Add the ability to remove ports

include/jackaudioio.hpp

@@ -204,6 +204,23 @@ In that method you can get audio in from jack and write it out to jack.
 			virtual unsigned int addOutPort(std::string name)
 				throw(std::runtime_error);
 
+			/**
+			   @brief Remove a jack input port from our client.
+			   This method cannot be called while the client is running.
+			  \param name string the name of the port to remove
+			  \return the number of total input ports
+			*/
+			virtual unsigned int removeInPort(std::string name)
+				throw(std::runtime_error);
+			/**
+			   @brief Remove a jack output port from our client.
+			   This method cannot be called while the client is running.
+			  \param name string the name of the port to remove
+			  \return the number of total output ports
+			*/
+			virtual unsigned int removeOutPort(std::string name)
+				throw(std::runtime_error);
+
 			/**
 			   @brief Connect our output to a jack client's source port.
 			  \param index the index of our output port to connect from.

src/jackaudioio.cpp

@@ -277,6 +277,66 @@ unsigned int JackCpp::AudioIO::addOutPort(std::string name)
 	return mOutputPorts.size() - 1;
 }
 
+unsigned int JackCpp::AudioIO::removeInPort(std::string name)
+	throw(std::runtime_error)
+{
+	// if the client is active this presents all sorts of issues
+	if (mJackState == active)
+		throw std::runtime_error("removing ports while the client is active is not supported");
+
+	std::vector<std::string>::iterator name_iter;
+	name_iter = std::find(mPortNames.begin(), mPortNames.end(), name);
+	if (name_iter == mPortNames.end())
+		throw std::runtime_error("cannot remove non-existent port: " + name);
+
+	std::vector<jack_port_t *>::iterator port_iter = mInputPorts.begin();
+	for (; port_iter != mInputPorts.end(); ++port_iter) {
+		if (std::string(jack_port_short_name(*port_iter)) == name)
+			break;
+	}
+	if (port_iter == mInputPorts.end())
+		throw std::runtime_error("could not find port in port list!");
+
+	if (jack_port_unregister(mJackClient, *port_iter))
+		throw std::runtime_error("could not unregister port!");
+
+	mInputPorts.erase(port_iter);
+	mPortNames.erase(name_iter);
+	mJackInBuf.pop_back();
+
+	return mInputPorts.size();
+}
+
+unsigned int JackCpp::AudioIO::removeOutPort(std::string name)
+	throw(std::runtime_error)
+{
+	// if the client is active this presents all sorts of issues
+	if (mJackState == active)
+		throw std::runtime_error("removing ports while the client is active is not supported");
+
+	std::vector<std::string>::iterator name_iter;
+	name_iter = std::find(mPortNames.begin(), mPortNames.end(), name);
+	if (name_iter == mPortNames.end())
+		throw std::runtime_error("cannot remove non-existent port: " + name);
+
+	std::vector<jack_port_t *>::iterator port_iter = mOutputPorts.begin();
+	for (; port_iter != mOutputPorts.end(); ++port_iter) {
+		if (std::string(jack_port_short_name(*port_iter)) == name)
+			break;
+	}
+	if (port_iter == mOutputPorts.end())
+		throw std::runtime_error("could not find port in port list!");
+
+	if (jack_port_unregister(mJackClient, *port_iter))
+		throw std::runtime_error("could not unregister port!");
+
+	mOutputPorts.erase(port_iter);
+	mPortNames.erase(name_iter);
+	mJackOutBuf.pop_back();
+
+	return mOutputPorts.size();
+}
+
 void JackCpp::AudioIO::connectTo(unsigned int index, std::string destPortName)
 	throw(std::range_error, std::runtime_error)
 {