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2f8d3364 KS |
1 | /* |
2 | * This program is free software; you can redistribute it and/or modify it | |
3 | * under the terms of the GNU Lesser General Public License as published by | |
4 | * the Free Software Foundation; either version 2.1 of the License, or | |
5 | * (at your option) any later version. | |
6 | * | |
7 | * This program is distributed in the hope that it will be useful, but | |
8 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
10 | * Lesser General Public License for more details. | |
11 | * | |
12 | * Copyright (C) 2012-2013 Kay Sievers <kay@vrfy.org> | |
13 | * Copyright (C) 2012 Harald Hoyer <harald@redhat.com> | |
14 | */ | |
15 | ||
16 | #include <efi.h> | |
17 | #include <efilib.h> | |
18 | ||
2bdbf321 | 19 | #include "graphics.h" |
2f8d3364 | 20 | #include "splash.h" |
cf0fbc49 | 21 | #include "util.h" |
2f8d3364 KS |
22 | |
23 | struct bmp_file { | |
24 | CHAR8 signature[2]; | |
25 | UINT32 size; | |
26 | UINT16 reserved[2]; | |
27 | UINT32 offset; | |
28 | } __attribute__((packed)); | |
29 | ||
30 | /* we require at least BITMAPINFOHEADER, later versions are | |
31 | accepted, but their features ignored */ | |
32 | struct bmp_dib { | |
33 | UINT32 size; | |
34 | UINT32 x; | |
35 | UINT32 y; | |
36 | UINT16 planes; | |
37 | UINT16 depth; | |
38 | UINT32 compression; | |
39 | UINT32 image_size; | |
40 | INT32 x_pixel_meter; | |
41 | INT32 y_pixel_meter; | |
42 | UINT32 colors_used; | |
43 | UINT32 colors_important; | |
44 | } __attribute__((packed)); | |
45 | ||
46 | struct bmp_map { | |
47 | UINT8 blue; | |
48 | UINT8 green; | |
49 | UINT8 red; | |
50 | UINT8 reserved; | |
51 | } __attribute__((packed)); | |
52 | ||
53 | EFI_STATUS bmp_parse_header(UINT8 *bmp, UINTN size, struct bmp_dib **ret_dib, | |
54 | struct bmp_map **ret_map, UINT8 **pixmap) { | |
55 | struct bmp_file *file; | |
56 | struct bmp_dib *dib; | |
57 | struct bmp_map *map; | |
58 | UINTN row_size; | |
59 | ||
60 | if (size < sizeof(struct bmp_file) + sizeof(struct bmp_dib)) | |
61 | return EFI_INVALID_PARAMETER; | |
62 | ||
63 | /* check file header */ | |
64 | file = (struct bmp_file *)bmp; | |
65 | if (file->signature[0] != 'B' || file->signature[1] != 'M') | |
66 | return EFI_INVALID_PARAMETER; | |
67 | if (file->size != size) | |
68 | return EFI_INVALID_PARAMETER; | |
69 | if (file->size < file->offset) | |
70 | return EFI_INVALID_PARAMETER; | |
71 | ||
72 | /* check device-independent bitmap */ | |
73 | dib = (struct bmp_dib *)(bmp + sizeof(struct bmp_file)); | |
74 | if (dib->size < sizeof(struct bmp_dib)) | |
75 | return EFI_UNSUPPORTED; | |
76 | ||
77 | switch (dib->depth) { | |
78 | case 1: | |
79 | case 4: | |
80 | case 8: | |
81 | case 24: | |
82 | if (dib->compression != 0) | |
83 | return EFI_UNSUPPORTED; | |
84 | ||
85 | break; | |
86 | ||
87 | case 16: | |
88 | case 32: | |
89 | if (dib->compression != 0 && dib->compression != 3) | |
90 | return EFI_UNSUPPORTED; | |
91 | ||
92 | break; | |
93 | ||
94 | default: | |
95 | return EFI_UNSUPPORTED; | |
96 | } | |
97 | ||
7c5925a4 | 98 | row_size = ((UINTN) dib->depth * dib->x + 31) / 32 * 4; |
2f8d3364 KS |
99 | if (file->size - file->offset < dib->y * row_size) |
100 | return EFI_INVALID_PARAMETER; | |
101 | if (row_size * dib->y > 64 * 1024 * 1024) | |
102 | return EFI_INVALID_PARAMETER; | |
