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Project Goals

  • Sample accurate events
  • Similar node logic to Puredata
  • Separation of audio / graph maintenance
  • No clicking ever, for live patching etc (graph discontinuity is ok, as some graph changes will be impossible to mitigate - clicking due to priority inversion is not ok)
  • Zero allocation on audio thread
  • Simple / logical, and expressive file format (using json)
  • Dynamic loading of compiled externals
  • Sub-patches
  • Multi-patch definitions (define multiple patches in same file, reuse the patch locally)
  • Modern c++, make library as simple as possible.
  • Set values for nodes from external controls (UI etc)
  • Expressive and feature rich ABI for external / plugin c++ creation

[ PROJECT ROADMAP ]

[ V 0.1 ] Core Application & Basic Editor:

  • Platform:
    • SDL3 standalone application for MS Windows
  • Engine:
    • Event's with data pool (linked list of data atoms for RT safe transmutation)
    • Feedback loops (audio buffer sent to next cycle of graph)
    • Type in object names in canvas editor
    • Sub-patches
    • Patch Abstractions (load JSON patch as node)
    • Compiled Abstractions (plugins) - Full SDK
  • Basic Functionality:
    • Save, Load, and Save-as for patches
    • Basic undo/redo support
  • Editing Essentials:
    • Simple set of objects
    • Copy/Paste functionality (using JSON as the interchange format)
    • DnD to make new objects
    • All object params to be saved in patch
  • User Interface:
    • Central nested popup window for settings / about
    • Theme support
    • Initial Plugin View
    • Non-modal open/save system dialog
    • Tabbed editor (Load multiple patches) - not split-view
  • I/O Capabilities:
    • MIDI in/out
    • Audio in/out
    • Multichannel Audio in/out

[ V 0.2 ]

  • Make cross-platform: macOS, Linux, Windows

[ V 0.3 ]

  • CLAP plugin port

[ V 0.6 ]

  • Per-patch state (sample-rate & buffer-size)

[ V 0.7 ]

  • Refine plugin support (parameters etc)

[ V 0.8 ]

  • Support more plugin formats via CLAP wrapper

[ V 0.9 ]

  • Bug fixes, fix what is needed for release

[UI TODO]

  • Ping (Bang object) doesn't register mouse button down sometimes - (intermittent)
  • correctly delete - make a system to have a focused component, currently using the clicked component (which is not the same)
  • scale / position canvas - make a way for the canvas to have a viewport - per component scaling
  • scrollbars - needed for canavs and side panels etc
  • Icons - simple icons to start with
  • Load patch etc
  • Subpatches (in main JSON file - single use)
  • Subpatches (from external files - abstractions)
  • Desktop scale etc
  • Text entry (for object/nodes mainly)
  • Undo / Redo
  • Theme system
  • Canvas inside viewport
  • Plugin view
  • Select connections via lasso
  • Select multiple objects
  • Select multiple connections with shift-click
  • Basic focus system (We need to think more about this - what it means to gain focus? We still need to hover scroll components- but they wont have focus??) -- MAYBE??
    • We use a temporary focus system.
    • When there is a scroll event, we look at the current component's ancestors, and find who wants focus
    • If we don't find who wants focus we do nothing.
      • We also have an assignable focus system, which is what happens on mouse down - or when components request it.

[ENGINE TODO]

  • Improve oscillator for Triangle and Square. We need to use eblep (but with custom setup for each waveform)
  • Square oscillator needs to be able to change duty cycle, need to allow for this... wavetables?

NOTES

BUG! Duplicating / copying subpatches does not set the subpatches parent. We use a different code path here. So unify this system somehow to keep track of subpatch parents.

[UI] make delete work from a key pressed listener on the canvas itself

[ICONS] https://fluenticons.co/outlined/

[BUILD]

adding WIN32 will make the app build without terminal (for debugging)

PlugPatchStandalone target - use WIN32 to hide terminal (this is an SDL3 thing)

add_executable(PlugPatchStandalone WIN32 PatchformStandalone.cpp ${GRAPH_SOURCES} ${UI_SOURCES})

WORK LOG:

[issue] Comment object is currently a NOOP for the audioprocess. This is because we need to still keep the index updated correctly. Make it so the comment object (that has no way to communicate with the audio process anyway) doesn't get added to the audio process vector This will mean changing the way we sort/allocate ID's/index etc.

[issue] Text editor is a bit janky ATM, this need a large fix, (mainly for on-object text editing)

[issue] Use glaze for json handling (which will allow compile time etc) [comments] Explored using glaze, however currently glaze takes 2x as long to reflect json std::string to usable data I may be doing something wrong, investigate further. Glaze has been left in system to easily hookup

[issue] Currently we can only load one patch at a time, allow loading multiple patches. Assign each running patch the filename string that it came from

[issue]

Added ID recycling, but now object ID system does not work if the generated ID is connected from a previous ID.

eg: 0 [metro] 1 [cnt] 2 [if] 3 [if] 4 [if] 5 [if] 6 [osc] 7 [osc] 8 [osc] 9 [osc] 11 [env] 12 [env] 13 [env] 14 [aout] 10 [osc] <-- unreachable 15 [osc]

[fix] Make objectIDMap[finalID] equal the generated node ID