mirror of
https://github.com/mudler/LocalAI.git
synced 2024-12-25 07:11:03 +00:00
56 lines
1.5 KiB
Go
56 lines
1.5 KiB
Go
package utils
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import (
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"fmt"
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"os"
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"os/exec"
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"strings"
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)
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func ffmpegCommand(args []string) (string, error) {
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cmd := exec.Command("ffmpeg", args...) // Constrain this to ffmpeg to permit security scanner to see that the command is safe.
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cmd.Env = os.Environ()
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out, err := cmd.CombinedOutput()
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return string(out), err
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}
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// AudioToWav converts audio to wav for transcribe.
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// TODO: use https://github.com/mccoyst/ogg?
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func AudioToWav(src, dst string) error {
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commandArgs := []string{"-i", src, "-format", "s16le", "-ar", "16000", "-ac", "1", "-acodec", "pcm_s16le", dst}
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out, err := ffmpegCommand(commandArgs)
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if err != nil {
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return fmt.Errorf("error: %w out: %s", err, out)
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}
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return nil
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}
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// AudioConvert converts generated wav file from tts to other output formats.
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// TODO: handle pcm to have 100% parity of supported format from OpenAI
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func AudioConvert(src string, format string) (string, error) {
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extension := ""
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// compute file extension from format, default to wav
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switch format {
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case "opus":
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extension = ".ogg"
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case "mp3", "aac", "flac":
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extension = fmt.Sprintf(".%s", format)
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default:
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extension = ".wav"
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}
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// if .wav, do nothing
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if extension == ".wav" {
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return src, nil
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}
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// naive conversion based on default values and target extension of file
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dst := strings.Replace(src, ".wav", extension, -1)
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commandArgs := []string{"-y", "-i", src, "-vn", dst}
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out, err := ffmpegCommand(commandArgs)
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if err != nil {
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return "", fmt.Errorf("error: %w out: %s", err, out)
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}
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return dst, nil
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}
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