/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% PPPP CCCC DDDD %
% P P C D D %
% PPPP C D D %
% P C D D %
% P CCCC DDDD %
% %
% %
% Read/Write Photo CD Image Format. %
% %
% Software Design %
% John Cristy %
% July 1992 %
% %
% %
% Copyright 1999-2007 ImageMagick Studio LLC, a non-profit organization %
% dedicated to making software imaging solutions freely available. %
% %
% You may not use this file except in compliance with the License. You may %
% obtain a copy of the License at %
% %
% http://www.imagemagick.org/script/license.php %
% %
% Unless required by applicable law or agreed to in writing, software %
% distributed under the License is distributed on an "AS IS" BASIS, %
% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
% See the License for the specific language governing permissions and %
% limitations under the License. %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%
*/
/*
Include declarations.
*/
#include "magick/studio.h"
#include "magick/property.h"
#include "magick/blob.h"
#include "magick/blob-private.h"
#include "magick/client.h"
#include "magick/colorspace.h"
#include "magick/constitute.h"
#include "magick/decorate.h"
#include "magick/exception.h"
#include "magick/exception-private.h"
#include "magick/gem.h"
#include "magick/geometry.h"
#include "magick/image.h"
#include "magick/image-private.h"
#include "magick/list.h"
#include "magick/magick.h"
#include "magick/memory_.h"
#include "magick/monitor.h"
#include "magick/montage.h"
#include "magick/resize.h"
#include "magick/shear.h"
#include "magick/quantum-private.h"
#include "magick/static.h"
#include "magick/string_.h"
#include "magick/module.h"
#include "magick/transform.h"
#include "magick/utility.h"
/*
Forward declarations.
*/
static MagickBooleanType
WritePCDImage(const ImageInfo *,Image *);
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% D e c o d e I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% DecodeImage recovers the Huffman encoded luminance and chrominance
% deltas.
%
% The format of the DecodeImage method is:
%
% MagickBooleanType DecodeImage(Image *image,unsigned char *luma,
% unsigned char *chroma1,unsigned char *chroma2)
%
% A description of each parameter follows:
%
% o image: The address of a structure of type Image.
%
% o luma: The address of a character buffer that contains the
% luminance information.
%
% o chroma1: The address of a character buffer that contains the
% chrominance information.
%
% o chroma2: The address of a character buffer that contains the
% chrominance information.
%
*/
static MagickBooleanType DecodeImage(Image *image,unsigned char *luma,
unsigned char *chroma1,unsigned char *chroma2)
{
#define IsSync ((sum & 0xffffff00UL) == 0xfffffe00UL)
#define DecodeImageTag "Decode/Image"
#define PCDGetBits(n) \
{ \
sum=(sum << n) & 0xffffffff; \
bits-=n; \
while (bits <= 24) \
{ \
if (p >= (buffer+0x800)) \
{ \
count=ReadBlob(image,0x800,buffer); \
p=buffer; \
} \
sum|=((unsigned int) (*p) << (24-bits)); \
bits+=8; \
p++; \
} \
if (EOFBlob(image) != MagickFalse) \
break; \
}
typedef struct PCDTable
{
unsigned int
length,
sequence;
MagickStatusType
mask;
unsigned char
key;
} PCDTable;
long
quantum;
MagickBooleanType
status;
PCDTable
*pcd_table[3];
register long
i,
j;
register PCDTable
*r;
register unsigned char
*p,
*q;
size_t
length;
ssize_t
count;
unsigned char
*buffer;
unsigned long
bits,
plane,
pcd_length[3],
row,
sum;
/*
Initialize Huffman tables.
