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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/attributes.h" | ||
29 | #include "libavutil/avassert.h" | ||
30 | #include "libavutil/emms.h" | ||
31 | #include "libavutil/mem.h" | ||
32 | #include "avcodec.h" | ||
33 | #include "get_bits.h" | ||
34 | #include "golomb.h" | ||
35 | #include "cavs.h" | ||
36 | #include "codec_internal.h" | ||
37 | #include "decode.h" | ||
38 | #include "mathops.h" | ||
39 | #include "mpeg12data.h" | ||
40 | #include "startcode.h" | ||
41 | |||
42 | static const uint8_t mv_scan[4] = { | ||
43 | MV_FWD_X0, MV_FWD_X1, | ||
44 | MV_FWD_X2, MV_FWD_X3 | ||
45 | }; | ||
46 | |||
47 | static const uint8_t cbp_tab[64][2] = { | ||
48 | { 63, 0 }, { 15, 15 }, { 31, 63 }, { 47, 31 }, { 0, 16 }, { 14, 32 }, { 13, 47 }, { 11, 13 }, | ||
49 | { 7, 14 }, { 5, 11 }, { 10, 12 }, { 8, 5 }, { 12, 10 }, { 61, 7 }, { 4, 48 }, { 55, 3 }, | ||
50 | { 1, 2 }, { 2, 8 }, { 59, 4 }, { 3, 1 }, { 62, 61 }, { 9, 55 }, { 6, 59 }, { 29, 62 }, | ||
51 | { 45, 29 }, { 51, 27 }, { 23, 23 }, { 39, 19 }, { 27, 30 }, { 46, 28 }, { 53, 9 }, { 30, 6 }, | ||
52 | { 43, 60 }, { 37, 21 }, { 60, 44 }, { 16, 26 }, { 21, 51 }, { 28, 35 }, { 19, 18 }, { 35, 20 }, | ||
53 | { 42, 24 }, { 26, 53 }, { 44, 17 }, { 32, 37 }, { 58, 39 }, { 24, 45 }, { 20, 58 }, { 17, 43 }, | ||
54 | { 18, 42 }, { 48, 46 }, { 22, 36 }, { 33, 33 }, { 25, 34 }, { 49, 40 }, { 40, 52 }, { 36, 49 }, | ||
55 | { 34, 50 }, { 50, 56 }, { 52, 25 }, { 54, 22 }, { 41, 54 }, { 56, 57 }, { 38, 41 }, { 57, 38 } | ||
56 | }; | ||
57 | |||
58 | static const uint8_t scan3x3[4] = { 4, 5, 7, 8 }; | ||
59 | |||
60 | static const uint8_t dequant_shift[64] = { | ||
61 | 14, 14, 14, 14, 14, 14, 14, 14, | ||
62 | 13, 13, 13, 13, 13, 13, 13, 13, | ||
63 | 13, 12, 12, 12, 12, 12, 12, 12, | ||
64 | 11, 11, 11, 11, 11, 11, 11, 11, | ||
65 | 11, 10, 10, 10, 10, 10, 10, 10, | ||
66 | 10, 9, 9, 9, 9, 9, 9, 9, | ||
67 | 9, 8, 8, 8, 8, 8, 8, 8, | ||
68 | 7, 7, 7, 7, 7, 7, 7, 7 | ||
69 | }; | ||
70 | |||
71 | static const uint16_t dequant_mul[64] = { | ||
72 | 32768, 36061, 38968, 42495, 46341, 50535, 55437, 60424, | ||
73 | 32932, 35734, 38968, 42495, 46177, 50535, 55109, 59933, | ||
74 | 65535, 35734, 38968, 42577, 46341, 50617, 55027, 60097, | ||
75 | 32809, 35734, 38968, 42454, 46382, 50576, 55109, 60056, | ||
76 | 65535, 35734, 38968, 42495, 46320, 50515, 55109, 60076, | ||
77 | 65535, 35744, 38968, 42495, 46341, 50535, 55099, 60087, | ||
78 | 65535, 35734, 38973, 42500, 46341, 50535, 55109, 60097, | ||
79 | 32771, 35734, 38965, 42497, 46341, 50535, 55109, 60099 | ||
80 | }; | ||
81 | |||
82 | #define EOB 0, 0, 0 | ||
83 | |||
84 | static const struct dec_2dvlc intra_dec[7] = { | ||
85 | { | ||
86 | { //level / run / table_inc | ||
87 | { 1, 1, 1 }, { -1, 1, 1 }, { 1, 2, 1 }, { -1, 2, 1 }, { 1, 3, 1 }, { -1, 3, 1 }, | ||
88 | { 1, 4, 1 }, { -1, 4, 1 }, { 1, 5, 1 }, { -1, 5, 1 }, { 1, 6, 1 }, { -1, 6, 1 }, | ||
89 | { 1, 7, 1 }, { -1, 7, 1 }, { 1, 8, 1 }, { -1, 8, 1 }, { 1, 9, 1 }, { -1, 9, 1 }, | ||
90 | { 1, 10, 1 }, { -1, 10, 1 }, { 1, 11, 1 }, { -1, 11, 1 }, { 2, 1, 2 }, { -2, 1, 2 }, | ||
91 | { 1, 12, 1 }, { -1, 12, 1 }, { 1, 13, 1 }, { -1, 13, 1 }, { 1, 14, 1 }, { -1, 14, 1 }, | ||
92 | { 1, 15, 1 }, { -1, 15, 1 }, { 2, 2, 2 }, { -2, 2, 2 }, { 1, 16, 1 }, { -1, 16, 1 }, | ||
93 | { 1, 17, 1 }, { -1, 17, 1 }, { 3, 1, 3 }, { -3, 1, 3 }, { 1, 18, 1 }, { -1, 18, 1 }, | ||
94 | { 1, 19, 1 }, { -1, 19, 1 }, { 2, 3, 2 }, { -2, 3, 2 }, { 1, 20, 1 }, { -1, 20, 1 }, | ||
95 | { 1, 21, 1 }, { -1, 21, 1 }, { 2, 4, 2 }, { -2, 4, 2 }, { 1, 22, 1 }, { -1, 22, 1 }, | ||
96 | { 2, 5, 2 }, { -2, 5, 2 }, { 1, 23, 1 }, { -1, 23, 1 }, { EOB } | ||
97 | }, | ||
98 | //level_add | ||
99 | { 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 }, | ||
100 | 2, //golomb_order | ||
101 | 0, //inc_limit | ||
102 | 23, //max_run | ||
103 | }, | ||
104 | { | ||
105 | { //level / run | ||
106 | { 1, 1, 0 }, { -1, 1, 0 }, { 1, 2, 0 }, { -1, 2, 0 }, { 2, 1, 1 }, { -2, 1, 1 }, | ||
107 | { 1, 3, 0 }, { -1, 3, 0 }, { EOB }, { 1, 4, 0 }, { -1, 4, 0 }, { 1, 5, 0 }, | ||
108 | { -1, 5, 0 }, { 1, 6, 0 }, { -1, 6, 0 }, { 3, 1, 2 }, { -3, 1, 2 }, { 2, 2, 1 }, | ||
109 | { -2, 2, 1 }, { 1, 7, 0 }, { -1, 7, 0 }, { 1, 8, 0 }, { -1, 8, 0 }, { 1, 9, 0 }, | ||
110 | { -1, 9, 0 }, { 2, 3, 1 }, { -2, 3, 1 }, { 4, 1, 2 }, { -4, 1, 2 }, { 1, 10, 0 }, | ||
111 | { -1, 10, 0 }, { 1, 11, 0 }, { -1, 11, 0 }, { 2, 4, 1 }, { -2, 4, 1 }, { 3, 2, 2 }, | ||
112 | { -3, 2, 2 }, { 1, 12, 0 }, { -1, 12, 0 }, { 2, 5, 1 }, { -2, 5, 1 }, { 5, 1, 3 }, | ||
113 | { -5, 1, 3 }, { 1, 13, 0 }, { -1, 13, 0 }, { 2, 6, 1 }, { -2, 6, 1 }, { 1, 14, 0 }, | ||
114 | { -1, 14, 0 }, { 2, 7, 1 }, { -2, 7, 1 }, { 2, 8, 1 }, { -2, 8, 1 }, { 3, 3, 2 }, | ||
115 | { -3, 3, 2 }, { 6, 1, 3 }, { -6, 1, 3 }, { 1, 15, 0 }, { -1, 15, 0 } | ||
116 | }, | ||
117 | //level_add | ||
118 | { 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 }, | ||
119 | 2, //golomb_order | ||
120 | 1, //inc_limit | ||
121 | 15, //max_run | ||
122 | }, | ||
123 | { | ||
124 | { //level / run | ||
125 | { 1, 1, 0 }, { -1, 1, 0 }, { 2, 1, 0 }, { -2, 1, 0 }, { 1, 2, 0 }, { -1, 2, 0 }, | ||
126 | { 3, 1, 1 }, { -3, 1, 1 }, { EOB }, { 1, 3, 0 }, { -1, 3, 0 }, { 2, 2, 0 }, | ||
127 | { -2, 2, 0 }, { 4, 1, 1 }, { -4, 1, 1 }, { 1, 4, 0 }, { -1, 4, 0 }, { 5, 1, 2 }, | ||
128 | { -5, 1, 2 }, { 1, 5, 0 }, { -1, 5, 0 }, { 3, 2, 1 }, { -3, 2, 1 }, { 2, 3, 0 }, | ||
129 | { -2, 3, 0 }, { 1, 6, 0 }, { -1, 6, 0 }, { 6, 1, 2 }, { -6, 1, 2 }, { 2, 4, 0 }, | ||
130 | { -2, 4, 0 }, { 1, 7, 0 }, { -1, 7, 0 }, { 4, 2, 1 }, { -4, 2, 1 }, { 7, 1, 2 }, | ||
131 | { -7, 1, 2 }, { 3, 3, 1 }, { -3, 3, 1 }, { 2, 5, 0 }, { -2, 5, 0 }, { 1, 8, 0 }, | ||
132 | { -1, 8, 0 }, { 2, 6, 0 }, { -2, 6, 0 }, { 8, 1, 3 }, { -8, 1, 3 }, { 1, 9, 0 }, | ||
133 | { -1, 9, 0 }, { 5, 2, 2 }, { -5, 2, 2 }, { 3, 4, 1 }, { -3, 4, 1 }, { 2, 7, 0 }, | ||
134 | { -2, 7, 0 }, { 9, 1, 3 }, { -9, 1, 3 }, { 1, 10, 0 }, { -1, 10, 0 } | ||
135 | }, | ||
136 | //level_add | ||
137 | { 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 }, | ||
138 | 2, //golomb_order | ||
139 | 2, //inc_limit | ||
140 | 10, //max_run | ||
141 | }, | ||
142 | { | ||
143 | { //level / run | ||
144 | { 1, 1, 0 }, { -1, 1, 0 }, { 2, 1, 0 }, { -2, 1, 0 }, { 3, 1, 0 }, { -3, 1, 0 }, | ||
145 | { 1, 2, 0 }, { -1, 2, 0 }, { EOB }, { 4, 1, 0 }, { -4, 1, 0 }, { 5, 1, 1 }, | ||
146 | { -5, 1, 1 }, { 2, 2, 0 }, { -2, 2, 0 }, { 1, 3, 0 }, { -1, 3, 0 }, { 6, 1, 1 }, | ||
147 | { -6, 1, 1 }, { 3, 2, 0 }, { -3, 2, 0 }, { 7, 1, 1 }, { -7, 1, 1 }, { 1, 4, 0 }, | ||
148 | { -1, 4, 0 }, { 8, 1, 2 }, { -8, 1, 2 }, { 2, 3, 0 }, { -2, 3, 0 }, { 4, 2, 0 }, | ||
149 | { -4, 2, 0 }, { 1, 5, 0 }, { -1, 5, 0 }, { 9, 1, 2 }, { -9, 1, 2 }, { 5, 2, 1 }, | ||
150 | { -5, 2, 1 }, { 2, 4, 0 }, { -2, 4, 0 }, { 10, 1, 2 }, {-10, 1, 2 }, { 3, 3, 0 }, | ||
151 | { -3, 3, 0 }, { 1, 6, 0 }, { -1, 6, 0 }, { 11, 1, 3 }, {-11, 1, 3 }, { 6, 2, 1 }, | ||
152 | { -6, 2, 1 }, { 1, 7, 0 }, { -1, 7, 0 }, { 2, 5, 0 }, { -2, 5, 0 }, { 3, 4, 0 }, | ||
153 | { -3, 4, 0 }, { 12, 1, 3 }, {-12, 1, 3 }, { 4, 3, 0 }, { -4, 3, 0 } | ||
154 | }, | ||
155 | //level_add | ||
156 | { 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 }, | ||
157 | 2, //golomb_order | ||
158 | 4, //inc_limit | ||
159 | 7, //max_run | ||
160 | }, | ||
161 | { | ||
162 | { //level / run | ||
163 | { 1, 1, 0 }, { -1, 1, 0 }, { 2, 1, 0 }, { -2, 1, 0 }, { 3, 1, 0 }, { -3, 1, 0 }, | ||
164 | { EOB }, { 4, 1, 0 }, { -4, 1, 0 }, { 5, 1, 0 }, { -5, 1, 0 }, { 6, 1, 0 }, | ||
165 | { -6, 1, 0 }, { 1, 2, 0 }, { -1, 2, 0 }, { 7, 1, 0 }, { -7, 1, 0 }, { 8, 1, 1 }, | ||
166 | { -8, 1, 1 }, { 2, 2, 0 }, { -2, 2, 0 }, { 9, 1, 1 }, { -9, 1, 1 }, { 10, 1, 1 }, | ||
167 | {-10, 1, 1 }, { 1, 3, 0 }, { -1, 3, 0 }, { 3, 2, 0 }, { -3, 2, 0 }, { 11, 1, 2 }, | ||
