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/* Copyright (c) MediaArea.net SARL. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license that can
* be found in the License.html file in the root of the source tree.
*/
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//
// Contributor: Lionel Duchateau, kurtnoise@free.fr
//
// From http://courses.engr.illinois.edu/ece390/books/labmanual/graphics-pcx.html
//
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//---------------------------------------------------------------------------
// Pre-compilation
#include "MediaInfo/PreComp.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
#include "MediaInfo/Setup.h"
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
#if defined(MEDIAINFO_PCX_YES)
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
#include "MediaInfo/Image/File_Pcx.h"
//---------------------------------------------------------------------------
namespace MediaInfoLib
{
//***************************************************************************
// Infos
//***************************************************************************
//---------------------------------------------------------------------------
const char* Pcx_VersionInfo(int16u Version)
{
switch(Version)
{
case 0 : return "Paintbrush v2.5";
case 2 : return "Paintbrush v2.8 with palette information";
case 3 : return "Paintbrush v2.8 without palette information";
case 4 : return "Paintbrush/Windows";
case 5 : return "Paintbrush v3.0+";
default: return "";
}
}
//***************************************************************************
// Static stuff
//***************************************************************************
//---------------------------------------------------------------------------
bool File_Pcx::FileHeader_Begin()
{
//Element_Size
if (Buffer_Size<130) //Size of the header
return false; //Must wait for more data
if (Buffer[0]!=0x0A
|| Buffer[1]>0x05
|| Buffer[2]!=0x01
|| !(Buffer[3]==1 || Buffer[3]==4 || Buffer[3]==8 || Buffer[3]==24))
{
Reject("PCX");
return false;
}
//All should be OK...
return true;
}
//***************************************************************************
// File Header Information
//***************************************************************************
//---------------------------------------------------------------------------
void File_Pcx::Read_Buffer_Continue()
{
//Parsing
int16u XMin, YMin, XMax, YMax, HorDPI, VertDPI, BytesPerLine, PaletteType, HScrSize, VScrSize;
int8u Manufacturer, Version, EncodingScheme, BitsPerPixel, ColorPlanes;
Get_L1 (Manufacturer, "Manufacturer");
Get_L1 (Version, "Version"); // 0,2,3,4,5
Get_L1 (EncodingScheme, "EncodingScheme"); // RLE=1
Get_L1 (BitsPerPixel, "Bits Per Pixel"); // 1,4,8,24
Get_L2 (XMin, "Left margin of image");
Get_L2 (YMin, "Upper margin of image");
Get_L2 (XMax, "Right margin of image");
Get_L2 (YMax, "Lower margin of image");
Get_L2 (HorDPI, "Horizontal Resolution");
Get_L2 (VertDPI, "Vertical Resolution");
Skip_XX(48, "Palette");
Skip_L1( "Reserved");
Get_L1 (ColorPlanes, "ColorPlanes");
Get_L2 (BytesPerLine, "BytesPerLine");
Get_L2 (PaletteType, "PaletteType");
Get_L2 (HScrSize, "Horizontal Screen Size");
Get_L2 (VScrSize, "Vertical Screen Size");
Skip_XX(56, "Filler");
FILLING_BEGIN();
//Integrity tests
if (XMax<=XMin
|| YMax<=YMin
|| BytesPerLine<XMax-XMin)
{
Reject("PCX");
return;
}
Accept("PCX");
Stream_Prepare(Stream_Image);
Fill(Stream_Image, 0, Image_Format, "PCX");
Fill(Stream_Image, 0, Image_Format_Version, Pcx_VersionInfo(Version));
Fill(Stream_Image, 0, Image_Width, XMax-XMin);
Fill(Stream_Image, 0, Image_Height, YMax-YMin);
Fill(Stream_Image, 0, Image_BitDepth, BitsPerPixel);
Fill(Stream_Image, 0, "DPI", Ztring::ToZtring(VertDPI) + __T(" x ") + Ztring::ToZtring(HorDPI));
Finish("PCX");
FILLING_END();
}
} //NameSpace
#endif
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