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Bluetooth: audio: pacs: Refactor context related code

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This implifies and removes redundant code.

Signed-off-by: Mariusz Skamra <mariusz.skamra@codecoup.pl>
This commit is contained in:
Mariusz Skamra 2022-10-18 22:58:34 +02:00 • committed by Carles Cufí
commit 49f9119c99
1 changed files with 93 additions and 164 deletions
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253
subsys/bluetooth/audio/pacs.c
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@ -36,8 +36,21 @@
static sys_slist_t snks;
static sys_slist_t srcs;
IF_ENABLED(CONFIG_BT_PAC_SNK, (static enum bt_audio_context sink_available_contexts;))
IF_ENABLED(CONFIG_BT_PAC_SRC, (static enum bt_audio_context source_available_contexts;));
#if defined(CONFIG_BT_PAC_SNK)
static uint16_t snk_available_contexts;
static const uint16_t snk_supported_contexts = CONFIG_BT_PACS_SNK_CONTEXT;
#else
static const uint16_t snk_available_contexts = BT_AUDIO_CONTEXT_TYPE_PROHIBITED;
static const uint16_t snk_supported_contexts = BT_AUDIO_CONTEXT_TYPE_PROHIBITED;
#endif /* CONFIG_BT_PAC_SNK */
#if defined(CONFIG_BT_PAC_SRC)
static uint16_t src_available_contexts;
static const uint16_t src_supported_contexts = CONFIG_BT_PACS_SRC_CONTEXT;
#else
static const uint16_t src_available_contexts = BT_AUDIO_CONTEXT_TYPE_PROHIBITED;
static const uint16_t src_supported_contexts = BT_AUDIO_CONTEXT_TYPE_PROHIBITED;
#endif /* CONFIG_BT_PAC_SRC */
NET_BUF_SIMPLE_DEFINE_STATIC(read_buf, CONFIG_BT_L2CAP_TX_MTU);
@ -150,75 +163,19 @@ static void available_context_cfg_changed(const struct bt_gatt_attr *attr, uint1
BT_DBG("attr %p value 0x%04x", attr, value);
}
static int get_available_contexts(enum bt_audio_dir dir,
enum bt_audio_context *contexts)
{
IF_ENABLED(CONFIG_BT_PAC_SNK, (
if (dir == BT_AUDIO_DIR_SINK) {
*contexts = sink_available_contexts;
return 0;
}
));
IF_ENABLED(CONFIG_BT_PAC_SRC, (
if (dir == BT_AUDIO_DIR_SOURCE) {
*contexts = source_available_contexts;
return 0;
}
));
BT_ASSERT_PRINT_MSG("Invalid endpoint dir: %u", dir);
return -EINVAL;
}
static int available_contexts_get(struct bt_conn *conn, struct bt_pacs_context *context)
{
enum bt_audio_context context_snk, context_src;
int err;
if (IS_ENABLED(CONFIG_BT_PAC_SNK)) {
err = get_available_contexts(BT_AUDIO_DIR_SINK, &context_snk);
if (err) {
return err;
}
} else {
/* Server is not available to receive audio for any Context */
context_snk = BT_AUDIO_CONTEXT_TYPE_PROHIBITED;
}
if (IS_ENABLED(CONFIG_BT_PAC_SRC)) {
err = get_available_contexts(BT_AUDIO_DIR_SOURCE, &context_src);
if (err) {
return err;
}
} else {
/* Server is not available to send audio for any Context */
context_src = BT_AUDIO_CONTEXT_TYPE_PROHIBITED;
}
context->snk = sys_cpu_to_le16((uint16_t)context_snk);
context->src = sys_cpu_to_le16((uint16_t)context_src);
return 0;
}
static ssize_t available_contexts_read(struct bt_conn *conn,
const struct bt_gatt_attr *attr, void *buf,
uint16_t len, uint16_t offset)
{
struct bt_pacs_context context;
int err;
struct bt_pacs_context context = {
