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Source at commit 639 created 13 years 8 months ago. By meklort, Updated embedding code, bss segment nolonger overlaps Symbols module. Symbols module can now be loaded correctly | |
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1 | /*␊ |
2 | * Copyright (c) 1995-2002 Apple Computer, Inc. All rights reserved.␊ |
3 | *␊ |
4 | * @APPLE_LICENSE_HEADER_START@␊ |
5 | * ␊ |
6 | * The contents of this file constitute Original Code as defined in and␊ |
7 | * are subject to the Apple Public Source License Version 1.1 (the␊ |
8 | * "License"). You may not use this file except in compliance with the␊ |
9 | * License. Please obtain a copy of the License at␊ |
10 | * http://www.apple.com/publicsource and read it before using this file.␊ |
11 | * ␊ |
12 | * This Original Code and all software distributed under the License are␊ |
13 | * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER␊ |
14 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,␊ |
15 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,␊ |
16 | * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the␊ |
17 | * License for the specific language governing rights and limitations␊ |
18 | * under the License.␊ |
19 | * ␊ |
20 | * @APPLE_LICENSE_HEADER_END@␊ |
21 | */␊ |
22 | #include "boot.h"␊ |
23 | ␊ |
24 | typedef uint8_t UInt8;␊ |
25 | typedef uint16_t UInt16;␊ |
26 | typedef int8_t SInt8;␊ |
27 | typedef int16_t SInt16;␊ |
28 | ␊ |
29 | static void ␊ |
30 | PreviewDecompress16(uint32_t * compressBuffer, ␊ |
31 | uint32_t width, uint32_t height, uint32_t row, ␊ |
32 | uint16_t * output)␊ |
33 | {␊ |
34 | int i, j;␊ |
35 | uint32_t * input;␊ |
36 | ␊ |
37 | uint16_t * sc0 = malloc((width+2) * sizeof(uint16_t));␊ |
38 | uint16_t * sc1 = malloc((width+2) * sizeof(uint16_t));␊ |
39 | uint16_t * sc2 = malloc((width+2) * sizeof(uint16_t));␊ |
40 | uint16_t * sc3 = malloc((width+2) * sizeof(uint16_t));␊ |
41 | uint32_t sr0, sr1, sr2, sr3;␊ |
42 | ␊ |
43 | bzero(sc0, (width+2) * sizeof(uint16_t));␊ |
44 | bzero(sc1, (width+2) * sizeof(uint16_t));␊ |
45 | bzero(sc2, (width+2) * sizeof(uint16_t));␊ |
46 | bzero(sc3, (width+2) * sizeof(uint16_t));␊ |
47 | ␊ |
48 | uint32_t tmp1, tmp2, out;␊ |
49 | for (j = 0; j < (height + 2); j++)␊ |
50 | {␊ |
51 | input = compressBuffer;␊ |
52 | if (j < height)␊ |
53 | input += j;␊ |
54 | else␊ |
55 | input += height - 1;␊ |
56 | input = (uint32_t *)(input[3] + ((uint8_t *)compressBuffer));␊ |
57 | ␊ |
