PlayerLink/src/backends/linux.cpp

225 lines
8.0 KiB
C++

#if !defined(_WIN32) && !defined(__APPLE__)
#include <dbus/dbus.h>
#include <iostream>
#include "../backend.hpp"
bool initialized = false;
DBusConnection* conn = nullptr;
std::string getActivePlayer(DBusConnection* conn) {
DBusMessage* msg;
DBusMessageIter args;
DBusError err;
dbus_error_init(&err);
msg = dbus_message_new_method_call("org.freedesktop.DBus", "/org/freedesktop/DBus", "org.freedesktop.DBus",
"ListNames");
DBusMessage* reply = dbus_connection_send_with_reply_and_block(conn, msg, -1, &err);
dbus_message_unref(msg);
if (!reply) {
dbus_error_free(&err);
return "";
}
dbus_message_iter_init(reply, &args);
DBusMessageIter sub;
dbus_message_iter_recurse(&args, &sub);
std::string active_player;
while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING) {
const char* name;
dbus_message_iter_get_basic(&sub, &name);
if (std::string(name).find("org.mpris.MediaPlayer2.") == 0) {
active_player = name;
break;
}
dbus_message_iter_next(&sub);
}
dbus_message_unref(reply);
return active_player;
}
bool isPlayerPaused(DBusConnection* conn, const std::string& player) {
DBusError err;
DBusMessage* msg;
DBusMessage* reply;
DBusMessageIter args;
const char* playbackStatus = nullptr;
dbus_error_init(&err);
msg = dbus_message_new_method_call(player.c_str(), "/org/mpris/MediaPlayer2", "org.freedesktop.DBus.Properties",
"Get");
if (!msg) {
std::cerr << "Message Null" << std::endl;
return false;
}
const char* interface = "org.mpris.MediaPlayer2.Player";
const char* property = "PlaybackStatus";
dbus_message_append_args(msg, DBUS_TYPE_STRING, &interface, DBUS_TYPE_STRING, &property, DBUS_TYPE_INVALID);
reply = dbus_connection_send_with_reply_and_block(conn, msg, -1, &err);
dbus_message_unref(msg);
if (!reply) {
if (dbus_error_is_set(&err))
dbus_error_free(&err);
return false;
}
if (dbus_message_iter_init(reply, &args) && DBUS_TYPE_VARIANT == dbus_message_iter_get_arg_type(&args)) {
DBusMessageIter variant;
dbus_message_iter_recurse(&args, &variant);
dbus_message_iter_get_basic(&variant, &playbackStatus);
}
bool isPaused = (playbackStatus && std::string(playbackStatus) == "Paused");
dbus_message_unref(reply);
return isPaused;
}
void getNowPlaying(DBusConnection* conn, const std::string& player) {
DBusMessage* msg;
DBusMessageIter args;
DBusError err;
dbus_error_init(&err);
msg = dbus_message_new_method_call(player.c_str(), "/org/mpris/MediaPlayer2", "org.freedesktop.DBus.Properties",
"Get");
const char* iface = "org.mpris.MediaPlayer2.Player";
const char* prop = "Metadata";
dbus_message_append_args(msg, DBUS_TYPE_STRING, &iface, DBUS_TYPE_STRING, &prop, DBUS_TYPE_INVALID);
DBusMessage* reply = dbus_connection_send_with_reply_and_block(conn, msg, -1, &err);
dbus_message_unref(msg);
if (!reply) {
std::cerr << "Failed to get metadata: " << (err.message ? err.message : "Unknown error") << std::endl;
dbus_error_free(&err);
return;
}
dbus_message_iter_init(reply, &args);
if (dbus_message_iter_get_arg_type(&args) == DBUS_TYPE_VARIANT) {
DBusMessageIter variant;
dbus_message_iter_recurse(&args, &variant);
if (dbus_message_iter_get_arg_type(&variant) == DBUS_TYPE_ARRAY) {
DBusMessageIter array_iter;
