modules/audio_coding/main/test/dual_stream_unittest.cc - src/webrtc - Git at Google

 /*
  *  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.
  */

 #include "testing/gtest/include/gtest/gtest.h"
 #include "webrtc/modules/audio_coding/main/acm2/acm_common_defs.h"
 #include "webrtc/modules/audio_coding/main/interface/audio_coding_module.h"
 #include "webrtc/modules/audio_coding/main/test/PCMFile.h"
 #include "webrtc/modules/audio_coding/main/test/utility.h"
 #include "webrtc/modules/interface/module_common_types.h"
 #include "webrtc/system_wrappers/interface/scoped_ptr.h"
 #include "webrtc/typedefs.h"
 #include "webrtc/test/testsupport/fileutils.h"
 #include "webrtc/test/testsupport/gtest_disable.h"

 namespace webrtc {

 class DualStreamTest : public AudioPacketizationCallback,
                        public ::testing::Test {
  protected:
   DualStreamTest();
   ~DualStreamTest();

   void RunTest(int frame_size_primary_samples,
                int num_channels_primary,
                int sampling_rate,
                bool start_in_sync,
                int num_channels_input);

   void ApiTest();

   virtual int32_t SendData(
       FrameType frameType,
       uint8_t payload_type,
       uint32_t timestamp,
       const uint8_t* payload_data,
       size_t payload_size,
       const RTPFragmentationHeader* fragmentation) OVERRIDE;

   void Perform(bool start_in_sync, int num_channels_input);

   void InitializeSender(int frame_size_primary_samples,
                         int num_channels_primary, int sampling_rate);

   void PopulateCodecInstances(int frame_size_primary_ms,
                               int num_channels_primary, int sampling_rate);

   void Validate(bool start_in_sync, size_t tolerance);
   bool EqualTimestamp(int stream, int position);
   size_t EqualPayloadLength(int stream, int position);
   bool EqualPayloadData(int stream, int position);

   static const int kMaxNumStoredPayloads = 2;

   enum {
     kPrimary = 0,
     kSecondary,
     kMaxNumStreams
   };

   scoped_ptr<AudioCodingModule> acm_dual_stream_;
   scoped_ptr<AudioCodingModule> acm_ref_primary_;
   scoped_ptr<AudioCodingModule> acm_ref_secondary_;

   CodecInst primary_encoder_;
   CodecInst secondary_encoder_;

   CodecInst red_encoder_;

   int payload_ref_is_stored_[kMaxNumStreams][kMaxNumStoredPayloads];
   int payload_dual_is_stored_[kMaxNumStreams][kMaxNumStoredPayloads];

   uint32_t timestamp_ref_[kMaxNumStreams][kMaxNumStoredPayloads];
   uint32_t timestamp_dual_[kMaxNumStreams][kMaxNumStoredPayloads];

   size_t payload_len_ref_[kMaxNumStreams][kMaxNumStoredPayloads];
   size_t payload_len_dual_[kMaxNumStreams][kMaxNumStoredPayloads];

   uint8_t payload_data_ref_[kMaxNumStreams][MAX_PAYLOAD_SIZE_BYTE
       * kMaxNumStoredPayloads];
   uint8_t payload_data_dual_[kMaxNumStreams][MAX_PAYLOAD_SIZE_BYTE
       * kMaxNumStoredPayloads];
   int num_received_payloads_dual_[kMaxNumStreams];
   int num_received_payloads_ref_[kMaxNumStreams];

   int num_compared_payloads_[kMaxNumStreams];
   uint32_t last_timestamp_[kMaxNumStreams];
   bool received_payload_[kMaxNumStreams];
 };

 DualStreamTest::DualStreamTest()
     : acm_dual_stream_(AudioCodingModule::Create(0)),
       acm_ref_primary_(AudioCodingModule::Create(1)),
       acm_ref_secondary_(AudioCodingModule::Create(2)),
       payload_ref_is_stored_(),
       payload_dual_is_stored_(),
       timestamp_ref_(),
       num_received_payloads_dual_(),
       num_received_payloads_ref_(),
       num_compared_payloads_(),
       last_timestamp_(),
       received_payload_() {}

 DualStreamTest::~DualStreamTest() {}

 void DualStreamTest::PopulateCodecInstances(int frame_size_primary_ms,
                                             int num_channels_primary,
                                             int sampling_rate) {
   CodecInst my_codec;

   // Invalid values. To check later on if the codec are found in the database.
   primary_encoder_.pltype = -1;
   secondary_encoder_.pltype = -1;
   red_encoder_.pltype = -1;

   for (int n = 0; n < AudioCodingModule::NumberOfCodecs(); n++) {
     AudioCodingModule::Codec(n, &my_codec);
     if (strcmp(my_codec.plname, "ISAC") == 0
         && my_codec.plfreq == sampling_rate) {
       my_codec.rate = 32000;
       my_codec.pacsize = 30 * sampling_rate / 1000;
       memcpy(&secondary_encoder_, &my_codec, sizeof(my_codec));
     } else if (strcmp(my_codec.plname, "L16") == 0
         && my_codec.channels == num_channels_primary
         && my_codec.plfreq == sampling_rate) {
       my_codec.pacsize = frame_size_primary_ms * sampling_rate / 1000;
       memcpy(&primary_encoder_, &my_codec, sizeof(my_codec));
     } else if (strcmp(my_codec.plname, "red") == 0) {
       memcpy(&red_encoder_, &my_codec, sizeof(my_codec));
     }
   }

   ASSERT_GE(primary_encoder_.pltype, 0);
   ASSERT_GE(secondary_encoder_.pltype, 0);
   ASSERT_GE(red_encoder_.pltype, 0);
 }

 void DualStreamTest::InitializeSender(int frame_size_primary_samples,
                                       int num_channels_primary,
                                       int sampling_rate) {
   ASSERT_TRUE(acm_dual_stream_.get() != NULL);
   ASSERT_TRUE(acm_ref_primary_.get() != NULL);
   ASSERT_TRUE(acm_ref_secondary_.get() != NULL);

