Jack configuration (alpha)

2021-08-29 14:04:59 -04:00
parent 6e1b7346f6
commit 94c7d406f7
32 changed files with 1061 additions and 293 deletions
@@ -0,0 +1,66 @@
+
+
+export default class AlsaDeviceInfo {
+    deserialize(input: any): AlsaDeviceInfo {
+        this.cardId = input.cardId;
+        this.id = input.id;
+        this.name = input.name;
+        this.longName = input.longName;
+        this.sampleRates = input.sampleRates as number[];
+        this.minBufferSize = input.minBufferSize;
+        this.maxBufferSize = input.maxBufferSize;
+        return this;
+    }
+    static deserialize_array(input: any): AlsaDeviceInfo[]
+    {
+        let result: AlsaDeviceInfo[] = [];
+        for (let i = 0; i < input.length; ++i)
+        {
+            result.push(new AlsaDeviceInfo().deserialize(input[i]));
+        }
+        return result;
+    }
+    closestSampleRate(sr: number): number
+    {
+        let result = 48000;
+        let bestError = 1E36;
+        for (let rate of this.sampleRates)
+        {
+            let error = (sr-rate)*(sr-rate);
+            if (error < bestError)
+            {
+                bestError = error;
+                result = rate;
+            }
+
+        }
+        return result;
+    }
+    closestBufferSize(buffSize: number): number
+    {
+        let result = 64;
+        let bestError = 1E36;
+
+        for (let sz = 2; sz <= this.maxBufferSize; sz *= 2)
+        {
+            if (sz >= this.minBufferSize)
+            {
+                let error = (sz-buffSize)*(sz-buffSize);
+                if (error < bestError)
+                {
+                    bestError = error;
+                    result = sz;
+                }
+            }
+        }
+        return result;
+    }
+
+    cardId: number = -1;
+    id: string = "";
+    name: string = "";
+    longName: string = "";
+    sampleRates: number[] = [];
+    minBufferSize: number = 0;
+    maxBufferSize: number = 0; 
+};