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5619071a1039dda0733f7aa82bf0755e0255198a
[libav.git] / libavcodec / cavsdec.c
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
22 /**
23 * @file
24 * Chinese AVS video (AVS1-P2, JiZhun profile) decoder
25 * @author Stefan Gehrer <stefan.gehrer@gmx.de>
26 */
27
28 #include "avcodec.h"
29 #include "get_bits.h"
30 #include "golomb.h"
31 #include "cavs.h"
32 #include "internal.h"
33
34 static const uint8_t mv_scan[4] = {
35 MV_FWD_X0,MV_FWD_X1,
36 MV_FWD_X2,MV_FWD_X3
37 };
38
39 static const uint8_t cbp_tab[64][2] = {
40 {63, 0},{15,15},{31,63},{47,31},{ 0,16},{14,32},{13,47},{11,13},
41 { 7,14},{ 5,11},{10,12},{ 8, 5},{12,10},{61, 7},{ 4,48},{55, 3},
42 { 1, 2},{ 2, 8},{59, 4},{ 3, 1},{62,61},{ 9,55},{ 6,59},{29,62},
43 {45,29},{51,27},{23,23},{39,19},{27,30},{46,28},{53, 9},{30, 6},
44 {43,60},{37,21},{60,44},{16,26},{21,51},{28,35},{19,18},{35,20},
45 {42,24},{26,53},{44,17},{32,37},{58,39},{24,45},{20,58},{17,43},
46 {18,42},{48,46},{22,36},{33,33},{25,34},{49,40},{40,52},{36,49},
47 {34,50},{50,56},{52,25},{54,22},{41,54},{56,57},{38,41},{57,38}
48 };
49
50 static const uint8_t scan3x3[4] = { 4, 5, 7, 8 };
51
52 static const uint8_t cavs_chroma_qp[64] = {
53 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,12,13,14,15,
54 16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,
55 32,33,34,35,36,37,38,39,40,41,42,42,43,43,44,44,
56 45,45,46,46,47,47,48,48,48,49,49,49,50,50,50,51
57 };
58
59 static const uint8_t dequant_shift[64] = {
60 14,14,14,14,14,14,14,14,
61 13,13,13,13,13,13,13,13,
62 13,12,12,12,12,12,12,12,
63 11,11,11,11,11,11,11,11,
64 11,10,10,10,10,10,10,10,
65 10, 9, 9, 9, 9, 9, 9, 9,
66 9, 8, 8, 8, 8, 8, 8, 8,
67 7, 7, 7, 7, 7, 7, 7, 7
68 };
69
70 static const uint16_t dequant_mul[64] = {
71 32768,36061,38968,42495,46341,50535,55437,60424,
72 32932,35734,38968,42495,46177,50535,55109,59933,
73 65535,35734,38968,42577,46341,50617,55027,60097,
74 32809,35734,38968,42454,46382,50576,55109,60056,
75 65535,35734,38968,42495,46320,50515,55109,60076,
76 65535,35744,38968,42495,46341,50535,55099,60087,
77 65535,35734,38973,42500,46341,50535,55109,60097,
78 32771,35734,38965,42497,46341,50535,55109,60099
79 };
80
81 #define EOB 0,0,0
82
83 static const struct dec_2dvlc intra_dec[7] = {
84 {
85 { //level / run / table_inc
86 { 1, 1, 1},{ -1, 1, 1},{ 1, 2, 1},{ -1, 2, 1},{ 1, 3, 1},{ -1, 3, 1},
87 { 1, 4, 1},{ -1, 4, 1},{ 1, 5, 1},{ -1, 5, 1},{ 1, 6, 1},{ -1, 6, 1},
88 { 1, 7, 1},{ -1, 7, 1},{ 1, 8, 1},{ -1, 8, 1},{ 1, 9, 1},{ -1, 9, 1},
89 { 1,10, 1},{ -1,10, 1},{ 1,11, 1},{ -1,11, 1},{ 2, 1, 2},{ -2, 1, 2},
90 { 1,12, 1},{ -1,12, 1},{ 1,13, 1},{ -1,13, 1},{ 1,14, 1},{ -1,14, 1},
91 { 1,15, 1},{ -1,15, 1},{ 2, 2, 2},{ -2, 2, 2},{ 1,16, 1},{ -1,16, 1},
92 { 1,17, 1},{ -1,17, 1},{ 3, 1, 3},{ -3, 1, 3},{ 1,18, 1},{ -1,18, 1},
93 { 1,19, 1},{ -1,19, 1},{ 2, 3, 2},{ -2, 3, 2},{ 1,20, 1},{ -1,20, 1},
94 { 1,21, 1},{ -1,21, 1},{ 2, 4, 2},{ -2, 4, 2},{ 1,22, 1},{ -1,22, 1},
95 { 2, 5, 2},{ -2, 5, 2},{ 1,23, 1},{ -1,23, 1},{ EOB }
96 },
97 //level_add
98 { 0, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
99 2, 2, 2, 2, 2, 2, 2,-1,-1,-1},
100 2, //golomb_order
101 0, //inc_limit
102 23, //max_run
103 },{
104 { //level / run
105 { 1, 1, 0},{ -1, 1, 0},{ 1, 2, 0},{ -1, 2, 0},{ 2, 1, 1},{ -2, 1, 1},
106 { 1, 3, 0},{ -1, 3, 0},{ EOB },{ 1, 4, 0},{ -1, 4, 0},{ 1, 5, 0},
107 { -1, 5, 0},{ 1, 6, 0},{ -1, 6, 0},{ 3, 1, 2},{ -3, 1, 2},{ 2, 2, 1},
108 { -2, 2, 1},{ 1, 7, 0},{ -1, 7, 0},{ 1, 8, 0},{ -1, 8, 0},{ 1, 9, 0},
109 { -1, 9, 0},{ 2, 3, 1},{ -2, 3, 1},{ 4, 1, 2},{ -4, 1, 2},{ 1,10, 0},
110 { -1,10, 0},{ 1,11, 0},{ -1,11, 0},{ 2, 4, 1},{ -2, 4, 1},{ 3, 2, 2},
111 { -3, 2, 2},{ 1,12, 0},{ -1,12, 0},{ 2, 5, 1},{ -2, 5, 1},{ 5, 1, 3},
112 { -5, 1, 3},{ 1,13, 0},{ -1,13, 0},{ 2, 6, 1},{ -2, 6, 1},{ 1,14, 0},
113 { -1,14, 0},{ 2, 7, 1},{ -2, 7, 1},{ 2, 8, 1},{ -2, 8, 1},{ 3, 3, 2},
114 { -3, 3, 2},{ 6, 1, 3},{ -6, 1, 3},{ 1,15, 0},{ -1,15, 0}
115 },
116 //level_add
117 { 0, 7, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2,-1,
118 -1,-1,-1,-1,-1,-1,-1,-1,-1,-1},
119 2, //golomb_order
120 1, //inc_limit
121 15, //max_run
122 },{
123 { //level / run
124 { 1, 1, 0},{ -1, 1, 0},{ 2, 1, 0},{ -2, 1, 0},{ 1, 2, 0},{ -1, 2, 0},
125 { 3, 1, 1},{ -3, 1, 1},{ EOB },{ 1, 3, 0},{ -1, 3, 0},{ 2, 2, 0},
126 { -2, 2, 0},{ 4, 1, 1},{ -4, 1, 1},{ 1, 4, 0},{ -1, 4, 0},{ 5, 1, 2},
127 { -5, 1, 2},{ 1, 5, 0},{ -1, 5, 0},{ 3, 2, 1},{ -3, 2, 1},{ 2, 3, 0},
128 { -2, 3, 0},{ 1, 6, 0},{ -1, 6, 0},{ 6, 1, 2},{ -6, 1, 2},{ 2, 4, 0},
129 { -2, 4, 0},{ 1, 7, 0},{ -1, 7, 0},{ 4, 2, 1},{ -4, 2, 1},{ 7, 1, 2},
130 { -7, 1, 2},{ 3, 3, 1},{ -3, 3, 1},{ 2, 5, 0},{ -2, 5, 0},{ 1, 8, 0},
131 { -1, 8, 0},{ 2, 6, 0},{ -2, 6, 0},{ 8, 1, 3},{ -8, 1, 3},{ 1, 9, 0},
132 { -1, 9, 0},{ 5, 2, 2},{ -5, 2, 2},{ 3, 4, 1},{ -3, 4, 1},{ 2, 7, 0},
