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1 | /* | ||
2 | * Chinese AVS video (AVS1-P2, JiZhun profile) decoder. | ||
3 | * Copyright (c) 2006 Stefan Gehrer <stefan.gehrer@gmx.de> | ||
4 | * | ||
5 | * This file is part of FFmpeg. | ||
6 | * | ||
7 | * FFmpeg is free software; you can redistribute it and/or | ||
8 | * modify it under the terms of the GNU Lesser General Public | ||
9 | * License as published by the Free Software Foundation; either | ||
10 | * version 2.1 of the License, or (at your option) any later version. | ||
11 | * | ||
12 | * FFmpeg is distributed in the hope that it will be useful, | ||
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
15 | * Lesser General Public License for more details. | ||
16 | * | ||
17 | * You should have received a copy of the GNU Lesser General Public | ||
18 | * License along with FFmpeg; if not, write to the Free Software | ||
19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
20 | */ | ||
21 | |||
22 | /** | ||
23 | * @file | ||
24 | * Chinese AVS video (AVS1-P2, JiZhun profile) decoder | ||
25 | * @author Stefan Gehrer <stefan.gehrer@gmx.de> | ||
26 | */ | ||
27 | |||
28 | #include "libavutil/avassert.h" | ||
29 | #include "libavutil/emms.h" | ||
30 | #include "avcodec.h" | ||
31 | #include "get_bits.h" | ||
32 | #include "golomb.h" | ||
33 | #include "cavs.h" | ||
34 | #include "codec_internal.h" | ||
35 | #include "decode.h" | ||
36 | #include "mathops.h" | ||
37 | #include "mpeg12data.h" | ||
38 | #include "startcode.h" | ||
39 | |||
40 | static const uint8_t mv_scan[4] = { | ||
41 | MV_FWD_X0, MV_FWD_X1, | ||
42 | MV_FWD_X2, MV_FWD_X3 | ||
43 | }; | ||
44 | |||
45 | static const uint8_t cbp_tab[64][2] = { | ||
46 | { 63, 0 }, { 15, 15 }, { 31, 63 }, { 47, 31 }, { 0, 16 }, { 14, 32 }, { 13, 47 }, { 11, 13 }, | ||
47 | { 7, 14 }, { 5, 11 }, { 10, 12 }, { 8, 5 }, { 12, 10 }, { 61, 7 }, { 4, 48 }, { 55, 3 }, | ||
48 | { 1, 2 }, { 2, 8 }, { 59, 4 }, { 3, 1 }, { 62, 61 }, { 9, 55 }, { 6, 59 }, { 29, 62 }, | ||
49 | { 45, 29 }, { 51, 27 }, { 23, 23 }, { 39, 19 }, { 27, 30 }, { 46, 28 }, { 53, 9 }, { 30, 6 }, | ||
50 | { 43, 60 }, { 37, 21 }, { 60, 44 }, { 16, 26 }, { 21, 51 }, { 28, 35 }, { 19, 18 }, { 35, 20 }, | ||
51 | { 42, 24 }, { 26, 53 }, { 44, 17 }, { 32, 37 }, { 58, 39 }, { 24, 45 }, { 20, 58 }, { 17, 43 }, | ||
52 | { 18, 42 }, { 48, 46 }, { 22, 36 }, { 33, 33 }, { 25, 34 }, { 49, 40 }, { 40, 52 }, { 36, 49 }, | ||
53 | { 34, 50 }, { 50, 56 }, { 52, 25 }, { 54, 22 }, { 41, 54 }, { 56, 57 }, { 38, 41 }, { 57, 38 } | ||
54 | }; | ||
55 | |||
56 | static const uint8_t scan3x3[4] = { 4, 5, 7, 8 }; | ||
57 | |||
58 | static const uint8_t dequant_shift[64] = { | ||
59 | 14, 14, 14, 14, 14, 14, 14, 14, | ||
60 | 13, 13, 13, 13, 13, 13, 13, 13, | ||
61 | 13, 12, 12, 12, 12, 12, 12, 12, | ||
62 | 11, 11, 11, 11, 11, 11, 11, 11, | ||
63 | 11, 10, 10, 10, 10, 10, 10, 10, | ||
64 | 10, 9, 9, 9, 9, 9, 9, 9, | ||
65 | 9, 8, 8, 8, 8, 8, 8, 8, | ||
66 | 7, 7, 7, 7, 7, 7, 7, 7 | ||
67 | }; | ||
68 | |||
69 | static const uint16_t dequant_mul[64] = { | ||
70 | 32768, 36061, 38968, 42495, 46341, 50535, 55437, 60424, | ||
71 | 32932, 35734, 38968, 42495, 46177, 50535, 55109, 59933, | ||
72 | 65535, 35734, 38968, 42577, 46341, 50617, 55027, 60097, | ||
73 | 32809, 35734, 38968, 42454, 46382, 50576, 55109, 60056, | ||
74 | 65535, 35734, 38968, 42495, 46320, 50515, 55109, 60076, | ||
75 | 65535, 35744, 38968, 42495, 46341, 50535, 55099, 60087, | ||
76 | 65535, 35734, 38973, 42500, 46341, 50535, 55109, 60097, | ||
77 | 32771, 35734, 38965, 42497, 46341, 50535, 55109, 60099 | ||
78 | }; | ||
79 | |||
80 | #define EOB 0, 0, 0 | ||
81 | |||
82 | static const struct dec_2dvlc intra_dec[7] = { | ||
83 | { | ||
84 | { //level / run / table_inc | ||
85 | { 1, 1, 1 }, { -1, 1, 1 }, { 1, 2, 1 }, { -1, 2, 1 }, { 1, 3, 1 }, { -1, 3, 1 }, | ||
86 | { 1, 4, 1 }, { -1, 4, 1 }, { 1, 5, 1 }, { -1, 5, 1 }, { 1, 6, 1 }, { -1, 6, 1 }, | ||
87 | { 1, 7, 1 }, { -1, 7, 1 }, { 1, 8, 1 }, { -1, 8, 1 }, { 1, 9, 1 }, { -1, 9, 1 }, | ||
88 | { 1, 10, 1 }, { -1, 10, 1 }, { 1, 11, 1 }, { -1, 11, 1 }, { 2, 1, 2 }, { -2, 1, 2 }, | ||
89 | { 1, 12, 1 }, { -1, 12, 1 }, { 1, 13, 1 }, { -1, 13, 1 }, { 1, 14, 1 }, { -1, 14, 1 }, | ||
90 | { 1, 15, 1 }, { -1, 15, 1 }, { 2, 2, 2 }, { -2, 2, 2 }, { 1, 16, 1 }, { -1, 16, 1 }, | ||
91 | { 1, 17, 1 }, { -1, 17, 1 }, { 3, 1, 3 }, { -3, 1, 3 }, { 1, 18, 1 }, { -1, 18, 1 }, | ||
92 | { 1, 19, 1 }, { -1, 19, 1 }, { 2, 3, 2 }, { -2, 3, 2 }, { 1, 20, 1 }, { -1, 20, 1 }, | ||
93 | { 1, 21, 1 }, { -1, 21, 1 }, { 2, 4, 2 }, { -2, 4, 2 }, { 1, 22, 1 }, { -1, 22, 1 }, | ||
94 | { 2, 5, 2 }, { -2, 5, 2 }, { 1, 23, 1 }, { -1, 23, 1 }, { EOB } | ||
95 | }, | ||
96 | //level_add | ||
97 | { 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 }, | ||
98 | 2, //golomb_order | ||
99 | 0, //inc_limit | ||
100 | 23, //max_run | ||
101 | }, | ||
102 | { | ||
103 | { //level / run | ||
104 | { 1, 1, 0 }, { -1, 1, 0 }, { 1, 2, 0 }, { -1, 2, 0 }, { 2, 1, 1 }, { -2, 1, 1 }, | ||
105 | { 1, 3, 0 }, { -1, 3, 0 }, { EOB }, { 1, 4, 0 }, { -1, 4, 0 }, { 1, 5, 0 }, | ||
106 | { -1, 5, 0 }, { 1, 6, 0 }, { -1, 6, 0 }, { 3, 1, 2 }, { -3, 1, 2 }, { 2, 2, 1 }, | ||
107 | { -2, 2, 1 }, { 1, 7, 0 }, { -1, 7, 0 }, { 1, 8, 0 }, { -1, 8, 0 }, { 1, 9, 0 }, | ||
108 | { -1, 9, 0 }, { 2, 3, 1 }, { -2, 3, 1 }, { 4, 1, 2 }, { -4, 1, 2 }, { 1, 10, 0 }, | ||
109 | { -1, 10, 0 }, { 1, 11, 0 }, { -1, 11, 0 }, { 2, 4, 1 }, { -2, 4, 1 }, { 3, 2, 2 }, | ||
110 | { -3, 2, 2 }, { 1, 12, 0 }, { -1, 12, 0 }, { 2, 5, 1 }, { -2, 5, 1 }, { 5, 1, 3 }, | ||
111 | { -5, 1, 3 }, { 1, 13, 0 }, { -1, 13, 0 }, { 2, 6, 1 }, { -2, 6, 1 }, { 1, 14, 0 }, | ||
112 | { -1, 14, 0 }, { 2, 7, 1 }, { -2, 7, 1 }, { 2, 8, 1 }, { -2, 8, 1 }, { 3, 3, 2 }, | ||
113 | { -3, 3, 2 }, { 6, 1, 3 }, { -6, 1, 3 }, { 1, 15, 0 }, { -1, 15, 0 } | ||
114 | }, | ||
115 | //level_add | ||
116 | { 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 }, | ||
117 | 2, //golomb_order | ||
118 | 1, //inc_limit | ||
119 | 15, //max_run | ||
120 | }, | ||
121 | { | ||
122 | { //level / run | ||
123 | { 1, 1, 0 }, { -1, 1, 0 }, { 2, 1, 0 }, { -2, 1, 0 }, { 1, 2, 0 }, { -1, 2, 0 }, | ||
124 | { 3, 1, 1 }, { -3, 1, 1 }, { EOB }, { 1, 3, 0 }, { -1, 3, 0 }, { 2, 2, 0 }, | ||
125 | { -2, 2, 0 }, { 4, 1, 1 }, { -4, 1, 1 }, { 1, 4, 0 }, { -1, 4, 0 }, { 5, 1, 2 }, | ||
126 | { -5, 1, 2 }, { 1, 5, 0 }, { -1, 5, 0 }, { 3, 2, 1 }, { -3, 2, 1 }, { 2, 3, 0 }, | ||
127 | { -2, 3, 0 }, { 1, 6, 0 }, { -1, 6, 0 }, { 6, 1, 2 }, { -6, 1, 2 }, { 2, 4, 0 }, | ||
128 | { -2, 4, 0 }, { 1, 7, 0 }, { -1, 7, 0 }, { 4, 2, 1 }, { -4, 2, 1 }, { 7, 1, 2 }, | ||
129 | { -7, 1, 2 }, { 3, 3, 1 }, { -3, 3, 1 }, { 2, 5, 0 }, { -2, 5, 0 }, { 1, 8, 0 }, | ||
130 | { -1, 8, 0 }, { 2, 6, 0 }, { -2, 6, 0 }, { 8, 1, 3 }, { -8, 1, 3 }, { 1, 9, 0 }, | ||
131 | { -1, 9, 0 }, { 5, 2, 2 }, { -5, 2, 2 }, { 3, 4, 1 }, { -3, 4, 1 }, { 2, 7, 0 }, | ||
132 | { -2, 7, 0 }, { 9, 1, 3 }, { -9, 1, 3 }, { 1, 10, 0 }, { -1, 10, 0 } | ||
133 | }, | ||
134 | //level_add | ||
135 | { 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 }, | ||
136 | 2, //golomb_order | ||
137 | 2, //inc_limit | ||
138 | 10, //max_run | ||
139 | }, | ||
140 | { | ||
141 | { //level / run | ||
142 | { 1, 1, 0 }, { -1, 1, 0 }, { 2, 1, 0 }, { -2, 1, 0 }, { 3, 1, 0 }, { -3, 1, 0 }, | ||
143 | { 1, 2, 0 }, { -1, 2, 0 }, { EOB }, { 4, 1, 0 }, { -4, 1, 0 }, { 5, 1, 1 }, | ||
144 | { -5, 1, 1 }, { 2, 2, 0 }, { -2, 2, 0 }, { 1, 3, 0 }, { -1, 3, 0 }, { 6, 1, 1 }, | ||
145 | { -6, 1, 1 }, { 3, 2, 0 }, { -3, 2, 0 }, { 7, 1, 1 }, { -7, 1, 1 }, { 1, 4, 0 }, | ||
146 | { -1, 4, 0 }, { 8, 1, 2 }, { -8, 1, 2 }, { 2, 3, 0 }, { -2, 3, 0 }, { 4, 2, 0 }, | ||
147 | { -4, 2, 0 }, { 1, 5, 0 }, { -1, 5, 0 }, { 9, 1, 2 }, { -9, 1, 2 }, { 5, 2, 1 }, | ||
148 | { -5, 2, 1 }, { 2, 4, 0 }, { -2, 4, 0 }, { 10, 1, 2 }, {-10, 1, 2 }, { 3, 3, 0 }, | ||
149 | { -3, 3, 0 }, { 1, 6, 0 }, { -1, 6, 0 }, { 11, 1, 3 }, {-11, 1, 3 }, { 6, 2, 1 }, | ||
150 | { -6, 2, 1 }, { 1, 7, 0 }, { -1, 7, 0 }, { 2, 5, 0 }, { -2, 5, 0 }, { 3, 4, 0 }, | ||
151 | { -3, 4, 0 }, { 12, 1, 3 }, {-12, 1, 3 }, { 4, 3, 0 }, { -4, 3, 0 } | ||
152 | }, | ||
153 | //level_add | ||
154 | { 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 }, | ||
155 | 2, //golomb_order | ||
156 | 4, //inc_limit | ||
157 | 7, //max_run | ||
158 | }, | ||
159 | { | ||
160 | { //level / run | ||
161 | { 1, 1, 0 }, { -1, 1, 0 }, { 2, 1, 0 }, { -2, 1, 0 }, { 3, 1, 0 }, { -3, 1, 0 }, | ||
162 | { EOB }, { 4, 1, 0 }, { -4, 1, 0 }, { 5, 1, 0 }, { -5, 1, 0 }, { 6, 1, 0 }, | ||
163 | { -6, 1, 0 }, { 1, 2, 0 }, { -1, 2, 0 }, { 7, 1, 0 }, { -7, 1, 0 }, { 8, 1, 1 }, | ||
164 | { -8, 1, 1 }, { 2, 2, 0 }, { -2, 2, 0 }, { 9, 1, 1 }, { -9, 1, 1 }, { 10, 1, 1 }, | ||
165 | {-10, 1, 1 }, { 1, 3, 0 }, { -1, 3, 0 }, { 3, 2, 0 }, { -3, 2, 0 }, { 11, 1, 2 }, | ||
