96 lines
4.7 KiB
Markdown
96 lines
4.7 KiB
Markdown
|
# JUCE + xtc examples
|
|||
|
|
|
|||
|
|
These optional examples use an external **JUCE 9.0.4** checkout (qualified
|
|||
|
|
revision `3fb5cbc0340758596dac39f7c8de47d562b4896e`). JUCE is AGPLv3/commercial;
|
|||
|
|
a commercial licence may be required for distribution. Read
|
|||
|
|
[the integration/license details](../../docs/JUCE.md). Original xtc example code
|
|||
|
|
is MIT; JUCE and combined binaries retain their applicable licence obligations.
|
|||
|
|
No SDK or linked binary is copied into normal xtc packages.
|
|||
|
|
|
|||
|
|
## Build and test (Linux)
|
|||
|
|
|
|||
|
|
Supply JUCE explicitly, for example in `/your/path/JUCE`. With CMake >= 3.25,
|
|||
|
|
GNU Make, a C/C++17 toolchain and JUCE's Linux development prerequisites:
|
|||
|
|
|
|||
|
|
```sh
|
|||
|
|
make JUCE_ROOT=/your/path/JUCE juce-examples
|
|||
|
|
make JUCE_ROOT=/your/path/JUCE test-juce
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
The build never downloads JUCE, installs dependencies or copies plugins into
|
|||
|
|
user plugin directories. It builds its own C99 PIC archive with JACK/FLTK disabled
|
|||
|
|
under `build/juce/c-core`. `test-juce` also requires Xvfb and runs the processor
|
|||
|
|
and JUCE-host checks, then loads the built instrument through xtc's C VST3 host.
|
|||
|
|
Normal `make`, `make gui` and `make test` remain JUCE-independent.
|
|||
|
|
|
|||
|
|
Build products:
|
|||
|
|
|
|||
|
|
- `build/juce/XtcJuceSynth_artefacts/Release/VST3/xtc JUCE Synth.vst3`
|
|||
|
|
- `build/juce/XtcJuceSynth_artefacts/Release/Standalone/xtc JUCE Synth`
|
|||
|
|
- `build/juce/xtc-juce-render_artefacts/Release/xtc-juce-render`
|
|||
|
|
|
|||
|
|
Set `BUILD_DIR=...` to move the main build root, or `JUCE_BUILD_DIR=...` to select
|
|||
|
|
only the SDK example build directory.
|
|||
|
|
|
|||
|
|
## Play and shape Soft Keys
|
|||
|
|
|
|||
|
|
```sh
|
|||
|
|
"./build/juce/XtcJuceSynth_artefacts/Release/Standalone/xtc JUCE Synth"
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
The standalone opens JUCE's audio/MIDI device interface. Select the intended
|
|||
|
|
output and MIDI inputs explicitly. Play its on-screen keyboard or a selected
|
|||
|
|
MIDI source. Enable **Filter + reverb**, adjust Tone/Room/Mix, and set Output.
|
|||
|
|
Save/load `.xtcjuce` presets; Panic clears held voices. The native editor is also
|
|||
|
|
available when loading the VST3 into a host with editor support. xtc's existing
|
|||
|
|
C host supports its default instrument configuration, without the JUCE editor.
|
|||
|
|
Building/testing these examples does not open a physical audio device. Running
|
|||
|
|
the standalone may open the system default device; hardware playback is not
|
|||
|
|
inferred from successful builds.
|
|||
|
|
|
|||
|
|
## Render a chord or MIDI file without an audio server
|
|||
|
|
|
|||
|
|
```sh
|
|||
|
|
./build/juce/xtc-juce-render_artefacts/Release/xtc-juce-render --render /absolute/new-demo.wav
|
|||
|
|
./build/juce/xtc-juce-render_artefacts/Release/xtc-juce-render --render /absolute/new-song.wav --midi /absolute/song.mid
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
The output is 48 kHz stereo float32 WAV with filter/reverb enabled and -6 dB
|
|||
|
|
output. The default renders a staggered C-major chord. MIDI input is type 0/1
|
|||
|
|
PPQN, including its tempo map, merged stably across tracks. Supported note,
|
|||
|
|
CC and bend messages use rounded sample positions; other messages are ignored.
|
|||
|
|
Input limits: 4 MiB, 100000 supported events and ten minutes of event timestamps.
|
|||
|
|
The renderer allows half a second after the last event, forces all-notes-off,
|
|||
|
|
then renders a fixed three-second tail. It does not derive exact plugin tails.
|
|||
|
|
|
|||
|
|
Output is written to a same-directory temporary file and atomically linked to
|
|||
|
|
an absent destination. Existing files are preserved, including a concurrent
|
|||
|
|
creator at publication. Errors remove the temporary and publish no output.
|
|||
|
|
On a machine without an X server, prefix commands with `xvfb-run -a`.
|
|||
|
|
|
|||
|
|
## Inspect/host a trusted VST3
|
|||
|
|
|
|||
|
|
```sh
|
|||
|
|
./build/juce/xtc-juce-render_artefacts/Release/xtc-juce-render --inspect-vst3 /absolute/Plugin.vst3
|
|||
|
|
./build/juce/xtc-juce-render_artefacts/Release/xtc-juce-render --host-check "$PWD/build/juce/XtcJuceSynth_artefacts/Release/VST3/xtc JUCE Synth.vst3"
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
Inspection loads only the named module, enumerates its classes and instantiates
|
|||
|
|
them to list parameters and channels. It executes trusted code and is not an
|
|||
|
|
isolated scanner. `--host-check` is specific to the example: it checks five
|
|||
|
|
parameters, opaque state restoration and actual MIDI processing through JUCE's
|
|||
|
|
VST3 host. These operations do not start an audio device.
|
|||
|
|
|
|||
|
|
## Regression checks and an actual editor image
|
|||
|
|
|
|||
|
|
```sh
|
|||
|
|
xvfb-run -a ctest --test-dir build/juce --output-on-failure
|
|||
|
|
xvfb-run -a ./build/juce/xtc-juce-render_artefacts/Release/xtc-juce-render --snapshot /absolute/new-editor.png
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
The processor test checks exact C-synth output, note timing, variable blocks,
|
|||
|
|
mono/stereo, reset, host/GUI MIDI overflow, preset recovery and effect processing.
|
|||
|
|
The snapshot command renders the actual editor to a 1560 × 980 PNG and checks
|
|||
|
|
that it can close/reopen without starting audio hardware. It refuses to overwrite
|
|||
|
|
a destination. Windows/macOS, alternate plugin formats and physical devices have
|
|||
|
|
not been qualified. See [Phase 107](../../docs/ROADMAP.md) for recorded results.
|