Mirrors/overte
3
0
Fork 0
mirror of https://github.com/overte-org/overte.git synced 2025-04-20 03:24:00 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

Stereo flag + specific resample in Sound class

Browse source
This commit is contained in:
Atlante45 2014-09-25 18:11:48 -07:00
parent 7f4ece2be1
commit 453869c8e9
3 changed files with 24 additions and 8 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
libraries/audio/src/AudioScriptingInterface.cpp
View file

@ -13,6 +13,9 @@
AudioInjector* AudioScriptingInterface::playSound(Sound* sound, const AudioInjectorOptions* injectorOptions) {
if (sound->isStereo()) {
const_cast<AudioInjectorOptions*>(injectorOptions)->setIsStereo(true);
}
AudioInjector* injector = new AudioInjector(sound, *injectorOptions);
QThread* injectorThread = new QThread();

25
libraries/audio/src/Sound.cpp
View file

@ -31,7 +31,8 @@
// procedural audio version of Sound
Sound::Sound(float volume, float frequency, float duration, float decay, QObject* parent) :
QObject(parent)
QObject(parent),
_isStereo(false)
{
static char monoAudioData[MAX_PACKET_SIZE];
static int16_t* monoAudioSamples = (int16_t*)(monoAudioData);
@ -69,8 +70,9 @@ Sound::Sound(float volume, float frequency, float duration, float decay, QObject
}
}
Sound::Sound(const QUrl& sampleURL, QObject* parent) :
Sound::Sound(const QUrl& sampleURL, bool isStereo, QObject* parent) :
QObject(parent),
_isStereo(isStereo),
_hasDownloaded(false)
{
// assume we have a QApplication or QCoreApplication instance and use the
@ -88,6 +90,7 @@ Sound::Sound(const QUrl& sampleURL, QObject* parent) :
Sound::Sound(const QByteArray byteArray, QObject* parent) :
QObject(parent),
_byteArray(byteArray),
_isStereo(false),
_hasDownloaded(true)
{
}
@ -149,11 +152,19 @@ void Sound::downSample(const QByteArray& rawAudioByteArray) {
int16_t* sourceSamples = (int16_t*) rawAudioByteArray.data();
int16_t* destinationSamples = (int16_t*) _byteArray.data();
for (int i = 1; i < numSourceSamples; i += 2) {
if (i + 1 >= numSourceSamples) {
destinationSamples[(i - 1) / 2] = (sourceSamples[i - 1] / 2) + (sourceSamples[i] / 2);
} else {
destinationSamples[(i - 1) / 2] = (sourceSamples[i - 1] / 4) + (sourceSamples[i] / 2) + (sourceSamples[i + 1] / 4);
if (_isStereo) {
for (int i = 0; i < numSourceSamples; i += 4) {
destinationSamples[i / 2] = (sourceSamples[i] / 2) + (sourceSamples[i + 2] / 2);
destinationSamples[(i / 2) + 1] = (sourceSamples[i + 1] / 2) + (sourceSamples[i + 3] / 2);
}
} else {
for (int i = 1; i < numSourceSamples; i += 2) {
if (i + 1 >= numSourceSamples) {
destinationSamples[(i - 1) / 2] = (sourceSamples[i - 1] / 2) + (sourceSamples[i] / 2);
} else {
destinationSamples[(i - 1) / 2] = (sourceSamples[i - 1] / 4) + (sourceSamples[i] / 2) + (sourceSamples[i + 1] / 4);
}
}
}
}

4
libraries/audio/src/Sound.h
View file

@ -20,17 +20,19 @@ class Sound : public QObject {
Q_PROPERTY(bool downloaded READ hasDownloaded)
public:
Sound(const QUrl& sampleURL, QObject* parent = NULL);
Sound(const QUrl& sampleURL, bool isStereo = false, QObject* parent = NULL);
Sound(float volume, float frequency, float duration, float decay, QObject* parent = NULL);
Sound(const QByteArray byteArray, QObject* parent = NULL);
void append(const QByteArray byteArray);
bool isStereo() const { return _isStereo; }
bool hasDownloaded() const { return _hasDownloaded; }
const QByteArray& getByteArray() { return _byteArray; }
private:
QByteArray _byteArray;
bool _isStereo;
bool _hasDownloaded;
void trimFrames();