xf86VidMode.c revision 6747b715 
1/*
2 * Copyright (c) 1999-2003 by The XFree86 Project, Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Except as contained in this notice, the name of the copyright holder(s)
23 * and author(s) shall not be used in advertising or otherwise to promote
24 * the sale, use or other dealings in this Software without prior written
25 * authorization from the copyright holder(s) and author(s).
26 */
27
28/*
29 * This file contains the VidMode functions required by the extension.
30 * These have been added to avoid the need for the higher level extension
31 * code to access the private XFree86 data structures directly. Wherever
32 * possible this code uses the functions in xf86Mode.c to do the work,
33 * so that two version of code that do similar things don't have to be
34 * maintained.
35 */
36
37#ifdef HAVE_XORG_CONFIG_H
38#include <xorg-config.h>
39#endif
40
41#include <X11/X.h>
42#include "os.h"
43#include "xf86.h"
44#include "xf86Priv.h"
45
46#ifdef XF86VIDMODE
47#include "vidmodeproc.h"
48#include "xf86cmap.h"
49
50static DevPrivateKeyRec VidModeKeyRec;
51static DevPrivateKey VidModeKey;
52static int VidModeCount = 0;
53static Bool VidModeClose(int i, ScreenPtr pScreen);
54
55#define VMPTR(p) ((VidModePtr)dixLookupPrivate(&(p)->devPrivates, VidModeKey))
56
57#endif
58
59Bool
60VidModeExtensionInit(ScreenPtr pScreen)
61{
62#ifdef XF86VIDMODE
63    VidModePtr pVidMode;
64
65    if (!xf86GetVidModeEnabled()) {
66	DebugF("!xf86GetVidModeEnabled()\n");
67	return FALSE;
68    }
69
70    VidModeKey = &VidModeKeyRec;
71
72    if (!dixRegisterPrivateKey(&VidModeKeyRec, PRIVATE_SCREEN, 0))
73	return FALSE;
74
75    pVidMode = calloc(sizeof(VidModeRec), 1);
76    if (!pVidMode)
77	return FALSE;
78
79    dixSetPrivate(&pScreen->devPrivates, VidModeKey, pVidMode);
80
81    pVidMode->Flags = 0;
82    pVidMode->Next = NULL;
83    pVidMode->CloseScreen = pScreen->CloseScreen;
84    pScreen->CloseScreen = VidModeClose;
85    VidModeCount++;
86    return TRUE;
87#else
88    DebugF("no vidmode extension\n");
89    return FALSE;
90#endif
91}
92
93
94#ifdef XF86VIDMODE
95
96static Bool
97VidModeClose(int i, ScreenPtr pScreen)
98{
99    VidModePtr pVidMode = VMPTR(pScreen);
100
101    /* This shouldn't happen */
102    if (!pVidMode)
103	return FALSE;
104
105    pScreen->CloseScreen = pVidMode->CloseScreen;
106
107    if (--VidModeCount == 0) {
108	free(dixLookupPrivate(&pScreen->devPrivates, VidModeKey));
109	dixSetPrivate(&pScreen->devPrivates, VidModeKey, NULL);
110	VidModeKey = NULL;
111    }
112    return pScreen->CloseScreen(i, pScreen);
113}
114
115Bool
116VidModeAvailable(int scrnIndex)
117{
118    ScrnInfoPtr pScrn;
119    VidModePtr pVidMode;
120
121    if (VidModeKey == NULL) {
122	DebugF("VidModeKey == NULL\n");
123	return FALSE;
124    }
125
126    pScrn = xf86Screens[scrnIndex];
127    if (pScrn == NULL) {
128	DebugF("pScrn == NULL\n");
129	return FALSE;
130    }
131
132    pVidMode = VMPTR(pScrn->pScreen);
133    if (pVidMode)
134	return TRUE;
135    else {
136	DebugF("pVidMode == NULL\n");
137	return FALSE;
138    }
139}
140
141Bool
142VidModeGetCurrentModeline(int scrnIndex, pointer *mode, int *dotClock)
143{
