* fixing some minor const warnings
[libav.git] / libavcodec / svq1.c
1 /*
2 *
3 * Copyright (C) 2002 the xine project
4 * Copyright (C) 2002 the ffmpeg project
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 *
20 * Ported to mplayer by Arpi <arpi@thot.banki.hu>
21 * Ported to libavcodec by Nick Kurshev <nickols_k@mail.ru>
22 *
23 */
24 //#define DEBUG_SVQ1
25 #include <stdio.h>
26 #include <stdlib.h>
27 #include <string.h>
28 #include <unistd.h>
29
30 #include "common.h"
31 #include "avcodec.h"
32 #include "dsputil.h"
33 #include "mpegvideo.h"
34 #include "bswap.h"
35 #define bit_buffer_t GetBitContext
36
37 static inline unsigned int get_bit_cache(GetBitContext *s){
38 OPEN_READER(re, s)
39 UPDATE_CACHE(re, s)
40 return GET_CACHE(re, s);
41 // CLOSE_READER(re, s)
42 }
43
44 /* variable length (bit) code */
45 typedef struct vlc_code_s {
46 int16_t value :10,
47 length :6;
48 } vlc_code_t;
49
50 #define MEDIAN(a,b,c) (((a < b) != (b >= c)) ? b : (((a < c) != (c > b)) ? c : a))
51
52 #define SVQ1_BLOCK_SKIP 0
53 #define SVQ1_BLOCK_INTER 1
54 #define SVQ1_BLOCK_INTER_4V 2
55 #define SVQ1_BLOCK_INTRA 3
56
57 /* motion vector (prediction) */
58 typedef struct svq1_pmv_s {
59 int x;
60 int y;
61 } svq1_pmv_t;
62
63 #include "svq1_cb.h"
64
65 /* block type, codes 000 .. 1xx */
66 static vlc_code_t svq1_block_type_table[8] = {
67 { SVQ1_BLOCK_INTRA, 3 }, { SVQ1_BLOCK_INTER_4V, 3 },
68 { SVQ1_BLOCK_INTER, 2 }, { SVQ1_BLOCK_INTER, 2 },
69 { SVQ1_BLOCK_SKIP, 1 }, { SVQ1_BLOCK_SKIP, 1 },
70 { SVQ1_BLOCK_SKIP, 1 }, { SVQ1_BLOCK_SKIP, 1 }
71 };
72
73 /* motion vector, codes 0000011 .. 011xxxx */
74 static vlc_code_t svq1_motion_table_0[61] = {
75 { 7, 8 }, { 6, 8 }, { 5, 8 }, { 4, 7 }, { 4, 7 },
76 { 3, 5 }, { 3, 5 }, { 3, 5 }, { 3, 5 }, { 3, 5 }, { 3, 5 }, { 3, 5 }, { 3, 5 },
77 { 2, 4 }, { 2, 4 }, { 2, 4 }, { 2, 4 }, { 2, 4 }, { 2, 4 }, { 2, 4 }, { 2, 4 },
78 { 2, 4 }, { 2, 4 }, { 2, 4 }, { 2, 4 }, { 2, 4 }, { 2, 4 }, { 2, 4 }, { 2, 4 },
79 { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 },
80 { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 },
81 { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 },
82 { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }
83 };
84
85 /* motion vector, codes 000000000010 ... 0000010111xx */
86 static vlc_code_t svq1_motion_table_1[94] = {
87 {32, 13}, {31, 13}, {30, 12}, {30, 12}, {29, 12}, {29, 12},
88 {28, 12}, {28, 12}, {27, 12}, {27, 12}, {26, 12}, {26, 12}, {25, 12}, {25, 12},
89 {24, 11}, {24, 11}, {24, 11}, {24, 11}, {23, 11}, {23, 11}, {23, 11}, {23, 11},
90 {22, 11}, {22, 11}, {22, 11}, {22, 11}, {21, 11}, {21, 11}, {21, 11}, {21, 11},
91 {20, 11}, {20, 11}, {20, 11}, {20, 11}, {19, 11}, {19, 11}, {19, 11}, {19, 11},
92 {18, 11}, {18, 11}, {18, 11}, {18, 11}, {17, 11}, {17, 11}, {17, 11}, {17, 11},
93 {16, 11}, {16, 11}, {16, 11}, {16, 11}, {15, 11}, {15, 11}, {15, 11}, {15, 11},
94 {14, 11}, {14, 11}, {14, 11}, {14, 11}, {13, 11}, {13, 11}, {13, 11}, {13, 11},
95 {12, 11}, {12, 11}, {12, 11}, {12, 11}, {11, 11}, {11, 11}, {11, 11}, {11, 11},
96 {10, 10}, {10, 10}, {10, 10}, {10, 10}, {10, 10}, {10, 10}, {10, 10}, {10, 10},
97 { 9, 10}, { 9, 10}, { 9, 10}, { 9, 10}, { 9, 10}, { 9, 10}, { 9, 10}, { 9, 10},
98 { 8, 10}, { 8, 10}, { 8, 10}, { 8, 10}, { 8, 10}, { 8, 10}, { 8, 10}, { 8, 10},
99 };
100
101 /* inter-coded vector codebook count tables, codes 000000 ... 111111 */
102 static vlc_code_t svq1_inter_vector_tables[6][64] = {
103 /* 4x2 vector, codes 0000xxx ... 11xxxxx */
104 { { 6, 4 }, { 6, 4 }, { 6, 4 }, { 6, 4 }, { 5, 4 }, { 5, 4 }, { 5, 4 }, { 5, 4 },
105 { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 },
106 { 3, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 },
107 { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 },
108 { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 },
109 { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 },
110 {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 },
111 {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 } },
112
113 /* 4x4 vector, codes 0000xxx ... 11xxxxx */
114 { { 6, 4 }, { 6, 4 }, { 6, 4 }, { 6, 4 }, { 5, 4 }, { 5, 4 }, { 5, 4 }, { 5, 4 },
115 { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 },
116 { 3, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 },
117 { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 },
118 { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 },
119 { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 },
120 {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 },
121 {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 } },
122
123 /* 8x4 vector, codes 00000xx ... 1xxxxxx */
124 { { 6, 5 }, { 6, 5 }, { 5, 5 }, { 5, 5 }, { 4, 4 }, { 4, 4 }, { 4, 4 }, { 4, 4 },
125 { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 2, 4 }, { 2, 4 }, { 2, 4 }, { 2, 4 },
126 { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 },
127 { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 },
128 {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 },
129 {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 },
130 {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 },
131 {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 } },
132
133 /* 8x8 vector, codes 00000xx ... 1xxxxxx */
134 { { 6, 5 }, { 6, 5 }, { 5, 5 }, { 5, 5 }, { 4, 4 }, { 4, 4 }, { 4, 4 }, { 4, 4 },
135 { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 2, 4 }, { 2, 4 }, { 2, 4 }, { 2, 4 },
136 { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 },
137 { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 },
138 {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 },
139 {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 },
140 {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 },
141 {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 } },
142
143 /* 16x8 vector, codes 00000xx ... 1xxxxxx */
144 { { 6, 5 }, { 6, 5 }, { 5, 5 }, { 5, 5 }, { 4, 4 }, { 4, 4 }, { 4, 4 }, { 4, 4 },
145 { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 2, 4 }, { 2, 4 }, { 2, 4 }, { 2, 4 },
146 { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 },
147 { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 },
148 {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 },
149 {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 },
150 {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 },
