744 lines
19 KiB
C#
744 lines
19 KiB
C#
/*
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Copyright (C) Arnaud Houdelette 2012-2014
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Copyright (C) Emmanuel Langlois 2012-2014
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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.
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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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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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using System;
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using System.Runtime.InteropServices;
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using System.Collections.Generic;
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using System.Linq;
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namespace DMX2
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{
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public class MidiEventProvider : IEventProvider, IDisposable
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{
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class internalEvent
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{
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readonly string internalName;
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bool bound = false;
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readonly uint page;
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readonly int midiEvCode;
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public bool Bound {
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get {
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return bound;
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}
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set {
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bound = value;
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}
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}
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public string InternalName {
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get {
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return internalName;
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}
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}
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public uint Page {
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get {
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return page;
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}
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}
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public int MidiEvCode {
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get {
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return midiEvCode;
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}
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}
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public internalEvent (string _id, uint _page, int _evHCode)
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{
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internalName = _id;
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page = _page;
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midiEvCode = _evHCode;
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}
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int lastknownvalue = -1;
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public int LastKnownValue {
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get {
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return lastknownvalue;
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}
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set {
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lastknownvalue = value;
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}
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}
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AlsaSeqLib.snd_seq_event_t storedevent;
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public AlsaSeqLib.snd_seq_event_t StoredEvent {
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get {
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return storedevent;
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}
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set {
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storedevent = value;
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}
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}
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}
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abstract class feedbackinfo : IFeedbackInfo
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{
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MidiEventProvider prov;
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readonly internalEvent iev;
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protected AlsaSeqLib.snd_seq_event_t ev;
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public feedbackinfo (MidiEventProvider _prov, internalEvent _iev)
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{
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prov = _prov;
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iev = _iev;
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}
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protected abstract bool UpdateEvent (byte data);
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#region IFeedbackInfo implementation
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bool IFeedbackInfo.FeedBack (byte data)
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{
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bool update = UpdateEvent (data);
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iev.StoredEvent = ev;
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iev.LastKnownValue = data;
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if (!update)
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return true;
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if (prov.CurrentPage == iev.Page || iev.Page == 0) {
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prov.SendEvent (ev);
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foreach (int srcid in prov.feedbacksources) {
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prov.lastValueOfSrc [CombineHash (srcid, iev.MidiEvCode)] = data;
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}
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}
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return true;
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}
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#endregion
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}
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class ctrlfeedbackinfo : feedbackinfo
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{
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public ctrlfeedbackinfo (MidiEventProvider _prov, internalEvent _iev, byte channel, uint param)
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:base(_prov,_iev)
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{
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ev = new AlsaSeqLib.snd_seq_event_t ();
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ev.data_ev_ctrl.channel = channel;
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ev.data_ev_ctrl.param = param;
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ev.type = AlsaSeqLib.snd_seq_event_type_t.SND_SEQ_EVENT_CONTROLLER;
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}
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protected override bool UpdateEvent (byte data)
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{
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int newvalue = (int)data * 127 / 255;
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if (newvalue == ev.data_ev_ctrl.value)
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return false;
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ev.data_ev_ctrl.value = newvalue;
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return true;
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}
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}
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class pitchbendfeedbackinfo : feedbackinfo
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{
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public pitchbendfeedbackinfo (MidiEventProvider _prov, internalEvent _iev, byte channel)
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:base(_prov,_iev)
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{
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ev = new AlsaSeqLib.snd_seq_event_t ();
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ev.data_ev_ctrl.channel = channel;
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ev.type = AlsaSeqLib.snd_seq_event_type_t.SND_SEQ_EVENT_PITCHBEND;
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}
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protected override bool UpdateEvent (byte data)
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{
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int newvalue = (int)data * 14000 / 255 - 7000;
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if (newvalue == ev.data_ev_ctrl.value)
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return false;
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ev.data_ev_ctrl.value = newvalue;
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return true;
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}
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}
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public class MidiDev
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{
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string name;
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public string Name { get { return name; } }
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public bool HasFeedback { get; set; }
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readonly List<int> connected = new List<int> ();
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public List<int> ConnectedPorts {
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get{ return connected;}
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}
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public MidiDev (string _name)
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{
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name = _name;
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}
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}
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/// <summary>
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/// Etat interne des evenements midi paginés.
