/* *  Copyright (c) 2012 The WebM project authors. All Rights Reserved. * *  Use of this source code is governed by a BSD-style license *  that can be found in the LICENSE file in the root of the source *  tree. An additional intellectual property rights grant can be found *  in the file PATENTS.  All contributing project authors may *  be found in the AUTHORS file in the root of the source tree. */ #include <math.h>#include <stdlib.h>#include <string.h>#include <tuple> #include "third_party/googletest/src/include/gtest/gtest.h" #include "./vp9_rtcd.h"#include "./vpx_dsp_rtcd.h"#include "test/acm_random.h"#include "test/clear_system_state.h"#include "test/register_state_check.h"#include "test/util.h"#include "vp9/common/vp9_entropy.h"#include "vp9/common/vp9_scan.h"#include "vpx/vpx_codec.h"#include "vpx/vpx_integer.h"#include "vpx_ports/mem.h"#include "vpx_ports/msvc.h"  // for round() using libvpx_test::ACMRandom; namespace { const int kNumCoeffs = 256;const double C1 = 0.995184726672197;const double C2 = 0.98078528040323;const double C3 = 0.956940335732209;const double C4 = 0.923879532511287;const double C5 = 0.881921264348355;const double C6 = 0.831469612302545;const double C7 = 0.773010453362737;const double C8 = 0.707106781186548;const double C9 = 0.634393284163646;const double C10 = 0.555570233019602;const double C11 = 0.471396736825998;const double C12 = 0.38268343236509;const double C13 = 0.290284677254462;const double C14 = 0.195090322016128;const double C15 = 0.098017140329561; void butterfly_16x16_dct_1d(double input[16], double output[16]) {  double step[16];  double intermediate[16];  double temp1, temp2;   // step 1  step[0] = input[0] + input[15];  step[1] = input[1] + input[14];  step[2] = input[2] + input[13];  step[3] = input[3] + input[12];  step[4] = input[4] + input[11];  step[5] = input[5] + input[10];  step[6] = input[6] + input[9];  step[7] = input[7] + input[8];  step[8] = input[7] - input[8];  step[9] = input[6] - input[9];  step[10] = input[5] - input[10];  step[11] = input[4] - input[11];  step[12] = input[3] - input[12];  step[13] = input[2] - input[13];  step[14] = input[1] - input[14];  step[15] = input[0] - input[15];   // step 2  output[0] = step[0] + step[7];  output[1] = step[1] + step[6];  output[2] = step[2] + step[5];  output[3] = step[3] + step[4];  output[4] = step[3] - step[4];  output[5] = step[2] - step[5];  output[6] = step[1] - step[6];  output[7] = step[0] - step[7];   temp1 = step[8] * C7;  temp2 = step[15] * C9;  output[8] = temp1 + temp2;   temp1 = step[9] * C11;  temp2 = step[14] * C5;  output[9] = temp1 - temp2;   temp1 = step[10] * C3;  temp2 = step[13] * C13;  output[10] = temp1 + temp2;   temp1 = step[11] * C15;  temp2 = step[12] * C1;  output[11] = temp1 - temp2;   temp1 = step[11] * C1;  temp2 = step[12] * C15;  output[12] = temp2 + temp1;   temp1 = step[10] * C13;  temp2 = step[13] * C3;  output[13] = temp2 - temp1;   temp1 = step[9] * C5;  temp2 = step[14] * C11;  output[14] = temp2 + temp1;   temp1 = step[8] * C9;  temp2 = step[15] * C7;  output[15] = temp2 - temp1;   // step 3  step[0] = output[0] + output[3];  step[1] = output[1] + output[2];  step[2] = output[1] - output[2];  