cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
Log | Files | Refs | Submodules | LICENSE | sfeed.txt

vnc-enc-hextile.c (2730B)

      1/*
      2 * QEMU VNC display driver: hextile encoding
      3 *
      4 * Copyright (C) 2006 Anthony Liguori <anthony@codemonkey.ws>
      5 * Copyright (C) 2006 Fabrice Bellard
      6 * Copyright (C) 2009 Red Hat, Inc
      7 *
      8 * Permission is hereby granted, free of charge, to any person obtaining a copy
      9 * of this software and associated documentation files (the "Software"), to deal
     10 * in the Software without restriction, including without limitation the rights
     11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     12 * copies of the Software, and to permit persons to whom the Software is
     13 * furnished to do so, subject to the following conditions:
     14 *
     15 * The above copyright notice and this permission notice shall be included in
     16 * all copies or substantial portions of the Software.
     17 *
     18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
     21 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
     24 * THE SOFTWARE.
     25 */
     26
     27#include "qemu/osdep.h"
     28#include "vnc.h"
     29
     30static void hextile_enc_cord(uint8_t *ptr, int x, int y, int w, int h)
     31{
     32    ptr[0] = ((x & 0x0F) << 4) | (y & 0x0F);
     33    ptr[1] = (((w - 1) & 0x0F) << 4) | ((h - 1) & 0x0F);
     34}
     35
     36#define BPP 32
     37#include "vnc-enc-hextile-template.h"
     38#undef BPP
     39
     40#define GENERIC
     41#define BPP 32
     42#include "vnc-enc-hextile-template.h"
     43#undef BPP
     44#undef GENERIC
     45
     46int vnc_hextile_send_framebuffer_update(VncState *vs, int x,
     47                                        int y, int w, int h)
     48{
     49    int i, j;
     50    int has_fg, has_bg;
     51    uint8_t *last_fg, *last_bg;
     52
     53    last_fg = (uint8_t *) g_malloc(VNC_SERVER_FB_BYTES);
     54    last_bg = (uint8_t *) g_malloc(VNC_SERVER_FB_BYTES);
     55    has_fg = has_bg = 0;
     56    for (j = y; j < (y + h); j += 16) {
     57        for (i = x; i < (x + w); i += 16) {
     58            vs->hextile.send_tile(vs, i, j,
     59                                  MIN(16, x + w - i), MIN(16, y + h - j),
     60                                  last_bg, last_fg, &has_bg, &has_fg);
     61        }
     62    }
     63    g_free(last_fg);
     64    g_free(last_bg);
     65
     66    return 1;
     67}
     68
     69void vnc_hextile_set_pixel_conversion(VncState *vs, int generic)
     70{
     71    if (!generic) {
     72        switch (VNC_SERVER_FB_BITS) {
     73        case 32:
     74            vs->hextile.send_tile = send_hextile_tile_32;
     75            break;
     76        }
     77    } else {
     78        switch (VNC_SERVER_FB_BITS) {
     79        case 32:
     80            vs->hextile.send_tile = send_hextile_tile_generic_32;
     81            break;
     82        }
     83    }
     84}