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 #ifdef CONFIG_PIXMAN
  10 #include <pixman.h>
  11 #else
  12 #include "pixman-minimal.h"
  13 #endif
  14
  15 #include "qapi/error.h"
  16
  17 /*
  18  * pixman image formats are defined to be native endian,
  19  * that means host byte order on qemu.  So we go define
  20  * fixed formats here for cases where it is needed, like
  21  * feeding libjpeg / libpng and writing screenshots.
  22  */
  23
  24 #if HOST_BIG_ENDIAN
  25 # define PIXMAN_BE_r8g8b8     PIXMAN_r8g8b8
  26 # define PIXMAN_BE_x8r8g8b8   PIXMAN_x8r8g8b8
  27 # define PIXMAN_BE_a8r8g8b8   PIXMAN_a8r8g8b8
  28 # define PIXMAN_BE_b8g8r8x8   PIXMAN_b8g8r8x8
  29 # define PIXMAN_BE_b8g8r8a8   PIXMAN_b8g8r8a8
  30 # define PIXMAN_BE_r8g8b8x8   PIXMAN_r8g8b8x8
  31 # define PIXMAN_BE_r8g8b8a8   PIXMAN_r8g8b8a8
  32 # define PIXMAN_BE_x8b8g8r8   PIXMAN_x8b8g8r8
  33 # define PIXMAN_BE_a8b8g8r8   PIXMAN_a8b8g8r8
  34 # define PIXMAN_LE_r8g8b8     PIXMAN_b8g8r8
  35 # define PIXMAN_LE_a8r8g8b8   PIXMAN_b8g8r8a8
  36 # define PIXMAN_LE_x8r8g8b8   PIXMAN_b8g8r8x8
  37 # define PIXMAN_LE_a8b8g8r8   PIXMAN_r8g8b8a8
  38 # define PIXMAN_LE_x8b8g8r8   PIXMAN_r8g8b8x8
  39 #else
  40 # define PIXMAN_BE_r8g8b8     PIXMAN_b8g8r8
  41 # define PIXMAN_BE_x8r8g8b8   PIXMAN_b8g8r8x8
  42 # define PIXMAN_BE_a8r8g8b8   PIXMAN_b8g8r8a8
  43 # define PIXMAN_BE_b8g8r8x8   PIXMAN_x8r8g8b8
  44 # define PIXMAN_BE_b8g8r8a8   PIXMAN_a8r8g8b8
  45 # define PIXMAN_BE_r8g8b8x8   PIXMAN_x8b8g8r8
  46 # define PIXMAN_BE_r8g8b8a8   PIXMAN_a8b8g8r8
  47 # define PIXMAN_BE_x8b8g8r8   PIXMAN_r8g8b8x8
  48 # define PIXMAN_BE_a8b8g8r8   PIXMAN_r8g8b8a8
  49 # define PIXMAN_LE_r8g8b8     PIXMAN_r8g8b8
  50 # define PIXMAN_LE_a8r8g8b8   PIXMAN_a8r8g8b8
  51 # define PIXMAN_LE_x8r8g8b8   PIXMAN_x8r8g8b8
  52 # define PIXMAN_LE_a8b8g8r8   PIXMAN_a8b8g8r8
  53 # define PIXMAN_LE_x8b8g8r8   PIXMAN_x8b8g8r8
  54 #endif
  55
  56 #define QEMU_PIXMAN_COLOR(r, g, b)                                               \
  57     { .red = r << 8, .green = g << 8, .blue = b << 8, .alpha = 0xffff }
  58
  59 #define QEMU_PIXMAN_COLOR_BLACK QEMU_PIXMAN_COLOR(0x00, 0x00, 0x00)
  60 #define QEMU_PIXMAN_COLOR_GRAY QEMU_PIXMAN_COLOR(0xaa, 0xaa, 0xaa)
  61
  62 /* -------------------------------------------------------------------- */
  63
  64 typedef struct PixelFormat {
  65     uint8_t bits_per_pixel;
  66     uint8_t bytes_per_pixel;
  67     uint8_t depth; /* color depth in bits */
  68     uint32_t rmask, gmask, bmask, amask;
  69     uint8_t rshift, gshift, bshift, ashift;
  70     uint8_t rmax, gmax, bmax, amax;
  71     uint8_t rbits, gbits, bbits, abits;
  72 } PixelFormat;
  73
  74 PixelFormat qemu_pixelformat_from_pixman(pixman_format_code_t format);
  75 pixman_format_code_t qemu_default_pixman_format(int bpp, bool native_endian);
  76 pixman_format_code_t qemu_drm_format_to_pixman(uint32_t drm_format);
  77 uint32_t qemu_pixman_to_drm_format(pixman_format_code_t pixman);
  78 int qemu_pixman_get_type(int rshift, int gshift, int bshift);
  79 bool qemu_pixman_check_format(DisplayChangeListener *dcl,
  80                               pixman_format_code_t format);
  81
  82 #ifdef CONFIG_PIXMAN
  83 pixman_format_code_t qemu_pixman_get_format(PixelFormat *pf);
  84 pixman_image_t *qemu_pixman_linebuf_create(pixman_format_code_t format,
  85                                            int width);
  86 void qemu_pixman_linebuf_fill(pixman_image_t *linebuf, pixman_image_t *fb,
  87                               int width, int x, int y);
  88 pixman_image_t *qemu_pixman_mirror_create(pixman_format_code_t format,
  89                                           pixman_image_t *image);
  90
  91 pixman_image_t *qemu_pixman_glyph_from_vgafont(int height, const uint8_t *font,
  92                                                unsigned int ch);
  93 void qemu_pixman_glyph_render(pixman_image_t *glyph,
  94                               pixman_image_t *surface,
  95                               pixman_color_t *fgcol,
  96                               pixman_color_t *bgcol,
  97                               int x, int y, int cw, int ch);
  98 #endif
  99
 100 void qemu_pixman_image_unref(pixman_image_t *image);
 101
 102 #ifdef WIN32
 103 typedef HANDLE qemu_pixman_shareable;
 104 #define SHAREABLE_NONE (NULL)
 105 #define SHAREABLE_TO_PTR(handle) (handle)
 106 #define PTR_TO_SHAREABLE(ptr) (ptr)
 107 #else
 108 typedef int qemu_pixman_shareable;
 109 #define SHAREABLE_NONE (-1)
 110 #define SHAREABLE_TO_PTR(handle) GINT_TO_POINTER(handle)
 111 #define PTR_TO_SHAREABLE(ptr) GPOINTER_TO_INT(ptr)
 112 #endif
 113
 114 bool qemu_pixman_image_new_shareable(
 115     pixman_image_t **image,
 116     qemu_pixman_shareable *handle,
 117     const char *name,
 118     pixman_format_code_t format,
 119     int width,
 120     int height,
 121     int rowstride_bytes,
 122     Error **errp);
 123
 124 G_DEFINE_AUTOPTR_CLEANUP_FUNC(pixman_image_t, qemu_pixman_image_unref)
 125
 126 #endif /* QEMU_PIXMAN_H */