Import aom library

This is the reference implementation for the Alliance for Open Media's av1 video code.

The commit used was 4d668d7feb1f8abd809d1bca0418570a7f142a36.

1 files changed, 438 insertions, 0 deletions

diff --git a/third_party/aom/test/dct32x32_test.cc b/third_party/aom/test/dct32x32_test.cc
new file mode 100644
index 000000000..7c1db6501
--- /dev/null
+++ b/third_party/aom/test/dct32x32_test.cc
@@ -0,0 +1,438 @@
+/*
+ * Copyright (c) 2016, Alliance for Open Media. All rights reserved
+ *
+ * This source code is subject to the terms of the BSD 2 Clause License and
+ * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
+ * was not distributed with this source code in the LICENSE file, you can
+ * obtain it at www.aomedia.org/license/software. If the Alliance for Open
+ * Media Patent License 1.0 was not distributed with this source code in the
+ * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
+*/
+
+#include <math.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "third_party/googletest/src/googletest/include/gtest/gtest.h"
+
+#include "./av1_rtcd.h"
+#include "./aom_config.h"
+#include "./aom_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 "av1/common/entropy.h"
+#include "aom/aom_codec.h"
+#include "aom/aom_integer.h"
+#include "aom_ports/mem.h"
+#include "aom_ports/msvc.h"  // for round()
+
+using libaom_test::ACMRandom;
+
+namespace {
+
+const int kNumCoeffs = 1024;
+const double kPi = 3.141592653589793238462643383279502884;
+void reference_32x32_dct_1d(const double in[32], double out[32]) {
+  const double kInvSqrt2 = 0.707106781186547524400844362104;
+  for (int k = 0; k < 32; k++) {
+    out[k] = 0.0;
+    for (int n = 0; n < 32; n++)
+      out[k] += in[n] * cos(kPi * (2 * n + 1) * k / 64.0);
+    if (k == 0) out[k] = out[k] * kInvSqrt2;
+  }
+}
+
+void reference_32x32_dct_2d(const int16_t input[kNumCoeffs],
+                            double output[kNumCoeffs]) {
+  // First transform columns
+  for (int i = 0; i < 32; ++i) {
+    double temp_in[32], temp_out[32];
+    for (int j = 0; j < 32; ++j) temp_in[j] = input[j * 32 + i];
+    reference_32x32_dct_1d(temp_in, temp_out);
+    for (int j = 0; j < 32; ++j) output[j * 32 + i] = temp_out[j];
+  }
+  // Then transform rows
+  for (int i = 0; i < 32; ++i) {
+    double temp_in[32], temp_out[32];
+    for (int j = 0; j < 32; ++j) temp_in[j] = output[j + i * 32];
+    reference_32x32_dct_1d(temp_in, temp_out);
+    // Scale by some magic number
+    for (int j = 0; j < 32; ++j) output[j + i * 32] = temp_out[j] / 4;
+  }
+}
+
+typedef void (*FwdTxfmFunc)(const int16_t *in, tran_low_t *out, int stride);
+typedef void (*InvTxfmFunc)(const tran_low_t *in, uint8_t *out, int stride);
+
+typedef std::tr1::tuple<FwdTxfmFunc, InvTxfmFunc, int, aom_bit_depth_t>
+    Trans32x32Param;
+
+class Trans32x32Test : public ::testing::TestWithParam<Trans32x32Param> {
+ public:
+  virtual ~Trans32x32Test() {}
+  virtual void SetUp() {
+    fwd_txfm_ = GET_PARAM(0);
+    inv_txfm_ = GET_PARAM(1);
+    version_ = GET_PARAM(2);  // 0: high precision forward transform
+                              // 1: low precision version for rd loop
+    bit_depth_ = GET_PARAM(3);
+    mask_ = (1 << bit_depth_) - 1;
+  }
+
+  virtual void TearDown() { libaom_test::ClearSystemState(); }
+
+ protected:
+  int version_;
+  aom_bit_depth_t bit_depth_;
+  int mask_;
+  FwdTxfmFunc fwd_txfm_;
+  InvTxfmFunc inv_txfm_;
+};
+
+TEST_P(Trans32x32Test, AccuracyCheck) {
+  ACMRandom rnd(ACMRandom::DeterministicSeed());
+  uint32_t max_error = 0;
+  int64_t total_error = 0;
+  const int count_test_block = 10000;
