hfp.c (b4320e7fd03a9a6c1d049a2558585051dddaebe5) hfp.c (c528139d1e19587a03c0c7e035f7df390c0372fb)
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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117 {0x0007, 0x01, SCO_PACKET_TYPES_EV3, CODEC_MASK_CVSD }, // HFP_LINK_SETTINGS_S1
118 {0x0007, 0x01, SCO_PACKET_TYPES_2EV3, CODEC_MASK_CVSD }, // HFP_LINK_SETTINGS_S2
119 {0x000a, 0x01, SCO_PACKET_TYPES_2EV3, CODEC_MASK_CVSD }, // HFP_LINK_SETTINGS_S3
120 {0x000c, 0x02, SCO_PACKET_TYPES_2EV3, CODEC_MASK_CVSD }, // HFP_LINK_SETTINGS_S4
121 {0x0008, 0x02, SCO_PACKET_TYPES_EV3, CODEC_MASK_OTHER}, // HFP_LINK_SETTINGS_T1
122 {0x000d, 0x02, SCO_PACKET_TYPES_2EV3, CODEC_MASK_OTHER} // HFP_LINK_SETTINGS_T2
123};
124
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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117 {0x0007, 0x01, SCO_PACKET_TYPES_EV3, CODEC_MASK_CVSD }, // HFP_LINK_SETTINGS_S1
118 {0x0007, 0x01, SCO_PACKET_TYPES_2EV3, CODEC_MASK_CVSD }, // HFP_LINK_SETTINGS_S2
119 {0x000a, 0x01, SCO_PACKET_TYPES_2EV3, CODEC_MASK_CVSD }, // HFP_LINK_SETTINGS_S3
120 {0x000c, 0x02, SCO_PACKET_TYPES_2EV3, CODEC_MASK_CVSD }, // HFP_LINK_SETTINGS_S4
121 {0x0008, 0x02, SCO_PACKET_TYPES_EV3, CODEC_MASK_OTHER}, // HFP_LINK_SETTINGS_T1
122 {0x000d, 0x02, SCO_PACKET_TYPES_2EV3, 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},
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",
145
146 "Enhanced call status",

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1934 hfp_connection->packet_types = packet_types;
1935
1936 // get packet types - bits 6-9 are 'don't allow'
1937 uint16_t packet_types_flipped = packet_types ^ 0x03c0;
1938 hci_send_cmd(&hci_setup_synchronous_connection, hfp_connection->acl_handle, 8000, 8000, hfp_link_settings[setting].max_latency,
1939 sco_voice_setting, hfp_link_settings[setting].retransmission_effort, packet_types_flipped);
1940}
1941
125static const char * hfp_hf_features[] = {
126 "EC and/or NR function",
127 "Three-way calling",
128 "CLI presentation capability",
129 "Voice recognition activation",
130 "Remote volume control",
131
132 "Enhanced call status",

