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notes.txt
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notes.txt
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flext - C++ layer for Max/MSP and pd (pure data) externals
Copyright (c) 2001-2023 Thomas Grill (gr@grrrr.org)
For information on usage and redistribution, and for a DISCLAIMER OF ALL
WARRANTIES, see the file, "license.txt," in this distribution.
----------------------------------------------------------------------------
VARIOUS NOTES:
Platform specific:
- Pd does not allow signal and message to go into the same inlet (except leftmost inlet)
- Pd: with DSP objects all float messages to the leftmost inlet are converted to signal
Restrictions in compatibility mode:
- Max allows only 9 float/int inlets
Porting to new compilers/platforms:
- enums must be int-sized!!!
- compiler must support bool type
- an STL implementation must exist
- C++ exceptions and RTTI must be enabled
----------------------------------------------------------------------------
KNOWN BUGS:
- Some few external libraries have troubles with flext's global new and delete overloadings.
In these cases one can switch back to the C library memory operators by defining the FLEXT_NOGLOBALNEW macro before
inclusion of the flext.h header file (e.g. as a -D compiler option)
- Pd: floats into the leftmost inlet of DSP objects can't be used as messages
even if there's no signal inlet at all
----------------------------------------------------------------------------
TODO LIST:
- optimizations for object initialization and messaging
- speed up message handling (usage of other containers?)
- SIMD for gcc
- lock-free code for old AMD 64-bit architectures
- update documentation
- add log messages for debugging version
- use Pd's t_float and t_int types (or comparable for 32-bit safety)
- add double handlers
- add signal in/out connection query function
- support for Max qelem style
- flext::post and flext::error should print via a worker thread (and should be unlimited in characters)
- manage running threads individually (stop, isrunning?, priority etc.)
----------------------------------------------------------------------------
TESTS TO DO:
- Pd: problems with timed buffer redrawing (takes a lot of cpu time)
- hard thread termination upon object destruction doesn't seem to work properly -> crash
- Max rounding bug ... buffer resize could be one sample less!
- Pd: figure out what "pointer" messages do and whether they are correctly implemented in flext
- Max buffer~ resize: flext_base::buffer::Frames(): must we use buffer or system sample rate?
- check whether m_dsp gets called upon deletion of a used buffer (Pd and MaxMSP may behave differently).
-> Pd does call m_dsp, Max/MSP does not