[Interest] QAudioDecoder on Mac : workaround to get it to work via GStreamer

[Hamish Moffatt]

On 31/07/18 06:52, René J.V. Bertin wrote:
> Hi,
>
> I discovered (with a suitable amount of dismay) that QAudioDecoder still
 doesn't work on Mac, and only a single person seems to have noticed this
 before
 (http://interest.qt-project.narkive.com/JTiX8LBR/qaudiodecoder-defaultserviceprovider-requestservice-no-service-found-for-org-qt-project-qt).

I wrote custom audio decoding for my application a few years back. I 
used the extended audio file services on Mac, which wasn't very 
difficult. 
https://developer.apple.com/documentation/audiotoolbox/extended_audio_file_services

I also wrote a version for Windows using the Media Foundation APIs, 
which was harder. I seem to recall some limitation with QAudioDecoder 
that made it easier to write a custom decoder, but I can't remember now.

We have our own device management and audio streaming code for both 
platforms dating back years, although we would probably use QtMultimedia 
if we were starting from scratch.


Hamish