Vorbis dev - Oct 2005 - ov_read_float vs. ov_read

Hello,

Am I missing something?

float** pcm_channels;
int bitstream;

int where = ov_pcm_tell(&vf);
-> The Result is "0";

ov_read_float(&vf, &pcm_channels, 1, &bitstream);
-> pcm_channels[0][0] is "0.000338580"

ov_pcm_seek(&vf, 0);
char* buffer = new char[2];
ov_read(&vf, buffer, sizeof(buffer), 0, 2, 1, &bitstream);
short temp = *((short*)buffer);
float test = temp / 32768.0f;
-> test is "0.000335693"

Why are the values different?
Am I doing a wrong calculation?
Or is "ov_read_float()" doing an other calculation?



Thanx,
Micha.


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On 10/9/05, 2spork@informatik.uni-hamburg.de
<2spork@informatik.uni-hamburg.de> wrote:
> Hello,
>
> Am I missing something?
Yes. Integer rounding. You'll find that ov_read_float() returns a
value (between -1 and 1), which, when multiplied by 32768, is not
exactly an integer. That's perfectly normal, and not a problem.

Mike