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#include <QtCore/QDebug>
#include <dbus/dbus-glib-lowlevel.h>
#include "qmafwwatchletvolumecontrol.h"
#define DEFAULT_ADDRESS "unix:path=/var/run/pulse/dbus-socket"
#define VOLUME_SV "com.Nokia.MainVolume1"
#define VOLUME_PATH "/com/meego/mainvolume1"
#define VOLUME_IF "com.Nokia.MainVolume1"
using namespace sowatch;
QMafwWatchletVolumeControl::QMafwWatchletVolumeControl(QObject *parent) :
QObject(parent), _conn(0), _curStep(0), _maxStep(1)
{
_openConnection();
}
QMafwWatchletVolumeControl::~QMafwWatchletVolumeControl()
{
if (_conn) {
dbus_connection_remove_filter(_conn, handleDBusSignal, this);
dbus_connection_unref(_conn);
}
}
int QMafwWatchletVolumeControl::volume() const
{
return _curStep;
}
int QMafwWatchletVolumeControl::max() const
{
return _maxStep - 1;
}
int QMafwWatchletVolumeControl::min() const
{
return 0;
}
void QMafwWatchletVolumeControl::setVolume(int vol)
{
if (!_conn) return;
DBusMessage *msg;
quint32 value = vol;
const char *volume_if = VOLUME_IF;
const char *prop = "CurrentStep";
msg = dbus_message_new_method_call(VOLUME_SV, VOLUME_PATH,
"org.freedesktop.DBus.Properties", "Set");
Q_ASSERT(msg);
dbus_message_append_args(msg,
DBUS_TYPE_STRING, &volume_if,
DBUS_TYPE_STRING, &prop,
DBUS_TYPE_INVALID);
DBusMessageIter iter, iter_variant;
dbus_message_iter_init_append(msg, &iter);
dbus_message_iter_open_container(&iter,
DBUS_TYPE_VARIANT,
DBUS_TYPE_UINT32_AS_STRING,
&iter_variant);
dbus_message_iter_append_basic(&iter_variant, DBUS_TYPE_UINT32, &value);
dbus_message_iter_close_container(&iter, &iter_variant);
dbus_connection_send(_conn, msg, 0);
dbus_message_unref(msg);
}
void QMafwWatchletVolumeControl::up()
{
if (_curStep < _maxStep - 1) {
setVolume(_curStep + 1);
}
}
void QMafwWatchletVolumeControl::down()
{
if (_curStep > 0) {
setVolume(_curStep - 1);
}
}
void QMafwWatchletVolumeControl::_openConnection()
{
DBusError err;
// Allow for an alternative PulseAudio D-Bus server address
char *pa_bus_address = getenv("PULSE_DBUS_SERVER");
if (!pa_bus_address)
pa_bus_address = (char *) DEFAULT_ADDRESS;
dbus_error_init(&err);
_conn = dbus_connection_open(pa_bus_address, &err);
if (!_conn) {
qWarning() << "Failed to open connection to PulseAudio D-Bus server:"
<< err.message;
return;
}
dbus_connection_setup_with_g_main(_conn, NULL);
dbus_connection_add_filter(_conn, handleDBusSignal, this, 0);
_listenForSignal();
_fetchValues();
}
void QMafwWatchletVolumeControl::_listenForSignal()
{
DBusMessage *msg;
const char *signal = "com.Nokia.MainVolume1.StepsUpdated";
char **empty_array = { 0 };
msg = dbus_message_new_method_call(NULL, "/org/pulseaudio/core1", NULL,
"ListenForSignal");
if (!msg) {
qWarning() << "Cannot create ListenForSignal message";
return;
}
dbus_message_append_args(msg,
DBUS_TYPE_STRING, &signal,
DBUS_TYPE_ARRAY, DBUS_TYPE_OBJECT_PATH, &empty_array, 0,
DBUS_TYPE_INVALID);
dbus_connection_send(_conn, msg, 0);
dbus_message_unref(msg);
}
void QMafwWatchletVolumeControl::_fetchValues()
{
DBusMessage *msg, *reply;
DBusError err;
