* [PATCH BlueZ v4 2/3] shared/vcp: Add initial code for handling VOCS
2023-06-09 9:42 [PATCH BlueZ v4 0/3] Code handling for VOCS service Nitin Jadhav
2023-06-09 9:42 ` [PATCH BlueZ v4 1/3] lib/uuid.h: Add VOCS characteristic uuid(s) Nitin Jadhav
@ 2023-06-09 9:42 ` Nitin Jadhav
2023-06-09 9:42 ` [PATCH BlueZ v4 3/3] shared/vcp.c: Make VOCS (Secondary) as an included service of VCS (Primary) Nitin Jadhav
2 siblings, 0 replies; 5+ messages in thread
From: Nitin Jadhav @ 2023-06-09 9:42 UTC (permalink / raw)
To: linux-bluetooth
Cc: devyani.godbole, mihai-octavian.urzica, silviu.barbulescu,
nitin.jadhav
Summary:
- This adds implementation for VOCS service and characteristics
- Implementation based on VOCS_v1.0.pdf specification
- Tested using PTS with reference to VOCS.TS.p1.pdf
---
v2: Corrected prefixs and cosmetic changes (Luiz Augusto von Dentz)
v3: Commit message modified and fixed long line length warning (Paul
Menzel)
v4: Used BIT macro to set bit of audio location macros (Luiz Augusto
von Dentz)
---
src/shared/vcp.c | 549 +++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 549 insertions(+)
diff --git a/src/shared/vcp.c b/src/shared/vcp.c
index 5459cf892..6fc788e13 100644
--- a/src/shared/vcp.c
+++ b/src/shared/vcp.c
@@ -36,9 +36,40 @@
#define BT_ATT_ERROR_INVALID_CHANGE_COUNTER 0x80
#define BT_ATT_ERROR_OPCODE_NOT_SUPPORTED 0x81
+#define BT_VCP_NA BIT(0)
+#define BT_VCP_FRONT_LEFT BIT(1)
+#define BT_VCP_FRONT_RIGHT BIT(2)
+#define BT_VCP_FRONT_CENTER BIT(3)
+#define BT_VCP_LOW_FRQ_EFF_1 BIT(4)
+#define BT_VCP_BACK_LEFT BIT(5)
+#define BT_VCP_BACK_RIGHT BIT(6)
+#define BT_VCP_FRONT_LEFT_CENTER BIT(7)
+#define BT_VCP_FRONT_RIGHT_CENTER BIT(8)
+#define BT_VCP_BACK_CENTER BIT(9)
+#define BT_VCP_LOW_FRQ_EFF_2 BIT(10)
+#define BT_VCP_SIDE_LEFT BIT(11)
+#define BT_VCP_SIDE_RIGHT BIT(12)
+#define BT_VCP_TOP_FRONT_LEFT BIT(13)
+#define BT_VCP_TOP_FRONT_RIGHT BIT(14)
+#define BT_VCP_TOP_FRONT_CENTER BIT(15)
+#define BT_VCP_TOP_CENTER BIT(16)
+#define BT_VCP_TOP_BACK_LEFT BIT(17)
+#define BT_VCP_TOP_BACK_RIGHT BIT(18)
+#define BT_VCP_TOP_SIDE_LEFT BIT(19)
+#define BT_VCP_TOP_SIDE_RIGHT BIT(20)
+#define BT_VCP_TOP_BACK_CENTER BIT(21)
+#define BT_VCP_BOTTOM_FRONT_CENTER BIT(22)
+#define BT_VCP_BOTTOM_FRONT_LEFT BIT(23)
+#define BT_VCP_BOTTOM_FRONT_RIGHT BIT(24)
+#define BT_VCP_FRONT_LEFT_WIDE BIT(25)
+#define BT_VCP_FRONT_RIGHT_WIDE BIT(26)
+#define BT_VCP_LEFT_SURROUND BIT(27)
+#define BT_VCP_RIGHT_SURROUND BIT(28)
+
struct bt_vcp_db {
struct gatt_db *db;
struct bt_vcs *vcs;
+ struct bt_vocs *vocs;
};
typedef void (*vcp_func_t)(struct bt_vcp *vcp, bool success, uint8_t att_ecode,
