434 lines
18 KiB
C++
434 lines
18 KiB
C++
#if __ORCAC__
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#pragma lint -1
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#pragma noroot
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segment "VNCview GS";
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#endif
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#include <window.h>
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#include <quickdraw.h>
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#include <qdaux.h>
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#include <desk.h>
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#include <memory.h>
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#include <resources.h>
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#include <tcpip.h>
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#include <menu.h>
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#include <control.h>
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#include <misctool.h>
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#include <scrap.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <event.h>
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#include <limits.h>
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#include "vncsession.h"
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#include "vncview.h"
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#include "vncdisplay.h"
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#include "colortables.h"
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#include "menus.h"
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#include "clipboard.h"
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#include "desktopsize.h"
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#include "mouse.h"
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#include "keyboard.h"
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#include "copyrect.h"
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#include "raw.h"
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#include "hextile.h"
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/* Data on state of raw rectangle drawing routines */
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static unsigned int lineBytes; /* Number of bytes in a line of GS pixels */
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static unsigned long pixels;
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static unsigned int drawingLine; /* Line to be drawn while displaying */
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static BOOLEAN extraByteAdvance;
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/* Buffer to hold all SHR pixel data from one update (defined in tables.asm).
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* Must be big enough: at least (WIN_WIDTH_640/4 + 1) * WIN_HEIGHT. */
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#define DESTBUF_SIZE 0x8001
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extern unsigned char destBuf[];
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static unsigned char *destPtr;
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/* Ends drawing of a raw rectangle when it is complete or aborted
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* because the rectangle is not visible.
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*/
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static void StopRawDrawing (void) {
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HUnlock(readBufferHndl);
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displayInProgress = FALSE;
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NextRect(); /* Prepare for next rect */
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}
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#pragma optimize 95 /* To work around an ORCA/C optimizer bug */
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/* Draw one or more lines from a raw rectangle
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*/
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void RawDraw (void) {
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unsigned int i; /* Loop indices */
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unsigned char *dataPtr;
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unsigned char *lineDataPtr, *initialLineDataPtr;
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unsigned char *finalDestPtr;
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static EventRecord unusedEventRec;
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/* For use with GetContentOrigin() */
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unsigned long contentOrigin;
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Point * contentOriginPtr = (void *) &contentOrigin;
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SetPort(vncWindow); /* Drawing in VNC window */
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dataPtr = (unsigned char *) *readBufferHndl;
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/* Check if what we're drawing is visible, and skip any invisible part
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* by skipping some lines or completely aborting drawing the rectangle.
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*/
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if (checkBounds) {
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Rect drawingRect;
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contentOrigin = GetContentOrigin(vncWindow);
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drawingRect.h1 = rectX - contentOriginPtr->h;
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drawingRect.h2 = rectX - contentOriginPtr->h + rectWidth;
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drawingRect.v1 = rectY - contentOriginPtr->v + drawingLine;
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drawingRect.v2 = rectY - contentOriginPtr->v + rectHeight;
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if (!RectInRgn(&drawingRect, GetVisHandle())) {
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StopRawDrawing();
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return;
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}
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else if (rectY + drawingLine < contentOriginPtr->v) {
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destPtr += (unsigned long)lineBytes *
