Hello, I have also been attempting to use Dolby Digital passthru with my Turtle Beach Santa Cruz. Unfortunately I have not yet been successful. For these tests I am using todays (March 16) CVS of alsa-kernel, alsa-driver and alsa-lib. For xine I'm using xine-lib-1-beta8, compiled with todays ALSA CVS.
In my tests I have had two different results: 1) No sound 2) A clicking sound (described by another user as "cards in a bike") For the times I get this sound, it's normally about 4-6 beats-per-second (or so), but if I unmute "IEC958 Input" it nearly doubles (about 8-12 beats-per-second). ------------------ Here's the relevant console output from xine when I start playing a movie: liba52:No accelerated IMDCT transform found audio_alsa_out: Audio Device name = iec958:AES0=0x6,AES1=0x82,AES2=0x0,AES3=0x2 audio_alsa_out: Number of channels = 2 audio_alsa_out:open pause_resume=0 stream : PLAYBACK access : RW_INTERLEAVED format : S16_LE subformat : STD channels : 2 rate : 48000 exact rate : 48000 (48000/1) msbits : 16 buffer_size : 16384 period_size : 512 period_time : 10666 tick_time : 10000 tstamp_mode : NONE period_step : 1 sleep_min : 0 avail_min : 512 xfer_align : 1 start_threshold : 512 stop_threshold : 16384 silence_threshold: 0 silence_size : 0 boundary : 1073741824 start_mode: DATA xrun_mode: STOP tstamp_mode: NONE period_step: 1 sleep_min: 0 avail_min: 512 xfer_align: 1 silence_threshold: 0 silence_size: 0 boundary: 1073741824 metronom: fixing sound card drift by -1544 pts audio_alsa_out:write:BAD STATE, state = 1 audio_alsa_out:write:BAD STATE2, state = 1, going to try XRUN audio_alsa_out:write:BAD STATE, state = 1 audio_alsa_out:write:BAD STATE2, state = 1, going to try XRUN ------------------ Here's my syslog output when I start and stop a AC3 stream (with either xine or ac3dec [-C/-P]): Mar 16 12:54:17 darkstar kernel: ALSA ../../alsa-kernel/pci/cs46xx/cs46xx_lib.c: 1430: open raw iec958 channel Mar 16 12:54:17 darkstar kernel: ALSA ../../alsa-kernel/pci/cs46xx/dsp_spos_scb_ lib.c:226: cs46xx_dsp_proc_free_scb_desc: freeing PCMSerialInput_II Mar 16 12:54:17 darkstar kernel: ALSA ../../alsa-kernel/pci/cs46xx/dsp_spos_scb_ lib.c:226: cs46xx_dsp_proc_free_scb_desc: freeing AsynchFGTxSCB Mar 16 12:54:17 darkstar kernel: ALSA ../../alsa-kernel/pci/cs46xx/dsp_spos_scb_ lib.c:290: dsp_spos: creating SCB <AsynchFGTxSCB> Mar 16 12:54:17 darkstar kernel: ALSA ../../alsa-kernel/pci/cs46xx/dsp_spos_scb_ lib.c:1178: IEC958 pass through Mar 16 12:54:17 darkstar kernel: ALSA ../../alsa-kernel/pci/cs46xx/dsp_spos_scb_ lib.c:1243: dsp_spos: creating SRC "SrcTask_SCB0" Mar 16 12:54:17 darkstar kernel: ALSA ../../alsa-kernel/pci/cs46xx/dsp_spos_scb_ lib.c:597: dsp_spos: setting SrcTask_SCB0 rate to 48000 Mar 16 12:54:17 darkstar kernel: ALSA ../../alsa-kernel/pci/cs46xx/dsp_spos_scb_ lib.c:290: dsp_spos: creating SCB <SrcTask_SCB0> Mar 16 12:54:17 darkstar kernel: ALSA ../../alsa-kernel/pci/cs46xx/dsp_spos_scb_ lib.c:1268: dsp_spos: creating PCM "PCMReader_SCB0" (5) Mar 16 12:54:17 darkstar kernel: ALSA ../../alsa-kernel/pci/cs46xx/dsp_spos_scb_ lib.c:290: dsp_spos: creating SCB <PCMReader_SCB0> Mar 16 12:54:17 darkstar kernel: ALSA ../../alsa-kernel/pci/cs46xx/cs46xx_lib.c: 1001: period_size (2048), periods (32) buffer_size(65536) Mar 16 12:54:27 darkstar kernel: ALSA ../../alsa-kernel/pci/cs46xx/cs46xx_lib.c: 1446: close raw iec958 channel Mar 16 12:54:27 darkstar kernel: ALSA ../../alsa-kernel/pci/cs46xx/dsp_spos_scb_ lib.c:226: cs46xx_dsp_proc_free_scb_desc: freeing PCMReader_SCB0 Mar 16 12:54:27 darkstar kernel: ALSA ../../alsa-kernel/pci/cs46xx/dsp_spos_scb_ lib.c:226: cs46xx_dsp_proc_free_scb_desc: freeing SrcTask_SCB0 Mar 16 12:54:27 darkstar kernel: ALSA ../../alsa-kernel/pci/cs46xx/dsp_spos_scb_ lib.c:226: cs46xx_dsp_proc_free_scb_desc: freeing AsynchFGTxSCB Mar 16 12:54:27 darkstar kernel: ALSA ../../alsa-kernel/pci/cs46xx/dsp_spos_scb_ lib.c:290: dsp_spos: creating SCB <AsynchFGTxSCB> Mar 16 12:54:27 darkstar kernel: ALSA ../../alsa-kernel/pci/cs46xx/dsp_spos_scb_ lib.c:290: dsp_spos: creating SCB <PCMSerialInput_II> ------------------ TIA for any advice or help with this. And thanks for all your great work, Benny. -- Peter Heatwole "Murphy was just a well known pessimist." ------------------------------------------------------- This SF.net email is sponsored by:Crypto Challenge is now open! Get cracking and register here for some mind boggling fun and the chance of winning an Apple iPod: http://ads.sourceforge.net/cgi-bin/redirect.pl?thaw0031en _______________________________________________ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel
