| /* |
| * Copyright (c) 2014 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_CODECS_CNG_INCLUDE_AUDIO_ENCODER_CNG_H_ |
| #define WEBRTC_MODULES_AUDIO_CODING_CODECS_CNG_INCLUDE_AUDIO_ENCODER_CNG_H_ |
| |
| #include <vector> |
| |
| #include "webrtc/common_audio/vad/include/vad.h" |
| #include "webrtc/modules/audio_coding/codecs/audio_encoder.h" |
| #include "webrtc/modules/audio_coding/codecs/cng/include/webrtc_cng.h" |
| #include "webrtc/system_wrappers/interface/scoped_ptr.h" |
| |
| namespace webrtc { |
| |
| class Vad; |
| |
| class AudioEncoderCng : public AudioEncoder { |
| public: |
| struct Config { |
| Config(); |
| bool IsOk() const; |
| |
| int sample_rate_hz; |
| int num_channels; |
| int payload_type; |
| // Caller keeps ownership of the AudioEncoder object. |
| AudioEncoder* speech_encoder; |
| Vad::Aggressiveness vad_mode; |
| int sid_frame_interval_ms; |
| int num_cng_coefficients; |
| // The Vad pointer is mainly for testing. If a NULL pointer is passed, the |
| // AudioEncoderCng creates (and destroys) a Vad object internally. If an |
| // object is passed, the AudioEncoderCng assumes ownership of the Vad |
| // object. |
| Vad* vad; |
| }; |
| |
| explicit AudioEncoderCng(const Config& config); |
| |
| virtual ~AudioEncoderCng(); |
| |
| virtual int sample_rate_hz() const OVERRIDE; |
| virtual int num_channels() const OVERRIDE; |
| virtual int Num10MsFramesInNextPacket() const OVERRIDE; |
| virtual int Max10MsFramesInAPacket() const OVERRIDE; |
| |
| protected: |
| virtual bool EncodeInternal(uint32_t timestamp, |
| const int16_t* audio, |
| size_t max_encoded_bytes, |
| uint8_t* encoded, |
| EncodedInfo* info) OVERRIDE; |
| |
| private: |
| // Deleter for use with scoped_ptr. E.g., use as |
| // scoped_ptr<CNG_enc_inst, CngInstDeleter> cng_inst_; |
| struct CngInstDeleter { |
| inline void operator()(CNG_enc_inst* ptr) const { WebRtcCng_FreeEnc(ptr); } |
| }; |
| |
| bool EncodePassive(uint8_t* encoded, size_t* encoded_bytes); |
| |
| bool EncodeActive(size_t max_encoded_bytes, |
| uint8_t* encoded, |
| EncodedInfo* info); |
| |
| AudioEncoder* speech_encoder_; |
| const int sample_rate_hz_; |
| const int num_channels_; |
| const int cng_payload_type_; |
| const int num_cng_coefficients_; |
| std::vector<int16_t> speech_buffer_; |
| uint32_t first_timestamp_in_buffer_; |
| int frames_in_buffer_; |
| bool last_frame_active_; |
| scoped_ptr<Vad> vad_; |
| scoped_ptr<CNG_enc_inst, CngInstDeleter> cng_inst_; |
| }; |
| |
| } // namespace webrtc |
| #endif // WEBRTC_MODULES_AUDIO_CODING_CODECS_CNG_INCLUDE_AUDIO_ENCODER_CNG_H_ |