compressionkit E2A2 codec, redistributed from danjacobellis/E2A2 with the author's permission
36e7294 | {"spec": "e2a2 stream layout v1 over [GGDLPC v1: unified coder (one learned causal FIR predictor per channel with arithmetic-mean fallback; one stateless pooled statistic: mean of the causal template abs differences and the last 16 coded abs residuals in scan order; two per-channel affine laws -> analytic folded GGD conditionals on the tau=2^(1/4) scale grid; canonical Huffman tables under the derived quotient split, <= 63 windowed hi values + escape at any bit depth; derived zero-run mode with elementary Golomb codes and exclusion tables, always available); inputs in [-N, N], N <= 65536; one call = one byte-padded bitstream, channel prefixes are literal bit prefixes]: two_stream = global[first scale group, whole plane, one pad] + per-macroregion detail streams (scale groups >= 1, coarse-to-fine, channel-major, one pad per region); all_detail = NO global stream, every channel per macroregion, each region decodable from its own bytes alone; one GGDLPC channel record per latent channel (global index); op-point streams are literal bit-prefixes", "version": 5, "stream_mode": "all_detail", "rank": 1, "macroregion": 16384, "N": 31, "scale_groups": [[128, 0, 32], [64, 32, 56], [32, 56, 80]], "channels": [{"channel": 0, "mu": 0.0005708670910493827, "a": 0.9017839311968358, "b": 0.0956995194041974, "u": 0.9121752076531893, "v": 0.20170438466836413, "wq": [-11, 0], "bq": 0, "n_samples": 6635520}, {"channel": 1, "mu": 0.0006474247685185185, "a": 0.9000958047565498, "b": 0.0625, "u": 1.0177904504107034, "v": 0.20673688190050246, "wq": [27, -8], "bq": 0, "n_samples": 6635520}, {"channel": 2, "mu": 0.008614547164351852, "a": 0.9027381136555681, "b": 0.12989438289956107, "u": 1.0123520715491947, "v": 0.28729721068330993, "wq": [-3, -1], "bq": 2, "n_samples": 6635520}, {"channel": 3, "mu": -0.013762598861882715, "a": 0.883406981827356, "b": 0.0690563803551493, "u": 1.0046127446311997, "v": 0.20829629798108376, "wq": [1, 0], "bq": -4, "n_samples": 6635520}, {"channel": 4, 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