2 * Copyright (C) 2004 Michael Niedermayer <michaelni@gmx.at>
4 * This file is part of FFmpeg.
6 * FFmpeg 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 2.1 of the License, or (at your option) any later version.
11 * FFmpeg 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.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
25 #include "rangecoder.h"
28 #include "mpegvideo.h"
33 static const int8_t quant3[256]={
34 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
35 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
36 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
37 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
38 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
39 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
40 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
41 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
42 -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
43 -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
44 -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
45 -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
46 -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
47 -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
48 -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
49 -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, 0,
51 static const int8_t quant3b[256]={
52 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
53 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
54 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
55 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
56 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
57 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
58 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
59 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
60 -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
61 -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
62 -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
63 -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
64 -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
65 -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
66 -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
67 -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
69 static const int8_t quant3bA[256]={
70 0, 0, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1,
71 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1,
72 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1,
73 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1,
74 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1,
75 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1,
76 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1,
77 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1,
78 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1,
79 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1,
80 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1,
81 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1,
82 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1,
83 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1,
84 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1,
85 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1,
87 static const int8_t quant5[256]={
88 0, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
89 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
90 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
91 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
92 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
93 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
94 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
95 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
96 -2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,
97 -2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,
98 -2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,
99 -2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,
100 -2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,
101 -2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,
102 -2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,
103 -2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-1,-1,-1,
105 static const int8_t quant7[256]={
106 0, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
107 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
108 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3,
109 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
110 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
111 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
112 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
113 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
114 -3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,
115 -3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,
116 -3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,
117 -3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,
118 -3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,
119 -3,-3,-3,-3,-3,-3,-3,-3,-3,-2,-2,-2,-2,-2,-2,-2,
120 -2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,
121 -2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-1,-1,
123 static const int8_t quant9[256]={
124 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3,
125 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
126 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
127 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
128 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
129 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
130 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
131 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
132 -4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,
133 -4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,
134 -4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,
135 -4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,
136 -4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,
137 -4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,
138 -4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-3,-3,-3,-3,
139 -3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-2,-2,-2,-2,-1,-1,
141 static const int8_t quant11[256]={
142 0, 1, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4,
143 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
144 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
145 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
146 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
147 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
148 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
149 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
150 -5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,
151 -5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,
152 -5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,
153 -5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,
154 -5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,
155 -5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-4,-4,
156 -4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,
157 -4,-4,-4,-4,-4,-3,-3,-3,-3,-3,-3,-3,-2,-2,-2,-1,
159 static const int8_t quant13[256]={
160 0, 1, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4,
161 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
162 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
163 5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
164 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
165 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
166 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
167 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
168 -6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,
169 -6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,
170 -6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,
171 -6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,
172 -6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-5,
173 -5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,
174 -5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,
175 -4,-4,-4,-4,-4,-4,-4,-4,-4,-3,-3,-3,-3,-2,-2,-1,
179 static const uint8_t obmc32[1024]={
180 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
181 0, 0, 0, 0, 0, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 0,
182 0, 0, 0, 4, 4, 4, 4, 8, 8, 12, 12, 12, 16, 16, 16, 16, 16, 16, 16, 16, 12, 12, 12, 8, 8, 4, 4, 4, 4, 0, 0, 0,
183 0, 0, 4, 4, 8, 8, 12, 16, 16, 20, 24, 24, 28, 28, 32, 32, 32, 32, 28, 28, 24, 24, 20, 16, 16, 12, 8, 8, 4, 4, 0, 0,
184 0, 0, 4, 8, 8, 12, 16, 24, 28, 32, 36, 40, 44, 48, 48, 48, 48, 48, 48, 44, 40, 36, 32, 28, 24, 16, 12, 8, 8, 4, 0, 0,
185 0, 4, 4, 8, 12, 20, 24, 32, 40, 44, 52, 56, 60, 64, 68, 72, 72, 68, 64, 60, 56, 52, 44, 40, 32, 24, 20, 12, 8, 4, 4, 0,
186 0, 4, 4, 12, 16, 24, 32, 40, 52, 60, 68, 76, 80, 88, 88, 92, 92, 88, 88, 80, 76, 68, 60, 52, 40, 32, 24, 16, 12, 4, 4, 0,
187 0, 4, 8, 16, 24, 32, 40, 52, 64, 76, 84, 92,100,108,112,116,116,112,108,100, 92, 84, 76, 64, 52, 40, 32, 24, 16, 8, 4, 0,
188 0, 4, 8, 16, 28, 40, 52, 64, 76, 88,100,112,124,132,136,140,140,136,132,124,112,100, 88, 76, 64, 52, 40, 28, 16, 8, 4, 0,
189 0, 4, 12, 20, 32, 44, 60, 76, 88,104,120,132,144,152,160,164,164,160,152,144,132,120,104, 88, 76, 60, 44, 32, 20, 12, 4, 0,
190 0, 4, 12, 24, 36, 48, 68, 84,100,120,136,152,164,176,180,184,184,180,176,164,152,136,120,100, 84, 68, 48, 36, 24, 12, 4, 0,
191 0, 4, 12, 24, 40, 56, 76, 92,112,132,152,168,180,192,204,208,208,204,192,180,168,152,132,112, 92, 76, 56, 40, 24, 12, 4, 0,
192 0, 4, 16, 28, 44, 60, 80,100,124,144,164,180,196,208,220,224,224,220,208,196,180,164,144,124,100, 80, 60, 44, 28, 16, 4, 0,
193 0, 8, 16, 28, 48, 64, 88,108,132,152,176,192,208,224,232,240,240,232,224,208,192,176,152,132,108, 88, 64, 48, 28, 16, 8, 0,
194 0, 4, 16, 32, 48, 68, 88,112,136,160,180,204,220,232,244,248,248,244,232,220,204,180,160,136,112, 88, 68, 48, 32, 16, 4, 0,
195 1, 8, 16, 32, 48, 72, 92,116,140,164,184,208,224,240,248,255,255,248,240,224,208,184,164,140,116, 92, 72, 48, 32, 16, 8, 1,
196 1, 8, 16, 32, 48, 72, 92,116,140,164,184,208,224,240,248,255,255,248,240,224,208,184,164,140,116, 92, 72, 48, 32, 16, 8, 1,
197 0, 4, 16, 32, 48, 68, 88,112,136,160,180,204,220,232,244,248,248,244,232,220,204,180,160,136,112, 88, 68, 48, 32, 16, 4, 0,
198 0, 8, 16, 28, 48, 64, 88,108,132,152,176,192,208,224,232,240,240,232,224,208,192,176,152,132,108, 88, 64, 48, 28, 16, 8, 0,
199 0, 4, 16, 28, 44, 60, 80,100,124,144,164,180,196,208,220,224,224,220,208,196,180,164,144,124,100, 80, 60, 44, 28, 16, 4, 0,
200 0, 4, 12, 24, 40, 56, 76, 92,112,132,152,168,180,192,204,208,208,204,192,180,168,152,132,112, 92, 76, 56, 40, 24, 12, 4, 0,
201 0, 4, 12, 24, 36, 48, 68, 84,100,120,136,152,164,176,180,184,184,180,176,164,152,136,120,100, 84, 68, 48, 36, 24, 12, 4, 0,
202 0, 4, 12, 20, 32, 44, 60, 76, 88,104,120,132,144,152,160,164,164,160,152,144,132,120,104, 88, 76, 60, 44, 32, 20, 12, 4, 0,
203 0, 4, 8, 16, 28, 40, 52, 64, 76, 88,100,112,124,132,136,140,140,136,132,124,112,100, 88, 76, 64, 52, 40, 28, 16, 8, 4, 0,
204 0, 4, 8, 16, 24, 32, 40, 52, 64, 76, 84, 92,100,108,112,116,116,112,108,100, 92, 84, 76, 64, 52, 40, 32, 24, 16, 8, 4, 0,
205 0, 4, 4, 12, 16, 24, 32, 40, 52, 60, 68, 76, 80, 88, 88, 92, 92, 88, 88, 80, 76, 68, 60, 52, 40, 32, 24, 16, 12, 4, 4, 0,
206 0, 4, 4, 8, 12, 20, 24, 32, 40, 44, 52, 56, 60, 64, 68, 72, 72, 68, 64, 60, 56, 52, 44, 40, 32, 24, 20, 12, 8, 4, 4, 0,
207 0, 0, 4, 8, 8, 12, 16, 24, 28, 32, 36, 40, 44, 48, 48, 48, 48, 48, 48, 44, 40, 36, 32, 28, 24, 16, 12, 8, 8, 4, 0, 0,
208 0, 0, 4, 4, 8, 8, 12, 16, 16, 20, 24, 24, 28, 28, 32, 32, 32, 32, 28, 28, 24, 24, 20, 16, 16, 12, 8, 8, 4, 4, 0, 0,
209 0, 0, 0, 4, 4, 4, 4, 8, 8, 12, 12, 12, 16, 16, 16, 16, 16, 16, 16, 16, 12, 12, 12, 8, 8, 4, 4, 4, 4, 0, 0, 0,
210 0, 0, 0, 0, 0, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 0,
211 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
214 static const uint8_t obmc16[256]={
215 0, 0, 0, 0, 0, 0, 4, 4, 4, 4, 0, 0, 0, 0, 0, 0,
216 0, 4, 4, 8, 16, 20, 20, 24, 24, 20, 20, 16, 8, 4, 4, 0,
217 0, 4, 16, 24, 36, 44, 52, 60, 60, 52, 44, 36, 24, 16, 4, 0,
218 0, 8, 24, 44, 60, 80, 96,104,104, 96, 80, 60, 44, 24, 8, 0,
219 0, 16, 36, 60, 92,116,136,152,152,136,116, 92, 60, 36, 16, 0,
220 0, 20, 44, 80,116,152,180,196,196,180,152,116, 80, 44, 20, 0,
221 4, 20, 52, 96,136,180,212,228,228,212,180,136, 96, 52, 20, 4,
222 4, 24, 60,104,152,196,228,248,248,228,196,152,104, 60, 24, 4,
223 4, 24, 60,104,152,196,228,248,248,228,196,152,104, 60, 24, 4,
224 4, 20, 52, 96,136,180,212,228,228,212,180,136, 96, 52, 20, 4,
225 0, 20, 44, 80,116,152,180,196,196,180,152,116, 80, 44, 20, 0,
226 0, 16, 36, 60, 92,116,136,152,152,136,116, 92, 60, 36, 16, 0,
227 0, 8, 24, 44, 60, 80, 96,104,104, 96, 80, 60, 44, 24, 8, 0,
228 0, 4, 16, 24, 36, 44, 52, 60, 60, 52, 44, 36, 24, 16, 4, 0,
229 0, 4, 4, 8, 16, 20, 20, 24, 24, 20, 20, 16, 8, 4, 4, 0,
230 0, 0, 0, 0, 0, 0, 4, 4, 4, 4, 0, 0, 0, 0, 0, 0,
234 static const uint8_t obmc32[1024]={
235 0, 0, 0, 0, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0,
236 0, 4, 4, 4, 8, 8, 8, 12, 12, 16, 16, 16, 20, 20, 20, 24, 24, 20, 20, 20, 16, 16, 16, 12, 12, 8, 8, 8, 4, 4, 4, 0,
237 0, 4, 8, 8, 12, 12, 16, 20, 20, 24, 28, 28, 32, 32, 36, 40, 40, 36, 32, 32, 28, 28, 24, 20, 20, 16, 12, 12, 8, 8, 4, 0,
238 0, 4, 8, 12, 16, 20, 24, 28, 28, 32, 36, 40, 44, 48, 52, 56, 56, 52, 48, 44, 40, 36, 32, 28, 28, 24, 20, 16, 12, 8, 4, 0,
239 4, 8, 12, 16, 20, 24, 28, 32, 40, 44, 48, 52, 56, 60, 64, 68, 68, 64, 60, 56, 52, 48, 44, 40, 32, 28, 24, 20, 16, 12, 8, 4,
240 4, 8, 12, 20, 24, 32, 36, 40, 48, 52, 56, 64, 68, 76, 80, 84, 84, 80, 76, 68, 64, 56, 52, 48, 40, 36, 32, 24, 20, 12, 8, 4,
241 4, 8, 16, 24, 28, 36, 44, 48, 56, 60, 68, 76, 80, 88, 96,100,100, 96, 88, 80, 76, 68, 60, 56, 48, 44, 36, 28, 24, 16, 8, 4,
242 4, 12, 20, 28, 32, 40, 48, 56, 64, 72, 80, 88, 92,100,108,116,116,108,100, 92, 88, 80, 72, 64, 56, 48, 40, 32, 28, 20, 12, 4,
243 4, 12, 20, 28, 40, 48, 56, 64, 72, 80, 88, 96,108,116,124,132,132,124,116,108, 96, 88, 80, 72, 64, 56, 48, 40, 28, 20, 12, 4,
244 4, 16, 24, 32, 44, 52, 60, 72, 80, 92,100,108,120,128,136,148,148,136,128,120,108,100, 92, 80, 72, 60, 52, 44, 32, 24, 16, 4,
245 4, 16, 28, 36, 48, 56, 68, 80, 88,100,112,120,132,140,152,164,164,152,140,132,120,112,100, 88, 80, 68, 56, 48, 36, 28, 16, 4,
246 4, 16, 28, 40, 52, 64, 76, 88, 96,108,120,132,144,156,168,180,180,168,156,144,132,120,108, 96, 88, 76, 64, 52, 40, 28, 16, 4,
247 8, 20, 32, 44, 56, 68, 80, 92,108,120,132,144,156,168,180,192,192,180,168,156,144,132,120,108, 92, 80, 68, 56, 44, 32, 20, 8,
248 8, 20, 32, 48, 60, 76, 88,100,116,128,140,156,168,184,196,208,208,196,184,168,156,140,128,116,100, 88, 76, 60, 48, 32, 20, 8,
249 8, 20, 36, 52, 64, 80, 96,108,124,136,152,168,180,196,212,224,224,212,196,180,168,152,136,124,108, 96, 80, 64, 52, 36, 20, 8,
250 8, 24, 40, 56, 68, 84,100,116,132,148,164,180,192,208,224,240,240,224,208,192,180,164,148,132,116,100, 84, 68, 56, 40, 24, 8,
251 8, 24, 40, 56, 68, 84,100,116,132,148,164,180,192,208,224,240,240,224,208,192,180,164,148,132,116,100, 84, 68, 56, 40, 24, 8,
252 8, 20, 36, 52, 64, 80, 96,108,124,136,152,168,180,196,212,224,224,212,196,180,168,152,136,124,108, 96, 80, 64, 52, 36, 20, 8,
253 8, 20, 32, 48, 60, 76, 88,100,116,128,140,156,168,184,196,208,208,196,184,168,156,140,128,116,100, 88, 76, 60, 48, 32, 20, 8,
254 8, 20, 32, 44, 56, 68, 80, 92,108,120,132,144,156,168,180,192,192,180,168,156,144,132,120,108, 92, 80, 68, 56, 44, 32, 20, 8,
255 4, 16, 28, 40, 52, 64, 76, 88, 96,108,120,132,144,156,168,180,180,168,156,144,132,120,108, 96, 88, 76, 64, 52, 40, 28, 16, 4,
256 4, 16, 28, 36, 48, 56, 68, 80, 88,100,112,120,132,140,152,164,164,152,140,132,120,112,100, 88, 80, 68, 56, 48, 36, 28, 16, 4,
257 4, 16, 24, 32, 44, 52, 60, 72, 80, 92,100,108,120,128,136,148,148,136,128,120,108,100, 92, 80, 72, 60, 52, 44, 32, 24, 16, 4,
258 4, 12, 20, 28, 40, 48, 56, 64, 72, 80, 88, 96,108,116,124,132,132,124,116,108, 96, 88, 80, 72, 64, 56, 48, 40, 28, 20, 12, 4,
259 4, 12, 20, 28, 32, 40, 48, 56, 64, 72, 80, 88, 92,100,108,116,116,108,100, 92, 88, 80, 72, 64, 56, 48, 40, 32, 28, 20, 12, 4,
260 4, 8, 16, 24, 28, 36, 44, 48, 56, 60, 68, 76, 80, 88, 96,100,100, 96, 88, 80, 76, 68, 60, 56, 48, 44, 36, 28, 24, 16, 8, 4,
261 4, 8, 12, 20, 24, 32, 36, 40, 48, 52, 56, 64, 68, 76, 80, 84, 84, 80, 76, 68, 64, 56, 52, 48, 40, 36, 32, 24, 20, 12, 8, 4,
262 4, 8, 12, 16, 20, 24, 28, 32, 40, 44, 48, 52, 56, 60, 64, 68, 68, 64, 60, 56, 52, 48, 44, 40, 32, 28, 24, 20, 16, 12, 8, 4,
263 0, 4, 8, 12, 16, 20, 24, 28, 28, 32, 36, 40, 44, 48, 52, 56, 56, 52, 48, 44, 40, 36, 32, 28, 28, 24, 20, 16, 12, 8, 4, 0,
264 0, 4, 8, 8, 12, 12, 16, 20, 20, 24, 28, 28, 32, 32, 36, 40, 40, 36, 32, 32, 28, 28, 24, 20, 20, 16, 12, 12, 8, 8, 4, 0,
265 0, 4, 4, 4, 8, 8, 8, 12, 12, 16, 16, 16, 20, 20, 20, 24, 24, 20, 20, 20, 16, 16, 16, 12, 12, 8, 8, 8, 4, 4, 4, 0,
266 0, 0, 0, 0, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0,
269 static const uint8_t obmc16[256]={
270 0, 4, 4, 8, 8, 12, 12, 16, 16, 12, 12, 8, 8, 4, 4, 0,
271 4, 8, 16, 20, 28, 32, 40, 44, 44, 40, 32, 28, 20, 16, 8, 4,
272 4, 16, 24, 36, 44, 56, 64, 76, 76, 64, 56, 44, 36, 24, 16, 4,
273 8, 20, 36, 48, 64, 76, 92,104,104, 92, 76, 64, 48, 36, 20, 8,
274 8, 28, 44, 64, 80,100,116,136,136,116,100, 80, 64, 44, 28, 8,
275 12, 32, 56, 76,100,120,144,164,164,144,120,100, 76, 56, 32, 12,
276 12, 40, 64, 92,116,144,168,196,196,168,144,116, 92, 64, 40, 12,
277 16, 44, 76,104,136,164,196,224,224,196,164,136,104, 76, 44, 16,
278 16, 44, 76,104,136,164,196,224,224,196,164,136,104, 76, 44, 16,
279 12, 40, 64, 92,116,144,168,196,196,168,144,116, 92, 64, 40, 12,
280 12, 32, 56, 76,100,120,144,164,164,144,120,100, 76, 56, 32, 12,
281 8, 28, 44, 64, 80,100,116,136,136,116,100, 80, 64, 44, 28, 8,
282 8, 20, 36, 48, 64, 76, 92,104,104, 92, 76, 64, 48, 36, 20, 8,
283 4, 16, 24, 36, 44, 56, 64, 76, 76, 64, 56, 44, 36, 24, 16, 4,
284 4, 8, 16, 20, 28, 32, 40, 44, 44, 40, 32, 28, 20, 16, 8, 4,
285 0, 4, 4, 8, 8, 12, 12, 16, 16, 12, 12, 8, 8, 4, 4, 0,
289 static const uint8_t obmc32[1024]={
290 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
291 0, 0, 0, 0, 0, 0, 4, 4, 4, 4, 4, 4, 4, 4, 8, 4, 4, 8, 4, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 0, 0,
292 0, 0, 0, 4, 4, 4, 4, 8, 8, 12, 12, 12, 12, 16, 16, 16, 16, 16, 16, 12, 12, 12, 12, 8, 8, 4, 4, 4, 4, 0, 0, 0,
293 0, 0, 4, 4, 4, 8, 8, 12, 16, 20, 20, 24, 28, 28, 28, 28, 28, 28, 28, 28, 24, 20, 20, 16, 12, 8, 8, 4, 4, 4, 0, 0,
294 0, 0, 4, 4, 8, 12, 16, 20, 24, 28, 36, 40, 44, 44, 48, 48, 48, 48, 44, 44, 40, 36, 28, 24, 20, 16, 12, 8, 4, 4, 0, 0,
295 0, 0, 4, 8, 12, 20, 24, 32, 36, 44, 48, 56, 60, 64, 68, 68, 68, 68, 64, 60, 56, 48, 44, 36, 32, 24, 20, 12, 8, 4, 0, 0,
296 0, 4, 4, 8, 16, 24, 32, 40, 48, 60, 68, 76, 80, 84, 88, 92, 92, 88, 84, 80, 76, 68, 60, 48, 40, 32, 24, 16, 8, 4, 4, 0,
297 0, 4, 8, 12, 20, 32, 40, 52, 64, 76, 84, 96,104,108,112,116,116,112,108,104, 96, 84, 76, 64, 52, 40, 32, 20, 12, 8, 4, 0,
298 0, 4, 8, 16, 24, 36, 48, 64, 76, 92,104,116,124,132,136,140,140,136,132,124,116,104, 92, 76, 64, 48, 36, 24, 16, 8, 4, 0,
299 0, 4, 12, 20, 28, 44, 60, 76, 92,104,120,136,148,156,160,164,164,160,156,148,136,120,104, 92, 76, 60, 44, 28, 20, 12, 4, 0,
300 0, 4, 12, 20, 36, 48, 68, 84,104,120,140,152,168,176,184,188,188,184,176,168,152,140,120,104, 84, 68, 48, 36, 20, 12, 4, 0,
301 0, 4, 12, 24, 36, 56, 76, 96,116,136,152,172,184,196,204,208,208,204,196,184,172,152,136,116, 96, 76, 56, 36, 24, 12, 4, 0,
302 0, 4, 12, 24, 44, 60, 80,104,124,148,168,184,200,212,224,228,228,224,212,200,184,168,148,124,104, 80, 60, 44, 24, 12, 4, 0,
303 0, 4, 12, 28, 44, 64, 84,108,132,156,176,196,212,228,236,240,240,236,228,212,196,176,156,132,108, 84, 64, 44, 28, 12, 4, 0,
304 0, 4, 16, 28, 48, 68, 88,112,136,160,184,204,224,236,244,252,252,244,236,224,204,184,160,136,112, 88, 68, 48, 28, 16, 4, 0,
305 1, 4, 16, 28, 48, 68, 92,116,140,164,188,208,228,240,252,255,255,252,240,228,208,188,164,140,116, 92, 68, 48, 28, 16, 4, 1,
306 1, 4, 16, 28, 48, 68, 92,116,140,164,188,208,228,240,252,255,255,252,240,228,208,188,164,140,116, 92, 68, 48, 28, 16, 4, 1,
307 0, 4, 16, 28, 48, 68, 88,112,136,160,184,204,224,236,244,252,252,244,236,224,204,184,160,136,112, 88, 68, 48, 28, 16, 4, 0,
308 0, 4, 12, 28, 44, 64, 84,108,132,156,176,196,212,228,236,240,240,236,228,212,196,176,156,132,108, 84, 64, 44, 28, 12, 4, 0,
309 0, 4, 12, 24, 44, 60, 80,104,124,148,168,184,200,212,224,228,228,224,212,200,184,168,148,124,104, 80, 60, 44, 24, 12, 4, 0,
310 0, 4, 12, 24, 36, 56, 76, 96,116,136,152,172,184,196,204,208,208,204,196,184,172,152,136,116, 96, 76, 56, 36, 24, 12, 4, 0,
311 0, 4, 12, 20, 36, 48, 68, 84,104,120,140,152,168,176,184,188,188,184,176,168,152,140,120,104, 84, 68, 48, 36, 20, 12, 4, 0,
312 0, 4, 12, 20, 28, 44, 60, 76, 92,104,120,136,148,156,160,164,164,160,156,148,136,120,104, 92, 76, 60, 44, 28, 20, 12, 4, 0,
313 0, 4, 8, 16, 24, 36, 48, 64, 76, 92,104,116,124,132,136,140,140,136,132,124,116,104, 92, 76, 64, 48, 36, 24, 16, 8, 4, 0,
314 0, 4, 8, 12, 20, 32, 40, 52, 64, 76, 84, 96,104,108,112,116,116,112,108,104, 96, 84, 76, 64, 52, 40, 32, 20, 12, 8, 4, 0,
315 0, 4, 4, 8, 16, 24, 32, 40, 48, 60, 68, 76, 80, 84, 88, 92, 92, 88, 84, 80, 76, 68, 60, 48, 40, 32, 24, 16, 8, 4, 4, 0,
316 0, 0, 4, 8, 12, 20, 24, 32, 36, 44, 48, 56, 60, 64, 68, 68, 68, 68, 64, 60, 56, 48, 44, 36, 32, 24, 20, 12, 8, 4, 0, 0,
317 0, 0, 4, 4, 8, 12, 16, 20, 24, 28, 36, 40, 44, 44, 48, 48, 48, 48, 44, 44, 40, 36, 28, 24, 20, 16, 12, 8, 4, 4, 0, 0,
318 0, 0, 4, 4, 4, 8, 8, 12, 16, 20, 20, 24, 28, 28, 28, 28, 28, 28, 28, 28, 24, 20, 20, 16, 12, 8, 8, 4, 4, 4, 0, 0,
319 0, 0, 0, 4, 4, 4, 4, 8, 8, 12, 12, 12, 12, 16, 16, 16, 16, 16, 16, 12, 12, 12, 12, 8, 8, 4, 4, 4, 4, 0, 0, 0,
320 0, 0, 0, 0, 0, 0, 4, 4, 4, 4, 4, 4, 4, 4, 8, 4, 4, 8, 4, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 0, 0,
321 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
324 static const uint8_t obmc16[256]={
325 0, 0, 0, 0, 0, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 0,
326 0, 0, 4, 8, 12, 16, 20, 20, 20, 20, 16, 12, 8, 4, 0, 0,
327 0, 4, 12, 24, 32, 44, 52, 56, 56, 52, 44, 32, 24, 12, 4, 0,
328 0, 8, 24, 40, 60, 80, 96,104,104, 96, 80, 60, 40, 24, 8, 0,
329 0, 12, 32, 64, 92,120,140,152,152,140,120, 92, 64, 32, 12, 0,
330 4, 16, 44, 80,120,156,184,196,196,184,156,120, 80, 44, 16, 4,
331 4, 20, 52, 96,140,184,216,232,232,216,184,140, 96, 52, 20, 4,
332 0, 20, 56,104,152,196,232,252,252,232,196,152,104, 56, 20, 0,
333 0, 20, 56,104,152,196,232,252,252,232,196,152,104, 56, 20, 0,
334 4, 20, 52, 96,140,184,216,232,232,216,184,140, 96, 52, 20, 4,
335 4, 16, 44, 80,120,156,184,196,196,184,156,120, 80, 44, 16, 4,
336 0, 12, 32, 64, 92,120,140,152,152,140,120, 92, 64, 32, 12, 0,
337 0, 8, 24, 40, 60, 80, 96,104,104, 96, 80, 60, 40, 24, 8, 0,
338 0, 4, 12, 24, 32, 44, 52, 56, 56, 52, 44, 32, 24, 12, 4, 0,
339 0, 0, 4, 8, 12, 16, 20, 20, 20, 20, 16, 12, 8, 4, 0, 0,
340 0, 0, 0, 0, 0, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 0,
346 static const uint8_t obmc8[64]={
347 4, 12, 20, 28, 28, 20, 12, 4,
348 12, 36, 60, 84, 84, 60, 36, 12,
349 20, 60,100,140,140,100, 60, 20,
350 28, 84,140,196,196,140, 84, 28,
351 28, 84,140,196,196,140, 84, 28,
352 20, 60,100,140,140,100, 60, 20,
353 12, 36, 60, 84, 84, 60, 36, 12,
354 4, 12, 20, 28, 28, 20, 12, 4,
359 static const uint8_t obmc4[16]={
367 static const uint8_t * const obmc_tab[4]={
368 obmc32, obmc16, obmc8, obmc4
371 static int scale_mv_ref[MAX_REF_FRAMES][MAX_REF_FRAMES];
373 typedef struct BlockNode{
379 //#define TYPE_SPLIT 1
380 #define BLOCK_INTRA 1
382 //#define TYPE_NOCOLOR 4
383 uint8_t level; //FIXME merge into type?
