mirror
/
sane-project-backends
kopia lustrzana https://gitlab.com/sane-project/backends
1
0
Forkuj 0
Kod Zgłoszenia Projekty Wydania Wiki Aktywność

Another fix for lineart mode for the Epson 3490 @ 3200 DPI

merge-requests/1/head
Oliver Schwartz 2005-12-02 19:12:54 +00:00
rodzic ed6dc539dc
commit 39575524dc
2 zmienionych plików z 19 dodań i 10 usunięć
Pokaż statystyki Ściągnij plik aktualizacji Ściągnij plik porównania Expand all files Collapse all files

5
ChangeLog
Wyświetl plik

@ -1,3 +1,8 @@
2005-12-02 Oliver Schwartz <Oliver.Schwartz@gmx.de>
* backend/snapscan-sources.c: Another fix for lineart mode for the
Epson 3490 @ 3200 DPI - this time tested
2005-12-01 Henning Meier-Geinitz <henning@meier-geinitz.de>
* doc/descriptions/unsupported.desc: Added link for Corex Cardscan

24
backend/snapscan-sources.c
Wyświetl plik

@ -746,16 +746,16 @@ static SANE_Status Deinterlacer_get (Source *pself, SANE_Byte *pbuf, SANE_Int *p
{
if (ps->ch_shift_even)
{
/* Even pixels need to be shifted, i.e. bits 0,2,4,6 -> 0x55 */
/* Even columns need to be shifted, i.e. bits 1,3,5,7 -> 0xaa */
/* use valid pixels from this line and shifted pixels from ch_size lines back */
*pbuf = (ps->ch_buf[ps->ch_pos] & 0xaa) |
(ps->ch_buf[(ps->ch_pos + (ps->ch_line_size)) % ps->ch_size] & 0x55);
*pbuf = (ps->ch_buf[ps->ch_pos] & 0x55) |
(ps->ch_buf[(ps->ch_pos + (ps->ch_line_size)) % ps->ch_size] & 0xaa);
}
else
{
/* Odd pixels need to be shifted, i.e. bits 1,3,5,7 -> 0xaa */
*pbuf = (ps->ch_buf[ps->ch_pos] & 0x55) |
(ps->ch_buf[(ps->ch_pos + (ps->ch_line_size)) % ps->ch_size] & 0xaa);
/* Odd columns need to be shifted, i.e. bits 0,2,4,6 -> 0x55 */
*pbuf = (ps->ch_buf[ps->ch_pos] & 0xaa) |
(ps->ch_buf[(ps->ch_pos + (ps->ch_line_size)) % ps->ch_size] & 0x55);
}
}
else
@ -763,14 +763,15 @@ static SANE_Status Deinterlacer_get (Source *pself, SANE_Byte *pbuf, SANE_Int *p
/* not enough data. duplicate pixel values from previous column */
if (ps->ch_shift_even)
{
/* bits 1,3,5,7 contain valid data -> 0xaa */
SANE_Byte valid_pixel = ps->ch_buf[ps->ch_pos] & 0xaa;
/* bits 0,2,4,6 contain valid data -> 0x55 */
SANE_Byte valid_pixel = ps->ch_buf[ps->ch_pos] & 0x55;
*pbuf = valid_pixel | (valid_pixel >> 1);
}
else
{
/* bits 0,2,4,6 contain valid data -> 0x55 */
SANE_Byte valid_pixel = ps->ch_buf[ps->ch_pos] & 0x55;
/* bits 1,3,5,7 contain valid data -> 0xaa */
SANE_Byte valid_pixel = ps->ch_buf[ps->ch_pos] & 0xaa;
*pbuf = valid_pixel | (valid_pixel << 1);
}
}
@ -1242,6 +1243,9 @@ static SANE_Status create_source_chain (SnapScan_Scanner *pss,
/*
* $Log$
* Revision 1.21 2005/12/02 19:12:54 oliver-guest
* Another fix for lineart mode for the Epson 3490 @ 3200 DPI
*
* Revision 1.20 2005/11/28 19:28:29 oliver-guest
* Fix for lineart mode of Epson 3490 @ 3200 DPI
*