--- /dev/null
+/*
+ * Copyright (c) 2015 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 "test/vp10_txfm_test.h"
+#include "vp10/common/vp10_fwd_txfm1d.h"
+
+using libvpx_test::ACMRandom;
+
+namespace {
+static int txfm_type_num = 2;
+static TYPE_TXFM txfm_type_ls[2] = {TYPE_DCT, TYPE_ADST};
+
+static int txfm_size_num = 4;
+static int txfm_size_ls[4] = {4, 8, 16, 32};
+
+static TxfmFunc fwd_txfm_func_ls[2][4] = {
+ {vp10_fdct4_new, vp10_fdct8_new, vp10_fdct16_new, vp10_fdct32_new},
+ {vp10_fadst4_new, vp10_fadst8_new, vp10_fadst16_new, vp10_fadst32_new}};
+
+// the maximum stage number of fwd/inv 1d dct/adst txfm is 12
+static int8_t cos_bit[12] = {14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14};
+static int8_t range_bit[12] = {32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32};
+
+TEST(vp10_fwd_txfm1d, round_shift) {
+ EXPECT_EQ(round_shift(7, 1), 3);
+ EXPECT_EQ(round_shift(-7, 1), -3);
+
+ EXPECT_EQ(round_shift(7, 2), 2);
+ EXPECT_EQ(round_shift(-7, 2), -2);
+
+ EXPECT_EQ(round_shift(8, 2), 2);
+ EXPECT_EQ(round_shift(-8, 2), -2);
+}
+
+TEST(vp10_fwd_txfm1d, get_max_bit) {
+ int max_bit = get_max_bit(8);
+ EXPECT_EQ(max_bit, 3);
+}
+
+TEST(vp10_fwd_txfm1d, half_btf) {
+ int32_t max = (1 << 15) - 1;
+ int32_t w0 = max;
+ int32_t in0 = max;
+ int32_t w1 = max;
+ int32_t in1 = max;
+ int32_t result_32 = half_btf(w0, in0, w1, in1, 0);
+ int64_t result_64 = (int64_t)w0 * (int64_t)in0 + (int64_t)w1 * (int64_t)in1;
+ EXPECT_EQ(result_32, result_64);
+}
+
+TEST(vp10_fwd_txfm1d, cospi_arr) {
+ for (int i = 0; i < 7; i++) {
+ for (int j = 0; j < 64; j++) {
+ EXPECT_EQ(cospi_arr[i][j],
+ (int32_t)round(cos(M_PI * j / 128) * (1 << (cos_bit_min + i))));
+ }
+ }
+}
+
+TEST(vp10_fwd_txfm1d, clamp_block) {
+ int16_t block[5][5] = {{7, -5, 6, -3, 9},
+ {7, -5, 6, -3, 9},
+ {7, -5, 6, -3, 9},
+ {7, -5, 6, -3, 9},
+ {7, -5, 6, -3, 9}};
+
+ int16_t ref_block[5][5] = {{7, -5, 6, -3, 9},
+ {7, -5, 6, -3, 9},
+ {7, -4, 2, -3, 9},
+ {7, -4, 2, -3, 9},
+ {7, -4, 2, -3, 9}};
+
+ int row = 2;
+ int col = 1;
+ int block_size = 3;
+ int stride = 5;
+ clamp_block(block[row] + col, block_size, stride, -4, 2);
+ for (int r = 0; r < stride; r++) {
+ for (int c = 0; c < stride; c++) {
+ EXPECT_EQ(block[r][c], ref_block[r][c]);
+ }
+ }
+}
+
+TEST(vp10_fwd_txfm1d, accuracy) {
+ ACMRandom rnd(ACMRandom::DeterministicSeed());
+ for (int si = 0; si < txfm_size_num; ++si) {
+ int txfm_size = txfm_size_ls[si];
+ int32_t *input = new int32_t[txfm_size];
+ int32_t *output = new int32_t[txfm_size];
+ double *ref_input = new double[txfm_size];
+ double *ref_output = new double[txfm_size];
+
+ for (int ti = 0; ti < txfm_type_num; ++ti) {
+ TYPE_TXFM txfm_type = txfm_type_ls[ti];
+ TxfmFunc fwd_txfm_func = fwd_txfm_func_ls[ti][si];
+ int max_error = 7;
+
+ const int count_test_block = 5000;
+ for (int ti = 0; ti < count_test_block; ++ti) {
+ for (int ni = 0; ni < txfm_size; ++ni) {
+ input[ni] = rnd.Rand16() % base - rnd.Rand16() % base;
+ ref_input[ni] = static_cast<double>(input[ni]);
+ }
+
+ fwd_txfm_func(input, output, cos_bit, range_bit);
+ reference_hybrid_1d(ref_input, ref_output, txfm_size, txfm_type);
+
+ for (int ni = 0; ni < txfm_size; ++ni) {
+ EXPECT_LE(
+ abs(output[ni] - static_cast<int32_t>(round(ref_output[ni]))),
+ max_error);
+ }
+ }
+ }
+
+ delete[] input;
+ delete[] output;
+ delete[] ref_input;
+ delete[] ref_output;
+ }
+}
+} // namespace
--- /dev/null
+/*
+ * Copyright (c) 2015 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.
