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/*************************************************************************** |
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* * |
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* LinuxSampler - modular, streaming capable sampler * |
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* * |
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* Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck * |
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* Copyright (C) 2005 Christian Schoenebeck * |
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* * |
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* This program is free software; you can redistribute it and/or modify * |
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* it under the terms of the GNU General Public License as published by * |
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* the Free Software Foundation; either version 2 of the License, or * |
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* (at your option) any later version. * |
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* * |
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* This program is distributed in the hope that it will be useful, * |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of * |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
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* GNU General Public License for more details. * |
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* * |
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* You should have received a copy of the GNU General Public License * |
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* along with this program; if not, write to the Free Software * |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, * |
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* MA 02111-1307 USA * |
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***************************************************************************/ |
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|
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#include "MidiInputDeviceAlsa.h" |
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#include "MidiInputDeviceFactory.h" |
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|
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#define perm_ok(pinfo,bits) ((snd_seq_port_info_get_capability(pinfo) & (bits)) == (bits)) |
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|
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namespace LinuxSampler { |
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|
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// *************** ParameterName *************** |
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// * |
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|
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MidiInputDeviceAlsa::MidiInputPortAlsa::ParameterName::ParameterName(MidiInputPort* pPort) throw (LinuxSamplerException) : MidiInputPort::ParameterName(pPort, "Port " + ToString(pPort->GetPortNumber())) { |
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OnSetValue(ValueAsString()); // initialize port name |
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} |
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|
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void MidiInputDeviceAlsa::MidiInputPortAlsa::ParameterName::OnSetValue(String s) throw (LinuxSamplerException) { |
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if (s.size() > 16) throw LinuxSamplerException("Name too long for ALSA MIDI input port (max. 16 characters)"); |
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snd_seq_port_info_t* hInfo; |
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snd_seq_port_info_malloc(&hInfo); |
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snd_seq_get_port_info(((MidiInputDeviceAlsa*)pPort->GetDevice())->hAlsaSeq, pPort->GetPortNumber(), hInfo); |
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snd_seq_port_info_set_name(hInfo, s.c_str()); |
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snd_seq_set_port_info(((MidiInputDeviceAlsa*)pPort->GetDevice())->hAlsaSeq, pPort->GetPortNumber(), hInfo); |
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snd_seq_port_info_free(hInfo); |
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} |
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|
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|
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|
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// *************** ParameterAlsaSeqBindings *************** |
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// * |
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|
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|
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MidiInputDeviceAlsa::MidiInputPortAlsa::ParameterAlsaSeqBindings::ParameterAlsaSeqBindings(MidiInputPortAlsa* pPort) : DeviceRuntimeParameterStrings( std::vector<String>() ) { |
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this->pPort = pPort; |
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} |
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|
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String MidiInputDeviceAlsa::MidiInputPortAlsa::ParameterAlsaSeqBindings::Description() { |
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return "Bindings to other Alsa sequencer clients"; |
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} |
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bool MidiInputDeviceAlsa::MidiInputPortAlsa::ParameterAlsaSeqBindings::Fix() { |
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return false; |
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} |
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|
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std::vector<String> MidiInputDeviceAlsa::MidiInputPortAlsa::ParameterAlsaSeqBindings::PossibilitiesAsString() { |
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std::vector<String> res; |
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snd_seq_client_info_t* cinfo; |
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snd_seq_port_info_t* pinfo; |
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|
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snd_seq_client_info_alloca(&cinfo); |
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snd_seq_port_info_alloca(&pinfo); |
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snd_seq_client_info_set_client(cinfo, -1); |
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while (snd_seq_query_next_client(pPort->pDevice->hAlsaSeq, cinfo) >= 0) { |
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snd_seq_port_info_set_client(pinfo, snd_seq_client_info_get_client(cinfo)); |
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snd_seq_port_info_set_port(pinfo, -1); |
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while (snd_seq_query_next_port(pPort->pDevice->hAlsaSeq, pinfo) >= 0) { |
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if (perm_ok(pinfo, SND_SEQ_PORT_CAP_READ|SND_SEQ_PORT_CAP_SUBS_READ)) { |
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String seq_id = ToString(snd_seq_client_info_get_client(cinfo)) + ":" + |
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ToString(snd_seq_port_info_get_port(pinfo)); |
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res.push_back(seq_id); |
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} |
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} |
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} |
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|
