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Root/branches/cparm/i386/modules/GUI/graphic_utils.c

1␊
2/* Graphic utility functions and data types␊
3 * Prashant Vaibhav (C) 12/12/2008␊
4 * Chameleon␊
5 */␊
6#include "boot.h"␊
7#include "graphic_utils.h"␊
8#include "graphics.h"␊
9#include "vbe.h"␊
10#include "gui.h"␊
11␊
12#define VIDEO(x) (bootArgs->Video.v_ ## x)␊
13␊
14#define MIN(x, y) ((x) < (y) ? (x) : (y))␊
15␊
16␊
17␊
18#ifdef OPTION_ROM␊
19int␊
20convertImage( unsigned short width,␊
21␉␉␉ unsigned short height,␊
22␉␉␉ const unsigned char *imageData,␊
23␉␉␉ unsigned char **newImageData )␊
24{␊
25 int cnt;␊
26 unsigned char *img = 0;␊
27 unsigned short *img16;␊
28 unsigned long *img32;␊
29␉␊
30 switch ( VIDEO(depth) ) {␊
31␉␉case 16 :␊
32␉␉␉img16 = malloc(width * height * 2);␊
33␉␉␉if ( !img16 ) break;␊
34␉␉␉for (cnt = 0; cnt < (width * height); cnt++)␊
35␉␉␉␉img16[cnt] = lookUpCLUTIndex(imageData[cnt], 16);␊
36␉␉␉img = (unsigned char *)img16;␊
37␉␉␉break;␊
38␉␉␉␊
39␉␉case 32 :␊
40␉␉␉img32 = malloc(width * height * 4);␊
41␉␉␉if ( !img32 ) break;␊
42␉␉␉for (cnt = 0; cnt < (width * height); cnt++)␊
43␉␉␉␉img32[cnt] = lookUpCLUTIndex(imageData[cnt], 32);␊
44␉␉␉img = (unsigned char *)img32;␊
45␉␉␉break;␊
46␉␉␉␊
47␉␉default :␊
48␉␉␉img = malloc(width * height);␊
49␉␉␉bcopy(imageData, img, width * height);␊
50␉␉␉break;␊
51 }␊
52 *newImageData = img;␊
53 return 0;␊
54}␊
55␊
56//==========================================================================␊
57// drawDataRectangle␊
58␊
59void drawDataRectangle( unsigned short x,␊
60␉␉␉␉␉ unsigned short y,␊
61␉␉␉␉␉ unsigned short width,␊
62␉␉␉␉␉ unsigned short height,␊
63␉␉␉␉␉ unsigned char * data )␊
64{␊
65 unsigned short drawWidth;␊
66 long pixelBytes = VIDEO(depth) / 8;␊
67 unsigned char * vram = (unsigned char *) VIDEO(baseAddr) +␊
68␉VIDEO(rowBytes) * y + pixelBytes * x;␊
69␉␊
70 drawWidth = MIN(width, VIDEO(width) - x);␊
71 height = MIN(height, VIDEO(height) - y);␊
72 while ( height-- ) {␊
73 bcopy( data, vram, drawWidth * pixelBytes );␊
74 vram += VIDEO(rowBytes);␊
75 data += width * pixelBytes;␊
76 }␊
77}␊
78#endif␊
79␊
80␊
81//==========================================================================␊
82//␊
83void ␊
84printVBEModeInfo()␊
85{␊
86 VBEInfoBlock vbeInfo;␊
87 unsigned short * modePtr;␊
88 VBEModeInfoBlock modeInfo;␊
89 int err;␊
90 int line;␊
91␉␊
92 ␉bzero( &vbeInfo, sizeof(vbeInfo) );␊
93 strcpy( (char*)&vbeInfo, "VBE2" );␊
94 err = getVBEInfo( &vbeInfo );␊
95 if ( err != errSuccess )␊
96 return;␊
97␉␊
98 line = 0;␊
99␉␊
100 // Activate and clear page 1␊
101 setActiveDisplayPage(1);␊