168 | {-11, 1, 2 }, { 4, 2, 0 }, { -4, 2, 0 }, { 12, 1, 2 }, {-12, 1, 2 }, { 13, 1, 2 }, | ||
169 | {-13, 1, 2 }, { 5, 2, 0 }, { -5, 2, 0 }, { 1, 4, 0 }, { -1, 4, 0 }, { 2, 3, 0 }, | ||
170 | { -2, 3, 0 }, { 14, 1, 2 }, {-14, 1, 2 }, { 6, 2, 0 }, { -6, 2, 0 }, { 15, 1, 2 }, | ||
171 | {-15, 1, 2 }, { 16, 1, 2 }, {-16, 1, 2 }, { 3, 3, 0 }, { -3, 3, 0 }, { 1, 5, 0 }, | ||
172 | { -1, 5, 0 }, { 7, 2, 0 }, { -7, 2, 0 }, { 17, 1, 2 }, {-17, 1, 2 } | ||
173 | }, | ||
174 | //level_add | ||
175 | { 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 }, | ||
176 | 2, //golomb_order | ||
177 | 7, //inc_limit | ||
178 | 5, //max_run | ||
179 | }, | ||
180 | { | ||
181 | { //level / run | ||
182 | { EOB }, { 1, 1, 0 }, { -1, 1, 0 }, { 2, 1, 0 }, { -2, 1, 0 }, { 3, 1, 0 }, | ||
183 | { -3, 1, 0 }, { 4, 1, 0 }, { -4, 1, 0 }, { 5, 1, 0 }, { -5, 1, 0 }, { 6, 1, 0 }, | ||
184 | { -6, 1, 0 }, { 7, 1, 0 }, { -7, 1, 0 }, { 8, 1, 0 }, { -8, 1, 0 }, { 9, 1, 0 }, | ||
185 | { -9, 1, 0 }, { 10, 1, 0 }, {-10, 1, 0 }, { 1, 2, 0 }, { -1, 2, 0 }, { 11, 1, 1 }, | ||
186 | {-11, 1, 1 }, { 12, 1, 1 }, {-12, 1, 1 }, { 13, 1, 1 }, {-13, 1, 1 }, { 2, 2, 0 }, | ||
187 | { -2, 2, 0 }, { 14, 1, 1 }, {-14, 1, 1 }, { 15, 1, 1 }, {-15, 1, 1 }, { 3, 2, 0 }, | ||
188 | { -3, 2, 0 }, { 16, 1, 1 }, {-16, 1, 1 }, { 1, 3, 0 }, { -1, 3, 0 }, { 17, 1, 1 }, | ||
189 | {-17, 1, 1 }, { 4, 2, 0 }, { -4, 2, 0 }, { 18, 1, 1 }, {-18, 1, 1 }, { 5, 2, 0 }, | ||
190 | { -5, 2, 0 }, { 19, 1, 1 }, {-19, 1, 1 }, { 20, 1, 1 }, {-20, 1, 1 }, { 6, 2, 0 }, | ||
191 | { -6, 2, 0 }, { 21, 1, 1 }, {-21, 1, 1 }, { 2, 3, 0 }, { -2, 3, 0 } | ||
192 | }, | ||
193 | //level_add | ||
194 | { 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 }, | ||
195 | 2, //golomb_order | ||
196 | 10, //inc_limit | ||
197 | 3, //max_run | ||
198 | }, | ||
199 | { | ||
200 | { //level / run | ||
201 | { EOB }, { 1, 1, 0 }, { -1, 1, 0 }, { 2, 1, 0 }, { -2, 1, 0 }, { 3, 1, 0 }, | ||
202 | { -3, 1, 0 }, { 4, 1, 0 }, { -4, 1, 0 }, { 5, 1, 0 }, { -5, 1, 0 }, { 6, 1, 0 }, | ||
203 | { -6, 1, 0 }, { 7, 1, 0 }, { -7, 1, 0 }, { 8, 1, 0 }, { -8, 1, 0 }, { 9, 1, 0 }, | ||
204 | { -9, 1, 0 }, { 10, 1, 0 }, {-10, 1, 0 }, { 11, 1, 0 }, {-11, 1, 0 }, { 12, 1, 0 }, | ||
205 | {-12, 1, 0 }, { 13, 1, 0 }, {-13, 1, 0 }, { 14, 1, 0 }, {-14, 1, 0 }, { 15, 1, 0 }, | ||
206 | {-15, 1, 0 }, { 16, 1, 0 }, {-16, 1, 0 }, { 1, 2, 0 }, { -1, 2, 0 }, { 17, 1, 0 }, | ||
207 | {-17, 1, 0 }, { 18, 1, 0 }, {-18, 1, 0 }, { 19, 1, 0 }, {-19, 1, 0 }, { 20, 1, 0 }, | ||
208 | {-20, 1, 0 }, { 21, 1, 0 }, {-21, 1, 0 }, { 2, 2, 0 }, { -2, 2, 0 }, { 22, 1, 0 }, | ||
209 | {-22, 1, 0 }, { 23, 1, 0 }, {-23, 1, 0 }, { 24, 1, 0 }, {-24, 1, 0 }, { 25, 1, 0 }, | ||
210 | {-25, 1, 0 }, { 3, 2, 0 }, { -3, 2, 0 }, { 26, 1, 0 }, {-26, 1, 0 } | ||
211 | }, | ||
212 | //level_add | ||
213 | { 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 }, | ||
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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2 }, | ||
236 | 3, //golomb_order | ||
237 | 0, //inc_limit | ||
238 | 26 //max_run | ||
239 | }, | ||
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, 2, 2, 2, -1, -1, -1, -1, -1, -1, -1 }, | ||
255 | 2, //golomb_order | ||
256 | 1, //inc_limit | ||
257 | 19 //max_run | ||
258 | }, | ||
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, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, | ||
274 | 2, //golomb_order | ||
275 | 2, //inc_limit | ||
276 | 14 //max_run | ||
277 | }, | ||
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, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, | ||
293 | 2, //golomb_order | ||
294 | 3, //inc_limit | ||
295 | 10 //max_run | ||
296 | }, | ||
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, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, | ||
312 | 2, //golomb_order | ||
313 | 6, //inc_limit | ||
314 | 7 //max_run | ||
315 | }, | ||
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, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, | ||
331 | 2, //golomb_order | ||
332 | 9, //inc_limit | ||
333 | 5 //max_run | ||
334 | }, | ||
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, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, | ||
350 | 2, //golomb_order | ||
351 | INT_MAX, //inc_limit | ||
352 | 4 //max_run | ||
353 | } | ||
354 | }; | ||
355 | |||
356 | static const struct dec_2dvlc chroma_dec[5] = { | ||
357 | { | ||
358 | { //level / run | ||
359 | { 1, 1, 1 }, { -1, 1, 1 }, { 1, 2, 1 }, { -1, 2, 1 }, { 1, 3, 1 }, { -1, 3, 1 }, | ||
360 | { 1, 4, 1 }, { -1, 4, 1 }, { 1, 5, 1 }, { -1, 5, 1 }, { 1, 6, 1 }, { -1, 6, 1 }, | ||
361 | { 1, 7, 1 }, { -1, 7, 1 }, { 2, 1, 2 }, { -2, 1, 2 }, { 1, 8, 1 }, { -1, 8, 1 }, | ||
362 | { 1, 9, 1 }, { -1, 9, 1 }, { 1, 10, 1 }, { -1, 10, 1 }, { 1, 11, 1 }, { -1, 11, 1 }, | ||
363 | { 1, 12, 1 }, { -1, 12, 1 }, { 1, 13, 1 }, { -1, 13, 1 }, { 1, 14, 1 }, { -1, 14, 1 }, | ||
364 | { 1, 15, 1 }, { -1, 15, 1 }, { 3, 1, 3 }, { -3, 1, 3 }, { 1, 16, 1 }, { -1, 16, 1 }, | ||
365 | { 1, 17, 1 }, { -1, 17, 1 }, { 1, 18, 1 }, { -1, 18, 1 }, { 1, 19, 1 }, { -1, 19, 1 }, | ||
366 | { 1, 20, 1 }, { -1, 20, 1 }, { 1, 21, 1 }, { -1, 21, 1 }, { 1, 22, 1 }, { -1, 22, 1 }, | ||
367 | { 2, 2, 2 }, { -2, 2, 2 }, { 1, 23, 1 }, { -1, 23, 1 }, { 1, 24, 1 }, { -1, 24, 1 }, | ||
368 | { 1, 25, 1 }, { -1, 25, 1 }, { 4, 1, 3 }, { -4, 1, 3 }, { EOB } | ||
369 | }, | ||
370 | //level_add | ||
371 | { 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 }, | ||
372 | 2, //golomb_order | ||
373 | 0, //inc_limit | ||
374 | 25 //max_run | ||
375 | }, | ||
376 | { | ||
377 | { //level / run | ||
378 | { EOB }, { 1, 1, 0 }, { -1, 1, 0 }, { 1, 2, 0 }, { -1, 2, 0 }, { 2, 1, 1 }, | ||
379 | { -2, 1, 1 }, { 1, 3, 0 }, { -1, 3, 0 }, { 1, 4, 0 }, { -1, 4, 0 }, { 1, 5, 0 }, | ||
380 | { -1, 5, 0 }, { 1, 6, 0 }, { -1, 6, 0 }, { 3, 1, 2 }, { -3, 1, 2 }, { 1, 7, 0 }, | ||
381 | { -1, 7, 0 }, { 1, 8, 0 }, { -1, 8, 0 }, { 2, 2, 1 }, { -2, 2, 1 }, { 1, 9, 0 }, | ||
382 | { -1, 9, 0 }, { 1, 10, 0 }, { -1, 10, 0 }, { 1, 11, 0 }, { -1, 11, 0 }, { 4, 1, 2 }, | ||
383 | { -4, 1, 2 }, { 1, 12, 0 }, { -1, 12, 0 }, { 1, 13, 0 }, { -1, 13, 0 }, { 1, 14, 0 }, | ||
384 | { -1, 14, 0 }, { 2, 3, 1 }, { -2, 3, 1 }, { 1, 15, 0 }, { -1, 15, 0 }, { 2, 4, 1 }, | ||
385 | { -2, 4, 1 }, { 5, 1, 3 }, { -5, 1, 3 }, { 3, 2, 2 }, { -3, 2, 2 }, { 1, 16, 0 }, | ||
386 | { -1, 16, 0 }, { 1, 17, 0 }, { -1, 17, 0 }, { 1, 18, 0 }, { -1, 18, 0 }, { 2, 5, 1 }, | ||
387 | { -2, 5, 1 }, { 1, 19, 0 }, { -1, 19, 0 }, { 1, 20, 0 }, { -1, 20, 0 } | ||
388 | }, | ||
389 | //level_add | ||
390 | { 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 }, | ||
391 | 0, //golomb_order | ||
392 | 1, //inc_limit | ||
393 | 20 //max_run | ||
394 | }, | ||
395 | { | ||
396 | { //level / run | ||
397 | { 1, 1, 0 }, { -1, 1, 0 }, { EOB }, { 2, 1, 0 }, { -2, 1, 0 }, { 1, 2, 0 }, | ||
398 | { -1, 2, 0 }, { 3, 1, 1 }, { -3, 1, 1 }, { 1, 3, 0 }, { -1, 3, 0 }, { 4, 1, 1 }, | ||
399 | { -4, 1, 1 }, { 2, 2, 0 }, { -2, 2, 0 }, { 1, 4, 0 }, { -1, 4, 0 }, { 5, 1, 2 }, | ||
400 | { -5, 1, 2 }, { 1, 5, 0 }, { -1, 5, 0 }, { 3, 2, 1 }, { -3, 2, 1 }, { 2, 3, 0 }, | ||
401 | { -2, 3, 0 }, { 1, 6, 0 }, { -1, 6, 0 }, { 6, 1, 2 }, { -6, 1, 2 }, { 1, 7, 0 }, | ||
402 | { -1, 7, 0 }, { 2, 4, 0 }, { -2, 4, 0 }, { 7, 1, 2 }, { -7, 1, 2 }, { 1, 8, 0 }, | ||
403 | { -1, 8, 0 }, { 4, 2, 1 }, { -4, 2, 1 }, { 1, 9, 0 }, { -1, 9, 0 }, { 3, 3, 1 }, | ||
404 | { -3, 3, 1 }, { 2, 5, 0 }, { -2, 5, 0 }, { 2, 6, 0 }, { -2, 6, 0 }, { 8, 1, 2 }, | ||
405 | { -8, 1, 2 }, { 1, 10, 0 }, { -1, 10, 0 }, { 1, 11, 0 }, { -1, 11, 0 }, { 9, 1, 2 }, | ||
406 | { -9, 1, 2 }, { 5, 2, 2 }, { -5, 2, 2 }, { 3, 4, 1 }, { -3, 4, 1 }, | ||
407 | }, | ||
408 | //level_add | ||
409 | { 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 }, | ||
410 | 1, //golomb_order | ||
411 | 2, //inc_limit | ||
412 | 11 //max_run | ||
413 | }, | ||
414 | { | ||
415 | { //level / run | ||
