LXR qemu/ui/vnc-palette.h

   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 "qemu/queue.h"
  33
  34#define VNC_PALETTE_HASH_SIZE 256
  35#define VNC_PALETTE_MAX_SIZE  256
  36
  37typedef struct VncPaletteEntry {
  38    int idx;
  39    uint32_t color;
  40    QLIST_ENTRY(VncPaletteEntry) next;
  41} VncPaletteEntry;
  42
  43typedef struct VncPalette {
  44    VncPaletteEntry pool[VNC_PALETTE_MAX_SIZE];
  45    size_t size;
  46    size_t max;
  47    int bpp;
  48    QLIST_HEAD(,VncPaletteEntry) table[VNC_PALETTE_HASH_SIZE];
  49} VncPalette;
  50
  51VncPalette *palette_new(size_t max, int bpp);
  52void palette_init(VncPalette *palette, size_t max, int bpp);
  53void palette_destroy(VncPalette *palette);
  54
  55int palette_put(VncPalette *palette, uint32_t color);
  56int palette_idx(const VncPalette *palette, uint32_t color);
  57size_t palette_size(const VncPalette *palette);
  58
  59void palette_iter(const VncPalette *palette,
  60                  void (*iter)(int idx, uint32_t color, void *opaque),
  61                  void *opaque);
  62uint32_t palette_color(const VncPalette *palette, int idx, bool *found);
  63size_t palette_fill(const VncPalette *palette,
  64                    uint32_t colors[VNC_PALETTE_MAX_SIZE]);
  65
  66#endif /* VNC_PALETTE_H */
  67