Когда вы воспроизводите удаленное видео через AVPlayer
и начинаете перемотку, скруббер не работает.
Я делаю игрока на основе этого примера Apple.
Как реализовать его плавно?
Ниже приведен код из моего проекта - https://github.com/nullproduction/Player
- (void)initScrubberTimer
{
double interval = .1f;
CMTime playerDuration = [self playerItemDuration];
if (CMTIME_IS_INVALID(playerDuration))
{
return;
}
double duration = CMTimeGetSeconds(playerDuration);
if (isfinite(duration))
{
CGFloat width = CGRectGetWidth([scrubberSlider bounds]);
interval = 0.5f * duration / width;
}
__weak id weakSelf = self;
CMTime intervalSeconds = CMTimeMakeWithSeconds(interval, NSEC_PER_SEC);
mTimeObserver = [self.player addPeriodicTimeObserverForInterval:intervalSeconds
queue:dispatch_get_main_queue()
usingBlock:^(CMTime time) {
[weakSelf syncScrubber];
}];
}
- (void)syncScrubber
{
CMTime playerDuration = [self playerItemDuration];
if (CMTIME_IS_INVALID(playerDuration))
{
scrubberSlider.minimumValue = 0.0;
return;
}
double duration = CMTimeGetSeconds(playerDuration);
if (isfinite(duration))
{
float minValue = [scrubberSlider minimumValue];
float maxValue = [scrubberSlider maximumValue];
double time = CMTimeGetSeconds([self.player currentTime]);
[scrubberSlider setValue:(maxValue - minValue) * time / duration + minValue];
}
}
- (IBAction)beginScrubbing:(id)sender
{
mRestoreAfterScrubbingRate = [self.player rate];
[self.player setRate:0.f];
[self removePlayerTimeObserver];
}
- (IBAction)scrub:(id)sender
{
if ([sender isKindOfClass:[UISlider class]])
{
UISlider* slider = sender;
CMTime playerDuration = [self playerItemDuration];
if (CMTIME_IS_INVALID(playerDuration))
{
return;
}
double duration = CMTimeGetSeconds(playerDuration);
if (isfinite(duration))
{
float minValue = [slider minimumValue];
float maxValue = [slider maximumValue];
float value = [slider value];
double time = duration * (value - minValue) / (maxValue - minValue);
[self.player seekToTime:CMTimeMakeWithSeconds(time, NSEC_PER_SEC)];
}
}
}
- (IBAction)endScrubbing:(id)sender
{
if (!mTimeObserver)
{
CMTime playerDuration = [self playerItemDuration];
if (CMTIME_IS_INVALID(playerDuration))
{
return;
}
double duration = CMTimeGetSeconds(playerDuration);
if (isfinite(duration))
{
CGFloat width = CGRectGetWidth([scrubberSlider bounds]);
double tolerance = 0.5f * duration / width;
__weak id weakSelf = self;
CMTime intervalSeconds = CMTimeMakeWithSeconds(tolerance, NSEC_PER_SEC);
mTimeObserver = [self.player addPeriodicTimeObserverForInterval:intervalSeconds
queue:dispatch_get_main_queue()
usingBlock: ^(CMTime time) {
[weakSelf syncScrubber];
}];
}
}
if (mRestoreAfterScrubbingRate)
{
[self.player setRate:mRestoreAfterScrubbingRate];
mRestoreAfterScrubbingRate = 0.f;
}
}