416 | { EOB }, { 1, 1, 0 }, { -1, 1, 0 }, { 2, 1, 0 }, { -2, 1, 0 }, { 3, 1, 0 }, | ||
417 | { -3, 1, 0 }, { 4, 1, 0 }, { -4, 1, 0 }, { 1, 2, 0 }, { -1, 2, 0 }, { 5, 1, 1 }, | ||
418 | { -5, 1, 1 }, { 2, 2, 0 }, { -2, 2, 0 }, { 6, 1, 1 }, { -6, 1, 1 }, { 1, 3, 0 }, | ||
419 | { -1, 3, 0 }, { 7, 1, 1 }, { -7, 1, 1 }, { 3, 2, 0 }, { -3, 2, 0 }, { 8, 1, 1 }, | ||
420 | { -8, 1, 1 }, { 1, 4, 0 }, { -1, 4, 0 }, { 2, 3, 0 }, { -2, 3, 0 }, { 9, 1, 1 }, | ||
421 | { -9, 1, 1 }, { 4, 2, 0 }, { -4, 2, 0 }, { 1, 5, 0 }, { -1, 5, 0 }, { 10, 1, 1 }, | ||
422 | {-10, 1, 1 }, { 3, 3, 0 }, { -3, 3, 0 }, { 5, 2, 1 }, { -5, 2, 1 }, { 2, 4, 0 }, | ||
423 | { -2, 4, 0 }, { 11, 1, 1 }, {-11, 1, 1 }, { 1, 6, 0 }, { -1, 6, 0 }, { 12, 1, 1 }, | ||
424 | {-12, 1, 1 }, { 1, 7, 0 }, { -1, 7, 0 }, { 6, 2, 1 }, { -6, 2, 1 }, { 13, 1, 1 }, | ||
425 | {-13, 1, 1 }, { 2, 5, 0 }, { -2, 5, 0 }, { 1, 8, 0 }, { -1, 8, 0 }, | ||
426 | }, | ||
427 | //level_add | ||
428 | { 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 }, | ||
429 | 1, //golomb_order | ||
430 | 4, //inc_limit | ||
431 | 8 //max_run | ||
432 | }, | ||
433 | { | ||
434 | { //level / run | ||
435 | { EOB }, { 1, 1, 0 }, { -1, 1, 0 }, { 2, 1, 0 }, { -2, 1, 0 }, { 3, 1, 0 }, | ||
436 | { -3, 1, 0 }, { 4, 1, 0 }, { -4, 1, 0 }, { 5, 1, 0 }, { -5, 1, 0 }, { 6, 1, 0 }, | ||
437 | { -6, 1, 0 }, { 7, 1, 0 }, { -7, 1, 0 }, { 8, 1, 0 }, { -8, 1, 0 }, { 1, 2, 0 }, | ||
438 | { -1, 2, 0 }, { 9, 1, 0 }, { -9, 1, 0 }, { 10, 1, 0 }, { -10, 1, 0 }, { 11, 1, 0 }, | ||
439 | { -11, 1, 0 }, { 2, 2, 0 }, { -2, 2, 0 }, { 12, 1, 0 }, { -12, 1, 0 }, { 13, 1, 0 }, | ||
440 | { -13, 1, 0 }, { 3, 2, 0 }, { -3, 2, 0 }, { 14, 1, 0 }, { -14, 1, 0 }, { 1, 3, 0 }, | ||
441 | { -1, 3, 0 }, { 15, 1, 0 }, { -15, 1, 0 }, { 4, 2, 0 }, { -4, 2, 0 }, { 16, 1, 0 }, | ||
442 | { -16, 1, 0 }, { 17, 1, 0 }, { -17, 1, 0 }, { 5, 2, 0 }, { -5, 2, 0 }, { 1, 4, 0 }, | ||
443 | { -1, 4, 0 }, { 2, 3, 0 }, { -2, 3, 0 }, { 18, 1, 0 }, { -18, 1, 0 }, { 6, 2, 0 }, | ||
444 | { -6, 2, 0 }, { 19, 1, 0 }, { -19, 1, 0 }, { 1, 5, 0 }, { -1, 5, 0 }, | ||
445 | }, | ||
446 | //level_add | ||
447 | { 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 }, | ||
448 | 0, //golomb_order | ||
449 | INT_MAX, //inc_limit | ||
450 | 5, //max_run | ||
451 | } | ||
452 | }; | ||
453 | |||
454 | #undef EOB | ||
455 | |||
456 | /***************************************************************************** | ||
457 | * | ||
458 | * motion vector prediction | ||
459 | * | ||
460 | ****************************************************************************/ | ||
461 | |||
462 | 83018 | static inline void store_mvs(AVSContext *h) | |
463 | { | ||
464 | 83018 | h->col_mv[h->mbidx * 4 + 0] = h->mv[MV_FWD_X0]; | |
465 | 83018 | h->col_mv[h->mbidx * 4 + 1] = h->mv[MV_FWD_X1]; | |
466 | 83018 | h->col_mv[h->mbidx * 4 + 2] = h->mv[MV_FWD_X2]; | |
467 | 83018 | h->col_mv[h->mbidx * 4 + 3] = h->mv[MV_FWD_X3]; | |
468 | 83018 | } | |
469 | |||
470 | 529812 | static inline void mv_pred_direct(AVSContext *h, cavs_vector *pmv_fw, | |
471 | cavs_vector *col_mv) | ||
472 | { | ||
473 | 529812 | cavs_vector *pmv_bw = pmv_fw + MV_BWD_OFFS; | |
474 | 529812 | unsigned den = h->direct_den[col_mv->ref]; | |
475 | 529812 | int m = FF_SIGNBIT(col_mv->x); | |
476 | |||
477 | 529812 | pmv_fw->dist = h->dist[1]; | |
478 | 529812 | pmv_bw->dist = h->dist[0]; | |
479 | 529812 | pmv_fw->ref = 1; | |
480 | 529812 | pmv_bw->ref = 0; | |
481 | /* scale the co-located motion vector according to its temporal span */ | ||
482 | 529812 | pmv_fw->x = (((den + (den * col_mv->x * pmv_fw->dist ^ m) - m - 1) >> 14) ^ m) - m; | |
483 | 529812 | pmv_bw->x = m - (((den + (den * col_mv->x * pmv_bw->dist ^ m) - m - 1) >> 14) ^ m); | |
484 | 529812 | m = FF_SIGNBIT(col_mv->y); | |
485 | 529812 | pmv_fw->y = (((den + (den * col_mv->y * pmv_fw->dist ^ m) - m - 1) >> 14) ^ m) - m; | |
486 | 529812 | pmv_bw->y = m - (((den + (den * col_mv->y * pmv_bw->dist ^ m) - m - 1) >> 14) ^ m); | |
487 | 529812 | } | |
488 | |||
489 | 28390 | static inline void mv_pred_sym(AVSContext *h, cavs_vector *src, | |
490 | enum cavs_block size) | ||
491 | { | ||
492 | 28390 | cavs_vector *dst = src + MV_BWD_OFFS; | |
493 | |||
494 | /* backward mv is the scaled and negated forward mv */ | ||
495 | 28390 | dst->x = -((src->x * h->sym_factor + 256) >> 9); | |
496 | 28390 | dst->y = -((src->y * h->sym_factor + 256) >> 9); | |
497 | 28390 | dst->ref = 0; | |
498 | 28390 | dst->dist = h->dist[0]; | |
499 | 28390 | set_mvs(dst, size); | |
500 | 28390 | } | |
501 | |||
502 | /***************************************************************************** | ||
503 | * | ||
504 | * residual data decoding | ||
505 | * | ||
506 | ****************************************************************************/ | ||
507 | |||
508 | /** kth-order exponential golomb code */ | ||
509 | 2813702 | static inline int get_ue_code(GetBitContext *gb, int order) | |
510 | { | ||
511 | 2813702 | unsigned ret = get_ue_golomb(gb); | |
512 |
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2813702 | if (ret >= ((1U<<31)>>order)) { |
513 | 3 | av_log(NULL, AV_LOG_ERROR, "get_ue_code: value too large\n"); | |
514 | 3 | return AVERROR_INVALIDDATA; | |
515 | } | ||
516 |
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2813699 | if (order) { |
517 | 2422294 | return (ret<<order) + get_bits(gb, order); | |
518 | } | ||
519 | 391405 | return ret; | |
520 | } | ||
521 | |||
522 | 361628 | static inline int dequant(AVSContext *h, int16_t *level_buf, uint8_t *run_buf, | |
523 | int16_t *dst, int mul, int shift, int coeff_num) | ||
524 | { | ||
525 | 361628 | int round = 1 << (shift - 1); | |
526 | 361628 | int pos = -1; | |
527 | 361628 | const uint8_t *scantab = h->permutated_scantable; | |
528 | |||
529 | /* inverse scan and dequantization */ | ||
530 |
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2740403 | while (--coeff_num >= 0) { |
531 | 2378775 | pos += run_buf[coeff_num]; | |
532 |
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2378775 | if (pos > 63) { |
533 | ✗ | av_log(h->avctx, AV_LOG_ERROR, | |
534 | "position out of block bounds at pic %d MB(%d,%d)\n", | ||
535 | h->cur.poc, h->mbx, h->mby); | ||
536 | ✗ | return AVERROR_INVALIDDATA; | |
537 | } | ||
538 | 2378775 | dst[scantab[pos]] = (level_buf[coeff_num] * mul + round) >> shift; | |
539 | } | ||
540 | 361628 | return 0; | |
541 | } | ||
542 | |||
543 | /** | ||
544 | * decode coefficients from one 8x8 block, dequantize, inverse transform | ||
545 | * and add them to sample block | ||
546 | * @param r pointer to 2D VLC table | ||
547 | * @param esc_golomb_order escape codes are k-golomb with this order k | ||
548 | * @param qp quantizer | ||
549 | * @param dst location of sample block | ||
550 | * @param stride line stride in frame buffer | ||
551 | */ | ||
552 | 361631 | static int decode_residual_block(AVSContext *h, GetBitContext *gb, | |
553 | const struct dec_2dvlc *r, int esc_golomb_order, | ||
554 | int qp, uint8_t *dst, ptrdiff_t stride) | ||
555 | { | ||
556 | int i, esc_code, level, mask, ret; | ||
557 | unsigned int level_code, run; | ||
558 | int16_t level_buf[65]; | ||
559 | uint8_t run_buf[65]; | ||
560 | 361631 | int16_t *block = h->block; | |
561 | |||
562 |
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2740409 | for (i = 0; i < 65; i++) { |
563 | 2740409 | level_code = get_ue_code(gb, r->golomb_order); | |
564 |
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|
2740409 | if (level_code >= ESCAPE_CODE) { |
565 | 73296 | run = ((level_code - ESCAPE_CODE) >> 1) + 1; | |
566 |
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73296 | if(run > 64) { |
567 | 3 | av_log(h->avctx, AV_LOG_ERROR, "run %d is too large\n", run); | |
568 | 3 | return AVERROR_INVALIDDATA; | |
569 | } | ||
570 | 73293 | esc_code = get_ue_code(gb, esc_golomb_order); | |
571 |