*/
assert(image != (const Image *) NULL);
assert(image->signature == MagickSignature);
if (image->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
assert(luma != (unsigned char *) NULL);
assert(chroma1 != (unsigned char *) NULL);
assert(chroma2 != (unsigned char *) NULL);
buffer=(unsigned char *) AcquireQuantumMemory(0x800,sizeof(*buffer));
if (buffer == (unsigned char *) NULL)
ThrowBinaryException(ResourceLimitError,"MemoryAllocationFailed",
image->filename);
sum=0;
bits=32;
p=buffer+0x800;
for (i=0; i < (image->columns > 1536 ? 3 : 1); i++)
{
PCDGetBits(8);
length=(sum & 0xff)+1;
pcd_table[i]=(PCDTable *) AcquireQuantumMemory(length,
sizeof(*pcd_table[i]));
if (pcd_table[i] == (PCDTable *) NULL)
{
buffer=(unsigned char *) RelinquishMagickMemory(buffer);
ThrowBinaryException(ResourceLimitError,"MemoryAllocationFailed",
image->filename);
}
r=pcd_table[i];
for (j=0; j < (long) length; j++)
{
PCDGetBits(8);
r->length=(unsigned int) (sum & 0xff)+1;
if (r->length > 16)
{
buffer=(unsigned char *) RelinquishMagickMemory(buffer);
return(MagickFalse);
}
PCDGetBits(16);
r->sequence=(unsigned int) (sum & 0xffff) << 16;
PCDGetBits(8);
r->key=(unsigned char) (sum & 0xff);
r->mask=(~((1U << (32-r->length))-1));
r++;
}
pcd_length[i]=(unsigned long) length;
}
/*
Search for Sync byte.
*/
for (i=0; i < 1; i++)
PCDGetBits(16);
for (i=0; i < 1; i++)
PCDGetBits(16);
while ((sum & 0x00fff000UL) != 0x00fff000UL)
PCDGetBits(8);
while (IsSync == 0)
PCDGetBits(1);
/*
Recover the Huffman encoded luminance and chrominance deltas.
*/
count=0;
length=0;
plane=0;
row=0;
q=luma;
for ( ; ; )
{
if (IsSync != 0)
{
/*
Determine plane and row number.
*/
PCDGetBits(16);
row=((sum >> 9) & 0x1fff);
if (row == image->rows)
break;
PCDGetBits(8);
plane=sum >> 30;
PCDGetBits(16);
switch (plane)
{
case 0:
{
q=luma+row*image->columns;
count=(ssize_t) image->columns;
break;
}
case 2:
{
q=chroma1+(row >> 1)*image->columns;
count=(ssize_t) (image->columns >> 1);
plane--;
break;
}
case 3:
{
q=chroma2+(row >> 1)*image->columns;
count=(ssize_t) (image->columns >> 1);
plane--;
break;
}
default:
{
ThrowBinaryException(CorruptImageError,"CorruptImage",
image->filename);
}
}
length=pcd_length[plane];
if ((image->progress_monitor != (MagickProgressMonitor) NULL) &&
(QuantumTick((MagickOffsetType) row,image->rows) != MagickFalse))
{
status=image->progress_monitor(DecodeImageTag,(MagickOffsetType)
row,image->rows,image->client_data);
if (status == MagickFalse)
break;
}
continue;
}
/*
Decode luminance or chrominance deltas.
*/
r=pcd_table[plane];
for (i=0; ((i < (long) length) && ((sum & r->mask) != r->sequence)); i++)
r++;
if ((row > image->rows) || (r == (PCDTable *) NULL) ||
((size_t) (q-luma) > (image->columns*image->rows)))
{
(void) ThrowMagickException(&image->exception,GetMagickModule(),
CorruptImageWarning,"SkipToSyncByte","`%s'",image->filename);
while ((sum & 0x00fff000) != 0x00fff000)
PCDGetBits(8);
while (IsSync == 0)
PCDGetBits(1);
continue;
}
if (r->key < 128)
quantum=(long) (*q)+r->key;
else
quantum=(long) (*q)+r->key-256;
*q=(unsigned char) ((quantum < 0) ? 0 : (quantum > 255) ? 255 : quantum);
q++;
PCDGetBits(r->length);
count--;
}
/*
Free resources.
