static AlsaPort iterateMidiDevices (const bool forInput, StringArray& deviceNamesFound, const int deviceIndexToOpen) { AlsaPort port; const AlsaClient::Ptr client (globalAlsaSequencer (forInput)); if (snd_seq_t* const seqHandle = client->get()) { snd_seq_system_info_t* systemInfo = nullptr; snd_seq_client_info_t* clientInfo = nullptr; if (snd_seq_system_info_malloc (&systemInfo) == 0) { if (snd_seq_system_info (seqHandle, systemInfo) == 0 && snd_seq_client_info_malloc (&clientInfo) == 0) { int numClients = snd_seq_system_info_get_cur_clients (systemInfo); while (--numClients >= 0 && ! port.isValid()) if (snd_seq_query_next_client (seqHandle, clientInfo) == 0) port = iterateMidiClient (client, clientInfo, forInput, deviceNamesFound, deviceIndexToOpen); snd_seq_client_info_free (clientInfo); } snd_seq_system_info_free (systemInfo); } } deviceNamesFound.appendNumbersToDuplicates (true, true); return port; }
//============================================================================== static snd_seq_t* iterateDevices (const bool forInput, StringArray& deviceNamesFound, const int deviceIndexToOpen) { snd_seq_t* returnedHandle = 0; snd_seq_t* seqHandle; if (snd_seq_open (&seqHandle, "default", forInput ? SND_SEQ_OPEN_INPUT : SND_SEQ_OPEN_OUTPUT, 0) == 0) { snd_seq_system_info_t* systemInfo; snd_seq_client_info_t* clientInfo; if (snd_seq_system_info_malloc (&systemInfo) == 0) { if (snd_seq_system_info (seqHandle, systemInfo) == 0 && snd_seq_client_info_malloc (&clientInfo) == 0) { int numClients = snd_seq_system_info_get_cur_clients (systemInfo); while (--numClients >= 0 && returnedHandle == 0) { if (snd_seq_query_next_client (seqHandle, clientInfo) == 0) { snd_seq_port_info_t* portInfo; if (snd_seq_port_info_malloc (&portInfo) == 0) { int numPorts = snd_seq_client_info_get_num_ports (clientInfo); const int client = snd_seq_client_info_get_client (clientInfo); snd_seq_port_info_set_client (portInfo, client); snd_seq_port_info_set_port (portInfo, -1); while (--numPorts >= 0) { if (snd_seq_query_next_port (seqHandle, portInfo) == 0 && (snd_seq_port_info_get_capability (portInfo) & (forInput ? SND_SEQ_PORT_CAP_READ : SND_SEQ_PORT_CAP_WRITE)) != 0) { deviceNamesFound.add (snd_seq_client_info_get_name (clientInfo)); if (deviceNamesFound.size() == deviceIndexToOpen + 1) { const int sourcePort = snd_seq_port_info_get_port (portInfo); const int sourceClient = snd_seq_client_info_get_client (clientInfo); if (sourcePort != -1) { snd_seq_set_client_name (seqHandle, forInput ? "Juce Midi Input" : "Juce Midi Output"); const int portId = snd_seq_create_simple_port (seqHandle, forInput ? "Juce Midi In Port" : "Juce Midi Out Port", forInput ? (SND_SEQ_PORT_CAP_WRITE | SND_SEQ_PORT_CAP_SUBS_WRITE) : (SND_SEQ_PORT_CAP_READ | SND_SEQ_PORT_CAP_SUBS_READ), SND_SEQ_PORT_TYPE_MIDI_GENERIC); snd_seq_connect_from (seqHandle, portId, sourceClient, sourcePort); returnedHandle = seqHandle; } } } } snd_seq_port_info_free (portInfo); } } } snd_seq_client_info_free (clientInfo); } snd_seq_system_info_free (systemInfo); } if (returnedHandle == 0) snd_seq_close (seqHandle); } deviceNamesFound.appendNumbersToDuplicates (true, true); return returnedHandle; }