1 /* 2 * Copyright (c) 2015 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_OPUS_H_ 12 #define MODULES_AUDIO_CODING_CODECS_OPUS_AUDIO_DECODER_OPUS_H_ 13 14 #include <stddef.h> 15 #include <stdint.h> 16 17 #include <vector> 18 19 #include "api/audio_codecs/audio_decoder.h" 20 #include "modules/audio_coding/codecs/opus/opus_interface.h" 21 #include "rtc_base/buffer.h" 22 23 namespace webrtc { 24 25 class AudioDecoderOpusImpl final : public AudioDecoder { 26 public: 27 explicit AudioDecoderOpusImpl(size_t num_channels, 28 int sample_rate_hz = 48000); 29 ~AudioDecoderOpusImpl() override; 30 31 AudioDecoderOpusImpl(const AudioDecoderOpusImpl&) = delete; 32 AudioDecoderOpusImpl& operator=(const AudioDecoderOpusImpl&) = delete; 33 34 std::vector<ParseResult> ParsePayload(rtc::Buffer&& payload, 35 uint32_t timestamp) override; 36 void Reset() override; 37 int PacketDuration(const uint8_t* encoded, size_t encoded_len) const override; 38 int PacketDurationRedundant(const uint8_t* encoded, 39 size_t encoded_len) const override; 40 bool PacketHasFec(const uint8_t* encoded, size_t encoded_len) const override; 41 int SampleRateHz() const override; 42 size_t Channels() const override; 43 44 protected: 45 int DecodeInternal(const uint8_t* encoded, 46 size_t encoded_len, 47 int sample_rate_hz, 48 int16_t* decoded, 49 SpeechType* speech_type) override; 50 int DecodeRedundantInternal(const uint8_t* encoded, 51 size_t encoded_len, 52 int sample_rate_hz, 53 int16_t* decoded, 54 SpeechType* speech_type) override; 55 56 private: 57 OpusDecInst* dec_state_; 58 const size_t channels_; 59 const int sample_rate_hz_; 60 }; 61 62 } // namespace webrtc 63 64 #endif // MODULES_AUDIO_CODING_CODECS_OPUS_AUDIO_DECODER_OPUS_H_ 65