133 { -2, 7, 0},{ 9, 1, 3},{ -9, 1, 3},{ 1,10, 0},{ -1,10, 0}
134 },
135 //level_add
136 { 0,10, 6, 4, 4, 3, 3, 3, 2, 2, 2,-1,-1,-1,-1,-1,-1,
137 -1,-1,-1,-1,-1,-1,-1,-1,-1,-1},
138 2, //golomb_order
139 2, //inc_limit
140 10, //max_run
141 },{
142 { //level / run
143 { 1, 1, 0},{ -1, 1, 0},{ 2, 1, 0},{ -2, 1, 0},{ 3, 1, 0},{ -3, 1, 0},
144 { 1, 2, 0},{ -1, 2, 0},{ EOB },{ 4, 1, 0},{ -4, 1, 0},{ 5, 1, 1},
145 { -5, 1, 1},{ 2, 2, 0},{ -2, 2, 0},{ 1, 3, 0},{ -1, 3, 0},{ 6, 1, 1},
146 { -6, 1, 1},{ 3, 2, 0},{ -3, 2, 0},{ 7, 1, 1},{ -7, 1, 1},{ 1, 4, 0},
147 { -1, 4, 0},{ 8, 1, 2},{ -8, 1, 2},{ 2, 3, 0},{ -2, 3, 0},{ 4, 2, 0},
148 { -4, 2, 0},{ 1, 5, 0},{ -1, 5, 0},{ 9, 1, 2},{ -9, 1, 2},{ 5, 2, 1},
149 { -5, 2, 1},{ 2, 4, 0},{ -2, 4, 0},{ 10, 1, 2},{-10, 1, 2},{ 3, 3, 0},
150 { -3, 3, 0},{ 1, 6, 0},{ -1, 6, 0},{ 11, 1, 3},{-11, 1, 3},{ 6, 2, 1},
151 { -6, 2, 1},{ 1, 7, 0},{ -1, 7, 0},{ 2, 5, 0},{ -2, 5, 0},{ 3, 4, 0},
152 { -3, 4, 0},{ 12, 1, 3},{-12, 1, 3},{ 4, 3, 0},{ -4, 3, 0}
153 },
154 //level_add
155 { 0,13, 7, 5, 4, 3, 2, 2,-1,-1,-1 -1,-1,-1,-1,-1,-1,
156 -1,-1,-1,-1,-1,-1,-1,-1,-1,-1},
157 2, //golomb_order
158 4, //inc_limit
159 7, //max_run
160 },{
161 { //level / run
162 { 1, 1, 0},{ -1, 1, 0},{ 2, 1, 0},{ -2, 1, 0},{ 3, 1, 0},{ -3, 1, 0},
163 { EOB },{ 4, 1, 0},{ -4, 1, 0},{ 5, 1, 0},{ -5, 1, 0},{ 6, 1, 0},
164 { -6, 1, 0},{ 1, 2, 0},{ -1, 2, 0},{ 7, 1, 0},{ -7, 1, 0},{ 8, 1, 1},
165 { -8, 1, 1},{ 2, 2, 0},{ -2, 2, 0},{ 9, 1, 1},{ -9, 1, 1},{ 10, 1, 1},
166 {-10, 1, 1},{ 1, 3, 0},{ -1, 3, 0},{ 3, 2, 0},{ -3, 2, 0},{ 11, 1, 2},
167 {-11, 1, 2},{ 4, 2, 0},{ -4, 2, 0},{ 12, 1, 2},{-12, 1, 2},{ 13, 1, 2},
168 {-13, 1, 2},{ 5, 2, 0},{ -5, 2, 0},{ 1, 4, 0},{ -1, 4, 0},{ 2, 3, 0},
169 { -2, 3, 0},{ 14, 1, 2},{-14, 1, 2},{ 6, 2, 0},{ -6, 2, 0},{ 15, 1, 2},
170 {-15, 1, 2},{ 16, 1, 2},{-16, 1, 2},{ 3, 3, 0},{ -3, 3, 0},{ 1, 5, 0},
171 { -1, 5, 0},{ 7, 2, 0},{ -7, 2, 0},{ 17, 1, 2},{-17, 1, 2}
172 },
173 //level_add
174 { 0,18, 8, 4, 2, 2,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
175 -1,-1,-1,-1,-1,-1,-1,-1,-1,-1},
176 2, //golomb_order
177 7, //inc_limit
178 5, //max_run
179 },{
180 { //level / run
181 { EOB },{ 1, 1, 0},{ -1, 1, 0},{ 2, 1, 0},{ -2, 1, 0},{ 3, 1, 0},
182 { -3, 1, 0},{ 4, 1, 0},{ -4, 1, 0},{ 5, 1, 0},{ -5, 1, 0},{ 6, 1, 0},
183 { -6, 1, 0},{ 7, 1, 0},{ -7, 1, 0},{ 8, 1, 0},{ -8, 1, 0},{ 9, 1, 0},
184 { -9, 1, 0},{ 10, 1, 0},{-10, 1, 0},{ 1, 2, 0},{ -1, 2, 0},{ 11, 1, 1},
185 {-11, 1, 1},{ 12, 1, 1},{-12, 1, 1},{ 13, 1, 1},{-13, 1, 1},{ 2, 2, 0},
186 { -2, 2, 0},{ 14, 1, 1},{-14, 1, 1},{ 15, 1, 1},{-15, 1, 1},{ 3, 2, 0},
187 { -3, 2, 0},{ 16, 1, 1},{-16, 1, 1},{ 1, 3, 0},{ -1, 3, 0},{ 17, 1, 1},
188 {-17, 1, 1},{ 4, 2, 0},{ -4, 2, 0},{ 18, 1, 1},{-18, 1, 1},{ 5, 2, 0},
189 { -5, 2, 0},{ 19, 1, 1},{-19, 1, 1},{ 20, 1, 1},{-20, 1, 1},{ 6, 2, 0},
190 { -6, 2, 0},{ 21, 1, 1},{-21, 1, 1},{ 2, 3, 0},{ -2, 3, 0}
191 },
192 //level_add
193 { 0,22, 7, 3,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
194 -1,-1,-1,-1,-1,-1,-1,-1,-1,-1},
195 2, //golomb_order
196 10, //inc_limit
197 3, //max_run
198 },{
199 { //level / run
200 { EOB },{ 1, 1, 0},{ -1, 1, 0},{ 2, 1, 0},{ -2, 1, 0},{ 3, 1, 0},
201 { -3, 1, 0},{ 4, 1, 0},{ -4, 1, 0},{ 5, 1, 0},{ -5, 1, 0},{ 6, 1, 0},
202 { -6, 1, 0},{ 7, 1, 0},{ -7, 1, 0},{ 8, 1, 0},{ -8, 1, 0},{ 9, 1, 0},
203 { -9, 1, 0},{ 10, 1, 0},{-10, 1, 0},{ 11, 1, 0},{-11, 1, 0},{ 12, 1, 0},
204 {-12, 1, 0},{ 13, 1, 0},{-13, 1, 0},{ 14, 1, 0},{-14, 1, 0},{ 15, 1, 0},
205 {-15, 1, 0},{ 16, 1, 0},{-16, 1, 0},{ 1, 2, 0},{ -1, 2, 0},{ 17, 1, 0},
206 {-17, 1, 0},{ 18, 1, 0},{-18, 1, 0},{ 19, 1, 0},{-19, 1, 0},{ 20, 1, 0},
207 {-20, 1, 0},{ 21, 1, 0},{-21, 1, 0},{ 2, 2, 0},{ -2, 2, 0},{ 22, 1, 0},
208 {-22, 1, 0},{ 23, 1, 0},{-23, 1, 0},{ 24, 1, 0},{-24, 1, 0},{ 25, 1, 0},
209 {-25, 1, 0},{ 3, 2, 0},{ -3, 2, 0},{ 26, 1, 0},{-26, 1, 0}
210 },
211 //level_add
212 { 0,27, 4,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
213 -1,-1,-1,-1,-1,-1,-1,-1,-1,-1},
214 2, //golomb_order
215 INT_MAX, //inc_limit
216 2, //max_run
217 }
218 };
219
220 static const struct dec_2dvlc inter_dec[7] = {
221 {
222 { //level / run
223 { 1, 1, 1},{ -1, 1, 1},{ 1, 2, 1},{ -1, 2, 1},{ 1, 3, 1},{ -1, 3, 1},
224 { 1, 4, 1},{ -1, 4, 1},{ 1, 5, 1},{ -1, 5, 1},{ 1, 6, 1},{ -1, 6, 1},
225 { 1, 7, 1},{ -1, 7, 1},{ 1, 8, 1},{ -1, 8, 1},{ 1, 9, 1},{ -1, 9, 1},
226 { 1,10, 1},{ -1,10, 1},{ 1,11, 1},{ -1,11, 1},{ 1,12, 1},{ -1,12, 1},
227 { 1,13, 1},{ -1,13, 1},{ 2, 1, 2},{ -2, 1, 2},{ 1,14, 1},{ -1,14, 1},
228 { 1,15, 1},{ -1,15, 1},{ 1,16, 1},{ -1,16, 1},{ 1,17, 1},{ -1,17, 1},
229 { 1,18, 1},{ -1,18, 1},{ 1,19, 1},{ -1,19, 1},{ 3, 1, 3},{ -3, 1, 3},
230 { 1,20, 1},{ -1,20, 1},{ 1,21, 1},{ -1,21, 1},{ 2, 2, 2},{ -2, 2, 2},
231 { 1,22, 1},{ -1,22, 1},{ 1,23, 1},{ -1,23, 1},{ 1,24, 1},{ -1,24, 1},
232 { 1,25, 1},{ -1,25, 1},{ 1,26, 1},{ -1,26, 1},{ EOB }