166 | {-11, 1, 2 }, { 4, 2, 0 }, { -4, 2, 0 }, { 12, 1, 2 }, {-12, 1, 2 }, { 13, 1, 2 }, | ||
167 | {-13, 1, 2 }, { 5, 2, 0 }, { -5, 2, 0 }, { 1, 4, 0 }, { -1, 4, 0 }, { 2, 3, 0 }, | ||
168 | { -2, 3, 0 }, { 14, 1, 2 }, {-14, 1, 2 }, { 6, 2, 0 }, { -6, 2, 0 }, { 15, 1, 2 }, | ||
169 | {-15, 1, 2 }, { 16, 1, 2 }, {-16, 1, 2 }, { 3, 3, 0 }, { -3, 3, 0 }, { 1, 5, 0 }, | ||
170 | { -1, 5, 0 }, { 7, 2, 0 }, { -7, 2, 0 }, { 17, 1, 2 }, {-17, 1, 2 } | ||
171 | }, | ||
172 | //level_add | ||
173 | { 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 }, | ||
174 | 2, //golomb_order | ||
175 | 7, //inc_limit | ||
176 | 5, //max_run | ||
177 | }, | ||
178 | { | ||
179 | { //level / run | ||
180 | { EOB }, { 1, 1, 0 }, { -1, 1, 0 }, { 2, 1, 0 }, { -2, 1, 0 }, { 3, 1, 0 }, | ||
181 | { -3, 1, 0 }, { 4, 1, 0 }, { -4, 1, 0 }, { 5, 1, 0 }, { -5, 1, 0 }, { 6, 1, 0 }, | ||
182 | { -6, 1, 0 }, { 7, 1, 0 }, { -7, 1, 0 }, { 8, 1, 0 }, { -8, 1, 0 }, { 9, 1, 0 }, | ||
183 | { -9, 1, 0 }, { 10, 1, 0 }, {-10, 1, 0 }, { 1, 2, 0 }, { -1, 2, 0 }, { 11, 1, 1 }, | ||
184 | {-11, 1, 1 }, { 12, 1, 1 }, {-12, 1, 1 }, { 13, 1, 1 }, {-13, 1, 1 }, { 2, 2, 0 }, | ||
185 | { -2, 2, 0 }, { 14, 1, 1 }, {-14, 1, 1 }, { 15, 1, 1 }, {-15, 1, 1 }, { 3, 2, 0 }, | ||
186 | { -3, 2, 0 }, { 16, 1, 1 }, {-16, 1, 1 }, { 1, 3, 0 }, { -1, 3, 0 }, { 17, 1, 1 }, | ||
187 | {-17, 1, 1 }, { 4, 2, 0 }, { -4, 2, 0 }, { 18, 1, 1 }, {-18, 1, 1 }, { 5, 2, 0 }, | ||
188 | { -5, 2, 0 }, { 19, 1, 1 }, {-19, 1, 1 }, { 20, 1, 1 }, {-20, 1, 1 }, { 6, 2, 0 }, | ||
189 | { -6, 2, 0 }, { 21, 1, 1 }, {-21, 1, 1 }, { 2, 3, 0 }, { -2, 3, 0 } | ||
190 | }, | ||
191 | //level_add | ||
192 | { 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 }, | ||
193 | 2, //golomb_order | ||
194 | 10, //inc_limit | ||
195 | 3, //max_run | ||
196 | }, | ||
197 | { | ||
198 | { //level / run | ||
199 | { EOB }, { 1, 1, 0 }, { -1, 1, 0 }, { 2, 1, 0 }, { -2, 1, 0 }, { 3, 1, 0 }, | ||
200 | { -3, 1, 0 }, { 4, 1, 0 }, { -4, 1, 0 }, { 5, 1, 0 }, { -5, 1, 0 }, { 6, 1, 0 }, | ||
201 | { -6, 1, 0 }, { 7, 1, 0 }, { -7, 1, 0 }, { 8, 1, 0 }, { -8, 1, 0 }, { 9, 1, 0 }, | ||
202 | { -9, 1, 0 }, { 10, 1, 0 }, {-10, 1, 0 }, { 11, 1, 0 }, {-11, 1, 0 }, { 12, 1, 0 }, | ||
203 | {-12, 1, 0 }, { 13, 1, 0 }, {-13, 1, 0 }, { 14, 1, 0 }, {-14, 1, 0 }, { 15, 1, 0 }, | ||
204 | {-15, 1, 0 }, { 16, 1, 0 }, {-16, 1, 0 }, { 1, 2, 0 }, { -1, 2, 0 }, { 17, 1, 0 }, | ||
205 | {-17, 1, 0 }, { 18, 1, 0 }, {-18, 1, 0 }, { 19, 1, 0 }, {-19, 1, 0 }, { 20, 1, 0 }, | ||
206 | {-20, 1, 0 }, { 21, 1, 0 }, {-21, 1, 0 }, { 2, 2, 0 }, { -2, 2, 0 }, { 22, 1, 0 }, | ||
207 | {-22, 1, 0 }, { 23, 1, 0 }, {-23, 1, 0 }, { 24, 1, 0 }, {-24, 1, 0 }, { 25, 1, 0 }, | ||
208 | {-25, 1, 0 }, { 3, 2, 0 }, { -3, 2, 0 }, { 26, 1, 0 }, {-26, 1, 0 } | ||
209 | }, | ||
210 | //level_add | ||
211 | { 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 }, | ||
212 | 2, //golomb_order | ||
213 | INT_MAX, //inc_limit | ||
214 | 2, //max_run | ||
215 | } | ||
216 | }; | ||
217 | |||
218 | static const struct dec_2dvlc inter_dec[7] = { | ||
219 | { | ||
220 | { //level / run | ||
221 | { 1, 1, 1 }, { -1, 1, 1 }, { 1, 2, 1 }, { -1, 2, 1 }, { 1, 3, 1 }, { -1, 3, 1 }, | ||
222 | { 1, 4, 1 }, { -1, 4, 1 }, { 1, 5, 1 }, { -1, 5, 1 }, { 1, 6, 1 }, { -1, 6, 1 }, | ||
223 | { 1, 7, 1 }, { -1, 7, 1 }, { 1, 8, 1 }, { -1, 8, 1 }, { 1, 9, 1 }, { -1, 9, 1 }, | ||
224 | { 1, 10, 1 }, { -1, 10, 1 }, { 1, 11, 1 }, { -1, 11, 1 }, { 1, 12, 1 }, { -1, 12, 1 }, | ||
225 | { 1, 13, 1 }, { -1, 13, 1 }, { 2, 1, 2 }, { -2, 1, 2 }, { 1, 14, 1 }, { -1, 14, 1 }, | ||
226 | { 1, 15, 1 }, { -1, 15, 1 }, { 1, 16, 1 }, { -1, 16, 1 }, { 1, 17, 1 }, { -1, 17, 1 }, | ||
227 | { 1, 18, 1 }, { -1, 18, 1 }, { 1, 19, 1 }, { -1, 19, 1 }, { 3, 1, 3 }, { -3, 1, 3 }, | ||
228 | { 1, 20, 1 }, { -1, 20, 1 }, { 1, 21, 1 }, { -1, 21, 1 }, { 2, 2, 2 }, { -2, 2, 2 }, | ||
229 | { 1, 22, 1 }, { -1, 22, 1 }, { 1, 23, 1 }, { -1, 23, 1 }, { 1, 24, 1 }, { -1, 24, 1 }, | ||
230 | { 1, 25, 1 }, { -1, 25, 1 }, { 1, 26, 1 }, { -1, 26, 1 }, { EOB } | ||
231 | }, | ||
232 | //level_add | ||
233 | { 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 }, | ||
234 | 3, //golomb_order | ||
235 | 0, //inc_limit | ||
236 | 26 //max_run | ||
237 | }, | ||
238 | { | ||
239 | { //level / run | ||
240 | { 1, 1, 0 }, { -1, 1, 0 }, { EOB }, { 1, 2, 0 }, { -1, 2, 0 }, { 1, 3, 0 }, | ||
241 | { -1, 3, 0 }, { 1, 4, 0 }, { -1, 4, 0 }, { 1, 5, 0 }, { -1, 5, 0 }, { 1, 6, 0 }, | ||
242 | { -1, 6, 0 }, { 2, 1, 1 }, { -2, 1, 1 }, { 1, 7, 0 }, { -1, 7, 0 }, { 1, 8, 0 }, | ||
243 | { -1, 8, 0 }, { 1, 9, 0 }, { -1, 9, 0 }, { 1, 10, 0 }, { -1, 10, 0 }, { 2, 2, 1 }, | ||
244 | { -2, 2, 1 }, { 1, 11, 0 }, { -1, 11, 0 }, { 1, 12, 0 }, { -1, 12, 0 }, { 3, 1, 2 }, | ||
245 | { -3, 1, 2 }, { 1, 13, 0 }, { -1, 13, 0 }, { 1, 14, 0 }, { -1, 14, 0 }, { 2, 3, 1 }, | ||
246 | { -2, 3, 1 }, { 1, 15, 0 }, { -1, 15, 0 }, { 2, 4, 1 }, { -2, 4, 1 }, { 1, 16, 0 }, | ||
247 | { -1, 16, 0 }, { 2, 5, 1 }, { -2, 5, 1 }, { 1, 17, 0 }, { -1, 17, 0 }, { 4, 1, 3 }, | ||
248 | { -4, 1, 3 }, { 2, 6, 1 }, { -2, 6, 1 }, { 1, 18, 0 }, { -1, 18, 0 }, { 1, 19, 0 }, | ||
249 | { -1, 19, 0 }, { 2, 7, 1 }, { -2, 7, 1 }, { 3, 2, 2 }, { -3, 2, 2 } | ||
250 | }, | ||
251 | //level_add | ||
252 | { 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 }, | ||
253 | 2, //golomb_order | ||
254 | 1, //inc_limit | ||
255 | 19 //max_run | ||
256 | }, | ||
257 | { | ||
258 | { //level / run | ||
259 | { 1, 1, 0 }, { -1, 1, 0 }, { EOB }, { 1, 2, 0 }, { -1, 2, 0 }, { 2, 1, 0 }, | ||
260 | { -2, 1, 0 }, { 1, 3, 0 }, { -1, 3, 0 }, { 1, 4, 0 }, { -1, 4, 0 }, { 3, 1, 1 }, | ||
261 | { -3, 1, 1 }, { 2, 2, 0 }, { -2, 2, 0 }, { 1, 5, 0 }, { -1, 5, 0 }, { 1, 6, 0 }, | ||
262 | { -1, 6, 0 }, { 1, 7, 0 }, { -1, 7, 0 }, { 2, 3, 0 }, { -2, 3, 0 }, { 4, 1, 2 }, | ||
263 | { -4, 1, 2 }, { 1, 8, 0 }, { -1, 8, 0 }, { 3, 2, 1 }, { -3, 2, 1 }, { 2, 4, 0 }, | ||
264 | { -2, 4, 0 }, { 1, 9, 0 }, { -1, 9, 0 }, { 1, 10, 0 }, { -1, 10, 0 }, { 5, 1, 2 }, | ||
265 | { -5, 1, 2 }, { 2, 5, 0 }, { -2, 5, 0 }, { 1, 11, 0 }, { -1, 11, 0 }, { 2, 6, 0 }, | ||
266 | { -2, 6, 0 }, { 1, 12, 0 }, { -1, 12, 0 }, { 3, 3, 1 }, { -3, 3, 1 }, { 6, 1, 2 }, | ||
267 | { -6, 1, 2 }, { 4, 2, 2 }, { -4, 2, 2 }, { 1, 13, 0 }, { -1, 13, 0 }, { 2, 7, 0 }, | ||
268 | { -2, 7, 0 }, { 3, 4, 1 }, { -3, 4, 1 }, { 1, 14, 0 }, { -1, 14, 0 } | ||
269 | }, | ||
270 | //level_add | ||
271 | { 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 }, | ||
272 | 2, //golomb_order | ||
273 | 2, //inc_limit | ||
274 | 14 //max_run | ||
275 | }, | ||
276 | { | ||
277 | { //level / run | ||
278 | { 1, 1, 0 }, { -1, 1, 0 }, { EOB }, { 2, 1, 0 }, { -2, 1, 0 }, { 1, 2, 0 }, | ||
279 | { -1, 2, 0 }, { 3, 1, 0 }, { -3, 1, 0 }, { 1, 3, 0 }, { -1, 3, 0 }, { 2, 2, 0 }, | ||
280 | { -2, 2, 0 }, { 4, 1, 1 }, { -4, 1, 1 }, { 1, 4, 0 }, { -1, 4, 0 }, { 5, 1, 1 }, | ||
281 | { -5, 1, 1 }, { 1, 5, 0 }, { -1, 5, 0 }, { 3, 2, 0 }, { -3, 2, 0 }, { 2, 3, 0 }, | ||
282 | { -2, 3, 0 }, { 1, 6, 0 }, { -1, 6, 0 }, { 6, 1, 1 }, { -6, 1, 1 }, { 2, 4, 0 }, | ||
283 | { -2, 4, 0 }, { 1, 7, 0 }, { -1, 7, 0 }, { 4, 2, 1 }, { -4, 2, 1 }, { 7, 1, 2 }, | ||
284 | { -7, 1, 2 }, { 3, 3, 0 }, { -3, 3, 0 }, { 1, 8, 0 }, { -1, 8, 0 }, { 2, 5, 0 }, | ||
285 | { -2, 5, 0 }, { 8, 1, 2 }, { -8, 1, 2 }, { 1, 9, 0 }, { -1, 9, 0 }, { 3, 4, 0 }, | ||
286 | { -3, 4, 0 }, { 2, 6, 0 }, { -2, 6, 0 }, { 5, 2, 1 }, { -5, 2, 1 }, { 1, 10, 0 }, | ||
287 | { -1, 10, 0 }, { 9, 1, 2 }, { -9, 1, 2 }, { 4, 3, 1 }, { -4, 3, 1 } | ||
288 | }, | ||
289 | //level_add | ||
290 | { 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 }, | ||
291 | 2, //golomb_order | ||
292 | 3, //inc_limit | ||
293 | 10 //max_run | ||
294 | }, | ||
295 | { | ||
296 | { //level / run | ||
297 | { 1, 1, 0 }, { -1, 1, 0 }, { EOB }, { 2, 1, 0 }, { -2, 1, 0 }, { 3, 1, 0 }, | ||
298 | { -3, 1, 0 }, { 1, 2, 0 }, { -1, 2, 0 }, { 4, 1, 0 }, { -4, 1, 0 }, { 5, 1, 0 }, | ||
299 | { -5, 1, 0 }, { 2, 2, 0 }, { -2, 2, 0 }, { 1, 3, 0 }, { -1, 3, 0 }, { 6, 1, 0 }, | ||
300 | { -6, 1, 0 }, { 3, 2, 0 }, { -3, 2, 0 }, { 7, 1, 1 }, { -7, 1, 1 }, { 1, 4, 0 }, | ||
301 | { -1, 4, 0 }, { 8, 1, 1 }, { -8, 1, 1 }, { 2, 3, 0 }, { -2, 3, 0 }, { 4, 2, 0 }, | ||
302 | { -4, 2, 0 }, { 1, 5, 0 }, { -1, 5, 0 }, { 9, 1, 1 }, { -9, 1, 1 }, { 5, 2, 0 }, | ||
303 | { -5, 2, 0 }, { 2, 4, 0 }, { -2, 4, 0 }, { 1, 6, 0 }, { -1, 6, 0 }, { 10, 1, 2 }, | ||
304 | {-10, 1, 2 }, { 3, 3, 0 }, { -3, 3, 0 }, { 11, 1, 2 }, {-11, 1, 2 }, { 1, 7, 0 }, | ||
305 | { -1, 7, 0 }, { 6, 2, 0 }, { -6, 2, 0 }, { 3, 4, 0 }, { -3, 4, 0 }, { 2, 5, 0 }, | ||
306 | { -2, 5, 0 }, { 12, 1, 2 }, {-12, 1, 2 }, { 4, 3, 0 }, { -4, 3, 0 } | ||
307 | }, | ||
308 | //level_add | ||
309 | { 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 }, | ||
310 | 2, //golomb_order | ||
311 | 6, //inc_limit | ||
312 | 7 //max_run | ||
313 | }, | ||
314 | { | ||
315 | { //level / run | ||