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(contentOriginPtr->v - rectY - drawingLine);
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drawingLine = contentOriginPtr->v - rectY;
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if (drawingLine >= rectHeight) { /* Sanity check */
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StopRawDrawing();
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return;
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}
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}
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else if (rectY + rectHeight - 1 > contentOriginPtr->v + winHeight)
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rectHeight = contentOriginPtr->v + winHeight - rectY + 1;
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checkBounds = FALSE;
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}
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lineDataPtr = dataPtr + (unsigned long) drawingLine * rectWidth;
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do { /* We short-circuit back to here if there are no events pending */
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unsigned inPixelsA, inPixelsB, inPixelsA2, inPixelsB2, outPixels;
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finalDestPtr = destPtr + lineBytes - 1;
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if (hRez == 640) {
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initialLineDataPtr = lineDataPtr;
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while (destPtr + 7 < finalDestPtr) { /* Unrolled loop */
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*(unsigned*)destPtr =
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outPixels = (*(unsigned*)(bigcoltab640a + (inPixelsA = *(unsigned*)lineDataPtr))
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^ *(unsigned*)(bigcoltab640b + (inPixelsB = ((unsigned*)lineDataPtr)[1])));
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*(unsigned*)(destPtr+1) =
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((inPixelsA ^ (inPixelsA2 = ((unsigned*)lineDataPtr)[2])) |
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(inPixelsB ^ (inPixelsB2 = ((unsigned*)lineDataPtr)[3]))) == 0 ? outPixels :
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(outPixels = (*(unsigned*)(bigcoltab640a + inPixelsA2)
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^ *(unsigned*)(bigcoltab640b + inPixelsB2)));
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*(unsigned*)(destPtr+2) =
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((inPixelsA2 ^ (inPixelsA = ((unsigned*)lineDataPtr)[4])) |
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(inPixelsB2 ^ (inPixelsB = ((unsigned*)lineDataPtr)[5]))) == 0 ? outPixels :
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(outPixels = (*(unsigned*)(bigcoltab640a + inPixelsA)
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^ *(unsigned*)(bigcoltab640b + inPixelsB)));
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*(unsigned*)(destPtr+3) =
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((inPixelsA ^ (inPixelsA2 = ((unsigned*)lineDataPtr)[6])) |
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(inPixelsB ^ (inPixelsB2 = ((unsigned*)lineDataPtr)[7]))) == 0 ? outPixels :
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(outPixels = (*(unsigned*)(bigcoltab640a + inPixelsA2)
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^ *(unsigned*)(bigcoltab640b + inPixelsB2)));
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*(unsigned*)(destPtr+4) =
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((inPixelsA2 ^ (inPixelsA = ((unsigned*)lineDataPtr)[8])) |
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(inPixelsB2 ^ (inPixelsB = ((unsigned*)lineDataPtr)[9]))) == 0 ? outPixels :
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(outPixels = (*(unsigned*)(bigcoltab640a + inPixelsA)
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^ *(unsigned*)(bigcoltab640b + inPixelsB)));
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*(unsigned*)(destPtr+5) =
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((inPixelsA ^ (inPixelsA2 = ((unsigned*)lineDataPtr)[10])) |
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(inPixelsB ^ (inPixelsB2 = ((unsigned*)lineDataPtr)[11]))) == 0 ? outPixels :
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(outPixels = (*(unsigned*)(bigcoltab640a + inPixelsA2)
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^ *(unsigned*)(bigcoltab640b + inPixelsB2)));
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*(unsigned*)(destPtr+6) =
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((inPixelsA2 ^ (inPixelsA = ((unsigned*)lineDataPtr)[12])) |
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(inPixelsB2 ^ (inPixelsB = ((unsigned*)lineDataPtr)[13]))) == 0 ? outPixels :
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(outPixels = (*(unsigned*)(bigcoltab640a + inPixelsA)
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^ *(unsigned*)(bigcoltab640b + inPixelsB)));
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*(destPtr+7) =
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((inPixelsA ^ (inPixelsA2 = ((unsigned*)lineDataPtr)[14])) |
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(inPixelsB ^ (inPixelsB2 = ((unsigned*)lineDataPtr)[15]))) == 0 ? outPixels :
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((*(unsigned*)(bigcoltab640a + inPixelsA2)
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^ *(unsigned*)(bigcoltab640b + inPixelsB2)));
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destPtr += 8;
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lineDataPtr += 32;
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}
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while (destPtr < finalDestPtr) {
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*(destPtr++) =
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*(unsigned*)(bigcoltab640a + *(unsigned*)lineDataPtr)
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+ *(unsigned*)(bigcoltab640b + ((unsigned*)lineDataPtr)[1]);
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lineDataPtr += 4;
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}
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/* Final byte to produce */
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*destPtr = pixTransTbl[*(lineDataPtr++)] & 0xC0;
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for (i = lineDataPtr - initialLineDataPtr; i < rectWidth; i++)
