Client Independent Server Side Scaling is now supported

Both PalmVNC and UltraVNC SetScale messages are supported
pull/1/head
steven_carr 17 years ago
parent afa9fae024
commit 2670641432

@ -1,3 +1,7 @@
2006-05-03 Steven Carr <scarr@jsa-usa.com>
* Server Side Scaling is now supported in libvncserver
Both PalmVNC and UltraVNC SetScale messages are supported
2006-05-02 Steven Carr <scarr@jsa-usa.com>
* Ultra Encoding added. Tested against UltraVNC V1.01
* libvncclient/rfbproto.c CopyRectangle() BPP!=8 bug fixed.

@ -19,7 +19,7 @@ include_HEADERS=../rfb/rfb.h ../rfb/rfbconfig.h ../rfb/rfbint.h \
../rfb/rfbproto.h ../rfb/keysym.h ../rfb/rfbregion.h ../rfb/rfbclient.h
noinst_HEADERS=d3des.h ../rfb/default8x16.h zrleoutstream.h \
zrlepalettehelper.h zrletypes.h private.h minilzo.h lzoconf.h \
zrlepalettehelper.h zrletypes.h private.h minilzo.h lzoconf.h scale.h \
$(TIGHTVNCFILETRANSFERHDRS)
EXTRA_DIST=tableinit24.c tableinittctemplate.c tabletranstemplate.c \
@ -36,7 +36,7 @@ endif
LIB_SRCS = main.c rfbserver.c rfbregion.c auth.c sockets.c \
stats.c corre.c hextile.c rre.c translate.c cutpaste.c \
httpd.c cursor.c font.c \
draw.c selbox.c d3des.c vncauth.c cargs.c minilzo.c ultra.c \
draw.c selbox.c d3des.c vncauth.c cargs.c minilzo.c ultra.c scale.c \
$(ZLIBSRCS) $(JPEGSRCS) $(TIGHTVNCFILETRANSFERSRCS)
libvncserver_a_SOURCES=$(LIB_SRCS)

@ -97,10 +97,10 @@ rfbSendSmallRectEncodingCoRRE(rfbClientPtr cl,
rfbRREHeader hdr;
int nSubrects;
int i;
char *fbptr = (cl->screen->frameBuffer + (cl->screen->paddedWidthInBytes * y)
+ (x * (cl->screen->bitsPerPixel / 8)));
char *fbptr = (cl->scaledScreen->frameBuffer + (cl->scaledScreen->paddedWidthInBytes * y)
+ (x * (cl->scaledScreen->bitsPerPixel / 8)));
int maxRawSize = (cl->screen->width * cl->screen->height
int maxRawSize = (cl->scaledScreen->width * cl->scaledScreen->height
* (cl->format.bitsPerPixel / 8));
if (rreBeforeBufSize < maxRawSize) {
@ -121,7 +121,7 @@ rfbSendSmallRectEncodingCoRRE(rfbClientPtr cl,
(*cl->translateFn)(cl->translateLookupTable,&(cl->screen->serverFormat),
&cl->format, fbptr, rreBeforeBuf,
cl->screen->paddedWidthInBytes, w, h);
cl->scaledScreen->paddedWidthInBytes, w, h);
switch (cl->format.bitsPerPixel) {
case 8:

@ -26,6 +26,8 @@
#include <rfb/rfbregion.h>
#include "private.h"
void rfbScaledScreenUpdate(rfbScreenInfoPtr screen, int x1, int y1, int x2, int y2);
/*
* Send cursor shape either in X-style format or in client pixel format.
*/
@ -42,6 +44,8 @@ rfbSendCursorShape(rfbClientPtr cl)
uint8_t *bitmapData;
uint8_t bitmapByte;
/* TODO: scale the cursor data to the correct size */
pCursor = cl->screen->getCursorPtr(cl);
/*if(!pCursor) return TRUE;*/
@ -461,6 +465,9 @@ void rfbHideCursor(rfbClientPtr cl)
memcpy(s->frameBuffer+(y1+j)*rowstride+x1*bpp,
s->underCursorBuffer+j*x2*bpp,
x2*bpp);
/* Copy to all scaled versions */
rfbScaledScreenUpdate(s, x1, y1, x1+x2, y1+y2);
UNLOCK(s->cursorMutex);
}
@ -619,6 +626,9 @@ void rfbShowCursor(rfbClientPtr cl)
c->richSource+(j+j1)*c->width*bpp+(i+i1)*bpp,bpp);
}
/* Copy to all scaled versions */
rfbScaledScreenUpdate(s, x1, y1, x1+x2, y1+y2);
UNLOCK(s->cursorMutex);
}

@ -126,12 +126,12 @@ sendHextiles##bpp(rfbClientPtr cl, int rx, int ry, int rw, int rh) {
return FALSE; \
} \
\
fbptr = (cl->screen->frameBuffer + (cl->screen->paddedWidthInBytes * y) \
+ (x * (cl->screen->bitsPerPixel / 8))); \
fbptr = (cl->scaledScreen->frameBuffer + (cl->scaledScreen->paddedWidthInBytes * y) \
+ (x * (cl->scaledScreen->bitsPerPixel / 8))); \
\
(*cl->translateFn)(cl->translateLookupTable, &(cl->screen->serverFormat), \
&cl->format, fbptr, (char *)clientPixelData, \
cl->screen->paddedWidthInBytes, w, h); \
cl->scaledScreen->paddedWidthInBytes, w, h); \
\
startUblen = cl->ublen; \
cl->updateBuf[startUblen] = 0; \
@ -175,7 +175,7 @@ sendHextiles##bpp(rfbClientPtr cl, int rx, int ry, int rw, int rh) {
(*cl->translateFn)(cl->translateLookupTable, \
&(cl->screen->serverFormat), &cl->format, fbptr, \
(char *)clientPixelData, \
cl->screen->paddedWidthInBytes, w, h); \
cl->scaledScreen->paddedWidthInBytes, w, h); \
\
memcpy(&cl->updateBuf[cl->ublen], (char *)clientPixelData, \
w * h * (bpp/8)); \