316 | { EOB }, { 1, 1, 0 }, { -1, 1, 0 }, { 2, 1, 0 }, { -2, 1, 0 }, { 3, 1, 0 }, | ||
317 | { -3, 1, 0 }, { 4, 1, 0 }, { -4, 1, 0 }, { 5, 1, 0 }, { -5, 1, 0 }, { 1, 2, 0 }, | ||
318 | { -1, 2, 0 }, { 6, 1, 0 }, { -6, 1, 0 }, { 7, 1, 0 }, { -7, 1, 0 }, { 8, 1, 0 }, | ||
319 | { -8, 1, 0 }, { 2, 2, 0 }, { -2, 2, 0 }, { 9, 1, 0 }, { -9, 1, 0 }, { 1, 3, 0 }, | ||
320 | { -1, 3, 0 }, { 10, 1, 1 }, { -10, 1, 1 }, { 3, 2, 0 }, { -3, 2, 0 }, { 11, 1, 1 }, | ||
321 | { -11, 1, 1 }, { 4, 2, 0 }, { -4, 2, 0 }, { 12, 1, 1 }, { -12, 1, 1 }, { 1, 4, 0 }, | ||
322 | { -1, 4, 0 }, { 2, 3, 0 }, { -2, 3, 0 }, { 13, 1, 1 }, { -13, 1, 1 }, { 5, 2, 0 }, | ||
323 | { -5, 2, 0 }, { 14, 1, 1 }, { -14, 1, 1 }, { 6, 2, 0 }, { -6, 2, 0 }, { 1, 5, 0 }, | ||
324 | { -1, 5, 0 }, { 15, 1, 1 }, { -15, 1, 1 }, { 3, 3, 0 }, { -3, 3, 0 }, { 16, 1, 1 }, | ||
325 | { -16, 1, 1 }, { 2, 4, 0 }, { -2, 4, 0 }, { 7, 2, 0 }, { -7, 2, 0 } | ||
326 | }, | ||
327 | //level_add | ||
328 | { 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 }, | ||
329 | 2, //golomb_order | ||
330 | 9, //inc_limit | ||
331 | 5 //max_run | ||
332 | }, | ||
333 | { | ||
334 | { //level / run | ||
335 | { EOB }, { 1, 1, 0 }, { -1, 1, 0 }, { 2, 1, 0 }, { -2, 1, 0 }, { 3, 1, 0 }, | ||
336 | { -3, 1, 0 }, { 4, 1, 0 }, { -4, 1, 0 }, { 5, 1, 0 }, { -5, 1, 0 }, { 6, 1, 0 }, | ||
337 | { -6, 1, 0 }, { 7, 1, 0 }, { -7, 1, 0 }, { 1, 2, 0 }, { -1, 2, 0 }, { 8, 1, 0 }, | ||
338 | { -8, 1, 0 }, { 9, 1, 0 }, { -9, 1, 0 }, { 10, 1, 0 }, { -10, 1, 0 }, { 11, 1, 0 }, | ||
339 | { -11, 1, 0 }, { 12, 1, 0 }, { -12, 1, 0 }, { 2, 2, 0 }, { -2, 2, 0 }, { 13, 1, 0 }, | ||
340 | { -13, 1, 0 }, { 1, 3, 0 }, { -1, 3, 0 }, { 14, 1, 0 }, { -14, 1, 0 }, { 15, 1, 0 }, | ||
341 | { -15, 1, 0 }, { 3, 2, 0 }, { -3, 2, 0 }, { 16, 1, 0 }, { -16, 1, 0 }, { 17, 1, 0 }, | ||
342 | { -17, 1, 0 }, { 18, 1, 0 }, { -18, 1, 0 }, { 4, 2, 0 }, { -4, 2, 0 }, { 19, 1, 0 }, | ||
343 | { -19, 1, 0 }, { 20, 1, 0 }, { -20, 1, 0 }, { 2, 3, 0 }, { -2, 3, 0 }, { 1, 4, 0 }, | ||
344 | { -1, 4, 0 }, { 5, 2, 0 }, { -5, 2, 0 }, { 21, 1, 0 }, { -21, 1, 0 } | ||
345 | }, | ||
346 | //level_add | ||
347 | { 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 }, | ||
348 | 2, //golomb_order | ||
349 | INT_MAX, //inc_limit | ||
350 | 4 //max_run | ||
351 | } | ||
352 | }; | ||
353 | |||
354 | static const struct dec_2dvlc chroma_dec[5] = { | ||
355 | { | ||
356 | { //level / run | ||
357 | { 1, 1, 1 }, { -1, 1, 1 }, { 1, 2, 1 }, { -1, 2, 1 }, { 1, 3, 1 }, { -1, 3, 1 }, | ||
358 | { 1, 4, 1 }, { -1, 4, 1 }, { 1, 5, 1 }, { -1, 5, 1 }, { 1, 6, 1 }, { -1, 6, 1 }, | ||
359 | { 1, 7, 1 }, { -1, 7, 1 }, { 2, 1, 2 }, { -2, 1, 2 }, { 1, 8, 1 }, { -1, 8, 1 }, | ||
360 | { 1, 9, 1 }, { -1, 9, 1 }, { 1, 10, 1 }, { -1, 10, 1 }, { 1, 11, 1 }, { -1, 11, 1 }, | ||
361 | { 1, 12, 1 }, { -1, 12, 1 }, { 1, 13, 1 }, { -1, 13, 1 }, { 1, 14, 1 }, { -1, 14, 1 }, | ||
362 | { 1, 15, 1 }, { -1, 15, 1 }, { 3, 1, 3 }, { -3, 1, 3 }, { 1, 16, 1 }, { -1, 16, 1 }, | ||
363 | { 1, 17, 1 }, { -1, 17, 1 }, { 1, 18, 1 }, { -1, 18, 1 }, { 1, 19, 1 }, { -1, 19, 1 }, | ||
364 | { 1, 20, 1 }, { -1, 20, 1 }, { 1, 21, 1 }, { -1, 21, 1 }, { 1, 22, 1 }, { -1, 22, 1 }, | ||
365 | { 2, 2, 2 }, { -2, 2, 2 }, { 1, 23, 1 }, { -1, 23, 1 }, { 1, 24, 1 }, { -1, 24, 1 }, | ||
366 | { 1, 25, 1 }, { -1, 25, 1 }, { 4, 1, 3 }, { -4, 1, 3 }, { EOB } | ||
367 | }, | ||
368 | //level_add | ||
369 | { 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 }, | ||
370 | 2, //golomb_order | ||
371 | 0, //inc_limit | ||
372 | 25 //max_run | ||
373 | }, | ||
374 | { | ||
375 | { //level / run | ||
376 | { EOB }, { 1, 1, 0 }, { -1, 1, 0 }, { 1, 2, 0 }, { -1, 2, 0 }, { 2, 1, 1 }, | ||
377 | { -2, 1, 1 }, { 1, 3, 0 }, { -1, 3, 0 }, { 1, 4, 0 }, { -1, 4, 0 }, { 1, 5, 0 }, | ||
378 | { -1, 5, 0 }, { 1, 6, 0 }, { -1, 6, 0 }, { 3, 1, 2 }, { -3, 1, 2 }, { 1, 7, 0 }, | ||
379 | { -1, 7, 0 }, { 1, 8, 0 }, { -1, 8, 0 }, { 2, 2, 1 }, { -2, 2, 1 }, { 1, 9, 0 }, | ||
380 | { -1, 9, 0 }, { 1, 10, 0 }, { -1, 10, 0 }, { 1, 11, 0 }, { -1, 11, 0 }, { 4, 1, 2 }, | ||
381 | { -4, 1, 2 }, { 1, 12, 0 }, { -1, 12, 0 }, { 1, 13, 0 }, { -1, 13, 0 }, { 1, 14, 0 }, | ||
382 | { -1, 14, 0 }, { 2, 3, 1 }, { -2, 3, 1 }, { 1, 15, 0 }, { -1, 15, 0 }, { 2, 4, 1 }, | ||
383 | { -2, 4, 1 }, { 5, 1, 3 }, { -5, 1, 3 }, { 3, 2, 2 }, { -3, 2, 2 }, { 1, 16, 0 }, | ||
384 | { -1, 16, 0 }, { 1, 17, 0 }, { -1, 17, 0 }, { 1, 18, 0 }, { -1, 18, 0 }, { 2, 5, 1 }, | ||
385 | { -2, 5, 1 }, { 1, 19, 0 }, { -1, 19, 0 }, { 1, 20, 0 }, { -1, 20, 0 } | ||
386 | }, | ||
387 | //level_add | ||
388 | { 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 }, | ||
389 | 0, //golomb_order | ||
390 | 1, //inc_limit | ||
391 | 20 //max_run | ||
392 | }, | ||
393 | { | ||
394 | { //level / run | ||
395 | { 1, 1, 0 }, { -1, 1, 0 }, { EOB }, { 2, 1, 0 }, { -2, 1, 0 }, { 1, 2, 0 }, | ||
396 | { -1, 2, 0 }, { 3, 1, 1 }, { -3, 1, 1 }, { 1, 3, 0 }, { -1, 3, 0 }, { 4, 1, 1 }, | ||
397 | { -4, 1, 1 }, { 2, 2, 0 }, { -2, 2, 0 }, { 1, 4, 0 }, { -1, 4, 0 }, { 5, 1, 2 }, | ||
398 | { -5, 1, 2 }, { 1, 5, 0 }, { -1, 5, 0 }, { 3, 2, 1 }, { -3, 2, 1 }, { 2, 3, 0 }, | ||
399 | { -2, 3, 0 }, { 1, 6, 0 }, { -1, 6, 0 }, { 6, 1, 2 }, { -6, 1, 2 }, { 1, 7, 0 }, | ||
400 | { -1, 7, 0 }, { 2, 4, 0 }, { -2, 4, 0 }, { 7, 1, 2 }, { -7, 1, 2 }, { 1, 8, 0 }, | ||
401 | { -1, 8, 0 }, { 4, 2, 1 }, { -4, 2, 1 }, { 1, 9, 0 }, { -1, 9, 0 }, { 3, 3, 1 }, | ||
402 | { -3, 3, 1 }, { 2, 5, 0 }, { -2, 5, 0 }, { 2, 6, 0 }, { -2, 6, 0 }, { 8, 1, 2 }, | ||
403 | { -8, 1, 2 }, { 1, 10, 0 }, { -1, 10, 0 }, { 1, 11, 0 }, { -1, 11, 0 }, { 9, 1, 2 }, | ||
404 | { -9, 1, 2 }, { 5, 2, 2 }, { -5, 2, 2 }, { 3, 4, 1 }, { -3, 4, 1 }, | ||
405 | }, | ||
406 | //level_add | ||
407 | { 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 }, | ||
408 | 1, //golomb_order | ||
409 | 2, //inc_limit | ||
410 | 11 //max_run | ||
411 | }, | ||
412 | { | ||
413 | { //level / run | ||
414 | { EOB }, { 1, 1, 0 }, { -1, 1, 0 }, { 2, 1, 0 }, { -2, 1, 0 }, { 3, 1, 0 }, | ||
415 | { -3, 1, 0 }, { 4, 1, 0 }, { -4, 1, 0 }, { 1, 2, 0 }, { -1, 2, 0 }, { 5, 1, 1 }, | ||
416 | { -5, 1, 1 }, { 2, 2, 0 }, { -2, 2, 0 }, { 6, 1, 1 }, { -6, 1, 1 }, { 1, 3, 0 }, | ||
417 | { -1, 3, 0 }, { 7, 1, 1 }, { -7, 1, 1 }, { 3, 2, 0 }, { -3, 2, 0 }, { 8, 1, 1 }, | ||
418 | { -8, 1, 1 }, { 1, 4, 0 }, { -1, 4, 0 }, { 2, 3, 0 }, { -2, 3, 0 }, { 9, 1, 1 }, | ||
419 | { -9, 1, 1 }, { 4, 2, 0 }, { -4, 2, 0 }, { 1, 5, 0 }, { -1, 5, 0 }, { 10, 1, 1 }, | ||
420 | {-10, 1, 1 }, { 3, 3, 0 }, { -3, 3, 0 }, { 5, 2, 1 }, { -5, 2, 1 }, { 2, 4, 0 }, | ||
421 | { -2, 4, 0 }, { 11, 1, 1 }, {-11, 1, 1 }, { 1, 6, 0 }, { -1, 6, 0 }, { 12, 1, 1 }, | ||
422 | {-12, 1, 1 }, { 1, 7, 0 }, { -1, 7, 0 }, { 6, 2, 1 }, { -6, 2, 1 }, { 13, 1, 1 }, | ||
423 | {-13, 1, 1 }, { 2, 5, 0 }, { -2, 5, 0 }, { 1, 8, 0 }, { -1, 8, 0 }, | ||
424 | }, | ||
425 | //level_add | ||
426 | { 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 }, | ||
427 | 1, //golomb_order | ||
428 | 4, //inc_limit | ||
429 | 8 //max_run | ||
430 | }, | ||
431 | { | ||
432 | { //level / run | ||
433 | { EOB }, { 1, 1, 0 }, { -1, 1, 0 }, { 2, 1, 0 }, { -2, 1, 0 }, { 3, 1, 0 }, | ||
434 | { -3, 1, 0 }, { 4, 1, 0 }, { -4, 1, 0 }, { 5, 1, 0 }, { -5, 1, 0 }, { 6, 1, 0 }, | ||
435 | { -6, 1, 0 }, { 7, 1, 0 }, { -7, 1, 0 }, { 8, 1, 0 }, { -8, 1, 0 }, { 1, 2, 0 }, | ||
436 | { -1, 2, 0 }, { 9, 1, 0 }, { -9, 1, 0 }, { 10, 1, 0 }, { -10, 1, 0 }, { 11, 1, 0 }, | ||
437 | { -11, 1, 0 }, { 2, 2, 0 }, { -2, 2, 0 }, { 12, 1, 0 }, { -12, 1, 0 }, { 13, 1, 0 }, | ||
438 | { -13, 1, 0 }, { 3, 2, 0 }, { -3, 2, 0 }, { 14, 1, 0 }, { -14, 1, 0 }, { 1, 3, 0 }, | ||
439 | { -1, 3, 0 }, { 15, 1, 0 }, { -15, 1, 0 }, { 4, 2, 0 }, { -4, 2, 0 }, { 16, 1, 0 }, | ||
440 | { -16, 1, 0 }, { 17, 1, 0 }, { -17, 1, 0 }, { 5, 2, 0 }, { -5, 2, 0 }, { 1, 4, 0 }, | ||
441 | { -1, 4, 0 }, { 2, 3, 0 }, { -2, 3, 0 }, { 18, 1, 0 }, { -18, 1, 0 }, { 6, 2, 0 }, | ||
442 | { -6, 2, 0 }, { 19, 1, 0 }, { -19, 1, 0 }, { 1, 5, 0 }, { -1, 5, 0 }, | ||
443 | }, | ||
444 | //level_add | ||
445 | { 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 }, | ||
446 | 0, //golomb_order | ||
447 | INT_MAX, //inc_limit | ||
448 | 5, //max_run | ||
449 | } | ||
450 | }; | ||
451 | |||
452 | #undef EOB | ||
453 | |||
454 | /***************************************************************************** | ||
455 | * | ||
456 | * motion vector prediction | ||
457 | * | ||
458 | ****************************************************************************/ | ||
459 | |||
460 | 83018 | static inline void store_mvs(AVSContext *h) | |
461 | { | ||
462 | 83018 | h->col_mv[h->mbidx * 4 + 0] = h->mv[MV_FWD_X0]; | |
463 | 83018 | h->col_mv[h->mbidx * 4 + 1] = h->mv[MV_FWD_X1]; | |
464 | 83018 | h->col_mv[h->mbidx * 4 + 2] = h->mv[MV_FWD_X2]; | |
465 | 83018 | h->col_mv[h->mbidx * 4 + 3] = h->mv[MV_FWD_X3]; | |
466 | 83018 | } | |
467 | |||