233 },
234 //level_add
235 { 0, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
236 2, 2, 2, 2, 2, 2, 2, 2, 2, 2},
237 3, //golomb_order
238 0, //inc_limit
239 26 //max_run
240 },{
241 { //level / run
242 { 1, 1, 0},{ -1, 1, 0},{ EOB },{ 1, 2, 0},{ -1, 2, 0},{ 1, 3, 0},
243 { -1, 3, 0},{ 1, 4, 0},{ -1, 4, 0},{ 1, 5, 0},{ -1, 5, 0},{ 1, 6, 0},
244 { -1, 6, 0},{ 2, 1, 1},{ -2, 1, 1},{ 1, 7, 0},{ -1, 7, 0},{ 1, 8, 0},
245 { -1, 8, 0},{ 1, 9, 0},{ -1, 9, 0},{ 1,10, 0},{ -1,10, 0},{ 2, 2, 1},
246 { -2, 2, 1},{ 1,11, 0},{ -1,11, 0},{ 1,12, 0},{ -1,12, 0},{ 3, 1, 2},
247 { -3, 1, 2},{ 1,13, 0},{ -1,13, 0},{ 1,14, 0},{ -1,14, 0},{ 2, 3, 1},
248 { -2, 3, 1},{ 1,15, 0},{ -1,15, 0},{ 2, 4, 1},{ -2, 4, 1},{ 1,16, 0},
249 { -1,16, 0},{ 2, 5, 1},{ -2, 5, 1},{ 1,17, 0},{ -1,17, 0},{ 4, 1, 3},
250 { -4, 1, 3},{ 2, 6, 1},{ -2, 6, 1},{ 1,18, 0},{ -1,18, 0},{ 1,19, 0},
251 { -1,19, 0},{ 2, 7, 1},{ -2, 7, 1},{ 3, 2, 2},{ -3, 2, 2}
252 },
253 //level_add
254 { 0, 5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2,
255 2, 2, 2,-1,-1,-1,-1,-1,-1,-1},
256 2, //golomb_order
257 1, //inc_limit
258 19 //max_run
259 },{
260 { //level / run
261 { 1, 1, 0},{ -1, 1, 0},{ EOB },{ 1, 2, 0},{ -1, 2, 0},{ 2, 1, 0},
262 { -2, 1, 0},{ 1, 3, 0},{ -1, 3, 0},{ 1, 4, 0},{ -1, 4, 0},{ 3, 1, 1},
263 { -3, 1, 1},{ 2, 2, 0},{ -2, 2, 0},{ 1, 5, 0},{ -1, 5, 0},{ 1, 6, 0},
264 { -1, 6, 0},{ 1, 7, 0},{ -1, 7, 0},{ 2, 3, 0},{ -2, 3, 0},{ 4, 1, 2},
265 { -4, 1, 2},{ 1, 8, 0},{ -1, 8, 0},{ 3, 2, 1},{ -3, 2, 1},{ 2, 4, 0},
266 { -2, 4, 0},{ 1, 9, 0},{ -1, 9, 0},{ 1,10, 0},{ -1,10, 0},{ 5, 1, 2},
267 { -5, 1, 2},{ 2, 5, 0},{ -2, 5, 0},{ 1,11, 0},{ -1,11, 0},{ 2, 6, 0},
268 { -2, 6, 0},{ 1,12, 0},{ -1,12, 0},{ 3, 3, 1},{ -3, 3, 1},{ 6, 1, 2},
269 { -6, 1, 2},{ 4, 2, 2},{ -4, 2, 2},{ 1,13, 0},{ -1,13, 0},{ 2, 7, 0},
270 { -2, 7, 0},{ 3, 4, 1},{ -3, 4, 1},{ 1,14, 0},{ -1,14, 0}
271 },
272 //level_add
273 { 0, 7, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2,-1,-1,
274 -1,-1,-1,-1,-1,-1,-1,-1,-1,-1},
275 2, //golomb_order
276 2, //inc_limit
277 14 //max_run
278 },{
279 { //level / run
280 { 1, 1, 0},{ -1, 1, 0},{ EOB },{ 2, 1, 0},{ -2, 1, 0},{ 1, 2, 0},
281 { -1, 2, 0},{ 3, 1, 0},{ -3, 1, 0},{ 1, 3, 0},{ -1, 3, 0},{ 2, 2, 0},
282 { -2, 2, 0},{ 4, 1, 1},{ -4, 1, 1},{ 1, 4, 0},{ -1, 4, 0},{ 5, 1, 1},
283 { -5, 1, 1},{ 1, 5, 0},{ -1, 5, 0},{ 3, 2, 0},{ -3, 2, 0},{ 2, 3, 0},
284 { -2, 3, 0},{ 1, 6, 0},{ -1, 6, 0},{ 6, 1, 1},{ -6, 1, 1},{ 2, 4, 0},
285 { -2, 4, 0},{ 1, 7, 0},{ -1, 7, 0},{ 4, 2, 1},{ -4, 2, 1},{ 7, 1, 2},
286 { -7, 1, 2},{ 3, 3, 0},{ -3, 3, 0},{ 1, 8, 0},{ -1, 8, 0},{ 2, 5, 0},
287 { -2, 5, 0},{ 8, 1, 2},{ -8, 1, 2},{ 1, 9, 0},{ -1, 9, 0},{ 3, 4, 0},
288 { -3, 4, 0},{ 2, 6, 0},{ -2, 6, 0},{ 5, 2, 1},{ -5, 2, 1},{ 1,10, 0},
289 { -1,10, 0},{ 9, 1, 2},{ -9, 1, 2},{ 4, 3, 1},{ -4, 3, 1}
290 },
291 //level_add
292 { 0,10, 6, 5, 4, 3, 3, 2, 2, 2, 2,-1,-1,-1,-1,-1,-1,
293 -1,-1,-1,-1,-1,-1,-1,-1,-1,-1},
294 2, //golomb_order
295 3, //inc_limit
296 10 //max_run
297 },{
298 { //level / run
299 { 1, 1, 0},{ -1, 1, 0},{ EOB },{ 2, 1, 0},{ -2, 1, 0},{ 3, 1, 0},
300 { -3, 1, 0},{ 1, 2, 0},{ -1, 2, 0},{ 4, 1, 0},{ -4, 1, 0},{ 5, 1, 0},
301 { -5, 1, 0},{ 2, 2, 0},{ -2, 2, 0},{ 1, 3, 0},{ -1, 3, 0},{ 6, 1, 0},
302 { -6, 1, 0},{ 3, 2, 0},{ -3, 2, 0},{ 7, 1, 1},{ -7, 1, 1},{ 1, 4, 0},
303 { -1, 4, 0},{ 8, 1, 1},{ -8, 1, 1},{ 2, 3, 0},{ -2, 3, 0},{ 4, 2, 0},
304 { -4, 2, 0},{ 1, 5, 0},{ -1, 5, 0},{ 9, 1, 1},{ -9, 1, 1},{ 5, 2, 0},
305 { -5, 2, 0},{ 2, 4, 0},{ -2, 4, 0},{ 1, 6, 0},{ -1, 6, 0},{ 10, 1, 2},
306 {-10, 1, 2},{ 3, 3, 0},{ -3, 3, 0},{ 11, 1, 2},{-11, 1, 2},{ 1, 7, 0},
307 { -1, 7, 0},{ 6, 2, 0},{ -6, 2, 0},{ 3, 4, 0},{ -3, 4, 0},{ 2, 5, 0},
308 { -2, 5, 0},{ 12, 1, 2},{-12, 1, 2},{ 4, 3, 0},{ -4, 3, 0}
309 },
310 //level_add
311 { 0,13, 7, 5, 4, 3, 2, 2,-1,-1,-1,-1,-1,-1,-1,-1,-1,
312 -1,-1,-1,-1,-1,-1,-1,-1,-1,-1},
313 2, //golomb_order
314 6, //inc_limit
315 7 //max_run
316 },{
317 { //level / run
318 { EOB },{ 1, 1, 0},{ -1, 1, 0},{ 2, 1, 0},{ -2, 1, 0},{ 3, 1, 0},
319 { -3, 1, 0},{ 4, 1, 0},{ -4, 1, 0},{ 5, 1, 0},{ -5, 1, 0},{ 1, 2, 0},
320 { -1, 2, 0},{ 6, 1, 0},{ -6, 1, 0},{ 7, 1, 0},{ -7, 1, 0},{ 8, 1, 0},
321 { -8, 1, 0},{ 2, 2, 0},{ -2, 2, 0},{ 9, 1, 0},{ -9, 1, 0},{ 1, 3, 0},
322 { -1, 3, 0},{ 10, 1, 1},{-10, 1, 1},{ 3, 2, 0},{ -3, 2, 0},{ 11, 1, 1},
323 {-11, 1, 1},{ 4, 2, 0},{ -4, 2, 0},{ 12, 1, 1},{-12, 1, 1},{ 1, 4, 0},
324 { -1, 4, 0},{ 2, 3, 0},{ -2, 3, 0},{ 13, 1, 1},{-13, 1, 1},{ 5, 2, 0},
325 { -5, 2, 0},{ 14, 1, 1},{-14, 1, 1},{ 6, 2, 0},{ -6, 2, 0},{ 1, 5, 0},
326 { -1, 5, 0},{ 15, 1, 1},{-15, 1, 1},{ 3, 3, 0},{ -3, 3, 0},{ 16, 1, 1},
327 {-16, 1, 1},{ 2, 4, 0},{ -2, 4, 0},{ 7, 2, 0},{ -7, 2, 0}
328 },
329 //level_add
330 { 0,17, 8, 4, 3, 2,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
331 -1,-1,-1,-1,-1,-1,-1,-1,-1,-1},
332 2, //golomb_order
333 9, //inc_limit
