1 /* 2 * Copyright (c) 2019 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 MODULES_AUDIO_CODING_CODECS_OPUS_AUDIO_DECODER_MULTI_CHANNEL_OPUS_IMPL_H_ 12 #define MODULES_AUDIO_CODING_CODECS_OPUS_AUDIO_DECODER_MULTI_CHANNEL_OPUS_IMPL_H_ 13 14 #include <stddef.h> 15 16 #include <memory> 17 #include <vector> 18 19 #include "api/audio_codecs/audio_decoder.h" 20 #include "api/audio_codecs/audio_format.h" 21 #include "api/audio_codecs/opus/audio_decoder_multi_channel_opus_config.h" 22 #include "modules/audio_coding/codecs/opus/opus_interface.h" 23 #include "rtc_base/buffer.h" 24 25 namespace webrtc { 26 27 class AudioDecoderMultiChannelOpusImpl final : public AudioDecoder { 28 public: 29 static std::unique_ptr<AudioDecoderMultiChannelOpusImpl> MakeAudioDecoder( 30 AudioDecoderMultiChannelOpusConfig config); 31 32 ~AudioDecoderMultiChannelOpusImpl() override; 33 34 AudioDecoderMultiChannelOpusImpl(const AudioDecoderMultiChannelOpusImpl&) = 35 delete; 36 AudioDecoderMultiChannelOpusImpl& operator=( 37 const AudioDecoderMultiChannelOpusImpl&) = delete; 38 39 std::vector<ParseResult> ParsePayload(rtc::Buffer&& payload, 40 uint32_t timestamp) override; 41 void Reset() override; 42 int PacketDuration(const uint8_t* encoded, size_t encoded_len) const override; 43 int PacketDurationRedundant(const uint8_t* encoded, 44 size_t encoded_len) const override; 45 bool PacketHasFec(const uint8_t* encoded, size_t encoded_len) const override; 46 int SampleRateHz() const override; 47 size_t Channels() const override; 48 49 static absl::optional<AudioDecoderMultiChannelOpusConfig> SdpToConfig( 50 const SdpAudioFormat& format); 51 52 protected: 53 int DecodeInternal(const uint8_t* encoded, 54 size_t encoded_len, 55 int sample_rate_hz, 56 int16_t* decoded, 57 SpeechType* speech_type) override; 58 int DecodeRedundantInternal(const uint8_t* encoded, 59 size_t encoded_len, 60 int sample_rate_hz, 61 int16_t* decoded, 62 SpeechType* speech_type) override; 63 64 private: 65 AudioDecoderMultiChannelOpusImpl(OpusDecInst* dec_state, 66 AudioDecoderMultiChannelOpusConfig config); 67 68 OpusDecInst* dec_state_; 69 const AudioDecoderMultiChannelOpusConfig config_; 70 }; 71 72 } // namespace webrtc 73 74 #endif // MODULES_AUDIO_CODING_CODECS_OPUS_AUDIO_DECODER_MULTI_CHANNEL_OPUS_IMPL_H_ 75