   ASSERT_EQ(0, acm_dual_stream_->InitializeSender());
   ASSERT_EQ(0, acm_ref_primary_->InitializeSender());
   ASSERT_EQ(0, acm_ref_secondary_->InitializeSender());

   PopulateCodecInstances(frame_size_primary_samples, num_channels_primary,
                          sampling_rate);

   ASSERT_EQ(0, acm_ref_primary_->RegisterSendCodec(primary_encoder_));
   ASSERT_EQ(0, acm_ref_secondary_->RegisterSendCodec(secondary_encoder_));
   ASSERT_EQ(0, acm_dual_stream_->RegisterSendCodec(primary_encoder_));
   ASSERT_EQ(0,
             acm_dual_stream_->RegisterSecondarySendCodec(secondary_encoder_));

   ASSERT_EQ(0, acm_ref_primary_->RegisterTransportCallback(this));
   ASSERT_EQ(0, acm_ref_secondary_->RegisterTransportCallback(this));
   ASSERT_EQ(0, acm_dual_stream_->RegisterTransportCallback(this));
 }

 void DualStreamTest::Perform(bool start_in_sync, int num_channels_input) {
   PCMFile pcm_file;
   std::string file_name = test::ResourcePath(
       (num_channels_input == 1) ?
           "audio_coding/testfile32kHz" : "audio_coding/teststereo32kHz",
       "pcm");
   pcm_file.Open(file_name, 32000, "rb");
   pcm_file.ReadStereo(num_channels_input == 2);
   AudioFrame audio_frame;

   size_t tolerance = 0;
   if (num_channels_input == 2 && primary_encoder_.channels == 2
       && secondary_encoder_.channels == 1) {
     tolerance = 12;
   }

   if (!start_in_sync) {
     pcm_file.Read10MsData(audio_frame);
     // Unregister secondary codec and feed only the primary
     acm_dual_stream_->UnregisterSecondarySendCodec();
     EXPECT_EQ(0, acm_dual_stream_->Add10MsData(audio_frame));
     EXPECT_EQ(0, acm_ref_primary_->Add10MsData(audio_frame));
     ASSERT_EQ(0,
               acm_dual_stream_->RegisterSecondarySendCodec(secondary_encoder_));
   }

   const int kNumFramesToProcess = 100;
   int frame_cntr = 0;
   while (!pcm_file.EndOfFile() && frame_cntr < kNumFramesToProcess) {
     pcm_file.Read10MsData(audio_frame);
     frame_cntr++;
     EXPECT_EQ(0, acm_dual_stream_->Add10MsData(audio_frame));
     EXPECT_EQ(0, acm_ref_primary_->Add10MsData(audio_frame));
     EXPECT_EQ(0, acm_ref_secondary_->Add10MsData(audio_frame));

     EXPECT_GE(acm_dual_stream_->Process(), 0);
     EXPECT_GE(acm_ref_primary_->Process(), 0);
     EXPECT_GE(acm_ref_secondary_->Process(), 0);

     if (start_in_sync || frame_cntr > 7) {
       // If we haven't started in sync the first few audio frames might
       // slightly differ due to the difference in the state of the resamplers
       // of dual-ACM and reference-ACM.
       Validate(start_in_sync, tolerance);
     } else {
       // SendData stores the payloads, if we are not comparing we have to free
       // the space by resetting these flags.
       memset(payload_ref_is_stored_, 0, sizeof(payload_ref_is_stored_));
       memset(payload_dual_is_stored_, 0, sizeof(payload_dual_is_stored_));
     }
   }
   pcm_file.Close();

   // Make sure that number of received payloads match. In case of secondary
   // encoder, the dual-stream might deliver one lesser payload. The reason is
   // that some secondary payloads are stored to be sent with a payload generated
   // later and the input file may end before the "next" payload .
   EXPECT_EQ(num_received_payloads_ref_[kPrimary],
             num_received_payloads_dual_[kPrimary]);
   EXPECT_TRUE(
       num_received_payloads_ref_[kSecondary]
           == num_received_payloads_dual_[kSecondary]
           || num_received_payloads_ref_[kSecondary]
               == (num_received_payloads_dual_[kSecondary] + 1));

   // Make sure all received payloads are compared.
   if (start_in_sync) {
     EXPECT_EQ(num_received_payloads_dual_[kPrimary],
               num_compared_payloads_[kPrimary]);
     EXPECT_EQ(num_received_payloads_dual_[kSecondary],
               num_compared_payloads_[kSecondary]);
   } else {
     // In asynchronous test we don't compare couple of first frames, so we
     // should account for them in our counting.
     EXPECT_GE(num_compared_payloads_[kPrimary],
               num_received_payloads_dual_[kPrimary] - 4);
     EXPECT_GE(num_compared_payloads_[kSecondary],
               num_received_payloads_dual_[kSecondary] - 4);
   }
 }

 bool DualStreamTest::EqualTimestamp(int stream_index, int position) {
   if (timestamp_dual_[stream_index][position]
       != timestamp_ref_[stream_index][position]) {
     return false;
   }
   return true;
 }

 size_t DualStreamTest::EqualPayloadLength(int stream_index, int position) {
   size_t dual = payload_len_dual_[stream_index][position];
   size_t ref = payload_len_ref_[stream_index][position];
   return (dual > ref) ? (dual - ref) : (ref - dual);
 }