334 5 //max_run
335 },{
336 { //level / run
337 { EOB },{ 1, 1, 0},{ -1, 1, 0},{ 2, 1, 0},{ -2, 1, 0},{ 3, 1, 0},
338 { -3, 1, 0},{ 4, 1, 0},{ -4, 1, 0},{ 5, 1, 0},{ -5, 1, 0},{ 6, 1, 0},
339 { -6, 1, 0},{ 7, 1, 0},{ -7, 1, 0},{ 1, 2, 0},{ -1, 2, 0},{ 8, 1, 0},
340 { -8, 1, 0},{ 9, 1, 0},{ -9, 1, 0},{ 10, 1, 0},{-10, 1, 0},{ 11, 1, 0},
341 {-11, 1, 0},{ 12, 1, 0},{-12, 1, 0},{ 2, 2, 0},{ -2, 2, 0},{ 13, 1, 0},
342 {-13, 1, 0},{ 1, 3, 0},{ -1, 3, 0},{ 14, 1, 0},{-14, 1, 0},{ 15, 1, 0},
343 {-15, 1, 0},{ 3, 2, 0},{ -3, 2, 0},{ 16, 1, 0},{-16, 1, 0},{ 17, 1, 0},
344 {-17, 1, 0},{ 18, 1, 0},{-18, 1, 0},{ 4, 2, 0},{ -4, 2, 0},{ 19, 1, 0},
345 {-19, 1, 0},{ 20, 1, 0},{-20, 1, 0},{ 2, 3, 0},{ -2, 3, 0},{ 1, 4, 0},
346 { -1, 4, 0},{ 5, 2, 0},{ -5, 2, 0},{ 21, 1, 0},{-21, 1, 0}
347 },
348 //level_add
349 { 0,22, 6, 3, 2,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
350 -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,
373 2, 2, 2, 2, 2, 2, 2, 2, 2,-1},
374 2, //golomb_order
375 0, //inc_limit
376 25 //max_run
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,
392 2, 2, 2, 2,-1,-1,-1,-1,-1,-1},
393 0, //golomb_order
394 1, //inc_limit
395 20 //max_run
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,
411 -1,-1,-1,-1,-1,-1,-1,-1,-1,-1},
412 1, //golomb_order
413 2, //inc_limit
414 11 //max_run
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,
430 -1,-1,-1,-1,-1,-1,-1,-1,-1,-1},
431 1, //golomb_order
432 4, //inc_limit
433 8 //max_run
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,
449 -1,-1,-1,-1,-1,-1,-1,-1,-1,-1},
450 0, //golomb_order
451 INT_MAX, //inc_limit
452 5, //max_run
453 }
454 };
455
456 #undef EOB
457
458 /*****************************************************************************
459 *
460 * motion vector prediction
461 *
462 ****************************************************************************/
463
464 static inline void store_mvs(AVSContext *h) {
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 cavs_vector *pmv_bw = pmv_fw + MV_BWD_OFFS;
474 int den = h->direct_den[col_mv->ref];
475 int m = col_mv->x >> 31;
476
477 pmv_fw->dist = h->dist[1];
478 pmv_bw->dist = h->dist[0];
479 pmv_fw->ref = 1;
480 pmv_bw->ref = 0;
481 /* scale the co-located motion vector according to its temporal span */
482 pmv_fw->x = (((den+(den*col_mv->x*pmv_fw->dist^m)-m-1)>>14)^m)-m;
483 pmv_bw->x = m-(((den+(den*col_mv->x*pmv_bw->dist^m)-m-1)>>14)^m);
484 m = col_mv->y >> 31;
485 pmv_fw->y = (((den+(den*col_mv->y*pmv_fw->dist^m)-m-1)>>14)^m)-m;
486 pmv_bw->y = m-(((den+(den*col_mv->y*pmv_bw->dist^m)-m-1)>>14)^m);
487 }
488
489 static inline void mv_pred_sym(AVSContext *h, cavs_vector *src, enum cavs_block size) {
490 cavs_vector *dst = src + MV_BWD_OFFS;
491
492 /* backward mv is the scaled and negated forward mv */
493 dst->x = -((src->x * h->sym_factor + 256) >> 9);
494 dst->y = -((src->y * h->sym_factor + 256) >> 9);
495 dst->ref = 0;
496 dst->dist = h->dist[0];
497 set_mvs(dst, size);
498 }
499
500 /*****************************************************************************
501 *
502 * residual data decoding
503 *
504 ****************************************************************************/
505
506 /** kth-order exponential golomb code */
507 static inline int get_ue_code(GetBitContext *gb, int order) {
508 if(order) {
509 int ret = get_ue_golomb(gb) << order;
510 return ret + get_bits(gb,order);
511 }
512 return get_ue_golomb(gb);
513 }
514
515 static inline int dequant(AVSContext *h, DCTELEM *level_buf, uint8_t *run_buf,
516 DCTELEM *dst, int mul, int shift, int coeff_num) {
517 int round = 1 << (shift - 1);
518 int pos = -1;
519 const uint8_t *scantab = h->scantable.permutated;
520
521 /* inverse scan and dequantization */
522 while(--coeff_num >= 0){
523 pos += run_buf[coeff_num];
524 if(pos > 63) {
525 av_log(h->s.avctx, AV_LOG_ERROR,
526 "position out of block bounds at pic %d MB(%d,%d)\n",
527 h->picture.poc, h->mbx, h->mby);
528 return -1;
529 }
530 dst[scantab[pos]] = (level_buf[coeff_num]*mul + round) >> shift;
531 }
532 return 0;
533 }
534
535 /**
536 * decode coefficients from one 8x8 block, dequantize, inverse transform
537 * and add them to sample block
538 * @param r pointer to 2D VLC table
539 * @param esc_golomb_order escape codes are k-golomb with this order k
540 * @param qp quantizer
541 * @param dst location of sample block
542 * @param stride line stride in frame buffer
543 */
544 static int decode_residual_block(AVSContext *h, GetBitContext *gb,
545 const struct dec_2dvlc *r, int esc_golomb_order,
546 int qp, uint8_t *dst, int stride) {
547 int i, level_code, esc_code, level, run, mask;
548 DCTELEM level_buf[65];
549 uint8_t run_buf[65];
550 DCTELEM *block = h->block;
551
552 for(i=0;i<65;i++) {
553 level_code = get_ue_code(gb,r->golomb_order);
554 if(level_code >= ESCAPE_CODE) {
