src/cam/file_sink.cpp


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

/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * Copyright (C) 2019, Google Inc.
 *
 * file_sink.cpp - File Sink
 */

#include <assert.h>
#include <fcntl.h>
#include <iomanip>
#include <iostream>
#include <sstream>
#include <string.h>
#include <unistd.h>

#include <libcamera/camera.h>

#include "file_sink.h"
#include "image.h"

using namespace libcamera;

FileSink::FileSink(const std::map<const libcamera::Stream *, std::string> &streamNames,
		   const std::string &pattern)
	: streamNames_(streamNames), pattern_(pattern)
{
}

FileSink::~FileSink()
{
}

int FileSink::configure(const libcamera::CameraConfiguration &config)
{
	int ret = FrameSink::configure(config);
	if (ret < 0)
		return ret;

	return 0;
}

void FileSink::mapBuffer(FrameBuffer *buffer)
{
	std::unique_ptr<Image> image =
		Image::fromFrameBuffer(buffer, Image::MapMode::ReadOnly);
	assert(image != nullptr);

	mappedBuffers_[buffer] = std::move(image);
}

bool FileSink::processRequest(Request *request)
{
	for (auto [stream, buffer] : request->buffers())
		writeBuffer(stream, buffer);

	return true;
}

void FileSink::writeBuffer(const Stream *stream, FrameBuffer *buffer)
{
	std::string filename;
	size_t pos;
	int fd, ret = 0;

	if (!pattern_.empty())
		filename = pattern_;

	if (filename.empty() || filename.back() == '/')
		filename += "frame-#.bin";

	pos = filename.find_first_of('#');
	if (pos != std::string::npos) {
		std::stringstream ss;
		ss << streamNames_[stream] << "-" << std::setw(6)
		   << std::setfill('0') << buffer->metadata().sequence;