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xserver/hw/xfree86/ramdac/xf86HWCurs.c

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#ifdef HAVE_XORG_CONFIG_H
#include <xorg-config.h>
#endif
#include <string.h>
#include "misc.h"
#include "xf86.h"
#include "xf86_OSproc.h"
#include <X11/X.h>
#include "scrnintstr.h"
#include "pixmapstr.h"
#include "windowstr.h"
#include "xf86str.h"
#include "cursorstr.h"
#include "mi.h"
#include "mipointer.h"
#include "randrstr.h"
#include "xf86CursorPriv.h"
#include "servermd.h"
static void
xf86RecolorCursor_locked(xf86CursorScreenPtr ScreenPriv, CursorPtr pCurs);
static CARD32
xf86ReverseBitOrder(CARD32 v)
{
return (((0x01010101 & v) << 7) | ((0x02020202 & v) << 5) |
((0x04040404 & v) << 3) | ((0x08080808 & v) << 1) |
((0x10101010 & v) >> 1) | ((0x20202020 & v) >> 3) |
((0x40404040 & v) >> 5) | ((0x80808080 & v) >> 7));
}
#if BITMAP_SCANLINE_PAD == 64
#if 1
/* Cursors might be only 32 wide. Give'em a chance */
#define SCANLINE CARD32
#define CUR_BITMAP_SCANLINE_PAD 32
#define CUR_LOG2_BITMAP_PAD 5
#define REVERSE_BIT_ORDER(w) xf86ReverseBitOrder(w)
#else
#define SCANLINE CARD64
#define CUR_BITMAP_SCANLINE_PAD BITMAP_SCANLINE_PAD
#define CUR_LOG2_BITMAP_PAD LOG2_BITMAP_PAD
#define REVERSE_BIT_ORDER(w) xf86CARD64ReverseBits(w)
static CARD64 xf86CARD64ReverseBits(CARD64 w);
static CARD64
xf86CARD64ReverseBits(CARD64 w)
{
unsigned char *p = (unsigned char *) &w;
p[0] = byte_reversed[p[0]];
p[1] = byte_reversed[p[1]];
p[2] = byte_reversed[p[2]];
p[3] = byte_reversed[p[3]];
p[4] = byte_reversed[p[4]];
p[5] = byte_reversed[p[5]];
p[6] = byte_reversed[p[6]];
p[7] = byte_reversed[p[7]];
return w;
}
#endif
#else
#define SCANLINE CARD32
#define CUR_BITMAP_SCANLINE_PAD BITMAP_SCANLINE_PAD
#define CUR_LOG2_BITMAP_PAD LOG2_BITMAP_PAD
#define REVERSE_BIT_ORDER(w) xf86ReverseBitOrder(w)
#endif /* BITMAP_SCANLINE_PAD == 64 */
static unsigned char *RealizeCursorInterleave0(xf86CursorInfoPtr, CursorPtr);
static unsigned char *RealizeCursorInterleave1(xf86CursorInfoPtr, CursorPtr);
static unsigned char *RealizeCursorInterleave8(xf86CursorInfoPtr, CursorPtr);
static unsigned char *RealizeCursorInterleave16(xf86CursorInfoPtr, CursorPtr);
static unsigned char *RealizeCursorInterleave32(xf86CursorInfoPtr, CursorPtr);
static unsigned char *RealizeCursorInterleave64(xf86CursorInfoPtr, CursorPtr);
Bool
xf86InitHardwareCursor(ScreenPtr pScreen, xf86CursorInfoPtr infoPtr)
{
if ((infoPtr->MaxWidth <= 0) || (infoPtr->MaxHeight <= 0))
return FALSE;
/* These are required for now */
if (!infoPtr->SetCursorPosition ||
!xf86DriverHasLoadCursorImage(infoPtr) ||
!infoPtr->HideCursor ||
!xf86DriverHasShowCursor(infoPtr) ||
!infoPtr->SetCursorColors)
return FALSE;
