| /* |
| * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| #ifndef WEBRTC_MODULES_AUDIO_CODING_NETEQ_AUDIO_DECODER_IMPL_H_ |
| #define WEBRTC_MODULES_AUDIO_CODING_NETEQ_AUDIO_DECODER_IMPL_H_ |
| |
| #include <assert.h> |
| |
| #include "webrtc/engine_configurations.h" |
| #include "webrtc/base/constructormagic.h" |
| #include "webrtc/modules/audio_coding/codecs/audio_decoder.h" |
| #include "webrtc/modules/audio_coding/codecs/cng/include/webrtc_cng.h" |
| #ifdef WEBRTC_CODEC_G722 |
| #include "webrtc/modules/audio_coding/codecs/g722/include/g722_interface.h" |
| #endif |
| #include "webrtc/modules/audio_coding/main/acm2/rent_a_codec.h" |
| #include "webrtc/typedefs.h" |
| |
| namespace webrtc { |
| |
| // AudioDecoderCng is a special type of AudioDecoder. It inherits from |
| // AudioDecoder just to fit in the DecoderDatabase. None of the class methods |
| // should be used, except constructor, destructor, and accessors. |
| // TODO(hlundin): Consider the possibility to create a super-class to |
| // AudioDecoder that is stored in DecoderDatabase. Then AudioDecoder and a |
| // specific CngDecoder class could both inherit from that class. |
| class AudioDecoderCng : public AudioDecoder { |
| public: |
| explicit AudioDecoderCng(); |
| ~AudioDecoderCng() override; |
| void Reset() override; |
| int IncomingPacket(const uint8_t* payload, |
| size_t payload_len, |
| uint16_t rtp_sequence_number, |
| uint32_t rtp_timestamp, |
| uint32_t arrival_timestamp) override; |
| |
| CNG_dec_inst* CngDecoderInstance() override; |
| size_t Channels() const override; |
| |
| protected: |
| int DecodeInternal(const uint8_t* encoded, |
| size_t encoded_len, |
| int sample_rate_hz, |
| int16_t* decoded, |
| SpeechType* speech_type) override; |
| |
| private: |
| CNG_dec_inst* dec_state_; |
| RTC_DISALLOW_COPY_AND_ASSIGN(AudioDecoderCng); |
| }; |
| |
| using NetEqDecoder = acm2::RentACodec::NetEqDecoder; |
| |
| // Returns true if |codec_type| is supported. |
| bool CodecSupported(NetEqDecoder codec_type); |
| |
| // Returns the sample rate for |codec_type|. |
| int CodecSampleRateHz(NetEqDecoder codec_type); |
| |
| // Creates an AudioDecoder object of type |codec_type|. Returns NULL for for |
| // unsupported codecs, and when creating an AudioDecoder is not applicable |
| // (e.g., for RED and DTMF/AVT types). |
| AudioDecoder* CreateAudioDecoder(NetEqDecoder codec_type); |
| |
| } // namespace webrtc |
| #endif // WEBRTC_MODULES_AUDIO_CODING_NETEQ_AUDIO_DECODER_IMPL_H_ |