Mike: CM-iGLX Video Input Port moved to CM-iGLX: Linux: Video Input Port

2009-12-23T08:13:30Z

CM-iGLX Video Input Port moved to CM-iGLX: Linux: Video Input Port

Mike at 12:00, 25 May 2008

2008-05-25T12:00:07Z

Mike: New page: = Introduction = CM-iGLX has Video Input Port (VIP in short) integrated into Geode LX processor. The VIP receives data from video decoder (for instance SAA7113h assembled on the SB-iGLX) a...

2008-05-22T07:41:22Z

New page: = Introduction = CM-iGLX has Video Input Port (VIP in short) integrated into Geode LX processor. The VIP receives data from video decoder (for instance SAA7113h assembled on the SB-iGLX) a...

New page

= Introduction =
CM-iGLX has Video Input Port (VIP in short) integrated into Geode LX processor. The VIP receives data from video decoder (for instance SAA7113h assembled on the SB-iGLX) and this data can be stored as a video stream or presented as a display overlay. This functionality can be enabled in using [http://v4l2spec.bytesex.org/ "Video for Linux 2 (v4l2)" API].
COmpuLab provides [http://www.compulab.co.il/mediawiki/files/Linux/iglx/geodelx-v4l2.tar.gz geodelx-v4l2 package] which contains a driver that implements the v4l2 API on CM-iGLX ({{filename|geodelx-v4l2/geode_lx_video.patch}}) and application examples for video capture ({{filename|geodelx-v4l2/examples/capture.c}}) and video overlay ({{filename|geodelx-v4l2/examples/overlay.c}}).

= Kernel configuration =
The v4l2 driver for CM-iGLX is available as a patch vs. [http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.24.tar.bz2 Linux kernel 2.6.24]. After applying the patch to kernel source tree you will need to enable the [[#Geode LX framebuffer driver]] and
[[#Geode LX v4l2 driver]]. After updating kernel configuration as described below, build the kernel and install the resulting image and loadable kernel modules to CM-iGLX.

== Geode LX framebuffer driver ==

In the '''"Device Drivers -> Graphics support"''' menu enable '''"Support for frame buffer devices"''':

<pre>
.config - Linux Kernel v2.6.24 Configuration
──────────────────────────────────────────────────────────────────────────────
┌─────────────────────────── Graphics support ────────────────────────────┐
│ Arrow keys navigate the menu. <Enter> selects submenus --->. │
│ Highlighted letters are hotkeys. Pressing <Y> includes, <N> excludes, │
│ <M> modularizes features. Press <Esc><Esc> to exit, <?> for Help, </> │
│ for Search. Legend: [*] built-in [ ] excluded <M> module < > │
│ ┌─────────────────────────────────────────────────────────────────────┐ │
│ │ < > /dev/agpgart (AGP Support) ---> │ │
│ │ < > Direct Rendering Manager (XFree86 4.1.0 and higher DRI suppor│ │
│ │ < > Lowlevel video output switch controls │ │
│ │ <*> Support for frame buffer devices ---> │ │
│ │ [ ] Backlight & LCD device support ---> │ │
│ │ Display device support ---> │ │
│ │ Console display driver support ---> │ │
│ │ [ ] Bootup logo ---> │ │
│ └─────────────────────────────────────────────────────────────────────┘ │
├─────────────────────────────────────────────────────────────────────────┤
│ <Select> < Exit > < Help > │
└─────────────────────────────────────────────────────────────────────────┘
</pre>

and in the '''"Support for frame buffer devices"''' menu enable '''"AMD Geode family framebuffer support"''' and '''"AMD Geode LX framebuffer support"''':

<pre>
.config - Linux Kernel v2.6.24 Configuration
──────────────────────────────────────────────────────────────────────────────
┌─────────────────── Support for frame buffer devices ────────────────────┐
│ Arrow keys navigate the menu. <Enter> selects submenus --->. │
│ Highlighted letters are hotkeys. Pressing <Y> includes, <N> excludes, │
│ <M> modularizes features. Press <Esc><Esc> to exit, <?> for Help, </> │
│ for Search. Legend: [*] built-in [ ] excluded <M> module < > │
│ ┌─────────────────────────────────────────────────────────────────────┐ │
│ │ --- Support for frame buffer devices │ │
│ │ [ ] Enable firmware EDID │ │
│ │ [ ] Enable Video Mode Handling Helpers │ │
│ │ [ ] Enable Tile Blitting Support │ │
│ │ *** Frame buffer hardware drivers *** │ │
│ │ < > Cirrus Logic support │ │
│ │ < > Permedia2 support │ │
│ │ < > CyberPro 2000/2010/5000 support │ │
│ │ < > Arc Monochrome LCD board support │ │
.............
│ │ < > 3Dfx Voodoo Graphics (sst1) support │ │
│ │ < > VIA VT8623 support │ │
│ │ < > Cyberblade/i1 support │ │
│ │ < > Trident support │ │
│ │ < > ARK 2000PV support │ │
│ │ < > Permedia3 support (EXPERIMENTAL) │ │
│ │ [*] AMD Geode family framebuffer support (EXPERIMENTAL) │ │
│ │ <*> AMD Geode LX framebuffer support (EXPERIMENTAL) │ │
│ │ < > AMD Geode GX framebuffer support (EXPERIMENTAL) │ │
│ │ < > AMD Geode GX1 framebuffer support (EXPERIMENTAL) │ │
│ │ < > Virtual Frame Buffer support (ONLY FOR TESTING!) │ │
│ └─────────────────────────────────────────────────────────────────────┘ │
├─────────────────────────────────────────────────────────────────────────┤
│ <Select> < Exit > < Help > │
└─────────────────────────────────────────────────────────────────────────┘
</pre>