555 run = ((level_code - ESCAPE_CODE) >> 1) + 1;
556 esc_code = get_ue_code(gb,esc_golomb_order);
557 level = esc_code + (run > r->max_run ? 1 : r->level_add[run]);
558 while(level > r->inc_limit)
559 r++;
560 mask = -(level_code & 1);
561 level = (level^mask) - mask;
562 } else if (level_code >= 0) {
563 level = r->rltab[level_code][0];
564 if(!level) //end of block signal
565 break;
566 run = r->rltab[level_code][1];
567 r += r->rltab[level_code][2];
568 } else {
569 break;
570 }
571 level_buf[i] = level;
572 run_buf[i] = run;
573 }
574 if (dequant(h, level_buf, run_buf, block, dequant_mul[qp],
575 dequant_shift[qp], i))
576 return -1;
577 h->cdsp.cavs_idct8_add(dst,block,stride);
578 h->s.dsp.clear_block(block);
579 return 0;
580 }
581
582
583 static inline void decode_residual_chroma(AVSContext *h) {
584 if(h->cbp & (1<<4))
585 decode_residual_block(h, &h->s.gb, chroma_dec, 0,
586 cavs_chroma_qp[h->qp], h->cu, h->c_stride);
587 if(h->cbp & (1<<5))
588 decode_residual_block(h, &h->s.gb, chroma_dec, 0,
589 cavs_chroma_qp[h->qp], h->cv, h->c_stride);
590 }
591
592 static inline int decode_residual_inter(AVSContext *h) {
593 int block;
594
595 /* get coded block pattern */
596 int cbp= get_ue_golomb(&h->s.gb);
597 if(cbp > 63){
598 av_log(h->s.avctx, AV_LOG_ERROR, "illegal inter cbp\n");
599 return -1;
600 }
601 h->cbp = cbp_tab[cbp][1];
602
603 /* get quantizer */
604 if(h->cbp && !h->qp_fixed)
605 h->qp = (h->qp + get_se_golomb(&h->s.gb)) & 63;
606 for(block=0;block<4;block++)
607 if(h->cbp & (1<<block))
608 decode_residual_block(h, &h->s.gb, inter_dec, 0, h->qp,
609 h->cy + h->luma_scan[block], h->l_stride);
610 decode_residual_chroma(h);
611
612 return 0;
613 }
614
615 /*****************************************************************************
616 *
617 * macroblock level
618 *
619 ****************************************************************************/
620
621 static inline void set_mv_intra(AVSContext *h) {
622 h->mv[MV_FWD_X0] = ff_cavs_intra_mv;
623 set_mvs(&h->mv[MV_FWD_X0], BLK_16X16);
624 h->mv[MV_BWD_X0] = ff_cavs_intra_mv;
625 set_mvs(&h->mv[MV_BWD_X0], BLK_16X16);
626 if(h->pic_type != AV_PICTURE_TYPE_B)
627 h->col_type_base[h->mbidx] = I_8X8;
628 }
629
630 static int decode_mb_i(AVSContext *h, int cbp_code) {
631 GetBitContext *gb = &h->s.gb;
632 unsigned pred_mode_uv;
633 int block;
634 uint8_t top[18];
635 uint8_t *left = NULL;
636 uint8_t *d;
637
638 ff_cavs_init_mb(h);
639
640 /* get intra prediction modes from stream */
641 for(block=0;block<4;block++) {
642 int nA,nB,predpred;
643 int pos = scan3x3[block];
644
645 nA = h->pred_mode_Y[pos-1];
646 nB = h->pred_mode_Y[pos-3];
647 predpred = FFMIN(nA,nB);
648 if(predpred == NOT_AVAIL) // if either is not available
649 predpred = INTRA_L_LP;
650 if(!get_bits1(gb)){
651 int rem_mode= get_bits(gb, 2);
652 predpred = rem_mode + (rem_mode >= predpred);
653 }
654 h->pred_mode_Y[pos] = predpred;
655 }
656 pred_mode_uv = get_ue_golomb(gb);
657 if(pred_mode_uv > 6) {
658 av_log(h->s.avctx, AV_LOG_ERROR, "illegal intra chroma pred mode\n");
659 return -1;
660 }
661 ff_cavs_modify_mb_i(h, &pred_mode_uv);
662
663 /* get coded block pattern */
664 if(h->pic_type == AV_PICTURE_TYPE_I)
665 cbp_code = get_ue_golomb(gb);
666 if(cbp_code > 63){
667 av_log(h->s.avctx, AV_LOG_ERROR, "illegal intra cbp\n");
668 return -1;
669 }
670 h->cbp = cbp_tab[cbp_code][0];
671 if(h->cbp && !h->qp_fixed)
672 h->qp = (h->qp + get_se_golomb(gb)) & 63; //qp_delta
673
674 /* luma intra prediction interleaved with residual decode/transform/add */
675 for(block=0;block<4;block++) {
676 d = h->cy + h->luma_scan[block];
677 ff_cavs_load_intra_pred_luma(h, top, &left, block);
678 h->intra_pred_l[h->pred_mode_Y[scan3x3[block]]]
679 (d, top, left, h->l_stride);
680 if(h->cbp & (1<<block))
681 decode_residual_block(h, gb, intra_dec, 1, h->qp, d, h->l_stride);
682 }
683
684 /* chroma intra prediction */
685 ff_cavs_load_intra_pred_chroma(h);
686 h->intra_pred_c[pred_mode_uv](h->cu, &h->top_border_u[h->mbx*10],
687 h->left_border_u, h->c_stride);
688 h->intra_pred_c[pred_mode_uv](h->cv, &h->top_border_v[h->mbx*10],
689 h->left_border_v, h->c_stride);
690
691 decode_residual_chroma(h);
692 ff_cavs_filter(h,I_8X8);
693 set_mv_intra(h);
694 return 0;
695 }
696
697 static inline void set_intra_mode_default(AVSContext *h) {
698 if(h->stream_revision > 0) {
699 h->pred_mode_Y[3] = h->pred_mode_Y[6] = NOT_AVAIL;
700 h->top_pred_Y[h->mbx*2+0] = h->top_pred_Y[h->mbx*2+1] = NOT_AVAIL;
701 } else {
702 h->pred_mode_Y[3] = h->pred_mode_Y[6] = INTRA_L_LP;
703 h->top_pred_Y[h->mbx*2+0] = h->top_pred_Y[h->mbx*2+1] = INTRA_L_LP;
704 }
705 }
706
707 static void decode_mb_p(AVSContext *h, enum cavs_mb mb_type) {
708 GetBitContext *gb = &h->s.gb;
709 int ref[4];
710
711 ff_cavs_init_mb(h);
712 switch(mb_type) {
713 case P_SKIP:
714 ff_cavs_mv(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_PSKIP, BLK_16X16, 0);
715 break;
716 case P_16X16:
717 ref[0] = h->ref_flag ? 0 : get_bits1(gb);
718 ff_cavs_mv(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_MEDIAN, BLK_16X16,ref[0]);
719 break;
720 case P_16X8:
721 ref[0] = h->ref_flag ? 0 : get_bits1(gb);
722 ref[2] = h->ref_flag ? 0 : get_bits1(gb);
723 ff_cavs_mv(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_TOP, BLK_16X8, ref[0]);
724 ff_cavs_mv(h, MV_FWD_X2, MV_FWD_A1, MV_PRED_LEFT, BLK_16X8, ref[2]);
725 break;
726 case P_8X16:
727 ref[0] = h->ref_flag ? 0 : get_bits1(gb);
728 ref[1] = h->ref_flag ? 0 : get_bits1(gb);
729 ff_cavs_mv(h, MV_FWD_X0, MV_FWD_B3, MV_PRED_LEFT, BLK_8X16, ref[0]);
730 ff_cavs_mv(h, MV_FWD_X1, MV_FWD_C2, MV_PRED_TOPRIGHT,BLK_8X16, ref[1]);
731 break;
732 case P_8X8:
733 ref[0] = h->ref_flag ? 0 : get_bits1(gb);
734 ref[1] = h->ref_flag ? 0 : get_bits1(gb);
735 ref[2] = h->ref_flag ? 0 : get_bits1(gb);
736 ref[3] = h->ref_flag ? 0 : get_bits1(gb);
737 ff_cavs_mv(h, MV_FWD_X0, MV_FWD_B3, MV_PRED_MEDIAN, BLK_8X8, ref[0]);
738 ff_cavs_mv(h, MV_FWD_X1, MV_FWD_C2, MV_PRED_MEDIAN, BLK_8X8, ref[1]);
739 ff_cavs_mv(h, MV_FWD_X2, MV_FWD_X1, MV_PRED_MEDIAN, BLK_8X8, ref[2]);
740 ff_cavs_mv(h, MV_FWD_X3, MV_FWD_X0, MV_PRED_MEDIAN, BLK_8X8, ref[3]);
741 }
742 ff_cavs_inter(h, mb_type);
743 set_intra_mode_default(h);
744 store_mvs(h);
745 if(mb_type != P_SKIP)
746 decode_residual_inter(h);
747 ff_cavs_filter(h,mb_type);
748 h->col_type_base[h->mbidx] = mb_type;
749 }
750
751 static void decode_mb_b(AVSContext *h, enum cavs_mb mb_type) {
752 int block;
753 enum cavs_sub_mb sub_type[4];
754 int flags;
755
756 ff_cavs_init_mb(h);
757
758 /* reset all MVs */
759 h->mv[MV_FWD_X0] = ff_cavs_dir_mv;
760 set_mvs(&h->mv[MV_FWD_X0], BLK_16X16);
761 h->mv[MV_BWD_X0] = ff_cavs_dir_mv;
762 set_mvs(&h->mv[MV_BWD_X0], BLK_16X16);
763 switch(mb_type) {
764 case B_SKIP:
765 case B_DIRECT:
766 if(!h->col_type_base[h->mbidx]) {
767 /* intra MB at co-location, do in-plane prediction */
768 ff_cavs_mv(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_BSKIP, BLK_16X16, 1);
769 ff_cavs_mv(h, MV_BWD_X0, MV_BWD_C2, MV_PRED_BSKIP, BLK_16X16, 0);
770 } else
771 /* direct prediction from co-located P MB, block-wise */
772 for(block=0;block<4;block++)
773 mv_pred_direct(h,&h->mv[mv_scan[block]],
774 &h->col_mv[h->mbidx*4 + block]);
775 break;
776 case B_FWD_16X16:
777 ff_cavs_mv(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_MEDIAN, BLK_16X16, 1);
778 break;
779 case B_SYM_16X16:
780 ff_cavs_mv(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_MEDIAN, BLK_16X16, 1);
781 mv_pred_sym(h, &h->mv[MV_FWD_X0], BLK_16X16);
782 break;
783 case B_BWD_16X16:
784 ff_cavs_mv(h, MV_BWD_X0, MV_BWD_C2, MV_PRED_MEDIAN, BLK_16X16, 0);
785 break;
786 case B_8X8:
787 for(block=0;block<4;block++)
788 sub_type[block] = get_bits(&h->s.gb,2);
789 for(block=0;block<4;block++) {
790 switch(sub_type[block]) {
791 case B_SUB_DIRECT:
792 if(!h->col_type_base[h->mbidx]) {
793 /* intra MB at co-location, do in-plane prediction */
794 ff_cavs_mv(h, mv_scan[block], mv_scan[block]-3,
795 MV_PRED_BSKIP, BLK_8X8, 1);
796 ff_cavs_mv(h, mv_scan[block]+MV_BWD_OFFS,
797 mv_scan[block]-3+MV_BWD_OFFS,
798 MV_PRED_BSKIP, BLK_8X8, 0);
799 } else
800 mv_pred_direct(h,&h->mv[mv_scan[block]],
801 &h->col_mv[h->mbidx*4 + block]);
802 break;
803 case B_SUB_FWD:
804 ff_cavs_mv(h, mv_scan[block], mv_scan[block]-3,
805 MV_PRED_MEDIAN, BLK_8X8, 1);
806 break;
807 case B_SUB_SYM:
808 ff_cavs_mv(h, mv_scan[block], mv_scan[block]-3,
809 MV_PRED_MEDIAN, BLK_8X8, 1);
810 mv_pred_sym(h, &h->mv[mv_scan[block]], BLK_8X8);
811 break;
812 }
813 }
814 for(block=0;block<4;block++) {
815 if(sub_type[block] == B_SUB_BWD)
816 ff_cavs_mv(h, mv_scan[block]+MV_BWD_OFFS,
817 mv_scan[block]+MV_BWD_OFFS-3,
818 MV_PRED_MEDIAN, BLK_8X8, 0);
819 }
820 break;
821 default:
822 assert((mb_type > B_SYM_16X16) && (mb_type < B_8X8));
823 flags = ff_cavs_partition_flags[mb_type];
824 if(mb_type & 1) { /* 16x8 macroblock types */
825 if(flags & FWD0)
826 ff_cavs_mv(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_TOP, BLK_16X8, 1);
827 if(flags & SYM0)
828 mv_pred_sym(h, &h->mv[MV_FWD_X0], BLK_16X8);
829 if(flags & FWD1)
830 ff_cavs_mv(h, MV_FWD_X2, MV_FWD_A1, MV_PRED_LEFT, BLK_16X8, 1);
831 if(flags & SYM1)
832 mv_pred_sym(h, &h->mv[MV_FWD_X2], BLK_16X8);
833 if(flags & BWD0)
834 ff_cavs_mv(h, MV_BWD_X0, MV_BWD_C2, MV_PRED_TOP, BLK_16X8, 0);
835 if(flags & BWD1)
836 ff_cavs_mv(h, MV_BWD_X2, MV_BWD_A1, MV_PRED_LEFT, BLK_16X8, 0);
837 } else { /* 8x16 macroblock types */
838 if(flags & FWD0)
839 ff_cavs_mv(h, MV_FWD_X0, MV_FWD_B3, MV_PRED_LEFT, BLK_8X16, 1);
840 if(flags & SYM0)
841 mv_pred_sym(h, &h->mv[MV_FWD_X0], BLK_8X16);
842 if(flags & FWD1)
843 ff_cavs_mv(h,MV_FWD_X1,MV_FWD_C2,MV_PRED_TOPRIGHT,BLK_8X16,1);
844 if(flags & SYM1)
