On Tue, Jan 07, 2003 at 05:02:53PM +0100, Takashi Iwai wrote: > At Thu, 2 Jan 2003 22:22:34 -0600, > Troy Benjegerdes wrote: > > > > I have a mac G4 (running debian testing), a ymfpci card (MaxiSound > > Fortissimo) with optical TOSlink out, and a yamaha HTR-5540 receiver with > > digital optical TOSlink input. > > > > I'm trying to get xine or some other DVD player to output AC/3 sound to > > the receiver for watching dvd's, and I have a couple of problems. > > > > 1) xmms (and xine 2-channel sound) works with OSS emulation, but is static > > with native ALSA drivers. This seems like some endian problem > > then most likely it's a bug of alsa output plugin.
It seems the latest xmms source uses 'S16_NE' (which is S16_BE on big-endian platforms) as the pcm format, which works correctly. alsa-tools/acdec/output.c also has a problem.. it uses S16_LE on big-endian platforms. I am able to successfully open the SPDIF output and output *something* with a commandline like: ac3dec -D hw:0,0 -C THX.ac3 However, the hardware decoder (yamaha receiver) is getting garbled data and plays what sounds like stacatto static. ac3dec -C THX.ac3 gives the following: Using PCM device 'iec958:AES0=0x2,AES1=0x82,AES2=0x0,AES3=0x2' ALSA lib pcm_hw.c:292:(snd_pcm_hw_hw_params) SNDRV_PCM_IOCTL_HW_PARAMS failed: No such device or address PCM hw_params failed: No such device or address Output open failed Another interesting bit... If I change S16_LE to S16_BE in output.c, now it works with regular 2 channel audio, but anything with the '-C' option gives: Using PCM device 'hw:0,0' Sample format non availableOutput open failed Using PCM device 'iec958:AES0=0x2,AES1=0x82,AES2=0x0,AES3=0x2' Sample format non availableOutput open failed Should the alsa drive be able to byteswap SPDIF data?? -- -------------------------------------------------------------------------- Troy Benjegerdes 'da hozer' [EMAIL PROTECTED] Somone asked my why I work on this free (http://www.fsf.org/philosophy/) software stuff and not get a real job. Charles Shultz had the best answer: "Why do musicians compose symphonies and poets write poems? They do it because life wouldn't have any meaning for them if they didn't. That's why I draw cartoons. It's my life." -- Charles Shultz ------------------------------------------------------- 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