102 clearScreenRows(0, 24);␊
103 setCursorPosition( 0, 0, 1 );␊
104␉␊
105␉printf("Video modes supported:\n", VBEDecodeFP(const char *, vbeInfo.OEMStringPtr));␊
106␉␊
107␉// Loop through the mode list, and find the matching mode.␊
108␉␊
109 for ( modePtr = VBEDecodeFP( unsigned short *, vbeInfo.VideoModePtr );␊
110␉␉ *modePtr != modeEndOfList; modePtr++ )␊
111 {␊
112 // Get mode information.␊
113␉␉␊
114 bzero( &modeInfo, sizeof(modeInfo) );␊
115 err = getVBEModeInfo( *modePtr, &modeInfo );␊
116 if ( err != errSuccess )␊
117 {␊
118 continue;␊
119 }␊
120␉␉␊
121 printf("Mode %x: %dx%dx%d mm:%d attr:%x\n",␊
122 *modePtr, modeInfo.XResolution, modeInfo.YResolution,␊
123 modeInfo.BitsPerPixel, modeInfo.MemoryModel,␊
124 modeInfo.ModeAttributes);␊
125␉␉␊
126 if (line++ >= 20) {␊
127 pause();␊
128 line = 0;␊
129 clearScreenRows(0, 24);␊
130 setCursorPosition( 0, 0, 1 );␊
131 }␊
132 } ␊
133 if (line != 0) {␊
134 pause();␊
135 }␊
136 setActiveDisplayPage(0);␊
137}␊
138␊
139␊
140␊
141char *getVBEModeInfoString()␊
142{␊
143␉VBEInfoBlock vbeInfo;␊
144 unsigned short * modePtr;␊
145 VBEModeInfoBlock modeInfo;␊
146 int err;␊
147␉␊
148 ␉bzero( &vbeInfo, sizeof(vbeInfo) );␊
149 strcpy( (char*)&vbeInfo, "VBE2" );␊
150 err = getVBEInfo( &vbeInfo );␊
151 if ( err != errSuccess )␊
152 return 0;␊
153␉␊
154␉char *buff=malloc(sizeof(char)*3072);␊
155␉if(!buff) return 0;␊
156␉␊
157␉// Loop through the mode list, and find the matching mode.␊
158 for ( modePtr = VBEDecodeFP( unsigned short *, vbeInfo.VideoModePtr );␊
159␉␉ *modePtr != modeEndOfList; modePtr++ )␊
160 {␊
161 // Get mode information.␊
162␉␉␊
163 bzero( &modeInfo, sizeof(modeInfo) );␊
164 err = getVBEModeInfo( *modePtr, &modeInfo );␊
165 if ( err != errSuccess )␊
166 {␊
167 continue;␊
168 }␊
169␉␉␊
170 sprintf(buff+strlen(buff), "Mode %x: %dx%dx%d mm:%d attr:%x\n",␊
171␉␉␉␉*modePtr, modeInfo.XResolution, modeInfo.YResolution,␊
172␉␉␉␉modeInfo.BitsPerPixel, modeInfo.MemoryModel,␊
173␉␉␉␉modeInfo.ModeAttributes);␊
174␉␉␊
175 } ␊
176␉return buff;␊
177}␊
178␊
179␊
180void blendImage(uint16_t x, uint16_t y, uint16_t width, uint16_t height,␊
181␉␉␉␉uint8_t *data)␊
182{␊
183 uint16_t drawWidth;␊
184 uint8_t *vram = (uint8_t *) VIDEO(baseAddr) + VIDEO(rowBytes) * y + 4 * x;␊
185␉␊
186 drawWidth = MIN(width, VIDEO(width) - x);␊
187 height = MIN(height, VIDEO(height) - y);␊
188 while (height--) {␊
189␉␉switch (VIDEO (depth))␊
190␉␉{␊
191␉␉␉case 32: /* Optimized version*/␊
192␉␉␉{␊
193␉␉␉␉uint32_t s; uint32_t* d; // Source (img) and destination (bkgd) pixels␊
194␉␉␉␉uint32_t a; // Alpha␊
195␉␉␉␉uint32_t dstrb, dstg, srcrb, srcg, drb, dg, rb, g, tempB; // Intermediate variables␊
