xref: /openbmc/qemu/ui/qemu-pixman.c (revision 3588185b)
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 "ui/qemu-pixman.h"
7 
8 int qemu_pixman_get_type(int rshift, int gshift, int bshift)
9 {
10     int type = PIXMAN_TYPE_OTHER;
11 
12     if (rshift > gshift && gshift > bshift) {
13         if (bshift == 0) {
14             type = PIXMAN_TYPE_ARGB;
15         } else {
16 #if PIXMAN_VERSION >= PIXMAN_VERSION_ENCODE(0, 21, 8)
17             type = PIXMAN_TYPE_RGBA;
18 #endif
19         }
20     } else if (rshift < gshift && gshift < bshift) {
21         if (rshift == 0) {
22             type = PIXMAN_TYPE_ABGR;
23         } else {
24 #if PIXMAN_VERSION >= PIXMAN_VERSION_ENCODE(0, 16, 0)
25             type = PIXMAN_TYPE_BGRA;
26 #endif
27         }
28     }
29     return type;
30 }
31 
32 pixman_format_code_t qemu_pixman_get_format(PixelFormat *pf)
33 {
34     pixman_format_code_t format;
35     int type;
36 
37     type = qemu_pixman_get_type(pf->rshift, pf->gshift, pf->bshift);
38     format = PIXMAN_FORMAT(pf->bits_per_pixel, type,
39                            pf->abits, pf->rbits, pf->gbits, pf->bbits);
40     if (!pixman_format_supported_source(format)) {
41         return 0;
42     }
43     return format;
44 }
45 
46 pixman_image_t *qemu_pixman_linebuf_create(pixman_format_code_t format,
47                                            int width)
48 {
49     pixman_image_t *image = pixman_image_create_bits(format, width, 1, NULL, 0);
50     assert(image != NULL);
51     return image;
52 }
53 
54 void qemu_pixman_linebuf_fill(pixman_image_t *linebuf, pixman_image_t *fb,
55                               int width, int x, int y)
56 {
57     pixman_image_composite(PIXMAN_OP_SRC, fb, NULL, linebuf,
58                            x, y, 0, 0, 0, 0, width, 1);
59 }
60 
61 pixman_image_t *qemu_pixman_mirror_create(pixman_format_code_t format,
62                                           pixman_image_t *image)
63 {
64     pixman_image_t *mirror;
65 
66     mirror = pixman_image_create_bits(format,
67                                       pixman_image_get_width(image),
68                                       pixman_image_get_height(image),
69                                       NULL,
70                                       pixman_image_get_stride(image));
71     return mirror;
72 }
73 
74 void qemu_pixman_image_unref(pixman_image_t *image)
75 {
76     if (image == NULL) {
77         return;
78     }
79     pixman_image_unref(image);
80 }
81