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73293 | if (esc_code < 0 || esc_code > 32767) { |
572 | ✗ | av_log(h->avctx, AV_LOG_ERROR, "esc_code invalid\n"); | |
573 | ✗ | return AVERROR_INVALIDDATA; | |
574 | } | ||
575 | |||
576 |
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73293 | level = esc_code + (run > r->max_run ? 1 : r->level_add[run]); |
577 |
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142752 | while (level > r->inc_limit) |
578 | 69459 | r++; | |
579 | 73293 | mask = -(level_code & 1); | |
580 | 73293 | level = (level ^ mask) - mask; | |
581 | } else { | ||
582 | 2667113 | level = r->rltab[level_code][0]; | |
583 |
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2667113 | if (!level) //end of block signal |
584 | 361628 | break; | |
585 | 2305485 | run = r->rltab[level_code][1]; | |
586 | 2305485 | r += r->rltab[level_code][2]; | |
587 | } | ||
588 | 2378778 | level_buf[i] = level; | |
589 | 2378778 | run_buf[i] = run; | |
590 | } | ||
591 |
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361628 | if ((ret = dequant(h, level_buf, run_buf, block, dequant_mul[qp], |
592 | 361628 | dequant_shift[qp], i)) < 0) | |
593 | ✗ | return ret; | |
594 | 361628 | h->cdsp.cavs_idct8_add(dst, block, stride); | |
595 | 361628 | h->bdsp.clear_block(block); | |
596 | 361628 | return 0; | |
597 | } | ||
598 | |||
599 | |||
600 | 174807 | static inline int decode_residual_chroma(AVSContext *h) | |
601 | { | ||
602 |
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174807 | if (h->cbp & (1 << 4)) { |
603 | 63931 | int ret = decode_residual_block(h, &h->gb, chroma_dec, 0, | |
604 | 63931 | ff_cavs_chroma_qp[h->qp], h->cu, h->c_stride); | |
605 |
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63931 | if (ret < 0) |
606 | 1 | return ret; | |
607 | } | ||
608 |
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174806 | if (h->cbp & (1 << 5)) { |
609 | 71290 | int ret = decode_residual_block(h, &h->gb, chroma_dec, 0, | |
610 | 71290 | ff_cavs_chroma_qp[h->qp], h->cv, h->c_stride); | |
611 |
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71290 | if (ret < 0) |
612 | ✗ | return ret; | |
613 | } | ||
614 | 174806 | return 0; | |
615 | } | ||
616 | |||
617 | 145359 | static inline int decode_residual_inter(AVSContext *h) | |
618 | { | ||
619 | int block; | ||
620 | |||
621 | /* get coded block pattern */ | ||
622 | 145359 | int cbp = get_ue_golomb(&h->gb); | |
623 |
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145359 | if (cbp > 63U) { |
624 | ✗ | av_log(h->avctx, AV_LOG_ERROR, "illegal inter cbp %d\n", cbp); | |
625 | ✗ | return AVERROR_INVALIDDATA; | |
626 | } | ||
627 | 145359 | h->cbp = cbp_tab[cbp][1]; | |
628 | |||
629 | /* get quantizer */ | ||
630 |
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145359 | if (h->cbp && !h->qp_fixed) |
631 | ✗ | h->qp = (h->qp + (unsigned)get_se_golomb(&h->gb)) & 63; | |
632 |
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726795 | for (block = 0; block < 4; block++) |
633 |
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581436 | if (h->cbp & (1 << block)) |
634 | 182411 | decode_residual_block(h, &h->gb, inter_dec, 0, h->qp, | |
635 | 182411 | h->cy + h->luma_scan[block], h->l_stride); | |
636 | 145359 | decode_residual_chroma(h); | |
637 | |||
638 | 145359 | return 0; | |
639 | } | ||
640 | |||
641 | /***************************************************************************** | ||
642 | * | ||
643 | * macroblock level | ||
644 | * | ||
645 | ****************************************************************************/ | ||
646 | |||
647 | 29448 | static inline void set_mv_intra(AVSContext *h) | |
648 | { | ||
649 | 29448 | h->mv[MV_FWD_X0] = ff_cavs_intra_mv; | |
650 | 29448 | set_mvs(&h->mv[MV_FWD_X0], BLK_16X16); | |
651 | 29448 | h->mv[MV_BWD_X0] = ff_cavs_intra_mv; | |
652 | 29448 | set_mvs(&h->mv[MV_BWD_X0], BLK_16X16); | |
653 |
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29448 | if (h->cur.f->pict_type != AV_PICTURE_TYPE_B) |
654 | 25882 | h->col_type_base[h->mbidx] = I_8X8; | |
655 | 29448 | } | |
656 | |||
657 | 29448 | static int decode_mb_i(AVSContext *h, int cbp_code) | |
658 | { | ||
659 | 29448 | GetBitContext *gb = &h->gb; | |
660 | unsigned pred_mode_uv; | ||
661 | int block; | ||
662 | uint8_t top[18]; | ||
663 | 29448 | uint8_t *left = NULL; | |
664 | uint8_t *d; | ||
665 | int ret; | ||
666 | |||
667 | 29448 | ff_cavs_init_mb(h); | |
668 | |||
669 | /* get intra prediction modes from stream */ | ||
670 |
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147240 | for (block = 0; block < 4; block++) { |
671 | int nA, nB, predpred; | ||
672 | 117792 | int pos = scan3x3[block]; | |
673 | |||
674 | 117792 | nA = h->pred_mode_Y[pos - 1]; | |
675 | 117792 | nB = h->pred_mode_Y[pos - 3]; | |
676 | 117792 | predpred = FFMIN(nA, nB); | |
677 |
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117792 | if (predpred == NOT_AVAIL) // if either is not available |
678 | 2126 | predpred = INTRA_L_LP; | |
679 |
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117792 | if (!get_bits1(gb)) { |
680 | 23610 | int rem_mode = get_bits(gb, 2); | |
681 | 23610 | predpred = rem_mode + (rem_mode >= predpred); | |
682 | } | ||
683 | 117792 | h->pred_mode_Y[pos] = predpred; | |
684 | } | ||
685 | 29448 | pred_mode_uv = get_ue_golomb_31(gb); | |
686 |
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29448 | if (pred_mode_uv > 6) { |
687 | ✗ | av_log(h->avctx, AV_LOG_ERROR, "illegal intra chroma pred mode\n"); | |
688 | ✗ | return AVERROR_INVALIDDATA; | |
689 | } | ||
690 | 29448 | ff_cavs_modify_mb_i(h, &pred_mode_uv); | |
691 | |||
692 | /* get coded block pattern */ | ||
693 |
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29448 | if (h->cur.f->pict_type == AV_PICTURE_TYPE_I) |
694 | 18180 | cbp_code = get_ue_golomb(gb); | |
695 |
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29448 | if (cbp_code > 63U) { |
696 | ✗ | av_log(h->avctx, AV_LOG_ERROR, "illegal intra cbp\n"); | |
697 | ✗ | return AVERROR_INVALIDDATA; | |
698 | } | ||
699 | 29448 | h->cbp = cbp_tab[cbp_code][0]; | |
700 |
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29448 | if (h->cbp && !h->qp_fixed) |
701 | 2289 | h->qp = (h->qp + (unsigned)get_se_golomb(gb)) & 63; //qp_delta | |
702 | |||
703 | /* luma intra prediction interleaved with residual decode/transform/add */ | ||
704 |
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147240 | for (block = 0; block < 4; block++) { |
705 | 117792 | d = h->cy + h->luma_scan[block]; | |
706 | 117792 | ff_cavs_load_intra_pred_luma(h, top, &left, block); | |
707 | 117792 | h->intra_pred_l[h->pred_mode_Y[scan3x3[block]]] | |
708 | (d, top, left, h->l_stride); | ||
709 |
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117792 | if (h->cbp & (1<<block)) { |
710 | 43999 | ret = decode_residual_block(h, gb, intra_dec, 1, h->qp, d, h->l_stride); | |
711 |
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43999 | if (ret < 0) |
712 | ✗ | return ret; | |
713 | } | ||
714 | } | ||
715 | |||
716 | /* chroma intra prediction */ | ||
717 | 29448 | ff_cavs_load_intra_pred_chroma(h); | |
718 | 29448 | h->intra_pred_c[pred_mode_uv](h->cu, &h->top_border_u[h->mbx * 10], | |
719 | 29448 | h->left_border_u, h->c_stride); | |
720 | 29448 | h->intra_pred_c[pred_mode_uv](h->cv, &h->top_border_v[h->mbx * 10], | |
721 | 29448 | h->left_border_v, h->c_stride); | |
722 | |||
723 | 29448 | ret = decode_residual_chroma(h); | |
724 |
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29448 | if (ret < 0) |
725 | ✗ | return ret; | |
726 | 29448 | ff_cavs_filter(h, I_8X8); | |
727 | 29448 | set_mv_intra(h); | |
728 | 29448 | return 0; | |
729 | } | ||
730 | |||
731 | 275137 | static inline void set_intra_mode_default(AVSContext *h) | |
732 | { | ||
733 |
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275137 | if (h->stream_revision > 0) { |