*/
for (i=0; i < (image->columns > 1536 ? 3 : 1); i++)
pcd_table[i]=(PCDTable *) RelinquishMagickMemory(pcd_table[i]);
buffer=(unsigned char *) RelinquishMagickMemory(buffer);
return(MagickTrue);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% I s P C D %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% IsPCD() returns MagickTrue if the image format type, identified by the
% magick string, is PCD.
%
% The format of the IsPCD method is:
%
% MagickBooleanType IsPCD(const unsigned char *magick,const size_t length)
%
% A description of each parameter follows:
%
% o magick: This string is generally the first few bytes of an image file
% or blob.
%
% o length: Specifies the length of the magick string.
%
%
*/
static MagickBooleanType IsPCD(const unsigned char *magick,const size_t length)
{
if (length < 2052)
return(MagickFalse);
if (LocaleNCompare((char *) magick+2048,"PCD_",4) == 0)
return(MagickTrue);
return(MagickFalse);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e a d P C D I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% ReadPCDImage() reads a Photo CD image file and returns it. It
% allocates the memory necessary for the new Image structure and returns a
% pointer to the new image. Much of the PCD decoder was derived from
% the program hpcdtoppm(1) by Hadmut Danisch.
%
% The format of the ReadPCDImage method is:
%
% image=ReadPCDImage(image_info)
%
% A description of each parameter follows:
%
% o image_info: The image info.
%
% o exception: return any errors or warnings in this structure.
%
*/
static inline size_t MagickMin(const size_t x,const size_t y)
{
if (x < y)
return(x);
return(y);
}
static Image *OverviewImage(const ImageInfo *image_info,Image *image,
ExceptionInfo *exception)
{
Image
*montage_image;
MontageInfo
*montage_info;
register Image
*p;
/*
Create the PCD Overview image.
*/
for (p=image; p != (Image *) NULL; p=p->next)
{
(void) DeleteImageProperty(p,"label");
(void) SetImageProperty(p,"label",DefaultTileLabel);
}
montage_info=CloneMontageInfo(image_info,(MontageInfo *) NULL);
(void) CopyMagickString(montage_info->filename,image_info->filename,
MaxTextExtent);
montage_image=MontageImageList(image_info,montage_info,image,exception);
montage_info=DestroyMontageInfo(montage_info);
if (montage_image == (Image *) NULL)
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
image=DestroyImage(image);
return(montage_image);
}
static void Upsample(const unsigned long width,const unsigned long height,
const unsigned long scaled_width,unsigned char *pixels)
{
register long
x,
y;
register unsigned char
*p,
*q,
*r;
/*
Create a new image that is a integral size greater than an existing one.
*/
assert(pixels != (unsigned char *) NULL);
for (y=0; y < (long) height; y++)
{
p=pixels+(height-1-y)*scaled_width+(width-1);
q=pixels+((height-1-y) << 1)*scaled_width+((width-1) << 1);
*q=(*p);
*(q+1)=(*(p));
for (x=1; x < (long) width; x++)
{
p--;
q-=2;
*q=(*p);
*(q+1)=(unsigned char) ((((unsigned long) *p)+
((unsigned long) *(p+1))+1) >> 1);
}
}
for (y=0; y < (long) (height-1); y++)
{
p=pixels+((unsigned long) y << 1)*scaled_width;
q=p+scaled_width;
r=q+scaled_width;
for (x=0; x < (long) (width-1); x++)
{
*q=(unsigned char) ((((unsigned long) *p)+((unsigned long) *r)+1) >> 1);
*(q+1)=(unsigned char) ((((unsigned long) *p)+((unsigned long) *(p+2))+
((unsigned long) *r)+((unsigned long) *(r+2))+2) >> 2);
q+=2;
p+=2;
r+=2;
}
*q++=(unsigned char) ((((unsigned long) *p++)+
((unsigned long) *r++)+1) >> 1);
*q++=(unsigned char) ((((unsigned long) *p++)+
((unsigned long) *r++)+1) >> 1);
}
p=pixels+(2*height-2)*scaled_width;
q=pixels+(2*height-1)*scaled_width;
(void) CopyMagickMemory(q,p,(size_t) (2*width));
}
static Image *ReadPCDImage(const ImageInfo *image_info,ExceptionInfo *exception)
{
Image
*image;
long
x;
MagickBooleanType
status;
MagickOffsetType
offset;
MagickSizeType
number_pixels;
register long
i,
y;
register PixelPacket
*q;
register unsigned char
*c1,
*c2,
*yy;
ssize_t
count;
unsigned char
*chroma1,
*chroma2,
*header,
*luma;
unsigned int
overview;
unsigned long
height,
number_images,
rotate,
scene,
width;
/*
Open image file.