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switch (i & 0x03) {
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case 0x01: /* pixels 1, 5, 9, ... */
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*destPtr += pixTransTbl[*(lineDataPtr++)] & 0x30;
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break;
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case 0x02: /* pixels 2, 6, 10, ... */
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*destPtr += pixTransTbl[*(lineDataPtr++)] & 0x0C;
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break;
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case 0x03: /* pixels 3, 7, 11, ... */
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*destPtr += pixTransTbl[*(lineDataPtr++)] & 0x03;
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}
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destPtr++;
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}
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else { /* 320 mode */
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while (destPtr + 7 < finalDestPtr) { /* Unrolled loop */
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*(unsigned*)destPtr =
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outPixels = *(unsigned*)(bigcoltab320 + (inPixelsA = *(unsigned*)lineDataPtr));
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*(unsigned*)(destPtr+1) =
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(inPixelsA ^ (inPixelsB = ((unsigned*)lineDataPtr)[1])) == 0 ? outPixels :
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(outPixels = *(unsigned*)(bigcoltab320 + inPixelsB));
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*(unsigned*)(destPtr+2) =
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(inPixelsB ^ (inPixelsA = ((unsigned*)lineDataPtr)[2])) == 0 ? outPixels :
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(outPixels = *(unsigned*)(bigcoltab320 + inPixelsA));
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*(unsigned*)(destPtr+3) =
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(inPixelsA ^ (inPixelsB = ((unsigned*)lineDataPtr)[3])) == 0 ? outPixels :
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(outPixels = *(unsigned*)(bigcoltab320 + inPixelsB));
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*(unsigned*)(destPtr+4) =
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(inPixelsB ^ (inPixelsA = ((unsigned*)lineDataPtr)[4])) == 0 ? outPixels :
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(outPixels = *(unsigned*)(bigcoltab320 + inPixelsA));
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*(unsigned*)(destPtr+5) =
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(inPixelsA ^ (inPixelsB = ((unsigned*)lineDataPtr)[5])) == 0 ? outPixels :
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(outPixels = *(unsigned*)(bigcoltab320 + inPixelsB));
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*(unsigned*)(destPtr+6) =
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(inPixelsB ^ (inPixelsA = ((unsigned*)lineDataPtr)[6])) == 0 ? outPixels :
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(outPixels = *(unsigned*)(bigcoltab320 + inPixelsA));
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*(destPtr+7) =
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(inPixelsA ^ (inPixelsB = ((unsigned*)lineDataPtr)[7])) == 0 ? outPixels :
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*(unsigned*)(bigcoltab320 + inPixelsB);
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destPtr += 8;
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lineDataPtr += 16;
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}
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while (destPtr < finalDestPtr) {
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*(destPtr++) =
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*(unsigned*)(bigcoltab320 + *(unsigned*)lineDataPtr);
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lineDataPtr += 2;
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}
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/* Final byte to produce */
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*destPtr = pixTransTbl[*(lineDataPtr++)] & 0xF0;
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if (extraByteAdvance)
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destPtr++; /* Not ending on byte boundary - update index */
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else
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*(destPtr++) += pixTransTbl[*(lineDataPtr++)] & 0x0F;
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}
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drawingLine++;
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if (pixels > 613 && !(drawingLine & 0x03)) { /* Draw every 4th line */
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srcRect.v2 = drawingLine;
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contentOrigin = GetContentOrigin(vncWindow);
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PPToPort(&srcLocInfo, &srcRect, rectX - contentOriginPtr->h,
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rectY + srcRect.v1 - contentOriginPtr->v, modeCopy);
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srcRect.v1 = drawingLine;
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}
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/* Check whether we're done with this rectangle */
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if (drawingLine >= rectHeight) {
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/* Draw final rect, if necessary */
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if (drawingLine > srcRect.v1) {
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srcRect.v2 = drawingLine;
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contentOrigin = GetContentOrigin(vncWindow);
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PPToPort(&srcLocInfo, &srcRect, rectX - contentOriginPtr->h,
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rectY + srcRect.v1 - contentOriginPtr->v, modeCopy);
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}
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StopRawDrawing();
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return;
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}
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/* Check if there are actually any events that need to be processed.
