Manifest.json, Channel Router Sync. Alsa device enumeration.

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src/AlsaDriver.cpp

@@ -1895,8 +1895,14 @@ namespace pipedal
             std::vector<float*> &channelBuffers
         ) {
             size_t nChannels = channelSelection.size();
-            channelBuffers.resize(nChannels);
+            if (nChannels == 0)
+            {
+                channelBuffers.resize(1);
+                channelBuffers[0] = zeroInputBuffer;
+                return;
+            }
 
+            channelBuffers.resize(nChannels);
             for (size_t i = 0; i < nChannels; ++i) 
             {
                 int64_t deviceChannel = channelSelection[i];
@@ -1932,6 +1938,16 @@ namespace pipedal
         ) {
             size_t nChannels = channelSelection.size();
 
+            if (nChannels == 0)
+            {
+                channelBuffers.resize(1);
+                if (discardOutputBuffer != nullptr)
+                {
+                    discardOutputBuffer = AllocateAudioBuffer();
+                }
+                channelBuffers[0] = discardOutputBuffer;
+                return;
+            }
             channelBuffers.resize(nChannels);
             for (size_t i = 0; i < nChannels; ++i) 
             {

src/AudioHost.cpp

@@ -533,6 +533,7 @@ private:
 
     std::vector<std::shared_ptr<Lv2Pedalboard>> activePedalboards; // pedalboards that have been sent to the audio queue.
     Lv2Pedalboard *realtimeActivePedalboard = nullptr;
+    Lv2RoutingInserts realtimeRoutingInserts;
 
     uint32_t sampleRate = 0;
     uint64_t currentSample = 0;
@@ -894,6 +895,47 @@ private:
 
                 return false; // signal to caller that the effect has been replaced, and processing needs to start again.
             }
+            case RingBufferCommand::ReplaceRoutingInserts:
+            {
+                Lv2RoutingInserts body;
+                realtimeReader.readComplete(&body);
+
+                auto oldValue = this->realtimeRoutingInserts;
+                this->realtimeRoutingInserts = body;
+
+                realtimeWriter.RoutingInsertsReplaced(oldValue);
+
+                // invalidate the possibly no-good subscriptions. Model will update them shortly.
+                freeRealtimeVuConfiguration();
+                freeRealtimeMonitorPortSubscriptions();
+                cancelParameterRequests();
+
+                Lv2Pedalboard *mainInserts = body.mainInserts;
+                if (mainInserts)
+                {
+                    mainInserts->ResetAtomBuffers();
+                    // issue patch gets for all writable path properties.
+                    for (auto pEffect : mainInserts->GetEffects())
+                    {
+                        pEffect->RequestAllPathPatchProperties();
+                    }
+                    mainInserts->UpdateAudioPorts();
+                }
+                Lv2Pedalboard *auxInserts = body.auxInserts;
+                if (auxInserts)
+                {
+                    auxInserts->ResetAtomBuffers();
+                    // issue patch gets for all writable path properties.
+                    for (auto pEffect : auxInserts->GetEffects())
+                    {
+                        pEffect->RequestAllPathPatchProperties();
+                    }
+                    auxInserts->UpdateAudioPorts();
+                }
+                reEntered = false;
+
+                return false; // signal to caller that the effect has been replaced, and processing needs to start again.
+            }
             default:
                 throw PiPedalStateException("Unknown Ringbuffer command.");
             }
@@ -1549,6 +1591,20 @@ public:
                                 hostReader.read(&body);
                                 OnActivePedalboardReleased(body.oldEffect);
                             }
+                            else if (command == RingBufferCommand::RoutingInsertsReplaced)
+                            {
+                                Lv2RoutingInserts body;
+                                hostReader.read(&body);
+                                if (body.mainInserts)
+                                {
+                                    OnActivePedalboardReleased(body.mainInserts);
+                                }
+                                if (body.auxInserts)
+                                {
+                                    OnActivePedalboardReleased(body.auxInserts);
+                                }
+                                
+                            }
                             else if (command == RingBufferCommand::FreeSnapshot)
                             {
                                 IndexedSnapshot *snapshot;
@@ -1782,6 +1838,25 @@ public:
         }
     }
 
+    virtual void SetChannelRoutingInserts(
+            const std::shared_ptr<Lv2Pedalboard> &mainInserts,
+            const std::shared_ptr<Lv2Pedalboard> &auxInserts
+    ) override {
+        if (active && mainInserts) 
+        {
+            mainInserts->Activate();
+            this->activePedalboards.push_back(mainInserts);
+        }        
+        if (active && auxInserts) 
+        {
+            auxInserts->Activate();
+            this->activePedalboards.push_back(auxInserts);
+        }
+        Lv2RoutingInserts routingInserts { mainInserts: mainInserts.get(), auxInserts: auxInserts.get()};
+        hostWriter.ReplaceRoutingInserts(routingInserts);
+    }
+
+
     virtual void SetBypass(uint64_t instanceId, bool enabled)
     {
         std::lock_guard guard(mutex);

src/AudioHost.hpp

@@ -238,6 +238,12 @@ namespace pipedal
 
         virtual void SetPedalboard(const std::shared_ptr<Lv2Pedalboard> &pedalboard) = 0;
 
+        virtual void SetChannelRoutingInserts(
+            const std::shared_ptr<Lv2Pedalboard> &mainInserts,
+            const std::shared_ptr<Lv2Pedalboard> &auxInserts
+        ) = 0;
+
+
         virtual void SetControlValue(uint64_t instanceId, const std::string &symbol, float value) = 0;
         virtual void SetInputVolume(float value) = 0;
         virtual void SetOutputVolume(float value) = 0;

src/CMakeLists.txt

@@ -740,6 +740,7 @@ add_executable(pipedalconfig
     ModFileTypes.cpp ModFileTypes.hpp
     MimeTypes.cpp MimeTypes.hpp
     PiPedalConfiguration.hpp PiPedalConfiguration.cpp
+    PiPedalAlsa.hpp PiPedalAlsa.cpp
     JackServerSettings.hpp JackServerSettings.cpp
     SystemConfigFile.hpp SystemConfigFile.cpp
     WifiChannelSelectors.cpp WifiChannelSelectors.hpp
@@ -817,6 +818,7 @@ add_executable(pipedaladmind AdminMain.cpp CommandLineParser.hpp
 
     SetWifiConfig.cpp SetWifiConfig.hpp
     JackServerSettings.hpp JackServerSettings.cpp
+    PiPedalAlsa.hpp PiPedalAlsa.cpp
     Lv2SystemdLogger.hpp Lv2SystemdLogger.cpp
 
     SystemConfigFile.hpp SystemConfigFile.cpp
@@ -824,7 +826,7 @@ add_executable(pipedaladmind AdminMain.cpp CommandLineParser.hpp
     asan_options.cpp
 
     )
-target_link_libraries(pipedaladmind PRIVATE PiPedalCommon pthread atomic stdc++fs systemd )
+target_link_libraries(pipedaladmind PRIVATE PiPedalCommon pthread atomic stdc++fs systemd asound)
 
 add_executable(processcopyrights copyrightMain.cpp
     CommandLineParser.hpp

src/ChannelRouterSettings.cpp

@@ -135,9 +135,20 @@ ChannelRouterSettings::ChannelRouterSettings()
     
 }
 
+std::vector<ChannelRouterPresetIndexEntry> ChannelRouterPresetBank::getIndexEntries()
+{
+    std::vector<ChannelRouterPresetIndexEntry> result;
+    for (auto &entry: entries_)
+    {
+        result.push_back(ChannelRouterPresetIndexEntry{entry->id(), entry->name()});
+    }
+    return result;
+}
+
 
 JSON_MAP_BEGIN(ChannelRouterSettings)
 JSON_MAP_REFERENCE(ChannelRouterSettings, configured)
+JSON_MAP_REFERENCE(ChannelRouterSettings, changed)
 JSON_MAP_REFERENCE(ChannelRouterSettings, channelRouterPresetId)
 JSON_MAP_REFERENCE(ChannelRouterSettings, mainInputChannels)
 JSON_MAP_REFERENCE(ChannelRouterSettings, mainOutputChannels)
@@ -149,3 +160,22 @@ JSON_MAP_REFERENCE(ChannelRouterSettings, sendInputChannels)
 JSON_MAP_REFERENCE(ChannelRouterSettings, sendOutputChannels)   
 JSON_MAP_REFERENCE(ChannelRouterSettings, controlValues)
 JSON_MAP_END()
+
+JSON_MAP_BEGIN(ChannelRouterPresetIndexEntry)
+JSON_MAP_REFERENCE(ChannelRouterPresetIndexEntry, id)
+JSON_MAP_REFERENCE(ChannelRouterPresetIndexEntry, name)
+JSON_MAP_END()
+
+
+JSON_MAP_BEGIN(ChannelRouterPresetBankEntry)
+JSON_MAP_REFERENCE(ChannelRouterPresetBankEntry, id)
+JSON_MAP_REFERENCE(ChannelRouterPresetBankEntry, name)
+JSON_MAP_REFERENCE(ChannelRouterPresetBankEntry, channelRouterSettings)
+JSON_MAP_END()
+
+JSON_MAP_BEGIN(ChannelRouterPresetBank)
+JSON_MAP_REFERENCE(ChannelRouterPresetBank, nextId)
+JSON_MAP_REFERENCE(ChannelRouterPresetBank, version)
+JSON_MAP_REFERENCE(ChannelRouterPresetBank, entries)
+JSON_MAP_END()
+

src/ChannelRouterSettings.hpp

@@ -35,6 +35,7 @@ namespace pipedal
 
         bool configured_ = false;
         int64_t channelRouterPresetId_ = -1;
+        bool changed_ = false;
 
         std::vector<int64_t> mainInputChannels_ = {1, 1};
         std::vector<int64_t> mainOutputChannels_ = {0, 1};
@@ -60,6 +61,7 @@ namespace pipedal
 
         JSON_GETTER_SETTER(configured)
         JSON_GETTER_SETTER(channelRouterPresetId)
+        JSON_GETTER_SETTER(changed)
         JSON_GETTER_SETTER_REF(mainInputChannels)
         JSON_GETTER_SETTER_REF(mainOutputChannels)
         JSON_GETTER_SETTER_REF(mainInserts)
@@ -110,4 +112,56 @@ namespace pipedal
         std::vector<int64_t> sendOutputChannels_;
     };
 
