hfp.c (7d81706fa74a61fff75d7256d66e4f9a74466633) hfp.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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724 case HCI_EVENT_CONNECTION_REQUEST:
725 switch(hci_event_connection_request_get_link_type(packet)){
726 case 0: // SCO
727 case 2: // eSCO
728 hci_event_connection_request_get_bd_addr(packet, event_addr);
729 hfp_connection = get_hfp_connection_context_for_bd_addr(event_addr, local_role);
730 if (!hfp_connection) break;
731 if (hci_event_connection_request_get_link_type(packet) == 2){
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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724 case HCI_EVENT_CONNECTION_REQUEST:
725 switch(hci_event_connection_request_get_link_type(packet)){
726 case 0: // SCO
727 case 2: // eSCO
728 hci_event_connection_request_get_bd_addr(packet, event_addr);
729 hfp_connection = get_hfp_connection_context_for_bd_addr(event_addr, local_role);
730 if (!hfp_connection) break;
731 if (hci_event_connection_request_get_link_type(packet) == 2){
732 hfp_connection->hf_accept_sco = 2;
732 hfp_connection->accept_sco = 2;
733 } else {
733 } else {
734 hfp_connection->hf_accept_sco = 1;
734 hfp_connection->accept_sco = 1;
735 }
736#ifdef ENABLE_CC256X_ASSISTED_HFP
737 hfp_cc256x_prepare_for_sco(hfp_connection);
738#endif
739#ifdef ENABLE_BCM_PCM_WBS
740 hfp_bcm_prepare_for_sco(hfp_connection);
741#endif
735 }
736#ifdef ENABLE_CC256X_ASSISTED_HFP
737 hfp_cc256x_prepare_for_sco(hfp_connection);
738#endif
739#ifdef ENABLE_BCM_PCM_WBS
740 hfp_bcm_prepare_for_sco(hfp_connection);
741#endif
742 log_info("hf accept sco %u\n", hfp_connection->hf_accept_sco);
742 log_info("accept sco %u\n", hfp_connection->accept_sco);
743 sco_establishment_active = hfp_connection;
744 break;
745 default:
746 break;
747 }
748 break;
749
750 case HCI_EVENT_COMMAND_STATUS:

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767 hfp_connection = get_hfp_connection_context_for_bd_addr(event_addr, local_role);
768 if (!hfp_connection) {
769 log_error("HFP: connection does not exist for remote with addr %s.", bd_addr_to_str(event_addr));
770 return;
771 }
772
773 status = hci_event_synchronous_connection_complete_get_status(packet);
774 if (status != ERROR_CODE_SUCCESS){
743 sco_establishment_active = hfp_connection;
744 break;
745 default:
746 break;
747 }
748 break;
749
750 case HCI_EVENT_COMMAND_STATUS:

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767 hfp_connection = get_hfp_connection_context_for_bd_addr(event_addr, local_role);
768 if (!hfp_connection) {
769 log_error("HFP: connection does not exist for remote with addr %s.", bd_addr_to_str(event_addr));
770 return;
771 }
772
773 status = hci_event_synchronous_connection_complete_get_status(packet);
774 if (status != ERROR_CODE_SUCCESS){
775 hfp_connection->hf_accept_sco = 0;
775 hfp_connection->accept_sco = 0;
776 if (hfp_handle_failed_sco_connection(status)) break;
777
778 hfp_connection->establish_audio_connection = 0;
779 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED;
780 hfp_emit_sco_event(hfp_connection, status, 0, event_addr, hfp_connection->negotiated_codec);
781 break;
782 }
783

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1674#endif
1675 }
1676 // get packet types - bits 6-9 are 'don't allow'
1677 uint16_t packet_types = hfp_link_settings[setting].packet_types ^ 0x03c0;
1678 hci_send_cmd(&hci_setup_synchronous_connection, hfp_connection->acl_handle, 8000, 8000, hfp_link_settings[setting].max_latency,
1679 sco_voice_setting, hfp_link_settings[setting].retransmission_effort, packet_types);
1680}
1681
776 if (hfp_handle_failed_sco_connection(status)) break;
777
778 hfp_connection->establish_audio_connection = 0;
779 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED;
780 hfp_emit_sco_event(hfp_connection, status, 0, event_addr, hfp_connection->negotiated_codec);
781 break;
782 }
783

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1674#endif
1675 }
1676 // get packet types - bits 6-9 are 'don't allow'
1677 uint16_t packet_types = hfp_link_settings[setting].packet_types ^ 0x03c0;
1678 hci_send_cmd(&hci_setup_synchronous_connection, hfp_connection->acl_handle, 8000, 8000, hfp_link_settings[setting].max_latency,
1679 sco_voice_setting, hfp_link_settings[setting].retransmission_effort, packet_types);
1680}
1681
1682void hfp_accept_synchronous_connection(hfp_connection_t * hfp_connection, bool incoming_eSCO){
1683
1684 // remote supported feature eSCO is set if link type is eSCO
1685 // eSCO: S4 - max latency == transmission interval = 0x000c == 12 ms,
1686 uint16_t max_latency;
1687 uint8_t retransmission_effort;
1688 uint16_t packet_types;
1689
1690 if (incoming_eSCO && hci_extended_sco_link_supported() && hci_remote_esco_supported(hfp_connection->acl_handle)){
1691 max_latency = 0x000c;
1692 retransmission_effort = 0x02;
1693 // eSCO: EV3 and 2-EV3
1694 packet_types = 0x0048;
1695 } else {
1696 max_latency = 0xffff;
1697 retransmission_effort = 0xff;
1698 // sco: HV1 and HV3
1699 packet_types = 0x005;
1700 }
1701
1702 // mSBC only allows for transparent data
1703 uint16_t sco_voice_setting = hci_get_sco_voice_setting();
1704 if (hfp_connection->negotiated_codec == HFP_CODEC_MSBC){
1705#ifdef ENABLE_BCM_PCM_WBS
1706 sco_voice_setting = 0x0063; // Transparent data, 16-bit for BCM controllers
1707#else
1708 sco_voice_setting = 0x0043; // Transparent data, 8-bit otherwise
1709#endif
1710 }
1711
1712 // filter packet types
1713 packet_types &= hfp_get_sco_packet_types();
1714
1715 // bits 6-9 are 'don't allow'
1716 packet_types ^= 0x3c0;
1717
1718 log_info("HFP: sending hci_accept_connection_request, packet types 0x%04x, sco_voice_setting 0x%02x", packet_types, sco_voice_setting);
1719 hci_send_cmd(&hci_accept_synchronous_connection, hfp_connection->remote_addr, 8000, 8000, max_latency,
1720 sco_voice_setting, retransmission_effort, packet_types);
1721}
1722
1682#ifdef ENABLE_CC256X_ASSISTED_HFP
1683void hfp_cc256x_prepare_for_sco(hfp_connection_t * hfp_connection){
1684 hfp_connection->cc256x_send_write_codec_config = true;
1685 if (hfp_connection->negotiated_codec == HFP_CODEC_MSBC){
1686 hfp_connection->cc256x_send_wbs_associate = true;
1687 }
1688}
1689

--- 142 unchanged lines hidden --- 		1723#ifdef ENABLE_CC256X_ASSISTED_HFP
1724void hfp_cc256x_prepare_for_sco(hfp_connection_t * hfp_connection){
1725 hfp_connection->cc256x_send_write_codec_config = true;
1726 if (hfp_connection->negotiated_codec == HFP_CODEC_MSBC){
1727 hfp_connection->cc256x_send_wbs_associate = true;
1728 }
1729}
1730

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