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pixel_format.h
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1 /*
2  * Copyright © 2012 Canonical Ltd.
3  *
4  * This program is free software: you can redistribute it and/or modify it
5  * under the terms of the GNU Lesser General Public License version 3,
6  * as published by the Free Software Foundation.
7  *
8  * This program is distributed in the hope that it will be useful,
9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11  * GNU Lesser General Public License for more details.
12  *
13  * You should have received a copy of the GNU Lesser General Public License
14  * along with this program. If not, see <http://www.gnu.org/licenses/>.
15  *
16  * Authored by: Alan Griffiths <alan@octopull.co.uk>
17  */
18 
19 
20 #ifndef MIR_COMPOSITOR_PIXEL_FORMAT_H_
21 #define MIR_COMPOSITOR_PIXEL_FORMAT_H_
22 
23 #include <cstdint>
24 #include <cstddef>
25 
26 namespace mir
27 {
28 namespace geometry
29 {
30 enum class PixelFormat : uint32_t
31 {
32  invalid,
33  abgr_8888,
34  xbgr_8888,
35  argb_8888,
36  xrgb_8888,
37  bgr_888
38 };
39 
40 static inline size_t bytes_per_pixel(PixelFormat fmt)
41 {
42  return (fmt == PixelFormat::bgr_888) ? 3 : 4;
43 }
44 
45 static inline bool has_alpha(PixelFormat fmt)
46 {
47  return (fmt == PixelFormat::abgr_8888) ||
48  (fmt == PixelFormat::argb_8888);
49 }
50 
51 }
52 }
53 
54 #endif /* MIR_COMPOSITOR_PIXEL_FORMAT_H_ */

Copyright © 2012,2013 Canonical Ltd.
Generated on Wed Oct 30 18:52:19 UTC 2013