private void StartSendAudio() {
// 8Khz 16bit 采样, iLBC 20ms encoder/decoder; iLbcEncSize=320byte
int bytesRecord = 0, bytesEncoded = 0;
long t_capture = 0;
long t_process = 0;
long delay = 0;
short[] ecBuffer = new short[iLbcEncSize / 2];
short[] outBuffer = new short[iLbcEncSize / 2];
byte[] pcmOut = new byte[iLbcEncSize];
byte[] samples = new byte[iLbcEncSize];
byte[] data = new byte[iLbcDecsize];
while (isRecording == true) {
// gp 有新生成文件标记时，生成新文件。
if (newFileFLag == true) {
newFileFLag = false;
new File(soundFNameString);
try {
braf = new RandomAccessFile(soundFNameString, "rw");
} catch (FileNotFoundException e) {
e.printStackTrace();
}
}
if (braf == null) // null时，什么也不做但是循环继续
continue;
t_capture = (new Date()).getTime();
bytesRecord = audioRecord.read(samples, 0, iLbcEncSize);
ByteBuffer.wrap(samples).order(ByteOrder.LITTLE_ENDIAN).asShortBuffer().get(ecBuffer);
t_process = (new Date()).getTime();
delay = (t_process - t_capture) + m_aecm.recvDelay; // 在类中多定义了一个变量
try {
m_aecm.echoCancellation(
ecBuffer, null, outBuffer, (short) (iLbcEncSize / 2), (short) (delay + 40));
} catch (Exception e1) {
e1.printStackTrace();
}
if (AudioRecord.ERROR_INVALID_OPERATION != bytesRecord) {
ByteBuffer.wrap(pcmOut).order(ByteOrder.LITTLE_ENDIAN).asShortBuffer().put(outBuffer);
bytesEncoded = AudioCodec.iLbcencode(pcmOut, 0, bytesRecord, data, 0);
try {
braf.write(data, 0, bytesEncoded);
} catch (IOException e) {
e.printStackTrace();
}
}
AudioCodec.iMVRSleepMS(10);
}
braf = null;
soundFNameString = null;
newFileFLag = false;
}
public void run() {
audioRecord.startRecording();
AudioCodec.iLbcinit(20);
this.isRecording = true;
StartSendAudio();
if (audioRecord != null) {
audioRecord.stop();
audioRecord.release(); // 释放资源
audioRecord = null;
}
isRecording = false;
}