Archipelago » qemu

/*

 * This work is licensed under the terms of the GNU GPL, version 2 or later.

 * See the COPYING file in the top-level directory.

 */

#include "qemu-common.h"

#include "ui/console.h"

int qemu_pixman_get_type(int rshift, int gshift, int bshift)

{

    int type = PIXMAN_TYPE_OTHER;

    if (rshift > gshift && gshift > bshift) {

        if (bshift == 0) {

            type = PIXMAN_TYPE_ARGB;

        } else {

#if PIXMAN_VERSION >= PIXMAN_VERSION_ENCODE(0, 21, 8)

            type = PIXMAN_TYPE_RGBA;

#endif

        }

    } else if (rshift < gshift && gshift < bshift) {

        if (rshift == 0) {

            type = PIXMAN_TYPE_ABGR;

        } else {

#if PIXMAN_VERSION >= PIXMAN_VERSION_ENCODE(0, 16, 0)

            type = PIXMAN_TYPE_BGRA;

#endif

        }

    }

    return type;

}

pixman_format_code_t qemu_pixman_get_format(PixelFormat *pf)

{

    pixman_format_code_t format;

    int type;

    type = qemu_pixman_get_type(pf->rshift, pf->gshift, pf->bshift);

    format = PIXMAN_FORMAT(pf->bits_per_pixel, type,

                           pf->abits, pf->rbits, pf->gbits, pf->bbits);

    if (!pixman_format_supported_source(format)) {

        return 0;

    }

    return format;

}

pixman_image_t *qemu_pixman_linebuf_create(pixman_format_code_t format,

                                           int width)

{

    pixman_image_t *image = pixman_image_create_bits(format, width, 1, NULL, 0);

    assert(image != NULL);

    return image;

}

void qemu_pixman_linebuf_fill(pixman_image_t *linebuf, pixman_image_t *fb,

                              int width, int x, int y)

{

    pixman_image_composite(PIXMAN_OP_SRC, fb, NULL, linebuf,

                           x, y, 0, 0, 0, 0, width, 1);

}

pixman_image_t *qemu_pixman_mirror_create(pixman_format_code_t format,

                                          pixman_image_t *image)

{

    pixman_image_t *mirror;

    mirror = pixman_image_create_bits(format,

                                      pixman_image_get_width(image),

                                      pixman_image_get_height(image),

                                      NULL,

                                      pixman_image_get_stride(image));

    return mirror;

}

void qemu_pixman_image_unref(pixman_image_t *image)

{

    if (image == NULL) {

        return;

    }

    pixman_image_unref(image);

}

pixman_color_t qemu_pixman_color(PixelFormat *pf, uint32_t color)

{

    pixman_color_t c;

    c.red   = ((color & pf->rmask) >> pf->rshift) << (16 - pf->rbits);

    c.green = ((color & pf->gmask) >> pf->gshift) << (16 - pf->gbits);

    c.blue  = ((color & pf->bmask) >> pf->bshift) << (16 - pf->bbits);

    c.alpha = ((color & pf->amask) >> pf->ashift) << (16 - pf->abits);

    return c;

}

pixman_image_t *qemu_pixman_glyph_from_vgafont(int height, const uint8_t *font,

                                               unsigned int ch)

{

    pixman_image_t *glyph;

    uint8_t *data;

    bool bit;

    int x, y;

    glyph = pixman_image_create_bits(PIXMAN_a8, 8, height,

                                     NULL, 0);

    data = (uint8_t *)pixman_image_get_data(glyph);

    font += height * ch;

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

        for (x = 0; x < 8; x++, data++) {

            bit = (*font) & (1 << (7-x));

            *data = bit ? 0xff : 0x00;

        }

    }

    return glyph;

}

void qemu_pixman_glyph_render(pixman_image_t *glyph,

                              pixman_image_t *surface,

                              pixman_color_t *fgcol,

                              pixman_color_t *bgcol,

                              int x, int y, int cw, int ch)

{

    pixman_image_t *ifg = pixman_image_create_solid_fill(fgcol);

    pixman_image_t *ibg = pixman_image_create_solid_fill(bgcol);

    pixman_image_composite(PIXMAN_OP_SRC, ibg, NULL, surface,

                           0, 0, 0, 0,

                           cw * x, ch * y,

                           cw, ch);

    pixman_image_composite(PIXMAN_OP_OVER, ifg, glyph, surface,

                           0, 0, 0, 0,

                           cw * x, ch * y,

                           cw, ch);

    pixman_image_unref(ifg);

    pixman_image_unref(ibg);

}