| /* |
| * 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_ILBC_INTERFACE_AUDIO_ENCODER_ILBC_H_ |
| #define WEBRTC_MODULES_AUDIO_CODING_CODECS_ILBC_INTERFACE_AUDIO_ENCODER_ILBC_H_ |
| |
| #include "webrtc/base/scoped_ptr.h" |
| #include "webrtc/modules/audio_coding/codecs/audio_encoder.h" |
| #include "webrtc/modules/audio_coding/codecs/ilbc/interface/ilbc.h" |
| |
| namespace webrtc { |
| |
| struct CodecInst; |
| |
| class AudioEncoderIlbc final : public AudioEncoder { |
| public: |
| struct Config { |
| bool IsOk() const; |
| |
| int payload_type = 102; |
| int frame_size_ms = 30; // Valid values are 20, 30, 40, and 60 ms. |
| // Note that frame size 40 ms produces encodings with two 20 ms frames in |
| // them, and frame size 60 ms consists of two 30 ms frames. |
| }; |
| |
| explicit AudioEncoderIlbc(const Config& config); |
| explicit AudioEncoderIlbc(const CodecInst& codec_inst); |
| ~AudioEncoderIlbc() override; |
| |
| size_t MaxEncodedBytes() const override; |
| int SampleRateHz() const override; |
| int NumChannels() const override; |
| size_t Num10MsFramesInNextPacket() const override; |
| size_t Max10MsFramesInAPacket() const override; |
| int GetTargetBitrate() const override; |
| EncodedInfo EncodeInternal(uint32_t rtp_timestamp, |
| const int16_t* audio, |
| size_t max_encoded_bytes, |
| uint8_t* encoded) override; |
| void Reset() override; |
| |
| private: |
| size_t RequiredOutputSizeBytes() const; |
| |
| static const size_t kMaxSamplesPerPacket = 480; |
| const Config config_; |
| const size_t num_10ms_frames_per_packet_; |
| size_t num_10ms_frames_buffered_; |
| uint32_t first_timestamp_in_buffer_; |
| int16_t input_buffer_[kMaxSamplesPerPacket]; |
| IlbcEncoderInstance* encoder_; |
| }; |
| |
| } // namespace webrtc |
| #endif // WEBRTC_MODULES_AUDIO_CODING_CODECS_ILBC_INTERFACE_AUDIO_ENCODER_ILBC_H_ |