ZSTD_MAX_SIZE
ctx->dctx = zstd_init_dstream(ZSTD_MAX_SIZE, ctx->wksp, ctx->wksp_size);
params = zstd_get_params(ZSTD_DEF_LEVEL, ZSTD_MAX_SIZE);
zstd_dstream_workspace_bound(ZSTD_MAX_SIZE));