feat: AudioResampler (#66)

livekit-ffi/protocol/audio_frame.proto

@@ -36,6 +36,24 @@ message CaptureAudioFrameRequest {
 }
 message CaptureAudioFrameResponse {}
 
+// Create a new AudioResampler
+message NewAudioResamplerRequest {}
+message NewAudioResamplerResponse {
+  FFIHandleId handle = 1;
+}
+
+// Remix and resample an audio frame
+message RemixAndResampleRequest {
+  FFIHandleId resampler_handle = 1;
+  FFIHandleId buffer_handle = 2;
+  uint32 num_channels = 3;
+  uint32 sample_rate = 4;
+}
+
+message RemixAndResampleResponse {
+  FFIHandleId buffer_handle = 1;
+}
+
 ///
 /// AudioFrame buffer ///
 ///

livekit-ffi/protocol/ffi.proto

@@ -40,6 +40,8 @@ message FFIRequest {
     NewAudioStreamRequest new_audio_stream = 16;
     NewAudioSourceRequest new_audio_source = 17;
     CaptureAudioFrameRequest capture_audio_frame = 18;
+    NewAudioResamplerRequest new_audio_resampler = 19;
+    RemixAndResampleRequest remix_and_resample = 20;
   }
 }
 
@@ -72,6 +74,8 @@ message FFIResponse {
     NewAudioStreamResponse new_audio_stream = 16;
     NewAudioSourceResponse new_audio_source = 17;
     CaptureAudioFrameResponse capture_audio_frame = 18;
+    NewAudioResamplerResponse new_audio_resampler = 19;
+    RemixAndResampleResponse remix_and_resample = 20;
   }
 }