Experimental microphone support.

servers/audio/audio_stream.h

@@ -94,6 +94,66 @@ public:
 	virtual float get_length() const = 0; //if supported, otherwise return 0
 };
 
+// Microphone
+
+class AudioStreamPlaybackMicrophone;
+
+class AudioStreamMicrophone : public AudioStream {
+
+	GDCLASS(AudioStreamMicrophone, AudioStream)
+	friend class AudioStreamPlaybackMicrophone;
+
+	Set<AudioStreamPlaybackMicrophone *> playbacks;
+	StringName microphone_name;
+
+protected:
+	static void _bind_methods();
+
+public:
+	virtual Ref<AudioStreamPlayback> instance_playback();
+	virtual String get_stream_name() const;
+
+	void set_microphone_name(const String &p_name);
+	StringName get_microphone_name() const;
+
+	virtual float get_length() const; //if supported, otherwise return 0
+
+	AudioStreamMicrophone();
+};
+
+class AudioStreamPlaybackMicrophone : public AudioStreamPlaybackResampled {
+
+	GDCLASS(AudioStreamPlaybackMicrophone, AudioStreamPlayback)
+	friend class AudioStreamMicrophone;
+
+	bool active;
+	uint64_t internal_mic_offset;
+
+	Ref<AudioStreamMicrophone> microphone;
+	AudioDriver::MicrophoneReciever *reciever;
+
+protected:
+	virtual void _mix_internal(AudioFrame *p_buffer, int p_frames);
+	virtual float get_stream_sampling_rate();
+
+public:
+	virtual void mix(AudioFrame *p_buffer, float p_rate_scale, int p_frames);
+
+	virtual void start(float p_from_pos = 0.0);
+	virtual void stop();
+	virtual bool is_playing() const;
+
+	virtual int get_loop_count() const; //times it looped
+
+	virtual float get_playback_position() const;
+	virtual void seek(float p_time);
+
+	~AudioStreamPlaybackMicrophone();
+	AudioStreamPlaybackMicrophone();
+};
+
+//
+
 class AudioStreamPlaybackRandomPitch;
 
 class AudioStreamRandomPitch : public AudioStream {