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/*
* Copyright © 2006 Keith Packard
*
* 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 the copyright holders not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. The copyright holders make no representations
* about the suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL THE COPYRIGHT HOLDERS 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.
*/
#ifdef HAVE_XORG_CONFIG_H
#include <xorg-config.h>
#else
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#endif
#include <stddef.h>
#include <string.h>
#include <stdio.h>
#include "xf86.h"
#include "xf86DDC.h"
#include "fb.h"
#include "windowstr.h"
#include "xf86Crtc.h"
#include "xf86Modes.h"
#include "xf86RandR12.h"
#include "X11/extensions/render.h"
#define DPMS_SERVER
#include "X11/extensions/dpms.h"
#include "X11/Xatom.h"
/* borrowed from composite extension, move to Render and publish? */
static VisualPtr
compGetWindowVisual (WindowPtr pWin)
{
ScreenPtr pScreen = pWin->drawable.pScreen;
VisualID vid = wVisual (pWin);
int i;
for (i = 0; i < pScreen->numVisuals; i++)
if (pScreen->visuals[i].vid == vid)
return &pScreen->visuals[i];
return 0;
}
static PictFormatPtr
compWindowFormat (WindowPtr pWin)
{
ScreenPtr pScreen = pWin->drawable.pScreen;
return PictureMatchVisual (pScreen, pWin->drawable.depth,
compGetWindowVisual (pWin));
}
#define F(x) IntToxFixed(x)
#define toF(x) ((float) (x) / 65536.0f)
static void
xf86RotateCrtcRedisplay (xf86CrtcPtr crtc, RegionPtr region)
{
ScrnInfoPtr scrn = crtc->scrn;
ScreenPtr screen = scrn->pScreen;
WindowPtr root = WindowTable[screen->myNum];
PixmapPtr dst_pixmap = crtc->rotatedPixmap;
PictFormatPtr format = compWindowFormat (WindowTable[screen->myNum]);
int error;
PicturePtr src, dst;
int n = REGION_NUM_RECTS(region);
BoxPtr b = REGION_RECTS(region);
XID include_inferiors = IncludeInferiors;
src = CreatePicture (None,
&root->drawable,
format,
CPSubwindowMode,
&include_inferiors,
serverClient,
&error);
if (!src)
return;
dst = CreatePicture (None,
&dst_pixmap->drawable,
format,
0L,
NULL,
serverClient,
&error);
if (!dst)
return;
error = SetPictureTransform (src, &crtc->crtc_to_framebuffer);
if (error)
return;
if (crtc->transform_in_use && crtc->filter)
SetPicturePictFilter (src, crtc->filter,
crtc->params, crtc->nparams);
while (n--)
{
BoxRec dst_box;
dst_box = *b;
dst_box.x1 -= crtc->filter_width >> 1;
dst_box.x2 += crtc->filter_width >> 1;
dst_box.y1 -= crtc->filter_height >> 1;
dst_box.y2 += crtc->filter_height >> 1;
pict_f_transform_bounds (&crtc->f_framebuffer_to_crtc, &dst_box);
CompositePicture (PictOpSrc,
src, NULL, dst,
dst_box.x1, dst_box.y1, 0, 0, dst_box.x1, dst_box.y1,
dst_box.x2 - dst_box.x1,
dst_box.y2 - dst_box.y1);
b++;
}
FreePicture (src, None);
FreePicture (dst, None);
}
static void
xf86CrtcDamageShadow (xf86CrtcPtr crtc)
{
ScrnInfoPtr pScrn = crtc->scrn;
BoxRec damage_box;
RegionRec damage_region;
ScreenPtr pScreen = pScrn->pScreen;
damage_box.x1 = 0;
damage_box.x2 = crtc->mode.HDisplay;
damage_box.y1 = 0;
damage_box.y2 = crtc->mode.VDisplay;
PictureTransformBounds (&damage_box, &crtc->crtc_to_framebuffer);
REGION_INIT (pScreen, &damage_region, &damage_box, 1);
DamageRegionAppend(&(*pScreen->GetScreenPixmap)(pScreen)->drawable,
&damage_region);
REGION_UNINIT (pScreen, &damage_region);
}
static void
xf86CrtcShadowClear (xf86CrtcPtr crtc)
{
PixmapPtr dst_pixmap = crtc->rotatedPixmap;
ScrnInfoPtr scrn = crtc->scrn;
ScreenPtr screen = scrn->pScreen;
PicturePtr dst;
PictFormatPtr format = compWindowFormat (WindowTable[screen->myNum]);
static xRenderColor black = { 0, 0, 0, 0 };
xRectangle rect;
int error;
if (!dst_pixmap)
return;
dst = CreatePicture (None,
&dst_pixmap->drawable,
format,
0L,
NULL,
serverClient,
&error);
if (!dst)
return;
rect.x = 0;
rect.y = 0;
rect.width = dst_pixmap->drawable.width;
