1 /* 2 * Copyright (c) 2017 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #ifndef API_AUDIO_CODECS_OPUS_AUDIO_DECODER_OPUS_H_ 12 #define API_AUDIO_CODECS_OPUS_AUDIO_DECODER_OPUS_H_ 13 14 #include <memory> 15 #include <vector> 16 17 #include "absl/types/optional.h" 18 #include "api/audio_codecs/audio_codec_pair_id.h" 19 #include "api/audio_codecs/audio_decoder.h" 20 #include "api/audio_codecs/audio_format.h" 21 #include "api/field_trials_view.h" 22 #include "rtc_base/system/rtc_export.h" 23 24 namespace webrtc { 25 26 // Opus decoder API for use as a template parameter to 27 // CreateAudioDecoderFactory<...>(). 28 struct RTC_EXPORT AudioDecoderOpus { 29 struct Config { 30 bool IsOk() const; // Checks if the values are currently OK. 31 int sample_rate_hz = 48000; 32 int num_channels = 1; 33 }; 34 static absl::optional<Config> SdpToConfig(const SdpAudioFormat& audio_format); 35 static void AppendSupportedDecoders(std::vector<AudioCodecSpec>* specs); 36 static std::unique_ptr<AudioDecoder> MakeAudioDecoder( 37 Config config, 38 absl::optional<AudioCodecPairId> codec_pair_id = absl::nullopt, 39 const FieldTrialsView* field_trials = nullptr); 40 }; 41 42 } // namespace webrtc 43 44 #endif // API_AUDIO_CODECS_OPUS_AUDIO_DECODER_OPUS_H_ 45