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Diffstat (limited to 'extensions/source/scanner/sane.cxx')
| -rw-r--r-- | extensions/source/scanner/sane.cxx | 996 |
1 files changed, 996 insertions, 0 deletions
diff --git a/extensions/source/scanner/sane.cxx b/extensions/source/scanner/sane.cxx new file mode 100644 index 0000000000..0e92a87964 --- /dev/null +++ b/extensions/source/scanner/sane.cxx @@ -0,0 +1,996 @@ +/* -*- 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() +{ +#ifndef DISABLE_DYNLOADING + 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 ); + } +#endif + 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(); +#ifndef DISABLE_DYNLOADING + osl_unloadModule( pSaneLib ); +#endif + 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, std::u16string_view 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::TempFileNamed 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: */ |