pattern */ | |
675 | if (h->cur.f->pict_type == AV_PICTURE_TYPE_I) | |
676 | cbp_code = get_ue_golomb(gb); | |
677 | if (cbp_code > 63U) { | |
678 | av_log(h->avctx, AV_LOG_ERROR, "illegal intra cbp\n"); | |
679 | return AVERROR_INVALIDDATA; | |
680 | } | |
681 | h->cbp = cbp_tab[cbp_code][0]; | |
682 | if (h->cbp && !h->qp_fixed) | |
683 | h->qp = (h->qp + get_se_golomb(gb)) & 63; //qp_delta | |
684 | ||
685 | /* luma intra prediction interleaved with residual decode/transform/add */ | |
686 | for (block = 0; block < 4; block++) { | |
687 | d = h->cy + h->luma_scan[block]; | |
688 | ff_cavs_load_intra_pred_luma(h, top, &left, block); | |
689 | h->intra_pred_l[h->pred_mode_Y[scan3x3[block]]] | |
690 | (d, top, left, h->l_stride); | |
691 | if (h->cbp & (1<<block)) | |
692 | decode_residual_block(h, gb, intra_dec, 1, h->qp, d, h->l_stride); | |
693 | } | |
694 | ||
695 | /* chroma intra prediction */ | |
696 | ff_cavs_load_intra_pred_chroma(h); | |
697 | h->intra_pred_c[pred_mode_uv](h->cu, &h->top_border_u[h->mbx * 10], | |
698 | h->left_border_u, h->c_stride); | |
699 | h->intra_pred_c[pred_mode_uv](h->cv, &h->top_border_v[h->mbx * 10], | |
700 | h->left_border_v, h->c_stride); | |
701 | ||
702 | decode_residual_chroma(h); | |
703 | ff_cavs_filter(h, I_8X8); | |
704 | set_mv_intra(h); | |
705 | return 0; | |
706 | } | |
707 | ||
708 | static inline void set_intra_mode_default(AVSContext *h) | |
709 | { | |
710 | if (h->stream_revision > 0) { | |
711 | h->pred_mode_Y[3] = h->pred_mode_Y[6] = NOT_AVAIL; | |
712 | h->top_pred_Y[h->mbx * 2 + 0] = h->top_pred_Y[h->mbx * 2 + 1] = NOT_AVAIL; | |
713 | } else { | |
714 | h->pred_mode_Y[3] = h->pred_mode_Y[6] = INTRA_L_LP; | |
715 | h->top_pred_Y[h->mbx * 2 + 0] = h->top_pred_Y[h->mbx * 2 + 1] = INTRA_L_LP; | |
716 | } | |
717 | } | |
718 | ||
719 | static void decode_mb_p(AVSContext *h, enum cavs_mb mb_type) | |
720 | { | |
721 | GetBitContext *gb = &h->gb; | |
722 | int ref[4]; | |
723 | ||
724 | ff_cavs_init_mb(h); | |
725 | switch (mb_type) { | |
726 | case P_SKIP: | |
727 | ff_cavs_mv(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_PSKIP, BLK_16X16, 0); | |
728 | break; | |
729 | case P_16X16: | |
730 | ref[0] = h->ref_flag ? 0 : get_bits1(gb); | |
731 | ff_cavs_mv(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_MEDIAN, BLK_16X16, ref[0]); | |
732 | break; | |
733 | case P_16X8: | |
734 | ref[0] = h->ref_flag ? 0 : get_bits1(gb); | |
735 | ref[2] = h->ref_flag ? 0 : get_bits1(gb); | |
736 | ff_cavs_mv(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_TOP, BLK_16X8, ref[0]); | |
737 | ff_cavs_mv(h, MV_FWD_X2, MV_FWD_A1, MV_PRED_LEFT, BLK_16X8, ref[2]); | |
738 | break; | |
739 | case P_8X16: | |
740 | ref[0] = h->ref_flag ? 0 : get_bits1(gb); | |
741 | ref[1] = h->ref_flag ? 0 : get_bits1(gb); | |