*/
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickSignature);
if (image_info->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
image_info->filename);
assert(exception != (ExceptionInfo *) NULL);
assert(exception->signature == MagickSignature);
image=AllocateImage(image_info);
status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
if (status == MagickFalse)
{
image=DestroyImageList(image);
return((Image *) NULL);
}
/*
Determine if this is a PCD file.
*/
header=(unsigned char *) AcquireQuantumMemory(0x800,3UL*sizeof(*header));
if (header == (unsigned char *) NULL)
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
count=ReadBlob(image,3*0x800,header);
overview=LocaleNCompare((char *) header,"PCD_OPA",7) == 0;
if ((count == 0) ||
((LocaleNCompare((char *) header+0x800,"PCD",3) != 0) && !overview))
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
rotate=header[0x0e02] & 0x03;
number_images=(header[10] << 8) | header[11];
header=(unsigned char *) RelinquishMagickMemory(header);
/*
Determine resolution by scene specification.
*/
if ((image->columns == 0) || (image->rows == 0))
scene=3;
else
{
width=192;
height=128;
for (scene=1; scene < 6; scene++)
{
if ((width >= image->columns) && (height >= image->rows))
break;
width<<=1;
height<<=1;
}
}
if (image_info->number_scenes != 0)
scene=(unsigned long) MagickMin(image_info->scene,6);
if (overview)
scene=1;
/*
Initialize image structure.
*/
width=192;
height=128;
for (i=1; i < (long) MagickMin(scene,3); i++)
{
width<<=1;
height<<=1;
}
image->columns=width;
image->rows=height;
image->depth=8;
for ( ; i < (long) scene; i++)
{
image->columns<<=1;
image->rows<<=1;
}
/*
Allocate luma and chroma memory.
*/
if (SetImageExtent(image,0,0) == MagickFalse)
{
InheritException(exception,&image->exception);
return(DestroyImageList(image));
}
number_pixels=(MagickSizeType) image->columns*image->rows;
if (number_pixels != (size_t) number_pixels)
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
chroma1=(unsigned char *) AcquireQuantumMemory(image->columns+1UL,image->rows*
sizeof(*chroma1));
chroma2=(unsigned char *) AcquireQuantumMemory(image->columns+1UL,image->rows*
sizeof(*chroma2));
luma=(unsigned char *) AcquireQuantumMemory(image->columns+1UL,image->rows*
sizeof(*luma));
if ((chroma1 == (unsigned char *) NULL) ||
(chroma2 == (unsigned char *) NULL) || (luma == (unsigned char *) NULL))
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
/*
Advance to image data.
*/
offset=93;
if (overview)
offset=2;
else
if (scene == 2)
offset=20;
else
if (scene <= 1)
offset=1;
for (i=0; i < (long) (offset*0x800); i++)
(void) ReadBlobByte(image);
if (overview)
{
Image
*overview_image;
MagickProgressMonitor
progress_monitor;
register long
j;
/*
Read thumbnails from overview image.
