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diff --git a/webrtc/modules/audio_coding/test/iSACTest.h b/webrtc/modules/audio_coding/test/iSACTest.h
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+++ b/webrtc/modules/audio_coding/test/iSACTest.h
@@ -0,0 +1,79 @@
+/*
+ *  Copyright (c) 2012 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 WEBRTC_MODULES_AUDIO_CODING_TEST_ISACTEST_H_
+#define WEBRTC_MODULES_AUDIO_CODING_TEST_ISACTEST_H_
+
+#include <string.h>
+
+#include "webrtc/base/scoped_ptr.h"
+#include "webrtc/common_types.h"
+#include "webrtc/modules/audio_coding/include/audio_coding_module.h"
+#include "webrtc/modules/audio_coding/test/ACMTest.h"
+#include "webrtc/modules/audio_coding/test/Channel.h"
+#include "webrtc/modules/audio_coding/test/PCMFile.h"
+#include "webrtc/modules/audio_coding/test/utility.h"
+
+#define MAX_FILE_NAME_LENGTH_BYTE 500
+#define NO_OF_CLIENTS             15
+
+namespace webrtc {
+
+struct ACMTestISACConfig {
+  int32_t currentRateBitPerSec;
+  int16_t currentFrameSizeMsec;
+  int16_t encodingMode;
+  uint32_t initRateBitPerSec;
+  int16_t initFrameSizeInMsec;
+  bool enforceFrameSize;
+};
+
+class ISACTest : public ACMTest {
+ public:
+  explicit ISACTest(int testMode);
+  ~ISACTest();
+
+  void Perform();
+ private:
+  void Setup();
+
+  void Run10ms();
+
+  void EncodeDecode(int testNr, ACMTestISACConfig& wbISACConfig,
+                    ACMTestISACConfig& swbISACConfig);
+
+  void SwitchingSamplingRate(int testNr, int maxSampRateChange);
+
+  rtc::scoped_ptr<AudioCodingModule> _acmA;
+  rtc::scoped_ptr<AudioCodingModule> _acmB;
+
+  rtc::scoped_ptr<Channel> _channel_A2B;
+  rtc::scoped_ptr<Channel> _channel_B2A;
+
+  PCMFile _inFileA;
+  PCMFile _inFileB;
+
+  PCMFile _outFileA;
+  PCMFile _outFileB;
+
+  uint8_t _idISAC16kHz;
+  uint8_t _idISAC32kHz;
+  CodecInst _paramISAC16kHz;
+  CodecInst _paramISAC32kHz;
+
+  std::string file_name_swb_;
+
+  ACMTestTimer _myTimer;
+  int _testMode;
+};
+
+}  // namespace webrtc
+
+#endif  // WEBRTC_MODULES_AUDIO_CODING_TEST_ISACTEST_H_