我正在使用音频记录来录制音频，然后我使用媒体编解码器对其进行编码，稍后在需要时我使用media-codec对其进行解码但是我没有这样做，尽管我使用了类助手和我做了很多努力 任何人都可以告诉我有什么不对，我非常感激 检测到我的问题是dequeueOutputBuffer总是返回-1，它抛出超出绑定的异常 这是我的全部主要活动
package com.androidtechpoint.demo.androidvolley;
import android.media.MediaCodec;
import android.annotation.TargetApi;
import android.media.AudioFormat;
import android.media.AudioManager;
import android.media.AudioRecord;
import android.media.AudioTrack;
import android.media.MediaCodec;
import android.media.MediaCodecInfo;
import android.media.MediaFormat;
import android.media.MediaRecorder;
import android.media.MediaRecorder.AudioSource;
import android.os.Build;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.ByteBuffer;
public class Main2delete extends AppCompatActivity {
private AudioRecord recorder;
private AudioTrack player;
int bitRate =128000;
int sampleRate=44100;
int channels = 1;
private MediaCodec encoder;
private MediaCodec decoder;
private static final String AUDIO_MIME_TYPE = "audio/mp4a-latm";
private static final int SAMPLE_RATE = 44100;
private static final int SAMPLES_PER_FRAME = 1024;
private static final int CHANNEL_CONFIG = AudioFormat.CHANNEL_IN_MONO;
private static final int AUDIO_FORMAT = AudioFormat.ENCODING_PCM_16BIT;
private short audioFormat = AudioFormat.ENCODING_PCM_16BIT;
private short channelConfig = AudioFormat.CHANNEL_IN_MONO;
private int bufferSize;
private boolean isRecording;
private boolean isPlaying;
Button btnstart ;
Button btnend;
Button btnlisten ;
ByteArrayInputStream is;
ByteArrayOutputStream outStream;
ByteArrayInputStream inputStream;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2delete);
btnstart=(Button)findViewById(R.id.btnstart);
btnlisten=(Button)findViewById(R.id.btnlisten);
btnend=(Button)findViewById(R.id.btnend);
outStream =new ByteArrayOutputStream();
// intSize = android.media.AudioTrack.getMinBufferSize(RECORDER_SAMPLERATE, RECORDER_CHANNELS_OUT, RECORDER_AUDIO_ENCODING);
try {
setEncoder();
} catch (Exception e) {
System.out.println(e.toString());
}
try {
setDecoder();
} catch (Exception e) {
System.out.println(e.toString());
}
btnstart.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
try {
startRecording();
} catch (IOException e) {
e.printStackTrace();
}
}
});
btnlisten.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
startPlaying();
}
});
btnend.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
stopRecording();
}
});
}
public void startRecording () throws IOException
{
int read;
byte[] buffer1 = new byte[bufferSize];
ByteBuffer[] inputBuffers;
ByteBuffer[] outputBuffers;
ByteBuffer inputBuffer;
ByteBuffer outputBuffer;
MediaCodec.BufferInfo bufferInfo;
int inputBufferIndex;
int outputBufferIndex;
byte[] outData;
encoder.start();
recorder.startRecording();
isRecording = true;
while (isRecording)
{
read = recorder.read(buffer1, 0, bufferSize);
// Log.d("AudioRecoder", read + " bytes read");
//------------------------
inputBuffers = encoder.getInputBuffers();
outputBuffers = encoder.getOutputBuffers();
inputBufferIndex = encoder.dequeueInputBuffer(-1);
if (inputBufferIndex >= 0)
{
inputBuffer = inputBuffers[inputBufferIndex];
inputBuffer.clear();
inputBuffer.put(buffer1);
encoder.queueInputBuffer(inputBufferIndex, 0, buffer1.length, 0, 0);
}
bufferInfo = new MediaCodec.BufferInfo();
outputBufferIndex = encoder.dequeueOutputBuffer(bufferInfo, 10000);
while (outputBufferIndex >= 0)
{
outputBuffer = outputBuffers[outputBufferIndex];
outputBuffer.position(bufferInfo.offset);
outputBuffer.limit(bufferInfo.offset + bufferInfo.size);
outData = new byte[bufferInfo.size];
outputBuffer.get(outData);
//TODO write out Data to stream?
