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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_filter.hxx"
#include "rtl/alloc.h"
#include <vcl/graph.hxx>
#include <vcl/bmpacc.hxx>
#include <vcl/svapp.hxx>
#include <svtools/fltcall.hxx>
#include <svl/solar.hrc>
#include <svtools/FilterConfigItem.hxx>
//============================ PCDReader ==================================
// Diese Aufloesungen sind in einer PCD-Datei enthalten:
enum PCDResolution {
PCDRES_BASE16, // 192 x 128
PCDRES_BASE4, // 384 x 256
PCDRES_BASE, // 768 x 512
// Die folgenden sind komprimiert und koennen
// von uns NICHT gelesen werden:
PCDRES_4BASE, // 1536 x 1024
PCDRES_16BASE // 3072 x 3072
};
class PCDReader {
private:
BOOL bStatus;
ULONG nLastPercent;
SvStream* pPCD;
BitmapWriteAccess* mpAcc;
BYTE nOrientation; // Ausrichtung des Bildes in der PCD-Datei:
// 0 - Turmspitze zeigt nach oben
// 1 - Turmspitze zeigt nach rechts
// 2 - Turmspitze zeigt nach unten
// 3 - Turmspitze zeigt nach links
PCDResolution eResolution; // Welche Aufloesung wir haben wollen
ULONG nWidth; // Breite des PCD-Bildes
ULONG nHeight; // Hoehe des PCD-Bildes
ULONG nImagePos; // Position des Bildes in der PCD-Datei
// Temporare BLue-Green-Red-Bitmap
ULONG nBMPWidth;
ULONG nBMPHeight;
void MayCallback(ULONG nPercent);
void CheckPCDImagePacFile();
// Prueft, ob es eine Photo-CD-Datei mit 'Image Pac' ist.
void ReadOrientation();
// Liest die Ausrichtung und setzt nOrientation
void ReadImage(ULONG nMinPercent, ULONG nMaxPercent);
public:
PCDReader() {}
~PCDReader() {}
BOOL ReadPCD( SvStream & rPCD, Graphic & rGraphic, FilterConfigItem* pConfigItem );
};
//=================== Methoden von PCDReader ==============================
BOOL PCDReader::ReadPCD( SvStream & rPCD, Graphic & rGraphic, FilterConfigItem* pConfigItem )
{
Bitmap aBmp;
bStatus = TRUE;
nLastPercent = 0;
pPCD = &rPCD;
MayCallback( 0 );
// Ist es eine PCD-Datei mit Bild ? ( setzt bStatus == FALSE, wenn nicht ):
CheckPCDImagePacFile();
// Orientierung des Bildes einlesen:
ReadOrientation();
// Welche Aufloesung wollen wir ?:
eResolution = PCDRES_BASE;
if ( pConfigItem )
{
sal_Int32 nResolution = pConfigItem->ReadInt32( String( RTL_CONSTASCII_USTRINGPARAM( "Resolution" ) ), 2 );
if ( nResolution == 1 )
eResolution = PCDRES_BASE4;
else if ( nResolution == 0 )
eResolution = PCDRES_BASE16;
}
// Groesse und Position (Position in PCD-Datei) des Bildes bestimmen:
switch (eResolution)
{
case PCDRES_BASE16 :
nWidth = 192;
nHeight = 128;
nImagePos = 8192;
break;
case PCDRES_BASE4 :
nWidth = 384;
nHeight = 256;
nImagePos = 47104;
break;
case PCDRES_BASE :
nWidth = 768;
nHeight = 512;
nImagePos = 196608;
break;
default:
bStatus = FALSE;
}
if ( bStatus )
{
if ( ( nOrientation & 0x01 ) == 0 )
{
nBMPWidth = nWidth;
nBMPHeight = nHeight;
}
else
{
nBMPWidth = nHeight;
nBMPHeight = nWidth;
}
aBmp = Bitmap( Size( nBMPWidth, nBMPHeight ), 24 );
if ( ( mpAcc = aBmp.AcquireWriteAccess() ) == FALSE )
return FALSE;
ReadImage( 5 ,65 );
aBmp.ReleaseAccess( mpAcc ), mpAcc = NULL;
rGraphic = aBmp;
}
return bStatus;
}
// -------------------------------------------------------------------------------------------
void PCDReader::MayCallback(ULONG /*nPercent*/)
{
/*
if ( nPercent >= nLastPercent + 3 )
{
nLastPercent=nPercent;
if ( pCallback != NULL && nPercent <= 100 && bStatus == TRUE )
{
if ( ( (*pCallback)( pCallerData, (USHORT)nPercent ) ) == TRUE )
bStatus = FALSE;
}
}
*/
}
// -------------------------------------------------------------------------------------------
void PCDReader::CheckPCDImagePacFile()
{
char Buf[ 8 ];
pPCD->Seek( 2048 );
pPCD->Read( Buf, 7 );
Buf[ 7 ] = 0;
if ( ByteString( Buf ).CompareTo( "PCD_IPI" ) != COMPARE_EQUAL )
bStatus = FALSE;
}
// -------------------------------------------------------------------------------------------
void PCDReader::ReadOrientation()
{
if ( bStatus == FALSE )
return;
pPCD->Seek( 194635 );
*pPCD >> nOrientation;
nOrientation &= 0x03;
}
// -------------------------------------------------------------------------------------------
void PCDReader::ReadImage(ULONG nMinPercent, ULONG nMaxPercent)
{
ULONG nx,ny,nW2,nH2,nYPair,ndy,nXPair;
long nL,nCb,nCr,nRed,nGreen,nBlue;
BYTE * pt;
BYTE * pL0; // Luminanz fuer jeden Pixel der 1. Zeile des aktuellen Zeilen-Paars
BYTE * pL1; // Luminanz fuer jeden Pixel der 2. Zeile des aktuellen Zeilen-Paars
BYTE * pCb; // Blau-Chrominanz fuer je 2x2 Pixel des aktuellen Zeilen-Paars
BYTE * pCr; // Rot-Chrominanz fuer je 2x2 Pixel des aktuellen Zeilen-Paars
BYTE * pL0N, * pL1N, * pCbN, * pCrN; // wie oben, nur fuer das naechste Zeilen-Paar
if ( bStatus == FALSE )
return;
nW2=nWidth>>1;
nH2=nHeight>>1;
pL0 =(BYTE*)rtl_allocateMemory( nWidth );
pL1 =(BYTE*)rtl_allocateMemory( nWidth );
pCb =(BYTE*)rtl_allocateMemory( nW2+1 );
pCr =(BYTE*)rtl_allocateMemory( nW2+1 );
pL0N=(BYTE*)rtl_allocateMemory( nWidth );
pL1N=(BYTE*)rtl_allocateMemory( nWidth );
pCbN=(BYTE*)rtl_allocateMemory( nW2+1 );
pCrN=(BYTE*)rtl_allocateMemory( nW2+1 );
if ( pL0 == NULL || pL1 == NULL || pCb == NULL || pCr == NULL ||
pL0N == NULL || pL1N == NULL || pCbN == NULL || pCrN == NULL)
{
rtl_freeMemory((void*)pL0 );
rtl_freeMemory((void*)pL1 );
rtl_freeMemory((void*)pCb );
rtl_freeMemory((void*)pCr );
rtl_freeMemory((void*)pL0N);
rtl_freeMemory((void*)pL1N);
rtl_freeMemory((void*)pCbN);
rtl_freeMemory((void*)pCrN);
bStatus = FALSE;
return;
}
pPCD->Seek( nImagePos );
// naechstes Zeilen-Paar := erstes Zeile-Paar:
pPCD->Read( pL0N, nWidth );
pPCD->Read( pL1N, nWidth );
pPCD->Read( pCbN, nW2 );
pPCD->Read( pCrN, nW2 );
pCbN[ nW2 ] = pCbN[ nW2 - 1 ];
pCrN[ nW2 ] = pCrN[ nW2 - 1 ];
for ( nYPair = 0; nYPair < nH2; nYPair++ )
{
// aktuelles Zeilen-Paar := naechstes Zeilen-Paar
pt=pL0; pL0=pL0N; pL0N=pt;
pt=pL1; pL1=pL1N; pL1N=pt;
pt=pCb; pCb=pCbN; pCbN=pt;
pt=pCr; pCr=pCrN; pCrN=pt;
// naechstes Zeilen-Paar holen:
if ( nYPair < nH2 - 1 )
{
pPCD->Read( pL0N, nWidth );
pPCD->Read( pL1N, nWidth );
pPCD->Read( pCbN, nW2 );
pPCD->Read( pCrN, nW2 );
pCbN[nW2]=pCbN[ nW2 - 1 ];
pCrN[nW2]=pCrN[ nW2 - 1 ];
}
else
{
for ( nXPair = 0; nXPair < nW2; nXPair++ )
{