742 | ff_cavs_mv(h, MV_FWD_X0, MV_FWD_B3, MV_PRED_LEFT, BLK_8X16, ref[0]); | |
743 | ff_cavs_mv(h, MV_FWD_X1, MV_FWD_C2, MV_PRED_TOPRIGHT, BLK_8X16, ref[1]); | |
744 | break; | |
745 | case P_8X8: | |
746 | ref[0] = h->ref_flag ? 0 : get_bits1(gb); | |
747 | ref[1] = h->ref_flag ? 0 : get_bits1(gb); | |
748 | ref[2] = h->ref_flag ? 0 : get_bits1(gb); | |
749 | ref[3] = h->ref_flag ? 0 : get_bits1(gb); | |
750 | ff_cavs_mv(h, MV_FWD_X0, MV_FWD_B3, MV_PRED_MEDIAN, BLK_8X8, ref[0]); | |
751 | ff_cavs_mv(h, MV_FWD_X1, MV_FWD_C2, MV_PRED_MEDIAN, BLK_8X8, ref[1]); | |
752 | ff_cavs_mv(h, MV_FWD_X2, MV_FWD_X1, MV_PRED_MEDIAN, BLK_8X8, ref[2]); | |
753 | ff_cavs_mv(h, MV_FWD_X3, MV_FWD_X0, MV_PRED_MEDIAN, BLK_8X8, ref[3]); | |
754 | } | |
755 | ff_cavs_inter(h, mb_type); | |
756 | set_intra_mode_default(h); | |
757 | store_mvs(h); | |
758 | if (mb_type != P_SKIP) | |
759 | decode_residual_inter(h); | |
760 | ff_cavs_filter(h, mb_type); | |
761 | h->col_type_base[h->mbidx] = mb_type; | |
762 | } | |
763 | ||
764 | static int decode_mb_b(AVSContext *h, enum cavs_mb mb_type) | |
765 | { | |
766 | int block; | |
767 | enum cavs_sub_mb sub_type[4]; | |
768 | int flags; | |
769 | ||
770 | ff_cavs_init_mb(h); | |
771 | ||
772 | /* reset all MVs */ | |
773 | h->mv[MV_FWD_X0] = ff_cavs_dir_mv; | |
774 | set_mvs(&h->mv[MV_FWD_X0], BLK_16X16); | |
775 | h->mv[MV_BWD_X0] = ff_cavs_dir_mv; | |
776 | set_mvs(&h->mv[MV_BWD_X0], BLK_16X16); | |
777 | switch (mb_type) { | |
778 | case B_SKIP: | |
779 | case B_DIRECT: | |
780 | if (!h->col_type_base[h->mbidx]) { | |
781 | /* intra MB at co-location, do in-plane prediction */ | |
782 | ff_cavs_mv(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_BSKIP, BLK_16X16, 1); | |
783 | ff_cavs_mv(h, MV_BWD_X0, MV_BWD_C2, MV_PRED_BSKIP, BLK_16X16, 0); | |
784 | } else | |
785 | /* direct prediction from co-located P MB, block-wise */ | |
786 | for (block = 0; block < 4; block++) | |
787 | mv_pred_direct(h, &h->mv[mv_scan[block]], | |
788 | &h->col_mv[h->mbidx * 4 + block]); | |
789 | break; | |
790 | case B_FWD_16X16: | |
791 | ff_cavs_mv(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_MEDIAN, BLK_16X16, 1); | |
792 | break; | |
793 | case B_SYM_16X16: | |
794 | ff_cavs_mv(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_MEDIAN, BLK_16X16, 1); | |
795 | mv_pred_sym(h, &h->mv[MV_FWD_X0], BLK_16X16); | |
796 | break; | |
797 | case B_BWD_16X16: | |
798 | ff_cavs_mv(h, MV_BWD_X0, MV_BWD_C2, MV_PRED_MEDIAN, BLK_16X16, 0); | |
799 | break; | |
800 | case B_8X8: | |
801 | #define TMP_UNUSED_INX 7 | |
802 | flags = 0; | |
803 | for (block = 0; block < 4; block++) | |
804 | sub_type[block] = get_bits(&h->gb, 2); | |
805 | for (block = 0; block < 4; block++) { | |
806 | switch (sub_type[block]) { | |
807 | case B_SUB_DIRECT: | |