734 | ✗ | h->pred_mode_Y[3] = h->pred_mode_Y[6] = NOT_AVAIL; | |
735 | ✗ | h->top_pred_Y[h->mbx * 2 + 0] = h->top_pred_Y[h->mbx * 2 + 1] = NOT_AVAIL; | |
736 | } else { | ||
737 | 275137 | h->pred_mode_Y[3] = h->pred_mode_Y[6] = INTRA_L_LP; | |
738 | 275137 | h->top_pred_Y[h->mbx * 2 + 0] = h->top_pred_Y[h->mbx * 2 + 1] = INTRA_L_LP; | |
739 | } | ||
740 | 275137 | } | |
741 | |||
742 | 83018 | static void decode_mb_p(AVSContext *h, enum cavs_mb mb_type) | |
743 | { | ||
744 | 83018 | GetBitContext *gb = &h->gb; | |
745 | int ref[4]; | ||
746 | |||
747 | 83018 | ff_cavs_init_mb(h); | |
748 |
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83018 | switch (mb_type) { |
749 | 20801 | case P_SKIP: | |
750 | 20801 | ff_cavs_mv(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_PSKIP, BLK_16X16, 0); | |
751 | 20801 | break; | |
752 | 48877 | case P_16X16: | |
753 |
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48877 | ref[0] = h->ref_flag ? 0 : get_bits1(gb); |
754 | 48877 | ff_cavs_mv(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_MEDIAN, BLK_16X16, ref[0]); | |
755 | 48877 | break; | |
756 | 3399 | case P_16X8: | |
757 |
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3399 | ref[0] = h->ref_flag ? 0 : get_bits1(gb); |
758 |
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3399 | ref[2] = h->ref_flag ? 0 : get_bits1(gb); |
759 | 3399 | ff_cavs_mv(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_TOP, BLK_16X8, ref[0]); | |
760 | 3399 | ff_cavs_mv(h, MV_FWD_X2, MV_FWD_A1, MV_PRED_LEFT, BLK_16X8, ref[2]); | |
761 | 3399 | break; | |
762 | 3154 | case P_8X16: | |
763 |
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3154 | ref[0] = h->ref_flag ? 0 : get_bits1(gb); |
764 |
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3154 | ref[1] = h->ref_flag ? 0 : get_bits1(gb); |
765 | 3154 | ff_cavs_mv(h, MV_FWD_X0, MV_FWD_B3, MV_PRED_LEFT, BLK_8X16, ref[0]); | |
766 | 3154 | ff_cavs_mv(h, MV_FWD_X1, MV_FWD_C2, MV_PRED_TOPRIGHT, BLK_8X16, ref[1]); | |
767 | 3154 | break; | |
768 | 6787 | case P_8X8: | |
769 |
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6787 | ref[0] = h->ref_flag ? 0 : get_bits1(gb); |
770 |
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6787 | ref[1] = h->ref_flag ? 0 : get_bits1(gb); |
771 |
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6787 | ref[2] = h->ref_flag ? 0 : get_bits1(gb); |
772 |
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6787 | ref[3] = h->ref_flag ? 0 : get_bits1(gb); |
773 | 6787 | ff_cavs_mv(h, MV_FWD_X0, MV_FWD_B3, MV_PRED_MEDIAN, BLK_8X8, ref[0]); | |
774 | 6787 | ff_cavs_mv(h, MV_FWD_X1, MV_FWD_C2, MV_PRED_MEDIAN, BLK_8X8, ref[1]); | |
775 | 6787 | ff_cavs_mv(h, MV_FWD_X2, MV_FWD_X1, MV_PRED_MEDIAN, BLK_8X8, ref[2]); | |
776 | 6787 | ff_cavs_mv(h, MV_FWD_X3, MV_FWD_X0, MV_PRED_MEDIAN, BLK_8X8, ref[3]); | |
777 | } | ||
778 | 83018 | ff_cavs_inter(h, mb_type); | |
779 | 83018 | set_intra_mode_default(h); | |
780 | 83018 | store_mvs(h); | |
781 |
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83018 | if (mb_type != P_SKIP) |
782 | 62217 | decode_residual_inter(h); | |
783 | 83018 | ff_cavs_filter(h, mb_type); | |
784 | 83018 | h->col_type_base[h->mbidx] = mb_type; | |
785 | 83018 | } | |
786 | |||
787 | 192119 | static int decode_mb_b(AVSContext *h, enum cavs_mb mb_type) | |
788 | { | ||
789 | int block; | ||
790 | enum cavs_sub_mb sub_type[4]; | ||
791 | int flags; | ||
792 | |||
793 | 192119 | ff_cavs_init_mb(h); | |
794 | |||
795 | /* reset all MVs */ | ||
796 | 192119 | h->mv[MV_FWD_X0] = ff_cavs_dir_mv; | |
797 | 192119 | set_mvs(&h->mv[MV_FWD_X0], BLK_16X16); | |
798 | 192119 | h->mv[MV_BWD_X0] = ff_cavs_dir_mv; | |
799 | 192119 | set_mvs(&h->mv[MV_BWD_X0], BLK_16X16); | |
800 |
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192119 | switch (mb_type) { |
801 | 146934 | case B_SKIP: | |
802 | case B_DIRECT: | ||
803 |
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146934 | if (!h->col_type_base[h->mbidx]) { |
804 | /* intra MB at co-location, do in-plane prediction */ | ||
805 | 14481 | ff_cavs_mv(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_BSKIP, BLK_16X16, 1); | |
806 | 14481 | ff_cavs_mv(h, MV_BWD_X0, MV_BWD_C2, MV_PRED_BSKIP, BLK_16X16, 0); | |
807 | } else | ||
808 | /* direct prediction from co-located P MB, block-wise */ | ||
809 |
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662265 | for (block = 0; block < 4; block++) |
810 | 529812 | mv_pred_direct(h, &h->mv[mv_scan[block]], | |
811 | 529812 | &h->col_mv[h->mbidx * 4 + block]); | |
812 | 146934 | break; | |
813 | 7402 | case B_FWD_16X16: | |
814 | 7402 | ff_cavs_mv(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_MEDIAN, BLK_16X16, 1); | |
815 | 7402 | break; | |
816 | 3134 | case B_SYM_16X16: | |
817 | 3134 | ff_cavs_mv(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_MEDIAN, BLK_16X16, 1); | |
818 | 3134 | mv_pred_sym(h, &h->mv[MV_FWD_X0], BLK_16X16); | |
819 | 3134 | break; | |
820 | 5806 | case B_BWD_16X16: | |
821 | 5806 | ff_cavs_mv(h, MV_BWD_X0, MV_BWD_C2, MV_PRED_MEDIAN, BLK_16X16, 0); | |
822 | 5806 | break; | |
823 | 13958 | case B_8X8: | |
824 | #define TMP_UNUSED_INX 7 | ||
825 | 13958 | flags = 0; | |
826 |
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69790 | for (block = 0; block < 4; block++) |
827 | 55832 | sub_type[block] = get_bits(&h->gb, 2); | |
828 |
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69790 | for (block = 0; block < 4; block++) { |
829 |
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55832 | switch (sub_type[block]) { |
830 | ✗ | case B_SUB_DIRECT: | |
831 | ✗ | if (!h->col_type_base[h->mbidx]) { | |
832 | /* intra MB at co-location, do in-plane prediction */ | ||
833 | ✗ | if(flags==0) { | |
834 | // if col-MB is a Intra MB, current Block size is 16x16. | ||
835 | // AVS standard section 9.9.1 | ||
836 | ✗ | if(block>0){ | |
837 | ✗ | h->mv[TMP_UNUSED_INX ] = h->mv[MV_FWD_X0 ]; | |
838 | ✗ | h->mv[TMP_UNUSED_INX + MV_BWD_OFFS] = h->mv[MV_FWD_X0 + MV_BWD_OFFS]; | |
839 | } | ||
840 | ✗ | ff_cavs_mv(h, MV_FWD_X0, MV_FWD_C2, | |
841 | MV_PRED_BSKIP, BLK_8X8, 1); | ||
842 | ✗ | ff_cavs_mv(h, MV_FWD_X0+MV_BWD_OFFS, | |
843 | MV_FWD_C2+MV_BWD_OFFS, | ||
844 | MV_PRED_BSKIP, BLK_8X8, 0); | ||
845 | ✗ | if(block>0) { | |
846 | ✗ | flags = mv_scan[block]; | |
847 | ✗ | h->mv[flags ] = h->mv[MV_FWD_X0 ]; | |
848 | ✗ | h->mv[flags + MV_BWD_OFFS] = h->mv[MV_FWD_X0 + MV_BWD_OFFS]; | |
849 | ✗ | h->mv[MV_FWD_X0 ] = h->mv[TMP_UNUSED_INX ]; | |
850 | ✗ | h->mv[MV_FWD_X0 + MV_BWD_OFFS] = h->mv[TMP_UNUSED_INX + MV_BWD_OFFS]; | |
851 | } else | ||
852 | ✗ | flags = MV_FWD_X0; | |
853 | } else { | ||
854 | ✗ | h->mv[mv_scan[block] ] = h->mv[flags ]; | |
855 | ✗ | h->mv[mv_scan[block] + MV_BWD_OFFS] = h->mv[flags + MV_BWD_OFFS]; | |
856 | } | ||
857 | } else | ||
858 | ✗ | mv_pred_direct(h, &h->mv[mv_scan[block]], | |
859 | ✗ | &h->col_mv[h->mbidx * 4 + block]); | |
860 | ✗ | break; | |
861 | 20568 | case B_SUB_FWD: | |
862 | 20568 | ff_cavs_mv(h, mv_scan[block], mv_scan[block] - 3, | |
863 | MV_PRED_MEDIAN, BLK_8X8, 1); | ||
864 | 20568 | break; | |
865 | 16611 | case B_SUB_SYM: | |
866 | 16611 | ff_cavs_mv(h, mv_scan[block], mv_scan[block] - 3, | |
867 | MV_PRED_MEDIAN, BLK_8X8, 1); | ||
868 | 16611 | mv_pred_sym(h, &h->mv[mv_scan[block]], BLK_8X8); | |
869 | 16611 | break; | |
870 | } | ||
871 | } | ||
872 | #undef TMP_UNUSED_INX | ||
873 |
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69790 | for (block = 0; block < 4; block++) { |
874 |
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55832 | if (sub_type[block] == B_SUB_BWD) |
875 | 18653 | ff_cavs_mv(h, mv_scan[block] + MV_BWD_OFFS, | |
876 | 18653 | mv_scan[block] + MV_BWD_OFFS - 3, | |
877 | MV_PRED_MEDIAN, BLK_8X8, 0); | ||
878 | } | ||
879 | 13958 | break; | |
880 | 14885 | default: | |
