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#include <stdio.h>
#include <unistd.h>
#include <algorithm>
#include <kms++/kms++.h>
#include <kms++util/kms++util.h>
#include <xf86drmMode.h>
using namespace std;
using namespace kms;
static const char* usage_str =
"Usage: kmsblank [OPTION]...\n\n"
"Blank screen(s)\n\n"
"Options:\n"
" --device=DEVICE DEVICE is the path to DRM card to open\n"
" -c, --connector=CONN CONN is <connector>\n"
" -t, --time=TIME blank/unblank in TIME intervals\n"
"\n"
"<connector> can be given by index (<idx>) or id (@<id>).\n"
"<connector> can also be given by name.\n";
static void usage()
{
puts(usage_str);
}
int main(int argc, char** argv)
{
string dev_path;
vector<string> conn_strs;
uint32_t time = 0;
OptionSet optionset = {
Option("|device=", [&dev_path](string s) {
dev_path = s;
}),
Option("c|connector=", [&conn_strs](string str) {
conn_strs.push_back(str);
}),
Option("t|time=", [&time](string str) {
time = stoul(str);
}),
Option("h|help", []() {
usage();
exit(-1);
}),
};
optionset.parse(argc, argv);
if (optionset.params().size() > 0) {
usage();
exit(-1);
}
Card card(dev_path);
ResourceManager resman(card);
vector<Connector*> conns;
if (conn_strs.size() > 0) {
for (string s : conn_strs) {
auto c = resman.reserve_connector(s);
if (!c)
EXIT("Failed to resolve connector '%s'", s.c_str());
conns.push_back(c);
}
} else {
conns = card.get_connectors();
}
bool blank = true;
while (true) {
for (Connector* conn : conns) {
if (conn->connector_type() == DRM_MODE_CONNECTOR_WRITEBACK)
continue;
if (!conn->connected()) {
printf("Connector %u not connected\n", conn->idx());
continue;
}
printf("Connector %u: %sblank\n", conn->idx(), blank ? "" : "un");
int r = conn->set_prop_value("DPMS", blank ? 3 : 0);
if (r)
EXIT("Failed to set DPMS: %d", r);
}
if (time == 0)
break;
usleep(1000 * time);
blank = !blank;
}
printf("press enter to exit\n");
getchar();
}
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