Add a separate datarate test for denoiser enabled.

Change-Id: Ibc91a46d11ad9c58e340b4346ed813a1be9b404a
diff --git a/test/datarate_test.cc b/test/datarate_test.cc
index e8cbfbe..a3d730a 100644
--- a/test/datarate_test.cc
+++ b/test/datarate_test.cc
@@ -126,7 +126,36 @@
   int denoiser_on_;
 };
 
-TEST_P(DatarateTestLarge, BasicBufferModelDenoiserOff) {
+// Check basic datarate targeting, for a single bitrate, but loop over the
+// various denoiser settings.
+TEST_P(DatarateTestLarge, DenoiserLevels) {
+  cfg_.rc_buf_initial_sz = 500;
+  cfg_.rc_dropframe_thresh = 1;
+  cfg_.rc_max_quantizer = 56;
+  cfg_.rc_end_usage = VPX_CBR;
+  ::libvpx_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
+                                       30, 1, 0, 140);
+  for (int j = 1; j < 5; ++j) {
+    // Run over the denoiser levels.
+    // For the temporal denoiser (#if CONFIG_TEMPORAL_DENOISING) the level j
+    // refers to the 4 denoiser modes: denoiserYonly, denoiserOnYUV,
+    // denoiserOnAggressive, and denoiserOnAdaptive.
+    // For the spatial denoiser (if !CONFIG_TEMPORAL_DENOISING), the level j
+    // refers to the blur thresholds: 20, 40, 60 80.
+    // The j = 0 case (denoiser off) is covered in the tests below.
+    denoiser_on_ = j;
+    cfg_.rc_target_bitrate = 300;
+    ResetModel();
+    ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
+    ASSERT_GE(cfg_.rc_target_bitrate, effective_datarate_ * 0.95)
+        << " The datarate for the file exceeds the target!";
+
+    ASSERT_LE(cfg_.rc_target_bitrate, file_datarate_ * 1.3)
+        << " The datarate for the file missed the target!";
+  }
+}
+
+TEST_P(DatarateTestLarge, BasicBufferModel) {
   denoiser_on_ = 0;
   cfg_.rc_buf_initial_sz = 500;
   cfg_.rc_dropframe_thresh = 1;
@@ -158,40 +187,8 @@
   }
 }
 
-TEST_P(DatarateTestLarge, BasicBufferModel) {
-  denoiser_on_ = 1;
-  cfg_.rc_buf_initial_sz = 500;
-  cfg_.rc_dropframe_thresh = 1;
-  cfg_.rc_max_quantizer = 56;
-  cfg_.rc_end_usage = VPX_CBR;
-  // 2 pass cbr datarate control has a bug hidden by the small # of
-  // frames selected in this encode. The problem is that even if the buffer is
-  // negative we produce a keyframe on a cutscene. Ignoring datarate
-  // constraints
-  // TODO(jimbankoski): ( Fix when issue
-  // http://code.google.com/p/webm/issues/detail?id=495 is addressed. )
-  ::libvpx_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
-                                       30, 1, 0, 140);
-
-  // There is an issue for low bitrates in real-time mode, where the
-  // effective_datarate slightly overshoots the target bitrate.
-  // This is same the issue as noted about (#495).
-  // TODO(jimbankoski/marpan): Update test to run for lower bitrates (< 100),
-  // when the issue is resolved.
-  for (int i = 100; i < 800; i += 200) {
-    cfg_.rc_target_bitrate = i;
-    ResetModel();
-    ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
-    ASSERT_GE(cfg_.rc_target_bitrate, effective_datarate_ * 0.95)
-        << " The datarate for the file exceeds the target!";
-
-    ASSERT_LE(cfg_.rc_target_bitrate, file_datarate_ * 1.3)
-        << " The datarate for the file missed the target!";
-  }
-}
-
 TEST_P(DatarateTestLarge, ChangingDropFrameThresh) {
-  denoiser_on_ = 1;
+  denoiser_on_ = 0;
   cfg_.rc_buf_initial_sz = 500;
   cfg_.rc_max_quantizer = 36;
   cfg_.rc_end_usage = VPX_CBR;