468 | 526000 | static inline void mv_pred_direct(AVSContext *h, cavs_vector *pmv_fw, | |
469 | cavs_vector *col_mv) | ||
470 | { | ||
471 | 526000 | cavs_vector *pmv_bw = pmv_fw + MV_BWD_OFFS; | |
472 | 526000 | unsigned den = h->direct_den[col_mv->ref]; | |
473 | 526000 | int m = FF_SIGNBIT(col_mv->x); | |
474 | |||
475 | 526000 | pmv_fw->dist = h->dist[1]; | |
476 | 526000 | pmv_bw->dist = h->dist[0]; | |
477 | 526000 | pmv_fw->ref = 1; | |
478 | 526000 | pmv_bw->ref = 0; | |
479 | /* scale the co-located motion vector according to its temporal span */ | ||
480 | 526000 | pmv_fw->x = (((den + (den * col_mv->x * pmv_fw->dist ^ m) - m - 1) >> 14) ^ m) - m; | |
481 | 526000 | pmv_bw->x = m - (((den + (den * col_mv->x * pmv_bw->dist ^ m) - m - 1) >> 14) ^ m); | |
482 | 526000 | m = FF_SIGNBIT(col_mv->y); | |
483 | 526000 | pmv_fw->y = (((den + (den * col_mv->y * pmv_fw->dist ^ m) - m - 1) >> 14) ^ m) - m; | |
484 | 526000 | pmv_bw->y = m - (((den + (den * col_mv->y * pmv_bw->dist ^ m) - m - 1) >> 14) ^ m); | |
485 | 526000 | } | |
486 | |||
487 | 28328 | static inline void mv_pred_sym(AVSContext *h, cavs_vector *src, | |
488 | enum cavs_block size) | ||
489 | { | ||
490 | 28328 | cavs_vector *dst = src + MV_BWD_OFFS; | |
491 | |||
492 | /* backward mv is the scaled and negated forward mv */ | ||
493 | 28328 | dst->x = -((src->x * h->sym_factor + 256) >> 9); | |
494 | 28328 | dst->y = -((src->y * h->sym_factor + 256) >> 9); | |
495 | 28328 | dst->ref = 0; | |
496 | 28328 | dst->dist = h->dist[0]; | |
497 | 28328 | set_mvs(dst, size); | |
498 | 28328 | } | |
499 | |||
500 | /***************************************************************************** | ||
501 | * | ||
502 | * residual data decoding | ||
503 | * | ||
504 | ****************************************************************************/ | ||
505 | |||
506 | /** kth-order exponential golomb code */ | ||
507 | 2791502 | static inline int get_ue_code(GetBitContext *gb, int order) | |
508 | { | ||
509 | 2791502 | unsigned ret = get_ue_golomb(gb); | |
510 |
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2791502 | if (ret >= ((1U<<31)>>order)) { |
511 | 3 | av_log(NULL, AV_LOG_ERROR, "get_ue_code: value too large\n"); | |
512 | 3 | return AVERROR_INVALIDDATA; | |
513 | } | ||
514 |
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2791499 | if (order) { |
515 | 2402705 | return (ret<<order) + get_bits(gb, order); | |
516 | } | ||
517 | 388794 | return ret; | |
518 | } | ||
519 | |||
520 | 358756 | static inline int dequant(AVSContext *h, int16_t *level_buf, uint8_t *run_buf, | |
521 | int16_t *dst, int mul, int shift, int coeff_num) | ||
522 | { | ||
523 | 358756 | int round = 1 << (shift - 1); | |
524 | 358756 | int pos = -1; | |
525 | 358756 | const uint8_t *scantab = h->permutated_scantable; | |
526 | |||
527 | /* inverse scan and dequantization */ | ||
528 |
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2718730 | while (--coeff_num >= 0) { |
529 | 2359974 | pos += run_buf[coeff_num]; | |
530 |
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2359974 | if (pos > 63) { |
531 | ✗ | av_log(h->avctx, AV_LOG_ERROR, | |
532 | "position out of block bounds at pic %d MB(%d,%d)\n", | ||
533 | h->cur.poc, h->mbx, h->mby); | ||
534 | ✗ | return AVERROR_INVALIDDATA; | |
535 | } | ||
536 | 2359974 | dst[scantab[pos]] = (level_buf[coeff_num] * mul + round) >> shift; | |
537 | } | ||
538 | 358756 | return 0; | |
539 | } | ||
540 | |||
541 | /** | ||
542 | * decode coefficients from one 8x8 block, dequantize, inverse transform | ||
543 | * and add them to sample block | ||
544 | * @param r pointer to 2D VLC table | ||
545 | * @param esc_golomb_order escape codes are k-golomb with this order k | ||
546 | * @param qp quantizer | ||
547 | * @param dst location of sample block | ||
548 | * @param stride line stride in frame buffer | ||
549 | */ | ||
550 | 358759 | static int decode_residual_block(AVSContext *h, GetBitContext *gb, | |
551 | const struct dec_2dvlc *r, int esc_golomb_order, | ||
552 | int qp, uint8_t *dst, ptrdiff_t stride) | ||
553 | { | ||
554 | int i, esc_code, level, mask, ret; | ||
555 | unsigned int level_code, run; | ||
556 | int16_t level_buf[65]; | ||
557 | uint8_t run_buf[65]; | ||
558 | 358759 | int16_t *block = h->block; | |
559 | |||
560 |
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2718736 | for (i = 0; i < 65; i++) { |
561 | 2718736 | level_code = get_ue_code(gb, r->golomb_order); | |
562 |
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2718736 | if (level_code >= ESCAPE_CODE) { |
563 | 72769 | run = ((level_code - ESCAPE_CODE) >> 1) + 1; | |
564 |
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72769 | if(run > 64) { |
565 | 3 | av_log(h->avctx, AV_LOG_ERROR, "run %d is too large\n", run); | |
566 | 3 | return AVERROR_INVALIDDATA; | |
567 | } | ||
568 | 72766 | esc_code = get_ue_code(gb, esc_golomb_order); | |
569 |
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72766 | if (esc_code < 0 || esc_code > 32767) { |
570 | ✗ | av_log(h->avctx, AV_LOG_ERROR, "esc_code invalid\n"); | |
571 | ✗ | return AVERROR_INVALIDDATA; | |
572 | } | ||
573 | |||
574 |
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72766 | level = esc_code + (run > r->max_run ? 1 : r->level_add[run]); |
575 |
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141617 | while (level > r->inc_limit) |
576 | 68851 | r++; | |
577 | 72766 | mask = -(level_code & 1); | |
578 | 72766 | level = (level ^ mask) - mask; | |
579 | } else { | ||
580 | 2645967 | level = r->rltab[level_code][0]; | |
581 |
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2645967 | if (!level) //end of block signal |
582 | 358756 | break; | |
583 | 2287211 | run = r->rltab[level_code][1]; | |
584 | 2287211 | r += r->rltab[level_code][2]; | |
585 | } | ||
586 | 2359977 | level_buf[i] = level; | |
587 | 2359977 | run_buf[i] = run; | |
588 | } | ||
589 |
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358756 | if ((ret = dequant(h, level_buf, run_buf, block, dequant_mul[qp], |
590 | 358756 | dequant_shift[qp], i)) < 0) | |
591 | ✗ | return ret; | |
592 | 358756 | h->cdsp.cavs_idct8_add(dst, block, stride); | |
593 | 358756 | h->bdsp.clear_block(block); | |
594 | 358756 | return 0; | |
595 | } | ||
596 | |||
597 | |||
598 | 174001 | static inline int decode_residual_chroma(AVSContext *h) | |
599 | { | ||
600 |
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174001 | if (h->cbp & (1 << 4)) { |
601 | 63485 | int ret = decode_residual_block(h, &h->gb, chroma_dec, 0, | |
602 | 63485 | ff_cavs_chroma_qp[h->qp], h->cu, h->c_stride); | |
603 |
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63485 | if (ret < 0) |
604 | 1 | return ret; | |
605 | } | ||
606 |
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174000 | if (h->cbp & (1 << 5)) { |
607 | 70783 | int ret = decode_residual_block(h, &h->gb, chroma_dec, 0, | |
608 | 70783 | ff_cavs_chroma_qp[h->qp], h->cv, h->c_stride); | |
609 |
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70783 | if (ret < 0) |
610 | ✗ | return ret; | |
611 | } | ||
612 | 174000 | return 0; | |
613 | } | ||
614 | |||
615 | 144867 | static inline int decode_residual_inter(AVSContext *h) | |
616 | { | ||
617 | int block; | ||
618 | |||
619 | /* get coded block pattern */ | ||
620 | 144867 | int cbp = get_ue_golomb(&h->gb); | |
621 |
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144867 | if (cbp > 63U) { |
622 | ✗ | av_log(h->avctx, AV_LOG_ERROR, "illegal inter cbp %d\n", cbp); | |
623 | ✗ | return AVERROR_INVALIDDATA; | |
624 | } | ||
625 | 144867 | h->cbp = cbp_tab[cbp][1]; | |
626 | |||
627 | /* get quantizer */ | ||
628 |
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144867 | if (h->cbp && !h->qp_fixed) |
629 | ✗ | h->qp = (h->qp + (unsigned)get_se_golomb(&h->gb)) & 63; | |
630 |
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724335 | for (block = 0; block < 4; block++) |
631 |
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579468 | if (h->cbp & (1 << block)) |
632 | 181616 | decode_residual_block(h, &h->gb, inter_dec, 0, h->qp, | |
633 | 181616 | h->cy + h->luma_scan[block], h->l_stride); | |
634 | 144867 | decode_residual_chroma(h); | |
635 | |||
636 | 144867 | return 0; | |
637 | } | ||
638 | |||
639 | /***************************************************************************** | ||
640 | * | ||
641 | * macroblock level | ||
642 | * | ||
643 | ****************************************************************************/ | ||
644 | |||
645 | 29134 | static inline void set_mv_intra(AVSContext *h) | |
646 | { | ||
647 | 29134 | h->mv[MV_FWD_X0] = ff_cavs_intra_mv; | |
648 | 29134 | set_mvs(&h->mv[MV_FWD_X0], BLK_16X16); | |
649 | 29134 | h->mv[MV_BWD_X0] = ff_cavs_intra_mv; | |
650 | 29134 | set_mvs(&h->mv[MV_BWD_X0], BLK_16X16); | |
651 |
