Let NetEq reset the AudioFrame during muted state

webrtc/modules/audio_coding/neteq/neteq_unittest.cc

 /*
  *  Copyright (c) 2011 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.
  */
 
@@ skipping 1318 matching lines @@
 };
 
 // Verifies that NetEq goes in and out of muted state as expected.
 TEST_F(NetEqDecodingTestWithMutedState, MutedState) {
   // Insert one speech packet.
   InsertPacket(0);
   // Pull out audio once and expect it not to be muted.
   EXPECT_FALSE(GetAudioReturnMuted());
   // Pull data until faded out.
   GetAudioUntilMuted();
+  EXPECT_TRUE(out_frame_.muted());
 
   // Verify that output audio is not written during muted mode. Other parameters
   // should be correct, though.
   AudioFrame new_frame;
   int16_t* frame_data = new_frame.mutable_data();
   for (size_t i = 0; i < AudioFrame::kMaxDataSizeSamples; i++) {
     frame_data[i] = 17;
   }
   bool muted;
   EXPECT_EQ(0, neteq_->GetAudio(&new_frame, &muted));
   EXPECT_TRUE(muted);
+  EXPECT_TRUE(out_frame_.muted());
   for (size_t i = 0; i < AudioFrame::kMaxDataSizeSamples; i++) {
     EXPECT_EQ(17, frame_data[i]);
   }
   EXPECT_EQ(out_frame_.timestamp_ + out_frame_.samples_per_channel_,
             new_frame.timestamp_);
   EXPECT_EQ(out_frame_.samples_per_channel_, new_frame.samples_per_channel_);
   EXPECT_EQ(out_frame_.sample_rate_hz_, new_frame.sample_rate_hz_);
   EXPECT_EQ(out_frame_.num_channels_, new_frame.num_channels_);
   EXPECT_EQ(out_frame_.speech_type_, new_frame.speech_type_);
   EXPECT_EQ(out_frame_.vad_activity_, new_frame.vad_activity_);
 
   // Insert new data. Timestamp is corrected for the time elapsed since the last
   // packet. Verify that normal operation resumes.
   InsertPacket(kSamples * counter_);
   GetAudioUntilNormal();
+  EXPECT_FALSE(out_frame_.muted());
 
   NetEqNetworkStatistics stats;
   EXPECT_EQ(0, neteq_->NetworkStatistics(&stats));
   // NetEqNetworkStatistics::expand_rate tells the fraction of samples that were
   // concealment samples, in Q14 (16384 = 100%) .The vast majority should be
   // concealment samples in this test.
   EXPECT_GT(stats.expand_rate, 14000);
   // And, it should be greater than the speech_expand_rate.
   EXPECT_GT(stats.expand_rate, stats.speech_expand_rate);
 }
@@ skipping 251 matching lines @@
   // Pull out data once.
   AudioFrame output;
   bool muted;
   ASSERT_EQ(0, neteq_->GetAudio(&output, &muted));
 
   EXPECT_EQ(std::vector<uint32_t>({kRtpTimestamp1, kRtpTimestamp2}),
             neteq_->LastDecodedTimestamps());
 }
 
 }  // namespace webrtc