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plugins/mac-virtualcam/src/dal-plugin/CMSampleBufferUtils.mm
26 строк
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andrewsoncha
plugins: Fix build issues in Xcode 26.4
26 май 2026, 20:39
26 май 2026, 20:39
d412d64
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// // CMSampleBufferUtils.m // dal-plugin // // Created by John Boiles on 5/8/20. // #import "CMSampleBufferUtils.h" CMSampleTimingInfo CMSampleTimingInfoForTimestamp(uint64_t timestampNanos, uint32_t fpsNumerator, uint32_t fpsDenominator) { // The timing here is quite important. For frames to be delivered correctly and successfully be recorded by apps // like QuickTime Player, we need to be accurate in both our timestamps _and_ have a sensible scale. Using large // timestamps and scales like clock_gettime_nsec_np() and NSEC_PER_SEC will work for display, but will error out // when trying to record. // // 600 is a common default in Apple's docs https://developer.apple.com/documentation/avfoundation/avmutablemovie/1390622-timescale CMTimeScale scale = 600; CMSampleTimingInfo timing; timing.duration = CMTimeMake(fpsDenominator * scale, fpsNumerator * scale); CMTime timestamp = CMTimeMake(timestampNanos, NSEC_PER_SEC); timing.presentationTimeStamp = CMTimeConvertScale(timestamp, scale, kCMTimeRoundingMethod_QuickTime); timing.decodeTimeStamp = kCMTimeInvalid; return timing; }