DM8127 IPNC How to display image(temp.jpg) on HDMI out using frame-buffer /dev/fb*

Hi RAJ,

You could FBDev for displaying RGB frame format. It is a standard Linux frame buffer interface for displaying RGB contents. Please go through FBdev user guide in VPSS to know more about it.

Regards,

Brijesh Jadav

Hi Brijesh Jadav,

Thank you for replaying.

this is my fb0 settings,

root@DM8127_IPNC:/opt/ipnc# fbset -fb /dev/fb0

mode "1920x1080-60"
    # D: 148.500 MHz, H: 67.500 kHz, V: 60.000 Hz
    geometry 1920 1080 1920 1080 32
    timings 6734 148 88 36 4 44 5
    rgba 8/16,8/8,8/0,8/24
endmode

how to pass my image to /dev/fb0  i can open my device successfully using

        static int fd;
       /* Open a graphics Display logical channel in blocking mode */
        fd = open("/dev/fb0", O_RDWR);
        if (fd == -1)
        {
                perror("failed to open display device\n");
                return -1;
        }
please share sample or example code for displaying image on hdmi out through frame-buffer

vpss document they mansion some example but i can't find?

Thanks and Regards

     RAJ M

Hi Brijesh,

Please share the below examples

saFbdevDisplay

saFbdevDisplayPan

saFbdevMovingDisplay

saFbdevScalingDisplay

saLoopBack

saLoopBackFbdev

saLoopBackScale

saFbdevHdmiDisplay

saMmapDisplay

saUserptrDisplay

Regards

  RAJ M

Hi RAJ,

It should be there as part of PSP release. Please look into examples folder and there should be file saFbDevDisplay.

Regards,

Brijesh

Hi Brijesh,

i searched ipnc_rdk and ti_tools but can't find those files please share me or tell me the exact path of this file.

Regards

  RAJ M

Hi Brijiesh,

i found the saFbDevDisplay.c its working to display rgb colour bar. my question is instead of colour bar i want to send my image (temp.jpg) this is the function

  /* Color bar display loop */
        for (i = 0 ; i < loop_count; i ++) {
                /* Fill the buffers with the color bars */
                fill_color_bar(buffer_addr, fixinfo.line_length,
                                varinfo.yres, varinfo.bits_per_pixel);
                sleep(1);
                fill_reverse_color_bar(buffer_addr, fixinfo.line_length,
                                varinfo.yres, varinfo.bits_per_pixel);
                sleep(1);
        }

Thanks and Regards

     RAJ M