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
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
|
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2018-2019, Google Inc.
*
* media_device_print_test.cpp - Print out media devices
*/
#include <iostream>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include "media_device.h"
#include "test.h"
using namespace libcamera;
using namespace std;
/*
* MediaDevicePrintTest takes all media devices found in the system and print
* them out to verify correctness.
*
* If no accessible media device is found, the test is skipped.
*/
class MediaDevicePrintTest : public Test
{
public:
MediaDevicePrintTest() { }
~MediaDevicePrintTest() { }
protected:
int init() { return 0; }
int run();
void cleanup() { }
private:
int testMediaDevice(string deviceNode);
void printMediaGraph(const MediaDevice &media, ostream &os);
void printLinkFlags(const MediaLink *link, ostream &os);
void printNode(const MediaPad *pad, ostream &os);
};
void MediaDevicePrintTest::printNode(const MediaPad *pad, ostream &os)
{
const MediaEntity *entity = pad->entity();
os << "\"" << entity->name() << "\"["
<< pad->index() << "]";
}
void MediaDevicePrintTest::printLinkFlags(const MediaLink *link, ostream &os)
{
unsigned int flags = link->flags();
os << " [";
if (flags) {
os << (flags & MEDIA_LNK_FL_ENABLED ? "ENABLED," : "")
<< (flags & MEDIA_LNK_FL_IMMUTABLE ? "IMMUTABLE" : "");
}
os << "]\n";
}
/*
* For each entity in the media graph, printout links directed to its sinks
* and source pads.
*/
void MediaDevicePrintTest::printMediaGraph(const MediaDevice &media, ostream &os)
{
os << "\n" << media.driver() << " - " << media.deviceNode() << "\n\n";
for (auto const &entity : media.entities()) {
os << "\"" << entity->name() << "\"\n";
for (auto const &sink : entity->pads()) {
if (!(sink->flags() & MEDIA_PAD_FL_SINK))
continue;
os << " [" << sink->index() << "]" << ": Sink\n";
for (auto const &link : sink->links()) {
os << "\t";
printNode(sink, os);
os << " <- ";
printNode(link->source(), os);
printLinkFlags(link, os);
}
os << "\n";
}
for (auto const &source : entity->pads()) {
if (!(source->flags() & MEDIA_PAD_FL_SOURCE))
continue;
os << " [" << source->index() << "]" << ": Source\n";
for (auto const &link : source->links()) {
os << "\t";
printNode(source, os);
os << " -> ";
printNode(link->sink(), os);
printLinkFlags(link, os);
}
os << "\n";
}
}
os.flush();
}
/* Test a single media device. */
int MediaDevicePrintTest::testMediaDevice(const string deviceNode)
{
MediaDevice dev(deviceNode);
int ret;
/* Fuzzy open/close sequence. */
ret = dev.open();
if (ret)
return ret;
ret = dev.open();
if (!ret)
return ret;
dev.close();
ret = dev.populate();
if (ret)
return ret;
/* Print out the media graph. */
printMediaGraph(dev, cerr);
return 0;
}
/* Run tests on all media devices. */
#define MAX_MEDIA_DEV 256
int MediaDevicePrintTest::run()
{
const string deviceNode("/dev/media");
unsigned int i;
int ret = 77; /* skip test exit code */
/*
* Run the test sequence on all media device found in the
* system, if any.
*/
for (i = 0; i < MAX_MEDIA_DEV; i++) {
string mediadev = deviceNode + to_string(i);
struct stat pstat = { };
if (stat(mediadev.c_str(), &pstat))
continue;
ret = testMediaDevice(mediadev);
if (ret)
return ret;
}
return ret;
}
TEST_REGISTER(MediaDevicePrintTest);
|
