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/*
* 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_encoder_factory.h"
#include <memory>
#include <optional>
#include <vector>
#include "api/audio_codecs/audio_codec_pair_id.h"
#include "api/audio_codecs/audio_encoder.h"
#include "api/audio_codecs/audio_encoder_factory.h"
#include "api/audio_codecs/audio_encoder_factory_template.h"
#include "api/audio_codecs/audio_format.h"
#include "api/audio_codecs/opus/audio_encoder_multi_channel_opus.h"
#include "api/audio_codecs/opus/audio_encoder_opus.h"
#include "api/field_trials_view.h"
#include "api/scoped_refptr.h"
namespace webrtc {
namespace {
// Modify an audio encoder to not advertise support for anything.
template <typename T>
struct NotAdvertised {
using Config = typename T::Config;
static std::optional<Config> SdpToConfig(const SdpAudioFormat& audio_format) {
return T::SdpToConfig(audio_format);
}
static void AppendSupportedEncoders(
std::vector<AudioCodecSpec>* /* specs */) {
// Don't advertise support for anything.
}
static AudioCodecInfo QueryAudioEncoder(const Config& config) {
return T::QueryAudioEncoder(config);
}
static std::unique_ptr<AudioEncoder> MakeAudioEncoder(
const Config& config,
int payload_type,
std::optional<AudioCodecPairId> codec_pair_id = std::nullopt,
const FieldTrialsView* field_trials = nullptr) {
return T::MakeAudioEncoder(config, payload_type, codec_pair_id,
field_trials);
}
};
} // namespace
scoped_refptr<AudioEncoderFactory> CreateOpusAudioEncoderFactory() {
return CreateAudioEncoderFactory<
AudioEncoderOpus, NotAdvertised<AudioEncoderMultiChannelOpus>>();
}
} // namespace webrtc
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