add device select to audio settings

src/audio/AL/ALAudio.cpp

@@ -79,6 +79,13 @@ ALInputDevice::ALInputDevice(
       channels(channels),
       bitsPerSample(bitsPerSample),
       sampleRate(sampleRate) {
+    const ALCchar* deviceName = alcGetString(device, ALC_CAPTURE_DEVICE_SPECIFIER);
+
+    if (deviceName) {
+        deviceSpecifier = std::string(deviceName);
+    } else {
+        logger.warning() << "could not retrieve input device specifier";
+    }
 }
 
 ALInputDevice::~ALInputDevice() {
@@ -108,6 +115,10 @@ uint ALInputDevice::getBitsPerSample() const {
     return bitsPerSample;
 }
 
+const std::string& ALInputDevice::getDeviceSpecifier() const {
+    return deviceSpecifier;
+}
+
 size_t ALInputDevice::read(char* buffer, size_t bufferSize) {
     ALCint samplesCount = 0;
     alcGetIntegerv(device, ALC_CAPTURE_SAMPLES, sizeof(samplesCount), &samplesCount);

src/audio/AL/ALAudio.hpp

@@ -104,6 +104,7 @@ namespace audio {
         uint getChannels() const override;
         uint getSampleRate() const override;
         uint getBitsPerSample() const override;
+        const std::string& getDeviceSpecifier() const override;
 
         size_t read(char* buffer, size_t bufferSize) override;
     private:
@@ -112,6 +113,7 @@ namespace audio {
         uint channels;
         uint bitsPerSample;
         uint sampleRate;
+        std::string deviceSpecifier;
     };
 
     /// @brief AL source adapter

src/audio/audio.hpp

@@ -127,7 +127,12 @@ namespace audio {
         /// @return 8 or 16
         virtual uint getBitsPerSample() const = 0;
 
+        /// @brief Read available data to buffer.
+        /// @return size of data received or PCMStream::ERROR in case of error
         virtual size_t read(char* buffer, size_t bufferSize) = 0;
+
+        /// @brief Get device specifier string
+        virtual const std::string& getDeviceSpecifier() const = 0;
     };
 
     /// @brief audio::PCMStream is a data source for audio::Stream

src/logic/scripting/lua/libs/libaudio.cpp

@@ -441,7 +441,9 @@ static int l_audio_get_input_info(lua::State* L) {
     if (device == nullptr) {
         return 0;
     }
-    lua::createtable(L, 0, 3);
+    lua::createtable(L, 0, 4);
+    lua::pushlstring(L, device->getDeviceSpecifier());
+    lua::setfield(L, "device_specifier");
     lua::pushinteger(L, device->getChannels());
     lua::setfield(L, "channels");
     lua::pushinteger(L, device->getSampleRate());