 bool DualStreamTest::EqualPayloadData(int stream_index, int position) {
   assert(
       payload_len_dual_[stream_index][position]
           == payload_len_ref_[stream_index][position]);
   int offset = position * MAX_PAYLOAD_SIZE_BYTE;
   for (size_t n = 0; n < payload_len_dual_[stream_index][position]; n++) {
     if (payload_data_dual_[stream_index][offset + n]
         != payload_data_ref_[stream_index][offset + n]) {
       return false;
     }
   }
   return true;
 }

 void DualStreamTest::Validate(bool start_in_sync, size_t tolerance) {
   for (int stream_index = 0; stream_index < kMaxNumStreams; stream_index++) {
     size_t my_tolerance = stream_index == kPrimary ? 0 : tolerance;
     for (int position = 0; position < kMaxNumStoredPayloads; position++) {
       if (payload_ref_is_stored_[stream_index][position] == 1
           && payload_dual_is_stored_[stream_index][position] == 1) {
         // Check timestamps only if codecs started in sync or it is primary.
         if (start_in_sync || stream_index == 0)
           EXPECT_TRUE(EqualTimestamp(stream_index, position));
         EXPECT_LE(EqualPayloadLength(stream_index, position), my_tolerance);
         if (my_tolerance == 0)
           EXPECT_TRUE(EqualPayloadData(stream_index, position));
         num_compared_payloads_[stream_index]++;
         payload_ref_is_stored_[stream_index][position] = 0;
         payload_dual_is_stored_[stream_index][position] = 0;
       }
     }
   }
 }

 int32_t DualStreamTest::SendData(FrameType frameType, uint8_t payload_type,
                                  uint32_t timestamp,
                                  const uint8_t* payload_data,
                                  size_t payload_size,
                                  const RTPFragmentationHeader* fragmentation) {
   int position;
   int stream_index;

   if (payload_type == red_encoder_.pltype) {
     if (fragmentation == NULL) {
       assert(false);
       return -1;
     }
     // As the oldest payloads are in the higher indices of fragmentation,
     // to be able to check the increment of timestamps are correct we loop
     // backward.
     for (int n = fragmentation->fragmentationVectorSize - 1; n >= 0; --n) {
       if (fragmentation->fragmentationPlType[n] == primary_encoder_.pltype) {
         // Received primary payload from dual stream.
         stream_index = kPrimary;
       } else if (fragmentation->fragmentationPlType[n]
           == secondary_encoder_.pltype) {
         // Received secondary payload from dual stream.
         stream_index = kSecondary;
       } else {
         assert(false);
         return -1;
       }
       num_received_payloads_dual_[stream_index]++;
       if (payload_dual_is_stored_[stream_index][0] == 0) {
         position = 0;
       } else if (payload_dual_is_stored_[stream_index][1] == 0) {
         position = 1;
       } else {
         assert(false);
         return -1;
       }
       timestamp_dual_[stream_index][position] = timestamp
           - fragmentation->fragmentationTimeDiff[n];
       payload_len_dual_[stream_index][position] = fragmentation
           ->fragmentationLength[n];
       memcpy(
           &payload_data_dual_[stream_index][position * MAX_PAYLOAD_SIZE_BYTE],
           &payload_data[fragmentation->fragmentationOffset[n]],
           fragmentation->fragmentationLength[n]);
       payload_dual_is_stored_[stream_index][position] = 1;
       // Check if timestamps are incremented correctly.
       if (received_payload_[stream_index]) {
         int t = timestamp_dual_[stream_index][position]
             - last_timestamp_[stream_index];
         if ((stream_index == kPrimary) && (t != primary_encoder_.pacsize)) {
           assert(false);
           return -1;
         }
         if ((stream_index == kSecondary) && (t != secondary_encoder_.pacsize)) {
           assert(false);
           return -1;
         }
       } else {
         received_payload_[stream_index] = true;
       }
       last_timestamp_[stream_index] = timestamp_dual_[stream_index][position];
     }
   } else {
     if (fragmentation != NULL) {
       assert(false);
       return -1;
     }
     if (payload_type == primary_encoder_.pltype) {
       stream_index = kPrimary;
     } else if (payload_type == secondary_encoder_.pltype) {
       stream_index = kSecondary;
     } else {
       assert(false);
       return -1;
     }
     num_received_payloads_ref_[stream_index]++;
     if (payload_ref_is_stored_[stream_index][0] == 0) {
       position = 0;
     } else if (payload_ref_is_stored_[stream_index][1] == 0) {
       position = 1;
     } else {
       assert(false);
       return -1;
     }
     timestamp_ref_[stream_index][position] = timestamp;
     payload_len_ref_[stream_index][position] = payload_size;
     memcpy(&payload_data_ref_[stream_index][position * MAX_PAYLOAD_SIZE_BYTE],
            payload_data, payload_size);
     payload_ref_is_stored_[stream_index][position] = 1;
   }
   return 0;
 }

 // Mono input, mono primary WB 20 ms frame.
 TEST_F(DualStreamTest,
        DISABLED_ON_ANDROID(BitExactSyncMonoInputMonoPrimaryWb20Ms)) {
   InitializeSender(20, 1, 16000);
   Perform(true, 1);
 }

 // Mono input, stereo primary WB 20 ms frame.
 TEST_F(DualStreamTest,
        DISABLED_ON_ANDROID(BitExactSyncMonoInput_StereoPrimaryWb20Ms)) {
   InitializeSender(20, 2, 16000);
   Perform(true, 1);
 }

 // Mono input, mono primary SWB 20 ms frame.
 TEST_F(DualStreamTest,
        DISABLED_ON_ANDROID(BitExactSyncMonoInputMonoPrimarySwb20Ms)) {
   InitializeSender(20, 1, 32000);
   Perform(true, 1);
 }

 // Mono input, stereo primary SWB 20 ms frame.
 TEST_F(DualStreamTest,
        DISABLED_ON_ANDROID(BitExactSyncMonoInputStereoPrimarySwb20Ms)) {
   InitializeSender(20, 2, 32000);
   Perform(true, 1);
 }

 // Mono input, mono primary WB 40 ms frame.
 TEST_F(DualStreamTest,
        DISABLED_ON_ANDROID(BitExactSyncMonoInputMonoPrimaryWb40Ms)) {
   InitializeSender(40, 1, 16000);
   Perform(true, 1);
 }

 // Mono input, stereo primary WB 40 ms frame
 TEST_F(DualStreamTest,
        DISABLED_ON_ANDROID(BitExactSyncMonoInputStereoPrimaryWb40Ms)) {
   InitializeSender(40, 2, 16000);
   Perform(true, 1);
 }

 // Stereo input, mono primary WB 20 ms frame.
 TEST_F(DualStreamTest,
        DISABLED_ON_ANDROID(BitExactSyncStereoInputMonoPrimaryWb20Ms)) {
   InitializeSender(20, 1, 16000);
   Perform(true, 2);
 }

 // Stereo input, stereo primary WB 20 ms frame.
 TEST_F(DualStreamTest,
        DISABLED_ON_ANDROID(BitExactSyncStereoInputStereoPrimaryWb20Ms)) {
   InitializeSender(20, 2, 16000);
   Perform(true, 2);
 }

 // Stereo input, mono primary SWB 20 ms frame.
 TEST_F(DualStreamTest,
        DISABLED_ON_ANDROID(BitExactSyncStereoInputMonoPrimarySwb20Ms)) {
   InitializeSender(20, 1, 32000);
   Perform(true, 2);
 }

 // Stereo input, stereo primary SWB 20 ms frame.
 TEST_F(DualStreamTest,
        DISABLED_ON_ANDROID(BitExactSyncStereoInputStereoPrimarySwb20Ms)) {
   InitializeSender(20, 2, 32000);
   Perform(true, 2);
 }

 // Stereo input, mono primary WB 40 ms frame.
 TEST_F(DualStreamTest,
        DISABLED_ON_ANDROID(BitExactSyncStereoInputMonoPrimaryWb40Ms)) {
   InitializeSender(40, 1, 16000);
   Perform(true, 2);
 }

 // Stereo input, stereo primary WB 40 ms frame.
 TEST_F(DualStreamTest,
        DISABLED_ON_ANDROID(BitExactSyncStereoInputStereoPrimaryWb40Ms)) {
   InitializeSender(40, 2, 16000);
   Perform(true, 2);
 }

 // Asynchronous test, ACM is fed with data then secondary coder is registered.
 // Mono input, mono primary WB 20 ms frame.
 TEST_F(DualStreamTest,
        DISABLED_ON_ANDROID(BitExactAsyncMonoInputMonoPrimaryWb20Ms)) {
   InitializeSender(20, 1, 16000);
   Perform(false, 1);
 }

 // Mono input, mono primary WB 20 ms frame.
 TEST_F(DualStreamTest,
        DISABLED_ON_ANDROID(BitExactAsyncMonoInputMonoPrimaryWb40Ms)) {
   InitializeSender(40, 1, 16000);
   Perform(false, 1);
 }

 TEST_F(DualStreamTest, DISABLED_ON_ANDROID(Api)) {
   PopulateCodecInstances(20, 1, 16000);
   CodecInst my_codec;
   ASSERT_EQ(0, acm_dual_stream_->InitializeSender());
   ASSERT_EQ(-1, acm_dual_stream_->SecondarySendCodec(&my_codec));

   // Not allowed to register secondary codec if primary is not registered yet.
   ASSERT_EQ(-1,
       acm_dual_stream_->RegisterSecondarySendCodec(secondary_encoder_));
   ASSERT_EQ(-1, acm_dual_stream_->SecondarySendCodec(&my_codec));

   ASSERT_EQ(0, acm_dual_stream_->RegisterSendCodec(primary_encoder_));

   ASSERT_EQ(0, acm_dual_stream_->SetVAD(true, true, VADNormal));

   // Make sure vad is activated.
   bool vad_status;
   bool dtx_status;
   ACMVADMode vad_mode;
   EXPECT_EQ(0, acm_dual_stream_->VAD(&vad_status, &dtx_status, &vad_mode));
   EXPECT_TRUE(vad_status);
   EXPECT_TRUE(dtx_status);
   EXPECT_EQ(VADNormal, vad_mode);

   ASSERT_EQ(0,
       acm_dual_stream_->RegisterSecondarySendCodec(secondary_encoder_));

   ASSERT_EQ(0, acm_dual_stream_->SecondarySendCodec(&my_codec));
   ASSERT_EQ(0, memcmp(&my_codec, &secondary_encoder_, sizeof(my_codec)));

   // Test if VAD get disabled after registering secondary codec.
   EXPECT_EQ(0, acm_dual_stream_->VAD(&vad_status, &dtx_status, &vad_mode));
   EXPECT_FALSE(vad_status);
   EXPECT_FALSE(dtx_status);

   // Activating VAD should fail.
   ASSERT_EQ(-1, acm_dual_stream_->SetVAD(true, true, VADNormal));

   // Unregister secondary encoder and it should be possible to activate VAD.
   acm_dual_stream_->UnregisterSecondarySendCodec();
   // Should fail.
   ASSERT_EQ(-1, acm_dual_stream_->SecondarySendCodec(&my_codec));

   ASSERT_EQ(0, acm_dual_stream_->SetVAD(true, true, VADVeryAggr));
   // Make sure VAD is activated.
   EXPECT_EQ(0, acm_dual_stream_->VAD(&vad_status, &dtx_status, &vad_mode));
   EXPECT_TRUE(vad_status);
   EXPECT_TRUE(dtx_status);
   EXPECT_EQ(VADVeryAggr, vad_mode);
 }

 }  // namespace webrtc
	/*
	* 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.
	*/

	#include "testing/gtest/include/gtest/gtest.h"
	#include "webrtc/modules/audio_coding/main/acm2/acm_common_defs.h"
	#include "webrtc/modules/audio_coding/main/interface/audio_coding_module.h"
	#include "webrtc/modules/audio_coding/main/test/PCMFile.h"
	#include "webrtc/modules/audio_coding/main/test/utility.h"
	#include "webrtc/modules/interface/module_common_types.h"
	#include "webrtc/system_wrappers/interface/scoped_ptr.h"
	#include "webrtc/typedefs.h"
	#include "webrtc/test/testsupport/fileutils.h"
	#include "webrtc/test/testsupport/gtest_disable.h"

	namespace webrtc {

	class DualStreamTest : public AudioPacketizationCallback,
	public ::testing::Test {
	protected:
	DualStreamTest();
	~DualStreamTest();

	void RunTest(int frame_size_primary_samples,
	int num_channels_primary,
	int sampling_rate,
	bool start_in_sync,
	int num_channels_input);

	void ApiTest();

	virtual int32_t SendData(
	FrameType frameType,
	uint8_t payload_type,
	uint32_t timestamp,
	const uint8_t* payload_data,
	size_t payload_size,
	const RTPFragmentationHeader* fragmentation) OVERRIDE;

	void Perform(bool start_in_sync, int num_channels_input);

	void InitializeSender(int frame_size_primary_samples,
	int num_channels_primary, int sampling_rate);

	void PopulateCodecInstances(int frame_size_primary_ms,
	int num_channels_primary, int sampling_rate);

	void Validate(bool start_in_sync, size_t tolerance);
	bool EqualTimestamp(int stream, int position);
	size_t EqualPayloadLength(int stream, int position);
	bool EqualPayloadData(int stream, int position);

	static const int kMaxNumStoredPayloads = 2;

	enum {
	kPrimary = 0,
	kSecondary,
	kMaxNumStreams
	};

	scoped_ptr<AudioCodingModule> acm_dual_stream_;
	scoped_ptr<AudioCodingModule> acm_ref_primary_;
	scoped_ptr<AudioCodingModule> acm_ref_secondary_;

	CodecInst primary_encoder_;
	CodecInst secondary_encoder_;

	CodecInst red_encoder_;

	int payload_ref_is_stored_[kMaxNumStreams][kMaxNumStoredPayloads];
	int payload_dual_is_stored_[kMaxNumStreams][kMaxNumStoredPayloads];

	uint32_t timestamp_ref_[kMaxNumStreams][kMaxNumStoredPayloads];
	uint32_t timestamp_dual_[kMaxNumStreams][kMaxNumStoredPayloads];

	size_t payload_len_ref_[kMaxNumStreams][kMaxNumStoredPayloads];
	size_t payload_len_dual_[kMaxNumStreams][kMaxNumStoredPayloads];

	uint8_t payload_data_ref_[kMaxNumStreams][MAX_PAYLOAD_SIZE_BYTE
	* kMaxNumStoredPayloads];
	uint8_t payload_data_dual_[kMaxNumStreams][MAX_PAYLOAD_SIZE_BYTE
	* kMaxNumStoredPayloads];
	int num_received_payloads_dual_[kMaxNumStreams];
	int num_received_payloads_ref_[kMaxNumStreams];

	int num_compared_payloads_[kMaxNumStreams];
	uint32_t last_timestamp_[kMaxNumStreams];
	bool received_payload_[kMaxNumStreams];
	};

	DualStreamTest::DualStreamTest()
	: acm_dual_stream_(AudioCodingModule::Create(0)),
	acm_ref_primary_(AudioCodingModule::Create(1)),
	acm_ref_secondary_(AudioCodingModule::Create(2)),
	payload_ref_is_stored_(),
	payload_dual_is_stored_(),
	timestamp_ref_(),
	num_received_payloads_dual_(),
	num_received_payloads_ref_(),
	num_compared_payloads_(),
	last_timestamp_(),
	received_payload_() {}

	DualStreamTest::~DualStreamTest() {}

	void DualStreamTest::PopulateCodecInstances(int frame_size_primary_ms,
	int num_channels_primary,
	int sampling_rate) {
	CodecInst my_codec;

	// Invalid values. To check later on if the codec are found in the database.
	primary_encoder_.pltype = -1;
	secondary_encoder_.pltype = -1;
	red_encoder_.pltype = -1;

	for (int n = 0; n < AudioCodingModule::NumberOfCodecs(); n++) {
	AudioCodingModule::Codec(n, &my_codec);
	if (strcmp(my_codec.plname, "ISAC") == 0
	&& my_codec.plfreq == sampling_rate) {
	my_codec.rate = 32000;
	my_codec.pacsize = 30 * sampling_rate / 1000;
	memcpy(&secondary_encoder_, &my_codec, sizeof(my_codec));
	} else if (strcmp(my_codec.plname, "L16") == 0
	&& my_codec.channels == num_channels_primary
	&& my_codec.plfreq == sampling_rate) {
	my_codec.pacsize = frame_size_primary_ms * sampling_rate / 1000;
	memcpy(&primary_encoder_, &my_codec, sizeof(my_codec));
	} else if (strcmp(my_codec.plname, "red") == 0) {
	memcpy(&red_encoder_, &my_codec, sizeof(my_codec));
	}
	}

	ASSERT_GE(primary_encoder_.pltype, 0);
	ASSERT_GE(secondary_encoder_.pltype, 0);
	ASSERT_GE(red_encoder_.pltype, 0);
	}

	void DualStreamTest::InitializeSender(int frame_size_primary_samples,
	int num_channels_primary,
	int sampling_rate) {
	ASSERT_TRUE(acm_dual_stream_.get() != NULL);
	ASSERT_TRUE(acm_ref_primary_.get() != NULL);
	ASSERT_TRUE(acm_ref_secondary_.get() != NULL);

	ASSERT_EQ(0, acm_dual_stream_->InitializeSender());
	ASSERT_EQ(0, acm_ref_primary_->InitializeSender());
	ASSERT_EQ(0, acm_ref_secondary_->InitializeSender());

	PopulateCodecInstances(frame_size_primary_samples, num_channels_primary,
	sampling_rate);

	ASSERT_EQ(0, acm_ref_primary_->RegisterSendCodec(primary_encoder_));
	ASSERT_EQ(0, acm_ref_secondary_->RegisterSendCodec(secondary_encoder_));
	ASSERT_EQ(0, acm_dual_stream_->RegisterSendCodec(primary_encoder_));
	ASSERT_EQ(0,
	acm_dual_stream_->RegisterSecondarySendCodec(secondary_encoder_));

	ASSERT_EQ(0, acm_ref_primary_->RegisterTransportCallback(this));
	ASSERT_EQ(0, acm_ref_secondary_->RegisterTransportCallback(this));
	ASSERT_EQ(0, acm_dual_stream_->RegisterTransportCallback(this));
	}

	void DualStreamTest::Perform(bool start_in_sync, int num_channels_input) {
	PCMFile pcm_file;
	std::string file_name = test::ResourcePath(
	(num_channels_input == 1) ?
	"audio_coding/testfile32kHz" : "audio_coding/teststereo32kHz",
	"pcm");
	pcm_file.Open(file_name, 32000, "rb");
	pcm_file.ReadStereo(num_channels_input == 2);
	AudioFrame audio_frame;

	size_t tolerance = 0;
	if (num_channels_input == 2 && primary_encoder_.channels == 2
	&& secondary_encoder_.channels == 1) {
	tolerance = 12;
	}

	if (!start_in_sync) {
	pcm_file.Read10MsData(audio_frame);
	// Unregister secondary codec and feed only the primary
	acm_dual_stream_->UnregisterSecondarySendCodec();
	EXPECT_EQ(0, acm_dual_stream_->Add10MsData(audio_frame));
	EXPECT_EQ(0, acm_ref_primary_->Add10MsData(audio_frame));
	ASSERT_EQ(0,
	acm_dual_stream_->RegisterSecondarySendCodec(secondary_encoder_));
	}

	const int kNumFramesToProcess = 100;
	int frame_cntr = 0;
	while (!pcm_file.EndOfFile() && frame_cntr < kNumFramesToProcess) {
	pcm_file.Read10MsData(audio_frame);
	frame_cntr++;
	EXPECT_EQ(0, acm_dual_stream_->Add10MsData(audio_frame));
	EXPECT_EQ(0, acm_ref_primary_->Add10MsData(audio_frame));
	EXPECT_EQ(0, acm_ref_secondary_->Add10MsData(audio_frame));

	EXPECT_GE(acm_dual_stream_->Process(), 0);
	EXPECT_GE(acm_ref_primary_->Process(), 0);
	EXPECT_GE(acm_ref_secondary_->Process(), 0);

	if (start_in_sync \|\| frame_cntr > 7) {
	// If we haven't started in sync the first few audio frames might
	// slightly differ due to the difference in the state of the resamplers
	// of dual-ACM and reference-ACM.
	Validate(start_in_sync, tolerance);
	} else {
	// SendData stores the payloads, if we are not comparing we have to free
	// the space by resetting these flags.
	memset(payload_ref_is_stored_, 0, sizeof(payload_ref_is_stored_));
	memset(payload_dual_is_stored_, 0, sizeof(payload_dual_is_stored_));
	}
	}
	pcm_file.Close();

	// Make sure that number of received payloads match. In case of secondary
	// encoder, the dual-stream might deliver one lesser payload. The reason is
	// that some secondary payloads are stored to be sent with a payload generated
	// later and the input file may end before the "next" payload .
	EXPECT_EQ(num_received_payloads_ref_[kPrimary],
	num_received_payloads_dual_[kPrimary]);
	EXPECT_TRUE(
	num_received_payloads_ref_[kSecondary]
	== num_received_payloads_dual_[kSecondary]
	\|\| num_received_payloads_ref_[kSecondary]
	== (num_received_payloads_dual_[kSecondary] + 1));

	// Make sure all received payloads are compared.
	if (start_in_sync) {
	EXPECT_EQ(num_received_payloads_dual_[kPrimary],
	num_compared_payloads_[kPrimary]);
	EXPECT_EQ(num_received_payloads_dual_[kSecondary],
	num_compared_payloads_[kSecondary]);
	} else {
	// In asynchronous test we don't compare couple of first frames, so we
	// should account for them in our counting.
	EXPECT_GE(num_compared_payloads_[kPrimary],
	num_received_payloads_dual_[kPrimary] - 4);
	EXPECT_GE(num_compared_payloads_[kSecondary],
	num_received_payloads_dual_[kSecondary] - 4);
	}
	}

	bool DualStreamTest::EqualTimestamp(int stream_index, int position) {
	if (timestamp_dual_[stream_index][position]
	!= timestamp_ref_[stream_index][position]) {
	return false;
	}
	return true;
	}

	size_t DualStreamTest::EqualPayloadLength(int stream_index, int position) {
	size_t dual = payload_len_dual_[stream_index][position];
	size_t ref = payload_len_ref_[stream_index][position];
	return (dual > ref) ? (dual - ref) : (ref - dual);
	}