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29134 | if (h->cur.f->pict_type != AV_PICTURE_TYPE_B) |
652 | 25882 | h->col_type_base[h->mbidx] = I_8X8; | |
653 | 29134 | } | |
654 | |||
655 | 29134 | static int decode_mb_i(AVSContext *h, int cbp_code) | |
656 | { | ||
657 | 29134 | GetBitContext *gb = &h->gb; | |
658 | unsigned pred_mode_uv; | ||
659 | int block; | ||
660 | uint8_t top[18]; | ||
661 | 29134 | uint8_t *left = NULL; | |
662 | uint8_t *d; | ||
663 | int ret; | ||
664 | |||
665 | 29134 | ff_cavs_init_mb(h); | |
666 | |||
667 | /* get intra prediction modes from stream */ | ||
668 |
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145670 | for (block = 0; block < 4; block++) { |
669 | int nA, nB, predpred; | ||
670 | 116536 | int pos = scan3x3[block]; | |
671 | |||
672 | 116536 | nA = h->pred_mode_Y[pos - 1]; | |
673 | 116536 | nB = h->pred_mode_Y[pos - 3]; | |
674 | 116536 | predpred = FFMIN(nA, nB); | |
675 |
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116536 | if (predpred == NOT_AVAIL) // if either is not available |
676 | 2126 | predpred = INTRA_L_LP; | |
677 |
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116536 | if (!get_bits1(gb)) { |
678 | 23170 | int rem_mode = get_bits(gb, 2); | |
679 | 23170 | predpred = rem_mode + (rem_mode >= predpred); | |
680 | } | ||
681 | 116536 | h->pred_mode_Y[pos] = predpred; | |
682 | } | ||
683 | 29134 | pred_mode_uv = get_ue_golomb_31(gb); | |
684 |
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29134 | if (pred_mode_uv > 6) { |
685 | ✗ | av_log(h->avctx, AV_LOG_ERROR, "illegal intra chroma pred mode\n"); | |
686 | ✗ | return AVERROR_INVALIDDATA; | |
687 | } | ||
688 | 29134 | ff_cavs_modify_mb_i(h, &pred_mode_uv); | |
689 | |||
690 | /* get coded block pattern */ | ||
691 |
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29134 | if (h->cur.f->pict_type == AV_PICTURE_TYPE_I) |
692 | 18180 | cbp_code = get_ue_golomb(gb); | |
693 |
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29134 | if (cbp_code > 63U) { |
694 | ✗ | av_log(h->avctx, AV_LOG_ERROR, "illegal intra cbp\n"); | |
695 | ✗ | return AVERROR_INVALIDDATA; | |
696 | } | ||
697 | 29134 | h->cbp = cbp_tab[cbp_code][0]; | |
698 |
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29134 | if (h->cbp && !h->qp_fixed) |
699 | 2289 | h->qp = (h->qp + (unsigned)get_se_golomb(gb)) & 63; //qp_delta | |
700 | |||
701 | /* luma intra prediction interleaved with residual decode/transform/add */ | ||
702 |
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145670 | for (block = 0; block < 4; block++) { |
703 | 116536 | d = h->cy + h->luma_scan[block]; | |
704 | 116536 | ff_cavs_load_intra_pred_luma(h, top, &left, block); | |
705 | 116536 | h->intra_pred_l[h->pred_mode_Y[scan3x3[block]]] | |
706 | (d, top, left, h->l_stride); | ||
707 |
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116536 | if (h->cbp & (1<<block)) { |
708 | 42875 | ret = decode_residual_block(h, gb, intra_dec, 1, h->qp, d, h->l_stride); | |
709 |
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42875 | if (ret < 0) |
710 | ✗ | return ret; | |
711 | } | ||
712 | } | ||
713 | |||
714 | /* chroma intra prediction */ | ||
715 | 29134 | ff_cavs_load_intra_pred_chroma(h); | |
716 | 29134 | h->intra_pred_c[pred_mode_uv](h->cu, &h->top_border_u[h->mbx * 10], | |
717 | 29134 | h->left_border_u, h->c_stride); | |
718 | 29134 | h->intra_pred_c[pred_mode_uv](h->cv, &h->top_border_v[h->mbx * 10], | |
719 | 29134 | h->left_border_v, h->c_stride); | |
720 | |||
721 | 29134 | ret = decode_residual_chroma(h); | |
722 |
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29134 | if (ret < 0) |
723 | ✗ | return ret; | |
724 | 29134 | ff_cavs_filter(h, I_8X8); | |
725 | 29134 | set_mv_intra(h); | |
726 | 29134 | return 0; | |
727 | } | ||
728 | |||
729 | 273831 | static inline void set_intra_mode_default(AVSContext *h) | |
730 | { | ||
731 |
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273831 | if (h->stream_revision > 0) { |
732 | ✗ | h->pred_mode_Y[3] = h->pred_mode_Y[6] = NOT_AVAIL; | |
733 | ✗ | h->top_pred_Y[h->mbx * 2 + 0] = h->top_pred_Y[h->mbx * 2 + 1] = NOT_AVAIL; | |
734 | } else { | ||
735 | 273831 | h->pred_mode_Y[3] = h->pred_mode_Y[6] = INTRA_L_LP; | |
736 | 273831 | h->top_pred_Y[h->mbx * 2 + 0] = h->top_pred_Y[h->mbx * 2 + 1] = INTRA_L_LP; | |
737 | } | ||
738 | 273831 | } | |
739 | |||
740 | 83018 | static void decode_mb_p(AVSContext *h, enum cavs_mb mb_type) | |
741 | { | ||
742 | 83018 | GetBitContext *gb = &h->gb; | |
743 | int ref[4]; | ||
744 | |||
745 | 83018 | ff_cavs_init_mb(h); | |
746 |
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83018 | switch (mb_type) { |
747 | 20801 | case P_SKIP: | |
748 | 20801 | ff_cavs_mv(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_PSKIP, BLK_16X16, 0); | |
749 | 20801 | break; | |
750 | 48877 | case P_16X16: | |
751 |
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48877 | ref[0] = h->ref_flag ? 0 : get_bits1(gb); |
752 | 48877 | ff_cavs_mv(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_MEDIAN, BLK_16X16, ref[0]); | |
753 | 48877 | break; | |
754 | 3399 | case P_16X8: | |
755 |
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3399 | ref[0] = h->ref_flag ? 0 : get_bits1(gb); |
756 |
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3399 | ref[2] = h->ref_flag ? 0 : get_bits1(gb); |
757 | 3399 | ff_cavs_mv(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_TOP, BLK_16X8, ref[0]); | |
758 | 3399 | ff_cavs_mv(h, MV_FWD_X2, MV_FWD_A1, MV_PRED_LEFT, BLK_16X8, ref[2]); | |
759 | 3399 | break; | |
760 | 3154 | case P_8X16: | |
761 |
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3154 | ref[0] = h->ref_flag ? 0 : get_bits1(gb); |
762 |
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3154 | ref[1] = h->ref_flag ? 0 : get_bits1(gb); |
763 | 3154 | ff_cavs_mv(h, MV_FWD_X0, MV_FWD_B3, MV_PRED_LEFT, BLK_8X16, ref[0]); | |
764 | 3154 | ff_cavs_mv(h, MV_FWD_X1, MV_FWD_C2, MV_PRED_TOPRIGHT, BLK_8X16, ref[1]); | |
765 | 3154 | break; | |
766 | 6787 | case P_8X8: | |
767 |
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6787 | ref[0] = h->ref_flag ? 0 : get_bits1(gb); |
768 |
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6787 | ref[1] = h->ref_flag ? 0 : get_bits1(gb); |
769 |
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6787 | ref[2] = h->ref_flag ? 0 : get_bits1(gb); |
770 |
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6787 | ref[3] = h->ref_flag ? 0 : get_bits1(gb); |
771 | 6787 | ff_cavs_mv(h, MV_FWD_X0, MV_FWD_B3, MV_PRED_MEDIAN, BLK_8X8, ref[0]); | |
772 | 6787 | ff_cavs_mv(h, MV_FWD_X1, MV_FWD_C2, MV_PRED_MEDIAN, BLK_8X8, ref[1]); | |
773 | 6787 | ff_cavs_mv(h, MV_FWD_X2, MV_FWD_X1, MV_PRED_MEDIAN, BLK_8X8, ref[2]); | |
774 | 6787 | ff_cavs_mv(h, MV_FWD_X3, MV_FWD_X0, MV_PRED_MEDIAN, BLK_8X8, ref[3]); | |
775 | } | ||
776 | 83018 | ff_cavs_inter(h, mb_type); | |
777 | 83018 | set_intra_mode_default(h); | |
778 | 83018 | store_mvs(h); | |
779 |
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83018 | if (mb_type != P_SKIP) |
780 | 62217 | decode_residual_inter(h); | |
781 | 83018 | ff_cavs_filter(h, mb_type); | |
782 | 83018 | h->col_type_base[h->mbidx] = mb_type; | |
783 | 83018 | } | |
784 | |||
785 | 190813 | static int decode_mb_b(AVSContext *h, enum cavs_mb mb_type) | |
786 | { | ||
787 | int block; | ||
788 | enum cavs_sub_mb sub_type[4]; | ||
789 | int flags; | ||
790 | |||
791 | 190813 | ff_cavs_init_mb(h); | |
792 | |||
793 | /* reset all MVs */ | ||
794 | 190813 | h->mv[MV_FWD_X0] = ff_cavs_dir_mv; | |
795 | 190813 | set_mvs(&h->mv[MV_FWD_X0], BLK_16X16); | |
796 | 190813 | h->mv[MV_BWD_X0] = ff_cavs_dir_mv; | |
797 | 190813 | set_mvs(&h->mv[MV_BWD_X0], BLK_16X16); | |
798 |
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190813 | switch (mb_type) { |
799 | 145959 | case B_SKIP: | |
800 | case B_DIRECT: | ||
801 |
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145959 | if (!h->col_type_base[h->mbidx]) { |
802 | /* intra MB at co-location, do in-plane prediction */ | ||
803 | 14459 | ff_cavs_mv(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_BSKIP, BLK_16X16, 1); | |
804 | 14459 | ff_cavs_mv(h, MV_BWD_X0, MV_BWD_C2, MV_PRED_BSKIP, BLK_16X16, 0); | |
805 | } else | ||
806 | /* direct prediction from co-located P MB, block-wise */ | ||
807 |
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657500 | for (block = 0; block < 4; block++) |
808 | 526000 | mv_pred_direct(h, &h->mv[mv_scan[block]], | |
809 | 526000 | &h->col_mv[h->mbidx * 4 + block]); | |
810 | 145959 | break; | |
811 | 7352 | case B_FWD_16X16: | |
812 | 7352 | ff_cavs_mv(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_MEDIAN, BLK_16X16, 1); | |
813 | 7352 | break; | |
814 | 3131 | case B_SYM_16X16: | |
815 | 3131 | ff_cavs_mv(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_MEDIAN, BLK_16X16, 1); | |
816 | 3131 | mv_pred_sym(h, &h->mv[MV_FWD_X0], BLK_16X16); | |
817 | 3131 | break; | |
818 | 5777 | case B_BWD_16X16: | |
819 | 5777 | ff_cavs_mv(h, MV_BWD_X0, MV_BWD_C2, MV_PRED_MEDIAN, BLK_16X16, 0); | |
820 | 5777 | break; | |
821 | 13841 | case B_8X8: | |
822 | #define TMP_UNUSED_INX 7 | ||
823 | 13841 | flags = 0; | |
824 |
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69205 | for (block = 0; block < 4; block++) |
825 | 55364 | sub_type[block] = get_bits(&h->gb, 2); | |
826 |
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69205 | for (block = 0; block < 4; block++) { |
827 |
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55364 | switch (sub_type[block]) { |
828 | ✗ | case B_SUB_DIRECT: | |
829 | ✗ | if (!h->col_type_base[h->mbidx]) { | |
830 | /* intra MB at co-location, do in-plane prediction */ | ||
831 | ✗ | if(flags==0) { | |
832 | // if col-MB is a Intra MB, current Block size is 16x16. | ||
833 | // AVS standard section 9.9.1 | ||
834 | ✗ | if(block>0){ | |
835 | ✗ | h->mv[TMP_UNUSED_INX ] = h->mv[MV_FWD_X0 ]; | |
836 | ✗ | h->mv[TMP_UNUSED_INX + MV_BWD_OFFS] = h->mv[MV_FWD_X0 + MV_BWD_OFFS]; | |
837 | } | ||
838 | ✗ | ff_cavs_mv(h, MV_FWD_X0, MV_FWD_C2, | |
839 | MV_PRED_BSKIP, BLK_8X8, 1); | ||
840 | ✗ | ff_cavs_mv(h, MV_FWD_X0+MV_BWD_OFFS, | |
841 | MV_FWD_C2+MV_BWD_OFFS, | ||
842 | MV_PRED_BSKIP, BLK_8X8, 0); | ||
843 | ✗ | if(block>0) { | |
844 | ✗ | flags = mv_scan[block]; | |
845 | ✗ | h->mv[flags ] = h->mv[MV_FWD_X0 ]; | |
846 | ✗ | h->mv[flags + MV_BWD_OFFS] = h->mv[MV_FWD_X0 + MV_BWD_OFFS]; | |
847 | ✗ | h->mv[MV_FWD_X0 ] = h->mv[TMP_UNUSED_INX ]; | |
848 | ✗ | h->mv[MV_FWD_X0 + MV_BWD_OFFS] = h->mv[TMP_UNUSED_INX + MV_BWD_OFFS]; | |
849 | } else | ||
850 | ✗ | flags = MV_FWD_X0; | |
851 | } else { | ||
852 | ✗ | h->mv[mv_scan[block] ] = h->mv[flags ]; | |
853 | ✗ | h->mv[mv_scan[block] + MV_BWD_OFFS] = h->mv[flags + MV_BWD_OFFS]; | |
854 | } | ||
855 | } else | ||
856 | ✗ | mv_pred_direct(h, &h->mv[mv_scan[block]], | |
857 | ✗ | &h->col_mv[h->mbidx * 4 + block]); | |
858 | ✗ | break; | |
859 | 20371 | case B_SUB_FWD: | |
860 | 20371 | ff_cavs_mv(h, mv_scan[block], mv_scan[block] - 3, | |
861 | MV_PRED_MEDIAN, BLK_8X8, 1); | ||
862 | 20371 | break; | |
863 | 16570 | case B_SUB_SYM: | |
864 | 16570 | ff_cavs_mv(h, mv_scan[block], mv_scan[block] - 3, | |
865 | MV_PRED_MEDIAN, BLK_8X8, 1); | ||
866 | 16570 | mv_pred_sym(h, &h->mv[mv_scan[block]], BLK_8X8); | |
867 | 16570 | break; | |
868 | } | ||
869 | } | ||
870 | #undef TMP_UNUSED_INX | ||
871 |
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69205 | for (block = 0; block < 4; block++) { |
872 |
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55364 | if (sub_type[block] == B_SUB_BWD) |
873 | 18423 | ff_cavs_mv(h, mv_scan[block] + MV_BWD_OFFS, | |
874 | 18423 | mv_scan[block] + MV_BWD_OFFS - 3, | |
875 | MV_PRED_MEDIAN, BLK_8X8, 0); | ||
876 | } | ||
877 | 13841 | break; | |
878 | 14753 | default: | |
879 |
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14753 | if (mb_type <= B_SYM_16X16) { |
880 | ✗ | av_log(h->avctx, AV_LOG_ERROR, "Invalid mb_type %d in B frame\n", mb_type); | |
881 | ✗ | return AVERROR_INVALIDDATA; | |
882 | } | ||
883 | av_assert2(mb_type < B_8X8); | ||
884 | 14753 | flags = ff_cavs_partition_flags[mb_type]; | |
885 |
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|
14753 | if (mb_type & 1) { /* 16x8 macroblock types */ |
886 |
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|
7898 | if (flags & FWD0) |
887 | 5294 | ff_cavs_mv(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_TOP, BLK_16X8, 1); | |
888 |
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|
7898 | if (flags & SYM0) |
889 | 2140 | mv_pred_sym(h, &h->mv[MV_FWD_X0], BLK_16X8); | |
890 |
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|
7898 | if (flags & FWD1) |
891 | 5400 | ff_cavs_mv(h, MV_FWD_X2, MV_FWD_A1, MV_PRED_LEFT, BLK_16X8, 1); | |
892 |
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7898 | if (flags & SYM1) |
893 | 2495 | mv_pred_sym(h, &h->mv[MV_FWD_X2], BLK_16X8); | |
894 |
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|
7898 | if (flags & BWD0) |
895 | 2604 | ff_cavs_mv(h, MV_BWD_X0, MV_BWD_C2, MV_PRED_TOP, BLK_16X8, 0); | |
896 |
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|
7898 | if (flags & BWD1) |
897 | 2498 | ff_cavs_mv(h, MV_BWD_X2, MV_BWD_A1, MV_PRED_LEFT, BLK_16X8, 0); | |
898 | } else { /* 8x16 macroblock types */ | ||
899 |
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|
6855 | if (flags & FWD0) |
900 | 4601 | ff_cavs_mv(h, MV_FWD_X0, MV_FWD_B3, MV_PRED_LEFT, BLK_8X16, 1); | |
901 |
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6855 | if (flags & SYM0) |
902 | 1976 | mv_pred_sym(h, &h->mv[MV_FWD_X0], BLK_8X16); | |
903 |
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|
6855 | if (flags & FWD1) |
904 | 4556 | ff_cavs_mv(h, MV_FWD_X1, MV_FWD_C2, MV_PRED_TOPRIGHT, BLK_8X16, 1); | |
905 |
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6855 | if (flags & SYM1) |
906 | 2016 | mv_pred_sym(h, &h->mv[MV_FWD_X1], BLK_8X16); | |
907 |
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|
6855 | if (flags & BWD0) |
908 | 2254 | ff_cavs_mv(h, MV_BWD_X0, MV_BWD_B3, MV_PRED_LEFT, BLK_8X16, 0); | |
909 |
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6855 | if (flags & BWD1) |
910 | 2299 | ff_cavs_mv(h, MV_BWD_X1, MV_BWD_C2, MV_PRED_TOPRIGHT, BLK_8X16, 0); | |
911 | } | ||
912 | } | ||
913 | 190813 | ff_cavs_inter(h, mb_type); | |
914 | 190813 | set_intra_mode_default(h); | |
915 |
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190813 | if (mb_type != B_SKIP) |
916 | 82650 | decode_residual_inter(h); | |
917 | 190813 | ff_cavs_filter(h, mb_type); | |
918 | |||
919 | 190813 | return 0; | |
920 | } | ||
921 | |||
922 | /***************************************************************************** | ||
923 | * | ||
924 | * slice level | ||
925 | * | ||
926 | ****************************************************************************/ | ||
927 | |||
928 | 2 | static inline int decode_slice_header(AVSContext *h, GetBitContext *gb) | |
929 | { | ||
930 |
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2 | if (h->stc > 0xAF) |
931 | ✗ | av_log(h->avctx, AV_LOG_ERROR, "unexpected start code 0x%02x\n", h->stc); | |
932 | |||
933 |
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2 | if (h->stc >= h->mb_height) { |
934 | ✗ | av_log(h->avctx, AV_LOG_ERROR, "stc 0x%02x is too large\n", h->stc); | |
935 | ✗ | return AVERROR_INVALIDDATA; | |
936 | } | ||
937 | |||
938 | 2 | h->mby = h->stc; | |
939 | 2 | h->mbidx = h->mby * h->mb_width; | |
940 | |||
941 | /* mark top macroblocks as unavailable */ | ||
942 | 2 | h->flags &= ~(B_AVAIL | C_AVAIL); | |
943 |
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2 | if (!h->pic_qp_fixed) { |
944 | 2 | h->qp_fixed = get_bits1(gb); | |
945 | 2 | h->qp = get_bits(gb, 6); | |
946 | } | ||
947 | /* inter frame or second slice can have weighting params */ | ||
948 |
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2 | if ((h->cur.f->pict_type != AV_PICTURE_TYPE_I) || |
949 |
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1 | (!h->pic_structure && h->mby >= h->mb_width / 2)) |
950 |
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1 | if (get_bits1(gb)) { //slice_weighting_flag |
951 | 1 | av_log(h->avctx, AV_LOG_ERROR, | |
952 | "weighted prediction not yet supported\n"); | ||
953 | } | ||
954 | 2 | return 0; | |
955 | } | ||
956 | |||
957 | 302966 | static inline int check_for_slice(AVSContext *h) | |
958 | { | ||
959 | 302966 | GetBitContext *gb = &h->gb; | |
960 | int align; | ||
961 | |||
962 |
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302966 | if (h->mbx) |
963 | 296268 | return 0; | |
964 | 6698 | align = (-get_bits_count(gb)) & 7; | |
965 | /* check for stuffing byte */ | ||
966 |
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6698 | if (!align && (show_bits(gb, 8) == 0x80)) |
967 | 3 | align = 8; | |
968 |
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|
6698 | if ((show_bits_long(gb, 24 + align) & 0xFFFFFF) == 0x000001) { |
969 | 1 | skip_bits_long(gb, 24 + align); | |
970 | 1 | h->stc = get_bits(gb, 8); | |
971 |
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1 | if (h->stc >= h->mb_height) |
972 | ✗ | return 0; | |
973 | 1 | decode_slice_header(h, gb); | |
974 | 1 | return 1; | |
975 | } | ||
976 | 6697 | return 0; | |
977 | } | ||
978 | |||
979 | /***************************************************************************** | ||
980 | * | ||
981 | * frame level | ||
982 | * | ||
983 | ****************************************************************************/ | ||
984 | |||
985 | 186 | static int decode_pic(AVSContext *h) | |
986 | { | ||
987 | int ret; | ||
988 | 186 | int skip_count = -1; | |
