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+
+/*
+ *  Copyright (c) 2016 The WebRTC 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 MODULES_AUDIO_PROCESSING_TEST_BITEXACTNESS_TOOLS_H_
+#define MODULES_AUDIO_PROCESSING_TEST_BITEXACTNESS_TOOLS_H_
+
+#include <string>
+
+#include "api/array_view.h"
+#include "modules/audio_coding/neteq/tools/input_audio_file.h"
+#include "test/gtest.h"
+
+namespace webrtc {
+namespace test {
+
+// Returns test vector to use for the render signal in an
+// APM bitexactness test.
+std::string GetApmRenderTestVectorFileName(int sample_rate_hz);
+
+// Returns test vector to use for the capture signal in an
+// APM bitexactness test.
+std::string GetApmCaptureTestVectorFileName(int sample_rate_hz);
+
+// Extract float samples of up to two channels from a pcm file.
+void ReadFloatSamplesFromStereoFile(size_t samples_per_channel,
+                                    size_t num_channels,
+                                    InputAudioFile* stereo_pcm_file,
+                                    rtc::ArrayView<float> data);
+
+// Verifies a frame against a reference and returns the results as an
+// AssertionResult.
+::testing::AssertionResult VerifyDeinterleavedArray(
+    size_t samples_per_channel,
+    size_t num_channels,
+    rtc::ArrayView<const float> reference,
+    rtc::ArrayView<const float> output,
+    float element_error_bound);
+
+// Verifies a vector against a reference and returns the results as an
+// AssertionResult.
+::testing::AssertionResult VerifyArray(rtc::ArrayView<const float> reference,
+                                       rtc::ArrayView<const float> output,
+                                       float element_error_bound);
+
+}  // namespace test
+}  // namespace webrtc
+
+#endif  // MODULES_AUDIO_PROCESSING_TEST_BITEXACTNESS_TOOLS_H_