151 {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 } },
152
153 /* 16x16 vector, codes 000000x ... 1xxxxxx */
154 { { 6, 6 }, { 5, 6 }, { 4, 5 }, { 4, 5 }, { 3, 5 }, { 3, 5 }, { 2, 5 }, { 2, 5 },
155 { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 },
156 { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 },
157 { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 },
158 {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 },
159 {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 },
160 {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 },
161 {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 } }
162 };
163
164 /* vector codebook count tables, codes 0000000 ... 1111111 */
165 static vlc_code_t svq1_intra_vector_tables[6][128] = {
166 /* 4x2 vector, codes 00000xx ... 1xxxxxx */
167 { { 5, 5 }, { 5, 5 }, { 5, 5 }, { 5, 5 }, {-1, 5 }, {-1, 5 }, {-1, 5 }, {-1, 5 },
168 { 6, 4 }, { 6, 4 }, { 6, 4 }, { 6, 4 }, { 6, 4 }, { 6, 4 }, { 6, 4 }, { 6, 4 },
169 { 4, 4 }, { 4, 4 }, { 4, 4 }, { 4, 4 }, { 4, 4 }, { 4, 4 }, { 4, 4 }, { 4, 4 },
170 { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 },
171 { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 },
172 { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 },
173 { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 },
174 { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 },
175 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
176 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
177 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
178 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
179 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
180 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
181 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
182 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 } },
183
184 /* 4x4 vector, codes 0000xxx ... 11xxxxx */
185 { { 5, 4 }, { 5, 4 }, { 5, 4 }, { 5, 4 }, { 5, 4 }, { 5, 4 }, { 5, 4 }, { 5, 4 },
186 {-1, 4 }, {-1, 4 }, {-1, 4 }, {-1, 4 }, {-1, 4 }, {-1, 4 }, {-1, 4 }, {-1, 4 },
187 { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 },
188 { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 },
189 { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 },
190 { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 },
191 { 3, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 },
192 { 3, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 },
193 { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 },
194 { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 },
195 { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 },
196 { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 },
197 { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 },
198 { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 },
199 { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 },
200 { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 } },
201
202 /* 8x4 vector, codes 00000xx ... 1xxxxxx */
203 { { 2, 5 }, { 2, 5 }, { 2, 5 }, { 2, 5 }, {-1, 5 }, {-1, 5 }, {-1, 5 }, {-1, 5 },
204 { 6, 4 }, { 6, 4 }, { 6, 4 }, { 6, 4 }, { 6, 4 }, { 6, 4 }, { 6, 4 }, { 6, 4 },
205 { 5, 4 }, { 5, 4 }, { 5, 4 }, { 5, 4 }, { 5, 4 }, { 5, 4 }, { 5, 4 }, { 5, 4 },
206 { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 },
207 { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 },
208 { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 },
209 { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 },
210 { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 },
211 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
212 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
213 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
214 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
215 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
216 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
217 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
218 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 } },
219
220 /* 8x8 vector, codes 000000x ... 1xxxxxx */
221 { { 2, 6 }, { 2, 6 }, {-1, 6 }, {-1, 6 }, { 5, 5 }, { 5, 5 }, { 5, 5 }, { 5, 5 },
222 { 6, 4 }, { 6, 4 }, { 6, 4 }, { 6, 4 }, { 6, 4 }, { 6, 4 }, { 6, 4 }, { 6, 4 },
223 { 4, 4 }, { 4, 4 }, { 4, 4 }, { 4, 4 }, { 4, 4 }, { 4, 4 }, { 4, 4 }, { 4, 4 },
224 { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 },
225 { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 },
226 { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 },
227 { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 },
228 { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 },
229 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
230 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
231 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
232 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
233 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
234 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
235 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
236 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 } },
237
238 /* 16x8 vector, codes 000000x ... 1xxxxxx */
239 { { 4, 6 }, { 4, 6 }, {-1, 6 }, {-1, 6 }, { 5, 5 }, { 5, 5 }, { 5, 5 }, { 5, 5 },
240 { 3, 5 }, { 3, 5 }, { 3, 5 }, { 3, 5 }, { 2, 5 }, { 2, 5 }, { 2, 5 }, { 2, 5 },
241 { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 },
242 { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 },
243 { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 },
244 { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 },
245 { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 },
246 { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 },
247 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
248 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
249 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
250 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
251 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
252 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
253 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
254 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 } },
255
256 /* 16x16 vector, codes 0000000 ... 1xxxxxx */
257 { { 5, 7 }, {-1, 7 }, { 4, 6 }, { 4, 6 }, { 6, 5 }, { 6, 5 }, { 6, 5 }, { 6, 5 },
258 { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 },
259 { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 },
260 { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 },
261 { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 },
262 { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 },
263 { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 },
264 { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 },
265 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
266 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
267 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
268 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
269 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
270 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
271 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
272 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 } }
273 };
274
275 /* intra mean value, codes 00100101 ... 1111xxxx */
276 static vlc_code_t svq1_intra_mean_table_0[219] = {
277 {135, 8 }, {136, 8 }, {165, 8 },
278 {134, 8 }, {129, 8 }, {164, 8 }, {163, 8 }, {133, 8 }, {162, 8 }, {174, 8 }, {175, 8 },
279 {161, 8 }, {160, 8 }, {159, 8 }, {158, 8 }, {157, 8 }, {156, 8 }, {155, 8 }, {154, 8 },
280 {153, 8 }, {151, 8 }, {152, 8 }, {132, 8 }, {110, 8 }, {131, 8 }, {108, 8 }, {130, 8 },
281 {166, 8 }, {105, 8 }, {104, 8 }, {103, 8 }, {127, 8 }, {101, 8 }, {167, 8 }, {168, 8 },
282 { 98, 8 }, {128, 8 }, { 48, 8 }, { 95, 8 }, { 62, 8 }, { 93, 8 }, { 92, 8 }, { 91, 8 },
283 { 90, 8 }, { 89, 8 }, { 60, 8 }, { 87, 8 }, { 86, 8 }, { 57, 8 }, { 84, 8 }, { 83, 8 },
284 { 82, 8 }, { 81, 8 }, { 80, 8 }, { 79, 8 }, { 78, 8 }, { 77, 8 }, { 76, 8 }, { 75, 8 },
285 { 74, 8 }, { 73, 8 }, { 72, 8 }, { 71, 8 }, { 70, 8 }, { 69, 8 }, { 68, 8 }, { 67, 8 },
286 { 66, 8 }, { 65, 8 }, { 56, 8 }, { 63, 8 }, { 23, 8 }, { 61, 8 }, { 30, 8 }, { 59, 8 },
287 { 58, 8 }, { 52, 8 }, { 29, 8 }, { 55, 8 }, { 54, 8 }, { 53, 8 }, { 50, 8 }, { 51, 8 },
288 { 22, 8 }, { 49, 8 }, { 85, 7 }, { 85, 7 }, { 97, 7 }, { 97, 7 }, { 88, 7 }, { 88, 7 },
289 { 64, 7 }, { 64, 7 }, { 94, 7 }, { 94, 7 }, {106, 7 }, {106, 7 }, {107, 7 }, {107, 7 },
290 {109, 7 }, {109, 7 }, {111, 7 }, {111, 7 }, {112, 7 }, {112, 7 }, {113, 7 }, {113, 7 },
291 {114, 7 }, {114, 7 }, {115, 7 }, {115, 7 }, {116, 7 }, {116, 7 }, {117, 7 }, {117, 7 },
292 {118, 7 }, {118, 7 }, {119, 7 }, {119, 7 }, {120, 7 }, {120, 7 }, { 99, 7 }, { 99, 7 },
293 {102, 7 }, {102, 7 }, { 28, 7 }, { 28, 7 }, {100, 7 }, {100, 7 }, { 96, 7 }, { 96, 7 },
294 {139, 7 }, {139, 7 }, { 24, 7 }, { 24, 7 }, { 1, 7 }, { 1, 7 }, {138, 7 }, {138, 7 },
295 {121, 7 }, {121, 7 }, {122, 7 }, {122, 7 }, {123, 7 }, {123, 7 }, {124, 7 }, {124, 7 },
296 {125, 7 }, {125, 7 }, {126, 7 }, {126, 7 }, {137, 7 }, {137, 7 }, {140, 7 }, {140, 7 },
297 {150, 7 }, {150, 7 }, {144, 7 }, {144, 7 }, {141, 7 }, {141, 7 }, {142, 7 }, {142, 7 },
298 {143, 7 }, {143, 7 }, {145, 7 }, {145, 7 }, {147, 7 }, {147, 7 }, {146, 7 }, {146, 7 },
299 { 27, 6 }, { 27, 6 }, { 27, 6 }, { 27, 6 }, {148, 6 }, {148, 6 }, {148, 6 }, {148, 6 },
300 {149, 6 }, {149, 6 }, {149, 6 }, {149, 6 }, { 0, 6 }, { 0, 6 }, { 0, 6 }, { 0, 6 },
301 { 26, 4 }, { 26, 4 }, { 26, 4 }, { 26, 4 }, { 26, 4 }, { 26, 4 }, { 26, 4 }, { 26, 4 },
302 { 26, 4 }, { 26, 4 }, { 26, 4 }, { 26, 4 }, { 26, 4 }, { 26, 4 }, { 26, 4 }, { 26, 4 },
303 { 25, 4 }, { 25, 4 }, { 25, 4 }, { 25, 4 }, { 25, 4 }, { 25, 4 }, { 25, 4 }, { 25, 4 },
304 { 25, 4 }, { 25, 4 }, { 25, 4 }, { 25, 4 }, { 25, 4 }, { 25, 4 }, { 25, 4 }, { 25, 4 }
305 };
306
307 /* intra mean value, codes 0000001101 ... 001001001x */
308 static vlc_code_t svq1_intra_mean_table_1[135] = {
309 {218, 10}, {219, 10}, {220, 10},
310 {221, 10}, {222, 10}, {217, 10}, {230, 10}, {215, 10}, {208, 10}, {207, 10}, {206, 10},
311 {214, 10}, {204, 10}, {223, 10}, {224, 10}, {225, 10}, {226, 10}, {227, 10}, {228, 10},
312 {229, 10}, {213, 10}, {212, 10}, {231, 10}, {232, 10}, {211, 10}, {210, 10}, {236, 10},
313 {209, 10}, {216, 10}, {205, 10}, { 18, 10}, {186, 9 }, {186, 9 }, {185, 9 }, {185, 9 },
314 {184, 9 }, {184, 9 }, {182, 9 }, {182, 9 }, {183, 9 }, {183, 9 }, {180, 9 }, {180, 9 },
315 {181, 9 }, {181, 9 }, {178, 9 }, {178, 9 }, {187, 9 }, {187, 9 }, {176, 9 }, {176, 9 },
316 {188, 9 }, {188, 9 }, {179, 9 }, {179, 9 }, {173, 9 }, {173, 9 }, {172, 9 }, {172, 9 },
317 {171, 9 }, {171, 9 }, {170, 9 }, {170, 9 }, {169, 9 }, {169, 9 }, {189, 9 }, {189, 9 },
318 {190, 9 }, {190, 9 }, {191, 9 }, {191, 9 }, {192, 9 }, {192, 9 }, {193, 9 }, {193, 9 },
319 {194, 9 }, {194, 9 }, {195, 9 }, {195, 9 }, {196, 9 }, {196, 9 }, {197, 9 }, {197, 9 },
320 {198, 9 }, {198, 9 }, {200, 9 }, {200, 9 }, {201, 9 }, {201, 9 }, {202, 9 }, {202, 9 },
321 {203, 9 }, {203, 9 }, {199, 9 }, {199, 9 }, {177, 9 }, {177, 9 }, { 40, 9 }, { 40, 9 },
322 { 39, 9 }, { 39, 9 }, { 38, 9 }, { 38, 9 }, { 37, 9 }, { 37, 9 }, { 36, 9 }, { 36, 9 },
323 { 35, 9 }, { 35, 9 }, { 34, 9 }, { 34, 9 }, { 33, 9 }, { 33, 9 }, { 32, 9 }, { 32, 9 },
324 { 31, 9 }, { 31, 9 }, { 21, 9 }, { 21, 9 }, { 11, 9 }, { 11, 9 }, { 41, 9 }, { 41, 9 },
325 { 45, 9 }, { 45, 9 }, { 44, 9 }, { 44, 9 }, { 42, 9 }, { 42, 9 }, { 43, 9 }, { 43, 9 },
326 { 47, 9 }, { 47, 9 }, { 46, 9 }, { 46, 9 }
327 };
328
329 /* intra mean value, codes 00000000000001 ... 00000011001xxx */
330 static vlc_code_t svq1_intra_mean_table_2[207] = {
331 {255, 14}, { 14, 14}, { 13, 14}, { 17, 12}, { 17, 12}, { 17, 12}, { 17, 12},
332 {243, 11}, {243, 11}, {243, 11}, {243, 11}, {243, 11}, {243, 11}, {243, 11}, {243, 11},
333 {242, 11}, {242, 11}, {242, 11}, {242, 11}, {242, 11}, {242, 11}, {242, 11}, {242, 11},
334 {241, 11}, {241, 11}, {241, 11}, {241, 11}, {241, 11}, {241, 11}, {241, 11}, {241, 11},
335 {240, 11}, {240, 11}, {240, 11}, {240, 11}, {240, 11}, {240, 11}, {240, 11}, {240, 11},
336 {237, 11}, {237, 11}, {237, 11}, {237, 11}, {237, 11}, {237, 11}, {237, 11}, {237, 11},
337 {239, 11}, {239, 11}, {239, 11}, {239, 11}, {239, 11}, {239, 11}, {239, 11}, {239, 11},
338 {235, 11}, {235, 11}, {235, 11}, {235, 11}, {235, 11}, {235, 11}, {235, 11}, {235, 11},
339 {234, 11}, {234, 11}, {234, 11}, {234, 11}, {234, 11}, {234, 11}, {234, 11}, {234, 11},
340 {233, 11}, {233, 11}, {233, 11}, {233, 11}, {233, 11}, {233, 11}, {233, 11}, {233, 11},
341 {244, 11}, {244, 11}, {244, 11}, {244, 11}, {244, 11}, {244, 11}, {244, 11}, {244, 11},
342 {238, 11}, {238, 11}, {238, 11}, {238, 11}, {238, 11}, {238, 11}, {238, 11}, {238, 11},
343 { 20, 11}, { 20, 11}, { 20, 11}, { 20, 11}, { 20, 11}, { 20, 11}, { 20, 11}, { 20, 11},
344 {248, 11}, {248, 11}, {248, 11}, {248, 11}, {248, 11}, {248, 11}, {248, 11}, {248, 11},
345 {249, 11}, {249, 11}, {249, 11}, {249, 11}, {249, 11}, {249, 11}, {249, 11}, {249, 11},
346 {250, 11}, {250, 11}, {250, 11}, {250, 11}, {250, 11}, {250, 11}, {250, 11}, {250, 11},
347 {251, 11}, {251, 11}, {251, 11}, {251, 11}, {251, 11}, {251, 11}, {251, 11}, {251, 11},
348 {252, 11}, {252, 11}, {252, 11}, {252, 11}, {252, 11}, {252, 11}, {252, 11}, {252, 11},
349 {253, 11}, {253, 11}, {253, 11}, {253, 11}, {253, 11}, {253, 11}, {253, 11}, {253, 11},
350 {254, 11}, {254, 11}, {254, 11}, {254, 11}, {254, 11}, {254, 11}, {254, 11}, {254, 11},
351 { 12, 11}, { 12, 11}, { 12, 11}, { 12, 11}, { 12, 11}, { 12, 11}, { 12, 11}, { 12, 11},
352 { 10, 11}, { 10, 11}, { 10, 11}, { 10, 11}, { 10, 11}, { 10, 11}, { 10, 11}, { 10, 11},
353 {245, 11}, {245, 11}, {245, 11}, {245, 11}, {245, 11}, {245, 11}, {245, 11}, {245, 11},
354 {247, 11}, {247, 11}, {247, 11}, {247, 11}, {247, 11}, {247, 11}, {247, 11}, {247, 11},
355 { 19, 11}, { 19, 11}, { 19, 11}, { 19, 11}, { 19, 11}, { 19, 11}, { 19, 11}, { 19, 11},
356 {246, 11}, {246, 11}, {246, 11}, {246, 11}, {246, 11}, {246, 11}, {246, 11}, {246, 11}
357 };
358
359 /* intra mean value, codes 00000000000000000000 ... 000000000000001xxxxx */
360 static vlc_code_t svq1_intra_mean_table_3[64] = {
361 { 6, 20}, { 3, 20}, { 4, 20}, { 5, 20}, { 7, 20}, { 8, 20}, { 9, 19}, { 9, 19},
362 { 2, 17}, { 2, 17}, { 2, 17}, { 2, 17}, { 2, 17}, { 2, 17}, { 2, 17}, { 2, 17},
363 { 16, 16}, { 16, 16}, { 16, 16}, { 16, 16}, { 16, 16}, { 16, 16}, { 16, 16}, { 16, 16},
364 { 16, 16}, { 16, 16}, { 16, 16}, { 16, 16}, { 16, 16}, { 16, 16}, { 16, 16}, { 16, 16},
365 { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15},
366 { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15},
367 { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15},
368 { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15}
369 };
370
371 /* inter mean value, codes 00001011 ... 1xxxxxxx */
372 static vlc_code_t svq1_inter_mean_table_0[245] = {
373 { 10, 8 }, { 12, 8 }, { 11, 8 }, {-11, 8 }, {-12, 8 },
374 {-10, 8 }, { -9, 8 }, { -7, 7 }, { -7, 7 }, { -6, 7 }, { -6, 7 }, { 8, 7 }, { 8, 7 },
375 { -8, 7 }, { -8, 7 }, { 9, 7 }, { 9, 7 }, { 6, 7 }, { 6, 7 }, { 7, 7 }, { 7, 7 },
376 { -5, 6 }, { -5, 6 }, { -5, 6 }, { -5, 6 }, { -4, 6 }, { -4, 6 }, { -4, 6 }, { -4, 6 },
377 { 5, 6 }, { 5, 6 }, { 5, 6 }, { 5, 6 }, { 4, 6 }, { 4, 6 }, { 4, 6 }, { 4, 6 },
378 { 3, 5 }, { 3, 5 }, { 3, 5 }, { 3, 5 }, { 3, 5 }, { 3, 5 }, { 3, 5 }, { 3, 5 },
379 { 2, 5 }, { 2, 5 }, { 2, 5 }, { 2, 5 }, { 2, 5 }, { 2, 5 }, { 2, 5 }, { 2, 5 },
380 { -2, 5 }, { -2, 5 }, { -2, 5 }, { -2, 5 }, { -2, 5 }, { -2, 5 }, { -2, 5 }, { -2, 5 },
381 { -3, 5 }, { -3, 5 }, { -3, 5 }, { -3, 5 }, { -3, 5 }, { -3, 5 }, { -3, 5 }, { -3, 5 },
382 { -1, 4 }, { -1, 4 }, { -1, 4 }, { -1, 4 }, { -1, 4 }, { -1, 4 }, { -1, 4 }, { -1, 4 },
383 { -1, 4 }, { -1, 4 }, { -1, 4 }, { -1, 4 }, { -1, 4 }, { -1, 4 }, { -1, 4 }, { -1, 4 },
384 { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 },
385 { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 },
386 { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 },
387 { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 },
388 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
389 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
390 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
391 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
392 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
393 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
394 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
395 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
396 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
397 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
398 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
399 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
400 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
401 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
402 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
403 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }
404 };
405
406 /* inter mean value, codes 000000010010 ... 00001011xxxx */
407 static vlc_code_t svq1_inter_mean_table_1[158] = {
408 {-30, 12}, {-31, 12}, {-32, 12}, {-33, 12}, { 31, 12}, {-34, 12},
409 {-35, 12}, { 29, 12}, { 30, 12}, { 33, 12}, { 34, 12}, { 32, 12}, {-29, 11}, {-29, 11},
410 {-28, 11}, {-28, 11}, { 28, 11}, { 28, 11}, {-27, 11}, {-27, 11}, {-26, 11}, {-26, 11},
411 { 27, 11}, { 27, 11}, { 26, 11}, { 26, 11}, { 25, 11}, { 25, 11}, { 24, 11}, { 24, 11},
412 { 23, 11}, { 23, 11}, { 22, 11}, { 22, 11}, {-24, 11}, {-24, 11}, {-25, 11}, {-25, 11},
413 {-23, 10}, {-23, 10}, {-23, 10}, {-23, 10}, {-21, 10}, {-21, 10}, {-21, 10}, {-21, 10},
414 {-20, 10}, {-20, 10}, {-20, 10}, {-20, 10}, {-19, 10}, {-19, 10}, {-19, 10}, {-19, 10},
415 {-18, 10}, {-18, 10}, {-18, 10}, {-18, 10}, {-22, 10}, {-22, 10}, {-22, 10}, {-22, 10},
416 { 19, 10}, { 19, 10}, { 19, 10}, { 19, 10}, { 21, 10}, { 21, 10}, { 21, 10}, { 21, 10},
417 { 20, 10}, { 20, 10}, { 20, 10}, { 20, 10}, { 18, 10}, { 18, 10}, { 18, 10}, { 18, 10},
418 {-14, 9 }, {-14, 9 }, {-14, 9 }, {-14, 9 }, {-14, 9 }, {-14, 9 }, {-14, 9 }, {-14, 9 },
419 {-17, 9 }, {-17, 9 }, {-17, 9 }, {-17, 9 }, {-17, 9 }, {-17, 9 }, {-17, 9 }, {-17, 9 },
420 { 16, 9 }, { 16, 9 }, { 16, 9 }, { 16, 9 }, { 16, 9 }, { 16, 9 }, { 16, 9 }, { 16, 9 },
421 { 13, 9 }, { 13, 9 }, { 13, 9 }, { 13, 9 }, { 13, 9 }, { 13, 9 }, { 13, 9 }, { 13, 9 },
422 { 14, 9 }, { 14, 9 }, { 14, 9 }, { 14, 9 }, { 14, 9 }, { 14, 9 }, { 14, 9 }, { 14, 9 },
423 { 15, 9 }, { 15, 9 }, { 15, 9 }, { 15, 9 }, { 15, 9 }, { 15, 9 }, { 15, 9 }, { 15, 9 },
424 { 17, 9 }, { 17, 9 }, { 17, 9 }, { 17, 9 }, { 17, 9 }, { 17, 9 }, { 17, 9 }, { 17, 9 },
425 {-13, 9 }, {-13, 9 }, {-13, 9 }, {-13, 9 }, {-13, 9 }, {-13, 9 }, {-13, 9 }, {-13, 9 },
426 {-16, 9 }, {-16, 9 }, {-16, 9 }, {-16, 9 }, {-16, 9 }, {-16, 9 }, {-16, 9 }, {-16, 9 },
427 {-15, 9 }, {-15, 9 }, {-15, 9 }, {-15, 9 }, {-15, 9 }, {-15, 9 }, {-15, 9 }, {-15, 9 }
428 };
429
430 /* inter mean value, codes 000000000010111 ... 0000000100011xx */
431 static vlc_code_t svq1_inter_mean_table_2[121] = {
432 { 61, 15},
433 { 52, 15}, { 58, 15}, {-56, 15}, {-57, 15}, { 59, 15}, {-55, 15}, { 60, 15}, {-54, 15},
434 { 53, 15}, {-62, 15}, {-60, 15}, {-59, 15}, {-58, 15}, { 57, 15}, { 56, 15}, {-53, 15},
435 { 55, 15}, { 54, 15}, { 50, 14}, { 50, 14}, { 45, 14}, { 45, 14}, {-52, 14}, {-52, 14},
436 {-51, 14}, {-51, 14}, {-50, 14}, {-50, 14}, { 46, 14}, { 46, 14}, {-49, 14}, {-49, 14},
437 {-48, 14}, {-48, 14}, { 48, 14}, { 48, 14}, {-47, 14}, {-47, 14}, { 49, 14}, { 49, 14},
438 {-45, 14}, {-45, 14}, {-44, 14}, {-44, 14}, { 47, 14}, { 47, 14}, { 51, 14}, { 51, 14},
439 { 44, 14}, { 44, 14}, {-46, 14}, {-46, 14}, {-43, 13}, {-43, 13}, {-43, 13}, {-43, 13},
440 {-42, 13}, {-42, 13}, {-42, 13}, {-42, 13}, {-41, 13}, {-41, 13}, {-41, 13}, {-41, 13},
441 {-40, 13}, {-40, 13}, {-40, 13}, {-40, 13}, {-39, 13}, {-39, 13}, {-39, 13}, {-39, 13},
442 {-38, 13}, {-38, 13}, {-38, 13}, {-38, 13}, {-37, 13}, {-37, 13}, {-37, 13}, {-37, 13},
443 {-36, 13}, {-36, 13}, {-36, 13}, {-36, 13}, { 42, 13}, { 42, 13}, { 42, 13}, { 42, 13},
444 { 36, 13}, { 36, 13}, { 36, 13}, { 36, 13}, { 43, 13}, { 43, 13}, { 43, 13}, { 43, 13},
445 { 41, 13}, { 41, 13}, { 41, 13}, { 41, 13}, { 40, 13}, { 40, 13}, { 40, 13}, { 40, 13},
446 { 35, 13}, { 35, 13}, { 35, 13}, { 35, 13}, { 39, 13}, { 39, 13}, { 39, 13}, { 39, 13},
447 { 38, 13}, { 38, 13}, { 38, 13}, { 38, 13}, { 37, 13}, { 37, 13}, { 37, 13}, { 37, 13}
448 };
449
450 /* inter mean value, codes 000000000000100101 ... 0000000000101101xx */
451 static vlc_code_t svq1_inter_mean_table_3[147] = {
452 {111, 18}, {102, 18}, { 99, 18},
453 {-86, 18}, { 97, 18}, {-97, 18}, { 96, 18}, {-95, 18}, {-76, 18}, {-77, 18}, {-78, 18},
454 {-85, 18}, {-80, 18}, {-81, 18}, { 89, 18}, { 90, 18}, {-84, 18}, {-89, 18}, { 80, 18},
455 {-90, 18}, {-88, 18}, { 92, 18}, { 93, 18}, { 95, 18}, {-109,18}, {-79, 17}, {-79, 17},
456 {-83, 17}, {-83, 17}, {-75, 17}, {-75, 17}, {-74, 17}, {-74, 17}, {-73, 17}, {-73, 17},
457 {-72, 17}, {-72, 17}, { 87, 17}, { 87, 17}, { 86, 17}, { 86, 17}, { 75, 17}, { 75, 17},
458 { 85, 17}, { 85, 17}, { 84, 17}, { 84, 17}, { 81, 17}, { 81, 17}, { 79, 17}, { 79, 17},
459 { 74, 17}, { 74, 17}, { 72, 17}, { 72, 17}, { 82, 17}, { 82, 17}, { 78, 17}, { 78, 17},
460 { 83, 17}, { 83, 17}, { 76, 17}, { 76, 17}, { 73, 17}, { 73, 17}, { 77, 17}, { 77, 17},
461 { 70, 16}, { 70, 16}, { 70, 16}, { 70, 16}, { 69, 16}, { 69, 16}, { 69, 16}, { 69, 16},
462 { 64, 16}, { 64, 16}, { 64, 16}, { 64, 16}, {-68, 16}, {-68, 16}, {-68, 16}, {-68, 16},
463 {-66, 16}, {-66, 16}, {-66, 16}, {-66, 16}, { 68, 16}, { 68, 16}, { 68, 16}, { 68, 16},
464 {-69, 16}, {-69, 16}, {-69, 16}, {-69, 16}, { 65, 16}, { 65, 16}, { 65, 16}, { 65, 16},
465 { 71, 16}, { 71, 16}, { 71, 16}, { 71, 16}, {-70, 16}, {-70, 16}, {-70, 16}, {-70, 16},
466 {-65, 16}, {-65, 16}, {-65, 16}, {-65, 16}, {-67, 16}, {-67, 16}, {-67, 16}, {-67, 16},
467 {-63, 16}, {-63, 16}, {-63, 16}, {-63, 16}, {-71, 16}, {-71, 16}, {-71, 16}, {-71, 16},
468 { 67, 16}, { 67, 16}, { 67, 16}, { 67, 16}, {-61, 16}, {-61, 16}, {-61, 16}, {-61, 16},
469 {-64, 16}, {-64, 16}, {-64, 16}, {-64, 16}, { 63, 16}, { 63, 16}, { 63, 16}, { 63, 16},
470 { 62, 16}, { 62, 16}, { 62, 16}, { 62, 16}, { 66, 16}, { 66, 16}, { 66, 16}, { 66, 16}
471 };
472
473 /* inter mean value, codes 00000000000001001001 ... 0000000000001001001x */
474 static vlc_code_t svq1_inter_mean_table_4[75] = {
475 {142, 20}, {135, 20}, {125, 20}, {123, 20}, {122, 20}, {119, 20}, {117, 20},
476 {113, 20}, {104, 20}, {103, 20}, {-120,20}, {-114,20}, {-108,20}, {-104,20}, {-102,20},
477 {-101,20}, {-93, 20}, {-91, 19}, {-91, 19}, {-96, 19}, {-96, 19}, { 88, 19}, { 88, 19},
478 { 91, 19}, { 91, 19}, { 94, 19}, { 94, 19}, {121, 19}, {121, 19}, {120, 19}, {120, 19},
479 {-110,19}, {-110,19}, {118, 19}, {118, 19}, {115, 19}, {115, 19}, {114, 19}, {114, 19},
480 {112, 19}, {112, 19}, {107, 19}, {107, 19}, {110, 19}, {110, 19}, {109, 19}, {109, 19},
481 {108, 19}, {108, 19}, {-103,19}, {-103,19}, {106, 19}, {106, 19}, {105, 19}, {105, 19},
482 {-100,19}, {-100,19}, {101, 19}, {101, 19}, {100, 19}, {100, 19}, {-99, 19}, {-99, 19},
483 {-82, 19}, {-82, 19}, {-87, 19}, {-87, 19}, {-94, 19}, {-94, 19}, {-98, 19}, {-98, 19},
484 { 98, 19}, { 98, 19}, {-92, 19}, {-92, 19}
485 };
486
487 /* inter mean value, codes 0000000000000000000000 ... 000000000000010010001x */
488 static vlc_code_t svq1_inter_mean_table_5[292] = {
489 {255, 22}, {254, 22}, {253, 22}, {252, 22}, {251, 22}, {250, 22}, {249, 22}, {248, 22},
490 {247, 22}, {246, 22}, {245, 22}, {244, 22}, {243, 22}, {242, 22}, {241, 22}, {240, 22},
491 {239, 22}, {238, 22}, {237, 22}, {236, 22}, {235, 22}, {234, 22}, {233, 22}, {232, 22},
492 {231, 22}, {230, 22}, {229, 22}, {228, 22}, {227, 22}, {226, 22}, {225, 22}, {224, 22},
493 {223, 22}, {222, 22}, {221, 22}, {220, 22}, {219, 22}, {218, 22}, {217, 22}, {216, 22},
494 {215, 22}, {214, 22}, {213, 22}, {212, 22}, {211, 22}, {210, 22}, {209, 22}, {208, 22},
495 {207, 22}, {206, 22}, {205, 22}, {204, 22}, {203, 22}, {202, 22}, {201, 22}, {200, 22},
496 {199, 22}, {198, 22}, {197, 22}, {196, 22}, {195, 22}, {194, 22}, {193, 22}, {192, 22},
497 {191, 22}, {190, 22}, {189, 22}, {188, 22}, {187, 22}, {186, 22}, {185, 22}, {184, 22},
498 {183, 22}, {182, 22}, {181, 22}, {180, 22}, {179, 22}, {178, 22}, {177, 22}, {176, 22},
499 {175, 22}, {174, 22}, {173, 22}, {172, 22}, {171, 22}, {170, 22}, {169, 22}, {168, 22},
500 {167, 22}, {166, 22}, {-256,22}, {164, 22}, {-211,22}, {162, 22}, {161, 22}, {160, 22},
501 {-210,22}, {-168,22}, {157, 22}, {156, 22}, {155, 22}, {154, 22}, {153, 22}, {152, 22},
502 {151, 22}, {150, 22}, {149, 22}, {148, 22}, {147, 22}, {146, 22}, {145, 22}, {144, 22},
503 {143, 22}, {-208,22}, {141, 22}, {140, 22}, {139, 22}, {-200,22}, {137, 22}, {136, 22},
504 {-198,22}, {134, 22}, {133, 22}, {-196,22}, {-201,22}, {130, 22}, {129, 22}, {128, 22},
505 {127, 22}, {126, 22}, {-195,22}, {124, 22}, {-167,22}, {-166,22}, {-165,22}, {-164,22},
506 {-163,22}, {-162,22}, {-161,22}, {-180,22}, {-160,22}, {-159,22}, {-158,22}, {-157,22},
507 {-156,22}, {-155,22}, {-154,22}, {-153,22}, {-152,22}, {-151,22}, {-150,22}, {-149,22},
508 {-148,22}, {-147,22}, {-146,22}, {-145,22}, {-144,22}, {-143,22}, {-142,22}, {-141,22},
509 {-140,22}, {-139,22}, {-138,22}, {-137,22}, {-136,22}, {-135,22}, {-134,22}, {-133,22},
510 {-132,22}, {-131,22}, {-130,22}, {-129,22}, {-126,22}, {-125,22}, {-124,22}, {-123,22},
511 {-122,22}, {-121,22}, {-118,22}, {-116,22}, {-115,22}, {-113,22}, {-112,22}, {-107,22},
512 {-106,22}, {-169,22}, {-170,22}, {-171,22}, {-172,22}, {-173,22}, {-174,22}, {-175,22},
513 {-176,22}, {-177,22}, {-178,22}, {-187,22}, {-179,22}, {-181,22}, {-182,22}, {-183,22},
514 {-184,22}, {-185,22}, {-186,22}, {-235,22}, {-188,22}, {-189,22}, {-190,22}, {-191,22},
515 {-192,22}, {-193,22}, {-194,22}, {-197,22}, {-255,22}, {-254,22}, {-253,22}, {-252,22},
516 {-251,22}, {-250,22}, {-249,22}, {-248,22}, {-247,22}, {-246,22}, {-245,22}, {-244,22},
517 {-243,22}, {-242,22}, {-241,22}, {-240,22}, {-239,22}, {-238,22}, {-237,22}, {-232,22},
518 {-236,22}, {-234,22}, {-233,22}, {-217,22}, {-231,22}, {-230,22}, {-229,22}, {-228,22},
519 {-227,22}, {-226,22}, {-225,22}, {-224,22}, {-223,22}, {-222,22}, {-221,22}, {-220,22},
520 {-219,22}, {-216,22}, {-202,22}, {-205,22}, {-215,22}, {-214,22}, {-213,22}, {-204,22},
521 {-212,22}, {-209,22}, {-218,22}, {-199,22}, {-207,22}, {-206,22}, {165, 21}, {165, 21},
522 {131, 21}, {131, 21}, {163, 21}, {163, 21}, {-203,21}, {-203,21}, {116, 21}, {116, 21},
523 {159, 21}, {159, 21}, {138, 21}, {138, 21}, {158, 21}, {158, 21}, {-105,21}, {-105,21},
524 {-111,21}, {-111,21}, {132, 21}, {132, 21}, {128, 21}, {128, 21}, {-127,21}, {-127,21},
525 {-119,21}, {-119,21}, {-117,21}, {-117,21}
526 };
527
528 #define SVQ1_PROCESS_VECTOR()\
529 for (; level > 0; i++) {\
530 /* process next depth */\
531 if (i == m) {\
532 m = n;\
533 if (--level == 0)\
534 break;\
535 }\
536 /* divide block if next bit set */\
537 if (get_bits (bitbuf, 1) == 0)\
538 break;\
539 /* add child nodes */\
540 list[n++] = list[i];\
541 list[n++] = list[i] + (((level & 1) ? pitch : 1) << ((level / 2) + 1));\
542 }
543
544 #define SVQ1_ADD_CODEBOOK()\
545 /* add codebook entries to vector */\
546 for (j=0; j < stages; j++) {\
547 n3 = codebook[entries[j]] ^ 0x80808080;\
548 n1 += ((n3 & 0xFF00FF00) >> 8);\
549 n2 += (n3 & 0x00FF00FF);\
550 }\
551 \
552 /* clip to [0..255] */\
553 if (n1 & 0xFF00FF00) {\
554 n3 = ((( n1 >> 15) & 0x00010001) | 0x01000100) - 0x00010001;\
555 n1 += 0x7F007F00;\
556 n1 |= (((~n1 >> 15) & 0x00010001) | 0x01000100) - 0x00010001;\
557 n1 &= (n3 & 0x00FF00FF);\
558 }\
559 \
560 if (n2 & 0xFF00FF00) {\
561 n3 = ((( n2 >> 15) & 0x00010001) | 0x01000100) - 0x00010001;\
562 n2 += 0x7F007F00;\
563 n2 |= (((~n2 >> 15) & 0x00010001) | 0x01000100) - 0x00010001;\
564 n2 &= (n3 & 0x00FF00FF);\
565 }
566
567 #define SVQ1_DO_CODEBOOK_INTRA()\
568 for (y=0; y < height; y++) {\
569 for (x=0; x < (width / 4); x++, codebook++) {\
570 n1 = n4;\
571 n2 = n4;\
572 SVQ1_ADD_CODEBOOK()\
573 /* store result */\
574 dst[x] = (n1 << 8) | n2;\
575 }\
576 dst += (pitch / 4);\
577 }
578
579 #define SVQ1_DO_CODEBOOK_NONINTRA()\
580 for (y=0; y < height; y++) {\
581 for (x=0; x < (width / 4); x++, codebook++) {\
582 n3 = dst[x];\
583 /* add mean value to vector */\
584 n1 = ((n3 & 0xFF00FF00) >> 8) + n4;\
585 n2 = (n3 & 0x00FF00FF) + n4;\
586 SVQ1_ADD_CODEBOOK()\
587 /* store result */\
588 dst[x] = (n1 << 8) | n2;\
589 }\
590 dst += (pitch / 4);\
591 }
592
593 #define SVQ1_CALC_CODEBOOK_ENTRIES(cbook)\
594 codebook = (const uint32_t *) cbook[level];\
595 bit_cache = get_bits (bitbuf, 4*stages);\
596 /* calculate codebook entries for this vector */\
597 for (j=0; j < stages; j++) {\
598 entries[j] = (((bit_cache >> (4*(stages - j - 1))) & 0xF) + 16*j) << (level + 1);\
599 }\
600 mean -= (stages * 128);\
601 n4 = ((mean + (mean >> 31)) << 16) | (mean & 0xFFFF);
602
603 static int svq1_decode_block_intra (bit_buffer_t *bitbuf, uint8_t *pixels, int pitch ) {
604 uint32_t bit_cache;
605 vlc_code_t *vlc;
606 uint8_t *list[63];
607 uint32_t *dst;
608 const uint32_t *codebook;
609 int entries[6];
610 int i, j, m, n;
611 int mean, stages;
612 unsigned x, y, width, height, level;
613 uint32_t n1, n2, n3, n4;
614
615 /* initialize list for breadth first processing of vectors */
616 list[0] = pixels;
617
618 /* recursively process vector */
619 for (i=0, m=1, n=1, level=5; i < n; i++) {
620 SVQ1_PROCESS_VECTOR();
621
622 /* destination address and vector size */
623 dst = (uint32_t *) list[i];
624 width = 1 << ((4 + level) /2);
625 height = 1 << ((3 + level) /2);
626
627 /* get number of stages (-1 skips vector, 0 for mean only) */
628 bit_cache = get_bit_cache (bitbuf);
629
630 vlc = &svq1_intra_vector_tables[level][bit_cache >> (32 - 7)];
631
632 /* flush bits */
633 stages = vlc->value;
634 skip_bits(bitbuf,vlc->length);
635
636 if (stages == -1) {
637 for (y=0; y < height; y++) {
638 memset (&dst[y*(pitch / 4)], 0, width);
639 }
640 continue; /* skip vector */
641 }
642
643 if ((stages > 0) && (level >= 4)) {
644 #ifdef DEBUG_SVQ1
645 printf("Error (svq1_decode_block_intra): invalid vector: stages=%i level=%i\n",stages,level);
646 #endif
647 return -1; /* invalid vector */
648 }
649
650 /* get mean value for vector */
651 bit_cache = get_bit_cache (bitbuf);
652
653 if (bit_cache >= 0x25000000)
654 vlc = &svq1_intra_mean_table_0[(bit_cache >> (32 - 8)) - 37];
655 else if (bit_cache >= 0x03400000)
656 vlc = &svq1_intra_mean_table_1[(bit_cache >> (32 - 10)) - 13];
657 else if (bit_cache >= 0x00040000)
658 vlc = &svq1_intra_mean_table_2[(bit_cache >> (32 - 14)) - 1];
659 else
660 vlc = &svq1_intra_mean_table_3[bit_cache >> (32 - 20)];
661
662 /* flush bits */
663 mean = vlc->value;
664 skip_bits(bitbuf,vlc->length);
665
666 if (stages == 0) {
667 for (y=0; y < height; y++) {
668 memset (&dst[y*(pitch / 4)], mean, width);
669 }
670 } else {
671 SVQ1_CALC_CODEBOOK_ENTRIES(svq1_intra_codebooks);
672 SVQ1_DO_CODEBOOK_INTRA()
673 }
674 }
675
676 return 0;
677 }
678
679 static int svq1_decode_block_non_intra (bit_buffer_t *bitbuf, uint8_t *pixels, int pitch ) {
680 uint32_t bit_cache;
681 vlc_code_t *vlc;
682 uint8_t *list[63];
683 uint32_t *dst;
684 const uint32_t *codebook;
685 int entries[6];
686 int i, j, m, n;
687 int mean, stages;
688 int x, y, width, height, level;
689 uint32_t n1, n2, n3, n4;
690
691 /* initialize list for breadth first processing of vectors */
692 list[0] = pixels;
693
694 /* recursively process vector */
695 for (i=0, m=1, n=1, level=5; i < n; i++) {
696 SVQ1_PROCESS_VECTOR();
697
698 /* destination address and vector size */
699 dst = (uint32_t *) list[i];
700 width = 1 << ((4 + level) /2);
701 height = 1 << ((3 + level) /2);
702
703 /* get number of stages (-1 skips vector, 0 for mean only) */
704 bit_cache = get_bit_cache (bitbuf);
705
706 vlc = &svq1_inter_vector_tables[level][bit_cache >> (32 - 6)];
707
708 /* flush bits */
709 stages = vlc->value;
710 skip_bits(bitbuf,vlc->length);
711
712 if (stages == -1) continue; /* skip vector */
713
714 if ((stages > 0) && (level >= 4)) {
715 #ifdef DEBUG_SVQ1
716 printf("Error (svq1_decode_block_non_intra): invalid vector: stages=%i level=%i\n",stages,level);
717 #endif
718 return -1; /* invalid vector */
719 }
720
721 /* get mean value for vector */
722 bit_cache = get_bit_cache (bitbuf);
723
724 if (bit_cache >= 0x0B000000)
725 vlc = &svq1_inter_mean_table_0[(bit_cache >> (32 - 8)) - 11];
726 else if (bit_cache >= 0x01200000)
727 vlc = &svq1_inter_mean_table_1[(bit_cache >> (32 - 12)) - 18];
728 else if (bit_cache >= 0x002E0000)
729 vlc = &svq1_inter_mean_table_2[(bit_cache >> (32 - 15)) - 23];
730 else if (bit_cache >= 0x00094000)
731 vlc = &svq1_inter_mean_table_3[(bit_cache >> (32 - 18)) - 37];
732 else if (bit_cache >= 0x00049000)
733 vlc = &svq1_inter_mean_table_4[(bit_cache >> (32 - 20)) - 73];
734 else
735 vlc = &svq1_inter_mean_table_5[bit_cache >> (32 - 22)];
736
737 /* flush bits */
738 mean = vlc->value;
739 skip_bits(bitbuf,vlc->length);
740
741 SVQ1_CALC_CODEBOOK_ENTRIES(svq1_inter_codebooks);
742 SVQ1_DO_CODEBOOK_NONINTRA()
743 }
744 return 0;
745 }
746
747 static int svq1_decode_motion_vector (bit_buffer_t *bitbuf, svq1_pmv_t *mv, svq1_pmv_t **pmv) {
748 uint32_t bit_cache;
749 vlc_code_t *vlc;
750 int diff, sign;
751 int i;
752
753 for (i=0; i < 2; i++) {
754
755 /* get motion code */
756 bit_cache = get_bit_cache (bitbuf);
757
758 if (!(bit_cache & 0xFFE00000))
759 return -1; /* invalid vlc code */
760
761 if (bit_cache & 0x80000000) {
762 diff = 0;
763
764 /* flush bit */
765 skip_bits(bitbuf,1);
766
767 } else {
768 if (bit_cache >= 0x06000000) {
769 vlc = &svq1_motion_table_0[(bit_cache >> (32 - 7)) - 3];
770 } else {
771 vlc = &svq1_motion_table_1[(bit_cache >> (32 - 12)) - 2];
772 }
773
774 /* decode motion vector differential */
775 sign = (int) (bit_cache << (vlc->length - 1)) >> 31;
776 diff = (vlc->value ^ sign) - sign;
777
778 /* flush bits */
779 skip_bits(bitbuf,vlc->length);
780 }
781
782 /* add median of motion vector predictors and clip result */
783 if (i == 1)
784 mv->y = ((diff + MEDIAN(pmv[0]->y, pmv[1]->y, pmv[2]->y)) << 26) >> 26;
785 else
786 mv->x = ((diff + MEDIAN(pmv[0]->x, pmv[1]->x, pmv[2]->x)) << 26) >> 26;
787 }
788
789 return 0;
790 }
791
792 static void svq1_skip_block (uint8_t *current, uint8_t *previous, int pitch, int x, int y) {
793 uint8_t *src;
794 uint8_t *dst;
795 int i;
796
797 src = &previous[x + y*pitch];
798 dst = current;
799
800 for (i=0; i < 16; i++) {
801 memcpy (dst, src, 16);
802 src += pitch;
803 dst += pitch;
804 }
805 }
806
807 static int svq1_motion_inter_block (MpegEncContext *s, bit_buffer_t *bitbuf,
808 uint8_t *current, uint8_t *previous, int pitch,
809 svq1_pmv_t *motion, int x, int y) {
810 uint8_t *src;
811 uint8_t *dst;
812 svq1_pmv_t mv;
813 svq1_pmv_t *pmv[3];
814 int result;
815
816 /* predict and decode motion vector */
817 pmv[0] = &motion[0];
818 if (y == 0) {
819 pmv[1] =
820 pmv[2] = pmv[0];
821 }
822 else {
823 pmv[1] = &motion[(x / 8) + 2];
824 pmv[2] = &motion[(x / 8) + 4];
825 }
826
827 result = svq1_decode_motion_vector (bitbuf, &mv, pmv);
828
829 if (result != 0)
830 return result;
831
832 motion[0].x =
833 motion[(x / 8) + 2].x =
834 motion[(x / 8) + 3].x = mv.x;
835 motion[0].y =
836 motion[(x / 8) + 2].y =
837 motion[(x / 8) + 3].y = mv.y;
838
839 src = &previous[(x + (mv.x >> 1)) + (y + (mv.y >> 1))*pitch];
840 dst = current;
841
842 s->dsp.put_pixels_tab[0][((mv.y & 1) << 1) | (mv.x & 1)](dst,src,pitch,16);
843
844 return 0;
845 }
846
847 static int svq1_motion_inter_4v_block (MpegEncContext *s, bit_buffer_t *bitbuf,
848 uint8_t *current, uint8_t *previous, int pitch,
849 svq1_pmv_t *motion,int x, int y) {
850 uint8_t *src;
851 uint8_t *dst;
852 svq1_pmv_t mv;
853 svq1_pmv_t *pmv[4];
854 int i, result;
855
856 /* predict and decode motion vector (0) */
857 pmv[0] = &motion[0];
858 if (y == 0) {
859 pmv[1] =
860 pmv[2] = pmv[0];
861 }
862 else {
863 pmv[1] = &motion[(x / 8) + 2];
864 pmv[2] = &motion[(x / 8) + 4];
865 }
866
867 result = svq1_decode_motion_vector (bitbuf, &mv, pmv);
868
869 if (result != 0)
870 return result;
871
872 /* predict and decode motion vector (1) */
873 pmv[0] = &mv;
874 if (y == 0) {
875 pmv[1] =
876 pmv[2] = pmv[0];
877 }
878 else {
879 pmv[1] = &motion[(x / 8) + 3];
880 }
881 result = svq1_decode_motion_vector (bitbuf, &motion[0], pmv);
882
883 if (result != 0)
884 return result;
885
886 /* predict and decode motion vector (2) */
887 pmv[1] = &motion[0];
888 pmv[2] = &motion[(x / 8) + 1];
889
890 result = svq1_decode_motion_vector (bitbuf, &motion[(x / 8) + 2], pmv);
891
892 if (result != 0)
893 return result;
894
895 /* predict and decode motion vector (3) */
896 pmv[2] = &motion[(x / 8) + 2];
897 pmv[3] = &motion[(x / 8) + 3];
898
899 result = svq1_decode_motion_vector (bitbuf, pmv[3], pmv);
900
901 if (result != 0)
902 return result;
903
904 /* form predictions */
905 for (i=0; i < 4; i++) {
906 src = &previous[(x + (pmv[i]->x >> 1)) + (y + (pmv[i]->y >> 1))*pitch];
907 dst = current;
908
909 s->dsp.put_pixels_tab[1][((pmv[i]->y & 1) << 1) | (pmv[i]->x & 1)](dst,src,pitch,8);
910
911 /* select next block */
912 if (i & 1) {
913 current += 8*(pitch - 1);
914 previous += 8*(pitch - 1);
915 } else {
916 current += 8;
917 previous += 8;
918 }
919 }
920
921 return 0;
922 }
923
924 static int svq1_decode_delta_block (MpegEncContext *s, bit_buffer_t *bitbuf,
925 uint8_t *current, uint8_t *previous, int pitch,
926 svq1_pmv_t *motion, int x, int y) {
927 uint32_t bit_cache;
928 uint32_t block_type;
929 int result = 0;
930
931 /* get block type */
932 bit_cache = get_bit_cache (bitbuf);
933
934 bit_cache >>= (32 - 3);
935 block_type = svq1_block_type_table[bit_cache].value;
936 skip_bits(bitbuf,svq1_block_type_table[bit_cache].length);
937
938 /* reset motion vectors */
939 if (block_type == SVQ1_BLOCK_SKIP || block_type == SVQ1_BLOCK_INTRA) {
940 motion[0].x =
941 motion[0].y =
942 motion[(x / 8) + 2].x =
943 motion[(x / 8) + 2].y =
944 motion[(x / 8) + 3].x =
945 motion[(x / 8) + 3].y = 0;
946 }
947
948 switch (block_type) {
949 case SVQ1_BLOCK_SKIP:
950 svq1_skip_block (current, previous, pitch, x, y);
951 break;
952
953 case SVQ1_BLOCK_INTER:
954 result = svq1_motion_inter_block (s, bitbuf, current, previous, pitch, motion, x, y);
955
956 if (result != 0)
957 {
958 #ifdef DEBUG_SVQ1
959 printf("Error in svq1_motion_inter_block %i\n",result);
960 #endif
961 break;
962 }
963 result = svq1_decode_block_non_intra (bitbuf, current, pitch);
964 break;
965
966 case SVQ1_BLOCK_INTER_4V:
967 result = svq1_motion_inter_4v_block (s, bitbuf, current, previous, pitch, motion, x, y);
968
969 if (result != 0)
970 {
971 #ifdef DEBUG_SVQ1
972 printf("Error in svq1_motion_inter_4v_block %i\n",result);
973 #endif
974 break;
975 }
976 result = svq1_decode_block_non_intra (bitbuf, current, pitch);
977 break;
978
979 case SVQ1_BLOCK_INTRA:
980 result = svq1_decode_block_intra (bitbuf, current, pitch);
981 break;
982 }
983
984 return result;
985 }
986
987 /* standard video sizes */
988 static struct { int width; int height; } svq1_frame_size_table[8] = {
989 { 160, 120 }, { 128, 96 }, { 176, 144 }, { 352, 288 },
990 { 704, 576 }, { 240, 180 }, { 320, 240 }, { -1, -1 }
991 };
992
993 static int svq1_decode_frame_header (bit_buffer_t *bitbuf,MpegEncContext *s) {
994 int frame_size_code;
995
996 /* unknown field */
997 get_bits (bitbuf, 8);
998
999 /* frame type */
1000 s->pict_type= get_bits (bitbuf, 2)+1;
1001 if(s->pict_type==4)
1002 return -1;
1003
1004 if (s->pict_type == I_TYPE) {
1005
1006 /* unknown fields */
1007 if (s->f_code == 0x50 || s->f_code == 0x60) {
1008 get_bits (bitbuf, 16);
1009 }
1010
1011 if ((s->f_code ^ 0x10) >= 0x50) {
1012 skip_bits(bitbuf,8*get_bits (bitbuf, 8));
1013 }
1014
1015 get_bits (bitbuf, 2);
1016 get_bits (bitbuf, 2);
1017 get_bits (bitbuf, 1);
1018
1019 /* load frame size */
1020 frame_size_code = get_bits (bitbuf, 3);
1021
1022 if (frame_size_code == 7) {
1023 /* load width, height (12 bits each) */
1024 s->width = get_bits (bitbuf, 12);
1025 s->height = get_bits (bitbuf, 12);
1026
1027 if (!s->width || !s->height)
1028 return -1;
1029 } else {
1030 /* get width, height from table */
1031 s->width = svq1_frame_size_table[frame_size_code].width;
1032 s->height = svq1_frame_size_table[frame_size_code].height;
1033 }
1034 }
1035
1036 /* unknown fields */
1037 if (get_bits (bitbuf, 1) == 1) {
1038 get_bits (bitbuf, 1);
1039 get_bits (bitbuf, 1);
1040
1041 if (get_bits (bitbuf, 2) != 0)
1042 return -1;
1043 }
1044
1045 if (get_bits (bitbuf, 1) == 1) {
1046 get_bits (bitbuf, 1);
1047 get_bits (bitbuf, 4);
1048 get_bits (bitbuf, 1);
1049 get_bits (bitbuf, 2);
1050
1051 while (get_bits (bitbuf, 1) == 1) {
1052 get_bits (bitbuf, 8);
1053 }
1054 }
1055
1056 return 0;
1057 }
1058
1059 static int svq1_decode_frame(AVCodecContext *avctx,
1060 void *data, int *data_size,
1061 UINT8 *buf, int buf_size)
1062 {
1063 MpegEncContext *s=avctx->priv_data;
1064 uint8_t *current, *previous;
1065 int result, i, x, y, width, height;
1066 AVPicture *pict = data;
1067
1068 /* initialize bit buffer */
1069 init_get_bits(&s->gb,buf,buf_size);
1070
1071 /* decode frame header */
1072 s->f_code = get_bits (&s->gb, 22);
1073
1074 if ((s->f_code & ~0x70) || !(s->f_code & 0x60))
1075 return -1;
1076
1077 /* swap some header bytes (why?) */
1078 if (s->f_code != 0x20) {
1079 uint32_t *src = (uint32_t *) (buf + 4);
1080
1081 for (i=0; i < 4; i++) {
1082 src[i] = ((src[i] << 16) | (src[i] >> 16)) ^ src[7 - i];
1083 }
1084 }
1085
1086 result = svq1_decode_frame_header (&s->gb, s);
1087
1088 if(MPV_frame_start(s, avctx) < 0)
1089 return -1;
1090
1091 if (result != 0)
1092 {
1093 #ifdef DEBUG_SVQ1
1094 printf("Error in svq1_decode_frame_header %i\n",result);
1095 #endif
1096 return result;
1097 }
1098
1099 if(avctx->hurry_up && s->pict_type==B_TYPE) return buf_size;
1100
1101 /* decode y, u and v components */
1102 for (i=0; i < 3; i++) {
1103 int linesize;
1104 if (i == 0) {
1105 width = (s->width+15)&~15;
1106 height = (s->height+15)&~15;
1107 linesize= s->linesize;
1108 } else {
1109 if(s->flags&CODEC_FLAG_GRAY) break;
1110 width = (s->width/4+15)&~15;
1111 height = (s->height/4+15)&~15;
1112 linesize= s->uvlinesize;
1113 }
1114
1115 current = s->current_picture[i];
1116
1117 if(s->pict_type==B_TYPE){
1118 previous = s->next_picture[i];
1119 }else{
1120 previous = s->last_picture[i];
1121 }
1122
1123 if (s->pict_type == I_TYPE) {
1124 /* keyframe */
1125 for (y=0; y < height; y+=16) {
1126 for (x=0; x < width; x+=16) {
1127 result = svq1_decode_block_intra (&s->gb, &current[x], linesize);
1128 if (result != 0)
1129 {
1130 #ifdef DEBUG_SVQ1
1131 printf("Error in svq1_decode_block %i (keyframe)\n",result);
1132 #endif
1133 return result;
1134 }
1135 }
1136 current += 16*linesize;
1137 }
1138 } else {
1139 svq1_pmv_t pmv[width/8+3];
1140 /* delta frame */
1141 memset (pmv, 0, ((width / 8) + 3) * sizeof(svq1_pmv_t));
1142
1143 for (y=0; y < height; y+=16) {
1144 for (x=0; x < width; x+=16) {
1145 result = svq1_decode_delta_block (s, &s->gb, &current[x], previous,
1146 linesize, pmv, x, y);
1147 if (result != 0)
1148 {
1149 #ifdef DEBUG_SVQ1
1150 printf("Error in svq1_decode_delta_block %i\n",result);
1151 #endif
1152 return result;
1153 }
1154 }
1155
1156 pmv[0].x =
1157 pmv[0].y = 0;
1158
1159 current += 16*linesize;
1160 }
1161 }
1162
1163 pict->data[i] = s->current_picture[i];
1164 pict->linesize[i] = linesize;
1165 }
1166
1167 *data_size=sizeof(AVPicture);
1168 return buf_size;
1169 }
1170
1171 static int svq1_decode_init(AVCodecContext *avctx)
1172 {
1173 MpegEncContext *s = avctx->priv_data;
1174
1175 s->avctx = avctx;
1176 s->width = (avctx->width+3)&~3;
1177 s->height = (avctx->height+3)&~3;
1178 s->codec_id= avctx->codec->id;
1179 avctx->mbskip_table= s->mbskip_table;
1180 avctx->pix_fmt = PIX_FMT_YUV410P;
1181 avctx->has_b_frames= s->has_b_frames=1; // not true, but DP frames and these behave like unidirectional b frames
1182 s->flags= avctx->flags;
1183 if (MPV_common_init(s) < 0) return -1;
1184 return 0;
1185 }
1186
1187 static int svq1_decode_end(AVCodecContext *avctx)
1188 {
1189 MpegEncContext *s = avctx->priv_data;
1190
1191 MPV_common_end(s);
1192 return 0;
1193 }
1194
1195 AVCodec svq1_decoder = {
1196 "svq1",
1197 CODEC_TYPE_VIDEO,
1198 CODEC_ID_SVQ1,
1199 sizeof(MpegEncContext),
1200 svq1_decode_init,
1201 NULL,
1202 svq1_decode_end,
1203 svq1_decode_frame,
1204 CODEC_CAP_DR1,
1205 };