@@ -57,11 +88,21 @@ struct bt_vcs_param {
uint8_t change_counter;
} __packed;
+struct bt_vocs_param {
+ uint8_t op;
+ uint8_t change_counter;
+} __packed;
+
struct bt_vcs_ab_vol {
uint8_t change_counter;
uint8_t vol_set;
} __packed;
+struct bt_vocs_set_vol_off {
+ uint8_t change_counter;
+ uint8_t set_vol_offset;
+} __packed;
+
struct bt_vcp_cb {
unsigned int id;
bt_vcp_func_t attached;
@@ -89,6 +130,10 @@ struct bt_vcp {
unsigned int vstate_id;
unsigned int vflag_id;
+ unsigned int state_id;
+ unsigned int audio_loc_id;
+ unsigned int ao_dec_id;
+
struct queue *notify;
struct queue *pending;
@@ -120,6 +165,27 @@ struct bt_vcs {
struct gatt_db_attribute *vf_ccc;
};
+/* Contains local bt_vcp_db */
+struct vol_offset_state {
+ uint16_t vol_offset;
+ uint8_t counter;
+} __packed;
+
+struct bt_vocs {
+ struct bt_vcp_db *vdb;
+ struct vol_offset_state *vostate;
+ uint32_t vocs_audio_loc;
+ char *vocs_ao_dec;
+ struct gatt_db_attribute *service;
+ struct gatt_db_attribute *vos;
+ struct gatt_db_attribute *vos_ccc;
+ struct gatt_db_attribute *voal;
+ struct gatt_db_attribute *voal_ccc;
+ struct gatt_db_attribute *vo_cp;
+ struct gatt_db_attribute *voaodec;
+ struct gatt_db_attribute *voaodec_ccc;
+};
+
static struct queue *vcp_db;
static struct queue *vcp_cbs;
static struct queue *sessions;
@@ -159,6 +225,17 @@ static struct vol_state *vdb_get_vstate(struct bt_vcp_db *vdb)
return NULL;
}
+static struct vol_offset_state *vdb_get_vostate(struct bt_vcp_db *vdb)
+{
+ if (!vdb->vocs)
+ return NULL;
+
+ if (vdb->vocs->vostate)
+ return vdb->vocs->vostate;
+
+ return NULL;
+}
+
static struct bt_vcs *vcp_get_vcs(struct bt_vcp *vcp)
{
if (!vcp)
@@ -173,6 +250,20 @@ static struct bt_vcs *vcp_get_vcs(struct bt_vcp *vcp)
return vcp->rdb->vcs;
}
+static struct bt_vocs *vcp_get_vocs(struct bt_vcp *vcp)
+{
+ if (!vcp)
+ return NULL;
+
+ if (vcp->rdb->vocs)
+ return vcp->rdb->vocs;
+
+ vcp->rdb->vocs = new0(struct bt_vocs, 1);
+ vcp->rdb->vocs->vdb = vcp->rdb;
+
+ return vcp->rdb->vocs;
+}
+
static void vcp_detached(void *data, void *user_data)
{
struct bt_vcp_cb *cb = data;
@@ -202,6 +293,7 @@ static void vcp_db_free(void *data)
gatt_db_unref(vdb->db);
free(vdb->vcs);
+ free(vdb->vocs);
free(vdb);
}
@@ -583,6 +675,45 @@ static uint8_t vcs_mute(struct bt_vcs *vcs, struct bt_vcp *vcp,
return 0;
}
+static uint8_t vocs_set_vol_offset(struct bt_vocs *vocs, struct bt_vcp *vcp,
+ struct iovec *iov)
+{
+ struct bt_vcp_db *vdb;
+ struct vol_offset_state *vstate;
+ struct bt_vocs_set_vol_off *req;
+
+ DBG(vcp, "Set Volume Offset");
+
+ vdb = vcp_get_vdb(vcp);
+ if (!vdb) {
+ DBG(vcp, "error: VDB not available");
+ return 0;
+ }
+
+ vstate = vdb_get_vostate(vdb);
