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hci: add hci_request_sco_can_send_now_event

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This commit is contained in:
Matthias Ringwald 2016-04-08 12:30:35 +02:00
parent 282ceebcb6
commit d057580e4d
4 changed files with 48 additions and 42 deletions
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15
example/hsp_ag_demo.c
View File

@ -190,13 +190,8 @@ static void stdin_process(btstack_data_source_t *ds, btstack_data_source_callbac
}
#endif
static void try_send_sco(void){
return;
static void send_sco_data(void){
if (!sco_handle) return;
if (!hci_can_send_sco_packet_now()) {
// printf("try_send_sco, cannot send now\n");
return;
}
const int sco_packet_length = hci_get_sco_packet_length();
const int sco_payload_length = sco_packet_length - 3;
@ -215,6 +210,10 @@ static void try_send_sco(void){
if (phase >= sizeof(sine)) phase = 0;
}
hci_send_sco_packet_buffer(sco_packet_length);
// request another send event
hci_request_sco_can_send_now_event();
static int count = 0;
count++;
if ((count & SCO_REPORT_PERIOD) == 0) printf("Sent %u\n", count);
@ -236,7 +235,7 @@ static void packet_handler(uint8_t * event, uint16_t event_size){
show_usage();
break;
case HCI_EVENT_SCO_CAN_SEND_NOW:
try_send_sco();
send_sco_data();
break;
case HCI_EVENT_HSP_META:
switch (event[2]) {
@ -261,7 +260,7 @@ static void packet_handler(uint8_t * event, uint16_t event_size){
} else {
sco_handle = hsp_subevent_audio_connection_complete_get_handle(event);
printf("Audio connection established with SCO handle 0x%04x.\n", sco_handle);
try_send_sco();
hci_request_sco_can_send_now_event();
}
break;
case HSP_SUBEVENT_AUDIO_DISCONNECTION_COMPLETE:

49
example/hsp_hs_demo.c
View File

@ -190,32 +190,33 @@ static void stdin_process(btstack_data_source_t *ds, btstack_data_source_callbac
}
#endif
static void try_send_sco(void){
static void send_sco_data(void){
if (!sco_handle) return;
while (hci_can_send_sco_packet_now()) {
const int sco_packet_length = hci_get_sco_packet_length();
const int sco_payload_length = sco_packet_length - 3;
const int frames_per_packet = sco_payload_length; // for 8-bit data. for 16-bit data it's /2
const int sco_packet_length = hci_get_sco_packet_length();
const int sco_payload_length = sco_packet_length - 3;
const int frames_per_packet = sco_payload_length; // for 8-bit data. for 16-bit data it's /2
hci_reserve_packet_buffer();
uint8_t * sco_packet = hci_get_outgoing_packet_buffer();
// set handle + flags
little_endian_store_16(sco_packet, 0, sco_handle);
// set len
sco_packet[2] = sco_payload_length;
int i;
for (i=0;i<frames_per_packet;i++){
sco_packet[3+i] = sine[phase];
phase++;
if (phase >= sizeof(sine)) phase = 0;
}
hci_send_sco_packet_buffer(sco_packet_length);
static int count = 0;
count++;
if ((count & 15) == 0) printf("Sent %u\n", count);
hci_reserve_packet_buffer();
uint8_t * sco_packet = hci_get_outgoing_packet_buffer();
// set handle + flags
little_endian_store_16(sco_packet, 0, sco_handle);
// set len
sco_packet[2] = sco_payload_length;
int i;
for (i=0;i<frames_per_packet;i++){
sco_packet[3+i] = sine[phase];
phase++;
if (phase >= sizeof(sine)) phase = 0;
}
hci_send_sco_packet_buffer(sco_packet_length);
// request another send event
hci_request_sco_can_send_now_event();
static int count = 0;
count++;
if ((count & 15) == 0) printf("Sent %u\n", count);
}
static void sco_packet_handler(uint8_t packet_type, uint8_t * packet, uint16_t size){
@ -233,7 +234,7 @@ static void packet_handler(uint8_t * event, uint16_t event_size){
show_usage();
break;
case HCI_EVENT_SCO_CAN_SEND_NOW:
try_send_sco();
send_sco_data();
break;
case HCI_EVENT_HSP_META:
switch (event[2]) {
@ -258,7 +259,7 @@ static void packet_handler(uint8_t * event, uint16_t event_size){
} else {
sco_handle = hsp_subevent_audio_connection_complete_get_handle(event);
printf("Audio connection established with SCO handle 0x%04x.\n", sco_handle);
try_send_sco();
hci_request_sco_can_send_now_event();
}
break;
case HSP_SUBEVENT_AUDIO_DISCONNECTION_COMPLETE:

15
src/hci.c
View File

@ -409,22 +409,21 @@ int hci_can_send_acl_packet_now(hci_con_handle_t con_handle){
}
int hci_can_send_prepared_sco_packet_now(void){
if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) {
hci_stack->sco_waiting_for_can_send_now = 1;
return 0;
}
if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return 0;
if (!hci_stack->synchronous_flow_control_enabled) return 1;
return hci_number_free_sco_slots() > 0;
}
int hci_can_send_sco_packet_now(void){
if (hci_stack->hci_packet_buffer_reserved) {
hci_stack->sco_waiting_for_can_send_now = 1;
return 0;
}
if (hci_stack->hci_packet_buffer_reserved) return 0;
return hci_can_send_prepared_sco_packet_now();
}
void hci_request_sco_can_send_now_event(void){
hci_stack->sco_waiting_for_can_send_now = 1;
hci_notify_if_sco_can_send_now();
}
// used for internal checks in l2cap.c
int hci_is_packet_buffer_reserved(void){
return hci_stack->hci_packet_buffer_reserved;

11
src/hci.h
View File

@ -758,7 +758,14 @@ int hci_send_cmd(const hci_cmd_t *cmd, ...);
int hci_get_sco_packet_length(void);
/**
* @brief Check hci packet buffer and if SCO packet can be sent to controller
* @brief Request emission of HCI_EVENT_SCO_CAN_SEND_NOW as soon as possible
* @note HCI_EVENT_SCO_CAN_SEND_NOW might be emitted during call to this function
* so packet handler should be ready to handle it
*/
void hci_request_sco_can_send_now_event(void);
/**
* @brief Check HCI packet buffer and if SCO packet can be sent to controller
*/
int hci_can_send_sco_packet_now(void);
@ -768,7 +775,7 @@ int hci_can_send_sco_packet_now(void);
int hci_can_send_prepared_sco_packet_now(void);
/**
* @brief Send SCO packet prepared in hci packet buffer
* @brief Send SCO packet prepared in HCI packet buffer
*/
int hci_send_sco_packet_buffer(int size);