Add microphone combobox using SDL (#1709)

src/frontend/qt_sdl/AudioInOut.cpp

@@ -133,7 +133,12 @@ void MicOpen()
     whatIwant.channels = 1;
     whatIwant.samples = 1024;
     whatIwant.callback = MicCallback;
-    micDevice = SDL_OpenAudioDevice(NULL, 1, &whatIwant, &whatIget, 0);
+    const char* mic = NULL;
+    if (Config::MicDevice != "")
+    {
+        mic = Config::MicDevice.c_str();
+    }
+    micDevice = SDL_OpenAudioDevice(mic, 1, &whatIwant, &whatIget, 0);
     if (!micDevice)
     {
         Platform::Log(Platform::LogLevel::Error, "Mic init failed: %s\n", SDL_GetError());

src/frontend/qt_sdl/AudioSettingsDialog.cpp

@@ -17,6 +17,7 @@
 */
 
 #include <stdio.h>
+#include <SDL2/SDL.h>
 #include <QFileDialog>
 
 #include "types.h"
@@ -70,6 +71,20 @@ AudioSettingsDialog::AudioSettingsDialog(QWidget* parent, bool emuActive) : QDia
     {
         ui->chkSyncDSiVolume->setEnabled(false);
     }
+    bool isext = (Config::MicInputType == 1);
+    ui->cbMic->setEnabled(isext);
+
+    const int count = SDL_GetNumAudioDevices(true);
+    for (int i = 0; i < count; i++)
+    {
+        ui->cbMic->addItem(SDL_GetAudioDeviceName(i, true));   
+    }
+    if (Config::MicDevice == "" && count > 0)
+    {   
+        Config::MicDevice = SDL_GetAudioDeviceName(0, true);
+    }
+
+    ui->cbMic->setCurrentText(QString::fromStdString(Config::MicDevice));  
     
     grpMicMode = new QButtonGroup(this);
     grpMicMode->addButton(ui->rbMicNone,     micInputType_Silence);
@@ -95,6 +110,7 @@ AudioSettingsDialog::AudioSettingsDialog(QWidget* parent, bool emuActive) : QDia
             btn->setEnabled(false);
         ui->txtMicWavPath->setEnabled(false);
         ui->btnMicWavBrowse->setEnabled(false);
+        ui->cbMic->setEnabled(false);
     }
     else
         ui->lblInstanceNum->hide();
@@ -123,6 +139,7 @@ void AudioSettingsDialog::onConsoleReset()
 
 void AudioSettingsDialog::on_AudioSettingsDialog_accepted()
 {
+    Config::MicDevice = ui->cbMic->currentText().toStdString();
     Config::MicInputType = grpMicMode->checkedId();
     Config::MicWavPath = ui->txtMicWavPath->text().toStdString();
     Config::Save();
@@ -197,8 +214,10 @@ void AudioSettingsDialog::on_chkSyncDSiVolume_clicked(bool checked)
 void AudioSettingsDialog::onChangeMicMode(int mode)
 {
     bool iswav = (mode == 3);
+    bool isext = (mode == 1);
     ui->txtMicWavPath->setEnabled(iswav);
     ui->btnMicWavBrowse->setEnabled(iswav);
+    ui->cbMic->setEnabled(isext);
 }
 
 void AudioSettingsDialog::on_btnMicWavBrowse_clicked()

src/frontend/qt_sdl/AudioSettingsDialog.ui

@@ -136,7 +136,7 @@
         </property>
        </widget>
       </item>
-      <item row="1" column="0" colspan="3">
+      <item row="1" column="0">
        <widget class="QRadioButton" name="rbMicExternal">
         <property name="whatsThis">
          <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;Input from an external microphone, if available, will be forwarded to the emulated microphone.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
@@ -146,6 +146,13 @@
         </property>
        </widget>
       </item>
+      <item row="1" column="1" colspan="2">
+        <widget class="QComboBox" name="cbMic">
+         <property name="whatsThis"> 
+          <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;The selected microphone to be used.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>       
+         </property>
+        </widget>
+      </item>
       <item row="2" column="0" colspan="3">
        <widget class="QRadioButton" name="rbMicNoise">
         <property name="whatsThis">

src/frontend/qt_sdl/Config.cpp

@@ -120,6 +120,7 @@ int AudioBitDepth;
 int AudioVolume;
 bool DSiVolumeSync;
 int MicInputType;
+std::string MicDevice;
 std::string MicWavPath;
 
 std::string LastROMFolder;
@@ -300,6 +301,7 @@ ConfigEntry ConfigFile[] =
     {"AudioVolume", 0, &AudioVolume, 256, true},
     {"DSiVolumeSync", 0, &DSiVolumeSync, 0, true},
     {"MicInputType", 0, &MicInputType, 1, false},
+    {"MicDevice", 2, &MicDevice, (std::string)"", false},
     {"MicWavPath", 2, &MicWavPath, (std::string)"", false},
 
     {"LastROMFolder", 2, &LastROMFolder, (std::string)"", true},

src/frontend/qt_sdl/Config.h

@@ -177,6 +177,7 @@ extern int AudioBitDepth;
 extern int AudioVolume;
 extern bool DSiVolumeSync;
 extern int MicInputType;
+extern std::string MicDevice;
 extern std::string MicWavPath;
 
 extern std::string LastROMFolder;