| 1 | /** |
| 2 | * Copyright (C) 2011-2012 Juho Vähä-Herttua |
| 3 | * |
| 4 | * This library is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU Lesser General Public |
| 6 | * License as published by the Free Software Foundation; either |
| 7 | * version 2.1 of the License, or (at your option) any later version. |
| 8 | * |
| 9 | * This library is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 12 | * Lesser General Public License for more details. |
| 13 | */ |
| 14 | |
| 15 | #include "raopservice.h" |
| 16 | |
| 17 | #include <QDebug> |
| 18 | #include <QFile> |
| 19 | |
| 20 | static void |
| 21 | audio_init(void *cls, void **session, int bits, int channels, int samplerate) |
| 22 | { |
| 23 | QMetaObject::invokeMethod((QObject*)cls, "audioInit", Qt::BlockingQueuedConnection, |
| 24 | Q_ARG(void*, (void*)session), |
| 25 | Q_ARG(int, bits), |
| 26 | Q_ARG(int, channels), |
| 27 | Q_ARG(int, samplerate)); |
| 28 | } |
| 29 | |
| 30 | static void |
| 31 | audio_set_volume(void *cls, void *session, float volume) |
| 32 | { |
| 33 | QMetaObject::invokeMethod((QObject*)cls, "audioSetVolume", Qt::BlockingQueuedConnection, |
| 34 | Q_ARG(void*, session), |
| 35 | Q_ARG(float, volume)); |
| 36 | } |
| 37 | |
| 38 | static void |
| 39 | audio_process(void *cls, void *session, const void *buffer, int buflen) |
| 40 | { |
| 41 | QMetaObject::invokeMethod((QObject*)cls, "audioProcess", Qt::BlockingQueuedConnection, |
| 42 | Q_ARG(void*, session), |
| 43 | Q_ARG(void*, (void*)buffer), |
| 44 | Q_ARG(int, buflen)); |
| 45 | } |
| 46 | |
| 47 | static void |
| 48 | audio_flush(void *cls, void *session) |
| 49 | { |
| 50 | QMetaObject::invokeMethod((QObject*)cls, "audioFlush", Qt::BlockingQueuedConnection, |
| 51 | Q_ARG(void*, session)); |
| 52 | } |
| 53 | |
| 54 | static void |
| 55 | audio_destroy(void *cls, void *session) |
| 56 | { |
| 57 | QMetaObject::invokeMethod((QObject*)cls, "audioDestroy", Qt::BlockingQueuedConnection, |
| 58 | Q_ARG(void*, session)); |
| 59 | } |
| 60 | |
| 61 | RaopService::RaopService(QObject *parent) : |
| 62 | QObject(parent), |
| 63 | m_dnssd(0), |
| 64 | m_raop(0) |
| 65 | { |
| 66 | /* This whole hack is required because QAudioOutput |
| 67 | * needs to be created in a QThread, threads created |
| 68 | * outside Qt are not allowed (they have no eventloop) */ |
| 69 | m_handler.moveToThread(&m_thread); |
| 70 | } |
| 71 | |
| 72 | RaopService::~RaopService() |
| 73 | { |
| 74 | this->stop(); |
| 75 | |
| 76 | dnssd_destroy(m_dnssd); |
| 77 | raop_destroy(m_raop); |
| 78 | } |
| 79 | |
| 80 | bool RaopService::init() |
| 81 | { |
| 82 | const char hwaddr[] = { 0x48, 0x5d, 0x60, 0x7c, 0xee, 0x22 }; |
| 83 | raop_callbacks_t raop_cbs; |
| 84 | int error; |
| 85 | |
| 86 | raop_cbs.cls = &m_handler; |
| 87 | raop_cbs.audio_init = audio_init; |
| 88 | raop_cbs.audio_set_volume = audio_set_volume; |
| 89 | raop_cbs.audio_process = audio_process; |
| 90 | raop_cbs.audio_flush = audio_flush; |
| 91 | raop_cbs.audio_destroy = audio_destroy; |
| 92 | |
| 93 | QFile file("airport.key"); |
| 94 | if (!file.exists()) { |
| 95 | // This is used when running from Qt Creator on Mac |
| 96 | file.setFileName("../../../../airport.key"); |
| 97 | } |
| 98 | if (!file.exists()) { |
| 99 | // This is used when running from Qt Creator on Windows |
| 100 | file.setFileName("../airport.key"); |
| 101 | } |
| 102 | if (!file.exists()) { |
| 103 | return false; |
| 104 | } |
| 105 | file.open(QIODevice::ReadOnly); |
| 106 | QByteArray array = file.read(file.size()); |
| 107 | array.append('\0'); |
| 108 | |
| 109 | m_raop = raop_init(&raop_cbs, array.data(), hwaddr, sizeof(hwaddr)); |
| 110 | if (!m_raop) { |
| 111 | return false; |
| 112 | } |
| 113 | |
| 114 | m_dnssd = dnssd_init(hwaddr, sizeof(hwaddr), &error); |
| 115 | if (!m_dnssd) { |
| 116 | raop_destroy(m_raop); |
| 117 | m_raop = NULL; |
| 118 | return false; |
| 119 | } |
| 120 | |
| 121 | return true; |
| 122 | } |
| 123 | |
| 124 | bool RaopService::start(const QString & name, quint16 port) |
| 125 | { |
| 126 | if (!m_raop || !m_dnssd || m_thread.isRunning()) { |
| 127 | return false; |
| 128 | } |
| 129 | |
| 130 | m_thread.start(); |
| 131 | if (raop_start(m_raop, &port) < 0) { |
| 132 | m_thread.quit(); |
| 133 | m_thread.wait(); |
| 134 | return false; |
| 135 | } |
| 136 | if (dnssd_register_raop(m_dnssd, name.toUtf8(), port) < 0) { |
| 137 | raop_stop(m_raop); |
| 138 | m_thread.quit(); |
| 139 | m_thread.wait(); |
| 140 | return false; |
| 141 | } |
| 142 | |
| 143 | return true; |
| 144 | } |
| 145 | |
| 146 | void RaopService::stop() |
| 147 | { |
| 148 | if (m_dnssd) { |
| 149 | dnssd_unregister_raop(m_dnssd); |
| 150 | } |
| 151 | if (m_raop) { |
| 152 | raop_stop(m_raop); |
| 153 | } |
| 154 | if (m_thread.isRunning()) { |
| 155 | m_thread.quit(); |
| 156 | m_thread.wait(); |
| 157 | } |
| 158 | } |
| 159 | |