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169 lines
8.1 KiB
169 lines
8.1 KiB
#! /usr/bin/env python3
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# -*- coding: utf-8 -*-
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"""
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Copyright 2022, Nils Hilbricht, Germany ( https://www.hilbricht.net )
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This file is part of the Laborejo Software Suite ( https://www.laborejo.org ),
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This application is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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"""
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import logging; logger = logging.getLogger(__name__); logger.info("import")
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#Python Standard Lib
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#Template Modules
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from template.calfbox import cbox
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from template.engine.input_midi import MidiProcessor
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class Auditioner(object):
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"""
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A special instrument class.
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Has access to all libraries and can quickly change its sounds.
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It has one midi input and stereo output.
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Music output does not contribute to global mixer summing ports.
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This is another instance of the instrument library. It will not touch any CC settings
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or filters of the real instrument, because there is a chance that this will change the sound
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of the real instrument by accident.
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"""
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def __init__(self, parentData):
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self.parentData = parentData
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self.cboxMidiPortUid = None
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self.midiInputPortName = "Auditioner"
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self.cboxPortname = cbox.JackIO.status().client_name + ":" + self.midiInputPortName
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self.idKey = None
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#Calfbox. The JACK ports are constructed without samples at first.
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self.scene = cbox.Document.get_engine().new_scene()
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self.scene.clear()
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layer = self.scene.add_new_instrument_layer(self.midiInputPortName, "sampler") #"sampler" is the cbox sfz engine
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self.scene.status().layers[0].get_instrument().engine.load_patch_from_string(0, "", "", "") #fill with null instruments
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self.instrumentLayer = self.scene.status().layers[0].get_instrument()
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self.program = None #return object from self.instrumentLayer.engine.load_patch_from_tar
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self.scene.status().layers[0].set_ignore_program_changes(1) #TODO: ignore different channels. We only want one channel per scene/instrument/port. #TODO: Add generic filters to filter out redundant tasks like mixing and panning, which should be done in an audio mixer.
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#self.instrumentLayer.engine.set_polyphony(int)
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#Create Stereo Audio Ouput Ports
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#Connect to our own pair but also to a generic mixer port that is in Data()
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jackAudioOutLeft = cbox.JackIO.create_audio_output(self.midiInputPortName+"_L")
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jackAudioOutRight = cbox.JackIO.create_audio_output(self.midiInputPortName+"_R")
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self.outputMergerRouter = cbox.JackIO.create_audio_output_router(jackAudioOutLeft, jackAudioOutRight)
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self.outputMergerRouter.set_gain(-3.0)
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instrument = layer.get_instrument()
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instrument.get_output_slot(0).rec_wet.attach(self.outputMergerRouter) #output_slot is 0 based and means a pair. Most sfz instrument have only one stereo pair. #TODO: And what if not?
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#Create Midi Input Port
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self.cboxMidiPortUid = cbox.JackIO.create_midi_input(self.midiInputPortName)
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cbox.JackIO.set_appsink_for_midi_input(self.cboxMidiPortUid, True) #This sounds like a program wide sink, but it is needed for every port.
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cbox.JackIO.route_midi_input(self.cboxMidiPortUid, self.scene.uuid)
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#Always on
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self.midiProcessor = MidiProcessor(parentInput = self) #works through self.cboxMidiPortUid
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self.midiProcessor.register_NoteOn(self.triggerNoteOnCallback)
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self.midiProcessor.register_NoteOff(self.triggerNoteOffCallback)
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#self.midiProcessor.notePrinter(True)
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self.parentData.parentSession.eventLoop.fastConnect(self.midiProcessor.processEvents)
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@property
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def volume(self)->float:
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return self.outputMergerRouter.status().gain
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@volume.setter
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def volume(self, value:float):
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if value > 0:
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value = 0
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elif value < -21: #-21 was determined by ear.
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value = -21
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self.outputMergerRouter.set_gain(value)
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def loadInstrument(self, idKey, tarFilePath, rootPrefixPath:str, variantSfzFileName:str, keySwitchMidiPitch:int):
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"""load_patch_from_tar is blocking. This function will return when the instrument is ready
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to play.
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"""
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logger.info(f"Start loading samples for auditioner {variantSfzFileName}")
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#help (self.allInstrumentLayers[self.defaultPortUid].engine) #shows the functions to load programs into channels etc.
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#newProgramNumber = self.instrumentLayer.engine.get_unused_program()
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programNumber = 0
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name = variantSfzFileName
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self.program = self.instrumentLayer.engine.load_patch_from_tar(programNumber, tarFilePath, rootPrefixPath+variantSfzFileName, name)
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self.currentVariant = variantSfzFileName
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self.idKey = idKey
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if keySwitchMidiPitch is None:
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self.currentKeySwitch = None
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else:
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self.currentKeySwitch = keySwitchMidiPitch
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self.scene.send_midi_event(0x90, keySwitchMidiPitch, 64)
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logger.info(f"Finished loading samples for auditioner {variantSfzFileName}")
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def unloadInstrument(self):
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"""Unlike instruments disable this will not remove the midi and audio ports.
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But it will remove the loaded instruments, if any, from ram"""
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self.scene.status().layers[0].get_instrument().engine.load_patch_from_string(0, "", "", "") #fill with null instruments, hopefully replacing the loaded sfz data.
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self.currentVariant = None
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self.currentKeySwitch = None
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self.idKey = None
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def getAvailablePorts(self)->dict:
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"""This function queries JACK each time it is called.
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It returns a dict with two lists.
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Keys "hardware" and "software" for the type of port.
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"""
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result = {}
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hardware = set(cbox.JackIO.get_ports(".*", cbox.JackIO.MIDI_TYPE, cbox.JackIO.PORT_IS_SOURCE | cbox.JackIO.PORT_IS_PHYSICAL))
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allPorts = set(cbox.JackIO.get_ports(".*", cbox.JackIO.MIDI_TYPE, cbox.JackIO.PORT_IS_SOURCE))
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software = allPorts.difference(hardware)
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result["hardware"] = sorted(list(hardware))
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result["software"] = sorted(list(software))
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return result
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def connectMidiInputPort(self, externalPort:str):
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"""externalPort is in the Client:Port JACK format
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If "" False or None disconnect all ports."""
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try:
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currentConnectedList = cbox.JackIO.get_connected_ports(self.cboxMidiPortUid)
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except: #port not found.
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currentConnectedList = []
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for port in currentConnectedList:
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cbox.JackIO.port_disconnect(port, self.cboxPortname)
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if externalPort:
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availablePorts = self.getAvailablePorts()
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if not (externalPort in availablePorts["hardware"] or externalPort in availablePorts["software"]):
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raise RuntimeError(f"Auditioner was instructed to connect to port {externalPort}, which does not exist")
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cbox.JackIO.port_connect(externalPort, self.cboxPortname)
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def triggerNoteOnCallback(self, timestamp, channel, pitch, velocity):
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"""args are: timestamp, channel, note, velocity.
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consider to change eventloop.slowConnect to fastConnect. And also disconnect in self.disable()"""
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if self.idKey and self.instrumentLayer:
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self.parentData.instrumentMidiNoteOnActivity(self.idKey, pitch, velocity)
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def triggerNoteOffCallback(self, timestamp, channel, pitch, velocity):
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"""args are: timestamp, channel, note, velocity.
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consider to change eventloop.slowConnect to fastConnect. And also disconnect in self.disable()"""
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if self.idKey and self.instrumentLayer:
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self.parentData.instrumentMidiNoteOffActivity(self.idKey, pitch, velocity)
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