/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <cstdarg>
#include <math.h>
#include <osl/file.h>
#include <tools/stream.hxx>
#include <sane.hxx>
#include <dlfcn.h>
#include <stdio.h>
#include <unistd.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sal/config.h>
#include <sal/macros.h>
#include <boost/scoped_array.hpp>
#if (OSL_DEBUG_LEVEL > 1) || defined DBG_UTIL
#include <stdarg.h>
#define dump_state( a, b, c, d ) fprintf( stderr, a, b, c, d );
#else
#define dump_state( a, b, c, d ) ;
#endif
inline void dbg_msg( const char* pString, ... )
{
#if (OSL_DEBUG_LEVEL > 1) || defined DBG_UTIL
va_list ap;
va_start( ap, pString );
vfprintf( stderr, pString, ap );
va_end( ap );
#else
(void)pString;
#endif
}
#define FAIL_SHUTDOWN_STATE( x, y, z ) \
if( x != SANE_STATUS_GOOD ) \
{ \
dump_state( "%s returned error %d (%s)\n", \
y, x, p_strstatus( x ) ); \
DeInit(); \
return z; \
}
#define FAIL_STATE( x, y, z ) \
if( x != SANE_STATUS_GOOD ) \
{ \
dump_state( "%s returned error %d (%s)\n", \
y, x, p_strstatus( x ) ); \
return z; \
}
#define DUMP_STATE( x, y ) \
if( x != SANE_STATUS_GOOD ) \
{ \
dump_state( "%s returned error %d (%s)\n", \
y, x, p_strstatus( x ) ); \
}
int Sane::nRefCount = 0;
oslModule Sane::pSaneLib = 0;
SANE_Int Sane::nVersion = 0;
SANE_Device** Sane::ppDevices = 0;
int Sane::nDevices = 0;
SANE_Status (*Sane::p_init)( SANE_Int*,
SANE_Auth_Callback ) = 0;
void (*Sane::p_exit)() = 0;
SANE_Status (*Sane::p_get_devices)( const SANE_Device***,
SANE_Bool ) = 0;
SANE_Status (*Sane::p_open)( SANE_String_Const, SANE_Handle ) = 0;
void (*Sane::p_close)( SANE_Handle ) = 0;
const SANE_Option_Descriptor* (*Sane::p_get_option_descriptor)(
SANE_Handle, SANE_Int ) = 0;
SANE_Status (*Sane::p_control_option)( SANE_Handle, SANE_Int,
SANE_Action, void*,
SANE_Int* ) = 0;
SANE_Status (*Sane::p_get_parameters)( SANE_Handle,
SANE_Parameters* ) = 0;
SANE_Status (*Sane::p_start)( SANE_Handle ) = 0;
SANE_Status (*Sane::p_read)( SANE_Handle, SANE_Byte*, SANE_Int,
SANE_Int* ) = 0;
void (*Sane::p_cancel)( SANE_Handle ) = 0;
SANE_Status (*Sane::p_set_io_mode)( SANE_Handle, SANE_Bool ) = 0;
SANE_Status (*Sane::p_get_select_fd)( SANE_Handle, SANE_Int* ) = 0;
SANE_String_Const (*Sane::p_strstatus)( SANE_Status ) = 0;
static bool bSaneSymbolLoadFailed = false;
inline oslGenericFunction Sane::LoadSymbol( const char* pSymbolname )
{
oslGenericFunction pFunction = osl_getAsciiFunctionSymbol( pSaneLib, pSymbolname );
if( ! pFunction )
{
fprintf( stderr, "Could not load symbol %s\n",
pSymbolname );
bSaneSymbolLoadFailed = true;
}
return pFunction;
}
SANE_Status Sane::ControlOption( int nOption, SANE_Action nAction,
void* pData )
{
SANE_Int nInfo = 0;
SANE_Status nStatus = p_control_option( maHandle, (SANE_Int)nOption,
nAction, pData, &nInfo );
DUMP_STATE( nStatus, "sane_control_option" );
#if OSL_DEBUG_LEVEL > 1
if( nStatus != SANE_STATUS_GOOD )
{
const char* pAction = "Unknown";
switch( nAction )
{
case SANE_ACTION_GET_VALUE:
pAction = "SANE_ACTION_GET_VALUE";break;
