1 /* 2 * Copyright (C) 2021 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN 24 * GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 /** 39 * @title SCO Transport 40 * 41 * Hardware abstraction for PCM/I2S Inteface used for HSP/HFP profiles. 42 * 43 */ 44 45 #ifndef BTSTACK_SCO_TRANSPORT_H 46 #define BTSTACK_SCO_TRANSPORT_H 47 48 #include "btstack_config.h" 49 50 #include "bluetooth.h" 51 #include "btstack_defines.h" 52 53 #include <stdint.h> 54 55 #if defined __cplusplus 56 extern "C" { 57 #endif 58 59 typedef enum { 60 SCO_FORMAT_8_BIT, 61 SCO_FORMAT_16_BIT, 62 } sco_format_t; 63 64 /* API_START */ 65 66 typedef struct { 67 68 /** 69 * register packet handler for SCO HCI packets 70 */ 71 void (*register_packet_handler)(void (*handler)(uint8_t packet_type, uint8_t *packet, uint16_t size)); 72 73 /** 74 * open transport 75 * @param con_handle of SCO connection 76 * @param sco_format 77 */ 78 void (*open)(hci_con_handle_t con_handle, sco_format_t sco_format); 79 80 /** 81 * send SCO packet 82 */ 83 void (*send_packet)(const uint8_t *buffer, uint16_t length); 84 85 /** 86 * close transport 87 * @param con_handle of SCO connection 88 */ 89 void (*close)(hci_con_handle_t con_handle); 90 91 } btstack_sco_transport_t; 92 93 /* API_END */ 94 95 #if defined __cplusplus 96 } 97 #endif 98 99 #endif