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-rw-r--r--extensions/source/scanner/sane.cxx993
1 files changed, 993 insertions, 0 deletions
diff --git a/extensions/source/scanner/sane.cxx b/extensions/source/scanner/sane.cxx
new file mode 100644
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+++ b/extensions/source/scanner/sane.cxx
@@ -0,0 +1,993 @@
+/* -*- 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 <type_traits>
+#include <math.h>
+
+#include <o3tl/safeint.hxx>
+#include <osl/file.h>
+#include <sal/log.hxx>
+#include <tools/stream.hxx>
+#include <unotools/tempfile.hxx>
+#include "sane.hxx"
+#include <dlfcn.h>
+#include <stdio.h>
+#include <sys/time.h>
+#include <sal/config.h>
+#include <sal/macros.h>
+#include <memory>
+
+#if (OSL_DEBUG_LEVEL > 0) || 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
+static void dbg_msg( const char* pString, ... )
+{
+#if (OSL_DEBUG_LEVEL > 0) || 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 = nullptr;
+SANE_Int Sane::nVersion = 0;
+SANE_Device** Sane::ppDevices = nullptr;
+int Sane::nDevices = 0;
+
+SANE_Status (*Sane::p_init)( SANE_Int*,
+ SANE_Auth_Callback ) = nullptr;
+void (*Sane::p_exit)() = nullptr;
+SANE_Status (*Sane::p_get_devices)( const SANE_Device***,
+ SANE_Bool ) = nullptr;
+SANE_Status (*Sane::p_open)( SANE_String_Const, SANE_Handle ) = nullptr;
+void (*Sane::p_close)( SANE_Handle ) = nullptr;
+const SANE_Option_Descriptor* (*Sane::p_get_option_descriptor)(
+ SANE_Handle, SANE_Int ) = nullptr;
+SANE_Status (*Sane::p_control_option)( SANE_Handle, SANE_Int,
+ SANE_Action, void*,
+ SANE_Int* ) = nullptr;
+SANE_Status (*Sane::p_get_parameters)( SANE_Handle,
+ SANE_Parameters* ) = nullptr;
+SANE_Status (*Sane::p_start)( SANE_Handle ) = nullptr;
+SANE_Status (*Sane::p_read)( SANE_Handle, SANE_Byte*, SANE_Int,
+ SANE_Int* ) = nullptr;
+void (*Sane::p_cancel)( SANE_Handle ) = nullptr;
+SANE_Status (*Sane::p_set_io_mode)( SANE_Handle, SANE_Bool ) = nullptr;
+SANE_Status (*Sane::p_get_select_fd)( SANE_Handle, SANE_Int* ) = nullptr;
+SANE_String_Const (*Sane::p_strstatus)( SANE_Status ) = nullptr;
+
+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, static_cast<SANE_Int>(nOption),
+ nAction, pData, &nInfo );
+ DUMP_STATE( nStatus, "sane_control_option" );
+#if OSL_DEBUG_LEVEL > 0
+ 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() :
+ mnOptions( 0 ),
+ mnDevice( -1 ),
+ maHandle( nullptr )
+{
+ 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 = reinterpret_cast<SANE_Status(*)(SANE_Int*, SANE_Auth_Callback )>(
+ LoadSymbol( "sane_init" ));
+ p_exit = reinterpret_cast<void(*)()>(
+ LoadSymbol( "sane_exit" ));
+ p_get_devices = reinterpret_cast<SANE_Status(*)(const SANE_Device***,
+ SANE_Bool )>(
+ LoadSymbol( "sane_get_devices" ));
+ p_open = reinterpret_cast<SANE_Status(*)(SANE_String_Const, SANE_Handle )>(
+ LoadSymbol( "sane_open" ));
+ p_close = reinterpret_cast<void(*)(SANE_Handle)>(
+ LoadSymbol( "sane_close" ));
+ p_get_option_descriptor = reinterpret_cast<const SANE_Option_Descriptor*(*)(SANE_Handle,
+ SANE_Int)>(
+ LoadSymbol( "sane_get_option_descriptor" ));
+ p_control_option = reinterpret_cast<SANE_Status(*)(SANE_Handle, SANE_Int,
+ SANE_Action, void*, SANE_Int*)>(
+ LoadSymbol( "sane_control_option" ));
+ p_get_parameters = reinterpret_cast<SANE_Status(*)(SANE_Handle,SANE_Parameters*)>(
+ LoadSymbol( "sane_get_parameters" ));
+ p_start = reinterpret_cast<SANE_Status(*)(SANE_Handle)>(
+ LoadSymbol( "sane_start" ));
+ p_read = reinterpret_cast<SANE_Status(*)(SANE_Handle, SANE_Byte*,
+ SANE_Int, SANE_Int* )>(
+ LoadSymbol( "sane_read" ));
