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
   9 int 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
  33 pixman_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
  47 pixman_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
  55 void 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
  62 pixman_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
  75 void qemu_pixman_image_unref(pixman_image_t *image)
  76 {
  77     if (image == NULL) {
  78         return;
  79     }
  80     pixman_image_unref(image);
  81 }
  82
  83 pixman_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
  94 pixman_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
 116 void 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 }