#include <stdio.h>
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#include <unistd.h>
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#include <algorithm>
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#include <kms++/kms++.h>
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#include <kms++util/kms++util.h>
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using namespace std;
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using namespace kms;
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static const char* usage_str =
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"Usage: kmsblank [OPTION]...\n\n"
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"Blank screen(s)\n\n"
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"Options:\n"
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" --device=DEVICE DEVICE is the path to DRM card to open\n"
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" -c, --connector=CONN CONN is <connector>\n"
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" -t, --time=TIME blank/unblank in TIME intervals\n"
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"\n"
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"<connector> can be given by index (<idx>) or id (@<id>).\n"
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"<connector> can also be given by name.\n"
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;
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static void usage()
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{
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puts(usage_str);
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}
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int main(int argc, char **argv)
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{
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string dev_path = "/dev/dri/card0";
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vector<string> conn_strs;
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uint32_t time = 0;
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OptionSet optionset = {
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Option("|device=", [&dev_path](string s)
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{
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dev_path = s;
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}),
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Option("c|connector=", [&conn_strs](string str)
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{
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conn_strs.push_back(str);
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}),
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Option("t|time=", [&time](string str)
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{
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time = stoul(str);
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}),
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Option("h|help", []()
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{
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usage();
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exit(-1);
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}),
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};
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optionset.parse(argc, argv);
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if (optionset.params().size() > 0) {
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usage();
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exit(-1);
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}
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Card card(dev_path);
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ResourceManager resman(card);
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vector<Connector*> conns;
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if (conn_strs.size() > 0) {
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for (string s : conn_strs) {
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auto c = resman.reserve_connector(s);
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if (!c)
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EXIT("Failed to resolve connector '%s'", s.c_str());
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conns.push_back(c);
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}
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} else {
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conns = card.get_connectors();
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}
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bool blank = true;
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while (true) {
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for (Connector* conn : conns) {
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if (!conn->connected()) {
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printf("Connector %u not connected\n", conn->idx());
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continue;
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}
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printf("Connector %u: %sblank\n", conn->idx(), blank ? "" : "un");
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int r = conn->set_prop_value("DPMS", blank ? 3 : 0);
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if (r)
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EXIT("Failed to set DPMS: %d", r);
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}
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if (time == 0)
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break;
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usleep(1000 * time);
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blank = !blank;
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}
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printf("press enter to exit\n");
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getchar();
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}
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