ASIO backend, part 8

add control panel button
last commit unless it doesn't work somewhere

src/audio/abstract.cpp

@@ -45,6 +45,10 @@ void TAAudio::acceptDeviceStatus() {
   deviceStatus=TA_AUDIO_DEVICE_OK;
 }
 
+int TAAudio::specialCommand(TAAudioCommand which) {
+  return -1;
+}
+
 bool TAAudio::quit() {
   return true;
 }

src/audio/asio.cpp

@@ -319,6 +319,16 @@ void* TAAudioASIO::getContext() {
   return (void*)&driverInfo;
 }
 
+int TAAudioASIO::specialCommand(TAAudioCommand which) {
+  switch (which) {
+    case TA_AUDIO_CMD_SETUP:
+      if (ASIOControlPanel()==ASE_NotPresent) return 0;
+      return 1;
+      break;
+  }
+  return -1;
+}
+
 bool TAAudioASIO::quit() {
   if (!initialized) return false;
 

src/audio/asio.h

@@ -47,6 +47,7 @@ class TAAudioASIO: public TAAudio {
     String getFormatName(ASIOSampleType which);
 
     void* getContext();
+    int specialCommand(TAAudioCommand which);
     bool quit();
     bool setRun(bool run);
     bool init(TAAudioDesc& request, TAAudioDesc& response);

src/audio/taAudio.h

@@ -45,6 +45,11 @@ enum TAAudioDeviceStatus {
   TA_AUDIO_DEVICE_REMOVED
 };
 
+enum TAAudioCommand {
+  // open control panel for audio device
+  TA_AUDIO_CMD_SETUP=0
+};
+
 enum TAAudioFormat {
   TA_AUDIO_FORMAT_F32=0,
   TA_AUDIO_FORMAT_F64,
@@ -184,6 +189,7 @@ class TAAudio {
     void setCallback(void (*callback)(void*,float**,float**,int,int,unsigned int), void* user);
 
     virtual void* getContext();
+    virtual int specialCommand(TAAudioCommand which);
     virtual bool quit();
     virtual bool setRun(bool run);
     virtual std::vector<String> listAudioDevices();

src/engine/engine.cpp

@@ -3808,6 +3808,11 @@ void DivEngine::acceptAudioDeviceStatus() {
   output->acceptDeviceStatus();
 }
 
+int DivEngine::audioBackendCommand(TAAudioCommand which) {
+  if (output==NULL) return -1;
+  return output->specialCommand(which);
+}
+
 std::vector<String>& DivEngine::getAudioDevices() {
   return audioDevs;
 }

src/engine/engine.h

@@ -1409,6 +1409,9 @@ class DivEngine {
     // acknowledge an audio device status change
     void acceptAudioDeviceStatus();
 
+    // send command to audio backend
+    int audioBackendCommand(TAAudioCommand which);
+
     // init dispatch
     void initDispatch(bool isRender=false);
 

src/gui/settings.cpp

@@ -1347,6 +1347,15 @@ void FurnaceGUI::drawSettings() {
             }
           }
 
+          if (settings.audioEngine==DIV_AUDIO_ASIO) {
+            ImGui::SameLine();
+            if (ImGui::Button(_("Control panel"))) {
+              if (e->audioBackendCommand(TA_AUDIO_CMD_SETUP)!=2) {
+                showError(_("this driver doesn't have a control panel."));
+              }
+            }
+          }
+
           ImGui::TableNextRow();
           ImGui::TableNextColumn();
           ImGui::AlignTextToFramePadding();