case SANE_ACTION_SET_VALUE:
pAction = "SANE_ACTION_SET_VALUE";break;
case SANE_ACTION_SET_AUTO:
pAction = "SANE_ACTION_SET_AUTO";break;
}
dbg_msg( "Option: \"%s\" action: %s\n",
OUStringToOString(GetOptionName(nOption), osl_getThreadTextEncoding()).getStr(),
pAction );
}
#endif
if( nInfo & SANE_INFO_RELOAD_OPTIONS )
ReloadOptions();
return nStatus;
}
Sane::Sane() :
mppOptions( 0 ),
mnOptions( 0 ),
mnDevice( -1 ),
maHandle( 0 )
{
if( ! nRefCount || ! pSaneLib )
Init();
nRefCount++;
};
Sane::~Sane()
{
if( IsOpen() )
Close();
nRefCount--;
if( ! nRefCount && pSaneLib )
DeInit();
}
void Sane::Init()
{
OUString sSaneLibName( "libsane" SAL_DLLEXTENSION );
pSaneLib = osl_loadModule( sSaneLibName.pData, SAL_LOADMODULE_LAZY );
if( ! pSaneLib )
{
sSaneLibName = "libsane" SAL_DLLEXTENSION ".1";
pSaneLib = osl_loadModule( sSaneLibName.pData, SAL_LOADMODULE_LAZY );
}
// try reasonable places that might not be in the library search path
if( ! pSaneLib )
{
OUString sSaneLibSystemPath( "/usr/local/lib/libsane" SAL_DLLEXTENSION );
osl_getFileURLFromSystemPath( sSaneLibSystemPath.pData, &sSaneLibName.pData );
pSaneLib = osl_loadModule( sSaneLibName.pData, SAL_LOADMODULE_LAZY );
}
if( pSaneLib )
{
bSaneSymbolLoadFailed = false;
p_init = (SANE_Status(*)(SANE_Int*, SANE_Auth_Callback ))
LoadSymbol( "sane_init" );
p_exit = (void(*)())
LoadSymbol( "sane_exit" );
p_get_devices = (SANE_Status(*)(const SANE_Device***,
SANE_Bool ))
LoadSymbol( "sane_get_devices" );
p_open = (SANE_Status(*)(SANE_String_Const, SANE_Handle ))
LoadSymbol( "sane_open" );
p_close = (void(*)(SANE_Handle))
LoadSymbol( "sane_close" );
p_get_option_descriptor = (const SANE_Option_Descriptor*(*)(SANE_Handle,
SANE_Int))
LoadSymbol( "sane_get_option_descriptor" );
p_control_option = (SANE_Status(*)(SANE_Handle, SANE_Int,
SANE_Action, void*, SANE_Int*))
LoadSymbol( "sane_control_option" );
p_get_parameters = (SANE_Status(*)(SANE_Handle,SANE_Parameters*))
LoadSymbol( "sane_get_parameters" );
p_start = (SANE_Status(*)(SANE_Handle))
LoadSymbol( "sane_start" );
p_read = (SANE_Status(*)(SANE_Handle, SANE_Byte*,
SANE_Int, SANE_Int* ))
LoadSymbol( "sane_read" );
p_cancel = (void(*)(SANE_Handle))
LoadSymbol( "sane_cancel" );
p_set_io_mode = (SANE_Status(*)(SANE_Handle, SANE_Bool))
LoadSymbol( "sane_set_io_mode" );
p_get_select_fd = (SANE_Status(*)(SANE_Handle, SANE_Int*))
LoadSymbol( "sane_get_select_fd" );
p_strstatus = (SANE_String_Const(*)(SANE_Status))
LoadSymbol( "sane_strstatus" );
if( bSaneSymbolLoadFailed )
DeInit();
else
{
SANE_Status nStatus = p_init( &nVersion, 0 );
FAIL_SHUTDOWN_STATE( nStatus, "sane_init", );
nStatus = p_get_devices( (const SANE_Device***)&ppDevices,
SANE_FALSE );
FAIL_SHUTDOWN_STATE( nStatus, "sane_get_devices", );
for( nDevices = 0 ; ppDevices[ nDevices ]; nDevices++ ) ;
}
}
#if (OSL_DEBUG_LEVEL > 1) || defined DBG_UTIL
else
fprintf( stderr, "libsane%s could not be opened: %s\n", SAL_DLLEXTENSION,
dlerror() );
#endif
}
void Sane::DeInit()
{
if( pSaneLib )
{
p_exit();
osl_unloadModule( pSaneLib );
