我一直在尝试用 Java 制作我的第一个 GUI 音乐播放器。到目前为止,我已经能够使用 Javasound 和 MP3SPI 播放 MP3。现在,我想支持 .m4a 歌曲,而我研究过的最好的库是 JAAD。我下载了它,将它添加到我的项目中,当我尝试播放一首 .m4a 歌曲时它运行良好。添加 JAAD 库后尝试播放 .mp3 时会出现问题。我播放歌曲的代码是:
File file = new File(pathToSong);
AudioInputStream audioStream= AudioSystem.getAudioInputStream(file); // Obtains an audio input stream of the song
AudioFormat baseFormat = audioStream.getFormat(); //Obtains the audio format of the song in the audio input stream.
decodedFormat = new AudioFormat(AudioFormat.Encoding.PCM_SIGNED, //The type of encoding for the audio stream
baseFormat.getSampleRate(), //Sample rate of the audio stream
16, //Number of bits in each sample of a sound that has this format.
baseFormat.getChannels(), //Number of audio channels in this audio stream
baseFormat.getChannels() * 2, //Number of bytes in each frame of the audiostream
baseFormat.getSampleRate(), //Number of frames played or recorded per second, for the sound in the audio stream
false); //Data stored in little-endian order
decodedAudioStream = AudioSystem.getAudioInputStream(decodedFormat, audioStream); //Obtains an audio input stream of the indicated encoding by converting the provided audio input stream.
playSong(); //Play the song
(playSong() 只需读取流并将字节写入 SourceDataLine)
添加 JAAD 库后尝试播放 .mp3 时出现的错误如下:
java.io.IOException: Resetting to invalid mark
at java.io.BufferedInputStream.reset(BufferedInputStream.java:416)
at net.sourceforge.jaad.spi.javasound.AACAudioFileReader.getAudioInputStream(AACAudioFileReader.java:118)
at net.sourceforge.jaad.spi.javasound.AACAudioFileReader.getAudioInputStream(AACAudioFileReader.java:143)
at javax.sound.sampled.AudioSystem.getAudioInputStream(AudioSystem.java:1162)
at Song.run(Song.java:38)
据我了解,Javasound 和 JAAD 的 getAudioInputStream 似乎存在冲突。我该如何解决这个冲突?