1 /* 2 * Copyright (C) 2016 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 MATTHIAS 24 * RINGWALD 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 * avdtp_util.h 40 * 41 * Audio/Video Distribution Transport Protocol - Utils 42 * 43 */ 44 45 #ifndef __AVDTP_UITL_H 46 #define __AVDTP_UITL_H 47 48 #include <stdint.h> 49 #include "avdtp.h" 50 51 #if defined __cplusplus 52 extern "C" { 53 #endif 54 55 #define AVDTP_INVALID_SEP_INDEX 0xff 56 57 avdtp_connection_t * avdtp_connection_for_bd_addr(bd_addr_t addr, avdtp_context_t * context); 58 avdtp_connection_t * avdtp_connection_for_avdtp_cid(uint16_t l2cap_cid, avdtp_context_t * context); 59 avdtp_connection_t * avdtp_connection_for_l2cap_signaling_cid(uint16_t l2cap_cid, avdtp_context_t * context); 60 avdtp_stream_endpoint_t * avdtp_stream_endpoint_for_l2cap_cid(uint16_t l2cap_cid, avdtp_context_t * context); 61 avdtp_stream_endpoint_t * avdtp_stream_endpoint_with_seid(uint8_t seid, avdtp_context_t * context); 62 avdtp_stream_endpoint_t * avdtp_stream_endpoint_associated_with_acp_seid(uint16_t acp_seid, avdtp_context_t * context); 63 avdtp_stream_endpoint_t * avdtp_stream_endpoint_for_seid(uint16_t seid, avdtp_context_t * context); 64 avdtp_stream_endpoint_t * avdtp_stream_endpoint_for_signaling_cid(uint16_t l2cap_cid, avdtp_context_t * context); 65 66 static inline uint8_t avdtp_header(uint8_t tr_label, avdtp_packet_type_t packet_type, avdtp_message_type_t msg_type){ 67 return (tr_label<<4) | ((uint8_t)packet_type<<2) | (uint8_t)msg_type; 68 } 69 70 int avdtp_read_signaling_header(avdtp_signaling_packet_t * signaling_header, uint8_t * packet, uint16_t size); 71 72 uint8_t store_bit16(uint16_t bitmap, int position, uint8_t value); 73 int get_bit16(uint16_t bitmap, int position); 74 75 int avdtp_pack_service_capabilities(uint8_t * buffer, int size, avdtp_capabilities_t caps, avdtp_service_category_t category, uint8_t pack_all_capabilities); 76 uint16_t avdtp_unpack_service_capabilities(avdtp_connection_t * connection, avdtp_capabilities_t * caps, uint8_t * packet, uint16_t size); 77 78 void avdtp_prepare_capabilities(avdtp_signaling_packet_t * signaling_packet, uint8_t transaction_label, uint16_t registered_service_categories, avdtp_capabilities_t configuration, uint8_t identifier); 79 int avdtp_signaling_create_fragment(uint16_t cid, avdtp_signaling_packet_t * signaling_packet, uint8_t * out_buffer); 80 81 void avdtp_signaling_emit_connection_established(btstack_packet_handler_t callback, uint16_t avdtp_cid, bd_addr_t addr, uint8_t status); 82 void avdtp_streaming_emit_connection_established(btstack_packet_handler_t callback, uint16_t avdtp_cid, bd_addr_t addr, uint8_t int_seid, uint8_t acp_seid, uint8_t status); 83 84 void avdtp_signaling_emit_connection_released(btstack_packet_handler_t callback, uint16_t avdtp_cid); 85 void avdtp_streaming_emit_connection_released(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t local_seid); 86 87 void avdtp_signaling_emit_sep(btstack_packet_handler_t callback, uint16_t avdtp_cid, avdtp_sep_t sep); 88 void avdtp_signaling_emit_accept(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t seid, avdtp_signal_identifier_t identifier); 89 void avdtp_signaling_emit_general_reject(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t int_seid, avdtp_signal_identifier_t identifier); 90 void avdtp_signaling_emit_reject(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t int_seid, avdtp_signal_identifier_t identifier); 91 void avdtp_streaming_emit_can_send_media_packet_now(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t int_seid, uint16_t sequence_number); 92 93 void avdtp_signaling_emit_media_codec_sbc_capability(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t int_seid, uint8_t acp_seid, adtvp_media_codec_capabilities_t media_codec); 94 void avdtp_signaling_emit_media_codec_other_capability(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t int_seid, uint8_t acp_seid, adtvp_media_codec_capabilities_t media_codec); 95 void avdtp_signaling_emit_media_codec_sbc_configuration(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t int_seid, uint8_t acp_seid, avdtp_media_type_t media_type, const uint8_t * media_codec_information); 96 void avdtp_signaling_emit_media_codec_other_configuration(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t int_seid, uint8_t acp_seid, adtvp_media_codec_capabilities_t media_codec); 97 void avdtp_signaling_emit_media_codec_sbc_reconfiguration(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t int_seid, uint8_t acp_seid, avdtp_media_type_t media_type, const uint8_t * media_codec_information); 98 void avdtp_signaling_emit_media_codec_other_reconfiguration(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t int_seid, uint8_t acp_seid, adtvp_media_codec_capabilities_t media_codec); 99 100 void avdtp_request_can_send_now_acceptor(avdtp_connection_t * connection, uint16_t l2cap_cid); 101 void avdtp_request_can_send_now_initiator(avdtp_connection_t * connection, uint16_t l2cap_cid); 102 void avdtp_request_can_send_now_self(avdtp_connection_t * connection, uint16_t l2cap_cid); 103 104 uint8_t avdtp_get_index_of_remote_stream_endpoint_with_seid(avdtp_stream_endpoint_t * stream_endpoint, uint16_t acp_seid); 105 106 void avdtp_initialize_stream_endpoint(avdtp_stream_endpoint_t * stream_endpoint); 107 uint8_t avdtp_find_remote_sep(avdtp_connection_t * connection, uint8_t remote_seid); 108 109 // uint16_t avdtp_cid(avdtp_stream_endpoint_t * stream_endpoint); 110 uint8_t avdtp_local_seid(avdtp_stream_endpoint_t * stream_endpoint); 111 uint8_t avdtp_remote_seid(avdtp_stream_endpoint_t * stream_endpoint); 112 const char * avdtp_si2str(uint16_t index); 113 114 void a2dp_streaming_emit_connection_established(btstack_packet_handler_t callback, uint16_t cid, bd_addr_t addr, uint8_t local_seid, uint8_t remote_seid, uint8_t status); 115 116 #if defined __cplusplus 117 } 118 #endif 119 120 #endif // __AVDTP_UITL_H