*/
for (j=1; j <= (long) number_images; j++)
{
progress_monitor=SetImageProgressMonitor(image,
(MagickProgressMonitor) NULL,image->client_data);
(void) FormatMagickString(image->filename,MaxTextExtent,
"images/img%04ld.pcd",j);
(void) FormatMagickString(image->magick_filename,MaxTextExtent,
"images/img%04ld.pcd",j);
image->scene=(unsigned long) j;
image->columns=width;
image->rows=height;
image->depth=8;
yy=luma;
c1=chroma1;
c2=chroma2;
for (y=0; y < (long) height; y+=2)
{
count=ReadBlob(image,width,yy);
yy+=image->columns;
count=ReadBlob(image,width,yy);
yy+=image->columns;
count=ReadBlob(image,width >> 1,c1);
c1+=image->columns;
count=ReadBlob(image,width >> 1,c2);
c2+=image->columns;
}
Upsample(image->columns >> 1,image->rows >> 1,image->columns,chroma1);
Upsample(image->columns >> 1,image->rows >> 1,image->columns,chroma2);
/*
Transfer luminance and chrominance channels.
*/
yy=luma;
c1=chroma1;
c2=chroma2;
for (y=0; y < (long) image->rows; y++)
{
q=SetImagePixels(image,0,y,image->columns,1);
if (q == (PixelPacket *) NULL)
break;
for (x=0; x < (long) image->columns; x++)
{
q->red=ScaleCharToQuantum(*yy++);
q->green=ScaleCharToQuantum(*c1++);
q->blue=ScaleCharToQuantum(*c2++);
q++;
}
if (SyncImagePixels(image) == MagickFalse)
break;
}
image->colorspace=YCCColorspace;
if (LocaleCompare(image_info->magick,"PCDS") == 0)
image->colorspace=sRGBColorspace;
if (j < (long) number_images)
{
/*
Allocate next image structure.
*/
AllocateNextImage(image_info,image);
if (GetNextImageInList(image) == (Image *) NULL)
{
image=DestroyImageList(image);
return((Image *) NULL);
}
image=SyncNextImageInList(image);
}
(void) SetImageProgressMonitor(image,progress_monitor,
image->client_data);
if ((image->progress_monitor != (MagickProgressMonitor) NULL) &&
(QuantumTick(j-1,number_images) != MagickFalse))
{
status=image->progress_monitor(LoadImageTag,j-1,number_images,
image->client_data);
if (status == MagickFalse)
break;
}
}
chroma2=(unsigned char *) RelinquishMagickMemory(chroma2);
chroma1=(unsigned char *) RelinquishMagickMemory(chroma1);
luma=(unsigned char *) RelinquishMagickMemory(luma);
image=GetFirstImageInList(image);
overview_image=OverviewImage(image_info,image,exception);
return(overview_image);
}
/*
Read interleaved image.
*/
yy=luma;
c1=chroma1;
c2=chroma2;
for (y=0; y < (long) height; y+=2)
{
count=ReadBlob(image,width,yy);
yy+=image->columns;
count=ReadBlob(image,width,yy);
yy+=image->columns;
count=ReadBlob(image,width >> 1,c1);
c1+=image->columns;
count=ReadBlob(image,width >> 1,c2);
c2+=image->columns;
}
if (scene >= 4)
{
/*
Recover luminance deltas for 1536x1024 image.
*/
Upsample(768,512,image->columns,luma);
Upsample(384,256,image->columns,chroma1);
Upsample(384,256,image->columns,chroma2);
image->rows=1024;
for (i=0; i < (4*0x800); i++)
(void) ReadBlobByte(image);
status=DecodeImage(image,luma,chroma1,chroma2);
if ((scene >= 5) && status)
{
/*
Recover luminance deltas for 3072x2048 image.
