Removed callback between old AudioConferenceMixer and OutputMixer. The audio frame with mixed audio…

webrtc/modules/audio_mixer/test/audio_mixer_unittest.cc

Index: webrtc/modules/audio_mixer/test/audio_mixer_unittest.cc
diff --git a/webrtc/modules/audio_mixer/test/audio_mixer_unittest.cc b/webrtc/modules/audio_mixer/test/audio_mixer_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..96a04276f2faf071f904a9f50c36b5f7703b3215
--- /dev/null
+++ b/webrtc/modules/audio_mixer/test/audio_mixer_unittest.cc
@@ -0,0 +1,244 @@
+/*
+ *  Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.

[tommi, 2016/07/06 19:42:17]

update this header (it's 2016)

[aleloi, 2016/07/07 09:20:16]

Done. I also updated the other files (they are copied from the old mixer to this
new directory and are planned to go through almost a complete rewrite).

+ *
+ *  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 <memory>
+
+#include "testing/gmock/include/gmock/gmock.h"
+
+#include "webrtc/modules/audio_conference_mixer/source/audio_frame_manipulator.h"
+#include "webrtc/modules/audio_mixer/audio_mixer.h"
+#include "webrtc/modules/audio_mixer/include/new_audio_conference_mixer.h"
+#include "webrtc/modules/audio_mixer/include/audio_mixer_defines.h"

[tommi, 2016/07/06 19:42:17]

fix include order.  git cl format could help.

[aleloi, 2016/07/07 09:20:16]

Done.

+#include "webrtc/modules/audio_mixer/source/new_audio_conference_mixer_impl.h"
+
+namespace webrtc {

[ivoc, 2016/07/07 13:46:16]

Move this below the "using" lines below.

[aleloi, 2016/07/07 14:29:12]

Done.

+
+using testing::_;
+using testing::AtLeast;
+using testing::Invoke;
+using testing::Return;
+
+using voe::AudioMixer;
+
+class MockMixerAudioSource : public MixerAudioSource {
+ public:
+  MockMixerAudioSource() {
+    ON_CALL(*this, GetAudioFrame(_, _))
+        .WillByDefault(Invoke(this, &MockMixerAudioSource::FakeAudioFrame));
+  }
+  MOCK_METHOD2(GetAudioFrame,
+               int32_t(const int32_t id, AudioFrame* audio_frame));
+  MOCK_CONST_METHOD1(NeededFrequency, int32_t(const int32_t id));
+  AudioFrame* fake_frame() { return &fake_frame_; }
+
+ private:
+  AudioFrame fake_frame_;
+  int32_t FakeAudioFrame(const int32_t id, AudioFrame* audio_frame) {
+    audio_frame->CopyFrom(fake_frame_);
+    return 0;
+  }
+};
+
+class BothMixersTest : public testing::Test {
+ protected:
+  BothMixersTest() {
+    // Create an OutputMixer.
+    AudioMixer::Create(audio_mixer_, kId);
+
+    // Create one mixer participant and add it to the mixer.
+    EXPECT_EQ(0, audio_mixer_->SetMixabilityStatus(participant_, true));
+
+    // Each iteration, the participant will return a frame with this content:
+    participant_.fake_frame()->id_ = 1;
+    participant_.fake_frame()->sample_rate_hz_ = kSampleRateHz;
+    participant_.fake_frame()->speech_type_ = AudioFrame::kNormalSpeech;
+    participant_.fake_frame()->vad_activity_ = AudioFrame::kVadActive;
+    participant_.fake_frame()->num_channels_ = 1;
+
+    // We modify one sample within the RampIn window and one sample
+    // outside of it.
+    participant_.fake_frame()->data_[10] = 100;
+    participant_.fake_frame()->data_[20] = -200;
+    participant_.fake_frame()->data_[30] = 300;
+    participant_.fake_frame()->data_[90] = -400;
+
+    // Frame duration 10ms.
+    participant_.fake_frame()->samples_per_channel_ = kSampleRateHz / 100;
+    EXPECT_CALL(participant_, NeededFrequency(_))
+        .WillRepeatedly(Return(kSampleRateHz));
+  }
+
+  ~BothMixersTest() { AudioMixer::Destroy(audio_mixer_); }
+
+  // Mark the participant as 'unmixed' last round.
+  void ResetParticipant() { participant_._mixHistory->SetIsMixed(false); }
+
+  AudioMixer* audio_mixer_;
+  MockMixerAudioSource participant_;
+  AudioFrame mixing_round_frame, mixed_results_frame_;
+
+  constexpr static int kSampleRateHz = 48000;
+  constexpr static int kId = 1;
+};
+
+TEST(AudioMixer, AnonymousAndNamed) {
+  const int kId = 1;

