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btstack/test/avdtp/avdtp_util.c
Milanka Ringwald 5ea47e31d2 move acceptor signaling connection state from sink
2017-01-17 14:42:03 +01:00

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/*
* Copyright (C) 2016 BlueKitchen GmbH
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the copyright holders nor the names of
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
* 4. Any redistribution, use, or modification is done solely for
* personal benefit and not for any commercial purpose or for
* monetary gain.
*
* THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS
* RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* Please inquire about commercial licensing options at
* contact@bluekitchen-gmbh.com
*
*/
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "btstack.h"
#include "avdtp.h"
#include "avdtp_util.h"
inline uint8_t avdtp_header(uint8_t tr_label, avdtp_packet_type_t packet_type, avdtp_message_type_t msg_type){
return (tr_label<<4) | ((uint8_t)packet_type<<2) | (uint8_t)msg_type;
}
int get_bit16(uint16_t bitmap, int position){
return (bitmap >> position) & 1;
}
uint8_t store_bit16(uint16_t bitmap, int position, uint8_t value){
if (value){
bitmap |= 1 << position;
} else {
bitmap &= ~ (1 << position);
}
return bitmap;
}
int avdtp_read_signaling_header(avdtp_signaling_packet_t * signaling_header, uint8_t * packet, uint16_t size){
int pos = 0;
if (size < 2) return pos;
signaling_header->transaction_label = packet[pos] >> 4;
signaling_header->packet_type = (avdtp_packet_type_t)((packet[pos] >> 2) & 0x03);
signaling_header->message_type = (avdtp_message_type_t) (packet[pos] & 0x03);
pos++;
memset(signaling_header->command, 0, sizeof(signaling_header->command));
switch (signaling_header->packet_type){
case AVDTP_SINGLE_PACKET:
signaling_header->num_packets = 0;
signaling_header->offset = 0;
signaling_header->size = 0;
break;
case AVDTP_END_PACKET:
signaling_header->num_packets = 0;
break;
case AVDTP_START_PACKET:
signaling_header->num_packets = packet[pos++];
signaling_header->size = 0;
signaling_header->offset = 0;
break;
case AVDTP_CONTINUE_PACKET:
if (signaling_header->num_packets <= 0) {
printf(" ERROR: wrong num fragmented packets\n");
break;
}
signaling_header->num_packets--;
break;
}
signaling_header->signal_identifier = packet[pos++] & 0x3f;
return pos;
}
int avdtp_pack_service_capabilities(uint8_t * buffer, int size, avdtp_capabilities_t caps, avdtp_service_category_t category, uint8_t pack_all_capabilities){
int i;
// pos = 0 reserved for length
int pos = 1;
switch(category){
case AVDTP_MEDIA_TRANSPORT:
case AVDTP_REPORTING:
break;
case AVDTP_DELAY_REPORTING:
if (!pack_all_capabilities) break;
break;
case AVDTP_RECOVERY:
buffer[pos++] = caps.recovery.recovery_type; // 0x01=RFC2733
buffer[pos++] = caps.recovery.maximum_recovery_window_size;
buffer[pos++] = caps.recovery.maximum_number_media_packets;
break;
case AVDTP_CONTENT_PROTECTION:
buffer[pos++] = caps.content_protection.cp_type_value_len + 2;
big_endian_store_16(buffer, pos, caps.content_protection.cp_type);
pos += 2;
memcpy(buffer+pos, caps.content_protection.cp_type_value, caps.content_protection.cp_type_value_len);
break;
case AVDTP_HEADER_COMPRESSION:
buffer[pos++] = (caps.header_compression.back_ch << 7) | (caps.header_compression.media << 6) | (caps.header_compression.recovery << 5);
break;
case AVDTP_MULTIPLEXING:
buffer[pos++] = caps.multiplexing_mode.fragmentation << 7;
for (i=0; i<caps.multiplexing_mode.transport_identifiers_num; i++){
buffer[pos++] = caps.multiplexing_mode.transport_session_identifiers[i] << 7;
buffer[pos++] = caps.multiplexing_mode.tcid[i] << 7;
// media, reporting. recovery
}
break;
case AVDTP_MEDIA_CODEC:
buffer[pos++] = ((uint8_t)caps.media_codec.media_type) << 4;
buffer[pos++] = (uint8_t)caps.media_codec.media_codec_type;
for (i = 0; i<caps.media_codec.media_codec_information_len; i++){
buffer[pos++] = caps.media_codec.media_codec_information[i];
}
break;
default:
break;
}
buffer[0] = pos - 1; // length
return pos;
}
static int avdtp_unpack_service_capabilities_has_errors(avdtp_connection_t * connection, avdtp_service_category_t category, uint8_t cap_len){
connection->error_code = 0;
if (category == AVDTP_SERVICE_CATEGORY_INVALID_0 ||
(category == AVDTP_SERVICE_CATEGORY_INVALID_FF && connection->signaling_packet.signal_identifier == AVDTP_SI_RECONFIGURE)){
printf(" ERROR: BAD SERVICE CATEGORY %d\n", category);
connection->reject_service_category = category;
connection->error_code = BAD_SERV_CATEGORY;
return 1;
}
if (connection->signaling_packet.signal_identifier == AVDTP_SI_RECONFIGURE){
if (category != AVDTP_CONTENT_PROTECTION && category != AVDTP_MEDIA_CODEC){
printf(" ERROR: REJECT CATEGORY, INVALID_CAPABILITIES\n");
connection->reject_service_category = category;
connection->error_code = INVALID_CAPABILITIES;
return 1;
}
}
switch(category){
case AVDTP_MEDIA_TRANSPORT:
if (cap_len != 0){
printf(" ERROR: REJECT CATEGORY, BAD_MEDIA_TRANSPORT\n");
connection->reject_service_category = category;
connection->error_code = BAD_MEDIA_TRANSPORT_FORMAT;
return 1;
}
break;
case AVDTP_REPORTING:
case AVDTP_DELAY_REPORTING:
if (cap_len != 0){
printf(" ERROR: REJECT CATEGORY, BAD_LENGTH\n");
connection->reject_service_category = category;
connection->error_code = BAD_LENGTH;
return 1;
}
break;
case AVDTP_RECOVERY:
if (cap_len < 3){
printf(" ERROR: REJECT CATEGORY, BAD_MEDIA_TRANSPORT\n");
connection->reject_service_category = category;
connection->error_code = BAD_RECOVERY_FORMAT;
return 1;
}
break;
case AVDTP_CONTENT_PROTECTION:
if (cap_len < 2){
printf(" ERROR: REJECT CATEGORY, BAD_CP_FORMAT\n");
connection->reject_service_category = category;
connection->error_code = BAD_CP_FORMAT;
return 1;
}
break;
case AVDTP_HEADER_COMPRESSION:
break;
case AVDTP_MULTIPLEXING:
break;
case AVDTP_MEDIA_CODEC:
break;
default:
break;
}
return 0;
}
uint16_t avdtp_unpack_service_capabilities(avdtp_connection_t * connection, avdtp_capabilities_t * caps, uint8_t * packet, uint16_t size){
if (size == 0) return 0;
uint16_t registered_service_categories = 0;
int pos = 0;
int i;
avdtp_service_category_t category = (avdtp_service_category_t)packet[pos++];
uint8_t cap_len = packet[pos++];
if (avdtp_unpack_service_capabilities_has_errors(connection, category, cap_len)) return 0;
int processed_cap_len = 0;
int rfa = 0;
while (pos < size){
rfa = 0;
processed_cap_len = pos;
switch(category){
case AVDTP_RECOVERY:
caps->recovery.recovery_type = packet[pos++];
caps->recovery.maximum_recovery_window_size = packet[pos++];
caps->recovery.maximum_number_media_packets = packet[pos++];
break;
case AVDTP_CONTENT_PROTECTION:
caps->content_protection.cp_type = big_endian_read_16(packet, pos);
pos+=2;
caps->content_protection.cp_type_value_len = cap_len - 2;
pos += caps->content_protection.cp_type_value_len;
