On 2018-05-24 15:03, Joe White wrote:
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'.
have a look again.
in the middle of the patch, i use soundfiler's right outlet (available
since PD 0.48, so make sure you are using this !) to get the file's
samplerate, even though it is just reading 1 sample of it. so, no need
to load the whole thing.
the left part of the patch gives you the file's length in samples, which
you can then re-calculate (using the file's samplerate) to ms or
whatever you need.
yes, the left outlet always only puts out 1 or 0, which i use to narrow
down the last valid sample position, which is then the file's length in
samples (endpoint).
i send the patch again to illustrate what i mean (unless i misunderstood
something)
best
oliver
Cheers,
Joe
On 12 May 2018 at 19:37, Alexandre Torres Porres <[email protected]>
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 [1]
2018-05-12 14:06 GMT-03:00 oliver <[email protected]>:
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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Links:
------
[1] https://github.com/pure-data/pure-data/pull/193
[2] https://lists.puredata.info/listinfo/pd-list
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