pCbN[ nXPair ] = pCb[ nXPair ];
pCrN[ nXPair ] = pCr[ nXPair ];
}
}
// Schleife uber die beiden Zeilen des Zeilen-Paars:
for ( ndy = 0; ndy < 2; ndy++ )
{
ny = ( nYPair << 1 ) + ndy;
// Schleife ueber X:
for ( nx = 0; nx < nWidth; nx++ )
{
// nL,nCb,nCr fuer den Pixel nx,ny holen/berechenen:
nXPair = nx >> 1;
if ( ndy == 0 )
{
nL = (long)pL0[ nx ];
if (( nx & 1 ) == 0 )
{
nCb = (long)pCb[ nXPair ];
nCr = (long)pCr[ nXPair ];
}
else
{
nCb = ( ( (long)pCb[ nXPair ] ) + ( (long)pCb[ nXPair + 1 ] ) ) >> 1;
nCr = ( ( (long)pCr[ nXPair ] ) + ( (long)pCr[ nXPair + 1 ] ) ) >> 1;
}
}
else {
nL = pL1[ nx ];
if ( ( nx & 1 ) == 0 )
{
nCb = ( ( (long)pCb[ nXPair ] ) + ( (long)pCbN[ nXPair ] ) ) >> 1;
nCr = ( ( (long)pCr[ nXPair ] ) + ( (long)pCrN[ nXPair ] ) ) >> 1;
}
else
{
nCb = ( ( (long)pCb[ nXPair ] ) + ( (long)pCb[ nXPair + 1 ] ) +
( (long)pCbN[ nXPair ] ) + ( (long)pCbN[ nXPair + 1 ] ) ) >> 2;
nCr = ( ( (long)pCr[ nXPair ] ) + ( (long)pCr[ nXPair + 1] ) +
( (long)pCrN[ nXPair ] ) + ( (long)pCrN[ nXPair + 1 ] ) ) >> 2;
}
}
// Umwandlung von nL,nCb,nCr in nRed,nGreen,nBlue:
nL *= 89024L;
nCb -= 156;
nCr -= 137;
nRed = ( nL + nCr * 119374L + 0x8000 ) >> 16;
if ( nRed < 0 )
nRed = 0;
if ( nRed > 255)
nRed = 255;
nGreen = ( nL - nCb * 28198L - nCr * 60761L + 0x8000 ) >> 16;
if ( nGreen < 0 )
nGreen = 0;
if ( nGreen > 255 )
nGreen = 255;
nBlue = ( nL + nCb * 145352L + 0x8000 ) >> 16;
if ( nBlue < 0 )
nBlue = 0;
if ( nBlue > 255 )
nBlue = 255;
// Farbwert in pBMPMap eintragen:
if ( nOrientation < 2 )
{
if ( nOrientation == 0 )
mpAcc->SetPixel( ny, nx, BitmapColor( (BYTE)nRed, (BYTE)nGreen, (BYTE)nBlue ) );
else
mpAcc->SetPixel( nWidth - 1 - nx, ny, BitmapColor( (BYTE)nRed, (BYTE)nGreen, (BYTE)nBlue ) );
}
else
{
if ( nOrientation == 2 )
mpAcc->SetPixel( nHeight - 1 - ny, ( nWidth - 1 - nx ), BitmapColor( (BYTE)nRed, (BYTE)nGreen, (BYTE)nBlue ) );
else
mpAcc->SetPixel( nx, ( nHeight - 1 - ny ), BitmapColor( (BYTE)nRed, (BYTE)nGreen, (BYTE)nBlue ) );
}
}
}
if ( pPCD->GetError() )
bStatus = FALSE;
MayCallback( nMinPercent + ( nMaxPercent - nMinPercent ) * nYPair / nH2 );
if ( bStatus == FALSE )
break;
}
rtl_freeMemory((void*)pL0 );
rtl_freeMemory((void*)pL1 );
rtl_freeMemory((void*)pCb );
rtl_freeMemory((void*)pCr );
rtl_freeMemory((void*)pL0N);
rtl_freeMemory((void*)pL1N);
rtl_freeMemory((void*)pCbN);
rtl_freeMemory((void*)pCrN);
}
//================== GraphicImport - die exportierte Funktion ================
extern "C" BOOL __LOADONCALLAPI GraphicImport(SvStream & rStream, Graphic & rGraphic, FilterConfigItem* pConfigItem, BOOL )
{
PCDReader aPCDReader;
return aPCDReader.ReadPCD( rStream, rGraphic, pConfigItem );
}
//============================= fuer Windows ==================================
#ifdef WIN
static HINSTANCE hDLLInst = 0; // HANDLE der DLL
extern "C" int CALLBACK LibMain( HINSTANCE hDLL, WORD, WORD nHeap, LPSTR )
{
#ifndef WNT
if ( nHeap )
UnlockData( 0 );
#endif
hDLLInst = hDLL;
return TRUE;
}
extern "C" int CALLBACK WEP( int )
{
return 1;
}
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
