kopia lustrzana https://gitlab.com/sane-project/backends
369 wiersze
9.2 KiB
C
369 wiersze
9.2 KiB
C
/*.............................................................................
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* Project : SANE library for Plustek flatbed scanners.
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*.............................................................................
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*/
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/** @file plustek-pp_wrapper.c
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* @brief The interface to the parport driver-code and the kernel module.
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*
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* Based on sources acquired from Plustek Inc.<br>
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* Copyright (C) 2001-2003 Gerhard Jaeger <gerhard@gjaeger.de>
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*
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* History:
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* - 0.40 - initial version
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* - 0.41 - added _PTDRV_ADJUST call
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* - 0.42 - added setmap function
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* - fixed the stopscan problem, that causes a crash in the kernel module
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* - 0.43 - no changes
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* - 0.44 - added initialized setting
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* - 0.45 - no changes
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* - 0.46 - cleanup
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* .
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* <hr>
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* This file is part of the SANE package.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston,
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* MA 02111-1307, USA.
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*
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* As a special exception, the authors of SANE give permission for
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* additional uses of the libraries contained in this release of SANE.
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*
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* The exception is that, if you link a SANE library with other files
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* to produce an executable, this does not by itself cause the
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* resulting executable to be covered by the GNU General Public
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* License. Your use of that executable is in no way restricted on
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* account of linking the SANE library code into it.
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*
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* This exception does not, however, invalidate any other reasons why
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* the executable file might be covered by the GNU General Public
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* License.
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*
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* If you submit changes to SANE to the maintainers to be included in
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* a subsequent release, you agree by submitting the changes that
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* those changes may be distributed with this exception intact.
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*
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* If you write modifications of your own for SANE, it is your choice
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* whether to permit this exception to apply to your modifications.
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* If you do not wish that, delete this exception notice.
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* <hr>
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*/
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/******************* wrapper functions for parport device ********************/
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#ifndef _BACKEND_ENABLED
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static int PtDrvInit( char *dev_name, unsigned short model_override )
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{
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_VAR_NOT_USED( dev_name );
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_VAR_NOT_USED( model_override );
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DBG( _DBG_ERROR, "Backend does not support direct I/O!\n" );
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return -1;
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}
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static int PtDrvShutdown( void )
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{
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return 0;
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}
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static int PtDrvOpen( void )
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{
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DBG( _DBG_ERROR, "Backend does not support direct I/O!\n" );
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return -1;
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}
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static int PtDrvClose( void )
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{
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DBG( _DBG_ERROR, "Backend does not support direct I/O!\n" );
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return 0;
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}
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static int PtDrvIoctl( unsigned int cmd, void *arg )
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{
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DBG( _DBG_ERROR, "Backend does not support direct I/O!\n" );
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_VAR_NOT_USED( cmd );
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if( arg == NULL )
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return -2;
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return -1;
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}
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static int PtDrvRead( unsigned char *buffer, int count )
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{
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DBG( _DBG_ERROR, "Backend does not support direct I/O!\n" );
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_VAR_NOT_USED( count );
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if( buffer == NULL )
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return -2;
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return -1;
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}
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#endif /* _BACKEND_ENABLED */
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/**
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*/
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static int ppDev_open( const char *dev_name, void *misc )
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{
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int result;
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int handle;
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CompatAdjDef compatAdj;
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PPAdjDef adj;
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unsigned short version = _PTDRV_IOCTL_VERSION;
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Plustek_Device *dev = (Plustek_Device *)misc;
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if( dev->adj.direct_io ) {
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result = PtDrvInit( dev_name, dev->adj.mov );
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if( 0 != result ) {
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DBG( _DBG_ERROR, "open: PtDrvInit failed: %d\n", result );
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return -1;
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}
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}
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if( dev->adj.direct_io )
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handle = PtDrvOpen();
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else
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handle = open( dev_name, O_RDONLY );
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if ( handle < 0 ) {
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DBG( _DBG_ERROR, "open: can't open %s as a device\n", dev_name );
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return handle;
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}
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if( dev->adj.direct_io )
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result = PtDrvIoctl( _PTDRV_OPEN_DEVICE, &version );
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else
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result = ioctl( handle, _PTDRV_OPEN_DEVICE, &version );
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if( result < 0 ) {
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if( -9019 == result ) {
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DBG( _DBG_INFO, "Version 0x%04x not supported, trying "
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"compatibility version 0x%04x\n",
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_PTDRV_IOCTL_VERSION, _PTDRV_COMPAT_IOCTL_VERSION);
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version = _PTDRV_COMPAT_IOCTL_VERSION;
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if( dev->adj.direct_io )
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result = PtDrvIoctl( _PTDRV_OPEN_DEVICE, &version );
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else
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result = ioctl( handle, _PTDRV_OPEN_DEVICE, &version );
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if( result < 0 ) {
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if( dev->adj.direct_io )
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PtDrvClose();
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else
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close( dev->fd );
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DBG( _DBG_ERROR,
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"ioctl PT_DRV_OPEN_DEVICE failed(%d)\n", result );
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if( -9019 == result ) {
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DBG( _DBG_ERROR,
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"Version problem, please recompile driver!\n" );
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}
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} else {
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DBG( _DBG_INFO, "Using compatibility version\n" );
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compatAdj.lampOff = dev->adj.lampOff;
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compatAdj.lampOffOnEnd = dev->adj.lampOffOnEnd;
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compatAdj.warmup = dev->adj.warmup;
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memcpy( &compatAdj.pos, &dev->adj.pos, sizeof(OffsDef));
