[ros-users] compressed_image_transport not working

[Patrick Bouffard]

I just tried an update/upgrade on the machine in question, and that
didn't bring in any new ros packages. I also tried removing and
reinstalling ros-cturtle-image-transport-plugins, and the problem
persists. Oddly, I have two other machines both with binary installs
of the latest cturtle and I don't see this issue on either of those.

Pat

On Mon, Jul 26, 2010 at 7:42 AM, Brian Gerkey <gerkey at willowgarage.com> wrote:
> hi Patrick,
>
> I just tried the latest binaries on a Karmic box, and the transports
> are available.  We had some issues last week with our deb-building
> system.  Could you try an update and upgrade, to pull the latest
> cturtle debs, and see if the problem persists?
>
>        brian.
>
> On Sat, Jul 24, 2010 at 11:18 PM, Patrick Bouffard
> <bouffard at eecs.berkeley.edu> wrote:
>> I just did an install (from binaries) of cturtle onto a new machine
>> running Ubuntu 10.04, and things seem to mostly work but I noticed if
>> I tried to image_view an image topic using compressed transport it did
>> not work. So I tried:
>>
>> $ rosrun image_transport list_transports
>> Declared transports:
>> compressed (*): Not available. Try 'rosmake compressed_image_transport'.
>> raw
>> theora (*): Not available. Try 'rosmake theora_image_transport'.
>>
>> Details:
>> ----------
>> "compressed"
>> *** Plugins are not built. ***
>>  - Provided by package: compressed_image_transport
>>  - Publisher: This plugin publishes a CompressedImage using either
>> JPEG or PNG compression.
>>  - Subscriber: This plugin decompressed a CompressedImage topic.
>> ----------
>> "raw"
>>  - Provided by package: image_transport
>>  - Publisher: This is the default publisher. It publishes the Image
>> as-is on the base topic.
>>  - Subscriber: This is the default pass-through subscriber for topics
>> of type sensor_msgs/Image.
>> ----------
>> "theora"
>> *** Plugins are not built. ***
>>  - Provided by package: theora_image_transport
>>  - Publisher: This plugin publishes a video packet stream encoded using Theora.
>>  - Subscriber: This plugin decodes a video packet stream encoded using Theora.
>>
>> .. I'm not sure what to make of this. Why are the compressed and
>> theora transports 'not built'? If I do a 'rosmake
>> compressed_image_transport' as suggested, it completes without error
>> but only because (I think) ROS_NOBUILD is set in that package anyway.
>> I even tried removing ROS_NOBUILD and running rosmake, which did seem
>> to complete successfully, yet list_transports still complains.
>>
>> I don't recall having to do anything special beyond 'apt-get install
>> ros-cturtle-image-transport-plugins' in the past.
>>
>> Thanks,
>> Pat
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