Hi,
I'm trying to set up something along the lines of what has been described on this thread. So here's what I'm trying to do;
My TV input comes from a composite input line that is the only TV input I can get with all my cable channels. When I select a channel in my TV Guide I want to change channels by sending a signal to my telewest cable decoder via LIRC. For instance:
If I selected sky_one I'd like to execute
# /usr/local/bin/rc SEND_ONCE CABLE 1 2 0
I am using tvtime and would like to know if this is possible, and how it can be done. I have tried using video groups and setting my plugin.external_tuner but when I define any kind of video group my signal changes from PAL to NTSC! and my picture is corrupted.
I have been trying to pick up some python so i can understand this mass of code.
If I can get a resolution to this I'll be filling in a wiki entry on it
Thanks for your help
Karl,
A. J. Schiavone wrote:
Ok,
I've answered a few of my questions:
1. Apparently the external tuner stuff only works for recording. So, now it changes channels before recording using the tv.irsend_generic plugin calling an external script I created. It is called freevo_dss and it takes the $1 $2 $3 output (channel is of the form 8 8 5) and calls a script that changes the channel via the DSS serial port.
Am I right in assuming that this doesn't work for changing the channel for viewing or am I not doing something correctly?
2. I'm not sure if channels.py is involved in this process or if it is a future feature.
3. How do I get it to change the channel for viewing other than hacking tvtime.py?
- Tony -
---------------------------------------------------- A. J. Schiavone wrote:
Hi,
I"m using freevo 1.5.2 and have a few questions on
this subject.
1. Does the plugin_external_tuner stuff still work in this version? I have figured out how to do video groups to select my composite input, but I can"t get the external tuner stuff to work. Here"s my commands (I am trying to call an external routine to change the channel on my Sony DSS via the Sony"s serial port).
plugin_external_tuner = plugin.activate("tv.irsend_generic", args=("/home/tony/freevo_test", ))
VIDEO_GROUPS = [
VideoGroup(vdev="/dev/video0",
adev=None,
input_type="composite",
input_num=1,
tuner_type="external",
desc="Sony DSS",
recordable=True),
]
freevo_test is just a test script I"m currently using until I get this to work but it never gets called.
Now, I have hacked up tvtime.py with commands to call
my dss channel changer program as follows, which
works, but I would like to get both viewing and
recording working the correct freevo way.
# Change the channel on the dss. AJS
os.system("/opt/sbin/dss " + str(tuner_channel))
2. Is the channels.py program used for changing the channels for viewing television, recording television, both, or neither? I put some debugging print statements in there and it doesn"t seem to get called for tv viewing when changing the channel. I haven"t tried recording yet.
3. What is the correct way to do this? In short, I
have an external Sony DSS box hooked up with a serial
cable. I want to be able to select the composite
input (already accomplished via video groups) and
change the channel via an external program (which I
already have that works) for both viewing and
recording.
Thanks in Advance,
- Tony -
---------------------------------------------------- Rob Shortt wrote:
Hi,
Creating a script and / or just calling rc/irsend from your VCR_CMD is certainly an easy way to do this but using an "external tuner" plugin allows full integration into Freevo. You can both watch tv and record from an external source, and even have only a partial amount of your channels on that source.
I wrote two external tuner plugins, irsend_echostar (for echostar sat receivers since they do things a bit different) and irsend_generic (a wrapper around rc/irsend). So in your care you would have something like this in your local_conf.py:
plugin_external_tuner = plugin.activate("tv.irsend_generic", args=("/usr/bin/rc SEND_ONCE sky", ))
An example VIDEO_GROUPS entry is:
VIDEO_GROUPS = [ VideoGroup(vdev="/dev/video0", adev=/dev/dsp1, input_type="composite", input_num=5, tuner_type="external", desc="Sky", recordable=True), ]
Here you see that we want to record/view from /dev/video0, /dev/dsp1, composite input (which is enumerated as input 5 in the drivers for this example), and we want to use an external tuner. When Freevo changes the channel it checks the VideoGroup for that chan for the tuner_type, and if it is "external" then uses plugin_external_tuner to change the channel.
Here"s another example, using a pvr-x50 / ivtv card, an dexternal tuner, and channel 4 passthrough on the coax/tuner input:
VIDEO_GROUPS = [ VideoGroup(vdev="/dev/video0", adev=None, input_type="tuner", input_num=4, tuner_norm="NTSC", tuner_chan="4", tuner_type="external", desc="Bell ExpressVu", group_type="ivtv", recordable=True), ]
Here we are using /dev/video0, no audio device (since we get a complete mpeg stream), using the tuner input which in my case is input_num=4, my norm is NTSC, and using an external tuner. It also makes sure my card"s tuner is set to channel 4 so I can see what"s comming from my sattelite box.
Accepted VideoGroup properties are: vdev: The video device, such as /dev/video. adev: The audio device, such as /dev/dsp. input_type: tuner, composite, svideo, webcam input_num: The number of this input according to V4L tuner_type: internal (on a v4l device), or external (cable or sat box) tuner_norm: NTSC, PAL, SECAM tuner_chanlist: us-cable, tuner_chan: If using input_type=tuner and tuner_type=external set this to what channel it needs to be to get the signal, usually 3 or 4. recordable: True or False. Can you record from this VideoGroup. desc: A nice description for this VideoGroup. group_type: Special variable to identify devices like dvb or ivtv. This can be left as default, "normal", or set to "ivtv" or "dvb".
If you only have one VideoGroup here then Freevo will assume ALL of your TV_CHANNELS belong to that group.
If you use the tv.irsend_generic plugin you might have to mess around with it because I can"t use irsend or rc with my transmitter and receiver. Basicly it breaks the channel command "123" up and calls irsend SEND_ONCE <remote_name> 1 2 3. I"m not sure if that will send 1, 2, then 3 so some slign modification to the setChannel method may be required.
Dave Smylie wrote:
Well, I spoke to rob about VIDEO_GROUPS, and
looked briefly at trying to
set those up. However, it seemed overkill for my
needs.
It is complicated to setup, I would like to simplify it.
-Rob
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