Add L2CapWiimote

src/input/api/Wiimote/l2cap/L2CapWiimote.cpp

@@ -0,0 +1,127 @@
+#include "L2CapWiimote.h"
+#include <bluetooth/l2cap.h>
+
+namespace {
+	// TODO: Add procedure to get addresses. Should add to PairingDialog
+	std::vector<bdaddr_t> s_address;
+	std::mutex s_addressMutex;
+
+	bool AttemptConnect(int sockFd, sockaddr_l2 const& addr)
+	{
+		for (auto i = 0; i < 3; ++i)
+		{
+			if (connect(sockFd, reinterpret_cast<sockaddr const*>(&addr),
+						sizeof(sockaddr_l2)) == 0)
+				return true;
+			cemuLog_logDebug(LogType::Force, "Connection attempt {} failed with error {:x}: {} ", i + 1, errno,
+							 std::strerror(errno));
+			if (i == 2)
+				break;
+			std::this_thread::sleep_for(std::chrono::milliseconds(300));
+		}
+		return false;
+	}
+	bool AttemptSetNonBlock(int& sockFd)
+	{
+		return fcntl(sockFd, F_SETFL, fcntl(sockFd, F_GETFL) | O_NONBLOCK) == 0;
+	}
+}
+
+L2CapWiimote::L2CapWiimote(int recvFd,int sendFd)
+: m_recvFd(recvFd), m_sendFd(sendFd)
+{
+
+}
+
+L2CapWiimote::~L2CapWiimote()
+{
+	::close(m_recvFd);
+	::close(m_sendFd);
+}
+
+std::vector<WiimoteDevicePtr> L2CapWiimote::get_devices()
+{
+	s_addressMutex.lock();
+	const auto addresses = s_address;
+	s_addressMutex.unlock();
+
+
+	std::vector<WiimoteDevicePtr> outDevices;
+	for (auto addr : addresses)
+	{
+		// Socket for sending data to controller, PSM 0x11
+		auto sendFd = socket(PF_BLUETOOTH, SOCK_SEQPACKET, BTPROTO_L2CAP);
+		if (sendFd < 0) {
+			cemuLog_logDebug(LogType::Force, "Failed to open send socket: {}", strerror(errno));
+			continue;
+		}
+
+		sockaddr_l2 sendAddr{};
+		sendAddr.l2_family = AF_BLUETOOTH;
+		sendAddr.l2_psm = htobs(0x11);
+		sendAddr.l2_bdaddr = addr;
+
+		if (!AttemptConnect(sendFd, sendAddr) || !AttemptSetNonBlock(sendFd)) {
+			cemuLog_logDebug(LogType::Force,"Failed to connect send socket to '{:02x}': {}",
+							 fmt::join(addr.b, ":"), strerror(errno));
+			close(sendFd);
+			continue;
+		}
+
+		// Socket for receiving data from controller, PSM 0x13
+		auto recvFd = socket(PF_BLUETOOTH, SOCK_SEQPACKET, BTPROTO_L2CAP);
+		if (recvFd < 0) {
+			cemuLog_logDebug(LogType::Force,"Failed to open recv socket: {}", strerror(errno));
+			close(sendFd);
+			continue;
+		}
+		sockaddr_l2 recvAddr{};
+		recvAddr.l2_family = AF_BLUETOOTH;
+		recvAddr.l2_psm = htobs(0x13);
+		recvAddr.l2_bdaddr = addr;
+
+		if (!AttemptConnect(recvFd, recvAddr) || !AttemptSetNonBlock(recvFd)) {
+			cemuLog_logDebug(LogType::Force,"Failed to connect recv socket to '{:02x}': {}",
+							 fmt::join(addr.b, ":"), strerror(errno));
+			close(sendFd);
+			close(recvFd);
+			continue;
+		}
+
+		outDevices.push_back(std::make_unique<L2CapWiimote>(sendFd, recvFd));
+	}
+	return outDevices;
+}
+
+bool L2CapWiimote::write_data(const std::vector<uint8>& data)
+{
+	const auto size = data.size();
+	cemu_assert_debug(size < 23);
+	uint8 buffer[23];
+	// All outgoing messages must be prefixed with 0xA2
+	buffer[0] = 0xA2;
+	std::memcpy(buffer + 1, data.data(), size);
+	const auto outSize = size + 1;
+	return send(m_sendFd, buffer, outSize, 0) != outSize;
+}
+
+std::optional<std::vector<uint8>> L2CapWiimote::read_data()
+{
+	uint8 buffer[23];
+	const auto nBytes = recv(m_sendFd, buffer, 23, 0);
+
+	// All incoming messages must be prefixed with 0xA1
+	if (nBytes < 2 || buffer[0] != 0xA1)
+		return {};
+	return std::vector(buffer + 1, buffer + 1 + nBytes - 1);
+}
+
+
+bool L2CapWiimote::operator==(WiimoteDevice& rhs) const
+{
+	auto mote = dynamic_cast<const L2CapWiimote*>(&rhs);
+	if (!mote)
+		return false;
+	return m_recvFd == mote->m_recvFd || m_recvFd == mote->m_sendFd;
+}
+