58 | uint32_t data = 0, repeat = 0, fetch = 0, count = 0;␊ |
59 | sr0 = sr1 = sr2 = sr3 = 0;␊ |
60 | ␊ |
61 | for (i = 0; i < (width + 2); i++)␊ |
62 | {␊ |
63 | if (i < width)␊ |
64 | {␊ |
65 | if (!count)␊ |
66 | {␊ |
67 | count = *input++;␊ |
68 | repeat = (count & 0xff000000);␊ |
69 | count ^= repeat;␊ |
70 | fetch = true;␊ |
71 | }␊ |
72 | else␊ |
73 | fetch = (0 == repeat);␊ |
74 | ␊ |
75 | count--;␊ |
76 | ␊ |
77 | if (fetch)␊ |
78 | {␊ |
79 | ␉␉␉␉␉data = *((uint16_t *)input);␊ |
80 | (*((uint16_t *)input))++;␊ |
81 | ␊ |
82 | // grayscale␊ |
83 | // srgb 13933, 46871, 4732␊ |
84 | // ntsc 19595, 38470, 7471␊ |
85 | data = 13933 * (0x1f & (data >> 10))␊ |
86 | + 46871 * (0x1f & (data >> 5))␊ |
87 | + 4732 * (0x1f & data);␊ |
88 | data >>= 13;␊ |
89 | ␊ |
90 | // 70% white, 30 % black␊ |
91 | data *= 19661;␊ |
92 | data += (103 << 16);␊ |
93 | data >>= 16;␊ |
94 | }␊ |
95 | }␊ |
96 | ␊ |
97 | // gauss blur␊ |
98 | tmp2 = sr0 + data;␊ |
99 | sr0 = data;␊ |
100 | tmp1 = sr1 + tmp2;␊ |
101 | sr1 = tmp2;␊ |
102 | tmp2 = sr2 + tmp1;␊ |
103 | sr2 = tmp1;␊ |
104 | tmp1 = sr3 + tmp2;␊ |
105 | sr3 = tmp2;␊ |
106 | ␊ |
107 | tmp2 = sc0[i] + tmp1;␊ |
108 | sc0[i] = tmp1;␊ |
109 | tmp1 = sc1[i] + tmp2;␊ |
110 | sc1[i] = tmp2;␊ |
111 | tmp2 = sc2[i] + tmp1;␊ |
112 | sc2[i] = tmp1;␊ |
113 | out = (128 + sc3[i] + tmp2) >> 11;␊ |
114 | sc3[i] = tmp2;␊ |
115 | ␊ |
116 | out &= 0x1f;␊ |
117 | if ((i > 1) && (j > 1))␊ |
118 | output[i-2] = out | (out << 5) | (out << 10);␊ |
119 | }␊ |
120 | ␊ |
121 | if (j > 1)␊ |
122 | output += row;␊ |
123 | }␊ |
124 | free(sc3);␊ |
125 | free(sc2);␊ |
126 | free(sc1);␊ |
127 | free(sc0);␊ |
128 | }␊ |
129 | ␊ |
130 | static void ␊ |
131 | PreviewDecompress32(uint32_t * compressBuffer, ␊ |
132 | uint32_t width, uint32_t height, uint32_t row, ␊ |
133 | uint32_t * output)␊ |
134 | {␊ |
135 | int i, j;␊ |
136 | uint32_t * input;␊ |
137 | ␊ |
138 | uint16_t * sc0 = malloc((width+2) * sizeof(uint16_t));␊ |
139 | uint16_t * sc1 = malloc((width+2) * sizeof(uint16_t));␊ |
140 | uint16_t * sc2 = malloc((width+2) * sizeof(uint16_t));␊ |
141 | uint16_t * sc3 = malloc((width+2) * sizeof(uint16_t));␊ |
142 | uint32_t sr0, sr1, sr2, sr3;␊ |
143 | ␊ |
144 | bzero(sc0, (width+2) * sizeof(uint16_t));␊ |
145 | bzero(sc1, (width+2) * sizeof(uint16_t));␊ |
146 | bzero(sc2, (width+2) * sizeof(uint16_t));␊ |
147 | bzero(sc3, (width+2) * sizeof(uint16_t));␊ |
148 | ␊ |
149 | uint32_t tmp1, tmp2, out;␊ |
150 | for (j = 0; j < (height + 2); j++)␊ |
151 | {␊ |
152 | input = compressBuffer;␊ |
153 | if (j < height)␊ |
154 | input += j;␊ |
155 | else␊ |
156 | input += height - 1;␊ |
157 | input = (uint32_t *)(input[3] + ((uint8_t *)compressBuffer));␊ |
158 | ␊ |
159 | uint32_t data = 0, repeat = 0, fetch = 0, count = 0;␊ |
160 | sr0 = sr1 = sr2 = sr3 = 0;␊ |
161 | ␊ |
162 | for (i = 0; i < (width + 2); i++)␊ |
163 | {␊ |
164 | if (i < width)␊ |
165 | {␊ |
166 | if (!count)␊ |
167 | {␊ |
168 | count = *input++;␊ |
169 | repeat = (count & 0xff000000);␊ |
170 | count ^= repeat;␊ |
171 | fetch = true;␊ |
172 | }␊ |
173 | else␊ |
174 | fetch = (0 == repeat);␊ |
175 | ␊ |
176 | count--;␊ |
177 | ␊ |
178 | if (fetch)␊ |
179 | {␊ |
180 | data = *input++;␊ |
181 | ␊ |
182 | // grayscale␊ |
183 | // srgb 13933, 46871, 4732␊ |
184 | // ntsc 19595, 38470, 7471␊ |
185 | data = 13933 * (0xff & (data >> 24))␊ |
186 | + 46871 * (0xff & (data >> 16))␊ |
187 | + 4732 * (0xff & data);␊ |
188 | data >>= 16;␊ |
189 | ␊ |
190 | // 70% white, 30 % black␊ |
191 | data *= 19661;␊ |
192 | data += (103 << 16);␊ |
193 | data >>= 16;␊ |
194 | }␊ |
195 | }␊ |
196 | ␊ |
197 | // gauss blur␊ |
198 | tmp2 = sr0 + data;␊ |
199 | sr0 = data;␊ |
200 | tmp1 = sr1 + tmp2;␊ |
201 | sr1 = tmp2;␊ |
202 | tmp2 = sr2 + tmp1;␊ |
203 | sr2 = tmp1;␊ |
204 | tmp1 = sr3 + tmp2;␊ |
205 | sr3 = tmp2;␊ |
206 | ␊ |
207 | tmp2 = sc0[i] + tmp1;␊ |
208 | sc0[i] = tmp1;␊ |
209 | tmp1 = sc1[i] + tmp2;␊ |
210 | sc1[i] = tmp2;␊ |
211 | tmp2 = sc2[i] + tmp1;␊ |
212 | sc2[i] = tmp1;␊ |
213 | out = (128 + sc3[i] + tmp2) >> 8;␊ |
214 | sc3[i] = tmp2;␊ |
215 | ␊ |
216 | out &= 0xff;␊ |
217 | if ((i > 1) && (j > 1))␊ |
218 | output[i-2] = out | (out << 8) | (out << 16);␊ |
219 | }␊ |
220 | ␊ |
221 | if (j > 1)␊ |
222 | output += row;␊ |
223 | }␊ |
224 | ␊ |
225 | free(sc3);␊ |
226 | free(sc2);␊ |
227 | free(sc1);␊ |
228 | free(sc0);␊ |
229 | }␊ |
230 | ␊ |
231 | void *␊ |
232 | DecompressData(void *srcbase, int *dw, int *dh, int *bitsPerPixel)␊ |
233 | {␊ |
234 | uint32_t * src = (uint32_t *) srcbase;␊ |
235 | ␉void * ret;␊ |
236 | ␊ |
237 | *bitsPerPixel = 8 * ((int) src[0]);␊ |
238 | ␉*dw = (int) src[1];␊ |
239 | ␉*dh = (int) src[2];␊ |
240 | ␉␊ |
241 | ␉ret = malloc ((*dw * *dh * *bitsPerPixel)/ 8);␊ |
242 | ␊ |
243 | switch(*bitsPerPixel)␊ |
244 | {␊ |
245 | case 32:␊ |
246 | PreviewDecompress32((uint32_t *)srcbase, *dw, *dh, *dw, ret);␊ |
247 | return ret;␊ |
248 | case 16:␊ |
249 | PreviewDecompress16((uint32_t *)srcbase, *dw, *dh, *dw, ret);␊ |
250 | return ret;␊ |
251 | default:␊ |
252 | return 0;␊ |
253 | }␊ |
254 | }␊ |
255 |