LXR qemu/ui/qemu-pixman.c

   1/*
   2 * This work is licensed under the terms of the GNU GPL, version 2 or later.
   3 * See the COPYING file in the top-level directory.
   4 */
   5
   6#include "qemu-common.h"
   7#include "ui/console.h"
   8
   9int qemu_pixman_get_type(int rshift, int gshift, int bshift)
  10{
  11    int type = PIXMAN_TYPE_OTHER;
  12
  13    if (rshift > gshift && gshift > bshift) {
  14        if (bshift == 0) {
  15            type = PIXMAN_TYPE_ARGB;
  16        } else {
  17#if PIXMAN_VERSION >= PIXMAN_VERSION_ENCODE(0, 21, 8)
  18            type = PIXMAN_TYPE_RGBA;
  19#endif
  20        }
  21    } else if (rshift < gshift && gshift < bshift) {
  22        if (rshift == 0) {
  23            type = PIXMAN_TYPE_ABGR;
  24        } else {
  25#if PIXMAN_VERSION >= PIXMAN_VERSION_ENCODE(0, 16, 0)
  26            type = PIXMAN_TYPE_BGRA;
  27#endif
  28        }
  29    }
  30    return type;
  31}
  32
  33pixman_format_code_t qemu_pixman_get_format(PixelFormat *pf)
  34{
  35    pixman_format_code_t format;
  36    int type;
  37
  38    type = qemu_pixman_get_type(pf->rshift, pf->gshift, pf->bshift);
  39    format = PIXMAN_FORMAT(pf->bits_per_pixel, type,
  40                           pf->abits, pf->rbits, pf->gbits, pf->bbits);
  41    if (!pixman_format_supported_source(format)) {
  42        return 0;
  43    }
  44    return format;
  45}
  46
  47pixman_image_t *qemu_pixman_linebuf_create(pixman_format_code_t format,
  48                                           int width)
  49{
  50    pixman_image_t *image = pixman_image_create_bits(format, width, 1, NULL, 0);
  51    assert(image != NULL);
  52    return image;
  53}
  54
  55void qemu_pixman_linebuf_fill(pixman_image_t *linebuf, pixman_image_t *fb,
  56                              int width, int x, int y)
  57{
  58    pixman_image_composite(PIXMAN_OP_SRC, fb, NULL, linebuf,
  59                           x, y, 0, 0, 0, 0, width, 1);
  60}
  61
  62pixman_image_t *qemu_pixman_mirror_create(pixman_format_code_t format,
  63                                          pixman_image_t *image)
  64{
  65    pixman_image_t *mirror;
  66
  67    mirror = pixman_image_create_bits(format,
  68                                      pixman_image_get_width(image),
  69                                      pixman_image_get_height(image),
  70                                      NULL,
  71                                      pixman_image_get_stride(image));
  72    return mirror;
  73}
  74
  75void qemu_pixman_image_unref(pixman_image_t *image)
  76{
  77    if (image == NULL) {
  78        return;
  79    }
  80    pixman_image_unref(image);
  81}
  82
  83pixman_color_t qemu_pixman_color(PixelFormat *pf, uint32_t color)
  84{
  85    pixman_color_t c;
  86
  87    c.red   = ((color & pf->rmask) >> pf->rshift) << (16 - pf->rbits);
  88    c.green = ((color & pf->gmask) >> pf->gshift) << (16 - pf->gbits);
  89    c.blue  = ((color & pf->bmask) >> pf->bshift) << (16 - pf->bbits);
  90    c.alpha = ((color & pf->amask) >> pf->ashift) << (16 - pf->abits);
  91    return c;
  92}
  93
  94pixman_image_t *qemu_pixman_glyph_from_vgafont(int height, const uint8_t *font,
  95                                               unsigned int ch)
  96{
  97    pixman_image_t *glyph;
  98    uint8_t *data;
  99    bool bit;
 100    int x, y;
 101
 102    glyph = pixman_image_create_bits(PIXMAN_a8, 8, height,
 103                                     NULL, 0);
 104    data = (uint8_t *)pixman_image_get_data(glyph);
 105
 106    font += height * ch;
 107    for (y = 0; y < height; y++, font++) {
 108        for (x = 0; x < 8; x++, data++) {
 109            bit = (*font) & (1 << (7-x));
 110            *data = bit ? 0xff : 0x00;
 111        }
 112    }
 113    return glyph;
 114}
 115
 116void qemu_pixman_glyph_render(pixman_image_t *glyph,
 117                              pixman_image_t *surface,
 118                              pixman_color_t *fgcol,
 119                              pixman_color_t *bgcol,
 120                              int x, int y, int cw, int ch)
 121{
 122    pixman_image_t *ifg = pixman_image_create_solid_fill(fgcol);
 123    pixman_image_t *ibg = pixman_image_create_solid_fill(bgcol);
 124
 125    pixman_image_composite(PIXMAN_OP_SRC, ibg, NULL, surface,
 126                           0, 0, 0, 0,
 127                           cw * x, ch * y,
 128                           cw, ch);
 129    pixman_image_composite(PIXMAN_OP_OVER, ifg, glyph, surface,
 130                           0, 0, 0, 0,
 131                           cw * x, ch * y,
 132                           cw, ch);
 133    pixman_image_unref(ifg);
 134    pixman_image_unref(ibg);
 135}
 136