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
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
|
/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2018, Google Inc.
*
* camera.h - Camera object interface
*/
#ifndef __LIBCAMERA_CAMERA_H__
#define __LIBCAMERA_CAMERA_H__
#include <map>
#include <memory>
#include <set>
#include <string>
#include <libcamera/request.h>
#include <libcamera/signal.h>
#include <libcamera/stream.h>
namespace libcamera {
class Buffer;
class PipelineHandler;
class Request;
class CameraConfiguration
{
public:
using iterator = std::vector<StreamConfiguration>::iterator;
using const_iterator = std::vector<StreamConfiguration>::const_iterator;
CameraConfiguration();
void addConfiguration(const StreamConfiguration &cfg);
bool isValid() const;
StreamConfiguration &at(unsigned int index);
const StreamConfiguration &at(unsigned int index) const;
StreamConfiguration &operator[](unsigned int index)
{
return at(index);
}
const StreamConfiguration &operator[](unsigned int index) const
{
return at(index);
}
iterator begin();
const_iterator begin() const;
iterator end();
const_iterator end() const;
bool empty() const;
std::size_t size() const;
private:
std::vector<StreamConfiguration> config_;
};
class Camera final
{
public:
static std::shared_ptr<Camera> create(PipelineHandler *pipe,
const std::string &name,
const std::set<Stream *> &streams);
Camera(const Camera &) = delete;
Camera &operator=(const Camera &) = delete;
const std::string &name() const;
Signal<Request *, Buffer *> bufferCompleted;
Signal<Request *, const std::map<Stream *, Buffer *> &> requestCompleted;
Signal<Camera *> disconnected;
int acquire();
int release();
const std::set<Stream *> &streams() const;
CameraConfiguration generateConfiguration(const StreamRoles &roles);
int configure(CameraConfiguration &config);
int allocateBuffers();
int freeBuffers();
Request *createRequest();
int queueRequest(Request *request);
int start();
int stop();
private:
enum State {
CameraAvailable,
CameraAcquired,
CameraConfigured,
CameraPrepared,
CameraRunning,
};
Camera(PipelineHandler *pipe, const std::string &name);
~Camera();
bool stateBetween(State low, State high) const;
bool stateIs(State state) const;
friend class PipelineHandler;
void disconnect();
void requestComplete(Request *request);
std::shared_ptr<PipelineHandler> pipe_;
std::string name_;
std::set<Stream *> streams_;
std::set<Stream *> activeStreams_;
bool disconnected_;
State state_;
};
} /* namespace libcamera */
#endif /* __LIBCAMERA_CAMERA_H__ */
|