[mythtv] small CC problem

[Daniel Segel]

Isaac Richards wrote:

>On Friday 05 August 2005 06:08 pm, sukovich wrote:
>  
>
>>I have a small closed captioning problem with mythtv 0.18.1 and my pvr-350.
>>I am using ivtv 0.3.7.b drivers for the card. im also using gentoo linux
>>with the
>>2.6.12 kernel. Pretty much I can get mythtv to record tv with captions, and
>>watch live tv with captions on my tv.
>>
>>    The real problem is when i use the commercial skip, or skip ahead a
>>minute
>>or use any type of fast forwarding the captions turn off, and they dont
>>turn back on when the recorded video starts back up. This is the only show
>>stopping
>>bug that is stopping me from really using my pvr completely.
>>    
>>
>
>Myth doesn't support captions at all on the pvr-350.
>  
>
Something is signalling the saa7127 module to turn CC output off when 
MythTV skips or jumps in any direction; if MythTV isn't doing the 
signalling,, what is? I looked through the saa7127 code but didn't see 
anything in there that would act on its own - it basically just does 
what it's told to do.

 From my system logs:

<I started watching a recorded program here>
Aug  4 17:04:45 [kernel] ivtv: Allocate DMA decoder MPEG stream: 16 x 
65536 buffers (1024KB total)
Aug  4 17:04:45 [kernel] ivtv: Allocate DMA decoder VBI stream: 512 x 
2048 buffers (1024KB total)
Aug  4 17:04:45 [kernel] ivtv: Decoder VBI RE-Insert start 0x0019ac00 
size 0x0000be00 type 1
Aug  4 17:04:46 [kernel] saa7127: Turn CC output on
               - Last output repeated twice -
<MythTV started a commercial skip at this point>
Aug  4 17:14:41 [kernel] saa7127: Turn CC output off
Aug  4 17:14:41 [kernel] ivtv: Decoder VBI RE-Insert start 0x0019ac00 
size 0x0000be00 type 1
<I think I tried starting the program again here to see if CC would come 
back on>
Aug  4 17:17:31 [kernel] ivtv: Decoder VBI RE-Insert start 0x0019ac00 
size 0x0000be00 type 1
Aug  4 17:27:23 [kernel] ivtv: Allocate DMA decoder MPEG stream: 16 x 
65536 buffers (1024KB total)
Aug  4 17:27:23 [kernel] ivtv: Allocate DMA decoder VBI stream: 512 x 
2048 buffers (1024KB total)
Aug  4 17:27:23 [kernel] ivtv: Decoder VBI RE-Insert start 0x0019ac00 
size 0x0000be00 type 1
...etc.

I started watching at 17:04:45, and CC was working. At 17:14:41 there 
was a commercial break. CC was turned off and MythTV skipped over the 
commercials and continued playing, but CC was never turned back on, and 
from this point on they don't ever turn back on.The same thing happens 
if I manually skip forward or backwards. CC turns off, but never turns 
back on.

Daniel