corrade-vassal – Blame information for rev 1

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1 vero 1 /*
2 * Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
3 * Copyright (c) 2002-2007, Professor Benoit Macq
4 * Copyright (c) 2001-2003, David Janssens
5 * Copyright (c) 2002-2003, Yannick Verschueren
6 * Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe
7 * Copyright (c) 2005, Herve Drolon, FreeImage Team
8 * All rights reserved.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
20 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
23 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31  
32 #ifdef __SSE__
33 #include <xmmintrin.h>
34 #endif
35  
36 #include "opj_includes.h"
37  
38 /* <summary> */
39 /* This table contains the norms of the basis function of the reversible MCT. */
40 /* </summary> */
41 static const double mct_norms[3] = { 1.732, .8292, .8292 };
42  
43 /* <summary> */
44 /* This table contains the norms of the basis function of the irreversible MCT. */
45 /* </summary> */
46 static const double mct_norms_real[3] = { 1.732, 1.805, 1.573 };
47  
48 /* <summary> */
49 /* Foward reversible MCT. */
50 /* </summary> */
51 void mct_encode(
52 int* restrict c0,
53 int* restrict c1,
54 int* restrict c2,
55 int n)
56 {
57 int i;
58 for(i = 0; i < n; ++i) {
59 int r = c0[i];
60 int g = c1[i];
61 int b = c2[i];
62 int y = (r + (g * 2) + b) >> 2;
63 int u = b - g;
64 int v = r - g;
65 c0[i] = y;
66 c1[i] = u;
67 c2[i] = v;
68 }
69 }
70  
71 /* <summary> */
72 /* Inverse reversible MCT. */
73 /* </summary> */
74 void mct_decode(
75 int* restrict c0,
76 int* restrict c1,
77 int* restrict c2,
78 int n)
79 {
80 int i;
81 for (i = 0; i < n; ++i) {
82 int y = c0[i];
83 int u = c1[i];
84 int v = c2[i];
85 int g = y - ((u + v) >> 2);
86 int r = v + g;
87 int b = u + g;
88 c0[i] = r;
89 c1[i] = g;
90 c2[i] = b;
91 }
92 }
93  
94 /* <summary> */
95 /* Get norm of basis function of reversible MCT. */
96 /* </summary> */
97 double mct_getnorm(int compno) {
98 return mct_norms[compno];
99 }
100  
101 /* <summary> */
102 /* Foward irreversible MCT. */
103 /* </summary> */
104 void mct_encode_real(
105 int* restrict c0,
106 int* restrict c1,
107 int* restrict c2,
108 int n)
109 {
110 int i;
111 for(i = 0; i < n; ++i) {
112 int r = c0[i];
113 int g = c1[i];
114 int b = c2[i];
115 int y = fix_mul(r, 2449) + fix_mul(g, 4809) + fix_mul(b, 934);
116 int u = -fix_mul(r, 1382) - fix_mul(g, 2714) + fix_mul(b, 4096);
117 int v = fix_mul(r, 4096) - fix_mul(g, 3430) - fix_mul(b, 666);
118 c0[i] = y;
119 c1[i] = u;
120 c2[i] = v;
121 }
122 }
123  
124 /* <summary> */
125 /* Inverse irreversible MCT. */
126 /* </summary> */
127 void mct_decode_real(
128 float* restrict c0,
129 float* restrict c1,
130 float* restrict c2,
131 int n)
132 {
133 int i;
134 #ifdef __SSE__
135 __m128 vrv, vgu, vgv, vbu;
136 vrv = _mm_set1_ps(1.402f);
137 vgu = _mm_set1_ps(0.34413f);
138 vgv = _mm_set1_ps(0.71414f);
139 vbu = _mm_set1_ps(1.772f);
140 for (i = 0; i < (n >> 3); ++i) {
141 __m128 vy, vu, vv;
142 __m128 vr, vg, vb;
143  
144 vy = _mm_load_ps(c0);
145 vu = _mm_load_ps(c1);
146 vv = _mm_load_ps(c2);
147 vr = _mm_add_ps(vy, _mm_mul_ps(vv, vrv));
148 vg = _mm_sub_ps(_mm_sub_ps(vy, _mm_mul_ps(vu, vgu)), _mm_mul_ps(vv, vgv));
149 vb = _mm_add_ps(vy, _mm_mul_ps(vu, vbu));
150 _mm_store_ps(c0, vr);
151 _mm_store_ps(c1, vg);
152 _mm_store_ps(c2, vb);
153 c0 += 4;
154 c1 += 4;
155 c2 += 4;
156  
157 vy = _mm_load_ps(c0);
158 vu = _mm_load_ps(c1);
159 vv = _mm_load_ps(c2);
160 vr = _mm_add_ps(vy, _mm_mul_ps(vv, vrv));
161 vg = _mm_sub_ps(_mm_sub_ps(vy, _mm_mul_ps(vu, vgu)), _mm_mul_ps(vv, vgv));
162 vb = _mm_add_ps(vy, _mm_mul_ps(vu, vbu));
163 _mm_store_ps(c0, vr);
164 _mm_store_ps(c1, vg);
165 _mm_store_ps(c2, vb);
166 c0 += 4;
167 c1 += 4;
168 c2 += 4;
169 }
170 n &= 7;
171 #endif
172 for(i = 0; i < n; ++i) {
173 float y = c0[i];
174 float u = c1[i];
175 float v = c2[i];
176 float r = y + (v * 1.402f);
177 float g = y - (u * 0.34413f) - (v * (0.71414f));
178 float b = y + (u * 1.772f);
179 c0[i] = r;
180 c1[i] = g;
181 c2[i] = b;
182 }
183 }
184  
185 /* <summary> */
186 /* Get norm of basis function of irreversible MCT. */
187 /* </summary> */
188 double mct_getnorm_real(int compno) {
189 return mct_norms_real[compno];
190 }