dbus_message_iter_recurse(&variant, &array_iter);
while (dbus_message_iter_get_arg_type(&array_iter) == DBUS_TYPE_DICT_ENTRY) {
DBusMessageIter dict_entry;
dbus_message_iter_recurse(&array_iter, &dict_entry);
const char* key;
dbus_message_iter_get_basic(&dict_entry, &key);
dbus_message_iter_next(&dict_entry);
if (std::string(key) == "xesam:title") {
DBusMessageIter value_variant;
dbus_message_iter_recurse(&dict_entry, &value_variant);
if (dbus_message_iter_get_arg_type(&value_variant) == DBUS_TYPE_STRING) {
const char* title;
dbus_message_iter_get_basic(&value_variant, &title);
std::cout << "Title: " << title << std::endl;
}
} else if (std::string(key) == "xesam:artist") {
DBusMessageIter value_variant;
dbus_message_iter_recurse(&dict_entry, &value_variant);
if (dbus_message_iter_get_arg_type(&value_variant) == DBUS_TYPE_ARRAY) {
DBusMessageIter artist_array;
dbus_message_iter_recurse(&value_variant, &artist_array);
std::cout << "Artist(s): ";
bool first = true;
while (dbus_message_iter_get_arg_type(&artist_array) == DBUS_TYPE_STRING) {
const char* artist;
dbus_message_iter_get_basic(&artist_array, &artist);
if (!first)
std::cout << ", ";
std::cout << artist;
first = false;
dbus_message_iter_next(&artist_array);
}
std::cout << std::endl;
}
} else if (std::string(key) == "mpris:length") {
DBusMessageIter value_variant;
dbus_message_iter_recurse(&dict_entry, &value_variant);
int arg_type = dbus_message_iter_get_arg_type(&value_variant);
if (arg_type == DBUS_TYPE_INT64 || arg_type == DBUS_TYPE_UINT64) {
int64_t length;
dbus_message_iter_get_basic(&value_variant, &length);
std::cout << "Length (Duration): " << length / 1000000.0 << " seconds" << std::endl;
}
}
dbus_message_iter_next(&array_iter);
}
}
} else {
std::cerr << "Unexpected reply type for Metadata" << std::endl;
}
dbus_message_unref(reply);
msg = dbus_message_new_method_call(player.c_str(), "/org/mpris/MediaPlayer2", "org.freedesktop.DBus.Properties",
"Get");
prop = "Position";
dbus_message_append_args(msg, DBUS_TYPE_STRING, &iface, DBUS_TYPE_STRING, &prop, DBUS_TYPE_INVALID);
reply = dbus_connection_send_with_reply_and_block(conn, msg, -1, &err);
dbus_message_unref(msg);
if (!reply) {
std::cerr << "Failed to get position: " << (err.message ? err.message : "Unknown error") << std::endl;
dbus_error_free(&err);
return;
}
dbus_message_iter_init(reply, &args);
if (dbus_message_iter_get_arg_type(&args) == DBUS_TYPE_VARIANT) {
DBusMessageIter variant;
dbus_message_iter_recurse(&args, &variant);
int arg_type = dbus_message_iter_get_arg_type(&variant);
if (arg_type == DBUS_TYPE_INT64 || arg_type == DBUS_TYPE_UINT64) {
int64_t position;
dbus_message_iter_get_basic(&variant, &position);
std::cout << "Current Position: " << position / 1000000.0 << " seconds" << std::endl;
}
}
dbus_message_unref(reply);
}
std::shared_ptr<MediaInfo> backend::getMediaInformation() {
if (!initialized) {
DBusError err;
dbus_error_init(&err);
conn = dbus_bus_get(DBUS_BUS_SESSION, &err);
if (!conn) {
dbus_error_free(&err);
return nullptr;
}
initialized = true;
}
std::string player = getActivePlayer(conn);
if (player == "")
return nullptr;
getNowPlaying(conn, player);
return nullptr;
}
bool backend::toggleAutostart(bool enabled) { return false; }
#endif