Hi, I installed UAV-Pilot right now, but it explodes like: $ bin/uav_video_dump Can't locate UAV/Pilot/Control/ARDrone/Video/FileDump.pm in @INC (@INC contains: /etc/perl /usr/local/lib/perl/5.14.2 /usr/local/share/perl/5.14.2 /usr/lib/perl5 /usr/share/perl5 /usr/lib/perl/5.14 /usr/share/perl/5.14 /usr/local/lib/site_perl .) at bin/uav_video_dump line 9. BEGIN failed--compilation aborted at bin/uav_video_dump line 9.
Is there something I can do in order to test your example script? Cheers, FROGGS Am 24.07.2013 22:53, schrieb tmur...@wumpus-cave.net: > I've made a simplified, standalone example: > > http://pastebin.com/dPPNc8VL > > The big array at the top is a single YUV420P frame. Expected behavior > is to display that frame in a window for 5 seconds, and then quit. If > I comment out the overlay handling, it displays a green background. > > I've verified that I'm running SDL 2.540. > > Thanks, > Timm > > On 24.07.2013 08:17, Kartik Thakore wrote: >> Can we run this with out needing ARDdrone? >> >> On Wed, Jul 24, 2013 at 8:22 AM, <tmur...@wumpus-cave.net> wrote: >> >>> Short on time at the moment, but I have the complete code on a >>> github repo: >>> >>> https://github.com/frezik/UAV-Pilot [2] >>> >>> The relevant code is in UAV::Pilot::SDL::Video, and the decoding >>> happens in the xs file for UAV::Pilot::Video::H264Decoder. The test >>> t/160_video_decode.t should run the decoding end of things. There's >>> a test video in t_data/ardrone_video_stream_dump.bin, though that >>> contains the PaVE headers from the UAV before each frame. Those >>> headers can be stripped out by bin/uav_video_dump. >>> >>> I'll try to come up with a more concise example later this evening. >>> >>> Thanks, >>> Timm >>> >>> On 24.07.2013 01 [3]:00, Tobias Leich wrote: >>> >>>> Hi, can you paste a complete example please? Maybe with a link to a >>>> test >>>> video file. >>>> >>>> What I would try first is SDL's latest release, which is 2.540 or so. >>>> >>>> Cheers, FROGGS >>>> >>>> Am 23.07.2013 23:44, schrieb tmur...@wumpus-cave.net: >>>> >>>>> I'm working on a project involving decoding h.264 video frames with >>>>> ffmpeg and then outputting them to an SDL surface. From what I've >>>>> read, the YUV overlay is meant for this kind of job, but I'm having >>>>> trouble getting it to work with the Perl bindings. >>>>> >>>>> One thing that seems odd to me in the Perl docs is: >>>>> >>>>> As of release 2.3 direct right to overlay is disable. >>>>> >>>>> Besides the typos, this troubles me because it seems that disabling >>>>> the feature makes the YUV overlay completely useless. >>>>> >>>>> Not to be deterred, I wrote this code: >>>>> >>>>> SDL::Video::lock_YUV_overlay( $overlay ); >>>>> # The order of array indexen is correct, according to: >>>>> # http://dranger.com/ffmpeg/tutorial02.html [1] >>>>> my $pitches = $overlay->pitches; >>>>> $$pitches[0] = scalar @{ $last_vid_frame[0] }; >>>>> $$pitches[2] = scalar @{ $last_vid_frame[1] }; >>>>> $$pitches[1] = scalar @{ $last_vid_frame[2] }; >>>>> my $pixels = $overlay->pixels; >>>>> $$pixels[0] = $last_vid_frame[0]; >>>>> $$pixels[2] = $last_vid_frame[1]; >>>>> $$pixels[1] = $last_vid_frame[2]; >>>>> SDL::Video::unlock_YUV_overlay( $overlay ); >>>>> >>>>> SDL::Video::update_rects( $sdl, $bg_rect ); >>>>> SDL::Video::display_YUV_overlay( $sdl, $bg_rect ); >>>>> >>>>> When I run this, I get an error about not being able to find the >>>>> pitches() method against the class "SDL::Overlay". Eh? (Same thing >>>>> happens for the pixels() method if I put that call first.) I can call >>>>> width() and format() and such just fine on that object. >>>>> >>>>> If needed, I can handle the overlay entirely at the C level. I may >>>>> end up doing that anyway; the C array that comes out of ffmpeg is >>>>> being transformed into a Perl array-of-arrays, which is going to >>>>> be an >>>>> expensive operation to do for 720p at 30 fps in realtime. But I'd >>>>> like >>>>> to try this at the Perl level for now. >>>>> >>>>> I might also have to convert the output from ffmpeg using >>>>> sws_scale(). It's coming out in YUV420P mode, and I'm using YV12 to >>>>> init the overlay. But I'd like to get the above working before >>>>> messing >>>>> with that. >>>>> >>>>> Thanks, >>>>> Timm Murray >> >> >> >> Links: >> ------ >> [1] http://dranger.com/ffmpeg/tutorial02.html >> [2] https://github.com/frezik/UAV-Pilot >> [3] tel:24.07.2013%2001 >
