Add unit test for DCT scale.
Change-Id: I0c05747653d227d01bfe3d5e444cc8580ff3575e
diff --git a/test/av1_fwd_txfm2d_test.cc b/test/av1_fwd_txfm2d_test.cc
index f1a18a3..1031f5b 100644
--- a/test/av1_fwd_txfm2d_test.cc
+++ b/test/av1_fwd_txfm2d_test.cc
@@ -362,6 +362,42 @@
TEST_P(AV1FwdTxfm2dTest, DISABLED_Speed) {
AV1FwdTxfm2dSpeedTest(GET_PARAM(0), GET_PARAM(1));
}
+TEST(AV1FwdTxfm2dTest, DCTScaleTest) {
+ BitDepthInfo bd_info;
+ bd_info.bit_depth = 8;
+ bd_info.use_highbitdepth_buf = 0;
+ DECLARE_ALIGNED(32, int16_t, src_diff[1024]);
+ DECLARE_ALIGNED(32, tran_low_t, coeff[1024]);
+
+ const TX_SIZE tx_size_list[4] = { TX_4X4, TX_8X8, TX_16X16, TX_32X32 };
+ const int stride_list[4] = { 4, 8, 16, 32 };
+ const int ref_scale_list[4] = { 64, 64, 64, 16 };
+
+ for (int i = 0; i < 4; i++) {
+ TX_SIZE tx_size = tx_size_list[i];
+ int stride = stride_list[i];
+ int array_size = stride * stride;
+
+ for (int i = 0; i < array_size; i++) {
+ src_diff[i] = 8;
+ coeff[i] = 0;
+ }
+
+ av1_quick_txfm(/*use_hadamard=*/0, tx_size, bd_info, src_diff, stride,
+ coeff);
+
+ double input_sse = 0;
+ double output_sse = 0;
+ for (int i = 0; i < array_size; i++) {
+ input_sse += pow(src_diff[i], 2);
+ output_sse += pow(coeff[i], 2);
+ }
+
+ double scale = output_sse / input_sse;
+
+ EXPECT_NEAR(scale, ref_scale_list[i], 5);
+ }
+}
using ::testing::Combine;
using ::testing::Values;
using ::testing::ValuesIn;
