CEC: Add implementation of SendMessage method to default HdmiCec (971853be) · Commits · e / os / android_hardware_interfaces

tv/cec/1.0/default/HdmiCecDefault.cpp

+34 −2

Original line number	Diff line number	Diff line
		@@ -57,10 +57,42 @@ Return<void> HdmiCecDefault::getPhysicalAddress(getPhysicalAddress_cb /*_hidl_cb
		return Void();
		}

		Return<SendMessageResult> HdmiCecDefault::sendMessage(const CecMessage& /message/) {
		Return<SendMessageResult> HdmiCecDefault::sendMessage(const CecMessage& message) {
		struct cec_msg cecMsg;
		memset(&cecMsg, 0, sizeof(cec_msg));

		int initiator = static_cast<cec_logical_address_t>(message.initiator);
		int destination = static_cast<cec_logical_address_t>(message.destination);

		cecMsg.msg[0] = (initiator << 4) \| destination;
		for (size_t i = 0; i < message.body.size(); ++i) {
		cecMsg.msg[i + 1] = message.body[i];
		}
		cecMsg.len = message.body.size() + 1;

		int ret = ioctl(mCecFd, CEC_TRANSMIT, &cecMsg);

		if (ret) {
		LOG(ERROR) << "Send message failed, Error = " << strerror(errno);
		return SendMessageResult::FAIL;
		}

		if (cecMsg.tx_status != CEC_TX_STATUS_OK) {
		LOG(ERROR) << "Send message tx_status = " << cecMsg.tx_status;
		}

		switch (cecMsg.tx_status) {
		case CEC_TX_STATUS_OK:
		return SendMessageResult::SUCCESS;
		case CEC_TX_STATUS_ARB_LOST:
		return SendMessageResult::BUSY;
		case CEC_TX_STATUS_NACK:
		return SendMessageResult::NACK;
		default:
		return SendMessageResult::FAIL;
		}
		}

		Return<void> HdmiCecDefault::setCallback(const sp<IHdmiCecCallback>& /callback/) {
		return Void();
		}