rect.height = dst_pixmap->drawable.height;
CompositeRects (PictOpSrc, dst, &black, 1, &rect);
FreePicture (dst, None);
}
static void
xf86RotatePrepare (ScreenPtr pScreen)
{
ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(pScrn);
int c;
for (c = 0; c < xf86_config->num_crtc; c++)
{
xf86CrtcPtr crtc = xf86_config->crtc[c];
if (crtc->rotatedData && !crtc->rotatedPixmap)
{
crtc->rotatedPixmap = crtc->funcs->shadow_create (crtc,
crtc->rotatedData,
crtc->mode.HDisplay,
crtc->mode.VDisplay);
if (!xf86_config->rotation_damage_registered)
{
/* Hook damage to screen pixmap */
DamageRegister (&(*pScreen->GetScreenPixmap)(pScreen)->drawable,
xf86_config->rotation_damage);
xf86_config->rotation_damage_registered = TRUE;
}
xf86CrtcDamageShadow (crtc);
}
}
}
static Bool
xf86RotateRedisplay(ScreenPtr pScreen)
{
ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(pScrn);
DamagePtr damage = xf86_config->rotation_damage;
RegionPtr region;
if (!damage)
return FALSE;
xf86RotatePrepare (pScreen);
region = DamageRegion(damage);
if (REGION_NOTEMPTY(pScreen, region))
{
int c;
SourceValidateProcPtr SourceValidate;
/*
* SourceValidate is used by the software cursor code
* to pull the cursor off of the screen when reading
* bits from the frame buffer. Bypassing this function
* leaves the software cursor in place
*/
SourceValidate = pScreen->SourceValidate;
pScreen->SourceValidate = NULL;
for (c = 0; c < xf86_config->num_crtc; c++)
{
xf86CrtcPtr crtc = xf86_config->crtc[c];
if (crtc->transform_in_use && crtc->enabled)
{
RegionRec crtc_damage;
/* compute portion of damage that overlaps crtc */
REGION_INIT(pScreen, &crtc_damage, &crtc->bounds, 1);
REGION_INTERSECT (pScreen, &crtc_damage, &crtc_damage, region);
/* update damaged region */
if (REGION_NOTEMPTY(pScreen, &crtc_damage))
xf86RotateCrtcRedisplay (crtc, &crtc_damage);
REGION_UNINIT (pScreen, &crtc_damage);
}
}
pScreen->SourceValidate = SourceValidate;
DamageEmpty(damage);
}
return TRUE;
}
static void
xf86RotateBlockHandler(int screenNum, pointer blockData,
pointer pTimeout, pointer pReadmask)
{
ScreenPtr pScreen = screenInfo.screens[screenNum];
ScrnInfoPtr pScrn = xf86Screens[screenNum];
xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(pScrn);
pScreen->BlockHandler = xf86_config->BlockHandler;
(*pScreen->BlockHandler) (screenNum, blockData, pTimeout, pReadmask);
if (xf86RotateRedisplay(pScreen))
{
/* Re-wrap if rotation is still happening */
xf86_config->BlockHandler = pScreen->BlockHandler;
pScreen->BlockHandler = xf86RotateBlockHandler;
}
}
static void
xf86RotateDestroy (xf86CrtcPtr crtc)
{
ScrnInfoPtr pScrn = crtc->scrn;
ScreenPtr pScreen = pScrn->pScreen;
xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(pScrn);
int c;
/* Free memory from rotation */
if (crtc->rotatedPixmap || crtc->rotatedData)
{
crtc->funcs->shadow_destroy (crtc, crtc->rotatedPixmap, crtc->rotatedData);
crtc->rotatedPixmap = NULL;
crtc->rotatedData = NULL;
}
for (c = 0; c < xf86_config->num_crtc; c++)
if (xf86_config->crtc[c]->transform_in_use)
return;
/*
* Clean up damage structures when no crtcs are rotated
*/
if (xf86_config->rotation_damage)
{
/* Free damage structure */
if (xf86_config->rotation_damage_registered)
{
DamageUnregister (&(*pScreen->GetScreenPixmap)(pScreen)->drawable,
xf86_config->rotation_damage);
xf86_config->rotation_damage_registered = FALSE;
}
DamageDestroy (xf86_config->rotation_damage);
xf86_config->rotation_damage = NULL;
}
}
_X_EXPORT void
xf86RotateFreeShadow(ScrnInfoPtr pScrn)
{
xf86CrtcConfigPtr config = XF86_CRTC_CONFIG_PTR(pScrn);
int c;
for (c = 0; c < config->num_crtc; c++) {
xf86CrtcPtr crtc = config->crtc[c];
if (crtc->rotatedPixmap || crtc->rotatedData) {
crtc->funcs->shadow_destroy(crtc, crtc->rotatedPixmap,
crtc->rotatedData);
crtc->rotatedPixmap = NULL;
crtc->rotatedData = NULL;
}
}
}
_X_EXPORT void
xf86RotateCloseScreen (ScreenPtr screen)
