网络视频发送的问题 ( 积分: 200 )

C

cwzcwz

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• 2007-02-03

• #1

小弟初学Delphi,从采集卡返回此函数
procedure StreamDirectReadCallback(channelNumber: ULong;
DataBuf: PChar;
Length: DWord;
FrameType: Integer;
context: Pointer);
cdecl;
请问如何将DataBuf: PChar;
Length: DWord;转成IdUDP可以发送和接收的类型idUDPS.SendBuffer;呢?望给出demo

 

L

l_x_dong

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• 2007-02-03

• #2

将PChar转为byte类型的进行发送
呵呵，demo就没有了

 

C

cwzcwz

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• 2007-02-03

• #3

如何转呢?
只要告诉我如何转成idUDPS.SendBuffer可以发送的类型就可以了,谢谢!

 

壁

壁画

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• 2007-02-03

• #4

直接发送不可以？
procedure TForm1.Button1Click(Sender:TObject);
var DataBufChar;
LengthWord;
begin

IdUDPServer1.SendBuffer ('192.168.107.11',1111,databuf,length);
end;

 

C

cwzcwz

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GUEST, unregistred user!

• 2007-02-03

• #5

直接发送后接收方的sizeof(databuf)=4

 

壁

壁画

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• 2007-02-03

• #6

procedure TForm1.Button1Click(Sender:TObject);
var DataBufChar;
LengthWord;
tstr:string;
begin

tstr:=DataBuf;
IdUDPServer1.SendBuffer ('192.168.107.11',1111,tstr,length);
end;

 

L

l_x_dong

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• 2007-02-03

• #7

DataBuf是缓冲区首地址，是个指针，并不是返回的数据
你必须先获取数据才能发送

 

L

leozem

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• 2007-02-09

• #8

将获得的指针发送出去即可

 

C

cwzcwz

Unregistered / Unconfirmed

GUEST, unregistred user!

• 2007-02-09

• #9

多人接受答案了。