808 | if (!h->col_type_base[h->mbidx]) { | |
809 | /* intra MB at co-location, do in-plane prediction */ | |
810 | if(flags==0) { | |
811 | // if col-MB is a Intra MB, current Block size is 16x16. | |
812 | // AVS standard section 9.9.1 | |
813 | if(block>0){ | |
814 | h->mv[TMP_UNUSED_INX ] = h->mv[MV_FWD_X0 ]; | |
815 | h->mv[TMP_UNUSED_INX + MV_BWD_OFFS] = h->mv[MV_FWD_X0 + MV_BWD_OFFS]; | |
816 | } | |
817 | ff_cavs_mv(h, MV_FWD_X0, MV_FWD_C2, | |
818 | MV_PRED_BSKIP, BLK_8X8, 1); | |
819 | ff_cavs_mv(h, MV_FWD_X0+MV_BWD_OFFS, | |
820 | MV_FWD_C2+MV_BWD_OFFS, | |
821 | MV_PRED_BSKIP, BLK_8X8, 0); | |
822 | if(block>0) { | |
823 | flags = mv_scan[block]; | |
824 | h->mv[flags ] = h->mv[MV_FWD_X0 ]; | |
825 | h->mv[flags + MV_BWD_OFFS] = h->mv[MV_FWD_X0 + MV_BWD_OFFS]; | |
826 | h->mv[MV_FWD_X0 ] = h->mv[TMP_UNUSED_INX ]; | |
827 | h->mv[MV_FWD_X0 + MV_BWD_OFFS] = h->mv[TMP_UNUSED_INX + MV_BWD_OFFS]; | |
828 | } else | |
829 | flags = MV_FWD_X0; | |
830 | } else { | |
831 | h->mv[mv_scan[block] ] = h->mv[flags ]; | |
832 | h->mv[mv_scan[block] + MV_BWD_OFFS] = h->mv[flags + MV_BWD_OFFS]; | |
833 | } | |
834 | } else | |
835 | mv_pred_direct(h, &h->mv[mv_scan[block]], | |
836 | &h->col_mv[h->mbidx * 4 + block]); | |
837 | break; | |
838 | case B_SUB_FWD: | |
839 | ff_cavs_mv(h, mv_scan[block], mv_scan[block] - 3, | |
840 | MV_PRED_MEDIAN, BLK_8X8, 1); | |
841 | break; | |
842 | case B_SUB_SYM: | |
843 | ff_cavs_mv(h, mv_scan[block], mv_scan[block] - 3, | |
844 | MV_PRED_MEDIAN, BLK_8X8, 1); | |
845 | mv_pred_sym(h, &h->mv[mv_scan[block]], BLK_8X8); | |
846 | break; | |
847 | } | |
848 | } | |
849 | #undef TMP_UNUSED_INX | |
850 | for (block = 0; block < 4; block++) { | |
851 | if (sub_type[block] == B_SUB_BWD) | |
852 | ff_cavs_mv(h, mv_scan[block] + MV_BWD_OFFS, | |
853 | mv_scan[block] + MV_BWD_OFFS - 3, | |
854 | MV_PRED_MEDIAN, BLK_8X8, 0); | |
855 | } | |
856 | break; | |
857 | default: | |
858 | if (mb_type <= B_SYM_16X16) { | |
859 | av_log(h->avctx, AV_LOG_ERROR, "Invalid mb_type %d in B frame\n", mb_type); | |
860 | return AVERROR_INVALIDDATA; | |
861 | } | |
862 | av_assert2(mb_type < B_8X8); | |
863 | flags = ff_cavs_partition_flags[mb_type]; | |
864 | if (mb_type & 1) { /* 16x8 macroblock types */ | |
865 | if (flags & FWD0) | |
866 | ff_cavs_mv(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_TOP, BLK_16X8, 1); | |
867 | if (flags & SYM0) | |
868 | mv_pred_sym(h, &h->mv[MV_FWD_X0], BLK_16X8); | |
869 | if (flags & FWD1) | |
870 | ff_cavs_mv(h, MV_FWD_X2, MV_FWD_A1, MV_PRED_LEFT, BLK_16X8, 1); | |
871 | if (flags & SYM1) | |
872 | mv_pred_sym(h, &h->mv[MV_FWD_X2], BLK_16X8); | |
873 | if (flags & BWD0) | |
874 | ff_cavs_mv(h, MV_BWD_X0, MV_BWD_C2, MV_PRED_TOP, BLK_16X8, 0); | |
875 | if (flags & BWD1) | |
876 | ff_cavs_mv(h, MV_BWD_X2, MV_BWD_A1, MV_PRED_LEFT, BLK_16X8, 0); | |