// connection->reject_service_category = category;
// connection->error_code = UNSUPPORTED_CONFIGURATION;
// support for content protection goes here
break;
case AVDTP_HEADER_COMPRESSION:
caps->header_compression.back_ch = packet[pos] >> 7;
caps->header_compression.media = packet[pos] >> 6;
caps->header_compression.recovery = packet[pos] >> 5;
pos++;
break;
case AVDTP_MULTIPLEXING:
caps->multiplexing_mode.fragmentation = packet[pos++] >> 7;
// read [tsid, tcid] for media, reporting. recovery respectively
caps->multiplexing_mode.transport_identifiers_num = 3;
for (i=0; i<caps->multiplexing_mode.transport_identifiers_num; i++){
caps->multiplexing_mode.transport_session_identifiers[i] = packet[pos++] >> 7;
caps->multiplexing_mode.tcid[i] = packet[pos++] >> 7;
}
break;
case AVDTP_MEDIA_CODEC:
caps->media_codec.media_type = packet[pos++] >> 4;
caps->media_codec.media_codec_type = packet[pos++];
caps->media_codec.media_codec_information_len = cap_len - 2;
caps->media_codec.media_codec_information = &packet[pos];
pos += caps->media_codec.media_codec_information_len;
break;
case AVDTP_MEDIA_TRANSPORT:
case AVDTP_REPORTING:
case AVDTP_DELAY_REPORTING:
pos += cap_len;
break;
default:
pos += cap_len;
rfa = 1;
break;
}
processed_cap_len = pos - processed_cap_len;
if (cap_len == processed_cap_len){
if (!rfa) {
registered_service_categories = store_bit16(registered_service_categories, category, 1);
}
if (pos < size-2){
category = (avdtp_service_category_t)packet[pos++];
cap_len = packet[pos++];
if (avdtp_unpack_service_capabilities_has_errors(connection, category, cap_len)) return 0;
// printf("category %d, pos %d + 2 + %d -> %d\n", category, old_pos, cap_len, pos + cap_len);
// printf_hexdump(packet+old_pos, size-old_pos);
}
}
}
return registered_service_categories;
}
void avdtp_prepare_capabilities(avdtp_signaling_packet_t * signaling_packet, uint8_t transaction_label, uint16_t registered_service_categories, avdtp_capabilities_t capabilities, uint8_t identifier){
if (signaling_packet->offset) return;
uint8_t pack_all_capabilities = 1;
signaling_packet->message_type = AVDTP_RESPONSE_ACCEPT_MSG;
signaling_packet->size = 0;
int i;
signaling_packet->command[signaling_packet->size++] = signaling_packet->acp_seid << 2;
switch (identifier) {
case AVDTP_SI_GET_CAPABILITIES:
pack_all_capabilities = 0;
break;
case AVDTP_SI_GET_ALL_CAPABILITIES:
pack_all_capabilities = 1;
break;
case AVDTP_SI_SET_CONFIGURATION:
signaling_packet->command[signaling_packet->size++] = signaling_packet->int_seid << 2;
signaling_packet->message_type = AVDTP_CMD_MSG;
break;
case AVDTP_SI_RECONFIGURE:
signaling_packet->message_type = AVDTP_CMD_MSG;
break;
default:
log_error("avdtp_prepare_capabilities wrong identifier %d", identifier);
break;
}
for (i = 1; i < 9; i++){
if (get_bit16(registered_service_categories, i)){
// service category
signaling_packet->command[signaling_packet->size++] = i;
signaling_packet->size += avdtp_pack_service_capabilities(signaling_packet->command+signaling_packet->size, sizeof(signaling_packet->command)-signaling_packet->size, capabilities, (avdtp_service_category_t)i, pack_all_capabilities);
}
}
// signaling_packet->command[signaling_packet->size++] = 0x04;
// signaling_packet->command[signaling_packet->size++] = 0x02;
// signaling_packet->command[signaling_packet->size++] = 0x02;
// signaling_packet->command[signaling_packet->size++] = 0x00;
