atracdenc, branch win_msys2 OpenSource ATRAC1 ATRAC3 Encoder https://code.mastervirt.ru/atracdenc/atom?h=win_msys2 2026-05-03T12:28:30Z Update submodule 2026-05-03T12:28:30Z Daniil Cherednik dan.cherednik@gmail.com 2026-05-03T12:28:30Z urn:sha1:c8ec2408680d8c3df8fffdf3859d32659dbd7a02 Relax two-point ATRAC3 MDCT test tolerance 2026-05-03T10:55:33Z Daniil Cherednik dan.cherednik@gmail.com 2026-05-03T10:55:33Z urn:sha1:37f216c4b2ae39be30861aeb7303c89c4bd2a6d1 Stabilize random MDCT tests 2026-05-03T10:38:55Z Daniil Cherednik dan.cherednik@gmail.com 2026-05-03T10:38:55Z urn:sha1:f49630800a78245ad8eab55b0c72ebc8b43c1bf7 Fix IPQF test data reads on Windows 2026-05-03T10:09:30Z Daniil Cherednik dan.cherednik@gmail.com 2026-05-03T10:09:30Z urn:sha1:2dc835a1dae67675650c558b74ada1da91547d55 Enable tests for MSYS2 builds 2026-05-03T10:00:31Z Daniil Cherednik dan.cherednik@gmail.com 2026-05-03T10:00:31Z urn:sha1:d09377c395c51659847d752e7dbb648fbdb03fa9 Find GTest and enable CTest outside the Unix-only block so Windows/MSYS2 builds can register the existing unit tests. Install the MSYS2 GTest package in CI and avoid linking test targets to libm on Windows. Add MSYS2 build support 2026-05-03T09:46:11Z Daniil Cherednik dan.cherednik@gmail.com 2026-05-03T09:46:11Z urn:sha1:aefe7a7c51c3255649a8de6d9f63c5329193c57a Add a selectable PCM I/O backend so MSVC builds can keep Media Foundation while MSYS2/MinGW builds use libsndfile. Teach the libsndfile finder about MINGW_PREFIX and add a Windows MSYS2 CI job that builds the libsndfile backend. Fix mono AT3 RIFF channel count. issues/67 2026-05-02T21:42:38Z Daniil Cherednik dan.cherednik@gmail.com 2026-05-02T21:40:10Z urn:sha1:93e92ee09faa942eefa997e244a7e7b519a51119 AT3 RIFF output always stores a two-channel ATRAC3 stream. Mono input is encoded as duplicated single channels or as joint stereo with an empty side channel. Initialize bit allocator LastLambda during the start allocation. Fix issues/69 2026-05-02T20:34:24Z Daniil Cherednik dan.cherednik@gmail.com 2026-05-02T20:32:03Z urn:sha1:1186ae7be5c5a4f335dbf6f3a768e3792ee4bcb2 Merge pull request #66 from dcherednik/new_psy 2026-04-19T22:49:22Z Daniil Cherednik dan.cherednik@gmail.com 2026-04-19T22:49:22Z urn:sha1:d557341f131c4b531500d879b9003dcfbc43f678 Conservative initial implementation of ATRAC3 tonal extraction. This is a safe first step tuned for stability and bitstream compatibility, not maximum aggressiveness. It gives the most benefit on synthetic signals and material with strong, steady pure tones (for example simple electronic leads and solo tonal instruments). atrac3: reimplement tonal encoding. Use flatness-based tonal extraction 2026-04-19T22:27:45Z Daniil Cherednik dan.cherednik@gmail.com 2026-04-18T14:51:23Z urn:sha1:e784b79cfef682059cf5cc8cf9bed635e714c439 - Add shared CalcSpectralFlatnessPerBfu helper in atrac_psy_common with BFU-table mapping. - Implement ATRAC3 tonal extraction: compute MDCT energy, estimate per-BFU flatness, extract up to 5-bin strongest tonal run in low-flatness BFUs, and zero extracted bins in residual. - Map extracted tonal bins into TTonalBlocks and integrate them into bitstream coding. - Update ATRAC3 bit allocation - reduce residual bits for BFUs with tonal blocks, and increase tonal quantizer selection. - Restore --notonal CLI option in main.cpp for A/B comparison.