@simbi/standardized-audio-context/build/es2019/factories/decrement-cycle-counter.js

A cross-browser implementation of the AudioContext which aims to closely follow the standard.

import { isAudioNodeOutputConnection } from '../guards/audio-node-output-connection';
export const createDecrementCycleCounter = (connectNativeAudioNodeToNativeAudioNode, cycleCounters, getAudioNodeConnections, getNativeAudioNode, getNativeAudioParam, getNativeContext, isActiveAudioNode, isNativeOfflineAudioContext) => {
    return (audioNode, count) => {
        const cycleCounter = cycleCounters.get(audioNode);
        if (cycleCounter === undefined) {
            throw new Error('Missing the expected cycle count.');
        }
        const nativeContext = getNativeContext(audioNode.context);
        const isOffline = isNativeOfflineAudioContext(nativeContext);
        if (cycleCounter === count) {
            cycleCounters.delete(audioNode);
            if (!isOffline && isActiveAudioNode(audioNode)) {
                const nativeSourceAudioNode = getNativeAudioNode(audioNode);
                const { outputs } = getAudioNodeConnections(audioNode);
                for (const output of outputs) {
                    if (isAudioNodeOutputConnection(output)) {
                        const nativeDestinationAudioNode = getNativeAudioNode(output[0]);
                        connectNativeAudioNodeToNativeAudioNode(nativeSourceAudioNode, nativeDestinationAudioNode, output[1], output[2]);
                    }
                    else {
                        const nativeDestinationAudioParam = getNativeAudioParam(output[0]);
                        nativeSourceAudioNode.connect(nativeDestinationAudioParam, output[1]);
                    }
                }
            }
        }
        else {
            cycleCounters.set(audioNode, cycleCounter - count);
        }
    };
};
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