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bluez5: basic codec-switching framework

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This commit is contained in:
Pauli Virtanen 2021-01-25 19:57:45 +02:00 • committed by Wim Taymans
parent 0908588d0c
commit e860f2bb4e
7 changed files with 537 additions and 14 deletions
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113
spa/plugins/bluez5/bluez5-device.c
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@ -92,8 +92,11 @@ struct impl {
struct props props;
struct spa_bt_device *bt_dev;
struct spa_hook bt_dev_listener;
uint32_t profile;
const struct a2dp_codec *selected_a2dp_codec; /**< Codec wanted. NULL means any. */
struct node nodes[2];
};
@ -138,16 +141,33 @@ static void emit_node(struct impl *this, struct spa_bt_transport *t,
t->n_channels * sizeof(uint32_t));
}
static struct spa_bt_transport *find_transport(struct impl *this, int profile)
static struct spa_bt_transport *find_transport(struct impl *this, int profile, const struct a2dp_codec *a2dp_codec)
{
struct spa_bt_device *device = this->bt_dev;
struct spa_bt_transport *t;
const struct a2dp_codec **codecs;
size_t i, num_codecs;
spa_list_for_each(t, &device->transport_list, device_link) {
if (t->profile & device->connected_profiles &&
(t->profile & profile) == t->profile)
return t;
codecs = &a2dp_codec;
num_codecs = 1;
if (a2dp_codec == NULL && (profile == SPA_BT_PROFILE_A2DP_SOURCE || profile == SPA_BT_PROFILE_A2DP_SINK)) {
codecs = a2dp_codecs;
num_codecs = 0;
while (codecs[num_codecs] != NULL)
++num_codecs;
}
for (i = 0; i < num_codecs; ++i) {
spa_list_for_each(t, &device->transport_list, device_link) {
if (t->enabled &&
(t->profile & device->connected_profiles) &&
(t->profile & profile) == t->profile &&
(codecs[i] == NULL || t->a2dp_codec == codecs[i]))
return t;
}
}
return NULL;
}
@ -160,13 +180,13 @@ static int emit_nodes(struct impl *this)
break;
case 1:
if (this->bt_dev->connected_profiles & SPA_BT_PROFILE_A2DP_SOURCE) {
t = find_transport(this, SPA_BT_PROFILE_A2DP_SOURCE);
t = find_transport(this, SPA_BT_PROFILE_A2DP_SOURCE, this->selected_a2dp_codec);
if (t)
emit_node(this, t, 0, SPA_NAME_API_BLUEZ5_A2DP_SOURCE);
}
if (this->bt_dev->connected_profiles & SPA_BT_PROFILE_A2DP_SINK) {
t = find_transport(this, SPA_BT_PROFILE_A2DP_SINK);
t = find_transport(this, SPA_BT_PROFILE_A2DP_SINK, this->selected_a2dp_codec);
if (t)
emit_node(this, t, 1, SPA_NAME_API_BLUEZ5_A2DP_SINK);
}
@ -177,7 +197,7 @@ static int emit_nodes(struct impl *this)
int i;
for (i = SPA_BT_PROFILE_HSP_HS ; i <= SPA_BT_PROFILE_HFP_AG ; i <<= 1) {
t = find_transport(this, i);
t = find_transport(this, i, NULL);
if (t)
break;
}
@ -211,21 +231,50 @@ static void emit_info(struct impl *this, bool full)
}
}
static int set_profile(struct impl *this, uint32_t profile)
static void emit_remove_nodes(struct impl *this)
{
uint32_t i;
if (this->profile == profile)
return 0;
for (i = 0; i < 2; i++) {
if (this->nodes[i].active) {
spa_device_emit_object_info(&this->hooks, i, NULL);
this->nodes[i].active = false;
}
}
this->profile = profile;
}
static int set_profile(struct impl *this, uint32_t profile, const struct a2dp_codec *a2dp_codec)
{
if (this->profile == profile && a2dp_codec == this->selected_a2dp_codec)
return 0;
emit_remove_nodes(this);
this->profile = profile;
this->selected_a2dp_codec = a2dp_codec;
if (profile == 1) {
int ret;
const struct a2dp_codec *codec_list[2], **codecs;
/* A2DP: ensure there's a transport with the selected codec (NULL means any) */
if (a2dp_codec == NULL) {
codecs = a2dp_codecs;
} else {
codec_list[0] = a2dp_codec;
codec_list[1] = NULL;
codecs = codec_list;
}
ret = spa_bt_device_ensure_a2dp_codec(this->bt_dev, codecs);
if (ret < 0)
spa_log_error(this->log, NAME": failed to switch codec (%d), setting basic profile", ret);
else
return 0;
}
this->switching_codec = false;
this->selected_a2dp_codec = NULL;
emit_nodes(this);
this->info.change_mask |= SPA_DEVICE_CHANGE_MASK_PARAMS;
@ -237,6 +286,37 @@ static int set_profile(struct impl *this, uint32_t profile)
return 0;
}
static void codec_switched(void *userdata, int status)
{
struct impl *this = userdata;
spa_log_debug(this->log, NAME": codec switched (status %d)", status);
if (status < 0) {
/* Failed to switch: return to a fallback profile */
spa_log_error(this->log, NAME": failed to switch codec (%d), setting fallback profile", status);
if (this->selected_a2dp_codec != NULL) {
this->selected_a2dp_codec = NULL;
} else {
this->profile = 0;
}
}
emit_remove_nodes(this);
emit_nodes(this);
this->info.change_mask |= SPA_DEVICE_CHANGE_MASK_PARAMS;
this->params[IDX_Profile].flags ^= SPA_PARAM_INFO_SERIAL;
this->params[IDX_Route].flags ^= SPA_PARAM_INFO_SERIAL;
this->params[IDX_EnumRoute].flags ^= SPA_PARAM_INFO_SERIAL;
emit_info(this, false);
}
static const struct spa_bt_device_events bt_dev_events = {
SPA_VERSION_BT_DEVICE_EVENTS,
.codec_switched = codec_switched,
};
static int impl_add_listener(void *object,
struct spa_hook *listener,
const struct spa_device_events *events,
@ -762,7 +842,7 @@ static int impl_set_param(void *object,
spa_debug_pod(0, NULL, param);
return res;
}
set_profile(this, id);
set_profile(this, id, NULL);
break;
}
case SPA_PARAM_Route:
@ -825,6 +905,9 @@ static int impl_get_interface(struct spa_handle *handle, const char *type, void
static int impl_clear(struct spa_handle *handle)
{
struct impl *this = (struct impl *) handle;
if (this->bt_dev)
spa_hook_remove(&this->bt_dev_listener);
return 0;
}
@ -885,6 +968,8 @@ impl_init(const struct spa_handle_factory *factory,
this->info.params = this->params;
this->info.n_params = 4;
spa_bt_device_add_listener(this->bt_dev, &this->bt_dev_listener, &bt_dev_events, this);
return 0;
}