Move libvpx from DEPS to src

third_party/libvpx/source/libvpx/test/dct16x16_test.cc

Index: third_party/libvpx/source/libvpx/test/dct16x16_test.cc
diff --git a/third_party/libvpx/source/libvpx/test/dct16x16_test.cc b/third_party/libvpx/source/libvpx/test/dct16x16_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..587b27ac87e339ae249d0dec5c798f48e07acaad
--- /dev/null
+++ b/third_party/libvpx/source/libvpx/test/dct16x16_test.cc
@@ -0,0 +1,944 @@
+/*
+ *  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 "third_party/googletest/src/include/gtest/gtest.h"
+#include "test/acm_random.h"
+#include "test/clear_system_state.h"
+#include "test/register_state_check.h"
+#include "test/util.h"
+
+#include "./vp9_rtcd.h"
+#include "vp9/common/vp9_entropy.h"
+#include "vpx/vpx_codec.h"
+#include "vpx/vpx_integer.h"
+
+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
+
+const int kNumCoeffs = 256;
+const double PI = 3.1415926535898;
+void reference2_16x16_idct_2d(double *input, double *output) {
+  double x;
+  for (int l = 0; l < 16; ++l) {
+    for (int k = 0; k < 16; ++k) {
+      double s = 0;
+      for (int i = 0; i < 16; ++i) {
+        for (int j = 0; j < 16; ++j) {
+          x = cos(PI * j * (l + 0.5) / 16.0) *
+              cos(PI * i * (k + 0.5) / 16.0) *
+              input[i * 16 + j] / 256;
+          if (i != 0)
+            x *= sqrt(2.0);
+          if (j != 0)
+            x *= sqrt(2.0);
+          s += x;
+        }
+      }
+      output[k*16+l] = s;
+    }
+  }
+}
+
+
+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::tr1::tuple<FdctFunc, IdctFunc, int, vpx_bit_depth_t> Dct16x16Param;
+typedef std::tr1::tuple<FhtFunc, IhtFunc, int, vpx_bit_depth_t> Ht16x16Param;
+typedef std::tr1::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*/) {
+  vp9_fdct16x16_c(in, out, stride);
+}
+
+void idct16x16_ref(const tran_low_t *in, uint8_t *dest, int stride,
+                   int /*tx_type*/) {
+  vp9_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_HIGHBITDEPTH
+void idct16x16_10(const tran_low_t *in, uint8_t *out, int stride) {
+  vp9_highbd_idct16x16_256_add_c(in, out, stride, 10);
+}
+
+void idct16x16_12(const tran_low_t *in, uint8_t *out, int stride) {
+  vp9_highbd_idct16x16_256_add_c(in, 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, 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, out, stride, tx_type, 12);
+}
+
+void idct16x16_10_add_10_c(const tran_low_t *in, uint8_t *out, int stride) {
+  vp9_highbd_idct16x16_10_add_c(in, out, stride, 10);
+}
+
+void idct16x16_10_add_12_c(const tran_low_t *in, uint8_t *out, int stride) {
+  vp9_highbd_idct16x16_10_add_c(in, out, stride, 12);
+}
+
+#if HAVE_SSE2
+void idct16x16_256_add_10_sse2(const tran_low_t *in, uint8_t *out, int stride) {
+  vp9_highbd_idct16x16_256_add_sse2(in, out, stride, 10);
+}
+
+void idct16x16_256_add_12_sse2(const tran_low_t *in, uint8_t *out, int stride) {
+  vp9_highbd_idct16x16_256_add_sse2(in, out, stride, 12);
+}
+
+void idct16x16_10_add_10_sse2(const tran_low_t *in, uint8_t *out, int stride) {
+  vp9_highbd_idct16x16_10_add_sse2(in, out, stride, 10);
+}
+
+void idct16x16_10_add_12_sse2(const tran_low_t *in, uint8_t *out, int stride) {
+  vp9_highbd_idct16x16_10_add_sse2(in, 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, CONVERT_TO_BYTEPTR(dst16), pitch_));
+#endif
+      }
+
+      for (int j = 0; j < kNumCoeffs; ++j) {
+#if CONFIG_VP9_HIGHBITDEPTH
+        const uint32_t diff =
+            bit_depth_ == VPX_BITS_8 ?  dst[j] - src[j] : dst16[j] - src16[j];
+#else
+        const uint32_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, CONVERT_TO_BYTEPTR(ref16), pitch_,
+                     tx_type_);
+        ASM_REGISTER_STATE_CHECK(RunInvTxfm(output_ref_block,
+                                            CONVERT_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]);
+#if CONFIG_VP9_HIGHBITDEPTH
+    DECLARE_ALIGNED(16, uint16_t, dst16[kNumCoeffs]);
+    DECLARE_ALIGNED(16, uint16_t, src16[kNumCoeffs]);
+#endif  // CONFIG_VP9_HIGHBITDEPTH
+
+    for (int i = 0; i < count_test_block; ++i) {
+      double out_r[kNumCoeffs];
+
+      // Initialize a test block with input range [-255, 255].
+      for (int j = 0; j < kNumCoeffs; ++j) {
+        if (bit_depth_ == VPX_BITS_8) {
+          src[j] = rnd.Rand8();
+          dst[j] = rnd.Rand8();
+          in[j] = src[j] - dst[j];
+#if CONFIG_VP9_HIGHBITDEPTH
+        } else {
+          src16[j] = rnd.Rand16() & mask_;
+          dst16[j] = rnd.Rand16() & mask_;
+          in[j] = src16[j] - dst16[j];
+#endif  // CONFIG_VP9_HIGHBITDEPTH
+        }
+      }
+
+      reference_16x16_dct_2d(in, out_r);
+      for (int j = 0; j < kNumCoeffs; ++j)
+        coeff[j] = static_cast<tran_low_t>(round(out_r[j]));
+
+      if (bit_depth_ == VPX_BITS_8) {
+        ASM_REGISTER_STATE_CHECK(RunInvTxfm(coeff, dst, 16));
+#if CONFIG_VP9_HIGHBITDEPTH
+      } else {
+        ASM_REGISTER_STATE_CHECK(RunInvTxfm(coeff, CONVERT_TO_BYTEPTR(dst16),
+                                            16));
+#endif  // CONFIG_VP9_HIGHBITDEPTH
+      }
+
+      for (int j = 0; j < kNumCoeffs; ++j) {
+#if CONFIG_VP9_HIGHBITDEPTH
+        const uint32_t diff =
+            bit_depth_ == VPX_BITS_8 ? dst[j] - src[j] : dst16[j] - src16[j];
+#else
+        const uint32_t diff = dst[j] - src[j];
+#endif  // CONFIG_VP9_HIGHBITDEPTH
+        const uint32_t error = diff * diff;
+        EXPECT_GE(1u, error)
+            << "Error: 16x16 IDCT has error " << error
+            << " at index " << j;
+      }
+    }
+  }
+
+  void CompareInvReference(IdctFunc ref_txfm, int thresh) {
+    ACMRandom rnd(ACMRandom::DeterministicSeed());
+    const int count_test_block = 10000;
+    const int eob = 10;
+    const int16_t *scan = vp9_default_scan_orders[TX_16X16].scan;
+    DECLARE_ALIGNED(16, tran_low_t, coeff[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  // CONFIG_VP9_HIGHBITDEPTH
+
+    for (int i = 0; i < count_test_block; ++i) {
+      for (int j = 0; j < kNumCoeffs; ++j) {
+        if (j < eob) {
+          // Random values less than the threshold, either positive or negative
+          coeff[scan[j]] = rnd(thresh) * (1 - 2 * (i % 2));
+        } else {
+          coeff[scan[j]] = 0;
+        }
+        if (bit_depth_ == VPX_BITS_8) {
+          dst[j] = 0;
+          ref[j] = 0;
+#if CONFIG_VP9_HIGHBITDEPTH
+        } else {
+          dst16[j] = 0;
+          ref16[j] = 0;
+#endif  // CONFIG_VP9_HIGHBITDEPTH
+        }
+      }
+      if (bit_depth_ == VPX_BITS_8) {
+        ref_txfm(coeff, ref, pitch_);
