微信錄音文件amr格式轉map

依賴 ffmpeg 所以可以適用於所有 ffmpeg 所支持的文件格式的轉換。

 

1. 初始化時判斷當前運行環境，將bin目錄中對應的 ffmpeg 可執行文件拷貝到臨時目錄中
2. 根據文件類型及配置通過 Runtime.getRuntime().exec(cmd) 執行 ffmpeg 對應的轉碼命令

<dependency>
    <groupId>com.github.dadiyang</groupId>
    <artifactId>jave</artifactId>
    <version>1.0.0</version>
</dependency>

@Slf4j
public class VoiceDownload {

    public static void main(String[] args) throws Exception {

        System.out.println(FileUtils.getClassPath());
        String path1 = "E:\\workSpeace\\target\\93c86b5d67e4443196dbd1ff2b27abe6.amr";
        String path2 = "E:\\workSpeace\\target\\93c86b5d67e4443196dbd1ff2b27abe6.mp3";
        changeToMp3(path1, path2);
    }

    /**
     *
     * @param sourcePath    輸入amr路徑
     * @param targetPath    輸出MP3路勁
     */
    public static void changeToMp3(String sourcePath, String targetPath) {
        System.setProperty("ffmpeg.home", FileUtils.getClassPath() + "ffmpeg");
        log.info("ffmpeg.home", FileUtils.getClassPath() + "ffmpeg");
        File source = new File(sourcePath);
        File target = new File(targetPath);
        AudioAttributes audio = new AudioAttributes();
        AmrToMp3Encoder encoder = new AmrToMp3Encoder();
        audio.setCodec("libmp3lame");
        EncodingAttributes attrs = new EncodingAttributes();
        attrs.setFormat("mp3");
        attrs.setAudioAttributes(audio);
        try {
            encoder.encode(source, target, attrs);
        } catch (IllegalArgumentException e) {
            e.printStackTrace();
        } catch (InputFormatException e) {
            e.printStackTrace();
        } catch (EncoderException e) {
            e.printStackTrace();
        }
    }



    /**
     * 判斷文件是不是amr格式
     *
     * @param  fileName  文件名
     * */
    public static boolean isAudioAmr(String fileName) {
        String tmpName = fileName.toLowerCase();
        return  tmpName.endsWith(".amr");
    }


    private static class AmrToMp3Encoder extends Encoder {
        @Override
        protected void processErrorOutput(EncodingAttributes attributes, BufferedReader errorReader, File source, EncoderProgressListener listener) throws EncoderException, IOException {
            // 屏蔽默認的錯誤處理
            try {
                String line;
                while ((line = errorReader.readLine()) != null) {
                    log.debug(line);
                }
            }
            catch (Exception exp) {
                log.error("file convert error message process failed. ", exp);
            }
        }
    }

}