103 | ||
104 | /* check color table */ | |
105 | map = (struct bmp_map *)(bmp + sizeof(struct bmp_file) + dib->size); | |
106 | if (file->offset < sizeof(struct bmp_file) + dib->size) | |
107 | return EFI_INVALID_PARAMETER; | |
108 | ||
109 | if (file->offset > sizeof(struct bmp_file) + dib->size) { | |
110 | UINT32 map_count; | |
111 | UINTN map_size; | |
112 | ||
113 | if (dib->colors_used) | |
114 | map_count = dib->colors_used; | |
115 | else { | |
116 | switch (dib->depth) { | |
117 | case 1: | |
118 | case 4: | |
119 | case 8: | |
120 | map_count = 1 << dib->depth; | |
121 | break; | |
122 | ||
123 | default: | |
124 | map_count = 0; | |
125 | break; | |
126 | } | |
127 | } | |
128 | ||
129 | map_size = file->offset - (sizeof(struct bmp_file) + dib->size); | |
130 | if (map_size != sizeof(struct bmp_map) * map_count) | |
131 | return EFI_INVALID_PARAMETER; | |
132 | } | |
133 | ||
134 | *ret_map = map; | |
135 | *ret_dib = dib; | |
136 | *pixmap = bmp + file->offset; | |
137 | ||
138 | return EFI_SUCCESS; | |
139 | } | |
140 | ||
141 | static VOID pixel_blend(UINT32 *dst, const UINT32 source) { | |
142 | UINT32 alpha, src, src_rb, src_g, dst_rb, dst_g, rb, g; | |
143 | ||
144 | alpha = (source & 0xff); | |
145 | ||
146 | /* convert src from RGBA to XRGB */ | |
147 | src = source >> 8; | |
148 | ||
149 | /* decompose into RB and G components */ | |
150 | src_rb = (src & 0xff00ff); | |
151 | src_g = (src & 0x00ff00); | |
152 | ||
153 | dst_rb = (*dst & 0xff00ff); | |
154 | dst_g = (*dst & 0x00ff00); | |
155 | ||
156 | /* blend */ | |
157 | rb = ((((src_rb - dst_rb) * alpha + 0x800080) >> 8) + dst_rb) & 0xff00ff; | |
158 | g = ((((src_g - dst_g) * alpha + 0x008000) >> 8) + dst_g) & 0x00ff00; | |
159 | ||
160 | *dst = (rb | g); | |
161 | } | |
162 | ||
163 | EFI_STATUS bmp_to_blt(EFI_GRAPHICS_OUTPUT_BLT_PIXEL *buf, | |
164 | struct bmp_dib *dib, struct bmp_map *map, | |
165 | UINT8 *pixmap) { | |
166 | UINT8 *in; | |
167 | UINTN y; | |
168 | ||
169 | /* transform and copy pixels */ | |
170 | in = pixmap; | |
171 | for (y = 0; y < dib->y; y++) { | |
172 | EFI_GRAPHICS_OUTPUT_BLT_PIXEL *out; | |
173 | UINTN row_size; | |
174 | UINTN x; | |
175 | ||
176 | out = &buf[(dib->y - y - 1) * dib->x]; | |
177 | for (x = 0; x < dib->x; x++, in++, out++) { | |
178 | switch (dib->depth) { | |
179 | case 1: { | |
180 | UINTN i; | |
181 | ||
182 | for (i = 0; i < 8 && x < dib->x; i++) { | |
183 | out->Red = map[((*in) >> (7 - i)) & 1].red; | |
184 | out->Green = map[((*in) >> (7 - i)) & 1].green; | |
185 | out->Blue = map[((*in) >> (7 - i)) & 1].blue; | |
186 | out++; | |
187 | x++; | |
188 | } | |
189 | out--; | |
190 | x--; | |
191 | break; | |
192 | } | |
193 | ||
194 | case 4: { | |
195 | UINTN i; | |
196 | ||
197 | i = (*in) >> 4; | |
198 | out->Red = map[i].red; | |
199 | out->Green = map[i].green; | |
200 | out->Blue = map[i].blue; | |
201 | if (x < (dib->x - 1)) { | |
202 | out++; | |
203 | x++; | |
204 | i = (*in) & 0x0f; | |
205 | out->Red = map[i].red; | |
206 | out->Green = map[i].green; | |
207 | out->Blue = map[i].blue; | |
208 | } | |
209 | break; | |
210 | } | |
211 | ||
212 | case 8: | |
213 | out->Red = map[*in].red; | |
214 | out->Green = map[*in].green; | |
215 | out->Blue = map[*in].blue; | |
216 | break; | |
217 | ||
218 | case 16: { | |
219 | UINT16 i = *(UINT16 *) in; | |
220 | ||
