At Thu, 23 Jan 2003 23:29:56 +0300, Anton Worshevsky wrote: > > Dear Takashi Iwai, > > Thursday, January 16, 2003, 12:21:42 PM, you wrote: > > >> > if someone has VIA8233, VIA8233A, VIA8233C or VIA8235 chipset, could > >> > you help the testing of the new driver? > >> > the new driver code is found at > >> > > >> > http://www.alsa-project.org/~iwai/via82xx.c > >> > >> i has VIA8235 and ALC650 codec. After installing new driver from cvs from > >> 20030113, there is following problem: > >> > >> In 5.1-channel dvd playback with xine using surround51 device, > >> i has swapped Rear and Center/lfe channels. > >> RL <-> Center, RR <-> LFE > > this can be fixed just by exchanging Rear and Center/LFE jacks > > >> i fixed this with following patch for via82xx.c > >> > >> 812,813c812,815 > >> < case 5: slots = (1<<0) | (2<<4) | (5<<8) | (3<<12) | (4<<16); break; > >> < case 6: slots = (1<<0) | (2<<4) | (5<<8) | (6<<12) | (3<<16) | (4<<20); >break; > >> --- > >> > // case 5: slots = (1<<0) | (2<<4) | (5<<8) | (3<<12) | (4<<16); break; > >> > // case 6: slots = (1<<0) | (2<<4) | (5<<8) | (6<<12) | (3<<16) | (4<<20); >break; > >> > case 5: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16); break; > >> > case 6: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16) | (6<<20); >break; > >> > >> I'm not sure that it is alsa problem, xine' may be. > > TI> hmm, it could be due to the setting of ALC650. how is the status of > TI> "Exchange Center/LFE" mixer switch? > > This switch has no effect. Strange. Usually its muted. > Now i think this is ALC650 problem. > Is there problem exist on via8235 with other codecs? the switch above is irrelevant to this behavior. sorry for confusion. but there is another register bits, and i fixed it on the cvs.
please update your alsa-kernel tree via cvs and give a try. > >> It will be nice to have a small prog for channel position testing in different > >> playback modes, because now i know no 5.1ch source other then video player. > >> In general multichannel playback has good quality now (with rc6 sound was > >> cracking). > > Can you point me to a 5.1ch test audio file where recorded signals for single > channel in known order ? > I can easily understand where center channel is playing, but understanding where > is Sub playing much more difficult task. You need big Stardestroyer for it =) well, i'm usually testing with a wav file decoded from an AC3 demo sound. the best way would be to create a file containing completely different samples (e.g. different songs) per channel... Takashi ------------------------------------------------------- This SF.NET email is sponsored by: SourceForge Enterprise Edition + IBM + LinuxWorld = Something 2 See! http://www.vasoftware.com _______________________________________________ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel
