--- Matt Funk <[EMAIL PROTECTED]> wrote:
> Hi all,
>
> I'm attempting to encode raw audio data using libFLAC++. My audio
> data
> is 16 bit, mono, 16000Hz. I set all the appropriate parameters on the
> encoder and then call init(). Everything appears to be ok.
>
> I don't know how to properly convert from char *data to the
> FLAC__int32
> *[] requested by the process function. I think this is where my
> problem
> is.
>
> If I call process() like this:
>
> FLAC__int32 *samplesArray[1] = { (FLAC__int32 *)data };
>
> // data size if 4096 bytes
> if (!process(samplesArray, 1024))
> die("return false");
>
> it appears to encode ok, but when I play the flac file, it plays at
> twice the normal speed. I can cheat and tell the encoder that the
> sample
> rate is really 8000 Hz when in reality its 16KHz and it plays ok.
>
> So my question is how to convert from char *data to FLAC__int32*
> data?
> I've been looking at encode.c but I'm confused by it (my c skills
> aren't
> fantastic)
if samples are 16bps, why is 'data' a char*, not a short int* or
FLAC__int16* ?
you will first have to convert the 16-bit samples to 32-bit signed.
assuming they are signed short ints (FLAC__int16 *data):
const unsigned N = 1024;
FLAC__int32 *samplesArray[1] = { new FLAC__int32[N] };
for (unsigned i = 0; i < N; i++)
samplesArray[0][i] = data[i];
if (!process(samplesArray, 1024))
die("return false");
delete [] samplesArray;
__________________________________
Do you Yahoo!?
Yahoo! Mail - Helps protect you from nasty viruses.
http://promotions.yahoo.com/new_mail
-------------------------------------------------------
This SF.Net email is sponsored by The 2004 JavaOne(SM) Conference
Learn from the experts at JavaOne(SM), Sun's Worldwide Java Developer
Conference, June 28 - July 1 at the Moscone Center in San Francisco, CA
REGISTER AND SAVE! http://java.sun.com/javaone/sf Priority Code NWMGYKND
_______________________________________________
Flac-dev mailing list
[EMAIL PROTECTED]
https://lists.sourceforge.net/lists/listinfo/flac-dev
