Document DimensionChangeLargeImageMultiThread test

Document the purpose of the AVIFProgressiveTest.DimensionChangeLargeImageMultiThread test and give hints on how the test was constructed. Bug: aomedia:3382 Change-Id: I37e891ef9960deb6259716ad81fbb69378ee3103
cyh5272 · Mar 15, 2023 · e70761b · e70761b
1 parent 6f1f28d
commit e70761b
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/test/avif_progressive_test.cc b/test/avif_progressive_test.cc
@@ -189,6 +189,9 @@ TEST(AVIFProgressiveTest, DimensionChange) {
   EXPECT_EQ(AOM_CODEC_OK, aom_codec_destroy(&enc));
 }
 
+// This test reproduces bug aomedia:3382. Certain parameters such as width,
+// height, g_threads, usage, etc. were carefully chosen based on the
+// complicated logic of av1_select_sb_size() to cause an inconsistent sb_size.
 TEST(AVIFProgressiveTest, DimensionChangeLargeImageMultiThread) {
   constexpr int kWidth = 1920;
   constexpr int kHeight = 1080;