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sane-project-backends/backend/niash_xfer.c

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/*
Copyright (C) 2001 Bertrik Sikken (bertrik@zonnet.nl)
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
$Id$
*/
/*
Provides a simple interface to read and write data from the scanner,
without any knowledge whether it's a parallel or USB scanner
*/
#include <stdio.h> /* printf */
#include <errno.h> /* better error reports */
#include <string.h> /* better error reports */
#include "niash_xfer.h"
#include "../include/sane/sanei_usb.h"
/* list of supported models */
STATIC TScannerModel ScannerModels[] = {
{"Hewlett-Packard", "ScanJet 3300C", 0x3F0, 0x205, eHp3300c}
,
{"Hewlett-Packard", "ScanJet 3400C", 0x3F0, 0x405, eHp3400c}
,
{"Hewlett-Packard", "ScanJet 4300C", 0x3F0, 0x305, eHp4300c}
,
{"Silitek Corp.", "HP ScanJet 4300c", 0x47b, 0x1002, eHp3400c}
,
{"Agfa", "Snapscan Touch", 0x6BD, 0x100, eAgfaTouch}
,
{"Trust", "Office Scanner USB 19200", 0x47b, 0x1000, eAgfaTouch}
,
/* last entry all zeros */
{0, 0, 0, 0, 0}
};
static TFnReportDevice *_pfnReportDevice;
static TScannerModel *_pModel;
/*
MatchUsbDevice
==============
Matches a given USB vendor and product id against a list of
supported scanners.
IN iVendor USB vendor ID
iProduct USB product ID
OUT *ppModel Pointer to TScannerModel structure
Returns TRUE if a matching USB scanner was found
*/
STATIC SANE_Bool
MatchUsbDevice (int iVendor, int iProduct, TScannerModel ** ppModel)
{
TScannerModel *pModels = ScannerModels;
DBG (DBG_MSG, "Matching USB device 0x%04X-0x%04X ... ", iVendor, iProduct);
while (pModels->pszName != NULL)
{
if ((pModels->iVendor == iVendor) && (pModels->iProduct == iProduct))
{
DBG (DBG_MSG, "found %s %s\n", pModels->pszVendor,
pModels->pszName);
*ppModel = pModels;
return SANE_TRUE;
}
/* next model to match */
pModels++;
}
DBG (DBG_MSG, "nothing found\n");
return SANE_FALSE;
}
/************************************************************************
Public functions for the SANE compilation
************************************************************************/
/* callback for sanei_usb_attach_matching_devices */
static SANE_Status
_AttachUsb (SANE_String_Const devname)
{
DBG (DBG_MSG, "_AttachUsb: found %s\n", devname);
_pfnReportDevice (_pModel, (const char *) devname);
return SANE_STATUS_GOOD;
}
/*
NiashXferInit
===============
Initialises all registered data transfer modules, which causes
them to report any devices found through the pfnReport callback.
IN pfnReport Function to call to report a transfer device
*/
static void
NiashXferInit (TFnReportDevice * pfnReport)
{
TScannerModel *pModels = ScannerModels;
sanei_usb_init ();
_pfnReportDevice = pfnReport;
/* loop over all scanner models */
while (pModels->pszName != NULL)
{
DBG (DBG_MSG, "Looking for %s...\n", pModels->pszName);
_pModel = pModels;
if (sanei_usb_find_devices ((SANE_Int) pModels->iVendor,
(SANE_Int) pModels->iProduct,
_AttachUsb) != SANE_STATUS_GOOD)
{
DBG (DBG_ERR, "Error invoking sanei_usb_find_devices");
break;
}
pModels++;
}
}
static int
NiashXferOpen (const char *pszName, EScannerModel * peModel)
{
SANE_Status status;
SANE_Word vendor, product;
int fd;
TScannerModel *pModel = 0;
DBG (DBG_MSG, "Trying to open %s...\n", pszName);
status = sanei_usb_open (pszName, &fd);
if (status != SANE_STATUS_GOOD)
{
return -1;
}
status = sanei_usb_get_vendor_product (fd, &vendor, &product);
if (status == SANE_STATUS_GOOD)
{
MatchUsbDevice (vendor, product, &pModel);
*peModel = pModel->eModel;
}
DBG (DBG_MSG, "handle = %d\n", (int) fd);
return fd;
}
static void
NiashXferClose (int iHandle)
{
/* close usb device */
if (iHandle != -1)
{
sanei_usb_close (iHandle);
}
}
static void
