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bluetooth: Add support for getting list of negotiated codecs

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For example, using the following on the command line will return the
list of possible codecs for a bluetooth device

pacmd send-message /card/bluez_card.4C_BC_98_80_01_9B/bluez list-codecs

where 4C_BC_98_80_01_9B is the bluetooth device.

Part-of: <https://gitlab.freedesktop.org/pulseaudio/pulseaudio/-/merge_requests/440>
This commit is contained in:
Sanchayan Maity 2020-12-23 21:03:48 +03:00
parent 3377964889
commit 2fea838e50
1 changed files with 45 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

46
src/modules/bluetooth/module-bluez5-device.c
View file

@ -2270,6 +2270,46 @@ off:
pa_assert_se(pa_card_set_profile(u->card, pa_hashmap_get(u->card->profiles, "off"), false) >= 0); pa_assert_se(pa_card_set_profile(u->card, pa_hashmap_get(u->card->profiles, "off"), false) >= 0);
} }
static char *list_codecs(struct userdata *u) {
const pa_a2dp_codec_capabilities *a2dp_capabilities;
const pa_a2dp_codec_id *key;
pa_hashmap *a2dp_endpoints;
pa_message_params *param;
unsigned int i;
bool is_a2dp_sink;
void *state;
is_a2dp_sink = u->profile == PA_BLUETOOTH_PROFILE_A2DP_SINK;
a2dp_endpoints = is_a2dp_sink ? u->device->a2dp_sink_endpoints : u->device->a2dp_source_endpoints;
param = pa_message_params_new();
pa_message_params_begin_list(param);
PA_HASHMAP_FOREACH_KV(key, a2dp_capabilities, a2dp_endpoints, state) {
for (i = 0; i < pa_bluetooth_a2dp_codec_count(); i++) {
const pa_a2dp_codec *a2dp_codec;
a2dp_codec = pa_bluetooth_a2dp_codec_iter(i);
if (key->codec_id == a2dp_codec->id.codec_id && key->vendor_id == a2dp_codec->id.vendor_id
&& key->vendor_codec_id == a2dp_codec->id.vendor_codec_id) {
pa_message_params_begin_list(param);
pa_message_params_write_string(param, a2dp_codec->name);
pa_message_params_write_string(param, a2dp_codec->description);
pa_message_params_end_list(param);
}
}
}
pa_message_params_end_list(param);
return pa_message_params_to_string_free(param);
}
static int bluez5_device_message_handler(const char *object_path, const char *message, char *message_parameters, char **response, void *userdata) { static int bluez5_device_message_handler(const char *object_path, const char *message, char *message_parameters, char **response, void *userdata) {
char *message_handler_path; char *message_handler_path;
pa_hashmap *capabilities_hashmap; pa_hashmap *capabilities_hashmap;
@ -2309,7 +2349,7 @@ static int bluez5_device_message_handler(const char *object_path, const char *me
return -PA_ERR_INVALID; return -PA_ERR_INVALID;
} else if (u->profile != PA_BLUETOOTH_PROFILE_A2DP_SINK && } else if (u->profile != PA_BLUETOOTH_PROFILE_A2DP_SINK &&
u->profile != PA_BLUETOOTH_PROFILE_A2DP_SOURCE) { u->profile != PA_BLUETOOTH_PROFILE_A2DP_SOURCE) {
pa_log_info("Codec switching only allowed for A2DP sink or source"); pa_log_info("Listing or switching codecs only allowed for A2DP sink or source");
return -PA_ERR_INVALID; return -PA_ERR_INVALID;
} }
@ -2365,8 +2405,12 @@ static int bluez5_device_message_handler(const char *object_path, const char *me
goto profile_off; goto profile_off;
return PA_OK; return PA_OK;
} else if (pa_streq(message, "list-codecs")) {
*response = list_codecs(u);
return PA_OK;
} }
return -PA_ERR_NOTIMPLEMENTED; return -PA_ERR_NOTIMPLEMENTED;
profile_off: profile_off: