Add vp10_inv_txfm1d_test

Change-Id: I3b76c0146af7f191cdae31d2b53ab6d51ac791a4

test/test.mk

@@ -172,6 +172,7 @@ LIBVPX_TEST_SRCS-$(CONFIG_VP10_ENCODER) += vp10_dct_test.cc
 LIBVPX_TEST_SRCS-$(CONFIG_VP10) += vp10_inv_txfm_test.cc
 LIBVPX_TEST_SRCS-$(CONFIG_VP10) += vp10_txfm_test.h
 LIBVPX_TEST_SRCS-$(CONFIG_VP10) += vp10_fwd_txfm1d_test.cc
+LIBVPX_TEST_SRCS-$(CONFIG_VP10) += vp10_inv_txfm1d_test.cc
 
 endif # CONFIG_SHARED
 

test/vp10_inv_txfm1d_test.cc

+/*
+ *  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