if (infoPtr->RealizeCursor) {
/* Don't overwrite a driver provided Realize Cursor function */
}
else if (HARDWARE_CURSOR_SOURCE_MASK_INTERLEAVE_1 & infoPtr->Flags) {
infoPtr->RealizeCursor = RealizeCursorInterleave1;
}
else if (HARDWARE_CURSOR_SOURCE_MASK_INTERLEAVE_8 & infoPtr->Flags) {
infoPtr->RealizeCursor = RealizeCursorInterleave8;
}
else if (HARDWARE_CURSOR_SOURCE_MASK_INTERLEAVE_16 & infoPtr->Flags) {
infoPtr->RealizeCursor = RealizeCursorInterleave16;
}
else if (HARDWARE_CURSOR_SOURCE_MASK_INTERLEAVE_32 & infoPtr->Flags) {
infoPtr->RealizeCursor = RealizeCursorInterleave32;
}
else if (HARDWARE_CURSOR_SOURCE_MASK_INTERLEAVE_64 & infoPtr->Flags) {
infoPtr->RealizeCursor = RealizeCursorInterleave64;
}
else { /* not interleaved */
infoPtr->RealizeCursor = RealizeCursorInterleave0;
}
infoPtr->pScrn = xf86ScreenToScrn(pScreen);
return TRUE;
}
static Bool
xf86ScreenCheckHWCursor(ScreenPtr pScreen, CursorPtr cursor, xf86CursorInfoPtr infoPtr)
{
return
(cursor->bits->argb && infoPtr->UseHWCursorARGB &&
infoPtr->UseHWCursorARGB(pScreen, cursor)) ||
(cursor->bits->argb == 0 &&
cursor->bits->height <= infoPtr->MaxHeight &&
cursor->bits->width <= infoPtr->MaxWidth &&
(!infoPtr->UseHWCursor || infoPtr->UseHWCursor(pScreen, cursor)));
}
Bool
xf86CheckHWCursor(ScreenPtr pScreen, CursorPtr cursor, xf86CursorInfoPtr infoPtr)
{
ScreenPtr pSlave;
Bool use_hw_cursor = TRUE;
input_lock();
if (!xf86ScreenCheckHWCursor(pScreen, cursor, infoPtr)) {
use_hw_cursor = FALSE;
goto unlock;
}
/* ask each driver consuming a pixmap if it can support HW cursor */
xorg_list_for_each_entry(pSlave, &pScreen->slave_list, slave_head) {
xf86CursorScreenPtr sPriv;
if (!RRHasScanoutPixmap(pSlave))
continue;
sPriv = dixLookupPrivate(&pSlave->devPrivates, xf86CursorScreenKey);
if (!sPriv) { /* NULL if Option "SWCursor", possibly other conditions */
use_hw_cursor = FALSE;
break;
}
/* FALSE if HWCursor not supported by slave */
if (!xf86ScreenCheckHWCursor(pSlave, cursor, sPriv->CursorInfoPtr)) {
use_hw_cursor = FALSE;
break;
}
}
unlock:
input_unlock();
return use_hw_cursor;
}
static Bool
xf86ScreenSetCursor(ScreenPtr pScreen, CursorPtr pCurs, int x, int y)
{
xf86CursorScreenPtr ScreenPriv =
(xf86CursorScreenPtr) dixLookupPrivate(&pScreen->devPrivates,
xf86CursorScreenKey);
xf86CursorInfoPtr infoPtr;
unsigned char *bits;
if (!ScreenPriv) { /* NULL if Option "SWCursor" */
return (pCurs == NullCursor);
}
infoPtr = ScreenPriv->CursorInfoPtr;
if (pCurs == NullCursor) {
(*infoPtr->HideCursor) (infoPtr->pScrn);
return TRUE;
}
/*
* Hot plugged GPU's do not have a CursorScreenKey, force sw cursor.
* This check can be removed once dix/privates.c gets relocation code for
* PRIVATE_CURSOR. Also see the related comment in AddGPUScreen().
