Make the nonlinear beamformer steerable

webrtc/modules/audio_processing/test/audioproc_float.cc

Index: webrtc/modules/audio_processing/test/audioproc_float.cc
diff --git a/webrtc/modules/audio_processing/test/audioproc_float.cc b/webrtc/modules/audio_processing/test/audioproc_float.cc
index 9c44d76ecc29fb404a91630fd7f5efe1247fe988..0549911ca7b52dcfe475479437d9a56c9011b522 100644
--- a/webrtc/modules/audio_processing/test/audioproc_float.cc
+++ b/webrtc/modules/audio_processing/test/audioproc_float.cc
@@ -37,6 +37,7 @@ DEFINE_string(mic_positions, "",
     "Space delimited cartesian coordinates of microphones in meters. "
     "The coordinates of each point are contiguous. "
     "For a two element array: \"x1 y1 z1 x2 y2 z2\"");
+DEFINE_double(target_angle_degrees, 90, "The azimuth of the target in radians");
 
 DEFINE_bool(aec, false, "Enable echo cancellation.");
 DEFINE_bool(agc, false, "Enable automatic gain control.");
@@ -107,7 +108,9 @@ int main(int argc, char* argv[]) {
         ParseArrayGeometry(FLAGS_mic_positions, num_mics);
     RTC_CHECK_EQ(array_geometry.size(), num_mics);
 
-    config.Set<Beamforming>(new Beamforming(true, array_geometry));
+    config.Set<Beamforming>(new Beamforming(
+        true, array_geometry,
+        SphericalPointf(M_PI * FLAGS_target_angle_degrees / 180.f, 0.f, 1.f)));

[Andrew MacDonald, 2015/10/20 03:00:08]

Do we have a DegreesToRadians helper somewhere? If not, probably good to add to
array_util.h.

(Also add the inverse.)

[aluebs-webrtc, 2015/10/21 01:41:40]

I didn't find any helper functions, so I added them.

[Andrew MacDonald, 2015/10/21 03:27:43]

Nice.

   }
 
   rtc::scoped_ptr<AudioProcessing> ap(AudioProcessing::Create(config));