@ -48,9 +48,9 @@ static MUTEX(extMutex);
static int rfbEnableLogging=1;
#ifdef LIBVNCSERVER_WORDS_BIGENDIAN
char rfbEndianTest = 0;
char rfbEndianTest = (1==0);
#else
char rfbEndianTest = -1;
char rfbEndianTest = (1==1);
#endif
/*
@ -407,6 +407,7 @@ void rfbMarkRegionAsModified(rfbScreenInfoPtr screen,sraRegionPtr modRegion)
rfbReleaseClientIterator(iterator);
}
void rfbScaledScreenUpdate(rfbScreenInfoPtr screen, int x1, int y1, int x2, int y2);
void rfbMarkRectAsModified(rfbScreenInfoPtr screen,int x1,int y1,int x2,int y2)
{
sraRegionPtr region;
@ -421,7 +422,10 @@ void rfbMarkRectAsModified(rfbScreenInfoPtr screen,int x1,int y1,int x2,int y2)
if(y1<0) y1=0;
if(y2>screen->height) y2=screen->height;
if(y1==y2) return;
/* update scaled copies for this rectangle */
rfbScaledScreenUpdate(screen,x1,y1,x2,y2);
region = sraRgnCreateRect(x1,y1,x2,y2);
rfbMarkRegionAsModified(screen,region);
sraRgnDestroy(region);
@ -959,6 +963,17 @@ void rfbScreenCleanup(rfbScreenInfoPtr screen)
#ifdef LIBVNCSERVER_HAVE_LIBJPEG
rfbTightCleanup(screen);
#endif
/* free all 'scaled' versions of this screen */
while (screen->scaledScreenNext!=NULL)
{
rfbScreenInfoPtr ptr;
ptr = screen->scaledScreenNext;
screen->scaledScreenNext = ptr->scaledScreenNext;
free(ptr->frameBuffer);
free(ptr);
}
#endif
free(screen);
}

@ -65,6 +65,7 @@
#define DEBUGPROTO(x)
#endif
#include <scale.h>
static void rfbProcessClientProtocolVersion(rfbClientPtr cl);
static void rfbProcessClientNormalMessage(rfbClientPtr cl);
@ -250,6 +251,9 @@ rfbNewTCPOrUDPClient(rfbScreenInfoPtr rfbScreen,
cl->screen = rfbScreen;
cl->sock = sock;
cl->viewOnly = FALSE;
/* setup pseudo scaling */
cl->scaledScreen = rfbScreen;
cl->scaledScreen->scaledScreenRefCount++;
rfbResetStats(cl);
@ -446,6 +450,9 @@ rfbClientConnectionGone(rfbClientPtr cl)
if(cl->sock>0)
close(cl->sock);
if (cl->scaledScreen!=NULL)
cl->scaledScreen->scaledScreenRefCount--;
#ifdef LIBVNCSERVER_HAVE_LIBZ
rfbFreeZrleData(cl);
#endif
@ -711,21 +718,31 @@ rfbProcessClientInitMessage(rfbClientPtr cl)
}
}
/* The values come in based on the scaled screen, we need to convert them to
* values based on the man screen's coordinate system
*/
static rfbBool rectSwapIfLEAndClip(uint16_t* x,uint16_t* y,uint16_t* w,uint16_t* h,
rfbScreenInfoPtr screen)
rfbClientPtr cl)
{
*x=Swap16IfLE(*x);
*y=Swap16IfLE(*y);
*w=Swap16IfLE(*w);
*h=Swap16IfLE(*h);
if(*w>screen->width-*x)
*w=screen->width-*x;
int x1=Swap16IfLE(*x);
int y1=Swap16IfLE(*y);
int w1=Swap16IfLE(*w);
int h1=Swap16IfLE(*h);
rfbScaledCorrection(cl->scaledScreen, cl->screen, &x1, &y1, &w1, &h1, "rectSwapIfLEAndClip");
*x = x1;
*y = y1;
*w = w1;
*h = h1;
if(*w>cl->screen->width-*x)
*w=cl->screen->width-*x;
/* possible underflow */
if(*w>screen->width-*x)
if(*w>cl->screen->width-*x)
return FALSE;
if(*h>screen->height-*y)
*h=screen->height-*y;
if(*h>screen->height-*y)
if(*h>cl->screen->height-*y)
*h=cl->screen->height-*y;
if(*h>cl->screen->height-*y)
return FALSE;
return TRUE;
@ -1062,10 +1079,17 @@ rfbProcessClientNormalMessage(rfbClientPtr cl)
return;
}
if(!rectSwapIfLEAndClip(&msg.fur.x,&msg.fur.y,&msg.fur.w,&msg.fur.h,
cl->screen))
return;
/* The values come in based on the scaled screen, we need to convert them to
* values based on the main screen's coordinate system
*/
if(!rectSwapIfLEAndClip(&msg.fur.x,&msg.fur.y,&msg.fur.w,&msg.fur.h,cl))
{
rfbLog("Warning, ignoring rfbFramebufferUpdateRequest: %dXx%dY-%dWx%dH\n",msg.fur.x, msg.fur.y, msg.fur.w, msg.fur.h);
return;
}
tmpRegion =
sraRgnCreateRect(msg.fur.x,
msg.fur.y,
@ -1142,18 +1166,19 @@ rfbProcessClientNormalMessage(rfbClientPtr cl)
if (msg.pe.buttonMask != cl->lastPtrButtons ||
cl->screen->deferPtrUpdateTime == 0) {
cl->screen->ptrAddEvent(msg.pe.buttonMask,
Swap16IfLE(msg.pe.x), Swap16IfLE(msg.pe.y), cl);
ScaleX(cl->scaledScreen, cl->screen, Swap16IfLE(msg.pe.x)),
ScaleY(cl->scaledScreen, cl->screen, Swap16IfLE(msg.pe.y)),
cl);
cl->lastPtrButtons = msg.pe.buttonMask;
} else {
cl->lastPtrX = Swap16IfLE(msg.pe.x);
cl->lastPtrY = Swap16IfLE(msg.pe.y);
cl->lastPtrX = ScaleX(cl->scaledScreen, cl->screen, Swap16IfLE(msg.pe.x));
cl->lastPtrY = ScaleY(cl->scaledScreen, cl->screen, Swap16IfLE(msg.pe.y));
cl->lastPtrButtons = msg.pe.buttonMask;
}
}
return;
case rfbClientCutText:
if ((n = rfbReadExact(cl, ((char *)&msg) + 1,
@ -1183,6 +1208,23 @@ rfbProcessClientNormalMessage(rfbClientPtr cl)
return;
case rfbPalmVNCSetScaleFactor:
cl->PalmVNC = TRUE;
case rfbSetScale:
if ((n = rfbReadExact(cl, ((char *)&msg) + 1,
sz_rfbSetScaleMsg - 1)) <= 0) {
if (n != 0)
rfbLogPerror("rfbProcessClientNormalMessage: read");
rfbCloseClient(cl);
return;
}
rfbLog("rfbSetScale(%d)\n", msg.ssc.scale);
rfbScalingSetup(cl,cl->screen->width/msg.ssc.scale, cl->screen->height/msg.ssc.scale);
rfbSendNewScaleSize(cl);
return;
default:
{
@ -1245,7 +1287,7 @@ rfbSendFramebufferUpdate(rfbClientPtr cl,
fu->type = rfbFramebufferUpdate;
fu->nRects = Swap16IfLE(1);
cl->ublen = sz_rfbFramebufferUpdateMsg;
if (!rfbSendNewFBSize(cl, cl->screen->width, cl->screen->height)) {
if (!rfbSendNewFBSize(cl, cl->scaledScreen->width, cl->scaledScreen->height)) {
return FALSE;
}
return rfbSendUpdateBuf(cl);
@ -1401,6 +1443,9 @@ rfbSendFramebufferUpdate(rfbClientPtr cl,
int y = rect.y1;
int w = rect.x2 - x;
int h = rect.y2 - y;
/* We need to count the number of rects in the scaled screen */