989 | enum cavs_mb mb_type; | ||
990 | |||
991 |
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186 | if (!h->top_qp) { |
992 | ✗ | av_log(h->avctx, AV_LOG_ERROR, "No sequence header decoded yet\n"); | |
993 | ✗ | return AVERROR_INVALIDDATA; | |
994 | } | ||
995 | |||
996 | 186 | av_frame_unref(h->cur.f); | |
997 | |||
998 | 186 | skip_bits(&h->gb, 16);//bbv_dwlay | |
999 |
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186 | if (h->stc == PIC_PB_START_CODE) { |
1000 | 176 | h->cur.f->pict_type = get_bits(&h->gb, 2) + AV_PICTURE_TYPE_I; | |
1001 |
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176 | if (h->cur.f->pict_type > AV_PICTURE_TYPE_B) { |
1002 | ✗ | av_log(h->avctx, AV_LOG_ERROR, "illegal picture type\n"); | |
1003 | ✗ | return AVERROR_INVALIDDATA; | |
1004 | } | ||
1005 | /* make sure we have the reference frames we need */ | ||
1006 |
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176 | if (!h->DPB[0].f->data[0] || |
1007 |
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176 | (!h->DPB[1].f->data[0] && h->cur.f->pict_type == AV_PICTURE_TYPE_B)) |
1008 | ✗ | return AVERROR_INVALIDDATA; | |
1009 | } else { | ||
1010 | 10 | h->cur.f->pict_type = AV_PICTURE_TYPE_I; | |
1011 |
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10 | if (get_bits1(&h->gb)) |
1012 | ✗ | skip_bits(&h->gb, 24);//time_code | |
1013 | /* old sample clips were all progressive and no low_delay, | ||
1014 | bump stream revision if detected otherwise */ | ||
1015 |
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10 | if (h->low_delay || !(show_bits(&h->gb, 9) & 1)) |
1016 | 1 | h->stream_revision = 1; | |
1017 | /* similarly test top_field_first and repeat_first_field */ | ||
1018 |
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9 | else if (show_bits(&h->gb, 11) & 3) |
1019 | ✗ | h->stream_revision = 1; | |
1020 |
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10 | if (h->stream_revision > 0) |
1021 | 1 | skip_bits(&h->gb, 1); //marker_bit | |
1022 | } | ||
1023 | |||
1024 |
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186 | if (get_bits_left(&h->gb) < 23) |
1025 | ✗ | return AVERROR_INVALIDDATA; | |
1026 | |||
1027 | 186 | ret = ff_get_buffer(h->avctx, h->cur.f, h->cur.f->pict_type == AV_PICTURE_TYPE_B ? | |
1028 | 0 : AV_GET_BUFFER_FLAG_REF); | ||
1029 |
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186 | if (ret < 0) |
1030 | ✗ | return ret; | |
1031 | |||
1032 |
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186 | if (!h->edge_emu_buffer) { |
1033 | 5 | int alloc_size = FFALIGN(FFABS(h->cur.f->linesize[0]) + 32, 32); | |
1034 | 5 | h->edge_emu_buffer = av_mallocz(alloc_size * 2 * 24); | |
1035 |
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5 | if (!h->edge_emu_buffer) |
1036 | ✗ | return AVERROR(ENOMEM); | |
1037 | } | ||
1038 | |||
1039 |
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186 | if ((ret = ff_cavs_init_pic(h)) < 0) |
1040 | ✗ | return ret; | |
1041 | 186 | h->cur.poc = get_bits(&h->gb, 8) * 2; | |
1042 | |||
1043 | /* get temporal distances and MV scaling factors */ | ||
1044 |
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186 | if (h->cur.f->pict_type != AV_PICTURE_TYPE_B) { |
1045 | 66 | h->dist[0] = (h->cur.poc - h->DPB[0].poc) & 511; | |
1046 | } else { | ||
1047 | 120 | h->dist[0] = (h->DPB[0].poc - h->cur.poc) & 511; | |
1048 | } | ||
1049 | 186 | h->dist[1] = (h->cur.poc - h->DPB[1].poc) & 511; | |
1050 |
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186 | h->scale_den[0] = h->dist[0] ? 512/h->dist[0] : 0; |
1051 |
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186 | h->scale_den[1] = h->dist[1] ? 512/h->dist[1] : 0; |
1052 |
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186 | if (h->cur.f->pict_type == AV_PICTURE_TYPE_B) { |
1053 | 120 | h->sym_factor = h->dist[0] * h->scale_den[1]; | |
1054 |
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120 | if (FFABS(h->sym_factor) > 32768) { |
1055 | ✗ | av_log(h->avctx, AV_LOG_ERROR, "sym_factor %d too large\n", h->sym_factor); | |
1056 | ✗ | return AVERROR_INVALIDDATA; | |
1057 | } | ||
1058 | } else { | ||
1059 |
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66 | h->direct_den[0] = h->dist[0] ? 16384 / h->dist[0] : 0; |
1060 |
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66 | h->direct_den[1] = h->dist[1] ? 16384 / h->dist[1] : 0; |
1061 | } | ||
1062 | |||
1063 |
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186 | if (h->low_delay) |
1064 | ✗ | get_ue_golomb(&h->gb); //bbv_check_times | |
1065 | 186 | h->progressive = get_bits1(&h->gb); | |
1066 | 186 | h->pic_structure = 1; | |
1067 |
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186 | if (!h->progressive) |
1068 | ✗ | h->pic_structure = get_bits1(&h->gb); | |
1069 |
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186 | if (!h->pic_structure && h->stc == PIC_PB_START_CODE) |
1070 | ✗ | skip_bits1(&h->gb); //advanced_pred_mode_disable | |
1071 | 186 | skip_bits1(&h->gb); //top_field_first | |
1072 | 186 | skip_bits1(&h->gb); //repeat_first_field | |
1073 | 186 | h->pic_qp_fixed = | |
1074 | 186 | h->qp_fixed = get_bits1(&h->gb); | |
1075 | 186 | h->qp = get_bits(&h->gb, 6); | |
1076 |
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186 | if (h->cur.f->pict_type == AV_PICTURE_TYPE_I) { |
1077 |
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10 | if (!h->progressive && !h->pic_structure) |
1078 | ✗ | skip_bits1(&h->gb);//what is this? | |
1079 | 10 | skip_bits(&h->gb, 4); //reserved bits | |
1080 | } else { | ||
1081 |
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176 | if (!(h->cur.f->pict_type == AV_PICTURE_TYPE_B && h->pic_structure == 1)) |
1082 | 56 | h->ref_flag = get_bits1(&h->gb); | |
1083 | 176 | skip_bits(&h->gb, 4); //reserved bits | |
1084 | 176 | h->skip_mode_flag = get_bits1(&h->gb); | |
1085 | } | ||
1086 | 186 | h->loop_filter_disable = get_bits1(&h->gb); | |
1087 |
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186 | if (!h->loop_filter_disable && get_bits1(&h->gb)) { |
1088 | ✗ | h->alpha_offset = get_se_golomb(&h->gb); | |
1089 | ✗ | h->beta_offset = get_se_golomb(&h->gb); | |
1090 | ✗ | if ( h->alpha_offset < -64 || h->alpha_offset > 64 | |
1091 | ✗ | || h-> beta_offset < -64 || h-> beta_offset > 64) { | |
1092 | ✗ | h->alpha_offset = h->beta_offset = 0; | |
1093 | ✗ | return AVERROR_INVALIDDATA; | |
1094 | } | ||
1095 | } else { | ||
1096 | 186 | h->alpha_offset = h->beta_offset = 0; | |
1097 | } | ||
1098 | |||
1099 | 186 | ret = 0; | |
1100 |
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186 | if (h->cur.f->pict_type == AV_PICTURE_TYPE_I) { |
1101 | do { | ||
1102 | 18180 | check_for_slice(h); | |
1103 | 18180 | ret = decode_mb_i(h, 0); | |
1104 |
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18180 | if (ret < 0) |
1105 | ✗ | break; | |
1106 |
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|
18180 | } while (ff_cavs_next_mb(h)); |
1107 |
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176 | } else if (h->cur.f->pict_type == AV_PICTURE_TYPE_P) { |
1108 | do { | ||
1109 |
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|
90720 | if (check_for_slice(h)) |
1110 | ✗ | skip_count = -1; | |
1111 |
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90720 | if (h->skip_mode_flag && (skip_count < 0)) { |
1112 |
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|
69924 | if (get_bits_left(&h->gb) < 1) { |
1113 | ✗ | ret = AVERROR_INVALIDDATA; | |
1114 | ✗ | break; | |
1115 | } | ||
1116 | 69924 | skip_count = get_ue_golomb(&h->gb); | |
1117 | } | ||
1118 |
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|
90720 | if (h->skip_mode_flag && skip_count--) { |
1119 | 20801 | decode_mb_p(h, P_SKIP); | |
1120 | } else { | ||
1121 |
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|
69919 | if (get_bits_left(&h->gb) < 1) { |
1122 | ✗ | ret = AVERROR_INVALIDDATA; | |
1123 | ✗ | break; | |
1124 | } | ||
1125 | 69919 | mb_type = get_ue_golomb(&h->gb) + P_SKIP + h->skip_mode_flag; | |
1126 |
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69919 | if (mb_type > P_8X8) |
1127 | 7702 | ret = decode_mb_i(h, mb_type - P_8X8 - 1); | |
1128 | else | ||
1129 | 62217 | decode_mb_p(h, mb_type); | |
1130 | } | ||
1131 |
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90720 | if (ret < 0) |
1132 | ✗ | break; | |
1133 |
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90720 | } while (ff_cavs_next_mb(h)); |
1134 | } else { /* AV_PICTURE_TYPE_B */ | ||
1135 | do { | ||
1136 |
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|
194066 | if (check_for_slice(h)) |
1137 | ✗ | skip_count = -1; | |
1138 |
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194066 | if (h->skip_mode_flag && (skip_count < 0)) { |
1139 |
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85940 | if (get_bits_left(&h->gb) < 1) { |