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* If not, save time by not going through the whole event loop, but
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* instead processing the minimum necessary periodic tasks and then
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* going straight to the next line of data.
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*/
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if (EventAvail(0xFFFF, &unusedEventRec))
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return;
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SystemTask(); /* Let periodic Desk Accesories do their things */
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TCPIPPoll(); /* Let Marinetti keep processing data */
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} while (1);
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}
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#pragma optimize -1
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/* Draw one line of Raw data - used if the complete rect isn't yet available */
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static void RawDrawLine (void) {
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unsigned int i;
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unsigned char *dataPtr;
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unsigned long contentOrigin;
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Point * contentOriginPtr = (void *) &contentOrigin;
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if (hRez == 640) {
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if (rectWidth & 0x03) /* Width not an exact multiple of 4 */
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lineBytes = rectWidth/4 + 1;
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else /* Width is a multiple of 4 */
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lineBytes = rectWidth/4;
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}
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else { /* 320 mode */
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if (rectWidth & 0x01) /* Width not an exact multiple of 2 */
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lineBytes = rectWidth/2 + 1;
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else /* Width is a multiple of 2 */
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lineBytes = rectWidth/2;
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}
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destPtr = destBuf;
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srcLocInfo.ptrToPixImage = destPtr;
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srcLocInfo.width = lineBytes;
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srcLocInfo.boundsRect.v2 = 1;
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/* Since the lines are rounded up to integral numbers of bytes, this
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* padding must be accounted for here.
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*/
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if (hRez == 640) {
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switch (rectWidth & 0x03) {
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case 0x00: srcLocInfo.boundsRect.h2 = rectWidth; break;
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case 0x01: srcLocInfo.boundsRect.h2 = rectWidth+3; break;
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case 0x02: srcLocInfo.boundsRect.h2 = rectWidth+2; break;
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case 0x03: srcLocInfo.boundsRect.h2 = rectWidth+1;
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}
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}
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else {
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switch (rectWidth & 0x01) {
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case 0x00: srcLocInfo.boundsRect.h2 = rectWidth; break;
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case 0x01: srcLocInfo.boundsRect.h2 = rectWidth+1;
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}
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}
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/* Don't include padding in the area we will actually copy over */
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srcRect.h2 = rectWidth;
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srcRect.v1 = 0;
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srcRect.v2 = 1;
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HLock(readBufferHndl);
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dataPtr = (unsigned char *) *readBufferHndl;
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SetPort(vncWindow); /* Drawing in VNC window */
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if (hRez == 640)
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for (i = 0; i < rectWidth; /* i is incremented in loop */) {
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switch (i & 0x03) {
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case 0x00: /* pixels 0, 4, 8, ... */
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*destPtr = pixTransTbl[dataPtr[i++]] & 0xC0;
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break;
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case 0x01: /* pixels 1, 5, 9, ... */
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*destPtr += pixTransTbl[dataPtr[i++]] & 0x30;
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break;
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case 0x02: /* pixels 2, 6, 10, ... */
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*destPtr += pixTransTbl[dataPtr[i++]] & 0x0C;
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break;
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case 0x03: /* pixels 3, 7, 11, ... */
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*(destPtr++) += pixTransTbl[dataPtr[i++]] & 0x03;
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}
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}
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else /* 320 mode */
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for (i = 0; i < rectWidth; /* i is incremented in loop */) {
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if ((i & 0x01) == 0) /* pixels 0, 2, 4, ... */
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*destPtr = pixTransTbl[dataPtr[i++]] & 0xF0;
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else { /* pixels 1, 3, 5, ... */
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*(destPtr++) += pixTransTbl[dataPtr[i++]] & 0x0F;
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}
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}
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HUnlock(readBufferHndl);
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contentOrigin = GetContentOrigin(vncWindow);
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PPToPort(&srcLocInfo, &srcRect, rectX - contentOriginPtr->h,
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rectY - contentOriginPtr->v, modeCopy);
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free(srcLocInfo.ptrToPixImage); /* Allocated as destPtr */
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TCPIPPoll();
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rectHeight--; /* One less line left to draw */
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rectY++; /* Rest of rect starts one line below this */
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}
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/* Process rectangle data in raw encoding and write it to screen.
