hfp.c (13ea5944fda42b197e733750a46b71daff1e7d82) hfp.c (3ad75286b369b7c8fa8d48d87c7750c3b8b4b6c4)
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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116 {0x0005, 0xff, SCO_PACKET_TYPES_HV3, false, CODEC_MASK_CVSD }, // HFP_LINK_SETTINGS_D1
117 {0x0007, 0x01, SCO_PACKET_TYPES_EV3, true, CODEC_MASK_CVSD }, // HFP_LINK_SETTINGS_S1
118 {0x0007, 0x01, SCO_PACKET_TYPES_2EV3, true, CODEC_MASK_CVSD }, // HFP_LINK_SETTINGS_S2
119 {0x000a, 0x01, SCO_PACKET_TYPES_2EV3, true, CODEC_MASK_CVSD }, // HFP_LINK_SETTINGS_S3
120 {0x000c, 0x02, SCO_PACKET_TYPES_2EV3, true, CODEC_MASK_CVSD }, // HFP_LINK_SETTINGS_S4
121 {0x0008, 0x02, SCO_PACKET_TYPES_EV3, true, CODEC_MASK_OTHER}, // HFP_LINK_SETTINGS_T1
122 {0x000d, 0x02, SCO_PACKET_TYPES_2EV3, true, CODEC_MASK_OTHER} // HFP_LINK_SETTINGS_T2
123};
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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116 {0x0005, 0xff, SCO_PACKET_TYPES_HV3, false, CODEC_MASK_CVSD }, // HFP_LINK_SETTINGS_D1
117 {0x0007, 0x01, SCO_PACKET_TYPES_EV3, true, CODEC_MASK_CVSD }, // HFP_LINK_SETTINGS_S1
118 {0x0007, 0x01, SCO_PACKET_TYPES_2EV3, true, CODEC_MASK_CVSD }, // HFP_LINK_SETTINGS_S2
119 {0x000a, 0x01, SCO_PACKET_TYPES_2EV3, true, CODEC_MASK_CVSD }, // HFP_LINK_SETTINGS_S3
120 {0x000c, 0x02, SCO_PACKET_TYPES_2EV3, true, CODEC_MASK_CVSD }, // HFP_LINK_SETTINGS_S4
121 {0x0008, 0x02, SCO_PACKET_TYPES_EV3, true, CODEC_MASK_OTHER}, // HFP_LINK_SETTINGS_T1
122 {0x000d, 0x02, SCO_PACKET_TYPES_2EV3, true, CODEC_MASK_OTHER} // HFP_LINK_SETTINGS_T2
123};
124
125// table 5.8 'mandatory safe settings' for eSCO + similar entries for SCO
126static const struct hfp_mandatory_safe_setting {
127 const uint8_t codec_mask;
128 const bool secure_connection_in_use;
129 hfp_link_settings_t link_setting;
130} hfp_mandatory_safe_settings[] = {
131 { CODEC_MASK_CVSD, false, HFP_LINK_SETTINGS_D1},
132 { CODEC_MASK_CVSD, true, HFP_LINK_SETTINGS_D1},
133 { CODEC_MASK_CVSD, false, HFP_LINK_SETTINGS_S1},
134 { CODEC_MASK_CVSD, true, HFP_LINK_SETTINGS_S4},
135 { CODEC_MASK_OTHER, false, HFP_LINK_SETTINGS_T1},
136 { CODEC_MASK_OTHER, true, HFP_LINK_SETTINGS_T2},
124};
125
126static const char * hfp_hf_features[] = {
127 "EC and/or NR function",
128 "Three-way calling",
129 "CLI presentation capability",
130 "Voice recognition activation",
131 "Remote volume control",

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1904 hfp_connection->packet_types = packet_types;
1905
1906 // get packet types - bits 6-9 are 'don't allow'
1907 uint16_t packet_types_flipped = packet_types ^ 0x03c0;
1908 hci_send_cmd(&hci_setup_synchronous_connection, hfp_connection->acl_handle, 8000, 8000, hfp_link_settings[setting].max_latency,
1909 sco_voice_setting, hfp_link_settings[setting].retransmission_effort, packet_types_flipped);
1910}
1911
137};
138
139static const char * hfp_hf_features[] = {
140 "EC and/or NR function",
141 "Three-way calling",
142 "CLI presentation capability",
143 "Voice recognition activation",
144 "Remote volume control",