if (cl->screen!=cl->scaledScreen)
rfbScaledCorrection(cl->screen, cl->scaledScreen, &x, &y, &w, &h, "rfbSendFramebufferUpdate");
int rectsPerRow = (w-1)/cl->correMaxWidth+1;
int rows = (h-1)/cl->correMaxHeight+1;
nUpdateRegionRects += rectsPerRow*rows;
@ -1414,6 +1459,9 @@ rfbSendFramebufferUpdate(rfbClientPtr cl,
int y = rect.y1;
int w = rect.x2 - x;
int h = rect.y2 - y;
/* We need to count the number of rects in the scaled screen */
if (cl->screen!=cl->scaledScreen)
rfbScaledCorrection(cl->screen, cl->scaledScreen, &x, &y, &w, &h, "rfbSendFramebufferUpdate");
nUpdateRegionRects += (((h-1) / (ULTRA_MAX_SIZE( w ) / w)) + 1);
}
sraRgnReleaseIterator(i);
@ -1426,6 +1474,9 @@ rfbSendFramebufferUpdate(rfbClientPtr cl,
int y = rect.y1;
int w = rect.x2 - x;
int h = rect.y2 - y;
/* We need to count the number of rects in the scaled screen */
if (cl->screen!=cl->scaledScreen)
rfbScaledCorrection(cl->screen, cl->scaledScreen, &x, &y, &w, &h, "rfbSendFramebufferUpdate");
nUpdateRegionRects += (((h-1) / (ZLIB_MAX_SIZE( w ) / w)) + 1);
}
sraRgnReleaseIterator(i);
@ -1438,6 +1489,9 @@ rfbSendFramebufferUpdate(rfbClientPtr cl,
int y = rect.y1;
int w = rect.x2 - x;
int h = rect.y2 - y;
/* We need to count the number of rects in the scaled screen */
if (cl->screen!=cl->scaledScreen)
rfbScaledCorrection(cl->screen, cl->scaledScreen, &x, &y, &w, &h, "rfbSendFramebufferUpdate");
int n = rfbNumCodedRectsTight(cl, x, y, w, h);
if (n == 0) {
nUpdateRegionRects = 0xFFFF;
@ -1509,6 +1563,10 @@ rfbSendFramebufferUpdate(rfbClientPtr cl,
int w = rect.x2 - x;
int h = rect.y2 - y;
/* We need to count the number of rects in the scaled screen */
if (cl->screen!=cl->scaledScreen)
rfbScaledCorrection(cl->screen, cl->scaledScreen, &x, &y, &w, &h, "rfbSendFramebufferUpdate");
cl->rawBytesEquivalent += (sz_rfbFramebufferUpdateRectHeader
+ w * (cl->format.bitsPerPixel / 8) * h);
@ -1598,12 +1656,19 @@ rfbSendCopyRegion(rfbClientPtr cl,
/* printf("copyrect: "); sraRgnPrint(reg); putchar('\n');fflush(stdout); */
i = sraRgnGetReverseIterator(reg,dx>0,dy>0);
/* correct for the scale of the screen */
dx = ScaleX(cl->screen, cl->scaledScreen, dx);
dy = ScaleX(cl->screen, cl->scaledScreen, dy);
while(sraRgnIteratorNext(i,&rect1)) {
x = rect1.x1;
y = rect1.y1;
w = rect1.x2 - x;
h = rect1.y2 - y;
/* correct for scaling (if necessary) */
rfbScaledCorrection(cl->screen, cl->scaledScreen, &x, &y, &w, &h, "copyrect");
rect.r.x = Swap16IfLE(x);
rect.r.y = Swap16IfLE(y);
rect.r.w = Swap16IfLE(w);
@ -1644,8 +1709,8 @@ rfbSendRectEncodingRaw(rfbClientPtr cl,
rfbFramebufferUpdateRectHeader rect;
int nlines;
int bytesPerLine = w * (cl->format.bitsPerPixel / 8);
char *fbptr = (cl->screen->frameBuffer + (cl->screen->paddedWidthInBytes * y)
+ (x * (cl->screen->bitsPerPixel / 8)));
char *fbptr = (cl->scaledScreen->frameBuffer + (cl->scaledScreen->paddedWidthInBytes * y)
+ (x * (cl->scaledScreen->bitsPerPixel / 8)));
/* Flush the buffer to guarantee correct alignment for translateFn(). */
if (cl->ublen > 0) {
@ -1675,7 +1740,7 @@ rfbSendRectEncodingRaw(rfbClientPtr cl,
(*cl->translateFn)(cl->translateLookupTable,
&(cl->screen->serverFormat),
&cl->format, fbptr, &cl->updateBuf[cl->ublen],
cl->screen->paddedWidthInBytes, w, nlines);
cl->scaledScreen->paddedWidthInBytes, w, nlines);
cl->ublen += nlines * bytesPerLine;
h -= nlines;
@ -1688,7 +1753,7 @@ rfbSendRectEncodingRaw(rfbClientPtr cl,
if (!rfbSendUpdateBuf(cl))
return FALSE;
fbptr += (cl->screen->paddedWidthInBytes * nlines);
fbptr += (cl->scaledScreen->paddedWidthInBytes * nlines);
nlines = (UPDATE_BUF_SIZE - cl->ublen) / bytesPerLine;
if (nlines == 0) {
@ -1752,6 +1817,11 @@ rfbSendNewFBSize(rfbClientPtr cl,
return FALSE;
}
if (cl->PalmVNC==TRUE)
rfbLog("Sending a rfbEncodingNewFBSize in response to a PalmVNC style frameuffer resize request (%dx%d)\n", w, h);
else
rfbLog("Sending a rfbEncodingNewFBSize in response to a UltraVNC style frameuffer resize request (%dx%d)\n", w, h);
rect.encoding = Swap32IfLE(rfbEncodingNewFBSize);
rect.r.x = 0;
rect.r.y = 0;