144    ScrnInfoPtr pScrn;
145
146    if (!VidModeAvailable(scrnIndex))
147	return FALSE;
148
149    pScrn = xf86Screens[scrnIndex];
150
151    if (pScrn->currentMode) {
152	*mode = (pointer)(pScrn->currentMode);
153	*dotClock = pScrn->currentMode->Clock;
154
155	return TRUE;
156    }
157    return FALSE;
158}
159
160int
161VidModeGetDotClock(int scrnIndex, int Clock)
162{
163    ScrnInfoPtr pScrn;
164
165    if (!VidModeAvailable(scrnIndex))
166	return 0;
167
168    pScrn = xf86Screens[scrnIndex];
169    if ((pScrn->progClock) || (Clock >= MAXCLOCKS))
170	return Clock;
171    else
172	return pScrn->clock[Clock];
173}
174
175int
176VidModeGetNumOfClocks(int scrnIndex, Bool *progClock)
177{
178    ScrnInfoPtr pScrn;
179
180    if (!VidModeAvailable(scrnIndex))
181	return 0;
182
183    pScrn = xf86Screens[scrnIndex];
184    if (pScrn->progClock){
185	*progClock = TRUE;
186	return 0;
187    } else {
188	*progClock = FALSE;
189	return pScrn->numClocks;
190    }
191}
192
193Bool
194VidModeGetClocks(int scrnIndex, int *Clocks)
195{
196    ScrnInfoPtr pScrn;
197    int i;
198
199    if (!VidModeAvailable(scrnIndex))
200	return FALSE;
201
202    pScrn = xf86Screens[scrnIndex];
203
204    if (pScrn->progClock)
205	return FALSE;
206
207    for (i = 0;  i < pScrn->numClocks;  i++)
208	*Clocks++ = pScrn->clock[i];
209
210    return TRUE;
211}
212
213
214Bool
215VidModeGetFirstModeline(int scrnIndex, pointer *mode, int *dotClock)
216{
217    ScrnInfoPtr pScrn;
218    VidModePtr pVidMode;
219
220    if (!VidModeAvailable(scrnIndex))
221	return FALSE;
222
223    pScrn = xf86Screens[scrnIndex];
224    pVidMode = VMPTR(pScrn->pScreen);
225    pVidMode->First = pScrn->modes;
226    pVidMode->Next =  pVidMode->First->next;
227
228    if (pVidMode->First->status == MODE_OK) {
229      *mode = (pointer)(pVidMode->First);
230      *dotClock = VidModeGetDotClock(scrnIndex, pVidMode->First->Clock);
231      return TRUE;
232    }
233
234    return VidModeGetNextModeline(scrnIndex, mode, dotClock);
235}
236
237Bool
238VidModeGetNextModeline(int scrnIndex, pointer *mode, int *dotClock)
239{
240    ScrnInfoPtr pScrn;
241    VidModePtr pVidMode;
242    DisplayModePtr p;
243
244    if (!VidModeAvailable(scrnIndex))
245	return FALSE;
246
247    pScrn = xf86Screens[scrnIndex];
248    pVidMode = VMPTR(pScrn->pScreen);
249
250    for (p = pVidMode->Next; p != NULL && p != pVidMode->First; p = p->next) {
251	if (p->status == MODE_OK) {
252	    pVidMode->Next = p->next;
253	    *mode = (pointer)p;
254	    *dotClock = VidModeGetDotClock(scrnIndex, p->Clock);
255	    return TRUE;
256	}
257    }
258
259    return FALSE;
260}
261
262Bool
263VidModeDeleteModeline(int scrnIndex, pointer mode)
264{
265    ScrnInfoPtr pScrn;
266
267    if ((mode == NULL) || (!VidModeAvailable(scrnIndex)))
268	return FALSE;
269
270    pScrn = xf86Screens[scrnIndex];
271    xf86DeleteMode(&(pScrn->modes), (DisplayModePtr)mode);
272    return TRUE;
273}
274
275Bool
276VidModeZoomViewport(int scrnIndex, int zoom)
277{
278    ScrnInfoPtr pScrn;
279
280    if (!VidModeAvailable(scrnIndex))
281	return FALSE;
282
283    pScrn = xf86Screens[scrnIndex];
284    xf86ZoomViewport(pScrn->pScreen, zoom);
285    return TRUE;
286}