+ */
+
+#ifndef VP10_TXFM_TEST_H_
+#define VP10_TXFM_TEST_H_
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+
+#include "third_party/googletest/src/include/gtest/gtest.h"
+
+#include "test/acm_random.h"
+#include "vp10/common/vp10_txfm.h"
+
+typedef enum {
+ TYPE_DCT = 0,
+ TYPE_ADST,
+ TYPE_IDCT,
+ TYPE_IADST,
+ TYPE_LAST
+} TYPE_TXFM;
+
+static double invSqrt2 = 1 / pow(2, 0.5);
+
+static void reference_dct_1d(const double* in, double* out, int size) {
+ for (int k = 0; k < size; ++k) {
+ out[k] = 0;
+ for (int n = 0; n < size; ++n) {
+ out[k] += in[n] * cos(M_PI * (2 * n + 1) * k / (2 * size));
+ }
+ if (k == 0) out[k] = out[k] * invSqrt2;
+ }
+}
+
+static void reference_adst_1d(const double* in, double* out, int size) {
+ for (int k = 0; k < size; ++k) {
+ out[k] = 0;
+ for (int n = 0; n < size; ++n) {
+ out[k] += in[n] * sin(M_PI * (2 * n + 1) * (2 * k + 1) / (4 * size));
+ }
+ }
+}
+
+static void reference_hybrid_1d(double* in, double* out, int size, int type) {
+ if (type == TYPE_DCT)
+ reference_dct_1d(in, out, size);
+ else
+ reference_adst_1d(in, out, size);
+}
+
+static void reference_hybrid_2d(double* in, double* out, int size, int type0,
+ int type1) {
+ double* tempOut = new double[size * size];
+
+ for (int r = 0; r < size; r++) {
+ // out ->tempOut
+ for (int c = 0; c < size; c++) {
+ tempOut[r * size + c] = in[c * size + r];
+ }
+ }
+
+ // dct each row: in -> out
+ for (int r = 0; r < size; r++) {
+ reference_hybrid_1d(tempOut + r * size, out + r * size, size, type0);
+ }
+
+ for (int r = 0; r < size; r++) {
+ // out ->tempOut
+ for (int c = 0; c < size; c++) {
+ tempOut[r * size + c] = out[c * size + r];
+ }
+ }
+
+ for (int r = 0; r < size; r++) {
+ reference_hybrid_1d(tempOut + r * size, out + r * size, size, type1);
+ }
+ delete[] tempOut;
+}
+
+template <typename Type1, typename Type2>
+static double compute_avg_abs_error(const Type1* a, const Type2* b,
+ const int size) {
+ double error = 0;
+ for (int i = 0; i < size; i++) {
+ error += fabs(static_cast<double>(a[i]) - static_cast<double>(b[i]));
+ }
+ error = error / size;
+ return error;
+}
+
+typedef void (*TxfmFunc)(const int32_t* in, int32_t* out, const int8_t* cos_bit,
+ const int8_t* range_bit);
+
+typedef void (*Fwd_Txfm2d_Func)(const int16_t*, int32_t*, const int,
+ const TXFM_2D_CFG*, const int);
+typedef void (*Inv_Txfm2d_Func)(const int32_t*, uint16_t*, const int,
+ const TXFM_2D_CFG*, const int);
+
+static const int bd = 10;
+static const int base = (1 << bd);
+
+#endif // VP10_TXFM_TEST_H_
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