1140 | 1 | ret = AVERROR_INVALIDDATA; | |
1141 | 1 | break; | |
1142 | } | ||
1143 | 85939 | skip_count = get_ue_golomb(&h->gb); | |
1144 | } | ||
1145 |
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194065 | if (h->skip_mode_flag && skip_count--) { |
1146 | 108163 | ret = decode_mb_b(h, B_SKIP); | |
1147 | } else { | ||
1148 |
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|
85902 | if (get_bits_left(&h->gb) < 1) { |
1149 | ✗ | ret = AVERROR_INVALIDDATA; | |
1150 | ✗ | break; | |
1151 | } | ||
1152 | 85902 | mb_type = get_ue_golomb(&h->gb) + B_SKIP + h->skip_mode_flag; | |
1153 |
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85902 | if (mb_type > B_8X8) |
1154 | 3252 | ret = decode_mb_i(h, mb_type - B_8X8 - 1); | |
1155 | else | ||
1156 | 82650 | ret = decode_mb_b(h, mb_type); | |
1157 | } | ||
1158 |
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194065 | if (ret < 0) |
1159 | ✗ | break; | |
1160 |
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194065 | } while (ff_cavs_next_mb(h)); |
1161 | } | ||
1162 | 186 | emms_c(); | |
1163 |
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186 | if (ret >= 0 && h->cur.f->pict_type != AV_PICTURE_TYPE_B) { |
1164 | 66 | av_frame_unref(h->DPB[1].f); | |
1165 | 66 | FFSWAP(AVSFrame, h->cur, h->DPB[1]); | |
1166 | 66 | FFSWAP(AVSFrame, h->DPB[0], h->DPB[1]); | |
1167 | } | ||
1168 | 186 | return ret; | |
1169 | } | ||
1170 | |||
1171 | /***************************************************************************** | ||
1172 | * | ||
1173 | * headers and interface | ||
1174 | * | ||
1175 | ****************************************************************************/ | ||
1176 | |||
1177 | 10 | static int decode_seq_header(AVSContext *h) | |
1178 | { | ||
1179 | int frame_rate_code; | ||
1180 | int width, height; | ||
1181 | int ret; | ||
1182 | |||
1183 | 10 | h->profile = get_bits(&h->gb, 8); | |
1184 |
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10 | if (h->profile != 0x20) { |
1185 | ✗ | avpriv_report_missing_feature(h->avctx, | |
1186 | "only supprt JiZhun profile"); | ||
1187 | ✗ | return AVERROR_PATCHWELCOME; | |
1188 | } | ||
1189 | 10 | h->level = get_bits(&h->gb, 8); | |
1190 | 10 | skip_bits1(&h->gb); //progressive sequence | |
1191 | |||
1192 | 10 | width = get_bits(&h->gb, 14); | |
1193 | 10 | height = get_bits(&h->gb, 14); | |
1194 |
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10 | if ((h->width || h->height) && (h->width != width || h->height != height)) { |
1195 | ✗ | avpriv_report_missing_feature(h->avctx, | |
1196 | "Width/height changing in CAVS"); | ||
1197 | ✗ | return AVERROR_PATCHWELCOME; | |
1198 | } | ||
1199 |
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10 | if (width <= 0 || height <= 0) { |
1200 | ✗ | av_log(h->avctx, AV_LOG_ERROR, "Dimensions invalid\n"); | |
1201 | ✗ | return AVERROR_INVALIDDATA; | |
1202 | } | ||
1203 | 10 | skip_bits(&h->gb, 2); //chroma format | |
1204 | 10 | skip_bits(&h->gb, 3); //sample_precision | |
1205 | 10 | h->aspect_ratio = get_bits(&h->gb, 4); | |
1206 | 10 | frame_rate_code = get_bits(&h->gb, 4); | |
1207 |
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10 | if (frame_rate_code == 0 || frame_rate_code > 13) { |
1208 | ✗ | av_log(h->avctx, AV_LOG_WARNING, | |
1209 | "frame_rate_code %d is invalid\n", frame_rate_code); | ||
1210 | ✗ | frame_rate_code = 1; | |
1211 | } | ||
1212 | |||
1213 | 10 | skip_bits(&h->gb, 18); //bit_rate_lower | |
1214 | 10 | skip_bits1(&h->gb); //marker_bit | |
1215 | 10 | skip_bits(&h->gb, 12); //bit_rate_upper | |
1216 | 10 | h->low_delay = get_bits1(&h->gb); | |
1217 | |||
1218 | 10 | ret = ff_set_dimensions(h->avctx, width, height); | |
1219 |
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10 | if (ret < 0) |
1220 | ✗ | return ret; | |
1221 | |||
1222 | 10 | h->width = width; | |
1223 | 10 | h->height = height; | |
1224 | 10 | h->mb_width = (h->width + 15) >> 4; | |
1225 | 10 | h->mb_height = (h->height + 15) >> 4; | |
1226 | 10 | h->avctx->framerate = ff_mpeg12_frame_rate_tab[frame_rate_code]; | |
1227 |
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10 | if (!h->top_qp) |
1228 | 5 | return ff_cavs_init_top_lines(h); | |
1229 | 5 | return 0; | |
1230 | } | ||
1231 | |||
1232 | ✗ | static void cavs_flush(AVCodecContext * avctx) | |
1233 | { | ||
1234 | ✗ | AVSContext *h = avctx->priv_data; | |
1235 | ✗ | h->got_keyframe = 0; | |
1236 | ✗ | } | |
1237 | |||
1238 | 188 | static int cavs_decode_frame(AVCodecContext *avctx, AVFrame *rframe, | |
1239 | int *got_frame, AVPacket *avpkt) | ||
1240 | { | ||
1241 | 188 | AVSContext *h = avctx->priv_data; | |
1242 | 188 | const uint8_t *buf = avpkt->data; | |
1243 | 188 | int buf_size = avpkt->size; | |
1244 | 188 | uint32_t stc = -1; | |
1245 | int input_size, ret; | ||
1246 | const uint8_t *buf_end; | ||
1247 | const uint8_t *buf_ptr; | ||
1248 | 188 | int frame_start = 0; | |
1249 | |||
1250 |
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188 | if (buf_size == 0) { |
1251 |
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2 | if (!h->low_delay && h->DPB[0].f->data[0]) { |
1252 | 1 | *got_frame = 1; | |
1253 | 1 | av_frame_move_ref(rframe, h->DPB[0].f); | |
1254 | } | ||
1255 | 2 | return 0; | |
1256 | } | ||
1257 | |||
1258 | 186 | h->stc = 0; | |
1259 | |||
1260 | 186 | buf_ptr = buf; | |
1261 | 186 | buf_end = buf + buf_size; | |
1262 | for(;;) { | ||
1263 | 391 | buf_ptr = avpriv_find_start_code(buf_ptr, buf_end, &stc); | |
1264 |
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391 | if ((stc & 0xFFFFFE00) || buf_ptr == buf_end) { |
1265 |
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186 | if (!h->stc) |
1266 | 1 | av_log(h->avctx, AV_LOG_WARNING, "no frame decoded\n"); | |
1267 | 186 | return FFMAX(0, buf_ptr - buf); | |
1268 | } | ||
1269 | 205 | input_size = (buf_end - buf_ptr) * 8; | |
1270 |
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205 | switch (stc) { |
1271 | 10 | case CAVS_START_CODE: | |
1272 | 10 | init_get_bits(&h->gb, buf_ptr, input_size); | |
1273 | 10 | decode_seq_header(h); | |
1274 | 10 | break; | |
1275 | 10 | case PIC_I_START_CODE: | |
1276 |
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10 | if (!h->got_keyframe) { |
1277 | 5 | av_frame_unref(h->DPB[0].f); | |
1278 | 5 | av_frame_unref(h->DPB[1].f); | |
1279 | 5 | h->got_keyframe = 1; | |
1280 | } | ||
1281 | case PIC_PB_START_CODE: | ||
1282 |
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186 | if (frame_start > 1) |
1283 | ✗ | return AVERROR_INVALIDDATA; | |
1284 | 186 | frame_start ++; | |
1285 |
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186 | if (*got_frame) |
1286 | ✗ | av_frame_unref(rframe); | |
1287 | 186 | *got_frame = 0; | |
1288 |
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186 | if (!h->got_keyframe) |
1289 | ✗ | break; | |
1290 | 186 | init_get_bits(&h->gb, buf_ptr, input_size); | |
1291 | 186 | h->stc = stc; | |
1292 |
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186 | if (decode_pic(h)) |
1293 | 1 | break; | |
1294 | 185 | *got_frame = 1; | |
1295 |
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185 | if (h->cur.f->pict_type != AV_PICTURE_TYPE_B) { |
1296 |
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66 | if (h->DPB[!h->low_delay].f->data[0]) { |
1297 |
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61 | if ((ret = av_frame_ref(rframe, h->DPB[!h->low_delay].f)) < 0) |
1298 | ✗ | return ret; | |
1299 | } else { | ||
1300 | 5 | *got_frame = 0; | |
1301 | } | ||
1302 | } else { | ||
1303 | 119 | av_frame_move_ref(rframe, h->cur.f); | |
1304 | } | ||
1305 | 185 | break; | |
1306 | 4 | case EXT_START_CODE: | |
1307 | //mpeg_decode_extension(avctx, buf_ptr, input_size); | ||
1308 | 4 | break; | |
1309 | 4 | case USER_START_CODE: | |
1310 | //mpeg_decode_user_data(avctx, buf_ptr, input_size); | ||
1311 | 4 | break; | |
1312 | 1 | default: | |
1313 |
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1 | if (stc <= SLICE_MAX_START_CODE) { |
1314 | 1 | init_get_bits(&h->gb, buf_ptr, input_size); | |
1315 | 1 | decode_slice_header(h, &h->gb); | |
1316 | } | ||
1317 | 1 | break; | |
1318 | } | ||
1319 | } | ||
1320 | } | ||
1321 | |||
1322 | const FFCodec ff_cavs_decoder = { | ||
1323 | .p.name = "cavs", | ||
1324 | CODEC_LONG_NAME("Chinese AVS (Audio Video Standard) (AVS1-P2, JiZhun profile)"), | ||
1325 | .p.type = AVMEDIA_TYPE_VIDEO, | ||
1326 | .p.id = AV_CODEC_ID_CAVS, | ||
1327 | .priv_data_size = sizeof(AVSContext), | ||
1328 | .init = ff_cavs_init, | ||
1329 | .close = ff_cavs_end, | ||
1330 | FF_CODEC_DECODE_CB(cavs_decode_frame), | ||
1331 | .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY, | ||
1332 | .flush = cavs_flush, | ||
1333 | .caps_internal = FF_CODEC_CAP_INIT_CLEANUP, | ||
1334 | }; | ||
1335 |