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Re[SOLVED]: Distorted Audio Playback in 10.2.3?
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Re[SOLVED]: Distorted Audio Playback in 10.2.3?


  • Subject: Re[SOLVED]: Distorted Audio Playback in 10.2.3?
  • From: Lance Drake <email@hidden>
  • Date: Mon, 26 Jul 2004 09:25:31 -0600

After I looked at the 'UsingAudioConverter.cpp' example code that came with the December 2001 ProjectBuilder installation, it was obvious what needed to be changed. Basically, I had to notice which version of the OS was currently running and vector to a different proc to service the AudioConverterFillBuffer call. The only difference in the args (other than order) was the fact that the older interface specifically wanted an actual pointer to the buffer. The last hurdle was to notice that the FormatFlags in my 10.2.3 version were sporting one extra-bit (big-endian) that was not present in the 10.2.8 version. Forcing that bit down caused the sound to immediately become pristine clean.

Well - once again, I am SO glad to be a Mac developer. Normally, I am writing various Apple lists and asking for assistance with some of these more arcane issues. It was a good feeling to get to Monday morning and not have to write a status report that included something along the lines of, "What happened was..." or some other pitiful excuse why no forward progress was made.

My congrats to the Mac audio folks on the excellent architecture, docs, and example code.

Onward and Upward!

Lance Drake
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