| J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2003 Sun Microsystems, Inc. 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. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | |
| 27 | /* |
| 28 | * FUNCTIONS |
| 29 | * mlib_c_ImageConvClearEdge - Set edge of an image to a specific |
| 30 | * color. (for float-point image) |
| 31 | * |
| 32 | * SYNOPSIS |
| 33 | * mlib_status mlib_c_ImageConvClearEdge_Fp(mlib_image *img, |
| 34 | * mlib_s32 dx_l, |
| 35 | * mlib_s32 dx_r, |
| 36 | * mlib_s32 dy_t, |
| 37 | * mlib_s32 dy_b, |
| 38 | * const mlib_d64 *color, |
| 39 | * mlib_s32 cmask) |
| 40 | * |
| 41 | * ARGUMENT |
| 42 | * img Pointer to an image. |
| 43 | * dx_l Number of columns on the left side of the |
| 44 | * image to be cleared. |
| 45 | * dx_r Number of columns on the right side of the |
| 46 | * image to be cleared. |
| 47 | * dy_t Number of rows on the top edge of the |
| 48 | * image to be cleared. |
| 49 | * dy_b Number of rows on the top edge of the |
| 50 | * image to be cleared. |
| 51 | * color Pointer to the color that the edges are set to. |
| 52 | * cmask Channel mask to indicate the channels to be convolved. |
| 53 | * Each bit of which represents a channel in the image. The |
| 54 | * channels corresponded to 1 bits are those to be processed. |
| 55 | * |
| 56 | * RESTRICTION |
| 57 | * img can have 1, 2, 3 or 4 channels of MLIB_FLOAT or MLIB_DOUBLE |
| 58 | * data type. |
| 59 | * |
| 60 | * DESCRIPTION |
| 61 | * Set edge of an image to a specific color. |
| 62 | * The unselected channels are not overwritten. |
| 63 | * If src and dst have just one channel, |
| 64 | * cmask is ignored. |
| 65 | */ |
| 66 | |
| 67 | #include "mlib_image.h" |
| 68 | #include "mlib_ImageConvEdge.h" |
| 69 | |
| 70 | /***************************************************************/ |
| 71 | #define EDGES(chan, type, mask) \ |
| 72 | { \ |
| 73 | type *pimg = (type *) mlib_ImageGetData(img); \ |
| 74 | type color_i; \ |
| 75 | mlib_s32 img_stride = mlib_ImageGetStride(img) / sizeof(type); \ |
| 76 | mlib_s32 i, j, l; \ |
| 77 | mlib_s32 testchan; \ |
| 78 | \ |
| 79 | testchan = 1; \ |
| 80 | for (l = chan - 1; l >= 0; l--) { \ |
| 81 | if ((mask & testchan) == 0) { \ |
| 82 | testchan <<= 1; \ |
| 83 | continue; \ |
| 84 | } \ |
| 85 | testchan <<= 1; \ |
| 86 | color_i = (type) color[l]; \ |
| 87 | for (j = 0; j < dx_l; j++) { \ |
| 88 | for (i = dy_t; i < (img_height - dy_b); i++) { \ |
| 89 | pimg[i * img_stride + l + j * chan] = color_i; \ |
| 90 | } \ |
| 91 | } \ |
| 92 | for (j = 0; j < dx_r; j++) { \ |
| 93 | for (i = dy_t; i < (img_height - dy_b); i++) { \ |
| 94 | pimg[i * img_stride + l + (img_width - 1 - j) * chan] = color_i; \ |
| 95 | } \ |
| 96 | } \ |
| 97 | for (i = 0; i < dy_t; i++) { \ |
| 98 | for (j = 0; j < img_width; j++) { \ |
| 99 | pimg[i * img_stride + l + j * chan] = color_i; \ |
| 100 | } \ |
| 101 | } \ |
| 102 | for (i = 0; i < dy_b; i++) { \ |
| 103 | for (j = 0; j < img_width; j++) { \ |
| 104 | pimg[(img_height - 1 - i) * img_stride + l + j * chan] = color_i; \ |
| 105 | } \ |
| 106 | } \ |
| 107 | } \ |
| 108 | } |
| 109 | |
| 110 | /***************************************************************/ |
| 111 | mlib_status mlib_ImageConvClearEdge_Fp(mlib_image *img, |
| 112 | mlib_s32 dx_l, |
| 113 | mlib_s32 dx_r, |
| 114 | mlib_s32 dy_t, |
| 115 | mlib_s32 dy_b, |
| 116 | const mlib_d64 *color, |
| 117 | mlib_s32 cmask) |
| 118 | { |
| 119 | mlib_s32 img_width = mlib_ImageGetWidth(img); |
| 120 | mlib_s32 img_height = mlib_ImageGetHeight(img); |
| 121 | mlib_s32 channel = mlib_ImageGetChannels(img); |
| 122 | |
| 123 | if (dx_l + dx_r > img_width) { |
| 124 | dx_l = img_width; |
| 125 | dx_r = 0; |
| 126 | } |
| 127 | |
| 128 | if (dy_t + dy_b > img_height) { |
| 129 | dy_t = img_height; |
| 130 | dy_b = 0; |
| 131 | } |
| 132 | |
| 133 | if (channel == 1) cmask = 1; |
| 134 | |
| 135 | switch (mlib_ImageGetType(img)) { |
| 136 | case MLIB_FLOAT: |
| 137 | EDGES(channel,mlib_f32, cmask); |
| 138 | break; |
| 139 | case MLIB_DOUBLE: |
| 140 | EDGES(channel,mlib_d64, cmask); |
| 141 | break; |
| 142 | default: |
| 143 | return MLIB_FAILURE; |
| 144 | } |
| 145 | |
| 146 | return MLIB_SUCCESS; |
| 147 | } |
| 148 | |
| 149 | /***************************************************************/ |