RE: OGG decoding/multi-channel mixing
Joost Meijles <[email protected]>
| Newsgroups | gmane.comp.multimedia.ogg.vorbis.general |
|---|---|
| Message-ID | <[email protected]> |
Hi All, Thanks a lot for the many responses, they are very helpful to me (they made me enthousiastic about Ogg and the community). > > First of all how difficult is it to decode OGG on an ARM7/9 processor?> > At last check on an ARM7TDMI, Tremor mainline required about 40-45MHz> for stereo decode of one stream, assuming a setup using slow offboard> DRAM at 7-14 wait states and using on-board fast SRAM as a random> replacement cache.40-45 Mhz sounds like quite a lot, is this for optimized code? I know that for decoding MP3 around 9 Mhz is needed, when using optimized code. How does using mono, effects the CPU usage? Does it half the requirement to around 20 Mhz? > Summarizing from a number of replies: mixing multiple streams in the time domain seems to be easier (or at all possible) compared to > the frequency domain Does anyone know of an implementation that has been created for Ogg (preferably capable of running on ARM) that provides mixing of multiple streams? I understood that somehow a Tremor implementation is available, but I did not quite understand that. Thanks a lot in advance. Kind regards, Joost _________________________________________________________________ Via je PC gratis je vrienden hun PC bellen http://get.live.com/messenger/overview _______________________________________________ Vorbis mailing list [email protected] http://lists.xiph.org/mailman/listinfo/vorbis