/**
     * wav转换成mp3的本地方法
     *
     * @param wav
     * @param mp3
     */
    private native void convertToMp3(String wav, String mp3);

    /**
     * 设置进度条的进度，提供给C语言调用
     *
     * @param progress
     */
    public void setConvertProgress(long progress, long total, String path) {
        Log.d(this.getClass().getSimpleName(), "回调的进度:" + progress + "----总进度:" + total + "----path:" + path);
    }

 do {
        read = fread(wav_buffer, sizeof(short int) * 2, 8192, fwav);
        total += read * sizeof(short int) * 2;
        fseek(fwavCount, 0, SEEK_END);
        long length = ftell(fwavCount);
        rewind(fwavCount);
        LOGI("converting ....%d", total);
        publishJavaProgress(env, obj, total, length, jmp3);
        // 调用java代码 完成进度条的更新
        if (read != 0) {
            write = lame_encode_buffer_interleaved(lame, wav_buffer, read, mp3_buffer, 8192);
            //把转化后的mp3数据写到文件里
            fwrite(mp3_buffer, sizeof(unsigned char), write, fmp3);
        }
        if (read == 0) {
            lame_encode_flush(lame, mp3_buffer, 8192);
        }
    } while (read != 0);