*/
Upsample(1536,1024,image->columns,luma);
Upsample(768,512,image->columns,chroma1);
Upsample(768,512,image->columns,chroma2);
image->rows=2048;
offset=TellBlob(image)/0x800+12;
offset=SeekBlob(image,offset*0x800,SEEK_SET);
status=DecodeImage(image,luma,chroma1,chroma2);
if ((scene >= 6) && (status != MagickFalse))
{
/*
Recover luminance deltas for 6144x4096 image (vaporware).
*/
Upsample(3072,2048,image->columns,luma);
Upsample(1536,1024,image->columns,chroma1);
Upsample(1536,1024,image->columns,chroma2);
image->rows=4096;
}
}
}
Upsample(image->columns >> 1,image->rows >> 1,image->columns,chroma1);
Upsample(image->columns >> 1,image->rows >> 1,image->columns,chroma2);
/*
Transfer luminance and chrominance channels.
*/
yy=luma;
c1=chroma1;
c2=chroma2;
for (y=0; y < (long) image->rows; y++)
{
q=SetImagePixels(image,0,y,image->columns,1);
if (q == (PixelPacket *) NULL)
break;
for (x=0; x < (long) image->columns; x++)
{
q->red=ScaleCharToQuantum(*yy++);
q->green=ScaleCharToQuantum(*c1++);
q->blue=ScaleCharToQuantum(*c2++);
q++;
}
if (SyncImagePixels(image) == MagickFalse)
break;
if ((image->progress_monitor != (MagickProgressMonitor) NULL) &&
(QuantumTick(y,image->rows) != MagickFalse))
{
status=image->progress_monitor(LoadImageTag,y,image->rows,
image->client_data);
if (status == MagickFalse)
break;
}
}
chroma2=(unsigned char *) RelinquishMagickMemory(chroma2);
chroma1=(unsigned char *) RelinquishMagickMemory(chroma1);
luma=(unsigned char *) RelinquishMagickMemory(luma);
if (EOFBlob(image) != MagickFalse)
ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
image->filename);
CloseBlob(image);
if (image_info->ping == MagickFalse)
if ((rotate == 1) || (rotate == 3))
{
double
degrees;
Image
*rotate_image;
/*
Rotate image.
*/
degrees=rotate == 1 ? -90.0 : 90.0;
rotate_image=RotateImage(image,degrees,exception);
if (rotate_image != (Image *) NULL)
{
image=DestroyImage(image);
image=rotate_image;
}
}
/*
Set CCIR 709 primaries with a D65 white point.
*/
image->chromaticity.red_primary.x=0.6400f;
image->chromaticity.red_primary.y=0.3300f;
image->chromaticity.green_primary.x=0.3000f;
image->chromaticity.green_primary.y=0.6000f;
image->chromaticity.blue_primary.x=0.1500f;
image->chromaticity.blue_primary.y=0.0600f;
image->chromaticity.white_point.x=0.3127f;
image->chromaticity.white_point.y=0.3290f;
image->gamma=1.000f/2.200f;
image->colorspace=YCCColorspace;
if (LocaleCompare(image_info->magick,"PCDS") == 0)
image->colorspace=sRGBColorspace;
return(GetFirstImageInList(image));
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e g i s t e r P C D I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% RegisterPCDImage() adds attributes for the PCD image format to
% the list of supported formats. The attributes include the image format
% tag, a method to read and/or write the format, whether the format
% supports the saving of more than one frame to the same file or blob,
% whether the format supports native in-memory I/O, and a brief
% description of the format.
