Further information. The behaviour was caused by the default iec958.conf file. I removed the entries that set the AES bits and it stopped pouncing on my settings. I can only say I wish there was some way through the API to restrain the pcm_hooks plugin. > -----Original Message----- > From: alsa-devel-bounces@xxxxxxxxxxxxxxxx [mailto:alsa-devel-bounces@alsa- > project.org] On Behalf Of Bouterse, Bob > Sent: Tuesday, March 18, 2008 11:32 AM > To: alsa-devel@xxxxxxxxxxxxxxxx > Subject: Having a fight > withsnd_sctl_install:src/control/setup.c in alsa-lib-1.0.14a > > I am using alsa-lib-1.0.14a on a VIA EPIA 15000g board. > > I am hoping that someone can help me. I have been in an entrenched fight > with the sctl functions setting my ctl setting back to the config file > values. > > I am working on some extensions to the alsa audio output plugins in xine > to provide simultaneous analog and iec958 on a Via EPIA 15000g, board. > > The issue is that I need to set the iec958 status bits at runtime, but > everytime I call: > > /*---------------------------------------------------------------------- > -----*/ > ... > > snd_ctl_elem_value_get_iec958(cval, &iec958); > llprintf(LOG_MIXER,"Read > AES0=0x%02x,AES1=0x%02x,AES2=0x%02x,AES3=0x%02x\n", > iec958.status[0], iec958.status[1], iec958.status[2], > iec958.status[3]); > > /* AES0=0x6,AES1=0x82,AES2=0x0,AES3=0x2 */ > iec958.status[0] = IEC958_AES0_NONAUDIO | > IEC958_AES0_CON_NOT_COPYRIGHT; > iec958.status[1] = IEC958_AES1_CON_PCM_CODER | > IEC958_AES1_CON_ORIGINAL; > iec958.status[2] = 0x00; > iec958.status[3] = IEC958_AES3_CON_FS_48000; > > llprintf(LOG_MIXER,"Writing > AES0=0x%02x,AES1=0x%02x,AES2=0x%02x,AES3=0x%02x\n", > iec958.status[0], iec958.status[1], iec958.status[2], > iec958.status[3]); > > /* store the values */ > snd_ctl_elem_value_set_iec958(cval, &iec958); > if ((err = snd_ctl_elem_write(ctl_handle, cval)) < 0) { > xprintf (this->class->xine, XINE_VERBOSITY_DEBUG, > "snd_ctl_elem_write(): %s\n", snd_strerror(err)); > } > > ... > /*---------------------------------------------------------------------- > -----*/ > snd_sctl_install resets the IEC958 status bits back to the original > values! > > I am pulling my hair out trying to understand how to stop this. > > Unfortunately I don't have much time to fix this, please help. > > > ---------------------------------------------------- > Bob Bouterse > Sr. Software Engineer > Office of the CTO > D&M Holdings Inc. > 1-317-616-6541 > (fax) 1-317-616-6541 > _______________________________________________ > Alsa-devel mailing list > Alsa-devel@xxxxxxxxxxxxxxxx > http://mailman.alsa-project.org/mailman/listinfo/alsa-devel _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
