Klaus Schmidinger wrote:
> Tomahawk wrote:
> > I just switched over the german channel ARD showing a movie in 2 Channel
> > Audio.
> >
> > Channel A the normal Movie Audio
> > Channel B the Audio for blind people
> >
> > Though I tried to switch it in the Audio Menu (Cursors left right for
> > left and right channel) nothing changed I always had to listen to the
> > descriptive Audio for blind people too.
> > Because my digital audio receiver has no possibility to switch between
> > channel a or b.
> >
> > Shouldn't there be something implemented to switch the Audio Channel on
> > TV channles choosing not to use two audio pids for splitting the audio
> > modes but by splitting the Stereo Signal.
>
> I'd say the ARD has screwd up things.
> They aren't broadcasting this correctly.
Unfortunately, DVB standards are too difficult to implement for most
channels. :P
If you own a FF card with Crystal audio chip [*], you may try this patch:
diff -p -u -r1.15 av7110_av.c
--- linux/drivers/media/dvb/ttpci/av7110_av.c 17 Mar 2005 03:16:11 -0000 1.15
+++ linux/drivers/media/dvb/ttpci/av7110_av.c 26 Mar 2005 02:38:29 -0000
@@ -1230,14 +1236,20 @@ static int dvb_audio_ioctl(struct inode
switch(av7110->audiostate.channel_select) {
case AUDIO_STEREO:
audcom(av7110, AUDIO_CMD_STEREO);
+ if (av7110->adac_type == DVB_ADAC_CRYSTAL)
+ i2c_writereg(av7110, 0x20, 0x02, 0x49);
break;
case AUDIO_MONO_LEFT:
audcom(av7110, AUDIO_CMD_MONO_L);
+ if (av7110->adac_type == DVB_ADAC_CRYSTAL)
+ i2c_writereg(av7110, 0x20, 0x02, 0x4a);
break;
case AUDIO_MONO_RIGHT:
audcom(av7110, AUDIO_CMD_MONO_R);
+ if (av7110->adac_type == DVB_ADAC_CRYSTAL)
+ i2c_writereg(av7110, 0x20, 0x02, 0x45);
break;
default:
It will switch the *analog* output of the sound chip to L/stereo/R mode,
which will even work if data is not encoded correctly.
[*] FF DVB-S Cards with Crystal chip:
- rev 1.5
- rev 1.6
- some rev 2.1 boards
- rev 2.2
- rev 2.3
Oliver
--
--------------------------------------------------------
VDR Remote Plugin available at
http://www.escape-edv.de/endriss/vdr/
--------------------------------------------------------