%
% The format of the RegisterPCDImage method is:
%
% unsigned long RegisterPCDImage(void)
%
*/
ModuleExport unsigned long RegisterPCDImage(void)
{
MagickInfo
*entry;
entry=SetMagickInfo("PCD");
entry->decoder=(DecodeImageHandler *) ReadPCDImage;
entry->encoder=(EncodeImageHandler *) WritePCDImage;
entry->magick=(IsImageFormatHandler *) IsPCD;
entry->adjoin=MagickFalse;
entry->description=ConstantString("Photo CD");
entry->module=ConstantString("PCD");
(void) RegisterMagickInfo(entry);
entry=SetMagickInfo("PCDS");
entry->decoder=(DecodeImageHandler *) ReadPCDImage;
entry->encoder=(EncodeImageHandler *) WritePCDImage;
entry->adjoin=MagickFalse;
entry->description=ConstantString("Photo CD");
entry->module=ConstantString("PCD");
(void) RegisterMagickInfo(entry);
return(MagickImageCoderSignature);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% U n r e g i s t e r P C D I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% UnregisterPCDImage() removes format registrations made by the
% PCD module from the list of supported formats.
%
% The format of the UnregisterPCDImage method is:
%
% UnregisterPCDImage(void)
%
*/
ModuleExport void UnregisterPCDImage(void)
{
(void) UnregisterMagickInfo("PCD");
(void) UnregisterMagickInfo("PCDS");
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% W r i t e P C D I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% WritePCDImage() writes an image in the Photo CD encoded image
% format.
%
% The format of the WritePCDImage method is:
%
% MagickBooleanType WritePCDImage(const ImageInfo *image_info,Image *image)
%
% A description of each parameter follows.
%
% o image_info: The image info.
%
% o image: The image.
%
%
*/
static MagickBooleanType WritePCDTile(const ImageInfo *image_info,Image *image,
const char *page_geometry,const char *tile_geometry)
{
GeometryInfo
geometry_info;
Image
*downsample_image,
*tile_image;
long
y;
MagickBooleanType
status;
MagickStatusType
flags;
RectangleInfo
geometry;
register const PixelPacket
*p,
*q;
register long
i,
x;
/*
Scale image to tile size.
*/
SetGeometry(image,&geometry);
(void) ParseMetaGeometry(page_geometry,&geometry.x,&geometry.y,
&geometry.width,&geometry.height);
if ((geometry.width % 2) != 0)
geometry.width--;
if ((geometry.height % 2) != 0)
geometry.height--;
tile_image=ResizeImage(image,geometry.width,geometry.height,TriangleFilter,
1.0,&image->exception);
if (tile_image == (Image *) NULL)
return(MagickFalse);
flags=ParseGeometry(page_geometry,&geometry_info);
geometry.width=(unsigned long) geometry_info.rho;
geometry.height=(unsigned long) geometry_info.sigma;
if ((flags & SigmaValue) == 0)
geometry.height=geometry.width;
if ((tile_image->columns != geometry.width) ||
(tile_image->rows != geometry.height))
{
Image
*bordered_image;
RectangleInfo
border_info;
/*
Put a border around the image.
*/
border_info.width=(geometry.width-tile_image->columns+1) >> 1;
border_info.height=(geometry.height-tile_image->rows+1) >> 1;
bordered_image=BorderImage(tile_image,&border_info,&image->exception);
if (bordered_image == (Image *) NULL)
return(MagickFalse);
tile_image=DestroyImage(tile_image);
tile_image=bordered_image;
}
(void) TransformImage(&tile_image,(char *) NULL,tile_geometry);
if (image_info->colorspace == UndefinedColorspace)
(void) SetImageColorspace(tile_image,YCCColorspace);
downsample_image=ResizeImage(tile_image,tile_image->columns/2,
tile_image->rows/2,TriangleFilter,1.0,&image->exception);
if (downsample_image == (Image *) NULL)
return(MagickFalse);
/*
Write tile to PCD file.
