Video Encoding in DM8168

Hi Salih,

Please refer capture_encode demo provided with this package. Thsi example capture component video using TVP7002 video decoder and encodes the same using H264 encoder.

Hi Ramprasad,

I want to know whether interlaced and De-interlaced modes are tested with this TVP7002. If so which application used to test the same. If G-streamer is used to do this test case what is the command to execute in the target.

Thanks in advance.

Regards,

Salih

Hi Salih,

Yes capture_encode supports both interlace and progressive capture.

Refer http://processors.wiki.ti.com/index.php/OMX_EZSDK_Examples#Capture_Encode for details.

This application uses VFCC OMX component for capturing.

If you want to use Gstreamer ,then pluggin for OMX capture is not available, you will have to use V4L2 capture

There are applications (saLoopBack) provided to test V4L2 capture and display, you can use them.

Build the executable for these application using

make psp-exampes command, it will build sample V4L2 applications in ti-ezsdk_dm816x-evm_5_05_02_00/example-applications/linux-driver-examples-psp04.04.00.01/video/bin

Information on V4L2 application is available here

http://processors.wiki.ti.com/index.php/TI81XX_PSP_VIDEO_CAPTURE_Driver_User_Guide

Hi,

Is it possible to set my default display as LCD while booting instead of HDMI?. If so, what is the procedure to do the same.

Thanks in advance.

Regards,

Salih

Salih,

Muhammad Salih said:

Is it possible to set my default display as LCD while booting instead of HDMI?. If so, what is the procedure to do the same.

May be the approach from DM814x will be in help here. In ti-ezsdk_dm814x-evm_5_05_02_00/docs/DM814x_EZ_Software_Developers_Guide.pdf, section 6.10 How to change the display from HDMI to LCD we have:

How to change the display from HDMI to LCD
The EZ SDK supports multiple displays but by default displays on the HDMI. To change the display to LCD ,
you can execute the following commands once the EVM boots

target# /etc/init.d/matrix-gui-e stop
target# echo 0 > /sys/devices/platform/vpss/display1/enabled
target# echo 29232,800/40/40/48, 480/13/29/3,1/3 > /sys/devices/platform/vpss/display1/timings
target# echo triplediscrete,rgb888,0/0/1/0 > /sys/devices/platform/vpss/display1/output
target# echo 1 > /sys/devices/platform/vpss/display1/enabled
target# fbset -xres 800 -yres 480 -vxres 800 -vyres 480
target# echo 1:dvo2 > /sys/devices/platform/vpss/graphics0/nodes

You can start matrix launcher now, But before starting perform the action mentioned in Note2 below

Refer Video Driver User Guide at
<_your_EZSDK_install_>/board-support/docs/TI81XX_VPSS_Video_Driver_User_Guide.pdf

Note1: To switch the video the below command needs to be executed

target # echo vcompmux:dvo2 > /sys/devices/platform/vpss/video0/nodes
target # cd /usr/share/ti/ti-media-controller-utils
target # ./change_display.sh lcd

Note2: After the switch if you need to start matrix launcher ensure to enable touch screen calibration for LCD.
For this the line which calls calibrate function in file /etc/init.d/matrix-gui-e in target file system needs to be
uncommented. If this is not done, then mouse movement is unpredictable.

Regards,
Pavel

Do you mean in bootlogo?

Rgds,

Brijesh

Hi,

Thanks for your input. But in my EZSDK I am not seeing the script file change_display.sh to change the display for video. Could please give me solution on where to get the same file?.

Thanks in advance.

Regards,

Salih

Salih,

This shell script is available in the DM814x EZSDK:

/ti-ezsdk_dm814x-evm_5_05_02_00/board-support/media-controller-utils_3_00_00_05/src/linux/ti814x-evm/change_display.sh

I am attaching it: 3603.change_display.sh

Regards,
Pavel

Hi Pavel,

Thanks for your input. But even if I executed this script, still HDMI only set as default display while rebooting the system. My goal is to play a video in the LCD using G-streamer application. Please help me out to do the same.

Thanks in advance.

Regards,

Salih

Salih,

Muhammad Salih said:

My goal is to play a video in the LCD

I can provide you the below pointers:

http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/99/t/110421.aspx

http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/717/t/164800.aspx

http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/717/t/140792.aspx

http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/717/t/356993.aspx

http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/717/t/100349.aspx

Regards,
Pavel