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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_G711_AUDIO_DECODER_G711_H_
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#define API_AUDIO_CODECS_G711_AUDIO_DECODER_G711_H_
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#include <memory>
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#include <vector>
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#include "absl/types/optional.h"
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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/webrtc_key_value_config.h"
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#include "rtc_base/system/rtc_export.h"
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namespace webrtc {
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// G711 decoder API for use as a template parameter to
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// CreateAudioDecoderFactory<...>().
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struct RTC_EXPORT AudioDecoderG711 {
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struct Config {
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enum class Type { kPcmU, kPcmA };
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bool IsOk() const {
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return (type == Type::kPcmU || type == Type::kPcmA) &&
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num_channels >= 1 &&
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num_channels <= AudioDecoder::kMaxNumberOfChannels;
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}
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Type type;
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int num_channels;
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};
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static absl::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(
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const Config& config,
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absl::optional<AudioCodecPairId> codec_pair_id = absl::nullopt,
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const WebRtcKeyValueConfig* field_trials = nullptr);
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};
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} // namespace webrtc
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#endif // API_AUDIO_CODECS_G711_AUDIO_DECODER_G711_H_
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