step[3] = output[0] - output[3];   temp1 = output[4] * C14;  temp2 = output[7] * C2;  step[4] = temp1 + temp2;   temp1 = output[5] * C10;  temp2 = output[6] * C6;  step[5] = temp1 + temp2;   temp1 = output[5] * C6;  temp2 = output[6] * C10;  step[6] = temp2 - temp1;   temp1 = output[4] * C2;  temp2 = output[7] * C14;  step[7] = temp2 - temp1;   step[8] = output[8] + output[11];  step[9] = output[9] + output[10];  step[10] = output[9] - output[10];  step[11] = output[8] - output[11];   step[12] = output[12] + output[15];  step[13] = output[13] + output[14];  step[14] = output[13] - output[14];  step[15] = output[12] - output[15];   // step 4  output[0] = (step[0] + step[1]);  output[8] = (step[0] - step[1]);   temp1 = step[2] * C12;  temp2 = step[3] * C4;  temp1 = temp1 + temp2;  output[4] = 2 * (temp1 * C8);   temp1 = step[2] * C4;  temp2 = step[3] * C12;  temp1 = temp2 - temp1;  output[12] = 2 * (temp1 * C8);   output[2] = 2 * ((step[4] + step[5]) * C8);  output[14] = 2 * ((step[7] - step[6]) * C8);   temp1 = step[4] - step[5];  temp2 = step[6] + step[7];  output[6] = (temp1 + temp2);  output[10] = (temp1 - temp2);   intermediate[8] = step[8] + step[14];  intermediate[9] = step[9] + step[15];   temp1 = intermediate[8] * C12;  temp2 = intermediate[9] * C4;  temp1 = temp1 - temp2;  output[3] = 2 * (temp1 * C8);   temp1 = intermediate[8] * C4;  temp2 = intermediate[9] * C12;  temp1 = temp2 + temp1;  output[13] = 2 * (temp1 * C8);   output[9] = 2 * ((step[10] + step[11]) * C8);   intermediate[11] = step[10] - step[11];  intermediate[12] = step[12] + step[13];  intermediate[13] = step[12] - step[13];  intermediate[14] = step[8] - step[14];  intermediate[15] = step[9] - step[15];   output[15] = (intermediate[11] + intermediate[12]);  output[1] = -(intermediate[11] - intermediate[12]);   output[7] = 2 * (intermediate[13] * C8);   temp1 = intermediate[14] * C12;  temp2 = intermediate[15] * C4;  temp1 = temp1 - temp2;  output[11] = -2 * (temp1 * C8);   temp1 = intermediate[14] * C4;  temp2 = intermediate[15] * C12;  temp1 = temp2 + temp1;  output[5] = 2 * (temp1 * C8);} void reference_16x16_dct_2d(int16_t input[256], double output[256]) {  // First transform columns  for (int i = 0; i < 16; ++i) {    double temp_in[16], temp_out[16];    for (int j = 0; j < 16; ++j) temp_in[j] = input[j * 16 + i];    butterfly_16x16_dct_1d(temp_in, temp_out);    for (int j = 0; j < 16; ++j) output[j * 16 + i] = temp_out[j];  }  // Then transform rows  for (int i = 0; i < 16; ++i) {    double temp_in[16], temp_out[16];    for (int j = 0; j < 16; ++j) temp_in[j] = output[j + i * 16];    butterfly_16x16_dct_1d(temp_in, temp_out);    // Scale by some magic number    for (int j = 0; j < 16; ++j) output[j + i * 16] = temp_out[j] / 2;  }} typedef void (*FdctFunc)(const int16_t *in, tran_low_t *out, int stride);typedef void (*IdctFunc)(const tran_low_t *in, uint8_t *out, int stride);typedef void (*FhtFunc)(const int16_t *in, tran_low_t *out, int stride,                        int tx_type);typedef void (*IhtFunc)(const tran_low_t *in, uint8_t *out, int stride,                        int tx_type); typedef std::tuple<FdctFunc, IdctFunc, int, vpx_bit_depth_t> Dct16x16Param;typedef