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/*
* Copyright (c) 2016 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/builtin_audio_decoder_factory.h"
#include <memory>
#include "test/gtest.h"
namespace webrtc {
TEST(AudioDecoderFactoryTest, CreateUnknownDecoder) {
rtc::scoped_refptr<AudioDecoderFactory> adf =
CreateBuiltinAudioDecoderFactory();
ASSERT_TRUE(adf);
EXPECT_FALSE(
adf->MakeAudioDecoder(SdpAudioFormat("rey", 8000, 1), absl::nullopt));
}
TEST(AudioDecoderFactoryTest, CreatePcmu) {
rtc::scoped_refptr<AudioDecoderFactory> adf =
CreateBuiltinAudioDecoderFactory();
ASSERT_TRUE(adf);
// PCMu supports 8 kHz, and any number of channels.
EXPECT_FALSE(
adf->MakeAudioDecoder(SdpAudioFormat("pcmu", 8000, 0), absl::nullopt));
EXPECT_TRUE(
adf->MakeAudioDecoder(SdpAudioFormat("pcmu", 8000, 1), absl::nullopt));
EXPECT_TRUE(
adf->MakeAudioDecoder(SdpAudioFormat("pcmu", 8000, 2), absl::nullopt));
EXPECT_TRUE(
adf->MakeAudioDecoder(SdpAudioFormat("pcmu", 8000, 3), absl::nullopt));
EXPECT_FALSE(
adf->MakeAudioDecoder(SdpAudioFormat("pcmu", 16000, 1), absl::nullopt));
}
TEST(AudioDecoderFactoryTest, CreatePcma) {
rtc::scoped_refptr<AudioDecoderFactory> adf =
CreateBuiltinAudioDecoderFactory();
ASSERT_TRUE(adf);
// PCMa supports 8 kHz, and any number of channels.
EXPECT_FALSE(
adf->MakeAudioDecoder(SdpAudioFormat("pcma", 8000, 0), absl::nullopt));
EXPECT_TRUE(
adf->MakeAudioDecoder(SdpAudioFormat("pcma", 8000, 1), absl::nullopt));
EXPECT_TRUE(
adf->MakeAudioDecoder(SdpAudioFormat("pcma", 8000, 2), absl::nullopt));
EXPECT_TRUE(
adf->MakeAudioDecoder(SdpAudioFormat("pcma", 8000, 3), absl::nullopt));
EXPECT_FALSE(
adf->MakeAudioDecoder(SdpAudioFormat("pcma", 16000, 1), absl::nullopt));
}
TEST(AudioDecoderFactoryTest, CreateIlbc) {
rtc::scoped_refptr<AudioDecoderFactory> adf =
CreateBuiltinAudioDecoderFactory();
ASSERT_TRUE(adf);
// iLBC supports 8 kHz, 1 channel.
EXPECT_FALSE(
adf->MakeAudioDecoder(SdpAudioFormat("ilbc", 8000, 0), absl::nullopt));
#ifdef WEBRTC_CODEC_ILBC
EXPECT_TRUE(
adf->MakeAudioDecoder(SdpAudioFormat("ilbc", 8000, 1), absl::nullopt));
#endif
EXPECT_FALSE(
adf->MakeAudioDecoder(SdpAudioFormat("ilbc", 8000, 2), absl::nullopt));
EXPECT_FALSE(
adf->MakeAudioDecoder(SdpAudioFormat("ilbc", 16000, 1), absl::nullopt));
}
TEST(AudioDecoderFactoryTest, CreateL16) {
rtc::scoped_refptr<AudioDecoderFactory> adf =
CreateBuiltinAudioDecoderFactory();
ASSERT_TRUE(adf);
// L16 supports any clock rate and any number of channels up to 24.
const int clockrates[] = {8000, 16000, 32000, 48000};
const int num_channels[] = {1, 2, 3, 24};
for (int clockrate : clockrates) {
EXPECT_FALSE(adf->MakeAudioDecoder(SdpAudioFormat("l16", clockrate, 0),
absl::nullopt));
for (int channels : num_channels) {
EXPECT_TRUE(adf->MakeAudioDecoder(
SdpAudioFormat("l16", clockrate, channels), absl::nullopt));
}
}
}
// Tests that using more channels than the maximum does not work
TEST(AudioDecoderFactoryTest, MaxNrOfChannels) {
rtc::scoped_refptr<AudioDecoderFactory> adf =
CreateBuiltinAudioDecoderFactory();
std::vector<std::string> codecs = {
#ifdef WEBRTC_CODEC_OPUS
"opus",
#endif
#ifdef WEBRTC_CODEC_ILBC
"ilbc",
#endif
"pcmu", "pcma", "l16", "G722", "G711",
};
for (auto codec : codecs) {
EXPECT_FALSE(adf->MakeAudioDecoder(
SdpAudioFormat(codec, 32000, AudioDecoder::kMaxNumberOfChannels + 1),
absl::nullopt));
}
}
TEST(AudioDecoderFactoryTest, CreateG722) {
rtc::scoped_refptr<AudioDecoderFactory> adf =
CreateBuiltinAudioDecoderFactory();
ASSERT_TRUE(adf);
// g722 supports 8 kHz, 1-2 channels.
EXPECT_FALSE(
adf->MakeAudioDecoder(SdpAudioFormat("g722", 8000, 0), absl::nullopt));
EXPECT_TRUE(
adf->MakeAudioDecoder(SdpAudioFormat("g722", 8000, 1), absl::nullopt));
EXPECT_TRUE(
adf->MakeAudioDecoder(SdpAudioFormat("g722", 8000, 2), absl::nullopt));
EXPECT_FALSE(
adf->MakeAudioDecoder(SdpAudioFormat("g722", 8000, 3), absl::nullopt));
EXPECT_FALSE(
adf->MakeAudioDecoder(SdpAudioFormat("g722", 16000, 1), absl::nullopt));
EXPECT_FALSE(
adf->MakeAudioDecoder(SdpAudioFormat("g722", 32000, 1), absl::nullopt));
// g722 actually uses a 16 kHz sample rate instead of the nominal 8 kHz.
std::unique_ptr<AudioDecoder> dec =
adf->MakeAudioDecoder(SdpAudioFormat("g722", 8000, 1), absl::nullopt);
EXPECT_EQ(16000, dec->SampleRateHz());
}
TEST(AudioDecoderFactoryTest, CreateOpus) {
rtc::scoped_refptr<AudioDecoderFactory> adf =
CreateBuiltinAudioDecoderFactory();
ASSERT_TRUE(adf);
// Opus supports 48 kHz, 2 channels, and wants a "stereo" parameter whose
// value is either "0" or "1".
for (int hz : {8000, 16000, 32000, 48000}) {
for (int channels : {0, 1, 2, 3}) {
for (std::string stereo : {"XX", "0", "1", "2"}) {
CodecParameterMap params;
if (stereo != "XX") {
params["stereo"] = stereo;
}
const bool good = (hz == 48000 && channels == 2 &&
(stereo == "XX" || stereo == "0" || stereo == "1"));
EXPECT_EQ(good,
static_cast<bool>(adf->MakeAudioDecoder(
SdpAudioFormat("opus", hz, channels, std::move(params)),
absl::nullopt)));
}
}
}
}
} // namespace webrtc
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