*/
for (y=0; y < (long) tile_image->rows; y+=2)
{
p=AcquireImagePixels(tile_image,0,y,tile_image->columns,2,
&tile_image->exception);
if (p == (const PixelPacket *) NULL)
break;
for (x=0; x < (long) (tile_image->columns << 1); x++)
{
(void) WriteBlobByte(image,ScaleQuantumToChar(p->red));
p++;
}
q=AcquireImagePixels(downsample_image,0,y >> 1,downsample_image->columns,
1,&downsample_image->exception);
if (q == (const PixelPacket *) NULL)
break;
for (x=0; x < (long) downsample_image->columns; x++)
{
(void) WriteBlobByte(image,ScaleQuantumToChar(q->green));
q++;
}
q=AcquireImagePixels(downsample_image,0,y >> 1,downsample_image->columns,
1,&downsample_image->exception);
if (q == (const PixelPacket *) NULL)
break;
for (x=0; x < (long) downsample_image->columns; x++)
{
(void) WriteBlobByte(image,ScaleQuantumToChar(q->blue));
q++;
}
if ((image->progress_monitor != (MagickProgressMonitor) NULL) &&
(QuantumTick(y,tile_image->rows) != MagickFalse))
{
status=image->progress_monitor(LoadImageTag,y,tile_image->rows,
image->client_data);
if (status == MagickFalse)
break;
}
}
for (i=0; i < 0x800; i++)
(void) WriteBlobByte(image,'\0');
downsample_image=DestroyImage(downsample_image);
tile_image=DestroyImage(tile_image);
return(MagickTrue);
}
static MagickBooleanType WritePCDImage(const ImageInfo *image_info,Image *image)
{
Image
*pcd_image;
MagickBooleanType
status;
register long
i;
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickSignature);
assert(image != (Image *) NULL);
assert(image->signature == MagickSignature);
if (image->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
pcd_image=image;
if (image->columns < image->rows)
{
Image
*rotate_image;
/*
Rotate portrait to landscape.
*/
rotate_image=RotateImage(image,90.0,&image->exception);
if (rotate_image == (Image *) NULL)
return(MagickFalse);
pcd_image=rotate_image;
}
/*
Open output image file.
*/
status=OpenBlob(image_info,pcd_image,WriteBinaryBlobMode,&image->exception);
if (status == MagickFalse)
return(status);
if (image_info->colorspace == UndefinedColorspace)
(void) SetImageColorspace(pcd_image,RGBColorspace);
/*
Write PCD image header.
*/
for (i=0; i < 32; i++)
(void) WriteBlobByte(pcd_image,0xff);
for (i=0; i < 4; i++)
(void) WriteBlobByte(pcd_image,0x0e);
for (i=0; i < 8; i++)
(void) WriteBlobByte(pcd_image,'\0');
for (i=0; i < 4; i++)
(void) WriteBlobByte(pcd_image,0x01);
for (i=0; i < 4; i++)
(void) WriteBlobByte(pcd_image,0x05);
for (i=0; i < 8; i++)
(void) WriteBlobByte(pcd_image,'\0');
for (i=0; i < 4; i++)
(void) WriteBlobByte(pcd_image,0x0A);
for (i=0; i < 36; i++)
(void) WriteBlobByte(pcd_image,'\0');
for (i=0; i < 4; i++)
(void) WriteBlobByte(pcd_image,0x01);
for (i=0; i < 1944; i++)
(void) WriteBlobByte(pcd_image,'\0');
(void) WriteBlob(pcd_image,7,(unsigned char *) "PCD_IPI");
(void) WriteBlobByte(pcd_image,0x06);
for (i=0; i < 1530; i++)
(void) WriteBlobByte(pcd_image,'\0');
if (image->columns < image->rows)
(void) WriteBlobByte(pcd_image,'\1');
else
(void) WriteBlobByte(pcd_image,'\0');
for (i=0; i < (3*0x800-1539); i++)
(void) WriteBlobByte(pcd_image,'\0');
/*
Write PCD tiles.
*/
status=WritePCDTile(image_info,pcd_image,"768x512>","192x128");
status=WritePCDTile(image_info,pcd_image,"768x512>","384x256");
status=WritePCDTile(image_info,pcd_image,"768x512>","768x512");
CloseBlob(pcd_image);
if (pcd_image != image)
pcd_image=DestroyImage(pcd_image);
return(status);
}
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