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 30 static 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 46 int 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 = g_malloc(VNC_SERVER_FB_BYTES); 54 last_bg = 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 69 void 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