mirror of https://bitbucket.org/ausocean/av.git
49 lines
1.3 KiB
Go
49 lines
1.3 KiB
Go
package main
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import (
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"flag"
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"fmt"
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"io/ioutil"
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"log"
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"bitbucket.org/ausocean/av/audio/pcm"
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)
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// This program accepts an input pcm file and outputs a resampled pcm file.
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// Input and output file names, to and from sample rates, channels and bit-depth can be specified as arguments.
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func main() {
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var inPath string
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var outPath string
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var from int
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var to int
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var channels int
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var bitDepth int
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flag.StringVar(&inPath, "in", "data.pcm", "file path of input data")
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flag.StringVar(&outPath, "out", "resampled.pcm", "file path of output")
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flag.IntVar(&from, "from", 48000, "sample rate of input file")
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flag.IntVar(&to, "to", 8000, "sample rate of output file")
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flag.IntVar(&channels, "ch", 1, "number of channels in input file")
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flag.IntVar(&bitDepth, "bd", 16, "bit depth of input file")
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flag.Parse()
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// Read pcm.
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inPcm, err := ioutil.ReadFile(inPath)
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if err != nil {
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log.Fatal(err)
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}
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fmt.Println("Read", len(inPcm), "bytes from file", inPath)
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// Resample pcm.
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resampled, err := pcm.Resample(inPcm, from, to, channels, bitDepth)
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if err != nil {
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log.Fatal(err)
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}
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// Save resampled to file.
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err = ioutil.WriteFile(outPath, resampled, 0644)
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if err != nil {
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log.Fatal(err)
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}
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fmt.Println("Encoded and wrote", len(resampled), "bytes to file", outPath)
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}
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