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hfp_hf: enable madatory safe settings for HCI responder with ENABLE_HFP_HF_SAFE_SETTINGS

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Matthias Ringwald 2023-09-25 15:19:20 +02:00
parent 715d9d6a34
commit c169b70d58
1 changed files with 17 additions and 3 deletions
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20
src/classic/hfp.c
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@ -122,7 +122,8 @@ static const struct {
{0x000d, 0x02, SCO_PACKET_TYPES_2EV3, CODEC_MASK_OTHER} // HFP_LINK_SETTINGS_T2
};
// table 5.8 'mandatory safe settings' for eSCO + similar entries for SCO
#ifdef ENABLE_HFP_HF_SAFE_SETTINGS
// HFP v1.9, table 6.10 'mandatory safe settings' for eSCO + similar entries for SCO
static const struct hfp_mandatory_safe_setting {
const uint8_t codec_mask;
const bool secure_connection_in_use;
@ -135,6 +136,7 @@ static const struct hfp_mandatory_safe_setting {
{ CODEC_MASK_OTHER, false, HFP_LINK_SETTINGS_T1},
{ CODEC_MASK_OTHER, true, HFP_LINK_SETTINGS_T2},
};
#endif
static const char * hfp_hf_features[] = {
"EC and/or NR function",
@ -2030,6 +2032,7 @@ void hfp_setup_synchronous_connection(hfp_connection_t * hfp_connection){
#endif
}
#ifdef ENABLE_HFP_HF_SAFE_SETTINGS
hfp_link_settings_t hfp_safe_settings_for_context(bool use_eSCO, uint8_t negotiated_codec, bool secure_connection_in_use){
uint8_t i;
hfp_link_settings_t link_setting = HFP_LINK_SETTINGS_NONE;
@ -2044,30 +2047,41 @@ hfp_link_settings_t hfp_safe_settings_for_context(bool use_eSCO, uint8_t negotia
}
return link_setting;
}
#endif
void hfp_accept_synchronous_connection(hfp_connection_t * hfp_connection, bool use_eSCO){
hfp_sco_establishment_active = hfp_connection;
bool secure_connection_in_use = gap_secure_connection(hfp_connection->acl_handle);
// lookup safe settings based on SCO type, SC use and Codec type
uint16_t max_latency;
uint16_t packet_types;
uint16_t retransmission_effort;
hfp_link_settings_t link_setting = HFP_LINK_SETTINGS_NONE;
#ifdef ENABLE_HFP_HF_SAFE_SETTINGS
// fallback for non-CVSD codec and SCO connection
if ((hfp_connection->negotiated_codec != HFP_CODEC_CVSD) && (use_eSCO == false)){
max_latency = 0xffff;
retransmission_effort = 0xff;
packet_types = SCO_PACKET_TYPES_HV3 | SCO_PACKET_TYPES_HV1;
} else {
// use safe settings from HFP v1.9, table 6.10
bool secure_connection_in_use = gap_secure_connection(hfp_connection->acl_handle);
link_setting = hfp_safe_settings_for_context(use_eSCO, hfp_connection->negotiated_codec, secure_connection_in_use);
max_latency = hfp_link_settings[(uint8_t) link_setting].max_latency;
retransmission_effort = hfp_link_settings[(uint8_t) link_setting].retransmission_effort;
packet_types = hfp_link_settings[(uint8_t) link_setting].packet_types;
}
#else
max_latency = 0xffff;
retransmission_effort = 0xff;
if (use_eSCO) {
packet_types = SCO_PACKET_TYPES_EV3 | SCO_PACKET_TYPES_2EV3;
} else {
packet_types = SCO_PACKET_TYPES_HV3 | SCO_PACKET_TYPES_HV1;
}
#endif
// transparent data for non-CVSD connections or if codec provided by Controller
uint16_t sco_voice_setting = hci_get_sco_voice_setting();