@ -63,10 +63,10 @@ rfbSendRectEncodingRRE(rfbClientPtr cl,
rfbRREHeader hdr;
int nSubrects;
int i;
char *fbptr = (cl->screen->frameBuffer + (cl->screen->paddedWidthInBytes * y)
+ (x * (cl->screen->bitsPerPixel / 8)));
char *fbptr = (cl->scaledScreen->frameBuffer + (cl->scaledScreen->paddedWidthInBytes * y)
+ (x * (cl->scaledScreen->bitsPerPixel / 8)));
int maxRawSize = (cl->screen->width * cl->screen->height
int maxRawSize = (cl->scaledScreen->width * cl->scaledScreen->height
* (cl->format.bitsPerPixel / 8));
if (rreBeforeBufSize < maxRawSize) {
@ -88,7 +88,7 @@ rfbSendRectEncodingRRE(rfbClientPtr cl,
(*cl->translateFn)(cl->translateLookupTable,
&(cl->screen->serverFormat),
&cl->format, fbptr, rreBeforeBuf,
cl->screen->paddedWidthInBytes, w, h);
cl->scaledScreen->paddedWidthInBytes, w, h);
switch (cl->format.bitsPerPixel) {
case 8:

@ -0,0 +1,411 @@
/*
* scale.c - deal with server-side scaling.
*/
/*
* Copyright (C) 2005 Rohit Kumar, Johannes E. Schindelin
* Copyright (C) 2002 RealVNC Ltd.
* OSXvnc Copyright (C) 2001 Dan McGuirk <mcguirk@incompleteness.net>.
* Original Xvnc code Copyright (C) 1999 AT&T Laboratories Cambridge.
* All Rights Reserved.
*
* This is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
* USA.
*/
#ifdef __STRICT_ANSI__
#define _BSD_SOURCE
#endif
#include <string.h>
#include <rfb/rfb.h>
#include <rfb/rfbregion.h>
#include "private.h"
#ifdef LIBVNCSERVER_HAVE_FCNTL_H
#include <fcntl.h>
#endif
#ifdef WIN32
#define write(sock,buf,len) send(sock,buf,len,0)
#else
#ifdef LIBVNCSERVER_HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <pwd.h>
#ifdef LIBVNCSERVER_HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifdef LIBVNCSERVER_HAVE_NETINET_IN_H
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <arpa/inet.h>
#endif
#endif
#ifdef CORBA
#include <vncserverctrl.h>
#endif
#ifdef DEBUGPROTO
#undef DEBUGPROTO
#define DEBUGPROTO(x) x
#else
#define DEBUGPROTO(x)
#endif
/****************************/
#include <math.h>
int ScaleX(rfbScreenInfoPtr from, rfbScreenInfoPtr to, int x)
{
if ((from==to) || (from==NULL) || (to==NULL)) return x;
return ((int)(((double) x / (double)from->width) * (double)to->width ));
}
int ScaleY(rfbScreenInfoPtr from, rfbScreenInfoPtr to, int y)
{
if ((from==to) || (from==NULL) || (to==NULL)) return y;
return ((int)(((double) y / (double)from->height) * (double)to->height ));
}
/* So, all of the encodings point to the ->screen->frameBuffer,
* We need to change this!
*/
void rfbScaledCorrection(rfbScreenInfoPtr from, rfbScreenInfoPtr to, int *x, int *y, int *w, int *h, char *function)
{
double x1,y1,w1,h1, x2, y2, w2, h2;
double scaleW = ((double) to->width) / ((double) from->width);
double scaleH = ((double) to->height) / ((double) from->height);
/*
* rfbLog("rfbScaledCorrection(%p -> %p, %dx%d->%dx%d (%dXx%dY-%dWx%dH)\n",
* from, to, from->width, from->height, to->width, to->height, *x, *y, *w, *h);
*/
/* If it's the original framebuffer... */
if (from==to) return;
x1 = ((double) *x) * scaleW;
y1 = ((double) *y) * scaleH;
w1 = ((double) *w) * scaleW;
h1 = ((double) *h) * scaleH;
/*cast from double to int is same as "*x = floor(x1);" */
x2 = floor(x1);
y2 = floor(y1);
/* include into W and H the jitter of scaling X and Y */
w2 = ceil(w1 + ( x1 - x2 ));
h2 = ceil(h1 + ( y1 - y2 ));
/*
* rfbLog("%s (%dXx%dY-%dWx%dH -> %fXx%fY-%fWx%fH) {%dWx%dH -> %dWx%dH}\n",
* function, *x, *y, *w, *h, x2, y2, w2, h2,
* from->width, from->height, to->width, to->height);
*/
/* simulate ceil() without math library */
*x = (int)x2;
*y = (int)y2;
*w = (int)w2;
*h = (int)h2;
/* Small changes for a thumbnail may be scaled to zero */
if (*w==0) *w++;
if (*h==0) *h++;
/* scaling from small to big may overstep the size a bit */
if (*x+*w > to->width) *w=to->width - *x;
if (*y+*h > to->height) *h=to->height - *y;
}
void rfbScaledScreenUpdateRect(rfbScreenInfoPtr screen, rfbScreenInfoPtr ptr, int x0, int y0, int w0, int h0)
{
int x,y,w,v,z;
int x1, y1, w1, h1;
int bitsPerPixel, bytesPerPixel, bytesPerLine, areaX, areaY, area2;
unsigned char *srcptr, *dstptr;
/* Nothing to do!!! */
if (screen==ptr) return;
x1 = x0;
y1 = y0;
w1 = w0;
h1 = h0;
rfbScaledCorrection(screen, ptr, &x1, &y1, &w1, &h1, "rfbScaledScreenUpdateRect");
bitsPerPixel = screen->bitsPerPixel;
bytesPerPixel = bitsPerPixel / 8;
bytesPerLine = w1 * bytesPerPixel;
srcptr = (unsigned char *)(screen->frameBuffer +
(y0 * screen->paddedWidthInBytes + x0 * bytesPerPixel));
dstptr = (unsigned char *)(ptr->frameBuffer +
( y1 * ptr->paddedWidthInBytes + x1 * bytesPerPixel));
/* The area of the source framebuffer for each destination pixel */
areaX = ScaleX(ptr,screen,1);
areaY = ScaleY(ptr,screen,1);
area2 = areaX*areaY;
/* Ensure that we do not go out of bounds */
if ((x1+w1) > (ptr->width))
{
if (x1==0) w1=ptr->width; else x1 = ptr->width - w1;
}
if ((y1+h1) > (ptr->height))
{
if (y1==0) h1=ptr->height; else y1 = ptr->height - h1;
}
/*
* rfbLog("rfbScaledScreenUpdateRect(%dXx%dY-%dWx%dH -> %dXx%dY-%dWx%dH <%dx%d>) {%dWx%dH -> %dWx%dH} 0x%p\n",
* x0, y0, w0, h0, x1, y1, w1, h1, areaX, areaY,
* screen->width, screen->height, ptr->width, ptr->height, ptr->frameBuffer);
*/
if (screen->serverFormat.trueColour) { /* Blend neighbouring pixels together */
unsigned char *srcptr2;
unsigned long pixel_value, red, green, blue;
unsigned int redShift = screen->serverFormat.redShift;
unsigned int greenShift = screen->serverFormat.greenShift;
unsigned int blueShift = screen->serverFormat.blueShift;
unsigned long redMax = screen->serverFormat.redMax;
unsigned long greenMax = screen->serverFormat.greenMax;
unsigned long blueMax = screen->serverFormat.blueMax;
/* for each *destination* pixel... */
for (y = 0; y < h1; y++) {
for (x = 0; x < w1; x++) {
red = green = blue = 0;
/* Get the totals for rgb from the source grid... */
for (w = 0; w < areaX; w++) {
for (v = 0; v < areaY; v++) {
srcptr2 = &srcptr[(((x * areaX) + v) * bytesPerPixel) +
(w * screen->paddedWidthInBytes)];
pixel_value = 0;
switch (bytesPerPixel) {
case 4: pixel_value = *((unsigned int *)srcptr2); break;
case 2: pixel_value = *((unsigned short *)srcptr2); break;
case 1: pixel_value = *((unsigned char *)srcptr2); break;
default:
/* fixme: endianess problem? */
for (z = 0; z < bytesPerPixel; z++)
pixel_value += (srcptr2[z] << (8 * z));
break;
}
//srcptr2 += bytesPerPixel;
red += ((pixel_value >> redShift) & redMax);
green += ((pixel_value >> greenShift) & greenMax);
blue += ((pixel_value >> blueShift) & blueMax);
}
}
/* We now have a total for all of the colors, find the average! */
red /= area2;
green /= area2;
blue /= area2;
/* Stuff the new value back into memory */
pixel_value = ((red & redMax) << redShift) | ((green & greenMax) << greenShift) | ((blue & blueMax) << blueShift);
switch (bytesPerPixel) {
case 4: *((unsigned int *)dstptr) = (unsigned int) pixel_value; break;
case 2: *((unsigned short *)dstptr) = (unsigned short) pixel_value; break;
case 1: *((unsigned char *)dstptr) = (unsigned char) pixel_value; break;
default:
/* fixme: endianess problem? */
for (z = 0; z < bytesPerPixel; z++)
dstptr[z]=(pixel_value >> (8 * z)) & 0xff;
break;
}
dstptr += bytesPerPixel;
}
srcptr += (screen->paddedWidthInBytes * areaY);
dstptr += (ptr->paddedWidthInBytes - bytesPerLine);
}
} else
{ /* Not truecolour, so we can't blend. Just use the top-left pixel instead */
for (y = y1; y < (y1+h1); y++) {
for (x = x1; x < (x1+w1); x++)
memcpy (&ptr->frameBuffer[(y *ptr->paddedWidthInBytes) + (x * bytesPerPixel)],
&screen->frameBuffer[(y * areaY * screen->paddedWidthInBytes) + (x *areaX * bytesPerPixel)], bytesPerPixel);
}
}
}
void rfbScaledScreenUpdate(rfbScreenInfoPtr screen, int x1, int y1, int x2, int y2)
{
/* ok, now the task is to update each and every scaled version of the framebuffer
* and we only have to do this for this specific changed rectangle!
*/
rfbScreenInfoPtr ptr;
int count=0;
/* We don't point to cl->screen as it is the original */
for (ptr=screen->scaledScreenNext;ptr!=NULL;ptr=ptr->scaledScreenNext)
{
/* Only update if it has active clients... */
if (ptr->scaledScreenRefCount>0)
{
rfbScaledScreenUpdateRect(screen, ptr, x1, y1, x2-x1, y2-y1);
count++;
}
}
}
/* Create a new scaled version of the framebuffer */
rfbScreenInfoPtr rfbScaledScreenAllocate(rfbClientPtr cl, int width, int height)
{
rfbScreenInfoPtr ptr;
ptr = malloc(sizeof(rfbScreenInfo));
if (ptr!=NULL)
{
/* copy *everything* (we don't use most of it, but just in case) */
memcpy(ptr, cl->screen, sizeof(rfbScreenInfo));
ptr->width = width;
ptr->height = height;
ptr->paddedWidthInBytes = (ptr->bitsPerPixel/8)*ptr->width;
/* Need to by multiples of 4 for Sparc systems */
ptr->paddedWidthInBytes += (ptr->paddedWidthInBytes % 4);
/* Reset the reference count to 0! */
ptr->scaledScreenRefCount = 0;
ptr->sizeInBytes = ptr->paddedWidthInBytes * ptr->height;
ptr->serverFormat = cl->screen->serverFormat;
ptr->frameBuffer = malloc(ptr->sizeInBytes);
if (ptr->frameBuffer!=NULL)
{
/* Reset to a known condition: scale the entire framebuffer */
rfbScaledScreenUpdateRect(cl->screen, ptr, 0, 0, cl->screen->width, cl->screen->height);
/* Now, insert into the chain */
LOCK(cl->updateMutex);
ptr->scaledScreenNext = cl->screen->scaledScreenNext;
cl->screen->scaledScreenNext = ptr;
UNLOCK(cl->updateMutex);
}
else
{
/* Failed to malloc the new frameBuffer, cleanup */
free(ptr);
ptr=NULL;
}
}
return ptr;
}
/* Find an active scaled version of the framebuffer
* TODO: implement a refcount per scaled screen to prevent
* unreferenced scaled screens from hanging around
*/
rfbScreenInfoPtr rfbScalingFind(rfbClientPtr cl, int width, int height)
{
rfbScreenInfoPtr ptr;
/* include the original in the search (ie: fine 1:1 scaled version of the frameBuffer) */
for (ptr=cl->screen; ptr!=NULL; ptr=ptr->scaledScreenNext)
{
if ((ptr->width==width) && (ptr->height==height))
return ptr;
}
return NULL;
}
/* Future needs "scale to 320x240, as that's the client's screen size */
void rfbScalingSetup(rfbClientPtr cl, int width, int height)
{
rfbScreenInfoPtr ptr;
ptr = rfbScalingFind(cl,width,height);
if (ptr==NULL)
ptr = rfbScaledScreenAllocate(cl,width,height);
/* Now, there is a new screen available (if ptr is not NULL) */
if (ptr!=NULL)
{
/* Update it! */
if (ptr->scaledScreenRefCount<1)
rfbScaledScreenUpdateRect(cl->screen, ptr, 0, 0, cl->screen->width, cl->screen->height);
/*
* rfbLog("Taking one from %dx%d-%d and adding it to %dx%d-%d\n",
* cl->scaledScreen->width, cl->scaledScreen->height,
* cl->scaledScreen->scaledScreenRefCount,
* ptr->width, ptr->height, ptr->scaledScreenRefCount);
*/
LOCK(cl->updateMutex);
cl->scaledScreen->scaledScreenRefCount--;
ptr->scaledScreenRefCount++;
cl->scaledScreen=ptr;
cl->newFBSizePending = TRUE;
UNLOCK(cl->updateMutex);
rfbLog("Scaling to %dx%d (refcount=%d)\n",width,height,ptr->scaledScreenRefCount);
}
else
rfbLog("Scaling to %dx%d failed, leaving things alone\n",width,height);
}
int rfbSendNewScaleSize(rfbClientPtr cl)
{
/* if the client supports newFBsize Encoding, use it */
if (cl->useNewFBSize && cl->newFBSizePending)
return FALSE;
LOCK(cl->updateMutex);
cl->newFBSizePending = FALSE;
UNLOCK(cl->updateMutex);
if (cl->PalmVNC==TRUE)
{
rfbPalmVNCReSizeFrameBufferMsg pmsg;
pmsg.type = rfbPalmVNCReSizeFrameBuffer;
pmsg.pad1 = 0;
pmsg.desktop_w = Swap16IfLE(cl->screen->width);
pmsg.desktop_h = Swap16IfLE(cl->screen->height);
pmsg.buffer_w = Swap16IfLE(cl->scaledScreen->width);
pmsg.buffer_h = Swap16IfLE(cl->scaledScreen->height);
pmsg.pad2 = 0;
rfbLog("Sending a response to a PalmVNC style frameuffer resize event (%dx%d)\n", cl->scaledScreen->width, cl->scaledScreen->height);
if (rfbWriteExact(cl, (char *)&pmsg, sz_rfbPalmVNCReSizeFrameBufferMsg) < 0) {
rfbLogPerror("rfbNewClient: write");
rfbCloseClient(cl);
rfbClientConnectionGone(cl);
return FALSE;
}
}
else
{
rfbResizeFrameBufferMsg rmsg;
rmsg.type = rfbResizeFrameBuffer;
rmsg.pad1=0;
rmsg.framebufferWidth = Swap16IfLE(cl->scaledScreen->width);
rmsg.framebufferHeigth = Swap16IfLE(cl->scaledScreen->height);
rfbLog("Sending a response to a UltraVNC style frameuffer resize event (%dx%d)\n", cl->scaledScreen->width, cl->scaledScreen->height);
if (rfbWriteExact(cl, (char *)&rmsg, sz_rfbResizeFrameBufferMsg) < 0) {
rfbLogPerror("rfbNewClient: write");
rfbCloseClient(cl);
rfbClientConnectionGone(cl);
return FALSE;
}
}
return TRUE;
}
/****************************/

