summaryrefslogtreecommitdiff
path: root/fb/fboverlay.c
blob: 255cc23c12c87f83e73d5c71a38385f320138a57 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
/*
 *
 * Copyright © 2000 SuSE, Inc.
 *
 * Permission to use, copy, modify, distribute, and sell this software and its
 * documentation for any purpose is hereby granted without fee, provided that
 * the above copyright notice appear in all copies and that both that
 * copyright notice and this permission notice appear in supporting
 * documentation, and that the name of SuSE not be used in advertising or
 * publicity pertaining to distribution of the software without specific,
 * written prior permission.  SuSE makes no representations about the
 * suitability of this software for any purpose.  It is provided "as is"
 * without express or implied warranty.
 *
 * SuSE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SuSE
 * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN 
 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 *
 * Author:  Keith Packard, SuSE, Inc.
 */


#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif

#include <stdlib.h>

#include "fb.h"
#include "fboverlay.h"
#include "shmint.h"

static DevPrivateKeyRec fbOverlayScreenPrivateKeyRec;
#define fbOverlayScreenPrivateKey (&fbOverlayScreenPrivateKeyRec)

DevPrivateKey fbOverlayGetScreenPrivateKey(void)
{
    return fbOverlayScreenPrivateKey;
}

/*
 * Replace this if you want something supporting
 * multiple overlays with the same depth
 */
Bool
fbOverlayCreateWindow(WindowPtr pWin)
{
    FbOverlayScrPrivPtr	pScrPriv = fbOverlayGetScrPriv(pWin->drawable.pScreen);
    int			i;
    PixmapPtr		pPixmap;
    
    if (pWin->drawable.class != InputOutput)
	return TRUE;

    if (pWin->drawable.bitsPerPixel == 32)
	pWin->drawable.bitsPerPixel = fbGetScreenPrivate(pWin->drawable.pScreen)->win32bpp;

    for (i = 0; i < pScrPriv->nlayers; i++)
    {
	pPixmap = pScrPriv->layer[i].u.run.pixmap;
	if (pWin->drawable.depth == pPixmap->drawable.depth)
	{
	    dixSetPrivate(&pWin->devPrivates, fbGetWinPrivateKey(), pPixmap);
	    /*
	     * Make sure layer keys are written correctly by
	     * having non-root layers set to full while the
	     * root layer is set to empty.  This will cause
	     * all of the layers to get painted when the root
	     * is mapped
	     */
	    if (!pWin->parent)
	    {
		RegionEmpty(&pScrPriv->layer[i].u.run.region);
	    }
	    return TRUE;
	}
    }
    return FALSE;
}

Bool
fbOverlayCloseScreen (int iScreen, ScreenPtr pScreen)
{
    FbOverlayScrPrivPtr	pScrPriv = fbOverlayGetScrPriv(pScreen);
    int			i;

    for (i = 0; i < pScrPriv->nlayers; i++)
    {
	(*pScreen->DestroyPixmap)(pScrPriv->layer[i].u.run.pixmap);
	RegionUninit(&pScrPriv->layer[i].u.run.region);
    }
    return TRUE;
}

/*
 * Return layer containing this window
 */
int
fbOverlayWindowLayer(WindowPtr pWin)
{
    FbOverlayScrPrivPtr pScrPriv = fbOverlayGetScrPriv(pWin->drawable.pScreen);
    int                 i;

    for (i = 0; i < pScrPriv->nlayers; i++)
	if (dixLookupPrivate(&pWin->devPrivates, fbGetWinPrivateKey()) ==
	    (pointer) pScrPriv->layer[i].u.run.pixmap)
	    return i;
    return 0;
}

Bool
fbOverlayCreateScreenResources(ScreenPtr pScreen)
{
    int			i;
    FbOverlayScrPrivPtr	pScrPriv = fbOverlayGetScrPriv(pScreen);
    PixmapPtr		pPixmap;
    pointer		pbits;
    int			width;
    int			depth;
    BoxRec		box;
    
    if (!miCreateScreenResources(pScreen))
	return FALSE;

    box.x1 = 0;
    box.y1 = 0;
    box.x2 = pScreen->width;
    box.y2 = pScreen->height;
    for (i = 0; i < pScrPriv->nlayers; i++)
    {
	pbits = pScrPriv->layer[i].u.init.pbits;
	width = pScrPriv->layer[i].u.init.width;
	depth = pScrPriv->layer[i].u.init.depth;
	pPixmap = (*pScreen->CreatePixmap)(pScreen, 0, 0, depth, 0);
	if (!pPixmap)
	    return FALSE;
	if (!(*pScreen->ModifyPixmapHeader)(pPixmap, pScreen->width,
					    pScreen->height, depth,
					    BitsPerPixel(depth),
					    PixmapBytePad(width, depth),
					    pbits))
	    return FALSE;
	pScrPriv->layer[i].u.run.pixmap = pPixmap;
	RegionInit(&pScrPriv->layer[i].u.run.region, &box, 0);
    }
    pScreen->devPrivate = pScrPriv->layer[0].u.run.pixmap;
    return TRUE;
}

void
fbOverlayPaintKey (DrawablePtr	pDrawable,
		   RegionPtr	pRegion,
		   CARD32	pixel,
		   int		layer)
{
    fbFillRegionSolid (pDrawable, pRegion, 0, 
		       fbReplicatePixel (pixel, pDrawable->bitsPerPixel));
}

