add audio::InputDevice

src/audio/audio.hpp

@@ -108,6 +108,20 @@ namespace audio {
         }
     };
 
+    class InputDevice {
+    public:
+        virtual ~InputDevice() {};
+
+        virtual void startCapture() = 0;
+        virtual void stopCapture() = 0;
+
+        /// @brief Get number of audio channels
+        /// @return 1 if mono, 2 if stereo
+        virtual uint getChannels() const = 0;
+
+        virtual size_t read(char* buffer, size_t bufferSize) = 0;
+    };
+
     /// @brief audio::PCMStream is a data source for audio::Stream
     class PCMStream {
     public:
@@ -345,6 +359,9 @@ namespace audio {
         virtual std::unique_ptr<Stream> openStream(
             std::shared_ptr<PCMStream> stream, bool keepSource
         ) = 0;
+        virtual std::unique_ptr<InputDevice> openInputDevice(
+            uint sampleRate, uint channels, uint bitsPerSample
+        ) = 0;
         virtual void setListener(
             glm::vec3 position,
             glm::vec3 velocity,