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hci: calculate sco_packet_length based on number of concurrent sco connections - fixes #129

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Matthias Ringwald 2018-05-15 17:18:01 +02:00
parent cf119f3b14
commit a3069afebb
1 changed files with 8 additions and 1 deletions
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9
src/hci.c
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@ -4675,13 +4675,20 @@ uint16_t hci_get_sco_voice_setting(void){
* @return Length of SCO packets in bytes (not audio frames)
*/
int hci_get_sco_packet_length(void){
int sco_packet_length = 0;
#ifdef ENABLE_CLASSIC
#ifdef ENABLE_SCO_OVER_HCI
// see Core Spec for H2 USB Transfer.
// CVSD requires twice as much bytes
int multiplier = hci_stack->sco_voice_setting & 0x0020 ? 2 : 1;
// 3 byte SCO header + 24 bytes per connection
return 3 + 24 * hci_number_sco_connections() * multiplier;
sco_packet_length = 3 + 24 * hci_number_sco_connections() * multiplier;
#endif
#endif
return sco_packet_length;
}
/**