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return res; |
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} |
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|
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void MidiInputDeviceAlsa::MidiInputPortAlsa::ParameterAlsaSeqBindings::OnSetValue(std::vector<String> vS) throw (LinuxSamplerException) { |
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std::vector<String>::iterator iter = vS.begin(); |
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for (; iter != vS.end(); iter++) pPort->ConnectToAlsaMidiSource((*iter).c_str()); |
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} |
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|
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|
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|
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// *************** ParameterAlsaSeqId *************** |
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// * |
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|
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MidiInputDeviceAlsa::MidiInputPortAlsa::ParameterAlsaSeqId::ParameterAlsaSeqId(MidiInputPortAlsa* pPort) |
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: DeviceRuntimeParameterString(ToString(pPort->pDevice->hAlsaSeqClient) + ":" + ToString(pPort->portNumber)) { |
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} |
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|
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String MidiInputDeviceAlsa::MidiInputPortAlsa::ParameterAlsaSeqId::Description() { |
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return "ALSA Sequencer ID"; |
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} |
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|
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bool MidiInputDeviceAlsa::MidiInputPortAlsa::ParameterAlsaSeqId::Fix() { |
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return true; |
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} |
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|
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std::vector<String> MidiInputDeviceAlsa::MidiInputPortAlsa::ParameterAlsaSeqId::PossibilitiesAsString() { |
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return std::vector<String>(); // nothing |
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} |
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|
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void MidiInputDeviceAlsa::MidiInputPortAlsa::ParameterAlsaSeqId::OnSetValue(String s) { |
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// not possible as parameter is 'fix' |
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} |
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|
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|
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|
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// *************** MidiInputPortAlsa *************** |
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// * |
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|
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MidiInputDeviceAlsa::MidiInputPortAlsa::MidiInputPortAlsa(MidiInputDeviceAlsa* pDevice) throw (MidiInputException) : MidiInputPort(pDevice, -1) { |
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this->pDevice = pDevice; |
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|
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// create Alsa sequencer port |
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int alsaPort = snd_seq_create_simple_port(pDevice->hAlsaSeq, "unnamed port", |
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SND_SEQ_PORT_CAP_WRITE|SND_SEQ_PORT_CAP_SUBS_WRITE, |
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SND_SEQ_PORT_TYPE_APPLICATION); |
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if (alsaPort < 0) throw MidiInputException("Error creating sequencer port"); |
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this->portNumber = alsaPort; |
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|
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Parameters["NAME"] = new ParameterName(this); |
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Parameters["ALSA_SEQ_BINDINGS"] = new ParameterAlsaSeqBindings(this); |
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Parameters["ALSA_SEQ_ID"] = new ParameterAlsaSeqId(this); |
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} |
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|
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MidiInputDeviceAlsa::MidiInputPortAlsa::~MidiInputPortAlsa() { |
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snd_seq_delete_simple_port(pDevice->hAlsaSeq, portNumber); |
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} |
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|
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/** |
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* Connects this Alsa midi input device with an Alsa MIDI source. |
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* |
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* @param Client - Alsa sequencer client and port ID of a MIDI source |
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* (e.g. "64:0") |
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* @throws MidiInputException if connection cannot be established |
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*/ |
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void MidiInputDeviceAlsa::MidiInputPortAlsa::ConnectToAlsaMidiSource(const char* MidiSource) { |
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snd_seq_addr_t sender, dest; |
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snd_seq_port_subscribe_t* subs; |
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int hExtClient, hExtPort; |
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|
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sscanf(MidiSource, "%d:%d", &hExtClient, &hExtPort); |
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sender.client = (char) hExtClient; |
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sender.port = (char) hExtPort; |
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dest.client = (char) pDevice->hAlsaSeqClient; |
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dest.port = (char) portNumber; |
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snd_seq_port_subscribe_alloca(&subs); |
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snd_seq_port_subscribe_set_sender(subs, &sender); |
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snd_seq_port_subscribe_set_dest(subs, &dest); |
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snd_seq_port_subscribe_set_queue(subs, 1); |
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snd_seq_port_subscribe_set_time_update(subs, 1); |
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snd_seq_port_subscribe_set_time_real(subs, 1); |
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if (snd_seq_subscribe_port(pDevice->hAlsaSeq, subs) < 0) |
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throw MidiInputException(String("Unable to connect to Alsa seq client \'") + MidiSource + "\' (" + snd_strerror(errno) + ")"); |
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} |
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|
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|
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|
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// *************** MidiInputDeviceAlsa *************** |
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// * |