877 | } else { /* 8x16 macroblock types */ | |
878 | if (flags & FWD0) | |
879 | ff_cavs_mv(h, MV_FWD_X0, MV_FWD_B3, MV_PRED_LEFT, BLK_8X16, 1); | |
880 | if (flags & SYM0) | |
881 | mv_pred_sym(h, &h->mv[MV_FWD_X0], BLK_8X16); | |
882 | if (flags & FWD1) | |
883 | ff_cavs_mv(h, MV_FWD_X1, MV_FWD_C2, MV_PRED_TOPRIGHT, BLK_8X16, 1); | |
884 | if (flags & SYM1) | |
885 | mv_pred_sym(h, &h->mv[MV_FWD_X1], BLK_8X16); | |
886 | if (flags & BWD0) | |
887 | ff_cavs_mv(h, MV_BWD_X0, MV_BWD_B3, MV_PRED_LEFT, BLK_8X16, 0); | |
888 | if (flags & BWD1) | |
889 | ff_cavs_mv(h, MV_BWD_X1, MV_BWD_C2, MV_PRED_TOPRIGHT, BLK_8X16, 0); | |
890 | } | |
891 | } | |
892 | ff_cavs_inter(h, mb_type); | |
893 | set_intra_mode_default(h); | |
894 | if (mb_type != B_SKIP) | |
895 | decode_residual_inter(h); | |
896 | ff_cavs_filter(h, mb_type); | |
897 | ||
898 | return 0; | |
899 | } | |
900 | ||
901 | /***************************************************************************** | |
902 | * | |
903 | * slice level | |
904 | * | |
905 | ****************************************************************************/ | |
906 | ||
907 | static inline int decode_slice_header(AVSContext *h, GetBitContext *gb) | |
908 | { | |
909 | if (h->stc > 0xAF) | |
910 | av_log(h->avctx, AV_LOG_ERROR, "unexpected start code 0x%02x\n", h->stc); | |
911 | ||
912 | if (h->stc >= h->mb_height) { | |
913 | av_log(h->avctx, AV_LOG_ERROR, "stc 0x%02x is too large\n", h->stc); | |
914 | return AVERROR_INVALIDDATA; | |
915 | } | |
916 | ||
917 | h->mby = h->stc; | |
918 | h->mbidx = h->mby * h->mb_width; | |
919 | ||
920 | /* mark top macroblocks as unavailable */ | |
921 | h->flags &= ~(B_AVAIL | C_AVAIL); | |
922 | if (!h->pic_qp_fixed) { | |
923 | h->qp_fixed = get_bits1(gb); | |
924 | h->qp = get_bits(gb, 6); | |
925 | } | |
926 | /* inter frame or second slice can have weighting params */ | |
927 | if ((h->cur.f->pict_type != AV_PICTURE_TYPE_I) || | |
928 | (!h->pic_structure && h->mby >= h->mb_width / 2)) | |
929 | if (get_bits1(gb)) { //slice_weighting_flag | |
930 | av_log(h->avctx, AV_LOG_ERROR, | |
931 | "weighted prediction not yet supported\n"); | |
932 | } | |
933 | return 0; | |
934 | } | |
935 | ||
936 | static inline int check_for_slice(AVSContext *h) | |
937 | { | |
938 | GetBitContext *gb = &h->gb; | |
939 | int align; | |
940 | ||
941 | if (h->mbx) | |
942 | return 0; | |
943 | align = (-get_bits_count(gb)) & 7; | |
944 | /* check for stuffing byte */ | |
945 | if (!align && (show_bits(gb, 8) == 0x80)) | |
946 | align = 8; | |
947 | if ((show_bits_long(gb, 24 + align) & 0xFFFFFF) == 0x000001) { | |
948 | skip_bits_long(gb, 24 + align); | |
949 | h->stc = get_bits(gb, 8); | |
950 | if (h->stc >= h->mb_height) | |
951 | return 0; | |
952 | decode_slice_header(h, gb); | |
953 | return 1; | |
