I.MX6 Framebuffer Overlay - Revision history

JulienB: /* Instructions */

2017-04-20T13:07:36Z

Instructions

← Older revision		Revision as of 15:07, 20 April 2017
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	** here we move overlay to (200,200):<pre class="apf"># ./fb_alpha -x 200 -y 200</pre>		** 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>		** same but with no transparency: <pre class="apf"># ./fb_alpha -x 200 -y 200 -g 1 -a 255</pre>
			** same with alpha color/key set to GREEN: <pre class="apf"># ./fb_alpha -x 200 -y 200 -g 1 -a 255 -k 0x00FF00</pre>

	[[Category:Framebuffer]]		[[Category:Framebuffer]]

JulienB: /* Tools */

2017-04-20T11:07:09Z

Tools

← Older revision		Revision as of 13:07, 20 April 2017
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	=Tools=		=Tools=
	* you will need to compile ~~and install~~ following tools:		* you will need to compile following tools:
			<pre class="host">
			$ cd target/demos/fb_alpha
			$ ../../../buildroot/output/host/usr/bin/arm-linux-gnueabihf-gcc -o fb_alpha fb_alpha.c
			</pre>
			* install ''fb_alpha'' on your board's rootfs

	=Instructions=		=Instructions=

JulienB: /* Instructions */

2017-04-20T11:01:06Z

Instructions

← Older revision		Revision as of 13:01, 20 April 2017
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	=Instructions=		=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">		<pre class="apf">
	# modprobe adv7280_tvin		# modprobe adv7280_tvin
Line 15:		Line 15:
	# gst-launch-1.0 imxv4l2videosrc ! imxg2dvideosink &		# gst-launch-1.0 imxv4l2videosrc ! imxg2dvideosink &
	</pre>		</pre>
	* Then activate auxiliary Framebuffer:		* Then activate auxiliary Framebuffer (''/dev/fb1''):
	<pre class="apf">		<pre class="apf">
	# echo 0 > /sys/class/graphics/fb1/blank		# echo 0 > /sys/class/graphics/fb1/blank

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]]