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/*
* Copyright (C) 2016,2017 Konsulko Group
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "paclient.h"
#include <QtCore/QDebug>
PaClient::PaClient()
: m_init(false), m_ml(nullptr), m_mlapi(nullptr), m_ctx(nullptr)
{
}
PaClient::~PaClient()
{
if (m_init)
close();
}
void PaClient::close()
{
if (!m_init) return;
pa_threaded_mainloop_stop(m_ml);
pa_threaded_mainloop_free(m_ml);
m_init = false;
}
static void set_sink_volume_cb(pa_context *c, int success, void *data)
{
Q_UNUSED(data);
if (!success)
qWarning() << "PaClient: set sink volume: " <<
pa_strerror(pa_context_errno(c));
}
void PaClient::incDecVolume(const int volume_delta)
{
pa_operation *o;
pa_context *c = context();
pa_sink_info *i = getDefaultSinkInfo();
if (volume_delta > 0)
pa_cvolume_inc_clamp(&i->volume, volume_delta, 65536);
else
pa_cvolume_dec(&i->volume, abs(volume_delta));
o = pa_context_set_sink_volume_by_index(c, i->index, &i->volume, set_sink_volume_cb, NULL);
if (!o) {
qWarning() << "PaClient: set sink #" << i->index <<
" volume: " << pa_strerror(pa_context_errno(c));
return;
}
pa_operation_unref(o);
}
void get_sink_info_change_cb(pa_context *c,
const pa_sink_info *i,
int eol,
void *data)
{
Q_UNUSED(c);
Q_ASSERT(i);
Q_ASSERT(data);
if (eol) return;
PaClient *self = reinterpret_cast<PaClient*>(data);
pa_sink_info *si = self->getDefaultSinkInfo();
if (i->index == si->index) {
self->setDefaultSinkInfo(i);
pa_cvolume *cvolume = &self->getDefaultSinkInfo()->volume;
emit self->volumeExternallyChanged(pa_cvolume_avg(cvolume));
}
}
void get_default_sink_info_cb(pa_context *c,
const pa_sink_info *i,
int eol,
void *data)
{
Q_UNUSED(c);
Q_ASSERT(i);
Q_ASSERT(data);
if (eol) return;
PaClient *self = reinterpret_cast<PaClient*>(data);
self->setDefaultSinkInfo(i);
}
pa_sink_info *PaClient::getDefaultSinkInfo(void)
{
return &m_default_sink_info;
}
void PaClient::setDefaultSinkInfo(const pa_sink_info *i)
{
m_default_sink_info.index = i->index;
m_default_sink_info.channel_map.channels = i->channel_map.channels;
pa_cvolume *cvolume = &m_default_sink_info.volume;
cvolume->channels = i->volume.channels;
for (int chan = 0; chan < i->channel_map.channels; chan++) {
cvolume->values[chan] = i->volume.values[chan];
}
}
void get_server_info_cb(pa_context *c,
const pa_server_info *i,
void *data)
{
pa_operation *o;
o = pa_context_get_sink_info_by_name(c, i->default_sink_name, get_default_sink_info_cb, data);
if (!o) {
qWarning() << "PaClient: get sink info by name: " <<
pa_strerror(pa_context_errno(c));
return;
}
}
void subscribe_cb(pa_context *c,
pa_subscription_event_type_t type,
uint32_t index,
void *data)
{
pa_operation *o;
if ((type & PA_SUBSCRIPTION_EVENT_TYPE_MASK) != PA_SUBSCRIPTION_EVENT_CHANGE) {
qWarning("PaClient: unhandled subscribe event operation");
return;
}
switch (type & PA_SUBSCRIPTION_EVENT_FACILITY_MASK) {
case PA_SUBSCRIPTION_EVENT_SINK:
o = pa_context_get_sink_info_by_index(c, index, get_sink_info_change_cb, data);
if (!o) {
qWarning() << "PaClient: get sink info by index: " <<
pa_strerror(pa_context_errno(c));
return;
}
break;
default:
qWarning("PaClient: unhandled subscribe event facility");
}
}
void context_state_cb(pa_context *c, void *data)
{
pa_operation *o;
PaClient *self = reinterpret_cast<PaClient*>(data);
switch (pa_context_get_state(c)) {
case PA_CONTEXT_CONNECTING:
case PA_CONTEXT_AUTHORIZING:
case PA_CONTEXT_SETTING_NAME:
break;
case PA_CONTEXT_READY:
o = pa_context_get_server_info(c, get_server_info_cb, data);
if (!o) {
qWarning() << "PaClient: get server info: " <<
pa_strerror(pa_context_errno(c));
return;
}
pa_operation_unref(o);
pa_context_set_subscribe_callback(c, subscribe_cb, data);
o = pa_context_subscribe(c, (pa_subscription_mask_t)(PA_SUBSCRIPTION_MASK_SINK), NULL, NULL);
if (!o) {
qWarning() << "PaClient: subscribe: " <<
pa_strerror(pa_context_errno(c));
return;
}
break;
case PA_CONTEXT_TERMINATED:
self->close();
break;
case PA_CONTEXT_FAILED:
default:
qCritical() << "PaClient: connection failed: " <<
pa_strerror(pa_context_errno(c));
self->close();
break;
}
}
void PaClient::init()
{
m_ml = pa_threaded_mainloop_new();
if (!m_ml) {
qCritical("PaClient: failed to create mainloop");
return;
}
pa_threaded_mainloop_set_name(m_ml, "PaClient mainloop");
m_mlapi = pa_threaded_mainloop_get_api(m_ml);
lock();
m_ctx = pa_context_new(m_mlapi, "HomeScreen");
if (!m_ctx) {
qCritical("PaClient: failed to create context");
unlock();
pa_threaded_mainloop_free(m_ml);
return;
}
pa_context_set_state_callback(m_ctx, context_state_cb, this);
if (pa_context_connect(m_ctx, 0, (pa_context_flags_t)0, 0) < 0) {
qCritical("PaClient: failed to connect");
pa_context_unref(m_ctx);
unlock();
pa_threaded_mainloop_free(m_ml);
return;
}
if (pa_threaded_mainloop_start(m_ml) != 0) {
qCritical("PaClient: failed to start mainloop");
pa_context_unref(m_ctx);
unlock();
pa_threaded_mainloop_free(m_ml);
return;
}
unlock();
m_init = true;
}
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