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