include/ui/qemu-pixman.h

   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 #ifndef QEMU_PIXMAN_H
   7 #define QEMU_PIXMAN_H
   8
   9 /* pixman-0.16.0 headers have a redundant declaration */
  10 #pragma GCC diagnostic push
  11 #pragma GCC diagnostic ignored "-Wredundant-decls"
  12 #include <pixman.h>
  13 #pragma GCC diagnostic pop
  14
  15 /*
  16  * pixman image formats are defined to be native endian,
  17  * that means host byte order on qemu.  So we go define
  18  * fixed formats here for cases where it is needed, like
  19  * feeding libjpeg / libpng and writing screenshots.
  20  */
  21
  22 #if HOST_BIG_ENDIAN
  23 # define PIXMAN_BE_r8g8b8     PIXMAN_r8g8b8
  24 # define PIXMAN_BE_x8r8g8b8   PIXMAN_x8r8g8b8
  25 # define PIXMAN_BE_a8r8g8b8   PIXMAN_a8r8g8b8
  26 # define PIXMAN_BE_b8g8r8x8   PIXMAN_b8g8r8x8
  27 # define PIXMAN_BE_b8g8r8a8   PIXMAN_b8g8r8a8
  28 # define PIXMAN_BE_r8g8b8x8   PIXMAN_r8g8b8x8
  29 # define PIXMAN_BE_r8g8b8a8   PIXMAN_r8g8b8a8
  30 # define PIXMAN_BE_x8b8g8r8   PIXMAN_x8b8g8r8
  31 # define PIXMAN_BE_a8b8g8r8   PIXMAN_a8b8g8r8
  32 # define PIXMAN_LE_r8g8b8     PIXMAN_b8g8r8
  33 # define PIXMAN_LE_a8r8g8b8   PIXMAN_b8g8r8a8
  34 # define PIXMAN_LE_x8r8g8b8   PIXMAN_b8g8r8x8
  35 # define PIXMAN_LE_a8b8g8r8   PIXMAN_r8g8b8a8
  36 # define PIXMAN_LE_x8b8g8r8   PIXMAN_r8g8b8x8
  37 #else
  38 # define PIXMAN_BE_r8g8b8     PIXMAN_b8g8r8
  39 # define PIXMAN_BE_x8r8g8b8   PIXMAN_b8g8r8x8
  40 # define PIXMAN_BE_a8r8g8b8   PIXMAN_b8g8r8a8
  41 # define PIXMAN_BE_b8g8r8x8   PIXMAN_x8r8g8b8
  42 # define PIXMAN_BE_b8g8r8a8   PIXMAN_a8r8g8b8
  43 # define PIXMAN_BE_r8g8b8x8   PIXMAN_x8b8g8r8
  44 # define PIXMAN_BE_r8g8b8a8   PIXMAN_a8b8g8r8
  45 # define PIXMAN_BE_x8b8g8r8   PIXMAN_r8g8b8x8
  46 # define PIXMAN_BE_a8b8g8r8   PIXMAN_r8g8b8a8
  47 # define PIXMAN_LE_r8g8b8     PIXMAN_r8g8b8
  48 # define PIXMAN_LE_a8r8g8b8   PIXMAN_a8r8g8b8
  49 # define PIXMAN_LE_x8r8g8b8   PIXMAN_x8r8g8b8
  50 # define PIXMAN_LE_a8b8g8r8   PIXMAN_a8b8g8r8
  51 # define PIXMAN_LE_x8b8g8r8   PIXMAN_x8b8g8r8
  52 #endif
  53
  54 #define QEMU_PIXMAN_COLOR(r, g, b)                                               \
  55     { .red = r << 8, .green = g << 8, .blue = b << 8, .alpha = 0xffff }
  56
  57 #define QEMU_PIXMAN_COLOR_BLACK QEMU_PIXMAN_COLOR(0x00, 0x00, 0x00)
  58 #define QEMU_PIXMAN_COLOR_GRAY QEMU_PIXMAN_COLOR(0xaa, 0xaa, 0xaa)
  59
  60 /* -------------------------------------------------------------------- */
  61
  62 typedef struct PixelFormat {
  63     uint8_t bits_per_pixel;
  64     uint8_t bytes_per_pixel;
  65     uint8_t depth; /* color depth in bits */
  66     uint32_t rmask, gmask, bmask, amask;
  67     uint8_t rshift, gshift, bshift, ashift;
  68     uint8_t rmax, gmax, bmax, amax;
  69     uint8_t rbits, gbits, bbits, abits;
  70 } PixelFormat;
  71
  72 PixelFormat qemu_pixelformat_from_pixman(pixman_format_code_t format);
  73 pixman_format_code_t qemu_default_pixman_format(int bpp, bool native_endian);
  74 pixman_format_code_t qemu_drm_format_to_pixman(uint32_t drm_format);
  75 uint32_t qemu_pixman_to_drm_format(pixman_format_code_t pixman);
  76 int qemu_pixman_get_type(int rshift, int gshift, int bshift);
  77 pixman_format_code_t qemu_pixman_get_format(PixelFormat *pf);
  78 bool qemu_pixman_check_format(DisplayChangeListener *dcl,
  79                               pixman_format_code_t format);
  80
  81 pixman_image_t *qemu_pixman_linebuf_create(pixman_format_code_t format,
  82                                            int width);
  83 void qemu_pixman_linebuf_fill(pixman_image_t *linebuf, pixman_image_t *fb,
  84                               int width, int x, int y);
  85 pixman_image_t *qemu_pixman_mirror_create(pixman_format_code_t format,
  86                                           pixman_image_t *image);
  87 void qemu_pixman_image_unref(pixman_image_t *image);
  88
  89 pixman_image_t *qemu_pixman_glyph_from_vgafont(int height, const uint8_t *font,
  90                                                unsigned int ch);
  91 void qemu_pixman_glyph_render(pixman_image_t *glyph,
  92                               pixman_image_t *surface,
  93                               pixman_color_t *fgcol,
  94                               pixman_color_t *bgcol,
  95                               int x, int y, int cw, int ch);
  96
  97 G_DEFINE_AUTOPTR_CLEANUP_FUNC(pixman_image_t, qemu_pixman_image_unref)
  98
  99 #endif /* QEMU_PIXMAN_H */