+ if (!vstate) {
+ DBG(vcp, "error: VSTATE not available");
+ return 0;
+ }
+
+ req = iov_pull_mem(iov, sizeof(*req));
+ if (!req)
+ return 0;
+
+ if (req->change_counter != vstate->counter) {
+ DBG(vcp, "Change Counter Mismatch Volume not decremented!");
+ return BT_ATT_ERROR_INVALID_CHANGE_COUNTER;
+ }
+
+ vstate->vol_offset = req->set_vol_offset;
+ vstate->counter = -~vstate->counter; /*Increment Change Counter*/
+
+ gatt_db_attribute_notify(vdb->vocs->vos, (void *)vstate,
+ sizeof(struct vol_offset_state),
+ bt_vcp_get_att(vcp));
+ return 0;
+}
+
#define BT_VCS_REL_VOL_DOWN 0x00
#define BT_VCS_REL_VOL_UP 0x01
#define BT_VCS_UNMUTE_REL_VOL_DOWN 0x02
@@ -591,6 +722,8 @@ static uint8_t vcs_mute(struct bt_vcs *vcs, struct bt_vcp *vcp,
#define BT_VCS_UNMUTE 0x05
#define BT_VCS_MUTE 0x06
+#define BT_VOCS_SET_VOL_OFFSET 0x01
+
#define VCS_OP(_str, _op, _size, _func) \
{ \
.str = _str, \
@@ -623,6 +756,26 @@ struct vcs_op_handler {
{}
};
+#define VOCS_OP(_str, _op, _size, _func) \
+ { \
+ .str = _str, \
+ .op = _op, \
+ .size = _size, \
+ .func = _func, \
+ }
+
+struct vocs_op_handler {
+ const char *str;
+ uint8_t op;
+ size_t size;
+ uint8_t (*func)(struct bt_vocs *vocs, struct bt_vcp *vcp,
+ struct iovec *iov);
+} vocp_handlers[] = {
+ VOCS_OP("Set Volume Offset", BT_VOCS_SET_VOL_OFFSET,
+ sizeof(uint8_t), vocs_set_vol_offset),
+ {}
+};
+
static void vcs_cp_write(struct gatt_db_attribute *attrib,
unsigned int id, uint16_t offset,
const uint8_t *value, size_t len,
@@ -683,6 +836,66 @@ respond:
gatt_db_attribute_write_result(attrib, id, ret);
}
+static void vocs_cp_write(struct gatt_db_attribute *attrib,
+ unsigned int id, uint16_t offset,
+ const uint8_t *value, size_t len,
+ uint8_t opcode, struct bt_att *att,
+ void *user_data)
+{
+ struct bt_vocs *vocs = user_data;
+ struct bt_vcp *vcp = vcp_get_session(att, vocs->vdb->db);
+ struct iovec iov = {
+ .iov_base = (void *) value,
+ .iov_len = len,
+ };
+ uint8_t *vcp_op;
+ struct vocs_op_handler *handler;
+ uint8_t ret = BT_ATT_ERROR_REQUEST_NOT_SUPPORTED;
+
+ DBG(vcp, "VOCP Control Point Write");
+
+ if (offset) {
+ DBG(vcp, "invalid offset %d", offset);
+ ret = BT_ATT_ERROR_INVALID_OFFSET;
+ goto respond;
+ }
+
+ if (len < sizeof(*vcp_op)) {
+ DBG(vcp, "invalid len %ld < %ld sizeof(*param)", len,
+ sizeof(*vcp_op));
+ ret = BT_ATT_ERROR_INVALID_ATTRIBUTE_VALUE_LEN;
+ goto respond;
+ }
+
+ vcp_op = iov_pull_mem(&iov, sizeof(*vcp_op));
+
+ for (handler = vocp_handlers; handler && handler->str; handler++) {
+ if (handler->op != *vcp_op)
+ continue;
+
+ if (iov.iov_len < handler->size) {
+ DBG(vcp, "invalid len %ld < %ld handler->size", len,