+ p_cancel = reinterpret_cast<void(*)(SANE_Handle)>(
+ LoadSymbol( "sane_cancel" ));
+ p_set_io_mode = reinterpret_cast<SANE_Status(*)(SANE_Handle, SANE_Bool)>(
+ LoadSymbol( "sane_set_io_mode" ));
+ p_get_select_fd = reinterpret_cast<SANE_Status(*)(SANE_Handle, SANE_Int*)>(
+ LoadSymbol( "sane_get_select_fd" ));
+ p_strstatus = reinterpret_cast<SANE_String_Const(*)(SANE_Status)>(
+ LoadSymbol( "sane_strstatus" ));
+ if( bSaneSymbolLoadFailed )
+ DeInit();
+ else
+ {
+ SANE_Status nStatus = p_init( &nVersion, nullptr );
+ FAIL_SHUTDOWN_STATE( nStatus, "sane_init", );
+ nStatus = p_get_devices( const_cast<const SANE_Device***>(&ppDevices),
+ SANE_FALSE );
+ FAIL_SHUTDOWN_STATE( nStatus, "sane_get_devices", );
+ for( nDevices = 0 ; ppDevices[ nDevices ]; nDevices++ ) ;
+ }
+ }
+#if (OSL_DEBUG_LEVEL > 0) || 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 = nullptr;
+ }
+}
+
+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,
+ static_cast<void*>(pOptions), nullptr );
+ 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( o3tl::make_unsigned(pZero->size) > sizeof( SANE_Word ) )
+ fprintf( stderr, "driver returned number of options with larger size than SANE_Word!!!\n" );
+ mppOptions.reset(new const SANE_Option_Descriptor*[ mnOptions ]);
+ mppOptions[ 0 ] = pZero;
+ for( int i = 1; i < mnOptions; i++ )
+ mppOptions[ i ] = p_get_option_descriptor( maHandle, i );
+
+ CheckConsistency( nullptr, true );
+
+ maReloadOptionsLink.Call( *this );
+}
+
+bool Sane::Open( const char* name )
+{
+ SANE_Status nStatus = p_open( reinterpret_cast<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 == ppDevices[i]->name )
+ {
+ mnDevice = i;
+ break;
+ }
+ }
+ }
+
+ return true;
+}
+
+bool Sane::Open( int n )
+{
+ if( n >= 0 && n < nDevices )
+ {
+ mnDevice = n;
+ return Open( ppDevices[n]->name );
+ }
+ return false;
+}
+
+void Sane::Close()
+{
+ if( maHandle )
+ {
+ p_close( maHandle );
+ mppOptions.reset();
+ maHandle = nullptr;
+ mnDevice = -1;
+ }
+}
+
+int Sane::GetOptionByName( const char* rName )
+{
+ int i;
+ OString aOption( rName );
+ for( i = 0; i < mnOptions; i++ )
+ {
+ if( mppOptions[i]->name && aOption == 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;
+ std::unique_ptr<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;
+
+ std::unique_ptr<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 = static_cast<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;
+
+ std::unique_ptr<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] = static_cast<double>(pFixedSet[i]);
+ }
+ return true;
+}
+
+void Sane::SetOptionValue( int n, bool bSet )
+{
+ if( ! maHandle || mppOptions[n]->type != SANE_TYPE_BOOL )
+ return;
+ SANE_Word nRet = bSet ? SANE_TRUE : SANE_FALSE;
+ ControlOption( n, SANE_ACTION_SET_VALUE, &nRet );
+}
+
+void Sane::SetOptionValue( int n, const OUString& rSet )
+{
+ if( ! maHandle || mppOptions[n]->type != SANE_TYPE_STRING )
+ return;
+ OString aSet(OUStringToOString(rSet, osl_getThreadTextEncoding()));
+ ControlOption( n, SANE_ACTION_SET_VALUE, const_cast<char *>(aSet.getStr()) );
+}
+
+void Sane::SetOptionValue( int n, double fSet, int nElement )
+{
+ if( ! maHandle || ( mppOptions[n]->type != SANE_TYPE_INT &&
+ mppOptions[n]->type != SANE_TYPE_FIXED ) )
+ return;
+
+ if( mppOptions[n]->size/sizeof(SANE_Word) > 1 )
+ {
+ std::unique_ptr<SANE_Word[]> pSet(new SANE_Word[mppOptions[n]->size/sizeof(SANE_Word)]);
+ SANE_Status nStatus = ControlOption( n, SANE_ACTION_GET_VALUE, pSet.get() );
+ if( nStatus == SANE_STATUS_GOOD )
+ {
+ pSet[nElement] = mppOptions[n]->type == SANE_TYPE_INT ?
+ static_cast<SANE_Word>(fSet) : SANE_FIX( fSet );
+ ControlOption( n, SANE_ACTION_SET_VALUE, pSet.get() );
+ }
+ }
+ else
+ {
+ SANE_Word nSetTo =
+ mppOptions[n]->type == SANE_TYPE_INT ?
+ static_cast<SANE_Word>(fSet) : SANE_FIX( fSet );
+
+ ControlOption( n, SANE_ACTION_SET_VALUE, &nSetTo );
+ }
+}
+
+void Sane::SetOptionValue( int n, double const * pSet )
+{
+ if( ! maHandle || ( mppOptions[n]->type != SANE_TYPE_INT &&
+ mppOptions[n]->type != SANE_TYPE_FIXED ) )
+ return;
+ std::unique_ptr<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] = static_cast<SANE_Word>(pSet[i]);
+ }
+ ControlOption( n, SANE_ACTION_SET_VALUE, pFixedSet.get() );
+}
+
+namespace {
+
+enum FrameStyleType {
+ FrameStyle_BW, FrameStyle_Gray, FrameStyle_RGB, FrameStyle_Separated
+};
+
+}
+
+#define BYTE_BUFFER_SIZE 32768
+
+static 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 static_cast<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 = nullptr;
+ static const SANE_Option_Descriptor* pZero = nullptr;
+
+ if( bInit )
+ {
+ pDescArray = mppOptions.get();
+ if( mppOptions )
+ pZero = mppOptions[0];
+ return true;
+ }
+
+ bool bConsistent = true;
+
+ if( pDescArray != mppOptions.get() )
+ 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, fResl = 0.0;
+ int nOption;
+ nOption = GetOptionByName( "tl-x" );
+ if( nOption != -1 &&
+ GetOptionValue( nOption, fTLx ) &&
+ GetOptionUnit( nOption ) == SANE_UNIT_MM )
+ {
+ double fBRx;
+ nOption = GetOptionByName( "br-x" );
+ if( nOption != -1 &&
+ GetOptionValue( nOption, fBRx ) &&
+ GetOptionUnit( nOption ) == SANE_UNIT_MM )
+ {
+ nWidthMM = static_cast<int>(fabs(fBRx - fTLx));
+ }
+ }
+ nOption = GetOptionByName( "tl-y" );
+ if( nOption != -1 &&
+ GetOptionValue( nOption, fTLy ) &&
+ GetOptionUnit( nOption ) == SANE_UNIT_MM )
+ {
+ double fBRy;
+ nOption = GetOptionByName( "br-y" );
+ if( nOption != -1 &&
+ GetOptionValue( nOption, fBRy ) &&
+ GetOptionUnit( nOption ) == SANE_UNIT_MM )
+ {
+ nHeightMM = static_cast<int>(fabs(fBRy - fTLy));
+ }
+ }
+ if( ( nOption = GetOptionByName( "resolution" ) ) != -1 )
+ (void)GetOptionValue( nOption, fResl );
+
+ std::unique_ptr<sal_uInt8[]> pBuffer;
+
+ SANE_Status nStatus = SANE_STATUS_GOOD;
+
+ rBitmap.lock();
+ SvMemoryStream& aConverter = rBitmap.getStream();
+ aConverter.Seek( 0 );
+ aConverter.SetEndian( SvStreamEndian::LITTLE );
+
+ // write bitmap stream header
+ aConverter.WriteChar( 'B' ).WriteChar( 'M' );
+ aConverter.WriteUInt32( 0 );
+ aConverter.WriteUInt32( 0 );
+ aConverter.WriteUInt32( 60 );
+
+ // write BITMAPINFOHEADER
+ aConverter.WriteUInt32( 40 );
+ aConverter.WriteUInt32( 0 ); // fill in width later
+ aConverter.WriteUInt32( 0 ); // fill in height later
+ aConverter.WriteUInt16( 1 );
+ // create header for 24 bits
+ // correct later if necessary
+ aConverter.WriteUInt16( 24 );
+ aConverter.WriteUInt32( 0 );
+ aConverter.WriteUInt32( 0 );
