Home | History | Annotate | Download | only in isac 
      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 WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_AUDIO_DECODER_ISAC_T_IMPL_H_
     12 #define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_AUDIO_DECODER_ISAC_T_IMPL_H_
     13 
     14 #include "webrtc/modules/audio_coding/codecs/isac/main/include/audio_decoder_isac.h"
     15 
     16 #include "webrtc/base/checks.h"
     17 
     18 namespace webrtc {
     19 
     20 template <typename T>
     21 AudioDecoderIsacT<T>::AudioDecoderIsacT()
     22     : AudioDecoderIsacT(nullptr) {}
     23 
     24 template <typename T>
     25 AudioDecoderIsacT<T>::AudioDecoderIsacT(LockedIsacBandwidthInfo* bwinfo)
     26     : bwinfo_(bwinfo), decoder_sample_rate_hz_(-1) {
     27   RTC_CHECK_EQ(0, T::Create(&isac_state_));
     28   T::DecoderInit(isac_state_);
     29   if (bwinfo_) {
     30     IsacBandwidthInfo bi;
     31     T::GetBandwidthInfo(isac_state_, &bi);
     32     bwinfo_->Set(bi);
     33   }
     34 }
     35 
     36 template <typename T>
     37 AudioDecoderIsacT<T>::~AudioDecoderIsacT() {
     38   RTC_CHECK_EQ(0, T::Free(isac_state_));
     39 }
     40 
     41 template <typename T>
     42 int AudioDecoderIsacT<T>::DecodeInternal(const uint8_t* encoded,
     43                                          size_t encoded_len,
     44                                          int sample_rate_hz,
     45                                          int16_t* decoded,
     46                                          SpeechType* speech_type) {
     47   RTC_CHECK(sample_rate_hz == 16000 || sample_rate_hz == 32000)
     48       << "Unsupported sample rate " << sample_rate_hz;
     49   if (sample_rate_hz != decoder_sample_rate_hz_) {
     50     RTC_CHECK_EQ(0, T::SetDecSampRate(isac_state_, sample_rate_hz));
     51     decoder_sample_rate_hz_ = sample_rate_hz;
     52   }
     53   int16_t temp_type = 1;  // Default is speech.
     54   int ret =
     55       T::DecodeInternal(isac_state_, encoded, encoded_len, decoded, &temp_type);
     56   *speech_type = ConvertSpeechType(temp_type);
     57   return ret;
     58 }
     59 
     60 template <typename T>
     61 bool AudioDecoderIsacT<T>::HasDecodePlc() const {
     62   return false;
     63 }
     64 
     65 template <typename T>
     66 size_t AudioDecoderIsacT<T>::DecodePlc(size_t num_frames, int16_t* decoded) {
     67   return T::DecodePlc(isac_state_, decoded, num_frames);
     68 }
     69 
     70 template <typename T>
     71 void AudioDecoderIsacT<T>::Reset() {
     72   T::DecoderInit(isac_state_);
     73 }
     74 
     75 template <typename T>
     76 int AudioDecoderIsacT<T>::IncomingPacket(const uint8_t* payload,
     77                                          size_t payload_len,
     78                                          uint16_t rtp_sequence_number,
     79                                          uint32_t rtp_timestamp,
     80                                          uint32_t arrival_timestamp) {
     81   int ret = T::UpdateBwEstimate(isac_state_, payload, payload_len,
     82                                 rtp_sequence_number, rtp_timestamp,
     83                                 arrival_timestamp);
     84   if (bwinfo_) {
     85     IsacBandwidthInfo bwinfo;
     86     T::GetBandwidthInfo(isac_state_, &bwinfo);
     87     bwinfo_->Set(bwinfo);
     88   }
     89   return ret;
     90 }
     91 
     92 template <typename T>
     93 int AudioDecoderIsacT<T>::ErrorCode() {
     94   return T::GetErrorCode(isac_state_);
     95 }
     96 
     97 template <typename T>
     98 size_t AudioDecoderIsacT<T>::Channels() const {
     99   return 1;
    100 }
    101 
    102 }  // namespace webrtc
    103 
    104 #endif  // WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_AUDIO_DECODER_ISAC_T_IMPL_H_
    105