signaling_packet->signal_identifier = identifier;
signaling_packet->transaction_label = transaction_label;
}
int avdtp_signaling_create_fragment(uint16_t cid, avdtp_signaling_packet_t * signaling_packet, uint8_t * out_buffer) {
int mtu = l2cap_get_remote_mtu_for_local_cid(cid);
// hack for test
// int mtu = 6;
int data_len = 0;
uint16_t offset = signaling_packet->offset;
uint16_t pos = 1;
// printf(" avdtp_signaling_create_fragment offset %d, packet type %d\n", signaling_packet->offset, signaling_packet->packet_type);
if (offset == 0){
if (signaling_packet->size <= mtu - 2){
// printf(" AVDTP_SINGLE_PACKET\n");
signaling_packet->packet_type = AVDTP_SINGLE_PACKET;
out_buffer[pos++] = signaling_packet->signal_identifier;
data_len = signaling_packet->size;
} else {
signaling_packet->packet_type = AVDTP_START_PACKET;
out_buffer[pos++] = (mtu + signaling_packet->size)/ (mtu-1);
out_buffer[pos++] = signaling_packet->signal_identifier;
data_len = mtu - 3;
signaling_packet->offset = data_len;
// printf(" AVDTP_START_PACKET len %d, offset %d\n", signaling_packet->size, signaling_packet->offset);
}
} else {
int remaining_bytes = signaling_packet->size - offset;
if (remaining_bytes <= mtu - 1){
//signaling_packet->fragmentation = 1;
signaling_packet->packet_type = AVDTP_END_PACKET;
data_len = remaining_bytes;
signaling_packet->offset = 0;
// printf(" AVDTP_END_PACKET len %d, offset %d\n", signaling_packet->size, signaling_packet->offset);
} else{
signaling_packet->packet_type = AVDTP_CONTINUE_PACKET;
data_len = mtu - 1;
signaling_packet->offset += data_len;
// printf(" AVDTP_CONTINUE_PACKET len %d, offset %d\n", signaling_packet->size, signaling_packet->offset);
}
}
out_buffer[0] = avdtp_header(signaling_packet->transaction_label, signaling_packet->packet_type, signaling_packet->message_type);
memcpy(out_buffer+pos, signaling_packet->command + offset, data_len);
pos += data_len;
return pos;
}
void avdtp_signaling_emit_connection_established(btstack_packet_handler_t callback, uint16_t con_handle, bd_addr_t addr, uint8_t status){
if (!callback) return;
uint8_t event[12];
int pos = 0;
event[pos++] = HCI_EVENT_AVDTP_META;
event[pos++] = sizeof(event) - 2;
event[pos++] = AVDTP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED;
little_endian_store_16(event, pos, con_handle);
pos += 2;
reverse_bd_addr(addr,&event[pos]);
pos += 6;
event[pos++] = status;
(*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
}
void avdtp_signaling_emit_sep(btstack_packet_handler_t callback, uint16_t con_handle, avdtp_sep_t sep){
if (!callback) return;
uint8_t event[9];
int pos = 0;
event[pos++] = HCI_EVENT_AVDTP_META;
event[pos++] = sizeof(event) - 2;
event[pos++] = AVDTP_SUBEVENT_SIGNALING_SEP_FOUND;
little_endian_store_16(event, pos, con_handle);
pos += 2;
event[pos++] = sep.seid;
event[pos++] = sep.in_use;
event[pos++] = sep.media_type;
event[pos++] = sep.type;
(*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
}
void avdtp_signaling_emit_done(btstack_packet_handler_t callback, uint16_t con_handle, uint8_t status){
if (!callback) return;
uint8_t event[6];
int pos = 0;
event[pos++] = HCI_EVENT_AVDTP_META;
event[pos++] = sizeof(event) - 2;
event[pos++] = AVDTP_SUBEVENT_SIGNALING_DONE;
little_endian_store_16(event, pos, con_handle);
pos += 2;
event[pos++] = status;
(*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
}
void avdtp_signaling_emit_media_codec_sbc_capability(btstack_packet_handler_t callback, uint16_t con_handle, adtvp_media_codec_capabilities_t media_codec){
