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/***
This file is part of PulseAudio.
Copyright 2008-2013 João Paulo Rechi Vita
PulseAudio is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
PulseAudio is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <pulsecore/core.h>
#include <pulsecore/core-util.h>
#include <pulsecore/macro.h>
#include <pulsecore/module.h>
#include <pulsecore/modargs.h>
#include <pulsecore/shared.h>
#include "bluez5-util.h"
PA_MODULE_AUTHOR("João Paulo Rechi Vita");
PA_MODULE_DESCRIPTION("Detect available BlueZ 5 Bluetooth audio devices and load BlueZ 5 Bluetooth audio drivers");
PA_MODULE_VERSION(PACKAGE_VERSION);
PA_MODULE_LOAD_ONCE(true);
PA_MODULE_USAGE(
"headset=ofono|native|auto"
"autodetect_mtu=<boolean>"
"output_rate_refresh_interval_ms=<interval between attempts to improve output rate in milliseconds>"
);
static const char* const valid_modargs[] = {
"headset",
"autodetect_mtu",
"output_rate_refresh_interval_ms",
NULL
};
struct userdata {
pa_module *module;
pa_core *core;
pa_hashmap *loaded_device_paths;
pa_hook_slot *device_connection_changed_slot;
pa_bluetooth_discovery *discovery;
bool autodetect_mtu;
uint32_t output_rate_refresh_interval_ms;
};
static pa_hook_result_t device_connection_changed_cb(pa_bluetooth_discovery *y, const pa_bluetooth_device *d, struct userdata *u) {
bool module_loaded;
pa_assert(d);
pa_assert(u);
module_loaded = pa_hashmap_get(u->loaded_device_paths, d->path) ? true : false;
/* When changing A2DP codec there is no transport connected, ensure that no module is unloaded */
if (module_loaded && !pa_bluetooth_device_any_transport_connected(d) &&
!d->codec_switching_in_progress) {
/* disconnection, the module unloads itself */
pa_log_debug("Unregistering module for %s", d->path);
pa_hashmap_remove(u->loaded_device_paths, d->path);
return PA_HOOK_OK;
}
if (!module_loaded && pa_bluetooth_device_any_transport_connected(d)) {
/* a new device has been connected */
pa_module *m;
char *args = pa_sprintf_malloc("path=%s autodetect_mtu=%i output_rate_refresh_interval_ms=%u",
d->path, (int)u->autodetect_mtu, u->output_rate_refresh_interval_ms);
pa_log_debug("Loading module-bluez5-device %s", args);
pa_module_load(&m, u->module->core, "module-bluez5-device", args);
pa_xfree(args);
if (m)
/* No need to duplicate the path here since the device object will
* exist for the whole hashmap entry lifespan */
pa_hashmap_put(u->loaded_device_paths, d->path, d->path);
else
pa_log_warn("Failed to load module for device %s", d->path);
return PA_HOOK_OK;
}
return PA_HOOK_OK;
}
#ifdef HAVE_BLUEZ_5_NATIVE_HEADSET
const char *default_headset_backend = "native";
#else
const char *default_headset_backend = "ofono";
#endif
int pa__init(pa_module *m) {
struct userdata *u;
pa_modargs *ma;
const char *headset_str;
int headset_backend;
bool autodetect_mtu;
uint32_t output_rate_refresh_interval_ms;
bool enable_native_hfp_hf = true;
pa_assert(m);
if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
pa_log("failed to parse module arguments.");
goto fail;
}
pa_assert_se(headset_str = pa_modargs_get_value(ma, "headset", default_headset_backend));
if (pa_streq(headset_str, "ofono"))
headset_backend = HEADSET_BACKEND_OFONO;
else if (pa_streq(headset_str, "native"))
headset_backend = HEADSET_BACKEND_NATIVE;
else if (pa_streq(headset_str, "auto"))
headset_backend = HEADSET_BACKEND_AUTO;
else {
pa_log("headset parameter must be either ofono, native or auto (found %s)", headset_str);
goto fail;
}
/* default value if no module parameter */
enable_native_hfp_hf = (headset_backend == HEADSET_BACKEND_NATIVE);
autodetect_mtu = false;
if (pa_modargs_get_value_boolean(ma, "autodetect_mtu", &autodetect_mtu) < 0) {
pa_log("Invalid boolean value for autodetect_mtu parameter");
}
if (pa_modargs_get_value_boolean(ma, "enable_native_hfp_hf", &enable_native_hfp_hf) < 0) {
pa_log("enable_native_hfp_hf must be true or false");
goto fail;
}
output_rate_refresh_interval_ms = DEFAULT_OUTPUT_RATE_REFRESH_INTERVAL_MS;
if (pa_modargs_get_value_u32(ma, "output_rate_refresh_interval_ms", &output_rate_refresh_interval_ms) < 0) {
pa_log("Invalid value for output_rate_refresh_interval parameter.");
goto fail;
}
m->userdata = u = pa_xnew0(struct userdata, 1);
u->module = m;
u->core = m->core;
u->autodetect_mtu = autodetect_mtu;
u->output_rate_refresh_interval_ms = output_rate_refresh_interval_ms;
u->loaded_device_paths = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
if (!(u->discovery = pa_bluetooth_discovery_get(u->core, headset_backend, enable_native_hfp_hf)))
goto fail;
u->device_connection_changed_slot =
pa_hook_connect(pa_bluetooth_discovery_hook(u->discovery, PA_BLUETOOTH_HOOK_DEVICE_CONNECTION_CHANGED),
PA_HOOK_NORMAL, (pa_hook_cb_t) device_connection_changed_cb, u);
pa_modargs_free(ma);
return 0;
fail:
if (ma)
pa_modargs_free(ma);
pa__done(m);
return -1;
}
void pa__done(pa_module *m) {
struct userdata *u;
pa_assert(m);
if (!(u = m->userdata))
return;
if (u->device_connection_changed_slot)
pa_hook_slot_free(u->device_connection_changed_slot);
if (u->loaded_device_paths)
pa_hashmap_free(u->loaded_device_paths);
if (u->discovery)
pa_bluetooth_discovery_unref(u->discovery);
pa_xfree(u);
}
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