954 | } | |
955 | return 0; | |
956 | } | |
957 | ||
958 | /***************************************************************************** | |
959 | * | |
960 | * frame level | |
961 | * | |
962 | ****************************************************************************/ | |
963 | ||
964 | static int decode_pic(AVSContext *h) | |
965 | { | |
966 | int ret; | |
967 | int skip_count = -1; | |
968 | enum cavs_mb mb_type; | |
969 | ||
970 | if (!h->top_qp) { | |
971 | av_log(h->avctx, AV_LOG_ERROR, "No sequence header decoded yet\n"); | |
972 | return AVERROR_INVALIDDATA; | |
973 | } | |
974 | ||
975 | av_frame_unref(h->cur.f); | |
976 | ||
977 | skip_bits(&h->gb, 16);//bbv_dwlay | |
978 | if (h->stc == PIC_PB_START_CODE) { | |
979 | h->cur.f->pict_type = get_bits(&h->gb, 2) + AV_PICTURE_TYPE_I; | |
980 | if (h->cur.f->pict_type > AV_PICTURE_TYPE_B) { | |
981 | av_log(h->avctx, AV_LOG_ERROR, "illegal picture type\n"); | |
982 | return AVERROR_INVALIDDATA; | |
983 | } | |
984 | /* make sure we have the reference frames we need */ | |
985 | if (!h->DPB[0].f->data[0] || | |
986 | (!h->DPB[1].f->data[0] && h->cur.f->pict_type == AV_PICTURE_TYPE_B)) | |
987 | return AVERROR_INVALIDDATA; | |
988 | } else { | |
989 | h->cur.f->pict_type = AV_PICTURE_TYPE_I; | |
990 | if (get_bits1(&h->gb)) | |
991 | skip_bits(&h->gb, 24);//time_code | |
992 | /* old sample clips were all progressive and no low_delay, | |
993 | bump stream revision if detected otherwise */ | |
994 | if (h->low_delay || !(show_bits(&h->gb, 9) & 1)) | |
995 | h->stream_revision = 1; | |
996 | /* similarly test top_field_first and repeat_first_field */ | |
997 | else if (show_bits(&h->gb, 11) & 3) | |
998 | h->stream_revision = 1; | |
999 | if (h->stream_revision > 0) | |
1000 | skip_bits(&h->gb, 1); //marker_bit | |
1001 | } | |
1002 | ||
1003 | ret = ff_get_buffer(h->avctx, h->cur.f, h->cur.f->pict_type == AV_PICTURE_TYPE_B ? | |
1004 | 0 : AV_GET_BUFFER_FLAG_REF); | |
1005 | if (ret < 0) | |
1006 | return ret; | |
1007 | ||
1008 | if (!h->edge_emu_buffer) { | |
1009 | int alloc_size = FFALIGN(FFABS(h->cur.f->linesize[0]) + 32, 32); | |
1010 | h->edge_emu_buffer = av_mallocz(alloc_size * 2 * 24); | |
1011 | if (!h->edge_emu_buffer) | |
1012 | return AVERROR(ENOMEM); | |
1013 | } | |
1014 | ||
1015 | if ((ret = ff_cavs_init_pic(h)) < 0) | |
1016 | return ret; | |
1017 | h->cur.poc = get_bits(&h->gb, 8) * 2; | |
1018 | ||
1019 | /* get temporal distances and MV scaling factors */ | |
1020 | if (h->cur.f->pict_type != AV_PICTURE_TYPE_B) { | |
1021 | h->dist[0] = (h->cur.poc - h->DPB[0].poc) & 511; | |
1022 | } else { | |
1023 | h->dist[0] = (h->DPB[0].poc - h->cur.poc) & 511; | |
1024 | } | |
1025 | h->dist[1] = (h->cur.poc - h->DPB[1].poc) & 511; | |
1026 | h->scale_den[0] = h->dist[0] ? 512/h->dist[0] : 0; | |