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/// </summary>
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readonly Dictionary<string,internalEvent> eventlist = new Dictionary<string, internalEvent> ();
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/// <summary>
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/// Liste des peripheriques connus (presents ou non)
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/// </summary>
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readonly Dictionary<string,MidiDev> knowndevices = new Dictionary<string,MidiDev> ();
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/// <summary>
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/// Liste des ports connectés avec feedback
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/// </summary>
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readonly List<int> feedbacksources = new List<int> ();
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//static readonly Dictionary<int,MidiDev> srcidToDev = new Dictionary<int, MidiDev>();
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readonly List<byte> unpaginatedchannels = new List<byte> ();
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/// <summary>
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/// Derniere valeur connue pour une evenement sur source donnée :
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/// Soit recue, soit envoyée (feedback / changement de page)
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/// </summary>
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readonly Dictionary<int,byte> lastValueOfSrc = new Dictionary<int, byte> ();
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EventData last;
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internalEvent levent = null;
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bool connected = false;
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bool guirefreshflag = false;
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uint page = 1;
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uint maxpage = 8;
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public uint CurrentPage {
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get {
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return page;
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}
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set {
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if (value < 1 || value > maxpage)
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return;
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page = value;
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Refresh ();
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}
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}
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public uint Maxpage {
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get {
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return maxpage;
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}
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set {
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maxpage = value;
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}
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}
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public List<byte> UnpaginatedChannels {
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get {
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return unpaginatedchannels;
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}
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}
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public bool GuiRefreshFlag {
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get {
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if (guirefreshflag) {
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guirefreshflag = false;
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return true;
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}
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return false;
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}
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}
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public void ConnectDevice (string name)
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{
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knowndevices.Add (name, new MidiDev (name));
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AutoConnect ();
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}
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public void RefreshFeedback (string name)
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{
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foreach (int port in knowndevices[name].ConnectedPorts) {
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if (knowndevices [name].HasFeedback) {
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if (!feedbacksources.Contains (port))
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feedbacksources.Add (port);
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} else {
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if (feedbacksources.Contains (port))
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feedbacksources.Remove (port);
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}
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}
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}
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public void DisconnectDevice (MidiEventProvider.MidiDev dev)
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{
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if (!knowndevices.ContainsKey (dev.Name))
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return;
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knowndevices.Remove (dev.Name);
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foreach (int connectedport in dev.ConnectedPorts) {
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int client = connectedport >> 8;
