-If play() is called again kill old 'looping/playing' in favor

 of the new value. This deletes the timer and would fix possible
 shortage on timer resources
-A small friend to hook to an internal signal to avoid problems
 in Opie::Core::ODevice entering the event loop to wait for
 the sound to be finished. processEvents() can give strange results as
 some applications do not expect that the eventloop is entered. This
 could possible deliver a Timer, or an Event from QSocketNotifier
 which could give all kind of problems of wrong reentrancy.
 So let us avoid it.

1 files changed, 33 insertions, 2 deletions

diff --git a/library/sound.cpp b/library/sound.cpp
index ee2aabc..d1e2388 100644
--- a/library/sound.cpp
+++ b/library/sound.cpp
@@ -1,222 +1,253 @@
 /**********************************************************************
 ** Copyright (C) 2000 Trolltech AS.  All rights reserved.
 **
 ** This file is part of Qtopia Environment.
 **
 ** This file may be distributed and/or modified under the terms of the
 ** GNU General Public License version 2 as published by the Free Software
 ** Foundation and appearing in the file LICENSE.GPL included in the
 ** packaging of this file.
 **
 ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 **
 ** See http://www.trolltech.com/gpl/ for GPL licensing information.
 **
 ** Contact info@trolltech.com if any conditions of this licensing are
 ** not clear to you.
 **
 **********************************************************************/
 
 #include <qpe/resource.h>
 #include <qpe/sound.h>
 #include <qpe/qcopenvelope_qws.h>
 
 #include <qsound.h>
 #include <qfile.h>
 
 #include <unistd.h>
 #include <fcntl.h>
 #include <sys/ioctl.h>
 
 #ifndef QT_NO_SOUND
 #include <sys/soundcard.h>
 #endif
 
 #ifndef QT_NO_SOUND
 static int WAVsoundDuration(const QString& filename)
 {
     // bad solution
 
     // most of this is copied from qsoundqss.cpp
 
     QFile input(filename);
     if ( !input.open(IO_ReadOnly) )
         return 0;
 
     struct QRiffChunk {
         char id[4];
         Q_UINT32 size;
         char data[4/*size*/];
     } chunk;
 
     struct {
         Q_INT16 formatTag;
         Q_INT16 channels;
         Q_INT32 samplesPerSec;
         Q_INT32 avgBytesPerSec;
         Q_INT16 blockAlign;
         Q_INT16 wBitsPerSample;
     } chunkdata;
 
     int total = 0;
 
     while(1) {
         // Keep reading chunks...
         const int n = sizeof(chunk)-sizeof(chunk.data);
         if ( input.readBlock((char*)&chunk,n) != n )
             break;
         if ( qstrncmp(chunk.id,"data",4) == 0 ) {
             total += chunkdata.avgBytesPerSec ?
                 chunk.size * 1000 / chunkdata.avgBytesPerSec : 0;
 //qDebug("%d bytes of PCM (%dms)", chunk.size,chunkdata.avgBytesPerSec ?  chunk.size * 1000 / chunkdata.avgBytesPerSec : 0);
             input.at(input.at()+chunk.size-4);
         } else if ( qstrncmp(chunk.id,"RIFF",4) == 0 ) {
             char d[4];
             if ( input.readBlock(d,4) != 4 )
                 return 0;
             if ( qstrncmp(d,"WAVE",4) != 0 ) {
                 // skip
 //qDebug("skip %.4s RIFF chunk",d);
                 if ( chunk.size < 10000000 )
                     (void)input.at(input.at()+chunk.size-4);
             }
         } else if ( qstrncmp(chunk.id,"fmt ",4) == 0 ) {
             if ( input.readBlock((char*)&chunkdata,sizeof(chunkdata)) != sizeof(chunkdata) )
                 return 0;
 #define WAVE_FORMAT_PCM 1
             if ( chunkdata.formatTag != WAVE_FORMAT_PCM ) {
                 //qDebug("WAV file: UNSUPPORTED FORMAT %d",chunkdata.formatTag);
                 return 0;
             }
         } else {
 //qDebug("skip %.4s chunk",chunk.id);
             // ignored chunk
             if ( chunk.size < 10000000 )
                 (void)input.at(input.at()+chunk.size);
         }
     }
 