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1920 hfp_connection->packet_types = packet_types;
1921
1922 // get packet types - bits 6-9 are 'don't allow'
1923 uint16_t packet_types_flipped = packet_types ^ 0x03c0;
1924 hci_send_cmd(&hci_setup_synchronous_connection, hfp_connection->acl_handle, 8000, 8000, hfp_link_settings[setting].max_latency,
1925 sco_voice_setting, hfp_link_settings[setting].retransmission_effort, packet_types_flipped);
1926}
1927
1942hfp_link_settings_t hfp_safe_settings_for_context(bool use_eSCO, uint8_t negotiated_codec, bool secure_connection_in_use){
1943 uint8_t i;
1944 hfp_link_settings_t link_setting = HFP_LINK_SETTINGS_NONE;
1945 for (i=0 ; i < (sizeof(hfp_mandatory_safe_settings) / sizeof(struct hfp_mandatory_safe_setting)) ; i++){
1946 uint16_t packet_types = hfp_link_settings[(uint8_t)(hfp_mandatory_safe_settings[i].link_setting)].packet_types;
1947 bool is_eSCO_setting = (packet_types & SCO_PACKET_TYPES_ESCO) != 0;
1948 if (is_eSCO_setting != use_eSCO) continue;
1949 if ((hfp_mandatory_safe_settings[i].codec_mask & (1 << negotiated_codec)) == 0) continue;
1950 if (hfp_mandatory_safe_settings[i].secure_connection_in_use != secure_connection_in_use) continue;
1951 link_setting = hfp_mandatory_safe_settings[i].link_setting;
1952 break;
1953 }
1954 return link_setting;
1955}
1956
1957void hfp_accept_synchronous_connection(hfp_connection_t * hfp_connection, bool use_eSCO){
1958
1928void hfp_accept_synchronous_connection(hfp_connection_t * hfp_connection, bool use_eSCO){
1929
1959 bool secure_connection_in_use = gap_secure_connection(hfp_connection->acl_handle);
1930 // use "don't care" where possible
1931 uint16_t max_latency = 0xffff;
1932 uint16_t retransmission_effort = 0xff;
1960
1933
1961 // lookup safe settings based on SCO type, SC use and Codec type
1962 hfp_link_settings_t link_setting = hfp_safe_settings_for_context(use_eSCO, hfp_connection->negotiated_codec, secure_connection_in_use);
1963 btstack_assert(link_setting != HFP_LINK_SETTINGS_NONE);
1964
1965 uint16_t max_latency = hfp_link_settings[(uint8_t) link_setting].max_latency;
1966 uint16_t retransmission_effort = hfp_link_settings[(uint8_t) link_setting].retransmission_effort;
1967
1968 // safer to allow more packet types:
1969 uint16_t packet_types = use_eSCO ? (SCO_PACKET_TYPES_EV3 | SCO_PACKET_TYPES_2EV3) : (SCO_PACKET_TYPES_HV1 | SCO_PACKET_TYPES_HV3);
1970
1971 // transparent data for non-CVSD connections or if codec provided by Controller
1972 uint16_t sco_voice_setting = hci_get_sco_voice_setting();
1973 if (hfp_connection->negotiated_codec != HFP_CODEC_CVSD){
1974#ifdef ENABLE_BCM_PCM_WBS
1975 sco_voice_setting = 0x0063; // Transparent data, 16-bit for BCM controllers
1976#else
1977 sco_voice_setting = 0x0043; // Transparent data, 8-bit otherwise
1978#endif
1979 }
1980
1981 // filter packet types
1934 // transparent data for non-CVSD connections or if codec provided by Controller
1935 uint16_t sco_voice_setting = hci_get_sco_voice_setting();
1936 if (hfp_connection->negotiated_codec != HFP_CODEC_CVSD){
1937#ifdef ENABLE_BCM_PCM_WBS
1938 sco_voice_setting = 0x0063; // Transparent data, 16-bit for BCM controllers
1939#else
1940 sco_voice_setting = 0x0043; // Transparent data, 8-bit otherwise
1941#endif
1942 }
1943
1944 // filter packet types
1982 packet_types &= hfp_get_sco_packet_types();
1983
1945 uint16_t packet_types = hfp_get_sco_packet_types();
1984 hfp_connection->packet_types = packet_types;
1985
1986 // bits 6-9 are 'don't allow'
1987 uint16_t packet_types_flipped = packet_types ^ 0x3c0;
1988
1989 log_info("HFP: sending hci_accept_connection_request, packet types 0x%04x, sco_voice_setting 0x%02x", packet_types, sco_voice_setting);
1990 hci_send_cmd(&hci_accept_synchronous_connection, hfp_connection->remote_addr, 8000, 8000, max_latency,
1991 sco_voice_setting, retransmission_effort, packet_types_flipped);

--- 266 unchanged lines hidden --- 		1946 hfp_connection->packet_types = packet_types;
1947
1948 // bits 6-9 are 'don't allow'
1949 uint16_t packet_types_flipped = packet_types ^ 0x3c0;
1950
1951 log_info("HFP: sending hci_accept_connection_request, packet types 0x%04x, sco_voice_setting 0x%02x", packet_types, sco_voice_setting);
1952 hci_send_cmd(&hci_accept_synchronous_connection, hfp_connection->remote_addr, 8000, 8000, max_latency,
1953 sco_voice_setting, retransmission_effort, packet_types_flipped);

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