+  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_HIGHBITDEPTH
+  DECLARE_ALIGNED(16, uint16_t, dst16[kNumCoeffs]);
+  DECLARE_ALIGNED(16, uint16_t, src16[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) {
+      if (bit_depth_ == AOM_BITS_8) {
+        src[j] = rnd.Rand8();
+        dst[j] = rnd.Rand8();
+        test_input_block[j] = src[j] - dst[j];
+#if CONFIG_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(fwd_txfm_(test_input_block, test_temp_block, 32));
+    if (bit_depth_ == AOM_BITS_8) {
+      ASM_REGISTER_STATE_CHECK(inv_txfm_(test_temp_block, dst, 32));
+#if CONFIG_HIGHBITDEPTH
+    } else {
+      ASM_REGISTER_STATE_CHECK(
+          inv_txfm_(test_temp_block, CONVERT_TO_BYTEPTR(dst16), 32));
+#endif
+    }
+
+    for (int j = 0; j < kNumCoeffs; ++j) {
+#if CONFIG_HIGHBITDEPTH
+      const int32_t diff =
+          bit_depth_ == AOM_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;
+    }
+  }
+
+  if (version_ == 1) {
+    max_error /= 2;
+    total_error /= 45;
+  }
+
+  EXPECT_GE(1u << 2 * (bit_depth_ - 8), max_error)
+      << "Error: 32x32 FDCT/IDCT has an individual round-trip error > 1";
+
+  EXPECT_GE(count_test_block << 2 * (bit_depth_ - 8), total_error)
+      << "Error: 32x32 FDCT/IDCT has average round-trip error > 1 per block";
+}
+
+TEST_P(Trans32x32Test, CoeffCheck) {
+  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) {
+    for (int j = 0; j < kNumCoeffs; ++j)
+      input_block[j] = (rnd.Rand16() & mask_) - (rnd.Rand16() & mask_);
+
+    const int stride = 32;
+    aom_fdct32x32_c(input_block, output_ref_block, stride);
+    ASM_REGISTER_STATE_CHECK(fwd_txfm_(input_block, output_block, stride));
+
+    if (version_ == 0) {
+      for (int j = 0; j < kNumCoeffs; ++j)
+        EXPECT_EQ(output_block[j], output_ref_block[j])
+            << "Error: 32x32 FDCT versions have mismatched coefficients";
+    } else {
+      for (int j = 0; j < kNumCoeffs; ++j)
+        EXPECT_GE(6, abs(output_block[j] - output_ref_block[j]))
+            << "Error: 32x32 FDCT rd has mismatched coefficients";
+    }
+  }
+}
+
+TEST_P(Trans32x32Test, MemCheck) {
+  ACMRandom rnd(ACMRandom::DeterministicSeed());
+  const int count_test_block = 2000;
+
+  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() & 1 ? 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_;
+    }
+
+    const int stride = 32;
+    aom_fdct32x32_c(input_extreme_block, output_ref_block, stride);
+    ASM_REGISTER_STATE_CHECK(
+        fwd_txfm_(input_extreme_block, output_block, stride));
+
+    // The minimum quant value is 4.
+    for (int j = 0; j < kNumCoeffs; ++j) {
+      if (version_ == 0) {
+        EXPECT_EQ(output_block[j], output_ref_block[j])
+            << "Error: 32x32 FDCT versions have mismatched coefficients";
+      } else {
+        EXPECT_GE(6, abs(output_block[j] - output_ref_block[j]))
+            << "Error: 32x32 FDCT rd has mismatched coefficients";
+      }
+      EXPECT_GE(4 * DCT_MAX_VALUE << (bit_depth_ - 8), abs(output_ref_block[j]))
+          << "Error: 32x32 FDCT C has coefficient larger than 4*DCT_MAX_VALUE";
+      EXPECT_GE(4 * DCT_MAX_VALUE << (bit_depth_ - 8), abs(output_block[j]))
+          << "Error: 32x32 FDCT has coefficient larger than "
+          << "4*DCT_MAX_VALUE";
+    }
+  }
+}
+
+TEST_P(Trans32x32Test, InverseAccuracy) {
+  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_HIGHBITDEPTH
+  DECLARE_ALIGNED(16, uint16_t, dst16[kNumCoeffs]);
+  DECLARE_ALIGNED(16, uint16_t, src16[kNumCoeffs]);
+#endif
+
+  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_ == AOM_BITS_8) {
+        src[j] = rnd.Rand8();
+        dst[j] = rnd.Rand8();
