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6#include <common.h>
7#include <bmp_layout.h>
8#include <dm.h>
9#include <mapmem.h>
10#include <splash.h>
11#include <video.h>
12#include <watchdog.h>
13#include <asm/unaligned.h>
14
15#ifdef CONFIG_VIDEO_BMP_RLE8
16#define BMP_RLE8_ESCAPE 0
17#define BMP_RLE8_EOL 0
18#define BMP_RLE8_EOBMP 1
19#define BMP_RLE8_DELTA 2
20
21static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
22 int cnt)
23{
24 while (cnt > 0) {
25 *(*fbp)++ = cmap[*bmap++];
26 cnt--;
27 }
28}
29
30static void draw_encoded_bitmap(ushort **fbp, ushort col, int cnt)
31{
32 ushort *fb = *fbp;
33
34 while (cnt > 0) {
35 *fb++ = col;
36 cnt--;
37 }
38 *fbp = fb;
39}
40
41static void video_display_rle8_bitmap(struct udevice *dev,
42 struct bmp_image *bmp, ushort *cmap,
43 uchar *fb, int x_off, int y_off)
44{
45 struct video_priv *priv = dev_get_uclass_priv(dev);
46 uchar *bmap;
47 ulong width, height;
48 ulong cnt, runlen;
49 int x, y;
50 int decode = 1;
51
52 debug("%s\n", __func__);
53 width = get_unaligned_le32(&bmp->header.width);
54 height = get_unaligned_le32(&bmp->header.height);
55 bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
56
57 x = 0;
58 y = height - 1;
59
60 while (decode) {
61 if (bmap[0] == BMP_RLE8_ESCAPE) {
62 switch (bmap[1]) {
63 case BMP_RLE8_EOL:
64
65 bmap += 2;
66 x = 0;
67 y--;
68
69 fb -= (width * 2 + priv->line_length);
70 break;
71 case BMP_RLE8_EOBMP:
72
73 decode = 0;
74 break;
75 case BMP_RLE8_DELTA:
76
77 x += bmap[2];
78 y -= bmap[3];
79
80 fb = (uchar *)(priv->fb + (y + y_off - 1)
81 * priv->line_length + (x + x_off) * 2);
82 bmap += 4;
83 break;
84 default:
85
86 runlen = bmap[1];
87 bmap += 2;
88 if (y < height) {
89 if (x < width) {
90 if (x + runlen > width)
91 cnt = width - x;
92 else
93 cnt = runlen;
94 draw_unencoded_bitmap(
95 (ushort **)&fb,
96 bmap, cmap, cnt);
97 }
98 x += runlen;
99 }
100 bmap += runlen;
101 if (runlen & 1)
102 bmap++;
103 }
104 } else {
105
106 if (y < height) {
107 runlen = bmap[0];
108 if (x < width) {
109
110 while (bmap[0] == 0xff &&
111 bmap[2] != BMP_RLE8_ESCAPE &&
112 bmap[1] == bmap[3]) {
113 runlen += bmap[2];
114 bmap += 2;
115 }
116 if (x + runlen > width)
117 cnt = width - x;
118 else
119 cnt = runlen;
120 draw_encoded_bitmap((ushort **)&fb,
121 cmap[bmap[1]], cnt);
122 }
123 x += runlen;
124 }
125 bmap += 2;
126 }
127 }
128}
129#endif
130
131__weak void fb_put_byte(uchar **fb, uchar **from)
132{
133 *(*fb)++ = *(*from)++;
134}
135
136#if defined(CONFIG_BMP_16BPP)
137__weak void fb_put_word(uchar **fb, uchar **from)
138{
139 *(*fb)++ = *(*from)++;
140 *(*fb)++ = *(*from)++;
141}
142#endif
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156
157static void video_splash_align_axis(int *axis, unsigned long panel_size,
158 unsigned long picture_size)
159{
160 unsigned long panel_picture_delta = panel_size - picture_size;
161 unsigned long axis_alignment;
162
163 if (*axis == BMP_ALIGN_CENTER)
164 axis_alignment = panel_picture_delta / 2;
165 else if (*axis < 0)
166 axis_alignment = panel_picture_delta + *axis + 1;
167 else
168 return;
169
170 *axis = max(0, (int)axis_alignment);
171}
172
173static void video_set_cmap(struct udevice *dev,
174 struct bmp_color_table_entry *cte, unsigned colours)
175{
176 struct video_priv *priv = dev_get_uclass_priv(dev);
177 int i;
178 ushort *cmap = priv->cmap;
179
180 debug("%s: colours=%d\n", __func__, colours);
181 for (i = 0; i < colours; ++i) {
182 *cmap = ((cte->red << 8) & 0xf800) |
183 ((cte->green << 3) & 0x07e0) |
184 ((cte->blue >> 3) & 0x001f);
185 cmap++;
186 cte++;
187 }
188}
189
190int video_bmp_display(struct udevice *dev, ulong bmp_image, int x, int y,
191 bool align)
192{
193 struct video_priv *priv = dev_get_uclass_priv(dev);
194 ushort *cmap_base = NULL;
195 int i, j;
196 uchar *fb;
197 struct bmp_image *bmp = map_sysmem(bmp_image, 0);
