Student: Bruno Buccolo
Mentor: Russell Ryan
Sometimes playing the right tracks at the right time in a perfect mix
is not enough. Users like to use effects/filters in their mix to squeeze
every bit of energy of a track, make creative mixes using filters, delay
beats to get funky, use reverb on vocals to fill the room and so on.
Mixxx can already host LADSPA plugins, however it lacks a user interface
for proper configuration since there must be a mapping between Mixxx controls
and LADSPA plugins.
I'm proposing not only designing a user interface for configuration of LADSPA
plugins, but also taking the effects on Mixxx to a whole new level. I'll create
Effects Units, that will have standard controls, so we only have to map MIDI once,
and then plug-in the desired effect in the effect unit to use them. The user
will also have the flexibility to choose how he's going to use these 2 effects units,
being able to use both on a channel, a unit per channel or even both on master.
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See diagrams, specificacions and screenies:
My Picasa-
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Two independent Effects Units for Mixxx
An Effect Unit will be loaded with the desired LADSPA Plugin
The input of a Effect Unit will be Channel 1, Channel 2 or Both
Effects Chaining should be possible (One Channel as input for two Effects Units)
An Effect Unit will have 4 Parameters and Wet&Dry that will correpond to the mapped ports of the LADSPA Plugin
All controls for the Effects Units can be MIDI Mapped
Abstraction of effects backend (ladspa only, for now)
Mapping of LADSPA Plugin's control ports to Effects Units parameters
Selection of plugin's Wet/Dry control port
Value range for control ports (Min ~ Max, Default)
Adding custom plugins downloaded from the internet (place on LADSPA_PATH?)
Save/Load Configuration
Code: Define code architecture
Code: Think about data structures to use
Code: Design uml diagram for the code architecture
Code: Backend abstraction layer
Code: Ladspa ←→ Effects Unit connector
Code: Enabling MIDI Mapping of Effects Units
Code: Study how to choose input for effects
GUI: Basic tab view for development only.
GUI: Display combobox with available effects
GUI: Load port names for the selected effect
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Code: Think about xml structure to save the presets
Code: Implement Load/Save xml
Code: Adding custom paths to plugins (really necessary?)
GUI: Basic preferences panel dialog
GUI: Load available LADSA Plugins into list
GUI: Load LADSPA Plugin's port names into combo boxes
GUI: Min, Max, Default values for each control port
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Select standard Plugins to be shipped
Create good presets for them
Carefully study how to give instructions for the