std::tuple<FhtFunc, IhtFunc, int, vpx_bit_depth_t> Ht16x16Param;typedef std::tuple<IdctFunc, IdctFunc, int, vpx_bit_depth_t> Idct16x16Param; void fdct16x16_ref(const int16_t *in, tran_low_t *out, int stride,                   int /*tx_type*/) {  vpx_fdct16x16_c(in, out, stride);} void idct16x16_ref(const tran_low_t *in, uint8_t *dest, int stride,                   int /*tx_type*/) {  vpx_idct16x16_256_add_c(in, dest, stride);} void fht16x16_ref(const int16_t *in, tran_low_t *out, int stride, int tx_type) {  vp9_fht16x16_c(in, out, stride, tx_type);} void iht16x16_ref(const tran_low_t *in, uint8_t *dest, int stride,                  int tx_type) {  vp9_iht16x16_256_add_c(in, dest, stride, tx_type);} #if CONFIG_VP9_HIGHBITDEPTHvoid idct16x16_10(const tran_low_t *in, uint8_t *out, int stride) {  vpx_highbd_idct16x16_256_add_c(in, CAST_TO_SHORTPTR(out), stride, 10);} void idct16x16_12(const tran_low_t *in, uint8_t *out, int stride) {  vpx_highbd_idct16x16_256_add_c(in, CAST_TO_SHORTPTR(out), stride, 12);} void idct16x16_10_ref(const tran_low_t *in, uint8_t *out, int stride,                      int /*tx_type*/) {  idct16x16_10(in, out, stride);} void idct16x16_12_ref(const tran_low_t *in, uint8_t *out, int stride,                      int /*tx_type*/) {  idct16x16_12(in, out, stride);} void iht16x16_10(const tran_low_t *in, uint8_t *out, int stride, int tx_type) {  vp9_highbd_iht16x16_256_add_c(in, CAST_TO_SHORTPTR(out), stride, tx_type, 10);} void iht16x16_12(const tran_low_t *in, uint8_t *out, int stride, int tx_type) {  vp9_highbd_iht16x16_256_add_c(in, CAST_TO_SHORTPTR(out), stride, tx_type, 12);} #if HAVE_SSE2void idct16x16_10_add_10_c(const tran_low_t *in, uint8_t *out, int stride) {  vpx_highbd_idct16x16_10_add_c(in, CAST_TO_SHORTPTR(out), stride, 10);} void idct16x16_10_add_12_c(const tran_low_t *in, uint8_t *out, int stride) {  vpx_highbd_idct16x16_10_add_c(in, CAST_TO_SHORTPTR(out), stride, 12);} void idct16x16_256_add_10_sse2(const tran_low_t *in, uint8_t *out, int stride) {  vpx_highbd_idct16x16_256_add_sse2(in, CAST_TO_SHORTPTR(out), stride, 10);} void idct16x16_256_add_12_sse2(const tran_low_t *in, uint8_t *out, int stride) {  vpx_highbd_idct16x16_256_add_sse2(in, CAST_TO_SHORTPTR(out), stride, 12);} void idct16x16_10_add_10_sse2(const tran_low_t *in, uint8_t *out, int stride) {  vpx_highbd_idct16x16_10_add_sse2(in, CAST_TO_SHORTPTR(out), stride, 10);} void idct16x16_10_add_12_sse2(const tran_low_t *in, uint8_t *out, int stride) {  vpx_highbd_idct16x16_10_add_sse2(in, CAST_TO_SHORTPTR(out), stride, 12);}#endif  // HAVE_SSE2#endif  // CONFIG_VP9_HIGHBITDEPTH class Trans16x16TestBase { public:  virtual ~Trans16x16TestBase() {}  protected:  virtual void RunFwdTxfm(int16_t *in, tran_low_t *out, int stride) = 0;   virtual void RunInvTxfm(tran_low_t *out, uint8_t *dst, int stride) = 0;   void RunAccuracyCheck() {    ACMRandom rnd(ACMRandom::DeterministicSeed());    uint32_t max_error = 0;    int64_t total_error = 0;    const int count_test_block = 10000;    for (int i = 0; i < count_test_block; ++i) {      DECLARE_ALIGNED(16, int16_t, test_input_block[kNumCoeffs]);      DECLARE_ALIGNED(16, tran_low_t, test_temp_block[kNumCoeffs]);      DECLARE_ALIGNED(16, uint8_t, dst[kNumCoeffs]);      DECLARE_ALIGNED(16, uint8_t, src[kNumCoeffs]);#if CONFIG_VP9_HIGHBITDEPTH      DECLARE_ALIGNED(16, uint16_t, dst16[kNumCoeffs]);      DECLARE_ALIGNED(16, uint16_t, src16[kNumCoeffs]);#endif       // Initialize a test block with input range [-mask_, mask_].      