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

Fix for older Perfection 1650 scanners - their firmware only reports half 

of the vertical scanning area and they need to swap two color channels.
DEVEL_2_0_BRANCH-1
Karl Heinz Kremer 2001-10-20 18:43:34 +00:00
rodzic 78f17f9b4b
commit 2184c24468
1 zmienionych plików z 30 dodań i 2 usunięć
Pokaż statystyki Ściągnij plik aktualizacji Ściągnij plik porównania Expand all files Collapse all files

32
backend/epson.c
Wyświetl plik

@ -16,8 +16,8 @@
*/
#define SANE_EPSON_VERSION "SANE Epson Backend v0.2.08 - 2001-06-09"
#define SANE_EPSON_BUILD 208
#define SANE_EPSON_VERSION "SANE Epson Backend v0.2.11 - 2001-10-19"
#define SANE_EPSON_BUILD 211
/*
This file is part of the SANE package.
@ -1602,6 +1602,9 @@ static SANE_Status attach ( const char * dev_name, Epson_Device * * devp) {
s->hw->color_shuffle = SANE_FALSE;
s->hw->extension = SANE_FALSE;
s->hw->use_extension = SANE_FALSE;
s->hw->need_color_reorder = SANE_FALSE;
s->hw->need_double_vertical = SANE_FALSE;
s->hw->cmd = &epson_cmd[EPSON_LEVEL_DEFAULT]; /* use default function level */
s->hw->connection = SANE_EPSON_NODEV; /* no device configured yet */
@ -1904,6 +1907,21 @@ static SANE_Status attach ( const char * dev_name, Epson_Device * * devp) {
dev->x_range = &dev->fbf_x_range;
dev->y_range = &dev->fbf_y_range;
/*
* Correct for a firmware bug in some Perfection 1650 scanners:
* Firmware version 1.08 reports only half the vertical scan area, we have
* to double the number. To find out if we have to do this, we just compare
* is the vertical range is smaller than the horizontal range.
*/
if ((dev->x_range->max - dev->x_range->min) > (dev->y_range->max - dev->y_range->max))
{
dev->y_range->max += (dev->y_range->max - dev->y_range->min);
dev->need_double_vertical = SANE_TRUE;
dev->need_color_reorder = SANE_TRUE;
}
/*
* Extended status flag request (ESC f).
* this also requests the scanner device name from the the scanner
@ -4656,6 +4674,16 @@ START_READ:
s->params.format == SANE_FRAME_RGB &&
s->hw->maxDepth == 14;
/*
* Certain Perfection 1650 also need this re-ordering of the two color channels.
* These scanners are identified by the problem with the half vertical scanning
* area. When we corrected this, we also set the variable s->hw->need_color_reorder
*/
if (s->hw->need_color_reorder)
{
needStrangeReorder = SANE_TRUE;
}
if (needStrangeReorder)
reorder = !reorder;