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
124
125
126
|
/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2020, Laurent Pinchart
* Copyright 2022 NXP
*
* Generic format converter interface
*/
#pragma once
#include <functional>
#include <initializer_list>
#include <map>
#include <memory>
#include <string>
#include <tuple>
#include <utility>
#include <vector>
#include <libcamera/base/class.h>
#include <libcamera/base/flags.h>
#include <libcamera/base/signal.h>
#include <libcamera/geometry.h>
namespace libcamera {
class FrameBuffer;
class MediaDevice;
class PixelFormat;
class Stream;
struct StreamConfiguration;
class Converter
{
public:
enum class Feature {
None = 0,
InputCrop = (1 << 0),
};
using Features = Flags<Feature>;
Converter(MediaDevice *media, Features features = Feature::None);
virtual ~Converter();
virtual int loadConfiguration(const std::string &filename) = 0;
virtual bool isValid() const = 0;
virtual std::vector<PixelFormat> formats(PixelFormat input) = 0;
virtual SizeRange sizes(const Size &input) = 0;
virtual std::tuple<unsigned int, unsigned int>
strideAndFrameSize(const PixelFormat &pixelFormat, const Size &size) = 0;
virtual int configure(const StreamConfiguration &inputCfg,
const std::vector<std::reference_wrapper<StreamConfiguration>> &outputCfgs) = 0;
virtual int exportBuffers(const Stream *stream, unsigned int count,
std::vector<std::unique_ptr<FrameBuffer>> *buffers) = 0;
virtual int start() = 0;
virtual void stop() = 0;
virtual int queueBuffers(FrameBuffer *input,
const std::map<const Stream *, FrameBuffer *> &outputs) = 0;
virtual int setInputCrop(const Stream *stream, Rectangle *rect) = 0;
virtual std::pair<Rectangle, Rectangle> inputCropBounds(const Stream *stream) = 0;
Signal<FrameBuffer *> inputBufferReady;
Signal<FrameBuffer *> outputBufferReady;
const std::string &deviceNode() const { return deviceNode_; }
Features features() const { return features_; }
protected:
Features features_;
private:
std::string deviceNode_;
};
class ConverterFactoryBase
{
public:
ConverterFactoryBase(const std::string name, std::initializer_list<std::string> compatibles);
virtual ~ConverterFactoryBase() = default;
const std::vector<std::string> &compatibles() const { return compatibles_; }
static std::unique_ptr<Converter> create(MediaDevice *media);
static std::vector<ConverterFactoryBase *> &factories();
static std::vector<std::string> names();
private:
LIBCAMERA_DISABLE_COPY_AND_MOVE(ConverterFactoryBase)
static void registerType(ConverterFactoryBase *factory);
virtual std::unique_ptr<Converter> createInstance(MediaDevice *media) const = 0;
std::string name_;
std::vector<std::string> compatibles_;
};
template<typename _Converter>
class ConverterFactory : public ConverterFactoryBase
{
public:
ConverterFactory(const char *name, std::initializer_list<std::string> compatibles)
: ConverterFactoryBase(name, compatibles)
{
}
std::unique_ptr<Converter> createInstance(MediaDevice *media) const override
{
return std::make_unique<_Converter>(media);
}
};
#define REGISTER_CONVERTER(name, converter, compatibles) \
static ConverterFactory<converter> global_##converter##Factory(name, compatibles);
} /* namespace libcamera */
|
