1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
|
// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_GFX_OZONE_IMPL_DRI_WRAPPER_H_
#define UI_GFX_OZONE_IMPL_DRI_WRAPPER_H_
#include <stdint.h>
#include "base/basictypes.h"
typedef struct _drmModeCrtc drmModeCrtc;
typedef struct _drmModeModeInfo drmModeModeInfo;
namespace gfx {
// Wraps DRM calls into a nice interface. Used to provide different
// implementations of the DRM calls. For the actual implementation the DRM API
// would be called. In unit tests this interface would be stubbed.
class DriWrapper {
public:
DriWrapper(const char* device_path);
virtual ~DriWrapper();
// Get the CRTC state. This is generally used to save state before using the
// CRTC. When the user finishes using the CRTC, the user should restore the
// CRTC to it's initial state. Use |SetCrtc| to restore the state.
virtual drmModeCrtc* GetCrtc(uint32_t crtc_id);
// Frees the CRTC mode object.
virtual void FreeCrtc(drmModeCrtc* crtc);
// Used to configure CRTC with ID |crtc_id| to use the connector in
// |connectors|. The CRTC will be configured with mode |mode| and will display
// the framebuffer with ID |framebuffer|. Before being able to display the
// framebuffer, it should be registered with the CRTC using |AddFramebuffer|.
virtual bool SetCrtc(uint32_t crtc_id,
uint32_t framebuffer,
uint32_t* connectors,
drmModeModeInfo* mode);
// Used to set a specific configuration to the CRTC. Normally this function
// would be called with a CRTC saved state (from |GetCrtc|) to restore it to
// its original configuration.
virtual bool SetCrtc(drmModeCrtc* crtc, uint32_t* connectors);
// Register a buffer with the CRTC. On successful registration, the CRTC will
// assign a framebuffer ID to |framebuffer|.
virtual bool AddFramebuffer(const drmModeModeInfo& mode,
uint8_t depth,
uint8_t bpp,
uint32_t stride,
uint32_t handle,
uint32_t* framebuffer);
// Deregister the given |framebuffer|.
virtual bool RemoveFramebuffer(uint32_t framebuffer);
// Schedules a pageflip for CRTC |crtc_id|. This function will return
// immediately. Upon completion of the pageflip event, the CRTC will be
// displaying the buffer with ID |framebuffer| and will have a DRM event
// queued on |fd_|. |data| is a generic pointer to some information the user
// will receive when processing the pageflip event.
virtual bool PageFlip(uint32_t crtc_id, uint32_t framebuffer, void* data);
// Sets the value of property with ID |property_id| to |value|. The property
// is applied to the connector with ID |connector_id|.
virtual bool ConnectorSetProperty(uint32_t connector_id,
uint32_t property_id,
uint64_t value);
int get_fd() const { return fd_; }
protected:
// The file descriptor associated with this wrapper. All DRM operations will
// be performed using this FD.
int fd_;
private:
DISALLOW_COPY_AND_ASSIGN(DriWrapper);
};
} // namespace gfx
#endif // UI_GFX_OZONE_IMPL_DRI_WRAPPER_H_
|
