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authorGerd Hoffmann <kraxel@redhat.com>2014-06-18 09:00:00 +0200
committerGerd Hoffmann <kraxel@redhat.com>2014-09-05 13:27:11 +0200
commita93a3af9ec44710b2f7de8eb1c36f93ee3ec0d10 (patch)
tree62ede671edfca6054d21d4a0f97a45ab5e9b52d8 /ui
parentfd884c07658d02a96a882b8457d6d7a5cd71a407 (diff)
console: add qemu_pixelformat_from_pixman
Function to convert pixman format codes to qemu PixelFormat. [ Benjamin Herrenschmidt: fix BGRA+RGBA shifts ] Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'ui')
-rw-r--r--ui/qemu-pixman.c56
1 files changed, 56 insertions, 0 deletions
diff --git a/ui/qemu-pixman.c b/ui/qemu-pixman.c
index 254bd8ce10..bdc1439e09 100644
--- a/ui/qemu-pixman.c
+++ b/ui/qemu-pixman.c
@@ -6,6 +6,62 @@
#include "qemu-common.h"
#include "ui/console.h"
+PixelFormat qemu_pixelformat_from_pixman(pixman_format_code_t format)
+{
+ PixelFormat pf;
+ uint8_t bpp;
+
+ bpp = pf.bits_per_pixel = PIXMAN_FORMAT_BPP(format);
+ pf.bytes_per_pixel = PIXMAN_FORMAT_BPP(format) / 8;
+ pf.depth = PIXMAN_FORMAT_DEPTH(format);
+
+ pf.abits = PIXMAN_FORMAT_A(format);
+ pf.rbits = PIXMAN_FORMAT_R(format);
+ pf.gbits = PIXMAN_FORMAT_G(format);
+ pf.bbits = PIXMAN_FORMAT_B(format);
+
+ switch (PIXMAN_FORMAT_TYPE(format)) {
+ case PIXMAN_TYPE_ARGB:
+ pf.ashift = pf.bbits + pf.gbits + pf.rbits;
+ pf.rshift = pf.bbits + pf.gbits;
+ pf.gshift = pf.bbits;
+ pf.bshift = 0;
+ break;
+ case PIXMAN_TYPE_ABGR:
+ pf.ashift = pf.rbits + pf.gbits + pf.bbits;
+ pf.bshift = pf.rbits + pf.gbits;
+ pf.gshift = pf.rbits;
+ pf.rshift = 0;
+ break;
+ case PIXMAN_TYPE_BGRA:
+ pf.bshift = bpp - pf.bbits;
+ pf.gshift = bpp - (pf.bbits + pf.gbits);
+ pf.rshift = bpp - (pf.bbits + pf.gbits + pf.rbits);
+ pf.ashift = 0;
+ break;
+ case PIXMAN_TYPE_RGBA:
+ pf.rshift = bpp - pf.rbits;
+ pf.gshift = bpp - (pf.rbits + pf.gbits);
+ pf.bshift = bpp - (pf.rbits + pf.gbits + pf.bbits);
+ pf.ashift = 0;
+ break;
+ default:
+ g_assert_not_reached();
+ break;
+ }
+
+ pf.amax = (1 << pf.abits) - 1;
+ pf.rmax = (1 << pf.rbits) - 1;
+ pf.gmax = (1 << pf.gbits) - 1;
+ pf.bmax = (1 << pf.bbits) - 1;
+ pf.amask = pf.amax << pf.ashift;
+ pf.rmask = pf.rmax << pf.rshift;
+ pf.gmask = pf.gmax << pf.gshift;
+ pf.bmask = pf.bmax << pf.bshift;
+
+ return pf;
+}
+
int qemu_pixman_get_type(int rshift, int gshift, int bshift)
{
int type = PIXMAN_TYPE_OTHER;