blob: 2e768fd89984ac3af88bf6c70fa1a97a444b53f4 [file] [log] [blame]
Corentin Chary70a45682010-05-03 14:31:34 +02001/*
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
Corentin Chary70a45682010-05-03 14:31:34 +020035#define BPP 32
Corentin Chary245f7b52010-07-07 20:57:53 +020036#include "vnc-enc-hextile-template.h"
Corentin Chary70a45682010-05-03 14:31:34 +020037#undef BPP
38
39#define GENERIC
Corentin Chary70a45682010-05-03 14:31:34 +020040#define BPP 32
Corentin Chary245f7b52010-07-07 20:57:53 +020041#include "vnc-enc-hextile-template.h"
Corentin Chary70a45682010-05-03 14:31:34 +020042#undef BPP
43#undef GENERIC
44
Corentin Charya8852112010-05-19 09:24:09 +020045int vnc_hextile_send_framebuffer_update(VncState *vs, int x,
46 int y, int w, int h)
Corentin Chary70a45682010-05-03 14:31:34 +020047{
48 int i, j;
49 int has_fg, has_bg;
50 uint8_t *last_fg, *last_bg;
Corentin Chary70a45682010-05-03 14:31:34 +020051
Gerd Hoffmann9f649162012-10-10 13:29:43 +020052 last_fg = (uint8_t *) g_malloc(VNC_SERVER_FB_BYTES);
53 last_bg = (uint8_t *) g_malloc(VNC_SERVER_FB_BYTES);
Corentin Chary70a45682010-05-03 14:31:34 +020054 has_fg = has_bg = 0;
55 for (j = y; j < (y + h); j += 16) {
56 for (i = x; i < (x + w); i += 16) {
Corentin Charyd1af0e02010-07-07 20:57:59 +020057 vs->hextile.send_tile(vs, i, j,
Corentin Chary70a45682010-05-03 14:31:34 +020058 MIN(16, x + w - i), MIN(16, y + h - j),
59 last_bg, last_fg, &has_bg, &has_fg);
60 }
61 }
Stefan Weilae878b12011-10-07 21:15:20 +020062 g_free(last_fg);
63 g_free(last_bg);
Corentin Chary70a45682010-05-03 14:31:34 +020064
Corentin Charya8852112010-05-19 09:24:09 +020065 return 1;
Corentin Chary70a45682010-05-03 14:31:34 +020066}
67
68void vnc_hextile_set_pixel_conversion(VncState *vs, int generic)
69{
70 if (!generic) {
Gerd Hoffmann9f649162012-10-10 13:29:43 +020071 switch (VNC_SERVER_FB_BITS) {
Gerd Hoffmann9f649162012-10-10 13:29:43 +020072 case 32:
73 vs->hextile.send_tile = send_hextile_tile_32;
74 break;
Corentin Chary70a45682010-05-03 14:31:34 +020075 }
76 } else {
Gerd Hoffmann9f649162012-10-10 13:29:43 +020077 switch (VNC_SERVER_FB_BITS) {
Gerd Hoffmann9f649162012-10-10 13:29:43 +020078 case 32:
79 vs->hextile.send_tile = send_hextile_tile_generic_32;
80 break;
Corentin Chary70a45682010-05-03 14:31:34 +020081 }
82 }
83}