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int port = connectedport & 0xFF;
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AlsaSeqLib.Deconnecte (client, port);
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}
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}
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public bool IsKnownDevice (string name)
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{
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return knowndevices.ContainsKey (name);
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}
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public IEnumerable<MidiDev> KnownDevices {
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get {
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return knowndevices.Values;
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}
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}
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public MidiEventProvider (EventManager manager)
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{
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/*MidiDev dev = new MidiDev("VMPK Input:VMPK Input");
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dev.HasFeedback = true;
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knowndevices.Add(dev.Name,dev);
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dev = new MidiDev("VMPK Output:VMPK Output");
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dev.HasFeedback = true;
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knowndevices.Add(dev.Name,dev);*/
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manager.RegisterProvider (this);
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AlsaSeqLib.Init ();
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AlsaSeqLib.ConnectFrom (AlsaSeqLib.SND_SEQ_CLIENT_SYSTEM, AlsaSeqLib.SND_SEQ_PORT_SYSTEM_ANNOUNCE);
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AutoConnect ();
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}
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void AutoConnect ()
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{
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foreach (var cli in AlsaSeqLib.EnumClients()) {
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foreach (var p in cli.Ports) {
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PortDetected (cli, p);
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}
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}
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}
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void PortDetected (AlsaSeqLib.Client cli, AlsaSeqLib.Port p)
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{
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// Execute a chaque 'apparition' d'un port midi
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// teste si connection auto au port et connecte si besoin
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guirefreshflag = true;
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string fullportname = cli.Name + ':' + p.Name;
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if (knowndevices.ContainsKey (fullportname)) {
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int srcid = p.ClientId << 8 + p.PortId;
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if (knowndevices [fullportname].ConnectedPorts.Contains (srcid))
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return;
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AlsaSeqLib.Connect (p);
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}
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}
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void PortConnect (AlsaSeqLib.snd_seq_connect_t cn, bool connect)
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{
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int clientId, portId;
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if (cn.dest.client == AlsaSeqLib.ClientId) {
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clientId = cn.sender.client;
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portId = cn.sender.port;
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} else {
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clientId = cn.dest.client;
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portId = cn.dest.port;
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}
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int srcid = clientId << 8 + portId;
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if (connect) {
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string fpname = AlsaSeqLib.GetClientByID (clientId).Name + ":" + AlsaSeqLib.GetPortByIDs (clientId, portId).Name;
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if (!knowndevices.ContainsKey (fpname))
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return;
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if (knowndevices [fpname].ConnectedPorts.Contains (srcid))
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return;
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knowndevices [fpname].ConnectedPorts.Add (srcid);
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if (knowndevices [fpname].HasFeedback)
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feedbacksources.Add (srcid);
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guirefreshflag = true;
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//srcidToDev[srcid] = knowndevices [fpname];
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return;
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}
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foreach (var dev in knowndevices.Values) {
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if (dev.ConnectedPorts.Contains (srcid)) {
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/*if(srcidToDev.ContainsKey(srcid))
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srcidToDev.Remove(srcid);*/
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dev.ConnectedPorts.Remove (srcid);