pSaneLib = 0;
}
}
void Sane::ReloadDevices()
{
if( IsOpen() )
Close();
DeInit();
Init();
}
void Sane::ReloadOptions()
{
if( ! IsOpen() )
return;
const SANE_Option_Descriptor* pZero = p_get_option_descriptor( maHandle, 0 );
SANE_Word pOptions[2];
SANE_Status nStatus = p_control_option( maHandle, 0, SANE_ACTION_GET_VALUE,
(void*)pOptions, NULL );
if( nStatus != SANE_STATUS_GOOD )
fprintf( stderr, "Error: sane driver returned %s while reading number of options !\n", p_strstatus( nStatus ) );
mnOptions = pOptions[ 0 ];
if( (size_t)pZero->size > sizeof( SANE_Word ) )
fprintf( stderr, "driver returned numer of options with larger size tha SANE_Word !!!\n" );
if( mppOptions )
delete [] mppOptions;
mppOptions = new const SANE_Option_Descriptor*[ mnOptions ];
mppOptions[ 0 ] = pZero;
for( int i = 1; i < mnOptions; i++ )
mppOptions[ i ] = (SANE_Option_Descriptor*)
p_get_option_descriptor( maHandle, i );
CheckConsistency( NULL, true );
maReloadOptionsLink.Call( this );
}
bool Sane::Open( const char* name )
{
SANE_Status nStatus = p_open( (SANE_String_Const)name, &maHandle );
FAIL_STATE( nStatus, "sane_open", false );
ReloadOptions();
if( mnDevice == -1 )
{
OString aDevice( name );
for( int i = 0; i < nDevices; i++ )
{
if( aDevice.equals( ppDevices[i]->name ) )
{
mnDevice = i;
break;
}
}
}
return true;
}
bool Sane::Open( int n )
{
if( n >= 0 && n < nDevices )
{
mnDevice = n;
return Open( (char*)ppDevices[n]->name );
}
return false;
}
void Sane::Close()
{
if( maHandle )
{
p_close( maHandle );
delete [] mppOptions;
mppOptions = 0;
maHandle = 0;
mnDevice = -1;
}
}
int Sane::GetOptionByName( const char* rName )
{
int i;
OString aOption( rName );
for( i = 0; i < mnOptions; i++ )
{
if( mppOptions[i]->name && aOption.equals( mppOptions[i]->name ) )
return i;
}
return -1;
}
bool Sane::GetOptionValue( int n, bool& rRet )
{
if( ! maHandle || mppOptions[n]->type != SANE_TYPE_BOOL )
return false;
SANE_Word nRet;
SANE_Status nStatus = ControlOption( n, SANE_ACTION_GET_VALUE, &nRet );
if( nStatus != SANE_STATUS_GOOD )
return false;
rRet = nRet;
return true;
}
bool Sane::GetOptionValue( int n, OString& rRet )
{
bool bSuccess = false;
if( ! maHandle || mppOptions[n]->type != SANE_TYPE_STRING )
return false;
boost::scoped_array<char> pRet(new char[mppOptions[n]->size+1]);
SANE_Status nStatus = ControlOption( n, SANE_ACTION_GET_VALUE, pRet.get() );
if( nStatus == SANE_STATUS_GOOD )
{
bSuccess = true;
rRet = pRet.get();
}
return bSuccess;
}
bool Sane::GetOptionValue( int n, double& rRet, int nElement )
{
bool bSuccess = false;
if( ! maHandle || ( mppOptions[n]->type != SANE_TYPE_INT &&
mppOptions[n]->type != SANE_TYPE_FIXED ) )
return false;
boost::scoped_array<SANE_Word> pRet(new SANE_Word[mppOptions[n]->size/sizeof(SANE_Word)]);
SANE_Status nStatus = ControlOption( n, SANE_ACTION_GET_VALUE, pRet.get() );
if( nStatus == SANE_STATUS_GOOD )
{
bSuccess = true;
if( mppOptions[n]->type == SANE_TYPE_INT )
rRet = (double)pRet[ nElement ];
else
rRet = SANE_UNFIX( pRet[nElement] );
}
return bSuccess;
}
bool Sane::GetOptionValue( int n, double* pSet )
{
if( ! maHandle || ! ( mppOptions[n]->type == SANE_TYPE_FIXED ||
mppOptions[n]->type == SANE_TYPE_INT ) )
return false;
boost::scoped_array<SANE_Word> pFixedSet(new SANE_Word[mppOptions[n]->size/sizeof(SANE_Word)]);
SANE_Status nStatus = ControlOption( n, SANE_ACTION_GET_VALUE, pFixedSet.get() );
if( nStatus != SANE_STATUS_GOOD )
return false;
for( size_t i = 0; i <mppOptions[n]->size/sizeof(SANE_Word); i++ )
{
if( mppOptions[n]->type == SANE_TYPE_FIXED )
pSet[i] = SANE_UNFIX( pFixedSet[i] );
else
pSet[i] = (double) pFixedSet[i];
}
return true;
}
bool Sane::SetOptionValue( int n, bool bSet )
{
if( ! maHandle || mppOptions[n]->type != SANE_TYPE_BOOL )
return false;
SANE_Word nRet = bSet ? SANE_TRUE : SANE_FALSE;
SANE_Status nStatus = ControlOption( n, SANE_ACTION_SET_VALUE, &nRet );
if( nStatus != SANE_STATUS_GOOD )
return false;
return true;
}
bool Sane::SetOptionValue( int n, const OUString& rSet )
{
if( ! maHandle || mppOptions[n]->type != SANE_TYPE_STRING )
return false;
OString aSet(OUStringToOString(rSet, osl_getThreadTextEncoding()));
SANE_Status nStatus = ControlOption( n, SANE_ACTION_SET_VALUE, (void*)aSet.getStr() );
if( nStatus != SANE_STATUS_GOOD )
return false;
return true;
}
bool Sane::SetOptionValue( int n, double fSet, int nElement )
{
bool bSuccess = false;
if( ! maHandle || ( mppOptions[n]->type != SANE_TYPE_INT &&
mppOptions[n]->type != SANE_TYPE_FIXED ) )
return false;
SANE_Status nStatus;
if( mppOptions[n]->size/sizeof(SANE_Word) > 1 )
{
boost::scoped_array<SANE_Word> pSet(new SANE_Word[mppOptions[n]->size/sizeof(SANE_Word)]);
nStatus = ControlOption( n, SANE_ACTION_GET_VALUE, pSet.get() );
if( nStatus == SANE_STATUS_GOOD )
{
pSet[nElement] = mppOptions[n]->type == SANE_TYPE_INT ?
(SANE_Word)fSet : SANE_FIX( fSet );
nStatus = ControlOption( n, SANE_ACTION_SET_VALUE, pSet.get() );
}
}
else
{
SANE_Word nSetTo =
mppOptions[n]->type == SANE_TYPE_INT ?
(SANE_Word)fSet : SANE_FIX( fSet );
nStatus = ControlOption( n, SANE_ACTION_SET_VALUE, &nSetTo );
if( nStatus == SANE_STATUS_GOOD )
bSuccess = true;
}
return bSuccess;
}
bool Sane::SetOptionValue( int n, double* pSet )
{
if( ! maHandle || ( mppOptions[n]->type != SANE_TYPE_INT &&
mppOptions[n]->type != SANE_TYPE_FIXED ) )
return false;
boost::scoped_array<SANE_Word> pFixedSet(new SANE_Word[mppOptions[n]->size/sizeof(SANE_Word)]);
for( size_t i = 0; i < mppOptions[n]->size/sizeof(SANE_Word); i++ )
{
if( mppOptions[n]->type == SANE_TYPE_FIXED )
pFixedSet[i] = SANE_FIX( pSet[i] );
else
pFixedSet[i] = (SANE_Word)pSet[i];
}
SANE_Status nStatus = ControlOption( n, SANE_ACTION_SET_VALUE, pFixedSet.get() );
if( nStatus != SANE_STATUS_GOOD )
return false;
return true;
}
enum FrameStyleType {
FrameStyle_BW, FrameStyle_Gray, FrameStyle_RGB, FrameStyle_Separated
};
#define BYTE_BUFFER_SIZE 32768
static inline sal_uInt8 _ReadValue( FILE* fp, int depth )
{
if( depth == 16 )
{
sal_uInt16 nWord;
// data always come in native byte order !
