/
pulseaudiosinksmanager.cpp
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/
pulseaudiosinksmanager.cpp
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#include "pulseaudiosinksmanager.h"
#include "qaudioswitcher.h"
#include "paoperation.h"
#include <pulse/pulseaudio.h>
#include <pulse/ext-stream-restore.h>
#include <QObject>
#include <QDebug>
auto context_deleter = [](pa_context* ctx){
pa_context_disconnect(ctx);
pa_context_unref(ctx);
};
auto loop_deleter = [](pa_threaded_mainloop* loop){
pa_threaded_mainloop_free(loop);
};
PulseAudioSinksManager::PulseAudioSinksManager(QObject *parent):AudioManager(parent),
pa_ml(nullptr,loop_deleter),pa_ctx(nullptr,context_deleter)
{
qRegisterMetaType<AudioDevice>("AudioDevice");
}
PulseAudioSinksManager::~PulseAudioSinksManager()
{
}
void PulseAudioSinksManager::retrieveSinks()
{
pa_mainloop_api *pa_mlapi;
// Create a mainloop API and connection to the default server
pa_ml.reset(pa_threaded_mainloop_new());
pa_mlapi = pa_threaded_mainloop_get_api(pa_ml.get());
pa_ctx.reset(pa_context_new(pa_mlapi, "QAudioSwitcher"));
pa_context_set_state_callback(pa_ctx.get(), PulseAudioSinksManager::pulseAudioStateCallback, this);
pa_context_connect(pa_ctx.get(), NULL, PA_CONTEXT_NOFAIL , NULL);
pa_threaded_mainloop_start(pa_ml.get());
}
void PulseAudioSinksManager::pulseAudioMixerControlStreamRestoreCallback (pa_context *ctx, const pa_ext_stream_restore_info *info,
int eol, void *userdata) {
pa_ext_stream_restore_info new_info;
PulseAudioSinksManager* sinksManager = (PulseAudioSinksManager*)userdata;
if (eol) return;
new_info.name = info->name;
new_info.channel_map = info->channel_map;
new_info.volume = info->volume;
new_info.mute = info->mute;
std::string device = sinksManager->defaultDevice.toStdString();
new_info.device = device.c_str();
PaOperation op(pa_ext_stream_restore_write (ctx,PA_UPDATE_REPLACE,
&new_info, 1,1, NULL, NULL));
if (!op) {
//g_warning ("pa_ext_stream_restore_write() failed: %s",
// pa_strerror (pa_context_errno (control->priv->pa_context)));
return;
}
//g_debug ("Changed default device for %s to %s", info->name, info->device);
}
void PulseAudioSinksManager::setDefaultSink(const QString& name)
{
defaultDevice = name;
std::string std_name = defaultDevice.toStdString();
qDebug() << "setting sink to "<<name<<", and from std_String to "<<std_name.c_str();
PaOperation op(pa_context_set_default_sink (pa_ctx.get(),std_name.c_str(),NULL,NULL));
if (!op) {
//g_warning ("pa_context_set_default_sink() failed: %s",
// pa_strerror (pa_context_errno (control->priv->pa_context)));
return;
}
op = pa_ext_stream_restore_read (pa_ctx.get(), PulseAudioSinksManager::pulseAudioMixerControlStreamRestoreCallback,
this);
if (!op) {
return;
}
}
void PulseAudioSinksManager::pulseAudioStateCallback(pa_context *ctx, void *userdata)
{
PulseAudioSinksManager* sinksManager = (PulseAudioSinksManager*)userdata;
pa_context_state_t state = pa_context_get_state(ctx);
switch (state) {
// There are just here for reference
case PA_CONTEXT_UNCONNECTED:
case PA_CONTEXT_CONNECTING:
case PA_CONTEXT_AUTHORIZING:
case PA_CONTEXT_SETTING_NAME:
case PA_CONTEXT_TERMINATED:
default:
break;
case PA_CONTEXT_FAILED:
sinksManager->emitSignalError("Cannot connect to pulse audio");
break;
case PA_CONTEXT_READY:
sinksManager->retrieveSinksInfo();
break;
}
}
void PulseAudioSinksManager::emitSignalError(const QString message)
{
emit signalError(message);
}
void PulseAudioSinksManager::emitSignalAddDevice(AudioDevice sink)
{
emit signalAddDevice(sink);
}
void PulseAudioSinksManager::emitSignalSinkListComplete()
{
emit signalSinkListComplete();
}
void PulseAudioSinksManager::pulseAudioSinklistCallback(pa_context* /*ctx*/, const pa_sink_info *info, int eol, void *userdata)
{
PulseAudioSinksManager* sinksManager = (PulseAudioSinksManager*)userdata;
// If eol is set to a positive number, you're at the end of the list
if (eol == 0) {
AudioDevice sink(info->name,info->description, sinksManager->getPulseAudioIconName(info->proplist).c_str());
sinksManager->emitSignalAddDevice(sink);
} else {
sinksManager->emitSignalSinkListComplete();
}
}
std::string PulseAudioSinksManager::getPulseAudioIconName(pa_proplist *properties)
{
const char* name;
if((name=pa_proplist_gets(properties,PA_PROP_DEVICE_ICON_NAME))) {
return std::string(name);
}
if((name=pa_proplist_gets(properties,PA_PROP_MEDIA_ICON_NAME))) {
return std::string(name);
}
if((name=pa_proplist_gets(properties,PA_PROP_WINDOW_ICON_NAME))) {
return std::string(name);
}
if((name=pa_proplist_gets(properties,PA_PROP_APPLICATION_ICON_NAME))) {
return std::string(name);
}
return "";
}
void PulseAudioSinksManager::retrieveSinksInfo()
{
PaOperation op;
op=pa_context_get_sink_info_list(pa_ctx.get(),PulseAudioSinksManager::pulseAudioSinklistCallback,this);
}