1 files changed, 148 insertions, 0 deletions
diff --git a/third_party/libwebrtc/modules/audio_coding/codecs/opus/audio_decoder_multi_channel_opus_unittest.cc b/third_party/libwebrtc/modules/audio_coding/codecs/opus/audio_decoder_multi_channel_opus_unittest.cc
new file mode 100644
index 0000000000..57e2107f3c
--- /dev/null
+++ b/third_party/libwebrtc/modules/audio_coding/codecs/opus/audio_decoder_multi_channel_opus_unittest.cc
@@ -0,0 +1,148 @@
+/*
+ *  Copyright (c) 2019 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 "api/audio_codecs/opus/audio_decoder_multi_channel_opus.h"
+
+#include "modules/audio_coding/codecs/opus/audio_coder_opus_common.h"
+#include "test/gmock.h"
+#include "test/gtest.h"
+
+namespace webrtc {
+using ::testing::NiceMock;
+using ::testing::Return;
+
+TEST(AudioDecoderMultiOpusTest, GetFormatParameter) {
+  const SdpAudioFormat sdp_format("multiopus", 48000, 4,
+                                  {{"channel_mapping", "0,1,2,3"},
+                                   {"coupled_streams", "2"},
+                                   {"num_streams", "2"}});
+
+  EXPECT_EQ(GetFormatParameter(sdp_format, "channel_mapping"),
+            absl::optional<std::string>("0,1,2,3"));
+
+  EXPECT_EQ(GetFormatParameter<int>(sdp_format, "coupled_streams"),
+            absl::optional<int>(2));
+
+  EXPECT_EQ(GetFormatParameter(sdp_format, "missing"), absl::nullopt);
+
+  EXPECT_EQ(GetFormatParameter<int>(sdp_format, "channel_mapping"),
+            absl::nullopt);
+}
+
+TEST(AudioDecoderMultiOpusTest, InvalidChannelMappings) {
+  {
+    // Can't use channel 3 if there are only 2 channels.
+    const SdpAudioFormat sdp_format("multiopus", 48000, 2,
+                                    {{"channel_mapping", "3,0"},
+                                     {"coupled_streams", "1"},
+                                     {"num_streams", "2"}});
+    const absl::optional<AudioDecoderMultiChannelOpus::Config> decoder_config =
+        AudioDecoderMultiChannelOpus::SdpToConfig(sdp_format);
+    EXPECT_FALSE(decoder_config.has_value());
+  }
+  {
+    // The mapping is too long. There are only 5 channels, but 6 elements in the
+    // mapping.
+    const SdpAudioFormat sdp_format("multiopus", 48000, 5,
+                                    {{"channel_mapping", "0,1,2,3,4,5"},
+                                     {"coupled_streams", "0"},
+                                     {"num_streams", "2"}});
+    const absl::optional<AudioDecoderMultiChannelOpus::Config> decoder_config =
+        AudioDecoderMultiChannelOpus::SdpToConfig(sdp_format);
+    EXPECT_FALSE(decoder_config.has_value());
+  }
+  {
+    // The mapping doesn't parse correctly.
+    const SdpAudioFormat sdp_format(
+        "multiopus", 48000, 5,
+        {{"channel_mapping", "0,1,two,3,4"}, {"coupled_streams", "0"}});
+    const absl::optional<AudioDecoderMultiChannelOpus::Config> decoder_config =
+        AudioDecoderMultiChannelOpus::SdpToConfig(sdp_format);
+    EXPECT_FALSE(decoder_config.has_value());
+  }
+}
+
+TEST(AudioDecoderMultiOpusTest, ValidSdpToConfigProducesCorrectConfig) {
+  const SdpAudioFormat sdp_format("multiopus", 48000, 4,
+                                  {{"channel_mapping", "3,1,2,0"},
+                                   {"coupled_streams", "2"},
+                                   {"num_streams", "2"}});
+
+  const absl::optional<AudioDecoderMultiChannelOpus::Config> decoder_config =
+      AudioDecoderMultiChannelOpus::SdpToConfig(sdp_format);
+
+  ASSERT_TRUE(decoder_config.has_value());
+  EXPECT_TRUE(decoder_config->IsOk());
+  EXPECT_EQ(decoder_config->coupled_streams, 2);
+  EXPECT_THAT(decoder_config->channel_mapping,
+              ::testing::ContainerEq(std::vector<unsigned char>({3, 1, 2, 0})));
+}
+
+TEST(AudioDecoderMultiOpusTest, InvalidSdpToConfigDoesNotProduceConfig) {
+  {
+    const SdpAudioFormat sdp_format("multiopus", 48000, 4,
+                                    {{"channel_mapping", "0,1,2,3"},
+                                     {"coupled_stream", "2"},
+                                     {"num_streams", "2"}});
+
+    const absl::optional<AudioDecoderMultiChannelOpus::Config> decoder_config =
+        AudioDecoderMultiChannelOpus::SdpToConfig(sdp_format);
+
+    EXPECT_FALSE(decoder_config.has_value());
+  }
+
+  {
+    const SdpAudioFormat sdp_format("multiopus", 48000, 4,
+                                    {{"channel_mapping", "0,1,2 3"},
+                                     {"coupled_streams", "2"},
+                                     {"num_streams", "2"}});
+
+    const absl::optional<AudioDecoderMultiChannelOpus::Config> decoder_config =
+        AudioDecoderMultiChannelOpus::SdpToConfig(sdp_format);
+
+    EXPECT_FALSE(decoder_config.has_value());
+  }
+}
+
+TEST(AudioDecoderMultiOpusTest, CodecsCanBeCreated) {
+  const SdpAudioFormat sdp_format("multiopus", 48000, 4,
+                                  {{"channel_mapping", "0,1,2,3"},
+                                   {"coupled_streams", "2"},
+                                   {"num_streams", "2"}});
+
+  const absl::optional<AudioDecoderMultiChannelOpus::Config> decoder_config =
+      AudioDecoderMultiChannelOpus::SdpToConfig(sdp_format);
+
+  ASSERT_TRUE(decoder_config.has_value());
+
+  const std::unique_ptr<AudioDecoder> opus_decoder =
+      AudioDecoderMultiChannelOpus::MakeAudioDecoder(*decoder_config);
+
+  EXPECT_TRUE(opus_decoder);
+}
+
+TEST(AudioDecoderMultiOpusTest, AdvertisedCodecsCanBeCreated) {
+  std::vector<AudioCodecSpec> specs;
+  AudioDecoderMultiChannelOpus::AppendSupportedDecoders(&specs);
+
+  EXPECT_FALSE(specs.empty());
+
+  for (const AudioCodecSpec& spec : specs) {
+    const absl::optional<AudioDecoderMultiChannelOpus::Config> decoder_config =
+        AudioDecoderMultiChannelOpus::SdpToConfig(spec.format);
+    ASSERT_TRUE(decoder_config.has_value());
+
+    const std::unique_ptr<AudioDecoder> opus_decoder =
+        AudioDecoderMultiChannelOpus::MakeAudioDecoder(*decoder_config);
+
+    EXPECT_TRUE(opus_decoder);
+  }
+}
+}  // namespace webrtc