1027 | h->scale_den[1] = h->dist[1] ? 512/h->dist[1] : 0; | |
1028 | if (h->cur.f->pict_type == AV_PICTURE_TYPE_B) { | |
1029 | h->sym_factor = h->dist[0] * h->scale_den[1]; | |
1030 | } else { | |
1031 | h->direct_den[0] = h->dist[0] ? 16384 / h->dist[0] : 0; | |
1032 | h->direct_den[1] = h->dist[1] ? 16384 / h->dist[1] : 0; | |
1033 | } | |
1034 | ||
1035 | if (h->low_delay) | |
1036 | get_ue_golomb(&h->gb); //bbv_check_times | |
1037 | h->progressive = get_bits1(&h->gb); | |
1038 | h->pic_structure = 1; | |
1039 | if (!h->progressive) | |
1040 | h->pic_structure = get_bits1(&h->gb); | |
1041 | if (!h->pic_structure && h->stc == PIC_PB_START_CODE) | |
1042 | skip_bits1(&h->gb); //advanced_pred_mode_disable | |
1043 | skip_bits1(&h->gb); //top_field_first | |
1044 | skip_bits1(&h->gb); //repeat_first_field | |
1045 | h->pic_qp_fixed = | |
1046 | h->qp_fixed = get_bits1(&h->gb); | |
1047 | h->qp = get_bits(&h->gb, 6); | |
1048 | if (h->cur.f->pict_type == AV_PICTURE_TYPE_I) { | |
1049 | if (!h->progressive && !h->pic_structure) | |
1050 | skip_bits1(&h->gb);//what is this? | |
1051 | skip_bits(&h->gb, 4); //reserved bits | |
1052 | } else { | |
1053 | if (!(h->cur.f->pict_type == AV_PICTURE_TYPE_B && h->pic_structure == 1)) | |
1054 | h->ref_flag = get_bits1(&h->gb); | |
1055 | skip_bits(&h->gb, 4); //reserved bits | |
1056 | h->skip_mode_flag = get_bits1(&h->gb); | |
1057 | } | |
1058 | h->loop_filter_disable = get_bits1(&h->gb); | |
1059 | if (!h->loop_filter_disable && get_bits1(&h->gb)) { | |
1060 | h->alpha_offset = get_se_golomb(&h->gb); | |
1061 | h->beta_offset = get_se_golomb(&h->gb); | |
1062 | } else { | |
1063 | h->alpha_offset = h->beta_offset = 0; | |
1064 | } | |
1065 | if (h->cur.f->pict_type == AV_PICTURE_TYPE_I) { | |
1066 | do { | |
1067 | check_for_slice(h); | |
1068 | decode_mb_i(h, 0); | |
1069 | } while (ff_cavs_next_mb(h)); | |
1070 | } else if (h->cur.f->pict_type == AV_PICTURE_TYPE_P) { | |
1071 | do { | |
1072 | if (check_for_slice(h)) | |
1073 | skip_count = -1; | |
1074 | if (h->skip_mode_flag && (skip_count < 0)) | |
1075 | skip_count = get_ue_golomb(&h->gb); | |
1076 | if (h->skip_mode_flag && skip_count--) { | |
1077 | decode_mb_p(h, P_SKIP); | |
1078 | } else { | |
1079 | mb_type = get_ue_golomb(&h->gb) + P_SKIP + h->skip_mode_flag; | |
1080 | if (mb_type > P_8X8) | |
1081 | decode_mb_i(h, mb_type - P_8X8 - 1); | |
1082 | else | |
1083 | decode_mb_p(h, mb_type); | |
1084 | } | |
1085 | } while (ff_cavs_next_mb(h)); | |
1086 | } else { /* AV_PICTURE_TYPE_B */ | |
1087 | do { | |
1088 | if (check_for_slice(h)) | |
1089 | skip_count = -1; | |
1090 | if (h->skip_mode_flag && (skip_count < 0)) | |
1091 | skip_count = get_ue_golomb(&h->gb); | |
1092 | if (h->skip_mode_flag && skip_count--) { | |
1093 | decode_mb_b(h, B_SKIP); | |
