Add unit test for VP9 denoiser.

Check basic datarate targeting for a single bitrate
when the denoiser is on.

Change-Id: Iad0e664859ffeb4ae6dd5f6dfb71a121e917e3fb

test/datarate_test.cc

@@ -238,6 +238,8 @@ class DatarateTestVP9Large : public ::libvpx_test::EncoderTest,
     tot_frame_number_ = 0;
     first_drop_ = 0;
     num_drops_ = 0;
+    // Denoiser is off by default.
+    denoiser_on_ = 0;
     // For testing up to 3 layers.
     for (int i = 0; i < 3; ++i) {
       bits_total_[i] = 0;
@@ -311,6 +313,7 @@ class DatarateTestVP9Large : public ::libvpx_test::EncoderTest,
                                   ::libvpx_test::Encoder *encoder) {
     if (video->frame() == 1) {
       encoder->Control(VP8E_SET_CPUUSED, set_cpu_used_);
+      encoder->Control(VP9E_SET_NOISE_SENSITIVITY, denoiser_on_);
     }
     if (cfg_.ts_number_layers > 1) {
       if (video->frame() == 1) {
@@ -392,6 +395,7 @@ class DatarateTestVP9Large : public ::libvpx_test::EncoderTest,
   int64_t bits_in_buffer_model_;
   vpx_codec_pts_t first_drop_;
   int num_drops_;
+  int denoiser_on_;
 };
 
 // Check basic rate targeting,
@@ -615,6 +619,36 @@ TEST_P(DatarateTestVP9Large, BasicRateTargeting3TemporalLayersFrameDropping) {
   }
 }
 
+#if CONFIG_VP9_TEMPORAL_DENOISING
+// Check basic datarate targeting, for a single bitrate, when denoiser is on.
+TEST_P(DatarateTestVP9Large, DenoiserLevels) {
+  cfg_.rc_buf_initial_sz = 500;
+  cfg_.rc_buf_optimal_sz = 500;
+  cfg_.rc_buf_sz = 1000;
+  cfg_.rc_dropframe_thresh = 1;
+  cfg_.rc_min_quantizer = 2;
+  cfg_.rc_max_quantizer = 56;
+  cfg_.rc_end_usage = VPX_CBR;
+  cfg_.g_lag_in_frames = 0;
+
+  ::libvpx_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
+                                       30, 1, 0, 140);
+
+  // For the temporal denoiser (#if CONFIG_VP9_TEMPORAL_DENOISING),
+  // there is only one denoiser mode: denoiserYonly(which is 1),
+  // but may add more modes in the future.
+  cfg_.rc_target_bitrate = 300;
+  ResetModel();
+  // Turn on the denoiser.
+  denoiser_on_ = 1;
+  ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
+  ASSERT_GE(effective_datarate_[0], cfg_.rc_target_bitrate * 0.85)
+      << " The datarate for the file is lower than target by too much!";
+  ASSERT_LE(effective_datarate_[0], cfg_.rc_target_bitrate * 1.15)
+      << " The datarate for the file is greater than target by too much!";
+}
+#endif
+
 VP8_INSTANTIATE_TEST_CASE(DatarateTestLarge, ALL_TEST_MODES);
 VP9_INSTANTIATE_TEST_CASE(DatarateTestVP9Large,
                           ::testing::Values(::libvpx_test::kOnePassGood,