196␉␉␉␉uint16_t pos;␊
197␉␉␉␉␊
198␉␉␉␉for (pos = 0; pos < drawWidth * 4; pos += 4) {␊
199␉␉␉␉␉// Fast pseudo-vector alpha blending, adapted from: http://www.stereopsis.com/doubleblend.html␊
200␉␉␉␉␉s = *((uint32_t*) (data + pos));␊
201␉␉␉␉␉d = (uint32_t*) (vram + pos);␊
202␉␉␉␉␉␊
203␉␉␉␉␉// Flip B and R in source␊
204␉␉␉␉␉// TODO: use XCHG and inline assembly to do this in a faster, saner way␊
205␉␉␉␉␉tempB = (s & 0xFF0000); // save B␊
206␉␉␉␉␉s = (s & 0xFF00FFFF) | ((s & 0xFF) << 16); // put R in B␊
207␉␉␉␉␉s = (s & 0xFFFFFF00) | (tempB >> 16); // put B in R␊
208␉␉␉␉␉␊
209␉␉␉␉␉a = (s >> 24) + 1;␊
210␉␉␉␉␉␊
211␉␉␉␉␉dstrb = *d & 0xFF00FF; dstg = *d & 0xFF00;␊
212␉␉␉␉␉srcrb = s & 0xFF00FF; srcg = s & 0xFF00;␊
213␉␉␉␉␉␊
214␉␉␉␉␉drb = srcrb - dstrb;␊
215␉␉␉␉␉dg = srcg - dstg;␊
216␉␉␉␉␉drb *= a; dg *= a;␊
217␉␉␉␉␉drb >>= 8; dg >>= 8;␊
218␉␉␉␉␉␊
219␉␉␉␉␉rb = (drb + dstrb) & 0xFF00FF;␊
220␉␉␉␉␉g = (dg + dstg) & 0xFF00;␊
221␉␉␉␉␉␊
222␉␉␉␉␉*d = rb | g;␊
223␉␉␉␉}␊
224␉␉␉}␊
225␉␉␉␉break;␊
226␉␉␉␉␊
227␉␉␉default: /*Universal version*/␊
228␉␉␉{␊
229␉␉␉␉uint32_t s; ␊
230␉␉␉␉uint32_t a; // Alpha␊
231␉␉␉␉uint32_t dr, dg, db, sr, sg, sb; // Intermediate variables␊
232␉␉␉␉uint16_t pos;␊
233␉␉␉␉int bpp = (VIDEO (depth) + 7)/8;␊
234␉␉␉␉␊
235␉␉␉␉for (pos = 0; pos < drawWidth; pos ++) {␊
236␉␉␉␉␉// Fast pseudo-vector alpha blending, adapted from: http://www.stereopsis.com/doubleblend.html␊
237␉␉␉␉␉s = *((uint32_t*) (data + 4*pos));␊
238␉␉␉␉␉␊
239␉␉␉␉␉sb = (s & 0xFF0000) >> 16;␊
240␉␉␉␉␉sg = (s & 0xFF00) >> 8;␊
241␉␉␉␉␉sr = (s & 0xFF);␊
242␉␉␉␉␉␊
243␉␉␉␉␉a = (s >> 24) + 1;␊
244␉␉␉␉␉␊
245␉␉␉␉␉switch (VIDEO (depth))␊
246␉␉␉␉␉{␊
247␉␉␉␉␉␉case 24:␊
248␉␉␉␉␉␉␉db = ((*(uint32_t *)(vram + bpp*pos))&0xff);␊
249␉␉␉␉␉␉␉dg = ((*(uint32_t *)(vram + bpp*pos))&0xff00)>>8;␊
250␉␉␉␉␉␉␉dr = ((*(uint32_t *)(vram + bpp*pos))&0xff0000)>>16;␊
251␉␉␉␉␉␉␉break;␊
252␉␉␉␉␉␉case 16://16-bit seems to be 15-bit␊
253␉␉␉␉␉␉␉/*␉␉␉␉␉␉␉db = ((*(uint16_t *)(vram + bpp*pos))&0x1f)<<3;␊
254␉␉␉␉␉␉␉ dg = ((*(uint16_t *)(vram + bpp*pos))&0x07e0)>>3;␊
255␉␉␉␉␉␉␉ dr = ((*(uint16_t *)(vram + bpp*pos))&0xf800)>>8;␊
256␉␉␉␉␉␉␉ break;␉␉␉␉␉␉␉*/␊
257␉␉␉␉␉␉case 15:␊
258␉␉␉␉␉␉␉db = ((*(uint16_t *)(vram + bpp*pos))&0x1f)<<3;␊
259␉␉␉␉␉␉␉dg = ((*(uint16_t *)(vram + bpp*pos))&0x03e0)>>2;␊
260␉␉␉␉␉␉␉dr = ((*(uint16_t *)(vram + bpp*pos))&0x7c00)>>7;␊
261␉␉␉␉␉␉␉break;␉␉␊
262␉␉␉␉␉␉default:␊
263␉␉␉␉␉␉␉return;␊
264␉␉␉␉␉}␊
265␉␉␉␉␉␊
266␉␉␉␉␉dr = (((sr - dr) * a) >> 8) + dr;␊
267␉␉␉␉␉dg = (((sg - dg) * a) >> 8) + dg;␊
268␉␉␉␉␉db = (((sb - db) * a) >> 8) + db;␊
269␉␉␉␉␉switch (VIDEO (depth))␊
270␉␉␉␉␉{␊
271␉␉␉␉␉␉case 24:␊
