[fluid-dev] How to change settings (Reverb, Chorus, Gain, Bank) while Fluidsynth is running as a server (no shell)?
Hello everyone, first of all: a BIG, BIG THANK YOU to everyone here for Fluidsynth. It's a wonderful application, I like and use it a lot! I'm running Fluidsynth 1.1.6 on a small Arm board running Linux (something like a Cubieboard. Say a RaspPi on steroids). I recompiled everything to gain as much performances as possible, and am really happy about it (175 MB of SF2, 128 voices, 21ms latency and hardly breaks a sweat!). My question. hoping not to waste too much of your time. I'm running Fluidsynth in unattended Server mode ( -s ): the ARM board is headless and connected to a MIDI input (master keyboard and/or sequencer). I'd like to change some Fluidsynth settings "on the fly": - without resorting to the integrated shell (because I can't use it: headerless board without keypad) - without having to send MIDI commands using my MIDI keyboard (because it's very complicated with my model) - without restarting Fluidsynth In particular, I'd like to change: gain (-g) reverb (-R) chorus (-C) General MIDI bank So I was thinking of a shell script or C program I may write, triggered by an appropriate physical input (I can do that, I have plenty GPIOs on the board). The program/script should "talk" to Fluidsynth server and change some settings in realtime, without restarting it (a brief pause is OK). I've read the documentation, and from what I gather, it should be somehow possible using Fluidsynth API via libfluidsynth. But every example I've found creates a new Synth before setting parameters, etc. I don't want to create a new synth: I only want to change the settings of the Fluidsynth server which is already running. Is it possible? Any hint, code fragment...? Thanks a lot for your patience. :-) Best regards, Fernando Invita i tuoi amici e Tiscali ti premia! Il consiglio di un amico vale più di uno spot in TV. Per ogni nuovo abbonato 30 € di premio per te e per lui! Un amico al mese e parli e navighi sempre gratis: http://freelosophy.tiscali.it/ ___ fluid-dev mailing list fluid-dev@nongnu.org https://lists.nongnu.org/mailman/listinfo/fluid-dev
[fluid-dev] R: Re: How to change settings (Reverb, Chorus, Gain, Bank) while Fluidsynth is running as a server (no shell)?
Hello, thanks a lot for your support! >The first thing that comes to mind, without having to do any programming, >is to use the built in FluidSynth TCP/IP server (a command line switch >enables this). My board has no network, but I could use the internal localhost: fluidsynth tcp server would listen on 127.0.0.1 and my script, running locally, could use netcat to talk to the appropriate port. A dummy network, that is. But, I did not find any documentation about fluidsynth tcp server: nothing in the man page, nothing in the html document. :( So I don't know about commands, message formats, settings, etc. :( I was hoping that, for example (libfluidsynth doc): fluid_settings_setstr (settings, "some_parameter", "some_value"); could apply to an existing (running) synth, without having to do synth = new_fluid_synth(settings); But it seems that there's nothing like a synth = open_running_fluid_synth() :-( >Nice to hear about your results with the ARM platform you are using. I've >been wanting to create a stand alone FluidSynth device for a while myself. >It's great that embedded systems have reached a high enough level, power >wise, to work as well as you are reporting and with floating point units to >make this possible. Yes, these new dev boards are really powerful. The one I'm using has a Allwinner A20 (dual-CortexA7 @ 900MHz) and 1GB of DDR3 RAM. I found it's useful to recompile everything with GCC 4.7.2, because it supports specific ARM Cortex optimizations and auto-vectorialization using the NEON SIMD unit; you can gain a nice speed boost. My CFLAGS are '-march=armv7-a -mtune=cortex-a7 -ffast-math - mfpu=neon-vfpv4 -Ofast' Fernando >On Aug 11, 2013 8:16 AM, "fcare...@tiscali.it" wrote: > >> Hello everyone, >> >> first of all: a BIG, BIG THANK YOU to everyone here for Fluidsynth. >> It's a wonderful application, I >> like and use it a lot! >> >> I'm running Fluidsynth 1.1.6 on a small Arm board running Linux (something >> like a Cubieboard. >> Say a RaspPi on steroids). >> I recompiled everything to gain as much performances as possible, and >> am really happy about >> it (175 MB of SF2, 128 voices, 21ms latency and >> hardly breaks a sweat!). >> >> My question. hoping not to waste too much of >> your time. >> >> I'm running Fluidsynth in unattended Server mode ( -s ): the ARM board >> is headless and connected to a MIDI >> input (master keyboard and/or >> sequencer). >> >> I'd like to change some Fluidsynth settings "on the fly": >> >> - without >> resorting to the integrated shell (because I can't use it: headerless >> board without keypad) >> - without having to send >> MIDI commands using my MIDI keyboard (because it's very >> complicated with my model) >> - without restarting Fluidsynth >> >> In >> particular, I'd like to change: >> gain (-g) >> reverb (-R) >> chorus (-C) >> General MIDI bank >> >> So I was thinking of a shell >> script or C program I may write, >> triggered by an appropriate physical input (I can do that, I have >> plenty GPIOs on the >> board). >> The program/script should "talk" to Fluidsynth server and change some >> settings in realtime, without restarting >> it (a brief pause is OK). >> >> I've read the documentation, and from what I gather, it should be somehow >> possible using >> Fluidsynth API via libfluidsynth. >> But every example I've found creates a new Synth before setting >> parameters, etc. >> I >> don't want to create a new synth: I only want to change the settings of >> the Fluidsynth server which is already running. >> >> >> Is it possible? >> Any hint, code fragment...? >> >> Thanks a lot for your patience. :-) >> >> Best regards, >> >> Fernando >> >> >> Invita i tuoi amici e Tiscali ti premia! Il consiglio di un amico vale più >> di uno spot in TV. Per ogni nuovo abbonato 30 € di premio per te e per lui! >> Un amico al mese e parli e navighi sempre gratis: >> http://freelosophy.tiscali.it/ >> >> ___ >> fluid-dev mailing list >> fluid-dev@nongnu.org >> https://lists. nongnu.org/mailman/listinfo/fluid-dev >> > Invita i tuoi amici e Tiscali ti premia! Il consiglio di un amico vale più di uno spot in TV. Per ogni nuovo abbonato 30 € di premio per te e per lui! Un amico al mese e parli e navighi sempre gratis: http://freelosophy.tiscali.it/ ___ fluid-dev mailing list fluid-dev@nongnu.org https://lists.nongnu.org/mailman/listinfo/fluid-dev
[fluid-dev] R: Re: How to change settings (Reverb, Chorus, Gain, Bank) while Fluidsynth is running as a server (no shell)?
>All of these things can be controlled via MIDI messages, so why don't you >use the amidi command line app to script the messages, and just develop >your little app to take input from your GPIOs and fire those scripts? That's another great idea! Two great suggestions in a few minutes, thanks Graham and Element Green. Now I just have to look for the appropriate MIDI commands. Just a doubt: are you sure fluidsynth's "internal gain" ( -g [0.2-1000.0]) is controlled by a MIDI command? I thought it was an internal setting, like a pre-amplification of the mixed voices just before sending the result to the audio device. Thanks again, people. :-) Fernando > >On Sunday, August 11, 2013, fcarello@tiscali. it wrote: > >> Hello everyone, >> >> first of all: a BIG, BIG THANK YOU to everyone here for Fluidsynth. >> It's a wonderful application, I >> like and use it a lot! >> >> I'm running Fluidsynth 1.1.6 on a small Arm board running Linux (something >> like a Cubieboard. >> Say a RaspPi on steroids). >> I recompiled everything to gain as much performances as possible, and >> am really happy about >> it (175 MB of SF2, 128 voices, 21ms latency and >> hardly breaks a sweat!). >> >> My question. hoping not to waste too much of >> your time. >> >> I'm running Fluidsynth in unattended Server mode ( -s ): the ARM board >> is headless and connected to a MIDI >> input (master keyboard and/or >> sequencer). >> >> I'd like to change some Fluidsynth settings "on the fly": >> >> - without >> resorting to the integrated shell (because I can't use it: headerless >> board without keypad) >> - without having to send >> MIDI commands using my MIDI keyboard (because it's very >> complicated with my model) >> - without restarting Fluidsynth >> >> In >> particular, I'd like to change: >> gain (-g) >> reverb (-R) >> chorus (-C) >> General MIDI bank >> >> So I was thinking of a shell >> script or C program I may write, >> triggered by an appropriate physical input (I can do that, I have >> plenty GPIOs on the >> board). >> The program/script should "talk" to Fluidsynth server and change some >> settings in realtime, without restarting >> it (a brief pause is OK). >> >> I've read the documentation, and from what I gather, it should be somehow >> possible using >> Fluidsynth API via libfluidsynth. >> But every example I've found creates a new Synth before setting >> parameters, etc. >> I >> don't want to create a new synth: I only want to change the settings of >> the Fluidsynth server which is already running. >> >> >> Is it possible? >> Any hint, code fragment...? >> >> Thanks a lot for your patience. :-) >> >> Best regards, >> >> Fernando >> >> >> Invita i tuoi amici e Tiscali ti premia! Il consiglio di un amico vale più >> di uno spot in TV. Per ogni nuovo abbonato 30 € di premio per te e per lui! >> Un amico al mese e parli e navighi sempre gratis: >> http://freelosophy.tiscali.it/ >> >> ___ >> fluid-dev mailing list >> fluid-dev@nongnu.org >> https://lists.nongnu.org/mailman/listinfo/fluid-dev >> > Invita i tuoi amici e Tiscali ti premia! Il consiglio di un amico vale più di uno spot in TV. Per ogni nuovo abbonato 30 € di premio per te e per lui! Un amico al mese e parli e navighi sempre gratis: http://freelosophy.tiscali.it/ ___ fluid-dev mailing list fluid-dev@nongnu.org https://lists.nongnu.org/mailman/listinfo/fluid-dev
[fluid-dev] R: Re: Re: How to change settings (Reverb, Chorus, Gain, Bank) while Fluidsynth is running as a server (no shell)?
>If you run FluidSynth with the -s switch it will start up the TCP/IP >server on port 9800 by default (the shell.port setting controls this). > When making connections to this port (using telnet, netcat, a TCP/IP >socket, etc) it has the same format as the standard FluidSynth console >shell. Excellent! Many thanks to everyone!! Fernando Invita i tuoi amici e Tiscali ti premia! Il consiglio di un amico vale più di uno spot in TV. Per ogni nuovo abbonato 30 € di premio per te e per lui! Un amico al mese e parli e navighi sempre gratis: http://freelosophy.tiscali.it/ ___ fluid-dev mailing list fluid-dev@nongnu.org https://lists.nongnu.org/mailman/listinfo/fluid-dev
