47 lines
1.8 KiB
Bash
47 lines
1.8 KiB
Bash
#!/bin/bash
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# Copyright © 2012-2026 ScriptFanix
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# A copy of the GNU General Public License v3 is includded in the LICENSE file
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# at the root of the project.
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checkCopy() {
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# Returns true only when the source file is compatible enough with the
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# destination profile that it can be copied instead of re-encoded.
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# All three conditions must hold simultaneously.
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(
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# If the destination doesn't restrict sample rate, any rate is
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# acceptable. Otherwise the source rate must match exactly.
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[ -z "${destinationfrequency[$destination]}" ] \
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|| (( ${rate:-0} == ${destinationfrequency[$destination]} ))
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) && (
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# If the destination doesn't restrict channel count, any number
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# is acceptable. Otherwise the source channel count must match
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# exactly.
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[ -z "${destinationchannels[$destination]}" ] \
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|| (( ${channels:-0} == ${destinationchannels[$destination]} ))
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) && (
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# Bitrate check: accept if source exactly matches the target
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# quality setting, OR if a maximum bps ceiling is configured
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# and the source bitrate is at or below it.
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# Default of 1000 kbps when bitrate is unknown forces a
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# re-encode
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(( ${bitrate:-1000} == ${destinationquality[$destination]} )) \
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|| (
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[ -n "${destinationmaxbps[$destination]}" ] \
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&& ((
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${bitrate:-1000}
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<= ${destinationmaxbps[$destination]:-0}
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))
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)
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)
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}
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