/*
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* BlueALSA - bluealsa.h
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* Copyright (c) 2016-2018 Arkadiusz Bokowy
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*
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* This file is a part of bluez-alsa.
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*
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* This project is licensed under the terms of the MIT license.
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*
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*/
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#ifndef BLUEALSA_BLUEALSA_H
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#define BLUEALSA_BLUEALSA_H
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#if HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <poll.h>
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#include <pthread.h>
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#include <stdbool.h>
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#include <bluetooth/bluetooth.h>
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#include <bluetooth/hci.h>
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#include <glib.h>
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#include <gio/gio.h>
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#include "bluez.h"
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#include "bluez-a2dp.h"
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#include "shared/ctl-proto.h"
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/* Maximal number of clients connected to the controller. */
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#define BLUEALSA_MAX_CLIENTS 7
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/* Indexes of special file descriptors in the poll array. */
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#define CTL_IDX_SRV 0
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#define CTL_IDX_EVT 1
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#define __CTL_IDX_MAX 2
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struct ba_config {
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/* used HCI device */
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struct hci_dev_info hci_dev;
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/* set of enabled profiles */
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struct {
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bool a2dp_source;
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bool a2dp_sink;
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bool hsp_hs;
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bool hsp_ag;
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bool hfp_hf;
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bool hfp_ag;
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} enable;
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/* established D-Bus connection */
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GDBusConnection *dbus;
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/* used for main thread identification */
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pthread_t main_thread;
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/* collection of connected devices */
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pthread_mutex_t devices_mutex;
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GHashTable *devices;
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/* registered D-Bus objects */
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GHashTable *dbus_objects;
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/* audio group ID */
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gid_t gid_audio;
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struct {
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pthread_t thread;
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bool socket_created;
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bool thread_created;
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struct pollfd pfds[__CTL_IDX_MAX + BLUEALSA_MAX_CLIENTS];
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/* event subscriptions for connected clients */
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enum ba_event subs[BLUEALSA_MAX_CLIENTS];
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/* PIPE for transferring events */
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int evt[2];
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} ctl;
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struct {
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/* set of features exposed via Service Discovery */
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int features_sdp_hf;
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int features_sdp_ag;
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/* set of features exposed via RFCOMM connection */
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int features_rfcomm_hf;
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int features_rfcomm_ag;
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} hfp;
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struct {
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/* NULL-terminated list of available A2DP codecs */
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const struct bluez_a2dp_codec **codecs;
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/* Control audio volume natively by the connected device. The disadvantage
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* of this control type is a monophonic volume change. */
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bool volume;
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/* Support for monophonic sound in the A2DP profile is mandatory for
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* sink and semi-mandatory for source. So, if one wants only the bare
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* minimum, it would be possible - e.g. due to bandwidth limitations. */
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bool force_mono;
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/* The sampling rates of 44.1 kHz (aka Audio CD) and 48 kHz are mandatory
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* for sink endpoint and semi-mandatory for source. It is then possible
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* to force lower sampling in order to save Bluetooth bandwidth. */
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bool force_44100;
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/* The number of seconds for keeping A2DP transport alive after PCM has
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* been closed. One might set this value to negative number for infinite
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* time. This option applies for the source profile only. */
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int keep_alive;
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} a2dp;
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#if ENABLE_AAC
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bool aac_afterburner;
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uint8_t aac_vbr_mode;
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#endif
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#if ENABLE_LDAC
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bool ldac_abr;
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uint8_t ldac_eqmid;
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#endif
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};
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/* Structure describing registered D-Bus object. */
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struct ba_dbus_object {
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/* D-Bus object registration ID */
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unsigned int id;
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enum bluetooth_profile profile;
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uint16_t codec;
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/* determine whether profile is used */
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bool connected;
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};
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/* Global BlueALSA configuration. */
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extern struct ba_config config;
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int bluealsa_config_init(void);
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void bluealsa_config_free(void);
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#endif
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