// 16 bits is not really supported by backends as of now
// e.g. UMAX Astra 1200S delivers 16 bit but in BIGENDIAN
// against SANE documentation (xscanimage gets the same result
// as we do
size_t items_read = fread( &nWord, 1, 2, fp );
if (items_read != 2)
{
SAL_WARN( "extensions.scanner", "short read, abandoning" );
return 0;
}
return (sal_uInt8)( nWord / 256 );
}
sal_uInt8 nByte;
size_t items_read = fread( &nByte, 1, 1, fp );
if (items_read != 1)
{
SAL_WARN( "extensions.scanner", "short read, abandoning" );
return 0;
}
return nByte;
}
bool Sane::CheckConsistency( const char* pMes, bool bInit )
{
static const SANE_Option_Descriptor** pDescArray = NULL;
static const SANE_Option_Descriptor* pZero = NULL;
if( bInit )
{
pDescArray = mppOptions;
if( mppOptions )
pZero = mppOptions[0];
return true;
}
bool bConsistent = true;
if( pDescArray != mppOptions )
bConsistent = false;
if( pZero != mppOptions[0] )
bConsistent = false;
if( ! bConsistent )
dbg_msg( "Sane is not consistent. (%s)\n", pMes );
return bConsistent;
}
bool Sane::Start( BitmapTransporter& rBitmap )
{
int nStream = 0, nLine = 0, i = 0;
SANE_Parameters aParams;
FrameStyleType eType = FrameStyle_Gray;
bool bSuccess = true;
bool bWidthSet = false;
if( ! maHandle )
return false;
int nWidthMM = 0;
int nHeightMM = 0;
double fTLx, fTLy, fBRx, fBRy, fResl = 0.0;
int nOption;
if( ( nOption = GetOptionByName( "tl-x" ) ) != -1 &&
GetOptionValue( nOption, fTLx, 0 ) &&
GetOptionUnit( nOption ) == SANE_UNIT_MM )
{
if( ( nOption = GetOptionByName( "br-x" ) ) != -1 &&
GetOptionValue( nOption, fBRx, 0 ) &&
GetOptionUnit( nOption ) == SANE_UNIT_MM )
{
nWidthMM = (int)fabs(fBRx - fTLx);
}
}
if( ( nOption = GetOptionByName( "tl-y" ) ) != -1 &&
GetOptionValue( nOption, fTLy, 0 ) &&
GetOptionUnit( nOption ) == SANE_UNIT_MM )
{
if( ( nOption = GetOptionByName( "br-y" ) ) != -1 &&
GetOptionValue( nOption, fBRy, 0 ) &&
GetOptionUnit( nOption ) == SANE_UNIT_MM )
{
nHeightMM = (int)fabs(fBRy - fTLy);
}
}
if( ( nOption = GetOptionByName( "resolution" ) ) != -1 )
GetOptionValue( nOption, fResl );
sal_uInt8* pBuffer = NULL;
SANE_Status nStatus = SANE_STATUS_GOOD;
rBitmap.lock();
SvMemoryStream& aConverter = rBitmap.getStream();
aConverter.Seek( 0 );
aConverter.SetNumberFormatInt( NUMBERFORMAT_INT_LITTLEENDIAN );
// write bitmap stream header
aConverter.WriteChar( 'B' ).WriteChar( 'M' );
aConverter.WriteUInt32( (sal_uInt32) 0 );
aConverter.WriteUInt32( (sal_uInt32) 0 );
aConverter.WriteUInt32( (sal_uInt32) 60 );
// write BITMAPINFOHEADER
aConverter.WriteUInt32( (sal_uInt32)40 );
aConverter.WriteUInt32( (sal_uInt32)0 ); // fill in width later
aConverter.WriteUInt32( (sal_uInt32)0 ); // fill in height later
aConverter.WriteUInt16( (sal_uInt16)1 );
// create header for 24 bits
// correct later if necessary
aConverter.WriteUInt16( (sal_uInt16)24 );
aConverter.WriteUInt32( (sal_uInt32)0 );
aConverter.WriteUInt32( (sal_uInt32)0 );
aConverter.WriteUInt32( (sal_uInt32)0 );
aConverter.WriteUInt32( (sal_uInt32)0 );
aConverter.WriteUInt32( (sal_uInt32)0 );
aConverter.WriteUInt32( (sal_uInt32)0 );
for( nStream=0; nStream < 3 && bSuccess ; nStream++ )