if (!callback) return;
uint8_t event[13];
int pos = 0;
event[pos++] = HCI_EVENT_AVDTP_META;
event[pos++] = sizeof(event) - 2;
event[pos++] = AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY;
little_endian_store_16(event, pos, con_handle);
pos += 2;
event[pos++] = media_codec.media_type;
event[pos++] = media_codec.media_codec_information[0] >> 4;
event[pos++] = media_codec.media_codec_information[0] & 0x0F;
event[pos++] = media_codec.media_codec_information[1] >> 4;
event[pos++] = (media_codec.media_codec_information[1] & 0x0F) >> 2;
event[pos++] = media_codec.media_codec_information[1] & 0x03;
event[pos++] = media_codec.media_codec_information[2];
event[pos++] = media_codec.media_codec_information[3];
(*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
}
void avdtp_signaling_emit_media_codec_other_capability(btstack_packet_handler_t callback, uint16_t con_handle, adtvp_media_codec_capabilities_t media_codec){
if (!callback) return;
uint8_t event[109];
int pos = 0;
event[pos++] = HCI_EVENT_AVDTP_META;
event[pos++] = sizeof(event) - 2;
event[pos++] = AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY;
little_endian_store_16(event, pos, con_handle);
pos += 2;
event[pos++] = media_codec.media_type;
little_endian_store_16(event, pos, media_codec.media_codec_type);
pos += 2;
little_endian_store_16(event, pos, media_codec.media_codec_information_len);
pos += 2;
memcpy(event+pos, media_codec.media_codec_information, media_codec.media_codec_information_len);
(*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
}
static inline void avdtp_signaling_emit_media_codec_sbc(btstack_packet_handler_t callback, uint16_t con_handle, adtvp_media_codec_capabilities_t media_codec, uint8_t reconfigure){
if (!callback) return;
uint8_t event[14+2];
int pos = 0;
event[pos++] = HCI_EVENT_AVDTP_META;
event[pos++] = sizeof(event) - 2;
event[pos++] = AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION;
little_endian_store_16(event, pos, con_handle);
pos += 2;
event[pos++] = reconfigure;
uint8_t num_channels = 0;
uint16_t sampling_frequency = 0;
uint8_t subbands = 0;
uint8_t block_length = 0;
uint8_t sampling_frequency_bitmap = media_codec.media_codec_information[0] >> 4;
uint8_t channel_mode_bitmap = media_codec.media_codec_information[0] & 0x0F;
uint8_t block_length_bitmap = media_codec.media_codec_information[1] >> 4;
uint8_t subbands_bitmap = (media_codec.media_codec_information[1] & 0x0F) >> 2;
if (channel_mode_bitmap & AVDTP_SBC_MONO){
num_channels = 1;
}
if ( (channel_mode_bitmap & AVDTP_SBC_JOINT_STEREO) ||
(channel_mode_bitmap & AVDTP_SBC_STEREO) ||
(channel_mode_bitmap & AVDTP_SBC_DUAL_CHANNEL) ){
num_channels = 2;
}
if (sampling_frequency_bitmap & AVDTP_SBC_16000){
sampling_frequency = 16000;
}
if (sampling_frequency_bitmap & AVDTP_SBC_32000){
sampling_frequency = 32000;
}
if (sampling_frequency_bitmap & AVDTP_SBC_44100){
sampling_frequency = 44100;
}
if (sampling_frequency_bitmap & AVDTP_SBC_48000){
sampling_frequency = 48000;
}
if (subbands_bitmap & AVDTP_SBC_SUBBANDS_4){
subbands = 4;
}
if (subbands_bitmap & AVDTP_SBC_SUBBANDS_8){
subbands = 8;
}
if (block_length_bitmap & AVDTP_SBC_BLOCK_LENGTH_4){
block_length = 4;
}
if (block_length_bitmap & AVDTP_SBC_BLOCK_LENGTH_8){
block_length = 8;
}
if (block_length_bitmap & AVDTP_SBC_BLOCK_LENGTH_12){
block_length = 12;
}
