我知道这个问题已经讨论过了，但是在搜索了很多之后，我无法找到解决方案，为什么两个 .wav 合并文件无法播放？我正在将两个 .wav 文件合并到一个文件中。但是合并的文件只播放了一个第二。没有别的。点击播放按钮后播放一秒钟。请给我建议或检查我的代码以确定问题。提前谢谢。我使用两个合并两个文件的代码如下：
private static final int RECORDER_SAMPLERATE = 44100;
private static final int RECORDER_BPP = 16;
private void CombineWaveFile(String file1, String file2, String path) {
FileInputStream in1 = null, in2 = null;
FileOutputStream out = null;
long totalAudioLen = 0;
long totalDataLen = totalAudioLen + 36;
long longSampleRate = RECORDER_SAMPLERATE;
int channels = 2;
long byteRate = RECORDER_BPP * RECORDER_SAMPLERATE * channels / 8;
byte[] data = new byte[8192];
try {
in1 = new FileInputStream(file1);
in2 = new FileInputStream(file2);
File file_path = new File(path);
file_path.setReadable(true);
out = new FileOutputStream(file_path);
totalAudioLen = in1.getChannel().size() + in2.getChannel().size();
totalDataLen = totalAudioLen + 36;
WriteWaveFileHeader(out, totalAudioLen, totalDataLen,
longSampleRate, channels, byteRate);
while (in1.read(data) != -1) {
out.write(data);
}
while (in2.read(data) != -1) {
out.write(data);
}
out.close();
in1.close();
in2.close();
Log.e("mPAthTemp Combine", file_path.toString());
Log.e("mFileSecond Combine", file2);
Toast.makeText(this, "Done!!", Toast.LENGTH_LONG).show();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
private void WriteWaveFileHeader(FileOutputStream out, long totalAudioLen,
long totalDataLen, long longSampleRate, int channels, long byteRate)
throws IOException {
byte[] header = new byte[44];
header[0] = 'R';
header[1] = 'I';
header[2] = 'F';
header[3] = 'F';
header[4] = (byte) (totalDataLen & 0xff);
header[5] = (byte) ((totalDataLen >> 8) & 0xff);
header[6] = (byte) ((totalDataLen >> 16) & 0xff);
header[7] = (byte) ((totalDataLen >> 24) & 0xff);
header[8] = 'W';
header[9] = 'A';
header[10] = 'V';
header[11] = 'E';
header[12] = 'f';
header[13] = 'm';
header[14] = 't';
header[15] = ' ';
header[16] = 16;
header[17] = 0;
header[18] = 0;
header[19] = 0;
header[20] = 1;
header[21] = 0;
header[22] = (byte) channels;
header[23] = 0;
header[24] = (byte) (longSampleRate & 0xff);
header[25] = (byte) ((longSampleRate >> 8) & 0xff);
header[26] = (byte) ((longSampleRate >> 16) & 0xff);
header[27] = (byte) ((longSampleRate >> 24) & 0xff);
header[28] = (byte) (byteRate & 0xff);
header[29] = (byte) ((byteRate >> 8) & 0xff);
header[30] = (byte) ((byteRate >> 16) & 0xff);
header[31] = (byte) ((byteRate >> 24) & 0xff);
header[32] = (byte) (2 * 16 / 8);
header[33] = 0;
header[34] = RECORDER_BPP;
header[35] = 0;
header[36] = 'd';
header[37] = 'a';
header[38] = 't';
header[39] = 'a';
header[40] = (byte) (totalAudioLen & 0xff);
header[41] = (byte) ((totalAudioLen >> 8) & 0xff);
header[42] = (byte) ((totalAudioLen >> 16) & 0xff);
header[43] = (byte) ((totalAudioLen >> 24) & 0xff);
out.write(header, 0, 44);
}
}
我用来播放音频文件的代码如下：
private void startPlaying(String file_path) {
mPlayer = new MediaPlayer();
try {
Log.e("playing", file_path);
mPlayer.setDataSource(file_path);
mPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
mPlayer.prepare();
mPlayer.start();
mPlayer.setOnCompletionListener(new OnCompletionListener() {
@Override
public void onCompletion(MediaPlayer mp) {
// TODO Auto-generated method stub
showToast("Complete");
setProgressBar(false);
mButtonStart.setEnabled(true);
mButtonStop.setEnabled(false);
stopPlaying();
}
});
} catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SecurityException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
给我一个解决方案为什么会发生这种情况。谢谢..