AcmReceiver: Ask NetEq to delete all decoders at once instead of one by one

webrtc/modules/audio_coding/neteq/decoder_database_unittest.cc

 /*
  *  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.
  */
 
@@ skipping 29 matching lines @@
   EXPECT_EQ(
       DecoderDatabase::kOK,
       db.RegisterPayload(kPayloadType, NetEqDecoder::kDecoderPCMu, kCodecName));
   EXPECT_EQ(1, db.Size());
   EXPECT_FALSE(db.Empty());
   EXPECT_EQ(DecoderDatabase::kOK, db.Remove(kPayloadType));
   EXPECT_EQ(0, db.Size());
   EXPECT_TRUE(db.Empty());
 }
 
+TEST(DecoderDatabase, InsertAndRemoveAll) {
+  DecoderDatabase db(new rtc::RefCountedObject<MockAudioDecoderFactory>);
+  const std::string kCodecName1 = "Robert\'); DROP TABLE Students;";
+  const std::string kCodecName2 = "https://xkcd.com/327/";
+  EXPECT_EQ(DecoderDatabase::kOK,
+            db.RegisterPayload(0, NetEqDecoder::kDecoderPCMu, kCodecName1));
+  EXPECT_EQ(DecoderDatabase::kOK,
+            db.RegisterPayload(1, NetEqDecoder::kDecoderPCMa, kCodecName2));
+  EXPECT_EQ(2, db.Size());
+  EXPECT_FALSE(db.Empty());
+  db.RemoveAll();
+  EXPECT_EQ(0, db.Size());
+  EXPECT_TRUE(db.Empty());
+}
+
 TEST(DecoderDatabase, GetDecoderInfo) {
   rtc::scoped_refptr<MockAudioDecoderFactory> factory(
       new rtc::RefCountedObject<MockAudioDecoderFactory>);
   auto* decoder = new MockAudioDecoder;
   EXPECT_CALL(*factory, MakeAudioDecoderMock(_, _))
       .WillOnce(Invoke([decoder](const SdpAudioFormat& format,
                                  std::unique_ptr<AudioDecoder>* dec) {
         EXPECT_EQ("pcmu", format.name);
         dec->reset(decoder);
       }));
@@ skipping 189 matching lines @@
   EXPECT_EQ(DecoderDatabase::kOK, db.Remove(13));
   EXPECT_EQ(NULL, db.GetActiveCngDecoder());
 
   // Try to set non-existing codecs as active.
   EXPECT_EQ(DecoderDatabase::kDecoderNotFound,
             db.SetActiveDecoder(17, &changed));
   EXPECT_EQ(DecoderDatabase::kDecoderNotFound,
             db.SetActiveCngDecoder(17));
 }
 }  // namespace webrtc