Archipelago » qemu

/*

 * QEMU VNC display driver: hextile encoding

 *

 * Copyright (C) 2006 Anthony Liguori <anthony@codemonkey.ws>

 * Copyright (C) 2006 Fabrice Bellard

 * Copyright (C) 2009 Red Hat, Inc

 *

 * 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.

 */

#include "vnc.h"

static void hextile_enc_cord(uint8_t *ptr, int x, int y, int w, int h)

{

    ptr[0] = ((x & 0x0F) << 4) | (y & 0x0F);

    ptr[1] = (((w - 1) & 0x0F) << 4) | ((h - 1) & 0x0F);

}

#define BPP 8

#include "vnc-enc-hextile-template.h"

#undef BPP

#define BPP 16

#include "vnc-enc-hextile-template.h"

#undef BPP

#define BPP 32

#include "vnc-enc-hextile-template.h"

#undef BPP

#define GENERIC

#define BPP 8

#include "vnc-enc-hextile-template.h"

#undef BPP

#undef GENERIC

#define GENERIC

#define BPP 16

#include "vnc-enc-hextile-template.h"

#undef BPP

#undef GENERIC

#define GENERIC

#define BPP 32

#include "vnc-enc-hextile-template.h"

#undef BPP

#undef GENERIC

int vnc_hextile_send_framebuffer_update(VncState *vs, int x,

                                        int y, int w, int h)

{

    int i, j;

    int has_fg, has_bg;

    uint8_t *last_fg, *last_bg;

    VncDisplay *vd = vs->vd;

    last_fg = (uint8_t *) qemu_malloc(vd->server->pf.bytes_per_pixel);

    last_bg = (uint8_t *) qemu_malloc(vd->server->pf.bytes_per_pixel);

    has_fg = has_bg = 0;

    for (j = y; j < (y + h); j += 16) {

        for (i = x; i < (x + w); i += 16) {

            vs->send_hextile_tile(vs, i, j,

                                  MIN(16, x + w - i), MIN(16, y + h - j),

                                  last_bg, last_fg, &has_bg, &has_fg);

        }

    }

    free(last_fg);

    free(last_bg);

    return 1;

}

void vnc_hextile_set_pixel_conversion(VncState *vs, int generic)

{

    if (!generic) {

        switch (vs->ds->surface->pf.bits_per_pixel) {

            case 8:

                vs->send_hextile_tile = send_hextile_tile_8;

                break;

            case 16:

                vs->send_hextile_tile = send_hextile_tile_16;

                break;

            case 32:

                vs->send_hextile_tile = send_hextile_tile_32;

                break;

        }

    } else {

        switch (vs->ds->surface->pf.bits_per_pixel) {

            case 8:

                vs->send_hextile_tile = send_hextile_tile_generic_8;

                break;

            case 16:

                vs->send_hextile_tile = send_hextile_tile_generic_16;

                break;

            case 32:

                vs->send_hextile_tile = send_hextile_tile_generic_32;

                break;

        }

    }

}