272␉␉␉␉␉␉␉*(uint32_t *)(vram + bpp*pos) = (*(uint32_t *)(vram + bpp*pos) &0xff000000)␊
273␉␉␉␉␉␉␉| (db&0xff) | ((dg&0xff)<<8) | ((dr&0xff)<<16);␊
274␉␉␉␉␉␉␉break;␊
275␉␉␉␉␉␉case 16:␊
276␉␉␉␉␉␉␉//␉␉␉␉␉␉␉*(uint16_t *)(vram + bpp*pos) = ((db&0xf8)>>3) | ((dg&0xfc)<<3) | ((dr&0xf8)<<8);␊
277␉␉␉␉␉␉␉//␉␉␉␉␉␉␉break;␉␉␉␉␉␉␉␊
278␉␉␉␉␉␉case 15:␊
279␉␉␉␉␉␉␉*(uint16_t *)(vram + bpp*pos) = ((db&0xf8)>>3) | ((dg&0xf8)<<2) | ((dr&0xf8)<<7);␊
280␉␉␉␉␉␉␉break;␉␉␉␉␉␉␉␉␉␉␉␉␉␉␊
281␉␉␉␉␉}␊
282␉␉␉␉␉␊
283␉␉␉␉}␉␉␉␉␊
284␉␉␉}␊
285␉␉␉␉break;␊
286 }␊
287 vram += VIDEO(rowBytes);␊
288 data += width * 4;␊
289 }␊
290}␊
291␊
292void drawCheckerBoard()␊
293{␊
294 uint32_t *vram = (uint32_t *) VIDEO(baseAddr);␊
295 uint16_t x, y;␊
296 uint8_t color;␊
297␉␊
298 for (y = 0; y < VIDEO(height); y++, vram += VIDEO(width)) {␊
299 for (x = 0; x < VIDEO(width); x++) {␊
300 color = 204 + 51 * (((x / 8) % 2) == ((y / 8) % 2));␊
301 vram[x] = (color << 16) | (color << 8) | color;␊
302 }␊
303 }␊
304}␊
305␊
306void getGraphicModeParams(unsigned long params[]) {␊
307␉␊
308␉params[3] = 0;␊
309␉␊
310␉VBEModeInfoBlock minfo;␊
311␉␊
312 unsigned short vesaVersion;␊
313 unsigned short mode = modeEndOfList;␊
314␉␊
315␉getNumberArrayFromProperty( kGraphicsModeKey, params, 4);␊
316␉␊
317␉mode = getVESAModeWithProperties( params[0], params[1], params[2],␊
318␉␉␉␉␉␉␉␉␉ maColorModeBit |␊
319␉␉␉␉␉␉␉␉␉ maModeIsSupportedBit |␊
320␉␉␉␉␉␉␉␉␉ maGraphicsModeBit |␊
321␉␉␉␉␉␉␉␉␉ maLinearFrameBufferAvailBit,␊
322␉␉␉␉␉␉␉␉␉ 0,␊
323␉␉␉␉␉␉␉␉␉ &minfo, &vesaVersion );␊
324␉␊
325␉params[0] = minfo.XResolution;␊
326␉params[1] = minfo.YResolution;␊
327␉params[2] = 32;␊
328}␊
329␊
330␊
331//==========================================================================␊
332// getVBEInfoString␊
333␊
334char *getVBEInfoString()␊
335{␊
336␉VBEInfoBlock vbeInfo;␊
337␉int err, small;␊
338␉char *buff = malloc(sizeof(char)*256);␊
339␉if(!buff) return 0;␊
340␉␊
341␉bzero( &vbeInfo, sizeof(vbeInfo) );␊
342␉strcpy( (char*)&vbeInfo, "VBE2" );␊
343␉err = getVBEInfo( &vbeInfo );␊
344␉if (err != errSuccess)␊
345␉␉return 0;␊
346␉␊
347␉if ( strncmp( (char *)vbeInfo.VESASignature, "VESA", 4 ) )␊
348␉␉return 0;␊
349␉␊
350␉small = (vbeInfo.TotalMemory < 16);␊
351␉␊
352␉sprintf(buff, "VESA v%d.%d %d%s (%s)\n",␊
353␉␉␉vbeInfo.VESAVersion >> 8,␊
354␉␉␉vbeInfo.VESAVersion & 0xf,␊
355␉␉␉small ? (vbeInfo.TotalMemory * 64) : (vbeInfo.TotalMemory / 16),␊
356␉␉␉small ? "KB" : "MB",␊
357␉␉␉VBEDecodeFP(const char *, vbeInfo.OEMStringPtr) );␊
358␉␊
359␉return buff;␊
360}␊
361␊
362void blend( const pixmap_t *blendThis, // Source image␊
363␉␉ pixmap_t *blendInto, // Dest image␊