+    class ChannelRouterPresetIndexEntry {
+    private:
+        int64_t id_ = -1;
+        std::string name_;
+    public: 
+        ChannelRouterPresetIndexEntry() = default;
+        ChannelRouterPresetIndexEntry(const ChannelRouterPresetIndexEntry&other) = default;
+        ChannelRouterPresetIndexEntry(ChannelRouterPresetIndexEntry&&other) = default;
+        ChannelRouterPresetIndexEntry&operator=(const ChannelRouterPresetIndexEntry&other) = default;
+        ChannelRouterPresetIndexEntry&operator=(ChannelRouterPresetIndexEntry&&other) = default;
+
+        ChannelRouterPresetIndexEntry(int64_t id, const std::string&name)
+        : id_(id),name_(name) { }
+
+
+        JSON_GETTER_SETTER(id)
+        JSON_GETTER_SETTER_REF(name)
+
+        DECLARE_JSON_MAP(ChannelRouterPresetIndexEntry);
+    };
+
+
+    class ChannelRouterPresetBankEntry {
+    private:
+        int64_t id_;
+        std::string name_;
+        ChannelRouterSettings channelRouterSettings_;
+    public: 
+        JSON_GETTER_SETTER(id)
+        JSON_GETTER_SETTER_REF(name)
+        JSON_GETTER_SETTER_REF(channelRouterSettings)
+
+        DECLARE_JSON_MAP(ChannelRouterPresetBankEntry);
+
+    };
+
+    class ChannelRouterPresetBank {
+    private:
+        int64_t nextId_ = 1;
+        int64_t version_ = 1;
+        std::vector<std::shared_ptr<ChannelRouterPresetBankEntry>> entries_; 
+    public:
+        
+        JSON_GETTER_SETTER(nextId)
+        JSON_GETTER_SETTER(version)
+        JSON_GETTER_SETTER_REF(entries)
+
+        std::vector<ChannelRouterPresetIndexEntry> getIndexEntries();
+
+        DECLARE_JSON_MAP(ChannelRouterPresetBank);
+    };
+
 }

src/JackConfiguration.cpp

@@ -149,6 +149,8 @@ void JackConfiguration::AlsaInitialize(
         }
         } catch (const std::exception& /*ignore*/)
         {
+            this->isValid_ = false;
+            this->errorStatus_ = "Not configured.";
             throw;
         }
 

src/JackServerSettings.cpp

@@ -28,6 +28,7 @@
 #include <filesystem>
 #include "Lv2Log.hpp"
 #include "SysExec.hpp"
+#include "PiPedalAlsa.hpp"
 
 #define DRC_FILENAME "/etc/jackdrc"
 
@@ -66,27 +67,35 @@ static std::string GetJackStringArg(const std::vector<std::string> &args, const
     for (size_t i = 1; i < args.size(); ++i)
     {
         auto pos = args[i].rfind(longOption, 0);
-        if (pos != std::string::npos) {
+        if (pos != std::string::npos)
+        {
             if (args[i].length() == longOption.length())
             {
-                if (i == args.size()-1) {
+                if (i == args.size() - 1)
+                {
                     throw PiPedalException("Can't read Jack configuration.");
                 }
                 strVal = args[i + 1];
-            } else {
+            }
+            else
+            {
                 strVal = args[i].substr(longOption.length());
             }
             break;
         }
         pos = args[i].rfind(shortOption, 0);
-        if (pos != std::string::npos) {
+        if (pos != std::string::npos)
+        {
             if (args[i].length() == shortOption.length())
             {
-                if (i == args.size()-1) {
+                if (i == args.size() - 1)
+                {
                     throw PiPedalException("Can't read Jack configuration.");
                 }
                 strVal = args[i + 1];
-            } else {
+            }
+            else
+            {
                 strVal = args[i].substr(shortOption.length());
             }
             break;
@@ -108,144 +117,42 @@ static std::int32_t GetJackArg(const std::vector<std::string> &args, const std::
     }
 }
 
-
-void JackServerSettings::ReadJackDaemonConfiguration()
+static std::string GetAlsaDeviceName(const std::vector<AlsaDeviceInfo> &availableDevices, const std::string &id)
 {
-    #if !JACK_HOST
-        return;
-    #endif
-    this->valid_ = false;
-
-    std::string lastLine;
+    if (id.empty())
+        return "";
+    std::string name;
+    for (const auto &availableDevice : availableDevices)
     {
-        ifstream input(DRC_FILENAME);
-
-        if (!input.is_open())
+        if (availableDevice.id_ == id)
         {
-            return;
-        }
-
-        while (true)
-        {
-            std::string line;
-            std::getline(input,line);
-            if (line.length() != 0) {
-                lastLine = line;
-            }
-            if (input.eof()) {
+            name = availableDevice.name_;
             break;
         }
     }
-        try
+    if (name.empty())
     {
-            std::vector<std::string> argv = SplitArgs(lastLine.c_str());
-            for (auto i = argv.begin(); i != argv.end(); ++i)
+        auto pos = id.find(":");
+        if (pos != std::string::npos)
         {
-                if ((*i) == "-dalsa") {
-                    argv.erase(i);
-                    break;
+            name = id.substr(pos + 1);
         }
     }
-            this->bufferSize_ = GetJackArg(argv, "-p", "--period");
-            this->numberOfBuffers_ = (uint32_t)GetJackArg(argv, "-n", "--nperiods");
-            this->sampleRate_ = (uint32_t)GetJackArg(argv, "-r", "--rate");
-            // read new dual device flags, fallback on old -d/--device
-            std::string capDev  = GetJackStringArg(argv, "-C", "--capture");
-            std::string playDev = GetJackStringArg(argv, "-P", "--playback");
-            std::string dev     = "";
-            try { dev = GetJackStringArg(argv, "-d", "--device"); } catch(...) {}
-            this->alsaInputDevice_  = capDev.empty()  ? dev : capDev;
-            this->alsaOutputDevice_ = playDev.empty() ? dev : playDev;
-            this->valid_ = true;
+    return name;
 }
-        catch (std::exception &)
+void JackServerSettings::FixUpDeviceNames()
+{
+    if (
+        ((!this->alsaInputDevice_.empty()) && this->alsaInputDeviceName_.empty()) ||
+        (!this->alsaOutputDevice_.empty()) && this->alsaOutputDeviceName_.empty())
     {
-            //Lv2Log::error("Can't parse " DRC_FILENAME);
-        }
-    }
-}
 
-void JackServerSettings::WriteDaemonConfig()
-{
-    #if JACK_HOST
-    this->valid_ = false;
+        PiPedalAlsaDevices& alsaDevices = PiPedalAlsaDevices::instance();
+        std::vector<AlsaDeviceInfo> availableDevices = alsaDevices.GetAlsaDevices();
 
-    std::vector<std::string> precedingLines;
-    std::vector<std::string> argv;
-    std::string lastLine;
-
-    if (std::filesystem::exists(DRC_FILENAME)) {
-        ifstream input(DRC_FILENAME);
-
-        if (!input.is_open())
-        {
-            return;
+        this->alsaInputDeviceName_ = GetAlsaDeviceName(availableDevices, this->alsaInputDevice_);
+        this->alsaOutputDeviceName_ = GetAlsaDeviceName(availableDevices, this->alsaOutputDevice_);
     }
-
-        while (true)
-        {
-            if (input.eof())
-            {
-                break;
-            }
-            std::getline(input,lastLine);
-            precedingLines.push_back(lastLine);
-            if (input.eof())
-            {
-                break;
-            }
-        }
-        // erase blank lines at the end.
-        while (precedingLines.size() != 0 && precedingLines[precedingLines.size()-1] == "")
-        {
-            precedingLines.erase(precedingLines.begin()+precedingLines.size()-1);
-        }
-        // erase the last line, which should contain the command invocation.
-        if (precedingLines.size() != 0)
-        {
-            precedingLines.erase(precedingLines.begin()+precedingLines.size()-1);
-        }
-     }
-    // write to the output.
-    try
-    {
-        ofstream output(DRC_FILENAME);
-        if (!output.is_open())
-        {
-            throw PiPedalException("Can't write " DRC_FILENAME);
-        }
-        if (precedingLines.size() == 0)
-        {
-            // jack1 incantation for promiscuous servers.
-            output << "#!/bin/sh" <<endl;
-            output << "export JACK_PROMISCUOUS_SERVER=audio" << endl;
-            output << "export JACK_NO_AUDIO_RESERVATION=1" << endl;
-            output << "umask 0" << endl;
-        }
-        for (auto line : precedingLines)
-        {
-            output << line << endl;
-        }
-        // the style used by qjackctl. :-/
-        // Lower to -P70 in order to allow the USB soft-irq to run at higher priority than JACK (it runs at 80).
-        output << "/usr/bin/jackd "
-            << "-R -P70 --silent"
-            << " -dalsa -d" << this->alsaDevice_ 
-            << " -r" << this->sampleRate_ 
-            << " -p" << this->bufferSize_ 
-            << " -n" << this->numberOfBuffers_ << " -Xseq" 
-            << endl;
-        if (silentSysExec("/usr/bin/chmod 755 " DRC_FILENAME) != 0)
-        {
-            Lv2Log::error("Failed to set permissions on /etc/jackdrc");
-        }
-    }
-    catch (const std::exception &e)
-    {
-    }
-    #else 
-        throw PiPedalStateException("JACK_HOST not enabled at compile time.");
-    #endif
 }
 