	bool DualStreamTest::EqualPayloadData(int stream_index, int position) {
	assert(
	payload_len_dual_[stream_index][position]
	== payload_len_ref_[stream_index][position]);
	int offset = position * MAX_PAYLOAD_SIZE_BYTE;
	for (size_t n = 0; n < payload_len_dual_[stream_index][position]; n++) {
	if (payload_data_dual_[stream_index][offset + n]
	!= payload_data_ref_[stream_index][offset + n]) {
	return false;
	}
	}
	return true;
	}

	void DualStreamTest::Validate(bool start_in_sync, size_t tolerance) {
	for (int stream_index = 0; stream_index < kMaxNumStreams; stream_index++) {
	size_t my_tolerance = stream_index == kPrimary ? 0 : tolerance;
	for (int position = 0; position < kMaxNumStoredPayloads; position++) {
	if (payload_ref_is_stored_[stream_index][position] == 1
	&& payload_dual_is_stored_[stream_index][position] == 1) {
	// Check timestamps only if codecs started in sync or it is primary.
	if (start_in_sync \|\| stream_index == 0)
	EXPECT_TRUE(EqualTimestamp(stream_index, position));
	EXPECT_LE(EqualPayloadLength(stream_index, position), my_tolerance);
	if (my_tolerance == 0)
	EXPECT_TRUE(EqualPayloadData(stream_index, position));
	num_compared_payloads_[stream_index]++;
	payload_ref_is_stored_[stream_index][position] = 0;
	payload_dual_is_stored_[stream_index][position] = 0;
	}
	}
	}
	}

	int32_t DualStreamTest::SendData(FrameType frameType, uint8_t payload_type,
	uint32_t timestamp,
	const uint8_t* payload_data,
	size_t payload_size,
	const RTPFragmentationHeader* fragmentation) {
	int position;
	int stream_index;

	if (payload_type == red_encoder_.pltype) {
	if (fragmentation == NULL) {
	assert(false);
	return -1;
	}
	// As the oldest payloads are in the higher indices of fragmentation,
	// to be able to check the increment of timestamps are correct we loop
	// backward.
	for (int n = fragmentation->fragmentationVectorSize - 1; n >= 0; --n) {
	if (fragmentation->fragmentationPlType[n] == primary_encoder_.pltype) {
	// Received primary payload from dual stream.
	stream_index = kPrimary;
	} else if (fragmentation->fragmentationPlType[n]
	== secondary_encoder_.pltype) {
	// Received secondary payload from dual stream.
	stream_index = kSecondary;
	} else {
	assert(false);
	return -1;
	}
	num_received_payloads_dual_[stream_index]++;
	if (payload_dual_is_stored_[stream_index][0] == 0) {
	position = 0;
	} else if (payload_dual_is_stored_[stream_index][1] == 0) {
	position = 1;
	} else {
	assert(false);
	return -1;
	}
	timestamp_dual_[stream_index][position] = timestamp
	- fragmentation->fragmentationTimeDiff[n];
	payload_len_dual_[stream_index][position] = fragmentation
	->fragmentationLength[n];
	memcpy(
	&payload_data_dual_[stream_index][position * MAX_PAYLOAD_SIZE_BYTE],
	&payload_data[fragmentation->fragmentationOffset[n]],
	fragmentation->fragmentationLength[n]);
	payload_dual_is_stored_[stream_index][position] = 1;
	// Check if timestamps are incremented correctly.
	if (received_payload_[stream_index]) {
	int t = timestamp_dual_[stream_index][position]
	- last_timestamp_[stream_index];
	if ((stream_index == kPrimary) && (t != primary_encoder_.pacsize)) {
	assert(false);
	return -1;
	}
	if ((stream_index == kSecondary) && (t != secondary_encoder_.pacsize)) {
	assert(false);
	return -1;
	}
	} else {
	received_payload_[stream_index] = true;
	}
	last_timestamp_[stream_index] = timestamp_dual_[stream_index][position];
	}
	} else {
	if (fragmentation != NULL) {
	assert(false);
	return -1;
	}
	if (payload_type == primary_encoder_.pltype) {
	stream_index = kPrimary;
	} else if (payload_type == secondary_encoder_.pltype) {
	stream_index = kSecondary;
	} else {
	assert(false);
	return -1;
	}
	num_received_payloads_ref_[stream_index]++;
	if (payload_ref_is_stored_[stream_index][0] == 0) {
	position = 0;
	} else if (payload_ref_is_stored_[stream_index][1] == 0) {
	position = 1;
	} else {
	assert(false);
	return -1;
	}
	timestamp_ref_[stream_index][position] = timestamp;
	payload_len_ref_[stream_index][position] = payload_size;
	memcpy(&payload_data_ref_[stream_index][position * MAX_PAYLOAD_SIZE_BYTE],
	payload_data, payload_size);
	payload_ref_is_stored_[stream_index][position] = 1;
	}
	return 0;
	}

	// Mono input, mono primary WB 20 ms frame.
	TEST_F(DualStreamTest,
	DISABLED_ON_ANDROID(BitExactSyncMonoInputMonoPrimaryWb20Ms)) {
	InitializeSender(20, 1, 16000);
	Perform(true, 1);
	}

	// Mono input, stereo primary WB 20 ms frame.
	TEST_F(DualStreamTest,
	DISABLED_ON_ANDROID(BitExactSyncMonoInput_StereoPrimaryWb20Ms)) {
	InitializeSender(20, 2, 16000);
	Perform(true, 1);
	}

	// Mono input, mono primary SWB 20 ms frame.
	TEST_F(DualStreamTest,
	DISABLED_ON_ANDROID(BitExactSyncMonoInputMonoPrimarySwb20Ms)) {
	InitializeSender(20, 1, 32000);
	Perform(true, 1);
	}

	// Mono input, stereo primary SWB 20 ms frame.
	TEST_F(DualStreamTest,
	DISABLED_ON_ANDROID(BitExactSyncMonoInputStereoPrimarySwb20Ms)) {
	InitializeSender(20, 2, 32000);
	Perform(true, 1);
	}