@ -0,0 +1,10 @@
int ScaleX(rfbScreenInfoPtr from, rfbScreenInfoPtr to, int x);
int ScaleY(rfbScreenInfoPtr from, rfbScreenInfoPtr to, int y);
void rfbScaledCorrection(rfbScreenInfoPtr from, rfbScreenInfoPtr to, int *x, int *y, int *w, int *h, char *function);
void rfbScaledScreenUpdateRect(rfbScreenInfoPtr screen, rfbScreenInfoPtr ptr, int x0, int y0, int w0, int h0);
void rfbScaledScreenUpdate(rfbScreenInfoPtr screen, int x1, int y1, int x2, int y2);
rfbScreenInfoPtr rfbScaledScreenAllocate(rfbClientPtr cl, int width, int height);
rfbScreenInfoPtr rfbScalingFind(rfbClientPtr cl, int width, int height);
void rfbScalingSetup(rfbClientPtr cl, int width, int height);
int rfbSendNewScaleSize(rfbClientPtr cl);

@ -28,7 +28,7 @@
static const char* encNames[] = {
"raw", "copyRect", "RRE", "[encoding 3]", "CoRRE", "hextile",
"zlib", "tight", "[encoding 8]", "[encoding 9]", "[encoding 10]",
"zlib", "tight", "[encoding 8]", "ultra", "[encoding 10]",
"[encoding 11]", "[encoding 12]", "[encoding 13]", "[encoding 14]",
"[encoding 15]",
"ZRLE", "[encoding 17]", "[encoding 18]", "[encoding 19]", "[encoding 20]"

@ -332,13 +332,13 @@ rfbSendRectEncodingTight(rfbClientPtr cl,
if (!SendTightHeader(cl, x_best, y_best, w_best, h_best))
return FALSE;
fbptr = (cl->screen->frameBuffer +
(cl->screen->paddedWidthInBytes * y_best) +
(x_best * (cl->screen->bitsPerPixel / 8)));
fbptr = (cl->scaledScreen->frameBuffer +
(cl->scaledScreen->paddedWidthInBytes * y_best) +
(x_best * (cl->scaledScreen->bitsPerPixel / 8)));
(*cl->translateFn)(cl->translateLookupTable, &cl->screen->serverFormat,
&cl->format, fbptr, tightBeforeBuf,
cl->screen->paddedWidthInBytes, 1, 1);
cl->scaledScreen->paddedWidthInBytes, 1, 1);
if (!SendSolidRect(cl))
return FALSE;
@ -486,7 +486,7 @@ CheckSolidTile##bpp(rfbClientPtr cl, int x, int y, int w, int h, \
int dx, dy; \
\
fbptr = (uint##bpp##_t *) \
&cl->screen->frameBuffer[y * cl->screen->paddedWidthInBytes + x * (bpp/8)]; \
&cl->scaledScreen->frameBuffer[y * cl->scaledScreen->paddedWidthInBytes + x * (bpp/8)]; \
\
colorValue = *fbptr; \
if (needSameColor && (uint32_t)colorValue != *colorPtr) \
@ -497,7 +497,7 @@ CheckSolidTile##bpp(rfbClientPtr cl, int x, int y, int w, int h, \
if (colorValue != fbptr[dx]) \
return FALSE; \
} \
fbptr = (uint##bpp##_t *)((uint8_t *)fbptr + cl->screen->paddedWidthInBytes); \
fbptr = (uint##bpp##_t *)((uint8_t *)fbptr + cl->scaledScreen->paddedWidthInBytes); \
} \
\
*colorPtr = (uint32_t)colorValue; \
@ -580,12 +580,12 @@ SendSubrect(rfbClientPtr cl,
if (!SendTightHeader(cl, x, y, w, h))
return FALSE;
fbptr = (cl->screen->frameBuffer + (cl->screen->paddedWidthInBytes * y)
+ (x * (cl->screen->bitsPerPixel / 8)));
fbptr = (cl->scaledScreen->frameBuffer + (cl->scaledScreen->paddedWidthInBytes * y)
+ (x * (cl->scaledScreen->bitsPerPixel / 8)));
(*cl->translateFn)(cl->translateLookupTable, &cl->screen->serverFormat,
&cl->format, fbptr, tightBeforeBuf,
cl->screen->paddedWidthInBytes, w, h);
cl->scaledScreen->paddedWidthInBytes, w, h);
paletteMaxColors = w * h / tightConf[compressLevel].idxMaxColorsDivisor;
if ( paletteMaxColors < 2 &&
@ -1723,7 +1723,7 @@ PrepareRowForJpeg24(rfbClientPtr cl,
uint32_t pix;
fbptr = (uint32_t *)
&cl->screen->frameBuffer[y * cl->screen->paddedWidthInBytes + x * 4];
&cl->scaledScreen->frameBuffer[y * cl->scaledScreen->paddedWidthInBytes + x * 4];
while (count--) {
pix = *fbptr++;
@ -1742,7 +1742,7 @@ PrepareRowForJpeg##bpp(rfbClientPtr cl, uint8_t *dst, int x, int y, int count) {
int inRed, inGreen, inBlue; \
\
fbptr = (uint##bpp##_t *) \
&cl->screen->frameBuffer[y * cl->screen->paddedWidthInBytes + \
&cl->scaledScreen->frameBuffer[y * cl->scaledScreen->paddedWidthInBytes + \
x * (bpp / 8)]; \
\
while (count--) { \