 JSON_MAP_BEGIN(JackServerSettings)
@@ -256,6 +163,8 @@ JSON_MAP_REFERENCE(JackServerSettings, isJackAudio)
 JSON_MAP_REFERENCE(JackServerSettings, alsaDevice) // legacy field
 JSON_MAP_REFERENCE(JackServerSettings, alsaInputDevice)
 JSON_MAP_REFERENCE(JackServerSettings, alsaOutputDevice)
+JSON_MAP_REFERENCE(JackServerSettings, alsaInputDeviceName)
+JSON_MAP_REFERENCE(JackServerSettings, alsaOutputDeviceName)
 JSON_MAP_REFERENCE(JackServerSettings, sampleRate)
 JSON_MAP_REFERENCE(JackServerSettings, bufferSize)
 JSON_MAP_REFERENCE(JackServerSettings, numberOfBuffers)

src/JackServerSettings.hpp

@@ -33,7 +33,9 @@ namespace pipedal
         bool isJackAudio_ = JACK_HOST ? true : false;
         bool rebootRequired_ = false;
         std::string alsaInputDevice_;
+        std::string alsaInputDeviceName_;
         std::string alsaOutputDevice_;
+        std::string alsaOutputDeviceName_;
         std::string alsaDevice_; // legacy
         uint64_t sampleRate_ = 0;
         uint32_t bufferSize_ = 64;
@@ -44,6 +46,7 @@ namespace pipedal
         JackServerSettings(
             const std::string &alsaInputDevice,
             const std::string &alsaOutputDevice,
+
             uint64_t sampleRate,
             uint32_t bufferSize,
             uint32_t numberOfBuffers)
@@ -55,6 +58,7 @@ namespace pipedal
               numberOfBuffers_(numberOfBuffers),
               isOnboarding_(false)
         {
+            FixUpDeviceNames();
         }
 
         uint64_t GetSampleRate() const { return sampleRate_; }
@@ -62,11 +66,13 @@ namespace pipedal
         uint32_t GetBufferSize() const { return bufferSize_; }
         uint32_t GetNumberOfBuffers() const { return numberOfBuffers_; }
         const std::string &GetAlsaInputDevice()  const { return alsaInputDevice_; }
+        const std::string &GetAlsaInputDeviceName()  const { return alsaInputDeviceName_; }
         const std::string &GetAlsaOutputDevice() const { return alsaOutputDevice_; }
+        const std::string &GetAlsaOutputDeviceName() const { return alsaOutputDeviceName_; }
         const std::string &GetLegacyAlsaDevice() const { return alsaDevice_; } //legacy
 
-        void SetAlsaInputDevice(const std::string &d){ alsaInputDevice_ = d; }
-        void SetAlsaOutputDevice(const std::string &d){ alsaOutputDevice_ = d; }
+        void SetAlsaInputDevice(const std::string &id, const std::string&name){ alsaInputDevice_ = id; alsaInputDeviceName_ = name; }
+        void SetAlsaOutputDevice(const std::string &id, const std::string&name){ alsaOutputDevice_ = id; alsaOutputDeviceName_ = name; }
         void SetLegacyAlsaDevice(const std::string &d) { alsaDevice_ = d; }
         
         void UseDummyAudioDevice() {
@@ -74,7 +80,9 @@ namespace pipedal
             if (sampleRate_ == 0) sampleRate_ = 48000;
             this->alsaDevice_  = "dummy:channels_2";
             this->alsaInputDevice_  = "dummy:channels_2";
+            this->alsaInputDeviceName_ = "Stopped";
             this->alsaOutputDevice_  = "dummy:channels_2";
+            this->alsaOutputDeviceName_ = "Stopped";
         }
         bool IsDummyAudioDevice() const {
             return 
@@ -83,11 +91,8 @@ namespace pipedal
                 || this->alsaInputDevice_.starts_with("dummy:");
         }
 
-        void ReadJackDaemonConfiguration();
-
         bool IsValid() const { return valid_; }
 
-        void WriteDaemonConfig(); // requires root perms.
         void SetRebootRequired(bool value)
         {
             rebootRequired_ = value;
@@ -106,6 +111,7 @@ namespace pipedal
                    this->bufferSize_       == other.bufferSize_ &&
                    this->numberOfBuffers_  == other.numberOfBuffers_;
         }
+        void FixUpDeviceNames();
 
         DECLARE_JSON_MAP(JackServerSettings);
     };

src/PiLatencyMain.cpp

@@ -103,8 +103,7 @@ void PrintHelp()
 
 void ListDevices()
 {
-    PiPedalAlsaDevices alsaDevices;
-    auto devices = alsaDevices.GetAlsaDevices();
+    auto devices = PiPedalAlsaDevices::instance().GetAlsaDevices();
 
     PrettyPrinter pp;
     if (devices.size() == 0)

src/PiPedalAlsa.cpp

@@ -160,11 +160,14 @@ std::vector<AlsaDeviceInfo> PiPedalAlsaDevices::GetAlsaDevices()
 
     std::vector<AlsaDeviceInfo> result;
 
-    int cardNum = -1; // Start with first card
     int err;
 
     std::vector<ProcAlsaDevice> procAlsaDevices = getProcAlsaDevices();
 
+
+    snd_pcm_info_t *pcminfo = nullptr;
+    snd_pcm_info_alloca(&pcminfo);
+
     for (const auto &procAlsaDevice: procAlsaDevices)
     {
         std::stringstream ss;
@@ -198,13 +201,60 @@ std::vector<AlsaDeviceInfo> PiPedalAlsaDevices::GetAlsaDevices()
         err = snd_ctl_card_info(hDevice, alsaInfo);
         if (err == 0)
         {
+
             AlsaDeviceInfo info;
-            info.cardId_ = cardNum;
+            info.cardId_ = procAlsaDevice.cardId;
             info.id_ = std::string("hw:") + snd_ctl_card_info_get_id(alsaInfo);
             const char *driver = snd_ctl_card_info_get_driver(alsaInfo);
             (void)driver;
 
-            info.name_ = snd_ctl_card_info_get_name(alsaInfo);
+            snd_pcm_info_set_device(pcminfo, procAlsaDevice.subdeviceId);
+            snd_pcm_info_set_subdevice(pcminfo, 0);
+            snd_pcm_info_set_stream(pcminfo, SND_PCM_STREAM_PLAYBACK);
+
+            if ((err = snd_ctl_pcm_info(hDevice, pcminfo)) < 0) {
+                snd_pcm_info_set_device(pcminfo, procAlsaDevice.subdeviceId);
+                snd_pcm_info_set_subdevice(pcminfo, 0);
+                snd_pcm_info_set_stream(pcminfo, SND_PCM_STREAM_CAPTURE);
+
+                if ((err = snd_ctl_pcm_info(hDevice, pcminfo)) < 0) {
+                    if (err != -ENOENT)
+                        Lv2Log::warning("control digital audio info (%i): %s", info.cardId_, snd_strerror(err));
+                    continue;
+                }
+            }
+            /*
+            Names and IDs are f-ed up in ALSA. id seems to be vaguely reliable. names are garbage!
+            Sample data from Unbuntu 24.04.
+
+            snd_ctl_card_info_get_id(info) snd_ctl_card_info_get_name(alsaInfo) subdevice snd_pcm_info_get_id(pcminfo) snd_pcm_info_get_name(pcminfo)
+            Generic                        HD-Audio Generic                     3         HDMI 0                       Acer S231HL
+            Generic                        HD-Audio Generic                     3         HDMI 0                       ASUS MG28U
+            Generic_1                      HD-Audio Generic                     0         CX11970 Analog               CX11970 Analog
+            M2                             M2                                   USB Audio                    USB Audio
+            CODEC                          USB AUDIO  CODEC                     USB Audio                    USB Audio
+
+            */
+            std::string name;
+            {
+                // let's assume (without evidence) that names get localized, but ids do not. :-/
+                std::string cardId = snd_ctl_card_info_get_id(alsaInfo);
+                std::string cardName = snd_ctl_card_info_get_name(alsaInfo);
+                std::string pcmId = snd_pcm_info_get_id(pcminfo);
+                std::string pcmName = snd_pcm_info_get_name(pcminfo);
+                std::string driver = snd_ctl_card_info_get_driver(alsaInfo);
+                if (driver == "USB-Audio")
+                {
+                    name = SS("USB - " << cardId);
+                }
+                else if (pcmId == pcmName)
+                {
+                    name = pcmId;
+                } else {
+                    name = SS(pcmId << '[' << pcmName << ']');
+                }
+            }
+            info.name_ = name;
             info.longName_ = snd_ctl_card_info_get_longname(alsaInfo);
 
             // we can't read our own device if it's open so use data that gets
@@ -219,6 +269,8 @@ std::vector<AlsaDeviceInfo> PiPedalAlsaDevices::GetAlsaDevices()
                 result.push_back(cachedInfo);
                 continue;
             }
+
+
             snd_pcm_t *captureDevice = nullptr;
             snd_pcm_t *playbackDevice = nullptr;
             auto rc = snd_pcm_open(&captureDevice, cardId.c_str(), SND_PCM_STREAM_CAPTURE, SND_PCM_NONBLOCK);
@@ -248,6 +300,7 @@ std::vector<AlsaDeviceInfo> PiPedalAlsaDevices::GetAlsaDevices()
 
             if (captureOk || playbackOk)
             {
+
                 snd_pcm_t *hDevice = captureOk ? captureDevice : playbackDevice;
                 snd_pcm_hw_params_t *params = nullptr;
                 err = snd_pcm_hw_params_malloc(&params);
@@ -637,6 +690,17 @@ AlsaMidiDeviceInfo::AlsaMidiDeviceInfo(const char *name, const char *description
     this->subdevice_ = subdevice;
 }
 
+std::unique_ptr<PiPedalAlsaDevices> PiPedalAlsaDevices::instance_;
+
+PiPedalAlsaDevices&PiPedalAlsaDevices::instance() {
+    if (!instance_)
+    {
+        instance_ = std::unique_ptr<PiPedalAlsaDevices>(new PiPedalAlsaDevices());
+    }
+    return (*instance_);
+}
+
+
 JSON_MAP_BEGIN(AlsaDeviceInfo)
 JSON_MAP_REFERENCE(AlsaDeviceInfo, cardId)
 JSON_MAP_REFERENCE(AlsaDeviceInfo, id)

src/PiPedalAlsa.hpp

@@ -71,12 +71,16 @@ namespace pipedal {
     };
 
     class PiPedalAlsaDevices {
-
+    private:
+        static std::unique_ptr<PiPedalAlsaDevices> instance_;
+        PiPedalAlsaDevices() { }
         std::map<std::string,AlsaDeviceInfo> cachedDevices;
 
         bool getCachedDevice(const std::string&name, AlsaDeviceInfo*pResult);
         void cacheDevice(const std::string&name, const AlsaDeviceInfo&deviceInfo);
+        
     public:
+        static PiPedalAlsaDevices&instance();
         
         std::vector<AlsaDeviceInfo> GetAlsaDevices();
     };

src/PiPedalAlsaTest.cpp

@@ -34,7 +34,7 @@ using namespace std;
 static void DiscoveryTest()
 {
     cout << "--- Discovery" << endl;
-    PiPedalAlsaDevices devices;
+    PiPedalAlsaDevices &devices = PiPedalAlsaDevices::instance();
     auto result = devices.GetAlsaDevices();
     std::cout << result.size() << " ALSA devices found." << std::endl;
 

src/PiPedalModel.cpp

@@ -83,12 +83,9 @@ PiPedalModel::PiPedalModel()
     this->updater->Start();
     this->currentUpdateStatus = updater->GetCurrentStatus();
     this->pedalboard = Pedalboard::MakeDefault(Pedalboard::PedalboardType::MainPedalboard);
-#if JACK_HOST
-    this->jackServerSettings = this->storage.GetJackServerSettings(); // to get onboarding flag.
-    this->jackServerSettings.ReadJackDaemonConfiguration();
-#else
+
     this->jackServerSettings = this->storage.GetJackServerSettings();
-#endif
+
     updater->SetUpdateListener(
         [this](const UpdateStatus &updateStatus)
         {
@@ -224,21 +221,22 @@ void PiPedalModel::Init(const PiPedalConfiguration &configuration)
 
     this->systemMidiBindings = storage.GetSystemMidiBindings();
 