881 |
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14885 | if (mb_type <= B_SYM_16X16) { |
882 | ✗ | av_log(h->avctx, AV_LOG_ERROR, "Invalid mb_type %d in B frame\n", mb_type); | |
883 | ✗ | return AVERROR_INVALIDDATA; | |
884 | } | ||
885 | av_assert2(mb_type < B_8X8); | ||
886 | 14885 | flags = ff_cavs_partition_flags[mb_type]; | |
887 |
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|
14885 | if (mb_type & 1) { /* 16x8 macroblock types */ |
888 |
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|
7963 | if (flags & FWD0) |
889 | 5332 | ff_cavs_mv(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_TOP, BLK_16X8, 1); | |
890 |
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|
7963 | if (flags & SYM0) |
891 | 2146 | mv_pred_sym(h, &h->mv[MV_FWD_X0], BLK_16X8); | |
892 |
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|
7963 | if (flags & FWD1) |
893 | 5436 | ff_cavs_mv(h, MV_FWD_X2, MV_FWD_A1, MV_PRED_LEFT, BLK_16X8, 1); | |
894 |
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|
7963 | if (flags & SYM1) |
895 | 2500 | mv_pred_sym(h, &h->mv[MV_FWD_X2], BLK_16X8); | |
896 |
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|
7963 | if (flags & BWD0) |
897 | 2631 | ff_cavs_mv(h, MV_BWD_X0, MV_BWD_C2, MV_PRED_TOP, BLK_16X8, 0); | |
898 |
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|
7963 | if (flags & BWD1) |
899 | 2527 | ff_cavs_mv(h, MV_BWD_X2, MV_BWD_A1, MV_PRED_LEFT, BLK_16X8, 0); | |
900 | } else { /* 8x16 macroblock types */ | ||
901 |
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|
6922 | if (flags & FWD0) |
902 | 4634 | ff_cavs_mv(h, MV_FWD_X0, MV_FWD_B3, MV_PRED_LEFT, BLK_8X16, 1); | |
903 |
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|
6922 | if (flags & SYM0) |
904 | 1978 | mv_pred_sym(h, &h->mv[MV_FWD_X0], BLK_8X16); | |
905 |
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|
6922 | if (flags & FWD1) |
906 | 4590 | ff_cavs_mv(h, MV_FWD_X1, MV_FWD_C2, MV_PRED_TOPRIGHT, BLK_8X16, 1); | |
907 |
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|
6922 | if (flags & SYM1) |
908 | 2021 | mv_pred_sym(h, &h->mv[MV_FWD_X1], BLK_8X16); | |
909 |
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|
6922 | if (flags & BWD0) |
910 | 2288 | ff_cavs_mv(h, MV_BWD_X0, MV_BWD_B3, MV_PRED_LEFT, BLK_8X16, 0); | |
911 |
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|
6922 | if (flags & BWD1) |
912 | 2332 | ff_cavs_mv(h, MV_BWD_X1, MV_BWD_C2, MV_PRED_TOPRIGHT, BLK_8X16, 0); | |
913 | } | ||
914 | } | ||
915 | 192119 | ff_cavs_inter(h, mb_type); | |
916 | 192119 | set_intra_mode_default(h); | |
917 |
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|
192119 | if (mb_type != B_SKIP) |
918 | 83142 | decode_residual_inter(h); | |
919 | 192119 | ff_cavs_filter(h, mb_type); | |
920 | |||
921 | 192119 | return 0; | |
922 | } | ||
923 | |||
924 | /***************************************************************************** | ||
925 | * | ||
926 | * slice level | ||
927 | * | ||
928 | ****************************************************************************/ | ||
929 | |||
930 | 2 | static inline int decode_slice_header(AVSContext *h, GetBitContext *gb) | |
931 | { | ||
932 |
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2 | if (h->stc > 0xAF) |
933 | ✗ | av_log(h->avctx, AV_LOG_ERROR, "unexpected start code 0x%02x\n", h->stc); | |
934 | |||
935 |
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2 | if (h->stc >= h->mb_height) { |
936 | ✗ | av_log(h->avctx, AV_LOG_ERROR, "stc 0x%02x is too large\n", h->stc); | |
937 | ✗ | return AVERROR_INVALIDDATA; | |
938 | } | ||
939 | |||
940 | 2 | h->mby = h->stc; | |
941 | 2 | h->mbidx = h->mby * h->mb_width; | |
942 | |||
943 | /* mark top macroblocks as unavailable */ | ||
944 | 2 | h->flags &= ~(B_AVAIL | C_AVAIL); | |
945 |
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2 | if (!h->pic_qp_fixed) { |
946 | 2 | h->qp_fixed = get_bits1(gb); | |
947 | 2 | h->qp = get_bits(gb, 6); | |
948 | } | ||
949 | /* inter frame or second slice can have weighting params */ | ||
950 |
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2 | if ((h->cur.f->pict_type != AV_PICTURE_TYPE_I) || |
951 |
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1 | (!h->pic_structure && h->mby >= h->mb_width / 2)) |
952 |
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1 | if (get_bits1(gb)) { //slice_weighting_flag |
953 | 1 | av_log(h->avctx, AV_LOG_ERROR, | |
954 | "weighted prediction not yet supported\n"); | ||
955 | } | ||
956 | 2 | return 0; | |
957 | } | ||
958 | |||
959 | 304586 | static inline int check_for_slice(AVSContext *h) | |
960 | { | ||
961 | 304586 | GetBitContext *gb = &h->gb; | |
962 | int align; | ||
963 | |||
964 |
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304586 | if (h->mbx) |
965 | 297852 | return 0; | |
966 | 6734 | align = (-get_bits_count(gb)) & 7; | |
967 | /* check for stuffing byte */ | ||
968 |
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6734 | if (!align && (show_bits(gb, 8) == 0x80)) |
969 | 3 | align = 8; | |
970 |
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|
6734 | if ((show_bits_long(gb, 24 + align) & 0xFFFFFF) == 0x000001) { |
971 | 1 | skip_bits_long(gb, 24 + align); | |
972 | 1 | h->stc = get_bits(gb, 8); | |
973 |
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1 | if (h->stc >= h->mb_height) |
974 | ✗ | return 0; | |
975 | 1 | decode_slice_header(h, gb); | |
976 | 1 | return 1; | |
977 | } | ||
978 | 6733 | return 0; | |
979 | } | ||
980 | |||
981 | /***************************************************************************** | ||
982 | * | ||
983 | * frame level | ||
984 | * | ||
985 | ****************************************************************************/ | ||
986 | |||
987 | 187 | static int decode_pic(AVSContext *h) | |
988 | { | ||
989 | int ret; | ||
990 | 187 | int skip_count = -1; | |
991 | enum cavs_mb mb_type; | ||
992 | |||
993 |
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187 | if (!h->top_qp) { |
994 | ✗ | av_log(h->avctx, AV_LOG_ERROR, "No sequence header decoded yet\n"); | |
995 | ✗ | return AVERROR_INVALIDDATA; | |
996 | } | ||
997 | |||
998 | 187 | av_frame_unref(h->cur.f); | |
999 | |||
1000 | 187 | skip_bits(&h->gb, 16);//bbv_dwlay | |
1001 |
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187 | if (h->stc == PIC_PB_START_CODE) { |
1002 | 177 | h->cur.f->pict_type = get_bits(&h->gb, 2) + AV_PICTURE_TYPE_I; | |
1003 |
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177 | if (h->cur.f->pict_type > AV_PICTURE_TYPE_B) { |
1004 | ✗ | av_log(h->avctx, AV_LOG_ERROR, "illegal picture type\n"); | |
1005 | ✗ | return AVERROR_INVALIDDATA; | |
1006 | } | ||
1007 | /* make sure we have the reference frames we need */ | ||
1008 |
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177 | if (!h->DPB[0].f->data[0] || |
1009 |
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177 | (!h->DPB[1].f->data[0] && h->cur.f->pict_type == AV_PICTURE_TYPE_B)) |
1010 | ✗ | return AVERROR_INVALIDDATA; | |
1011 | } else { | ||
1012 | 10 | h->cur.f->pict_type = AV_PICTURE_TYPE_I; | |
1013 |
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10 | if (get_bits1(&h->gb)) |
1014 | ✗ | skip_bits(&h->gb, 24);//time_code | |
1015 | /* old sample clips were all progressive and no low_delay, | ||
1016 | bump stream revision if detected otherwise */ | ||
1017 |
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10 | if (h->low_delay || !(show_bits(&h->gb, 9) & 1)) |
1018 | 1 | h->stream_revision = 1; | |
1019 | /* similarly test top_field_first and repeat_first_field */ | ||
1020 |
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9 | else if (show_bits(&h->gb, 11) & 3) |
1021 | ✗ | h->stream_revision = 1; | |
1022 |
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10 | if (h->stream_revision > 0) |
