Don't add the beginning of the file to the end of the last period
authorKevin Ottens <kevin.ottens.qnx@kdab.com>
Thu, 30 Aug 2012 13:43:13 +0000 (15:43 +0200)
committerThe Qt Project <gerrit-noreply@qt-project.org>
Mon, 8 Oct 2012 06:37:35 +0000 (08:37 +0200)
If we're in the last loop, it is not necessary to provide a full period
on read. Just provide the remaining of the data and hit the end of the
stream by returning less than requested, otherwise we potentially
generate some garbage noise.

Change-Id: I9d3a632ddc0c3289957c9f876d5dbe2999b50ebd
Reviewed-by: Thomas McGuire <thomas.mcguire@kdab.com>
src/multimedia/audio/qsoundeffect_qaudio_p.cpp

index ef5ff2d..785cdb5 100644 (file)
@@ -412,6 +412,9 @@ qint64 PrivateSoundSource::readData( char* data, qint64 len)
                 dataOffset += (sampleSize - m_offset);
                 m_offset = 0;
 
+                if (m_runningCount > 0 && m_runningCount != QSoundEffect::Infinite)
+                    soundeffect->setLoopsRemaining(m_runningCount-1);
+
                 if (m_runningCount > 0 || m_runningCount == QSoundEffect::Infinite) {
                     // There are still more loops of this sound to play, append the start of sound to make up full period
                     memcpy(data + dataOffset, sampleData + m_offset, wrapLen);
@@ -423,8 +426,6 @@ qint64 PrivateSoundSource::readData( char* data, qint64 len)
                              << ", part2=" << wrapLen;
                     qDebug() << "part1 + part2 should be a period " << periodSize;
 #endif
-                    if (m_runningCount != QSoundEffect::Infinite)
-                        soundeffect->setLoopsRemaining(m_runningCount-1);
                 }
             }
             if (m_runningCount == 0)