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/*

 * QEMU VNC display driver: palette hash table

 *

 * From libvncserver/libvncserver/tight.c

 * Copyright (C) 2000, 2001 Const Kaplinsky.  All Rights Reserved.

 * Copyright (C) 1999 AT&T Laboratories Cambridge.  All Rights Reserved.

 *

 * Copyright (C) 2010 Corentin Chary <corentin.chary@gmail.com>

 *

 * Permission is hereby granted, free of charge, to any person obtaining a copy

 * of this software and associated documentation files (the "Software"), to deal

 * in the Software without restriction, including without limitation the rights

 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

 * copies of the Software, and to permit persons to whom the Software is

 * furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL

 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

 * THE SOFTWARE.

 */

#ifndef VNC_PALETTE_H

#define VNC_PALETTE_H

#include "qapi/qmp/qlist.h"

#include "qemu/queue.h"

#include <stdint.h>

#include <stdbool.h>

#define VNC_PALETTE_HASH_SIZE 256

#define VNC_PALETTE_MAX_SIZE  256

typedef struct VncPaletteEntry {

    int idx;

    uint32_t color;

    QLIST_ENTRY(VncPaletteEntry) next;

} VncPaletteEntry;

typedef struct VncPalette {

    VncPaletteEntry pool[VNC_PALETTE_MAX_SIZE];

    size_t size;

    size_t max;

    int bpp;

    QLIST_HEAD(,VncPaletteEntry) table[VNC_PALETTE_HASH_SIZE];

} VncPalette;

VncPalette *palette_new(size_t max, int bpp);

void palette_init(VncPalette *palette, size_t max, int bpp);

void palette_destroy(VncPalette *palette);

int palette_put(VncPalette *palette, uint32_t color);

int palette_idx(const VncPalette *palette, uint32_t color);

size_t palette_size(const VncPalette *palette);

void palette_iter(const VncPalette *palette,

                  void (*iter)(int idx, uint32_t color, void *opaque),

                  void *opaque);

uint32_t palette_color(const VncPalette *palette, int idx, bool *found);

size_t palette_fill(const VncPalette *palette,

                    uint32_t colors[VNC_PALETTE_MAX_SIZE]);

#endif /* VNC_PALETTE_H */