[PD] share-mem lib

[IOhannes m zmoelnig]

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On 2013-02-25 15:54, Cyrille Henry wrote:
> on the other hand, pix_share_read / pix_share_write are dedicated
> to share pix data. but the id provide is not the shmid.

right, it is a hashed version of the shmid, in order to make it more
easily usable within Pd.

>> I'd like to use this to share pixes with veejay (a vjing tool
>> that runs on linux). Veejay wants YUV and can read/write from/to
>> shm. So it looks like communication can be done pretty easily.
>> (note there's also an OGRE plugin that uses shm).

the thing with shm is, that you are sharing raw memory.
just because multiple applications support reading/writing from/to
shared memory, doesn't necessarily mean that they can share data in a
meaningful way.
the applications have to interpret the raw memory in the same way in
order to make sense.

a standardized way for sharing videos between applications on linux is
the "v4l2loopback" virtual video device.

fgmasdr
IOhannes
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