*/
if (!_dixGetScreenPrivateKey(CursorScreenKey, pScreen))
return FALSE;
bits =
dixLookupScreenPrivate(&pCurs->devPrivates, CursorScreenKey, pScreen);
x -= infoPtr->pScrn->frameX0;
y -= infoPtr->pScrn->frameY0;
if (!pCurs->bits->argb || !xf86DriverHasLoadCursorARGB(infoPtr))
if (!bits) {
bits = (*infoPtr->RealizeCursor) (infoPtr, pCurs);
dixSetScreenPrivate(&pCurs->devPrivates, CursorScreenKey, pScreen,
bits);
}
if (!(infoPtr->Flags & HARDWARE_CURSOR_UPDATE_UNHIDDEN))
(*infoPtr->HideCursor) (infoPtr->pScrn);
if (pCurs->bits->argb && xf86DriverHasLoadCursorARGB(infoPtr)) {
if (!xf86DriverLoadCursorARGB (infoPtr, pCurs))
return FALSE;
} else
if (bits)
if (!xf86DriverLoadCursorImage (infoPtr, bits))
return FALSE;
xf86RecolorCursor_locked (ScreenPriv, pCurs);
(*infoPtr->SetCursorPosition) (infoPtr->pScrn, x, y);
return xf86DriverShowCursor(infoPtr);
}
Bool
xf86SetCursor(ScreenPtr pScreen, CursorPtr pCurs, int x, int y)
{
xf86CursorScreenPtr ScreenPriv =
(xf86CursorScreenPtr) dixLookupPrivate(&pScreen->devPrivates,
xf86CursorScreenKey);
ScreenPtr pSlave;
Bool ret = FALSE;
input_lock();
x -= ScreenPriv->HotX;
y -= ScreenPriv->HotY;
if (!xf86ScreenSetCursor(pScreen, pCurs, x, y))
goto out;
/* ask each slave driver to set the cursor. */
xorg_list_for_each_entry(pSlave, &pScreen->slave_list, slave_head) {
if (!RRHasScanoutPixmap(pSlave))
continue;
if (!xf86ScreenSetCursor(pSlave, pCurs, x, y)) {
/*
* hide the master (and successfully set slave) cursors,
* otherwise both the hw and sw cursor will show.
*/
xf86SetCursor(pScreen, NullCursor, x, y);
goto out;
}
}
ret = TRUE;
out:
input_unlock();
return ret;
}
void
xf86SetTransparentCursor(ScreenPtr pScreen)
{
xf86CursorScreenPtr ScreenPriv =
(xf86CursorScreenPtr) dixLookupPrivate(&pScreen->devPrivates,
xf86CursorScreenKey);
xf86CursorInfoPtr infoPtr = ScreenPriv->CursorInfoPtr;
input_lock();
if (!ScreenPriv->transparentData)
ScreenPriv->transparentData =
(*infoPtr->RealizeCursor) (infoPtr, NullCursor);
if (!(infoPtr->Flags & HARDWARE_CURSOR_UPDATE_UNHIDDEN))
(*infoPtr->HideCursor) (infoPtr->pScrn);
if (ScreenPriv->transparentData)
xf86DriverLoadCursorImage (infoPtr,
ScreenPriv->transparentData);
xf86DriverShowCursor(infoPtr);
input_unlock();
}
static void
xf86ScreenMoveCursor(ScreenPtr pScreen, int x, int y)
{
xf86CursorScreenPtr ScreenPriv =
(xf86CursorScreenPtr) dixLookupPrivate(&pScreen->devPrivates,
xf86CursorScreenKey);
xf86CursorInfoPtr infoPtr = ScreenPriv->CursorInfoPtr;
x -= infoPtr->pScrn->frameX0;
y -= infoPtr->pScrn->frameY0;
(*infoPtr->SetCursorPosition) (infoPtr->pScrn, x, y);
}
void
xf86MoveCursor(ScreenPtr pScreen, int x, int y)
{
xf86CursorScreenPtr ScreenPriv =
(xf86CursorScreenPtr) dixLookupPrivate(&pScreen->devPrivates,
xf86CursorScreenKey);
ScreenPtr pSlave;
input_lock();
x -= ScreenPriv->HotX;
y -= ScreenPriv->HotY;
xf86ScreenMoveCursor(pScreen, x, y);
/* ask each slave driver to move the cursor */
xorg_list_for_each_entry(pSlave, &pScreen->slave_list, slave_head) {
if (!RRHasScanoutPixmap(pSlave))
continue;
xf86ScreenMoveCursor(pSlave, x, y);
}
input_unlock();
}
static void
xf86RecolorCursor_locked(xf86CursorScreenPtr ScreenPriv, CursorPtr pCurs)
{
xf86CursorInfoPtr infoPtr = ScreenPriv->CursorInfoPtr;
/* recoloring isn't applicable to ARGB cursors and drivers
shouldn't have to ignore SetCursorColors requests */
if (pCurs->bits->argb)
return;
if (ScreenPriv->PalettedCursor) {
xColorItem sourceColor, maskColor;
ColormapPtr pmap = ScreenPriv->pInstalledMap;
if (!pmap)
return;
sourceColor.red = pCurs->foreRed;
sourceColor.green = pCurs->foreGreen;
sourceColor.blue = pCurs->foreBlue;
FakeAllocColor(pmap, &sourceColor);
maskColor.red = pCurs->backRed;
maskColor.green = pCurs->backGreen;
maskColor.blue = pCurs->backBlue;
FakeAllocColor(pmap, &maskColor);
FakeFreeColor(pmap, sourceColor.pixel);
FakeFreeColor(pmap, maskColor.pixel);
(*infoPtr->SetCursorColors) (infoPtr->pScrn,
maskColor.pixel, sourceColor.pixel);
}
else { /* Pass colors in 8-8-8 RGB format */
(*infoPtr->SetCursorColors) (infoPtr->pScrn,
(pCurs->backBlue >> 8) |
((pCurs->backGreen >> 8) << 8) |
((pCurs->backRed >> 8) << 16),
(pCurs->foreBlue >> 8) |
((pCurs->foreGreen >> 8) << 8) |
((pCurs->foreRed >> 8) << 16)
);
}
}
void
xf86RecolorCursor(ScreenPtr pScreen, CursorPtr pCurs, Bool displayed)
{
xf86CursorScreenPtr ScreenPriv =
(xf86CursorScreenPtr) dixLookupPrivate(&pScreen->devPrivates,
xf86CursorScreenKey);
input_lock();
xf86RecolorCursor_locked (ScreenPriv, pCurs);
input_unlock();
}
/* These functions assume that MaxWidth is a multiple of 32 */
static unsigned char *
RealizeCursorInterleave0(xf86CursorInfoPtr infoPtr, CursorPtr pCurs)
{
SCANLINE *SrcS, *SrcM, *DstS, *DstM;
SCANLINE *pSrc, *pMsk;
unsigned char *mem;
int size = (infoPtr->MaxWidth * infoPtr->MaxHeight) >> 2;
int SrcPitch, DstPitch, Pitch, y, x;
/* how many words are in the source or mask */
int words = size / (CUR_BITMAP_SCANLINE_PAD / 4);
if (!(mem = calloc(1, size)))
return NULL;
if (pCurs == NullCursor) {
if (infoPtr->Flags & HARDWARE_CURSOR_INVERT_MASK) {
DstM = (SCANLINE *) mem;
if (!(infoPtr->Flags & HARDWARE_CURSOR_SWAP_SOURCE_AND_MASK))
DstM += words;
memset(DstM, -1, words * sizeof(SCANLINE));
}
return mem;
}
/* SrcPitch == the number of scanlines wide the cursor image is */
SrcPitch = (pCurs->bits->width + (BITMAP_SCANLINE_PAD - 1)) >>
CUR_LOG2_BITMAP_PAD;
/* DstPitch is the width of the hw cursor in scanlines */
