Cached playback of audio files

doorlock_client now caches wave files in memory for faster playback.
LibAO is used for audio playback and libsndfile for wave file header
parsing.

doorlockd/client/doorlock-client.cpp

@@ -3,6 +3,8 @@
 #include <string>
 #include <thread>
 
+#include <ao/ao.h>
+
 #include <boost/asio.hpp>
 #include <boost/program_options.hpp>
 
@@ -164,8 +166,17 @@ int main(int argc, char** argv)
     app.setOrganizationName("Binary Kitchen");
     app.setApplicationName("doorlock-client");
 
+    ao_initialize();
+
+    try {
         mainWindow = std::unique_ptr<MainWindow>(new MainWindow);
         mainWindow->showFullScreen();
+    }
+    catch(const std::exception &e)
+    {
+        l(LogLevel::error, e.what());
+        exit(-1);
+    }
 
     // Start the TCP client as thread
     std::thread clientThread = std::thread([&] () {
@@ -199,6 +210,8 @@ int main(int argc, char** argv)
     if (mainWindow)
         mainWindow.reset();
 
+    ao_shutdown();
+
     l(LogLevel::notice, "Stopping doorlock-client");
     return 0;
 }

doorlockd/client/mainwindow.cpp

@@ -3,15 +3,17 @@
 #include "mainwindow.h"
 #include "ui_mainwindow.h"
 
-#define PLAY(file) \
-    system("play -q " file " &")
-
 MainWindow::MainWindow(QWidget *parent) :
     QWidget(parent),
-    ui(new Ui::MainWindow)
+    ui(new Ui::MainWindow),
+    _soundLock(Wave::fromFile(SOUND_LOCK)),
+    _soundUnlock(Wave::fromFile(SOUND_UNLOCK)),
+    _soundEmergencyUnlock(Wave::fromFile(SOUND_EMERGENCY_UNLOCK)),
+    _soundZonk(Wave::fromFile(SOUND_ZONK)),
+    _soundLockButton(Wave::fromFile(SOUND_LOCK_BUTTON)),
+    _soundUnlockButton(Wave::fromFile(SOUND_UNLOCK_BUTTON))
 {
     ui->setupUi(this);
-
     _LED(false);
 }
 
@@ -31,23 +33,23 @@ void MainWindow::setClientmessage(const Clientmessage &msg)
 
     if (_oldMessage.isOpen() && !msg.isOpen()) {
         // regular close
-        PLAY(SOUND_LOCK);
+        _soundLock.playAsync();
     } else if (!_oldMessage.isOpen() && msg.isOpen()) {
         // regular open
-        PLAY(SOUND_UNLOCK);
+        _soundUnlock.playAsync();
     } else {
         // no change
     }
 
     if (doormsg.isEmergencyUnlock) {
-        PLAY(SOUND_EMERGENCY_UNLOCK);
+        _soundEmergencyUnlock.playAsync();
     } else if (doormsg.isLockButton) {
-        PLAY(SOUND_LOCK_BUTTON);
+        _soundLockButton.playAsync();
     } else if (doormsg.isUnlockButton) {
         if (msg.isOpen()) {
-            PLAY(SOUND_ZONK);
+            _soundZonk.playAsync();
         } else {
-            PLAY(SOUND_UNLOCK_BUTTON);
+            _soundUnlockButton.playAsync();
         }
     }
 

doorlockd/client/mainwindow.h

@@ -2,7 +2,9 @@
 #define MAINWINDOW_H
 
 #include <QWidget>
+
 #include "../lib/clientmessage.h"
+#include "wave.h"
 
 namespace Ui {
 class MainWindow;
@@ -27,6 +29,13 @@ private:
 
     Clientmessage _oldMessage = { };
 
+    const Wave _soundLock;
+    const Wave _soundUnlock;
+    const Wave _soundEmergencyUnlock;
+    const Wave _soundZonk;
+    const Wave _soundLockButton;
+    const Wave _soundUnlockButton;
+
     void _LED(const bool on);
 };