@ -43,8 +43,8 @@ rfbSendOneRectEncodingUltra(rfbClientPtr cl,
rfbZlibHeader hdr;
int deflateResult;
int i;
char *fbptr = (cl->screen->frameBuffer + (cl->screen->paddedWidthInBytes * y)
+ (x * (cl->screen->bitsPerPixel / 8)));
char *fbptr = (cl->scaledScreen->frameBuffer + (cl->scaledScreen->paddedWidthInBytes * y)
+ (x * (cl->scaledScreen->bitsPerPixel / 8)));
int maxRawSize;
int maxCompSize;
@ -78,7 +78,7 @@ rfbSendOneRectEncodingUltra(rfbClientPtr cl,
*/
(*cl->translateFn)(cl->translateLookupTable, &cl->screen->serverFormat,
&cl->format, fbptr, lzoBeforeBuf,
cl->screen->paddedWidthInBytes, w, h);
cl->scaledScreen->paddedWidthInBytes, w, h);
if ( cl->compStreamInitedLZO == FALSE ) {
cl->compStreamInitedLZO = TRUE;

@ -64,13 +64,13 @@ rfbSendOneRectEncodingZlib(rfbClientPtr cl,
int deflateResult;
int previousOut;
int i;
char *fbptr = (cl->screen->frameBuffer + (cl->screen->paddedWidthInBytes * y)
+ (x * (cl->screen->bitsPerPixel / 8)));
char *fbptr = (cl->scaledScreen->frameBuffer + (cl->scaledScreen->paddedWidthInBytes * y)
+ (x * (cl->scaledScreen->bitsPerPixel / 8)));
int maxRawSize;
int maxCompSize;
maxRawSize = (cl->screen->width * cl->screen->height
maxRawSize = (cl->scaledScreen->width * cl->scaledScreen->height
* (cl->format.bitsPerPixel / 8));
if (zlibBeforeBufSize < maxRawSize) {
@ -84,7 +84,7 @@ rfbSendOneRectEncodingZlib(rfbClientPtr cl,
/* zlib compression is not useful for very small data sets.
* So, we just send these raw without any compression.
*/
if (( w * h * (cl->screen->bitsPerPixel / 8)) <
if (( w * h * (cl->scaledScreen->bitsPerPixel / 8)) <
VNC_ENCODE_ZLIB_MIN_COMP_SIZE ) {
int result;
@ -126,7 +126,7 @@ rfbSendOneRectEncodingZlib(rfbClientPtr cl,
*/
(*cl->translateFn)(cl->translateLookupTable, &cl->screen->serverFormat,
&cl->format, fbptr, zlibBeforeBuf,
cl->screen->paddedWidthInBytes, w, h);
cl->scaledScreen->paddedWidthInBytes, w, h);
cl->compStream.next_in = ( Bytef * )zlibBeforeBuf;
cl->compStream.avail_in = w * h * (cl->format.bitsPerPixel / 8);

@ -30,13 +30,13 @@
#define GET_IMAGE_INTO_BUF(tx,ty,tw,th,buf) \
{ char *fbptr = (cl->screen->frameBuffer \
+ (cl->screen->paddedWidthInBytes * ty) \
+ (tx * (cl->screen->bitsPerPixel / 8))); \
{ char *fbptr = (cl->scaledScreen->frameBuffer \
+ (cl->scaledScreen->paddedWidthInBytes * ty) \
+ (tx * (cl->scaledScreen->bitsPerPixel / 8))); \
\
(*cl->translateFn)(cl->translateLookupTable, &cl->screen->serverFormat,\
&cl->format, fbptr, (char*)buf, \
cl->screen->paddedWidthInBytes, tw, th); }
cl->scaledScreen->paddedWidthInBytes, tw, th); }
#define EXTRA_ARGS , rfbClientPtr cl

@ -201,6 +201,10 @@ typedef struct _rfbExtensionData {
typedef struct _rfbScreenInfo
{
/* this structure has children that are scaled versions of this screen */
struct _rfbScreenInfo *scaledScreenNext;
int scaledScreenRefCount;
int width;
int paddedWidthInBytes;
int height;
@ -348,6 +352,12 @@ typedef struct _rfbClientRec {
/* back pointer to the screen */
rfbScreenInfoPtr screen;
/* points to a scaled version of the screen buffer in cl->scaledScreenList */
rfbScreenInfoPtr scaledScreen;
/* how did the client tell us it wanted the screen changed? Ultra style or palm style? */
rfbBool PalmVNC;
/* private data. You should put any application client specific data
* into a struct and let clientData point to it. Don't forget to

Loading…
Cancel
Save