applause2 - Luajit-based synthesizer based on a stream algebra

Age	Commit message (Collapse)	Author	Files	Lines
2016-01-03	preliminary (broken) client forking support	Robin Haberkorn	1	-8/+89

2015-12-31	support only LuaJIT and use some additional (insignificant) optimizations	Robin Haberkorn	1	-0/+8

2015-12-31	fixed potential segfaults in MIDI processing & 1-based channels	Robin Haberkorn	1	-11/+18
	* there are at most 128 different MIDI notes; mtof() will now also work for all of them * channels have origin 1 now in the public APIs. This is what most applications seem to use, so in order to avoid confusion it's probably a good idea to use it as well.
2015-12-31	implemented basic support for MIDI NOTE ON/OFF events	Robin Haberkorn	1	-28/+126
	* MIDIVelocityStream will report the velocities on a particular note. This can be used to build polyphonic instruments. * MIDINoteStream will report all possible notes on a particular channel. The velocity of the note last triggered is also encoded into the stream values. This can be used to build simple monophonic instruments. * Map bit methods to stream methods, e.g. Stream:band() Is especially useful for streams that encode multiple values into single integers for performance reasons. * mtof() and ftom() methods for converting from and to MIDI note numbers. mtof() is very efficient since its values are all precalculated in a lookup table. * fixed tostring() method for streams smaller than 1024 samples
2015-11-04	added simple support for MIDI CC commands	Robin Haberkorn	1	-2/+121
	* MIDICCStream provides a stream of CC values as if polled from the controller (this is emulated in applause.c)
2015-11-03	enforce minimum buffer size for lua<->realtime communication based on ↵	Robin Haberkorn	1	-2/+17
	jack_get_buffer_size()
2015-11-03	fixed semaphore for realtime<->lua thread synchronization	Robin Haberkorn	1	-8/+16

2015-11-03	allow Stream:play() to be interrupted by CTRL+C	Robin Haberkorn	1	-1/+35
	* more precisely, Stream:play() will now throw an error whenever the process receices SIGINT. * this allows us to interrupt long playbacks
2015-11-03	ring buffer size is configurable now via ./applause command-line parameter ↵	Robin Haberkorn	1	-9/+32
	in milliseconds * default buffer size: 100ms
2015-11-03	synchronize buffer access via System V semaphore	Robin Haberkorn	1	-10/+74
	* allows the Lua thread to block when the ringbuffer is full while keeping the realtime thread (jack_process()) realtime-safe. Hopefully :-) * since audio generation is usually faster than consumption (if you don't want to have buffer underruns), this fixes audio generation longer than BUFFER_SIZE (currently 1s)
2015-11-03	report buffer underruns	Robin Haberkorn	1	-6/+23

2015-04-11	stop garbage collector temporarily during play()	Robin Haberkorn	1	-1/+16
	This improves the real-time properties of sample generation since it avoids CPU spkikes. On the other hand, this may not be ideal as playing a long streams could have non-constant space requirements now. A proper solution would probably involve calling the garbage collector incrementally during the play() loop.
2015-04-11	added custom interactive Lua interpreter for evaluating applause expressions	Robin Haberkorn	1	-0/+274
	* implements Stream:play() using Jack as the audio backend