outStream.write(outData);
encoder.releaseOutputBuffer(outputBufferIndex, false);
outputBufferIndex = encoder.dequeueOutputBuffer(bufferInfo, 0);
}
// ----------------------;
}
encoder.stop();
recorder.stop();
}
public void stopRecording ()
{
isRecording = false;
}
public void startPlaying()
{
is= new ByteArrayInputStream(outStream.toByteArray());
int len = 1024;
byte[] buffer2 = new byte[len];
byte[] data = new byte[len];
ByteBuffer[] inputBuffers;
ByteBuffer[] outputBuffers;
ByteBuffer inputBuffer;
ByteBuffer outputBuffer;
MediaCodec.BufferInfo bufferInfo;
int inputBufferIndex;
int outputBufferIndex;
byte[] outData;
try
{
player.play();
decoder.start();
isPlaying = true;
while (isPlaying)
{
int read = is.read(data);
//===========
inputBuffers = decoder.getInputBuffers();
outputBuffers = decoder.getOutputBuffers();
inputBufferIndex = decoder.dequeueInputBuffer(-1);
if (inputBufferIndex >= 0)
{
inputBuffer = inputBuffers[inputBufferIndex];
inputBuffer.clear();
inputBuffer.put(data);
decoder.queueInputBuffer(inputBufferIndex, 0, data.length, 0, 0);
}
bufferInfo = new MediaCodec.BufferInfo();
outputBufferIndex = decoder.dequeueOutputBuffer(bufferInfo, 0);
while (outputBufferIndex >= 10000)
{
outputBuffer = outputBuffers[outputBufferIndex];
outputBuffer.position(bufferInfo.offset);
outputBuffer.limit(bufferInfo.offset + bufferInfo.size);
outData = new byte[bufferInfo.size];
outputBuffer.get(outData);
// Log.d("AudioDecoder", outData.length + " bytes decoded");
player.write(outData, 0, outData.length);
decoder.releaseOutputBuffer(outputBufferIndex, false);
outputBufferIndex = decoder.dequeueOutputBuffer(bufferInfo, 0);
}
//===========
}
decoder.stop();
player.stop();
}
catch (Exception e)
{
}
}
private int initAudioRecord()
{
try
{
int min_buffer_size = AudioRecord.getMinBufferSize(SAMPLE_RATE, CHANNEL_CONFIG, AUDIO_FORMAT);
int buffer_size = SAMPLES_PER_FRAME * 10;
if (buffer_size < min_buffer_size)
buffer_size = ((min_buffer_size / SAMPLES_PER_FRAME) + 1) * SAMPLES_PER_FRAME * 2;
recorder = new AudioRecord(
MediaRecorder.AudioSource.MIC, // source
SAMPLE_RATE, // sample rate, hz
CHANNEL_CONFIG, // channels
AUDIO_FORMAT, // audio format
buffer_size); // buffer size (bytes)
}
catch (Exception e)
{
Log.v("error", "rate" );
}
return -1;
}
public boolean setEncoder() throws Exception
{
encoder = MediaCodec.createEncoderByType("audio/mp4a-latm");
MediaFormat format = new MediaFormat();
format.setString(MediaFormat.KEY_MIME, "audio/mp4a-latm");
format.setInteger(MediaFormat.KEY_CHANNEL_COUNT, channels);
format.setInteger(MediaFormat.KEY_SAMPLE_RATE, sampleRate);
format.setInteger(MediaFormat.KEY_BIT_RATE, bitRate );//AAC-HE 64kbps
format.setInteger(MediaFormat.KEY_AAC_PROFILE, MediaCodecInfo.CodecProfileLevel.AACObjectHE);
encoder.configure(format, null, null, MediaCodec.CONFIGURE_FLAG_ENCODE);
initAudioRecord();
return true;
}
public boolean setDecoder() throws Exception
{
decoder = MediaCodec.createDecoderByType("audio/mp4a-latm");
MediaFormat format = new MediaFormat();
format.setString(MediaFormat.KEY_MIME, "audio/mp4a-latm");
format.setInteger(MediaFormat.KEY_CHANNEL_COUNT, channels/*1*/);
format.setInteger(MediaFormat.KEY_SAMPLE_RATE, sampleRate/*44100*/);
format.setInteger(MediaFormat.KEY_BIT_RATE, bitRate/*128000*/ );//AAC-HE 64kbps
format.setInteger(MediaFormat.KEY_AAC_PROFILE, MediaCodecInfo.CodecProfileLevel.AACObjectHE);
decoder.configure(format, null, null, 0);
setPlayer(sampleRate);
return true;
}
public boolean setPlayer(int rate)
{
int bufferSizePlayer = AudioTrack.getMinBufferSize(rate, AudioFormat.CHANNEL_OUT_MONO, audioFormat);
Log.d("====buffer Size player ", String.valueOf(bufferSizePlayer));
player= new AudioTrack(AudioManager.STREAM_MUSIC, rate, AudioFormat.CHANNEL_OUT_MONO, audioFormat, bufferSizePlayer, AudioTrack.MODE_STREAM);
if (player.getState() == AudioTrack.STATE_INITIALIZED)
{
return true;
}
else
{
return false;
}
}
}