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guirefreshflag = true;
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return;
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}
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}
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}
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static int CombineHash (int hash1, int hash2)
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{
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unchecked {
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return hash1 * 33 + hash2;
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}
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}
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protected bool HasFeedback (int source)
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{
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return feedbacksources.Contains (source);
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}
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public void SendEvent (AlsaSeqLib.snd_seq_event_t ev)
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{
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AlsaSeqLib.SendEventToSubscribers (ev);
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}
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public void Refresh ()
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{
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foreach (var ievent in eventlist.Values) {
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if (ievent.Page == page) {
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SendEvent (ievent.StoredEvent);
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foreach (int src in feedbacksources) {
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int lnvk = CombineHash (src, ievent.MidiEvCode);
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if (ievent.LastKnownValue != -1)
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lastValueOfSrc [lnvk] = (byte)ievent.LastKnownValue;
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}
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}
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}
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}
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#region IEventProvider implementation
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static System.Text.RegularExpressions.Regex regexEventID = new System.Text.RegularExpressions.Regex (
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@"MIDI-PAGE(?<page>\d+)-(?<id>.+)",
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System.Text.RegularExpressions.RegexOptions.Compiled);
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bool IEventProvider.Bind (string eventId)
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{
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// On indique a l'EventManager qu'on traite, si l'ID commence par 'MIDI-'
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if (! eventId.StartsWith ("MIDI-"))
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return false;
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if (! eventlist.ContainsKey (eventId)) {
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var res = regexEventID.Match (eventId);
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if (!res.Success)
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return false;
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uint _page = uint.Parse (res.Groups ["page"].Value);
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int _evHC = res.Groups ["id"].Value.GetHashCode ();
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eventlist.Add (eventId, new internalEvent (eventId, _page, _evHC));
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}
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eventlist [eventId].Bound = true;
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return true;
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}
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void IEventProvider.Unbind (string eventId)
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{
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if (! eventlist.ContainsKey (eventId))
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return;
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eventlist [eventId].Bound = false;
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return;
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}
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Gtk.Menu IEventProvider.GetProviderSubMenu (EventManager.EventMenuData state, Gtk.ButtonPressEventHandler handler)
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{
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if (!connected)
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return null; // Si pas encore recu d'evenements => pas de menu
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Gtk.Menu retmenu = new Gtk.Menu ();
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if (levent != null) { // Creation du sous menu "Dernier"
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/*Gtk.MenuItem lmenuitem = new Gtk.MenuItem ("Dernier");
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retmenu.Add (lmenuitem);
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Gtk.Menu lmenu = new Gtk.Menu ();
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lmenuitem.Submenu = lmenu;*/
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Gtk.MenuItem item = new Gtk.MenuItem (GetDescription (levent.InternalName));
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item.Data [EventManager.EventIdKey] = levent.InternalName;
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item.Data [EventManager.StateKey] = state;
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item.ButtonPressEvent += handler;
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retmenu.Add (item);
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}
