[twobob]

Originally Posted by Lydovig

Sorry for my English.

Here:

https://www.mobileread.com/forums/sho...h+video+player

a moving image is formed faster and better, is it possible to apply this principle in your flash player?

After ANOTHER enormous amount of messing around. I still cant get the gst stuff to work mate

I would politely suggest that what is in fact needed is an ordered dither algorithm https://www.mobileread.com/forums/sho...d.php?t=176802
there is one implementation.

Also the source code for GnuBoy contains a 2 bit ordered dither implementation IIRC. I should go check. and probably the VNC client that hawhill built has one in too.

Obviously the Geekmaster video player also calls on this method (albeit a slightly older version IIRC)

The code is out there. needs welding back into the other apps.

I am struggling if I am honest with the concepts and currently failing to implement an ordered dither in SDL. but this is the solution probably.

: ) HTH

EDIT: There is quite a lot of "fiddling about" to be done to support all the various devices.

falling back to a simple system("eips ''") at least should invoke some response of all of them rather than the system level driver calls like:
ioctl(fd, FBIOGET_FSCREENINFO, &finfo) as they fail on my device. and others.


EDIT...

Here's a bit ripped from gnuboy's pallete update section....
I think this is the bit that refactors the pallete. Could be wrong

Spoiler:

PHP Code:


uint8_t odither_e[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F,
0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F,
0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F,
0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F,
0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F,
0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F,
0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F,
0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F,
0x0F, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
uint8_t odither_o[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0,
0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0,
0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0,
0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0,
0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0,
0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0,
0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0,
0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };

void vid_end()
{
    int x, y;
    uint8_t *src;
    uint8_t *dst_e;
    uint8_t *dst_o;
    int skip = finfo.line_length*2 - 160 * (vinfo.bits_per_pixel >> 2);

//    if(0 == c++ % 2) { /*frameskip*/
        src = fbtemp;
        if(vinfo.bits_per_pixel == 4) {
            dst_e = fbdata + (xoffs >> 1) + yoffs * finfo.line_length;
            dst_o = dst_e + finfo.line_length;

            for(y = 0; y < 144; y++) {
                for(x = 0; x < 160; x++) {
                    *dst_e = odither_e[*src];
                    *dst_o = odither_o[*src];
                    dst_e++;
                    dst_o++;
                    src++;
                }
                dst_e += skip;
                dst_o += skip;
            }
        } else { // 8bpp
            dst_e = fbdata + xoffs + yoffs * finfo.line_length;
            dst_o = dst_e + finfo.line_length;

            for(y = 0; y < 144; y++) {
                for(x = 0; x < 160; x++) {
                    *dst_e = odither_e[*src] & 0xF0;
                    *dst_e = *dst_e | (*dst_e >> 4);
                    dst_e++;
                    *dst_e = odither_e[*src] & 0x0F;
                    *dst_e = *dst_e | (*dst_e << 4);
                    dst_e++;
                    *dst_o = odither_o[*src] & 0xF0;
                    *dst_o = *dst_o | (*dst_o >> 4);
                    dst_o++;
                    *dst_e = odither_o[*src] & 0x0F;
                    *dst_e = *dst_o | (*dst_o << 4);
                    dst_o++;
                    src++;
                }
                dst_e += skip;
                dst_o += skip;
            }
        }
        update_area_t myarea;
        myarea.x1 = xoffs;
        myarea.x2 = 320 + xoffs;
        myarea.y1 = yoffs;
        myarea.y2 = 288 + yoffs;
        myarea.buffer = NULL;
        myarea.which_fx = fx_update_partial;
        ioctl(fd, FBIO_EINK_UPDATE_DISPLAY_AREA, &myarea);
//    }
} 


the last bit: ioctl(fd, FBIO_EINK_UPDATE_DISPLAY_AREA, &myarea);
I would probably shelve and just update the lot.

you get the idea anyways.
bit shift palette to black and white in an ordered way.

This would be a code level change. for sure.