C / C++ / MFC

1-Apr-04 20:52

can anybody guide me to write c or c++ code to play an raw audio files

thank you
bye
sham

Alexander ^M.,1-Apr-04 22:54

Alexander ^M.,

1-Apr-04 22:54

create a buffer with the characteristics of the raw sound (srate, bits etc) then copy the data in and start playing it.

Don't try it, just do it! Wink | ;-)

shiva shankar1-Apr-04 23:30

1-Apr-04 23:30

i didn't get what your are trying say. please an you be more specfic.

Alexander ^M.,2-Apr-04 0:06

Alexander ^M.,

2-Apr-04 0:06

I propose that you use DirectSound.
You create a buffer with the specifications of the wave data (sample rate, bits/blocksize, ...), then you lock the buffer, copy the data in, unlock it and then start playback. read the sdk for further information.

Don't try it, just do it! Wink | ;-)

Dimenser2-Apr-04 14:10

Dimenser

2-Apr-04 14:10

Here's what I do in Visual C++ 6.0.
1. Import the .wav file and name it something you'll remember, like IDR_BADBEEP.
2. Add #include "mmsystem.h" to the top of your file.
3. In Project/Settings/Link, add Winmm.lib
4. In the actual code where I want the sound effect to play, add:
PlaySound(MAKEINTRESOURCE(IDR_BADBEEP),GetModuleHandle(NULL),SND_RESOURCE | SND_ASYNC);

This will play the sound effect until the program is shut down, the sound effect is entirely played, or another sound effect is started. It's easy and works. Cool | :cool:

Dimenser

shiva shankar5-Apr-04 23:40

5-Apr-04 23:40

suggestion which you have given it support for only .wav file ,but i need to play .raw files at some sampling rate(Fs=8000).plz guide me.

avenger_sb255-Apr-04 10:57

avenger_sb25

5-Apr-04 10:57

simple, to play a .wav file in VC++ use

PlaySound(...) function //look for the parameters at www.msdn.com

And dont forget to include the winmm.lib in the project settings.

^{Remember... testing & debugging are always part of programming ...so exterminate those stinking bugs}

shiva shankar5-Apr-04 23:37

How to find - which area of Window made "invalid" ?

5-Apr-04 23:37

but i want play this raw with some sampling rate(Fs=8000), i don't thing this would support it.

std::string related

Imtiaz Murtaza1-Apr-04 20:22

Imtiaz Murtaza

1-Apr-04 20:22

Hi!

I have an std::string object;

std::string messages = "MSG Go and have a lunch. MSG Hi how are youMSG are you fine";

In this string i expect there are many messages and each message starts with "MSG" and ends till next "MSG" is found. I want to separate all these messages. How can i do so ??

Imtiaz

Re: std::string related

Paul Ranson2-Apr-04 1:43

Paul Ranson

2-Apr-04 1:43

For example (untested...),

std::string::size_type p = messages.find ( "MSG" ) ;
std::string::size_type p2 = std::string::npos ;
while ( p != std::string::npos )
{
   p2 = messages.find ( "MSG", p + 1 ) ;
   // p -> p2 is a message
   DoMessage ( message.substr ( p, p2 )) ;
   p = p2 ;
}

Paul

Re: std::string related

Maxwell Chen2-Apr-04 1:53

Maxwell Chen

2-Apr-04 1:53

Nice method. Thanks! Big Grin | :-D

The below is tested one.

void main()
{
	std::string messages = "MSG: Apple. MSG: Banana.";
	std::string::size_type p = messages.find ( "MSG" ) ;
	std::string::size_type p2 = std::string::npos ;
	while ( p != std::string::npos )
	{
		p2 = messages.find ( "MSG", p + 1 ) ;
		// p -> p2 is a message
		string ss = messages.substr ( p, p2 );
		cout << ss << endl;
		p = p2 ;
	}
}

Maxwell Chen

vgrigor1-Apr-04 20:01

Re: How to find - which area of Window made "invalid" ?

1-Apr-04 20:01

How to find - which area of Window made "invalid" ?

When else window moves over my CDialog,
I need to find which area is declared as "invalid",
to redraw background of appropiate childs,
but nt All each time.

- in OnEreaseBackground(CDC* pDC)

Thanks.

Prakash Nadar1-Apr-04 21:45

Re: How to find - which area of Window made "invalid" ?

1-Apr-04 21:45

GetUpdateRect(..);

might be of some help to you.

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vgrigor1-Apr-04 21:51

Re: How to find - which area of Window made "invalid" ?

1-Apr-04 21:51

Thanks.

How to set for control another Client area ?

Prakash Nadar1-Apr-04 22:44

Re: How to find - which area of Window made "invalid" ?

1-Apr-04 22:44

vgrigor wrote:
How to set for control another Client area ?

I didnt get your question.

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vgrigor1-Apr-04 22:49

Re: How to find - which area of Window made "invalid" ?

1-Apr-04 22:49

Need to enlarge child window area,
ao hay react according to event on that other area.

Prakash Nadar1-Apr-04 22:53

Re: How to find - which area of Window made "invalid" ?

1-Apr-04 22:53

If you have the pointer to the child window or a window handle to that child window then you can use SetWindowRect(...) to resize the window.

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vgrigor1-Apr-04 23:04

Re: How to find - which area of Window made "invalid" ?

1-Apr-04 23:04

thanks, but it is need to get size to
draw as previously.

But react as bigger thing.

some clipRect function does not that ?

Prakash Nadar1-Apr-04 23:15

Re: How to find - which area of Window made "invalid" ?

1-Apr-04 23:15

Sorry i am out of ideas Frown | :-(

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vgrigor1-Apr-04 23:19