Adding APM configuration in AEC dump.

webrtc/modules/audio_processing/debug.proto

 syntax = "proto2";
 option optimize_for = LITE_RUNTIME;
 package webrtc.audioproc;
 
 message Init {
   optional int32 sample_rate = 1;
   optional int32 device_sample_rate = 2 [deprecated=true];
   optional int32 num_input_channels = 3;
   optional int32 num_output_channels = 4;
   optional int32 num_reverse_channels = 5;
@@ skipping 21 matching lines @@
   optional sint32 drift = 4;
   optional int32 level = 5;
   optional bool keypress = 6;
 
   // float deinterleaved data, where each repeated element points to a single
   // channel buffer of data.
   repeated bytes input_channel = 7;
   repeated bytes output_channel = 8;
 }
 
+message Config {
+  // Acoustic echo canceler
+  optional bool aec_enabled = 1;
+  optional bool aec_delay_agnostic = 2;
+  optional bool aec_drift_compensation = 3;
+  optional bool aec_extended_filter = 4;
+  optional int32 aec_suppression_level = 5;
+  // Mobile AEC
+  optional bool aecm_enabled = 11;
+  optional bool aecm_comfort_noise = 12;
+  optional int32 aecm_routing_mode = 13;
+  // Automatic gain controller
+  optional bool agc_enabled = 21;
+  optional bool agc_experiment = 22;

[minyue-webrtc, 2015/09/24 17:26:23]

I found agc_experiment a crucial information, and added it.

There can be other things that we may eventually want to add, like VAD,
beamformer, intelligibility.

I find that either they do not play a roll in signal processing (VAD,
intelligibility) or are not much used (beamformer), and it may be ok for this
moment to skip them.

To maintain readability for future changes, I tried to re-assigne ids to these
fields.

+  optional int32 agc_mode = 23;
+  optional bool agc_limiter = 24;
+  // High pass filter
+  optional bool hpf_enabled = 31;
+  // Noise suppression
+  optional bool ns_enabled = 41;
+  optional bool ns_experiment = 42;
+  optional int32 ns_level = 43;
+}
+
 message Event {
   enum Type {
     INIT = 0;
     REVERSE_STREAM = 1;
     STREAM = 2;
+    CONFIG = 4;
   }
 
   required Type type = 1;
 
   optional Init init = 2;
   optional ReverseStream reverse_stream = 3;
   optional Stream stream = 4;
+  optional Config config = 5;
 }