Hello All, I've an embedded system question... Anyone used a floating point DSP to do Vorbis encoding? (eg TMS320C67xx) I'd like to do as many mono channels as poss at maybe 16 or 22kHz sample rate. There's a cripplingly expensive AAC library function which reckons to do 6 or more channels on one of these chips, so I guess I'll get something similar doing verbs. Any advice? Also, I'm planning to do it without an OS, so I guess I can't use libvorbis (?) Yes, I know it's good for the soul to start from scratch anyway. This is wild-blue-yonder-stuff as far as I'm concerned, so a little shared experience would be much appreciated. -- andy --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to 'vorbis-request@xiph.org' containing only the word 'unsubscribe' in the body. No subject is needed. Unsubscribe messages sent to the list will be ignored/filtered.
At 11:53 AM 10/11/02 +0100, you wrote:>Hello All, I've an embedded system question... > >Anyone used a floating point DSP to do Vorbis encoding? (eg TMS320C67xx) >I'd like to do as many mono channels as poss at maybe 16 or 22kHz sample >rate. There's a cripplingly expensive AAC library function which >reckons to do 6 or more channels on one of these chips, so I guess I'll >get something similar doing verbs. Any advice?I hope the compiler has improved a lot since I last used it (~1999), since back then it was a total bitch. This should be perfectly doable, though. Making it work shouldn't be hard, the challenge will be speed - though this depends on how fast your 'C67 is. One or two channels realtime should fall out with very little work, 6 channels plus may require customisation. But I haven't used these chips in a while, so... my advice may be outdated.> >Also, I'm planning to do it without an OS, so I guess I can't use >libvorbis (?) Yes, I know it's good for the soul to start from scratch >anyway.No. libvorbis is designed to be highly portable. You may need to make some minor alterations (mostly to header includes or defines, or perhaps none at all), but libvorbis should work. Mike --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to 'vorbis-request@xiph.org' containing only the word 'unsubscribe' in the body. No subject is needed. Unsubscribe messages sent to the list will be ignored/filtered.
andy wrote: <p>> To: vorbis@xiph.org> From: andy <andy@tecton2.demon.co.uk> > Disposition-Notification-To: andy <andy@tecton2.demon.co.uk><p>Asking for an MDN on a public mailing list is extremely impolite. Stop it, or tell your mailer to stop it. Thank you. <p><p>Segher --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to 'vorbis-request@xiph.org' containing only the word 'unsubscribe' in the body. No subject is needed. Unsubscribe messages sent to the list will be ignored/filtered.