qemu

FORK: QEMU emulator
git clone https://git.neptards.moe/neptards/qemu.git
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vnc-enc-hextile.c (2706B)

      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 }