声音抖动问题,哥哥们快来帮帮我啊,搞了一个礼拜了!

[heeb123]

我目前做一个g.729的语音传输程序，利用一个rtp库的发送和接收代码，不过我用Ethereal收集发送前的payload（只是本地打成包还没有发送），利用我自己做的一个播放g.729的软件（软件是好的能用，我验证过了）播放怎么就有问题啊，声音很不好。下面我把部分代码贴出来，请高手们、哥哥姐姐弟弟妹妹们帮帮我吧，谢谢了，有消息可以加我msn：[e-mail]
case MM_WIM_DATA:
WAVEHDR* pWH=(WAVEHDR*)msg.lParam;
waveInUnprepareHeader((HWAVEIN)msg.wParam,pWH,sizeo(WAVEHDR));
if(pWH->dwBytesRecorded!=SIZE_AUDIO_FRAME)
break;
memcpy(buffer,pWH->lpData,pWH->dwBytesRecorded);
buffer[pWH->dwBytesRecorded]='\0';
pWaveIn->GetData (buffer ,pWH->dwBytesRecorded );
(对收集到的声音进行处理)
waveInPrepareHeader((HWAVEIN)msg.wParam,pWH,sizeof(WAVEHDR));
waveInAddBuffer((HWAVEIN)msg.wParam,pWH,sizeof(WAVEHDR));

[happydgm]

程序没看出什么问题。抖动一般由于发包间隔不均匀造成的，不知道你的发包间隔是如何计算的，这个是比较关键的问题。

[heeb123]

void CWaveIn::GetData(char *pBuffer,int iLen)
{


char pBuffOut[1024] = "";
int iLenOut;
CAudioCode cAudioCode;

memset(pBuffOut, '\0', 1024);

rtpTimeSendStamp=rtpTimeSendStamp+160;


switch(getRtpPayload())
{
case 18 :
if(!cAudioCode.EncodeAudioData(pBuffer, iLen, pBuffOut, &iLenOut))//(进行g729编码)
{

printf("G729 encode error!\n");
return;
}
pBuffOut[iLenOut]='\0';
break;
default :
memcpy(pBuffOut, pBuffer, iLen);
iLenOut = iLen;
break;
}
appRtpSend((UINT8 *)pBuffOut, iLenOut, rtpTimeSendStamp);//调用rtp发送程序

}

[Eddie005]

顶~~

[heeb123]

void appRtpSend(UINT8 * rtpBuffer, UINT32 bufLength, UINT32 rtpTimeStamp)
{
HRTPSESSION rtp_handle = artpParam.rtpHandle;
// HRTCPSESSION rtcp_handle = artpParam.rtcpHandle;
rtpParam rtp_param;
UINT8 rtp_buffer[RTP_BUFF_SIZE]="";
UINT32 buf_length;

memset(rtp_buffer, '\0', RTP_BUFF_SIZE);
rtp_param.timestamp = rtpTimeStamp;
rtp_param.marker = FALSE;
// rtp_param.marker = TRUE;
rtp_param.payload = artpParam.rtpPayload;
rtp_param.sByte = rtpG729GetHeaderLength();

memcpy((rtp_buffer+rtp_param.sByte), rtpBuffer, bufLength);
buf_length = rtp_param.sByte + bufLength;
rtp_buffer[buf_length]='\0';
switch(rtp_param.payload)
{
case 18:
rtpG729Pack(rtp_buffer, buf_length, &rtp_param, 0);
break;
default:
break;
}
rtpWrite(rtp_handle, rtp_buffer, buf_length, &rtp_param);//rtp库函数
//在这里面进行添加rtp包头

//rtcpRTPPacketSent(rtcp_handle, rtp_param.len, rtp_param.timestamp);
}

[heeb123]

发送流程我就这么走的:
收集->调用appRtpSend进行发送,大牛们帮帮我吧-_-!

[heeb123]

不要光顶啊,哥哥呵呵要想办法帮帮我啊

[dodont]

..........还以为是要做量化时的抖动.........