1023 | 1 | skip_bits(&h->gb, 1); //marker_bit | |
1024 | } | ||
1025 | |||
1026 |
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|
187 | if (get_bits_left(&h->gb) < 23) |
1027 | ✗ | return AVERROR_INVALIDDATA; | |
1028 | |||
1029 | 187 | ret = ff_get_buffer(h->avctx, h->cur.f, h->cur.f->pict_type == AV_PICTURE_TYPE_B ? | |
1030 | 0 : AV_GET_BUFFER_FLAG_REF); | ||
1031 |
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187 | if (ret < 0) |
1032 | ✗ | return ret; | |
1033 | |||
1034 |
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187 | if (!h->edge_emu_buffer) { |
1035 | 5 | int alloc_size = FFALIGN(FFABS(h->cur.f->linesize[0]) + 32, 32); | |
1036 | 5 | h->edge_emu_buffer = av_mallocz(alloc_size * 2 * 24); | |
1037 |
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5 | if (!h->edge_emu_buffer) |
1038 | ✗ | return AVERROR(ENOMEM); | |
1039 | } | ||
1040 | |||
1041 |
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187 | if ((ret = ff_cavs_init_pic(h)) < 0) |
1042 | ✗ | return ret; | |
1043 | 187 | h->cur.poc = get_bits(&h->gb, 8) * 2; | |
1044 | |||
1045 | /* get temporal distances and MV scaling factors */ | ||
1046 |
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187 | if (h->cur.f->pict_type != AV_PICTURE_TYPE_B) { |
1047 | 66 | h->dist[0] = (h->cur.poc - h->DPB[0].poc) & 511; | |
1048 | } else { | ||
1049 | 121 | h->dist[0] = (h->DPB[0].poc - h->cur.poc) & 511; | |
1050 | } | ||
1051 | 187 | h->dist[1] = (h->cur.poc - h->DPB[1].poc) & 511; | |
1052 |
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187 | h->scale_den[0] = h->dist[0] ? 512/h->dist[0] : 0; |
1053 |
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187 | h->scale_den[1] = h->dist[1] ? 512/h->dist[1] : 0; |
1054 |
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187 | if (h->cur.f->pict_type == AV_PICTURE_TYPE_B) { |
1055 | 121 | h->sym_factor = h->dist[0] * h->scale_den[1]; | |
1056 |
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121 | if (FFABS(h->sym_factor) > 32768) { |
1057 | ✗ | av_log(h->avctx, AV_LOG_ERROR, "sym_factor %d too large\n", h->sym_factor); | |
1058 | ✗ | return AVERROR_INVALIDDATA; | |
1059 | } | ||
1060 | } else { | ||
1061 |
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66 | h->direct_den[0] = h->dist[0] ? 16384 / h->dist[0] : 0; |
1062 |
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66 | h->direct_den[1] = h->dist[1] ? 16384 / h->dist[1] : 0; |
1063 | } | ||
1064 | |||
1065 |
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|
187 | if (h->low_delay) |
1066 | ✗ | get_ue_golomb(&h->gb); //bbv_check_times | |
1067 | 187 | h->progressive = get_bits1(&h->gb); | |
1068 | 187 | h->pic_structure = 1; | |
1069 |
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|
187 | if (!h->progressive) |
1070 | ✗ | h->pic_structure = get_bits1(&h->gb); | |
1071 |
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187 | if (!h->pic_structure && h->stc == PIC_PB_START_CODE) |
1072 | ✗ | skip_bits1(&h->gb); //advanced_pred_mode_disable | |
1073 | 187 | skip_bits1(&h->gb); //top_field_first | |
1074 | 187 | skip_bits1(&h->gb); //repeat_first_field | |
1075 | 187 | h->pic_qp_fixed = | |
1076 | 187 | h->qp_fixed = get_bits1(&h->gb); | |
1077 | 187 | h->qp = get_bits(&h->gb, 6); | |
1078 |
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187 | if (h->cur.f->pict_type == AV_PICTURE_TYPE_I) { |
1079 |
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10 | if (!h->progressive && !h->pic_structure) |
1080 | ✗ | skip_bits1(&h->gb);//what is this? | |
1081 | 10 | skip_bits(&h->gb, 4); //reserved bits | |
1082 | } else { | ||
1083 |
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|
177 | if (!(h->cur.f->pict_type == AV_PICTURE_TYPE_B && h->pic_structure == 1)) |
1084 | 56 | h->ref_flag = get_bits1(&h->gb); | |
1085 | 177 | skip_bits(&h->gb, 4); //reserved bits | |
1086 | 177 | h->skip_mode_flag = get_bits1(&h->gb); | |
1087 | } | ||
1088 | 187 | h->loop_filter_disable = get_bits1(&h->gb); | |
1089 |
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187 | if (!h->loop_filter_disable && get_bits1(&h->gb)) { |
1090 | ✗ | h->alpha_offset = get_se_golomb(&h->gb); | |
1091 | ✗ | h->beta_offset = get_se_golomb(&h->gb); | |
1092 | ✗ | if ( h->alpha_offset < -64 || h->alpha_offset > 64 | |
1093 | ✗ | || h-> beta_offset < -64 || h-> beta_offset > 64) { | |
1094 | ✗ | h->alpha_offset = h->beta_offset = 0; | |
1095 | ✗ | return AVERROR_INVALIDDATA; | |
1096 | } | ||
1097 | } else { | ||
1098 | 187 | h->alpha_offset = h->beta_offset = 0; | |
1099 | } | ||
1100 | |||
1101 | 187 | ret = 0; | |
1102 |
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|
187 | if (h->cur.f->pict_type == AV_PICTURE_TYPE_I) { |
1103 | do { | ||
1104 | 18180 | check_for_slice(h); | |
1105 | 18180 | ret = decode_mb_i(h, 0); | |
1106 |
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18180 | if (ret < 0) |
1107 | ✗ | break; | |
1108 |
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|
18180 | } while (ff_cavs_next_mb(h)); |
1109 |
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|
177 | } else if (h->cur.f->pict_type == AV_PICTURE_TYPE_P) { |
1110 | do { | ||
1111 |
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|
90720 | if (check_for_slice(h)) |
1112 | ✗ | skip_count = -1; | |
1113 |
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90720 | if (h->skip_mode_flag && (skip_count < 0)) { |
1114 |
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|
69924 | if (get_bits_left(&h->gb) < 1) { |
1115 | ✗ | ret = AVERROR_INVALIDDATA; | |
1116 | ✗ | break; | |
1117 | } | ||
1118 | 69924 | skip_count = get_ue_golomb(&h->gb); | |
1119 | } | ||
1120 |
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|
90720 | if (h->skip_mode_flag && skip_count--) { |
1121 | 20801 | decode_mb_p(h, P_SKIP); | |
1122 | } else { | ||
1123 |
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|
69919 | if (get_bits_left(&h->gb) < 1) { |
1124 | ✗ | ret = AVERROR_INVALIDDATA; | |
1125 | ✗ | break; | |
1126 | } | ||
1127 | 69919 | mb_type = get_ue_golomb(&h->gb) + P_SKIP + h->skip_mode_flag; | |
1128 |
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|
69919 | if (mb_type > P_8X8) |
1129 | 7702 | ret = decode_mb_i(h, mb_type - P_8X8 - 1); | |
1130 | else | ||
1131 | 62217 | decode_mb_p(h, mb_type); | |
1132 | } | ||
1133 |
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90720 | if (ret < 0) |
1134 | ✗ | break; | |
1135 |
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90720 | } while (ff_cavs_next_mb(h)); |
1136 | } else { /* AV_PICTURE_TYPE_B */ | ||
1137 | do { | ||
1138 |
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|
195686 | if (check_for_slice(h)) |
1139 | ✗ | skip_count = -1; | |
1140 |
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195686 | if (h->skip_mode_flag && (skip_count < 0)) { |
1141 |
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86746 | if (get_bits_left(&h->gb) < 1) { |
1142 | 1 | ret = AVERROR_INVALIDDATA; | |
1143 | 1 | break; | |
1144 | } | ||
1145 | 86745 | skip_count = get_ue_golomb(&h->gb); | |
1146 | } | ||
1147 |
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|
195685 | if (h->skip_mode_flag && skip_count--) { |
1148 | 108977 | ret = decode_mb_b(h, B_SKIP); | |
1149 | } else { | ||
1150 |
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|
86708 | if (get_bits_left(&h->gb) < 1) { |
1151 | ✗ | ret = AVERROR_INVALIDDATA; | |
1152 | ✗ | break; | |
1153 | } | ||
1154 | 86708 | mb_type = get_ue_golomb(&h->gb) + B_SKIP + h->skip_mode_flag; | |
1155 |
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86708 | if (mb_type > B_8X8) |
1156 | 3566 | ret = decode_mb_i(h, mb_type - B_8X8 - 1); | |
1157 | else | ||
1158 | 83142 | ret = decode_mb_b(h, mb_type); | |
1159 | } | ||
1160 |
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195685 | if (ret < 0) |
1161 | ✗ | break; | |
1162 |
