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102 lines
3.1 KiB
102 lines
3.1 KiB
/*
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* Copyright (C) 2018 Knowles Electronics
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef _TUNNEL_H_
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#define _TUNNEL_H_
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#if __cplusplus
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extern "C"
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{
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#endif
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struct ia_tunneling_hal;
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/**
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* Opens up the tunnel port and sets it up to start the tunneling of data
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*
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* Input - buffering size
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* If buffering size is non-zero, then set Non Buffering Flag
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* Output - Handle to Tunneling HAL
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* - NULL on failure, non null on success
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*/
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struct ia_tunneling_hal* ia_start_tunneling(int buffering_size);
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/**
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* Enable the tunneling of the data for a particular tunnel id and a source id
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*
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* Input - tun_hdl - Handle to the Tunneling HAL.
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* src_id - Source system ID for this tunnel
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* tunl_mode - tunnel out in sync or async mode.
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* tunl_encode -tunnel encoding format.
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*
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* Output - Zero on success, errno on failure.
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*/
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int ia_enable_tunneling_source(struct ia_tunneling_hal *tun_hdl,
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unsigned int src_id,
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unsigned int tunl_mode,
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unsigned int tunl_encode);
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/**
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* Disable the tunneling of the data for a particular tunnel id and a source id
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*
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* Input - tun_hdl - Handle to the Tunneling HAL.
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* src_id - Source system ID for this tunnel
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* tunl_mode - tunnel out in sync or async mode.
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* tunl_encode -tunnel encoding format.
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*
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* Output - Zero on success, errno on failure.
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*/
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int ia_disable_tunneling_source(struct ia_tunneling_hal *tun_hdl,
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unsigned int src_id,
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unsigned int tunl_mode,
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unsigned int tunl_encode);
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/**
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* Get the tunneled data. This data is an interleaved data from all the tunnels that were
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* enabled.
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*
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* Input - tun_hdl - Handle to the Tunneling HAL.
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* buf - buffer in which the data will be filled.
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* buf_size - Size of the buffer buf
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* Output - Number of bytes filled into the buffer
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*/
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int ia_read_tunnel_data(struct ia_tunneling_hal *tun_hdl, void *buf, int buf_size);
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/**
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* Set the output buffer threshold for the event generation.
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*
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* Input - threshold
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*
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* Output - Zero on success, errno on failure.
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*/
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int ia_set_tunnel_out_buf_threshold(struct ia_tunneling_hal *thdl,
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uint32_t threshold);
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/**
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* Closes tunneling port
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*
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* Input - tun_hdl - Handle to the Tunneling HAL.
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* Output - Zero on success, errno on failure.
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*/
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int ia_stop_tunneling(struct ia_tunneling_hal *tun_hdl);
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#if __cplusplus
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} // extern "C"
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#endif
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#endif
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