.snk = sys_cpu_to_le16(snk_available_contexts),
.src = sys_cpu_to_le16(src_available_contexts),
};
BT_DBG("conn %p attr %p buf %p len %u offset %u", conn, attr, buf, len,
offset);
err = available_contexts_get(NULL, &context);
if (err) {
BT_DBG("get_available_contexts returned %d", err);
return BT_GATT_ERR(BT_ATT_ERR_UNLIKELY);
}
return bt_gatt_attr_read(conn, attr, buf, len, offset, &context,
sizeof(context));
}
@ -233,19 +190,10 @@ static ssize_t supported_context_read(struct bt_conn *conn,
const struct bt_gatt_attr *attr,
void *buf, uint16_t len, uint16_t offset)
{
struct bt_pacs_context context;
#if defined(CONFIG_BT_PAC_SNK)
context.snk = sys_cpu_to_le16(CONFIG_BT_PACS_SNK_CONTEXT);
#else
context.snk = BT_AUDIO_CONTEXT_TYPE_PROHIBITED;
#endif
#if defined(CONFIG_BT_PAC_SRC)
context.src = sys_cpu_to_le16(CONFIG_BT_PACS_SRC_CONTEXT);
#else
context.src = BT_AUDIO_CONTEXT_TYPE_PROHIBITED;
#endif
struct bt_pacs_context context = {
.snk = sys_cpu_to_le16(snk_supported_contexts),
.src = sys_cpu_to_le16(src_supported_contexts),
};
BT_DBG("conn %p attr %p buf %p len %u offset %u", conn, attr, buf, len,
offset);
@ -254,6 +202,32 @@ static ssize_t supported_context_read(struct bt_conn *conn,
sizeof(context));
}
static void available_contexts_notify(struct k_work *work);
static K_WORK_DELAYABLE_DEFINE(available_contexts_work, available_contexts_notify);
static int set_available_contexts(uint16_t contexts, uint16_t *available,
const uint16_t supported)
{
int err;
if (contexts & ~supported) {
return -ENOTSUP;
}
if (contexts == *available) {
return 0;
}
*available = contexts;
err = k_work_reschedule(&available_contexts_work, PAC_NOTIFY_TIMEOUT);
if (err < 0) {
return err;
}
return 0;
}
#if defined(CONFIG_BT_PAC_SNK_LOC) || defined(CONFIG_BT_PAC_SRC_LOC)
static void pac_notify_loc(struct k_work *work);
@ -324,6 +298,17 @@ static void snk_cfg_changed(const struct bt_gatt_attr *attr, uint16_t value)
BT_DBG("attr %p value 0x%04x", attr, value);
}
static inline int set_snk_available_contexts(uint16_t contexts)
{
return set_available_contexts(contexts, &snk_available_contexts,
snk_supported_contexts);
}
#else
static inline int set_snk_available_contexts(uint16_t contexts)
{
return -ENOTSUP;
}
#if defined(CONFIG_BT_PAC_SNK_LOC)
static K_WORK_DELAYABLE_DEFINE(snks_loc_work, pac_notify_loc);
@ -427,6 +412,17 @@ static void src_cfg_changed(const struct bt_gatt_attr *attr, uint16_t value)
BT_DBG("attr %p value 0x%04x", attr, value);
}
static inline int set_src_available_contexts(uint16_t contexts)
{
return set_available_contexts(contexts, &src_available_contexts,
src_supported_contexts);
}
#else
static inline int set_src_available_contexts(uint16_t contexts)
{
return -ENOTSUP;
}
#if defined(CONFIG_BT_PAC_SRC_LOC)
static K_WORK_DELAYABLE_DEFINE(srcs_loc_work, pac_notify_loc);
@ -692,15 +688,12 @@ static int bt_audio_pacs_location_changed(enum bt_audio_dir dir)
static void available_contexts_notify(struct k_work *work)
{
struct bt_pacs_context context;
struct bt_pacs_context context = {
.snk = sys_cpu_to_le16(snk_available_contexts),