 //qDebug("%dms",total);
     return total;
 }
 
 class SoundData : public QSound {
+    Q_OBJECT
+signals:
+    void stopped();
 public:
         SoundData ( const QString& name ) :
                 QSound ( Resource::findSound ( name )),
                 filename ( Resource::findSound ( name ))
         {
                 loopsleft=0;
                 ms = WAVsoundDuration(filename);
         }
 
         void playLoop ( int loopcnt = -1 )
         {
                 // needs server support
                 loopsleft = loopcnt;
 
                 if ( ms )
                         startTimer ( ms > 50 ? ms-50 : 0 ); // 50 for latency
                 play ( );
         }
 
     void timerEvent ( QTimerEvent *e )
     {
                 if ( loopsleft >= 0 ) {
                         if ( --loopsleft <= 0 ) {
                                 killTimer ( e-> timerId ( ));
                                 loopsleft = 0;
                                 return;
                         }
                 }
                 play();
         }
 
-        bool isFinished ( ) const
+    bool isFinished ( ) const
         {
-                return ( loopsleft == 0 );
+            return ( loopsleft == 0 );
         }
 
+    /*
+     * non virtual reimplementation
+     * @internal
+     */
+    void killTimers() {
+        QObject::killTimers();
+        emit stopped();
+    }
+
 private:
         QString filename;
         int loopsleft;
         int ms;
 };
 
 #endif
 
+
+/*
+ * @internal
+ * Using sender() when the slot is called is unsafe!
+ *
+ * @param snd  instance
+ * @param obj  The QObject to be called
+ * @param slot connect SIGNAL(stopped()) to slot
+ */
+void register_qpe_sound_finished( Sound* snd, QObject* obj, const char* slot ) {
+#ifndef QT_NO_SOUND
+    QObject::connect(snd->d, SIGNAL(stopped()), obj, slot );
+#endif
+}
+
 /*! Opens a wave sound file \a name for playing
  * Resource is used for finding the file
  **/
 Sound::Sound(const QString& name)
 {
 #ifndef QT_NO_SOUND
     d = new SoundData(name);
 #endif
 }
 
 /*! Destroys the sound */
 Sound::~Sound()
 {
 #ifndef QT_NO_SOUND
     delete d;
 #endif
 }
 
 /*! Play the sound once */
 void Sound::play()
 {
 #ifndef QT_NO_SOUND
+    d->killTimers();
     d->playLoop(1);
 #endif
 }
 
 /*! Play the sound, repeatedly until stop() is called */
 void Sound::playLoop()
 {
 #ifndef QT_NO_SOUND
     d->killTimers();
     d->playLoop();
 #endif
 }
 
 /*! Do not repeat the sound after it finishes. This will end a playLoop() */
 void Sound::stop()
 {
 #ifndef QT_NO_SOUND
     d->killTimers();
 #endif
 }
 
 bool Sound::isFinished() const
 {
 #ifndef QT_NO_SOUND
     return d->isFinished();
 #else
         return true;
 #endif
 }
 
 /*! Sounds the audible system alarm. This is used for applications such
   as Calendar when it needs to alarm the user of an event.
 */
 void Sound::soundAlarm()
 {
 #ifndef QT_NO_COP
     QCopEnvelope( "QPE/TaskBar", "soundAlarm()" );
 #endif
 }
 
 
 /*! \class Sound
   \brief The Sound class plays WAVE sound files and can invoke the audible alarm.
 
   The Sound class is constructed with the .wav music file name. The Sound
   class retrieves the sound file from the shared Resource class. This class
   ties together QSound and the available sound resources.
 
   To sound an audible system alarm, call the static method soundAlarm()
 
   \ingroup qtopiaemb
 */
+
+
+#include "sound.moc"