Robin E. R. Davies
98 lines
3.2 KiB
TypeScript
98 lines
3.2 KiB
TypeScript
/*
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* MIT License
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*
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* Copyright (c) Robin E. R. Davies
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* Copyright (c) Gabriel Hernandez
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is furnished to do
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* so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* 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, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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export default class AlsaDeviceInfo {
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deserialize(input: any): AlsaDeviceInfo {
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this.cardId = input.cardId;
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this.id = input.id;
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this.name = input.name;
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this.longName = input.longName;
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this.sampleRates = input.sampleRates as number[];
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this.minBufferSize = input.minBufferSize;
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this.maxBufferSize = input.maxBufferSize;
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this.supportsCapture = input.supportsCapture ? true : false;
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this.supportsPlayback = input.supportsPlayback ? true : false;
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this.captureBusy = input.captureBusy;
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this.playbackBusy = input.playbackBusy;
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return this;
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}
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static deserialize_array(input: any): AlsaDeviceInfo[]
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{
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let result: AlsaDeviceInfo[] = [];
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for (let i = 0; i < input.length; ++i)
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{
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result.push(new AlsaDeviceInfo().deserialize(input[i]));
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}
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return result;
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}
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closestSampleRate(sr: number): number
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{
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let result = 48000;
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let bestError = 1E36;
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for (let rate of this.sampleRates)
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{
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let error = (sr-rate)*(sr-rate);
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if (error < bestError)
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{
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bestError = error;
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result = rate;
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}
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}
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return result;
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}
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closestBufferSize(buffSize: number): number
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{
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let result = 64;
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let bestError = 1E36;
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for (let sz = 2; sz <= this.maxBufferSize; sz *= 2)
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{
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if (sz >= this.minBufferSize)
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{
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let error = (sz-buffSize)*(sz-buffSize);
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if (error < bestError)
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{
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bestError = error;
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result = sz;
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}
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}
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}
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return result;
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}
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cardId: number = -1;
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id: string = "";
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name: string = "";
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longName: string = "";
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sampleRates: number[] = [];
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minBufferSize: number = 0;
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maxBufferSize: number = 0;
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supportsCapture: boolean = true;
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supportsPlayback: boolean = true;
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captureBusy: boolean = false;
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playbackBusy: boolean = false;
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}; |