tests: remove redundant round() definition

[libvpx] / test / idct8x8_test.cc

diff --git a/test/idct8x8_test.cc b/test/idct8x8_test.cc
index 1a1a2344ef34dba8e862316c52734ae2f80c7b23..04487c45252d127c8a3a4b479b7f7cdb0e011e86 100644 (file)
--- a/test/idct8x8_test.cc
+++ b/test/idct8x8_test.cc
@@ -17,20 +17,12 @@
 #include "./vpx_dsp_rtcd.h"
 #include "test/acm_random.h"
 #include "vpx/vpx_integer.h"
+#include "vpx_ports/msvc.h"  // for round()
 
 using libvpx_test::ACMRandom;
 
 namespace {
 
-#ifdef _MSC_VER
-static int round(double x) {
-  if (x < 0)
-    return static_cast<int>(ceil(x - 0.5));
-  else
-    return static_cast<int>(floor(x + 0.5));
-}
-#endif
-
 void reference_dct_1d(double input[8], double output[8]) {
   const double kPi = 3.141592653589793238462643383279502884;
   const double kInvSqrt2 = 0.707106781186547524400844362104;
@@ -67,43 +59,6 @@ void reference_dct_2d(int16_t input[64], double output[64]) {
     output[i] *= 2;
 }
 
-void reference_idct_1d(double input[8], double output[8]) {
-  const double kPi = 3.141592653589793238462643383279502884;
-  const double kSqrt2 = 1.414213562373095048801688724209698;
-  for (int k = 0; k < 8; k++) {
-    output[k] = 0.0;
-    for (int n = 0; n < 8; n++) {
-      output[k] += input[n]*cos(kPi*(2*k+1)*n/16.0);
-      if (n == 0)
-        output[k] = output[k]/kSqrt2;
-    }
-  }
-}
-
-void reference_idct_2d(double input[64], int16_t output[64]) {
-  double out[64], out2[64];
-  // First transform rows
-  for (int i = 0; i < 8; ++i) {
-    double temp_in[8], temp_out[8];
-    for (int j = 0; j < 8; ++j)
-      temp_in[j] = input[j + i*8];
-    reference_idct_1d(temp_in, temp_out);
-    for (int j = 0; j < 8; ++j)
-      out[j + i*8] = temp_out[j];
-  }
-  // Then transform columns
-  for (int i = 0; i < 8; ++i) {
-    double temp_in[8], temp_out[8];
-    for (int j = 0; j < 8; ++j)
-      temp_in[j] = out[j*8 + i];
-    reference_idct_1d(temp_in, temp_out);
-    for (int j = 0; j < 8; ++j)
-      out2[j*8 + i] = temp_out[j];
-  }
-  for (int i = 0; i < 64; ++i)
-    output[i] = round(out2[i]/32);
-}
-
 TEST(VP9Idct8x8Test, AccuracyCheck) {
   ACMRandom rnd(ACMRandom::DeterministicSeed());
   const int count_test_block = 10000;
@@ -123,8 +78,8 @@ TEST(VP9Idct8x8Test, AccuracyCheck) {
 
     reference_dct_2d(input, output_r);
     for (int j = 0; j < 64; ++j)
-      coeff[j] = round(output_r[j]);
-    vp9_idct8x8_64_add_c(coeff, dst, 8);
+      coeff[j] = static_cast<tran_low_t>(round(output_r[j]));
+    vpx_idct8x8_64_add_c(coeff, dst, 8);
     for (int j = 0; j < 64; ++j) {
       const int diff = dst[j] - src[j];
       const int error = diff * diff;