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 "vnc.h"
  28
  29static void hextile_enc_cord(uint8_t *ptr, int x, int y, int w, int h)
  30{
  31    ptr[0] = ((x & 0x0F) << 4) | (y & 0x0F);
  32    ptr[1] = (((w - 1) & 0x0F) << 4) | ((h - 1) & 0x0F);
  33}
  34
  35#define BPP 8
  36#include "vnc-enc-hextile-template.h"
  37#undef BPP
  38
  39#define BPP 16
  40#include "vnc-enc-hextile-template.h"
  41#undef BPP
  42
  43#define BPP 32
  44#include "vnc-enc-hextile-template.h"
  45#undef BPP
  46
  47#define GENERIC
  48#define BPP 8
  49#include "vnc-enc-hextile-template.h"
  50#undef BPP
  51#undef GENERIC
  52
  53#define GENERIC
  54#define BPP 16
  55#include "vnc-enc-hextile-template.h"
  56#undef BPP
  57#undef GENERIC
  58
  59#define GENERIC
  60#define BPP 32
  61#include "vnc-enc-hextile-template.h"
  62#undef BPP
  63#undef GENERIC
  64
  65int vnc_hextile_send_framebuffer_update(VncState *vs, int x,
  66                                        int y, int w, int h)
  67{
  68    int i, j;
  69    int has_fg, has_bg;
  70    uint8_t *last_fg, *last_bg;
  71    VncDisplay *vd = vs->vd;
  72
  73    last_fg = (uint8_t *) g_malloc(vd->server->pf.bytes_per_pixel);
  74    last_bg = (uint8_t *) g_malloc(vd->server->pf.bytes_per_pixel);
  75    has_fg = has_bg = 0;
  76    for (j = y; j < (y + h); j += 16) {
  77        for (i = x; i < (x + w); i += 16) {
  78            vs->hextile.send_tile(vs, i, j,
  79                                  MIN(16, x + w - i), MIN(16, y + h - j),
  80                                  last_bg, last_fg, &has_bg, &has_fg);
  81        }
  82    }
  83    g_free(last_fg);
  84    g_free(last_bg);
  85
  86    return 1;
  87}
  88
  89void vnc_hextile_set_pixel_conversion(VncState *vs, int generic)
  90{
  91    if (!generic) {
  92        switch (vs->ds->surface->pf.bits_per_pixel) {
  93            case 8:
  94                vs->hextile.send_tile = send_hextile_tile_8;
  95                break;
  96            case 16:
  97                vs->hextile.send_tile = send_hextile_tile_16;
  98                break;
  99            case 32:
 100                vs->hextile.send_tile = send_hextile_tile_32;
 101                break;
 102        }
 103    } else {
 104        switch (vs->ds->surface->pf.bits_per_pixel) {
 105            case 8:
 106                vs->hextile.send_tile = send_hextile_tile_generic_8;
 107                break;
 108            case 16:
 109                vs->hextile.send_tile = send_hextile_tile_generic_16;
 110                break;
 111            case 32:
 112                vs->hextile.send_tile = send_hextile_tile_generic_32;
 113                break;
 114        }
 115    }
 116}
 117