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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 | 1x 1x 3x 3x 2x 1x 1x 1x 1x 1x 3x 1x 1x 3x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x | import { filterNeedsEscapeRegexp, streamRegexp } from "./regexp"
export function formatBitrate(bitrate: number | string): string {
if (typeof bitrate === 'number') {
if (bitrate < 1024) {
// Assume the user means kbps
return `${bitrate}k`
} else {
return `${bitrate}`
}
} else {
return bitrate
}
}
interface OutputFilterSpec {
filter: string,
options?: string | string[] | { [key: string]: string },
input?: string,
inputs?: string[],
output?: string,
outputs?: string[]
}
export type OutputFilter = string | OutputFilterSpec
export function formatFilters(specs: OutputFilter[]): string[] {
/* Filter syntax:
filter := inputs? filterspec outputs?
inputs := input inputs?
input := '[' input-name ']'
outputs := output outputs?
output := '[' output-name ']'
filterspec := filter-name ('=' filterargs)?
filterargs := filterarg (':' filterargs)?
filterarg := arg-value | (arg-name '=' arg-value)
*/
return specs.map((spec) => {
if (typeof spec === 'string') {
return spec
}
if (spec.input) {
spec.inputs = [spec.input]
}
let inputs = (spec.inputs || []).map((stream) => stream.replace(streamRegexp, '[$1]')).join('')
let options = ''
if (spec.options) {
if (typeof spec.options === 'string') {
options = `=${spec.options}`
} else if (Array.isArray(spec.options)) {
let optionStrings = spec.options
.map((option) => {
if (option.match(filterNeedsEscapeRegexp)) {
return `'${option}'`
} else {
return option
}
})
options = `=${optionStrings.join(':')}`
} else {
let optionStrings = Object.entries(spec.options)
.map(([key, value]) => {
if (value.match(filterNeedsEscapeRegexp)) {
value = `'${value}'`
}
return `${key}=${value}`
})
options = `=${optionStrings.join(':')}`
}
}
let filter = `${spec.filter}${options}`
if (spec.output) {
spec.outputs = [spec.output]
}
let outputs = (spec.outputs || []).map((stream) => stream.replace(streamRegexp, '[$1]')).join('')
return `${inputs}${filter}${outputs}`
})
} |