import { AudioSettings } from '../../compile/types';
import { Engine, EngineMetadata, FloatArray } from '../../run/types';
import { CoreRawModule } from '../../stdlib/core/bindings-assemblyscript';
import { MsgRawModule } from '../../stdlib/msg/bindings-assemblyscript';
import { CommonsRawModule } from '../../stdlib/commons/bindings-assemblyscript';
import { EngineLifecycleRawModule } from './engine-lifecycle-bindings';
import { IoRawModule } from './io-bindings';
import { FsRawModule } from '../../stdlib/fs/bindings-assemblyscript';
import { FsImportsAssemblyScript } from '../../stdlib/fs/types';
export type StringPointer = number;
export type MessagePointer = number;
/** Pointer to a float array. */
export type FloatArrayPointer = number;
/** Pointer to data of unknown type that stays in the wasm space (`Message` for example). */
export type InternalPointer = number;
/**
 * Pointer to an array buffer that contains i32 integers.
 * This is what we use to pass generic data back and forth from the module.
 * Because the memory layout is not fixed for data types other than strings
 * REF : https://www.assemblyscript.org/runtime.html#memory-layout
 */
export type ArrayBufferOfIntegersPointer = number;
export interface BaseRawEngine {
    __new: (length: number, classType: number) => InternalPointer;
    memory: WebAssembly.Memory;
}
/**
 * Interface for members that are exported in the WASM module resulting from compilation of
 * WebPd assemblyscript code.
 */
export type RawEngine = BaseRawEngine & EngineLifecycleRawModule & IoRawModule & CommonsRawModule & CoreRawModule & MsgRawModule & FsRawModule;
export type AssemblyScriptWasmImports = FsImportsAssemblyScript;
export interface EngineContext<RawModuleType = object> {
    /**
     * When declaring imported functions, we use objects that will be only available
     * once compilation is done.
     * Therefore we use these forward references in imported functions, and fill them up
     * once compilation is done.
     */
    readonly refs: {
        engine?: Engine;
        rawModule?: RawModuleType;
    };
    /** Values that are accessed frequently are cached here */
    readonly cache: {
        wasmOutput: FloatArray;
        wasmInput: FloatArray;
        arrayType: typeof Float32Array | typeof Float64Array;
        bitDepth: AudioSettings['bitDepth'];
        blockSize: EngineMetadata['settings']['audio']['blockSize'];
    };
    readonly metadata: EngineMetadata;
}