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gbm_buffer.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 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 General Public License for more details.
12  *
13  * You should have received a copy of the GNU General Public License
14  * along with this program. If not, see <http://www.gnu.org/licenses/>.
15  *
16  * Authored by:
17  * Christopher James Halse Rogers <christopher.halse.rogers@canonical.com>
18  */
19 
20 #ifndef MIR_GRAPHICS_GBM_GBM_BUFFER_H_
21 #define MIR_GRAPHICS_GBM_GBM_BUFFER_H_
22 
24 
25 #include <gbm.h>
26 
27 #include <memory>
28 #include <limits>
29 
30 namespace mir
31 {
32 namespace graphics
33 {
34 namespace gbm
35 {
36 
38 {
39  struct gbm_bo *bo;
40 };
41 
44 enum : uint32_t { invalid_gbm_format = std::numeric_limits<uint32_t>::max() };
45 
46 class BufferTextureBinder;
47 
48 class GBMBuffer: public BufferBasic
49 {
50 public:
51  GBMBuffer(std::shared_ptr<gbm_bo> const& handle,
52  uint32_t bo_flags,
53  std::unique_ptr<BufferTextureBinder> texture_binder);
54  GBMBuffer(const GBMBuffer&) = delete;
55  ~GBMBuffer();
56 
57  GBMBuffer& operator=(const GBMBuffer&) = delete;
58 
59  virtual geometry::Size size() const;
60 
61  virtual geometry::Stride stride() const;
62 
63  virtual geometry::PixelFormat pixel_format() const;
64 
65  virtual std::shared_ptr<MirNativeBuffer> native_buffer_handle() const;
66 
67  virtual void bind_to_texture();
68 
69  bool can_bypass() const override;
70 
71 private:
72  std::shared_ptr<gbm_bo> const gbm_handle;
73  uint32_t bo_flags;
74  std::unique_ptr<BufferTextureBinder> const texture_binder;
75  int prime_fd;
76 };
77 
78 }
79 }
80 }
81 
82 
83 #endif // MIR_GRAPHICS_GBM_GBM_BUFFER_H_

Copyright © 2012,2013 Canonical Ltd.
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