+ aConverter.WriteUInt32( 0 );
+ aConverter.WriteUInt32( 0 );
+ aConverter.WriteUInt32( 0 );
+ aConverter.WriteUInt32( 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 > 0) || defined DBG_UTIL
+ const char* const 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( static_cast<
+ typename std::make_unsigned<
+ typename std::underlying_type<SANE_Frame>::type>::type>(
+ aParams.format)
+ > 4 )
+ {
+ aParams.format = SANE_Frame(5);
+ }
+ fprintf( stderr, "format: %s\n", ppFormats[ static_cast<int>(aParams.format) ] );
+ fprintf( stderr, "last_frame: %s\n", aParams.last_frame ? "TRUE" : "FALSE" );
+ fprintf( stderr, "depth: %d\n", static_cast<int>(aParams.depth) );
+ fprintf( stderr, "pixels_per_line: %d\n", static_cast<int>(aParams.pixels_per_line) );
+ fprintf( stderr, "bytes_per_line: %d\n", static_cast<int>(aParams.bytes_per_line) );
+#endif
+ if( ! pBuffer )
+ {
+ pBuffer.reset(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 (nStatus != SANE_STATUS_GOOD)
+ {
+ SAL_WARN("extensions.scanner", "SANE driver status is: " << nStatus);
+ }
+ }
+
+ 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;
+ }
+ utl::TempFile aFrame;
+ aFrame.EnableKillingFile();
+ FILE* pFrame = fopen(OUStringToOString(aFrame.GetFileName(), osl_getThreadTextEncoding()).getStr(), "w+b");
+ if( ! pFrame )
+ {
+ bSuccess = false;
+ break;
+ }
+ do {
+ if( ! bSynchronousRead )
+ {
+ fd_set fdset;
+ struct timeval tv;
+
+ FD_ZERO( &fdset );
+ FD_SET( static_cast<int>(fd), &fdset );
+ tv.tv_sec = 5;
+ tv.tv_usec = 0;
+ if( select( fd+1, &fdset, nullptr, nullptr, &tv ) == 0 )
+ fprintf( stderr, "Timeout on sane_read descriptor\n" );
+ }
+ nLen = 0;
+ nStatus = p_read( maHandle, pBuffer.get(), 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.get(), 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 = static_cast<sal_uInt32>(aParams.pixels_per_line);
+ sal_uInt32 nHeight = static_cast<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 = static_cast<int>((static_cast<double>(nWidth) / fResl) * 25.4);
+ if( ! nHeightMM )
+ nHeightMM = static_cast<int>((static_cast<double>(nHeight) / fResl) * 25.4);
+ SAL_INFO("extensions.scanner", "set dimensions to(" << nWidth << ", " << nHeight << ") Pixel, (" << nWidthMM << ", " << nHeightMM <<
+ ") mm, resolution is " << fResl);
+
+ aConverter.Seek( 18 );
+ aConverter.WriteUInt32( nWidth );
+ aConverter.WriteUInt32( nHeight );
+ aConverter.Seek( 38 );
+ aConverter.WriteUInt32( 1000*nWidth/nWidthMM );
+ aConverter.WriteUInt32( 1000*nHeight/nHeightMM );
+ bWidthSet = true;
+ }
+ aConverter.Seek(60);
+
+ if( eType == FrameStyle_BW )
+ {
+ aConverter.Seek( 10 );
+ aConverter.WriteUInt32( 64 );
+ aConverter.Seek( 28 );
+ aConverter.WriteUInt16( 1 );
+ aConverter.Seek( 54 );
+ // write color table
+ aConverter.WriteUInt16( 0xffff );
+ aConverter.WriteUChar( 0xff );
+ aConverter.WriteUChar( 0 );
+ aConverter.WriteUInt32( 0 );
