I.MX6 Framebuffer Overlay - Revision history

JulienB: /* Instructions */

2017-04-20T13:07:36Z

‎Instructions

JulienB: /* Tools */

2017-04-20T11:07:09Z

‎Tools

JulienB: /* Instructions */

2017-04-20T11:01:06Z

‎Instructions

JulienB: Created page with "{{Under_Construction}} i.MX6 offers hardware composition of 2 framebuffers for video output. Here are the instructions on how to use it. {{Note|These instructions are only a..."

2017-04-20T10:59:59Z

Created page with "{{Under_Construction}} i.MX6 offers hardware composition of 2 framebuffers for video output. Here are the instructions on how to use it. {{Note|These instructions are only a..."

New page

{{Under_Construction}}

i.MX6 offers hardware composition of 2 framebuffers for video output. Here are the instructions on how to use it.

{{Note|These instructions are only available on [[APF6]] with 3.14 Freescale kernel (''apf6legacy_defconfig'')}}

=Tools=
* you will need to compile and install following tools:

=Instructions=
* Display something on main Framebuffer (/dev/fb0), here the stream from an analog camera:
<pre class="apf">
# modprobe adv7280_tvin
# modprobe mxc_v4l2_capture
# gst-launch-1.0 imxv4l2videosrc ! imxg2dvideosink &
</pre>
* Then activate auxiliary Framebuffer:
<pre class="apf">
# echo 0 > /sys/class/graphics/fb1/blank
</pre>
* and put it some stuff on it:
<pre class="apf">
# fb-test -f 1 &
</pre>
* then you can set alpha/overlay parameters with ''fb_alpha'' tool:
** here we move overlay to (200,200):<pre class="apf"># ./fb_alpha -x 200 -y 200</pre>
** same but with no transparency: <pre class="apf"># ./fb_alpha -x 200 -y 200 -g 1 -a 255</pre>

[[Category:Framebuffer]]

@@ Line 31: / Line 31: @@
 ** here we move overlay to (200,200):<pre class="apf"># ./fb_alpha -x 200 -y 200</pre>
 ** same but with no transparency: <pre class="apf"># ./fb_alpha -x 200 -y 200 -g 1 -a 255</pre>
 [[Category:Framebuffer]]

@@ Line 6: / Line 6: @@
 =Tools=
-* you will need to compile and install following tools:
+* you will need to compile following tools:
 =Instructions=

@@ Line 9: / Line 9: @@
 =Instructions=
-* Display something on main Framebuffer (/dev/fb0), here the stream from an analog camera:
+* Display something on main Framebuffer (''/dev/fb0''), here the stream from an analog camera:
 <pre class="apf">
 # modprobe adv7280_tvin
@@ Line 15: / Line 15: @@
 # gst-launch-1.0 imxv4l2videosrc ! imxg2dvideosink &
 </pre>
-* Then activate auxiliary Framebuffer:
+* Then activate auxiliary Framebuffer (''/dev/fb1''):
 <pre class="apf">
 # echo 0 > /sys/class/graphics/fb1/blank