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Qt audio sounds a lot better with a larger mixlen.

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I suppose real buffers would be a proper solution although I can't seem to get it working.
This commit is contained in:
Sacha 2014-09-10 05:12:17 +10:00
parent c606067044
commit 3c0d666e90
1 changed files with 4 additions and 3 deletions
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7
base/QtMain.h
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@ -242,6 +242,7 @@ static MainUI* emugl = NULL;
#define AUDIO_CHANNELS 2
#define AUDIO_SAMPLES 2048
#define AUDIO_SAMPLESIZE 16
#define AUDIO_BUFFERS 5
class MainAudio: public QObject
{
Q_OBJECT
@ -269,7 +270,7 @@ public slots:
fmt.setSampleSize(AUDIO_SAMPLESIZE);
fmt.setByteOrder(QAudioFormat::LittleEndian);
fmt.setSampleType(QAudioFormat::SignedInt);
mixlen = 2*AUDIO_CHANNELS*AUDIO_SAMPLES;
mixlen = sizeof(short)*AUDIO_BUFFERS*AUDIO_CHANNELS*AUDIO_SAMPLES;
mixbuf = (char*)malloc(mixlen);
output = new QAudioOutput(fmt);
output->setBufferSize(mixlen);
@ -281,9 +282,9 @@ public slots:
protected:
void timerEvent(QTimerEvent *) {
memset(mixbuf, 0, mixlen);
size_t frames = NativeMix((short *)mixbuf, AUDIO_SAMPLES);
size_t frames = NativeMix((short *)mixbuf, AUDIO_BUFFERS*AUDIO_SAMPLES);
if (frames > 0)
feed->write(mixbuf, sizeof(short) * 2 * frames);
feed->write(mixbuf, sizeof(short) * AUDIO_CHANNELS * frames);
}
private:
QIODevice* feed;