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
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
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.
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.
33 #include <xmmintrin.h>
36 #include "opj_includes.h"
39 /* This table contains the norms of the basis function of the reversible MCT. */
41 static const double mct_norms[3] = { 1.732, .8292, .8292 };
44 /* This table contains the norms of the basis function of the irreversible MCT. */
46 static const double mct_norms_real[3] = { 1.732, 1.805, 1.573 };
49 /* Foward reversible MCT. */
58 for(i = 0; i < n; ++i) {
62 int y = (r + (g * 2) + b) >> 2;
72 /* Inverse reversible MCT. */
81 for (i = 0; i < n; ++i) {
85 int g = y - ((u + v) >> 2);
95 /* Get norm of basis function of reversible MCT. */
97 double mct_getnorm(int compno) {
98 return mct_norms[compno];
102 /* Foward irreversible MCT. */
104 void mct_encode_real(
111 for(i = 0; i < n; ++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);
125 /* Inverse irreversible MCT. */
127 void mct_decode_real(
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) {
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);
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);
172 for(i = 0; i < n; ++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);
186 /* Get norm of basis function of irreversible MCT. */
188 double mct_getnorm_real(int compno) {
189 return mct_norms_real[compno];
193 opj_bool mct_decode_custom(
195 OPJ_BYTE * pDecodingData,
196 // size of components
200 // nb of components (i.e. size of pData)
202 // tells if the data is signed
210 OPJ_FLOAT32 * lCurrentData = 00;
211 OPJ_FLOAT32 * lCurrentResult = 00;
212 OPJ_FLOAT32 ** lData = (OPJ_FLOAT32 **) pData;
214 lCurrentData = (OPJ_FLOAT32 *) opj_malloc (2 * pNbComp * sizeof(OPJ_FLOAT32));
220 lCurrentResult = lCurrentData + pNbComp;
225 lMct = (OPJ_FLOAT32 *) pDecodingData;
229 lCurrentData[j] = (OPJ_FLOAT32) (*(lData[j]));
234 lCurrentResult[j] = 0;
238 lCurrentResult[j] += *(lMct++) * lCurrentData[k];
240 *(lData[j]++) = (OPJ_FLOAT32) (lCurrentResult[j]);
243 opj_free(lCurrentData);