blob: 61f755f0fddd9245d3ac295ac002907439e99b1b (
plain)
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
|
/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2020, Raspberry Pi Ltd
*
* delayed_controls.h - Helper to deal with controls that take effect with a delay
*
* Note: This has been forked from the libcamera core implementation.
*/
#pragma once
#include <stdint.h>
#include <unordered_map>
#include <utility>
#include <libcamera/controls.h>
namespace libcamera {
class V4L2Device;
namespace RPi {
class DelayedControls
{
public:
struct ControlParams {
unsigned int delay;
bool priorityWrite;
};
DelayedControls(V4L2Device *device,
const std::unordered_map<uint32_t, ControlParams> &controlParams);
void reset(unsigned int cookie);
bool push(const ControlList &controls, unsigned int cookie);
std::pair<ControlList, unsigned int> get(uint32_t sequence);
void applyControls(uint32_t sequence);
private:
class Info : public ControlValue
{
public:
Info()
: updated(false)
{
}
Info(const ControlValue &v, bool updated_ = true)
: ControlValue(v), updated(updated_)
{
}
bool updated;
};
static constexpr int listSize = 16;
template<typename T>
class RingBuffer : public std::array<T, listSize>
{
public:
T &operator[](unsigned int index)
{
return std::array<T, listSize>::operator[](index % listSize);
}
const T &operator[](unsigned int index) const
{
return std::array<T, listSize>::operator[](index % listSize);
}
};
V4L2Device *device_;
std::unordered_map<const ControlId *, ControlParams> controlParams_;
unsigned int maxDelay_;
uint32_t queueCount_;
uint32_t writeCount_;
std::unordered_map<const ControlId *, RingBuffer<Info>> values_;
RingBuffer<unsigned int> cookies_;
};
} /* namespace RPi */
} /* namespace libcamera */
|