1 #include <stdio.h>
2 #include <unistd.h>
3 #include <algorithm>
5 #include <kms++.h>
6 #include <kms++util.h>
7 #include "opts.h"
9 using namespace std;
10 using namespace kms;
12 static const char* usage_str =
13 "Usage: kmsblank [OPTION]...\n\n"
14 "Blank screen(s)\n\n"
15 "Options:\n"
16 " --device=DEVICE DEVICE is the path to DRM card to open\n"
17 " -c, --connector=CONN CONN is <connector>\n"
18 " -t, --time=TIME blank/unblank in TIME intervals\n"
19 "\n"
20 "<connector> can be given by index (<idx>) or id (@<id>).\n"
21 "<connector> can also be given by name.\n"
22 ;
24 static void usage()
25 {
26 puts(usage_str);
27 }
29 int main(int argc, char **argv)
30 {
31 string dev_path = "/dev/dri/card0";
33 vector<string> conn_strs;
34 uint32_t time = 0;
36 OptionSet optionset = {
37 Option("|device=", [&dev_path](string s)
38 {
39 dev_path = s;
40 }),
41 Option("c|connector=", [&conn_strs](string str)
42 {
43 conn_strs.push_back(str);
44 }),
45 Option("t|time=", [&time](string str)
46 {
47 time = stoul(str);
48 }),
49 Option("h|help", []()
50 {
51 usage();
52 exit(-1);
53 }),
54 };
56 optionset.parse(argc, argv);
58 if (optionset.params().size() > 0) {
59 usage();
60 exit(-1);
61 }
63 Card card(dev_path);
65 vector<Connector*> conns;
67 if (conn_strs.size() > 0) {
68 for (string s : conn_strs) {
69 auto c = resolve_connector(card, s);
70 if (!c)
71 EXIT("Failed to resolve connector '%s'", s.c_str());
72 conns.push_back(c);
73 }
74 } else {
75 conns = card.get_connectors();
76 }
78 bool blank = true;
80 while (true) {
81 for (Connector* conn : conns) {
82 if (!conn->connected()) {
83 printf("Connector %u not connected\n", conn->idx());
84 continue;
85 }
87 printf("Connector %u: %sblank\n", conn->idx(), blank ? "" : "un");
88 int r = conn->set_prop_value("DPMS", blank ? 3 : 0);
89 if (r)
90 EXIT("Failed to set DPMS: %d", r);
91 }
93 if (time == 0)
94 break;
96 usleep(1000 * time);
98 blank = !blank;
99 }
101 printf("press enter to exit\n");
103 getchar();
104 }