149 lines
3.7 KiB
C++
149 lines
3.7 KiB
C++
/*
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* Strawberry Music Player
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* This file was part of Clementine.
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* Copyright 2014, David Sansome <me@davidsansome.com>
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*
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* Strawberry is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Strawberry is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Strawberry. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "config.h"
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#include <pulse/context.h>
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#include <pulse/def.h>
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#include <pulse/introspect.h>
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#include <pulse/mainloop.h>
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#include <QtGlobal>
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#include <QVariant>
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#include <QString>
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#include "core/logging.h"
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#include "pulsedevicefinder.h"
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#include "enginedevice.h"
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PulseDeviceFinder::PulseDeviceFinder() : DeviceFinder(QStringLiteral("pulseaudio"), { "pulseaudio", "pulse", "pulsesink" }), mainloop_(nullptr), context_(nullptr) {}
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bool PulseDeviceFinder::Initialize() {
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mainloop_ = pa_mainloop_new();
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if (!mainloop_) {
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qLog(Warning) << "Failed to create pulseaudio mainloop";
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return false;
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}
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return Reconnect();
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}
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bool PulseDeviceFinder::Reconnect() {
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if (context_) {
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pa_context_disconnect(context_);
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pa_context_unref(context_);
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}
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context_ = pa_context_new(pa_mainloop_get_api(mainloop_), "Strawberry device finder");
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if (!context_) {
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qLog(Warning) << "Failed to create pulseaudio context";
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return false;
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}
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if (pa_context_connect(context_, nullptr, PA_CONTEXT_NOFLAGS, nullptr) < 0) {
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qLog(Warning) << "Failed to connect pulseaudio context";
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return false;
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}
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// Wait for the context to be connected.
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forever {
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const pa_context_state state = pa_context_get_state(context_);
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if (state == PA_CONTEXT_FAILED || state == PA_CONTEXT_TERMINATED) {
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qLog(Warning) << "Connection to pulseaudio failed";
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return false;
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}
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if (state == PA_CONTEXT_READY) {
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return true;
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}
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pa_mainloop_iterate(mainloop_, true, nullptr);
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}
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}
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EngineDeviceList PulseDeviceFinder::ListDevices() {
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if (!context_ || pa_context_get_state(context_) != PA_CONTEXT_READY) {
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return EngineDeviceList();
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}
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retry:
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ListDevicesState state;
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pa_context_get_sink_info_list(context_, &PulseDeviceFinder::GetSinkInfoCallback, &state);
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forever {
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if (state.finished) {
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return state.devices;
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}
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switch (pa_context_get_state(context_)) {
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case PA_CONTEXT_READY:
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break;
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case PA_CONTEXT_FAILED:
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case PA_CONTEXT_TERMINATED:
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// Maybe pulseaudio died. Try reconnecting.
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if (Reconnect()) {
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goto retry;
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}
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return state.devices;
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default:
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return state.devices;
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}
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pa_mainloop_iterate(mainloop_, true, nullptr);
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}
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}
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void PulseDeviceFinder::GetSinkInfoCallback(pa_context *c, const pa_sink_info *info, int eol, void *state_voidptr) {
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Q_UNUSED(c);
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ListDevicesState *state = reinterpret_cast<ListDevicesState*>(state_voidptr);
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if (!state) return;
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if (info) {
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EngineDevice device;
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device.description = QString::fromUtf8(info->description);
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device.value = QString::fromUtf8(info->name);
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device.iconname = device.GuessIconName();
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state->devices.append(device);
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}
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if (eol > 0) {
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state->finished = true;
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}
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}
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PulseDeviceFinder::~PulseDeviceFinder() {
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if (context_) {
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pa_context_disconnect(context_);
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pa_context_unref(context_);
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}
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if (mainloop_) {
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pa_mainloop_free(mainloop_);
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}
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}
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