{
nStatus = p_start( maHandle );
DUMP_STATE( nStatus, "sane_start" );
CheckConsistency( "sane_start" );
if( nStatus == SANE_STATUS_GOOD )
{
nStatus = p_get_parameters( maHandle, &aParams );
DUMP_STATE( nStatus, "sane_get_parameters" );
CheckConsistency( "sane_get_parameters" );
if (nStatus != SANE_STATUS_GOOD || aParams.bytes_per_line == 0)
{
bSuccess = false;
break;
}
#if (OSL_DEBUG_LEVEL > 1) || defined DBG_UTIL
const char* ppFormats[] = { "SANE_FRAME_GRAY", "SANE_FRAME_RGB",
"SANE_FRAME_RED", "SANE_FRAME_GREEN",
"SANE_FRAME_BLUE", "Unknown !!!" };
fprintf( stderr, "Parameters for frame %d:\n", nStream );
if( aParams.format < 0 || aParams.format > 4 )
aParams.format = (SANE_Frame)5;
fprintf( stderr, "format: %s\n", ppFormats[ (int)aParams.format ] );
fprintf( stderr, "last_frame: %s\n", aParams.last_frame ? "TRUE" : "FALSE" );
fprintf( stderr, "depth: %d\n", (int)aParams.depth );
fprintf( stderr, "pixels_per_line: %d\n", (int)aParams.pixels_per_line );
fprintf( stderr, "bytes_per_line: %d\n", (int)aParams.bytes_per_line );
#endif
if( ! pBuffer )
{
pBuffer = new sal_uInt8[ BYTE_BUFFER_SIZE < 4*aParams.bytes_per_line ? 4*aParams.bytes_per_line : BYTE_BUFFER_SIZE ];
}
if( aParams.last_frame )
nStream=3;
switch( aParams.format )
{
case SANE_FRAME_GRAY:
eType = FrameStyle_Gray;
if( aParams.depth == 1 )
eType = FrameStyle_BW;
break;
case SANE_FRAME_RGB:
eType = FrameStyle_RGB;
break;
case SANE_FRAME_RED:
case SANE_FRAME_GREEN:
case SANE_FRAME_BLUE:
eType = FrameStyle_Separated;
break;
default:
fprintf( stderr, "Warning: unknown frame style !!!\n" );
}
bool bSynchronousRead = true;
// should be fail safe, but ... ??
nStatus = p_set_io_mode( maHandle, SANE_FALSE );
CheckConsistency( "sane_set_io_mode" );
if( nStatus != SANE_STATUS_GOOD )
{
bSynchronousRead = false;
nStatus = p_set_io_mode( maHandle, SANE_TRUE );
CheckConsistency( "sane_set_io_mode" );
#if (OSL_DEBUG_LEVEL > 1) || defined DBG_UTIL
if( nStatus != SANE_STATUS_GOOD )
// what ?!?
fprintf( stderr, "Sane::Start: driver is confused\n" );
#endif
}
SANE_Int nLen=0;
SANE_Int fd = 0;
if( ! bSynchronousRead )
{
nStatus = p_get_select_fd( maHandle, &fd );
DUMP_STATE( nStatus, "sane_get_select_fd" );
CheckConsistency( "sane_get_select_fd" );
if( nStatus != SANE_STATUS_GOOD )
bSynchronousRead = true;
}
FILE* pFrame = tmpfile();
if( ! pFrame )
{
bSuccess = false;
break;
}
do {
if( ! bSynchronousRead )
{
fd_set fdset;
struct timeval tv;
FD_ZERO( &fdset );
FD_SET( (int)fd, &fdset );
tv.tv_sec = 5;
tv.tv_usec = 0;
if( select( fd+1, &fdset, NULL, NULL, &tv ) == 0 )
fprintf( stderr, "Timout on sane_read descriptor\n" );
}
nLen = 0;
nStatus = p_read( maHandle, pBuffer, BYTE_BUFFER_SIZE, &nLen );
CheckConsistency( "sane_read" );
if( nLen && ( nStatus == SANE_STATUS_GOOD ||
nStatus == SANE_STATUS_EOF ) )
{
bSuccess = (static_cast<size_t>(nLen) == fwrite( pBuffer, 1, nLen, pFrame ));
if (!bSuccess)
break;
}
else
DUMP_STATE( nStatus, "sane_read" );
} while( nStatus == SANE_STATUS_GOOD );
if (nStatus != SANE_STATUS_EOF || !bSuccess)
{
fclose( pFrame );
bSuccess = false;
break;
}
int nFrameLength = ftell( pFrame );
