--- /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"
+#include "vp10/common/vp10_inv_txfm1d.h"
+
+using libvpx_test::ACMRandom;
+
+namespace {
+static int txfm_type_num = 2;
+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}};
+
+static TxfmFunc inv_txfm_func_ls[2][4] = {
+ {vp10_idct4_new, vp10_idct8_new, vp10_idct16_new, vp10_idct32_new},
+ {vp10_iadst4_new, vp10_iadst8_new, vp10_iadst16_new, vp10_iadst32_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_inv_txfm1d, round_trip) {
+ 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];
+ int32_t *round_trip_output = new int32_t[txfm_size];
+
+ for (int ti = 0; ti < txfm_type_num; ++ti) {
+ TxfmFunc fwd_txfm_func = fwd_txfm_func_ls[ti][si];
+ TxfmFunc inv_txfm_func = inv_txfm_func_ls[ti][si];
+ int max_error = 2;
+
+ const int count_test_block = 5000;
+ for (int ci = 0; ci < count_test_block; ++ci) {
+ for (int ni = 0; ni < txfm_size; ++ni) {
+ input[ni] = rnd.Rand16() % base - rnd.Rand16() % base;
+ }
+
+ fwd_txfm_func(input, output, cos_bit, range_bit);
+ inv_txfm_func(output, round_trip_output, cos_bit, range_bit);
+
+ for (int ni = 0; ni < txfm_size; ++ni) {
+ EXPECT_LE(abs(input[ni] - round_shift(round_trip_output[ni],
+ get_max_bit(txfm_size) - 1)),
+ max_error);
+ }
+ }
+ }
+ delete[] input;
+ delete[] output;
+ delete[] round_trip_output;
+ }
+}
+
+} // namespace