Vorbis dev - May 2006 - Speed up?

Hello,

hope you're fine.
And hopefully someone can help me.
I wrote a short demonstration to show you my problem (see below). I'm 
asking always for 64 samples. When "ov_read_float()" is finished, I 
want to seek back to sample 1, and ask immediately for the next 64 
samples.
But when I run this small app, I get an totally high CPU load.

Is there a way to it speed up?
Or do I miss something?

Thanx,
Micha.


int _tmain(int argc, _TCHAR* argv[]){
	OggVorbis_File  vf;

	errno_t err;
	if ( (err = fopen_s( &oggaudio, "C:\\Test\\3.ogg" ,
"rb")) != 0){
		std::cout << "fopen problem" << std::endl;
	}

	if ( ov_open( oggaudio, &vf, NULL, 0 ) < 0 ){
		std::cout << "ov_open problem" << std::endl;
	}

	int read = 0;
	float** ovdata;
	int current_section = 0;

	do{
		read = ov_read_float(&vf , &ovdata, 64, &current_section);

		if ( read == 0 ){
			ov_pcm_seek( &vf, 0 );  // ov_raw_seek() won't help
			read = ov_read_float(&vf, &ovdata, 64, &current_section);
		}
	} while (read != 0);

	return 0;
}

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On 5/11/06, 2spork@informatik.uni-hamburg.de
<2spork@informatik.uni-hamburg.de> wrote:
> Hello,
>
> hope you're fine.
> And hopefully someone can help me.
> I wrote a short demonstration to show you my problem (see below). I'm
> asking always for 64 samples. When "ov_read_float()" is finished,
I
> want to seek back to sample 1, and ask immediately for the next 64
> samples.
> But when I run this small app, I get an totally high CPU load.
Your application is a loop that decodes vorbis as fast as possible,
then when it gets to the end, it restarts.

If you speed it up, it'll STILL run forever, and use 100% cpu while
it's doing that.

Is there a particular problem you're trying to solve in a real
application? If you explain that, we might be able to help (as a
reference point: decoding 44.1kHz stereo vorbis takes less than 1% cpu
for me, on average).

Mike