1 /*
2 * Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26
27 /*
28 * FUNCTION
29 * Internal functions for mlib_ImageAffine with Nearest Neighbor filtering.
30 */
31
32 #include "mlib_ImageAffine.h"
33
34 /***************************************************************/
35 #define DECLAREVAR_BIT() \
36 DECLAREVAR0(); \
37 mlib_s32 ySrc; \
38 DTYPE *srcPixelPtr; \
39 DTYPE *srcPixelPtr0; \
40 DTYPE *srcPixelPtr1; \
41 DTYPE *srcPixelPtr2; \
42 DTYPE *srcPixelPtr3; \
43 DTYPE *srcPixelPtr4; \
44 DTYPE *srcPixelPtr5; \
45 DTYPE *srcPixelPtr6; \
46 DTYPE *srcPixelPtr7
47
48 /***************************************************************/
49 #define CLIP_BIT() \
50 dstData += dstYStride; \
51 xLeft = leftEdges[j] + d_bitoff; \
52 xRight = rightEdges[j] + d_bitoff; \
53 X = xStarts[j] + (s_bitoff << MLIB_SHIFT); \
54 Y = yStarts[j]; \
55 if (xLeft > xRight) continue
56
57 /***************************************************************/
58 #define DTYPE mlib_u8
59
60 void mlib_ImageAffine_bit_1ch_nn(mlib_affine_param *param,
61 mlib_s32 s_bitoff,
62 mlib_s32 d_bitoff)
63 {
64 DECLAREVAR_BIT();
65 mlib_s32 i, bit, res;
66
67 for (j = yStart; j <= yFinish; j++) {
68
69 CLIP_BIT();
70 xRight++;
71
72 i = xLeft;
73
74 if (i & 7) {
75 mlib_u8 *dp = dstData + (i >> 3);
76 mlib_s32 res = dp[0];
77 mlib_s32 i_end = i + (8 - (i & 7));
78
79 if (i_end > xRight)
80 i_end = xRight;
81
82 for (; i < i_end; i++) {
83 bit = 7 - (i & 7);
84 ySrc = MLIB_POINTER_SHIFT(Y);
85 srcPixelPtr = MLIB_POINTER_GET(lineAddr, ySrc);
86
87 res = (res & ~(1 << bit)) | (((srcPixelPtr[X >> (MLIB_SHIFT + 3)] >> (7 - ((X >> MLIB_SHIFT) & 7))) & 1) << bit);
88
89 X += dX;
90 Y += dY;
91 }
92
93 dp[0] = res;
94 }
95
96 #ifdef __SUNPRO_C
97 #pragma pipeloop(0)
98 #endif /* __SUNPRO_C */
99 for (; i <= (xRight - 8); i += 8) {
100 srcPixelPtr0 = MLIB_POINTER_GET(lineAddr, MLIB_POINTER_SHIFT(Y));
101 Y += dY;
102 res = ((srcPixelPtr0[X >> (MLIB_SHIFT + 3)] << (((X >> MLIB_SHIFT)) & 7)) & 0x0080);
103 X += dX;
104
105 srcPixelPtr1 = MLIB_POINTER_GET(lineAddr, MLIB_POINTER_SHIFT(Y));
106 Y += dY;
107 res |= ((srcPixelPtr1[X >> (MLIB_SHIFT + 3)] << (((X >> MLIB_SHIFT) - 1) & 7)) & 0x4040);
108 X += dX;
109
110 srcPixelPtr2 = MLIB_POINTER_GET(lineAddr, MLIB_POINTER_SHIFT(Y));
111 Y += dY;
112 res |= ((srcPixelPtr2[X >> (MLIB_SHIFT + 3)] << (((X >> MLIB_SHIFT) - 2) & 7)) & 0x2020);
113 X += dX;
114
115 srcPixelPtr3 = MLIB_POINTER_GET(lineAddr, MLIB_POINTER_SHIFT(Y));
116 Y += dY;
117 res |= ((srcPixelPtr3[X >> (MLIB_SHIFT + 3)] << (((X >> MLIB_SHIFT) - 3) & 7)) & 0x1010);
118 X += dX;
119
120 srcPixelPtr4 = MLIB_POINTER_GET(lineAddr, MLIB_POINTER_SHIFT(Y));
121 Y += dY;
122 res |= ((srcPixelPtr4[X >> (MLIB_SHIFT + 3)] << (((X >> MLIB_SHIFT) - 4) & 7)) & 0x0808);
123 X += dX;
124
125 srcPixelPtr5 = MLIB_POINTER_GET(lineAddr, MLIB_POINTER_SHIFT(Y));
126 Y += dY;
127 res |= ((srcPixelPtr5[X >> (MLIB_SHIFT + 3)] << (((X >> MLIB_SHIFT) - 5) & 7)) & 0x0404);
128 X += dX;
129
130 srcPixelPtr6 = MLIB_POINTER_GET(lineAddr, MLIB_POINTER_SHIFT(Y));
131 Y += dY;
132 res |= ((srcPixelPtr6[X >> (MLIB_SHIFT + 3)] << (((X >> MLIB_SHIFT) - 6) & 7)) & 0x0202);
133 X += dX;
134
135 srcPixelPtr7 = MLIB_POINTER_GET(lineAddr, MLIB_POINTER_SHIFT(Y));
136 Y += dY;
137 res |= ((srcPixelPtr7[X >> (MLIB_SHIFT + 3)] >> (7 - ((X >> MLIB_SHIFT) & 7))) & 0x0001);
138 X += dX;
139
140 dstData[i >> 3] = res | (res >> 8);
141 }
142
143 if (i < xRight) {
144 mlib_u8 *dp = dstData + (i >> 3);
145 mlib_s32 res = dp[0];
146
147 for (; i < xRight; i++) {
148 bit = 7 - (i & 7);
149 ySrc = MLIB_POINTER_SHIFT(Y);
150 srcPixelPtr = MLIB_POINTER_GET(lineAddr, ySrc);
151
152 res = (res & ~(1 << bit)) | (((srcPixelPtr[X >> (MLIB_SHIFT + 3)] >> (7 - ((X >> MLIB_SHIFT) & 7))) & 1) << bit);
153
154 X += dX;
155 Y += dY;
156 }
157
158 dp[0] = res;
159 }
160 }
161 }
162
163 /***************************************************************/