[tommi, 2016/07/06 19:42:17]

nit: make this 'static const int kId'.  For non static const variables (i.e.
non-compile-time-const) which might have different values per invocation of the
function, they don't follow the kFoo naming style, but rather regular
lower_case_with_underscore naming style.

[aleloi, 2016/07/07 09:20:16]

Done. The test was mostly copied from modules/audio_conference_mixer/test.

+  // Should not matter even if partipants are more than
+  // kMaximumAmountOfMixedParticipants.
+  const int kNamed =
+      NewAudioConferenceMixer::kMaximumAmountOfMixedParticipants + 1;
+  const int kAnonymous =
+      NewAudioConferenceMixer::kMaximumAmountOfMixedParticipants + 1;
+
+  std::unique_ptr<NewAudioConferenceMixer> mixer(
+      NewAudioConferenceMixer::Create(kId));
+
+  MockMixerAudioSource named[kNamed];
+  MockMixerAudioSource anonymous[kAnonymous];
+
+  for (int i = 0; i < kNamed; ++i) {
+    EXPECT_EQ(0, mixer->SetMixabilityStatus(&named[i], true));
+    EXPECT_TRUE(mixer->MixabilityStatus(named[i]));
+  }
+
+  for (int i = 0; i < kAnonymous; ++i) {
+    // Participant must be registered before turning it into anonymous.
+    EXPECT_EQ(-1, mixer->SetAnonymousMixabilityStatus(&anonymous[i], true));
+    EXPECT_EQ(0, mixer->SetMixabilityStatus(&anonymous[i], true));
+    EXPECT_TRUE(mixer->MixabilityStatus(anonymous[i]));
+    EXPECT_FALSE(mixer->AnonymousMixabilityStatus(anonymous[i]));
+
+    EXPECT_EQ(0, mixer->SetAnonymousMixabilityStatus(&anonymous[i], true));
+    EXPECT_TRUE(mixer->AnonymousMixabilityStatus(anonymous[i]));
+
+    // Anonymous participants do not show status by MixabilityStatus.
+    EXPECT_FALSE(mixer->MixabilityStatus(anonymous[i]));
+  }
+
+  for (int i = 0; i < kNamed; ++i) {
+    EXPECT_EQ(0, mixer->SetMixabilityStatus(&named[i], false));
+    EXPECT_FALSE(mixer->MixabilityStatus(named[i]));
+  }
+
+  for (int i = 0; i < kAnonymous - 1; i++) {
+    EXPECT_EQ(0, mixer->SetAnonymousMixabilityStatus(&anonymous[i], false));
+    EXPECT_FALSE(mixer->AnonymousMixabilityStatus(anonymous[i]));
+
+    // SetAnonymousMixabilityStatus(anonymous, false) moves anonymous to the
+    // named group.
+    EXPECT_TRUE(mixer->MixabilityStatus(anonymous[i]));
+  }
+
+  // SetMixabilityStatus(anonymous, false) will remove anonymous from both
+  // anonymous and named groups.
+  EXPECT_EQ(0, mixer->SetMixabilityStatus(&anonymous[kAnonymous - 1], false));
+  EXPECT_FALSE(mixer->AnonymousMixabilityStatus(anonymous[kAnonymous - 1]));
+  EXPECT_FALSE(mixer->MixabilityStatus(anonymous[kAnonymous - 1]));
+}
+
+TEST(AudioMixer, LargestEnergyVadActiveMixed) {
+  const int kId = 1;
+  const int kParticipants =
+      NewAudioConferenceMixer::kMaximumAmountOfMixedParticipants + 3;
+  const int kSampleRateHz = 32000;
+
+  std::unique_ptr<NewAudioConferenceMixer> mixer(
+      NewAudioConferenceMixer::Create(kId));
+
+  MockMixerAudioSource participants[kParticipants];
+
+  for (int i = 0; i < kParticipants; ++i) {
+    participants[i].fake_frame()->id_ = i;
+    participants[i].fake_frame()->sample_rate_hz_ = kSampleRateHz;
+    participants[i].fake_frame()->speech_type_ = AudioFrame::kNormalSpeech;