1094 | } else { | |
1095 | mb_type = get_ue_golomb(&h->gb) + B_SKIP + h->skip_mode_flag; | |
1096 | if (mb_type > B_8X8) | |
1097 | decode_mb_i(h, mb_type - B_8X8 - 1); | |
1098 | else | |
1099 | decode_mb_b(h, mb_type); | |
1100 | } | |
1101 | } while (ff_cavs_next_mb(h)); | |
1102 | } | |
1103 | if (h->cur.f->pict_type != AV_PICTURE_TYPE_B) { | |
1104 | av_frame_unref(h->DPB[1].f); | |
1105 | FFSWAP(AVSFrame, h->cur, h->DPB[1]); | |
1106 | FFSWAP(AVSFrame, h->DPB[0], h->DPB[1]); | |
1107 | } | |
1108 | return 0; | |
1109 | } | |
1110 | ||
1111 | /***************************************************************************** | |
1112 | * | |
1113 | * headers and interface | |
1114 | * | |
1115 | ****************************************************************************/ | |
1116 | ||
1117 | static int decode_seq_header(AVSContext *h) | |
1118 | { | |
1119 | int frame_rate_code; | |
1120 | int width, height; | |
1121 | ||
1122 | h->profile = get_bits(&h->gb, 8); | |
1123 | h->level = get_bits(&h->gb, 8); | |
1124 | skip_bits1(&h->gb); //progressive sequence | |
1125 | ||
1126 | width = get_bits(&h->gb, 14); | |
1127 | height = get_bits(&h->gb, 14); | |
1128 | if ((h->width || h->height) && (h->width != width || h->height != height)) { | |
1129 | avpriv_report_missing_feature(h->avctx, | |
1130 | "Width/height changing in CAVS"); | |
1131 | return AVERROR_PATCHWELCOME; | |
1132 | } | |
1133 | if (width <= 0 || height <= 0) { | |
1134 | av_log(h->avctx, AV_LOG_ERROR, "Dimensions invalid\n"); | |
1135 | return AVERROR_INVALIDDATA; | |
1136 | } | |
1137 | h->width = width; | |
1138 | h->height = height; | |
1139 | ||
1140 | skip_bits(&h->gb, 2); //chroma format | |
1141 | skip_bits(&h->gb, 3); //sample_precision | |
1142 | h->aspect_ratio = get_bits(&h->gb, 4); | |
1143 | frame_rate_code = get_bits(&h->gb, 4); | |
1144 | skip_bits(&h->gb, 18); //bit_rate_lower | |
1145 | skip_bits1(&h->gb); //marker_bit | |
1146 | skip_bits(&h->gb, 12); //bit_rate_upper | |
1147 | h->low_delay = get_bits1(&h->gb); | |
1148 | h->mb_width = (h->width + 15) >> 4; | |
1149 | h->mb_height = (h->height + 15) >> 4; | |
f6fa7814 | 1150 | h->avctx->framerate = ff_mpeg12_frame_rate_tab[frame_rate_code]; |
2ba45a60 DM |
1151 | h->avctx->width = h->width; |
1152 | h->avctx->height = h->height; | |
1153 | if (!h->top_qp) | |
1154 | ff_cavs_init_top_lines(h); | |
1155 | return 0; | |
1156 | } | |
1157 | ||
1158 | static void cavs_flush(AVCodecContext * avctx) | |
1159 | { | |
1160 | AVSContext *h = avctx->priv_data; | |
1161 | h->got_keyframe = 0; | |
1162 | } | |
1163 | ||
1164 | static int cavs_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, | |
1165 | AVPacket *avpkt) | |
1166 | { | |
1167 | AVSContext *h = avctx->priv_data; | |
1168 | const uint8_t *buf = avpkt->data; | |