	// Mono input, mono primary WB 40 ms frame.
	TEST_F(DualStreamTest,
	DISABLED_ON_ANDROID(BitExactSyncMonoInputMonoPrimaryWb40Ms)) {
	InitializeSender(40, 1, 16000);
	Perform(true, 1);
	}

	// Mono input, stereo primary WB 40 ms frame
	TEST_F(DualStreamTest,
	DISABLED_ON_ANDROID(BitExactSyncMonoInputStereoPrimaryWb40Ms)) {
	InitializeSender(40, 2, 16000);
	Perform(true, 1);
	}

	// Stereo input, mono primary WB 20 ms frame.
	TEST_F(DualStreamTest,
	DISABLED_ON_ANDROID(BitExactSyncStereoInputMonoPrimaryWb20Ms)) {
	InitializeSender(20, 1, 16000);
	Perform(true, 2);
	}

	// Stereo input, stereo primary WB 20 ms frame.
	TEST_F(DualStreamTest,
	DISABLED_ON_ANDROID(BitExactSyncStereoInputStereoPrimaryWb20Ms)) {
	InitializeSender(20, 2, 16000);
	Perform(true, 2);
	}

	// Stereo input, mono primary SWB 20 ms frame.
	TEST_F(DualStreamTest,
	DISABLED_ON_ANDROID(BitExactSyncStereoInputMonoPrimarySwb20Ms)) {
	InitializeSender(20, 1, 32000);
	Perform(true, 2);
	}

	// Stereo input, stereo primary SWB 20 ms frame.
	TEST_F(DualStreamTest,
	DISABLED_ON_ANDROID(BitExactSyncStereoInputStereoPrimarySwb20Ms)) {
	InitializeSender(20, 2, 32000);
	Perform(true, 2);
	}

	// Stereo input, mono primary WB 40 ms frame.
	TEST_F(DualStreamTest,
	DISABLED_ON_ANDROID(BitExactSyncStereoInputMonoPrimaryWb40Ms)) {
	InitializeSender(40, 1, 16000);
	Perform(true, 2);
	}

	// Stereo input, stereo primary WB 40 ms frame.
	TEST_F(DualStreamTest,
	DISABLED_ON_ANDROID(BitExactSyncStereoInputStereoPrimaryWb40Ms)) {
	InitializeSender(40, 2, 16000);
	Perform(true, 2);
	}

	// Asynchronous test, ACM is fed with data then secondary coder is registered.
	// Mono input, mono primary WB 20 ms frame.
	TEST_F(DualStreamTest,
	DISABLED_ON_ANDROID(BitExactAsyncMonoInputMonoPrimaryWb20Ms)) {
	InitializeSender(20, 1, 16000);
	Perform(false, 1);
	}

	// Mono input, mono primary WB 20 ms frame.
	TEST_F(DualStreamTest,
	DISABLED_ON_ANDROID(BitExactAsyncMonoInputMonoPrimaryWb40Ms)) {
	InitializeSender(40, 1, 16000);
	Perform(false, 1);
	}

	TEST_F(DualStreamTest, DISABLED_ON_ANDROID(Api)) {
	PopulateCodecInstances(20, 1, 16000);
	CodecInst my_codec;
	ASSERT_EQ(0, acm_dual_stream_->InitializeSender());
	ASSERT_EQ(-1, acm_dual_stream_->SecondarySendCodec(&my_codec));

	// Not allowed to register secondary codec if primary is not registered yet.
	ASSERT_EQ(-1,
	acm_dual_stream_->RegisterSecondarySendCodec(secondary_encoder_));
	ASSERT_EQ(-1, acm_dual_stream_->SecondarySendCodec(&my_codec));

	ASSERT_EQ(0, acm_dual_stream_->RegisterSendCodec(primary_encoder_));

	ASSERT_EQ(0, acm_dual_stream_->SetVAD(true, true, VADNormal));

	// Make sure vad is activated.
	bool vad_status;
	bool dtx_status;
	ACMVADMode vad_mode;
	EXPECT_EQ(0, acm_dual_stream_->VAD(&vad_status, &dtx_status, &vad_mode));
	EXPECT_TRUE(vad_status);
	EXPECT_TRUE(dtx_status);
	EXPECT_EQ(VADNormal, vad_mode);

	ASSERT_EQ(0,
	acm_dual_stream_->RegisterSecondarySendCodec(secondary_encoder_));

	ASSERT_EQ(0, acm_dual_stream_->SecondarySendCodec(&my_codec));
	ASSERT_EQ(0, memcmp(&my_codec, &secondary_encoder_, sizeof(my_codec)));

	// Test if VAD get disabled after registering secondary codec.
	EXPECT_EQ(0, acm_dual_stream_->VAD(&vad_status, &dtx_status, &vad_mode));
	EXPECT_FALSE(vad_status);
	EXPECT_FALSE(dtx_status);

	// Activating VAD should fail.
	ASSERT_EQ(-1, acm_dual_stream_->SetVAD(true, true, VADNormal));

	// Unregister secondary encoder and it should be possible to activate VAD.
	acm_dual_stream_->UnregisterSecondarySendCodec();
	// Should fail.
	ASSERT_EQ(-1, acm_dual_stream_->SecondarySendCodec(&my_codec));

	ASSERT_EQ(0, acm_dual_stream_->SetVAD(true, true, VADVeryAggr));
	// Make sure VAD is activated.
	EXPECT_EQ(0, acm_dual_stream_->VAD(&vad_status, &dtx_status, &vad_mode));
	EXPECT_TRUE(vad_status);
	EXPECT_TRUE(dtx_status);
	EXPECT_EQ(VADVeryAggr, vad_mode);
	}

	} // namespace webrtc