287
288Bool
289VidModeSetViewPort(int scrnIndex, int x, int y)
290{
291    ScrnInfoPtr pScrn;
292
293    if (!VidModeAvailable(scrnIndex))
294	return FALSE;
295
296    pScrn = xf86Screens[scrnIndex];
297    pScrn->frameX0 = min( max(x, 0),
298	                 pScrn->virtualX - pScrn->currentMode->HDisplay );
299    pScrn->frameX1 = pScrn->frameX0 + pScrn->currentMode->HDisplay - 1;
300    pScrn->frameY0 = min( max(y, 0),
301	                 pScrn->virtualY - pScrn->currentMode->VDisplay );
302    pScrn->frameY1 = pScrn->frameY0 + pScrn->currentMode->VDisplay - 1;
303    if (pScrn->AdjustFrame != NULL)
304	(pScrn->AdjustFrame)(scrnIndex, pScrn->frameX0, pScrn->frameY0, 0);
305
306    return TRUE;
307}
308
309Bool
310VidModeGetViewPort(int scrnIndex, int *x, int *y)
311{
312    ScrnInfoPtr pScrn;
313
314    if (!VidModeAvailable(scrnIndex))
315	return FALSE;
316
317    pScrn = xf86Screens[scrnIndex];
318    *x = pScrn->frameX0;
319    *y = pScrn->frameY0;
320    return TRUE;
321}
322
323Bool
324VidModeSwitchMode(int scrnIndex, pointer mode)
325{
326    ScrnInfoPtr pScrn;
327    DisplayModePtr pTmpMode;
328    Bool retval;
329
330    if (!VidModeAvailable(scrnIndex))
331	return FALSE;
332
333    pScrn = xf86Screens[scrnIndex];
334    /* save in case we fail */
335    pTmpMode = pScrn->currentMode;
336    /* Force a mode switch */
337    pScrn->currentMode = NULL;
338    retval = xf86SwitchMode(pScrn->pScreen, mode);
339    /* we failed: restore it */
340    if (retval == FALSE)
341	pScrn->currentMode = pTmpMode;
342    return retval;
343}
344
345Bool
346VidModeLockZoom(int scrnIndex, Bool lock)
347{
348    ScrnInfoPtr pScrn;
349
350    if (!VidModeAvailable(scrnIndex))
351	return FALSE;
352
353    pScrn = xf86Screens[scrnIndex];
354
355    if (xf86Info.dontZoom)
356	return FALSE;
357
358    xf86LockZoom(pScrn->pScreen, lock);
359    return TRUE;
360}
361
362Bool
363VidModeGetMonitor(int scrnIndex, pointer *monitor)
364{
365    ScrnInfoPtr pScrn;
366
367    if (!VidModeAvailable(scrnIndex))
368	return FALSE;
369
370    pScrn = xf86Screens[scrnIndex];
371    *monitor = (pointer)(pScrn->monitor);
372
373    return TRUE;
374}
375
376ModeStatus
377VidModeCheckModeForMonitor(int scrnIndex, pointer mode)
378{
379    ScrnInfoPtr pScrn;
380
381    if ((mode == NULL) || (!VidModeAvailable(scrnIndex)))
382	return MODE_ERROR;
383
384    pScrn = xf86Screens[scrnIndex];
385
386    return xf86CheckModeForMonitor((DisplayModePtr)mode, pScrn->monitor);
387}
388
389ModeStatus
390VidModeCheckModeForDriver(int scrnIndex, pointer mode)
391{
392    ScrnInfoPtr pScrn;
393
394    if ((mode == NULL) || (!VidModeAvailable(scrnIndex)))
395	return MODE_ERROR;
396
397    pScrn = xf86Screens[scrnIndex];
398
399    return xf86CheckModeForDriver(pScrn, (DisplayModePtr)mode, 0);
400}
401
402void
403VidModeSetCrtcForMode(int scrnIndex, pointer mode)
404{
405    ScrnInfoPtr pScrn;
406    DisplayModePtr ScreenModes;
407
408    if ((mode == NULL) || (!VidModeAvailable(scrnIndex)))
409	return;
410
411    /* Ugly hack so that the xf86Mode.c function can be used without change */
412    pScrn = xf86Screens[scrnIndex];
413    ScreenModes = pScrn->modes;
414    pScrn->modes = (DisplayModePtr)mode;
415
416    xf86SetCrtcForModes(pScrn, pScrn->adjustFlags);
417    pScrn->modes = ScreenModes;
418    return;
419}
420
421Bool
422VidModeAddModeline(int scrnIndex, pointer mode)
423{
424    ScrnInfoPtr pScrn;
425
426    if ((mode == NULL) || (!VidModeAvailable(scrnIndex)))
427	return FALSE;
428
429    pScrn = xf86Screens[scrnIndex];
430
431    ((DisplayModePtr)mode)->name         = strdup(""); /* freed by deletemode */
432    ((DisplayModePtr)mode)->status       = MODE_OK;
433    ((DisplayModePtr)mode)->next         = pScrn->modes->next;
434    ((DisplayModePtr)mode)->prev         = pScrn->modes;
435    pScrn->modes->next                   = (DisplayModePtr)mode;
436    if( ((DisplayModePtr)mode)->next != NULL )
437      ((DisplayModePtr)mode)->next->prev   = (DisplayModePtr)mode;
438
439    return TRUE;
440}
441
442int
443VidModeGetNumOfModes(int scrnIndex)
444{
445    pointer mode = NULL;
446    int dotClock= 0, nummodes = 0;
447
448    if (!VidModeGetFirstModeline(scrnIndex, &mode, &dotClock))
449	return nummodes;
450
451    do {
452	nummodes++;
453	if (!VidModeGetNextModeline(scrnIndex, &mode, &dotClock))
454	    return nummodes;
455    } while (TRUE);
456}
457
458Bool
459VidModeSetGamma(int scrnIndex, float red, float green, float blue)
460{
461    ScrnInfoPtr pScrn;
462    Gamma gamma;
463
464    if (!VidModeAvailable(scrnIndex))
465	return FALSE;
466
467    pScrn = xf86Screens[scrnIndex];
468    gamma.red = red;
469    gamma.green = green;
470    gamma.blue = blue;
471    if (xf86ChangeGamma(pScrn->pScreen, gamma) != Success)
472	return FALSE;
473    else
474	return TRUE;
475}
476
477Bool
478VidModeGetGamma(int scrnIndex, float *red, float *green, float *blue)
479{
480    ScrnInfoPtr pScrn;
481
482    if (!VidModeAvailable(scrnIndex))
483	return FALSE;
484
485    pScrn = xf86Screens[scrnIndex];
486    *red = pScrn->gamma.red;
487    *green = pScrn->gamma.green;
488    *blue = pScrn->gamma.blue;
489    return TRUE;
490}
491
492Bool
493VidModeSetGammaRamp(int scrnIndex, int size, CARD16 *r, CARD16 *g, CARD16 *b)
494{
495    ScrnInfoPtr pScrn;
496
497    if (!VidModeAvailable(scrnIndex))
498        return FALSE;
499
500    pScrn = xf86Screens[scrnIndex];
501    xf86ChangeGammaRamp(pScrn->pScreen, size, r, g, b);
502    return TRUE;
503}
504
505Bool
506VidModeGetGammaRamp(int scrnIndex, int size, CARD16 *r, CARD16 *g, CARD16 *b)
507{
508    ScrnInfoPtr pScrn;
509
510    if (!VidModeAvailable(scrnIndex))
511        return FALSE;
512
513    pScrn = xf86Screens[scrnIndex];
514    xf86GetGammaRamp(pScrn->pScreen, size, r, g, b);
515    return TRUE;
516}
517
518int
519VidModeGetGammaRampSize(int scrnIndex)
520{
521    if (!VidModeAvailable(scrnIndex))
522        return 0;
523
524    return xf86GetGammaRampSize(xf86Screens[scrnIndex]->pScreen);
525}
526
527pointer
528VidModeCreateMode(void)
529{
530    DisplayModePtr mode;
531
532    mode = malloc(sizeof(DisplayModeRec));
533    if (mode != NULL) {
534	mode->name          = "";
535	mode->VScan         = 1;    /* divides refresh rate. default = 1 */
536	mode->Private       = NULL;
537	mode->next          = mode;
538	mode->prev          = mode;
539    }
540    return mode;
541}
542
543void
544VidModeCopyMode(pointer modefrom, pointer modeto)
545{
546  memcpy(modeto, modefrom, sizeof(DisplayModeRec));
547}
548
549
550int
551VidModeGetModeValue(pointer mode, int valtyp)
552{
553  int ret = 0;
554
555  switch (valtyp) {
556    case VIDMODE_H_DISPLAY:
557	ret = ((DisplayModePtr) mode)->HDisplay;
558	break;
559    case VIDMODE_H_SYNCSTART:
560	ret = ((DisplayModePtr)mode)->HSyncStart;
561	break;
562    case VIDMODE_H_SYNCEND:
563	ret = ((DisplayModePtr)mode)->HSyncEnd;
564	break;
565    case VIDMODE_H_TOTAL:
566	ret = ((DisplayModePtr)mode)->HTotal;
567	break;
568    case VIDMODE_H_SKEW:
569	ret = ((DisplayModePtr)mode)->HSkew;
570	break;
571    case VIDMODE_V_DISPLAY:
572	ret = ((DisplayModePtr)mode)->VDisplay;
573	break;
574    case VIDMODE_V_SYNCSTART:
575	ret = ((DisplayModePtr)mode)->VSyncStart;
576	break;
577    case VIDMODE_V_SYNCEND:
578	ret = ((DisplayModePtr)mode)->VSyncEnd;
579	break;
580    case VIDMODE_V_TOTAL:
581	ret = ((DisplayModePtr)mode)->VTotal;
582	break;
583    case VIDMODE_FLAGS:
584	ret = ((DisplayModePtr)mode)->Flags;
585	break;
586    case VIDMODE_CLOCK:
587	ret = ((DisplayModePtr)mode)->Clock;
588	break;
589  }
590  return ret;
591}
592
593void
594VidModeSetModeValue(pointer mode, int valtyp, int val)
595{
596  switch (valtyp) {
597    case VIDMODE_H_DISPLAY:
598	((DisplayModePtr)mode)->HDisplay = val;
599	break;
600    case VIDMODE_H_SYNCSTART:
601	((DisplayModePtr)mode)->HSyncStart = val;
602	break;
603    case VIDMODE_H_SYNCEND:
604	((DisplayModePtr)mode)->HSyncEnd = val;
605	break;
606    case VIDMODE_H_TOTAL:
607	((DisplayModePtr)mode)->HTotal = val;
608	break;
609    case VIDMODE_H_SKEW:
610	((DisplayModePtr)mode)->HSkew = val;
611	break;
612    case VIDMODE_V_DISPLAY:
613	((DisplayModePtr)mode)->VDisplay = val;
614	break;
615    case VIDMODE_V_SYNCSTART:
616	((DisplayModePtr)mode)->VSyncStart = val;
617	break;
618    case VIDMODE_V_SYNCEND:
619	((DisplayModePtr)mode)->VSyncEnd = val;
620	break;
621    case VIDMODE_V_TOTAL:
622	((DisplayModePtr)mode)->VTotal = val;
623	break;
624    case VIDMODE_FLAGS:
625	((DisplayModePtr)mode)->Flags = val;
626	break;
627    case VIDMODE_CLOCK:
628	((DisplayModePtr)mode)->Clock = val;
629	break;
630  }
631  return;
632}
633
634vidMonitorValue
635VidModeGetMonitorValue(pointer monitor, int valtyp, int indx)
636{
637  vidMonitorValue ret;
638
639  switch (valtyp) {
640    case VIDMODE_MON_VENDOR:
641	ret.ptr = (((MonPtr)monitor)->vendor);
642	break;
643    case VIDMODE_MON_MODEL:
644	ret.ptr = (((MonPtr)monitor)->model);
645	break;
646    case VIDMODE_MON_NHSYNC:
647	ret.i = ((MonPtr)monitor)->nHsync;
648	break;
649    case VIDMODE_MON_NVREFRESH:
650	ret.i = ((MonPtr)monitor)->nVrefresh;
651	break;
652    case VIDMODE_MON_HSYNC_LO:
653	ret.f = (100.0 * ((MonPtr)monitor)->hsync[indx].lo);
654	break;
655    case VIDMODE_MON_HSYNC_HI:
656	ret.f = (100.0 * ((MonPtr)monitor)->hsync[indx].hi);
657	break;
658    case VIDMODE_MON_VREFRESH_LO:
659	ret.f = (100.0 * ((MonPtr)monitor)->vrefresh[indx].lo);
660	break;
661    case VIDMODE_MON_VREFRESH_HI:
662	ret.f = (100.0 * ((MonPtr)monitor)->vrefresh[indx].hi);
663	break;
664  }
665  return ret;
666}
667
668
669#endif /* XF86VIDMODE */
670