| -rw-r--r-- | library/sound.cpp | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/library/sound.cpp b/library/sound.cpp index 1ff3b3f..c8704f9 100644 --- a/library/sound.cpp +++ b/library/sound.cpp @@ -1,198 +1,221 @@ /********************************************************************** ** 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> #include <sys/soundcard.h> #include "config.h" #include <qmessagebox.h> #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 { 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 { return ( loopsleft == 0 ); } private: QString filename; int loopsleft; int ms; }; #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->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 +*/ |