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178 lines
7.5 KiB
C
178 lines
7.5 KiB
C
/*
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* Copyright (C) 2016 BlueKitchen GmbH
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holders nor the names of
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* 4. Any redistribution, use, or modification is done solely for
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* personal benefit and not for any commercial purpose or for
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* monetary gain.
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*
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* THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS
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* RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* Please inquire about commercial licensing options at
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* contact@bluekitchen-gmbh.com
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*
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*/
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/*
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* a2dp_source.h
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*
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* Advanced Audio Distribution Transport Profile (A2DP) Source
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*
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* A2DP Source is a device that streames media data.
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*/
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#ifndef A2DP_SOURCE_H
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#define A2DP_SOURCE_H
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#include <stdint.h>
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#include "classic/avdtp.h"
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#if defined __cplusplus
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extern "C" {
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#endif
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/* API_START */
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/**
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* @brief Create A2DP Source service record.
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* @param service
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* @param service_record_handle
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* @param supported_features 16-bit bitmap, see AVDTP_SOURCE_SF_* values in avdtp.h
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* @param service_name
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* @param service_provider_name
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*/
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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);
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/**
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* @brief Initialize up A2DP Source device.
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*/
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void a2dp_source_init(void);
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/**
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* @brief Create a stream endpoint of type SOURCE, and register media codec by specifying its capabilities and the default configuration.
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* @param media_type See avdtp_media_type_t values in avdtp.h (audio, video or multimedia).
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* @param media_codec_type See avdtp_media_codec_type_t values in avdtp.h
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* @param codec_capabilities Media codec capabilities as defined in A2DP spec, section 4 - Audio Codec Interoperability Requirements.
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* @param codec_capabilities_len Media codec capabilities length.
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* @param codec_configuration Default media codec configuration.
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* @param codec_configuration_len Media codec configuration length.
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*
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* @return local_stream_endpoint
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*/
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avdtp_stream_endpoint_t * a2dp_source_create_stream_endpoint(avdtp_media_type_t media_type, avdtp_media_codec_type_t media_codec_type,
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uint8_t * codec_capabilities, uint16_t codec_capabilities_len,
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uint8_t * codec_configuration, uint16_t codec_configuration_len);
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/**
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* @brief Register callback for the A2DP Source client. It will receive following subevents of HCI_EVENT_A2DP_META HCI event type:
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* - A2DP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW: Indicates that the next media packet can be sent.
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*
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* - A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED Received when signaling connection with a remote is established.
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* - A2DP_SUBEVENT_SIGNALING_CONNECTION_RELEASED Received when signaling connection with a remote is released
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* - A2DP_SUBEVENT_STREAM_ESTABLISHED Received when stream to a remote device is established.
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* - A2DP_SUBEVENT_STREAM_STARTED Received when stream is started.
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* - A2DP_SUBEVENT_STREAM_SUSPENDED Received when stream is paused.
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* - A2DP_SUBEVENT_STREAM_STOPED received when stream is aborted or stopped.
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* - A2DP_SUBEVENT_STREAM_RELEASED Received when stream is released.
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* - A2DP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY Currently the only capability that is passed to client
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* - A2DP_SUBEVENT_SIGNALING_CAPABILITIES_DONE Signals that all capabilities are reported
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* - A2DP_SUBEVENT_SIGNALING_DELAY_REPORT Delay report
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* - A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION SBC configuration
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* - A2DP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW Signals that a media packet can be sent
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* - A2DP_SUBEVENT_COMMAND_REJECTED Command reject
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* @param callback
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*/
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void a2dp_source_register_packet_handler(btstack_packet_handler_t callback);
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/**
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* @brief Open stream.
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* @param remote
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* @param local_seid ID assigned to a local stream endpoint
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* @param out_a2dp_cid Assigned A2DP channel identifyer used for furhter A2DP commands.
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*/
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uint8_t a2dp_source_establish_stream(bd_addr_t remote, uint8_t local_seid, uint16_t * out_a2dp_cid);
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/**
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* @brief Reconfigure stream.
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* @param local_seid ID assigned to a local stream endpoint
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* @param sampling_frequency New sampling frequency to use. Cannot be called while stream is active
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*/
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uint8_t a2dp_source_reconfigure_stream_sampling_frequency(uint16_t a2dp_cid, uint32_t sampling_frequency);
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/**
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* @brief Start stream.
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* @param a2dp_cid A2DP channel identifyer.
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* @param local_seid ID of a local stream endpoint.
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*/
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uint8_t a2dp_source_start_stream(uint16_t a2dp_cid, uint8_t local_seid);
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/**
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* @brief Pause stream.
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* @param a2dp_cid A2DP channel identifyer.
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* @param local_seid ID of a local stream endpoint.
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*/
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uint8_t a2dp_source_pause_stream(uint16_t a2dp_cid, uint8_t local_seid);
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/**
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* @brief Release stream and disconnect from remote.
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* @param a2dp_cid A2DP channel identifyer.
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*/
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uint8_t a2dp_source_disconnect(uint16_t a2dp_cid);
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/**
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* @brief Request to send a media packet. Packet can be then sent on reception of A2DP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW event.
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* @param a2dp_cid A2DP channel identifyer.
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* @param local_seid ID of a local stream endpoint.
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*/
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void a2dp_source_stream_endpoint_request_can_send_now(uint16_t a2dp_cid, uint8_t local_seid);
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/**
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* @brief Return maximal media payload size, does not include media header.
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* @param a2dp_cid A2DP channel identifyer.
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* @param local_seid ID of a local stream endpoint.
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* @return max_media_payload_size_without_media_header
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*/
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int a2dp_max_media_payload_size(uint16_t a2dp_cid, uint8_t local_seid);
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/**
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* @brief Send media payload.
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* @param a2dp_cid A2DP channel identifyer.
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* @param local_seid ID of a local stream endpoint.
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* @param storage
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* @param num_bytes_to_copy
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* @param num_frames
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* @param marker
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* @return max_media_payload_size_without_media_header
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*/
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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);
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/* API_END */
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#if defined __cplusplus
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}
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#endif
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#endif // A2DP_SOURCE_H
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