Re: [maemo-developers] WMA streaming
On Thursday 23 November 2006 21:02, you wrote: On Monday 13 November 2006 22:08, Andrew Barr wrote: What are my options for Windows Media Audio streams on the 770? Most Internet radio streams (I mean simulcasts of real broadcasts in this sense) are offered in (at least) this format, which is supported by free software (ffmpeg) up to version 2, the latest version I've ever seen anywhere. However, no one seems to have had any luck with third-party codecs on this device, much less for streaming. Is this device powerful enough to handle decoding audio streams using C or ARM-assembly codecs (from ffmpeg)? It's likely that the bitstream would be 16 to 24 kbps. I understand free tools for the DSP aren't quite there yet, so that may not be an option. FFmpeg library contains WMA decoder and MPlayer supports it at least on x86 desktop PC. There are some problems with its support on ARM though. First and the most easy to fix is that WMA decoder seems to have some alignment problems, so it crashes on any attempt to play WMA files. This is quite easy to workaround by running 'echo 3 /proc/cpu/alignment' as root, see https://maemo.org/maemowiki/PortingFromX86ToARM and the links at it for more information. A major problem with WMA decoder is that it uses floating point math. And having no FPU in hardware, Nokia 770 does not seem to be able to decode 128kbps WMA files to play them in realtime (sound is skippy). So it is not very useful unless somebody finds (or implements) a fixed point WMA decoder. However I also tested 20kbps WMA sample and it worked fine with CPU load at about 60%. So if anybody would like to have such low bitrate WMA files/streams supported, I can have a look at these alignment problems, fix them and release updated version of MPlayer for everyone to use. Well, the latest maemo build of MPlayer now supports WMA audio (with that extremely inefficient cpu usage and unability to play high bitrates). But it can play internet radio streams, for example running the following works: # mplayer mms://wm05.nm.cbc.ca/cbcr1-calgary-low On the other hand, standard audio player seems to support WMA files playback just fine :) Does it have problems with internet radio? Or you just tried to look for free alternatives? What was the reason for asking this WMA streaming question in the first place? ___ maemo-developers mailing list maemo-developers@maemo.org https://maemo.org/mailman/listinfo/maemo-developers
Re: [maemo-developers] WMA streaming
On Tue, 2006-11-28 at 10:48 +0200, Siarhei Siamashka wrote: Well, the latest maemo build of MPlayer now supports WMA audio (with that extremely inefficient cpu usage and unability to play high bitrates). But it can play internet radio streams, for example running the following works: # mplayer mms://wm05.nm.cbc.ca/cbcr1-calgary-low On the other hand, standard audio player seems to support WMA files playback just fine :) Does it have problems with internet radio? Or you just tried to look for free alternatives? What was the reason for asking this WMA streaming question in the first place? I was unaware that the standard audio player played WMA at all...I knew it played RealPlayer streams but in the past I'd had problems with it. I tried a few Real streams and they did seem to work...never tried the WMA though. Free alternatives are always better but if it works I suppose it is fine for now. I wouldn't have asked if I knew that the standard audio player did WMA. /Andrew ___ maemo-developers mailing list maemo-developers@maemo.org https://maemo.org/mailman/listinfo/maemo-developers
Re: [maemo-developers] WMA streaming
On Tue, 2006-28-11 at 10:48 +0200, Siarhei Siamashka wrote: On Thursday 23 November 2006 21:02, you wrote: Well, the latest maemo build of MPlayer now supports WMA audio (with that extremely inefficient cpu usage and unability to play high bitrates). But it can play internet radio streams, for example running the following works: # mplayer mms://wm05.nm.cbc.ca/cbcr1-calgary-low On the other hand, standard audio player seems to support WMA files playback just fine :) Does it have problems with internet radio? Or you just tried to look for free alternatives? What was the reason for asking this WMA streaming question in the first place? I certainly can't seem to stream this directly from the audio player. Mplayer yes but not the 770 audio player. -- George Farris [EMAIL PROTECTED] ___ maemo-developers mailing list maemo-developers@maemo.org https://maemo.org/mailman/listinfo/maemo-developers
Re: [maemo-developers] WMA streaming
On Monday 13 November 2006 22:08, Andrew Barr wrote: What are my options for Windows Media Audio streams on the 770? Most Internet radio streams (I mean simulcasts of real broadcasts in this sense) are offered in (at least) this format, which is supported by free software (ffmpeg) up to version 2, the latest version I've ever seen anywhere. However, no one seems to have had any luck with third-party codecs on this device, much less for streaming. Is this device powerful enough to handle decoding audio streams using C or ARM-assembly codecs (from ffmpeg)? It's likely that the bitstream would be 16 to 24 kbps. I understand free tools for the DSP aren't quite there yet, so that may not be an option. FFmpeg library contains WMA decoder and MPlayer supports it at least on x86 desktop PC. There are some problems with its support on ARM though. First and the most easy to fix is that WMA decoder seems to have some alignment problems, so it crashes on any attempt to play WMA files. This is quite easy to workaround by running 'echo 3 /proc/cpu/alignment' as root, see https://maemo.org/maemowiki/PortingFromX86ToARM and the links at it for more information. A major problem with WMA decoder is that it uses floating point math. And having no FPU in hardware, Nokia 770 does not seem to be able to decode 128kbps WMA files to play them in realtime (sound is skippy). So it is not very useful unless somebody finds (or implements) a fixed point WMA decoder. However I also tested 20kbps WMA sample and it worked fine with CPU load at about 60%. So if anybody would like to have such low bitrate WMA files/streams supported, I can have a look at these alignment problems, fix them and release updated version of MPlayer for everyone to use. ___ maemo-developers mailing list maemo-developers@maemo.org https://maemo.org/mailman/listinfo/maemo-developers
[maemo-developers] WMA streaming
Hello, What are my options for Windows Media Audio streams on the 770? Most Internet radio streams (I mean simulcasts of real broadcasts in this sense) are offered in (at least) this format, which is supported by free software (ffmpeg) up to version 2, the latest version I've ever seen anywhere. However, no one seems to have had any luck with third-party codecs on this device, much less for streaming. Is this device powerful enough to handle decoding audio streams using C or ARM-assembly codecs (from ffmpeg)? It's likely that the bitstream would be 16 to 24 kbps. I understand free tools for the DSP aren't quite there yet, so that may not be an option. -- Andrew Barr Men go crazy in congregations they only get better one by one. -- Sting, All This Time (The Soul Cages, 1991) ___ maemo-developers mailing list maemo-developers@maemo.org https://maemo.org/mailman/listinfo/maemo-developers