386 static const BlockNode null_block= { //FIXME add border maybe
387 .color= {128,128,128},
395 #define LOG2_MB_SIZE 4
396 #define MB_SIZE (1<<LOG2_MB_SIZE)
397 #define ENCODER_EXTRA_BITS 4
400 typedef struct x_and_coeff{
405 typedef struct SubBand{
410 int qlog; ///< log(qscale)/log[2^(1/6)]
415 int stride_line; ///< Stride measured in lines, not pixels.
416 x_and_coeff * x_coeff;
417 struct SubBand *parent;
418 uint8_t state[/*7*2*/ 7 + 512][32];
421 typedef struct Plane{
424 SubBand band[MAX_DECOMPOSITIONS][4];
427 int8_t hcoeff[HTAPS_MAX/2];
432 int8_t last_hcoeff[HTAPS_MAX/2];
436 typedef struct SnowContext{
437 // MpegEncContext m; // needed for motion estimation, should not be used for anything else, the idea is to eventually make the motion estimation independent of MpegEncContext, so this will be removed then (FIXME/XXX)
439 AVCodecContext *avctx;
443 AVFrame input_picture; ///< new_picture with the internal linesizes
444 AVFrame current_picture;
445 AVFrame last_picture[MAX_REF_FRAMES];
446 uint8_t *halfpel_plane[MAX_REF_FRAMES][4][4];
447 AVFrame mconly_picture;
448 // uint8_t q_context[16];
449 uint8_t header_state[32];
450 uint8_t block_state[128 + 32*128];
454 int spatial_decomposition_type;
455 int last_spatial_decomposition_type;
456 int temporal_decomposition_type;
457 int spatial_decomposition_count;
458 int last_spatial_decomposition_count;
459 int temporal_decomposition_count;
462 int16_t (*ref_mvs[MAX_REF_FRAMES])[2];
463 uint32_t *ref_scores[MAX_REF_FRAMES];
464 DWTELEM *spatial_dwt_buffer;
465 IDWTELEM *spatial_idwt_buffer;
469 int spatial_scalability;
479 #define QBIAS_SHIFT 3
483 int last_block_max_depth;
484 Plane plane[MAX_PLANES];
486 #define ME_CACHE_SIZE 1024
487 int me_cache[ME_CACHE_SIZE];
488 int me_cache_generation;
491 MpegEncContext m; // needed for motion estimation, should not be used for anything else, the idea is to eventually make the motion estimation independent of MpegEncContext, so this will be removed then (FIXME/XXX)
504 #define slice_buffer_get_line(slice_buf, line_num) ((slice_buf)->line[line_num] ? (slice_buf)->line[line_num] : slice_buffer_load_line((slice_buf), (line_num)))
505 //#define slice_buffer_get_line(slice_buf, line_num) (slice_buffer_load_line((slice_buf), (line_num)))
507 static void iterative_me(SnowContext *s);
509 static void slice_buffer_init(slice_buffer * buf, int line_count, int max_allocated_lines, int line_width, IDWTELEM * base_buffer)
513 buf->base_buffer = base_buffer;
514 buf->line_count = line_count;
515 buf->line_width = line_width;
516 buf->data_count = max_allocated_lines;
517 buf->line = av_mallocz (sizeof(IDWTELEM *) * line_count);
518 buf->data_stack = av_malloc (sizeof(IDWTELEM *) * max_allocated_lines);
520 for(i = 0; i < max_allocated_lines; i++){
521 buf->data_stack[i] = av_malloc (sizeof(IDWTELEM) * line_width);
524 buf->data_stack_top = max_allocated_lines - 1;
527 static IDWTELEM * slice_buffer_load_line(slice_buffer * buf, int line)
532 assert(buf->data_stack_top >= 0);
533 // assert(!buf->line[line]);
535 return buf->line[line];
537 offset = buf->line_width * line;
538 buffer = buf->data_stack[buf->data_stack_top];
539 buf->data_stack_top--;
540 buf->line[line] = buffer;
545 static void slice_buffer_release(slice_buffer * buf, int line)
550 assert(line >= 0 && line < buf->line_count);
551 assert(buf->line[line]);
553 offset = buf->line_width * line;
554 buffer = buf->line[line];
555 buf->data_stack_top++;
556 buf->data_stack[buf->data_stack_top] = buffer;
557 buf->line[line] = NULL;
560 static void slice_buffer_flush(slice_buffer * buf)
563 for(i = 0; i < buf->line_count; i++){
565 slice_buffer_release(buf, i);
569 static void slice_buffer_destroy(slice_buffer * buf)
572 slice_buffer_flush(buf);
574 for(i = buf->data_count - 1; i >= 0; i--){
575 av_freep(&buf->data_stack[i]);
577 av_freep(&buf->data_stack);
578 av_freep(&buf->line);
582 // Avoid a name clash on SGI IRIX
585 #define QEXPSHIFT (7-FRAC_BITS+8) //FIXME try to change this to 0
586 static uint8_t qexp[QROOT];
588 static inline int mirror(int v, int m){
589 while((unsigned)v > (unsigned)m){
596 static inline void put_symbol(RangeCoder *c, uint8_t *state, int v, int is_signed){
600 const int a= FFABS(v);
601 const int e= av_log2(a);
603 const int el= FFMIN(e, 10);
604 put_rac(c, state+0, 0);
607 put_rac(c, state+1+i, 1); //1..10
610 put_rac(c, state+1+9, 1); //1..10
612 put_rac(c, state+1+FFMIN(i,9), 0);
614 for(i=e-1; i>=el; i--){
615 put_rac(c, state+22+9, (a>>i)&1); //22..31
618 put_rac(c, state+22+i, (a>>i)&1); //22..31
622 put_rac(c, state+11 + el, v < 0); //11..21
625 put_rac(c, state+0, 0);
628 put_rac(c, state+1+i, 1); //1..10
630 put_rac(c, state+1+i, 0);
632 for(i=e-1; i>=0; i--){
633 put_rac(c, state+22+i, (a>>i)&1); //22..31
637 put_rac(c, state+11 + e, v < 0); //11..21
640 put_rac(c, state+1+FFMIN(i,9), 1); //1..10
642 put_rac(c, state+1+FFMIN(i,9), 0);
644 for(i=e-1; i>=0; i--){
645 put_rac(c, state+22+FFMIN(i,9), (a>>i)&1); //22..31
649 put_rac(c, state+11 + FFMIN(e,10), v < 0); //11..21
653 put_rac(c, state+0, 1);
657 static inline int get_symbol(RangeCoder *c, uint8_t *state, int is_signed){
658 if(get_rac(c, state+0))
663 while(get_rac(c, state+1 + FFMIN(e,9))){ //1..10
668 for(i=e-1; i>=0; i--){
669 a += a + get_rac(c, state+22 + FFMIN(i,9)); //22..31
672 if(is_signed && get_rac(c, state+11 + FFMIN(e,10))) //11..21
679 static inline void put_symbol2(RangeCoder *c, uint8_t *state, int v, int log2){
681 int r= log2>=0 ? 1<<log2 : 1;
687 put_rac(c, state+4+log2, 1);
692 put_rac(c, state+4+log2, 0);
694 for(i=log2-1; i>=0; i--){
695 put_rac(c, state+31-i, (v>>i)&1);
699 static inline int get_symbol2(RangeCoder *c, uint8_t *state, int log2){
701 int r= log2>=0 ? 1<<log2 : 1;
706 while(get_rac(c, state+4+log2)){
712 for(i=log2-1; i>=0; i--){
713 v+= get_rac(c, state+31-i)<<i;
719 static av_always_inline void
720 lift(DWTELEM *dst, DWTELEM *src, DWTELEM *ref,
721 int dst_step, int src_step, int ref_step,
722 int width, int mul, int add, int shift,
723 int highpass, int inverse){
724 const int mirror_left= !highpass;
725 const int mirror_right= (width&1) ^ highpass;
726 const int w= (width>>1) - 1 + (highpass & width);
729 #define LIFT(src, ref, inv) ((src) + ((inv) ? - (ref) : + (ref)))
731 dst[0] = LIFT(src[0], ((mul*2*ref[0]+add)>>shift), inverse);
738 LIFT(src[i*src_step],
739 ((mul*(ref[i*ref_step] + ref[(i+1)*ref_step])+add)>>shift),
745 LIFT(src[w*src_step],
746 ((mul*2*ref[w*ref_step]+add)>>shift),
751 static av_always_inline void
752 inv_lift(IDWTELEM *dst, IDWTELEM *src, IDWTELEM *ref,
753 int dst_step, int src_step, int ref_step,
754 int width, int mul, int add, int shift,
755 int highpass, int inverse){
756 const int mirror_left= !highpass;
757 const int mirror_right= (width&1) ^ highpass;
758 const int w= (width>>1) - 1 + (highpass & width);
761 #define LIFT(src, ref, inv) ((src) + ((inv) ? - (ref) : + (ref)))
763 dst[0] = LIFT(src[0], ((mul*2*ref[0]+add)>>shift), inverse);
770 LIFT(src[i*src_step],
771 ((mul*(ref[i*ref_step] + ref[(i+1)*ref_step])+add)>>shift),
777 LIFT(src[w*src_step],
778 ((mul*2*ref[w*ref_step]+add)>>shift),
784 static av_always_inline void
785 liftS(DWTELEM *dst, DWTELEM *src, DWTELEM *ref,
786 int dst_step, int src_step, int ref_step,
787 int width, int mul, int add, int shift,
788 int highpass, int inverse){
789 const int mirror_left= !highpass;
790 const int mirror_right= (width&1) ^ highpass;
791 const int w= (width>>1) - 1 + (highpass & width);
795 #define LIFTS(src, ref, inv) \
797 (src) + (((ref) + 4*(src))>>shift): \
798 -((-16*(src) + (ref) + add/4 + 1 + (5<<25))/(5*4) - (1<<23)))
800 dst[0] = LIFTS(src[0], mul*2*ref[0]+add, inverse);
807 LIFTS(src[i*src_step],
808 mul*(ref[i*ref_step] + ref[(i+1)*ref_step])+add,
814 LIFTS(src[w*src_step], mul*2*ref[w*ref_step]+add, inverse);
817 static av_always_inline void
818 inv_liftS(IDWTELEM *dst, IDWTELEM *src, IDWTELEM *ref,
819 int dst_step, int src_step, int ref_step,
820 int width, int mul, int add, int shift,
821 int highpass, int inverse){
822 const int mirror_left= !highpass;
823 const int mirror_right= (width&1) ^ highpass;
824 const int w= (width>>1) - 1 + (highpass & width);
828 #define LIFTS(src, ref, inv) \
830 (src) + (((ref) + 4*(src))>>shift): \
831 -((-16*(src) + (ref) + add/4 + 1 + (5<<25))/(5*4) - (1<<23)))
833 dst[0] = LIFTS(src[0], mul*2*ref[0]+add, inverse);
840 LIFTS(src[i*src_step],
841 mul*(ref[i*ref_step] + ref[(i+1)*ref_step])+add,
847 LIFTS(src[w*src_step], mul*2*ref[w*ref_step]+add, inverse);
852 static void horizontal_decompose53i(DWTELEM *b, int width){
854 const int width2= width>>1;
856 const int w2= (width+1)>>1;
858 for(x=0; x<width2; x++){
860 temp[x+w2]= b[2*x + 1];
874 for(x=1; x+1<width2; x+=2){
878 A2 += (A1 + A3 + 2)>>2;
882 A1= temp[x+1+width2];
885 A4 += (A1 + A3 + 2)>>2;
891 A2 += (A1 + A3 + 2)>>2;
896 lift(b+w2, temp+w2, temp, 1, 1, 1, width, -1, 0, 1, 1, 0);
897 lift(b , temp , b+w2, 1, 1, 1, width, 1, 2, 2, 0, 0);
901 static void vertical_decompose53iH0(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, int width){
904 for(i=0; i<width; i++){
905 b1[i] -= (b0[i] + b2[i])>>1;
909 static void vertical_decompose53iL0(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, int width){
912 for(i=0; i<width; i++){
913 b1[i] += (b0[i] + b2[i] + 2)>>2;
917 static void spatial_decompose53i(DWTELEM *buffer, int width, int height, int stride){
919 DWTELEM *b0= buffer + mirror(-2-1, height-1)*stride;
920 DWTELEM *b1= buffer + mirror(-2 , height-1)*stride;
922 for(y=-2; y<height; y+=2){
923 DWTELEM *b2= buffer + mirror(y+1, height-1)*stride;
924 DWTELEM *b3= buffer + mirror(y+2, height-1)*stride;
926 if(y+1<(unsigned)height) horizontal_decompose53i(b2, width);
927 if(y+2<(unsigned)height) horizontal_decompose53i(b3, width);
929 if(y+1<(unsigned)height) vertical_decompose53iH0(b1, b2, b3, width);
930 if(y+0<(unsigned)height) vertical_decompose53iL0(b0, b1, b2, width);
937 static void horizontal_decompose97i(DWTELEM *b, int width){
939 const int w2= (width+1)>>1;
941 lift (temp+w2, b +1, b , 1, 2, 2, width, W_AM, W_AO, W_AS, 1, 1);
942 liftS(temp , b , temp+w2, 1, 2, 1, width, W_BM, W_BO, W_BS, 0, 0);
943 lift (b +w2, temp+w2, temp , 1, 1, 1, width, W_CM, W_CO, W_CS, 1, 0);
944 lift (b , temp , b +w2, 1, 1, 1, width, W_DM, W_DO, W_DS, 0, 0);
948 static void vertical_decompose97iH0(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, int width){
951 for(i=0; i<width; i++){
952 b1[i] -= (W_AM*(b0[i] + b2[i])+W_AO)>>W_AS;
956 static void vertical_decompose97iH1(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, int width){
959 for(i=0; i<width; i++){
960 b1[i] += (W_CM*(b0[i] + b2[i])+W_CO)>>W_CS;
964 static void vertical_decompose97iL0(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, int width){
967 for(i=0; i<width; i++){
969 b1[i] -= (W_BM*(b0[i] + b2[i])+W_BO)>>W_BS;
971 b1[i] = (16*4*b1[i] - 4*(b0[i] + b2[i]) + W_BO*5 + (5<<27)) / (5*16) - (1<<23);
976 static void vertical_decompose97iL1(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, int width){
979 for(i=0; i<width; i++){
980 b1[i] += (W_DM*(b0[i] + b2[i])+W_DO)>>W_DS;
984 static void spatial_decompose97i(DWTELEM *buffer, int width, int height, int stride){
986 DWTELEM *b0= buffer + mirror(-4-1, height-1)*stride;
987 DWTELEM *b1= buffer + mirror(-4 , height-1)*stride;
988 DWTELEM *b2= buffer + mirror(-4+1, height-1)*stride;
989 DWTELEM *b3= buffer + mirror(-4+2, height-1)*stride;
991 for(y=-4; y<height; y+=2){
992 DWTELEM *b4= buffer + mirror(y+3, height-1)*stride;
993 DWTELEM *b5= buffer + mirror(y+4, height-1)*stride;
995 if(y+3<(unsigned)height) horizontal_decompose97i(b4, width);
996 if(y+4<(unsigned)height) horizontal_decompose97i(b5, width);
998 if(y+3<(unsigned)height) vertical_decompose97iH0(b3, b4, b5, width);
999 if(y+2<(unsigned)height) vertical_decompose97iL0(b2, b3, b4, width);
1000 if(y+1<(unsigned)height) vertical_decompose97iH1(b1, b2, b3, width);
1001 if(y+0<(unsigned)height) vertical_decompose97iL1(b0, b1, b2, width);
1010 void ff_spatial_dwt(DWTELEM *buffer, int width, int height, int stride, int type, int decomposition_count){
1013 for(level=0; level<decomposition_count; level++){
1015 case DWT_97: spatial_decompose97i(buffer, width>>level, height>>level, stride<<level); break;
1016 case DWT_53: spatial_decompose53i(buffer, width>>level, height>>level, stride<<level); break;
1021 static void horizontal_compose53i(IDWTELEM *b, int width){
1022 IDWTELEM temp[width];
1023 const int width2= width>>1;
1024 const int w2= (width+1)>>1;
1036 for(x=1; x+1<width2; x+=2){
1040 A2 += (A1 + A3 + 2)>>2;
1044 A1= temp[x+1+width2];
1047 A4 += (A1 + A3 + 2)>>2;
1053 A2 += (A1 + A3 + 2)>>2;
1057 inv_lift(temp , b , b+w2, 1, 1, 1, width, 1, 2, 2, 0, 1);
1058 inv_lift(temp+w2, b+w2, temp, 1, 1, 1, width, -1, 0, 1, 1, 1);
1060 for(x=0; x<width2; x++){
1062 b[2*x + 1]= temp[x+w2];
1068 static void vertical_compose53iH0(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, int width){
1071 for(i=0; i<width; i++){
1072 b1[i] += (b0[i] + b2[i])>>1;
1076 static void vertical_compose53iL0(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, int width){
1079 for(i=0; i<width; i++){
1080 b1[i] -= (b0[i] + b2[i] + 2)>>2;
1084 static void spatial_compose53i_buffered_init(DWTCompose *cs, slice_buffer * sb, int height, int stride_line){
1085 cs->b0 = slice_buffer_get_line(sb, mirror(-1-1, height-1) * stride_line);
1086 cs->b1 = slice_buffer_get_line(sb, mirror(-1 , height-1) * stride_line);
1090 static void spatial_compose53i_init(DWTCompose *cs, IDWTELEM *buffer, int height, int stride){
1091 cs->b0 = buffer + mirror(-1-1, height-1)*stride;
1092 cs->b1 = buffer + mirror(-1 , height-1)*stride;
1096 static void spatial_compose53i_dy_buffered(DWTCompose *cs, slice_buffer * sb, int width, int height, int stride_line){
1099 IDWTELEM *b0= cs->b0;
1100 IDWTELEM *b1= cs->b1;
1101 IDWTELEM *b2= slice_buffer_get_line(sb, mirror(y+1, height-1) * stride_line);
1102 IDWTELEM *b3= slice_buffer_get_line(sb, mirror(y+2, height-1) * stride_line);
1104 if(y+1<(unsigned)height) vertical_compose53iL0(b1, b2, b3, width);
1105 if(y+0<(unsigned)height) vertical_compose53iH0(b0, b1, b2, width);
1107 if(y-1<(unsigned)height) horizontal_compose53i(b0, width);
1108 if(y+0<(unsigned)height) horizontal_compose53i(b1, width);
1115 static void spatial_compose53i_dy(DWTCompose *cs, IDWTELEM *buffer, int width, int height, int stride){
1117 IDWTELEM *b0= cs->b0;
1118 IDWTELEM *b1= cs->b1;
1119 IDWTELEM *b2= buffer + mirror(y+1, height-1)*stride;
1120 IDWTELEM *b3= buffer + mirror(y+2, height-1)*stride;
1122 if(y+1<(unsigned)height) vertical_compose53iL0(b1, b2, b3, width);
1123 if(y+0<(unsigned)height) vertical_compose53iH0(b0, b1, b2, width);
1125 if(y-1<(unsigned)height) horizontal_compose53i(b0, width);
1126 if(y+0<(unsigned)height) horizontal_compose53i(b1, width);
1133 static void av_unused spatial_compose53i(IDWTELEM *buffer, int width, int height, int stride){
1135 spatial_compose53i_init(&cs, buffer, height, stride);
1136 while(cs.y <= height)
1137 spatial_compose53i_dy(&cs, buffer, width, height, stride);
1141 void ff_snow_horizontal_compose97i(IDWTELEM *b, int width){
1142 IDWTELEM temp[width];
1143 const int w2= (width+1)>>1;
1145 inv_lift (temp , b , b +w2, 1, 1, 1, width, W_DM, W_DO, W_DS, 0, 1);
1146 inv_lift (temp+w2, b +w2, temp , 1, 1, 1, width, W_CM, W_CO, W_CS, 1, 1);
1147 inv_liftS(b , temp , temp+w2, 2, 1, 1, width, W_BM, W_BO, W_BS, 0, 1);
1148 inv_lift (b+1 , temp+w2, b , 2, 1, 2, width, W_AM, W_AO, W_AS, 1, 0);
1151 static void vertical_compose97iH0(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, int width){
1154 for(i=0; i<width; i++){
1155 b1[i] += (W_AM*(b0[i] + b2[i])+W_AO)>>W_AS;
1159 static void vertical_compose97iH1(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, int width){
1162 for(i=0; i<width; i++){
1163 b1[i] -= (W_CM*(b0[i] + b2[i])+W_CO)>>W_CS;
1167 static void vertical_compose97iL0(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, int width){
1170 for(i=0; i<width; i++){
1172 b1[i] += (W_BM*(b0[i] + b2[i])+W_BO)>>W_BS;
1174 b1[i] += (W_BM*(b0[i] + b2[i])+4*b1[i]+W_BO)>>W_BS;
1179 static void vertical_compose97iL1(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, int width){
1182 for(i=0; i<width; i++){
1183 b1[i] -= (W_DM*(b0[i] + b2[i])+W_DO)>>W_DS;
1187 void ff_snow_vertical_compose97i(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, IDWTELEM *b3, IDWTELEM *b4, IDWTELEM *b5, int width){
1190 for(i=0; i<width; i++){
1191 b4[i] -= (W_DM*(b3[i] + b5[i])+W_DO)>>W_DS;
1192 b3[i] -= (W_CM*(b2[i] + b4[i])+W_CO)>>W_CS;
1194 b2[i] += (W_BM*(b1[i] + b3[i])+W_BO)>>W_BS;
1196 b2[i] += (W_BM*(b1[i] + b3[i])+4*b2[i]+W_BO)>>W_BS;
1198 b1[i] += (W_AM*(b0[i] + b2[i])+W_AO)>>W_AS;
1202 static void spatial_compose97i_buffered_init(DWTCompose *cs, slice_buffer * sb, int height, int stride_line){
1203 cs->b0 = slice_buffer_get_line(sb, mirror(-3-1, height-1) * stride_line);
1204 cs->b1 = slice_buffer_get_line(sb, mirror(-3 , height-1) * stride_line);
1205 cs->b2 = slice_buffer_get_line(sb, mirror(-3+1, height-1) * stride_line);
1206 cs->b3 = slice_buffer_get_line(sb, mirror(-3+2, height-1) * stride_line);
1210 static void spatial_compose97i_init(DWTCompose *cs, IDWTELEM *buffer, int height, int stride){
1211 cs->b0 = buffer + mirror(-3-1, height-1)*stride;
1212 cs->b1 = buffer + mirror(-3 , height-1)*stride;
1213 cs->b2 = buffer + mirror(-3+1, height-1)*stride;
1214 cs->b3 = buffer + mirror(-3+2, height-1)*stride;
1218 static void spatial_compose97i_dy_buffered(DSPContext *dsp, DWTCompose *cs, slice_buffer * sb, int width, int height, int stride_line){
1221 IDWTELEM *b0= cs->b0;
1222 IDWTELEM *b1= cs->b1;
1223 IDWTELEM *b2= cs->b2;
1224 IDWTELEM *b3= cs->b3;
1225 IDWTELEM *b4= slice_buffer_get_line(sb, mirror(y + 3, height - 1) * stride_line);
1226 IDWTELEM *b5= slice_buffer_get_line(sb, mirror(y + 4, height - 1) * stride_line);
1228 if(y>0 && y+4<height){
1229 dsp->vertical_compose97i(b0, b1, b2, b3, b4, b5, width);
1231 if(y+3<(unsigned)height) vertical_compose97iL1(b3, b4, b5, width);
1232 if(y+2<(unsigned)height) vertical_compose97iH1(b2, b3, b4, width);
1233 if(y+1<(unsigned)height) vertical_compose97iL0(b1, b2, b3, width);
1234 if(y+0<(unsigned)height) vertical_compose97iH0(b0, b1, b2, width);
1237 if(y-1<(unsigned)height) dsp->horizontal_compose97i(b0, width);
1238 if(y+0<(unsigned)height) dsp->horizontal_compose97i(b1, width);
1247 static void spatial_compose97i_dy(DWTCompose *cs, IDWTELEM *buffer, int width, int height, int stride){
1249 IDWTELEM *b0= cs->b0;
1250 IDWTELEM *b1= cs->b1;
1251 IDWTELEM *b2= cs->b2;
1252 IDWTELEM *b3= cs->b3;
1253 IDWTELEM *b4= buffer + mirror(y+3, height-1)*stride;
1254 IDWTELEM *b5= buffer + mirror(y+4, height-1)*stride;
1256 if(y+3<(unsigned)height) vertical_compose97iL1(b3, b4, b5, width);
1257 if(y+2<(unsigned)height) vertical_compose97iH1(b2, b3, b4, width);
1258 if(y+1<(unsigned)height) vertical_compose97iL0(b1, b2, b3, width);
1259 if(y+0<(unsigned)height) vertical_compose97iH0(b0, b1, b2, width);
1261 if(y-1<(unsigned)height) ff_snow_horizontal_compose97i(b0, width);
1262 if(y+0<(unsigned)height) ff_snow_horizontal_compose97i(b1, width);
1271 static void av_unused spatial_compose97i(IDWTELEM *buffer, int width, int height, int stride){
1273 spatial_compose97i_init(&cs, buffer, height, stride);
1274 while(cs.y <= height)
1275 spatial_compose97i_dy(&cs, buffer, width, height, stride);
1278 static void ff_spatial_idwt_buffered_init(DWTCompose *cs, slice_buffer * sb, int width, int height, int stride_line, int type, int decomposition_count){
1280 for(level=decomposition_count-1; level>=0; level--){
1282 case DWT_97: spatial_compose97i_buffered_init(cs+level, sb, height>>level, stride_line<<level); break;
1283 case DWT_53: spatial_compose53i_buffered_init(cs+level, sb, height>>level, stride_line<<level); break;
1288 static void ff_spatial_idwt_init(DWTCompose *cs, IDWTELEM *buffer, int width, int height, int stride, int type, int decomposition_count){
1290 for(level=decomposition_count-1; level>=0; level--){
1292 case DWT_97: spatial_compose97i_init(cs+level, buffer, height>>level, stride<<level); break;
1293 case DWT_53: spatial_compose53i_init(cs+level, buffer, height>>level, stride<<level); break;
1298 static void ff_spatial_idwt_slice(DWTCompose *cs, IDWTELEM *buffer, int width, int height, int stride, int type, int decomposition_count, int y){
1299 const int support = type==1 ? 3 : 5;
1303 for(level=decomposition_count-1; level>=0; level--){
1304 while(cs[level].y <= FFMIN((y>>level)+support, height>>level)){
1306 case DWT_97: spatial_compose97i_dy(cs+level, buffer, width>>level, height>>level, stride<<level);
1308 case DWT_53: spatial_compose53i_dy(cs+level, buffer, width>>level, height>>level, stride<<level);
1315 static void ff_spatial_idwt_buffered_slice(DSPContext *dsp, DWTCompose *cs, slice_buffer * slice_buf, int width, int height, int stride_line, int type, int decomposition_count, int y){
1316 const int support = type==1 ? 3 : 5;
1320 for(level=decomposition_count-1; level>=0; level--){
1321 while(cs[level].y <= FFMIN((y>>level)+support, height>>level)){
1323 case DWT_97: spatial_compose97i_dy_buffered(dsp, cs+level, slice_buf, width>>level, height>>level, stride_line<<level);
1325 case DWT_53: spatial_compose53i_dy_buffered(cs+level, slice_buf, width>>level, height>>level, stride_line<<level);
1332 static void ff_spatial_idwt(IDWTELEM *buffer, int width, int height, int stride, int type, int decomposition_count){
1333 DWTCompose cs[MAX_DECOMPOSITIONS];
1335 ff_spatial_idwt_init(cs, buffer, width, height, stride, type, decomposition_count);
1336 for(y=0; y<height; y+=4)
1337 ff_spatial_idwt_slice(cs, buffer, width, height, stride, type, decomposition_count, y);
1340 static int encode_subband_c0run(SnowContext *s, SubBand *b, IDWTELEM *src, IDWTELEM *parent, int stride, int orientation){
1341 const int w= b->width;
1342 const int h= b->height;
1354 int /*ll=0, */l=0, lt=0, t=0, rt=0;
1355 v= src[x + y*stride];
1358 t= src[x + (y-1)*stride];
1360 lt= src[x - 1 + (y-1)*stride];
1363 rt= src[x + 1 + (y-1)*stride];
1367 l= src[x - 1 + y*stride];
1369 if(orientation==1) ll= src[y + (x-2)*stride];
1370 else ll= src[x - 2 + y*stride];
1376 if(px<b->parent->width && py<b->parent->height)
1377 p= parent[px + py*2*stride];
1379 if(!(/*ll|*/l|lt|t|rt|p)){
1381 runs[run_index++]= run;
1389 max_index= run_index;
1390 runs[run_index++]= run;
1392 run= runs[run_index++];
1394 put_symbol2(&s->c, b->state[30], max_index, 0);
1395 if(run_index <= max_index)
1396 put_symbol2(&s->c, b->state[1], run, 3);
1399 if(s->c.bytestream_end - s->c.bytestream < w*40){
1400 av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
1405 int /*ll=0, */l=0, lt=0, t=0, rt=0;
1406 v= src[x + y*stride];
1409 t= src[x + (y-1)*stride];
1411 lt= src[x - 1 + (y-1)*stride];
1414 rt= src[x + 1 + (y-1)*stride];
1418 l= src[x - 1 + y*stride];
1420 if(orientation==1) ll= src[y + (x-2)*stride];
1421 else ll= src[x - 2 + y*stride];
1427 if(px<b->parent->width && py<b->parent->height)
1428 p= parent[px + py*2*stride];
1430 if(/*ll|*/l|lt|t|rt|p){
1431 int context= av_log2(/*FFABS(ll) + */3*FFABS(l) + FFABS(lt) + 2*FFABS(t) + FFABS(rt) + FFABS(p));
1433 put_rac(&s->c, &b->state[0][context], !!v);
1436 run= runs[run_index++];
1438 if(run_index <= max_index)
1439 put_symbol2(&s->c, b->state[1], run, 3);
1447 int context= av_log2(/*FFABS(ll) + */3*FFABS(l) + FFABS(lt) + 2*FFABS(t) + FFABS(rt) + FFABS(p));
1448 int l2= 2*FFABS(l) + (l<0);
1449 int t2= 2*FFABS(t) + (t<0);
1451 put_symbol2(&s->c, b->state[context + 2], FFABS(v)-1, context-4);
1452 put_rac(&s->c, &b->state[0][16 + 1 + 3 + quant3bA[l2&0xFF] + 3*quant3bA[t2&0xFF]], v<0);
1460 static int encode_subband(SnowContext *s, SubBand *b, IDWTELEM *src, IDWTELEM *parent, int stride, int orientation){
1461 // encode_subband_qtree(s, b, src, parent, stride, orientation);
1462 // encode_subband_z0run(s, b, src, parent, stride, orientation);
1463 return encode_subband_c0run(s, b, src, parent, stride, orientation);
1464 // encode_subband_dzr(s, b, src, parent, stride, orientation);
1467 static inline void unpack_coeffs(SnowContext *s, SubBand *b, SubBand * parent, int orientation){
1468 const int w= b->width;
1469 const int h= b->height;
1474 x_and_coeff *xc= b->x_coeff;
1475 x_and_coeff *prev_xc= NULL;
1476 x_and_coeff *prev2_xc= xc;
1477 x_and_coeff *parent_xc= parent ? parent->x_coeff : NULL;
1478 x_and_coeff *prev_parent_xc= parent_xc;
1480 runs= get_symbol2(&s->c, b->state[30], 0);
1481 if(runs-- > 0) run= get_symbol2(&s->c, b->state[1], 3);
1486 int lt=0, t=0, rt=0;
1488 if(y && prev_xc->x == 0){
1500 if(prev_xc->x == x + 1)
1506 if(x>>1 > parent_xc->x){
1509 if(x>>1 == parent_xc->x){
1510 p= parent_xc->coeff;
1513 if(/*ll|*/l|lt|t|rt|p){
1514 int context= av_log2(/*FFABS(ll) + */3*(l>>1) + (lt>>1) + (t&~1) + (rt>>1) + (p>>1));
1516 v=get_rac(&s->c, &b->state[0][context]);
1518 v= 2*(get_symbol2(&s->c, b->state[context + 2], context-4) + 1);
1519 v+=get_rac(&s->c, &b->state[0][16 + 1 + 3 + quant3bA[l&0xFF] + 3*quant3bA[t&0xFF]]);
1526 if(runs-- > 0) run= get_symbol2(&s->c, b->state[1], 3);
1528 v= 2*(get_symbol2(&s->c, b->state[0 + 2], 0-4) + 1);
1529 v+=get_rac(&s->c, &b->state[0][16 + 1 + 3]);
1538 if(y) max_run= FFMIN(run, prev_xc->x - x - 2);
1539 else max_run= FFMIN(run, w-x-1);
1541 max_run= FFMIN(max_run, 2*parent_xc->x - x - 1);
1547 (xc++)->x= w+1; //end marker
1553 while(parent_xc->x != parent->width+1)
1556 prev_parent_xc= parent_xc;
1558 parent_xc= prev_parent_xc;
1563 (xc++)->x= w+1; //end marker
1567 static inline void decode_subband_slice_buffered(SnowContext *s, SubBand *b, slice_buffer * sb, int start_y, int h, int save_state[1]){
1568 const int w= b->width;
1570 const int qlog= av_clip(s->qlog + b->qlog, 0, QROOT*16);
1571 int qmul= qexp[qlog&(QROOT-1)]<<(qlog>>QSHIFT);
1572 int qadd= (s->qbias*qmul)>>QBIAS_SHIFT;
1575 if(b->ibuf == s->spatial_idwt_buffer || s->qlog == LOSSLESS_QLOG){
1580 /* If we are on the second or later slice, restore our index. */
1582 new_index = save_state[0];
1585 for(y=start_y; y<h; y++){
1588 IDWTELEM * line = slice_buffer_get_line(sb, y * b->stride_line + b->buf_y_offset) + b->buf_x_offset;
1589 memset(line, 0, b->width*sizeof(IDWTELEM));
1590 v = b->x_coeff[new_index].coeff;
1591 x = b->x_coeff[new_index++].x;
1593 register int t= ( (v>>1)*qmul + qadd)>>QEXPSHIFT;
1594 register int u= -(v&1);
1595 line[x] = (t^u) - u;
1597 v = b->x_coeff[new_index].coeff;
1598 x = b->x_coeff[new_index++].x;
1602 /* Save our variables for the next slice. */
1603 save_state[0] = new_index;
1608 static void reset_contexts(SnowContext *s){ //FIXME better initial contexts
1609 int plane_index, level, orientation;
1611 for(plane_index=0; plane_index<3; plane_index++){
1612 for(level=0; level<MAX_DECOMPOSITIONS; level++){
1613 for(orientation=level ? 1:0; orientation<4; orientation++){
1614 memset(s->plane[plane_index].band[level][orientation].state, MID_STATE, sizeof(s->plane[plane_index].band[level][orientation].state));
1618 memset(s->header_state, MID_STATE, sizeof(s->header_state));
1619 memset(s->block_state, MID_STATE, sizeof(s->block_state));
1622 static int alloc_blocks(SnowContext *s){
1623 int w= -((-s->avctx->width )>>LOG2_MB_SIZE);
1624 int h= -((-s->avctx->height)>>LOG2_MB_SIZE);
1629 s->block= av_mallocz(w * h * sizeof(BlockNode) << (s->block_max_depth*2));
1633 static inline void copy_rac_state(RangeCoder *d, RangeCoder *s){
1634 uint8_t *bytestream= d->bytestream;
1635 uint8_t *bytestream_start= d->bytestream_start;
1637 d->bytestream= bytestream;
1638 d->bytestream_start= bytestream_start;
1641 //near copy & paste from dsputil, FIXME
1642 static int pix_sum(uint8_t * pix, int line_size, int w)
1647 for (i = 0; i < w; i++) {
1648 for (j = 0; j < w; j++) {
1652 pix += line_size - w;
1657 //near copy & paste from dsputil, FIXME
1658 static int pix_norm1(uint8_t * pix, int line_size, int w)
1661 uint32_t *sq = ff_squareTbl + 256;
1664 for (i = 0; i < w; i++) {
1665 for (j = 0; j < w; j ++) {
1669 pix += line_size - w;
1674 static inline void set_blocks(SnowContext *s, int level, int x, int y, int l, int cb, int cr, int mx, int my, int ref, int type){
1675 const int w= s->b_width << s->block_max_depth;
1676 const int rem_depth= s->block_max_depth - level;
1677 const int index= (x + y*w) << rem_depth;
1678 const int block_w= 1<<rem_depth;
1691 for(j=0; j<block_w; j++){
1692 for(i=0; i<block_w; i++){
1693 s->block[index + i + j*w]= block;
1698 static inline void init_ref(MotionEstContext *c, uint8_t *src[3], uint8_t *ref[3], uint8_t *ref2[3], int x, int y, int ref_index){
1699 const int offset[3]= {
1701 ((y*c->uvstride + x)>>1),
1702 ((y*c->uvstride + x)>>1),
1706 c->src[0][i]= src [i];
1707 c->ref[0][i]= ref [i] + offset[i];
1712 static inline void pred_mv(SnowContext *s, int *mx, int *my, int ref,
1713 const BlockNode *left, const BlockNode *top, const BlockNode *tr){
1714 if(s->ref_frames == 1){
1715 *mx = mid_pred(left->mx, top->mx, tr->mx);
1716 *my = mid_pred(left->my, top->my, tr->my);
1718 const int *scale = scale_mv_ref[ref];
1719 *mx = mid_pred((left->mx * scale[left->ref] + 128) >>8,
1720 (top ->mx * scale[top ->ref] + 128) >>8,
1721 (tr ->mx * scale[tr ->ref] + 128) >>8);
1722 *my = mid_pred((left->my * scale[left->ref] + 128) >>8,
1723 (top ->my * scale[top ->ref] + 128) >>8,
1724 (tr ->my * scale[tr ->ref] + 128) >>8);
1731 #define P_TOPRIGHT P[3]
1732 #define P_MEDIAN P[4]
1734 #define FLAG_QPEL 1 //must be 1
1736 static int encode_q_branch(SnowContext *s, int level, int x, int y){
1737 uint8_t p_buffer[1024];
1738 uint8_t i_buffer[1024];
1739 uint8_t p_state[sizeof(s->block_state)];
1740 uint8_t i_state[sizeof(s->block_state)];
1742 uint8_t *pbbak= s->c.bytestream;
1743 uint8_t *pbbak_start= s->c.bytestream_start;
1744 int score, score2, iscore, i_len, p_len, block_s, sum, base_bits;
1745 const int w= s->b_width << s->block_max_depth;
1746 const int h= s->b_height << s->block_max_depth;
1747 const int rem_depth= s->block_max_depth - level;
1748 const int index= (x + y*w) << rem_depth;
1749 const int block_w= 1<<(LOG2_MB_SIZE - level);
1750 int trx= (x+1)<<rem_depth;
1751 int try= (y+1)<<rem_depth;
1752 const BlockNode *left = x ? &s->block[index-1] : &null_block;
1753 const BlockNode *top = y ? &s->block[index-w] : &null_block;
1754 const BlockNode *right = trx<w ? &s->block[index+1] : &null_block;
1755 const BlockNode *bottom= try<h ? &s->block[index+w] : &null_block;
1756 const BlockNode *tl = y && x ? &s->block[index-w-1] : left;
1757 const BlockNode *tr = y && trx<w && ((x&1)==0 || level==0) ? &s->block[index-w+(1<<rem_depth)] : tl; //FIXME use lt
1758 int pl = left->color[0];
1759 int pcb= left->color[1];
1760 int pcr= left->color[2];
1764 const int stride= s->current_picture.linesize[0];
1765 const int uvstride= s->current_picture.linesize[1];
1766 uint8_t *current_data[3]= { s->input_picture.data[0] + (x + y* stride)*block_w,
1767 s->input_picture.data[1] + (x + y*uvstride)*block_w/2,
1768 s->input_picture.data[2] + (x + y*uvstride)*block_w/2};
1770 int16_t last_mv[3][2];
1771 int qpel= !!(s->avctx->flags & CODEC_FLAG_QPEL); //unused
1772 const int shift= 1+qpel;
1773 MotionEstContext *c= &s->m.me;
1774 int ref_context= av_log2(2*left->ref) + av_log2(2*top->ref);
1775 int mx_context= av_log2(2*FFABS(left->mx - top->mx));
1776 int my_context= av_log2(2*FFABS(left->my - top->my));
1777 int s_context= 2*left->level + 2*top->level + tl->level + tr->level;
1778 int ref, best_ref, ref_score, ref_mx, ref_my;
1780 assert(sizeof(s->block_state) >= 256);
1782 set_blocks(s, level, x, y, pl, pcb, pcr, 0, 0, 0, BLOCK_INTRA);
1786 // clip predictors / edge ?
1788 P_LEFT[0]= left->mx;
1789 P_LEFT[1]= left->my;
1792 P_TOPRIGHT[0]= tr->mx;
1793 P_TOPRIGHT[1]= tr->my;
1795 last_mv[0][0]= s->block[index].mx;
1796 last_mv[0][1]= s->block[index].my;
1797 last_mv[1][0]= right->mx;
1798 last_mv[1][1]= right->my;
1799 last_mv[2][0]= bottom->mx;
1800 last_mv[2][1]= bottom->my;
1807 assert(c-> stride == stride);
1808 assert(c->uvstride == uvstride);
1810 c->penalty_factor = get_penalty_factor(s->lambda, s->lambda2, c->avctx->me_cmp);
1811 c->sub_penalty_factor= get_penalty_factor(s->lambda, s->lambda2, c->avctx->me_sub_cmp);
1812 c->mb_penalty_factor = get_penalty_factor(s->lambda, s->lambda2, c->avctx->mb_cmp);
1813 c->current_mv_penalty= c->mv_penalty[s->m.f_code=1] + MAX_MV;
1815 c->xmin = - x*block_w - 16+2;
1816 c->ymin = - y*block_w - 16+2;
1817 c->xmax = - (x+1)*block_w + (w<<(LOG2_MB_SIZE - s->block_max_depth)) + 16-2;
1818 c->ymax = - (y+1)*block_w + (h<<(LOG2_MB_SIZE - s->block_max_depth)) + 16-2;
1820 if(P_LEFT[0] > (c->xmax<<shift)) P_LEFT[0] = (c->xmax<<shift);
1821 if(P_LEFT[1] > (c->ymax<<shift)) P_LEFT[1] = (c->ymax<<shift);
1822 if(P_TOP[0] > (c->xmax<<shift)) P_TOP[0] = (c->xmax<<shift);
1823 if(P_TOP[1] > (c->ymax<<shift)) P_TOP[1] = (c->ymax<<shift);
1824 if(P_TOPRIGHT[0] < (c->xmin<<shift)) P_TOPRIGHT[0]= (c->xmin<<shift);
1825 if(P_TOPRIGHT[0] > (c->xmax<<shift)) P_TOPRIGHT[0]= (c->xmax<<shift); //due to pmx no clip
1826 if(P_TOPRIGHT[1] > (c->ymax<<shift)) P_TOPRIGHT[1]= (c->ymax<<shift);
1828 P_MEDIAN[0]= mid_pred(P_LEFT[0], P_TOP[0], P_TOPRIGHT[0]);
1829 P_MEDIAN[1]= mid_pred(P_LEFT[1], P_TOP[1], P_TOPRIGHT[1]);
1832 c->pred_x= P_LEFT[0];
1833 c->pred_y= P_LEFT[1];
1835 c->pred_x = P_MEDIAN[0];
1836 c->pred_y = P_MEDIAN[1];
1841 for(ref=0; ref<s->ref_frames; ref++){
1842 init_ref(c, current_data, s->last_picture[ref].data, NULL, block_w*x, block_w*y, 0);
1844 ref_score= ff_epzs_motion_search(&s->m, &ref_mx, &ref_my, P, 0, /*ref_index*/ 0, last_mv,
1845 (1<<16)>>shift, level-LOG2_MB_SIZE+4, block_w);
1847 assert(ref_mx >= c->xmin);
1848 assert(ref_mx <= c->xmax);
1849 assert(ref_my >= c->ymin);
1850 assert(ref_my <= c->ymax);
1852 ref_score= c->sub_motion_search(&s->m, &ref_mx, &ref_my, ref_score, 0, 0, level-LOG2_MB_SIZE+4, block_w);
1853 ref_score= ff_get_mb_score(&s->m, ref_mx, ref_my, 0, 0, level-LOG2_MB_SIZE+4, block_w, 0);
1854 ref_score+= 2*av_log2(2*ref)*c->penalty_factor;
1855 if(s->ref_mvs[ref]){
1856 s->ref_mvs[ref][index][0]= ref_mx;
1857 s->ref_mvs[ref][index][1]= ref_my;
1858 s->ref_scores[ref][index]= ref_score;
1860 if(score > ref_score){
1867 //FIXME if mb_cmp != SSE then intra cannot be compared currently and mb_penalty vs. lambda2
1870 base_bits= get_rac_count(&s->c) - 8*(s->c.bytestream - s->c.bytestream_start);
1872 pc.bytestream_start=
1873 pc.bytestream= p_buffer; //FIXME end/start? and at the other stoo
1874 memcpy(p_state, s->block_state, sizeof(s->block_state));
1876 if(level!=s->block_max_depth)
1877 put_rac(&pc, &p_state[4 + s_context], 1);
1878 put_rac(&pc, &p_state[1 + left->type + top->type], 0);
1879 if(s->ref_frames > 1)
1880 put_symbol(&pc, &p_state[128 + 1024 + 32*ref_context], best_ref, 0);
1881 pred_mv(s, &pmx, &pmy, best_ref, left, top, tr);
1882 put_symbol(&pc, &p_state[128 + 32*(mx_context + 16*!!best_ref)], mx - pmx, 1);
1883 put_symbol(&pc, &p_state[128 + 32*(my_context + 16*!!best_ref)], my - pmy, 1);
1884 p_len= pc.bytestream - pc.bytestream_start;
1885 score += (s->lambda2*(get_rac_count(&pc)-base_bits))>>FF_LAMBDA_SHIFT;
1887 block_s= block_w*block_w;
1888 sum = pix_sum(current_data[0], stride, block_w);
1889 l= (sum + block_s/2)/block_s;
1890 iscore = pix_norm1(current_data[0], stride, block_w) - 2*l*sum + l*l*block_s;
1892 block_s= block_w*block_w>>2;
1893 sum = pix_sum(current_data[1], uvstride, block_w>>1);
1894 cb= (sum + block_s/2)/block_s;
1895 // iscore += pix_norm1(¤t_mb[1][0], uvstride, block_w>>1) - 2*cb*sum + cb*cb*block_s;
1896 sum = pix_sum(current_data[2], uvstride, block_w>>1);
1897 cr= (sum + block_s/2)/block_s;
1898 // iscore += pix_norm1(¤t_mb[2][0], uvstride, block_w>>1) - 2*cr*sum + cr*cr*block_s;
1901 ic.bytestream_start=
1902 ic.bytestream= i_buffer; //FIXME end/start? and at the other stoo
1903 memcpy(i_state, s->block_state, sizeof(s->block_state));
1904 if(level!=s->block_max_depth)
1905 put_rac(&ic, &i_state[4 + s_context], 1);
1906 put_rac(&ic, &i_state[1 + left->type + top->type], 1);
1907 put_symbol(&ic, &i_state[32], l-pl , 1);
1908 put_symbol(&ic, &i_state[64], cb-pcb, 1);
1909 put_symbol(&ic, &i_state[96], cr-pcr, 1);
1910 i_len= ic.bytestream - ic.bytestream_start;
1911 iscore += (s->lambda2*(get_rac_count(&ic)-base_bits))>>FF_LAMBDA_SHIFT;
1913 // assert(score==256*256*256*64-1);
1914 assert(iscore < 255*255*256 + s->lambda2*10);
1915 assert(iscore >= 0);
1916 assert(l>=0 && l<=255);
1917 assert(pl>=0 && pl<=255);
1920 int varc= iscore >> 8;
1921 int vard= score >> 8;
1922 if (vard <= 64 || vard < varc)
1923 c->scene_change_score+= ff_sqrt(vard) - ff_sqrt(varc);
1925 c->scene_change_score+= s->m.qscale;
1928 if(level!=s->block_max_depth){
1929 put_rac(&s->c, &s->block_state[4 + s_context], 0);
1930 score2 = encode_q_branch(s, level+1, 2*x+0, 2*y+0);
1931 score2+= encode_q_branch(s, level+1, 2*x+1, 2*y+0);
1932 score2+= encode_q_branch(s, level+1, 2*x+0, 2*y+1);
1933 score2+= encode_q_branch(s, level+1, 2*x+1, 2*y+1);
1934 score2+= s->lambda2>>FF_LAMBDA_SHIFT; //FIXME exact split overhead
1936 if(score2 < score && score2 < iscore)
1941 pred_mv(s, &pmx, &pmy, 0, left, top, tr);
1942 memcpy(pbbak, i_buffer, i_len);
1944 s->c.bytestream_start= pbbak_start;
1945 s->c.bytestream= pbbak + i_len;
1946 set_blocks(s, level, x, y, l, cb, cr, pmx, pmy, 0, BLOCK_INTRA);
1947 memcpy(s->block_state, i_state, sizeof(s->block_state));
1950 memcpy(pbbak, p_buffer, p_len);
1952 s->c.bytestream_start= pbbak_start;
1953 s->c.bytestream= pbbak + p_len;
1954 set_blocks(s, level, x, y, pl, pcb, pcr, mx, my, best_ref, 0);
1955 memcpy(s->block_state, p_state, sizeof(s->block_state));
1960 static av_always_inline int same_block(BlockNode *a, BlockNode *b){
1961 if((a->type&BLOCK_INTRA) && (b->type&BLOCK_INTRA)){
1962 return !((a->color[0] - b->color[0]) | (a->color[1] - b->color[1]) | (a->color[2] - b->color[2]));
1964 return !((a->mx - b->mx) | (a->my - b->my) | (a->ref - b->ref) | ((a->type ^ b->type)&BLOCK_INTRA));
1968 static void encode_q_branch2(SnowContext *s, int level, int x, int y){
1969 const int w= s->b_width << s->block_max_depth;
1970 const int rem_depth= s->block_max_depth - level;
1971 const int index= (x + y*w) << rem_depth;
1972 int trx= (x+1)<<rem_depth;
1973 BlockNode *b= &s->block[index];
1974 const BlockNode *left = x ? &s->block[index-1] : &null_block;
1975 const BlockNode *top = y ? &s->block[index-w] : &null_block;
1976 const BlockNode *tl = y && x ? &s->block[index-w-1] : left;
1977 const BlockNode *tr = y && trx<w && ((x&1)==0 || level==0) ? &s->block[index-w+(1<<rem_depth)] : tl; //FIXME use lt
1978 int pl = left->color[0];
1979 int pcb= left->color[1];
1980 int pcr= left->color[2];
1982 int ref_context= av_log2(2*left->ref) + av_log2(2*top->ref);
1983 int mx_context= av_log2(2*FFABS(left->mx - top->mx)) + 16*!!b->ref;
1984 int my_context= av_log2(2*FFABS(left->my - top->my)) + 16*!!b->ref;
1985 int s_context= 2*left->level + 2*top->level + tl->level + tr->level;
1988 set_blocks(s, level, x, y, pl, pcb, pcr, 0, 0, 0, BLOCK_INTRA);
1992 if(level!=s->block_max_depth){
1993 if(same_block(b,b+1) && same_block(b,b+w) && same_block(b,b+w+1)){
1994 put_rac(&s->c, &s->block_state[4 + s_context], 1);
1996 put_rac(&s->c, &s->block_state[4 + s_context], 0);
1997 encode_q_branch2(s, level+1, 2*x+0, 2*y+0);
1998 encode_q_branch2(s, level+1, 2*x+1, 2*y+0);
1999 encode_q_branch2(s, level+1, 2*x+0, 2*y+1);
2000 encode_q_branch2(s, level+1, 2*x+1, 2*y+1);
2004 if(b->type & BLOCK_INTRA){
2005 pred_mv(s, &pmx, &pmy, 0, left, top, tr);
2006 put_rac(&s->c, &s->block_state[1 + (left->type&1) + (top->type&1)], 1);
2007 put_symbol(&s->c, &s->block_state[32], b->color[0]-pl , 1);
2008 put_symbol(&s->c, &s->block_state[64], b->color[1]-pcb, 1);
2009 put_symbol(&s->c, &s->block_state[96], b->color[2]-pcr, 1);
2010 set_blocks(s, level, x, y, b->color[0], b->color[1], b->color[2], pmx, pmy, 0, BLOCK_INTRA);
2012 pred_mv(s, &pmx, &pmy, b->ref, left, top, tr);
2013 put_rac(&s->c, &s->block_state[1 + (left->type&1) + (top->type&1)], 0);
2014 if(s->ref_frames > 1)
2015 put_symbol(&s->c, &s->block_state[128 + 1024 + 32*ref_context], b->ref, 0);
2016 put_symbol(&s->c, &s->block_state[128 + 32*mx_context], b->mx - pmx, 1);
2017 put_symbol(&s->c, &s->block_state[128 + 32*my_context], b->my - pmy, 1);
2018 set_blocks(s, level, x, y, pl, pcb, pcr, b->mx, b->my, b->ref, 0);
2022 static void decode_q_branch(SnowContext *s, int level, int x, int y){
2023 const int w= s->b_width << s->block_max_depth;
2024 const int rem_depth= s->block_max_depth - level;
2025 const int index= (x + y*w) << rem_depth;
2026 int trx= (x+1)<<rem_depth;
2027 const BlockNode *left = x ? &s->block[index-1] : &null_block;
2028 const BlockNode *top = y ? &s->block[index-w] : &null_block;
2029 const BlockNode *tl = y && x ? &s->block[index-w-1] : left;
2030 const BlockNode *tr = y && trx<w && ((x&1)==0 || level==0) ? &s->block[index-w+(1<<rem_depth)] : tl; //FIXME use lt
2031 int s_context= 2*left->level + 2*top->level + tl->level + tr->level;
2034 set_blocks(s, level, x, y, null_block.color[0], null_block.color[1], null_block.color[2], null_block.mx, null_block.my, null_block.ref, BLOCK_INTRA);
2038 if(level==s->block_max_depth || get_rac(&s->c, &s->block_state[4 + s_context])){
2040 int l = left->color[0];
2041 int cb= left->color[1];
2042 int cr= left->color[2];
2044 int ref_context= av_log2(2*left->ref) + av_log2(2*top->ref);
2045 int mx_context= av_log2(2*FFABS(left->mx - top->mx)) + 0*av_log2(2*FFABS(tr->mx - top->mx));
2046 int my_context= av_log2(2*FFABS(left->my - top->my)) + 0*av_log2(2*FFABS(tr->my - top->my));
2048 type= get_rac(&s->c, &s->block_state[1 + left->type + top->type]) ? BLOCK_INTRA : 0;
2051 pred_mv(s, &mx, &my, 0, left, top, tr);
2052 l += get_symbol(&s->c, &s->block_state[32], 1);
2053 cb+= get_symbol(&s->c, &s->block_state[64], 1);
2054 cr+= get_symbol(&s->c, &s->block_state[96], 1);
2056 if(s->ref_frames > 1)
2057 ref= get_symbol(&s->c, &s->block_state[128 + 1024 + 32*ref_context], 0);
2058 pred_mv(s, &mx, &my, ref, left, top, tr);
2059 mx+= get_symbol(&s->c, &s->block_state[128 + 32*(mx_context + 16*!!ref)], 1);
2060 my+= get_symbol(&s->c, &s->block_state[128 + 32*(my_context + 16*!!ref)], 1);
2062 set_blocks(s, level, x, y, l, cb, cr, mx, my, ref, type);
2064 decode_q_branch(s, level+1, 2*x+0, 2*y+0);
2065 decode_q_branch(s, level+1, 2*x+1, 2*y+0);
2066 decode_q_branch(s, level+1, 2*x+0, 2*y+1);
2067 decode_q_branch(s, level+1, 2*x+1, 2*y+1);
2071 static void encode_blocks(SnowContext *s, int search){
2076 if(s->avctx->me_method == ME_ITER && !s->keyframe && search)
2080 if(s->c.bytestream_end - s->c.bytestream < w*MB_SIZE*MB_SIZE*3){ //FIXME nicer limit
2081 av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
2085 if(s->avctx->me_method == ME_ITER || !search)
2086 encode_q_branch2(s, 0, x, y);
2088 encode_q_branch (s, 0, x, y);
2093 static void decode_blocks(SnowContext *s){
2100 decode_q_branch(s, 0, x, y);
2105 static void mc_block(Plane *p, uint8_t *dst, const uint8_t *src, uint8_t *tmp, int stride, int b_w, int b_h, int dx, int dy){
2106 static const uint8_t weight[64]={
2117 static const uint8_t brane[256]={
2118 0x00,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x11,0x12,0x12,0x12,0x12,0x12,0x12,0x12,
2119 0x04,0x05,0xcc,0xcc,0xcc,0xcc,0xcc,0x41,0x15,0x16,0xcc,0xcc,0xcc,0xcc,0xcc,0x52,
2120 0x04,0xcc,0x05,0xcc,0xcc,0xcc,0x41,0xcc,0x15,0xcc,0x16,0xcc,0xcc,0xcc,0x52,0xcc,
2121 0x04,0xcc,0xcc,0x05,0xcc,0x41,0xcc,0xcc,0x15,0xcc,0xcc,0x16,0xcc,0x52,0xcc,0xcc,
2122 0x04,0xcc,0xcc,0xcc,0x41,0xcc,0xcc,0xcc,0x15,0xcc,0xcc,0xcc,0x16,0xcc,0xcc,0xcc,
2123 0x04,0xcc,0xcc,0x41,0xcc,0x05,0xcc,0xcc,0x15,0xcc,0xcc,0x52,0xcc,0x16,0xcc,0xcc,
2124 0x04,0xcc,0x41,0xcc,0xcc,0xcc,0x05,0xcc,0x15,0xcc,0x52,0xcc,0xcc,0xcc,0x16,0xcc,
2125 0x04,0x41,0xcc,0xcc,0xcc,0xcc,0xcc,0x05,0x15,0x52,0xcc,0xcc,0xcc,0xcc,0xcc,0x16,
2126 0x44,0x45,0x45,0x45,0x45,0x45,0x45,0x45,0x55,0x56,0x56,0x56,0x56,0x56,0x56,0x56,
2127 0x48,0x49,0xcc,0xcc,0xcc,0xcc,0xcc,0x85,0x59,0x5A,0xcc,0xcc,0xcc,0xcc,0xcc,0x96,
2128 0x48,0xcc,0x49,0xcc,0xcc,0xcc,0x85,0xcc,0x59,0xcc,0x5A,0xcc,0xcc,0xcc,0x96,0xcc,
2129 0x48,0xcc,0xcc,0x49,0xcc,0x85,0xcc,0xcc,0x59,0xcc,0xcc,0x5A,0xcc,0x96,0xcc,0xcc,
2130 0x48,0xcc,0xcc,0xcc,0x49,0xcc,0xcc,0xcc,0x59,0xcc,0xcc,0xcc,0x96,0xcc,0xcc,0xcc,
2131 0x48,0xcc,0xcc,0x85,0xcc,0x49,0xcc,0xcc,0x59,0xcc,0xcc,0x96,0xcc,0x5A,0xcc,0xcc,
2132 0x48,0xcc,0x85,0xcc,0xcc,0xcc,0x49,0xcc,0x59,0xcc,0x96,0xcc,0xcc,0xcc,0x5A,0xcc,
2133 0x48,0x85,0xcc,0xcc,0xcc,0xcc,0xcc,0x49,0x59,0x96,0xcc,0xcc,0xcc,0xcc,0xcc,0x5A,
2136 static const uint8_t needs[16]={
2144 int16_t tmpIt [64*(32+HTAPS_MAX)];
2145 uint8_t tmp2t[3][stride*(32+HTAPS_MAX)];
2146 int16_t *tmpI= tmpIt;
2147 uint8_t *tmp2= tmp2t[0];
2148 const uint8_t *hpel[11];
2149 assert(dx<16 && dy<16);
2150 r= brane[dx + 16*dy]&15;
2151 l= brane[dx + 16*dy]>>4;
2153 b= needs[l] | needs[r];
2154 if(p && !p->diag_mc)
2158 for(y=0; y < b_h+HTAPS_MAX-1; y++){
2159 for(x=0; x < b_w; x++){
2160 int a_1=src[x + HTAPS_MAX/2-4];
2161 int a0= src[x + HTAPS_MAX/2-3];
2162 int a1= src[x + HTAPS_MAX/2-2];
2163 int a2= src[x + HTAPS_MAX/2-1];
2164 int a3= src[x + HTAPS_MAX/2+0];
2165 int a4= src[x + HTAPS_MAX/2+1];
2166 int a5= src[x + HTAPS_MAX/2+2];
2167 int a6= src[x + HTAPS_MAX/2+3];
2169 if(!p || p->fast_mc){
2170 am= 20*(a2+a3) - 5*(a1+a4) + (a0+a5);
2174 am= p->hcoeff[0]*(a2+a3) + p->hcoeff[1]*(a1+a4) + p->hcoeff[2]*(a0+a5) + p->hcoeff[3]*(a_1+a6);
2179 if(am&(~255)) am= ~(am>>31);
2188 src += HTAPS_MAX/2 - 1;
2192 for(y=0; y < b_h; y++){
2193 for(x=0; x < b_w+1; x++){
2194 int a_1=src[x + (HTAPS_MAX/2-4)*stride];
2195 int a0= src[x + (HTAPS_MAX/2-3)*stride];
2196 int a1= src[x + (HTAPS_MAX/2-2)*stride];
2197 int a2= src[x + (HTAPS_MAX/2-1)*stride];
2198 int a3= src[x + (HTAPS_MAX/2+0)*stride];
2199 int a4= src[x + (HTAPS_MAX/2+1)*stride];
2200 int a5= src[x + (HTAPS_MAX/2+2)*stride];
2201 int a6= src[x + (HTAPS_MAX/2+3)*stride];
2203 if(!p || p->fast_mc)
2204 am= (20*(a2+a3) - 5*(a1+a4) + (a0+a5) + 16)>>5;
2206 am= (p->hcoeff[0]*(a2+a3) + p->hcoeff[1]*(a1+a4) + p->hcoeff[2]*(a0+a5) + p->hcoeff[3]*(a_1+a6) + 32)>>6;
2208 if(am&(~255)) am= ~(am>>31);
2216 src += stride*(HTAPS_MAX/2 - 1);
2220 for(y=0; y < b_h; y++){
2221 for(x=0; x < b_w; x++){
2222 int a_1=tmpI[x + (HTAPS_MAX/2-4)*64];
2223 int a0= tmpI[x + (HTAPS_MAX/2-3)*64];
2224 int a1= tmpI[x + (HTAPS_MAX/2-2)*64];
2225 int a2= tmpI[x + (HTAPS_MAX/2-1)*64];
2226 int a3= tmpI[x + (HTAPS_MAX/2+0)*64];
2227 int a4= tmpI[x + (HTAPS_MAX/2+1)*64];
2228 int a5= tmpI[x + (HTAPS_MAX/2+2)*64];
2229 int a6= tmpI[x + (HTAPS_MAX/2+3)*64];
2231 if(!p || p->fast_mc)
2232 am= (20*(a2+a3) - 5*(a1+a4) + (a0+a5) + 512)>>10;
2234 am= (p->hcoeff[0]*(a2+a3) + p->hcoeff[1]*(a1+a4) + p->hcoeff[2]*(a0+a5) + p->hcoeff[3]*(a_1+a6) + 2048)>>12;
2235 if(am&(~255)) am= ~(am>>31);
2244 hpel[ 1]= tmp2t[0] + stride*(HTAPS_MAX/2-1);
2249 hpel[ 6]= tmp2t[1] + 1;
2251 hpel[ 8]= src + stride;
2252 hpel[ 9]= hpel[1] + stride;
2253 hpel[10]= hpel[8] + 1;
2256 const uint8_t *src1= hpel[dx/8 + dy/8*4 ];
2257 const uint8_t *src2= hpel[dx/8 + dy/8*4+1];
2258 const uint8_t *src3= hpel[dx/8 + dy/8*4+4];
2259 const uint8_t *src4= hpel[dx/8 + dy/8*4+5];
2262 for(y=0; y < b_h; y++){
2263 for(x=0; x < b_w; x++){
2264 dst[x]= ((8-dx)*(8-dy)*src1[x] + dx*(8-dy)*src2[x]+
2265 (8-dx)* dy *src3[x] + dx* dy *src4[x]+32)>>6;
2274 const uint8_t *src1= hpel[l];
2275 const uint8_t *src2= hpel[r];
2276 int a= weight[((dx&7) + (8*(dy&7)))];
2278 for(y=0; y < b_h; y++){
2279 for(x=0; x < b_w; x++){
2280 dst[x]= (a*src1[x] + b*src2[x] + 4)>>3;
2289 #define mca(dx,dy,b_w)\
2290 static void mc_block_hpel ## dx ## dy ## b_w(uint8_t *dst, const uint8_t *src, int stride, int h){\
2291 uint8_t tmp[stride*(b_w+HTAPS_MAX-1)];\
2293 mc_block(NULL, dst, src-(HTAPS_MAX/2-1)-(HTAPS_MAX/2-1)*stride, tmp, stride, b_w, b_w, dx, dy);\
2305 static void pred_block(SnowContext *s, uint8_t *dst, uint8_t *tmp, int stride, int sx, int sy, int b_w, int b_h, BlockNode *block, int plane_index, int w, int h){
2306 if(block->type & BLOCK_INTRA){
2308 const int color = block->color[plane_index];
2309 const int color4= color*0x01010101;
2311 for(y=0; y < b_h; y++){
2312 *(uint32_t*)&dst[0 + y*stride]= color4;
2313 *(uint32_t*)&dst[4 + y*stride]= color4;
2314 *(uint32_t*)&dst[8 + y*stride]= color4;
2315 *(uint32_t*)&dst[12+ y*stride]= color4;
2316 *(uint32_t*)&dst[16+ y*stride]= color4;
2317 *(uint32_t*)&dst[20+ y*stride]= color4;
2318 *(uint32_t*)&dst[24+ y*stride]= color4;
2319 *(uint32_t*)&dst[28+ y*stride]= color4;
2322 for(y=0; y < b_h; y++){
2323 *(uint32_t*)&dst[0 + y*stride]= color4;
2324 *(uint32_t*)&dst[4 + y*stride]= color4;
2325 *(uint32_t*)&dst[8 + y*stride]= color4;
2326 *(uint32_t*)&dst[12+ y*stride]= color4;
2329 for(y=0; y < b_h; y++){
2330 *(uint32_t*)&dst[0 + y*stride]= color4;
2331 *(uint32_t*)&dst[4 + y*stride]= color4;
2334 for(y=0; y < b_h; y++){
2335 *(uint32_t*)&dst[0 + y*stride]= color4;
2338 for(y=0; y < b_h; y++){
2339 for(x=0; x < b_w; x++){
2340 dst[x + y*stride]= color;
2345 uint8_t *src= s->last_picture[block->ref].data[plane_index];
2346 const int scale= plane_index ? s->mv_scale : 2*s->mv_scale;
2347 int mx= block->mx*scale;
2348 int my= block->my*scale;
2349 const int dx= mx&15;
2350 const int dy= my&15;
2351 const int tab_index= 3 - (b_w>>2) + (b_w>>4);
2352 sx += (mx>>4) - (HTAPS_MAX/2-1);
2353 sy += (my>>4) - (HTAPS_MAX/2-1);
2354 src += sx + sy*stride;
2355 if( (unsigned)sx >= w - b_w - (HTAPS_MAX-2)
2356 || (unsigned)sy >= h - b_h - (HTAPS_MAX-2)){
2357 ff_emulated_edge_mc(tmp + MB_SIZE, src, stride, b_w+HTAPS_MAX-1, b_h+HTAPS_MAX-1, sx, sy, w, h);
2360 // assert(b_w == b_h || 2*b_w == b_h || b_w == 2*b_h);
2361 // assert(!(b_w&(b_w-1)));
2362 assert(b_w>1 && b_h>1);
2363 assert((tab_index>=0 && tab_index<4) || b_w==32);
2364 if((dx&3) || (dy&3) || !(b_w == b_h || 2*b_w == b_h || b_w == 2*b_h) || (b_w&(b_w-1)) || !s->plane[plane_index].fast_mc )
2365 mc_block(&s->plane[plane_index], dst, src, tmp, stride, b_w, b_h, dx, dy);
2368 for(y=0; y<b_h; y+=16){
2369 s->dsp.put_h264_qpel_pixels_tab[0][dy+(dx>>2)](dst + y*stride, src + 3 + (y+3)*stride,stride);
2370 s->dsp.put_h264_qpel_pixels_tab[0][dy+(dx>>2)](dst + 16 + y*stride, src + 19 + (y+3)*stride,stride);
2373 s->dsp.put_h264_qpel_pixels_tab[tab_index ][dy+(dx>>2)](dst,src + 3 + 3*stride,stride);
2374 else if(b_w==2*b_h){
2375 s->dsp.put_h264_qpel_pixels_tab[tab_index+1][dy+(dx>>2)](dst ,src + 3 + 3*stride,stride);
2376 s->dsp.put_h264_qpel_pixels_tab[tab_index+1][dy+(dx>>2)](dst+b_h,src + 3 + b_h + 3*stride,stride);
2379 s->dsp.put_h264_qpel_pixels_tab[tab_index ][dy+(dx>>2)](dst ,src + 3 + 3*stride ,stride);
2380 s->dsp.put_h264_qpel_pixels_tab[tab_index ][dy+(dx>>2)](dst+b_w*stride,src + 3 + 3*stride+b_w*stride,stride);
2385 void ff_snow_inner_add_yblock(const uint8_t *obmc, const int obmc_stride, uint8_t * * block, int b_w, int b_h,
2386 int src_x, int src_y, int src_stride, slice_buffer * sb, int add, uint8_t * dst8){
2389 for(y=0; y<b_h; y++){
2390 //FIXME ugly misuse of obmc_stride
2391 const uint8_t *obmc1= obmc + y*obmc_stride;
2392 const uint8_t *obmc2= obmc1+ (obmc_stride>>1);
2393 const uint8_t *obmc3= obmc1+ obmc_stride*(obmc_stride>>1);
2394 const uint8_t *obmc4= obmc3+ (obmc_stride>>1);
2395 dst = slice_buffer_get_line(sb, src_y + y);
2396 for(x=0; x<b_w; x++){
2397 int v= obmc1[x] * block[3][x + y*src_stride]
2398 +obmc2[x] * block[2][x + y*src_stride]
2399 +obmc3[x] * block[1][x + y*src_stride]
2400 +obmc4[x] * block[0][x + y*src_stride];
2402 v <<= 8 - LOG2_OBMC_MAX;
2404 v >>= 8 - FRAC_BITS;
2407 v += dst[x + src_x];
2408 v = (v + (1<<(FRAC_BITS-1))) >> FRAC_BITS;
2409 if(v&(~255)) v= ~(v>>31);
2410 dst8[x + y*src_stride] = v;
2412 dst[x + src_x] -= v;
2418 //FIXME name cleanup (b_w, block_w, b_width stuff)
2419 static av_always_inline void add_yblock(SnowContext *s, int sliced, slice_buffer *sb, IDWTELEM *dst, uint8_t *dst8, const uint8_t *obmc, int src_x, int src_y, int b_w, int b_h, int w, int h, int dst_stride, int src_stride, int obmc_stride, int b_x, int b_y, int add, int offset_dst, int plane_index){
2420 const int b_width = s->b_width << s->block_max_depth;
2421 const int b_height= s->b_height << s->block_max_depth;
2422 const int b_stride= b_width;
2423 BlockNode *lt= &s->block[b_x + b_y*b_stride];
2424 BlockNode *rt= lt+1;
2425 BlockNode *lb= lt+b_stride;
2426 BlockNode *rb= lb+1;
2428 int tmp_step= src_stride >= 7*MB_SIZE ? MB_SIZE : MB_SIZE*src_stride;
2429 uint8_t *tmp = s->scratchbuf;
2436 }else if(b_x + 1 >= b_width){
2443 }else if(b_y + 1 >= b_height){
2448 if(src_x<0){ //FIXME merge with prev & always round internal width up to *16
2451 if(!sliced && !offset_dst)
2454 }else if(src_x + b_w > w){
2458 obmc -= src_y*obmc_stride;
2460 if(!sliced && !offset_dst)
2461 dst -= src_y*dst_stride;
2463 }else if(src_y + b_h> h){
2467 if(b_w<=0 || b_h<=0) return;
2469 assert(src_stride > 2*MB_SIZE + 5);
2471 if(!sliced && offset_dst)
2472 dst += src_x + src_y*dst_stride;
2473 dst8+= src_x + src_y*src_stride;
2474 // src += src_x + src_y*src_stride;
2476 ptmp= tmp + 3*tmp_step;
2479 pred_block(s, block[0], tmp, src_stride, src_x, src_y, b_w, b_h, lt, plane_index, w, h);
2481 if(same_block(lt, rt)){
2486 pred_block(s, block[1], tmp, src_stride, src_x, src_y, b_w, b_h, rt, plane_index, w, h);
2489 if(same_block(lt, lb)){
2491 }else if(same_block(rt, lb)){
2496 pred_block(s, block[2], tmp, src_stride, src_x, src_y, b_w, b_h, lb, plane_index, w, h);
2499 if(same_block(lt, rb) ){
2501 }else if(same_block(rt, rb)){
2503 }else if(same_block(lb, rb)){
2507 pred_block(s, block[3], tmp, src_stride, src_x, src_y, b_w, b_h, rb, plane_index, w, h);
2510 for(y=0; y<b_h; y++){
2511 for(x=0; x<b_w; x++){
2512 int v= obmc [x + y*obmc_stride] * block[3][x + y*src_stride] * (256/OBMC_MAX);
2513 if(add) dst[x + y*dst_stride] += v;
2514 else dst[x + y*dst_stride] -= v;
2517 for(y=0; y<b_h; y++){
2518 uint8_t *obmc2= obmc + (obmc_stride>>1);
2519 for(x=0; x<b_w; x++){
2520 int v= obmc2[x + y*obmc_stride] * block[2][x + y*src_stride] * (256/OBMC_MAX);
2521 if(add) dst[x + y*dst_stride] += v;
2522 else dst[x + y*dst_stride] -= v;
2525 for(y=0; y<b_h; y++){
2526 uint8_t *obmc3= obmc + obmc_stride*(obmc_stride>>1);
2527 for(x=0; x<b_w; x++){
2528 int v= obmc3[x + y*obmc_stride] * block[1][x + y*src_stride] * (256/OBMC_MAX);
2529 if(add) dst[x + y*dst_stride] += v;
2530 else dst[x + y*dst_stride] -= v;
2533 for(y=0; y<b_h; y++){
2534 uint8_t *obmc3= obmc + obmc_stride*(obmc_stride>>1);
2535 uint8_t *obmc4= obmc3+ (obmc_stride>>1);
2536 for(x=0; x<b_w; x++){
2537 int v= obmc4[x + y*obmc_stride] * block[0][x + y*src_stride] * (256/OBMC_MAX);
2538 if(add) dst[x + y*dst_stride] += v;
2539 else dst[x + y*dst_stride] -= v;
2544 s->dsp.inner_add_yblock(obmc, obmc_stride, block, b_w, b_h, src_x,src_y, src_stride, sb, add, dst8);
2546 for(y=0; y<b_h; y++){
2547 //FIXME ugly misuse of obmc_stride
2548 const uint8_t *obmc1= obmc + y*obmc_stride;
2549 const uint8_t *obmc2= obmc1+ (obmc_stride>>1);
2550 const uint8_t *obmc3= obmc1+ obmc_stride*(obmc_stride>>1);
2551 const uint8_t *obmc4= obmc3+ (obmc_stride>>1);
2552 for(x=0; x<b_w; x++){
2553 int v= obmc1[x] * block[3][x + y*src_stride]
2554 +obmc2[x] * block[2][x + y*src_stride]
2555 +obmc3[x] * block[1][x + y*src_stride]
2556 +obmc4[x] * block[0][x + y*src_stride];
2558 v <<= 8 - LOG2_OBMC_MAX;
2560 v >>= 8 - FRAC_BITS;
2563 v += dst[x + y*dst_stride];
2564 v = (v + (1<<(FRAC_BITS-1))) >> FRAC_BITS;
2565 if(v&(~255)) v= ~(v>>31);
2566 dst8[x + y*src_stride] = v;
2568 dst[x + y*dst_stride] -= v;
2576 static av_always_inline void predict_slice_buffered(SnowContext *s, slice_buffer * sb, IDWTELEM * old_buffer, int plane_index, int add, int mb_y){
2577 Plane *p= &s->plane[plane_index];
2578 const int mb_w= s->b_width << s->block_max_depth;
2579 const int mb_h= s->b_height << s->block_max_depth;
2581 int block_size = MB_SIZE >> s->block_max_depth;
2582 int block_w = plane_index ? block_size/2 : block_size;
2583 const uint8_t *obmc = plane_index ? obmc_tab[s->block_max_depth+1] : obmc_tab[s->block_max_depth];
2584 int obmc_stride= plane_index ? block_size : 2*block_size;
2585 int ref_stride= s->current_picture.linesize[plane_index];
2586 uint8_t *dst8= s->current_picture.data[plane_index];
2590 if(s->keyframe || (s->avctx->debug&512)){
2595 for(y=block_w*mb_y; y<FFMIN(h,block_w*(mb_y+1)); y++){
2596 // DWTELEM * line = slice_buffer_get_line(sb, y);
2597 IDWTELEM * line = sb->line[y];
2599 // int v= buf[x + y*w] + (128<<FRAC_BITS) + (1<<(FRAC_BITS-1));
2600 int v= line[x] + (128<<FRAC_BITS) + (1<<(FRAC_BITS-1));
2602 if(v&(~255)) v= ~(v>>31);
2603 dst8[x + y*ref_stride]= v;
2607 for(y=block_w*mb_y; y<FFMIN(h,block_w*(mb_y+1)); y++){
2608 // DWTELEM * line = slice_buffer_get_line(sb, y);
2609 IDWTELEM * line = sb->line[y];
2611 line[x] -= 128 << FRAC_BITS;
2612 // buf[x + y*w]-= 128<<FRAC_BITS;
2620 for(mb_x=0; mb_x<=mb_w; mb_x++){
2621 add_yblock(s, 1, sb, old_buffer, dst8, obmc,
2622 block_w*mb_x - block_w/2,
2623 block_w*mb_y - block_w/2,
2626 w, ref_stride, obmc_stride,
2628 add, 0, plane_index);
2632 static av_always_inline void predict_slice(SnowContext *s, IDWTELEM *buf, int plane_index, int add, int mb_y){
2633 Plane *p= &s->plane[plane_index];
2634 const int mb_w= s->b_width << s->block_max_depth;
2635 const int mb_h= s->b_height << s->block_max_depth;
2637 int block_size = MB_SIZE >> s->block_max_depth;
2638 int block_w = plane_index ? block_size/2 : block_size;
2639 const uint8_t *obmc = plane_index ? obmc_tab[s->block_max_depth+1] : obmc_tab[s->block_max_depth];
2640 const int obmc_stride= plane_index ? block_size : 2*block_size;
2641 int ref_stride= s->current_picture.linesize[plane_index];
2642 uint8_t *dst8= s->current_picture.data[plane_index];
2646 if(s->keyframe || (s->avctx->debug&512)){
2651 for(y=block_w*mb_y; y<FFMIN(h,block_w*(mb_y+1)); y++){
2653 int v= buf[x + y*w] + (128<<FRAC_BITS) + (1<<(FRAC_BITS-1));
2655 if(v&(~255)) v= ~(v>>31);
2656 dst8[x + y*ref_stride]= v;
2660 for(y=block_w*mb_y; y<FFMIN(h,block_w*(mb_y+1)); y++){
2662 buf[x + y*w]-= 128<<FRAC_BITS;
2670 for(mb_x=0; mb_x<=mb_w; mb_x++){
2671 add_yblock(s, 0, NULL, buf, dst8, obmc,
2672 block_w*mb_x - block_w/2,
2673 block_w*mb_y - block_w/2,
2676 w, ref_stride, obmc_stride,
2678 add, 1, plane_index);
2682 static av_always_inline void predict_plane(SnowContext *s, IDWTELEM *buf, int plane_index, int add){
2683 const int mb_h= s->b_height << s->block_max_depth;
2685 for(mb_y=0; mb_y<=mb_h; mb_y++)
2686 predict_slice(s, buf, plane_index, add, mb_y);
2689 static int get_dc(SnowContext *s, int mb_x, int mb_y, int plane_index){
2691 Plane *p= &s->plane[plane_index];
2692 const int block_size = MB_SIZE >> s->block_max_depth;
2693 const int block_w = plane_index ? block_size/2 : block_size;
2694 const uint8_t *obmc = plane_index ? obmc_tab[s->block_max_depth+1] : obmc_tab[s->block_max_depth];
2695 const int obmc_stride= plane_index ? block_size : 2*block_size;
2696 const int ref_stride= s->current_picture.linesize[plane_index];
2697 uint8_t *src= s-> input_picture.data[plane_index];
2698 IDWTELEM *dst= (IDWTELEM*)s->m.obmc_scratchpad + plane_index*block_size*block_size*4; //FIXME change to unsigned
2699 const int b_stride = s->b_width << s->block_max_depth;
2700 const int w= p->width;
2701 const int h= p->height;
2702 int index= mb_x + mb_y*b_stride;
2703 BlockNode *b= &s->block[index];
2704 BlockNode backup= *b;
2708 b->type|= BLOCK_INTRA;
2709 b->color[plane_index]= 0;
2710 memset(dst, 0, obmc_stride*obmc_stride*sizeof(IDWTELEM));
2713 int mb_x2= mb_x + (i &1) - 1;
2714 int mb_y2= mb_y + (i>>1) - 1;
2715 int x= block_w*mb_x2 + block_w/2;
2716 int y= block_w*mb_y2 + block_w/2;
2718 add_yblock(s, 0, NULL, dst + ((i&1)+(i>>1)*obmc_stride)*block_w, NULL, obmc,
2719 x, y, block_w, block_w, w, h, obmc_stride, ref_stride, obmc_stride, mb_x2, mb_y2, 0, 0, plane_index);
2721 for(y2= FFMAX(y, 0); y2<FFMIN(h, y+block_w); y2++){
2722 for(x2= FFMAX(x, 0); x2<FFMIN(w, x+block_w); x2++){
2723 int index= x2-(block_w*mb_x - block_w/2) + (y2-(block_w*mb_y - block_w/2))*obmc_stride;
2724 int obmc_v= obmc[index];
2726 if(y<0) obmc_v += obmc[index + block_w*obmc_stride];
2727 if(x<0) obmc_v += obmc[index + block_w];
2728 if(y+block_w>h) obmc_v += obmc[index - block_w*obmc_stride];
2729 if(x+block_w>w) obmc_v += obmc[index - block_w];
2730 //FIXME precalculate this or simplify it somehow else
2732 d = -dst[index] + (1<<(FRAC_BITS-1));
2734 ab += (src[x2 + y2*ref_stride] - (d>>FRAC_BITS)) * obmc_v;
2735 aa += obmc_v * obmc_v; //FIXME precalculate this
2741 return av_clip(((ab<<LOG2_OBMC_MAX) + aa/2)/aa, 0, 255); //FIXME we should not need clipping
2744 static inline int get_block_bits(SnowContext *s, int x, int y, int w){
2745 const int b_stride = s->b_width << s->block_max_depth;
2746 const int b_height = s->b_height<< s->block_max_depth;
2747 int index= x + y*b_stride;
2748 const BlockNode *b = &s->block[index];
2749 const BlockNode *left = x ? &s->block[index-1] : &null_block;
2750 const BlockNode *top = y ? &s->block[index-b_stride] : &null_block;
2751 const BlockNode *tl = y && x ? &s->block[index-b_stride-1] : left;
2752 const BlockNode *tr = y && x+w<b_stride ? &s->block[index-b_stride+w] : tl;
2754 // int mx_context= av_log2(2*FFABS(left->mx - top->mx));
2755 // int my_context= av_log2(2*FFABS(left->my - top->my));
2757 if(x<0 || x>=b_stride || y>=b_height)
2764 00001XXXX 15-30 8-15
2766 //FIXME try accurate rate
2767 //FIXME intra and inter predictors if surrounding blocks are not the same type
2768 if(b->type & BLOCK_INTRA){
2769 return 3+2*( av_log2(2*FFABS(left->color[0] - b->color[0]))
2770 + av_log2(2*FFABS(left->color[1] - b->color[1]))
2771 + av_log2(2*FFABS(left->color[2] - b->color[2])));
2773 pred_mv(s, &dmx, &dmy, b->ref, left, top, tr);
2776 return 2*(1 + av_log2(2*FFABS(dmx)) //FIXME kill the 2* can be merged in lambda
2777 + av_log2(2*FFABS(dmy))
2778 + av_log2(2*b->ref));
2782 static int get_block_rd(SnowContext *s, int mb_x, int mb_y, int plane_index, const uint8_t *obmc_edged){
2783 Plane *p= &s->plane[plane_index];
2784 const int block_size = MB_SIZE >> s->block_max_depth;
2785 const int block_w = plane_index ? block_size/2 : block_size;
2786 const int obmc_stride= plane_index ? block_size : 2*block_size;
2787 const int ref_stride= s->current_picture.linesize[plane_index];
2788 uint8_t *dst= s->current_picture.data[plane_index];
2789 uint8_t *src= s-> input_picture.data[plane_index];
2790 IDWTELEM *pred= (IDWTELEM*)s->m.obmc_scratchpad + plane_index*block_size*block_size*4;
2791 uint8_t *cur = s->scratchbuf;
2792 uint8_t tmp[ref_stride*(2*MB_SIZE+HTAPS_MAX-1)];
2793 const int b_stride = s->b_width << s->block_max_depth;
2794 const int b_height = s->b_height<< s->block_max_depth;
2795 const int w= p->width;
2796 const int h= p->height;
2799 const int penalty_factor= get_penalty_factor(s->lambda, s->lambda2, s->avctx->me_cmp);
2800 int sx= block_w*mb_x - block_w/2;
2801 int sy= block_w*mb_y - block_w/2;
2802 int x0= FFMAX(0,-sx);
2803 int y0= FFMAX(0,-sy);
2804 int x1= FFMIN(block_w*2, w-sx);
2805 int y1= FFMIN(block_w*2, h-sy);
2808 pred_block(s, cur, tmp, ref_stride, sx, sy, block_w*2, block_w*2, &s->block[mb_x + mb_y*b_stride], plane_index, w, h);
2810 for(y=y0; y<y1; y++){
2811 const uint8_t *obmc1= obmc_edged + y*obmc_stride;
2812 const IDWTELEM *pred1 = pred + y*obmc_stride;
2813 uint8_t *cur1 = cur + y*ref_stride;
2814 uint8_t *dst1 = dst + sx + (sy+y)*ref_stride;
2815 for(x=x0; x<x1; x++){
2816 #if FRAC_BITS >= LOG2_OBMC_MAX
2817 int v = (cur1[x] * obmc1[x]) << (FRAC_BITS - LOG2_OBMC_MAX);
2819 int v = (cur1[x] * obmc1[x] + (1<<(LOG2_OBMC_MAX - FRAC_BITS-1))) >> (LOG2_OBMC_MAX - FRAC_BITS);
2821 v = (v + pred1[x]) >> FRAC_BITS;
2822 if(v&(~255)) v= ~(v>>31);
2827 /* copy the regions where obmc[] = (uint8_t)256 */
2828 if(LOG2_OBMC_MAX == 8
2829 && (mb_x == 0 || mb_x == b_stride-1)
2830 && (mb_y == 0 || mb_y == b_height-1)){
2839 for(y=y0; y<y1; y++)
2840 memcpy(dst + sx+x0 + (sy+y)*ref_stride, cur + x0 + y*ref_stride, x1-x0);
2844 /* FIXME rearrange dsputil to fit 32x32 cmp functions */
2845 /* FIXME check alignment of the cmp wavelet vs the encoding wavelet */
2846 /* FIXME cmps overlap but do not cover the wavelet's whole support.
2847 * So improving the score of one block is not strictly guaranteed
2848 * to improve the score of the whole frame, thus iterative motion
2849 * estimation does not always converge. */
2850 if(s->avctx->me_cmp == FF_CMP_W97)
2851 distortion = w97_32_c(&s->m, src + sx + sy*ref_stride, dst + sx + sy*ref_stride, ref_stride, 32);
2852 else if(s->avctx->me_cmp == FF_CMP_W53)
2853 distortion = w53_32_c(&s->m, src + sx + sy*ref_stride, dst + sx + sy*ref_stride, ref_stride, 32);
2857 int off = sx+16*(i&1) + (sy+16*(i>>1))*ref_stride;
2858 distortion += s->dsp.me_cmp[0](&s->m, src + off, dst + off, ref_stride, 16);
2863 distortion = s->dsp.me_cmp[0](&s->m, src + sx + sy*ref_stride, dst + sx + sy*ref_stride, ref_stride, block_w*2);
2872 rate += get_block_bits(s, mb_x + (i&1) - (i>>1), mb_y + (i>>1), 1);
2874 if(mb_x == b_stride-2)
2875 rate += get_block_bits(s, mb_x + 1, mb_y + 1, 1);
2877 return distortion + rate*penalty_factor;
2880 static int get_4block_rd(SnowContext *s, int mb_x, int mb_y, int plane_index){
2882 Plane *p= &s->plane[plane_index];
2883 const int block_size = MB_SIZE >> s->block_max_depth;
2884 const int block_w = plane_index ? block_size/2 : block_size;
2885 const uint8_t *obmc = plane_index ? obmc_tab[s->block_max_depth+1] : obmc_tab[s->block_max_depth];
2886 const int obmc_stride= plane_index ? block_size : 2*block_size;
2887 const int ref_stride= s->current_picture.linesize[plane_index];
2888 uint8_t *dst= s->current_picture.data[plane_index];
2889 uint8_t *src= s-> input_picture.data[plane_index];
2890 //FIXME zero_dst is const but add_yblock changes dst if add is 0 (this is never the case for dst=zero_dst
2891 // const has only been removed from zero_dst to suppress a warning
2892 static IDWTELEM zero_dst[4096]; //FIXME
2893 const int b_stride = s->b_width << s->block_max_depth;
2894 const int w= p->width;
2895 const int h= p->height;
2898 const int penalty_factor= get_penalty_factor(s->lambda, s->lambda2, s->avctx->me_cmp);
2901 int mb_x2= mb_x + (i%3) - 1;
2902 int mb_y2= mb_y + (i/3) - 1;
2903 int x= block_w*mb_x2 + block_w/2;
2904 int y= block_w*mb_y2 + block_w/2;
2906 add_yblock(s, 0, NULL, zero_dst, dst, obmc,
2907 x, y, block_w, block_w, w, h, /*dst_stride*/0, ref_stride, obmc_stride, mb_x2, mb_y2, 1, 1, plane_index);
2909 //FIXME find a cleaner/simpler way to skip the outside stuff
2910 for(y2= y; y2<0; y2++)
2911 memcpy(dst + x + y2*ref_stride, src + x + y2*ref_stride, block_w);
2912 for(y2= h; y2<y+block_w; y2++)
2913 memcpy(dst + x + y2*ref_stride, src + x + y2*ref_stride, block_w);
2915 for(y2= y; y2<y+block_w; y2++)
2916 memcpy(dst + x + y2*ref_stride, src + x + y2*ref_stride, -x);
2919 for(y2= y; y2<y+block_w; y2++)
2920 memcpy(dst + w + y2*ref_stride, src + w + y2*ref_stride, x+block_w - w);
2923 assert(block_w== 8 || block_w==16);
2924 distortion += s->dsp.me_cmp[block_w==8](&s->m, src + x + y*ref_stride, dst + x + y*ref_stride, ref_stride, block_w);
2928 BlockNode *b= &s->block[mb_x+mb_y*b_stride];
2929 int merged= same_block(b,b+1) && same_block(b,b+b_stride) && same_block(b,b+b_stride+1);
2937 rate = get_block_bits(s, mb_x, mb_y, 2);
2938 for(i=merged?4:0; i<9; i++){
2939 static const int dxy[9][2] = {{0,0},{1,0},{0,1},{1,1},{2,0},{2,1},{-1,2},{0,2},{1,2}};
2940 rate += get_block_bits(s, mb_x + dxy[i][0], mb_y + dxy[i][1], 1);
2943 return distortion + rate*penalty_factor;
2946 static av_always_inline int check_block(SnowContext *s, int mb_x, int mb_y, int p[3], int intra, const uint8_t *obmc_edged, int *best_rd){
2947 const int b_stride= s->b_width << s->block_max_depth;
2948 BlockNode *block= &s->block[mb_x + mb_y * b_stride];
2949 BlockNode backup= *block;
2950 int rd, index, value;
2952 assert(mb_x>=0 && mb_y>=0);
2953 assert(mb_x<b_stride);
2956 block->color[0] = p[0];
2957 block->color[1] = p[1];
2958 block->color[2] = p[2];
2959 block->type |= BLOCK_INTRA;
2961 index= (p[0] + 31*p[1]) & (ME_CACHE_SIZE-1);
2962 value= s->me_cache_generation + (p[0]>>10) + (p[1]<<6) + (block->ref<<12);
2963 if(s->me_cache[index] == value)
2965 s->me_cache[index]= value;
2969 block->type &= ~BLOCK_INTRA;
2972 rd= get_block_rd(s, mb_x, mb_y, 0, obmc_edged);
2984 /* special case for int[2] args we discard afterwards,
2985 * fixes compilation problem with gcc 2.95 */
2986 static av_always_inline int check_block_inter(SnowContext *s, int mb_x, int mb_y, int p0, int p1, const uint8_t *obmc_edged, int *best_rd){
2987 int p[2] = {p0, p1};
2988 return check_block(s, mb_x, mb_y, p, 0, obmc_edged, best_rd);
2991 static av_always_inline int check_4block_inter(SnowContext *s, int mb_x, int mb_y, int p0, int p1, int ref, int *best_rd){
2992 const int b_stride= s->b_width << s->block_max_depth;
2993 BlockNode *block= &s->block[mb_x + mb_y * b_stride];
2994 BlockNode backup[4]= {block[0], block[1], block[b_stride], block[b_stride+1]};
2995 int rd, index, value;
2997 assert(mb_x>=0 && mb_y>=0);
2998 assert(mb_x<b_stride);
2999 assert(((mb_x|mb_y)&1) == 0);
3001 index= (p0 + 31*p1) & (ME_CACHE_SIZE-1);
3002 value= s->me_cache_generation + (p0>>10) + (p1<<6) + (block->ref<<12);
3003 if(s->me_cache[index] == value)
3005 s->me_cache[index]= value;
3010 block->type &= ~BLOCK_INTRA;
3011 block[1]= block[b_stride]= block[b_stride+1]= *block;
3013 rd= get_4block_rd(s, mb_x, mb_y, 0);
3020 block[0]= backup[0];
3021 block[1]= backup[1];
3022 block[b_stride]= backup[2];
3023 block[b_stride+1]= backup[3];
3028 static void iterative_me(SnowContext *s){
3029 int pass, mb_x, mb_y;
3030 const int b_width = s->b_width << s->block_max_depth;
3031 const int b_height= s->b_height << s->block_max_depth;
3032 const int b_stride= b_width;
3036 RangeCoder r = s->c;
3037 uint8_t state[sizeof(s->block_state)];
3038 memcpy(state, s->block_state, sizeof(s->block_state));
3039 for(mb_y= 0; mb_y<s->b_height; mb_y++)
3040 for(mb_x= 0; mb_x<s->b_width; mb_x++)
3041 encode_q_branch(s, 0, mb_x, mb_y);
3043 memcpy(s->block_state, state, sizeof(s->block_state));
3046 for(pass=0; pass<25; pass++){
3049 for(mb_y= 0; mb_y<b_height; mb_y++){
3050 for(mb_x= 0; mb_x<b_width; mb_x++){
3051 int dia_change, i, j, ref;
3052 int best_rd= INT_MAX, ref_rd;
3053 BlockNode backup, ref_b;
3054 const int index= mb_x + mb_y * b_stride;
3055 BlockNode *block= &s->block[index];
3056 BlockNode *tb = mb_y ? &s->block[index-b_stride ] : NULL;
3057 BlockNode *lb = mb_x ? &s->block[index -1] : NULL;
3058 BlockNode *rb = mb_x+1<b_width ? &s->block[index +1] : NULL;
3059 BlockNode *bb = mb_y+1<b_height ? &s->block[index+b_stride ] : NULL;
3060 BlockNode *tlb= mb_x && mb_y ? &s->block[index-b_stride-1] : NULL;
3061 BlockNode *trb= mb_x+1<b_width && mb_y ? &s->block[index-b_stride+1] : NULL;
3062 BlockNode *blb= mb_x && mb_y+1<b_height ? &s->block[index+b_stride-1] : NULL;
3063 BlockNode *brb= mb_x+1<b_width && mb_y+1<b_height ? &s->block[index+b_stride+1] : NULL;
3064 const int b_w= (MB_SIZE >> s->block_max_depth);
3065 uint8_t obmc_edged[b_w*2][b_w*2];
3067 if(pass && (block->type & BLOCK_OPT))
3069 block->type |= BLOCK_OPT;
3073 if(!s->me_cache_generation)
3074 memset(s->me_cache, 0, sizeof(s->me_cache));
3075 s->me_cache_generation += 1<<22;
3077 //FIXME precalculate
3080 memcpy(obmc_edged, obmc_tab[s->block_max_depth], b_w*b_w*4);
3082 for(y=0; y<b_w*2; y++)
3083 memset(obmc_edged[y], obmc_edged[y][0] + obmc_edged[y][b_w-1], b_w);
3084 if(mb_x==b_stride-1)
3085 for(y=0; y<b_w*2; y++)
3086 memset(obmc_edged[y]+b_w, obmc_edged[y][b_w] + obmc_edged[y][b_w*2-1], b_w);
3088 for(x=0; x<b_w*2; x++)
3089 obmc_edged[0][x] += obmc_edged[b_w-1][x];
3090 for(y=1; y<b_w; y++)
3091 memcpy(obmc_edged[y], obmc_edged[0], b_w*2);
3093 if(mb_y==b_height-1){
3094 for(x=0; x<b_w*2; x++)
3095 obmc_edged[b_w*2-1][x] += obmc_edged[b_w][x];
3096 for(y=b_w; y<b_w*2-1; y++)
3097 memcpy(obmc_edged[y], obmc_edged[b_w*2-1], b_w*2);
3101 //skip stuff outside the picture
3102 if(mb_x==0 || mb_y==0 || mb_x==b_width-1 || mb_y==b_height-1){
3103 uint8_t *src= s-> input_picture.data[0];
3104 uint8_t *dst= s->current_picture.data[0];
3105 const int stride= s->current_picture.linesize[0];
3106 const int block_w= MB_SIZE >> s->block_max_depth;
3107 const int sx= block_w*mb_x - block_w/2;
3108 const int sy= block_w*mb_y - block_w/2;
3109 const int w= s->plane[0].width;
3110 const int h= s->plane[0].height;
3114 memcpy(dst + sx + y*stride, src + sx + y*stride, block_w*2);
3115 for(y=h; y<sy+block_w*2; y++)
3116 memcpy(dst + sx + y*stride, src + sx + y*stride, block_w*2);
3118 for(y=sy; y<sy+block_w*2; y++)
3119 memcpy(dst + sx + y*stride, src + sx + y*stride, -sx);
3121 if(sx+block_w*2 > w){
3122 for(y=sy; y<sy+block_w*2; y++)
3123 memcpy(dst + w + y*stride, src + w + y*stride, sx+block_w*2 - w);
3127 // intra(black) = neighbors' contribution to the current block
3129 color[i]= get_dc(s, mb_x, mb_y, i);
3131 // get previous score (cannot be cached due to OBMC)
3132 if(pass > 0 && (block->type&BLOCK_INTRA)){
3133 int color0[3]= {block->color[0], block->color[1], block->color[2]};
3134 check_block(s, mb_x, mb_y, color0, 1, *obmc_edged, &best_rd);
3136 check_block_inter(s, mb_x, mb_y, block->mx, block->my, *obmc_edged, &best_rd);
3140 for(ref=0; ref < s->ref_frames; ref++){
3141 int16_t (*mvr)[2]= &s->ref_mvs[ref][index];
3142 if(s->ref_scores[ref][index] > s->ref_scores[ref_b.ref][index]*3/2) //FIXME tune threshold
3147 check_block_inter(s, mb_x, mb_y, mvr[0][0], mvr[0][1], *obmc_edged, &best_rd);
3148 check_block_inter(s, mb_x, mb_y, 0, 0, *obmc_edged, &best_rd);
3150 check_block_inter(s, mb_x, mb_y, mvr[-b_stride][0], mvr[-b_stride][1], *obmc_edged, &best_rd);
3152 check_block_inter(s, mb_x, mb_y, mvr[-1][0], mvr[-1][1], *obmc_edged, &best_rd);
3154 check_block_inter(s, mb_x, mb_y, mvr[1][0], mvr[1][1], *obmc_edged, &best_rd);
3156 check_block_inter(s, mb_x, mb_y, mvr[b_stride][0], mvr[b_stride][1], *obmc_edged, &best_rd);
3159 //FIXME avoid subpel interpolation / round to nearest integer
3162 for(i=0; i<FFMAX(s->avctx->dia_size, 1); i++){
3164 dia_change |= check_block_inter(s, mb_x, mb_y, block->mx+4*(i-j), block->my+(4*j), *obmc_edged, &best_rd);
3165 dia_change |= check_block_inter(s, mb_x, mb_y, block->mx-4*(i-j), block->my-(4*j), *obmc_edged, &best_rd);
3166 dia_change |= check_block_inter(s, mb_x, mb_y, block->mx+4*(i-j), block->my-(4*j), *obmc_edged, &best_rd);
3167 dia_change |= check_block_inter(s, mb_x, mb_y, block->mx-4*(i-j), block->my+(4*j), *obmc_edged, &best_rd);
3173 static const int square[8][2]= {{+1, 0},{-1, 0},{ 0,+1},{ 0,-1},{+1,+1},{-1,-1},{+1,-1},{-1,+1},};
3176 dia_change |= check_block_inter(s, mb_x, mb_y, block->mx+square[i][0], block->my+square[i][1], *obmc_edged, &best_rd);
3178 //FIXME or try the standard 2 pass qpel or similar
3180 mvr[0][0]= block->mx;
3181 mvr[0][1]= block->my;
3182 if(ref_rd > best_rd){
3190 check_block(s, mb_x, mb_y, color, 1, *obmc_edged, &best_rd);
3191 //FIXME RD style color selection
3193 if(!same_block(block, &backup)){
3194 if(tb ) tb ->type &= ~BLOCK_OPT;
3195 if(lb ) lb ->type &= ~BLOCK_OPT;
3196 if(rb ) rb ->type &= ~BLOCK_OPT;
3197 if(bb ) bb ->type &= ~BLOCK_OPT;
3198 if(tlb) tlb->type &= ~BLOCK_OPT;
3199 if(trb) trb->type &= ~BLOCK_OPT;
3200 if(blb) blb->type &= ~BLOCK_OPT;
3201 if(brb) brb->type &= ~BLOCK_OPT;
3206 av_log(NULL, AV_LOG_ERROR, "pass:%d changed:%d\n", pass, change);
3211 if(s->block_max_depth == 1){
3213 for(mb_y= 0; mb_y<b_height; mb_y+=2){
3214 for(mb_x= 0; mb_x<b_width; mb_x+=2){
3216 int best_rd, init_rd;
3217 const int index= mb_x + mb_y * b_stride;
3220 b[0]= &s->block[index];
3222 b[2]= b[0]+b_stride;
3224 if(same_block(b[0], b[1]) &&
3225 same_block(b[0], b[2]) &&
3226 same_block(b[0], b[3]))
3229 if(!s->me_cache_generation)
3230 memset(s->me_cache, 0, sizeof(s->me_cache));
3231 s->me_cache_generation += 1<<22;
3233 init_rd= best_rd= get_4block_rd(s, mb_x, mb_y, 0);
3235 //FIXME more multiref search?
3236 check_4block_inter(s, mb_x, mb_y,
3237 (b[0]->mx + b[1]->mx + b[2]->mx + b[3]->mx + 2) >> 2,
3238 (b[0]->my + b[1]->my + b[2]->my + b[3]->my + 2) >> 2, 0, &best_rd);
3241 if(!(b[i]->type&BLOCK_INTRA))
3242 check_4block_inter(s, mb_x, mb_y, b[i]->mx, b[i]->my, b[i]->ref, &best_rd);
3244 if(init_rd != best_rd)
3248 av_log(NULL, AV_LOG_ERROR, "pass:4mv changed:%d\n", change*4);
3252 static void quantize(SnowContext *s, SubBand *b, IDWTELEM *dst, DWTELEM *src, int stride, int bias){
3253 const int w= b->width;
3254 const int h= b->height;
3255 const int qlog= av_clip(s->qlog + b->qlog, 0, QROOT*16);
3256 const int qmul= qexp[qlog&(QROOT-1)]<<((qlog>>QSHIFT) + ENCODER_EXTRA_BITS);
3257 int x,y, thres1, thres2;
3259 if(s->qlog == LOSSLESS_QLOG){
3262 dst[x + y*stride]= src[x + y*stride];
3266 bias= bias ? 0 : (3*qmul)>>3;
3267 thres1= ((qmul - bias)>>QEXPSHIFT) - 1;
3273 int i= src[x + y*stride];
3275 if((unsigned)(i+thres1) > thres2){
3278 i/= qmul; //FIXME optimize
3279 dst[x + y*stride]= i;
3283 i/= qmul; //FIXME optimize
3284 dst[x + y*stride]= -i;
3287 dst[x + y*stride]= 0;
3293 int i= src[x + y*stride];
3295 if((unsigned)(i+thres1) > thres2){
3298 i= (i + bias) / qmul; //FIXME optimize
3299 dst[x + y*stride]= i;
3303 i= (i + bias) / qmul; //FIXME optimize
3304 dst[x + y*stride]= -i;
3307 dst[x + y*stride]= 0;
3313 static void dequantize_slice_buffered(SnowContext *s, slice_buffer * sb, SubBand *b, IDWTELEM *src, int stride, int start_y, int end_y){
3314 const int w= b->width;
3315 const int qlog= av_clip(s->qlog + b->qlog, 0, QROOT*16);
3316 const int qmul= qexp[qlog&(QROOT-1)]<<(qlog>>QSHIFT);
3317 const int qadd= (s->qbias*qmul)>>QBIAS_SHIFT;
3320 if(s->qlog == LOSSLESS_QLOG) return;
3322 for(y=start_y; y<end_y; y++){
3323 // DWTELEM * line = slice_buffer_get_line_from_address(sb, src + (y * stride));
3324 IDWTELEM * line = slice_buffer_get_line(sb, (y * b->stride_line) + b->buf_y_offset) + b->buf_x_offset;
3328 line[x]= -((-i*qmul + qadd)>>(QEXPSHIFT)); //FIXME try different bias
3330 line[x]= (( i*qmul + qadd)>>(QEXPSHIFT));
3336 static void dequantize(SnowContext *s, SubBand *b, IDWTELEM *src, int stride){
3337 const int w= b->width;
3338 const int h= b->height;
3339 const int qlog= av_clip(s->qlog + b->qlog, 0, QROOT*16);
3340 const int qmul= qexp[qlog&(QROOT-1)]<<(qlog>>QSHIFT);
3341 const int qadd= (s->qbias*qmul)>>QBIAS_SHIFT;
3344 if(s->qlog == LOSSLESS_QLOG) return;
3348 int i= src[x + y*stride];
3350 src[x + y*stride]= -((-i*qmul + qadd)>>(QEXPSHIFT)); //FIXME try different bias
3352 src[x + y*stride]= (( i*qmul + qadd)>>(QEXPSHIFT));
3358 static void decorrelate(SnowContext *s, SubBand *b, IDWTELEM *src, int stride, int inverse, int use_median){
3359 const int w= b->width;
3360 const int h= b->height;
3363 for(y=h-1; y>=0; y--){
3364 for(x=w-1; x>=0; x--){
3365 int i= x + y*stride;
3369 if(y && x+1<w) src[i] -= mid_pred(src[i - 1], src[i - stride], src[i - stride + 1]);
3370 else src[i] -= src[i - 1];
3372 if(y) src[i] -= mid_pred(src[i - 1], src[i - stride], src[i - 1] + src[i - stride] - src[i - 1 - stride]);
3373 else src[i] -= src[i - 1];
3376 if(y) src[i] -= src[i - stride];
3382 static void correlate_slice_buffered(SnowContext *s, slice_buffer * sb, SubBand *b, IDWTELEM *src, int stride, int inverse, int use_median, int start_y, int end_y){
3383 const int w= b->width;
3386 IDWTELEM * line=0; // silence silly "could be used without having been initialized" warning
3390 line = slice_buffer_get_line(sb, ((start_y - 1) * b->stride_line) + b->buf_y_offset) + b->buf_x_offset;
3392 for(y=start_y; y<end_y; y++){
3394 // line = slice_buffer_get_line_from_address(sb, src + (y * stride));
3395 line = slice_buffer_get_line(sb, (y * b->stride_line) + b->buf_y_offset) + b->buf_x_offset;
3399 if(y && x+1<w) line[x] += mid_pred(line[x - 1], prev[x], prev[x + 1]);
3400 else line[x] += line[x - 1];
3402 if(y) line[x] += mid_pred(line[x - 1], prev[x], line[x - 1] + prev[x] - prev[x - 1]);
3403 else line[x] += line[x - 1];
3406 if(y) line[x] += prev[x];
3412 static void correlate(SnowContext *s, SubBand *b, IDWTELEM *src, int stride, int inverse, int use_median){
3413 const int w= b->width;
3414 const int h= b->height;
3419 int i= x + y*stride;
3423 if(y && x+1<w) src[i] += mid_pred(src[i - 1], src[i - stride], src[i - stride + 1]);
3424 else src[i] += src[i - 1];
3426 if(y) src[i] += mid_pred(src[i - 1], src[i - stride], src[i - 1] + src[i - stride] - src[i - 1 - stride]);
3427 else src[i] += src[i - 1];
3430 if(y) src[i] += src[i - stride];
3436 static void encode_qlogs(SnowContext *s){
3437 int plane_index, level, orientation;
3439 for(plane_index=0; plane_index<2; plane_index++){
3440 for(level=0; level<s->spatial_decomposition_count; level++){
3441 for(orientation=level ? 1:0; orientation<4; orientation++){
3442 if(orientation==2) continue;
3443 put_symbol(&s->c, s->header_state, s->plane[plane_index].band[level][orientation].qlog, 1);
3449 static void encode_header(SnowContext *s){
3453 memset(kstate, MID_STATE, sizeof(kstate));
3455 put_rac(&s->c, kstate, s->keyframe);
3456 if(s->keyframe || s->always_reset){
3458 s->last_spatial_decomposition_type=
3462 s->last_block_max_depth= 0;
3463 for(plane_index=0; plane_index<2; plane_index++){
3464 Plane *p= &s->plane[plane_index];
3467 memset(p->last_hcoeff, 0, sizeof(p->last_hcoeff));
3471 put_symbol(&s->c, s->header_state, s->version, 0);
3472 put_rac(&s->c, s->header_state, s->always_reset);
3473 put_symbol(&s->c, s->header_state, s->temporal_decomposition_type, 0);
3474 put_symbol(&s->c, s->header_state, s->temporal_decomposition_count, 0);
3475 put_symbol(&s->c, s->header_state, s->spatial_decomposition_count, 0);
3476 put_symbol(&s->c, s->header_state, s->colorspace_type, 0);
3477 put_symbol(&s->c, s->header_state, s->chroma_h_shift, 0);
3478 put_symbol(&s->c, s->header_state, s->chroma_v_shift, 0);
3479 put_rac(&s->c, s->header_state, s->spatial_scalability);
3480 // put_rac(&s->c, s->header_state, s->rate_scalability);
3481 put_symbol(&s->c, s->header_state, s->max_ref_frames-1, 0);
3488 for(plane_index=0; plane_index<2; plane_index++){
3489 Plane *p= &s->plane[plane_index];
3490 update_mc |= p->last_htaps != p->htaps;
3491 update_mc |= p->last_diag_mc != p->diag_mc;
3492 update_mc |= !!memcmp(p->last_hcoeff, p->hcoeff, sizeof(p->hcoeff));
3494 put_rac(&s->c, s->header_state, update_mc);
3496 for(plane_index=0; plane_index<2; plane_index++){
3497 Plane *p= &s->plane[plane_index];
3498 put_rac(&s->c, s->header_state, p->diag_mc);
3499 put_symbol(&s->c, s->header_state, p->htaps/2-1, 0);
3500 for(i= p->htaps/2; i; i--)
3501 put_symbol(&s->c, s->header_state, FFABS(p->hcoeff[i]), 0);
3504 if(s->last_spatial_decomposition_count != s->spatial_decomposition_count){
3505 put_rac(&s->c, s->header_state, 1);
3506 put_symbol(&s->c, s->header_state, s->spatial_decomposition_count, 0);
3509 put_rac(&s->c, s->header_state, 0);
3512 put_symbol(&s->c, s->header_state, s->spatial_decomposition_type - s->last_spatial_decomposition_type, 1);
3513 put_symbol(&s->c, s->header_state, s->qlog - s->last_qlog , 1);
3514 put_symbol(&s->c, s->header_state, s->mv_scale - s->last_mv_scale, 1);
3515 put_symbol(&s->c, s->header_state, s->qbias - s->last_qbias , 1);
3516 put_symbol(&s->c, s->header_state, s->block_max_depth - s->last_block_max_depth, 1);
3520 static void update_last_header_values(SnowContext *s){
3524 for(plane_index=0; plane_index<2; plane_index++){
3525 Plane *p= &s->plane[plane_index];
3526 p->last_diag_mc= p->diag_mc;
3527 p->last_htaps = p->htaps;
3528 memcpy(p->last_hcoeff, p->hcoeff, sizeof(p->hcoeff));
3532 s->last_spatial_decomposition_type = s->spatial_decomposition_type;
3533 s->last_qlog = s->qlog;
3534 s->last_qbias = s->qbias;
3535 s->last_mv_scale = s->mv_scale;
3536 s->last_block_max_depth = s->block_max_depth;
3537 s->last_spatial_decomposition_count = s->spatial_decomposition_count;
3540 static void decode_qlogs(SnowContext *s){
3541 int plane_index, level, orientation;
3543 for(plane_index=0; plane_index<3; plane_index++){
3544 for(level=0; level<s->spatial_decomposition_count; level++){
3545 for(orientation=level ? 1:0; orientation<4; orientation++){
3547 if (plane_index==2) q= s->plane[1].band[level][orientation].qlog;
3548 else if(orientation==2) q= s->plane[plane_index].band[level][1].qlog;
3549 else q= get_symbol(&s->c, s->header_state, 1);
3550 s->plane[plane_index].band[level][orientation].qlog= q;
3556 #define GET_S(dst, check) \
3557 tmp= get_symbol(&s->c, s->header_state, 0);\
3559 av_log(s->avctx, AV_LOG_ERROR, "Error " #dst " is %d\n", tmp);\
3564 static int decode_header(SnowContext *s){
3565 int plane_index, tmp;
3568 memset(kstate, MID_STATE, sizeof(kstate));
3570 s->keyframe= get_rac(&s->c, kstate);
3571 if(s->keyframe || s->always_reset){
3573 s->spatial_decomposition_type=
3577 s->block_max_depth= 0;
3580 GET_S(s->version, tmp <= 0U)
3581 s->always_reset= get_rac(&s->c, s->header_state);
3582 s->temporal_decomposition_type= get_symbol(&s->c, s->header_state, 0);
3583 s->temporal_decomposition_count= get_symbol(&s->c, s->header_state, 0);
3584 s->spatial_decomposition_count= get_symbol(&s->c, s->header_state, 0);
3585 s->colorspace_type= get_symbol(&s->c, s->header_state, 0);
3586 s->chroma_h_shift= get_symbol(&s->c, s->header_state, 0);
3587 s->chroma_v_shift= get_symbol(&s->c, s->header_state, 0);
3588 s->spatial_scalability= get_rac(&s->c, s->header_state);
3589 // s->rate_scalability= get_rac(&s->c, s->header_state);
3590 GET_S(s->max_ref_frames, tmp < (unsigned)MAX_REF_FRAMES)
3591 s->max_ref_frames++;
3597 if(get_rac(&s->c, s->header_state)){
3598 for(plane_index=0; plane_index<2; plane_index++){
3599 int htaps, i, sum=0;
3600 Plane *p= &s->plane[plane_index];
3601 p->diag_mc= get_rac(&s->c, s->header_state);
3602 htaps= get_symbol(&s->c, s->header_state, 0)*2 + 2;
3603 if((unsigned)htaps > HTAPS_MAX || htaps==0)
3606 for(i= htaps/2; i; i--){
3607 p->hcoeff[i]= get_symbol(&s->c, s->header_state, 0) * (1-2*(i&1));
3608 sum += p->hcoeff[i];
3610 p->hcoeff[0]= 32-sum;
3612 s->plane[2].diag_mc= s->plane[1].diag_mc;
3613 s->plane[2].htaps = s->plane[1].htaps;
3614 memcpy(s->plane[2].hcoeff, s->plane[1].hcoeff, sizeof(s->plane[1].hcoeff));
3616 if(get_rac(&s->c, s->header_state)){
3617 s->spatial_decomposition_count= get_symbol(&s->c, s->header_state, 0);
3622 s->spatial_decomposition_type+= get_symbol(&s->c, s->header_state, 1);
3623 if(s->spatial_decomposition_type > 1U){
3624 av_log(s->avctx, AV_LOG_ERROR, "spatial_decomposition_type %d not supported", s->spatial_decomposition_type);
3628 s->qlog += get_symbol(&s->c, s->header_state, 1);
3629 s->mv_scale += get_symbol(&s->c, s->header_state, 1);
3630 s->qbias += get_symbol(&s->c, s->header_state, 1);
3631 s->block_max_depth+= get_symbol(&s->c, s->header_state, 1);
3632 if(s->block_max_depth > 1 || s->block_max_depth < 0){
3633 av_log(s->avctx, AV_LOG_ERROR, "block_max_depth= %d is too large", s->block_max_depth);
3634 s->block_max_depth= 0;
3641 static void init_qexp(void){
3645 for(i=0; i<QROOT; i++){
3647 v *= pow(2, 1.0 / QROOT);
3651 static av_cold int common_init(AVCodecContext *avctx){
3652 SnowContext *s = avctx->priv_data;
3657 s->max_ref_frames=1; //just make sure its not an invalid value in case of no initial keyframe
3659 dsputil_init(&s->dsp, avctx);
3662 s->dsp.put_qpel_pixels_tab [0][dy+dx/4]=\
3663 s->dsp.put_no_rnd_qpel_pixels_tab[0][dy+dx/4]=\
3664 s->dsp.put_h264_qpel_pixels_tab[0][dy+dx/4];\
3665 s->dsp.put_qpel_pixels_tab [1][dy+dx/4]=\
3666 s->dsp.put_no_rnd_qpel_pixels_tab[1][dy+dx/4]=\
3667 s->dsp.put_h264_qpel_pixels_tab[1][dy+dx/4];
3686 #define mcfh(dx,dy)\
3687 s->dsp.put_pixels_tab [0][dy/4+dx/8]=\
3688 s->dsp.put_no_rnd_pixels_tab[0][dy/4+dx/8]=\
3689 mc_block_hpel ## dx ## dy ## 16;\
3690 s->dsp.put_pixels_tab [1][dy/4+dx/8]=\
3691 s->dsp.put_no_rnd_pixels_tab[1][dy/4+dx/8]=\
3692 mc_block_hpel ## dx ## dy ## 8;
3702 // dec += FFMAX(s->chroma_h_shift, s->chroma_v_shift);
3704 width= s->avctx->width;
3705 height= s->avctx->height;
3707 s->spatial_idwt_buffer= av_mallocz(width*height*sizeof(IDWTELEM));
3708 s->spatial_dwt_buffer= av_mallocz(width*height*sizeof(DWTELEM)); //FIXME this does not belong here
3710 for(i=0; i<MAX_REF_FRAMES; i++)
3711 for(j=0; j<MAX_REF_FRAMES; j++)
3712 scale_mv_ref[i][j] = 256*(i+1)/(j+1);
3714 s->avctx->get_buffer(s->avctx, &s->mconly_picture);
3715 s->scratchbuf = av_malloc(s->mconly_picture.linesize[0]*7*MB_SIZE);
3720 static int common_init_after_header(AVCodecContext *avctx){
3721 SnowContext *s = avctx->priv_data;
3722 int plane_index, level, orientation;
3724 for(plane_index=0; plane_index<3; plane_index++){
3725 int w= s->avctx->width;
3726 int h= s->avctx->height;
3729 w>>= s->chroma_h_shift;
3730 h>>= s->chroma_v_shift;
3732 s->plane[plane_index].width = w;
3733 s->plane[plane_index].height= h;
3735 for(level=s->spatial_decomposition_count-1; level>=0; level--){
3736 for(orientation=level ? 1 : 0; orientation<4; orientation++){
3737 SubBand *b= &s->plane[plane_index].band[level][orientation];
3739 b->buf= s->spatial_dwt_buffer;
3741 b->stride= s->plane[plane_index].width << (s->spatial_decomposition_count - level);
3742 b->width = (w + !(orientation&1))>>1;
3743 b->height= (h + !(orientation>1))>>1;
3745 b->stride_line = 1 << (s->spatial_decomposition_count - level);
3746 b->buf_x_offset = 0;
3747 b->buf_y_offset = 0;
3751 b->buf_x_offset = (w+1)>>1;
3754 b->buf += b->stride>>1;
3755 b->buf_y_offset = b->stride_line >> 1;
3757 b->ibuf= s->spatial_idwt_buffer + (b->buf - s->spatial_dwt_buffer);
3760 b->parent= &s->plane[plane_index].band[level-1][orientation];
3761 //FIXME avoid this realloc
3762 av_freep(&b->x_coeff);
3763 b->x_coeff=av_mallocz(((b->width+1) * b->height+1)*sizeof(x_and_coeff));
3773 static int qscale2qlog(int qscale){
3774 return rint(QROOT*log(qscale / (float)FF_QP2LAMBDA)/log(2))
3775 + 61*QROOT/8; //<64 >60
3778 static int ratecontrol_1pass(SnowContext *s, AVFrame *pict)
3780 /* Estimate the frame's complexity as a sum of weighted dwt coefficients.
3781 * FIXME we know exact mv bits at this point,
3782 * but ratecontrol isn't set up to include them. */
3783 uint32_t coef_sum= 0;
3784 int level, orientation, delta_qlog;
3786 for(level=0; level<s->spatial_decomposition_count; level++){
3787 for(orientation=level ? 1 : 0; orientation<4; orientation++){
3788 SubBand *b= &s->plane[0].band[level][orientation];
3789 IDWTELEM *buf= b->ibuf;
3790 const int w= b->width;
3791 const int h= b->height;
3792 const int stride= b->stride;
3793 const int qlog= av_clip(2*QROOT + b->qlog, 0, QROOT*16);
3794 const int qmul= qexp[qlog&(QROOT-1)]<<(qlog>>QSHIFT);
3795 const int qdiv= (1<<16)/qmul;
3797 //FIXME this is ugly
3800 buf[x+y*stride]= b->buf[x+y*stride];
3802 decorrelate(s, b, buf, stride, 1, 0);
3805 coef_sum+= abs(buf[x+y*stride]) * qdiv >> 16;
3809 /* ugly, ratecontrol just takes a sqrt again */
3810 coef_sum = (uint64_t)coef_sum * coef_sum >> 16;
3811 assert(coef_sum < INT_MAX);
3813 if(pict->pict_type == FF_I_TYPE){
3814 s->m.current_picture.mb_var_sum= coef_sum;
3815 s->m.current_picture.mc_mb_var_sum= 0;
3817 s->m.current_picture.mc_mb_var_sum= coef_sum;
3818 s->m.current_picture.mb_var_sum= 0;
3821 pict->quality= ff_rate_estimate_qscale(&s->m, 1);
3822 if (pict->quality < 0)
3824 s->lambda= pict->quality * 3/2;
3825 delta_qlog= qscale2qlog(pict->quality) - s->qlog;
3826 s->qlog+= delta_qlog;
3830 static void calculate_visual_weight(SnowContext *s, Plane *p){
3831 int width = p->width;
3832 int height= p->height;
3833 int level, orientation, x, y;
3835 for(level=0; level<s->spatial_decomposition_count; level++){
3836 for(orientation=level ? 1 : 0; orientation<4; orientation++){
3837 SubBand *b= &p->band[level][orientation];
3838 IDWTELEM *ibuf= b->ibuf;
3841 memset(s->spatial_idwt_buffer, 0, sizeof(*s->spatial_idwt_buffer)*width*height);
3842 ibuf[b->width/2 + b->height/2*b->stride]= 256*16;
3843 ff_spatial_idwt(s->spatial_idwt_buffer, width, height, width, s->spatial_decomposition_type, s->spatial_decomposition_count);
3844 for(y=0; y<height; y++){
3845 for(x=0; x<width; x++){
3846 int64_t d= s->spatial_idwt_buffer[x + y*width]*16;
3851 b->qlog= (int)(log(352256.0/sqrt(error)) / log(pow(2.0, 1.0/QROOT))+0.5);
3861 static void find_sse(SnowContext *s, Plane *p, int *score, int score_stride, IDWTELEM *r0, IDWTELEM *r1, int level, int orientation){
3862 SubBand *b= &p->band[level][orientation];
3866 int step= 1 << (s->spatial_decomposition_count - level);
3873 //FIXME bias for nonzero ?
3875 memset(score, 0, sizeof(*score)*score_stride*((p->height + Q2_STEP-1)/Q2_STEP));
3876 for(y=0; y<p->height; y++){
3877 for(x=0; x<p->width; x++){
3878 int sx= (x-xo + step/2) / step / Q2_STEP;
3879 int sy= (y-yo + step/2) / step / Q2_STEP;
3880 int v= r0[x + y*p->width] - r1[x + y*p->width];
3881 assert(sx>=0 && sy>=0 && sx < score_stride);
3883 score[sx + sy*score_stride] += v*v;
3884 assert(score[sx + sy*score_stride] >= 0);
3889 static void dequantize_all(SnowContext *s, Plane *p, IDWTELEM *buffer, int width, int height){
3890 int level, orientation;
3892 for(level=0; level<s->spatial_decomposition_count; level++){
3893 for(orientation=level ? 1 : 0; orientation<4; orientation++){
3894 SubBand *b= &p->band[level][orientation];
3895 IDWTELEM *dst= buffer + (b->ibuf - s->spatial_idwt_buffer);
3897 dequantize(s, b, dst, b->stride);
3902 static void dwt_quantize(SnowContext *s, Plane *p, DWTELEM *buffer, int width, int height, int stride, int type){
3903 int level, orientation, ys, xs, x, y, pass;
3904 IDWTELEM best_dequant[height * stride];
3905 IDWTELEM idwt2_buffer[height * stride];
3906 const int score_stride= (width + 10)/Q2_STEP;
3907 int best_score[(width + 10)/Q2_STEP * (height + 10)/Q2_STEP]; //FIXME size
3908 int score[(width + 10)/Q2_STEP * (height + 10)/Q2_STEP]; //FIXME size
3909 int threshold= (s->m.lambda * s->m.lambda) >> 6;
3911 //FIXME pass the copy cleanly ?
3913 // memcpy(dwt_buffer, buffer, height * stride * sizeof(DWTELEM));
3914 ff_spatial_dwt(buffer, width, height, stride, type, s->spatial_decomposition_count);
3916 for(level=0; level<s->spatial_decomposition_count; level++){
3917 for(orientation=level ? 1 : 0; orientation<4; orientation++){
3918 SubBand *b= &p->band[level][orientation];
3919 IDWTELEM *dst= best_dequant + (b->ibuf - s->spatial_idwt_buffer);
3920 DWTELEM *src= buffer + (b-> buf - s->spatial_dwt_buffer);
3921 assert(src == b->buf); // code does not depend on this but it is true currently
3923 quantize(s, b, dst, src, b->stride, s->qbias);
3926 for(pass=0; pass<1; pass++){
3927 if(s->qbias == 0) //keyframe
3929 for(level=0; level<s->spatial_decomposition_count; level++){
3930 for(orientation=level ? 1 : 0; orientation<4; orientation++){
3931 SubBand *b= &p->band[level][orientation];
3932 IDWTELEM *dst= idwt2_buffer + (b->ibuf - s->spatial_idwt_buffer);
3933 IDWTELEM *best_dst= best_dequant + (b->ibuf - s->spatial_idwt_buffer);
3935 for(ys= 0; ys<Q2_STEP; ys++){
3936 for(xs= 0; xs<Q2_STEP; xs++){
3937 memcpy(idwt2_buffer, best_dequant, height * stride * sizeof(IDWTELEM));
3938 dequantize_all(s, p, idwt2_buffer, width, height);
3939 ff_spatial_idwt(idwt2_buffer, width, height, stride, type, s->spatial_decomposition_count);
3940 find_sse(s, p, best_score, score_stride, idwt2_buffer, s->spatial_idwt_buffer, level, orientation);
3941 memcpy(idwt2_buffer, best_dequant, height * stride * sizeof(IDWTELEM));
3942 for(y=ys; y<b->height; y+= Q2_STEP){
3943 for(x=xs; x<b->width; x+= Q2_STEP){
3944 if(dst[x + y*b->stride]<0) dst[x + y*b->stride]++;
3945 if(dst[x + y*b->stride]>0) dst[x + y*b->stride]--;
3946 //FIXME try more than just --
3949 dequantize_all(s, p, idwt2_buffer, width, height);
3950 ff_spatial_idwt(idwt2_buffer, width, height, stride, type, s->spatial_decomposition_count);
3951 find_sse(s, p, score, score_stride, idwt2_buffer, s->spatial_idwt_buffer, level, orientation);
3952 for(y=ys; y<b->height; y+= Q2_STEP){
3953 for(x=xs; x<b->width; x+= Q2_STEP){
3954 int score_idx= x/Q2_STEP + (y/Q2_STEP)*score_stride;
3955 if(score[score_idx] <= best_score[score_idx] + threshold){
3956 best_score[score_idx]= score[score_idx];
3957 if(best_dst[x + y*b->stride]<0) best_dst[x + y*b->stride]++;
3958 if(best_dst[x + y*b->stride]>0) best_dst[x + y*b->stride]--;
3959 //FIXME copy instead
3968 memcpy(s->spatial_idwt_buffer, best_dequant, height * stride * sizeof(IDWTELEM)); //FIXME work with that directly instead of copy at the end
3971 #endif /* QUANTIZE2==1 */
3973 static av_cold int encode_init(AVCodecContext *avctx)
3975 SnowContext *s = avctx->priv_data;
3978 if(avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL){
3979 av_log(avctx, AV_LOG_ERROR, "This codec is under development, files encoded with it may not be decodable with future versions!!!\n"
3980 "Use vstrict=-2 / -strict -2 to use it anyway.\n");
3984 if(avctx->prediction_method == DWT_97
3985 && (avctx->flags & CODEC_FLAG_QSCALE)
3986 && avctx->global_quality == 0){
3987 av_log(avctx, AV_LOG_ERROR, "The 9/7 wavelet is incompatible with lossless mode.\n");
3991 s->spatial_decomposition_type= avctx->prediction_method; //FIXME add decorrelator type r transform_type
3993 s->chroma_h_shift= 1; //FIXME XXX
3994 s->chroma_v_shift= 1;
3996 s->mv_scale = (avctx->flags & CODEC_FLAG_QPEL) ? 2 : 4;
3997 s->block_max_depth= (avctx->flags & CODEC_FLAG_4MV ) ? 1 : 0;
3999 for(plane_index=0; plane_index<3; plane_index++){
4000 s->plane[plane_index].diag_mc= 1;
4001 s->plane[plane_index].htaps= 6;
4002 s->plane[plane_index].hcoeff[0]= 40;
4003 s->plane[plane_index].hcoeff[1]= -10;
4004 s->plane[plane_index].hcoeff[2]= 2;
4005 s->plane[plane_index].fast_mc= 1;
4014 s->m.flags = avctx->flags;
4015 s->m.bit_rate= avctx->bit_rate;
4018 s->m.me.scratchpad= av_mallocz((avctx->width+64)*2*16*2*sizeof(uint8_t));
4019 s->m.me.map = av_mallocz(ME_MAP_SIZE*sizeof(uint32_t));
4020 s->m.me.score_map = av_mallocz(ME_MAP_SIZE*sizeof(uint32_t));
4021 s->m.obmc_scratchpad= av_mallocz(MB_SIZE*MB_SIZE*12*sizeof(uint32_t));
4022 h263_encode_init(&s->m); //mv_penalty
4024 s->max_ref_frames = FFMAX(FFMIN(avctx->refs, MAX_REF_FRAMES), 1);
4026 if(avctx->flags&CODEC_FLAG_PASS1){
4027 if(!avctx->stats_out)
4028 avctx->stats_out = av_mallocz(256);
4030 if((avctx->flags&CODEC_FLAG_PASS2) || !(avctx->flags&CODEC_FLAG_QSCALE)){
4031 if(ff_rate_control_init(&s->m) < 0)
4034 s->pass1_rc= !(avctx->flags & (CODEC_FLAG_QSCALE|CODEC_FLAG_PASS2));
4036 avctx->coded_frame= &s->current_picture;
4037 switch(avctx->pix_fmt){
4038 // case PIX_FMT_YUV444P:
4039 // case PIX_FMT_YUV422P:
4040 case PIX_FMT_YUV420P:
4042 // case PIX_FMT_YUV411P:
4043 // case PIX_FMT_YUV410P:
4044 s->colorspace_type= 0;
4046 /* case PIX_FMT_RGB32:
4050 av_log(avctx, AV_LOG_ERROR, "pixel format not supported\n");
4053 // avcodec_get_chroma_sub_sample(avctx->pix_fmt, &s->chroma_h_shift, &s->chroma_v_shift);
4054 s->chroma_h_shift= 1;
4055 s->chroma_v_shift= 1;
4057 ff_set_cmp(&s->dsp, s->dsp.me_cmp, s->avctx->me_cmp);
4058 ff_set_cmp(&s->dsp, s->dsp.me_sub_cmp, s->avctx->me_sub_cmp);
4060 s->avctx->get_buffer(s->avctx, &s->input_picture);
4062 if(s->avctx->me_method == ME_ITER){
4064 int size= s->b_width * s->b_height << 2*s->block_max_depth;
4065 for(i=0; i<s->max_ref_frames; i++){
4066 s->ref_mvs[i]= av_mallocz(size*sizeof(int16_t[2]));
4067 s->ref_scores[i]= av_mallocz(size*sizeof(uint32_t));
4074 #define USE_HALFPEL_PLANE 0
4076 static void halfpel_interpol(SnowContext *s, uint8_t *halfpel[4][4], AVFrame *frame){
4079 assert(!(s->avctx->flags & CODEC_FLAG_EMU_EDGE));
4083 int w= s->avctx->width >>is_chroma;
4084 int h= s->avctx->height >>is_chroma;
4085 int ls= frame->linesize[p];
4086 uint8_t *src= frame->data[p];
4088 halfpel[1][p]= (uint8_t*)av_malloc(ls * (h+2*EDGE_WIDTH)) + EDGE_WIDTH*(1+ls);
4089 halfpel[2][p]= (uint8_t*)av_malloc(ls * (h+2*EDGE_WIDTH)) + EDGE_WIDTH*(1+ls);
4090 halfpel[3][p]= (uint8_t*)av_malloc(ls * (h+2*EDGE_WIDTH)) + EDGE_WIDTH*(1+ls);
4097 halfpel[1][p][i]= (20*(src[i] + src[i+1]) - 5*(src[i-1] + src[i+2]) + (src[i-2] + src[i+3]) + 16 )>>5;
4104 halfpel[2][p][i]= (20*(src[i] + src[i+ls]) - 5*(src[i-ls] + src[i+2*ls]) + (src[i-2*ls] + src[i+3*ls]) + 16 )>>5;
4112 halfpel[3][p][i]= (20*(src[i] + src[i+ls]) - 5*(src[i-ls] + src[i+2*ls]) + (src[i-2*ls] + src[i+3*ls]) + 16 )>>5;
4120 static int frame_start(SnowContext *s){
4122 int w= s->avctx->width; //FIXME round up to x16 ?
4123 int h= s->avctx->height;
4125 if(s->current_picture.data[0]){
4126 s->dsp.draw_edges(s->current_picture.data[0], s->current_picture.linesize[0], w , h , EDGE_WIDTH );
4127 s->dsp.draw_edges(s->current_picture.data[1], s->current_picture.linesize[1], w>>1, h>>1, EDGE_WIDTH/2);
4128 s->dsp.draw_edges(s->current_picture.data[2], s->current_picture.linesize[2], w>>1, h>>1, EDGE_WIDTH/2);
4131 tmp= s->last_picture[s->max_ref_frames-1];
4132 memmove(s->last_picture+1, s->last_picture, (s->max_ref_frames-1)*sizeof(AVFrame));
4133 memmove(s->halfpel_plane+1, s->halfpel_plane, (s->max_ref_frames-1)*sizeof(void*)*4*4);
4134 if(USE_HALFPEL_PLANE && s->current_picture.data[0])
4135 halfpel_interpol(s, s->halfpel_plane[0], &s->current_picture);
4136 s->last_picture[0]= s->current_picture;
4137 s->current_picture= tmp;
4143 for(i=0; i<s->max_ref_frames && s->last_picture[i].data[0]; i++)
4144 if(i && s->last_picture[i-1].key_frame)
4149 s->current_picture.reference= 1;
4150 if(s->avctx->get_buffer(s->avctx, &s->current_picture) < 0){
4151 av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n");
4155 s->current_picture.key_frame= s->keyframe;
4160 static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data){
4161 SnowContext *s = avctx->priv_data;
4162 RangeCoder * const c= &s->c;
4163 AVFrame *pict = data;
4164 const int width= s->avctx->width;
4165 const int height= s->avctx->height;
4166 int level, orientation, plane_index, i, y;
4167 uint8_t rc_header_bak[sizeof(s->header_state)];
4168 uint8_t rc_block_bak[sizeof(s->block_state)];
4170 ff_init_range_encoder(c, buf, buf_size);
4171 ff_build_rac_states(c, 0.05*(1LL<<32), 256-8);
4175 for(y=0; y<(height>>shift); y++)
4176 memcpy(&s->input_picture.data[i][y * s->input_picture.linesize[i]],
4177 &pict->data[i][y * pict->linesize[i]],
4180 s->new_picture = *pict;
4182 s->m.picture_number= avctx->frame_number;
4183 if(avctx->flags&CODEC_FLAG_PASS2){
4185 pict->pict_type= s->m.rc_context.entry[avctx->frame_number].new_pict_type;
4186 s->keyframe= pict->pict_type==FF_I_TYPE;
4187 if(!(avctx->flags&CODEC_FLAG_QSCALE)) {
4188 pict->quality= ff_rate_estimate_qscale(&s->m, 0);
4189 if (pict->quality < 0)
4193 s->keyframe= avctx->gop_size==0 || avctx->frame_number % avctx->gop_size == 0;
4195 pict->pict_type= s->keyframe ? FF_I_TYPE : FF_P_TYPE;
4198 if(s->pass1_rc && avctx->frame_number == 0)
4199 pict->quality= 2*FF_QP2LAMBDA;
4201 s->qlog= qscale2qlog(pict->quality);
4202 s->lambda = pict->quality * 3/2;
4204 if(s->qlog < 0 || (!pict->quality && (avctx->flags & CODEC_FLAG_QSCALE))){
4205 s->qlog= LOSSLESS_QLOG;
4207 }//else keep previous frame's qlog until after motion estimation
4211 s->m.current_picture_ptr= &s->m.current_picture;
4212 if(pict->pict_type == FF_P_TYPE){
4213 int block_width = (width +15)>>4;
4214 int block_height= (height+15)>>4;
4215 int stride= s->current_picture.linesize[0];
4217 assert(s->current_picture.data[0]);
4218 assert(s->last_picture[0].data[0]);
4220 s->m.avctx= s->avctx;
4221 s->m.current_picture.data[0]= s->current_picture.data[0];
4222 s->m. last_picture.data[0]= s->last_picture[0].data[0];
4223 s->m. new_picture.data[0]= s-> input_picture.data[0];
4224 s->m. last_picture_ptr= &s->m. last_picture;
4226 s->m. last_picture.linesize[0]=
4227 s->m. new_picture.linesize[0]=
4228 s->m.current_picture.linesize[0]= stride;
4229 s->m.uvlinesize= s->current_picture.linesize[1];
4231 s->m.height= height;
4232 s->m.mb_width = block_width;
4233 s->m.mb_height= block_height;
4234 s->m.mb_stride= s->m.mb_width+1;
4235 s->m.b8_stride= 2*s->m.mb_width+1;
4237 s->m.pict_type= pict->pict_type;
4238 s->m.me_method= s->avctx->me_method;
4239 s->m.me.scene_change_score=0;
4240 s->m.flags= s->avctx->flags;
4241 s->m.quarter_sample= (s->avctx->flags & CODEC_FLAG_QPEL)!=0;
4242 s->m.out_format= FMT_H263;
4243 s->m.unrestricted_mv= 1;
4245 s->m.lambda = s->lambda;
4246 s->m.qscale= (s->m.lambda*139 + FF_LAMBDA_SCALE*64) >> (FF_LAMBDA_SHIFT + 7);
4247 s->lambda2= s->m.lambda2= (s->m.lambda*s->m.lambda + FF_LAMBDA_SCALE/2) >> FF_LAMBDA_SHIFT;
4249 s->m.dsp= s->dsp; //move
4255 memcpy(rc_header_bak, s->header_state, sizeof(s->header_state));
4256 memcpy(rc_block_bak, s->block_state, sizeof(s->block_state));
4261 if(pict->pict_type == FF_I_TYPE)
4262 s->spatial_decomposition_count= 5;
4264 s->spatial_decomposition_count= 5;
4266 s->m.pict_type = pict->pict_type;
4267 s->qbias= pict->pict_type == FF_P_TYPE ? 2 : 0;
4269 common_init_after_header(avctx);
4271 if(s->last_spatial_decomposition_count != s->spatial_decomposition_count){
4272 for(plane_index=0; plane_index<3; plane_index++){
4273 calculate_visual_weight(s, &s->plane[plane_index]);
4278 s->m.misc_bits = 8*(s->c.bytestream - s->c.bytestream_start);
4279 encode_blocks(s, 1);
4280 s->m.mv_bits = 8*(s->c.bytestream - s->c.bytestream_start) - s->m.misc_bits;
4282 for(plane_index=0; plane_index<3; plane_index++){
4283 Plane *p= &s->plane[plane_index];
4287 // int bits= put_bits_count(&s->c.pb);
4289 if(!(avctx->flags2 & CODEC_FLAG2_MEMC_ONLY)){
4291 if(pict->data[plane_index]) //FIXME gray hack
4294 s->spatial_idwt_buffer[y*w + x]= pict->data[plane_index][y*pict->linesize[plane_index] + x]<<FRAC_BITS;
4297 predict_plane(s, s->spatial_idwt_buffer, plane_index, 0);
4300 && pict->pict_type == FF_P_TYPE
4301 && !(avctx->flags&CODEC_FLAG_PASS2)
4302 && s->m.me.scene_change_score > s->avctx->scenechange_threshold){
4303 ff_init_range_encoder(c, buf, buf_size);
4304 ff_build_rac_states(c, 0.05*(1LL<<32), 256-8);
4305 pict->pict_type= FF_I_TYPE;
4307 s->current_picture.key_frame=1;
4311 if(s->qlog == LOSSLESS_QLOG){
4314 s->spatial_dwt_buffer[y*w + x]= (s->spatial_idwt_buffer[y*w + x] + (1<<(FRAC_BITS-1))-1)>>FRAC_BITS;
4320 s->spatial_dwt_buffer[y*w + x]=s->spatial_idwt_buffer[y*w + x]<<ENCODER_EXTRA_BITS;
4326 dwt_quantize(s, p, s->spatial_dwt_buffer, w, h, w, s->spatial_decomposition_type);
4328 ff_spatial_dwt(s->spatial_dwt_buffer, w, h, w, s->spatial_decomposition_type, s->spatial_decomposition_count);
4330 if(s->pass1_rc && plane_index==0){
4331 int delta_qlog = ratecontrol_1pass(s, pict);
4332 if (delta_qlog <= INT_MIN)
4335 //reordering qlog in the bitstream would eliminate this reset
4336 ff_init_range_encoder(c, buf, buf_size);
4337 memcpy(s->header_state, rc_header_bak, sizeof(s->header_state));
4338 memcpy(s->block_state, rc_block_bak, sizeof(s->block_state));
4340 encode_blocks(s, 0);
4344 for(level=0; level<s->spatial_decomposition_count; level++){
4345 for(orientation=level ? 1 : 0; orientation<4; orientation++){
4346 SubBand *b= &p->band[level][orientation];
4349 quantize(s, b, b->ibuf, b->buf, b->stride, s->qbias);
4351 decorrelate(s, b, b->ibuf, b->stride, pict->pict_type == FF_P_TYPE, 0);
4352 encode_subband(s, b, b->ibuf, b->parent ? b->parent->ibuf : NULL, b->stride, orientation);
4353 assert(b->parent==NULL || b->parent->stride == b->stride*2);
4355 correlate(s, b, b->ibuf, b->stride, 1, 0);
4359 for(level=0; level<s->spatial_decomposition_count; level++){
4360 for(orientation=level ? 1 : 0; orientation<4; orientation++){
4361 SubBand *b= &p->band[level][orientation];
4363 dequantize(s, b, b->ibuf, b->stride);
4367 ff_spatial_idwt(s->spatial_idwt_buffer, w, h, w, s->spatial_decomposition_type, s->spatial_decomposition_count);
4368 if(s->qlog == LOSSLESS_QLOG){
4371 s->spatial_idwt_buffer[y*w + x]<<=FRAC_BITS;
4375 predict_plane(s, s->spatial_idwt_buffer, plane_index, 1);
4378 if(pict->pict_type == FF_I_TYPE){
4381 s->current_picture.data[plane_index][y*s->current_picture.linesize[plane_index] + x]=
4382 pict->data[plane_index][y*pict->linesize[plane_index] + x];
4386 memset(s->spatial_idwt_buffer, 0, sizeof(IDWTELEM)*w*h);
4387 predict_plane(s, s->spatial_idwt_buffer, plane_index, 1);
4390 if(s->avctx->flags&CODEC_FLAG_PSNR){
4393 if(pict->data[plane_index]) //FIXME gray hack
4396 int d= s->current_picture.data[plane_index][y*s->current_picture.linesize[plane_index] + x] - pict->data[plane_index][y*pict->linesize[plane_index] + x];
4400 s->avctx->error[plane_index] += error;
4401 s->current_picture.error[plane_index] = error;
4406 update_last_header_values(s);
4408 if(s->last_picture[s->max_ref_frames-1].data[0]){
4409 avctx->release_buffer(avctx, &s->last_picture[s->max_ref_frames-1]);
4411 if(s->halfpel_plane[s->max_ref_frames-1][1+i/3][i%3])
4412 av_free(s->halfpel_plane[s->max_ref_frames-1][1+i/3][i%3] - EDGE_WIDTH*(1+s->current_picture.linesize[i%3]));
4415 s->current_picture.coded_picture_number = avctx->frame_number;
4416 s->current_picture.pict_type = pict->pict_type;
4417 s->current_picture.quality = pict->quality;
4418 s->m.frame_bits = 8*(s->c.bytestream - s->c.bytestream_start);
4419 s->m.p_tex_bits = s->m.frame_bits - s->m.misc_bits - s->m.mv_bits;
4420 s->m.current_picture.display_picture_number =
4421 s->m.current_picture.coded_picture_number = avctx->frame_number;
4422 s->m.current_picture.quality = pict->quality;
4423 s->m.total_bits += 8*(s->c.bytestream - s->c.bytestream_start);
4425 if (ff_rate_estimate_qscale(&s->m, 0) < 0)
4427 if(avctx->flags&CODEC_FLAG_PASS1)
4428 ff_write_pass1_stats(&s->m);
4429 s->m.last_pict_type = s->m.pict_type;
4430 avctx->frame_bits = s->m.frame_bits;
4431 avctx->mv_bits = s->m.mv_bits;
4432 avctx->misc_bits = s->m.misc_bits;
4433 avctx->p_tex_bits = s->m.p_tex_bits;
4437 return ff_rac_terminate(c);
4440 static av_cold void common_end(SnowContext *s){
4441 int plane_index, level, orientation, i;
4443 av_freep(&s->spatial_dwt_buffer);
4444 av_freep(&s->spatial_idwt_buffer);
4447 av_freep(&s->m.me.scratchpad);
4448 av_freep(&s->m.me.map);
4449 av_freep(&s->m.me.score_map);
4450 av_freep(&s->m.obmc_scratchpad);
4452 av_freep(&s->block);
4453 av_freep(&s->scratchbuf);
4455 for(i=0; i<MAX_REF_FRAMES; i++){
4456 av_freep(&s->ref_mvs[i]);
4457 av_freep(&s->ref_scores[i]);
4458 if(s->last_picture[i].data[0])
4459 s->avctx->release_buffer(s->avctx, &s->last_picture[i]);
4462 for(plane_index=0; plane_index<3; plane_index++){
4463 for(level=s->spatial_decomposition_count-1; level>=0; level--){
4464 for(orientation=level ? 1 : 0; orientation<4; orientation++){
4465 SubBand *b= &s->plane[plane_index].band[level][orientation];
4467 av_freep(&b->x_coeff);
4473 static av_cold int encode_end(AVCodecContext *avctx)
4475 SnowContext *s = avctx->priv_data;
4478 av_free(avctx->stats_out);
4483 static av_cold int decode_init(AVCodecContext *avctx)
4485 avctx->pix_fmt= PIX_FMT_YUV420P;
4492 static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt){
4493 const uint8_t *buf = avpkt->data;
4494 int buf_size = avpkt->size;
4495 SnowContext *s = avctx->priv_data;
4496 RangeCoder * const c= &s->c;
4498 AVFrame *picture = data;
4499 int level, orientation, plane_index, i;
4501 ff_init_range_decoder(c, buf, buf_size);
4502 ff_build_rac_states(c, 0.05*(1LL<<32), 256-8);
4504 s->current_picture.pict_type= FF_I_TYPE; //FIXME I vs. P
4505 if(decode_header(s)<0)
4507 common_init_after_header(avctx);
4509 // realloc slice buffer for the case that spatial_decomposition_count changed
4510 slice_buffer_destroy(&s->sb);
4511 slice_buffer_init(&s->sb, s->plane[0].height, (MB_SIZE >> s->block_max_depth) + s->spatial_decomposition_count * 8 + 1, s->plane[0].width, s->spatial_idwt_buffer);
4513 for(plane_index=0; plane_index<3; plane_index++){
4514 Plane *p= &s->plane[plane_index];
4515 p->fast_mc= p->diag_mc && p->htaps==6 && p->hcoeff[0]==40
4516 && p->hcoeff[1]==-10
4520 if(!s->block) alloc_blocks(s);
4523 //keyframe flag duplication mess FIXME
4524 if(avctx->debug&FF_DEBUG_PICT_INFO)
4525 av_log(avctx, AV_LOG_ERROR, "keyframe:%d qlog:%d\n", s->keyframe, s->qlog);
4529 for(plane_index=0; plane_index<3; plane_index++){
4530 Plane *p= &s->plane[plane_index];
4534 int decode_state[MAX_DECOMPOSITIONS][4][1]; /* Stored state info for unpack_coeffs. 1 variable per instance. */
4536 if(s->avctx->debug&2048){
4537 memset(s->spatial_dwt_buffer, 0, sizeof(DWTELEM)*w*h);
4538 predict_plane(s, s->spatial_idwt_buffer, plane_index, 1);
4542 int v= s->current_picture.data[plane_index][y*s->current_picture.linesize[plane_index] + x];
4543 s->mconly_picture.data[plane_index][y*s->mconly_picture.linesize[plane_index] + x]= v;
4549 for(level=0; level<s->spatial_decomposition_count; level++){
4550 for(orientation=level ? 1 : 0; orientation<4; orientation++){
4551 SubBand *b= &p->band[level][orientation];
4552 unpack_coeffs(s, b, b->parent, orientation);
4558 const int mb_h= s->b_height << s->block_max_depth;
4559 const int block_size = MB_SIZE >> s->block_max_depth;
4560 const int block_w = plane_index ? block_size/2 : block_size;
4562 DWTCompose cs[MAX_DECOMPOSITIONS];
4567 ff_spatial_idwt_buffered_init(cs, &s->sb, w, h, 1, s->spatial_decomposition_type, s->spatial_decomposition_count);
4568 for(mb_y=0; mb_y<=mb_h; mb_y++){
4570 int slice_starty = block_w*mb_y;
4571 int slice_h = block_w*(mb_y+1);
4572 if (!(s->keyframe || s->avctx->debug&512)){
4573 slice_starty = FFMAX(0, slice_starty - (block_w >> 1));
4574 slice_h -= (block_w >> 1);
4577 for(level=0; level<s->spatial_decomposition_count; level++){
4578 for(orientation=level ? 1 : 0; orientation<4; orientation++){
4579 SubBand *b= &p->band[level][orientation];
4582 int our_mb_start = mb_y;
4583 int our_mb_end = (mb_y + 1);
4585 start_y = (mb_y ? ((block_w * our_mb_start) >> (s->spatial_decomposition_count - level)) + s->spatial_decomposition_count - level + extra: 0);
4586 end_y = (((block_w * our_mb_end) >> (s->spatial_decomposition_count - level)) + s->spatial_decomposition_count - level + extra);
4587 if (!(s->keyframe || s->avctx->debug&512)){
4588 start_y = FFMAX(0, start_y - (block_w >> (1+s->spatial_decomposition_count - level)));
4589 end_y = FFMAX(0, end_y - (block_w >> (1+s->spatial_decomposition_count - level)));
4591 start_y = FFMIN(b->height, start_y);
4592 end_y = FFMIN(b->height, end_y);
4594 if (start_y != end_y){
4595 if (orientation == 0){
4596 SubBand * correlate_band = &p->band[0][0];
4597 int correlate_end_y = FFMIN(b->height, end_y + 1);
4598 int correlate_start_y = FFMIN(b->height, (start_y ? start_y + 1 : 0));
4599 decode_subband_slice_buffered(s, correlate_band, &s->sb, correlate_start_y, correlate_end_y, decode_state[0][0]);
4600 correlate_slice_buffered(s, &s->sb, correlate_band, correlate_band->ibuf, correlate_band->stride, 1, 0, correlate_start_y, correlate_end_y);
4601 dequantize_slice_buffered(s, &s->sb, correlate_band, correlate_band->ibuf, correlate_band->stride, start_y, end_y);
4604 decode_subband_slice_buffered(s, b, &s->sb, start_y, end_y, decode_state[level][orientation]);
4609 for(; yd<slice_h; yd+=4){
4610 ff_spatial_idwt_buffered_slice(&s->dsp, cs, &s->sb, w, h, 1, s->spatial_decomposition_type, s->spatial_decomposition_count, yd);
4613 if(s->qlog == LOSSLESS_QLOG){
4614 for(; yq<slice_h && yq<h; yq++){
4615 IDWTELEM * line = slice_buffer_get_line(&s->sb, yq);
4617 line[x] <<= FRAC_BITS;
4622 predict_slice_buffered(s, &s->sb, s->spatial_idwt_buffer, plane_index, 1, mb_y);
4624 y = FFMIN(p->height, slice_starty);
4625 end_y = FFMIN(p->height, slice_h);
4627 slice_buffer_release(&s->sb, y++);
4630 slice_buffer_flush(&s->sb);
4637 if(s->last_picture[s->max_ref_frames-1].data[0]){
4638 avctx->release_buffer(avctx, &s->last_picture[s->max_ref_frames-1]);
4640 if(s->halfpel_plane[s->max_ref_frames-1][1+i/3][i%3])
4641 av_free(s->halfpel_plane[s->max_ref_frames-1][1+i/3][i%3] - EDGE_WIDTH*(1+s->current_picture.linesize[i%3]));
4644 if(!(s->avctx->debug&2048))
4645 *picture= s->current_picture;
4647 *picture= s->mconly_picture;
4649 *data_size = sizeof(AVFrame);
4651 bytes_read= c->bytestream - c->bytestream_start;
4652 if(bytes_read ==0) av_log(s->avctx, AV_LOG_ERROR, "error at end of frame\n"); //FIXME
4657 static av_cold int decode_end(AVCodecContext *avctx)
4659 SnowContext *s = avctx->priv_data;
4661 slice_buffer_destroy(&s->sb);
4668 AVCodec snow_decoder = {
4672 sizeof(SnowContext),
4677 0 /*CODEC_CAP_DR1*/ /*| CODEC_CAP_DRAW_HORIZ_BAND*/,
4679 .long_name = NULL_IF_CONFIG_SMALL("Snow"),
4682 #if CONFIG_SNOW_ENCODER
4683 AVCodec snow_encoder = {
4687 sizeof(SnowContext),
4691 .long_name = NULL_IF_CONFIG_SMALL("Snow"),
4701 #include "libavutil/lfg.h"
4706 int buffer[2][width*height];
4710 s.spatial_decomposition_count=6;
4711 s.spatial_decomposition_type=1;
4713 av_lfg_init(&prn, 1);
4715 printf("testing 5/3 DWT\n");
4716 for(i=0; i<width*height; i++)
4717 buffer[0][i] = buffer[1][i] = av_lfg_get(&prn) % 54321 - 12345;
4719 ff_spatial_dwt(buffer[0], width, height, width, s.spatial_decomposition_type, s.spatial_decomposition_count);
4720 ff_spatial_idwt(buffer[0], width, height, width, s.spatial_decomposition_type, s.spatial_decomposition_count);
4722 for(i=0; i<width*height; i++)
4723 if(buffer[0][i]!= buffer[1][i]) printf("fsck: %6d %12d %7d\n",i, buffer[0][i], buffer[1][i]);
4725 printf("testing 9/7 DWT\n");
4726 s.spatial_decomposition_type=0;
4727 for(i=0; i<width*height; i++)
4728 buffer[0][i] = buffer[1][i] = av_lfg_get(&prn) % 54321 - 12345;
4730 ff_spatial_dwt(buffer[0], width, height, width, s.spatial_decomposition_type, s.spatial_decomposition_count);
4731 ff_spatial_idwt(buffer[0], width, height, width, s.spatial_decomposition_type, s.spatial_decomposition_count);
4733 for(i=0; i<width*height; i++)
4734 if(FFABS(buffer[0][i] - buffer[1][i])>20) printf("fsck: %6d %12d %7d\n",i, buffer[0][i], buffer[1][i]);
4737 printf("testing AC coder\n");
4738 memset(s.header_state, 0, sizeof(s.header_state));
4739 ff_init_range_encoder(&s.c, buffer[0], 256*256);
4740 ff_init_cabac_states(&s.c, ff_h264_lps_range, ff_h264_mps_state, ff_h264_lps_state, 64);
4742 for(i=-256; i<256; i++){
4743 put_symbol(&s.c, s.header_state, i*i*i/3*FFABS(i), 1);
4745 ff_rac_terminate(&s.c);
4747 memset(s.header_state, 0, sizeof(s.header_state));
4748 ff_init_range_decoder(&s.c, buffer[0], 256*256);
4749 ff_init_cabac_states(&s.c, ff_h264_lps_range, ff_h264_mps_state, ff_h264_lps_state, 64);
4751 for(i=-256; i<256; i++){
4753 j= get_symbol(&s.c, s.header_state, 1);
4754 if(j!=i*i*i/3*FFABS(i)) printf("fsck: %d != %d\n", i, j);
4758 int level, orientation, x, y;
4759 int64_t errors[8][4];
4762 memset(errors, 0, sizeof(errors));
4763 s.spatial_decomposition_count=3;
4764 s.spatial_decomposition_type=0;
4765 for(level=0; level<s.spatial_decomposition_count; level++){
4766 for(orientation=level ? 1 : 0; orientation<4; orientation++){
4767 int w= width >> (s.spatial_decomposition_count-level);
4768 int h= height >> (s.spatial_decomposition_count-level);
4769 int stride= width << (s.spatial_decomposition_count-level);
4770 DWTELEM *buf= buffer[0];
4773 if(orientation&1) buf+=w;
4774 if(orientation>1) buf+=stride>>1;
4776 memset(buffer[0], 0, sizeof(int)*width*height);
4777 buf[w/2 + h/2*stride]= 256*256;
4778 ff_spatial_idwt(buffer[0], width, height, width, s.spatial_decomposition_type, s.spatial_decomposition_count);
4779 for(y=0; y<height; y++){
4780 for(x=0; x<width; x++){
4781 int64_t d= buffer[0][x + y*width];
4783 if(FFABS(width/2-x)<9 && FFABS(height/2-y)<9 && level==2) printf("%8"PRId64" ", d);
4785 if(FFABS(height/2-y)<9 && level==2) printf("\n");
4787 error= (int)(sqrt(error)+0.5);
4788 errors[level][orientation]= error;
4789 if(g) g=av_gcd(g, error);
4793 printf("static int const visual_weight[][4]={\n");
4794 for(level=0; level<s.spatial_decomposition_count; level++){
4796 for(orientation=0; orientation<4; orientation++){
4797 printf("%8"PRId64",", errors[level][orientation]/g);
4804 int w= width >> (s.spatial_decomposition_count-level);
4805 //int h= height >> (s.spatial_decomposition_count-level);
4806 int stride= width << (s.spatial_decomposition_count-level);
4807 DWTELEM *buf= buffer[0];
4813 memset(buffer[0], 0, sizeof(int)*width*height);
4815 for(y=0; y<height; y++){
4816 for(x=0; x<width; x++){
4817 int tab[4]={0,2,3,1};
4818 buffer[0][x+width*y]= 256*256*tab[(x&1) + 2*(y&1)];
4821 ff_spatial_dwt(buffer[0], width, height, width, s.spatial_decomposition_type, s.spatial_decomposition_count);
4825 buf[x + y*stride ]=169;
4826 buf[x + y*stride-w]=64;
4829 ff_spatial_idwt(buffer[0], width, height, width, s.spatial_decomposition_type, s.spatial_decomposition_count);
4831 for(y=0; y<height; y++){
4832 for(x=0; x<width; x++){
4833 int64_t d= buffer[0][x + y*width];
4835 if(FFABS(width/2-x)<9 && FFABS(height/2-y)<9) printf("%8"PRId64" ", d);
4837 if(FFABS(height/2-y)<9) printf("\n");