diff options
| author | Gerd Hoffmann <kraxel@redhat.com> | 2014-06-18 09:00:00 +0200 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2014-09-05 13:27:11 +0200 |
| commit | a93a3af9ec44710b2f7de8eb1c36f93ee3ec0d10 (patch) | |
| tree | 62ede671edfca6054d21d4a0f97a45ab5e9b52d8 /ui/qemu-pixman.c | |
| parent | fd884c07658d02a96a882b8457d6d7a5cd71a407 (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/qemu-pixman.c')
| -rw-r--r-- | ui/qemu-pixman.c | 56 |
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; |