for (int j = 0; j < kNumCoeffs; ++j) {        if (bit_depth_ == VPX_BITS_8) {          src[j] = rnd.Rand8();          dst[j] = rnd.Rand8();          test_input_block[j] = src[j] - dst[j];#if CONFIG_VP9_HIGHBITDEPTH        } else {          src16[j] = rnd.Rand16() & mask_;          dst16[j] = rnd.Rand16() & mask_;          test_input_block[j] = src16[j] - dst16[j];#endif        }      }       ASM_REGISTER_STATE_CHECK(          RunFwdTxfm(test_input_block, test_temp_block, pitch_));      if (bit_depth_ == VPX_BITS_8) {        ASM_REGISTER_STATE_CHECK(RunInvTxfm(test_temp_block, dst, pitch_));#if CONFIG_VP9_HIGHBITDEPTH      } else {        ASM_REGISTER_STATE_CHECK(            RunInvTxfm(test_temp_block, CAST_TO_BYTEPTR(dst16), pitch_));#endif      }       for (int j = 0; j < kNumCoeffs; ++j) {#if CONFIG_VP9_HIGHBITDEPTH        const int32_t diff =            bit_depth_ == VPX_BITS_8 ? dst[j] - src[j] : dst16[j] - src16[j];#else        const int32_t diff = dst[j] - src[j];#endif        const uint32_t error = diff * diff;        if (max_error < error) max_error = error;        total_error += error;      }    }     EXPECT_GE(1u << 2 * (bit_depth_ - 8), max_error)        << "Error: 16x16 FHT/IHT has an individual round trip error > 1";     EXPECT_GE(count_test_block << 2 * (bit_depth_ - 8), total_error)        << "Error: 16x16 FHT/IHT has average round trip error > 1 per block";  }   void RunCoeffCheck() {    ACMRandom rnd(ACMRandom::DeterministicSeed());    const int count_test_block = 1000;    DECLARE_ALIGNED(16, int16_t, input_block[kNumCoeffs]);    DECLARE_ALIGNED(16, tran_low_t, output_ref_block[kNumCoeffs]);    DECLARE_ALIGNED(16, tran_low_t, output_block[kNumCoeffs]);     for (int i = 0; i < count_test_block; ++i) {      // Initialize a test block with input range [-mask_, mask_].      for (int j = 0; j < kNumCoeffs; ++j) {        input_block[j] = (rnd.Rand16() & mask_) - (rnd.Rand16() & mask_);      }       fwd_txfm_ref(input_block, output_ref_block, pitch_, tx_type_);      ASM_REGISTER_STATE_CHECK(RunFwdTxfm(input_block, output_block, pitch_));       // The minimum quant value is 4.      for (int j = 0; j < kNumCoeffs; ++j)        EXPECT_EQ(output_block[j], output_ref_block[j]);    }  }   void RunMemCheck() {    ACMRandom rnd(ACMRandom::DeterministicSeed());    const int count_test_block = 1000;    DECLARE_ALIGNED(16, int16_t, input_extreme_block[kNumCoeffs]);    DECLARE_ALIGNED(16, tran_low_t, output_ref_block[kNumCoeffs]);    DECLARE_ALIGNED(16, tran_low_t, output_block[kNumCoeffs]);     for (int i = 0; i < count_test_block; ++i) {      // Initialize a test block with input range [-mask_, mask_].      