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Yurij Sysoev | 1 Oct 2003 06:18
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Re: Very Basic Capture Question, Please Help!!

Hi,

there is a really brain-dead one :-)

8<------------------------ begin 
---------------------------------------------------
/*
    v4l single frame grabber sample
*/

#include <stdlib.h>
#include <stdio.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <errno.h>

#include <linux/videodev.h>

const int     mywidth = 640;  // !!!!!!!
const int     myheight = 480; // NTSC-J - pls, put your here

static struct    video_capability  capability;

static int     fd = -1;

static int ret_bytes,vfd;

static char *map = NULL;
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Rabenu Amihay-R57204 | 1 Oct 2003 08:44

RE: API for operations such as 'rotate', 'flip u/d' ...

Hi,
Yes, I am working on the next generation of application processor.
This one will have hardware support in rotation, flip u/d, post-filtering and others
image processing capabilities.
Do I have to add new ioctl's for the API till such will become a standard ?

Amihay.

-----Original Message-----
From: Ronald Bultje [mailto:rbultje <at> ronald.bitfreak.net]
Sent: Tuesday, September 30, 2003 10:45 AM
To: video4linux-list <at> redhat.com
Subject: Re: API for operations such as 'rotate', 'flip u/d' ...

On Mon, 2003-09-29 at 17:51, Rabenu Amihay-R57204 wrote:
> What is the V4L / V4l2 API for operations such as 'rotate', 'flip u/d' ...
> Does such exists ?
> How does it done if no such (is there a library for such) ?

Why would you want to do this using a kernel API? Do you have a card
that supports these operations? I doubt that, in which case you'd
probably need a userspace solution. Applications such as GIMP
(per-image) and libraries such as GStreamer (on a stream of frames) can
do rotation and flip and so on.

Ronald

--

-- 
Ronald Bultje <rbultje <at> ronald.bitfreak.net>
Linux Video/Multimedia developer
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Stu Armitage | 1 Oct 2003 12:29
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Nebula DigiTV & IR control

Dear all,

Please does anyone know whether the infra-red box
supplied with the Nebula DigiTV DVB-T card is workable
under linux?

I've got the rest of it up and running with a DXR3
card and VDR-1.2.2 (thanks for the HOWTOs), but I was
wondering if there's an easier way to get IR control
than a homebrew receiver...

Many thanks,

Stu Armitage. 

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hexa | 1 Oct 2003 13:43

Re: thin lines on fbtv solved

Edward, i had this kind of problem too, when doing overlay to Trident and Savage2000 video cards.
Sorry, I didnt saw your previous mail regarding to this question :(

-hexa
----- Original Message ----- 
From: "Edward Jose" <edward <at> v-ecom.com>
To: <video4linux-list <at> redhat.com>
Sent: Friday, September 26, 2003 3:41 AM
Subject: thin lines on fbtv solved

> hello,
> 
> i finally was able to remove the lines on fbtv by setting capture to
> grabdisplay on the config file.
> 
> 
> 
> 
> 

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David Atkinson | 2 Oct 2003 05:16

Nintendo 64 (PAL) in capture/grabdisplay mode


Hi,

I am wondering if anyone has had any luck getting a PAL Nintendo 64 to 
work on any saa7134 based card in capture/grabdisplay mode. It works 
fine in overlay mode, but not in grabdisplay mode. I can capture from it 
in Windows.

I am wondering if this has anything to do with the signal that the 
Nintendo generates. It appears to leave every second field blank, as the 
scanlines are noticable on both a normal TV and when viewing in overlay 
mode.

Also I would like to know if any bttv users have had this working.

Thanks,

David.

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Edward Jose | 2 Oct 2003 06:01

frame rate question

hi all,

i posted a problem a while back with regard low frame rate when viewing
ntsc source.my problem is that i configure fbtv with norm ntsc placed a
ntsc source in my Life View card through the composite in, i get 12-15
fps. when i remove the composite from my ntsc source and use a pal, with
out terminating fbtv, frame rate climbs to 25-30 fps. i am running fbtv on
640x480 frame buffer. when i change the display size of fbtv to 320x240, i
get 30fps.
why is this happening? is there a way for me to get at least 25fps for
ntsc at 640x480?
thanks for any help

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Macca .. | 2 Oct 2003 09:56
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Using liblavplay in an application & gtktvplug (video overlay widget for GNOME)


Hi,
I posted this question to the mjpeg-developer mailing list but didn't get 
much response...
So I thought I'd try these mailing lists as well...

I was trying to use liblavplay (from the mjpeg tools) in an application I am 
writing and can't  seem to get it to compile due to a linking problem of 
some sort. This is the  compile command generated by make:

gcc  -g -O2   -o eits  main.o support.o interface.o callbacks.o gtktvplug.o
gtksdl.o video.o -pthread -Wl,--export-dynamic -L/usr/X11R6/lib -lgnomeui-2
-lSM -lICE -lbonoboui-2 -lxml2 -lz -lgnomecanvas-2 -lgnome-2 -lart_lgpl_2
-lpangoft2-1.0 -lgtk-x11-2.0 -lgdk-x11-2.0 -latk-1.0 -lgdk_pixbuf-2.0
-lpangoxft-1.0 -lpangox-1.0 -lpango-1.0 -lbonobo-2 -lgconf-2 -lgnomevfs-2
-lbonobo-activation -lORBit-2 -lm -llinc -lgmodule-2.0 -ldl -lgobject-2.0
-lgthread-2.0 -lglib-2.0    -L/usr/lib -Wl,-rpath,/usr/lib -lSDL -lpthread
-lXv -lmjpegutils -llavfile -llavjpeg -llavplay -llavrec

I am linking against
 <at> PACKAGE_LIBS <at>  $(INTLLIBS)  <at> SDL_LIBS <at>  -lXv -lmjpegutils -llavfile -llavjpeg
-llavplay -llavrec
in the Makefile.am

but get the following error:
/usr/local/lib/liblavfile.so: undefined reference to `mjpeg_error_exit1'
/usr/local/lib/liblavfile.so: undefined reference to `mjpeg_warn'
/usr/local/lib/liblavfile.so: undefined reference to `mjpeg_error'
/usr/local/lib/liblavfile.so: undefined reference to `mjpeg_info'
/usr/local/lib/liblavfile.so: undefined reference to `mjpeg_debug'
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David Beach | 2 Oct 2003 17:18
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help with LML33

Hi all

I'm trying to get my LML33 up and running under Redhat 8 (2.4.18-14).  I 
have a problem in that when I run lavrec (mjpegtools) to capture I get the 
message:

# lavrec -d 1 -f a -a 0 -i n -t 30 -q 80 test.avi
**ERROR: [lavrec] Error opening video-device (/dev/video0): No such device
++ WARN: [lavrec] Not ready for capture (state = 0)!
Press enter to start recording>
Recording time  :  0.00.00:00
Lost frames     : 000
A/V sync ins/del: 000/000
Audio errors    : 000

So, when it tells me there is no device on video0, I check the /dev 
directory and find that there is a video0 (char-major-81).  So I checked 
dmesg to see the driver information.  I know that the card uses the Zoran 
zr36067 driver and it is loaded.  Here is what I get:

#  dmesg | tail -n 20
ieee1394: Host added: Node[00:1023]  GUID[00d0f520088060df]  [Linux 
OHCI-1394]
parport0: PC-style at 0x378 (0x778) [PCSPP,TRISTATE,EPP]
parport0: irq 7 detected
ip_tables: (C) 2000-2002 Netfilter core team
PCI: Found IRQ 11 for device 00:0c.0
3c59x: Donald Becker and others. www.scyld.com/network/vortex.html
00:0c.0: 3Com PCI 3c905C Tornado at 0xb400. Vers LK1.1.18-ac
divert: allocating divert_blk for eth0
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Ronald Bultje | 2 Oct 2003 17:30

Re: help with LML33

Hi David,

On Thu, 2003-10-02 at 17:18, David Beach wrote:
> 2.  The Zoran driver is loaded and working

Nope. Download the latest greatest from CVS (cvs
-d:pserver:anonymous <at> cvs.mjpeg.sf.net:/cvsroot/mjpeg login && cvs
-d:pserver:anonymous <at> cvs.mjpeg.sf.net:/cvsroot/mjpeg co -r
ZORAN_VIDEODEV_2 -d driver-zoran-0.9.x driver-zoran) or use a recent
2.6.0-testX kernel (which has this driver included). Both of them
autodetect the LML33 (simply 'modprobe zoran' or 'modprobe zr36067',
depending on whether you use CVS (zoran) or 2.6.0-testX (zr36067)).

HTH,

Ronald

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Linux Video/Multimedia developer

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Donald Thompson | 2 Oct 2003 19:29

Multiple and different capture cards in one system

I'd like to purchase an additional capture card for a system. I understand
its possible to have multiple cards of the same type, but is it possible
to have different cards that might require different module arguments (ie.
card=) ? I'm using bttv-0.9.11 with kernel 2.4.22. Loading bttv without an
argument works with the exception that the tuner is not correctly detected
and I cannot change channels.

-Don

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Gmane