233 lines
8.0 KiB
C++
233 lines
8.0 KiB
C++
/*
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* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "modules/audio_coding/test/TestRedFec.h"
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#include <memory>
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#include <utility>
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#include "absl/strings/match.h"
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#include "api/audio_codecs/L16/audio_decoder_L16.h"
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#include "api/audio_codecs/L16/audio_encoder_L16.h"
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#include "api/audio_codecs/audio_decoder_factory_template.h"
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#include "api/audio_codecs/audio_encoder_factory_template.h"
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#include "api/audio_codecs/g711/audio_decoder_g711.h"
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#include "api/audio_codecs/g711/audio_encoder_g711.h"
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#include "api/audio_codecs/g722/audio_decoder_g722.h"
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#include "api/audio_codecs/g722/audio_encoder_g722.h"
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#include "api/audio_codecs/isac/audio_decoder_isac_float.h"
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#include "api/audio_codecs/isac/audio_encoder_isac_float.h"
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#include "api/audio_codecs/opus/audio_decoder_opus.h"
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#include "api/audio_codecs/opus/audio_encoder_opus.h"
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#include "modules/audio_coding/codecs/cng/audio_encoder_cng.h"
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#include "modules/audio_coding/codecs/red/audio_encoder_copy_red.h"
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#include "modules/audio_coding/include/audio_coding_module_typedefs.h"
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#include "rtc_base/strings/string_builder.h"
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#include "test/gtest.h"
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#include "test/testsupport/file_utils.h"
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namespace webrtc {
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TestRedFec::TestRedFec()
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: encoder_factory_(CreateAudioEncoderFactory<AudioEncoderG711,
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AudioEncoderG722,
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AudioEncoderIsacFloat,
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AudioEncoderL16,
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AudioEncoderOpus>()),
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decoder_factory_(CreateAudioDecoderFactory<AudioDecoderG711,
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AudioDecoderG722,
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AudioDecoderIsacFloat,
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AudioDecoderL16,
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AudioDecoderOpus>()),
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_acmA(AudioCodingModule::Create(
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AudioCodingModule::Config(decoder_factory_))),
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_acmB(AudioCodingModule::Create(
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AudioCodingModule::Config(decoder_factory_))),
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_channelA2B(NULL),
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_testCntr(0) {}
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TestRedFec::~TestRedFec() {
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if (_channelA2B != NULL) {
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delete _channelA2B;
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_channelA2B = NULL;
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}
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}
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void TestRedFec::Perform() {
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const std::string file_name =
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webrtc::test::ResourcePath("audio_coding/testfile32kHz", "pcm");
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_inFileA.Open(file_name, 32000, "rb");
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ASSERT_EQ(0, _acmA->InitializeReceiver());
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ASSERT_EQ(0, _acmB->InitializeReceiver());
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// Create and connect the channel
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_channelA2B = new Channel;
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_acmA->RegisterTransportCallback(_channelA2B);
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_channelA2B->RegisterReceiverACM(_acmB.get());
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RegisterSendCodec(_acmA, {"L16", 8000, 1}, Vad::kVadAggressive, true);
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OpenOutFile(_testCntr);
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Run();
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_outFileB.Close();
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// Switch to another 8 kHz codec; RED should remain switched on.
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RegisterSendCodec(_acmA, {"PCMU", 8000, 1}, Vad::kVadAggressive, true);
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OpenOutFile(_testCntr);
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Run();
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_outFileB.Close();
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// Switch to a 16 kHz codec; RED should be switched off.
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RegisterSendCodec(_acmA, {"G722", 8000, 1}, Vad::kVadAggressive, false);
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OpenOutFile(_testCntr);
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RegisterSendCodec(_acmA, {"G722", 8000, 1}, Vad::kVadAggressive, false);
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Run();
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RegisterSendCodec(_acmA, {"G722", 8000, 1}, Vad::kVadAggressive, false);
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Run();
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_outFileB.Close();
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RegisterSendCodec(_acmA, {"ISAC", 16000, 1}, Vad::kVadVeryAggressive, false);
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OpenOutFile(_testCntr);
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Run();
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_outFileB.Close();
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// Switch to a 32 kHz codec; RED should be switched off.
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RegisterSendCodec(_acmA, {"ISAC", 32000, 1}, Vad::kVadVeryAggressive, false);
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OpenOutFile(_testCntr);
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Run();
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_outFileB.Close();
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RegisterSendCodec(_acmA, {"ISAC", 32000, 1}, absl::nullopt, false);
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_channelA2B->SetFECTestWithPacketLoss(true);
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// Following tests are under packet losses.
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// Switch to a 16 kHz codec; RED should be switched off.
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RegisterSendCodec(_acmA, {"G722", 8000, 1}, Vad::kVadAggressive, false);
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OpenOutFile(_testCntr);
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Run();
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_outFileB.Close();
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// Switch to a 16 kHz codec, RED should have been switched off.
