16fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org/* 26fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org * Copyright (c) 2012 The WebM project authors. All Rights Reserved. 36fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org * 46fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org * Use of this source code is governed by a BSD-style license 56fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org * that can be found in the LICENSE file in the root of the source 66fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org * tree. An additional intellectual property rights grant can be found 76fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org * in the file PATENTS. All contributing project authors may 86fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org * be found in the AUTHORS file in the root of the source tree. 96fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org */ 106fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org 116fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org#include <math.h> 126fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org#include <stdlib.h> 136fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org#include <string.h> 146fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org 156fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org#include "third_party/googletest/src/include/gtest/gtest.h" 166fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org 17f9586bb54d74c97d07b09eb2512f8569c9c1c025fgalligan@chromium.org#include "./vp9_rtcd.h" 186fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org 19f9586bb54d74c97d07b09eb2512f8569c9c1c025fgalligan@chromium.org#include "test/acm_random.h" 206fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org#include "vpx/vpx_integer.h" 216fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org 226fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.orgusing libvpx_test::ACMRandom; 236fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org 246fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.orgnamespace { 256fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org 266fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org#ifdef _MSC_VER 276fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.orgstatic int round(double x) { 28f9586bb54d74c97d07b09eb2512f8569c9c1c025fgalligan@chromium.org if (x < 0) 29f9586bb54d74c97d07b09eb2512f8569c9c1c025fgalligan@chromium.org return static_cast<int>(ceil(x - 0.5)); 306fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org else 31f9586bb54d74c97d07b09eb2512f8569c9c1c025fgalligan@chromium.org return static_cast<int>(floor(x + 0.5)); 326fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org} 336fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org#endif 346fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org 356fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.orgvoid reference_dct_1d(double input[8], double output[8]) { 366fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org const double kPi = 3.141592653589793238462643383279502884; 376fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org const double kInvSqrt2 = 0.707106781186547524400844362104; 386fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org for (int k = 0; k < 8; k++) { 396fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org output[k] = 0.0; 406fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org for (int n = 0; n < 8; n++) 416fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org output[k] += input[n]*cos(kPi*(2*n+1)*k/16.0); 426fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org if (k == 0) 436fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org output[k] = output[k]*kInvSqrt2; 446fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org } 456fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org} 466fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org 476fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.orgvoid reference_dct_2d(int16_t input[64], double output[64]) { 486fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org // First transform columns 496fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org for (int i = 0; i < 8; ++i) { 506fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org double temp_in[8], temp_out[8]; 516fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org for (int j = 0; j < 8; ++j) 526fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org temp_in[j] = input[j*8 + i]; 536fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org reference_dct_1d(temp_in, temp_out); 546fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org for (int j = 0; j < 8; ++j) 556fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org output[j*8 + i] = temp_out[j]; 566fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org } 576fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org // Then transform rows 586fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org for (int i = 0; i < 8; ++i) { 596fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org double temp_in[8], temp_out[8]; 606fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org for (int j = 0; j < 8; ++j) 616fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org temp_in[j] = output[j + i*8]; 626fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org reference_dct_1d(temp_in, temp_out); 636fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org for (int j = 0; j < 8; ++j) 646fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org output[j + i*8] = temp_out[j]; 656fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org } 666fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org // Scale by some magic number 676fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org for (int i = 0; i < 64; ++i) 686fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org output[i] *= 2; 696fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org} 706fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org 716fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.orgvoid reference_idct_1d(double input[8], double output[8]) { 726fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org const double kPi = 3.141592653589793238462643383279502884; 736fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org const double kSqrt2 = 1.414213562373095048801688724209698; 746fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org for (int k = 0; k < 8; k++) { 756fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org output[k] = 0.0; 766fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org for (int n = 0; n < 8; n++) { 776fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org output[k] += input[n]*cos(kPi*(2*k+1)*n/16.0); 786fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org if (n == 0) 796fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org output[k] = output[k]/kSqrt2; 806fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org } 816fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org } 826fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org} 836fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org 846fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.orgvoid reference_idct_2d(double input[64], int16_t output[64]) { 856fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org double out[64], out2[64]; 866fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org // First transform rows 876fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org for (int i = 0; i < 8; ++i) { 886fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org double temp_in[8], temp_out[8]; 896fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org for (int j = 0; j < 8; ++j) 906fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org temp_in[j] = input[j + i*8]; 916fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org reference_idct_1d(temp_in, temp_out); 926fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org for (int j = 0; j < 8; ++j) 936fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org out[j + i*8] = temp_out[j]; 946fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org } 956fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org // Then transform columns 966fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org for (int i = 0; i < 8; ++i) { 976fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org double temp_in[8], temp_out[8]; 986fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org for (int j = 0; j < 8; ++j) 996fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org temp_in[j] = out[j*8 + i]; 1006fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org reference_idct_1d(temp_in, temp_out); 1016fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org for (int j = 0; j < 8; ++j) 1026fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org out2[j*8 + i] = temp_out[j]; 1036fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org } 1046fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org for (int i = 0; i < 64; ++i) 1056fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org output[i] = round(out2[i]/32); 1066fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org} 1076fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org 1086fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.orgTEST(VP9Idct8x8Test, AccuracyCheck) { 1096fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org ACMRandom rnd(ACMRandom::DeterministicSeed()); 1106fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org const int count_test_block = 10000; 1116fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org for (int i = 0; i < count_test_block; ++i) { 11287997d490ae52aa962a985c95b3cddf7f8832641johannkoenig@chromium.org int16_t input[64]; 11387997d490ae52aa962a985c95b3cddf7f8832641johannkoenig@chromium.org tran_low_t coeff[64]; 1146fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org double output_r[64]; 11510a9a0d835561a7f2300c561c514efcf374554d6fgalligan@chromium.org uint8_t dst[64], src[64]; 1166fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org 11710a9a0d835561a7f2300c561c514efcf374554d6fgalligan@chromium.org for (int j = 0; j < 64; ++j) { 11810a9a0d835561a7f2300c561c514efcf374554d6fgalligan@chromium.org src[j] = rnd.Rand8(); 11910a9a0d835561a7f2300c561c514efcf374554d6fgalligan@chromium.org dst[j] = rnd.Rand8(); 12010a9a0d835561a7f2300c561c514efcf374554d6fgalligan@chromium.org } 1216fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org // Initialize a test block with input range [-255, 255]. 1226fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org for (int j = 0; j < 64; ++j) 12310a9a0d835561a7f2300c561c514efcf374554d6fgalligan@chromium.org input[j] = src[j] - dst[j]; 1246fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org 1256fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org reference_dct_2d(input, output_r); 1266fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org for (int j = 0; j < 64; ++j) 1276fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org coeff[j] = round(output_r[j]); 1280d106b34dc08439a7c6887d1316a3e1a35f8f0cajohannkoenig@chromium.org vp9_idct8x8_64_add_c(coeff, dst, 8); 1296fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org for (int j = 0; j < 64; ++j) { 13010a9a0d835561a7f2300c561c514efcf374554d6fgalligan@chromium.org const int diff = dst[j] - src[j]; 1316fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org const int error = diff * diff; 1326fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org EXPECT_GE(1, error) 1336fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org << "Error: 8x8 FDCT/IDCT has error " << error 1346fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org << " at index " << j; 1356fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org } 1366fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org } 1376fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org} 1386fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org 1396fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org} // namespace 140