-#if JACK_HOST
-    this->jackConfiguration = this->jackConfiguration.JackInitialize();
-#else
     this->jackServerSettings = storage.GetJackServerSettings();
+    try
+    {
         this->jackConfiguration.AlsaInitialize(jackServerSettings);
-#endif
+    }
+    catch (const std::exception &)
+    {
+        //
+    }
 
     this->channelRouterSettings = storage.GetChannelRouterSettings();
     pluginHost.OnConfigurationChanged(
         jackConfiguration,
         storage.GetChannelSelection());
-
 }
 
-
 int64_t PiPedalModel::DownloadModelsFromTone3000(
     int64_t clientId,
     Tone3000DownloadType downloadType,
@@ -271,14 +269,12 @@ int64_t PiPedalModel::DownloadModelsFromTone3000(
     return tone3000Downloader->RequestDownload(
         downloadType,
         downloadPath,
-        tone3000Url
-    );
+        tone3000Url);
 }
 
 void PiPedalModel::CancelTone3000Download(
     int64_t clientId,
-    int64_t downloadHandle
-)
+    int64_t downloadHandle)
 {
     std::lock_guard<std::recursive_mutex> lock(mutex);
 
@@ -358,7 +354,9 @@ void PiPedalModel::LoadLv2PluginInfo()
             {
                 PluginPresets pluginPresets = pluginHost.GetFactoryPluginPresets(plugin->uri());
                 storage.SavePluginPresets(plugin->uri(), pluginPresets);
-            } else {
+            }
+            else
+            {
                 if (pluginPresetIndexVersion == 0)
                 {
                     if (plugin->uri() == "http://two-play.com/plugins/toob-convolution-reverb" || plugin->uri() == "http://two-play.com/plugins/toob-convolution-reverb-stereo")
@@ -371,7 +369,6 @@ void PiPedalModel::LoadLv2PluginInfo()
                                 plugin->uri(),
                                 pluginPreset);
                         }
-
                     }
                 }
             }
@@ -773,11 +770,15 @@ void PiPedalModel::SetPedalboardItemEnable(int64_t clientId, int64_t pedalItemId
     {
         this->pedalboard.SetItemEnabled(pedalItemId, enabled);
         PedalboardItem *pPedalboardItem = this->pedalboard.GetItem(pedalItemId);
-        if (pPedalboardItem) {
+        if (pPedalboardItem)
+        {
             Lv2PluginInfo::ptr pluginInfo = GetPluginInfo(pPedalboardItem->uri());
-            if (pluginInfo) {
-                for (auto &port: pluginInfo->ports()) {
-                    if (port->is_bypass()) {
+            if (pluginInfo)
+            {
+                for (auto &port : pluginInfo->ports())
+                {
+                    if (port->is_bypass())
+                    {
                         pPedalboardItem->SetControlValue(port->symbol(), enabled ? 1.0 : 0.0f);
                     }
                 }
@@ -1625,7 +1626,6 @@ std::vector<AlsaSequencerPortSelection> PiPedalModel::GetAlsaSequencerPorts()
     return result;
 }
 
-
 void PiPedalModel::FireChannelRouterSettingsChanged(int64_t clientId)
 {
     std::lock_guard<std::recursive_mutex> guard{mutex};
@@ -2129,7 +2129,6 @@ std::shared_ptr<Lv2PluginInfo> PiPedalModel::GetPluginInfo(const std::string &ur
     return pluginHost.GetPluginInfo(uri);
 }
 
-
 void PiPedalModel::UpdateDefaults(SnapshotValue &snapshotValue, const PedalboardItem *pedalboardItem_)
 {
     std::shared_ptr<Lv2PluginInfo> pPlugin = pluginHost.GetPluginInfo(pedalboardItem_->uri());
@@ -2166,7 +2165,8 @@ void PiPedalModel::UpdateDefaults(SnapshotValue&snapshotValue, const PedalboardI
         if (pPlugin->uri() == "http://two-play.com/plugins/toob-nam")
         {
             ControlValue *pVersion = snapshotValue.GetControlValue("version");
-            if (pVersion == nullptr) {
+            if (pVersion == nullptr)
+            {
                 ControlValue *pValue = snapshotValue.GetControlValue("inputCalibrationMode");
                 if (pValue == nullptr)
                 {
@@ -2175,13 +2175,16 @@ void PiPedalModel::UpdateDefaults(SnapshotValue&snapshotValue, const PedalboardI
                 }
                 // convert old gate threshold to new gate threshold.
                 ControlValue *pGateValue = snapshotValue.GetControlValue("gate");
-                if (pGateValue) {
+                if (pGateValue)
+                {
                     float value = pGateValue->value();
                     // Is the gate disabled?
                     if (value <= -100.0f)
                     {
                         value = -120.0f; // "disabled in new range."
-                    } else {
+                    }
+                    else
+                    {
                         value = value * 0.5; // correct the bug in original implementation.
                     }
                     snapshotValue.SetControlValue("gate", value);
@@ -2245,7 +2248,8 @@ void PiPedalModel::UpdateDefaults(PedalboardItem *pedalboardItem, std::unordered
         if (pPlugin->uri() == "http://two-play.com/plugins/toob-nam")
         {
             ControlValue *pVersion = pedalboardItem->GetControlValue("version");
-            if (pVersion == nullptr) {
+            if (pVersion == nullptr)
+            {
                 ControlValue *pValue = pedalboardItem->GetControlValue("inputCalibrationMode");
                 if (pValue == nullptr)
                 {
@@ -2254,13 +2258,16 @@ void PiPedalModel::UpdateDefaults(PedalboardItem *pedalboardItem, std::unordered
                 }
                 // convert old gate threshold to new gate threshold.
                 ControlValue *pGateValue = pedalboardItem->GetControlValue("gate");
-                if (pGateValue) {
+                if (pGateValue)
+                {
                     float value = pGateValue->value();
                     // Is the gate disabled?
                     if (value <= -100.0f)
                     {
                         value = -120.0f; // "disabled in new range."
-                    } else {
+                    }
+                    else
+                    {
                         value = value * 0.5; // correct the bug in original implementation.
                     }
                     pedalboardItem->SetControlValue("gate", value);
@@ -2284,12 +2291,14 @@ void PiPedalModel::UpdateDefaults(PedalboardItem *pedalboardItem, std::unordered
                     {
                         pedalboardItem->controlValues().push_back(
                             pipedal::ControlValue(port->symbol().c_str(), value));
-                    } else {
+                    }
+                    else
+                    {
                         pValue->value(value);
                     }
-
-
-                } else {
+                }
+                else
+                {
                     ControlValue *pValue = pedalboardItem->GetControlValue(port->symbol());
                     if (pValue == nullptr)
                     {
@@ -2357,7 +2366,9 @@ void PiPedalModel::UpdateDefaults(Snapshot *snapshot, std::unordered_map<int64_t
             // plugin is no longer present. Remove from the snapshot.
             snapshot->values_.erase(snapshot->values_.begin() + i);
             --i;
-        } else {
+        }
+        else
+        {
             UpdateDefaults(value, f->second);
         }
     }
@@ -3376,7 +3387,6 @@ std::vector<PresetIndexEntry> PiPedalModel::RequestBankPresets(int64_t bankInsta
     std::lock_guard<std::recursive_mutex> lock(mutex);
 
     return storage.RequestBankPresets(bankInstanceId);
-
 }
 
 int64_t PiPedalModel::ImportPresetsFromBank(int64_t bankInstanceId, const std::vector<int64_t> &presets)
@@ -3386,17 +3396,14 @@ int64_t PiPedalModel::ImportPresetsFromBank(int64_t bankInstanceId, const std::v
 
     FirePresetsChanged(-1);
     return lastAdded;
-
 }
 int64_t PiPedalModel::CopyPresetsToBank(int64_t bankInstanceId, const std::vector<int64_t> &presets)
 {
     std::lock_guard<std::recursive_mutex> lock(mutex);
     uint64_t lastAdded = storage.CopyPresetsToBank(bankInstanceId, presets);
     return lastAdded;
-
 }
 
-
 ChannelRouterSettings::ptr PiPedalModel::GetChannelRouterSettings()
 {
     std::lock_guard<std::recursive_mutex> lock(mutex);
@@ -3415,11 +3422,8 @@ void PiPedalModel::SetChannelRouterSettings(int64_t clientId,ChannelRouterSettin
     RestartAudio(); // no lock to avoid mutex deadlock when reader thread is sending notifications..
 
     this->FireChannelRouterSettingsChanged(clientId);
-
 }
 
-
-
 std::string PiPedalModel::Tone3000ThumbnailDirectory()
 {
     return "/var/pipedal/tone3000_thumbnails";

src/PiPedalModel.hpp

@@ -152,7 +152,7 @@ namespace pipedal
         std::unique_ptr<AvahiService> avahiService;
         uint16_t webPort;
 
-        PiPedalAlsaDevices alsaDevices;
+        PiPedalAlsaDevices &alsaDevices = PiPedalAlsaDevices::instance();
         std::recursive_mutex mutex;
 
         AdminClient adminClient;

src/RingBufferReader.hpp

@@ -45,11 +45,19 @@ namespace pipedal
         uint8_t cc2_; 
     };
 
+    struct Lv2RoutingInserts {
+
+        Lv2Pedalboard*mainInserts = nullptr;
+        Lv2Pedalboard*auxInserts = nullptr;; 
+    };
+
     enum class RingBufferCommand : int64_t
     {
         Invalid = 0,
         ReplaceEffect,
         EffectReplaced,
+        ReplaceRoutingInserts,
+        RoutingInsertsReplaced,
         SetValue,
         SetBypass,
         // AudioStopped,
@@ -539,16 +547,28 @@ namespace pipedal
             write(RingBufferCommand::ReplaceEffect, pedalboard);
         }
 