if (block_length_bitmap & AVDTP_SBC_BLOCK_LENGTH_16){
block_length = 16;
}
event[pos++] = media_codec.media_type;
little_endian_store_16(event, pos, sampling_frequency);
pos += 2;
event[pos++] = channel_mode_bitmap;
event[pos++] = num_channels;
event[pos++] = block_length;
event[pos++] = subbands;
event[pos++] = media_codec.media_codec_information[1] & 0x03;
event[pos++] = media_codec.media_codec_information[2];
event[pos++] = media_codec.media_codec_information[3];
(*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
}
void avdtp_signaling_emit_media_codec_sbc_configuration(btstack_packet_handler_t callback, uint16_t con_handle, adtvp_media_codec_capabilities_t media_codec){
if (!callback) return;
avdtp_signaling_emit_media_codec_sbc(callback, con_handle, media_codec, 0);
}
void avdtp_signaling_emit_media_codec_sbc_reconfiguration(btstack_packet_handler_t callback, uint16_t con_handle, adtvp_media_codec_capabilities_t media_codec){
if (!callback) return;
avdtp_signaling_emit_media_codec_sbc(callback, con_handle, media_codec, 1);
}
static inline void avdtp_signaling_emit_media_codec_other(btstack_packet_handler_t callback, uint16_t con_handle, adtvp_media_codec_capabilities_t media_codec, uint8_t reconfigure){
uint8_t event[110];
int pos = 0;
event[pos++] = HCI_EVENT_AVDTP_META;
event[pos++] = sizeof(event) - 2;
event[pos++] = AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION;
little_endian_store_16(event, pos, con_handle);
pos += 2;
event[pos++] = reconfigure;
event[pos++] = media_codec.media_type;
little_endian_store_16(event, pos, media_codec.media_codec_type);
pos += 2;
little_endian_store_16(event, pos, media_codec.media_codec_information_len);
pos += 2;
memcpy(event+pos, media_codec.media_codec_information, media_codec.media_codec_information_len);
(*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
}
void avdtp_signaling_emit_media_codec_other_configuration(btstack_packet_handler_t callback, uint16_t con_handle, adtvp_media_codec_capabilities_t media_codec){
if (!callback) return;
avdtp_signaling_emit_media_codec_other(callback, con_handle, media_codec, 0);
}
void avdtp_signaling_emit_media_codec_other_reconfiguration(btstack_packet_handler_t callback, uint16_t con_handle, adtvp_media_codec_capabilities_t media_codec){
if (!callback) return;
avdtp_signaling_emit_media_codec_other(callback, con_handle, media_codec, 1);
}
void avdtp_sink_request_can_send_now_acceptor(avdtp_connection_t * connection, uint16_t l2cap_cid){
connection->wait_to_send_acceptor = 1;
l2cap_request_can_send_now_event(l2cap_cid);
}
void avdtp_sink_request_can_send_now_initiator(avdtp_connection_t * connection, uint16_t l2cap_cid){
connection->wait_to_send_initiator = 1;
l2cap_request_can_send_now_event(l2cap_cid);
}
void avdtp_sink_request_can_send_now_self(avdtp_connection_t * connection, uint16_t l2cap_cid){
connection->wait_to_send_self = 1;
l2cap_request_can_send_now_event(l2cap_cid);
}
avdtp_stream_endpoint_t * get_avdtp_stream_endpoint_for_seid(uint16_t seid){
btstack_linked_list_iterator_t it;
btstack_linked_list_iterator_init(&it, (btstack_linked_list_t *) &stream_endpoints);
while (btstack_linked_list_iterator_has_next(&it)){
avdtp_stream_endpoint_t * stream_endpoint = (avdtp_stream_endpoint_t *)btstack_linked_list_iterator_next(&it);
if (stream_endpoint->sep.seid == seid){
return stream_endpoint;
}
}
return NULL;
}
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