#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;
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;
reference_dct_2d(input, output_r);
for (int j = 0; j < 64; ++j)
- coeff[j] = round(output_r[j]);
+ 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];