AUDIO
Source snapshot · 12 October 2026

RAVET licensing

Decision recorded on 8 October 2026: GPLv3 plus separate commercial licensing.

Topics in this guide

Open-source route

RAVET's first-party Rust and Python source, including its current tests and examples, is available under the GNU General Public License version 3 only (GPL-3.0-only). The full, unmodified licence text is in LICENSE. Workspace packages declare that identifier in Cargo metadata.

GPL permits commercial use. This route has no RAVET revenue ceiling or requirement to buy a commercial licence if the user complies with the GPL. Distribution of a combined product must satisfy applicable GPL requirements, including corresponding-source availability and recipients' licence rights. Making only the RAVET library source available does not automatically satisfy obligations for a combined plug-in or application. The precise boundary of separate works depends on the integration; this document grants no blanket exception for linking or plug-in hosting.

The commercial tier limits below do not modify the GPL or apply additional restrictions to users choosing it. Third-party dependencies retain their own licences and notices. This source-code policy does not grant trademark rights. No separate permissive licence has been selected for the current examples or future generated templates.

Commercial route

The owner approved the following launch pricing and commercial policy on 8 October 2026. A separate commercial agreement will permit proprietary distribution on its agreed terms. This document is not a commercial licence grant. Until an agreement is executed, this repository supplies the GPL route.

Tier Annual company revenue (USD) Approved launch price
Starter Up to and including $50,000 Free
Indie Above $50,000, up to and including $500,000 $199 per developer per year
Pro Above $500,000, with no upper limit $699 per developer per year

Prices are in USD, excluding applicable taxes. Exactly $50,000 qualifies for Starter; exactly $500,000 qualifies for Indie. Revenue is company-wide, rather than limited to RAVET-based products, measured over the previous twelve months at purchase or renewal. These bands identify the minimum qualifying tier.

Approved commercial policy

Commercial agreement draft

Commercial Licence Agreement — draft 0.1 contains the proposed contract and Order Form. It preserves the approved policy and lists additional drafting choices for owner and legal review. It is not an executed licence, and its proposed defaults have not been adopted merely by being drafted. The repository's GPL metadata and LICENSE remain unchanged.

Contract details still needed

The pricing and policy above are accepted; the final agreement still needs to specify:

Have the actual commercial agreement reviewed before offering it to customers. Do not introduce accounts, activation, telemetry, or runtime licence checks solely because this licensing decision exists.

Contributions and dependency selection

Before accepting external contributions intended for the commercial edition, establish contributor terms granting sufficient rights for both the GPL and commercial routes, including appropriate patent rights. A contributor may retain copyright while granting those permissions; copyright assignment is not inherently required. Keep contributor and provenance records.

A DCO sign-off certifies contribution origin and the right to submit under the stated licence; it is not, by itself, a grant of proprietary relicensing rights. Do not promise commercial permissions for contributed code without the rights to grant them.

Check each dependency's exact licence and linking/distribution obligations for both routes. GPL-compatible does not necessarily mean compatible with the commercial agreement. A third-party GPL component cannot simply be sold under RAVET's commercial terms without the necessary permission or replacement. Preserve required third-party notices and audit normal, build, development, vendored, and native dependencies before release.

The Cargo identifier describes the open-source licence currently supplied by this repository. Do not label it MIT OR Apache-2.0, GPL-3.0-or-later, or use an invented standard SPDX identifier for the unfinished commercial agreement. Keep publish = false until release preparation is intentionally completed.

Primary references

Optional local-font shaping and public test fixture

The default-disabled surface/umbrella text feature pins HarfRust 0.14.0 (MIT). Reviewed downloaded manifests for read-fonts 0.45.0/font-types 0.12.6, bitflags, smallvec, once_cell and stable_deref_trait declare MIT OR Apache-2.0; bytemuck and its derive declare Zlib OR Apache-2.0 OR MIT. Yoke/zerofrom and their derives declare Unicode-3.0; synstructure declares MIT. Locked proc-macro tooling retains its own notices. Preserve applicable dependency notices in both distribution routes; this scoped manifest review is not a release-wide licence audit.

The unmodified public Noto Sans Arabic fixture is SIL Open Font License 1.1, with complete OFL, copyright, upstream commit and hashes retained under the fixture directory. RAVET's first-party licence does not replace that font's terms. The fixture is reusable testing data, rather than a required product font; consumer fonts/assets and their separate permissions remain the consumer's responsibility.

The optional text feature also pins unicode-bidi 0.3.18 (MIT OR Apache-2.0), with its Unicode 16.0 tables and separate upstream notices. Selected unchanged public Unicode bidi vectors retain the complete Unicode License v3 and exact source/ hash under their fixture directory. These data terms remain separate from RAVET's first-party licence.

The optional text feature pins unicode-linebreak 0.1.5 (Apache-2.0), whose Unicode 15.0 line-opportunity data is separate from the bidi backend's Unicode 16.0 data. Its downloaded manifest and complete Apache-2.0 licence were reviewed; it declares no runtime dependencies. Preserve the applicable upstream notice in both distribution routes. This scoped dependency check is not a release-wide licence audit.

The optional text feature pins unicode-segmentation 1.13.3 (MIT OR Apache-2.0), with Unicode 17.0 extended-grapheme tables and no runtime dependencies. Its upstream manifest, copyright and complete MIT/Apache licence texts were reviewed; preserve applicable notices in both distribution routes. The separate line-break and bidi tables retain their earlier Unicode versions. The tiny synthetic ligature font fixture contains only first-party rectangular glyphs and a test substitution; no external font outlines or product assets are included. This is a scoped dependency check.

The default-disabled ravet-surface/postscript-outlines feature (selected by ravet-webview/postscript-fonts consumers and the tutorial postscript-fonts feature) pins skrifa 0.48.0 (MIT OR Apache-2.0) with default features off and std on. Its downloaded manifest and complete MIT (Fontations Developers) and Apache-2.0 licence texts were reviewed. Its selected runtime dependencies are the already reviewed read-fonts 0.45.0 and bytemuck; the optional core_maths dependency is not selected, and offline lock resolution adds only skrifa. The 31 OTF/TTF fixtures under the PostScript fixture directory are first-party authored test data; no installed or proprietary font bytes are included. See the skrifa notice. Preserve applicable notices in both distribution routes. This is a scoped dependency check, not a release-wide licence audit.

Loudness calibration provenance

The prepared calibrated loudness profile expresses its rational filter equations independently using mathematical calibration parameter facts attributed to Brecht De Man's author reference (MIT, copyright 2018 Brecht De Man). No external implementation body, dependency, coefficient table or programme fixture is copied. The complete author reference notice is retained in the Signal third-party notices for provenance; standards documents are linked as mathematical references, not redistributed.

Embedded parameter math

Foundation pins pure-Rust libm 0.2.16 (MIT) for parameter mappings without std. Its downloaded Cargo manifest and upstream licence were reviewed; preserve its MIT notice when distributing embedded or desktop dependencies. Default desktop math still uses std. This scoped dependency review does not replace the complete release dependency audit or grant hardware compatibility.

ravet-native-dsp depends directly on the same locked libm 0.2.16 for no_std Scalar square root, with default features disabled exactly as in Foundation. Its downloaded manifest declares MIT only, and its LICENSE.txt is the MIT licence. No new package is resolved; preserve the same MIT notice.

Optional Ogg Vorbis encoding

The default-disabled audio-file vorbis-encode feature pins vorbis_rs 0.5.6 (BSD-3-Clause) with defaults disabled, using caller-selected Ogg stream serials. Its safe bindings use vendored aoTuV/libvorbis and libogg through locked aotuv_lancer_vorbis_sys 0.1.6 and ogg_next_sys 0.1.5 (BSD-3-Clause). Reviewed exact manifests/build scripts and complete upstream copyright/licence notices: ordinary builds use a C compiler via cc and supplied bindings, with no system codec library, bindgen/libclang or random-serial feature. The binding crate's archive omits its workspace-root licence, so the complete upstream bindings notice and archived codec notices are preserved in the backend notices. Preserve these notices with source/binary distributions in both licence routes. Other locked Rust/build dependencies retain their own terms. The newly locked tinyvec 1.13.3 declares Zlib OR Apache-2.0 OR MIT; its manifest and complete licence texts were reviewed. This scoped review does not replace the release-wide dependency audit.

Foundry TOML settings dependencies

Foundry directly pins toml 1.1.6+spec-1.1.0 and uses the existing pinned Serde/serde_json graph. Its new locked parser/serializer dependencies are toml_datetime 1.1.2+spec-1.1.0, toml_parser 1.1.4+spec-1.1.0, toml_writer 1.1.2+spec-1.1.0 and serde_spanned 1.1.1, all declaring MIT OR Apache-2.0, plus winnow 1.0.4 declaring MIT. Their downloaded exact Cargo manifests and complete licence texts were reviewed for this addition. Preserve upstream copyright/licence notices when distributing Foundry. This scoped review does not establish a complete release dependency audit. Native WebView2/WebKitGTK dependencies retain their own platform distribution terms.

Optional CPU raster backend

The default-disabled ravet-surface/raster feature pins tiny-skia and tiny-skia-path 0.12.0 (BSD-3-Clause), arrayref 0.3.9 (BSD-2-Clause) and strict-num 0.1.1 (MIT). With raster alone, only tiny-skia's std feature is selected; PNG loading, SIMD feature and native Skia are disabled. Preserve the complete upstream notices in source and binary distribution. Existing transitive components remain part of the release-wide dependency audit; this feature review does not establish a release support matrix.

The default-disabled audio-file mp3-encode feature pins mp3lame-encoder 0.2.5 and mp3lame-sys 0.1.11 with defaults disabled. Both bindings declare LGPL 3.0; the bundled unmodified LAME 3.100 encoder mostly grants GNU Library GPL 2-or-later, and ReplayGain analysis grants LGPL 2.1-or-later. Decoder/frontend features are disabled. Unix builds statically compile the codec with configure, make and a C compiler. Exact published source commits, verified crate archive hashes, complete license texts and original component attribution are retained in the backend notices. These components retain their independent obligations: a RAVET commercial agreement does not relicense them or certify combined/static-link distribution, source/ relinking compliance or patent clearance. Consumers must review their own distribution route and retain applicable notices/source rights.

Optional worker image codecs

The separate default-disabled gif-image feature pins gif 0.14.2 and weezl 0.1.10, both independently MIT OR Apache-2.0, with defaults disabled and only std. The configuration selects no color_quant or native C. Complete original copyright and licence texts, archive hashes and reviewed commits are preserved in GIF notices. Runtime library obligations remain independent of RAVET's commercial terms; Pillow is only a first-party fixture-generation tool.

The default-disabled Surface image feature pins png0.18.1 (MIT OR Apache-2.0) and zune-jpeg0.5.15/core0.5.3 (MIT OR Apache-2.0 OR Zlib). Reviewed exact archive hashes, manifests and complete compression/backend notices are retained in the image notices. Selected pure-Rust compression includes fdeflate, flate2, miniz_oxide, adler2, simd-adler32 and crc32fast; each retains its independent copyright/licence terms. Optional zlib-rs0.6.8 is locked but unselected here. Preserve applicable notices for source/binary distribution; this scoped review does not replace release-wide dependency review or establish a platform/support matrix. First-party image fixtures contain only generated patterns under the repository licence.

The separate default-disabled jpeg-encode feature pins jpeg-encoder 0.7.1 with defaults disabled and only std, without runtime dependencies, native C or SIMD. Its exact archive hash, manifest, upstream commit and full licence texts were reviewed. Upstream declares (MIT OR Apache-2.0) AND IJG; preserve the complete JPEG notices, including the original Lane/Commander DCT attribution and required executable acknowledgement: "this software is based in part on the work of the Independent JPEG Group". These obligations remain independent of RAVET's commercial licence. This scoped review does not replace the release-wide dependency and distribution review.

The optional external-SDK VST3 hosting provider links caller-owned SDK hosting implementation. Its CMake build copies the complete external SDK LICENSE.txt into the build directory; retain that MIT notice in linked distributions. Cargo only supplies the Rust provider ABI/owner and does not fetch or vendor the SDK. See VST3 hosting.

Optional SVG image import

Default-disabled svg-image pins resvg/usvg0.48.1, direct roxmltree0.21.1, svgtypes0.16.1 and simplecss0.2.2 with direct defaults disabled. Effective tiny-skia std/SIMD/PNG and roxmltree positions/std remain enabled through transitive feature unification. Font/system-font/memmap/SVGZ/writer/raster-image defaults remain off. Complete independent selected and lock-only notices preserve exact published MIT/Apache-2.0/BSD/Zlib alternatives and attribution. The first-party fixtures contain no downloaded art or font; the existing outlined RAVET logo remains first-party.

The optional SVG graph under all workspace features also retains notices for bytemuck derive and its proc-macro tooling, numeric traits/euclid and zlib-rs selected through feature unification. Exact resolved versions and complete licence files appear in the SVG notices. This dependency evidence does not replace release-wide legal review.

The new primitive local fallback fonts are first-party reusable test assets under the repository source licensing policy; their complete generator and hashes are retained. No new runtime dependency is added for caller-owned font fallback. The separate unchanged Noto Arabic fixture retains its existing OFL notice.

The authored two-axis variation fixture contains only primitive first-party rectangles and deliberate cmap aliases under the repository source licence. Its optional fontTools/HarfBuzz generation/oracle tools add no runtime dependency. System font catalogue metadata and checked bytes remain consumer-owned in memory; no installed font asset is redistributed or licence/embedding permission granted by the native loader.