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195685 | } while (ff_cavs_next_mb(h)); |
1163 | } | ||
1164 | 187 | emms_c(); | |
1165 |
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187 | if (ret >= 0 && h->cur.f->pict_type != AV_PICTURE_TYPE_B) { |
1166 | 66 | av_frame_unref(h->DPB[1].f); | |
1167 | 66 | FFSWAP(AVSFrame, h->cur, h->DPB[1]); | |
1168 | 66 | FFSWAP(AVSFrame, h->DPB[0], h->DPB[1]); | |
1169 | } | ||
1170 | 187 | return ret; | |
1171 | } | ||
1172 | |||
1173 | /***************************************************************************** | ||
1174 | * | ||
1175 | * headers and interface | ||
1176 | * | ||
1177 | ****************************************************************************/ | ||
1178 | |||
1179 | 10 | static int decode_seq_header(AVSContext *h) | |
1180 | { | ||
1181 | int frame_rate_code; | ||
1182 | int width, height; | ||
1183 | int ret; | ||
1184 | |||
1185 | 10 | h->profile = get_bits(&h->gb, 8); | |
1186 |
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10 | if (h->profile != 0x20) { |
1187 | ✗ | avpriv_report_missing_feature(h->avctx, | |
1188 | "only support JiZhun profile"); | ||
1189 | ✗ | return AVERROR_PATCHWELCOME; | |
1190 | } | ||
1191 | 10 | h->level = get_bits(&h->gb, 8); | |
1192 | 10 | skip_bits1(&h->gb); //progressive sequence | |
1193 | |||
1194 | 10 | width = get_bits(&h->gb, 14); | |
1195 | 10 | height = get_bits(&h->gb, 14); | |
1196 |
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10 | if ((h->width || h->height) && (h->width != width || h->height != height)) { |
1197 | ✗ | avpriv_report_missing_feature(h->avctx, | |
1198 | "Width/height changing in CAVS"); | ||
1199 | ✗ | return AVERROR_PATCHWELCOME; | |
1200 | } | ||
1201 |
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10 | if (width <= 0 || height <= 0) { |
1202 | ✗ | av_log(h->avctx, AV_LOG_ERROR, "Dimensions invalid\n"); | |
1203 | ✗ | return AVERROR_INVALIDDATA; | |
1204 | } | ||
1205 | 10 | skip_bits(&h->gb, 2); //chroma format | |
1206 | 10 | skip_bits(&h->gb, 3); //sample_precision | |
1207 | 10 | h->aspect_ratio = get_bits(&h->gb, 4); | |
1208 | 10 | frame_rate_code = get_bits(&h->gb, 4); | |
1209 |
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10 | if (frame_rate_code == 0 || frame_rate_code > 13) { |
1210 | ✗ | av_log(h->avctx, AV_LOG_WARNING, | |
1211 | "frame_rate_code %d is invalid\n", frame_rate_code); | ||
1212 | ✗ | frame_rate_code = 1; | |
1213 | } | ||
1214 | |||
1215 | 10 | skip_bits(&h->gb, 18); //bit_rate_lower | |
1216 | 10 | skip_bits1(&h->gb); //marker_bit | |
1217 | 10 | skip_bits(&h->gb, 12); //bit_rate_upper | |
1218 | 10 | h->low_delay = get_bits1(&h->gb); | |
1219 | |||
1220 | 10 | ret = ff_set_dimensions(h->avctx, width, height); | |
1221 |
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10 | if (ret < 0) |
1222 | ✗ | return ret; | |
1223 | |||
1224 | 10 | h->width = width; | |
1225 | 10 | h->height = height; | |
1226 | 10 | h->mb_width = (h->width + 15) >> 4; | |
1227 | 10 | h->mb_height = (h->height + 15) >> 4; | |
1228 | 10 | h->avctx->framerate = ff_mpeg12_frame_rate_tab[frame_rate_code]; | |
1229 |
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10 | if (!h->top_qp) |
1230 | 5 | return ff_cavs_init_top_lines(h); | |
1231 | 5 | return 0; | |
1232 | } | ||
1233 | |||
1234 | ✗ | static av_cold void cavs_flush(AVCodecContext * avctx) | |
1235 | { | ||
1236 | ✗ | AVSContext *h = avctx->priv_data; | |
1237 | ✗ | h->got_keyframe = 0; | |
1238 | ✗ | } | |
1239 | |||
1240 | 189 | static int cavs_decode_frame(AVCodecContext *avctx, AVFrame *rframe, | |
1241 | int *got_frame, AVPacket *avpkt) | ||
1242 | { | ||
1243 | 189 | AVSContext *h = avctx->priv_data; | |
1244 | 189 | const uint8_t *buf = avpkt->data; | |
1245 | 189 | int buf_size = avpkt->size; | |
1246 | 189 | uint32_t stc = -1; | |
1247 | int input_size, ret; | ||
1248 | const uint8_t *buf_end; | ||
1249 | const uint8_t *buf_ptr; | ||
1250 | 189 | int frame_start = 0; | |
1251 | |||
1252 |
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189 | if (buf_size == 0) { |
1253 |
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2 | if (!h->low_delay && h->DPB[0].f->data[0]) { |
1254 | 1 | *got_frame = 1; | |
1255 | 1 | av_frame_move_ref(rframe, h->DPB[0].f); | |
1256 | } | ||
1257 | 2 | return 0; | |
1258 | } | ||
1259 | |||
1260 | 187 | h->stc = 0; | |
1261 | |||
1262 | 187 | buf_ptr = buf; | |
1263 | 187 | buf_end = buf + buf_size; | |
1264 | for(;;) { | ||
1265 | 393 | buf_ptr = avpriv_find_start_code(buf_ptr, buf_end, &stc); | |
1266 |
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393 | if ((stc & 0xFFFFFE00) || buf_ptr == buf_end) { |
1267 |
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187 | if (!h->stc) |
1268 | 1 | av_log(h->avctx, AV_LOG_WARNING, "no frame decoded\n"); | |
1269 | 187 | return FFMAX(0, buf_ptr - buf); | |
1270 | } | ||
1271 | 206 | input_size = (buf_end - buf_ptr) * 8; | |
1272 |
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206 | switch (stc) { |
1273 | 10 | case CAVS_START_CODE: | |
1274 | 10 | init_get_bits(&h->gb, buf_ptr, input_size); | |
1275 | 10 | decode_seq_header(h); | |
1276 | 10 | break; | |
1277 | 10 | case PIC_I_START_CODE: | |
1278 |
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10 | if (!h->got_keyframe) { |
1279 | 5 | av_frame_unref(h->DPB[0].f); | |
1280 | 5 | av_frame_unref(h->DPB[1].f); | |
1281 | 5 | h->got_keyframe = 1; | |
1282 | } | ||
1283 | case PIC_PB_START_CODE: | ||
1284 |
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187 | if (frame_start > 1) |
1285 | ✗ | return AVERROR_INVALIDDATA; | |
1286 | 187 | frame_start ++; | |
1287 |
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187 | if (*got_frame) |
1288 | ✗ | av_frame_unref(rframe); | |
1289 | 187 | *got_frame = 0; | |
1290 |
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187 | if (!h->got_keyframe) |
1291 | ✗ | break; | |
1292 | 187 | init_get_bits(&h->gb, buf_ptr, input_size); | |
1293 | 187 | h->stc = stc; | |
1294 |
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187 | if (decode_pic(h)) |
1295 | 1 | break; | |
1296 | 186 | *got_frame = 1; | |
1297 |
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186 | if (h->cur.f->pict_type != AV_PICTURE_TYPE_B) { |
1298 |
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66 | if (h->DPB[!h->low_delay].f->data[0]) { |
1299 |
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61 | if ((ret = av_frame_ref(rframe, h->DPB[!h->low_delay].f)) < 0) |
1300 | ✗ | return ret; | |
1301 | } else { | ||
1302 | 5 | *got_frame = 0; | |
1303 | } | ||
1304 | } else { | ||
1305 | 120 | av_frame_move_ref(rframe, h->cur.f); | |
1306 | } | ||
1307 | 186 | break; | |
1308 | 4 | case EXT_START_CODE: | |
1309 | //mpeg_decode_extension(avctx, buf_ptr, input_size); | ||
1310 | 4 | break; | |
1311 | 4 | case USER_START_CODE: | |
1312 | //mpeg_decode_user_data(avctx, buf_ptr, input_size); | ||
1313 | 4 | break; | |
1314 | 1 | default: | |
1315 |
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1 | if (stc <= SLICE_MAX_START_CODE) { |
1316 | 1 | init_get_bits(&h->gb, buf_ptr, input_size); | |
1317 | 1 | decode_slice_header(h, &h->gb); | |
1318 | } | ||
1319 | 1 | break; | |
1320 | } | ||
1321 | } | ||
1322 | } | ||
1323 | |||
1324 | const FFCodec ff_cavs_decoder = { | ||
1325 | .p.name = "cavs", | ||
1326 | CODEC_LONG_NAME("Chinese AVS (Audio Video Standard) (AVS1-P2, JiZhun profile)"), | ||
1327 | .p.type = AVMEDIA_TYPE_VIDEO, | ||
1328 | .p.id = AV_CODEC_ID_CAVS, | ||
1329 | .priv_data_size = sizeof(AVSContext), | ||
1330 | .init = ff_cavs_init, | ||
1331 | .close = ff_cavs_end, | ||
1332 | FF_CODEC_DECODE_CB(cavs_decode_frame), | ||
1333 | .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY, | ||
1334 | .flush = cavs_flush, | ||
1335 | .caps_internal = FF_CODEC_CAP_INIT_CLEANUP, | ||
1336 | }; | ||
1337 |