.src = sys_cpu_to_le16(src_available_contexts),
};
int err;
err = available_contexts_get(NULL, &context);
if (err) {
BT_DBG("get_available_contexts returned %d, won't notify", err);
return;
}
err = bt_gatt_notify_uuid(NULL, BT_UUID_PACS_AVAILABLE_CONTEXT, pacs_svc.attrs,
&context, sizeof(context));
if (err != 0 && err != -ENOTCONN) {
@ -708,35 +701,14 @@ static void available_contexts_notify(struct k_work *work)
}
}
static K_WORK_DELAYABLE_DEFINE(available_contexts_work, available_contexts_notify);
static int bt_pacs_available_contexts_changed(void)
{
int err;
err = k_work_reschedule(&available_contexts_work, PAC_NOTIFY_TIMEOUT);
if (err < 0) {
return err;
}
return 0;
}
bool bt_pacs_context_available(enum bt_audio_dir dir, uint16_t context)
{
struct bt_pacs_context available_context;
int err;
err = available_contexts_get(NULL, &available_context);
if (err) {
BT_DBG("get_available_contexts returned %d", err);
return false;
if (dir == BT_AUDIO_DIR_SOURCE) {
return (context & src_available_contexts) == context;
}
if (IS_ENABLED(CONFIG_BT_PAC_SRC) && dir == BT_AUDIO_DIR_SOURCE) {
return (context & available_context.src) == context;
} else if (IS_ENABLED(CONFIG_BT_PAC_SNK) && dir == BT_AUDIO_DIR_SINK) {
return (context & available_context.snk) == context;
if (dir == BT_AUDIO_DIR_SINK) {
return (context & snk_available_contexts) == context;
}
return false;
@ -867,70 +839,27 @@ int bt_audio_capability_set_location(enum bt_audio_dir dir,
}
#endif /* CONFIG_BT_PAC_SNK_LOC || CONFIG_BT_PAC_SRC_LOC */
static int set_available_contexts(enum bt_audio_dir dir,
int bt_audio_capability_set_available_contexts(enum bt_audio_dir dir,
enum bt_audio_context contexts)
{
IF_ENABLED(CONFIG_BT_PAC_SNK, (
if (dir == BT_AUDIO_DIR_SINK) {
const enum bt_audio_context supported = CONFIG_BT_PACS_SNK_CONTEXT;
if (contexts & ~supported) {
return -ENOTSUP;
switch (dir) {
case BT_AUDIO_DIR_SINK:
return set_snk_available_contexts(contexts);
case BT_AUDIO_DIR_SOURCE:
return set_src_available_contexts(contexts);
}
sink_available_contexts = contexts;
return 0;
}
));
IF_ENABLED(CONFIG_BT_PAC_SRC, (
if (dir == BT_AUDIO_DIR_SOURCE) {
const enum bt_audio_context supported = CONFIG_BT_PACS_SRC_CONTEXT;
if (contexts & ~supported) {
return -ENOTSUP;
}
source_available_contexts = contexts;
return 0;
}
));
BT_ERR("Invalid endpoint dir: %u", dir);
return -EINVAL;
}
int bt_audio_capability_set_available_contexts(enum bt_audio_dir dir,
enum bt_audio_context contexts)
{
int err;
err = set_available_contexts(dir, contexts);
if (err) {
return err;
}
if (IS_ENABLED(CONFIG_BT_PACS)) {
err = bt_pacs_available_contexts_changed();
if (err) {
BT_DBG("Available contexts weren't notified: %d", err);
return err;
}
}
return 0;
}
enum bt_audio_context bt_audio_capability_get_available_contexts(enum bt_audio_dir dir)
{
enum bt_audio_context contexts;
int err;
switch (dir) {
case BT_AUDIO_DIR_SINK:
return snk_available_contexts;
case BT_AUDIO_DIR_SOURCE:
return src_available_contexts;
}
err = get_available_contexts(dir, &contexts);
if (err < 0) {
return BT_AUDIO_CONTEXT_TYPE_PROHIBITED;
}
return contexts;
}