Opus implementation of the AudioDecoderFactoryTemplate API

webrtc/api/audio_codecs/test/audio_decoder_factory_template_unittest.cc

 /*
  *  Copyright (c) 2017 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.
  */
 
 #include "webrtc/api/audio_codecs/audio_decoder_factory_template.h"
 #include "webrtc/api/audio_codecs/g722/audio_decoder_g722.h"
 #include "webrtc/api/audio_codecs/ilbc/audio_decoder_ilbc.h"
+#include "webrtc/api/audio_codecs/opus/audio_decoder_opus.h"
 #include "webrtc/base/ptr_util.h"
 #include "webrtc/test/gmock.h"
 #include "webrtc/test/gtest.h"
 #include "webrtc/test/mock_audio_decoder.h"
 
 namespace webrtc {
 
 namespace {
 
 struct BogusParams {
@@ skipping 114 matching lines @@
               testing::ElementsAre(
                   AudioCodecSpec{{"ILBC", 8000, 1}, {8000, 1, 13300}}));
   EXPECT_FALSE(factory->IsSupportedDecoder({"foo", 8000, 1}));
   EXPECT_TRUE(factory->IsSupportedDecoder({"ilbc", 8000, 1}));
   EXPECT_EQ(nullptr, factory->MakeAudioDecoder({"bar", 8000, 1}));
   auto dec = factory->MakeAudioDecoder({"ilbc", 8000, 1});
   ASSERT_NE(nullptr, dec);
   EXPECT_EQ(8000, dec->SampleRateHz());
 }
 
+TEST(AudioDecoderFactoryTemplateTest, Opus) {
+  auto factory = CreateAudioDecoderFactory<AudioDecoderOpus>();
+  AudioCodecInfo opus_info{48000, 1, 64000, 6000, 510000};
+  opus_info.allow_comfort_noise = false;
+  opus_info.supports_network_adaption = true;
+  const SdpAudioFormat opus_format(
+      {"opus", 48000, 2, {{"minptime", "10"}, {"useinbandfec", "1"}}});
+  EXPECT_THAT(factory->GetSupportedDecoders(),
+              testing::ElementsAre(AudioCodecSpec{opus_format, opus_info}));
+  EXPECT_FALSE(factory->IsSupportedDecoder({"opus", 48000, 1}));
+  EXPECT_TRUE(factory->IsSupportedDecoder({"opus", 48000, 2}));
+  EXPECT_EQ(nullptr, factory->MakeAudioDecoder({"bar", 16000, 1}));
+  auto dec = factory->MakeAudioDecoder({"opus", 48000, 2});
+  ASSERT_NE(nullptr, dec);
+  EXPECT_EQ(48000, dec->SampleRateHz());
+}
+
 }  // namespace webrtc