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Apple Developer Documentation
https://developer.apple.com/documentation/audiotoolbox/1502689-audioqueuestart
The time at which the audio queue should start. To specify a start time relative to the timeline of the associated audio device, use the m Sample Time field of the Audio Time Stamp structure. Use NULL to indicate that the audio queue should start as soon as possible.
ios - Precise time of audio queue playback finish - Stack ...
https://stackoverflow.com/questions/30377711/precise-time-of-audio-queue-playback-finish
The timestamp ties together the current sample playing with the current machine time. With that info we can get an exact machine time in the future when our last sample will be played. ... You set it up like this after AudioQueueNewOutput and before AudioQueueStart. Notice the passing of bridged self to the inClientData argument.
Apple Developer Documentation
https://developer.apple.com/documentation/audiotoolbox/audio_queue_services
Overview. This document describes Audio Queue Services, a C programming interface in the Audio Toolbox framework, which is part of Core Audio. An audio queue is a software object you use for recording or playing audio.
Apple Developer Documentation
https://developer.apple.com/documentation/coreaudiotypes/audiotimestamp
A set of flags indicating which representations of the time are valid; see Audio Time Stamp Flags and Audio Time Stamp Flag Combination Constant. The host machine's time base (see CoreAudio/HostTime.h ). The ratio of actual host ticks per sample frame to the nominal host ticks per sample frame. Pads the structure out to force an even 8-byte ...
SQL Timestamp | Top 5 Examples to Implement of SQL …
https://www.educba.com/sql-timestamp/
Timestamp is a data type and function in Standard Structured Query Language (SQL) that lets us store and work with both date and time data values, usually without specified time zones. The timestamp has a storage size of 8 bytes that can accept date and time values ranging from 4713 BC and 294276 AD and provides a resolution of 1 microsecond or ...
iOS音频系列(三)--AudioQueue - 简书
https://www.jianshu.com/p/5d165bf2233d
The recording process. In step 1 , recording begins. The audio queue fills a buffer with acquired data. In step 2, the first buffer has been filled. The audio queue invokes the callback, handing it the full buffer (buffer 1). The callback (step 3) writes the contents of the buffer to an audio file. At the same time, the audio queue fills ...
Technical Q&A QA1643: Audio Host Time On iOS
https://developer.apple.com/library/archive/qa/qa1643/_index.html
A: While the best way to work with host time on iOS is using the CAHostTimeBase helper class, iOS developers may simply call mach_absolute_time to retrieve the current host time. Listing 1 Getting the current host time. The other important component of the host time is the frequency or timebase. By using the mach_timebase_info structure and ...
有画面无声音 · Issue #2729 · bilibili/ijkplayer · GitHub
https://github.com/Bilibili/ijkplayer/issues/2729
刚开始播放一个影片的时候锁屏, 然后解锁, 这个时候有一定的概率出现有画面无声音的情况 log如下: [IJKFFMoviePlayerController.m:411 ...
AudioTrack.GetTimestamp(AudioTimestamp) Method (Android ...
https://docs.microsoft.com/en-us/dotnet/api/android.media.audiotrack.gettimestamp
If a timestamp is available, the AudioTimestamp instance is filled in with a position in frame units, together with the estimated time when that frame was presented or is committed to be presented. In the case that no timestamp is available, any supplied instance is left unaltered. A timestamp may be temporarily unavailable while the audio ...
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