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|
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MidiInputDeviceAlsa::MidiInputDeviceAlsa(std::map<String,DeviceCreationParameter*> Parameters, void* pSampler) : MidiInputDevice(Parameters, pSampler), Thread(true, true, 1, -1) { |
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if (snd_seq_open(&hAlsaSeq, "default", SND_SEQ_OPEN_INPUT, 0) < 0) { |
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throw MidiInputException("Error opening ALSA sequencer"); |
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} |
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this->hAlsaSeqClient = snd_seq_client_id(hAlsaSeq); |
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snd_seq_set_client_name(hAlsaSeq, "LinuxSampler"); |
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AcquirePorts(((DeviceCreationParameterInt*)Parameters["PORTS"])->ValueAsInt()); |
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if (((DeviceCreationParameterBool*)Parameters["ACTIVE"])->ValueAsBool()) { |
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Listen(); |
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} |
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} |
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|
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MidiInputDeviceAlsa::~MidiInputDeviceAlsa() { |
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snd_seq_close(hAlsaSeq); |
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} |
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MidiInputDeviceAlsa::MidiInputPortAlsa* MidiInputDeviceAlsa::CreateMidiPort() { |
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return new MidiInputPortAlsa(this); |
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} |
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|
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String MidiInputDeviceAlsa::Name() { |
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return "ALSA"; |
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} |
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String MidiInputDeviceAlsa::Driver() { |
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return Name(); |
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} |
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|
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void MidiInputDeviceAlsa::Listen() { |
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StartThread(); |
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} |
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void MidiInputDeviceAlsa::StopListen() { |
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StopThread(); |
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} |
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String MidiInputDeviceAlsa::Description() { |
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return "Advanced Linux Sound Architecture"; |
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} |
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|
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String MidiInputDeviceAlsa::Version() { |
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String s = "$Revision: 1.15 $"; |
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return s.substr(11, s.size() - 13); // cut dollar signs, spaces and CVS macro keyword |
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} |
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int MidiInputDeviceAlsa::Main() { |
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int npfd; |
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struct pollfd* pfd; |
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snd_seq_event_t* ev; |
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npfd = snd_seq_poll_descriptors_count(hAlsaSeq, POLLIN); |
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pfd = (struct pollfd*) alloca(npfd * sizeof(struct pollfd)); |
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snd_seq_poll_descriptors(hAlsaSeq, pfd, npfd, POLLIN); |
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while (true) { |
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if (poll(pfd, npfd, 100000) > 0) { |
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do { |
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snd_seq_event_input(hAlsaSeq, &ev); |
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int port = (int) ev->dest.port; |
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MidiInputPort* pMidiInputPort = Ports[port]; |
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|
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switch (ev->type) { |
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case SND_SEQ_EVENT_CONTROLLER: |
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pMidiInputPort->DispatchControlChange(ev->data.control.param, ev->data.control.value, ev->data.control.channel); |
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break; |
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|
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case SND_SEQ_EVENT_PITCHBEND: |
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pMidiInputPort->DispatchPitchbend(ev->data.control.value, ev->data.control.channel); |
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break; |
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|
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case SND_SEQ_EVENT_NOTEON: |
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if (ev->data.note.velocity != 0) { |
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pMidiInputPort->DispatchNoteOn(ev->data.note.note, ev->data.note.velocity, ev->data.control.channel); |
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} |
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else { |
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pMidiInputPort->DispatchNoteOff(ev->data.note.note, 0, ev->data.control.channel); |
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} |
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break; |
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|
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case SND_SEQ_EVENT_NOTEOFF: |
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pMidiInputPort->DispatchNoteOff(ev->data.note.note, ev->data.note.velocity, ev->data.control.channel); |
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break; |
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|
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case SND_SEQ_EVENT_SYSEX: |
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pMidiInputPort->DispatchSysex(ev->data.ext.ptr, ev->data.ext.len); |
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break; |
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|
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case SND_SEQ_EVENT_PGMCHANGE: |
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pMidiInputPort->DispatchProgramChange(ev->data.control.value, ev->data.control.channel); |
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break; |
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} |
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snd_seq_free_event(ev); |
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} while (snd_seq_event_input_pending(hAlsaSeq, 0) > 0); |
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} |
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} |
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} |
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|
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} // namespace LinuxSampler |
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