845 mv_pred_sym(h, &h->mv[MV_FWD_X1], BLK_8X16);
846 if(flags & BWD0)
847 ff_cavs_mv(h, MV_BWD_X0, MV_BWD_B3, MV_PRED_LEFT, BLK_8X16, 0);
848 if(flags & BWD1)
849 ff_cavs_mv(h,MV_BWD_X1,MV_BWD_C2,MV_PRED_TOPRIGHT,BLK_8X16,0);
850 }
851 }
852 ff_cavs_inter(h, mb_type);
853 set_intra_mode_default(h);
854 if(mb_type != B_SKIP)
855 decode_residual_inter(h);
856 ff_cavs_filter(h,mb_type);
857 }
858
859 /*****************************************************************************
860 *
861 * slice level
862 *
863 ****************************************************************************/
864
865 static inline int decode_slice_header(AVSContext *h, GetBitContext *gb) {
866 if(h->stc > 0xAF)
867 av_log(h->s.avctx, AV_LOG_ERROR, "unexpected start code 0x%02x\n", h->stc);
868 h->mby = h->stc;
869 h->mbidx = h->mby*h->mb_width;
870
871 /* mark top macroblocks as unavailable */
872 h->flags &= ~(B_AVAIL|C_AVAIL);
873 if((h->mby == 0) && (!h->qp_fixed)){
874 h->qp_fixed = get_bits1(gb);
875 h->qp = get_bits(gb,6);
876 }
877 /* inter frame or second slice can have weighting params */
878 if((h->pic_type != AV_PICTURE_TYPE_I) || (!h->pic_structure && h->mby >= h->mb_width/2))
879 if(get_bits1(gb)) { //slice_weighting_flag
880 av_log(h->s.avctx, AV_LOG_ERROR,
881 "weighted prediction not yet supported\n");
882 }
883 return 0;
884 }
885
886 static inline int check_for_slice(AVSContext *h) {
887 GetBitContext *gb = &h->s.gb;
888 int align;
889
890 if(h->mbx)
891 return 0;
892 align = (-get_bits_count(gb)) & 7;
893 /* check for stuffing byte */
894 if(!align && (show_bits(gb,8) == 0x80))
895 align = 8;
896 if((show_bits_long(gb,24+align) & 0xFFFFFF) == 0x000001) {
897 skip_bits_long(gb,24+align);
898 h->stc = get_bits(gb,8);
899 if (h->stc >= h->mb_height)
900 return 0;
901 decode_slice_header(h,gb);
902 return 1;
903 }
904 return 0;
905 }
906
907 /*****************************************************************************
908 *
909 * frame level
910 *
911 ****************************************************************************/
912
913 static int decode_pic(AVSContext *h) {
914 MpegEncContext *s = &h->s;
915 int skip_count = -1;
916 enum cavs_mb mb_type;
917
918 if (!s->context_initialized) {
919 if (ff_MPV_common_init(s) < 0)
920 return -1;
921 ff_init_scantable_permutation(s->dsp.idct_permutation,
922 h->cdsp.idct_perm);
923 ff_init_scantable(s->dsp.idct_permutation,&h->scantable,ff_zigzag_direct);
924 }
925 skip_bits(&s->gb,16);//bbv_dwlay
926 if(h->stc == PIC_PB_START_CODE) {
927 h->pic_type = get_bits(&s->gb,2) + AV_PICTURE_TYPE_I;
928 if(h->pic_type > AV_PICTURE_TYPE_B) {
929 av_log(s->avctx, AV_LOG_ERROR, "illegal picture type\n");
930 return -1;
931 }
932 /* make sure we have the reference frames we need */
933 if(!h->DPB[0].f.data[0] ||
934 (!h->DPB[1].f.data[0] && h->pic_type == AV_PICTURE_TYPE_B))
935 return -1;
936 } else {
937 h->pic_type = AV_PICTURE_TYPE_I;
938 if(get_bits1(&s->gb))
939 skip_bits(&s->gb,24);//time_code
940 /* old sample clips were all progressive and no low_delay,
941 bump stream revision if detected otherwise */
942 if (s->low_delay || !(show_bits(&s->gb,9) & 1))
943 h->stream_revision = 1;
944 /* similarly test top_field_first and repeat_first_field */
945 else if(show_bits(&s->gb,11) & 3)
946 h->stream_revision = 1;
947 if(h->stream_revision > 0)
948 skip_bits(&s->gb,1); //marker_bit
949 }
950 /* release last B frame */
951 if(h->picture.f.data[0])
952 s->avctx->release_buffer(s->avctx, &h->picture.f);
953
954 ff_get_buffer(s->avctx, &h->picture.f);
955 ff_cavs_init_pic(h);
956 h->picture.poc = get_bits(&s->gb,8)*2;
957
958 /* get temporal distances and MV scaling factors */
959 if(h->pic_type != AV_PICTURE_TYPE_B) {
960 h->dist[0] = (h->picture.poc - h->DPB[0].poc + 512) % 512;
961 } else {
962 h->dist[0] = (h->DPB[0].poc - h->picture.poc + 512) % 512;
963 }
964 h->dist[1] = (h->picture.poc - h->DPB[1].poc + 512) % 512;
965 h->scale_den[0] = h->dist[0] ? 512/h->dist[0] : 0;
966 h->scale_den[1] = h->dist[1] ? 512/h->dist[1] : 0;
967 if(h->pic_type == AV_PICTURE_TYPE_B) {
968 h->sym_factor = h->dist[0]*h->scale_den[1];
969 } else {
970 h->direct_den[0] = h->dist[0] ? 16384/h->dist[0] : 0;
971 h->direct_den[1] = h->dist[1] ? 16384/h->dist[1] : 0;
972 }
973
974 if(s->low_delay)
975 get_ue_golomb(&s->gb); //bbv_check_times
976 h->progressive = get_bits1(&s->gb);
977 h->pic_structure = 1;
978 if(!h->progressive)
979 h->pic_structure = get_bits1(&s->gb);
980 if(!h->pic_structure && h->stc == PIC_PB_START_CODE)
981 skip_bits1(&s->gb); //advanced_pred_mode_disable
982 skip_bits1(&s->gb); //top_field_first
983 skip_bits1(&s->gb); //repeat_first_field
984 h->qp_fixed = get_bits1(&s->gb);
985 h->qp = get_bits(&s->gb,6);
986 if(h->pic_type == AV_PICTURE_TYPE_I) {
987 if(!h->progressive && !h->pic_structure)
988 skip_bits1(&s->gb);//what is this?