+ handler->size);
+ ret = BT_ATT_ERROR_OPCODE_NOT_SUPPORTED;
+ goto respond;
+ }
+
+ break;
+ }
+
+ if (handler && handler->str) {
+ DBG(vcp, "%s", handler->str);
+
+ ret = handler->func(vocs, vcp, &iov);
+ } else {
+ DBG(vcp, "Unknown opcode 0x%02x", *vcp_op);
+ ret = BT_ATT_ERROR_OPCODE_NOT_SUPPORTED;
+ }
+
+respond:
+ gatt_db_attribute_write_result(attrib, id, ret);
+}
+
static void vcs_state_read(struct gatt_db_attribute *attrib,
unsigned int id, uint16_t offset,
uint8_t opcode, struct bt_att *att,
@@ -698,6 +911,21 @@ static void vcs_state_read(struct gatt_db_attribute *attrib,
iov.iov_len);
}
+static void vocs_state_read(struct gatt_db_attribute *attrib,
+ unsigned int id, uint16_t offset,
+ uint8_t opcode, struct bt_att *att,
+ void *user_data)
+{
+ struct bt_vocs *vocs = user_data;
+ struct iovec iov;
+
+ iov.iov_base = vocs->vostate;
+ iov.iov_len = sizeof(*vocs->vostate);
+
+ gatt_db_attribute_read_result(attrib, id, 0, iov.iov_base,
+ iov.iov_len);
+}
+
static void vcs_flag_read(struct gatt_db_attribute *attrib,
unsigned int id, uint16_t offset,
uint8_t opcode, struct bt_att *att,
@@ -713,6 +941,36 @@ static void vcs_flag_read(struct gatt_db_attribute *attrib,
iov.iov_len);
}
+static void vocs_voal_read(struct gatt_db_attribute *attrib,
+ unsigned int id, uint16_t offset,
+ uint8_t opcode, struct bt_att *att,
+ void *user_data)
+{
+ struct bt_vocs *vocs = user_data;
+ struct iovec iov;
+
+ iov.iov_base = &vocs->vocs_audio_loc;
+ iov.iov_len = sizeof(vocs->vocs_audio_loc);
+
+ gatt_db_attribute_read_result(attrib, id, 0, iov.iov_base,
+ iov.iov_len);
+}
+
+static void vocs_voaodec_read(struct gatt_db_attribute *attrib,
+ unsigned int id, uint16_t offset,
+ uint8_t opcode, struct bt_att *att,
+ void *user_data)
+{
+ struct bt_vocs *vocs = user_data;
+ struct iovec iov;
+
+ iov.iov_base = &vocs->vocs_ao_dec;
+ iov.iov_len = strlen(vocs->vocs_ao_dec);
+
+ gatt_db_attribute_read_result(attrib, id, 0, iov.iov_base,
+ iov.iov_len);
+}
+
static struct bt_vcs *vcs_new(struct gatt_db *db)
{
struct bt_vcs *vcs;
@@ -771,6 +1029,74 @@ static struct bt_vcs *vcs_new(struct gatt_db *db)
return vcs;
}
+static struct bt_vocs *vocs_new(struct gatt_db *db)
+{
+ struct bt_vocs *vocs;
+ struct vol_offset_state *vostate;
+ bt_uuid_t uuid;
+
+ if (!db)
+ return NULL;
+
+ vocs = new0(struct bt_vocs, 1);
+
+ vostate = new0(struct vol_offset_state, 1);
+
+ vocs->vostate = vostate;
+ vocs->vocs_audio_loc = BT_VCP_FRONT_LEFT;
+ vocs->vocs_ao_dec = "Left Speaker";
+
+ /* Populate DB with VOCS attributes */
+ bt_uuid16_create(&uuid, VOL_OFFSET_CS_UUID);
+ vocs->service = gatt_db_add_service(db, &uuid, true, 9);
+
