1 /* 2 * QEMU VNC display driver: palette hash table 3 * 4 * From libvncserver/libvncserver/tight.c 5 * Copyright (C) 2000, 2001 Const Kaplinsky. All Rights Reserved. 6 * Copyright (C) 1999 AT&T Laboratories Cambridge. All Rights Reserved. 7 * 8 * Copyright (C) 2010 Corentin Chary <corentin.chary@gmail.com> 9 * 10 * Permission is hereby granted, free of charge, to any person obtaining a copy 11 * of this software and associated documentation files (the "Software"), to deal 12 * in the Software without restriction, including without limitation the rights 13 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 14 * copies of the Software, and to permit persons to whom the Software is 15 * furnished to do so, subject to the following conditions: 16 * 17 * The above copyright notice and this permission notice shall be included in 18 * all copies or substantial portions of the Software. 19 * 20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 21 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 23 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 24 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 25 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 26 * THE SOFTWARE. 27 */ 28 29 #ifndef VNC_PALETTE_H 30 #define VNC_PALETTE_H 31 32 #include "qapi/qmp/qlist.h" 33 #include "qemu/queue.h" 34 #include <stdint.h> 35 #include <stdbool.h> 36 37 #define VNC_PALETTE_HASH_SIZE 256 38 #define VNC_PALETTE_MAX_SIZE 256 39 40 typedef struct VncPaletteEntry { 41 int idx; 42 uint32_t color; 43 QLIST_ENTRY(VncPaletteEntry) next; 44 } VncPaletteEntry; 45 46 typedef struct VncPalette { 47 VncPaletteEntry pool[VNC_PALETTE_MAX_SIZE]; 48 size_t size; 49 size_t max; 50 int bpp; 51 QLIST_HEAD(,VncPaletteEntry) table[VNC_PALETTE_HASH_SIZE]; 52 } VncPalette; 53 54 VncPalette *palette_new(size_t max, int bpp); 55 void palette_init(VncPalette *palette, size_t max, int bpp); 56 void palette_destroy(VncPalette *palette); 57 58 int palette_put(VncPalette *palette, uint32_t color); 59 int palette_idx(const VncPalette *palette, uint32_t color); 60 size_t palette_size(const VncPalette *palette); 61 62 void palette_iter(const VncPalette *palette, 63 void (*iter)(int idx, uint32_t color, void *opaque), 64 void *opaque); 65 uint32_t palette_color(const VncPalette *palette, int idx, bool *found); 66 size_t palette_fill(const VncPalette *palette, 67 uint32_t colors[VNC_PALETTE_MAX_SIZE]); 68 69 #endif /* VNC_PALETTE_H */ 70