qemu-pixman.c

   1 #include "qemu-pixman.h"
   2
   3 int qemu_pixman_get_type(int rshift, int gshift, int bshift)
   4 {
   5     int type = PIXMAN_TYPE_OTHER;
   6
   7     if (rshift > gshift && gshift > bshift) {
   8         if (bshift == 0) {
   9             type = PIXMAN_TYPE_ARGB;
  10         } else {
  11 #if PIXMAN_VERSION >= PIXMAN_VERSION_ENCODE(0, 21, 8)
  12             type = PIXMAN_TYPE_RGBA;
  13 #endif
  14         }
  15     } else if (rshift < gshift && gshift < bshift) {
  16         if (rshift == 0) {
  17             type = PIXMAN_TYPE_ABGR;
  18         } else {
  19             type = PIXMAN_TYPE_BGRA;
  20         }
  21     }
  22     return type;
  23 }
  24
  25 pixman_format_code_t qemu_pixman_get_format(PixelFormat *pf)
  26 {
  27     pixman_format_code_t format;
  28     int type;
  29
  30     type = qemu_pixman_get_type(pf->rshift, pf->gshift, pf->bshift);
  31     format = PIXMAN_FORMAT(pf->bits_per_pixel, type,
  32                            pf->abits, pf->rbits, pf->gbits, pf->bbits);
  33     if (!pixman_format_supported_source(format)) {
  34         return 0;
  35     }
  36     return format;
  37 }
  38
  39 pixman_image_t *qemu_pixman_linebuf_create(pixman_format_code_t format,
  40                                            int width)
  41 {
  42     pixman_image_t *image = pixman_image_create_bits(format, width, 1, NULL, 0);
  43     assert(image != NULL);
  44     return image;
  45 }
  46
  47 void qemu_pixman_linebuf_fill(pixman_image_t *linebuf, pixman_image_t *fb,
  48                               int width, int y)
  49 {
  50     pixman_image_composite(PIXMAN_OP_SRC, fb, NULL, linebuf,
  51                            0, y, 0, 0, 0, 0, width, 1);
  52 }
  53
  54 void qemu_pixman_image_unref(pixman_image_t *image)
  55 {
  56     if (image == NULL) {
  57         return;
  58     }
  59     pixman_image_unref(image);
  60 }