1169 | int buf_size = avpkt->size; | |
1170 | uint32_t stc = -1; | |
1171 | int input_size, ret; | |
1172 | const uint8_t *buf_end; | |
1173 | const uint8_t *buf_ptr; | |
1174 | ||
1175 | if (buf_size == 0) { | |
1176 | if (!h->low_delay && h->DPB[0].f->data[0]) { | |
1177 | *got_frame = 1; | |
1178 | av_frame_move_ref(data, h->DPB[0].f); | |
1179 | } | |
1180 | return 0; | |
1181 | } | |
1182 | ||
1183 | h->stc = 0; | |
1184 | ||
1185 | buf_ptr = buf; | |
1186 | buf_end = buf + buf_size; | |
1187 | for(;;) { | |
1188 | buf_ptr = avpriv_find_start_code(buf_ptr, buf_end, &stc); | |
1189 | if ((stc & 0xFFFFFE00) || buf_ptr == buf_end) { | |
1190 | if (!h->stc) | |
1191 | av_log(h->avctx, AV_LOG_WARNING, "no frame decoded\n"); | |
1192 | return FFMAX(0, buf_ptr - buf); | |
1193 | } | |
1194 | input_size = (buf_end - buf_ptr) * 8; | |
1195 | switch (stc) { | |
1196 | case CAVS_START_CODE: | |
1197 | init_get_bits(&h->gb, buf_ptr, input_size); | |
1198 | decode_seq_header(h); | |
1199 | break; | |
1200 | case PIC_I_START_CODE: | |
1201 | if (!h->got_keyframe) { | |
1202 | av_frame_unref(h->DPB[0].f); | |
1203 | av_frame_unref(h->DPB[1].f); | |
1204 | h->got_keyframe = 1; | |
1205 | } | |
1206 | case PIC_PB_START_CODE: | |
1207 | *got_frame = 0; | |
1208 | if (!h->got_keyframe) | |
1209 | break; | |
1210 | init_get_bits(&h->gb, buf_ptr, input_size); | |
1211 | h->stc = stc; | |
1212 | if (decode_pic(h)) | |
1213 | break; | |
1214 | *got_frame = 1; | |
1215 | if (h->cur.f->pict_type != AV_PICTURE_TYPE_B) { | |
1216 | if (h->DPB[!h->low_delay].f->data[0]) { | |
1217 | if ((ret = av_frame_ref(data, h->DPB[!h->low_delay].f)) < 0) | |
1218 | return ret; | |
1219 | } else { | |
1220 | *got_frame = 0; | |
1221 | } | |
1222 | } else { | |
1223 | av_frame_move_ref(data, h->cur.f); | |
1224 | } | |
1225 | break; | |
1226 | case EXT_START_CODE: | |
1227 | //mpeg_decode_extension(avctx, buf_ptr, input_size); | |
1228 | break; | |
1229 | case USER_START_CODE: | |
1230 | //mpeg_decode_user_data(avctx, buf_ptr, input_size); | |
1231 | break; | |
1232 | default: | |
1233 | if (stc <= SLICE_MAX_START_CODE) { | |
1234 | init_get_bits(&h->gb, buf_ptr, input_size); | |
1235 | decode_slice_header(h, &h->gb); | |
1236 | } | |
1237 | break; | |
1238 | } | |
1239 | } | |
1240 | } | |
1241 | ||
1242 | AVCodec ff_cavs_decoder = { | |
1243 | .name = "cavs", | |
1244 | .long_name = NULL_IF_CONFIG_SMALL("Chinese AVS (Audio Video Standard) (AVS1-P2, JiZhun profile)"), | |
1245 | .type = AVMEDIA_TYPE_VIDEO, | |
1246 | .id = AV_CODEC_ID_CAVS, | |
1247 | .priv_data_size = sizeof(AVSContext), | |
1248 | .init = ff_cavs_init, | |
1249 | .close = ff_cavs_end, | |
1250 | .decode = cavs_decode_frame, | |
1251 | .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DELAY, | |
1252 | .flush = cavs_flush, | |
1253 | }; |