| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| |
| #ifndef _HW_DRIVERS_I2S_DRIVER_H |
| #define _HW_DRIVERS_I2S_DRIVER_H |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| struct i2s; |
| struct i2s_cfg; |
| struct i2s_sample_buffer; |
| |
| /* Functions to be implemented by driver */ |
| |
| int i2s_create(struct i2s *i2s, const char *name, const struct i2s_cfg *cfg); |
| |
| int i2s_driver_start(struct i2s *i2s); |
| int i2s_driver_stop(struct i2s *i2s); |
| void i2s_driver_buffer_queued(struct i2s *i2s); |
| int i2s_driver_suspend(struct i2s *i2s, os_time_t timeout, int arg); |
| int i2s_driver_resume(struct i2s *i2s); |
| |
| /* Functions to be called by driver code */ |
| int i2s_init(struct i2s *i2s, struct i2s_buffer_pool *pool); |
| void i2s_driver_state_changed(struct i2s *i2s, enum i2s_state); |
| void i2s_driver_buffer_put(struct i2s *i2s, struct i2s_sample_buffer *buffer); |
| struct i2s_sample_buffer *i2s_driver_buffer_get(struct i2s *i2s); |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* _HW_DRIVERS_I2S_DRIVER_H */ |
