Added metrics test code for the FEC packet masks.

The test computes metrics (average residual loss) for each mask type and size, 
for a given set of loss models (random and bursty), and verifies various 
behaviour of the codes (including relation/comparison to RS code).

http://webrtc-codereview.appspot.com/748008
TBR=stefan@webrtc.org
Review URL: https://webrtc-codereview.appspot.com/929034

git-svn-id: http://webrtc.googlecode.com/svn/trunk@3189 4adac7df-926f-26a2-2b94-8c16560cd09d

webrtc/modules/rtp_rtcp/test/testFec/average_residual_loss_xor_codes.h

@@ -0,0 +1,188 @@
+/*
+ *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+namespace {
+
+// Maximum number of media packets allowed in this test. The burst mask types
+// are currently defined up to (kMaxMediaPacketsTest, kMaxMediaPacketsTest).
+const int kMaxMediaPacketsTest = 12;
+
+// Maximum number of FEC codes considered in this test.
+const int kNumberCodes = kMaxMediaPacketsTest * (kMaxMediaPacketsTest + 1) / 2;
+
+// For the random mask type: reference level for the maximum average residual
+// loss expected for each code size up to:
+// (kMaxMediaPacketsTest, kMaxMediaPacketsTest).
+const float kMaxResidualLossRandomMask[kNumberCodes] = {
+  0.009463f,
+  0.022436f,
+  0.007376f,
+  0.033895f,
+  0.012423f,
+  0.004644f,
+  0.043438f,
+  0.019937f,
+  0.008820f,
+  0.003438f,
+  0.051282f,
+  0.025795f,
+  0.012872f,
+  0.006458f,
+  0.003195f,
+  0.057728f,
+  0.032146f,
+  0.016708f,
+  0.009242f,
+  0.005054f,
+  0.003078f,
+  0.063050f,
+  0.037261f,
+  0.021767f,
+  0.012447f,
+  0.007099f,
+  0.003826f,
+  0.002504f,
+  0.067476f,
+  0.042348f,
+  0.026169f,
+  0.015695f,
+  0.009478f,
+  0.005887f,
+  0.003568f,
+  0.001689f,
+  0.071187f,
+  0.046575f,
+  0.031697f,
+  0.019797f,
+  0.012433f,
+  0.007027f,
+  0.004845f,
+  0.002777f,
+  0.001753f,
+  0.074326f,
+  0.050628f,
+  0.034978f,
+  0.021955f,
+  0.014821f,
+  0.009462f,
+  0.006393f,
+  0.004181f,
+  0.003105f,
+  0.001231f,
+  0.077008f,
+  0.054226f,
+  0.038407f,
+  0.026251f,
+  0.018634f,
+  0.011568f,
+  0.008130f,
+  0.004957f,
+  0.003334f,
+  0.002069f,
+  0.001304f,
+  0.079318f,
+  0.057180f,
+  0.041268f,
+  0.028842f,
+  0.020033f,
+  0.014061f,
+  0.009636f,
+  0.006411f,
+  0.004583f,
+  0.002817f,
+  0.001770f,
+  0.001258f
+};
+
+// For the bursty mask type: reference level for the maximum average residual
+// loss expected for each code size up to:
+// (kMaxMediaPacketsTestf, kMaxMediaPacketsTest).
+const float kMaxResidualLossBurstyMask[kNumberCodes] = {
+  0.033236f,
+  0.053344f,
+  0.026616f,
+  0.064129f,
+  0.036589f,
+  0.021892f,
+  0.071055f,
+  0.043890f,
+  0.028009f,
+  0.018524f,
+  0.075968f,
+  0.049828f,
+  0.033288f,
+  0.022791f,
+  0.016088f,
+  0.079672f,
+  0.054586f,
+  0.037872f,
+  0.026679f,
+  0.019326f,
+  0.014293f,
+  0.082582f,
+  0.058719f,
+  0.042045f,
+  0.030504f,
+  0.022391f,
+  0.016894f,
+  0.012946f,
+  0.084935f,
+  0.062169f,
+  0.045620f,
+  0.033713f,
+  0.025570f,
+  0.019439f,
+  0.015121f,
+  0.011920f,
+  0.086881f,
+  0.065267f,
+  0.048721f,
+  0.037613f,
+  0.028278f,
+  0.022152f,
+  0.017314f,
+  0.013791f,
+  0.011130f,
+  0.088516f,
+  0.067911f,
+  0.051709f,
+  0.040819f,
+  0.030777f,
+  0.024547f,
+  0.019689f,
+  0.015877f,
+  0.012773f,
+  0.010516f,
+  0.089909f,
+  0.070332f,
+  0.054402f,
+  0.043210f,
+  0.034096f,
+  0.026625f,
+  0.021823f,
+  0.017648f,
+  0.014649f,
+  0.011982f,
+  0.010035f,
+  0.091109f,
+  0.072428f,
+  0.056775f,
+  0.045418f,
+  0.036679f,
+  0.028599f,
+  0.023693f,
+  0.019966f,
+  0.016603f,
+  0.013690f,
+  0.011359f,
+  0.009657f
+};
+
+}   // namespace

webrtc/modules/rtp_rtcp/test/testFec/test_fec.gypi

@@ -7,24 +7,38 @@
 # be found in the AUTHORS file in the root of the source tree.
 
 {
-  'targets': [
-    {
-      'target_name': 'test_fec',
+  'targets': [{   
+     'target_name': 'test_fec',
       'type': 'executable',
       'dependencies': [
         'rtp_rtcp',
         '<(webrtc_root)/test/test.gyp:test_support_main',
-      ],
-      
+      ],      
       'include_dirs': [
         '../../source',
         '../../../../system_wrappers/interface',
       ],
-   
       'sources': [
         'test_fec.cc',
+      ],         
+    },
+    {   
+      'target_name': 'test_packet_masks_metrics',
+      'type': 'executable',
+      'dependencies': [
+        'rtp_rtcp',
+        '<(webrtc_root)/test/test.gyp:test_support_main',
+        'rtp_rtcp',
+        '<(DEPTH)/testing/gtest.gyp:gtest',
+      ],      
+      'include_dirs': [
+        '../../source',
+        '<(webrtc_root)/system_wrappers/interface',
+      ],
+      'sources': [
+        'test_packet_masks_metrics.cc',
+        'average_residual_loss_xor_codes.h',
       ],
-      
     },
   ],
 }