+        ASM_REGISTER_STATE_CHECK(RunInvTxfm(coeff, dst, pitch_));
+      } else {
+#if CONFIG_VP9_HIGHBITDEPTH
+        ref_txfm(coeff, CONVERT_TO_BYTEPTR(ref16), pitch_);
+        ASM_REGISTER_STATE_CHECK(RunInvTxfm(coeff, CONVERT_TO_BYTEPTR(dst16),
+                                 pitch_));
+#endif  // CONFIG_VP9_HIGHBITDEPTH
+      }
+
+      for (int j = 0; j < kNumCoeffs; ++j) {
+#if CONFIG_VP9_HIGHBITDEPTH
+        const uint32_t diff =
+            bit_depth_ == VPX_BITS_8 ? dst[j] - ref[j] : dst16[j] - ref16[j];
+#else
+        const uint32_t diff = dst[j] - ref[j];
+#endif  // CONFIG_VP9_HIGHBITDEPTH
+        const uint32_t error = diff * diff;
+        EXPECT_EQ(0u, error)
+            << "Error: 16x16 IDCT Comparison has error " << error
+            << " at index " << j;
+      }
+    }
+  }
+
+  int pitch_;
+  int tx_type_;
+  vpx_bit_depth_t bit_depth_;
+  int mask_;
+  FhtFunc fwd_txfm_ref;
+  IhtFunc inv_txfm_ref;
+};
+
+class Trans16x16DCT
+    : public Trans16x16TestBase,
+      public ::testing::TestWithParam<Dct16x16Param> {
+ public:
+  virtual ~Trans16x16DCT() {}
+
+  virtual void SetUp() {
+    fwd_txfm_ = GET_PARAM(0);
+    inv_txfm_ = GET_PARAM(1);
+    tx_type_  = GET_PARAM(2);
+    bit_depth_ = GET_PARAM(3);
+    pitch_    = 16;
+    fwd_txfm_ref = fdct16x16_ref;
+    inv_txfm_ref = idct16x16_ref;
+    mask_ = (1 << bit_depth_) - 1;
+#if CONFIG_VP9_HIGHBITDEPTH
+    switch (bit_depth_) {
+      case VPX_BITS_10:
+        inv_txfm_ref = idct16x16_10_ref;
+        break;
+      case VPX_BITS_12:
+        inv_txfm_ref = idct16x16_12_ref;
+        break;
+      default:
+        inv_txfm_ref = idct16x16_ref;
+        break;
+    }
+#else
+    inv_txfm_ref = idct16x16_ref;
+#endif
+  }
+  virtual void TearDown() { libvpx_test::ClearSystemState(); }
+
+ protected:
+  void RunFwdTxfm(int16_t *in, tran_low_t *out, int stride) {
+    fwd_txfm_(in, out, stride);
+  }
+  void RunInvTxfm(tran_low_t *out, uint8_t *dst, int stride) {
+    inv_txfm_(out, dst, stride);
+  }
+
+  FdctFunc fwd_txfm_;
+  IdctFunc inv_txfm_;
+};
+
+TEST_P(Trans16x16DCT, AccuracyCheck) {
+  RunAccuracyCheck();
+}
+
+TEST_P(Trans16x16DCT, CoeffCheck) {
+  RunCoeffCheck();
+}
+
+TEST_P(Trans16x16DCT, MemCheck) {
+  RunMemCheck();
+}
+
+TEST_P(Trans16x16DCT, QuantCheck) {
+  // Use maximally allowed quantization step sizes for DC and AC
+  // coefficients respectively.
+  RunQuantCheck(1336, 1828);
+}
+
+TEST_P(Trans16x16DCT, InvAccuracyCheck) {
+  RunInvAccuracyCheck();
+}
+
+class Trans16x16HT
+    : public Trans16x16TestBase,
+      public ::testing::TestWithParam<Ht16x16Param> {
+ public:
+  virtual ~Trans16x16HT() {}
+
+  virtual void SetUp() {
+    fwd_txfm_ = GET_PARAM(0);
+    inv_txfm_ = GET_PARAM(1);
+    tx_type_  = GET_PARAM(2);
+    bit_depth_ = GET_PARAM(3);
+    pitch_    = 16;
+    fwd_txfm_ref = fht16x16_ref;
+    inv_txfm_ref = iht16x16_ref;
+    mask_ = (1 << bit_depth_) - 1;
+#if CONFIG_VP9_HIGHBITDEPTH
+    switch (bit_depth_) {
+      case VPX_BITS_10:
+        inv_txfm_ref = iht16x16_10;
+        break;
+      case VPX_BITS_12:
+        inv_txfm_ref = iht16x16_12;
+        break;
+      default:
+        inv_txfm_ref = iht16x16_ref;
+        break;
+    }
+#else
+    inv_txfm_ref = iht16x16_ref;
+#endif
+  }
+  virtual void TearDown() { libvpx_test::ClearSystemState(); }
+
+ protected:
+  void RunFwdTxfm(int16_t *in, tran_low_t *out, int stride) {
+    fwd_txfm_(in, out, stride, tx_type_);
+  }
+  void RunInvTxfm(tran_low_t *out, uint8_t *dst, int stride) {
+    inv_txfm_(out, dst, stride, tx_type_);
+  }
+
+  FhtFunc fwd_txfm_;
+  IhtFunc inv_txfm_;
+};
+
+TEST_P(Trans16x16HT, AccuracyCheck) {
+  RunAccuracyCheck();
+}
+
+TEST_P(Trans16x16HT, CoeffCheck) {
+  RunCoeffCheck();
+}
+
+TEST_P(Trans16x16HT, MemCheck) {
+  RunMemCheck();
+}
+
+TEST_P(Trans16x16HT, QuantCheck) {
+  // The encoder skips any non-DC intra prediction modes,
+  // when the quantization step size goes beyond 988.
+  RunQuantCheck(429, 729);
+}
+
+class InvTrans16x16DCT
+    : public Trans16x16TestBase,
+      public ::testing::TestWithParam<Idct16x16Param> {
+ public:
+  virtual ~InvTrans16x16DCT() {}
+
+  virtual void SetUp() {
+    ref_txfm_ = GET_PARAM(0);
+    inv_txfm_ = GET_PARAM(1);
+    thresh_ = GET_PARAM(2);
+    bit_depth_ = GET_PARAM(3);
+    pitch_ = 16;
+    mask_ = (1 << bit_depth_) - 1;
+}
+  virtual void TearDown() { libvpx_test::ClearSystemState(); }
+
+ protected:
+  void RunFwdTxfm(int16_t *in, tran_low_t *out, int stride) {}
+  void RunInvTxfm(tran_low_t *out, uint8_t *dst, int stride) {
+    inv_txfm_(out, dst, stride);
+  }
+
+  IdctFunc ref_txfm_;
+  IdctFunc inv_txfm_;
+  int thresh_;
+};
+
+TEST_P(InvTrans16x16DCT, CompareReference) {
+  CompareInvReference(ref_txfm_, thresh_);
+}
+
+using std::tr1::make_tuple;
+
+#if CONFIG_VP9_HIGHBITDEPTH
+INSTANTIATE_TEST_CASE_P(
+    C, Trans16x16DCT,
+    ::testing::Values(
+        make_tuple(&vp9_highbd_fdct16x16_c, &idct16x16_10, 0, VPX_BITS_10),
+        make_tuple(&vp9_highbd_fdct16x16_c, &idct16x16_12, 0, VPX_BITS_12),
+        make_tuple(&vp9_fdct16x16_c, &vp9_idct16x16_256_add_c, 0, VPX_BITS_8)));
+#else
+INSTANTIATE_TEST_CASE_P(
+    C, Trans16x16DCT,
+    ::testing::Values(
+        make_tuple(&vp9_fdct16x16_c, &vp9_idct16x16_256_add_c, 0, VPX_BITS_8)));
+#endif  // CONFIG_VP9_HIGHBITDEPTH
+
+#if CONFIG_VP9_HIGHBITDEPTH
+INSTANTIATE_TEST_CASE_P(
+    C, Trans16x16HT,
+    ::testing::Values(
+        make_tuple(&vp9_highbd_fht16x16_c, &iht16x16_10, 0, VPX_BITS_10),
+        make_tuple(&vp9_highbd_fht16x16_c, &iht16x16_10, 1, VPX_BITS_10),
+        make_tuple(&vp9_highbd_fht16x16_c, &iht16x16_10, 2, VPX_BITS_10),
+        make_tuple(&vp9_highbd_fht16x16_c, &iht16x16_10, 3, VPX_BITS_10),
+        make_tuple(&vp9_highbd_fht16x16_c, &iht16x16_12, 0, VPX_BITS_12),
+        make_tuple(&vp9_highbd_fht16x16_c, &iht16x16_12, 1, VPX_BITS_12),
+        make_tuple(&vp9_highbd_fht16x16_c, &iht16x16_12, 2, VPX_BITS_12),
+        make_tuple(&vp9_highbd_fht16x16_c, &iht16x16_12, 3, VPX_BITS_12),
+        make_tuple(&vp9_fht16x16_c, &vp9_iht16x16_256_add_c, 0, VPX_BITS_8),
+        make_tuple(&vp9_fht16x16_c, &vp9_iht16x16_256_add_c, 1, VPX_BITS_8),
+        make_tuple(&vp9_fht16x16_c, &vp9_iht16x16_256_add_c, 2, VPX_BITS_8),
+        make_tuple(&vp9_fht16x16_c, &vp9_iht16x16_256_add_c, 3, VPX_BITS_8)));
+#else
+INSTANTIATE_TEST_CASE_P(
+    C, Trans16x16HT,
+    ::testing::Values(
+        make_tuple(&vp9_fht16x16_c, &vp9_iht16x16_256_add_c, 0, VPX_BITS_8),
+        make_tuple(&vp9_fht16x16_c, &vp9_iht16x16_256_add_c, 1, VPX_BITS_8),
+        make_tuple(&vp9_fht16x16_c, &vp9_iht16x16_256_add_c, 2, VPX_BITS_8),
+        make_tuple(&vp9_fht16x16_c, &vp9_iht16x16_256_add_c, 3, VPX_BITS_8)));
+#endif  // CONFIG_VP9_HIGHBITDEPTH
+
+#if HAVE_NEON_ASM && !CONFIG_VP9_HIGHBITDEPTH && !CONFIG_EMULATE_HARDWARE
+INSTANTIATE_TEST_CASE_P(
+    NEON, Trans16x16DCT,
+    ::testing::Values(
+        make_tuple(&vp9_fdct16x16_c,
+                   &vp9_idct16x16_256_add_neon, 0, VPX_BITS_8)));
+#endif
+
+#if HAVE_SSE2 && !CONFIG_VP9_HIGHBITDEPTH && !CONFIG_EMULATE_HARDWARE
+INSTANTIATE_TEST_CASE_P(
+    SSE2, Trans16x16DCT,
+    ::testing::Values(
+        make_tuple(&vp9_fdct16x16_sse2,
+                   &vp9_idct16x16_256_add_sse2, 0, VPX_BITS_8)));
+INSTANTIATE_TEST_CASE_P(
+    SSE2, Trans16x16HT,
+    ::testing::Values(
+        make_tuple(&vp9_fht16x16_sse2, &vp9_iht16x16_256_add_sse2, 0,
+                   VPX_BITS_8),
+        make_tuple(&vp9_fht16x16_sse2, &vp9_iht16x16_256_add_sse2, 1,
+                   VPX_BITS_8),
+        make_tuple(&vp9_fht16x16_sse2, &vp9_iht16x16_256_add_sse2, 2,
+                   VPX_BITS_8),
+        make_tuple(&vp9_fht16x16_sse2, &vp9_iht16x16_256_add_sse2, 3,
+                   VPX_BITS_8)));
+#endif  // HAVE_SSE2 && !CONFIG_VP9_HIGHBITDEPTH && !CONFIG_EMULATE_HARDWARE
+
+#if HAVE_SSE2 && CONFIG_VP9_HIGHBITDEPTH && !CONFIG_EMULATE_HARDWARE
+INSTANTIATE_TEST_CASE_P(
+    SSE2, Trans16x16DCT,
+    ::testing::Values(
+        make_tuple(&vp9_highbd_fdct16x16_sse2,
+                   &idct16x16_10, 0, VPX_BITS_10),
+        make_tuple(&vp9_highbd_fdct16x16_c,
+                   &idct16x16_256_add_10_sse2, 0, VPX_BITS_10),
+        make_tuple(&vp9_highbd_fdct16x16_sse2,
+                   &idct16x16_12, 0, VPX_BITS_12),
+        make_tuple(&vp9_highbd_fdct16x16_c,
+                   &idct16x16_256_add_12_sse2, 0, VPX_BITS_12),
+        make_tuple(&vp9_fdct16x16_sse2,
+                   &vp9_idct16x16_256_add_c, 0, VPX_BITS_8)));
+INSTANTIATE_TEST_CASE_P(
+    SSE2, Trans16x16HT,
+    ::testing::Values(
+        make_tuple(&vp9_highbd_fht16x16_sse2, &iht16x16_10, 0, VPX_BITS_10),
+        make_tuple(&vp9_highbd_fht16x16_sse2, &iht16x16_10, 1, VPX_BITS_10),
+        make_tuple(&vp9_highbd_fht16x16_sse2, &iht16x16_10, 2, VPX_BITS_10),
+        make_tuple(&vp9_highbd_fht16x16_sse2, &iht16x16_10, 3, VPX_BITS_10),
+        make_tuple(&vp9_highbd_fht16x16_sse2, &iht16x16_12, 0, VPX_BITS_12),
+        make_tuple(&vp9_highbd_fht16x16_sse2, &iht16x16_12, 1, VPX_BITS_12),
+        make_tuple(&vp9_highbd_fht16x16_sse2, &iht16x16_12, 2, VPX_BITS_12),
+        make_tuple(&vp9_highbd_fht16x16_sse2, &iht16x16_12, 3, VPX_BITS_12),
+        make_tuple(&vp9_fht16x16_sse2, &vp9_iht16x16_256_add_c, 0, VPX_BITS_8),
+        make_tuple(&vp9_fht16x16_sse2, &vp9_iht16x16_256_add_c, 1, VPX_BITS_8),
+        make_tuple(&vp9_fht16x16_sse2, &vp9_iht16x16_256_add_c, 2, VPX_BITS_8),
+        make_tuple(&vp9_fht16x16_sse2, &vp9_iht16x16_256_add_c, 3,
+                   VPX_BITS_8)));
+// Optimizations take effect at a threshold of 3155, so we use a value close to
+// that to test both branches.
+INSTANTIATE_TEST_CASE_P(
+    SSE2, InvTrans16x16DCT,
+    ::testing::Values(
+        make_tuple(&idct16x16_10_add_10_c,
+                   &idct16x16_10_add_10_sse2, 3167, VPX_BITS_10),
+        make_tuple(&idct16x16_10,
+                   &idct16x16_256_add_10_sse2, 3167, VPX_BITS_10),
+        make_tuple(&idct16x16_10_add_12_c,
+                   &idct16x16_10_add_12_sse2, 3167, VPX_BITS_12),
+        make_tuple(&idct16x16_12,
+                   &idct16x16_256_add_12_sse2, 3167, VPX_BITS_12)));
+#endif  // HAVE_SSE2 && CONFIG_VP9_HIGHBITDEPTH && !CONFIG_EMULATE_HARDWARE
+
+#if HAVE_MSA && !CONFIG_VP9_HIGHBITDEPTH && !CONFIG_EMULATE_HARDWARE
+INSTANTIATE_TEST_CASE_P(
+    MSA, Trans16x16DCT,
+    ::testing::Values(
+        make_tuple(&vp9_fdct16x16_c,
+                   &vp9_idct16x16_256_add_msa, 0, VPX_BITS_8)));
+INSTANTIATE_TEST_CASE_P(
+    MSA, Trans16x16HT,
+    ::testing::Values(
+        make_tuple(&vp9_fht16x16_c, &vp9_iht16x16_256_add_msa, 0, VPX_BITS_8),
+        make_tuple(&vp9_fht16x16_c, &vp9_iht16x16_256_add_msa, 1, VPX_BITS_8),
+        make_tuple(&vp9_fht16x16_c, &vp9_iht16x16_256_add_msa, 2, VPX_BITS_8),
+        make_tuple(&vp9_fht16x16_c, &vp9_iht16x16_256_add_msa, 3, VPX_BITS_8)));
+#endif  // HAVE_MSA && !CONFIG_VP9_HIGHBITDEPTH && !CONFIG_EMULATE_HARDWARE
+}  // namespace