fseek( pFrame, 0, SEEK_SET );
sal_uInt32 nWidth = (sal_uInt32) aParams.pixels_per_line;
sal_uInt32 nHeight = (sal_uInt32) (nFrameLength / aParams.bytes_per_line);
if( ! bWidthSet )
{
if( ! fResl )
fResl = 300; // if all else fails that's a good guess
if( ! nWidthMM )
nWidthMM = (int)(((double)nWidth / fResl) * 25.4);
if( ! nHeightMM )
nHeightMM = (int)(((double)nHeight / fResl) * 25.4);
#if OSL_DEBUG_LEVEL > 1
fprintf( stderr, "set dimensions to (%d, %d) Pixel, (%d, %d) mm, resolution is %lg\n", (int)nWidth, (int)nHeight, (int)nWidthMM, (int)nHeightMM, fResl );
#endif
aConverter.Seek( 18 );
aConverter.WriteUInt32( (sal_uInt32)nWidth );
aConverter.WriteUInt32( (sal_uInt32)nHeight );
aConverter.Seek( 38 );
aConverter.WriteUInt32( (sal_uInt32)(1000*nWidth/nWidthMM) );
aConverter.WriteUInt32( (sal_uInt32)(1000*nHeight/nHeightMM) );
bWidthSet = true;
}
aConverter.Seek(60);
if( eType == FrameStyle_BW )
{
aConverter.Seek( 10 );
aConverter.WriteUInt32( (sal_uInt32)64 );
aConverter.Seek( 28 );
aConverter.WriteUInt16( (sal_uInt16) 1 );
aConverter.Seek( 54 );
// write color table
aConverter.WriteUInt16( (sal_uInt16)0xffff );
aConverter.WriteUChar( (sal_uInt8)0xff );
aConverter.WriteUChar( (sal_uInt8)0 );
aConverter.WriteUInt32( (sal_uInt32)0 );
aConverter.Seek( 64 );
}
else if( eType == FrameStyle_Gray )
{
aConverter.Seek( 10 );
aConverter.WriteUInt32( (sal_uInt32)1084 );
aConverter.Seek( 28 );
aConverter.WriteUInt16( (sal_uInt16) 8 );
aConverter.Seek( 54 );
// write color table
for( nLine = 0; nLine < 256; nLine++ )
{
aConverter.WriteUChar( (sal_uInt8)nLine );
aConverter.WriteUChar( (sal_uInt8)nLine );
aConverter.WriteUChar( (sal_uInt8)nLine );
aConverter.WriteUChar( (sal_uInt8)0 );
}
aConverter.Seek( 1084 );
}
for (nLine = nHeight-1; nLine >= 0; --nLine)
{
fseek( pFrame, nLine * aParams.bytes_per_line, SEEK_SET );
if( eType == FrameStyle_BW ||
( eType == FrameStyle_Gray && aParams.depth == 8 )
)
{
SANE_Int items_read = fread( pBuffer, 1, aParams.bytes_per_line, pFrame );
if (items_read != aParams.bytes_per_line)
{
SAL_WARN( "extensions.scanner", "short read, padding with zeros" );
memset(pBuffer + items_read, 0, aParams.bytes_per_line - items_read);
}
aConverter.Write( pBuffer, aParams.bytes_per_line );
}
else if( eType == FrameStyle_Gray )
{
for( i = 0; i < (aParams.pixels_per_line); i++ )
{
sal_uInt8 nGray = _ReadValue( pFrame, aParams.depth );
aConverter.WriteUChar( nGray );
}
}
else if( eType == FrameStyle_RGB )
{
for( i = 0; i < (aParams.pixels_per_line); i++ )
{
sal_uInt8 nRed, nGreen, nBlue;
nRed = _ReadValue( pFrame, aParams.depth );
nGreen = _ReadValue( pFrame, aParams.depth );
nBlue = _ReadValue( pFrame, aParams.depth );
aConverter.WriteUChar( nBlue );
aConverter.WriteUChar( nGreen );
aConverter.WriteUChar( nRed );
}
}
else if( eType == FrameStyle_Separated )
{
for( i = 0; i < (aParams.pixels_per_line); i++ )
{
sal_uInt8 nValue = _ReadValue( pFrame, aParams.depth );
switch( aParams.format )
{
case SANE_FRAME_RED:
aConverter.SeekRel( 2 );
aConverter.WriteUChar( nValue );
break;
case SANE_FRAME_GREEN:
aConverter.SeekRel( 1 );
aConverter.WriteUChar( nValue );
