| /****************************************************************************** |
| * |
| * Copyright 2022 Google LLC |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at: |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| ******************************************************************************/ |
| |
| /** |
| * LC3 - Packet Loss Concealment |
| * |
| * Reference : Low Complexity Communication Codec (LC3) |
| * Bluetooth Specification v1.0 |
| */ |
| |
| #ifndef __LC3_PLC_H |
| #define __LC3_PLC_H |
| |
| #include "common.h" |
| |
| |
| /** |
| * Reset PLC state |
| * plc PLC State to reset |
| */ |
| void lc3_plc_reset(lc3_plc_state_t *plc); |
| |
| /** |
| * Suspend PLC synthesis (Error-free frame decoded) |
| * plc PLC State |
| */ |
| void lc3_plc_suspend(lc3_plc_state_t *plc); |
| |
| /** |
| * Synthesis of a PLC frame |
| * dt, sr Duration and samplerate of the frame |
| * plc PLC State |
| * x Last good spectral coefficients |
| * y Return emulated ones |
| * |
| * `x` and `y` can be the same buffer |
| */ |
| void lc3_plc_synthesize(enum lc3_dt dt, enum lc3_srate sr, |
| lc3_plc_state_t *plc, const float *x, float *y); |
| |
| |
| #endif /* __LC3_PLC_H */ |