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memcpy( &compatAdj.neg, &dev->adj.neg, sizeof(OffsDef));
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memcpy( &compatAdj.tpa, &dev->adj.tpa, sizeof(OffsDef));
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if( dev->adj.direct_io )
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PtDrvIoctl( _PTDRV_ADJUST, &compatAdj );
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else
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ioctl( handle, _PTDRV_ADJUST, &compatAdj );
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return handle;
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}
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}
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return result;
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}
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memset( &adj, 0, sizeof(PPAdjDef));
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adj.lampOff = dev->adj.lampOff;
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adj.lampOffOnEnd = dev->adj.lampOffOnEnd;
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adj.warmup = dev->adj.warmup;
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memcpy( &adj.pos, &dev->adj.pos, sizeof(OffsDef));
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memcpy( &adj.neg, &dev->adj.neg, sizeof(OffsDef));
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memcpy( &adj.tpa, &dev->adj.tpa, sizeof(OffsDef));
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adj.rgamma = dev->adj.rgamma;
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adj.ggamma = dev->adj.ggamma;
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adj.bgamma = dev->adj.bgamma;
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adj.graygamma = dev->adj.graygamma;
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if( dev->adj.direct_io )
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PtDrvIoctl( _PTDRV_ADJUST, &adj );
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else
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ioctl( handle, _PTDRV_ADJUST, &adj );
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dev->initialized = SANE_TRUE;
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return handle;
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}
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/**
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*/
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static int ppDev_close( Plustek_Device *dev )
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{
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if( dev->adj.direct_io )
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return PtDrvClose();
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else
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return close( dev->fd );
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}
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/**
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*/
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static int ppDev_getCaps( Plustek_Device *dev )
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{
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if( dev->adj.direct_io )
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return PtDrvIoctl( _PTDRV_GET_CAPABILITIES, &dev->caps );
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else
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return ioctl( dev->fd, _PTDRV_GET_CAPABILITIES, &dev->caps );
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}
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/**
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*/
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static int ppDev_getLensInfo( Plustek_Device *dev, pLensInfo lens )
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{
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if( dev->adj.direct_io )
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return PtDrvIoctl( _PTDRV_GET_LENSINFO, lens );
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else
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return ioctl( dev->fd, _PTDRV_GET_LENSINFO, lens );
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}
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/**
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*/
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static int ppDev_getCropInfo( Plustek_Device *dev, pCropInfo crop )
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{
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if( dev->adj.direct_io )
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return PtDrvIoctl( _PTDRV_GET_CROPINFO, crop );
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else
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return ioctl( dev->fd, _PTDRV_GET_CROPINFO, crop );
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}
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/**
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*/
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static int ppDev_putImgInfo( Plustek_Device *dev, pImgDef img )
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{
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if( dev->adj.direct_io )
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return PtDrvIoctl( _PTDRV_PUT_IMAGEINFO, img );
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else
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return ioctl( dev->fd, _PTDRV_PUT_IMAGEINFO, img );
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}
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/**
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*/
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static int ppDev_setScanEnv( Plustek_Device *dev, pScanInfo sinfo )
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{
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if( dev->adj.direct_io )
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return PtDrvIoctl( _PTDRV_SET_ENV, sinfo );
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else
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return ioctl( dev->fd, _PTDRV_SET_ENV, sinfo );
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}
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/**
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*/
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static int ppDev_startScan( Plustek_Device *dev, pStartScan start )
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{
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if( dev->adj.direct_io )
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return PtDrvIoctl( _PTDRV_START_SCAN, start );
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else
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return ioctl( dev->fd, _PTDRV_START_SCAN, start );
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}
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/** function to send a gamma table to the kernel module. As the default table
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* entry is 16-bit, but the maps are 8-bit, we have to copy the values...
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*/
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static int ppDev_setMap( Plustek_Device *dev, SANE_Word *map,
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SANE_Word length, SANE_Word channel )
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{
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SANE_Byte *buf;
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SANE_Word i;
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MapDef m;
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m.len = length;
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m.map_id = channel;
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m.map = (void *)map;
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DBG(_DBG_INFO,"Setting map[%u] at 0x%08lx\n", channel, (unsigned long)map);
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buf = (SANE_Byte*)malloc( m.len );
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if( !buf )
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return _E_ALLOC;
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for( i = 0; i < m.len; i++ ) {
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buf[i] = (SANE_Byte)map[i];
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if( map[i] > 0xFF )
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buf[i] = 0xFF;
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}
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m.map = buf;
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if( dev->adj.direct_io )
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PtDrvIoctl( _PTDRV_SETMAP, &m );
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else
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ioctl( dev->fd, _PTDRV_SETMAP, &m );
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/* we ignore the return values */
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free( buf );
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return 0;
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}
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/**
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*/
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static int ppDev_stopScan( Plustek_Device *dev, int *mode )
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{
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int retval, tmp;
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/* save this one... */
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tmp = *mode;
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if( dev->adj.direct_io )
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retval = PtDrvIoctl( _PTDRV_STOP_SCAN, mode );
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else
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retval = ioctl( dev->fd, _PTDRV_STOP_SCAN, mode );
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/* ... and use it here */
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if( 0 == tmp ) {
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if( dev->adj.direct_io )
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PtDrvIoctl( _PTDRV_CLOSE_DEVICE, 0 );
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else
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ioctl( dev->fd, _PTDRV_CLOSE_DEVICE, 0);
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}else
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sleep( 1 );
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return retval;
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}
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/**
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*/
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static int ppDev_readImage( Plustek_Device *dev,
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SANE_Byte *buf, unsigned long data_length )
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{
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if( dev->adj.direct_io )
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return PtDrvRead( buf, data_length );
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else
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return read( dev->fd, buf, data_length );
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}
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/* END PLUSTEK-PP_WRAPPER.C .................................................*/
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