+        void EffectReplaced(Lv2Pedalboard *pedalboard)
+        {
+            write(RingBufferCommand::EffectReplaced, pedalboard);
+        }
+
+        void ReplaceRoutingInserts(Lv2RoutingInserts routingInserts)
+        {
+            write(RingBufferCommand::ReplaceRoutingInserts, routingInserts);
+        }
+
+        void RoutingInsertsReplaced(Lv2RoutingInserts routingInserts)
+        {
+            write(RingBufferCommand::ReplaceRoutingInserts, routingInserts);
+        }
+
+
         void AudioTerminatedAbnormally()
         {
             AudioStoppedBody body;
             write(RingBufferCommand::AudioTerminatedAbnormally, body);
         }
 
-        void EffectReplaced(Lv2Pedalboard *pedalboard)
-        {
-            write(RingBufferCommand::EffectReplaced, pedalboard);
-        }
 
         void FreeSnapshot(IndexedSnapshot *snapshot)
         {

src/Storage.cpp

@@ -1931,14 +1931,13 @@ pipedal::JackServerSettings Storage::GetJackServerSettings()
             result.GetAlsaInputDevice().empty() &&
             result.GetAlsaOutputDevice().empty())
         {
-            result.SetAlsaInputDevice(result.GetLegacyAlsaDevice());
-            result.SetAlsaOutputDevice(result.GetLegacyAlsaDevice());
+            std::string legacyDeviceId = result.GetLegacyAlsaDevice();
+            result.SetAlsaInputDevice(legacyDeviceId, "");
+            result.SetAlsaOutputDevice(legacyDeviceId, "");
             result.SetLegacyAlsaDevice("");
         }
+        result.FixUpDeviceNames();
     }
-#if JACK_HOST
-    result.Initialize();
-#endif
 
     return result;
 }
@@ -1952,9 +1951,6 @@ void Storage::SetJackServerSettings(const pipedal::JackServerSettings &jackConfi
         json_writer writer(f, false);
         writer.write(jackConfiguration);
     }
-#if JACK_HOST
-    jackConfiguration.Write();
-#endif
 }
 
 void Storage::SetSystemMidiBindings(const std::vector<MidiBinding> &bindings)

src/alsaCheck.cpp

@@ -206,6 +206,7 @@ static void print_device_info(snd_ctl_t* handle, int card, int device) {
         // Print basic info
         std::cout << "\n  Subdevice: " << name << " - " << device_name << std::endl;
         std::cout << "  ID: " << snd_pcm_info_get_id(pcminfo) << std::endl;
+        std::cout << "  Name: " << snd_pcm_info_get_name(pcminfo) << std::endl;
         std::cout << "  Capabilities:";
         if (has_playback) std::cout << " PLAYBACK";
         if (has_capture) std::cout << " CAPTURE";

todo.txt

@@ -1,20 +1,23 @@
-A way to force input to mono?
-Cab I/Rs: gear="ir"
+summaries for Mono audio adapaters.
+Check PWA on windows, edge and chrome.
+Make sure Pi 4 default audio device is still hidden when selecting devices!
+
+A final solution for rate-limiting on Tone3000.
+
+A way to force input to mono?
+
 
- // yyy: only if the property changed!.
 Tooltip on File Property Select: add to release notes.
 sAFEfILEnAMES: RENAME, &C. Safe bank names? 
 NEW BANK
 WINDOW SIZE CALCUALTIONS ARE WRONG ON LINUX HIDEF DISPLAYS.
 
-ls 
 Carla Project icons.
 check reload after change of LV2 plugins.
 
 Exactly one underrun per seek in Toob Player
 
 
-json "skip" code doesn't work with complex objects (MidiChannelBinding specifically).
 json nan/inf is fatal.
 
 - pipewire aux in?

vite/public/manifest.json

@@ -1,6 +1,14 @@
 {
+    "manifest_version": 3,
     "short_name": "PiPedal",
     "name": "PiPedal",
+    "author": "Robin E.R. Davies",
+    "description": "A web-based client for the PiPedal guitar effects processor.",
+    "developer": {
+        "name": "Robin E.R. Davies",
+        "url": "https://rerdavies.github.io"
+    },
+    "homepage_url": "https://rerdavies.github.io/pipedal",
     "icons": [
         {
             "src": "favicon.ico",
@@ -20,5 +28,12 @@
     ],
     "start_url": ".",
     "theme_color": "#000000",
-  "background_color": "#ffffff"
+    "display": "standalone",
+    "display_override": [
+        "fullscreen",
+        "standalone",
+        "minimal-ui",
+        "browser"
+    ],
+    "background_color": "#000000"
 }

vite/src/pipedal/AppThemed.css

@@ -50,3 +50,4 @@ input[type=number] {
 img {
     user-select: none;
 }
+

vite/src/pipedal/ChannelRouterSettings.tsx

@@ -3,9 +3,16 @@ import { Pedalboard, ControlValue } from "./Pedalboard.tsx";
 import JackConfiguration from "./Jack.tsx";
 
 
+export const NONE_CHANNEL: number = -1;
+// valid for Aux channel input only.
+export const MAIN_OUT_LEFT_CHANNEL: number = -2;
+// valid for Aux channel input only.
+export const MAIN_OUT_RIGHT_CHANNEL: number = -3;
+
+
 function isActiveChannel(channels: number[]): boolean {
     if (channels.length < 2) return false;
-    return channels[1] >= 0 || channels[0] >= 0;
+    return channels[1] !== -1 || channels[0] !== -1;
 }
 
 function chName(ch: number): string {
@@ -14,13 +21,16 @@ function chName(ch: number): string {
     }
     return "Ch" + (ch + 1);
 }
-function channelPairName(channels: number[], maxChannels: number): string {
+function channelPairName(channels: number[], maxChannels: number, input: boolean): string {
     if (channels.length !== 2) {
         return "Invalid";
     }
     if (channels[0] === -1 && channels[1] === -1) {
         return "None";
     }
+    if (maxChannels === 1) {
+        return input ? "Input": "Output";
+    }
 
     if (maxChannels === 2) {
         if (channels[0] === 0 && channels[1] === 1) {
@@ -36,13 +46,28 @@ function channelPairName(channels: number[], maxChannels: number): string {
             return "Right,Left";
         }
     }
-    return chName(channels[0]) + "," + chName(channels[1]);
+    if (channels[0] === channels[1]) {
+        return chName(channels[0]);
+    }
+    return '[' + chName(channels[0]) + " " + chName(channels[1]) + "]";
 }
 
 
+function arrayEquals(a: number[], b: number[]): boolean {
+    if (a.length !== b.length) {
+        return false;
+    }
+    for (let i = 0; i < a.length; i++) {
+        if (a[i] !== b[i]) {
+            return false;
+        }
+    }
+    return true;
+}
 
 export default class ChannelRouterSettings {
     configured: boolean = false;
+    modified: boolean = false;
     channelRouterPresetId: number = -1;
 
     mainInputChannels: number[] = [1, 1];
@@ -61,6 +86,7 @@ export default class ChannelRouterSettings {
 
     deserialize(obj: any): ChannelRouterSettings {
         this.configured = obj.configured;
+        this.modified = obj.modified;
         this.channelRouterPresetId = obj.channelRouterPresetId ? obj.channelRouterPresetId : -1;
         this.mainInputChannels = obj.mainInputChannels.slice();
         this.mainOutputChannels = obj.mainOutputChannels.slice();
@@ -73,6 +99,9 @@ export default class ChannelRouterSettings {
         this.controlValues = ControlValue.deserializeArray(obj.controlValues);
         return this;
     }
+    clone() : ChannelRouterSettings {
+        return  new ChannelRouterSettings().deserialize(this);
+    }
     getControlValue(symbol: string): number | null {
         for (let control of this.controlValues) {
             if (control.key === symbol) {
@@ -111,16 +140,21 @@ export default class ChannelRouterSettings {
         }
         let nInputs = jackConfiguration.inputAudioPorts.length;
         let nOutputs = jackConfiguration.outputAudioPorts.length;
-        let description = channelPairName(this.mainInputChannels, nInputs) + " -> " +
-            channelPairName(this.mainOutputChannels, nOutputs);
+        let description = channelPairName(this.mainInputChannels, nInputs,true) + " -> " +
+            channelPairName(this.mainOutputChannels, nOutputs,false);
         if (isActiveChannel(this.auxInputChannels) && isActiveChannel(this.auxOutputChannels)) 
         {
-            description += " " + "+ re-amp: " + channelPairName(this.auxInputChannels, nInputs) + " -> " +
-                channelPairName(this.auxOutputChannels, nOutputs);
+            if (arrayEquals(this.mainInputChannels, this.auxInputChannels))
+            {
+                description += ", re-amp -> " + channelPairName(this.auxOutputChannels,nOutputs, false);
+            } else {
+                description += " " + ", aux: " + channelPairName(this.auxInputChannels, nInputs,true) + " -> " +
+                    channelPairName(this.auxOutputChannels, nOutputs,false);
+            }
         }
         if (isActiveChannel(this.sendInputChannels) && isActiveChannel(this.sendOutputChannels)) {
-            description += " " + "+ send: " +channelPairName(this.sendOutputChannels, nOutputs)
-                + " -> " + channelPairName(this.sendInputChannels, nInputs);
+            description += " " + ", send: " +channelPairName(this.sendOutputChannels, nOutputs, false)
+                + " -> " + channelPairName(this.sendInputChannels, nInputs,true);
         }
         return description;
     }
@@ -128,6 +162,7 @@ export default class ChannelRouterSettings {
         return  jackConfiguration.isValid;
     }
 
+
     isValid(jackConfiguration: JackConfiguration): boolean {
         if (!this.configured) {
             return false;
@@ -176,5 +211,11 @@ export default class ChannelRouterSettings {
         }
         return true;
     }
+    isAuxActive() : boolean {
+        return isActiveChannel(this.auxInputChannels) && isActiveChannel(this.auxOutputChannels);
+    }
+    isSendActive() : boolean{
+        return isActiveChannel(this.sendInputChannels) && isActiveChannel(this.sendOutputChannels);
+    }
 
