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 29 static 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 32 36 #include "vnc-enc-hextile-template.h" 37 #undef BPP 38 39 #define GENERIC 40 #define BPP 32 41 #include "vnc-enc-hextile-template.h" 42 #undef BPP 43 #undef GENERIC 44 45 int vnc_hextile_send_framebuffer_update(VncState *vs, int x, 46 int y, int w, int h) 47 { 48 int i, j; 49 int has_fg, has_bg; 50 uint8_t *last_fg, *last_bg; 51 52 last_fg = (uint8_t *) g_malloc(VNC_SERVER_FB_BYTES); 53 last_bg = (uint8_t *) g_malloc(VNC_SERVER_FB_BYTES); 54 has_fg = has_bg = 0; 55 for (j = y; j < (y + h); j += 16) { 56 for (i = x; i < (x + w); i += 16) { 57 vs->hextile.send_tile(vs, i, j, 58 MIN(16, x + w - i), MIN(16, y + h - j), 59 last_bg, last_fg, &has_bg, &has_fg); 60 } 61 } 62 g_free(last_fg); 63 g_free(last_bg); 64 65 return 1; 66 } 67 68 void vnc_hextile_set_pixel_conversion(VncState *vs, int generic) 69 { 70 if (!generic) { 71 switch (VNC_SERVER_FB_BITS) { 72 case 32: 73 vs->hextile.send_tile = send_hextile_tile_32; 74 break; 75 } 76 } else { 77 switch (VNC_SERVER_FB_BITS) { 78 case 32: 79 vs->hextile.send_tile = send_hextile_tile_generic_32; 80 break; 81 } 82 } 83 } 84