[mythtv-users] DCT2000, Homebrew transmitter, and the ensuinghilarity

[Adrian Burden]

There was a post last week on slow channel changing. They posted a c
program to compile and use. It speeds up the channel changing.

Here is the code that Carlos Talbot [carlos at talbot.net] reposted

Paste into change_channel.c
Compile with 
gcc -o change_channel change_channel.c

<--cut-->
#include <stdio.h>
#include <stdlib.h>

send_channel(int number) {
  static char command[100];
  sprintf(command,"/usr/local/bin/rc SEND_ONCE gi-motorola-dct2000
%d",number);
  system(command);
}

send_exit() {
  static char command[100];
  sprintf(command,"/usr/local/bin/rc SEND_ONCE gi-motorola-dct2000
ENTER");
  system(command);
}

main (int argc, char *argv[]) {
  int channel, hundreds, tens, ones;
  channel=atoi(argv[1]);
  if(channel>999) {
    fprintf(stderr,"error- channel is 4 digits\n");
    channel=channel%1000;
  }
  hundreds=channel/100;
  channel=channel-(hundreds*100);
  tens=channel/10;
  ones=channel=channel-(tens*10);

  send_channel(hundreds);
  usleep(300000);
  send_channel(tens);
  usleep(300000);
  send_channel(ones);
  usleep(300000);
  send_exit();

  return 0;
}
<--cut-->


> -----Original Message-----
> From: mythtv-users-bounces at snowman.net 
> [mailto:mythtv-users-bounces at snowman.net] On Behalf Of Brian Z
> Sent: Monday, June 09, 2003 3:31 PM
> To: mythtv-users at snowman.net
> Subject: [mythtv-users] DCT2000, Homebrew transmitter, and 
> the ensuinghilarity
> 
> 
> Hi all,
> 
> I've managed to put together a homegrown IR transmitter for 
> use with my DCT2000 cable box, smack lirc around a bit to use 
> the aforementioned tx as well as the receiver which came with 
> the card (PCTV Pro), and all is working. One little problem...
> 
> When changing channels, its about a half a second delay on 
> the frontend to display the tuned-to channel info that would 
> normally accompany the near-instantaneous change, but an 
> additional 2-3 seconds as the transmitter actually changes 
> the channel. I think I'm looking for a way to delay the time 
> it takes mythtv to display the new channel info. That way, it 
> can wait for the actual tuning to "catch up". I could 
> probably change the tx speed in the channel changing script, 
> but that would likely result in a lot of missed digits (A Bad Thing).
> 
> This is probably a question best posed to the dev list, but 
> for some reason I'd feel guilty asking such a frivilous 
> question. Anyone?
> 
> Thanks.
> 
> 
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> 
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