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*/
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void DoRawRect (void) {
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pixels = (unsigned long) rectWidth * rectHeight;
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/* Try to read data */
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if (! DoReadTCP (pixels)) {
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/* Only support line-by-line drawing if the connection is quite slow;
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* otherwise it's actually detrimental to overall speed. The Hextile
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* setting is used as a hint at the connection speed.
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*/
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if (useHextile && rectHeight > 1 && DoReadTCP ((unsigned long) rectWidth))
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RawDrawLine(); /* Some data ready - draw first line */
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return; /* Not ready yet; wait */
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}
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/* Here if data is ready to be processed */
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if (hRez == 640) {
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if (rectWidth & 0x03) { /* Width not an exact multiple of 4 */
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lineBytes = rectWidth/4 + 1;
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}
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else { /* Width is a multiple of 4 */
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lineBytes = rectWidth/4;
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}
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}
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else { /* 320 mode */
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if (rectWidth & 0x01) { /* Width not an exact multiple of 2 */
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lineBytes = rectWidth/2 + 1;
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extraByteAdvance = TRUE;
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}
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else { /* Width is a multiple of 2 */
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lineBytes = rectWidth/2;
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extraByteAdvance = FALSE;
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}
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}
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/* If we get an oversized update, ignore it and ask for another one.
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* Shouldn't normally happen, except possibly if there are outstanding
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* update requests for multiple screen regions due to scrolling.
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*/
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if (lineBytes * rectHeight >= DESTBUF_SIZE) {
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unsigned long contentOrigin;
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Point * contentOriginPtr = (void *) &contentOrigin;
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contentOrigin = GetContentOrigin(vncWindow);
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SendFBUpdateRequest(FALSE, contentOriginPtr->h, contentOriginPtr->v,
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winWidth, winHeight);
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StopRawDrawing();
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return;
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}
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destPtr = destBuf;
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srcLocInfo.ptrToPixImage = destPtr;
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srcLocInfo.width = lineBytes;
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srcLocInfo.boundsRect.v2 = rectHeight;
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/* Since the lines are rounded up to integral numbers of bytes, this
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* padding must be accounted for here.
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*/
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if (hRez == 640) {
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switch (rectWidth & 0x03) {
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case 0x00: srcLocInfo.boundsRect.h2 = rectWidth; break;
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case 0x01: srcLocInfo.boundsRect.h2 = rectWidth+3; break;
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case 0x02: srcLocInfo.boundsRect.h2 = rectWidth+2; break;
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case 0x03: srcLocInfo.boundsRect.h2 = rectWidth+1;
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}
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}
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else {
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switch (rectWidth & 0x01) {
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case 0x00: srcLocInfo.boundsRect.h2 = rectWidth; break;
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case 0x01: srcLocInfo.boundsRect.h2 = rectWidth+1;
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}
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}
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/* Don't include padding in the area we will actually copy over */
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srcRect.h2 = rectWidth;
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srcRect.v1 = 0;
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displayInProgress = TRUE;
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drawingLine = 0; /* Drawing first line of rect */
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checkBounds = TRUE; /* Flag to check bounds when drawing 1st line */
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HLock(readBufferHndl); /* Lock handle just once for efficiency */
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}
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