+    participants[i].fake_frame()->vad_activity_ = AudioFrame::kVadActive;
+    participants[i].fake_frame()->num_channels_ = 1;
+
+    // Frame duration 10ms.
+    participants[i].fake_frame()->samples_per_channel_ = kSampleRateHz / 100;
+
+    // We set the 80-th sample value since the first 80 samples may be
+    // modified by a ramped-in window.
+    participants[i].fake_frame()->data_[80] = i;
+
+    EXPECT_EQ(0, mixer->SetMixabilityStatus(&participants[i], true));
+    EXPECT_CALL(participants[i], GetAudioFrame(_, _)).Times(AtLeast(1));
+    EXPECT_CALL(participants[i], NeededFrequency(_))
+        .WillRepeatedly(Return(kSampleRateHz));
+  }
+
+  // Last participant gives audio frame with passive VAD, although it has the
+  // largest energy.
+  participants[kParticipants - 1].fake_frame()->vad_activity_ =
+      AudioFrame::kVadPassive;
+
+  AudioFrame audio_frame;
+  mixer->Mix(&audio_frame);
+
+  for (int i = 0; i < kParticipants; ++i) {
+    bool is_mixed = participants[i].IsMixed();
+    if (i == kParticipants - 1 ||
+        i < kParticipants - 1 -
+                NewAudioConferenceMixer::kMaximumAmountOfMixedParticipants) {
+      EXPECT_FALSE(is_mixed) << "Mixing status of Participant #" << i
+                             << " wrong.";
+    } else {
+      EXPECT_TRUE(is_mixed) << "Mixing status of Participant #" << i
+                            << " wrong.";
+    }
+  }
+}
+
+TEST_F(BothMixersTest, CompareInitialFrameAudio) {
+  EXPECT_CALL(participant_, GetAudioFrame(_, _)).Times(AtLeast(1));
+
+  // Make sure the participant is marked as 'non-mixed' so that it is
+  // ramped in next round.
+  ResetParticipant();
+
+  // Construct the expected sound for the first mixing round.
+  mixing_round_frame.CopyFrom(*participant_.fake_frame());
+  RampIn(mixing_round_frame);
+
+  // Mix frames and put the result into a frame.
+  audio_mixer_->MixActiveChannels();
+  audio_mixer_->GetMixedAudio(kSampleRateHz, 1, &mixed_results_frame_);
+
+  // Compare the received frame with the expected.
+  EXPECT_EQ(mixing_round_frame.sample_rate_hz_,
+            mixed_results_frame_.sample_rate_hz_);
+  EXPECT_EQ(mixing_round_frame.num_channels_,
+            mixed_results_frame_.num_channels_);
+  EXPECT_EQ(mixing_round_frame.samples_per_channel_,
+            mixed_results_frame_.samples_per_channel_);
+  EXPECT_EQ(0, memcmp(mixing_round_frame.data_, mixed_results_frame_.data_,
+                      sizeof(mixing_round_frame.data_)));
+}
+
+TEST_F(BothMixersTest, CompareSecondFrameAudio) {
+  EXPECT_CALL(participant_, GetAudioFrame(_, _)).Times(AtLeast(1));
+
+  // Make sure the participant is marked as 'non-mixed' so that it is
+  // ramped in next round.
+  ResetParticipant();
+
+  // Do one mixing iteration.
+  audio_mixer_->MixActiveChannels();
+
+  // Mix frames a second time and compare with the expected frame
+  // (which is the participant's frame).
+  audio_mixer_->MixActiveChannels();
+  audio_mixer_->GetMixedAudio(kSampleRateHz, 1, &mixed_results_frame_);
+  EXPECT_EQ(0,
+            memcmp(participant_.fake_frame()->data_, mixed_results_frame_.data_,
+                   sizeof(mixing_round_frame.data_)));
+}
+
+}  // namespace webrtc