is there a way to convert an audio file into a char array?

[Gary Kline]

On Thu, Dec 31, 2009 at 01:52:07PM -0500, Lowell Gilbert wrote:
> Gary Kline <kline at thought.org> writes:
> 
> > 	In working toward my goal of writing a keyboard driver with builtin
> > 	clicks, I'm investigating different angles.  One would be to find
> > 	existing audio files and catting then thru /dev/dsp.  
> >
> > 	Is there a way of turning any audio file/format into a character
> > 	array---in the way that a graphic can be turned into a character
> > 	array?
> > 	
> > 	For example, I turned the graphic of a small arrow to the following:
> >
> > unsigned char uparrow_bits[] = {
> >    0x80, 0x01, 0xc0, 0x03, 0xe0, 0x07, 0xf0, 0x0f, 0xf8, 0x1f, 0xfc, 0x3f,
> >    0xfe, 0x7f, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x1f, 0xf8, 0x1f, 0xf8, 0x1f};
> >
> > 	Are there tools to do the same with a .au or .wav file?
> 
> od(1), but that would be silly.  Just have your program open the file
> and read it in.
> 


	Yeah, I views the file with od -c; but wouldn't it be much faster
	to have the data file part of my test program than having to open,
	read, cat thru /dev/dsp each time, close file?  I stole the cat
	from the K&R book, and by reading the click.h data file it seems
	everything would go much faster.

	(I have three actual keyboard click drivers that I'm paring down,
	just wondering in my pre-built click file wouldn't be a better
	option.  It's got a seriously beautiful waveform.

> -- 
> Lowell Gilbert, embedded/networking software engineer, Boston area
> 		http://be-well.ilk.org/~lowell/

-- 
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