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Gtk.MenuItem evmenuitem = new Gtk.MenuItem ("Events"); // Creation du sous menu "Events"
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retmenu.Add (evmenuitem);
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Gtk.Menu evmenu = new Gtk.Menu ();
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evmenuitem.Submenu = evmenu;
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List<string> sortedKeys = eventlist.Keys.ToList (); // On recupere des IDs
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sortedKeys.Sort (); // et on les trie
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foreach (string key in sortedKeys) {
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internalEvent evt = eventlist [key];
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Gtk.MenuItem item = new Gtk.MenuItem (GetDescription (evt.InternalName));
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item.Data [EventManager.EventIdKey] = evt.InternalName;
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item.Data [EventManager.StateKey] = state;
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item.ButtonPressEvent += handler;
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evmenu.Add (item);
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}
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return retmenu;
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}
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void IEventProvider.ProcessEvents (EventManagerCallback callback)
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{
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AlsaSeqLib.snd_seq_event_t evS;
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uint evpage;
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// Tant qu'il y des evenements midi en attente
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while (AlsaSeqLib.GetEvent(out evS)) {
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string id = null;
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int value = 0;
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byte channel = 255;
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switch (evS.type) {
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case AlsaSeqLib.snd_seq_event_type_t.SND_SEQ_EVENT_PORT_SUBSCRIBED: // Connection d'un périph midi
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case AlsaSeqLib.snd_seq_event_type_t.SND_SEQ_EVENT_PORT_UNSUBSCRIBED:
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PortConnect (
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evS.data_connect,
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evS.type == AlsaSeqLib.snd_seq_event_type_t.SND_SEQ_EVENT_PORT_SUBSCRIBED
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);
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continue;
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case AlsaSeqLib.snd_seq_event_type_t.SND_SEQ_EVENT_CONTROLLER:
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if (evS.data_ev_ctrl.param == 127 && evS.data_ev_ctrl.value > 0) {
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CurrentPage++;
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continue;
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}
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if (evS.data_ev_ctrl.param == 126 && evS.data_ev_ctrl.value > 0) {
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CurrentPage--;
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continue;
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}
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id = string.Format ("CTRL-C{0}P{1}", evS.data_ev_ctrl.channel, evS.data_ev_ctrl.param);
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channel = evS.data_ev_ctrl.channel;
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value = 255 * evS.data_ev_ctrl.value / 127; // Conversion {0,127} => {0,255}
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break;
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case AlsaSeqLib.snd_seq_event_type_t.SND_SEQ_EVENT_NOTEON:
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id = string.Format ("NOTE-C{0}N{1}", evS.data_ev_note.channel, evS.data_ev_note.note);
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channel = evS.data_ev_note.channel;
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value = 255;
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break;
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case AlsaSeqLib.snd_seq_event_type_t.SND_SEQ_EVENT_NOTEOFF:
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id = string.Format ("NOTE-C{0}N{1}", evS.data_ev_note.channel, evS.data_ev_note.note);
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channel = evS.data_ev_note.channel;
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value = 0;
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break;
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case AlsaSeqLib.snd_seq_event_type_t.SND_SEQ_EVENT_PITCHBEND:
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id = string.Format ("PB-C{0}", evS.data_ev_ctrl.channel);
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channel = evS.data_ev_ctrl.channel;
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value = ((evS.data_ev_ctrl.value + 7000) * 255 / 14000);
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if (value < 0)
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value = 0;
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if (value > 255)
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value = 255;
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break;
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case AlsaSeqLib.snd_seq_event_type_t.SND_SEQ_EVENT_CLOCK:
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case AlsaSeqLib.snd_seq_event_type_t.SND_SEQ_EVENT_SENSING:
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continue;
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case AlsaSeqLib.snd_seq_event_type_t.SND_SEQ_EVENT_PGMCHANGE:
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CurrentPage = (uint)evS.data_ev_ctrl.value;