221 | out->Red = (i & 0x7c00) >> 7; | |
222 | out->Green = (i & 0x3e0) >> 2; | |
223 | out->Blue = (i & 0x1f) << 3; | |
224 | in += 1; | |
225 | break; | |
226 | } | |
227 | ||
228 | case 24: | |
229 | out->Red = in[2]; | |
230 | out->Green = in[1]; | |
231 | out->Blue = in[0]; | |
232 | in += 2; | |
233 | break; | |
234 | ||
235 | case 32: { | |
236 | UINT32 i = *(UINT32 *) in; | |
237 | ||
238 | pixel_blend((UINT32 *)out, i); | |
239 | ||
240 | in += 3; | |
241 | break; | |
242 | } | |
243 | } | |
244 | } | |
245 | ||
246 | /* add row padding; new lines always start at 32 bit boundary */ | |
247 | row_size = in - pixmap; | |
248 | in += ((row_size + 3) & ~3) - row_size; | |
249 | } | |
250 | ||
251 | return EFI_SUCCESS; | |
252 | } | |
253 | ||
254 | EFI_STATUS graphics_splash(UINT8 *content, UINTN len, const EFI_GRAPHICS_OUTPUT_BLT_PIXEL *background) { | |
255 | EFI_GRAPHICS_OUTPUT_BLT_PIXEL pixel = {}; | |
256 | EFI_GUID GraphicsOutputProtocolGuid = EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID; | |
257 | EFI_GRAPHICS_OUTPUT_PROTOCOL *GraphicsOutput = NULL; | |
258 | struct bmp_dib *dib; | |
259 | struct bmp_map *map; | |
260 | UINT8 *pixmap; | |
261 | UINT64 blt_size; | |
262 | VOID *blt = NULL; | |
263 | UINTN x_pos = 0; | |
264 | UINTN y_pos = 0; | |
265 | EFI_STATUS err; | |
266 | ||
267 | if (!background) { | |
268 | if (StriCmp(L"Apple", ST->FirmwareVendor) == 0) { | |
269 | pixel.Red = 0xc0; | |
270 | pixel.Green = 0xc0; | |
271 | pixel.Blue = 0xc0; | |
272 | } | |
273 | background = &pixel; | |
274 | } | |
275 | ||
276 | err = LibLocateProtocol(&GraphicsOutputProtocolGuid, (VOID **)&GraphicsOutput); | |
277 | if (EFI_ERROR(err)) | |
278 | return err; | |
279 | ||
280 | err = bmp_parse_header(content, len, &dib, &map, &pixmap); | |
281 | if (EFI_ERROR(err)) | |
282 | goto err; | |
283 | ||
9ed794a3 | 284 | if (dib->x < GraphicsOutput->Mode->Info->HorizontalResolution) |
2f8d3364 | 285 | x_pos = (GraphicsOutput->Mode->Info->HorizontalResolution - dib->x) / 2; |
9ed794a3 | 286 | if (dib->y < GraphicsOutput->Mode->Info->VerticalResolution) |
2f8d3364 KS |
287 | y_pos = (GraphicsOutput->Mode->Info->VerticalResolution - dib->y) / 2; |
288 | ||
289 | uefi_call_wrapper(GraphicsOutput->Blt, 10, GraphicsOutput, | |
290 | (EFI_GRAPHICS_OUTPUT_BLT_PIXEL *)background, | |
291 | EfiBltVideoFill, 0, 0, 0, 0, | |
292 | GraphicsOutput->Mode->Info->HorizontalResolution, | |
293 | GraphicsOutput->Mode->Info->VerticalResolution, 0); | |
294 | ||
295 | /* EFI buffer */ | |
296 | blt_size = dib->x * dib->y * sizeof(EFI_GRAPHICS_OUTPUT_BLT_PIXEL); | |
297 | blt = AllocatePool(blt_size); | |
298 | if (!blt) | |
299 | return EFI_OUT_OF_RESOURCES; | |
300 | ||
301 | err = uefi_call_wrapper(GraphicsOutput->Blt, 10, GraphicsOutput, | |
302 | blt, EfiBltVideoToBltBuffer, x_pos, y_pos, 0, 0, | |
303 | dib->x, dib->y, 0); | |
304 | if (EFI_ERROR(err)) | |
305 | goto err; | |
306 | ||
307 | err = bmp_to_blt(blt, dib, map, pixmap); | |
308 | if (EFI_ERROR(err)) | |
309 | goto err; | |
310 | ||
311 | err = graphics_mode(TRUE); | |
312 | if (EFI_ERROR(err)) | |
313 | goto err; | |
314 | ||
315 | err = uefi_call_wrapper(GraphicsOutput->Blt, 10, GraphicsOutput, | |
316 | blt, EfiBltBufferToVideo, 0, 0, x_pos, y_pos, | |
317 | dib->x, dib->y, 0); | |
318 | err: | |
319 | FreePool(blt); | |
320 | return err; | |
321 | } |