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142 lines
3.7 KiB
142 lines
3.7 KiB
/******************************************************************************
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*
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* Copyright 2007-2012 Broadcom Corporation
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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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******************************************************************************/
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#ifndef UIPC_H
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#define UIPC_H
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#include <mutex>
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#define UIPC_CH_ID_AV_CTRL 0
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#define UIPC_CH_ID_AV_AUDIO 1
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#define UIPC_CH_NUM 2
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#define UIPC_CH_ID_ALL 3 /* used to address all the ch id at once */
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#define DEFAULT_READ_POLL_TMO_MS 100
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typedef uint8_t tUIPC_CH_ID;
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/* Events generated */
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typedef enum {
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UIPC_OPEN_EVT = 0x0001,
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UIPC_CLOSE_EVT = 0x0002,
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UIPC_RX_DATA_EVT = 0x0004,
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UIPC_RX_DATA_READY_EVT = 0x0008,
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UIPC_TX_DATA_READY_EVT = 0x0010
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} tUIPC_EVENT;
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/*
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* UIPC IOCTL Requests
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*/
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#define UIPC_REQ_RX_FLUSH 1
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#define UIPC_REG_CBACK 2
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#define UIPC_REG_REMOVE_ACTIVE_READSET 3
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#define UIPC_SET_READ_POLL_TMO 4
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typedef void(tUIPC_RCV_CBACK)(
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tUIPC_CH_ID ch_id,
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tUIPC_EVENT event); /* points to BT_HDR which describes event type and
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length of data; len contains the number of bytes of
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entire message (sizeof(BT_HDR) + offset + size of
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data) */
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const char* dump_uipc_event(tUIPC_EVENT event);
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typedef struct {
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int srvfd;
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int fd;
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int read_poll_tmo_ms;
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int task_evt_flags; /* event flags pending to be processed in read task */
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tUIPC_RCV_CBACK* cback;
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} tUIPC_CHAN;
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struct tUIPC_STATE {
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pthread_t tid; /* main thread id */
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int running;
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std::recursive_mutex mutex;
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fd_set active_set;
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fd_set read_set;
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int max_fd;
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int signal_fds[2];
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tUIPC_CHAN ch[UIPC_CH_NUM];
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};
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/**
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* Initialize UIPC module
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*
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* @param user User ID who uses UIPC
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*/
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std::unique_ptr<tUIPC_STATE> UIPC_Init();
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/**
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* Open a UIPC channel
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*
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* @param ch_id Channel ID
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* @param p_cback Callback handler
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* @param socket_path Path to the socket
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* @return true on success, otherwise false
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*/
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bool UIPC_Open(tUIPC_STATE& uipc, tUIPC_CH_ID ch_id, tUIPC_RCV_CBACK* p_cback,
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const char* socket_path);
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/**
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* Closes a channel in UIPC or the entire UIPC module
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*
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* @param ch_id Channel ID; if ch_id is UIPC_CH_ID_ALL, then cleanup UIPC
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*/
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void UIPC_Close(tUIPC_STATE& uipc, tUIPC_CH_ID ch_id);
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/**
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* Send a message over UIPC
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*
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* @param ch_id Channel ID
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* @param msg_evt Message event type
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* @param p_buf Buffer for the message
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* @param msglen Message length
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* @return true on success, otherwise false
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*/
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bool UIPC_Send(tUIPC_STATE& uipc, tUIPC_CH_ID ch_id, uint16_t msg_evt,
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const uint8_t* p_buf, uint16_t msglen);
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/**
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* Read a message from UIPC
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*
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* @param ch_id Channel ID
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* @param p_msg_evt Message event type
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* @param p_buf Buffer for the message
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* @param len Bytes to read
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* @return true on success, otherwise false
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*/
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uint32_t UIPC_Read(tUIPC_STATE& uipc, tUIPC_CH_ID ch_id, uint16_t* p_msg_evt,
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uint8_t* p_buf, uint32_t len);
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/**
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* Control the UIPC parameter
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*
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* @param ch_id Channel ID
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* @param request Request type
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* @param param Optional parameters
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* @return true on success, otherwise false
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*/
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bool UIPC_Ioctl(tUIPC_STATE& uipc, tUIPC_CH_ID ch_id, uint32_t request,
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void* param);
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#endif /* UIPC_H */
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