+ bt_uuid16_create(&uuid, VOCS_STATE_CHAR_UUID);
+ vocs->vos = gatt_db_service_add_characteristic(vocs->service,
+ &uuid,
+ BT_ATT_PERM_READ,
+ BT_GATT_CHRC_PROP_READ |
+ BT_GATT_CHRC_PROP_NOTIFY,
+ vocs_state_read, NULL,
+ vocs);
+
+ vocs->vos_ccc = gatt_db_service_add_ccc(vocs->service,
+ BT_ATT_PERM_READ | BT_ATT_PERM_WRITE);
+
+ bt_uuid16_create(&uuid, VOCS_AUDIO_LOC_CHRC_UUID);
+ vocs->voal = gatt_db_service_add_characteristic(vocs->service,
+ &uuid,
+ BT_ATT_PERM_READ,
+ BT_GATT_CHRC_PROP_READ |
+ BT_GATT_CHRC_PROP_NOTIFY,
+ vocs_voal_read, NULL,
+ vocs);
+
+ vocs->voal_ccc = gatt_db_service_add_ccc(vocs->service,
+ BT_ATT_PERM_READ | BT_ATT_PERM_WRITE);
+
+ bt_uuid16_create(&uuid, VOCS_CP_CHRC_UUID);
+ vocs->vo_cp = gatt_db_service_add_characteristic(vocs->service,
+ &uuid,
+ BT_ATT_PERM_WRITE,
+ BT_GATT_CHRC_PROP_WRITE,
+ NULL, vocs_cp_write,
+ vocs);
+
+ bt_uuid16_create(&uuid, VOCS_AUDIO_OP_DESC_CHAR_UUID);
+ vocs->voaodec = gatt_db_service_add_characteristic(vocs->service,
+ &uuid,
+ BT_ATT_PERM_READ,
+ BT_GATT_CHRC_PROP_READ |
+ BT_GATT_CHRC_PROP_NOTIFY,
+ vocs_voaodec_read, NULL,
+ vocs);
+
+ vocs->voaodec_ccc = gatt_db_service_add_ccc(vocs->service,
+ BT_ATT_PERM_READ | BT_ATT_PERM_WRITE);
+
+ return vocs;
+}
+
static struct bt_vcp_db *vcp_db_new(struct gatt_db *db)
{
struct bt_vcp_db *vdb;
@@ -787,6 +1113,9 @@ static struct bt_vcp_db *vcp_db_new(struct gatt_db *db)
vdb->vcs = vcs_new(db);
vdb->vcs->vdb = vdb;
+ vdb->vocs = vocs_new(db);
+ vdb->vocs->vdb = vdb;
+
queue_push_tail(vcp_db, vdb);
return vdb;
@@ -911,6 +1240,46 @@ static void vcp_vstate_notify(struct bt_vcp *vcp, uint16_t value_handle,
DBG(vcp, "Vol Counter 0x%x", vstate.counter);
}
+static void vcp_voffset_state_notify(struct bt_vcp *vcp, uint16_t value_handle,
+ const uint8_t *value, uint16_t length,
+ void *user_data)
+{
+ struct vol_offset_state vostate;
+
+ memcpy(&vostate, value, sizeof(struct vol_offset_state));
+
+ DBG(vcp, "Vol Offset 0x%x", vostate.vol_offset);
+ DBG(vcp, "Vol Offset Counter 0x%x", vostate.counter);
+}
+
+static void vcp_audio_loc_notify(struct bt_vcp *vcp, uint16_t value_handle,
+ const uint8_t *value, uint16_t length,
+ void *user_data)
+{
+ uint32_t *vocs_audio_loc_n = malloc(sizeof(uint32_t));;
+
+ if (value != NULL)
+ memcpy(vocs_audio_loc_n, value, sizeof(uint32_t));
+
+ DBG(vcp, "VOCS Audio Location 0x%x", *vocs_audio_loc_n);
+
+ free(vocs_audio_loc_n);
+}
+
+
+static void vcp_audio_descriptor_notify(struct bt_vcp *vcp,
+ uint16_t value_handle,
+ const uint8_t *value,
+ uint16_t length,
+ void *user_data)
+{
+ char vocs_audio_dec_n[256] = {'\0'};
+
+ memcpy(vocs_audio_dec_n, value, length);