dbus_error_init(&err);
msg = dbus_message_new_method_call(VOLUME_SV, VOLUME_PATH,
"org.freedesktop.DBus.Properties",
"GetAll");
if (!msg) {
qWarning() << "Cannot create GetAll message";
return;
}
const char *volume_if = VOLUME_IF;
dbus_message_append_args(msg,
DBUS_TYPE_STRING, &volume_if,
DBUS_TYPE_INVALID);
DBusPendingCall *pending;
if (!dbus_connection_send_with_reply(_conn, msg, &pending, -1)) {
qWarning() << "Cannot send GetAll message";
return;
}
dbus_message_unref(msg);
if (pending) {
if (!dbus_pending_call_set_notify(pending, handleFetchReply, this, 0)) {
qWarning() << "Cannot set GetAll notify";
return;
}
}
}
void QMafwWatchletVolumeControl::handleFetchReply(DBusPendingCall *pending, void *user_data)
{
QMafwWatchletVolumeControl *self = static_cast<QMafwWatchletVolumeControl*>(user_data);
DBusMessage *reply = dbus_pending_call_steal_reply(pending);
if (!reply || dbus_message_get_type(reply) != DBUS_MESSAGE_TYPE_METHOD_RETURN) {
qWarning() << "Received something that is not a method return";
}
DBusMessageIter iter;
dbus_message_iter_init(reply, &iter);
while (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_INVALID) {
DBusMessageIter iter_dict;
Q_ASSERT(dbus_message_iter_get_arg_type(&iter) == DBUS_TYPE_ARRAY);
dbus_message_iter_recurse(&iter, &iter_dict);
while (dbus_message_iter_get_arg_type(&iter_dict) != DBUS_TYPE_INVALID) {
DBusMessageIter iter_entry;
Q_ASSERT(dbus_message_iter_get_arg_type(&iter) == DBUS_TYPE_ARRAY);
dbus_message_iter_recurse(&iter_dict, &iter_entry);
char *prop_name;
Q_ASSERT(dbus_message_iter_get_arg_type(&iter_entry) == DBUS_TYPE_STRING);
dbus_message_iter_get_basic(&iter_entry, &prop_name);
dbus_message_iter_next(&iter_entry);
Q_ASSERT(dbus_message_iter_get_arg_type(&iter_entry) == DBUS_TYPE_VARIANT);
DBusMessageIter iter_variant;
dbus_message_iter_recurse(&iter_entry, &iter_variant);
if (prop_name &&
dbus_message_iter_get_arg_type(&iter_variant) == DBUS_TYPE_UINT32) {
quint32 value;
dbus_message_iter_get_basic(&iter_variant, &value);
if (strcmp(prop_name, "StepCount")) {
self->_maxStep = value;
} else if (strcmp(prop_name, "CurrentStep")) {
self->_curStep = value;
}
qDebug() << prop_name << value;
}
dbus_message_iter_next(&iter_dict);
}
dbus_message_iter_next(&iter);
}
emit self->maxChanged();
emit self->volumeChanged();
dbus_message_unref(reply);
dbus_pending_call_unref(pending);
}
DBusHandlerResult QMafwWatchletVolumeControl::handleDBusSignal(DBusConnection *connection, DBusMessage *message, void *user_data)
{
QMafwWatchletVolumeControl *self = static_cast<QMafwWatchletVolumeControl*>(user_data);
if (dbus_message_is_signal(message, VOLUME_IF, "StepsUpdated")) {
DBusError err;
quint32 curStep, maxStep;
dbus_error_init(&err);
if (dbus_message_get_args(message, &err,
DBUS_TYPE_UINT32, &maxStep,
DBUS_TYPE_UINT32, &curStep,
DBUS_TYPE_INVALID)) {
if (self->_maxStep != maxStep) {
self->_maxStep = maxStep;
emit self->maxChanged();
}
if (self->_curStep != curStep) {
self->_curStep = curStep;
emit self->volumeChanged();
}
}
}
}
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