[FFmpeg-devel] [PATCH v2]libavfilter/asrc_atone.c : generate algorithmic music

[Ashutosh Pradhan]

On Mon, Aug 17, 2020 at 4:37 PM Nicolas George <george at nsup.org> wrote:

> Ashutosh Pradhan (12020-08-17):
> > I have provided the sample for  $ ./ffplay -f lavfi -i atone
> > in the folder
> >
> https://drive.google.com/drive/folders/1manne188m5T-7wWZb7ZJBLZasLmsX05i?usp=sharing
>
> Thank you. That was more helpful.
>
> Honestly, this is not "nice", it is just boring. Which is not your
> fault: you could not hope to achieve in a summer what eludes years-long
> PhD theses in musicology and artificial intelligence. The project was as
> it is, and you seem to have more or less succeeded to implement it.
> Variations of rhythm would have been nice, though.
>
> But the fact remains that this is of no practical use. It is of no use
> to just listen to and enjoy, and since it uses an external library it is
> of no use for testing. (This project seems to be based on an old
> proposal of mine, with the goal to have a varied and somewhat realistic
> source for audio testing. But testing requires we trust the source is
> bit-exact.)
>
> Since you know the API best, could you say in a few words how hard it
> would be to get rid of fluidsynth and use an internal synthesizer
> instead?
>
> But in any case, your most urgent matter at hand is this:
>
> > > $ ./ffmpeg_g -lavfi atone /tmp/atone.ogg
> ...
> > > zsh: segmentation fault  ./ffmpeg_g -lavfi atone /tmp/atone.ogg
>
I am unable to understand the cause of this error. Are you using sdl2 as
the audio driver?

>
> Because we definitely cannot accept a patch that segfaults like that.
>
> Regards,
>
> --
>   Nicolas George
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