+
+ DBG(vcp, "VOCS Audio Descriptor 0x%s", *vocs_audio_dec_n);
+}
+
static void vcp_vflag_notify(struct bt_vcp *vcp, uint16_t value_handle,
const uint8_t *value, uint16_t length,
void *user_data)
@@ -972,6 +1341,86 @@ static void read_vol_state(struct bt_vcp *vcp, bool success, uint8_t att_ecode,
DBG(vcp, "Vol Counter:%x", vs->counter);
}
+static void read_vol_offset_state(struct bt_vcp *vcp, bool success,
+ uint8_t att_ecode,
+ const uint8_t *value, uint16_t length,
+ void *user_data)
+{
+ struct vol_offset_state *vos;
+ struct iovec iov = {
+ .iov_base = (void *) value,
+ .iov_len = length,
+ };
+
+ if (!success) {
+ DBG(vcp, "Unable to read Vol Offset State: error 0x%02x",
+ att_ecode);
+ return;
+ }
+
+ vos = iov_pull_mem(&iov, sizeof(*vos));
+ if (!vos) {
+ DBG(vcp, "Unable to get Vol Offset State");
+ return;
+ }
+
+ DBG(vcp, "Vol Set:%x", vos->vol_offset);
+ DBG(vcp, "Vol Counter:%x", vos->counter);
+}
+
+static void read_vocs_audio_location(struct bt_vcp *vcp, bool success,
+ uint8_t att_ecode,
+ const uint8_t *value, uint16_t length,
+ void *user_data)
+{
+ uint32_t *vocs_audio_loc;
+ struct iovec iov = {
+ .iov_base = (void *) value,
+ .iov_len = length,
+ };
+
+ if (!success) {
+ DBG(vcp, "Unable to read VOCS Audio Location: error 0x%02x",
+ att_ecode);
+ return;
+ }
+
+ vocs_audio_loc = iov_pull_mem(&iov, sizeof(uint32_t));
+ if (!*vocs_audio_loc) {
+ DBG(vcp, "Unable to get VOCS Audio Location");
+ return;
+ }
+
+ DBG(vcp, "VOCS Audio Loc:%x", *vocs_audio_loc);
+}
+
+
+static void read_vocs_audio_descriptor(struct bt_vcp *vcp, bool success,
+ uint8_t att_ecode,
+ const uint8_t *value, uint16_t length,
+ void *user_data)
+{
+ char *vocs_ao_dec_r;
+ struct iovec iov = {
+ .iov_base = (void *) value,
+ .iov_len = length,
+ };
+
+ if (!success) {
+ DBG(vcp, "Unable to read VOCS Audio Descriptor: error 0x%02x",
+ att_ecode);
+ return;
+ }
+
+ vocs_ao_dec_r = iov_pull_mem(&iov, length);
+ if (!*vocs_ao_dec_r) {
+ DBG(vcp, "Unable to get VOCS Audio Descriptor");
+ return;
+ }
+
+ DBG(vcp, "VOCS Audio Descriptor:%s", *vocs_ao_dec_r);
+}
+
static void vcp_pending_destroy(void *data)
{
struct bt_vcp_pending *pending = data;
@@ -1128,6 +1577,90 @@ static void foreach_vcs_char(struct gatt_db_attribute *attr, void *user_data)
}
}
+static void foreach_vocs_char(struct gatt_db_attribute *attr, void *user_data)
+{
+ struct bt_vcp *vcp = user_data;
+ uint16_t value_handle;
+ bt_uuid_t uuid, uuid_vostate, uuid_audio_loc, uuid_vo_cp,
+ uuid_audio_op_decs;
+ struct bt_vocs *vocs;
+
+ if (!gatt_db_attribute_get_char_data(attr, NULL, &value_handle,
+ NULL, NULL, &uuid))
+ return;
+
