[PD] [soundfile_info] made with vanilla (was: Re: Using externals with libpd on Windows)

[Joe White]

Hey Oliver,

This is a neat trick, however for my purposes [soundfle_info] was being
used to extract both the sample rate and sample length to calculate the
duration of the file.

Looks like in order to switch to [soundfiler] I'd have to load the whole
file to memory regardless, as the `-skip 1` flag means the left outlet
(sample length) of [soundfiler] only outputs '1'.

Cheers,
Joe

On 12 May 2018 at 19:37, Alexandre Torres Porres <porres at gmail.com> wrote:

> a new flag for [soundfiler] will make this easier without the need of a
> dummy buffer
>
> see https://github.com/pure-data/pure-data/pull/193
>
> 2018-05-12 14:06 GMT-03:00 oliver <oliver at klingt.org>:
>
>> Joe White wrote:
>>
>>> Hi all,
>>>
>>> I recently spent a bit of time tracking down why a patch wasn't loading
>>> a couple of externals in a windows application that embeds libpd.
>>>
>>> The patch was using /vbap/ [0] and /soundfile_info/ from iemlib [1].
>>>
>>
>> hi,
>>
>> just the other night i was hacking together a [sound_file] info
>> alternative with purely vanilla objects WITHOUT loading an entire file into
>> RAM.
>>
>> the method is basically to use [soundfiler] to load 1 sample of a file
>> into a table with a -skip message, and recalculate the skip position until
>> [soundfiler]'s left outlet outputs 1 (instead of 0).
>>
>> all of [soundfile_info]'s other values are also output from
>> [soundfiler]'s right outlet as of PD version 0.48.
>>
>> it takes a tad longer than [soundfile_info] to output the soundfile's
>> length, but it's acceptable imho. plus you can use .aiff too !
>>
>> best
>>
>> oliver
>>
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