whisper_flutter_new/example/lib/whisper_audio_convert.dart

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import "dart:async";
import "dart:io";
import "package:ffmpeg_kit_flutter_full_gpl/ffmpeg_kit.dart";
import "package:ffmpeg_kit_flutter_full_gpl/ffmpeg_session.dart";
import "package:ffmpeg_kit_flutter_full_gpl/return_code.dart";
import "package:flutter/foundation.dart";
/// Class used to convert any audio file to wav
class WhisperAudioconvert {
const WhisperAudioconvert({
required this.audioInput,
required this.audioOutput,
});
/// Input audio file
final File audioInput;
/// Output audio file
final File audioOutput;
/// convert [audioInput] to wav file
Future<File?> convert() async {
final FFmpegSession session = await FFmpegKit.execute(
[
"-y",
"-i",
audioInput.path,
"-ar",
"16000",
"-ac",
"1",
"-c:a",
"pcm_s16le",
audioOutput.path,
].join(" "),
);
final ReturnCode? returnCode = await session.getReturnCode();
if (ReturnCode.isSuccess(returnCode)) {
return audioOutput;
} else if (ReturnCode.isCancel(returnCode)) {
if (kDebugMode) {
debugPrint("[Whisper]File convertion canceled");
}
} else {
if (kDebugMode) {
debugPrint(
"[Whisper]File convertion error with returnCode ${returnCode?.getValue()}",
);
}
}
return null;
}
}