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1917 hfp_connection->packet_types = packet_types;
1918
1919 // get packet types - bits 6-9 are 'don't allow'
1920 uint16_t packet_types_flipped = packet_types ^ 0x03c0;
1921 hci_send_cmd(&hci_setup_synchronous_connection, hfp_connection->acl_handle, 8000, 8000, hfp_link_settings[setting].max_latency,
1922 sco_voice_setting, hfp_link_settings[setting].retransmission_effort, packet_types_flipped);
1923}
1924
1912void hfp_accept_synchronous_connection(hfp_connection_t * hfp_connection, bool incoming_eSCO){
1925hfp_link_settings_t hfp_safe_settings_for_context(bool use_eSCO, uint8_t negotiated_codec, bool secure_connection_in_use){
1926 uint8_t i;
1927 hfp_link_settings_t link_setting = HFP_LINK_SETTINGS_NONE;
1928 for (i=0 ; i < ( sizeof(hfp_mandatory_safe_settings) / sizeof(struct hfp_mandatory_safe_setting) ) ; i++){
1929 if (hfp_link_settings[(uint8_t)(hfp_mandatory_safe_settings[i].link_setting)].eSCO != use_eSCO) continue;
1930 if ((hfp_mandatory_safe_settings[i].codec_mask & (1 << negotiated_codec)) == 0) continue;
1931 if (hfp_mandatory_safe_settings[i].secure_connection_in_use != secure_connection_in_use) continue;
1932 link_setting = hfp_mandatory_safe_settings[i].link_setting;
1933 break;
1934 }
1935 return link_setting;
1936}
1913
1937
1914 // remote supported feature eSCO is set if link type is eSCO
1915 // eSCO: S4 - max latency == transmission interval = 0x000c == 12 ms,
1916 uint16_t max_latency;
1917 uint8_t retransmission_effort;
1918 uint16_t packet_types;
1938void hfp_accept_synchronous_connection(hfp_connection_t * hfp_connection, bool use_eSCO){
1919
1939
1920 if (incoming_eSCO && hci_extended_sco_link_supported() && hci_remote_esco_supported(hfp_connection->acl_handle)){
1921 max_latency = 0x000c;
1922 retransmission_effort = 0x02;
1923 // eSCO: EV3 and 2-EV3
1924 packet_types = 0x0048;
1925 } else {
1926 max_latency = 0xffff;
1927 retransmission_effort = 0xff;
1928 // sco: HV1 and HV3
1929 packet_types = 0x005;
1930 }
1940 bool secure_connection_in_use = gap_secure_connection(hfp_connection->acl_handle);
1931
1941
1932 // mSBC only allows for transparent data
1942 // lookup safe settings based on SCO type, SC use and Codec type
1943 hfp_link_settings_t link_setting = hfp_safe_settings_for_context(use_eSCO, hfp_connection->negotiated_codec, secure_connection_in_use);
1944 btstack_assert(link_setting != HFP_LINK_SETTINGS_NONE);
1945
1946 uint16_t max_latency = hfp_link_settings[(uint8_t) link_setting].max_latency;
1947 uint16_t retransmission_effort = hfp_link_settings[(uint8_t) link_setting].retransmission_effort;
1948
1949 // safer to allow more packet types:
1950 uint16_t packet_types = use_eSCO ? (SCO_PACKET_TYPES_EV3 | SCO_PACKET_TYPES_2EV3) : (SCO_PACKET_TYPES_HV1 | SCO_PACKET_TYPES_HV3);
1951
1952 // transparent data for non-CVSD connections or if codec provided by Controller
1933 uint16_t sco_voice_setting = hci_get_sco_voice_setting();
1934 if (hfp_connection->negotiated_codec != HFP_CODEC_CVSD){
1935#ifdef ENABLE_BCM_PCM_WBS
1936 sco_voice_setting = 0x0063; // Transparent data, 16-bit for BCM controllers
1937#else
1938 sco_voice_setting = 0x0043; // Transparent data, 8-bit otherwise
1939#endif
1940 }

--- 273 unchanged lines hidden --- 		1953 uint16_t sco_voice_setting = hci_get_sco_voice_setting();
1954 if (hfp_connection->negotiated_codec != HFP_CODEC_CVSD){
1955#ifdef ENABLE_BCM_PCM_WBS
1956 sco_voice_setting = 0x0063; // Transparent data, 16-bit for BCM controllers
1957#else
1958 sco_voice_setting = 0x0043; // Transparent data, 8-bit otherwise
1959#endif
1960 }

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