+ bt_uuid16_create(&uuid_vostate, VOCS_STATE_CHAR_UUID);
+ bt_uuid16_create(&uuid_audio_loc, VOCS_AUDIO_LOC_CHRC_UUID);
+ bt_uuid16_create(&uuid_vo_cp, VOCS_CP_CHRC_UUID);
+ bt_uuid16_create(&uuid_audio_op_decs, VOCS_AUDIO_OP_DESC_CHAR_UUID);
+
+ if (!bt_uuid_cmp(&uuid, &uuid_vostate)) {
+ DBG(vcp, "VOCS Vol state found: handle 0x%04x", value_handle);
+
+ vocs = vcp_get_vocs(vcp);
+ if (!vocs || vocs->vos)
+ return;
+
+ vocs->vos = attr;
+
+ vcp_read_value(vcp, value_handle, read_vol_offset_state, vcp);
+
+ vcp->state_id = vcp_register_notify(vcp, value_handle,
+ vcp_voffset_state_notify, NULL);
+
+ return;
+ }
+
+ if (!bt_uuid_cmp(&uuid, &uuid_audio_loc)) {
+ DBG(vcp, "VOCS Volume Audio Location found: handle 0x%04x",
+ value_handle);
+
+ vocs = vcp_get_vocs(vcp);
+ if (!vocs || vocs->voal)
+ return;
+
+ vocs->voal = attr;
+
+ vcp_read_value(vcp, value_handle, read_vocs_audio_location,
+ vcp);
+
+ vcp->audio_loc_id = vcp_register_notify(vcp, value_handle,
+ vcp_audio_loc_notify, NULL);
+
+ return;
+ }
+
+ if (!bt_uuid_cmp(&uuid, &uuid_vo_cp)) {
+ DBG(vcp, "VOCS Volume CP found: handle 0x%04x", value_handle);
+
+ vocs = vcp_get_vocs(vcp);
+ if (!vocs || vocs->vo_cp)
+ return;
+
+ vocs->vo_cp = attr;
+
+ return;
+ }
+
+ if (!bt_uuid_cmp(&uuid, &uuid_audio_op_decs)) {
+ DBG(vcp, "VOCS Vol Audio Descriptor found: handle 0x%04x",
+ value_handle);
+
+ vocs = vcp_get_vocs(vcp);
+ if (!vocs || vocs->voaodec)
+ return;
+
+ vocs->voaodec = attr;
+
+ vcp_read_value(vcp, value_handle, read_vocs_audio_descriptor,
+ vcp);
+ vcp->ao_dec_id = vcp_register_notify(vcp, value_handle,
+ vcp_audio_descriptor_notify, NULL);
+
+ }
+
+}
+
static void foreach_vcs_service(struct gatt_db_attribute *attr,
void *user_data)
{
@@ -1141,6 +1674,19 @@ static void foreach_vcs_service(struct gatt_db_attribute *attr,
gatt_db_service_foreach_char(attr, foreach_vcs_char, vcp);
}
+static void foreach_vocs_service(struct gatt_db_attribute *attr,
+ void *user_data)
+{
+ struct bt_vcp *vcp = user_data;
+ struct bt_vocs *vocs = vcp_get_vocs(vcp);
+
+ vocs->service = attr;
+
+ gatt_db_service_set_claimed(attr, true);
+
+ gatt_db_service_foreach_char(attr, foreach_vocs_char, vcp);
+}
+
bool bt_vcp_attach(struct bt_vcp *vcp, struct bt_gatt_client *client)
{
bt_uuid_t uuid;
@@ -1163,6 +1709,9 @@ bool bt_vcp_attach(struct bt_vcp *vcp, struct bt_gatt_client *client)
bt_uuid16_create(&uuid, VCS_UUID);
gatt_db_foreach_service(vcp->ldb->db, &uuid, foreach_vcs_service, vcp);
+ bt_uuid16_create(&uuid, VOL_OFFSET_CS_UUID);
+ gatt_db_foreach_service(vcp->ldb->db, &uuid, foreach_vocs_service, vcp);
+
return true;
}
--
2.34.1
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