double AudioBufferSourceNode::totalPitchRate()
{
double dopplerRate = 1.0;
if (m_pannerNode)
dopplerRate = m_pannerNode->dopplerRate();
// Incorporate buffer's sample-rate versus AudioContext's sample-rate.
// Normally it's not an issue because buffers are loaded at the AudioContext's sample-rate, but we can handle it in any case.
double sampleRateFactor = 1.0;
if (buffer())
sampleRateFactor = buffer()->sampleRate() / sampleRate();
double basePitchRate = playbackRate()->value();
double totalRate = dopplerRate * sampleRateFactor * basePitchRate;
totalRate = std::max(-MaxRate, std::min(MaxRate, totalRate));
bool isTotalRateValid = !std::isnan(totalRate) && !std::isinf(totalRate);
ASSERT(isTotalRateValid);
if (!isTotalRateValid)
totalRate = 1.0;
return totalRate;
}
double AudioBufferSourceNode::totalPitchRate()
{
double dopplerRate = 1.0;
if (m_pannerNode.get())
dopplerRate = m_pannerNode->dopplerRate();
// Incorporate buffer's sample-rate versus AudioContext's sample-rate.
// Normally it's not an issue because buffers are loaded at the AudioContext's sample-rate, but we can handle it in any case.
double sampleRateFactor = 1.0;
if (buffer())
sampleRateFactor = buffer()->sampleRate() / sampleRate();
double basePitchRate = playbackRate()->value();
double totalRate = dopplerRate * sampleRateFactor * basePitchRate;
// Sanity check the total rate. It's very important that the resampler not get any bad rate values.
totalRate = max(0.0, totalRate);
if (!totalRate)
totalRate = 1; // zero rate is considered illegal
totalRate = min(MaxRate, totalRate);
bool isTotalRateValid = !isnan(totalRate) && !isinf(totalRate);
ASSERT(isTotalRateValid);
if (!isTotalRateValid)
totalRate = 1.0;
return totalRate;
}
void S60MediaPlayerControl::setPlaybackRate(qreal rate)
{
// TODO: Add Symbian^3 support
m_mediaSettings.setPlaybackRate(rate);
emit playbackRateChanged(playbackRate());
}
bool AnimationPlayer::canStartAnimationOnCompositor()
{
// FIXME: Need compositor support for playback rate != 1.
if (playbackRate() != 1)
return false;
return m_timeline && m_content && m_content->isAnimation() && playing();
}
void QDeclarativeAudio::setPlaybackRate(qreal rate)
{
if (playbackRate() == rate)
return;
if (m_complete) {
m_player->setPlaybackRate(rate);
} else {
m_playbackRate = rate;
emit playbackRateChanged();
}
}
double AnimationTimeline::currentTimeInternal(bool& isNull)
{
if (!m_document) {
isNull = true;
return std::numeric_limits<double>::quiet_NaN();
}
// New currentTime = currentTime when the playback rate was last changed + time delta since then * playback rate
double delta = document()->animationClock().currentTime() - m_documentCurrentTimeSnapshot;
double result = m_documentCurrentTimeSnapshot - zeroTime() + delta * playbackRate();
isNull = std::isnan(result);
return result;
}
void PlayerControls::updateRate()
{
emit changeRate(playbackRate());
}