+ aConverter.Seek( 64 );
+ }
+ else if( eType == FrameStyle_Gray )
+ {
+ aConverter.Seek( 10 );
+ aConverter.WriteUInt32( 1084 );
+ aConverter.Seek( 28 );
+ aConverter.WriteUInt16( 8 );
+ aConverter.Seek( 54 );
+ // write color table
+ for( nLine = 0; nLine < 256; nLine++ )
+ {
+ aConverter.WriteUChar( nLine );
+ aConverter.WriteUChar( nLine );
+ aConverter.WriteUChar( nLine );
+ aConverter.WriteUChar( 0 );
+ }
+ aConverter.Seek( 1084 );
+ }
+
+ for (nLine = nHeight-1; nLine >= 0; --nLine)
+ {
+ if (fseek(pFrame, nLine * aParams.bytes_per_line, SEEK_SET) == -1)
+ {
+ bSuccess = false;
+ break;
+ }
+ if( eType == FrameStyle_BW ||
+ ( eType == FrameStyle_Gray && aParams.depth == 8 )
+ )
+ {
+ SANE_Int items_read = fread( pBuffer.get(), 1, aParams.bytes_per_line, pFrame );
+ if (items_read != aParams.bytes_per_line)
+ {
+ SAL_WARN( "extensions.scanner", "short read, padding with zeros" );
+ memset(pBuffer.get() + items_read, 0, aParams.bytes_per_line - items_read);
+ }
+ aConverter.WriteBytes(pBuffer.get(), 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
+ int nPos = aConverter.TellEnd();
+
+ aConverter.Seek( 2 );
+ aConverter.WriteUInt32( nPos+1 );
+ aConverter.Seek( 0 );
+
+ rBitmap.unlock();
+
+ if( bSuccess )
+ {
+ // only cancel a successful operation
+ // sane disrupts memory else
+ p_cancel( maHandle );
+ CheckConsistency( "sane_cancel" );
+ }
+ pBuffer.reset();
+
+ ReloadOptions();
+
+
+ dbg_msg( "Sane::Start returns with %s\n", bSuccess ? "TRUE" : "FALSE" );
+
+ return bSuccess;
+}
+
+int Sane::GetRange( int n, std::unique_ptr<double[]>& rpDouble )
+{
+ if( mppOptions[n]->constraint_type != SANE_CONSTRAINT_RANGE &&
+ mppOptions[n]->constraint_type != SANE_CONSTRAINT_WORD_LIST )
+ {
+ return -1;
+ }
+
+ rpDouble = nullptr;
+ int nItems, i;
+ bool bIsFixed = mppOptions[n]->type == SANE_TYPE_FIXED;
+
+ 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 = static_cast<double>(mppOptions[n]->constraint.range->min);
+ fMax = static_cast<double>(mppOptions[n]->constraint.range->max);
+ fQuant = static_cast<double>(mppOptions[n]->constraint.range->quant);
+ }
+ if( fQuant != 0.0 )
+ {
+ dbg_msg( "quantum range [ %lg ; %lg ; %lg ]\n",
+ fMin, fQuant, fMax );
+ nItems = static_cast<int>((fMax - fMin)/fQuant)+1;
+ rpDouble.reset(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.reset(new double[2]);
+ rpDouble[0] = fMin;
+ rpDouble[1] = fMax;
+ return 0;
+ }
+ }
+ else
+ {
+ nItems = mppOptions[n]->constraint.word_list[0];
+ rpDouble.reset(new double[nItems]);
+ for( i=0; i<nItems; i++ )
+ {
+ rpDouble[i] = bIsFixed ?
+ SANE_UNFIX( mppOptions[n]->constraint.word_list[i+1] ) :
+ static_cast<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 = static_cast<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, nullptr );
+ return nStatus == SANE_STATUS_GOOD;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */