Contour advBeta 1.2.2-advbeta2

Superseded by 1.3.2-advbeta1.

Contour advBeta is the experimental build for advanced features. It installs alongside stable Contour as a separate app. This release updates an existing advBeta installation (versionCode 19); the stable Contour library is separate.

New: experimental TRN Black Pearl support

• Strict USB match: 3302:43E8, WalkPlay SchemeNo16. Similar-looking HiFi188/other USB variants are not supported.
• Ten-band PEQ, native low/high shelves, preamp, DAC import and device-aware profile matching.
• Every send requires a complete device read first, then verifies all ten band registers, preamp and the bulk slot by read-back.
• No EQ writes on connect; writes require an explicit user action.

Important limitations

This TRN implementation has NOT been tested on a physical Black Pearl. Protocol behavior follows the pinned permissively licensed devicePEQ reference. Audible DSP response, native shelf behavior, timing and persistence after unplugging still need hardware testing. Register read-back alone does not prove the audible result. Start testing at a low listening volume.

A/B and hardware volume are unavailable on the experimental TRN target. Protocol Micro retains its eight-band support and existing advBeta hardware volume.

Verification

19/19 core protocol/codec tests passed. Both advBeta and stable variants compile. APK signed with the existing Chronosaur release key. Stable release v1.2.2 and main are unchanged.

SHA-256 of contour-advbeta-1.2.2-advbeta2.apk:
1cfec303a6fd1c0aecc2431337a85b10d396dbfc938b0bf402c52f7e09d00ec1