LXR qemu/ui/vnc-enc-hextile.c

   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}
  85