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continue;
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case AlsaSeqLib.snd_seq_event_type_t.SND_SEQ_EVENT_PORT_START:
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PortDetected (
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AlsaSeqLib.GetClientByID (evS.data_addr.client),
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AlsaSeqLib.GetPortByIDs (evS.data_addr.client, evS.data_addr.port)
|
|
);
|
|
continue;
|
|
|
|
default:
|
|
id = null;
|
|
#if DEBUG
|
|
Console.WriteLine(string.Format ("event {0}", evS.type) );
|
|
Info.Publish(string.Format ("event {0}", evS.type) ); // On affiche les evenements inconnus
|
|
#endif
|
|
continue;
|
|
}
|
|
|
|
connected = true;
|
|
|
|
|
|
|
|
if (id != null) {
|
|
// Hashcode de l'ev Midi, non pagine
|
|
int evHC = id.GetHashCode ();
|
|
int srcid = evS.source.client << 8 + evS.source.port;
|
|
int lnvk = CombineHash (srcid, evHC);
|
|
|
|
if (channel == 255 || unpaginatedchannels.Contains (channel))
|
|
evpage = 0;
|
|
else
|
|
evpage = page;
|
|
|
|
// Construction de l'ID evenement
|
|
id = string.Format ("MIDI-PAGE{0}-{1}", evpage, id);
|
|
|
|
// Creation de l'objet interne si innexistant
|
|
if (!eventlist.ContainsKey (id))
|
|
eventlist.Add (id, new internalEvent (id, page, evHC));
|
|
levent = eventlist [id]; //Dernier Evenement recu conserve pour menu
|
|
|
|
if (!lastValueOfSrc.ContainsKey (lnvk))
|
|
lastValueOfSrc [lnvk] = (byte)value;
|
|
|
|
|
|
EventData evData = new EventData ();
|
|
evData.id = id;
|
|
evData.value = (byte)value;
|
|
evData.prev_value = lastValueOfSrc [lnvk];
|
|
/*if (evData.Equals (last))
|
|
continue; */
|
|
last = evData;
|
|
|
|
if (eventlist [id].Bound) {
|
|
callback (evData);
|
|
}
|
|
|
|
lastValueOfSrc [lnvk] = (byte)value;
|
|
|
|
eventlist [id].StoredEvent = evS;
|
|
eventlist [id].LastKnownValue = (byte)value;
|
|
|
|
}
|
|
}
|
|
}
|
|
|
|
string IEventProvider.MenuName {
|
|
get {
|
|
return "Midi";
|
|
}
|
|
}
|
|
|
|
static System.Text.RegularExpressions.Regex regexCtrlEventID = new System.Text.RegularExpressions.Regex (
|
|
@"MIDI-PAGE(?<page>\d+)-CTRL-C(?<chan>\d+)P(?<param>\d+)",
|
|
System.Text.RegularExpressions.RegexOptions.Compiled);
|
|
static System.Text.RegularExpressions.Regex regexPbEventID = new System.Text.RegularExpressions.Regex (
|
|
@"MIDI-PAGE(?<page>\d+)-PB-C(?<chan>\d+)",
|
|
System.Text.RegularExpressions.RegexOptions.Compiled);
|
|
static System.Text.RegularExpressions.Regex regexNoteEventID = new System.Text.RegularExpressions.Regex (
|
|
@"MIDI-PAGE(?<page>\d+)-NOTE-C(?<chan>\d+)N(?<note>\d+)",
|
|
System.Text.RegularExpressions.RegexOptions.Compiled);
|
|
|
|
string GetDescription (string eventId)
|
|
{
|
|
if (!eventlist.ContainsKey (eventId))
|
|
return null;
|
|
|
|
var res = regexCtrlEventID.Match (eventId);
|
|
if (res.Success) {
|
|
uint page = uint.Parse (res.Groups ["page"].Value);
|
|
byte chan = byte.Parse (res.Groups ["chan"].Value);
|
|
uint param = uint.Parse (res.Groups ["param"].Value);
|
|
return string.Format ("Page {2} => Control-Change C({0}) Param-{1}", chan + 1, param, page);
|
|
}
|
|
res = regexPbEventID.Match (eventId);
|
|
if (res.Success) {
|
|
uint page = uint.Parse (res.Groups ["page"].Value);
|
|
byte chan = byte.Parse (res.Groups ["chan"].Value);
|
|
return string.Format ("Page {1} => PitchBend C({0})", chan + 1, page);
|
|
}
|
|
res = regexNoteEventID.Match (eventId);
|
|
if (res.Success) {
|
|
uint page = uint.Parse (res.Groups ["page"].Value);
|
|
byte chan = byte.Parse (res.Groups ["chan"].Value);
|
|
byte note = byte.Parse (res.Groups ["note"].Value);
|
|
return string.Format ("Page {2} => Note C({0}) Note-{1}", chan + 1, note, page);
|
|
}
|
|
return eventId;
|
|
}
|
|
|
|
IFeedbackInfo IEventProvider.GetFeedbackInfo (string eventId)
|
|
{
|
|
if (!eventlist.ContainsKey (eventId))
|
|
return null;
|
|
|
|
var res = regexCtrlEventID.Match (eventId);
|
|
if (res.Success) {
|
|
byte chan = byte.Parse (res.Groups ["chan"].Value);
|
|
uint param = uint.Parse (res.Groups ["param"].Value);
|
|
return new ctrlfeedbackinfo (this, eventlist [eventId], chan, param);
|
|
}
|
|
res = regexPbEventID.Match (eventId);
|
|
if (res.Success) {
|
|
byte chan = byte.Parse (res.Groups ["chan"].Value);
|
|
return new pitchbendfeedbackinfo (this, eventlist [eventId], chan);
|
|
}
|
|
return null;
|
|
|
|
}
|
|
|
|
#endregion
|
|
|
|
|
|
#region IDisposable implementation
|
|
|
|
bool disposed = false;
|
|
|
|
~MidiEventProvider ()
|
|
{
|
|
Dispose ();
|
|
}
|
|
|
|
public void Dispose ()
|
|
{
|
|
if (disposed)
|
|
return;
|
|
disposed = true;
|
|
AlsaSeqLib.Close ();
|
|
}
|
|
#endregion
|
|
|
|
public void Save (System.Xml.XmlElement parent)
|
|
{
|
|
System.Xml.XmlElement el = parent.OwnerDocument.CreateElement ("Midi");
|
|
parent.AppendChild (el);
|
|
el.SetAttribute ("maxpage", maxpage.ToString ());
|
|
|
|
System.Xml.XmlElement xmlEl;
|
|
foreach (MidiDev dev in knowndevices.Values) {
|
|
el.AppendChild (xmlEl = parent.OwnerDocument.CreateElement ("MidiDev"));
|
|
xmlEl.SetAttribute ("name", dev.Name);
|
|
xmlEl.SetAttribute ("feedback", dev.HasFeedback.ToString ());
|
|
}
|
|
|
|
foreach (byte ch in unpaginatedchannels) {
|
|
el.AppendChild (xmlEl = parent.OwnerDocument.CreateElement ("UPC"));
|
|
xmlEl.SetAttribute ("ch", ch.ToString ());
|
|
}
|
|
|
|
}
|
|
|
|
public void Load (System.Xml.XmlElement el)
|
|
{
|
|
if (el == null)
|
|
return;
|
|
maxpage = uint.Parse (el.TryGetAttribute ("maxpage", "8"));
|
|
|
|
foreach (var xd in el.GetElementsByTagName("MidiDev")) {
|
|
System.Xml.XmlElement xdev = xd as System.Xml.XmlElement;
|
|
string name = xdev.GetAttribute ("name");
|
|
if (!knowndevices.ContainsKey (name))
|
|
knowndevices.Add (name, new MidiDev (name));
|
|
knowndevices [name].HasFeedback = bool.Parse (xdev.TryGetAttribute ("feedback", "false"));
|
|
}
|
|
unpaginatedchannels.Clear ();
|
|
foreach (var xu in el.GetElementsByTagName("UPC")) {
|
|
System.Xml.XmlElement xupc = xu as System.Xml.XmlElement;
|
|
unpaginatedchannels.Add (byte.Parse (xupc.GetAttribute ("ch")));
|
|
}
|
|
|
|
AutoConnect ();
|
|
}
|
|
|
|
}
|
|
}
|