 }

vite/src/pipedal/ChannelRouterSettingsDialog.tsx

@@ -31,20 +31,22 @@ import MenuItem from '@mui/material/MenuItem';
 import ChannelRouterSettingsHelpDialog from './ChannelRouterSettingsHelpDialog';
 import SpeakerIcon from '@mui/icons-material/Speaker';
 import MicIcon from '@mui/icons-material/Mic';
+import SaveIconOutline from '@mui/icons-material/Save';
 
 import DialogTitle from '@mui/material/DialogTitle';
 import DialogContent from '@mui/material/DialogContent';
 import Typography from '@mui/material/Typography';
-import ChannelRouterSettings from './ChannelRouterSettings';
-import { Pedalboard, ControlValue } from './Pedalboard';
+import ChannelRouterSettings, { MAIN_OUT_LEFT_CHANNEL, MAIN_OUT_RIGHT_CHANNEL } from './ChannelRouterSettings';
+import { Pedalboard  } from './Pedalboard';
 
 import DialogEx from './DialogEx';
 
-import { PiPedalModelFactory } from './PiPedalModel';
+import  { PiPedalModel, PiPedalModelFactory } from './PiPedalModel';
+import { JackConfiguration } from './Jack';
 
 
-let debugInputChannels: number | null = 2;
-let debugOutputChannels: number | null = 4;
+let debugInputChannels: number | null = 1;
+let debugOutputChannels: number | null = 1;
 
 
 export interface ChannelRouterSettingsDialogProps {
@@ -65,27 +67,31 @@ interface ChannelRouterSettingsPreset {
 }
 
 
-let channelRouterPresets: ChannelRouterSettingsPreset[] = [
-    {
-        id: -2, name: "Left -> Left", settings: new ChannelRouterSettings().deserialize({
+let DEFAULT_MONO_TO_MONO_ROUTING_PRESET = -2; // corresponds to Input->Output.
+let DEFAULT_LEFT_TO_STEREO_ROUTING_PRESET = -3; // corresponds to Input->Stereo out.
+let DEFAULT_RIGHT_TO_STEREO_ROUTING_PRESET = -4; // corresponds to Right->Stereo out.
+
+let factoryRouterPresets: ChannelRouterSettings[] = [
+    // Input->Output
+    new ChannelRouterSettings().deserialize({
         configured: true,
         channelRouterPresetId: -2,
-            mainInputChannels: [0, 0],
-            mainOutputChannels: [0, 0],
+        mainInputChannels: [0, -1],
+        mainOutputChannels: [0, -1],
         mainInserts: new Pedalboard(),
         auxInputChannels: [-1, -1],
         auxOutputChannels: [-1, -1],
         auxInserts: new Pedalboard(),
         sendInputChannels: [-1, -1],
         sendOutputChannels: [-1, -1],
-            controlValues: [],
+        controlValues: []
     })
-    },
-    {
-        id: -3, name: "Left -> Stereo", settings: new ChannelRouterSettings().deserialize({
+    ,
+    // Input->Stereo out.
+    new ChannelRouterSettings().deserialize({
         configured: true,
         channelRouterPresetId: -3,
-            mainInputChannels: [0, 0],
+        mainInputChannels: [0, -1],
         mainOutputChannels: [0, 1],
         mainInserts: new Pedalboard(),
         auxInputChannels: [-1, -1],
@@ -93,14 +99,14 @@ let channelRouterPresets: ChannelRouterSettingsPreset[] = [
         auxInserts: new Pedalboard(),
         sendInputChannels: [-1, -1],
         sendOutputChannels: [-1, -1],
-            controlValues: [],
+        controlValues: []
     })
-    },
-    {
-        id: -4, name: "Right -> Stereo", settings: new ChannelRouterSettings().deserialize({
+    ,
+    // Right->Stereo out.
+    new ChannelRouterSettings().deserialize({
         configured: true,
         channelRouterPresetId: -4,
-            mainInputChannels: [1, 1],
+        mainInputChannels: [1,-1],
         mainOutputChannels: [0, 1],
         mainInserts: new Pedalboard(),
         auxInputChannels: [-1, -1],
@@ -110,73 +116,109 @@ let channelRouterPresets: ChannelRouterSettingsPreset[] = [
         sendOutputChannels: [-1, -1],
         controlValues: [],
     })
-    },
-    {
-        id: -5, name: "Right -> Left + re-amp", settings: new ChannelRouterSettings().deserialize({
+    ,
+    new ChannelRouterSettings().deserialize({
         configured: true,
         channelRouterPresetId: -5,
-            mainInputChannels: [1, 1],
-            mainOutputChannels: [0, 0],
+        mainInputChannels: [1,-1],
+        mainOutputChannels: [0, -1],
         mainInserts: new Pedalboard(),
-            auxInputChannels: [1, 1],
-            auxOutputChannels: [1, 1],
+        auxInputChannels: [1,-1],
+        auxOutputChannels: [1,-1],
         auxInserts: new Pedalboard(),
         sendInputChannels: [-1, -1],
         sendOutputChannels: [-1, -1],
         controlValues: [],
     })
-    },
-    {
-        id: -6, name: "Left -> Left + send", settings: new ChannelRouterSettings().deserialize({
+    ,
+    new ChannelRouterSettings().deserialize({
         configured: true,
         channelRouterPresetId: -6,
-            mainInputChannels: [0, 0],
-            mainOutputChannels: [0, 0],
+        mainInputChannels: [1,-1],
+        mainOutputChannels: [1,-1],
         mainInserts: new Pedalboard(),
-            auxInputChannels: [-1, -1],
-            auxOutputChannels: [-1, - 1],
-            auxInserts: new Pedalboard(),
-            sendInputChannels: [1, 1],
-            sendOutputChannels: [1, 1],
-            controlValues: [],
-        })
-    },
-    {
-        id: -7, name: "Right -> Right + send", settings: new ChannelRouterSettings().deserialize({
-            configured: true,
-            channelRouterPresetId: -7,
-            mainInputChannels: [1, 1],
-            mainOutputChannels: [1, 1],
-            mainInserts: new Pedalboard(),
-            auxInputChannels: [-1, -1],
-            auxOutputChannels: [-1, - 1],
-            auxInserts: new Pedalboard(),
-            sendInputChannels: [0, 0],
-            sendOutputChannels: [0, 0],
-            controlValues: [],
-        })
-    },
-    {
-        id: -8, name: "Left -> Stereo + re-amp", settings: new ChannelRouterSettings().deserialize({
-            configured: true,
-            channelRouterPresetId: -8,
-            mainInputChannels: [0, 0],
-            mainOutputChannels: [0, 1],
-            mainInserts: new Pedalboard(),
-            auxInputChannels: [0, 0],
-            auxOutputChannels: [2, 2],
+        auxInputChannels: [0, -1],
+        auxOutputChannels: [0, -1],
         auxInserts: new Pedalboard(),
         sendInputChannels: [-1, -1],
         sendOutputChannels: [-1, -1],
         controlValues: [],
-
     })
-    },
-    {
-        id: -9, name: "Left -> Stereo + stereo send", settings: new ChannelRouterSettings().deserialize({
+    ,
+    new ChannelRouterSettings().deserialize({
+        configured: true,
+        channelRouterPresetId: -7,
+        mainInputChannels: [1,-1],
+        mainOutputChannels: [0, -1],
+        mainInserts: new Pedalboard(),
+        auxInputChannels: [0, -1],
+        auxOutputChannels: [1,-1],
+        auxInserts: new Pedalboard(),
+        sendInputChannels: [-1, -1],
+        sendOutputChannels: [-1, -1],
+        controlValues: []
+    })
+    ,
+    new ChannelRouterSettings().deserialize({
+        configured: true,
+        channelRouterPresetId: -8,
+        mainInputChannels: [0, -1],
+        mainOutputChannels: [0, -1],
+        mainInserts: new Pedalboard(),
+        auxInputChannels: [1,-1],
+        auxOutputChannels: [1,-1],
+        auxInserts: new Pedalboard(),
+        sendInputChannels: [-1, -1],
+        sendOutputChannels: [-1, -1],
+        controlValues: []
+    })
+    ,
+    new ChannelRouterSettings().deserialize({
         configured: true,
         channelRouterPresetId: -9,
-            mainInputChannels: [0, 0],
+        mainInputChannels: [0, -1],
+        mainOutputChannels: [0, -1],
+        mainInserts: new Pedalboard(),
+        auxInputChannels: [-1, -1],
+        auxOutputChannels: [-1, -1],
+        auxInserts: new Pedalboard(),
+        sendInputChannels: [1,-1],
+        sendOutputChannels: [1,-1],
+        controlValues: []
+    })
+    ,
+    new ChannelRouterSettings().deserialize({
+        configured: true,
+        channelRouterPresetId: -10,
+        mainInputChannels: [1,-1],
+        mainOutputChannels: [1,-1],
+        mainInserts: new Pedalboard(),
+        auxInputChannels: [-1, -1],
+        auxOutputChannels: [-1, -1],
+        auxInserts: new Pedalboard(),
+        sendInputChannels: [0, -1],
+        sendOutputChannels: [0, -1],
+        controlValues: []
+    })
+    ,
+    new ChannelRouterSettings().deserialize({
+        configured: true,
+        channelRouterPresetId: -11,
+        mainInputChannels: [0, -1],
+        mainOutputChannels: [0, 1],
+        mainInserts: new Pedalboard(),
+        auxInputChannels: [0, -1],
+        auxOutputChannels: [2, -1],
+        auxInserts: new Pedalboard(),
+        sendInputChannels: [-1, -1],
+        sendOutputChannels: [-1, -1],
+        controlValues: []
+    })
+    ,
+    new ChannelRouterSettings().deserialize({
+        configured: true,
+        channelRouterPresetId: -12,
+        mainInputChannels: [0, -1],
         mainOutputChannels: [0, 1],
         mainInserts: new Pedalboard(),
         auxInputChannels: [-1, -1],
@@ -184,10 +226,9 @@ let channelRouterPresets: ChannelRouterSettingsPreset[] = [
         auxInserts: new Pedalboard(),
         sendInputChannels: [2, 3],
         sendOutputChannels: [2, 3],
-            controlValues: [],
-
+        controlValues: []
     })
-    },
+    ,
 ];
 
 let cellPortraitInOutDiv: React.CSSProperties = {
@@ -248,41 +289,132 @@ let cellPortraitInOut: React.CSSProperties = {
     verticalAlign: "middle"
 };
 
