Wave vizualization and recordind

Question

Hi.

I am from Russia, and I small speak English.
I have a question.

Sample - It is a test audio visualization and audio recording test (link on source code I put below).
I am take a samples for recording audio from internet.
And I take a other source for audio visualization.
The imaging audio occurs on event "OnWaveIn".

My trouble:
On ditto event occurs and record audio.
So here is: if press on button "Record", that occur the error ("Access violation at address ..."), but if comment part of code:

{
 WaveInAddBuffer(WaveIn, PWaveHdr(Msg.lParam),SizeOf(TWaveHdr));
 data16:=PData16(PWaveHdr(Msg.lParam)^.lpData);

 move(data16^[0],m,BufSize*2);
 // if data16^[0]<>m[1]
 // then showMessage('skipped');
}

that record goes orderly, but not vizualize wave audio.
If you are know to possible my problem, please ask me about solve trouble with combine the visual image audio and simultaneous its record.

Link to sample of source code: http://chaser.front.ru/WaveVizRecorder.zip

Thanks for your help!
Mersi )

Guillemouze · Answer

WhiteHippo · Answer

Hi

This is a french forum !  I'll answer you in english but it's the last time !! 
The problem seems to be on your "move(data16^[0],m,BufSize*2);" 
You have to take care of the length of the datas received, something like that :
    move(data16^[0],m,PWaveHdr(Msg.lParam)^.dwBufferLength);

P.S. No time to go deeper in your code to see if something else is wrong. 

Cordialement. 
<hr />"L'imagination est plus importante que le savoir." Albert Einstein

Chaser_DS · Answer

Thanks WhiteHippo for help!
But with this correction "move(data16^[0],m,PWaveHdr(Msg.lParam)^.dwBufferLength)" the error does not appear, but recorded wav file is play as cheep, rather then as sounds when recording.
Can help someone else with this trouble?

Wave vizualization and recordind

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