/*
 * Track visible region for each layer
 */
void
fbOverlayUpdateLayerRegion (ScreenPtr	pScreen,
			    int		layer,
			    RegionPtr	prgn)
{
    FbOverlayScrPrivPtr pScrPriv = fbOverlayGetScrPriv(pScreen);
    int			i;
    RegionRec		rgnNew;
    
    if (!prgn || !RegionNotEmpty(prgn))
	return;
    for (i = 0; i < pScrPriv->nlayers; i++)
    {
	if (i == layer)
	{
	    /* add new piece to this fb */
	    RegionUnion(&pScrPriv->layer[i].u.run.region,
			&pScrPriv->layer[i].u.run.region,
			prgn);
	}
	else if (RegionNotEmpty(&pScrPriv->layer[i].u.run.region))
	{
	    /* paint new piece with chroma key */
	    RegionNull(&rgnNew);
	    RegionIntersect(&rgnNew, prgn,
			    &pScrPriv->layer[i].u.run.region);
	    (*pScrPriv->PaintKey) (&pScrPriv->layer[i].u.run.pixmap->drawable,
				   &rgnNew,
				   pScrPriv->layer[i].key,
				   i);
	    RegionUninit(&rgnNew);
	    /* remove piece from other fbs */
	    RegionSubtract(&pScrPriv->layer[i].u.run.region,
			   &pScrPriv->layer[i].u.run.region,
			   prgn);
	}
    }
}

/*
 * Copy only areas in each layer containing real bits
 */
void
fbOverlayCopyWindow(WindowPtr	pWin,
		    DDXPointRec	ptOldOrg,
		    RegionPtr	prgnSrc)
{
    ScreenPtr		pScreen = pWin->drawable.pScreen;
    FbOverlayScrPrivPtr	pScrPriv = fbOverlayGetScrPriv(pScreen);
    RegionRec		rgnDst;
    int			dx, dy;
    int			i;
    RegionRec		layerRgn[FB_OVERLAY_MAX];
    PixmapPtr		pPixmap;

    dx = ptOldOrg.x - pWin->drawable.x;
    dy = ptOldOrg.y - pWin->drawable.y;

    /*
     * Clip to existing bits
     */
    RegionTranslate(prgnSrc, -dx, -dy);
    RegionNull(&rgnDst);
    RegionIntersect(&rgnDst, &pWin->borderClip, prgnSrc);
    RegionTranslate(&rgnDst, dx, dy);
    /*
     * Compute the portion of each fb affected by this copy
     */
    for (i = 0; i < pScrPriv->nlayers; i++)
    {
	RegionNull(&layerRgn[i]);
	RegionIntersect(&layerRgn[i], &rgnDst,
			 &pScrPriv->layer[i].u.run.region);
	if (RegionNotEmpty(&layerRgn[i]))
	{
	    RegionTranslate(&layerRgn[i], -dx, -dy);
	    pPixmap = pScrPriv->layer[i].u.run.pixmap;
	    miCopyRegion (&pPixmap->drawable, &pPixmap->drawable,
			  0,
			  &layerRgn[i], dx, dy, pScrPriv->CopyWindow, 0,
			  (void *)(long) i);
	}
    }
    /*
     * Update regions
     */
    for (i = 0; i < pScrPriv->nlayers; i++)
    {
	if (RegionNotEmpty(&layerRgn[i]))
	    fbOverlayUpdateLayerRegion (pScreen, i, &layerRgn[i]);

	RegionUninit(&layerRgn[i]);
    }
    RegionUninit(&rgnDst);
}   

void
fbOverlayWindowExposures (WindowPtr	pWin,
			  RegionPtr	prgn,
			  RegionPtr	other_exposed)
{
    fbOverlayUpdateLayerRegion (pWin->drawable.pScreen,
				fbOverlayWindowLayer (pWin),
				prgn);
    miWindowExposures(pWin, prgn, other_exposed);
}

Bool
fbOverlaySetupScreen(ScreenPtr	pScreen,
		     pointer	pbits1,
		     pointer	pbits2,
		     int	xsize,
		     int	ysize,
		     int	dpix,
		     int	dpiy,
		     int	width1,
		     int	width2,
		     int	bpp1,
		     int	bpp2)
{
    return fbSetupScreen (pScreen,
			  pbits1,
			  xsize,
			  ysize,
			  dpix,
			  dpiy,
			  width1,
			  bpp1);
}

static Bool
fb24_32OverlayCreateScreenResources(ScreenPtr pScreen)
{
    FbOverlayScrPrivPtr	pScrPriv = fbOverlayGetScrPriv(pScreen);
    int pitch;
    Bool retval;
    int i;

    if((retval = fbOverlayCreateScreenResources(pScreen))) {
	for (i = 0; i < pScrPriv->nlayers; i++)
	{
	    /* fix the screen pixmap */
	    PixmapPtr pPix = (PixmapPtr) pScrPriv->layer[i].u.run.pixmap;
	    if (pPix->drawable.bitsPerPixel == 32) {
		pPix->drawable.bitsPerPixel = 24;
		pitch = BitmapBytePad(pPix->drawable.width * 24);
		pPix->devKind = pitch;
	    }
	}
    }

    return retval;
}

Bool
fbOverlayFinishScreenInit(ScreenPtr	pScreen,
			  pointer	pbits1,
			  pointer	pbits2,
			  int		xsize,
			  int		ysize,
			  int		dpix,
			  int		dpiy,
			  int		width1,
			  int		width2,
			  int		bpp1,
			  int		bpp2,
			  int		depth1,
			  int		depth2)
{
    VisualPtr	visuals;
    DepthPtr	depths;
    int		nvisuals;
    int		ndepths;
    int		bpp = 0, imagebpp = 32;
    VisualID	defaultVisual;
    FbOverlayScrPrivPtr	pScrPriv;

    if (!dixRegisterPrivateKey(&fbOverlayScreenPrivateKeyRec, PRIVATE_SCREEN, 0))
	return FALSE;

    pScrPriv = malloc(sizeof (FbOverlayScrPrivRec));
    if (!pScrPriv)
	return FALSE;
 
    if (bpp1 == 32 || bpp2 == 32)
	bpp = 32;
    else if (bpp1 == 24 || bpp2 == 24)
	bpp = 24;

    if (bpp == 24)
    {
	int	f;
	
	imagebpp = 32;
	/*
	 * Check to see if we're advertising a 24bpp image format,
	 * in which case windows will use it in preference to a 32 bit
	 * format.
	 */
	for (f = 0; f < screenInfo.numPixmapFormats; f++)
	{
	    if (screenInfo.formats[f].bitsPerPixel == 24)
	    {
		imagebpp = 24;
		break;
	    }
	}	    
    }
    if (imagebpp == 32)
    {
	fbGetScreenPrivate(pScreen)->win32bpp = bpp;
	fbGetScreenPrivate(pScreen)->pix32bpp = bpp;
    }
    else
    {
	fbGetScreenPrivate(pScreen)->win32bpp = 32;
	fbGetScreenPrivate(pScreen)->pix32bpp = 32;
    }
   
    if (!fbInitVisuals (&visuals, &depths, &nvisuals, &ndepths, &depth1,
			&defaultVisual, ((unsigned long)1<<(bpp1-1)) |
			((unsigned long)1<<(bpp2-1)), 8)) {
	free(pScrPriv);
	return FALSE;
    }
    if (! miScreenInit(pScreen, 0, xsize, ysize, dpix, dpiy, 0,
			depth1, ndepths, depths,
			defaultVisual, nvisuals, visuals)) {
	free(pScrPriv);
	return FALSE;
    }
    /* MI thinks there's no frame buffer */
#ifdef MITSHM
    ShmRegisterFbFuncs(pScreen);
#endif
    pScreen->minInstalledCmaps = 1;
    pScreen->maxInstalledCmaps = 2;
    
    pScrPriv->nlayers = 2;
    pScrPriv->PaintKey = fbOverlayPaintKey;
    pScrPriv->CopyWindow = fbCopyWindowProc;
    pScrPriv->layer[0].u.init.pbits = pbits1;
    pScrPriv->layer[0].u.init.width = width1;
    pScrPriv->layer[0].u.init.depth = depth1;

    pScrPriv->layer[1].u.init.pbits = pbits2;
    pScrPriv->layer[1].u.init.width = width2;
    pScrPriv->layer[1].u.init.depth = depth2;
    dixSetPrivate(&pScreen->devPrivates, fbOverlayScreenPrivateKey, pScrPriv);
    
    /* overwrite miCloseScreen with our own */
    pScreen->CloseScreen = fbOverlayCloseScreen;
    pScreen->CreateScreenResources = fbOverlayCreateScreenResources;
    pScreen->CreateWindow = fbOverlayCreateWindow;
    pScreen->WindowExposures = fbOverlayWindowExposures;
    pScreen->CopyWindow = fbOverlayCopyWindow;
    if (bpp == 24 && imagebpp == 32)
    {
	pScreen->ModifyPixmapHeader = fb24_32ModifyPixmapHeader;
  	pScreen->CreateScreenResources = fb24_32OverlayCreateScreenResources;
    }

    return TRUE;
}