DstPitch = infoPtr->MaxWidth >> CUR_LOG2_BITMAP_PAD;
Pitch = SrcPitch < DstPitch ? SrcPitch : DstPitch;
SrcS = (SCANLINE *) pCurs->bits->source;
SrcM = (SCANLINE *) pCurs->bits->mask;
DstS = (SCANLINE *) mem;
DstM = DstS + words;
if (infoPtr->Flags & HARDWARE_CURSOR_SWAP_SOURCE_AND_MASK) {
SCANLINE *tmp;
tmp = DstS;
DstS = DstM;
DstM = tmp;
}
if (infoPtr->Flags & HARDWARE_CURSOR_AND_SOURCE_WITH_MASK) {
for (y = pCurs->bits->height, pSrc = DstS, pMsk = DstM;
y--;
pSrc += DstPitch, pMsk += DstPitch, SrcS += SrcPitch, SrcM +=
SrcPitch) {
for (x = 0; x < Pitch; x++) {
pSrc[x] = SrcS[x] & SrcM[x];
pMsk[x] = SrcM[x];
}
}
}
else {
for (y = pCurs->bits->height, pSrc = DstS, pMsk = DstM;
y--;
pSrc += DstPitch, pMsk += DstPitch, SrcS += SrcPitch, SrcM +=
SrcPitch) {
for (x = 0; x < Pitch; x++) {
pSrc[x] = SrcS[x];
pMsk[x] = SrcM[x];
}
}
}
if (infoPtr->Flags & HARDWARE_CURSOR_NIBBLE_SWAPPED) {
int count = size;
unsigned char *pntr1 = (unsigned char *) DstS;
unsigned char *pntr2 = (unsigned char *) DstM;
unsigned char a, b;
while (count) {
a = *pntr1;
b = *pntr2;
*pntr1 = ((a & 0xF0) >> 4) | ((a & 0x0F) << 4);
*pntr2 = ((b & 0xF0) >> 4) | ((b & 0x0F) << 4);
pntr1++;
pntr2++;
count -= 2;
}
}
/*
* Must be _after_ HARDWARE_CURSOR_AND_SOURCE_WITH_MASK to avoid wiping
* out entire source mask.
*/
if (infoPtr->Flags & HARDWARE_CURSOR_INVERT_MASK) {
int count = words;
SCANLINE *pntr = DstM;
while (count--) {
*pntr = ~(*pntr);
pntr++;
}
}
if (infoPtr->Flags & HARDWARE_CURSOR_BIT_ORDER_MSBFIRST) {
for (y = pCurs->bits->height, pSrc = DstS, pMsk = DstM;
y--; pSrc += DstPitch, pMsk += DstPitch) {
for (x = 0; x < Pitch; x++) {
pSrc[x] = REVERSE_BIT_ORDER(pSrc[x]);
pMsk[x] = REVERSE_BIT_ORDER(pMsk[x]);
}
}
}
return mem;
}
static unsigned char *
RealizeCursorInterleave1(xf86CursorInfoPtr infoPtr, CursorPtr pCurs)
{
unsigned char *DstS, *DstM;
unsigned char *pntr;
unsigned char *mem, *mem2;
int count;
int size = (infoPtr->MaxWidth * infoPtr->MaxHeight) >> 2;
/* Realize the cursor without interleaving */
if (!(mem2 = RealizeCursorInterleave0(infoPtr, pCurs)))
return NULL;
if (!(mem = calloc(1, size))) {
free(mem2);
return NULL;
}
/* 1 bit interleave */
DstS = mem2;
DstM = DstS + (size >> 1);
pntr = mem;
count = size;
while (count) {
*pntr++ = ((*DstS & 0x01)) | ((*DstM & 0x01) << 1) |
((*DstS & 0x02) << 1) | ((*DstM & 0x02) << 2) |
((*DstS & 0x04) << 2) | ((*DstM & 0x04) << 3) |
((*DstS & 0x08) << 3) | ((*DstM & 0x08) << 4);
*pntr++ = ((*DstS & 0x10) >> 4) | ((*DstM & 0x10) >> 3) |
((*DstS & 0x20) >> 3) | ((*DstM & 0x20) >> 2) |
((*DstS & 0x40) >> 2) | ((*DstM & 0x40) >> 1) |
((*DstS & 0x80) >> 1) | ((*DstM & 0x80));
DstS++;
DstM++;
count -= 2;
}
/* Free the uninterleaved cursor */
