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 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 65 int 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 89 void 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