364␉␉ const position_t position) // Where to place the source image␊
365{␊
366 uint16_t sx, sy, dx, dy;␊
367 uint32_t dstrb, dstag, srcrb, srcag, drb, dag, rb, ag, alpha;␊
368␉␊
369␉uint16_t width = (blendThis->width + position.x < blendInto->width) ? blendThis->width: blendInto->width-position.x;␊
370␉uint16_t height = (blendThis->height + position.y < blendInto->height) ? blendThis->height: blendInto->height-position.y;␊
371␉␊
372␉for (dy = position.y, sy = 0; sy < height; dy++, sy++) ␊
373␉{␊
374 for (dx = position.x, sx = 0; sx < width; dx++, sx++) ␊
375␉␉{␊
376 alpha = (pixel(blendThis, sx, sy).ch.a);␊
377␉␉␉␊
378␉␉␉/* Skip blending for fully transparent pixel */␊
379␉␉␉if (alpha == 0) continue;␊
380␉␉␉␊
381␉␉␉/* For fully opaque pixel, there is no need to interpolate */␊
382␉␉␉if (alpha == 255)␊
383␉␉␉{␊
384␉␉␉␉pixel(blendInto, dx, dy).value = pixel(blendThis, sx, sy).value;␊
385␉␉␉␉continue;␊
386␉␉␉}␊
387␉␉␉␊
388␉␉␉/* For semi-transparent pixels, do a full blend */␊
389␉␉␉//alpha++␊
390␉␉␉/* This is needed to spread the alpha over [0..256] instead of [0..255]␊
391␉␉␉ Boundary conditions were handled above */␊
392 dstrb = pixel(blendInto, dx, dy).value & 0xFF00FF;␊
393 dstag = (pixel(blendInto, dx, dy).value >> 8) & 0xFF00FF;␊
394 srcrb = pixel(blendThis, sx, sy).value & 0xFF00FF;␊
395 srcag = (pixel(blendThis, sx, sy).value >> 8) & 0xFF00FF;␊
396 drb = srcrb - dstrb;␊
397 dag = srcag - dstag;␊
398 drb *= alpha; dag *= alpha;␊
399 drb >>= 8; dag >>= 8;␊
400 rb = (drb + dstrb) & 0x00FF00FF;␊
401 ag = ((dag + dstag) << 8) & 0xFF00FF00;␊
402 pixel(blendInto, dx, dy).value = (rb | ag);␊
403 }␊
404 }␊
405}␊
406␊
407position_t centeredIn( const pixmap_t *background, const pixmap_t *toCenter )␊
408{␊
409 position_t centered;␊
410 centered.x = ( background->width - toCenter->width ) / 2;␊
411 centered.y = ( background->height - toCenter->height ) / 2;␊
412 return centered;␊
413}␊
414␊
415position_t centeredAt( const pixmap_t *pixmap, const position_t center )␊
416{␊
417 position_t topleft;␊
418 topleft.x = center.x - (pixmap->width / 2);␊
419 topleft.y = center.y - (pixmap->height / 2);␊
420 return topleft;␊
421}␊
422␊
423position_t pos(const uint16_t x, const uint16_t y) { position_t p; p.x = x; p.y = y; return p; }␊
424␊
425void flipRB(pixmap_t *p)␊
426{␊
427␉//if(testForQemu()) return;␊
428␉␊
429␉uint32_t x;␊
430 register uint8_t tempB;␊
431␉for (x = 0; x < (p->height) * (p->width) ; x++) {␊
432␉␉tempB = (p->pixels[x]).ch.b;␊
433 (p->pixels[x]).ch.b = (p->pixels[x]).ch.r;␊
434 (p->pixels[x]).ch.r = tempB;␊
435␉}␊
436}␊
437

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