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cd013b1d59
- Add `WebRTC-Audio-OpusDecodeStereoByDefault` field trial - Behind that field trial, `AudioDecoderOpus::SdpToConfig` uses 2 instead of 1 as default number of channels when the `stereo` codec param is unspecified - Instead of wiring up `FieldTrialsView` to `SdpToConfig`, which requires API changes that break downstream projects, a change in `AudioDecoderOpus::Config` is made to signal when the number of channels is forced via SDP config Bug: webrtc:379996136 Change-Id: If70eb19bc7e3bc74dd0423610cb04ae33ea602fe Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/368860 Commit-Queue: Alessio Bazzica <alessiob@webrtc.org> Reviewed-by: Tomas Gunnarsson <tommi@webrtc.org> Reviewed-by: Jakob Ivarsson <jakobi@webrtc.org> Cr-Commit-Position: refs/heads/main@{#43440}
49 lines
1.7 KiB
C++
49 lines
1.7 KiB
C++
/*
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* Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef API_AUDIO_CODECS_OPUS_AUDIO_DECODER_OPUS_H_
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#define API_AUDIO_CODECS_OPUS_AUDIO_DECODER_OPUS_H_
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#include <memory>
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#include <optional>
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#include <vector>
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#include "api/audio_codecs/audio_codec_pair_id.h"
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#include "api/audio_codecs/audio_decoder.h"
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#include "api/audio_codecs/audio_format.h"
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#include "api/environment/environment.h"
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#include "rtc_base/system/rtc_export.h"
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namespace webrtc {
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// Opus decoder API for use as a template parameter to
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// CreateAudioDecoderFactory<...>().
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struct RTC_EXPORT AudioDecoderOpus {
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struct Config {
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bool IsOk() const; // Checks if the values are currently OK.
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int sample_rate_hz = 48000;
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std::optional<int> num_channels;
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};
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static std::optional<Config> SdpToConfig(const SdpAudioFormat& audio_format);
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static void AppendSupportedDecoders(std::vector<AudioCodecSpec>* specs);
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static std::unique_ptr<AudioDecoder> MakeAudioDecoder(const Environment& env,
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Config config);
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static std::unique_ptr<AudioDecoder> MakeAudioDecoder(
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const Environment& env,
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Config config,
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std::optional<AudioCodecPairId> /*codec_pair_id*/) {
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return MakeAudioDecoder(env, config);
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}
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};
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} // namespace webrtc
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#endif // API_AUDIO_CODECS_OPUS_AUDIO_DECODER_OPUS_H_
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