for (int j = 0; j < kNumCoeffs; ++j) {        input_extreme_block[j] = rnd.Rand8() % 2 ? mask_ : -mask_;      }      if (i == 0) {        for (int j = 0; j < kNumCoeffs; ++j) input_extreme_block[j] = mask_;      } else if (i == 1) {        for (int j = 0; j < kNumCoeffs; ++j) input_extreme_block[j] = -mask_;      }       fwd_txfm_ref(input_extreme_block, output_ref_block, pitch_, tx_type_);      ASM_REGISTER_STATE_CHECK(          RunFwdTxfm(input_extreme_block, output_block, pitch_));       // The minimum quant value is 4.      for (int j = 0; j < kNumCoeffs; ++j) {        EXPECT_EQ(output_block[j], output_ref_block[j]);        EXPECT_GE(4 * DCT_MAX_VALUE << (bit_depth_ - 8), abs(output_block[j]))            << "Error: 16x16 FDCT has coefficient larger than 4*DCT_MAX_VALUE";      }    }  }   void RunQuantCheck(int dc_thred, int ac_thred) {    ACMRandom rnd(ACMRandom::DeterministicSeed());    const int count_test_block = 100000;    DECLARE_ALIGNED(16, int16_t, input_extreme_block[kNumCoeffs]);    DECLARE_ALIGNED(16, tran_low_t, output_ref_block[kNumCoeffs]);     DECLARE_ALIGNED(16, uint8_t, dst[kNumCoeffs]);    DECLARE_ALIGNED(16, uint8_t, ref[kNumCoeffs]);#if CONFIG_VP9_HIGHBITDEPTH    DECLARE_ALIGNED(16, uint16_t, dst16[kNumCoeffs]);    DECLARE_ALIGNED(16, uint16_t, ref16[kNumCoeffs]);#endif     for (int i = 0; i < count_test_block; ++i) {      // Initialize a test block with input range [-mask_, mask_].      for (int j = 0; j < kNumCoeffs; ++j) {        input_extreme_block[j] = rnd.Rand8() % 2 ? mask_ : -mask_;      }      if (i == 0) {        for (int j = 0; j < kNumCoeffs; ++j) input_extreme_block[j] = mask_;      }      if (i == 1) {        for (int j = 0; j < kNumCoeffs; ++j) input_extreme_block[j] = -mask_;      }       fwd_txfm_ref(input_extreme_block, output_ref_block, pitch_, tx_type_);       // clear reconstructed pixel buffers      memset(dst, 0, kNumCoeffs * sizeof(uint8_t));      memset(ref, 0, kNumCoeffs * sizeof(uint8_t));#if CONFIG_VP9_HIGHBITDEPTH      memset(dst16, 0, kNumCoeffs * sizeof(uint16_t));      memset(ref16, 0, kNumCoeffs * sizeof(uint16_t));#endif       // quantization with maximum allowed step sizes      output_ref_block[0] = (output_ref_block[0] / dc_thred) * dc_thred;      for (int j = 1; j < kNumCoeffs; ++j) {        output_ref_block[j] = (output_ref_block[j] / ac_thred) * ac_thred;      }      if (bit_depth_ == VPX_BITS_8) {        inv_txfm_ref(output_ref_block, ref, pitch_, tx_type_);        ASM_REGISTER_STATE_CHECK(RunInvTxfm(output_ref_block, dst, pitch_));#if CONFIG_VP9_HIGHBITDEPTH      } else {        inv_txfm_ref(output_ref_block, CAST_TO_BYTEPTR(ref16), pitch_,                     tx_type_);        ASM_REGISTER_STATE_CHECK(            RunInvTxfm(output_ref_block, CAST_TO_BYTEPTR(dst16), pitch_));#endif      }      if (bit_depth_ == VPX_BITS_8) {        for (int j = 0; j < kNumCoeffs; ++j) EXPECT_EQ(ref[j], dst[j]);#if CONFIG_VP9_HIGHBITDEPTH      } else {        for (int j = 0; j < kNumCoeffs; ++j) EXPECT_EQ(ref16[j], dst16[j]);#endif      }    }  }   void RunInvAccuracyCheck() {    ACMRandom rnd(ACMRandom::DeterministicSeed());    const int count_test_block = 1000;    DECLARE_ALIGNED(16, int16_t, in[kNumCoeffs]);    DECLARE_ALIGNED(16, tran_low_t, coeff[kNumCoeffs]);    DECLARE_ALIGNED(16, uint8_t, dst[kNumCoeffs]);    DECLARE_ALIGNED(16, uint8_t, src[kNumCoeffs]);

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