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RegisterSendCodec(_acmA, {"ISAC", 16000, 1}, Vad::kVadVeryAggressive, false);
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OpenOutFile(_testCntr);
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Run();
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_outFileB.Close();
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// Switch to a 32 kHz codec, RED should have been switched off.
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RegisterSendCodec(_acmA, {"ISAC", 32000, 1}, Vad::kVadVeryAggressive, false);
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OpenOutFile(_testCntr);
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Run();
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_outFileB.Close();
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RegisterSendCodec(_acmA, {"ISAC", 32000, 1}, absl::nullopt, false);
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RegisterSendCodec(_acmA, {"opus", 48000, 2}, absl::nullopt, false);
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// _channelA2B imposes 25% packet loss rate.
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EXPECT_EQ(0, _acmA->SetPacketLossRate(25));
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_acmA->ModifyEncoder([&](std::unique_ptr<AudioEncoder>* enc) {
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EXPECT_EQ(true, (*enc)->SetFec(true));
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});
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OpenOutFile(_testCntr);
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Run();
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// Switch to L16 with RED.
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RegisterSendCodec(_acmA, {"L16", 8000, 1}, absl::nullopt, true);
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Run();
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// Switch to Opus again.
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RegisterSendCodec(_acmA, {"opus", 48000, 2}, absl::nullopt, false);
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_acmA->ModifyEncoder([&](std::unique_ptr<AudioEncoder>* enc) {
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EXPECT_EQ(true, (*enc)->SetFec(false));
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});
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Run();
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_acmA->ModifyEncoder([&](std::unique_ptr<AudioEncoder>* enc) {
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EXPECT_EQ(true, (*enc)->SetFec(true));
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});
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_outFileB.Close();
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}
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void TestRedFec::RegisterSendCodec(
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const std::unique_ptr<AudioCodingModule>& acm,
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const SdpAudioFormat& codec_format,
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absl::optional<Vad::Aggressiveness> vad_mode,
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bool use_red) {
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constexpr int payload_type = 17, cn_payload_type = 27, red_payload_type = 37;
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const auto& other_acm = &acm == &_acmA ? _acmB : _acmA;
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auto encoder = encoder_factory_->MakeAudioEncoder(payload_type, codec_format,
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absl::nullopt);
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EXPECT_NE(encoder, nullptr);
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std::map<int, SdpAudioFormat> receive_codecs = {{payload_type, codec_format}};
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if (!absl::EqualsIgnoreCase(codec_format.name, "opus")) {
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if (vad_mode.has_value()) {
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AudioEncoderCngConfig config;
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config.speech_encoder = std::move(encoder);
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config.num_channels = 1;
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config.payload_type = cn_payload_type;
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config.vad_mode = vad_mode.value();
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encoder = CreateComfortNoiseEncoder(std::move(config));
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receive_codecs.emplace(std::make_pair(
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cn_payload_type, SdpAudioFormat("CN", codec_format.clockrate_hz, 1)));
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}
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if (use_red) {
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AudioEncoderCopyRed::Config config;
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config.payload_type = red_payload_type;
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config.speech_encoder = std::move(encoder);
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encoder = std::make_unique<AudioEncoderCopyRed>(std::move(config));
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receive_codecs.emplace(
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std::make_pair(red_payload_type,
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SdpAudioFormat("red", codec_format.clockrate_hz, 1)));
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}
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}
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acm->SetEncoder(std::move(encoder));
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other_acm->SetReceiveCodecs(receive_codecs);
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}
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void TestRedFec::Run() {
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AudioFrame audioFrame;
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int32_t outFreqHzB = _outFileB.SamplingFrequency();
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// Set test length to 500 ms (50 blocks of 10 ms each).
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_inFileA.SetNum10MsBlocksToRead(50);
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// Fast-forward 1 second (100 blocks) since the file starts with silence.
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_inFileA.FastForward(100);
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while (!_inFileA.EndOfFile()) {
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EXPECT_GT(_inFileA.Read10MsData(audioFrame), 0);
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EXPECT_GE(_acmA->Add10MsData(audioFrame), 0);
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bool muted;
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EXPECT_EQ(0, _acmB->PlayoutData10Ms(outFreqHzB, &audioFrame, &muted));
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ASSERT_FALSE(muted);
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_outFileB.Write10MsData(audioFrame.data(), audioFrame.samples_per_channel_);
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}
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_inFileA.Rewind();
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}
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void TestRedFec::OpenOutFile(int16_t test_number) {
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std::string file_name;
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rtc::StringBuilder file_stream;
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file_stream << webrtc::test::OutputPath();
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file_stream << "TestRedFec_outFile_";
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file_stream << test_number << ".pcm";
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file_name = file_stream.str();
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_outFileB.Open(file_name, 16000, "wb");
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}
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} // namespace webrtc
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