-function MakeChannelMenu(channelCount: number): React.ReactElement[] {
+
+function normalizeChannelSelection(channelSelection: number[]) {
+    if (channelSelection.length === 2) {
+        if (channelSelection[0] === -1) {
+            channelSelection[0] = channelSelection[1];
+            channelSelection[1] = -1;
+        } else {
+            if (channelSelection[0] === channelSelection[1]) {
+                channelSelection[1] = -1;
+            }
+        }
+    }
+}
+function makeRoutingPresets(audioConfig: JackConfiguration): ChannelRouterSettingsPreset[] {
+    let result: ChannelRouterSettingsPreset[] = [];
+
+    for (let preset of factoryRouterPresets) {
+        if (preset.isValid(audioConfig)) {
+            normalizeChannelSelection(preset.mainInputChannels);
+            normalizeChannelSelection(preset.mainOutputChannels);
+            normalizeChannelSelection(preset.auxInputChannels);
+            normalizeChannelSelection(preset.auxOutputChannels);
+            normalizeChannelSelection(preset.sendInputChannels);
+            normalizeChannelSelection(preset.sendOutputChannels);
+            let newPreset = {
+                id: preset.channelRouterPresetId,
+                name: preset.getDescription(audioConfig),
+                settings: preset
+            };
+            result.push(newPreset);
+        }
+    }
+
+
+    return result;
+}
+
+function MakeChannelMenu(channelCount: number, routeType: RouteType, input: boolean, disallowedSelections: number[]): React.ReactElement[] {
     let items: React.ReactElement[] = [(<MenuItem key={-1} value={-1}>None</MenuItem>)]
     if (channelCount === 0) {
         return items;
     }
-    if (channelCount === 2) {
-        items.push((<MenuItem key={0} value={0}>Left</MenuItem>));
-        items.push((<MenuItem key={1} value={1}>Right</MenuItem>));
-        return items;
+    if (channelCount === 1) {
+        if (input) {
+            items.push((<MenuItem key={0} value={0} disabled={disallowedSelections.includes(0)}>Input</MenuItem>));
+        } else {
+            items.push((<MenuItem key={0} value={0} disabled={disallowedSelections.includes(0)}>Output</MenuItem>));
         }
+    } else if (channelCount === 2) {
+        items.push((<MenuItem key={0} value={0} disabled={disallowedSelections.includes(0)}>Left</MenuItem>));
+        items.push((<MenuItem key={1} value={1} disabled={disallowedSelections.includes(1)}>Right</MenuItem>));
+        return items;
+    } else {
         for (let i = 0; i < channelCount; ++i) {
-        items.push((<MenuItem key={i} value={i}>Ch {i + 1}</MenuItem>));
+            items.push((<MenuItem key={i} value={i} disabled={disallowedSelections.includes(i)}>Ch {i + 1}</MenuItem>));
+        }
+    }
+    if (routeType === RouteType.Aux && input) {
+        items.push((<MenuItem key={MAIN_OUT_LEFT_CHANNEL} value={MAIN_OUT_LEFT_CHANNEL} >Main Out L</MenuItem>));
+        items.push((<MenuItem key={MAIN_OUT_RIGHT_CHANNEL} value={MAIN_OUT_RIGHT_CHANNEL} >Main Out R</MenuItem>));
+
     }
     return items;
 }
 
 
+function makeDebugConfig(baseConfig: JackConfiguration): JackConfiguration {
+    let config = new JackConfiguration().deserialize(baseConfig); // clone.
+    for (let i = config.inputAudioPorts.length; i < (debugInputChannels ?? 0); ++i) {
+        config.inputAudioPorts.push("ch" + (i + 1));
+    }
+    if (config.inputAudioPorts.length > (debugInputChannels ?? 0)) {
+        config.inputAudioPorts = config.inputAudioPorts.slice(0, debugInputChannels ?? 0);
+    }
+    for (let i = config.outputAudioPorts.length; i < (debugOutputChannels ?? 0); ++i) {
+        config.outputAudioPorts.push("ch" + (i + 1));
+    }
+    if (config.outputAudioPorts.length > (debugOutputChannels ?? 0)) {
+        config.outputAudioPorts = config.outputAudioPorts.slice(0, debugOutputChannels ?? 0);
+    }
+    return config;
+}
+
+function getChannelRouterSettingsPresetById(presetId: number): ChannelRouterSettings {
+    for (let preset of factoryRouterPresets) {
+        if (preset.channelRouterPresetId === presetId) {
+         return preset.clone();
+        }
+    }
+    throw new Error("Error setting defaults. Preset not found: " + presetId);   
+}
+
+function GetDefaultChannelRouterSettings(model: PiPedalModel) : ChannelRouterSettings {
+    let currentSettings = model.channelRouterSettings.get();
+    if (currentSettings.configured) {
+        return currentSettings;
+    }
+    // we're onboarding the user, so set an appropriate default channel routing preset based on the number of ports on the audio interface.
+
+    let jackSettings = model.jackConfiguration.get();
+    let numInputs = jackSettings.inputAudioPorts.length;
+    let numOutputs = jackSettings.outputAudioPorts.length;
+    if (numInputs < 2 || numOutputs < 2) {
+        currentSettings = getChannelRouterSettingsPresetById(DEFAULT_MONO_TO_MONO_ROUTING_PRESET);
+    } else if (numInputs === 2 && numOutputs === 2) {
+        currentSettings =  getChannelRouterSettingsPresetById(DEFAULT_RIGHT_TO_STEREO_ROUTING_PRESET);
+    } else {
+        currentSettings = getChannelRouterSettingsPresetById(DEFAULT_LEFT_TO_STEREO_ROUTING_PRESET);
+    }
+    model.setChannelRouterSettings(currentSettings);
+    return model.channelRouterSettings.get();
+}
 
 function ChannelRouterSettingsDialog(props: ChannelRouterSettingsDialogProps) {
     //const classes = useStyles();
     const { open, onClose } = props;
     let model = PiPedalModelFactory.getInstance();
     let config = model.jackConfiguration.get();
+    if (debugInputChannels != null || debugOutputChannels != null) {
+        config = makeDebugConfig(config);
+    }
+    let channelRouterPresets = makeRoutingPresets(config);
 
-
-    const [settings, setSettings] = useState<ChannelRouterSettings>(model.channelRouterSettings.get());
-    const [controlValues, setControlValues] = useState<ControlValue[]>(model.channelRouterControlValues.get());
+    const [settings, setSettings] = useState<ChannelRouterSettings>(GetDefaultChannelRouterSettings(model));
     const [showHelp, setShowHelp] = useState<boolean>(false);
 
-    if (settings) {
-    }
-    if (controlValues) {
-
-    }
-
 
     React.useEffect(() => {
         if (open) {
@@ -290,13 +422,8 @@ function ChannelRouterSettingsDialog(props: ChannelRouterSettingsDialogProps) {
                 setSettings(model.channelRouterSettings.get());
             };
             model.channelRouterSettings.addOnChangedHandler(handleSettingsChanged);
-            let handleControlsChanged = () => {
-                setControlValues(model.channelRouterControlValues.get());
-            };
-            model.channelRouterControlValues.addOnChangedHandler(handleControlsChanged);
             return () => {
                 model.channelRouterSettings.removeOnChangedHandler(handleSettingsChanged);
-                model.channelRouterControlValues.removeOnChangedHandler(handleControlsChanged);
             }
         } else {
             return () => { };
@@ -321,28 +448,50 @@ function ChannelRouterSettingsDialog(props: ChannelRouterSettingsDialogProps) {
 
         let value: number;
 
+        let disallowedSelections: number[] = [];
+
+        let channelSelection: number[] = [];
         switch (routeType) {
             case RouteType.Main:
-                value = input ? settings.mainInputChannels[channelIndex] : settings.mainOutputChannels[channelIndex];
+                channelSelection = input ? settings.mainInputChannels : settings.mainOutputChannels;
                 break;
             case RouteType.Aux:
-                value = input ? settings.auxInputChannels[channelIndex] : settings.auxOutputChannels[channelIndex];
+                channelSelection = input ? settings.auxInputChannels : settings.auxOutputChannels;
                 break;
             case RouteType.Send:
-                value = input ? settings.sendInputChannels[channelIndex] : settings.sendOutputChannels[channelIndex];
+                channelSelection = input ? settings.sendInputChannels : settings.sendOutputChannels;
                 break;
         }
+        value = channelSelection[channelIndex];
+
         if (value >= channelCount) {
             value = -1;
         }
+        if (routeType === RouteType.Send) {
+            if (input) {
+                disallowedSelections = settings.mainInputChannels.concat(settings.auxInputChannels);
+            } else {
+                disallowedSelections = settings.mainOutputChannels.concat(settings.auxOutputChannels);
+            }
+        }
+        if (channelIndex === 1) {
+            if (channelSelection[0] !== -1) {
+                disallowedSelections.push(channelSelection[0]);
+            }
+        }
+        let error = false;
+        if (routeType === RouteType.Main && channelSelection[0] === -1 && channelSelection[1] === -1) {
+            error = true;
+        }
         return (
-            <Select variant="standard" style={{ width: 90 }} value={value}
+            <Select variant="standard" style={{ width: icon ? 130 : 110 }} value={value}
                 startAdornment={
                     icon ? (
                         input ? (<MicIcon style={{ opacity: 0.6, width: 16, height: 16, marginRight: 4 }} />) :
                             (<SpeakerIcon style={{ opacity: 0.6, width: 16, height: 16, marginRight: 4 }} />)
                     ) : undefined
                 }
+                error={error}
                 onChange={(event) => {
                     let newValue = event.target.value as number;
                     let newSettings = new ChannelRouterSettings().deserialize(settings);
@@ -350,32 +499,43 @@ function ChannelRouterSettingsDialog(props: ChannelRouterSettingsDialogProps) {
                         case RouteType.Main:
                             if (input) {
                                 newSettings.mainInputChannels[channelIndex] = newValue;
+                                normalizeChannelSelection(newSettings.mainInputChannels);
                             } else {
                                 newSettings.mainOutputChannels[channelIndex] = newValue;
+                                normalizeChannelSelection(newSettings.mainOutputChannels);
                             }
                             break;
                         case RouteType.Aux:
                             if (input) {
                                 newSettings.auxInputChannels[channelIndex] = newValue;
+                                normalizeChannelSelection(newSettings.auxInputChannels);
                             } else {
                                 newSettings.auxOutputChannels[channelIndex] = newValue;
+                                normalizeChannelSelection(newSettings.auxOutputChannels);
                             }
                             break;
                         case RouteType.Send:
                             if (input) {
                                 newSettings.sendInputChannels[channelIndex] = newValue;
+                                normalizeChannelSelection(newSettings.sendInputChannels);
 
                             } else {
                                 newSettings.sendOutputChannels[channelIndex] = newValue;
+                                normalizeChannelSelection(newSettings.sendOutputChannels);
                             }
                             break;
                     }
+                    if  (newSettings.channelRouterPresetId >= 0) {
+                        newSettings.modified = true; // custom.
+                    } else {
+                        newSettings.modified = true;
                         newSettings.channelRouterPresetId = -1; // custom.
+                    }
                     newSettings.configured = true;
                     model.setChannelRouterSettings(newSettings);
                 }}
             >
-                {MakeChannelMenu(channelCount)}
+                {MakeChannelMenu(channelCount, routeType, input, disallowedSelections)}
             </Select>
         )
     }
@@ -437,18 +597,32 @@ function ChannelRouterSettingsDialog(props: ChannelRouterSettingsDialogProps) {
 
         return items;
     }
+    let handleSave = () => {
+
+    };
 
     let PresetSelect = (width: number | string | undefined) => {
         return (
             <div style={{ display: "flex", flexDirection: "row", marginTop: 2, alignItems: "center" }}>
-                <Select variant="standard" style={{ width: width }} value={settings.channelRouterPresetId}
+                <div style={{ flex: "0 0 auto" }}>
+                    <IconButtonEx tooltip="Save current preset"
+                        style={{ flex: "0 0 auto", color: "#FFFFFF" }}
+                        onClick={(e) => { handleSave(); }}
+                        size="large">
+                        <SaveIconOutline style={{ opacity: 0.75 }} color="inherit" />
+                    </IconButtonEx>
+                </div>
+
+                <div style={{ flex: "1 1", display: "relative" }}>
+                    <Select variant="standard" style={{ width: "100%" }} value={settings.channelRouterPresetId}
                         onChange={(event) => {
                             ApplyPresetId(event.target.value);
                         }}
                     >
                         {GeneratePresetMenuItems()}
                     </Select>
-                <IconButtonEx tooltip="Presets" aria-label="more-presets">
+                </div>
+                <IconButtonEx tooltip="Presets" aria-label="more-presets" style={{ marginRight: 24 }}>
                     <MoreVertIcon style={{ opacity: 0.6 }} onClick={() => { }} />
                 </IconButtonEx>
             </div>
@@ -457,6 +631,7 @@ function ChannelRouterSettingsDialog(props: ChannelRouterSettingsDialogProps) {
 
 
     let LandscapeView = () => {
+        let auxInsertDisabled = !settings.isAuxActive();
         return (
             <div style={{
                 display: "flex", flexFlow: "row", alignItems: "center", justifyContent: "center",
@@ -518,7 +693,11 @@ function ChannelRouterSettingsDialog(props: ChannelRouterSettingsDialogProps) {
                             </td>
                             <td rowSpan={2} style={cellLeft}>{Vu()}</td>
                             <td rowSpan={2} style={cellLeft}>
-                                <Button variant="outlined" style={{ textTransform: "none", borderRadius: 24 }}>
+                                <Button variant="outlined" style={{
+                                    textTransform: "none", borderRadius: 24,
+
+                                }}
+                                    disabled={auxInsertDisabled}>
                                     Inserts
                                 </Button>
                             </td>
@@ -574,6 +753,7 @@ function ChannelRouterSettingsDialog(props: ChannelRouterSettingsDialogProps) {
         );
     };
     let PortraitView = () => {
+        let auxInsertDisabled = !settings.isAuxActive();
         return (
             <div style={{
                 display: "flex", flexFlow: "row", alignItems: "center", justifyContent: "center",
@@ -685,7 +865,11 @@ function ChannelRouterSettingsDialog(props: ChannelRouterSettingsDialogProps) {
                                             <td style={cellPortraitControlStrip}>{Vu()}</td>
                                             <td style={cellPortraitControlStrip}>
                                                 <div style={{ marginLeft: 8, marginRight: 8 }}>
-                                                    <Button variant="outlined" style={{ textTransform: "none", borderRadius: 24 }}>
+                                                    <Button variant="outlined" style={{
+                                                        textTransform: "none", borderRadius: 24,
+
+                                                    }}
+                                                        disabled={auxInsertDisabled}>
                                                         Inserts
                                                     </Button>
                                                 </div>

vite/src/pipedal/ChannelRouterSettingsHelpDialog.tsx

@@ -105,15 +105,15 @@ export default class ChannelRouterSettingsHelpDialog extends ResizeResponsiveCom
 
                 <DialogContent style={{ minHeight: 96 }}>
                     <div style={{ fontSize: "0.9em", lineHeight: "18pt" }}>
-                        <p> The Mixer Routing Dialog determines how audio signals are processed and routed between input and output audio channels.
+                        <p> The Audio Channel Routing Dialog determines how audio signals are processed and routed between input and output audio channels.
                         </p>
-                        <p>Guitar effects processing occurs on the <i>Main</i> route only. Plugins in the main PiPedal window are
+                        <p>By default, guitar effects processing occurs on the <i>Main</i> route only. Plugins in the main PiPedal window are
                             applied before any insert plugins that have been added to the <i>Main</i> route. Main insert plugins are
                             applied globally, regardless of the selected preset or effects in the main PiPedal window. You might
                             want to add an EQ or reverb plugin here, to allow your presets to be globally adjusted to suit the room
                             in which you are currently performing.
                         </p>
-                        <p>Plugins in the main PiPedal window are not applied to the <i>Aux</i> route. The Aux route is intended to be
+                        <p>Plugins in the main PiPedal window are not applied to the <i>Aux</i> route by default. The Aux route is intended to be
                             used for
                         </p>
                         <ul>
@@ -128,7 +128,13 @@ export default class ChannelRouterSettingsHelpDialog extends ResizeResponsiveCom
                                 mixing it with the processed guitar signal, or passing it out on a dedicated output channel.
                             </li>
                         </ul>
-                        <p>although you may find other creative uses for the Aux channel as well.</p>
+                        <p>However, if "Main Out L" or "Main Out R" is selected as an Aux input channel, then the Aux route will receive the 
+                            output of the processed Main route. Main route insrts are not applied
+                            to the Aux route input signal, so you can have an independent set of inserts applied to the Main and Aux output signals. 
+                            An example of how one might use this feature: sending the output of the Main route to 
+                            a soundboard or PA system without reverb or EQ applied; and then applying reverb and EQ only to the Aux route whose 
+                            outputs will be used as inputs to a stage monitor or headphones for the performer.
+                        </p>
                         <p>If the Main and Aux routes share output channels, then the results of the Main and Output signals are
                             summed together on those output channels. For stereo mixing, assign the same left and  right output
                             channels to both the Main and Aux routes. If you have a 2x4 or 4x4 audio interface with two guitar input channels
@@ -142,7 +148,8 @@ export default class ChannelRouterSettingsHelpDialog extends ResizeResponsiveCom
                             TooB Send plugin will be sent to the external hardware effect, and the output the external hardware 
                             effect will be returned to PiPedal at the output of the TooB Send plugin. PiPedal currently supports 
                             only one Send plugin instance per preset; and the Send and Return channels may not be shared with the Main 
-                            or Aux routes.
+                            or Aux routes. Note that you may only use one instance of the TooB Send plugin per preset. The TooB Send plugin 
+                            may not be used as a Main or Aux insert effect.
                         </p>
                     </div>
 

vite/src/pipedal/JackServerSettings.tsx

@@ -27,6 +27,8 @@ export default class JackServerSettings {
         this.rebootRequired = input.rebootRequired;
         this.alsaInputDevice = input.alsaInputDevice ?? "";
         this.alsaOutputDevice = input.alsaOutputDevice ?? "";
+        this.alsaInputDeviceName = input.alsaInputDeviceName ?? this.alsaInputDevice;
+        this.alsaOutputDeviceName = input.alsaOutputDeviceName ?? this.alsaOutputDevice;
         this.sampleRate = input.sampleRate;
         this.bufferSize = input.bufferSize;
         this.numberOfBuffers = input.numberOfBuffers;
@@ -50,6 +52,8 @@ export default class JackServerSettings {
     isJackAudio = false;
     alsaInputDevice: string = "";
     alsaOutputDevice: string = "";
+    alsaInputDeviceName: string = "";
+    alsaOutputDeviceName: string = "";
     sampleRate = 48000;
     bufferSize = 64;
     numberOfBuffers = 3;
@@ -74,19 +78,12 @@ export default class JackServerSettings {
             return "Not selected";
         }
 
-        let inDev = this.alsaInputDevice.startsWith("hw:")
-            ? this.alsaInputDevice.substring(3)
-            : this.alsaInputDevice;
-        let outDev = this.alsaOutputDevice.startsWith("hw:")
-            ? this.alsaOutputDevice.substring(3)
-            : this.alsaOutputDevice;
-
         let device: string;
-        if (inDev === outDev) {
-            device =  inDev;
-
-        } else {
-            device = inDev + "-> " + outDev;
+        if (this.alsaInputDevice === this.alsaOutputDevice) {
+            device = this.alsaInputDeviceName;;
+        }
+        else {
+            device = this.alsaInputDeviceName + " -> " + this.alsaOutputDeviceName;
         }
         return `${device} ${this.sampleRate} ${this.bufferSize}x${this.numberOfBuffers}`;
     }

vite/src/pipedal/JackServerSettingsDialog.tsx

@@ -580,10 +580,20 @@ const JackServerSettingsDialog = withStyles(
             this.setState({ suppressDeviceWarning: checked });
             localStorage.setItem("suppressSeparateDeviceWarning", checked ? "1" : "0");
         }
+        getDeviceName(deviceId: string): string {
+            if (!this.state.alsaDevices) return deviceId;
+            for (let i = 0; i < this.state.alsaDevices.length; ++i) {
+                if (this.state.alsaDevices[i].id === deviceId) {
+                    return this.state.alsaDevices[i].name;
+                }
+            }
+            return deviceId;
+        }
         handleInputDeviceChanged(e: any) {
             const d = e.target.value as string;
             let s = this.state.jackServerSettings.clone();
             s.alsaInputDevice = d;
+            s.alsaInputDeviceName = this.getDeviceName(d);
             s.valid = false;
             let settings = this.applyAlsaDevices(s, this.state.alsaDevices);
             this.setState({
@@ -597,6 +607,7 @@ const JackServerSettingsDialog = withStyles(
             const d = e.target.value as string;
             let s = this.state.jackServerSettings.clone();
             s.alsaOutputDevice = d;
+            s.alsaOutputDeviceName = this.getDeviceName(d);
             s.valid = false;
             let settings = this.applyAlsaDevices(s, this.state.alsaDevices);
             this.setState({