Merge two files with AudioEncoderOpus tests

webrtc/modules/audio_coding/codecs/opus/audio_encoder_mutable_opus_test.cc

-/*
- *  Copyright (c) 2015 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.
- */
-
-// TODO(kwiberg): Merge these tests into audio_encoder_opus_unittest.cc
-
-#include "testing/gtest/include/gtest/gtest.h"
-#include "webrtc/common_types.h"
-#include "webrtc/modules/audio_coding/codecs/opus/interface/audio_encoder_opus.h"
-
-namespace webrtc {
-namespace acm2 {
-
-#ifdef WEBRTC_CODEC_OPUS
-namespace {
-const CodecInst kDefaultOpusCodecInst = {105, "opus", 48000, 960, 1, 32000};
-}  // namespace
-
-class AudioEncoderMutableOpusTest : public ::testing::Test {
- protected:
-  AudioEncoderMutableOpusTest() : codec_inst_(kDefaultOpusCodecInst) {}
-
-  void CreateCodec(int num_channels) {
-    codec_inst_.channels = num_channels;
-    encoder_.reset(new AudioEncoderOpus(codec_inst_));
-    auto expected_app =
-        num_channels == 1 ? AudioEncoderOpus::kVoip : AudioEncoderOpus::kAudio;
-    EXPECT_EQ(expected_app, encoder_->application());
-  }
-
-  CodecInst codec_inst_;
-  rtc::scoped_ptr<AudioEncoderOpus> encoder_;
-};
-
-TEST_F(AudioEncoderMutableOpusTest, DefaultApplicationModeMono) {
-  CreateCodec(1);
-}
-
-TEST_F(AudioEncoderMutableOpusTest, DefaultApplicationModeStereo) {
-  CreateCodec(2);
-}
-
-TEST_F(AudioEncoderMutableOpusTest, ChangeApplicationMode) {
-  CreateCodec(2);
-  EXPECT_TRUE(encoder_->SetApplication(AudioEncoder::Application::kSpeech));
-  EXPECT_EQ(AudioEncoderOpus::kVoip, encoder_->application());
-}
-
-TEST_F(AudioEncoderMutableOpusTest, ResetWontChangeApplicationMode) {
-  CreateCodec(2);
-
-  // Trigger a reset.
-  encoder_->Reset();
-  // Verify that the mode is still kAudio.
-  EXPECT_EQ(AudioEncoderOpus::kAudio, encoder_->application());
-
-  // Now change to kVoip.
-  EXPECT_TRUE(encoder_->SetApplication(AudioEncoder::Application::kSpeech));
-  EXPECT_EQ(AudioEncoderOpus::kVoip, encoder_->application());
-
-  // Trigger a reset again.
-  encoder_->Reset();
-  // Verify that the mode is still kVoip.
-  EXPECT_EQ(AudioEncoderOpus::kVoip, encoder_->application());
-}
-
-TEST_F(AudioEncoderMutableOpusTest, ToggleDtx) {
-  CreateCodec(2);
-  // Enable DTX
-  EXPECT_TRUE(encoder_->SetDtx(true));
-  // Verify that the mode is still kAudio.
-  EXPECT_EQ(AudioEncoderOpus::kAudio, encoder_->application());
-  // Turn off DTX.
-  EXPECT_TRUE(encoder_->SetDtx(false));
-}
-
-TEST_F(AudioEncoderMutableOpusTest, SetBitrate) {
-  CreateCodec(1);
-  // Constants are replicated from audio_encoder_opus.cc.
-  const int kMinBitrateBps = 500;
-  const int kMaxBitrateBps = 512000;
-  // Set a too low bitrate.
-  encoder_->SetTargetBitrate(kMinBitrateBps - 1);
-  EXPECT_EQ(kMinBitrateBps, encoder_->GetTargetBitrate());
-  // Set a too high bitrate.
-  encoder_->SetTargetBitrate(kMaxBitrateBps + 1);
-  EXPECT_EQ(kMaxBitrateBps, encoder_->GetTargetBitrate());
-  // Set the minimum rate.
-  encoder_->SetTargetBitrate(kMinBitrateBps);
-  EXPECT_EQ(kMinBitrateBps, encoder_->GetTargetBitrate());
-  // Set the maximum rate.
-  encoder_->SetTargetBitrate(kMaxBitrateBps);
-  EXPECT_EQ(kMaxBitrateBps, encoder_->GetTargetBitrate());
-  // Set rates from 1000 up to 32000 bps.
-  for (int rate = 1000; rate <= 32000; rate += 1000) {
-    encoder_->SetTargetBitrate(rate);
-    EXPECT_EQ(rate, encoder_->GetTargetBitrate());
-  }
-}
-#endif  // WEBRTC_CODEC_OPUS
-
-}  // namespace acm2
-}  // namespace webrtc