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Apple Developer Documentation
https://developer.apple.com/documentation/audiotoolbox/1503274-audiofilereadpackets
Memory that you allocate to hold the read packets. Determine an appropriate size by multiplying the number of packets requested (in the io Num Packets parameter) by the maximum (or upper bound for) packet size of the audio file. For uncompressed audio formats, a packet is …
iphone - I just don't get AudioFileReadPackets - Stack ...
https://stackoverflow.com/questions/2615056/i-just-dont-get-audiofilereadpackets
I've tried to write the smallest chunk of code to narrow down a problem. It's now just a few lines and it doesn't work, which makes it pretty clear that I have a fundamental misunderstanding of how...
Apple Developer Documentation
https://developer.apple.com/documentation/audiotoolbox/audio_file_services
This document describes Audio File Services, a C programming interface that enables you to read or write a wide variety of audio data to or from disk or a memory buffer. With Audio File Services you can: Create, initialize, open, and close audio files. Read and write audio files. Optimize audio files. Work with user data and global information.
AudioQueue in-memory playback example
https://www.py4u.net/discuss/1604915
The Audio Queue Services Programming Guide should give you the details you need but obviously is a bit lax on the specific example you are looking for. You just need to push the in-memory audio data through the output queue instead of the PCM data from the file via AudioFileReadPackets. I found a reasonable example of sound synthesis in the AudioQueue player callback in another …
How to fill my circle(CGContextAddArc) with a different color?
https://www.py4u.net/discuss/1356647
Answer #2: Remove the stroke related lines and use only fill related lines. CGContextRef context = UIGraphicsGetCurrentContext (); CGContextAddArc (context, 50, 50, 50, 0, 30, 0 ); //set the fill or stroke color CGContextSetRGBFillColor (context, 1, 0.5, 0.5, 1.0 ); //fill or draw the path CGContextDrawPath (context, kCGPathStroke); If you want ...
iphone利用AudioQueue播放音频文件(mp3,aac,caf,wav等) - 编程猎人
https://www.programminghunter.com/article/987876949/
iphone利用AudioQueue播放音频文件 (mp3,aac,caf,wav等) 最近在做iphone上的流媒体播放，需要用到播放音频流，参考了好多博客、网站，最终算是把这个比较难弄的问题解决了。. 这篇文章是播放音频文件的，我会专门用一篇文章来介绍如何用AudioQueue来播放raw pcm data ...
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