Linux/TMS320DM8127: Coloring OSD Text

Mechi Fendel

Part Number: TMS320DM8127

Tool/software: Linux

In a previous thread - where I can't open up any new messages - :

Hi Mechi,

There is only white color font having different size with YUV420SP Y and UV files which are available at Source/ipnc_rdk/ipnc_mcfw/mcfw/src_bios6/links_m3vpss/alg/sw_osd/fonts/.

You can use any color font by generating YUV420SP Y and UV separate files and add it in Source/ipnc_rdk/ipnc_mcfw/mcfw/src_bios6/links_m3vpss/SRC_FILES.MK SRCS_SWOSD.

Regards,

Prashant

The characters that can be used for the OSD text are :

#define SWOSD_STRINGPATTERN "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz:; '/\\+-_()&$#.0123456789"

I understand that the files you mentioned contain the Y and UV data for these characters.

Is there a tool to make these files?
How are they arranged?
If I want to add a new character, is it possible?
If I want the text to sometimes be white and sometimes be red, how do I specify this? I can't imagine that making a new UV file for the red lettering, without adding to the source code of the SWOSD lib' the red text could be displayed.

Thanks for this important information - I will try to build a new RED font which will be used when red lettering is needed. Is this the way to proceed?

Thanks,

Mechi

over 6 years ago

0 Pavel Botev over 6 years ago

TI__Guru**** 170625 points

Hi Mechi,

You should be able now to reply in the original thread. Please continue the discussion on the original thread.

Regards,
Pavel

0 Prashant A over 6 years ago

Intellectual 760 points

Hi Mechi,

Steps to generate Y and UV text files:

Open Paint and Create JPEG file with all characters having equal size(width). Here you need to use font color as red if you want red OSD fonts.
Convert JPEG to YUV420SP and create separate Y and UV character array files.

Need to write in sequence in SWOSD_STRINGPATTERN as per Y and UV files. Yes you can add new character but make sure you add it in SWOSD_STRINGPATTERN too.

For your last point, You can change font color runtime as it is changing font size as per resolution. Here you need to write new API/case to change color(change to red font buffer address).

Regards,
Prashant
Pathpartner Technology Pvt. Ltd.

0 Mechi Fendel over 6 years ago in reply to Prashant A

Genius 4405 points

How is this done?
>> Convert JPEG to YUV420SP

0 Mechi Fendel over 6 years ago in reply to Mechi Fendel

Genius 4405 points

Hi,

We have prepared 4 colored fonts. I need to use these fonts for different screen resolutions.

Since memory is at a premium, I don't want to allocate more than is necessary. I was wondering why the fontDB is an array of 256 integers?

int fontDB1232_Y1[256], fontDB1232_UV1[256];

int fontDB1078_Y1[256], fontDB1078_UV1[256];

I do not have the code for the function SWOSD_createFontDatabase that creates the Font Database.

I do know that there are 77 characters -

#define SWOSD_STRINGPATTERN "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz:; '/\\+-_()&$#.0123456789"

SWOSD_createFontDatabase(fontDB1078_Y1, fontDB1078_UV1, (char *) SWOSD_STRINGPATTERN, &fontInfo);

I'm wondering if this is a set size that can't be changed? If I only want the 26 UPPERcase letters, can I save room in the fontDB arrays?

Thanks,

Mechi

0 Prashant A over 6 years ago in reply to Mechi Fendel

Intellectual 760 points

Hi Mechi,

Yes, you can update SWOSD_STRINGPATTERN as per your requirement which will be used in memcpy(fontBuff1232_Y1, YData_1232_30_WFONT_PURE, SWOSD_STRINGWIDTH_1232_30 * SWOSD_CHARHEIGHT_1232_30);

Here SWOSD_STRINGWIDTH_1232_30 is SWOSD_STRINGPATTERN * SWOSD_CHARWIDTH_1232_30;

I think fontDB1078_UV1[256] is max size. you can try with less array size.

Regards,
Prashant
Pathpartner Technology Pvt. Ltd.

0 Mechi Fendel over 6 years ago in reply to Prashant A

Genius 4405 points

We succeeded in getting colored fonts...

The picture is not in focus, but the OSD writing is apparent on top and bottom rows.

Processors

Processors forum

Linux/TMS320DM8127: Coloring OSD Text