Hi Xperts,
I did managed to modify the decode demo code itself. When we are calling
cleanupDisplayDevice() function, inside it i am resetting all the pixel
values to " 0x10801080 ". It sets the fb/3 colour to black. But only problem
it takes a lot of time to set the colour to black and come out of it.
It takes 3-5 seconds to fill's the screen with black colour. Ideally it
should be done this way. Thats lot of time for my application.
Is there a better way to speed up the process by the following code , .i.e
"
for (bufIdx=0; bufIdx < NUM_DISPLAY_BUFS; bufIdx++) {
/* Clear the video buffer */
buf = (unsigned int *) virtDisplays[bufIdx];
for (i=0; i < displaySize / sizeof(unsigned int); i++) {
buf[i] = UYVY_BLACK;
}
"
As " cat /dev/zero > /dev/fb/3 " sets the colour as green, any system
command to change the colour to black ?
Warm Regards,
Sagar
On 1/16/09, sunder ramani <[email protected]> wrote:
>
> Hi Sagar,
>
> The flushing of the device with the zeros was only a type of workaround.
> Ideally, you should clear the device buffers by clearing the values in the
> device buffers which are mapped by the application. It would enable you to
> clear the device with whatever color of values you want!!
>
> Hope this helps!
>
> Cheers!
> Sundar
>
> On Fri, Jan 16, 2009 at 7:04 PM, Ragas sag <[email protected]> wrote:
>
>> Hi Xperts
>>
>> Thank you Sunder for the reply. And i tried as you suggested. It works.
>> But the screen becomes become blank with green colour ?
>> Can't it be made black colour? I tried to see if other than zero do we
>> have anything in the /dev directory.
>>
>> In case if anybody can tell me how to make it black colour, it would he
>> helpful.
>>
>> Warm Regards,
>> Sagar
>>
>> On 1/16/09, sunder ramani <[email protected]> wrote:
>>>
>>> Hi Sagar,
>>>
>>> The fbset command actually modifies the size of the window and does not
>>> have any operation on the contents of the window.
>>>
>>> For a simple flush, cat /dev/zero > /dev/fb/X should help you to clear
>>> away the window contents.
>>>
>>> Thanx!
>>> Sundar
>>>
>>
>>
>
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