Passed
Branch v10.2.x (3351e3)
by Rafael S.
02:34
created

validate-num-channels.js ➔ validateNumChannels   A

Complexity

Conditions 2

Size

Total Lines 8
Code Lines 5

Duplication

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Ratio 0 %

Importance

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Metric Value
cc 2
eloc 5
dl 0
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rs 10
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/*
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 * Copyright (c) 2017-2019 Rafael da Silva Rocha.
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining
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 * a copy of this software and associated documentation files (the
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 * "Software"), to deal in the Software without restriction, including
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 * without limitation the rights to use, copy, modify, merge, publish,
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 * distribute, sublicense, and/or sell copies of the Software, and to
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 * permit persons to whom the Software is furnished to do so, subject to
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 * the following conditions:
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 *
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 * The above copyright notice and this permission notice shall be
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 * included in all copies or substantial portions of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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 *
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 */
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/**
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 * @fileoverview The validateNumChannels function.
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 * @see https://github.com/rochars/wavefile
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 */
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/**
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 * Validate the number of channels in a wav file according to the
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 * bit depth of the audio.
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 * @param {number} channels The number of channels in the file.
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 * @param {number} bits The number of bits per sample.
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 * @return {boolean} True is the number of channels is valid.
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 */
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export function validateNumChannels(channels, bits) {
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  /** @type {number} */
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  let blockAlign = channels * bits / 8;
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  if (channels < 1 || blockAlign > 65535) {
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    return false;
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  }
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  return true;
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}
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