Archipelago » qemu

#include "qemu-common.h"

#include "console.h"

#include "cursor_hidden.xpm"

#include "cursor_left_ptr.xpm"

/* for creating built-in cursors */

static QEMUCursor *cursor_parse_xpm(const char *xpm[])

{

    QEMUCursor *c;

    uint32_t ctab[128];

    unsigned int width, height, colors, chars;

    unsigned int line = 0, i, r, g, b, x, y, pixel;

    char name[16];

    uint8_t idx;

    /* parse header line: width, height, #colors, #chars */

    if (sscanf(xpm[line], "%d %d %d %d", &width, &height, &colors, &chars) != 4) {

        fprintf(stderr, "%s: header parse error: \"%s\"\n",

                __FUNCTION__, xpm[line]);

        return NULL;

    }

    if (chars != 1) {

        fprintf(stderr, "%s: chars != 1 not supported\n", __FUNCTION__);

        return NULL;

    }

    line++;

    /* parse color table */

    for (i = 0; i < colors; i++, line++) {

        if (sscanf(xpm[line], "%c c %15s", &idx, name) == 2) {

            if (sscanf(name, "#%02x%02x%02x", &r, &g, &b) == 3) {

                ctab[idx] = (0xff << 24) | (b << 16) | (g << 8) | r;

                continue;

            }

            if (strcmp(name, "None") == 0) {

                ctab[idx] = 0x00000000;

                continue;

            }

        }

        fprintf(stderr, "%s: color parse error: \"%s\"\n",

                __FUNCTION__, xpm[line]);

        return NULL;

    }

    /* parse pixel data */

    c = cursor_alloc(width, height);

    for (pixel = 0, y = 0; y < height; y++, line++) {

        for (x = 0; x < height; x++, pixel++) {

            idx = xpm[line][x];

            c->data[pixel] = ctab[idx];

        }

    }

    return c;

}

/* nice for debugging */

void cursor_print_ascii_art(QEMUCursor *c, const char *prefix)

{

    uint32_t *data = c->data;

    int x,y;

    for (y = 0; y < c->height; y++) {

        fprintf(stderr, "%s: %2d: |", prefix, y);

        for (x = 0; x < c->width; x++, data++) {

            if ((*data & 0xff000000) != 0xff000000) {

                fprintf(stderr, " "); /* transparent */

            } else if ((*data & 0x00ffffff) == 0x00ffffff) {

                fprintf(stderr, "."); /* white */

            } else if ((*data & 0x00ffffff) == 0x00000000) {

                fprintf(stderr, "X"); /* black */

            } else {

                fprintf(stderr, "o"); /* other */

            }

        }

        fprintf(stderr, "|\n");

    }

}

QEMUCursor *cursor_builtin_hidden(void)

{

    QEMUCursor *c;

    c = cursor_parse_xpm(cursor_hidden_xpm);

    return c;

}

QEMUCursor *cursor_builtin_left_ptr(void)

{

    QEMUCursor *c;

    c = cursor_parse_xpm(cursor_left_ptr_xpm);

    return c;

}

QEMUCursor *cursor_alloc(int width, int height)

{

    QEMUCursor *c;

    int datasize = width * height * sizeof(uint32_t);

    c = g_malloc0(sizeof(QEMUCursor) + datasize);

    c->width  = width;

    c->height = height;

    c->refcount = 1;

    return c;

}

void cursor_get(QEMUCursor *c)

{

    c->refcount++;

}

void cursor_put(QEMUCursor *c)

{

    if (c == NULL)

        return;

    c->refcount--;

    if (c->refcount)

        return;

    g_free(c);

}

int cursor_get_mono_bpl(QEMUCursor *c)

{

    return (c->width + 7) / 8;

}

void cursor_set_mono(QEMUCursor *c,

                     uint32_t foreground, uint32_t background, uint8_t *image,

                     int transparent, uint8_t *mask)

{

    uint32_t *data = c->data;

    uint8_t bit;

    int x,y,bpl;

    bpl = cursor_get_mono_bpl(c);

    for (y = 0; y < c->height; y++) {

        bit = 0x80;

        for (x = 0; x < c->width; x++, data++) {

            if (transparent && mask[x/8] & bit) {

                *data = 0x00000000;

            } else if (!transparent && !(mask[x/8] & bit)) {

                *data = 0x00000000;

            } else if (image[x/8] & bit) {

                *data = 0xff000000 | foreground;

            } else {

                *data = 0xff000000 | background;

            }

            bit >>= 1;

            if (bit == 0) {

                bit = 0x80;

            }

        }

        mask  += bpl;

        image += bpl;

    }

}

void cursor_get_mono_image(QEMUCursor *c, int foreground, uint8_t *image)

{

    uint32_t *data = c->data;

    uint8_t bit;

    int x,y,bpl;

    bpl = cursor_get_mono_bpl(c);

    memset(image, 0, bpl * c->height);

    for (y = 0; y < c->height; y++) {

        bit = 0x80;

        for (x = 0; x < c->width; x++, data++) {

            if (((*data & 0xff000000) == 0xff000000) &&

                ((*data & 0x00ffffff) == foreground)) {

                image[x/8] |= bit;

            }

            bit >>= 1;

            if (bit == 0) {

                bit = 0x80;

            }

        }

        image += bpl;

    }

}

void cursor_get_mono_mask(QEMUCursor *c, int transparent, uint8_t *mask)

{

    uint32_t *data = c->data;

    uint8_t bit;

    int x,y,bpl;

    bpl = cursor_get_mono_bpl(c);

    memset(mask, 0, bpl * c->height);

    for (y = 0; y < c->height; y++) {

        bit = 0x80;

        for (x = 0; x < c->width; x++, data++) {

            if ((*data & 0xff000000) != 0xff000000) {

                if (transparent != 0) {

                    mask[x/8] |= bit;

                }

            } else {

                if (transparent == 0) {

                    mask[x/8] |= bit;

                }

            }

            bit >>= 1;

            if (bit == 0) {

                bit = 0x80;

            }

        }

        mask += bpl;

    }

}