hfp_hf.c (d703d377e15b680e2fb5455f041abf0c7e136524) hfp_hf.c (cb81d35d7c3b357e822fcc8ed88aa49b7661232f)
1/*
2 * Copyright (C) 2014 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

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599#endif
600#if defined (ENABLE_CC256X_ASSISTED_HFP) || defined (ENABLE_BCM_PCM_WBS)
601 if (hfp_connection->state == HFP_W4_WBS_SHUTDOWN){
602 hfp_finalize_connection_context(hfp_connection);
603 return;
604 }
605#endif
606
1/*
2 * Copyright (C) 2014 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

--- 590 unchanged lines hidden (view full) ---

599#endif
600#if defined (ENABLE_CC256X_ASSISTED_HFP) || defined (ENABLE_BCM_PCM_WBS)
601 if (hfp_connection->state == HFP_W4_WBS_SHUTDOWN){
602 hfp_finalize_connection_context(hfp_connection);
603 return;
604 }
605#endif
606
607 if (hfp_connection->hf_accept_sco){
608
609 bool eSCO = hfp_connection->hf_accept_sco == 2;
610 hfp_connection->hf_accept_sco = 0;
611
607 if (hfp_connection->accept_sco){
608 bool incoming_eSCO = hfp_connection->accept_sco == 2;
609 hfp_connection->accept_sco = 0;
612 // notify about codec selection if not done already
613 if (hfp_connection->negotiated_codec == 0){
614 hfp_connection->negotiated_codec = HFP_CODEC_CVSD;
615 }
610 // notify about codec selection if not done already
611 if (hfp_connection->negotiated_codec == 0){
612 hfp_connection->negotiated_codec = HFP_CODEC_CVSD;
613 }
616
617 // remote supported feature eSCO is set if link type is eSCO
618 // eSCO: S4 - max latency == transmission interval = 0x000c == 12 ms,
619 uint16_t max_latency;
620 uint8_t retransmission_effort;
621 uint16_t packet_types;
622
623 if (eSCO && hci_extended_sco_link_supported() && hci_remote_esco_supported(hfp_connection->acl_handle)){
624 max_latency = 0x000c;
625 retransmission_effort = 0x02;
626 // eSCO: EV3 and 2-EV3
627 packet_types = 0x0048;
628 } else {
629 max_latency = 0xffff;
630 retransmission_effort = 0xff;
631 // sco: HV1 and HV3
632 packet_types = 0x005;
633 }
634
635 // mSBC only allows for transparent data
636 uint16_t sco_voice_setting = hci_get_sco_voice_setting();
637 if (hfp_connection->negotiated_codec == HFP_CODEC_MSBC){
638#ifdef ENABLE_BCM_PCM_WBS
639 sco_voice_setting = 0x0063; // Transparent data, 16-bit for BCM controllers
640#else
641 sco_voice_setting = 0x0043; // Transparent data, 8-bit otherwise
642#endif
643 }
644
645 // filter packet types
646 packet_types &= hfp_get_sco_packet_types();
647
648 // bits 6-9 are 'don't allow'
649 packet_types ^= 0x3c0;
650
651 log_info("HFP: sending hci_accept_connection_request, packet types 0x%04x, sco_voice_setting 0x%02x", packet_types, sco_voice_setting);
652 hci_send_cmd(&hci_accept_synchronous_connection, hfp_connection->remote_addr, 8000, 8000, max_latency,
653 sco_voice_setting, retransmission_effort, packet_types);
614 hfp_accept_synchronous_connection(hfp_connection, incoming_eSCO);
654 return;
655 }
656
657 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) {
658 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid);
659 return;
660 }
661 int done = hfp_hf_run_for_context_service_level_connection(hfp_connection);

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616 }
617
618 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) {
619 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid);
620 return;
621 }
622 int done = hfp_hf_run_for_context_service_level_connection(hfp_connection);

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