av/cmd/adpcm/encode-pcm/encode-pcm.go

package main

import (
	"flag"
	"io/ioutil"

	"bitbucket.org/ausocean/av/stream/adpcm"
)

func main() {
	var inPath string
	var adpcmPath string
	flag.StringVar(&inPath, "in", "data.pcm", "file path of input data")
	flag.StringVar(&adpcmPath, "out", "encoded.adpcm", "file path of output")
	flag.Parse()
	//read pcm
	pcm, err := ioutil.ReadFile(inPath)
	if err != nil {
		panic(err)
	}

	//encode adpcm
	var comp []byte
	start := 0
	bSize := 1010
	for i := 0; i < len(pcm); i++ {
		if i%bSize == bSize-1 {
			block := pcm[start : i+1]

			encBlock, err := adpcm.EncodeBlock(block)
			if err != nil {
				panic(err)
			}
			comp = append(comp, encBlock...)
			start = i + 1
		}
	}
	// save adpcm to file
	err = ioutil.WriteFile(adpcmPath, comp, 0644)
	if err != nil {
		panic(err)
	}
}