aConverter.SeekRel( 1 );
break;
case SANE_FRAME_BLUE:
aConverter.WriteUChar( nValue );
aConverter.SeekRel( 2 );
break;
case SANE_FRAME_GRAY:
case SANE_FRAME_RGB:
break;
}
}
}
int nGap = aConverter.Tell() & 3;
if( nGap )
aConverter.SeekRel( 4-nGap );
}
fclose( pFrame ); // deletes tmpfile
if( eType != FrameStyle_Separated )
break;
}
else
bSuccess = false;
}
// get stream length
aConverter.Seek( STREAM_SEEK_TO_END );
int nPos = aConverter.Tell();
aConverter.Seek( 2 );
aConverter.WriteUInt32( (sal_uInt32) nPos+1 );
aConverter.Seek( 0 );
rBitmap.unlock();
if( bSuccess )
{
// only cancel a successful operation
// sane disrupts memory else
p_cancel( maHandle );
CheckConsistency( "sane_cancel" );
}
if( pBuffer )
delete [] pBuffer;
ReloadOptions();
dbg_msg( "Sane::Start returns with %s\n", bSuccess ? "TRUE" : "FALSE" );
return bSuccess;
}
int Sane::GetRange( int n, double*& rpDouble )
{
if( mppOptions[n]->constraint_type != SANE_CONSTRAINT_RANGE &&
mppOptions[n]->constraint_type != SANE_CONSTRAINT_WORD_LIST )
{
return -1;
}
rpDouble = 0;
int nItems, i;
bool bIsFixed = mppOptions[n]->type == SANE_TYPE_FIXED ? sal_True : sal_False;
dbg_msg( "Sane::GetRange of option %s ", mppOptions[n]->name );
if(mppOptions[n]->constraint_type == SANE_CONSTRAINT_RANGE )
{
double fMin, fMax, fQuant;
if( bIsFixed )
{
fMin = SANE_UNFIX( mppOptions[n]->constraint.range->min );
fMax = SANE_UNFIX( mppOptions[n]->constraint.range->max );
fQuant = SANE_UNFIX( mppOptions[n]->constraint.range->quant );
}
else
{
fMin = (double)mppOptions[n]->constraint.range->min;
fMax = (double)mppOptions[n]->constraint.range->max;
fQuant = (double)mppOptions[n]->constraint.range->quant;
}
if( fQuant != 0.0 )
{
dbg_msg( "quantum range [ %lg ; %lg ; %lg ]\n",
fMin, fQuant, fMax );
nItems = (int)((fMax - fMin)/fQuant)+1;
rpDouble = new double[ nItems ];
double fValue = fMin;
for( i = 0; i < nItems; i++, fValue += fQuant )
rpDouble[i] = fValue;
rpDouble[ nItems-1 ] = fMax;
return nItems;
}
else
{
dbg_msg( "normal range [ %lg %lg ]\n",
fMin, fMax );
rpDouble = new double[2];
rpDouble[0] = fMin;
rpDouble[1] = fMax;
return 0;
}
}
else
{
nItems = mppOptions[n]->constraint.word_list[0];
rpDouble = new double[nItems];
for( i=0; i<nItems; i++ )
{
rpDouble[i] = bIsFixed ?
SANE_UNFIX( mppOptions[n]->constraint.word_list[i+1] ) :
(double)mppOptions[n]->constraint.word_list[i+1];
}
dbg_msg( "wordlist [ %lg ... %lg ]\n",
rpDouble[ 0 ], rpDouble[ nItems-1 ] );
return nItems;
}
}
static const char *ppUnits[] = {
"",
"[Pixel]",
"[Bit]",
"[mm]",
"[DPI]",
"[%]",
"[usec]"
};
OUString Sane::GetOptionUnitName( int n )
{
OUString aText;
SANE_Unit nUnit = mppOptions[n]->unit;
size_t nUnitAsSize = (size_t)nUnit;
if (nUnitAsSize >= SAL_N_ELEMENTS( ppUnits ))
aText = "[unknown units]";
else
aText = OUString( ppUnits[ nUnit ], strlen(ppUnits[ nUnit ]), osl_getThreadTextEncoding() );
return aText;
}
bool Sane::ActivateButtonOption( int n )
{
SANE_Status nStatus = ControlOption( n, SANE_ACTION_SET_VALUE, NULL );
if( nStatus != SANE_STATUS_GOOD )
return false;
return true;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */