vp9: Modify ChangingDropFrameThresh unittest.

Add another (lower) bitrate to the test, to cover
frame drop behavior at low bitrate range.

Change-Id: Iaad003974159daf3d2d65ef3a6575a3e72e498d6

diff --git a/test/datarate_test.cc b/test/datarate_test.cc
index b93148e34df4cc0a586b145a4ea8687db3c8f119..a120a88d2a249f9abd675021f4f45f55fdae215b 100644 (file)
--- a/test/datarate_test.cc
+++ b/test/datarate_test.cc
@@ -792,26 +792,29 @@ TEST_P(DatarateTestVP9Large, ChangingDropFrameThresh) {
                                        30, 1, 0, 140);
 
   const int kDropFrameThreshTestStep = 30;
-  vpx_codec_pts_t last_drop = 140;
-  int last_num_drops = 0;
-  for (int i = 10; i < 100; i += kDropFrameThreshTestStep) {
-    cfg_.rc_dropframe_thresh = i;
-    ResetModel();
-    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!";
-    ASSERT_LE(first_drop_, last_drop)
-        << " The first dropped frame for drop_thresh " << i
-        << " > first dropped frame for drop_thresh "
-        << i - kDropFrameThreshTestStep;
-    ASSERT_GE(num_drops_, last_num_drops * 0.85)
-        << " The number of dropped frames for drop_thresh " << i
-        << " < number of dropped frames for drop_thresh "
-        << i - kDropFrameThreshTestStep;
-    last_drop = first_drop_;
-    last_num_drops = num_drops_;
+  for (int j = 50; j <= 150; j += 100) {
+    cfg_.rc_target_bitrate = j;
+    vpx_codec_pts_t last_drop = 140;
+    int last_num_drops = 0;
+    for (int i = 10; i < 100; i += kDropFrameThreshTestStep) {
+      cfg_.rc_dropframe_thresh = i;
+      ResetModel();
+      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 * 1.25)
+          << " The datarate for the file is greater than target by too much!";
+      ASSERT_LE(first_drop_, last_drop)
+          << " The first dropped frame for drop_thresh " << i
+          << " > first dropped frame for drop_thresh "
+          << i - kDropFrameThreshTestStep;
+      ASSERT_GE(num_drops_, last_num_drops * 0.85)
+          << " The number of dropped frames for drop_thresh " << i
+          << " < number of dropped frames for drop_thresh "
+          << i - kDropFrameThreshTestStep;
+      last_drop = first_drop_;
+      last_num_drops = num_drops_;
+    }
   }
 }