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gatt-service/vocs: emit events to the application

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This commit is contained in:
Milanka Ringwald 2022-01-25 17:08:29 +01:00
parent 511344e1e5
commit 043b518bec
2 changed files with 58 additions and 6 deletions
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62
src/ble/gatt-service/volume_offset_control_service_server.c
View File

@ -179,6 +179,58 @@ static bool vocs_set_audio_location(volume_offset_control_service_server_t * voc
vocs->info.audio_location = audio_location;
return true;
}
static void vocs_emit_volume_offset(volume_offset_control_service_server_t * vocs){
btstack_assert(vocs->info.packet_handler != NULL);
uint8_t event[8];
uint8_t pos = 0;
event[pos++] = HCI_EVENT_GATTSERVICE_META;
event[pos++] = sizeof(event) - 2;
event[pos++] = GATTSERVICE_SUBEVENT_VOCS_VOLUME_OFFSET;
little_endian_store_16(event, pos, vocs->con_handle);
pos += 2;
event[pos++] = vocs->index;
little_endian_store_16(event, pos, vocs->info.volume_offset);
pos += 2;
(*vocs->info.packet_handler)(HCI_EVENT_PACKET, 0, event, sizeof(event));
}
static void vocs_emit_audio_location(volume_offset_control_service_server_t * vocs){
btstack_assert(vocs->info.packet_handler != NULL);
uint8_t event[10];
uint8_t pos = 0;
event[pos++] = HCI_EVENT_GATTSERVICE_META;
event[pos++] = sizeof(event) - 2;
event[pos++] = GATTSERVICE_SUBEVENT_VOCS_AUDIO_LOCATION;
little_endian_store_16(event, pos, vocs->con_handle);
pos += 2;
event[pos++] = vocs->index;
little_endian_store_32(event, pos, vocs->info.audio_location);
pos += 4;
(*vocs->info.packet_handler)(HCI_EVENT_PACKET, 0, event, sizeof(event));
}
static void vocs_emit_audio_output_description(volume_offset_control_service_server_t * vocs){
btstack_assert(vocs->info.packet_handler != NULL);
uint8_t event[7 + VOCS_MAX_AUDIO_OUTPUT_DESCRIPTION_LENGTH];
uint8_t pos = 0;
event[pos++] = HCI_EVENT_GATTSERVICE_META;
event[pos++] = sizeof(event) - 2;
event[pos++] = GATTSERVICE_SUBEVENT_VOCS_AUDIO_OUTPUT_DESC_CHANGED;
little_endian_store_16(event, pos, vocs->con_handle);
pos += 2;
event[pos++] = vocs->index;
event[pos++] = (uint8_t)vocs->audio_output_description_len;
memcpy(&event[pos], (uint8_t *)vocs->info.audio_output_description, vocs->audio_output_description_len + 1);
pos += vocs->audio_output_description_len;
event[pos++] = 0;
(*vocs->info.packet_handler)(HCI_EVENT_PACKET, 0, event, pos);
}
static int vocs_write_callback(hci_con_handle_t con_handle, uint16_t attribute_handle, uint16_t transaction_mode, uint16_t offset, uint8_t *buffer, uint16_t buffer_size){
UNUSED(con_handle);
UNUSED(transaction_mode);
@ -214,6 +266,7 @@ static int vocs_write_callback(hci_con_handle_t con_handle, uint16_t attribute_h
if (!vocs_set_volume_offset(vocs, volume_offset)) {
return VOCS_ERROR_CODE_VALUE_OUT_OF_RANGE;
}
vocs_emit_volume_offset(vocs);
break;
default:
@ -230,13 +283,15 @@ static int vocs_write_callback(hci_con_handle_t con_handle, uint16_t attribute_h
}
uint32_t audio_location = little_endian_read_32(buffer, 0);
if (vocs_set_audio_location(vocs, audio_location)) {
vocs_emit_audio_location(vocs);
volume_offset_control_service_server_set_callback(vocs, VOCS_TASK_SEND_AUDIO_LOCATION);
}
}
if (attribute_handle == vocs->audio_output_description_value_handle){
vocs->audio_output_description_len = btstack_min(VOCS_MAX_AUDIO_OUTPUT_DESCRIPTION_LENGTH - 1, buffer_size);
btstack_strcpy(vocs->info.audio_output_description, vocs->audio_output_description_len, (char *)buffer);
vocs->audio_output_description_len = strlen(vocs->info.audio_output_description);
vocs_emit_audio_output_description(vocs);
volume_offset_control_service_server_set_callback(vocs, VOCS_TASK_SEND_AUDIO_OUTPUT_DESCRIPTION);
}
@ -332,7 +387,6 @@ void volume_offset_control_service_server_init(volume_offset_control_service_ser
uint8_t volume_offset_control_service_server_set_volume_offset(volume_offset_control_service_server_t * vocs, int16_t volume_offset){
btstack_assert(vocs != NULL);
vocs->info.volume_offset = volume_offset;
volume_offset_control_service_update_change_counter(vocs);
volume_offset_control_service_server_set_callback(vocs, VOCS_TASK_SEND_VOLUME_OFFSET);
@ -341,7 +395,6 @@ uint8_t volume_offset_control_service_server_set_volume_offset(volume_offset_con
uint8_t volume_offset_control_service_server_set_audio_location(volume_offset_control_service_server_t * vocs, uint32_t audio_location){
btstack_assert(vocs != NULL);
vocs->info.audio_location = audio_location;
volume_offset_control_service_server_set_callback(vocs, VOCS_TASK_SEND_AUDIO_LOCATION);
return ERROR_CODE_SUCCESS;
@ -349,8 +402,7 @@ uint8_t volume_offset_control_service_server_set_audio_location(volume_offset_co
void volume_offset_control_service_server_set_audio_output_description(volume_offset_control_service_server_t * vocs, const char * audio_output_desc){
btstack_assert(vocs != NULL);
vocs->audio_output_description_len = btstack_min(VOCS_MAX_AUDIO_OUTPUT_DESCRIPTION_LENGTH - 1, sizeof(audio_output_desc));
btstack_strcpy(vocs->info.audio_output_description, vocs->audio_output_description_len, (char *)audio_output_desc);
vocs->audio_output_description_len = strlen(vocs->info.audio_output_description);
volume_offset_control_service_server_set_callback(vocs, VOCS_TASK_SEND_AUDIO_OUTPUT_DESCRIPTION);
}

2
src/ble/gatt-service/volume_offset_control_service_server.h
View File

@ -57,7 +57,7 @@ extern "C" {
*
*/
#define VOCS_MAX_NUM_SERVICES 5
#define VOCS_MAX_AUDIO_OUTPUT_DESCRIPTION_LENGTH 20
#define VOCS_MAX_AUDIO_OUTPUT_DESCRIPTION_LENGTH 30
#define VOCS_ERROR_CODE_INVALID_CHANGE_COUNTER 0x80
#define VOCS_ERROR_CODE_OPCODE_NOT_SUPPORTED 0x81