Use array geometry in Beamformer

R=andrew@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/35559004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@8000 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/webrtc/modules/audio_processing/include/audio_processing.h b/webrtc/modules/audio_processing/include/audio_processing.h
index 79340ae..9754450 100644
--- a/webrtc/modules/audio_processing/include/audio_processing.h
+++ b/webrtc/modules/audio_processing/include/audio_processing.h
@@ -13,6 +13,7 @@
 
 #include <stddef.h>  // size_t
 #include <stdio.h>  // FILE
+#include <vector>
 
 #include "webrtc/base/platform_file.h"
 #include "webrtc/common.h"
@@ -82,12 +83,25 @@
   bool enabled;
 };
 
+// Coordinates in meters.
+struct Point {
+  Point(float x, float y, float z) {
+    c[0] = x;
+    c[1] = y;
+    c[2] = z;
+  }
+  float c[3];
+};
+
 // Use to enable beamforming. Must be provided through the constructor. It will
 // have no impact if used with AudioProcessing::SetExtraOptions().
 struct Beamforming {
   Beamforming() : enabled(false) {}
-  explicit Beamforming(bool enabled) : enabled(enabled) {}
-  bool enabled;
+  Beamforming(bool enabled, const std::vector<Point>& array_geometry)
+      : enabled(enabled),
+        array_geometry(array_geometry) {}
+  const bool enabled;
+  const std::vector<Point> array_geometry;
 };
 
 static const int kAudioProcMaxNativeSampleRateHz = 32000;