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Prune the gstreamer scope at a much lower interval

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This commit is contained in:
David Sansome 2010-07-02 19:23:08 +00:00
parent 77618d6a5e
commit d3e3d04fe1
2 changed files with 24 additions and 33 deletions
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50
src/engines/gstengine.cpp
View File

@ -61,8 +61,7 @@ GstEngine::GstEngine()
rg_preamp_(0.0),
rg_compression_(true),
seek_timer_(new QTimer(this)),
prune_scope_timer_id_(-1),
about_to_end_timer_id_(-1)
timer_id_(-1)
{
seek_timer_->setSingleShot(true);
seek_timer_->setInterval(kSeekDelay);
@ -594,40 +593,35 @@ void GstEngine::SetVolumeSW( uint percent ) {
void GstEngine::StartTimers() {
StopTimers();
prune_scope_timer_id_ = startTimer(kPruneScopeTimerInterval);
about_to_end_timer_id_ = startTimer(kAboutToEndTimerInterval);
timer_id_ = startTimer(kTimerInterval);
}
void GstEngine::StopTimers() {
if (prune_scope_timer_id_ != -1) {
killTimer(prune_scope_timer_id_);
prune_scope_timer_id_ = -1;
}
if (about_to_end_timer_id_ != -1) {
killTimer(about_to_end_timer_id_);
about_to_end_timer_id_ = -1;
if (timer_id_ != -1) {
killTimer(timer_id_);
timer_id_ = -1;
}
}
void GstEngine::timerEvent(QTimerEvent* e) {
if (e->timerId() == prune_scope_timer_id_) {
// keep the scope from building while we are not visible
// this is why the timer must run as long as we are playing, and not just when
// we are fading
PruneScope();
} else if (e->timerId() == about_to_end_timer_id_) {
// Emit TrackAboutToEnd when we're a few seconds away from finishing
if (current_pipeline_) {
const qint64 nanosec_position = current_pipeline_->position();
const qint64 nanosec_length = current_pipeline_->length();
const qint64 remaining = (nanosec_length - nanosec_position) / 1000000;
const qint64 fudge = kAboutToEndTimerInterval + 100; // Mmm fudge
const qint64 gap = autocrossfade_enabled_ ? fadeout_duration_ : kPreloadGap;
if (e->timerId() != timer_id_)
return;
if (nanosec_length > 0 && remaining < gap + fudge)
EmitAboutToEnd();
}
// keep the scope from building while we are not visible
// this is why the timer must run as long as we are playing, and not just when
// we are fading
PruneScope();
// Emit TrackAboutToEnd when we're a few seconds away from finishing
if (current_pipeline_) {
const qint64 nanosec_position = current_pipeline_->position();
const qint64 nanosec_length = current_pipeline_->length();
const qint64 remaining = (nanosec_length - nanosec_position) / 1000000;
const qint64 fudge = kTimerInterval + 100; // Mmm fudge
const qint64 gap = autocrossfade_enabled_ ? fadeout_duration_ : kPreloadGap;
if (nanosec_length > 0 && remaining < gap + fudge)
EmitAboutToEnd();
}
}

7
src/engines/gstengine.h
View File

@ -139,9 +139,7 @@ class GstEngine : public Engine::Base, public BufferConsumer {
qint64 PruneScope();
private:
// Interval of main timer, handles the volume fading
static const int kPruneScopeTimerInterval = 40; // msec
static const int kAboutToEndTimerInterval = 1500; // msec
static const int kTimerInterval = 1000; // msec
static const int kPreloadGap = 1000; // msec
static const int kSeekDelay = 100; // msec
@ -176,8 +174,7 @@ class GstEngine : public Engine::Base, public BufferConsumer {
bool waiting_to_seek_;
uint seek_pos_;
int prune_scope_timer_id_;
int about_to_end_timer_id_;
int timer_id_;
QHash<int, boost::shared_ptr<GstEnginePipeline> > background_streams_;
};