free(mem2);
return mem;
}
static unsigned char *
RealizeCursorInterleave8(xf86CursorInfoPtr infoPtr, CursorPtr pCurs)
{
unsigned char *DstS, *DstM;
unsigned char *pntr;
unsigned char *mem, *mem2;
int count;
int size = (infoPtr->MaxWidth * infoPtr->MaxHeight) >> 2;
/* Realize the cursor without interleaving */
if (!(mem2 = RealizeCursorInterleave0(infoPtr, pCurs)))
return NULL;
if (!(mem = calloc(1, size))) {
free(mem2);
return NULL;
}
/* 8 bit interleave */
DstS = mem2;
DstM = DstS + (size >> 1);
pntr = mem;
count = size;
while (count) {
*pntr++ = *DstS++;
*pntr++ = *DstM++;
count -= 2;
}
/* Free the uninterleaved cursor */
free(mem2);
return mem;
}
static unsigned char *
RealizeCursorInterleave16(xf86CursorInfoPtr infoPtr, CursorPtr pCurs)
{
unsigned short *DstS, *DstM;
unsigned short *pntr;
unsigned char *mem, *mem2;
int count;
int size = (infoPtr->MaxWidth * infoPtr->MaxHeight) >> 2;
/* Realize the cursor without interleaving */
if (!(mem2 = RealizeCursorInterleave0(infoPtr, pCurs)))
return NULL;
if (!(mem = calloc(1, size))) {
free(mem2);
return NULL;
}
/* 16 bit interleave */
DstS = (void *) mem2;
DstM = DstS + (size >> 2);
pntr = (void *) mem;
count = (size >> 1);
while (count) {
*pntr++ = *DstS++;
*pntr++ = *DstM++;
count -= 2;
}
/* Free the uninterleaved cursor */
free(mem2);
return mem;
}
static unsigned char *
RealizeCursorInterleave32(xf86CursorInfoPtr infoPtr, CursorPtr pCurs)
{
CARD32 *DstS, *DstM;
CARD32 *pntr;
unsigned char *mem, *mem2;
int count;
int size = (infoPtr->MaxWidth * infoPtr->MaxHeight) >> 2;
/* Realize the cursor without interleaving */
if (!(mem2 = RealizeCursorInterleave0(infoPtr, pCurs)))
return NULL;
if (!(mem = calloc(1, size))) {
free(mem2);
return NULL;
}
/* 32 bit interleave */
DstS = (void *) mem2;
DstM = DstS + (size >> 3);
pntr = (void *) mem;
count = (size >> 2);
while (count) {
*pntr++ = *DstS++;
*pntr++ = *DstM++;
count -= 2;
}
/* Free the uninterleaved cursor */
free(mem2);
return mem;
}
static unsigned char *
RealizeCursorInterleave64(xf86CursorInfoPtr infoPtr, CursorPtr pCurs)
{
CARD32 *DstS, *DstM;
CARD32 *pntr;
unsigned char *mem, *mem2;
int count;
int size = (infoPtr->MaxWidth * infoPtr->MaxHeight) >> 2;
/* Realize the cursor without interleaving */
if (!(mem2 = RealizeCursorInterleave0(infoPtr, pCurs)))
return NULL;
if (!(mem = calloc(1, size))) {
free(mem2);
return NULL;
}
/* 64 bit interleave */
DstS = (void *) mem2;
DstM = DstS + (size >> 3);
pntr = (void *) mem;
count = (size >> 2);
while (count) {
*pntr++ = *DstS++;
*pntr++ = *DstS++;
*pntr++ = *DstM++;
*pntr++ = *DstM++;
count -= 4;
}
/* Free the uninterleaved cursor */
free(mem2);
return mem;
}
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