989 skip_bits(&s->gb,4); //reserved bits
990 } else {
991 if(!(h->pic_type == AV_PICTURE_TYPE_B && h->pic_structure == 1))
992 h->ref_flag = get_bits1(&s->gb);
993 skip_bits(&s->gb,4); //reserved bits
994 h->skip_mode_flag = get_bits1(&s->gb);
995 }
996 h->loop_filter_disable = get_bits1(&s->gb);
997 if(!h->loop_filter_disable && get_bits1(&s->gb)) {
998 h->alpha_offset = get_se_golomb(&s->gb);
999 h->beta_offset = get_se_golomb(&s->gb);
1000 } else {
1001 h->alpha_offset = h->beta_offset = 0;
1002 }
1003 if(h->pic_type == AV_PICTURE_TYPE_I) {
1004 do {
1005 check_for_slice(h);
1006 decode_mb_i(h, 0);
1007 } while(ff_cavs_next_mb(h));
1008 } else if(h->pic_type == AV_PICTURE_TYPE_P) {
1009 do {
1010 if(check_for_slice(h))
1011 skip_count = -1;
1012 if(h->skip_mode_flag && (skip_count < 0))
1013 skip_count = get_ue_golomb(&s->gb);
1014 if(h->skip_mode_flag && skip_count--) {
1015 decode_mb_p(h,P_SKIP);
1016 } else {
1017 mb_type = get_ue_golomb(&s->gb) + P_SKIP + h->skip_mode_flag;
1018 if(mb_type > P_8X8)
1019 decode_mb_i(h, mb_type - P_8X8 - 1);
1020 else
1021 decode_mb_p(h,mb_type);
1022 }
1023 } while(ff_cavs_next_mb(h));
1024 } else { /* AV_PICTURE_TYPE_B */
1025 do {
1026 if(check_for_slice(h))
1027 skip_count = -1;
1028 if(h->skip_mode_flag && (skip_count < 0))
1029 skip_count = get_ue_golomb(&s->gb);
1030 if(h->skip_mode_flag && skip_count--) {
1031 decode_mb_b(h,B_SKIP);
1032 } else {
1033 mb_type = get_ue_golomb(&s->gb) + B_SKIP + h->skip_mode_flag;
1034 if(mb_type > B_8X8)
1035 decode_mb_i(h, mb_type - B_8X8 - 1);
1036 else
1037 decode_mb_b(h,mb_type);
1038 }
1039 } while(ff_cavs_next_mb(h));
1040 }
1041 if(h->pic_type != AV_PICTURE_TYPE_B) {
1042 if(h->DPB[1].f.data[0])
1043 s->avctx->release_buffer(s->avctx, &h->DPB[1].f);
1044 h->DPB[1] = h->DPB[0];
1045 h->DPB[0] = h->picture;
1046 memset(&h->picture,0,sizeof(Picture));
1047 }
1048 return 0;
1049 }
1050
1051 /*****************************************************************************
1052 *
1053 * headers and interface
1054 *
1055 ****************************************************************************/
1056
1057 static int decode_seq_header(AVSContext *h) {
1058 MpegEncContext *s = &h->s;
1059 int frame_rate_code;
1060 int width, height;
1061
1062 h->profile = get_bits(&s->gb,8);
1063 h->level = get_bits(&s->gb,8);
1064 skip_bits1(&s->gb); //progressive sequence
1065
1066 width = get_bits(&s->gb, 14);
1067 height = get_bits(&s->gb, 14);
1068 if ((s->width || s->height) && (s->width != width || s->height != height)) {
1069 av_log_missing_feature(s, "Width/height changing in CAVS", 0);
1070 return AVERROR_PATCHWELCOME;
1071 }
1072 s->width = width;
1073 s->height = height;
1074
1075 skip_bits(&s->gb,2); //chroma format
1076 skip_bits(&s->gb,3); //sample_precision
1077 h->aspect_ratio = get_bits(&s->gb,4);
1078 frame_rate_code = get_bits(&s->gb,4);
1079 skip_bits(&s->gb,18);//bit_rate_lower
1080 skip_bits1(&s->gb); //marker_bit
1081 skip_bits(&s->gb,12);//bit_rate_upper
1082 s->low_delay = get_bits1(&s->gb);
1083 h->mb_width = (s->width + 15) >> 4;
1084 h->mb_height = (s->height + 15) >> 4;
1085 h->s.avctx->time_base.den = ff_mpeg12_frame_rate_tab[frame_rate_code].num;
1086 h->s.avctx->time_base.num = ff_mpeg12_frame_rate_tab[frame_rate_code].den;
1087 h->s.avctx->width = s->width;
1088 h->s.avctx->height = s->height;
1089 if(!h->top_qp)
1090 ff_cavs_init_top_lines(h);
1091 return 0;
1092 }
1093
1094 static void cavs_flush(AVCodecContext * avctx) {
1095 AVSContext *h = avctx->priv_data;
1096 h->got_keyframe = 0;
1097 }
1098
1099 static int cavs_decode_frame(AVCodecContext * avctx,void *data, int *data_size,
1100 AVPacket *avpkt) {
1101 const uint8_t *buf = avpkt->data;
1102 int buf_size = avpkt->size;
1103 AVSContext *h = avctx->priv_data;
1104 MpegEncContext *s = &h->s;
1105 int input_size;
1106 const uint8_t *buf_end;
1107 const uint8_t *buf_ptr;
1108 AVFrame *picture = data;
1109 uint32_t stc = -1;
1110
1111 s->avctx = avctx;
1112
1113 if (buf_size == 0) {
1114 if (!s->low_delay && h->DPB[0].f.data[0]) {
1115 *data_size = sizeof(AVPicture);
1116 *picture = h->DPB[0].f;
1117 memset(&h->DPB[0], 0, sizeof(h->DPB[0]));
1118 }
1119 return 0;
1120 }
1121
1122 buf_ptr = buf;
1123 buf_end = buf + buf_size;
1124 for(;;) {
1125 buf_ptr = avpriv_mpv_find_start_code(buf_ptr,buf_end, &stc);
1126 if((stc & 0xFFFFFE00) || buf_ptr == buf_end)
1127 return FFMAX(0, buf_ptr - buf - s->parse_context.last_index);
1128 input_size = (buf_end - buf_ptr)*8;
1129 switch(stc) {
1130 case CAVS_START_CODE:
1131 init_get_bits(&s->gb, buf_ptr, input_size);
1132 decode_seq_header(h);
1133 break;
1134 case PIC_I_START_CODE:
1135 if(!h->got_keyframe) {
1136 if(h->DPB[0].f.data[0])
1137 avctx->release_buffer(avctx, &h->DPB[0].f);
1138 if(h->DPB[1].f.data[0])
1139 avctx->release_buffer(avctx, &h->DPB[1].f);
1140 h->got_keyframe = 1;
1141 }
1142 case PIC_PB_START_CODE:
1143 *data_size = 0;
1144 if(!h->got_keyframe)
1145 break;
1146 init_get_bits(&s->gb, buf_ptr, input_size);
1147 h->stc = stc;
1148 if(decode_pic(h))
1149 break;
1150 *data_size = sizeof(AVPicture);
1151 if(h->pic_type != AV_PICTURE_TYPE_B) {
1152 if(h->DPB[1].f.data[0]) {
1153 *picture = h->DPB[1].f;
1154 } else {
1155 *data_size = 0;
1156 }
1157 } else
1158 *picture = h->picture.f;
1159 break;
1160 case EXT_START_CODE:
1161 //mpeg_decode_extension(avctx,buf_ptr, input_size);
1162 break;
1163 case USER_START_CODE:
1164 //mpeg_decode_user_data(avctx,buf_ptr, input_size);
1165 break;
1166 default:
1167 if (stc <= SLICE_MAX_START_CODE) {
1168 init_get_bits(&s->gb, buf_ptr, input_size);
1169 decode_slice_header(h, &s->gb);
1170 }
1171 break;
1172 }
1173 }
1174 }
1175
1176 AVCodec ff_cavs_decoder = {
1177 .name = "cavs",
1178 .type = AVMEDIA_TYPE_VIDEO,
1179 .id = AV_CODEC_ID_CAVS,
1180 .priv_data_size = sizeof(AVSContext),
1181 .init = ff_cavs_init,
1182 .close = ff_cavs_end,
1183 .decode = cavs_decode_frame,
1184 .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DELAY,
1185 .flush = cavs_flush,
1186 .long_name = NULL_IF_CONFIG_SMALL("Chinese AVS (Audio Video Standard) (AVS1-P2, JiZhun profile)"),
1187 };
Libav master