== Geode LX v4l2 driver ==
In the '''"Device Drivers -> Multimedia devices"''' menu enable '''"Video for Linux"''':

<pre>
.config - Linux Kernel v2.6.24 Configuration
──────────────────────────────────────────────────────────────────────────────
┌────────────────────────── Multimedia devices ───────────────────────────┐
│ Arrow keys navigate the menu. <Enter> selects submenus --->. │
│ Highlighted letters are hotkeys. Pressing <Y> includes, <N> excludes, │
│ <M> modularizes features. Press <Esc><Esc> to exit, <?> for Help, </> │
│ for Search. Legend: [*] built-in [ ] excluded <M> module < > │
│ ┌─────────────────────────────────────────────────────────────────────┐ │
│ │ <M> Video For Linux │ │
│ │ [ ] Enable Video For Linux API 1 (DEPRECATED) │ │
│ │ [*] Enable Video For Linux API 1 compatible Layer │ │
│ │ [*] Video capture adapters ---> │ │
│ │ [ ] Radio Adapters ---> │ │
│ │ < > DVB for Linux │ │
│ │ [ ] DAB adapters │ │
│ │ │ │
│ │ │ │
│ │ │ │
│ └─────────────────────────────────────────────────────────────────────┘ │
├─────────────────────────────────────────────────────────────────────────┤
│ <Select> < Exit > < Help > │
└─────────────────────────────────────────────────────────────────────────┘
</pre>

Next, go to '''"Video capture adapters"''' menu and enable '''"Geode LX Video capture interface"''':

<pre>
.config - Linux Kernel v2.6.24 Configuration
──────────────────────────────────────────────────────────────────────────────
┌──────────────────────── Video capture adapters ─────────────────────────┐
│ Arrow keys navigate the menu. <Enter> selects submenus --->. │
│ Highlighted letters are hotkeys. Pressing <Y> includes, <N> excludes, │
│ <M> modularizes features. Press <Esc><Esc> to exit, <?> for Help, </> │
│ for Search. Legend: [*] built-in [ ] excluded <M> module < > │
│ ┌─────────────────────────────────────────────────────────────────────┐ │
│ │ --- Video capture adapters │ │
│ │ [ ] Enable advanced debug functionality │ │
│ │ [ ] Autoselect pertinent encoders/decoders and other helper chi│ │
│ │ Encoders/decoders and other helper chips ---> │ │
│ │ < > Virtual Video Driver │ │
│ │ < > SAA5246A, SAA5281 Teletext processor │ │
│ │ < > SAA5249 Teletext processor │ │
│ │ < > Philips SAA7134 support │ │
│ │ < > Hexium HV-PCI6 and Orion frame grabber │ │
│ │ < > Hexium Gemini frame grabber │ │
│ │ < > Conexant 2388x (bt878 successor) support │ │
│ │ <M> Geode LX Video capture interface ---> │ │
│ │ < > Marvell 88ALP01 (Cafe) CMOS Camera Controller support │ │
│ │ [ ] V4L USB devices ---> │ │
│ └─────────────────────────────────────────────────────────────────────┘ │
├─────────────────────────────────────────────────────────────────────────┤
│ <Select> < Exit > < Help > │
└─────────────────────────────────────────────────────────────────────────┘
</pre>

If you are using SB-iGLX base board disable '''"Autoselect pertinent encoders/decoders and other helper chips"''' option and select SAA7113 video decoder:

<pre>
.config - Linux Kernel v2.6.24 Configuration
──────────────────────────────────────────────────────────────────────────────
┌─────────────── Encoders/decoders and other helper chips ────────────────┐
│ Arrow keys navigate the menu. <Enter> selects submenus --->. │
│ Highlighted letters are hotkeys. Pressing <Y> includes, <N> excludes, │
│ <M> modularizes features. Press <Esc><Esc> to exit, <?> for Help, </> │
│ for Search. Legend: [*] built-in [ ] excluded <M> module < > │
│ ┌─────────────────────────────────────────────────────────────────────┐ │
│ │ *** Audio decoders *** │ │
│ │ < > Philips TDA9840 audio processor │ │
│ │ < > Philips TEA6415C audio processor │ │
│ │ < > Philips TEA6420 audio processor │ │
│ │ < > Micronas MSP34xx audio decoders │ │
│ │ < > Cirrus Logic CS53L32A audio ADC │ │
│ │ < > Texas Instruments TLV320AIC23B audio codec │ │
│ │ < > Wolfson Microelectronics WM8775 audio ADC with input mixer │ │
│ │ < > Wolfson Microelectronics WM8739 stereo audio ADC │ │
│ │ < > Panasonic VP27s internal MPX │ │
│ │ *** Video decoders *** │ │
│ │ < > OmniVision OV7670 sensor support │ │
│ │ < > TCM825x camera sensor support │ │
│ │ <M> Philips SAA7113/4/5 video decoders │ │
│ │ < > Texas Instruments TVP5150 video decoder │ │
│ │ *** Video and audio decoders *** │ │
│ │ < > Conexant CX2584x audio/video decoders │ │
│ │ *** MPEG video encoders *** │ │
│ │ < > Conexant CX2341x MPEG encoders │ │
│ │ *** Video encoders *** │ │
│ │ < > Philips SAA7127/9 digital video encoders │ │
│ │ *** Video improvement chips *** │ │
│ │ < > NEC Electronics uPD64031A Ghost Reduction │ │
│ │ < > NEC Electronics uPD64083 3-Dimensional Y/C separation │ │
│ └─────────────────────────────────────────────────────────────────────┘ │
├─────────────────────────────────────────────────────────────────────────┤
│ <Select> < Exit > < Help > │
└─────────────────────────────────────────────────────────────────────────┘
</pre>

= Application examples =

The [http://www.compulab.co.il/mediawiki/files/Linux/iglx/geodelx-v4l2.tar.gz geodelx-v4l2 package] includes two simple examples for video capture and video overlay.

== Capture ==
The capture example accepts the following command line options:

<pre>
-d | --device name Video device name [/dev/video]
-h | --help Print this message
-m | --mmap Use memory mapped buffers
-r | --read Use read() calls
-o | --output Capture to file [file]
</pre>

== Overlay ==
The overlay example accepts the following command line options:

<pre>
-d | --device name Video device name [/dev/video]
-w | --width value Overlay window width [640]
-e | --height value Overlay window height [480]
-l | --left value Overlay window left coord [0]
-t | --top value Overlay window top coord [0]
-s | --steps value Steps for control adjustment []
-v | --verbose Verbose output
-h | --help Print this message
</pre>

@@ Line 1: / Line 1: @@
 = Introduction =
 CM-iGLX has Video Input Port (VIP in short) integrated into Geode LX processor. The VIP receives data from video decoder (for instance SAA7113h assembled on the SB-iGLX) and this data can be stored as a video stream or presented as a display overlay. This functionality can be enabled in using [http://v4l2spec.bytesex.org/ "Video for Linux 2 (v4l2)" API].
-COmpuLab provides [http://www.compulab.co.il/mediawiki/files/Linux/iglx/geodelx-v4l2.tar.gz geodelx-v4l2 package] which contains a driver that implements the v4l2 API on CM-iGLX ({{filename|geodelx-v4l2/geode_lx_video.patch}}) and application examples for video capture ({{filename|geodelx-v4l2/examples/capture.c}}) and video overlay ({{filename|geodelx-v4l2/examples/overlay.c}}).
+CompuLab provides [http://www.compulab.co.il/mediawiki/files/Linux/iglx/geodelx-v4l2.tar.gz geodelx-v4l2 package] which contains a driver that implements the v4l2 API on CM-iGLX ({{filename|geodelx-v4l2/geode_lx_video.patch}}) and application examples for video capture ({{filename|geodelx-v4l2/examples/capture.c}}) and video overlay ({{filename|geodelx-v4l2/examples/overlay.c}}).
 = Kernel configuration =
-The v4l2 driver for CM-iGLX is available as a patch vs. [http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.24.tar.bz2 Linux kernel 2.6.24]. After applying the patch to kernel source tree you will need to enable the [[#Geode LX framebuffer driver]] and
+The v4l2 driver for CM-iGLX included in the [http://www.compulab.co.il/mediawiki/files/Linux/iglx/geodelx-v4l2.tar.gz geodelx-v4l2 package] is available as a patch vs. [http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.24.tar.bz2 Linux kernel 2.6.24]. After applying the patch to kernel source tree you will need to enable the [[#Geode LX framebuffer driver]] and
 [[#Geode LX v4l2 driver]]. After updating kernel configuration as described below, build the kernel and install the resulting image and loadable kernel modules to CM-iGLX.

CM-iGLX Video Input Port - Revision history

Mike: CM-iGLX Video Input Port moved to CM-iGLX: Linux: Video Input Port

Mike at 12:00, 25 May 2008

Mike: New page: = Introduction = CM-iGLX has Video Input Port (VIP in short) integrated into Geode LX processor. The VIP receives data from video decoder (for instance SAA7113h assembled on the SB-iGLX) a...