+        in[j] = src[j] - dst[j];
+#if CONFIG_HIGHBITDEPTH
+      } else {
+        src16[j] = rnd.Rand16() & mask_;
+        dst16[j] = rnd.Rand16() & mask_;
+        in[j] = src16[j] - dst16[j];
+#endif
+      }
+    }
+
+    reference_32x32_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_ == AOM_BITS_8) {
+      ASM_REGISTER_STATE_CHECK(inv_txfm_(coeff, dst, 32));
+#if CONFIG_HIGHBITDEPTH
+    } else {
+      ASM_REGISTER_STATE_CHECK(inv_txfm_(coeff, CONVERT_TO_BYTEPTR(dst16), 32));
+#endif
+    }
+    for (int j = 0; j < kNumCoeffs; ++j) {
+#if CONFIG_HIGHBITDEPTH
+      const int diff =
+          bit_depth_ == AOM_BITS_8 ? dst[j] - src[j] : dst16[j] - src16[j];
+#else
+      const int diff = dst[j] - src[j];
+#endif
+      const int error = diff * diff;
+      EXPECT_GE(1, error) << "Error: 32x32 IDCT has error " << error
+                          << " at index " << j;
+    }
+  }
+}
+
+class PartialTrans32x32Test
+    : public ::testing::TestWithParam<
+          std::tr1::tuple<FwdTxfmFunc, aom_bit_depth_t> > {
+ public:
+  virtual ~PartialTrans32x32Test() {}
+  virtual void SetUp() {
+    fwd_txfm_ = GET_PARAM(0);
+    bit_depth_ = GET_PARAM(1);
+  }
+
+  virtual void TearDown() { libaom_test::ClearSystemState(); }
+
+ protected:
+  aom_bit_depth_t bit_depth_;
+  FwdTxfmFunc fwd_txfm_;
+};
+
+TEST_P(PartialTrans32x32Test, Extremes) {
+#if CONFIG_HIGHBITDEPTH
+  const int16_t maxval =
+      static_cast<int16_t>(clip_pixel_highbd(1 << 30, bit_depth_));
+#else
+  const int16_t maxval = 255;
+#endif
+  const int minval = -maxval;
+  DECLARE_ALIGNED(16, int16_t, input[kNumCoeffs]);
+  DECLARE_ALIGNED(16, tran_low_t, output[kNumCoeffs]);
+
+  for (int i = 0; i < kNumCoeffs; ++i) input[i] = maxval;
+  output[0] = 0;
+  ASM_REGISTER_STATE_CHECK(fwd_txfm_(input, output, 32));
+  EXPECT_EQ((maxval * kNumCoeffs) >> 3, output[0]);
+
+  for (int i = 0; i < kNumCoeffs; ++i) input[i] = minval;
+  output[0] = 0;
+  ASM_REGISTER_STATE_CHECK(fwd_txfm_(input, output, 32));
+  EXPECT_EQ((minval * kNumCoeffs) >> 3, output[0]);
+}
+
+TEST_P(PartialTrans32x32Test, Random) {
+#if CONFIG_HIGHBITDEPTH
+  const int16_t maxval =
+      static_cast<int16_t>(clip_pixel_highbd(1 << 30, bit_depth_));
+#else
+  const int16_t maxval = 255;
+#endif
+  DECLARE_ALIGNED(16, int16_t, input[kNumCoeffs]);
+  DECLARE_ALIGNED(16, tran_low_t, output[kNumCoeffs]);
+  ACMRandom rnd(ACMRandom::DeterministicSeed());
+
+  int sum = 0;
+  for (int i = 0; i < kNumCoeffs; ++i) {
+    const int val = (i & 1) ? -rnd(maxval + 1) : rnd(maxval + 1);
+    input[i] = val;
+    sum += val;
+  }
+  output[0] = 0;
+  ASM_REGISTER_STATE_CHECK(fwd_txfm_(input, output, 32));
+  EXPECT_EQ(sum >> 3, output[0]);
+}
+
+using std::tr1::make_tuple;
+
+#if CONFIG_HIGHBITDEPTH
+INSTANTIATE_TEST_CASE_P(
+    C, Trans32x32Test,
+    ::testing::Values(make_tuple(&aom_fdct32x32_c, &aom_idct32x32_1024_add_c, 0,
+                                 AOM_BITS_8),
+                      make_tuple(&aom_fdct32x32_rd_c, &aom_idct32x32_1024_add_c,
+                                 1, AOM_BITS_8)));
+INSTANTIATE_TEST_CASE_P(
+    C, PartialTrans32x32Test,
+    ::testing::Values(make_tuple(&aom_highbd_fdct32x32_1_c, AOM_BITS_8),
+                      make_tuple(&aom_highbd_fdct32x32_1_c, AOM_BITS_10),
+                      make_tuple(&aom_highbd_fdct32x32_1_c, AOM_BITS_12)));
+#else
+INSTANTIATE_TEST_CASE_P(
+    C, Trans32x32Test,
+    ::testing::Values(make_tuple(&aom_fdct32x32_c, &aom_idct32x32_1024_add_c, 0,
+                                 AOM_BITS_8),
+                      make_tuple(&aom_fdct32x32_rd_c, &aom_idct32x32_1024_add_c,