{
ScrnInfoPtr scrn = xf86Screens[screen->myNum];
xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
int c;
for (c = 0; c < xf86_config->num_crtc; c++)
xf86RotateDestroy (xf86_config->crtc[c]);
}
_X_EXPORT Bool
xf86CrtcRotate (xf86CrtcPtr crtc, DisplayModePtr mode, Rotation rotation)
{
ScrnInfoPtr pScrn = crtc->scrn;
xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(pScrn);
/* if this is called during ScreenInit() we don't have pScrn->pScreen yet */
ScreenPtr pScreen = screenInfo.screens[pScrn->scrnIndex];
PictTransform crtc_to_fb;
struct pict_f_transform f_crtc_to_fb, f_fb_to_crtc;
xFixed *new_params = NULL;
int new_nparams = 0;
PictFilterPtr new_filter = NULL;
int new_width = 0;
int new_height = 0;
RRTransformPtr transform = NULL;
#ifdef RANDR_12_INTERFACE
if (crtc->randr_crtc)
transform = RRCrtcGetTransform (crtc->randr_crtc);
#endif
if (!transform ||
!RRComputeTransform (crtc->x, crtc->y,
crtc->mode.HDisplay, crtc->mode.VDisplay,
rotation,
transform,
&crtc_to_fb,
&f_crtc_to_fb,
&f_fb_to_crtc))
{
/*
* If the untranslated transformation is the identity,
* disable the shadow buffer
*/
xf86RotateDestroy (crtc);
crtc->transform_in_use = FALSE;
if (new_params)
xfree (new_params);
new_params = NULL;
new_nparams = 0;
new_filter = NULL;
new_width = 0;
new_height = 0;
}
else
{
/*
* these are the size of the shadow pixmap, which
* matches the mode, not the pre-rotated copy in the
* frame buffer
*/
int width = mode->HDisplay;
int height = mode->VDisplay;
void *shadowData = crtc->rotatedData;
PixmapPtr shadow = crtc->rotatedPixmap;
int old_width = shadow ? shadow->drawable.width : 0;
int old_height = shadow ? shadow->drawable.height : 0;
/* Allocate memory for rotation */
if (old_width != width || old_height != height)
{
if (shadow || shadowData)
{
crtc->funcs->shadow_destroy (crtc, shadow, shadowData);
crtc->rotatedPixmap = NULL;
crtc->rotatedData = NULL;
}
shadowData = crtc->funcs->shadow_allocate (crtc, width, height);
if (!shadowData)
goto bail1;
crtc->rotatedData = shadowData;
/* shadow will be damaged in xf86RotatePrepare */
}
else
{
/* mark shadowed area as damaged so it will be repainted */
xf86CrtcDamageShadow (crtc);
}
if (!xf86_config->rotation_damage)
{
/* Create damage structure */
xf86_config->rotation_damage = DamageCreate (NULL, NULL,
DamageReportNone,
TRUE, pScreen, pScreen);
if (!xf86_config->rotation_damage)
goto bail2;
/* Wrap block handler */
xf86_config->BlockHandler = pScreen->BlockHandler;
pScreen->BlockHandler = xf86RotateBlockHandler;
}
#ifdef RANDR_12_INTERFACE
if (transform)
{
if (transform->nparams) {
new_params = xalloc (transform->nparams * sizeof (xFixed));
if (new_params) {
memcpy (new_params, transform->params,
transform->nparams * sizeof (xFixed));
new_nparams = transform->nparams;
new_filter = transform->filter;
}
} else
new_filter = transform->filter;
if (new_filter)
{
new_width = new_filter->width;
new_height = new_filter->height;
}
}
#endif
if (0)
{
bail2:
if (shadow || shadowData)
{
crtc->funcs->shadow_destroy (crtc, shadow, shadowData);
crtc->rotatedPixmap = NULL;
crtc->rotatedData = NULL;
}
bail1:
if (old_width && old_height)
crtc->rotatedPixmap = crtc->funcs->shadow_create (crtc,
NULL,
old_width,
old_height);
return FALSE;
}
crtc->transform_in_use = TRUE;
}
crtc->crtc_to_framebuffer = crtc_to_fb;
crtc->f_crtc_to_framebuffer = f_crtc_to_fb;
crtc->f_framebuffer_to_crtc = f_fb_to_crtc;
if (crtc->params)
xfree (crtc->params);
crtc->params = new_params;
crtc->nparams = new_nparams;
crtc->filter = new_filter;
crtc->filter_width = new_width;
crtc->filter_height = new_height;
crtc->bounds.x1 = 0;
crtc->bounds.x2 = crtc->mode.HDisplay;
crtc->bounds.y1 = 0;
crtc->bounds.y2 = crtc->mode.VDisplay;
pict_f_transform_bounds (&f_crtc_to_fb, &crtc->bounds);
/* All done */
return TRUE;
}
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