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_source.h 40 * 41 * Advanced Audio Distribution Transport Profile (A2DP) Source 42 * 43 * A2DP Source is a device that streames media data. 44 */ 45 46 #ifndef __A2DP_SOURCE_H 47 #define __A2DP_SOURCE_H 48 49 #include <stdint.h> 50 51 #if defined __cplusplus 52 extern "C" { 53 #endif 54 55 /* API_START */ 56 57 /** 58 * @brief Create A2DP Source service record. 59 * @param service 60 * @param service_record_handle 61 * @param supported_features 16-bit bitmap, see AVDTP_SOURCE_SF_* values in avdtp.h 62 * @param service_name 63 * @param service_provider_name 64 */ 65 void a2dp_source_create_sdp_record(uint8_t * service, uint32_t service_record_handle, uint16_t supported_features, const char * service_name, const char * service_provider_name); 66 67 /** 68 * @brief Initialize up A2DP Source device. 69 */ 70 void a2dp_source_init(void); 71 72 /** 73 * @brief Create a stream endpoint of type SOURCE, and register media codec by specifying its capabilities and the default configuration. 74 * @param media_type See avdtp_media_type_t values in avdtp.h (audio, video or multimedia). 75 * @param media_codec_type See avdtp_media_codec_type_t values in avdtp.h 76 * @param codec_capabilities Media codec capabilities as defined in A2DP spec, section 4 - Audio Codec Interoperability Requirements. 77 * @param codec_capabilities_len Media codec capabilities length. 78 * @param codec_configuration Default media codec configuration. 79 * @param codec_configuration_len Media codec configuration length. 80 * @param out_local_seid Assigned stream endpoint ID used in further A2DP commands. 81 * 82 * @return status ERROR_CODE_SUCCESS if sucessful. 83 */ 84 uint8_t a2dp_source_create_stream_endpoint(avdtp_media_type_t media_type, avdtp_media_codec_type_t media_codec_type, 85 uint8_t * codec_capabilities, uint16_t codec_capabilities_len, 86 uint8_t * media_codec_info, uint16_t media_codec_info_len, uint8_t * local_seid); 87 88 /** 89 * @brief Register callback for the A2DP Source client. It will receive following subevents of HCI_EVENT_A2DP_META HCI event type: 90 * - A2DP_SUBEVENT_INCOMING_CONNECTION_ESTABLISHED: Received when signaling connection with a remote is established . 91 * - A2DP_SUBEVENT_SIGNALING_CONNECTION_RELEASED: Received when signaling connection with a remote is released . 92 * - A2DP_SUBEVENT_STREAM_ESTABLISHED: Received when stream to a remote device is established. 93 * - A2DP_SUBEVENT_STREAM_STARTED: Received when stream is started. 94 * - A2DP_SUBEVENT_STREAM_SUSPENDED: Received when stream is paused. 95 * - A2DP_SUBEVENT_STREAM_STOPED: received when stream is aborted or stopped. 96 * - A2DP_SUBEVENT_STREAM_RELEASED: Received when stream is released. 97 * - A2DP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW: Indicates that the next media packet can be sent. 98 * 99 * @param callback 100 */ 101 void a2dp_source_register_packet_handler(btstack_packet_handler_t callback); 102 103 /** 104 * @brief Open stream. 105 * @param remote 106 * @param local_seid ID assigned to a local stream endpoint 107 * @param out_a2dp_cid Assigned A2DP channel identifyer used for furhter A2DP commands. 108 */ 109 uint8_t a2dp_source_establish_stream(bd_addr_t remote, uint8_t local_seid, uint16_t * out_a2dp_cid); 110 111 /** 112 * @brief Start stream. 113 * @param a2dp_cid A2DP channel identifyer. 114 * @param local_seid ID of a local stream endpoint. 115 */ 116 uint8_t a2dp_source_start_stream(uint16_t a2dp_cid, uint8_t local_seid); 117 118 /** 119 * @brief Pause stream. 120 * @param a2dp_cid A2DP channel identifyer. 121 * @param local_seid ID of a local stream endpoint. 122 */ 123 uint8_t a2dp_source_pause_stream(uint16_t a2dp_cid, uint8_t local_seid); 124 125 /** 126 * @brief Release stream and disconnect from remote. 127 * @param a2dp_cid A2DP channel identifyer. 128 */ 129 uint8_t a2dp_source_disconnect(uint16_t a2dp_cid); 130 131 /** 132 * @brief Request to send a media packet. Packet can be then sent on reception of A2DP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW event. 133 * @param a2dp_cid A2DP channel identifyer. 134 * @param local_seid ID of a local stream endpoint. 135 */ 136 void a2dp_source_stream_endpoint_request_can_send_now(uint16_t a2dp_cid, uint8_t local_seid); 137 138 /** 139 * @brief Return maximal media payload size, does not include media header. 140 * @param a2dp_cid A2DP channel identifyer. 141 * @param local_seid ID of a local stream endpoint. 142 * @return max_media_payload_size_without_media_header 143 */ 144 int a2dp_max_media_payload_size(uint16_t a2dp_cid, uint8_t local_seid); 145 146 /** 147 * @brief Send media payload. 148 * @param a2dp_cid A2DP channel identifyer. 149 * @param local_seid ID of a local stream endpoint. 150 * @param storage 151 * @param num_bytes_to_copy 152 * @param num_frames 153 * @param marker 154 * @return max_media_payload_size_without_media_header 155 */ 156 int a2dp_source_stream_send_media_payload(uint16_t a2dp_cid, uint8_t local_seid, uint8_t * storage, int num_bytes_to_copy, uint8_t num_frames, uint8_t marker); 157 158 /* API_END */ 159 160 #if defined __cplusplus 161 } 162 #endif 163 164 #endif // __A2DP_SOURCE_H