+                                 1, AOM_BITS_8)));
+INSTANTIATE_TEST_CASE_P(C, PartialTrans32x32Test,
+                        ::testing::Values(make_tuple(&aom_fdct32x32_1_c,
+                                                     AOM_BITS_8)));
+#endif  // CONFIG_HIGHBITDEPTH
+
+#if HAVE_NEON && !CONFIG_HIGHBITDEPTH
+INSTANTIATE_TEST_CASE_P(
+    NEON, Trans32x32Test,
+    ::testing::Values(make_tuple(&aom_fdct32x32_c, &aom_idct32x32_1024_add_neon,
+                                 0, AOM_BITS_8),
+                      make_tuple(&aom_fdct32x32_rd_c,
+                                 &aom_idct32x32_1024_add_neon, 1, AOM_BITS_8)));
+#endif  // HAVE_NEON && !CONFIG_HIGHBITDEPTH
+
+#if HAVE_SSE2 && !CONFIG_HIGHBITDEPTH
+INSTANTIATE_TEST_CASE_P(
+    SSE2, Trans32x32Test,
+    ::testing::Values(make_tuple(&aom_fdct32x32_sse2,
+                                 &aom_idct32x32_1024_add_sse2, 0, AOM_BITS_8),
+                      make_tuple(&aom_fdct32x32_rd_sse2,
+                                 &aom_idct32x32_1024_add_sse2, 1, AOM_BITS_8)));
+INSTANTIATE_TEST_CASE_P(SSE2, PartialTrans32x32Test,
+                        ::testing::Values(make_tuple(&aom_fdct32x32_1_sse2,
+                                                     AOM_BITS_8)));
+#endif  // HAVE_SSE2 && !CONFIG_HIGHBITDEPTH
+
+#if HAVE_AVX2 && !CONFIG_HIGHBITDEPTH
+INSTANTIATE_TEST_CASE_P(AVX2, PartialTrans32x32Test,
+                        ::testing::Values(make_tuple(&aom_fdct32x32_1_avx2,
+                                                     AOM_BITS_8)));
+#endif  // HAVE_AVX2 && !CONFIG_HIGHBITDEPTH
+
+#if HAVE_SSE2 && CONFIG_HIGHBITDEPTH
+INSTANTIATE_TEST_CASE_P(
+    SSE2, Trans32x32Test,
+    ::testing::Values(make_tuple(&aom_fdct32x32_sse2, &aom_idct32x32_1024_add_c,
+                                 0, AOM_BITS_8),
+                      make_tuple(&aom_fdct32x32_rd_sse2,
+                                 &aom_idct32x32_1024_add_c, 1, AOM_BITS_8)));
+INSTANTIATE_TEST_CASE_P(SSE2, PartialTrans32x32Test,
+                        ::testing::Values(make_tuple(&aom_fdct32x32_1_sse2,
+                                                     AOM_BITS_8)));
+#endif  // HAVE_SSE2 && CONFIG_HIGHBITDEPTH
+
+#if HAVE_AVX2 && !CONFIG_HIGHBITDEPTH
+INSTANTIATE_TEST_CASE_P(
+    AVX2, Trans32x32Test,
+    ::testing::Values(make_tuple(&aom_fdct32x32_avx2,
+                                 &aom_idct32x32_1024_add_sse2, 0, AOM_BITS_8),
+                      make_tuple(&aom_fdct32x32_rd_avx2,
+                                 &aom_idct32x32_1024_add_sse2, 1, AOM_BITS_8)));
+#endif  // HAVE_AVX2 && !CONFIG_HIGHBITDEPTH
+
+#if HAVE_AVX2 && CONFIG_HIGHBITDEPTH
+INSTANTIATE_TEST_CASE_P(
+    AVX2, Trans32x32Test,
+    ::testing::Values(make_tuple(&aom_fdct32x32_avx2,
+                                 &aom_idct32x32_1024_add_sse2, 0, AOM_BITS_8),
+                      make_tuple(&aom_fdct32x32_rd_avx2,
+                                 &aom_idct32x32_1024_add_sse2, 1, AOM_BITS_8)));
+#endif  // HAVE_AVX2 && CONFIG_HIGHBITDEPTH
+
+#if HAVE_MSA && !CONFIG_HIGHBITDEPTH
+INSTANTIATE_TEST_CASE_P(
+    MSA, Trans32x32Test,
+    ::testing::Values(make_tuple(&aom_fdct32x32_msa,
+                                 &aom_idct32x32_1024_add_msa, 0, AOM_BITS_8),
+                      make_tuple(&aom_fdct32x32_rd_msa,
+                                 &aom_idct32x32_1024_add_msa, 1, AOM_BITS_8)));
+INSTANTIATE_TEST_CASE_P(MSA, PartialTrans32x32Test,
+                        ::testing::Values(make_tuple(&aom_fdct32x32_1_msa,
+                                                     AOM_BITS_8)));
+#endif  // HAVE_MSA && !CONFIG_HIGHBITDEPTH
+}  // namespace