198 uchar *bmap;
199 ushort padded_width;
200 unsigned long width, height, byte_width;
201 unsigned long pwidth = priv->xsize;
202 unsigned colours, bpix, bmp_bpix;
203 struct bmp_color_table_entry *palette;
204 int hdr_size;
205
206 if (!bmp || !(bmp->header.signature[0] == 'B' &&
207 bmp->header.signature[1] == 'M')) {
208 printf("Error: no valid bmp image at %lx\n", bmp_image);
209
210 return -EINVAL;
211 }
212
213 width = get_unaligned_le32(&bmp->header.width);
214 height = get_unaligned_le32(&bmp->header.height);
215 bmp_bpix = get_unaligned_le16(&bmp->header.bit_count);
216 hdr_size = get_unaligned_le16(&bmp->header.size);
217 debug("hdr_size=%d, bmp_bpix=%d\n", hdr_size, bmp_bpix);
218 palette = (void *)bmp + 14 + hdr_size;
219
220 colours = 1 << bmp_bpix;
221
222 bpix = VNBITS(priv->bpix);
223
224 if (bpix != 1 && bpix != 8 && bpix != 16 && bpix != 32) {
225 printf("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
226 bpix, bmp_bpix);
227
228 return -EINVAL;
229 }
230
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232
233
234
235 if (bpix != bmp_bpix &&
236 !(bmp_bpix == 8 && bpix == 16) &&
237 !(bmp_bpix == 24 && bpix == 32)) {
238 printf("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
239 bpix, get_unaligned_le16(&bmp->header.bit_count));
240 return -EPERM;
241 }
242
243 debug("Display-bmp: %d x %d with %d colours, display %d\n",
244 (int)width, (int)height, (int)colours, 1 << bpix);
245
246 if (bmp_bpix == 8)
247 video_set_cmap(dev, palette, colours);
248
249 padded_width = (width & 0x3 ? (width & ~0x3) + 4 : width);
250
251 if (align) {
252 video_splash_align_axis(&x, priv->xsize, width);
253 video_splash_align_axis(&y, priv->ysize, height);
254 }
255
256 if ((x + width) > pwidth)
257 width = pwidth - x;
258 if ((y + height) > priv->ysize)
259 height = priv->ysize - y;
260
261 bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
262 fb = (uchar *)(priv->fb +
263 (y + height - 1) * priv->line_length + x * bpix / 8);
264
265 switch (bmp_bpix) {
266 case 1:
267 case 8: {
268 cmap_base = priv->cmap;
269#ifdef CONFIG_VIDEO_BMP_RLE8
270 u32 compression = get_unaligned_le32(&bmp->header.compression);
271 debug("compressed %d %d\n", compression, BMP_BI_RLE8);
272 if (compression == BMP_BI_RLE8) {
273 if (bpix != 16) {
274
275 printf("Error: only support 16 bpix");
276 return -EPROTONOSUPPORT;
277 }
278 video_display_rle8_bitmap(dev, bmp, cmap_base, fb, x,
279 y);
280 break;
281 }
282#endif
283
284 if (bpix != 16)
285 byte_width = width;
286 else
287 byte_width = width * 2;
288
289 for (i = 0; i < height; ++i) {
290 WATCHDOG_RESET();
291 for (j = 0; j < width; j++) {
292 if (bpix != 16) {
293 fb_put_byte(&fb, &bmap);
294 } else {
295 *(uint16_t *)fb = cmap_base[*bmap];
296 bmap++;
297 fb += sizeof(uint16_t) / sizeof(*fb);
298 }
299 }
300 bmap += (padded_width - width);
301 fb -= byte_width + priv->line_length;
302 }
303 break;
304 }
305#if defined(CONFIG_BMP_16BPP)
306 case 16:
307 for (i = 0; i < height; ++i) {
308 WATCHDOG_RESET();
309 for (j = 0; j < width; j++)
310 fb_put_word(&fb, &bmap);
311
312 bmap += (padded_width - width) * 2;
313 fb -= width * 2 + priv->line_length;
314 }
315 break;
316#endif
317#if defined(CONFIG_BMP_24BPP)
318 case 24:
319 for (i = 0; i < height; ++i) {
320 for (j = 0; j < width; j++) {
321 *(fb++) = *(bmap++);
322 *(fb++) = *(bmap++);
323 *(fb++) = *(bmap++);
324 *(fb++) = 0;
325 }
326 fb -= priv->line_length + width * (bpix / 8);
327 }
328 break;
329#endif
330#if defined(CONFIG_BMP_32BPP)
331 case 32:
332 for (i = 0; i < height; ++i) {
333 for (j = 0; j < width; j++) {
334 *(fb++) = *(bmap++);
335 *(fb++) = *(bmap++);
336 *(fb++) = *(bmap++);
337 *(fb++) = *(bmap++);
338 }
339 fb -= priv->line_length + width * (bpix / 8);
340 }
341 break;
342#endif
343 default:
344 break;
345 };
346
347 video_sync(dev, false);
348
349 return 0;
350}
351
352
