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 * a2dp_sink.h 40 * 41 * Advanced Audio Distribution Transport Profile (A2DP) Sink 42 * 43 * A2DP Sink is a device that accepts streamed media data. 44 */ 45 46 #ifndef A2DP_SINK_H 47 #define A2DP_SINK_H 48 49 #include <stdint.h> 50 #include "classic/avdtp.h" 51 52 #if defined __cplusplus 53 extern "C" { 54 #endif 55 56 /* API_START */ 57 58 /** 59 * @brief Create A2DP Sink service record. 60 * @param service 61 * @param service_record_handle 62 * @param supported_features 16-bit bitmap, see AVDTP_SINK_SF_* values in avdtp.h 63 * @param service_name 64 * @param service_provider_name 65 */ 66 void a2dp_sink_create_sdp_record(uint8_t * service, uint32_t service_record_handle, uint16_t supported_features, const char * service_name, const char * service_provider_name); 67 68 /** 69 * @brief Initialize up A2DP Sink device. 70 */ 71 void a2dp_sink_init(void); 72 73 /** 74 * @brief Create a stream endpoint of type SINK, and register media codec by specifying its capabilities and the default configuration. 75 * @param media_type see avdtp_media_type_t values in avdtp.h (audio, video or multimedia) 76 * @param media_codec_type see avdtp_media_codec_type_t values in avdtp.h 77 * @param codec_capabilities media codec capabilities as defined in A2DP spec, section 4 - Audio Codec Interoperability Requirements. 78 * @param codec_capabilities_len media codec capabilities length 79 * @param codec_configuration default media codec configuration 80 * @param codec_configuration_len media codec configuration length 81 * 82 * @return local_stream_endpoint 83 */ 84 avdtp_stream_endpoint_t * a2dp_sink_create_stream_endpoint(avdtp_media_type_t media_type, avdtp_media_codec_type_t media_codec_type, 85 const uint8_t *codec_capabilities, uint16_t codec_capabilities_len, 86 uint8_t * codec_configuration, uint16_t codec_configuration_len); 87 88 /** 89 * @brief Unregister stream endpoint and free it's memory 90 * @param stream_endpoint created by a2dp_sink_create_stream_endpoint 91 */ 92 void a2dp_sink_finalize_stream_endpoint(avdtp_stream_endpoint_t * stream_endpoint); 93 94 /** 95 * @brief Register callback for the A2DP Sink client. It will receive following subevents of HCI_EVENT_A2DP_META HCI event type: 96 * - A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION: indicates from remote chosen SBC media codec configuration 97 * - A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION: indicates from remote chosen other then SBC media codec configuration 98 * - A2DP_SUBEVENT_STREAM_ESTABLISHED: received when stream to a remote device is established 99 * - A2DP_SUBEVENT_STREAM_STARTED: received when stream is started 100 * - A2DP_SUBEVENT_STREAM_SUSPENDED: received when stream is paused 101 * - A2DP_SUBEVENT_STREAM_STOPED: received when stream is aborted or stopped 102 * - A2DP_SUBEVENT_STREAM_RELEASED: received when stream is released 103 * - A2DP_SUBEVENT_SIGNALING_CONNECTION_RELEASED: received when signaling channel is disconnected 104 * 105 * @param callback 106 */ 107 void a2dp_sink_register_packet_handler(btstack_packet_handler_t callback); 108 109 /** 110 * @brief Register media handler for the A2DP Sink client. 111 * @param callback 112 * @param packet 113 * @param size 114 */ 115 void a2dp_sink_register_media_handler(void (*callback)(uint8_t local_seid, uint8_t *packet, uint16_t size)); 116 117 /** 118 * @brief Establish stream. 119 * @param remote 120 * @param local_seid ID of a local stream endpoint. 121 * @param out_a2dp_cid Assigned A2DP channel identifyer used for furhter A2DP commands. 122 */ 123 uint8_t a2dp_sink_establish_stream(bd_addr_t remote, uint8_t local_seid, uint16_t * out_a2dp_cid); 124 125 /** 126 * @brief Release stream and disconnect from remote. 127 * @param a2dp_cid A2DP channel identifyer. 128 */ 129 void a2dp_sink_disconnect(uint16_t a2dp_cid); 130 131 /** 132 * @brief De-Init A2DP Sink device. 133 */ 134 void a2dp_sink_deinit(void); 135 136 /* API_END */ 137 138 139 #if defined __cplusplus 140 } 141 #endif 142 143 #endif // A2DP_SINK_H 144