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The PlatformIO dep sh123/esp32_codec2_arduino@1.0.7 bundles codec2 v0.9.2. Mac-side pycodec2 v3.0.4 links libcodec2 v1.2.0. Years of codec2 development between those releases. Replace the upstream lib with a local vendor of drowe67/codec2 v1.2.0 under lib/codec2/. Trim the 191-file source tree down to the ~100 files actually needed for codec2 (drop FreeDV, OFDM, COHPSK, FSK, FM-FSK, LDPC, Horus, CLI tools — pyxis only uses codec2_create/destroy/encode/decode + samples_per_frame / bytes_per_frame). Carry over the v0.9 codebook .c files since the codebook contents matched (compared against v1.2's src/codebook/*.txt). Define __EMBEDDED__ so the codebooks land in flash (.const) rather than RAM. Without it the codebooks add ~127KB to BSS and the LVGL task fails to start (RAM was 65% full vs 27% with __EMBEDDED__). Provide trivial codec2_malloc/codec2_free wrappers in codec2_alloc_esp32.c (codec2 v1.2 expects them when __EMBEDDED__ is defined; ESP-IDF's malloc/free already pull from internal RAM). Also explicitly add SD/FS to lib_deps and #include <SD.h> in main.cpp — the previous esp32_codec2 dep transitively pulled SD which let SDArchiveFileSystem.h get away with depending on it implicitly. With chain+ ldf mode and no esp32_codec2 dep, we have to declare the framework lib explicitly. DOES NOT fix the ~30x speech-decode RMS asymmetry between pycodec2 self-tests (~5800) and pyxis decoding the same encoded bytes (~170). Sine waves and 3-formant synthesis pass clean both directions; only real TTS speech triggers it. Probably a separate codec-state divergence (the encoder/decoder are independent codec2 instances in pyxis, both fresh per call) or a wire-format quirk we still need to track down. v1.2 is the right baseline regardless — same bug class as several upstream fixes. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
17 lines
585 B
JSON
17 lines
585 B
JSON
{
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"name": "codec2",
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"version": "1.2.0-vendored",
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"description": "Vendored David Rowe codec2 v1.2.0. Replaces sh123/esp32_codec2_arduino@1.0.7 (which bundled codec2 v0.9.2). The version gap caused real-speech decode amplitude to drop ~30x on pyxis vs pycodec2 (which links libcodec2 v1.2.0). See README.md for details.",
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"keywords": "codec2, voice, speech, encoder, decoder",
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"license": "LGPL-2.1-only",
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"frameworks": "arduino",
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"platforms": "espressif32",
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"headers": "codec2.h",
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"build": {
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"flags": [
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"-D__EMBEDDED__",
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"-DMEMORY_CRITICAL"
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]
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}
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}
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