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173 lines
6.1 KiB
173 lines
6.1 KiB
4 months ago
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/******************************************************************************
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*
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* Copyright 2003-2016 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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/******************************************************************************
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*
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* VRCP internal header file.
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*
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******************************************************************************/
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#ifndef AVRC_INT_H
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#define AVRC_INT_H
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#include "osi/include/alarm.h"
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#include "osi/include/fixed_queue.h"
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#include "stack/avct/avct_defs.h"
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#include "stack/include/avrc_api.h"
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/* DEBUG FLAGS
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*
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* #define META_DEBUG_ENABLED
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*/
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/*****************************************************************************
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* Constants
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****************************************************************************/
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/* Number of attributes in AVRC SDP record. */
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#define AVRC_NUM_ATTR 6
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/* Number of protocol elements in protocol element list. */
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#define AVRC_NUM_PROTO_ELEMS 2
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#ifndef AVRC_MIN_CMD_LEN
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#define AVRC_MIN_CMD_LEN 20
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#endif
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#define AVRC_UNIT_OPRND_BYTES 5
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#define AVRC_SUB_OPRND_BYTES 4
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#define AVRC_SUBRSP_OPRND_BYTES 3
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#define AVRC_SUB_PAGE_MASK 7
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#define AVRC_SUB_PAGE_SHIFT 4
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#define AVRC_SUB_EXT_CODE 7
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#define AVRC_PASS_OP_ID_MASK 0x7F
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#define AVRC_PASS_STATE_MASK 0x80
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#define AVRC_CMD_OPRND_PAD 0xFF
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#define AVRC_CTYPE_MASK 0x0F
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#define AVRC_SUBTYPE_MASK 0xF8
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#define AVRC_SUBTYPE_SHIFT 3
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#define AVRC_SUBID_MASK 0x07
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#define AVRC_SUBID_IGNORE 0x07
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#define AVRC_SINGLE_PARAM_SIZE 1
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#define AVRC_METADATA_PKT_TYPE_MASK 0x03
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#define AVRC_PASS_THOUGH_MSG_MASK \
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0x80 /* MSB of msg_type indicates the PAS THROUGH msg */
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#define AVRC_VENDOR_UNIQUE_MASK 0x70 /* vendor unique id */
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/* Company ID is 24-bit integer We can not use the macros in bt_types.h */
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#define AVRC_CO_ID_TO_BE_STREAM(p, u32) \
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{ \
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*(p)++ = (uint8_t)((u32) >> 16); \
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*(p)++ = (uint8_t)((u32) >> 8); \
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*(p)++ = (uint8_t)(u32); \
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}
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#define AVRC_BE_STREAM_TO_CO_ID(u32, p) \
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{ \
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(u32) = (((uint32_t)(*((p) + 2))) + (((uint32_t)(*((p) + 1))) << 8) + \
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(((uint32_t)(*(p))) << 16)); \
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(p) += 3; \
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}
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#define AVRC_AVC_HDR_SIZE 3 /* ctype, subunit*, opcode */
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#define AVRC_MIN_META_HDR_SIZE 4 /* pdu id(1), packet type(1), param len(2) */
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#define AVRC_MIN_BROWSE_HDR_SIZE 3 /* pdu id(1), param len(2) */
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#define AVRC_VENDOR_HDR_SIZE 6 /* ctype, subunit*, opcode, CO_ID */
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#define AVRC_MSG_VENDOR_OFFSET 23
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#define AVRC_MIN_VENDOR_SIZE \
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(AVRC_MSG_VENDOR_OFFSET + BT_HDR_SIZE + AVRC_MIN_META_HDR_SIZE)
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#define AVRC_PASS_THRU_SIZE 8
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#define AVRC_MSG_PASS_THRU_OFFSET 25
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#define AVRC_MIN_PASS_THRU_SIZE (AVRC_MSG_PASS_THRU_OFFSET + BT_HDR_SIZE + 4)
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#define AVRC_MIN_BROWSE_SIZE \
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(AVCT_BROWSE_OFFSET + BT_HDR_SIZE + AVRC_MIN_BROWSE_HDR_SIZE)
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#define AVRC_CTRL_PKT_LEN(pf, pk) \
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{ (pf) = (uint8_t*)((pk) + 1) + (pk)->offset + 2; }
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#define AVRC_MAX_CTRL_DATA_LEN (AVRC_PACKET_LEN)
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/* Timeout for waiting for avrc command responses (in milliseconds) */
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#ifndef AVRC_CMD_TOUT_MS
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#define AVRC_CMD_TOUT_MS (2 * 1000)
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#endif
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/* Flags for avrc_cb.ccb_int[].flags */
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#define AVRC_CB_FLAGS_RSP_PENDING 0x01 /* Waiting for AVRC response */
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/*****************************************************************************
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* Type definitions
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****************************************************************************/
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/* type for Metadata fragmentation control block */
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typedef struct {
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BT_HDR* p_fmsg; /* the fragmented message */
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uint8_t frag_pdu; /* the PDU ID for fragmentation */
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bool frag_enabled; /* fragmentation flag */
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} tAVRC_FRAG_CB;
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/* type for Metadata re-assembly control block */
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typedef struct {
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BT_HDR* p_rmsg; /* the received message */
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uint16_t rasm_offset; /* re-assembly flag, the offset of the start fragment */
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uint8_t rasm_pdu; /* the PDU ID for re-assembly */
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} tAVRC_RASM_CB;
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/* AVRC internal connection control block */
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typedef struct {
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fixed_queue_t*
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cmd_q; /* Command queue for serializing vendor specific commands */
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uint8_t flags; /* See AVRC_CB_FLAGS_* definitions */
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alarm_t* tle; /* Command timeout timer */
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} tAVRC_CONN_INT_CB;
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typedef struct {
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tAVRC_CONN_CB
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ccb[AVCT_NUM_CONN]; /* Connection control block from AVRC_Open API */
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tAVRC_CONN_INT_CB
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ccb_int[AVCT_NUM_CONN]; /* Internal connection control block */
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tAVRC_FRAG_CB fcb[AVCT_NUM_CONN];
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tAVRC_RASM_CB rcb[AVCT_NUM_CONN];
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tAVRC_FIND_CBACK find_cback; /* sdp discovery callback */
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tSDP_DISCOVERY_DB* p_db; /* pointer to discovery database */
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uint16_t service_uuid; /* service UUID to search */
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uint8_t trace_level;
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} tAVRC_CB;
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/******************************************************************************
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* Main Control Block
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******************************************************************************/
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extern tAVRC_CB avrc_cb;
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extern bool avrc_is_valid_pdu_id(uint8_t pdu_id);
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extern bool avrc_is_valid_player_attrib_value(uint8_t attrib, uint8_t value);
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extern BT_HDR* avrc_alloc_ctrl_pkt(uint8_t pdu);
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extern tAVRC_STS avrc_pars_pass_thru(tAVRC_MSG_PASS* p_msg,
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uint16_t* p_vendor_unique_id);
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extern uint8_t avrc_opcode_from_pdu(uint8_t pdu);
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extern bool avrc_is_valid_opcode(uint8_t opcode);
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extern void avrc_flush_cmd_q(uint8_t handle);
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void avrc_start_cmd_timer(uint8_t handle, uint8_t label, uint8_t msg_mask);
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void avrc_send_next_vendor_cmd(uint8_t handle);
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#endif /* AVRC_INT_H */
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