[mpeg2] Re: How to check Active Video/Present for S-Video

[Deepak Kotian <dkotian3@vsnl.net>]

I am still stuck on this.
Does any one any clue of this.
Any pointer on this should do be helpful.

Thanks and Regards
Deepak

----- Original Message -----
From: <dkotian3@vsnl.net>
To: <mpeg2@linuxtv.org>
Cc: <dkotian3@vsnl.net>
Sent: Monday, June 23, 2003 8:11 PM
Subject: [mpeg2] How to check Active Video/Present for S-Video


> Hi
>    I am using the Kfir1 driver on 2.4.18-3 kernel. We have added an ioctl
command which my application wants to check if the Video Source is
active(present) or not.
>
>     Here is the code segment for it.
>
>     u32 *val = arg;
>     decoder_command(kfircurr, DECODER_GET_STATUS, val)
>
>     The value of the val is '1' from Composite Input, if the Composite
>     video input is connected from the DVD player and the player is
>     ON(i.e. source is active) and '0' if the source is not connected.
>     But, when I disconnect the Composite and connect the S-Video
>     cable of the DVD player and do this check, I do not get
>     value as 1. Basically, it does seem to detect for S-Video.
>     We have changed saa7113.c for DECODER_GET_STATUS switch
>     case to comment the following code to make it work properly
>     for Composite input.
>     /*                 switch (decoder->norm) {
>                         case VIDEO_MODE_NTSC:
>                                 res |= DECODER_STATUS_NTSC;
>                                 break;
>                         case VIDEO_MODE_PAL:
>                                 res |= DECODER_STATUS_PAL;
>                                 break;
>                         default:
>                         case VIDEO_MODE_AUTO:
>                                 if ((status & (1 << 5)) != 0) {
>                                         res |= DECODER_STATUS_NTSC;
>                                 } else {
>                                         res |= DECODER_STATUS_PAL;
>                                 }
>                                 break;
>                         }
>                         if ((status & (1 << 0)) != 0) {
>                                 res |= DECODER_STATUS_COLOR;
>                         }
>     */
>
>     But, if I do not do this 2 lines active Video check and
>     start the encoder with S-Video, it is OK and encodes properly
>     with S-Video.
>     This check is creating a problem only on S-Video and Composite is OK.
>     I need to do this check in my application.
>     Any suggestions on the Active Video check for S-Video.
> Regards
> Deepak
>
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