| /* |
| * 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_ISAC_MAIN_INTERFACE_AUDIO_ENCODER_ISAC_H_ |
| #define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_INTERFACE_AUDIO_ENCODER_ISAC_H_ |
| |
| #include <vector> |
| |
| #include "webrtc/base/thread_annotations.h" |
| #include "webrtc/modules/audio_coding/codecs/audio_decoder.h" |
| #include "webrtc/modules/audio_coding/codecs/audio_encoder.h" |
| #include "webrtc/modules/audio_coding/codecs/isac/main/interface/isac.h" |
| #include "webrtc/system_wrappers/interface/scoped_ptr.h" |
| |
| namespace webrtc { |
| |
| class CriticalSectionWrapper; |
| |
| class AudioEncoderDecoderIsac : public AudioEncoder, public AudioDecoder { |
| public: |
| // For constructing an encoder in instantaneous mode. Allowed combinations |
| // are |
| // - 16000 Hz, 30 ms, 10000-32000 bps |
| // - 16000 Hz, 60 ms, 10000-32000 bps |
| // - 32000 Hz, 30 ms, 10000-56000 bps |
| struct Config { |
| Config(); |
| bool IsOk() const; |
| int payload_type; |
| int sample_rate_hz; |
| int frame_size_ms; |
| int bit_rate; // Limit on the short-term average bit rate, in bits/second. |
| }; |
| |
| // For constructing an encoder in channel-adaptive mode. The sample rate must |
| // be 16000 Hz; the initial frame size can be 30 or 60 ms; and the initial bit |
| // rate can be 10000-56000 bps. |
| struct ConfigAdaptive { |
| ConfigAdaptive(); |
| bool IsOk() const; |
| int payload_type; |
| int sample_rate_hz; |
| int initial_frame_size_ms; |
| int initial_bit_rate; |
| bool enforce_frame_size; // Prevent adaptive changes to the frame size? |
| }; |
| |
| explicit AudioEncoderDecoderIsac(const Config& config); |
| explicit AudioEncoderDecoderIsac(const ConfigAdaptive& config); |
| virtual ~AudioEncoderDecoderIsac() OVERRIDE; |
| |
| // AudioEncoder public methods. |
| virtual int sample_rate_hz() const OVERRIDE; |
| virtual int num_channels() const OVERRIDE; |
| virtual int Num10MsFramesInNextPacket() const OVERRIDE; |
| virtual int Max10MsFramesInAPacket() const OVERRIDE; |
| |
| // AudioDecoder methods. |
| virtual int Decode(const uint8_t* encoded, |
| size_t encoded_len, |
| int16_t* decoded, |
| SpeechType* speech_type) OVERRIDE; |
| virtual int DecodeRedundant(const uint8_t* encoded, |
| size_t encoded_len, |
| int16_t* decoded, |
| SpeechType* speech_type) OVERRIDE; |
| virtual bool HasDecodePlc() const OVERRIDE; |
| virtual int DecodePlc(int num_frames, int16_t* decoded) OVERRIDE; |
| virtual int Init() OVERRIDE; |
| virtual int IncomingPacket(const uint8_t* payload, |
| size_t payload_len, |
| uint16_t rtp_sequence_number, |
| uint32_t rtp_timestamp, |
| uint32_t arrival_timestamp) OVERRIDE; |
| virtual int ErrorCode() OVERRIDE; |
| |
| protected: |
| // AudioEncoder protected method. |
| virtual bool EncodeInternal(uint32_t timestamp, |
| const int16_t* audio, |
| size_t max_encoded_bytes, |
| uint8_t* encoded, |
| EncodedInfo* info) OVERRIDE; |
| |
| private: |
| const int payload_type_; |
| |
| // iSAC encoder/decoder state, guarded by a mutex to ensure that encode calls |
| // from one thread won't clash with decode calls from another thread. |
| const scoped_ptr<CriticalSectionWrapper> lock_; |
| ISACStruct* isac_state_ GUARDED_BY(lock_); |
| |
| // Have we accepted input but not yet emitted it in a packet? |
| bool packet_in_progress_; |
| |
| // Timestamp of the first input of the currently in-progress packet. |
| uint32_t packet_timestamp_; |
| |
| DISALLOW_COPY_AND_ASSIGN(AudioEncoderDecoderIsac); |
| }; |
| |
| } // namespace webrtc |
| #endif // WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_INTERFACE_AUDIO_ENCODER_ISAC_H_ |