| /* |
| * 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. |
| */ |
| |
| /* |
| * hextile.c - handle hextile encoding. |
| * |
| * This file shouldn't be compiled directly. It is included multiple times by |
| * rfbproto.c, each time with a different definition of the macro BPP. For |
| * each value of BPP, this file defines a function which handles a hextile |
| * encoded rectangle with BPP bits per pixel. |
| */ |
| |
| #define HandleHextileBPP CONCAT2E(HandleHextile,BPP) |
| #define CARDBPP CONCAT3E(uint,BPP,_t) |
| |
| static rfbBool |
| HandleHextileBPP (rfbClient* client, int rx, int ry, int rw, int rh) |
| { |
| CARDBPP bg, fg; |
| int i; |
| uint8_t *ptr; |
| int x, y, w, h; |
| int sx, sy, sw, sh; |
| uint8_t subencoding; |
| uint8_t nSubrects; |
| |
| for (y = ry; y < ry+rh; y += 16) { |
| for (x = rx; x < rx+rw; x += 16) { |
| w = h = 16; |
| if (rx+rw - x < 16) |
| w = rx+rw - x; |
| if (ry+rh - y < 16) |
| h = ry+rh - y; |
| |
| if (!ReadFromRFBServer(client, (char *)&subencoding, 1)) |
| return FALSE; |
| |
| if (subencoding & rfbHextileRaw) { |
| if (!ReadFromRFBServer(client, client->buffer, w * h * (BPP / 8))) |
| return FALSE; |
| |
| CopyRectangle(client, (uint8_t *)client->buffer, x, y, w, h); |
| |
| continue; |
| } |
| |
| if (subencoding & rfbHextileBackgroundSpecified) |
| if (!ReadFromRFBServer(client, (char *)&bg, sizeof(bg))) |
| return FALSE; |
| |
| FillRectangle(client, x, y, w, h, bg); |
| |
| if (subencoding & rfbHextileForegroundSpecified) |
| if (!ReadFromRFBServer(client, (char *)&fg, sizeof(fg))) |
| return FALSE; |
| |
| if (!(subencoding & rfbHextileAnySubrects)) { |
| continue; |
| } |
| |
| if (!ReadFromRFBServer(client, (char *)&nSubrects, 1)) |
| return FALSE; |
| |
| ptr = (uint8_t*)client->buffer; |
| |
| if (subencoding & rfbHextileSubrectsColoured) { |
| if (!ReadFromRFBServer(client, client->buffer, nSubrects * (2 + (BPP / 8)))) |
| return FALSE; |
| |
| for (i = 0; i < nSubrects; i++) { |
| #if BPP==8 |
| GET_PIXEL8(fg, ptr); |
| #elif BPP==16 |
| GET_PIXEL16(fg, ptr); |
| #elif BPP==32 |
| GET_PIXEL32(fg, ptr); |
| #else |
| #error "Invalid BPP" |
| #endif |
| sx = rfbHextileExtractX(*ptr); |
| sy = rfbHextileExtractY(*ptr); |
| ptr++; |
| sw = rfbHextileExtractW(*ptr); |
| sh = rfbHextileExtractH(*ptr); |
| ptr++; |
| |
| FillRectangle(client, x+sx, y+sy, sw, sh, fg); |
| } |
| |
| } else { |
| if (!ReadFromRFBServer(client, client->buffer, nSubrects * 2)) |
| return FALSE; |
| |
| for (i = 0; i < nSubrects; i++) { |
| sx = rfbHextileExtractX(*ptr); |
| sy = rfbHextileExtractY(*ptr); |
| ptr++; |
| sw = rfbHextileExtractW(*ptr); |
| sh = rfbHextileExtractH(*ptr); |
| ptr++; |
| |
| FillRectangle(client, x+sx, y+sy, sw, sh, fg); |
| } |
| } |
| } |
| } |
| |
| return TRUE; |
| } |
| |
| #undef CARDBPP |