parusb_write_reg (int fd, unsigned char bReg, unsigned char bValue)
{
sanei_usb_control_msg (fd,
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
0x0C, bReg, 0, 1, &bValue);
}
static void
parusb_read_reg (int fd, unsigned char bReg, unsigned char *pbValue)
{
sanei_usb_control_msg (fd,
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
0x0C, bReg, 0, 1, pbValue);
}
static void
NiashWriteReg (int iHandle, unsigned char bReg, unsigned char bData)
{
if (iHandle < 0)
{
DBG (DBG_MSG, "Invalid handle %d\n", iHandle);
return;
}
parusb_write_reg (iHandle, SPP_CONTROL, 0x14);
parusb_write_reg (iHandle, EPP_ADDR, bReg);
parusb_write_reg (iHandle, SPP_CONTROL, 0x14);
parusb_write_reg (iHandle, EPP_DATA_WRITE, bData);
parusb_write_reg (iHandle, SPP_CONTROL, 0x14);
}
static void
NiashReadReg (int iHandle, unsigned char bReg, unsigned char *pbData)
{
if (iHandle < 0)
{
return;
}
parusb_write_reg (iHandle, SPP_CONTROL, 0x14);
parusb_write_reg (iHandle, EPP_ADDR, bReg);
parusb_write_reg (iHandle, SPP_CONTROL, 0x34);
parusb_read_reg (iHandle, EPP_DATA_READ, pbData);
parusb_write_reg (iHandle, SPP_CONTROL, 0x14);
}
static void
NiashWriteBulk (int iHandle, unsigned char *pabBuf, int iSize)
{
/* byte abSetup[8] = {0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
HP3400 probably needs 0x01, 0x01 */
SANE_Byte abSetup[8] = { 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
size_t size;
if (iHandle < 0)
{
return;
}
/* select scanner register 0x24 */
parusb_write_reg (iHandle, SPP_CONTROL, 0x14);
parusb_write_reg (iHandle, EPP_ADDR, 0x24);
parusb_write_reg (iHandle, SPP_CONTROL, 0x14);
/* tell scanner that a bulk transfer follows */
abSetup[4] = (iSize) & 0xFF;
abSetup[5] = (iSize >> 8) & 0xFF;
sanei_usb_control_msg (iHandle,
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
0x04, USB_SETUP, 0, 8, abSetup);
/* do the bulk write */
size = iSize;
if (sanei_usb_write_bulk (iHandle, pabBuf, &size) != SANE_STATUS_GOOD)
{
DBG (DBG_ERR, "ERROR: Bulk write failed\n");
}
}
static void
NiashReadBulk (int iHandle, unsigned char *pabBuf, int iSize)
{
SANE_Byte abSetup[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
size_t size;
if (iHandle < 0)
{
return;
}
/* select scanner register 0x24 */
parusb_write_reg (iHandle, SPP_CONTROL, 0x14);
parusb_write_reg (iHandle, EPP_ADDR, 0x24);
parusb_write_reg (iHandle, SPP_CONTROL, 0x14);
/* tell scanner that a bulk transfer follows */
abSetup[4] = (iSize) & 0xFF;
abSetup[5] = (iSize >> 8) & 0xFF;
sanei_usb_control_msg (iHandle,
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
0x04, USB_SETUP, 0, 8, abSetup);
/* do the bulk read */
size = iSize;
if (sanei_usb_read_bulk (iHandle, pabBuf, &size) != SANE_STATUS_GOOD)
{
DBG (DBG_ERR, "ERROR: Bulk read failed\n");
}
}
static void
NiashWakeup (int iHandle)
{
unsigned char abMagic[] = { 0xA0, 0xA8, 0x50, 0x58, 0x90, 0x98, 0xC0, 0xC8,
0x90, 0x98, 0xE0, 0xE8
};
int i;
if (iHandle < 0)
{
return;
}
/* write magic startup sequence */
parusb_write_reg (iHandle, SPP_CONTROL, 0x14);
for (i = 0; i < (int) sizeof (abMagic); i++)
{
parusb_write_reg (iHandle, SPP_DATA, abMagic[i]);
}
/* write 0x04 to scanner register 0x00 the hard way */
parusb_write_reg (iHandle, SPP_DATA, 0x00);
parusb_write_reg (iHandle, SPP_CONTROL, 0x14);
parusb_write_reg (iHandle, SPP_CONTROL, 0x15);
parusb_write_reg (iHandle, SPP_CONTROL, 0x1D);
parusb_write_reg (iHandle, SPP_CONTROL, 0x15);
parusb_write_reg (iHandle, SPP_CONTROL, 0x14);
parusb_write_reg (iHandle, SPP_DATA, 0x04);
parusb_write_reg (iHandle, SPP_CONTROL, 0x14);
parusb_write_reg (iHandle, SPP_CONTROL, 0x15);
parusb_write_reg (iHandle, SPP_CONTROL, 0x17);
parusb_write_reg (iHandle, SPP_CONTROL, 0x15);
parusb_write_reg (iHandle, SPP_CONTROL, 0x14);
}
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