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imagemagick/coders/vips.c

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Import Upstream version 6.9.11.60
2023-02-03 21:16:55 +08:00
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% V V IIIII PPPP SSSSS %
% V V I P P SS %
% V V I PPPP SSS %
% V V I P SS %
% V IIIII P SSSSS %
% %
% %
% Read/Write VIPS Image Format %
% %
% Software Design %
% Dirk Lemstra %
% April 2014 %
% %
% %
% Copyright 1999-2021 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 %
% %
% https://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/attribute.h"
#include "magick/blob.h"
#include "magick/blob-private.h"
#include "magick/cache.h"
#include "magick/colorspace.h"
#include "magick/colorspace-private.h"
#include "magick/exception.h"
#include "magick/exception-private.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/monitor-private.h"
#include "magick/pixel-accessor.h"
#include "magick/property.h"
#include "magick/quantum-private.h"
#include "magick/static.h"
#include "magick/string_.h"
#include "magick/module.h"
/*
Define declaractions.
*/
#define VIPS_MAGIC_LSB 0x08f2a6b6U
#define VIPS_MAGIC_MSB 0xb6a6f208U
typedef enum
{
VIPSBandFormatNOTSET = -1,
VIPSBandFormatUCHAR = 0, /* Unsigned 8-bit int */
VIPSBandFormatCHAR = 1, /* Signed 8-bit int */
VIPSBandFormatUSHORT = 2, /* Unsigned 16-bit int */
VIPSBandFormatSHORT = 3, /* Signed 16-bit int */
VIPSBandFormatUINT = 4, /* Unsigned 32-bit int */
VIPSBandFormatINT = 5, /* Signed 32-bit int */
VIPSBandFormatFLOAT = 6, /* 32-bit IEEE float */
VIPSBandFormatCOMPLEX = 7, /* Complex (2 floats) */
VIPSBandFormatDOUBLE = 8, /* 64-bit IEEE double */
VIPSBandFormatDPCOMPLEX = 9 /* Complex (2 doubles) */
} VIPSBandFormat;
typedef enum
{
VIPSCodingNONE = 0, /* VIPS computation format */
VIPSCodingLABQ = 2, /* LABQ storage format */
VIPSCodingRAD = 6 /* Radiance storage format */
} VIPSCoding;
typedef enum
{
VIPSTypeMULTIBAND = 0, /* Some multiband image */
VIPSTypeB_W = 1, /* Some single band image */
VIPSTypeHISTOGRAM = 10, /* Histogram or LUT */
VIPSTypeFOURIER = 24, /* Image in Fourier space */
VIPSTypeXYZ = 12, /* CIE XYZ colour space */
VIPSTypeLAB = 13, /* CIE LAB colour space */
VIPSTypeCMYK = 15, /* im_icc_export() */
VIPSTypeLABQ = 16, /* 32-bit CIE LAB */
VIPSTypeRGB = 17, /* Some RGB */
VIPSTypeUCS = 18, /* UCS(1:1) colour space */
VIPSTypeLCH = 19, /* CIE LCh colour space */
VIPSTypeLABS = 21, /* 48-bit CIE LAB */
VIPSTypesRGB = 22, /* sRGB colour space */
VIPSTypeYXY = 23, /* CIE Yxy colour space */
VIPSTypeRGB16 = 25, /* 16-bit RGB */
VIPSTypeGREY16 = 26 /* 16-bit monochrome */
} VIPSType;
/*
Forward declarations.
*/
static MagickBooleanType
WriteVIPSImage(const ImageInfo *,Image *);
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% I s V I P S %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% IsVIPS() returns MagickTrue if the image format type, identified by the
% magick string, is VIPS.
%
% The format of the IsVIPS method is:
%
% MagickBooleanType IsVIPS(const unsigned char *magick,const size_t length)
%
% A description of each parameter follows:
%
% o magick: compare image format pattern against these bytes.
%
% o length: Specifies the length of the magick string.
%
*/
static MagickBooleanType IsVIPS(const unsigned char *magick,const size_t length)
{
if (length < 4)
return(MagickFalse);
if (memcmp(magick,"\010\362\246\266",4) == 0)
return(MagickTrue);
if (memcmp(magick,"\266\246\362\010",4) == 0)
return(MagickTrue);
return(MagickFalse);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e a d V I P S I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% ReadVIPSImage() reads a VIPS image file and returns it. It allocates the
% memory necessary for the new Image structure and returns a pointer to the
% new image.
%
% The format of the ReadVIPSImage method is:
%
% Image *ReadVIPSmage(const ImageInfo *image_info,ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o image_info: the image info.
%
% o exception: return any errors or warnings in this structure.
%
*/
static inline MagickBooleanType IsSupportedCombination(
const VIPSBandFormat format,const VIPSType type)
{
switch(type)
{
case VIPSTypeB_W:
case VIPSTypeCMYK:
case VIPSTypeRGB:
case VIPSTypesRGB:
return(MagickTrue);
case VIPSTypeGREY16:
case VIPSTypeRGB16:
switch(format)
{
case VIPSBandFormatUSHORT:
case VIPSBandFormatSHORT:
case VIPSBandFormatUINT:
case VIPSBandFormatINT:
case VIPSBandFormatFLOAT:
case VIPSBandFormatDOUBLE:
return(MagickTrue);
default:
return(MagickFalse);
}
default:
return(MagickFalse);
}
}
static inline Quantum ReadVIPSPixelNONE(Image *image,
const VIPSBandFormat format,const VIPSType type)
{
switch(type)
{
case VIPSTypeB_W:
case VIPSTypeRGB:
{
unsigned char
c;
switch(format)
{
case VIPSBandFormatUCHAR:
case VIPSBandFormatCHAR:
c=(unsigned char) ReadBlobByte(image);
break;
case VIPSBandFormatUSHORT:
case VIPSBandFormatSHORT:
c=(unsigned char) ReadBlobShort(image);
break;
case VIPSBandFormatUINT:
case VIPSBandFormatINT:
c=(unsigned char) ReadBlobLong(image);
break;
case VIPSBandFormatFLOAT:
c=(unsigned char) ReadBlobFloat(image);
break;
case VIPSBandFormatDOUBLE:
c=(unsigned char) ReadBlobDouble(image);
break;
default:
c=0;
break;
}
return(ScaleCharToQuantum(c));
}
case VIPSTypeGREY16:
case VIPSTypeRGB16:
{
unsigned short
s;
switch(format)
{
case VIPSBandFormatUSHORT:
case VIPSBandFormatSHORT:
s=(unsigned short) ReadBlobShort(image);
break;
case VIPSBandFormatUINT:
case VIPSBandFormatINT:
s=(unsigned short) ReadBlobLong(image);
break;
case VIPSBandFormatFLOAT:
s=(unsigned short) ReadBlobFloat(image);
break;
case VIPSBandFormatDOUBLE:
s=(unsigned short) ReadBlobDouble(image);
break;
default:
s=0;
break;
}
return(ScaleShortToQuantum(s));
}
case VIPSTypeCMYK:
case VIPSTypesRGB:
switch(format)
{
case VIPSBandFormatUCHAR:
case VIPSBandFormatCHAR:
return(ScaleCharToQuantum((unsigned char) ReadBlobByte(image)));
case VIPSBandFormatUSHORT:
case VIPSBandFormatSHORT:
return(ScaleShortToQuantum(ReadBlobShort(image)));
case VIPSBandFormatUINT:
case VIPSBandFormatINT:
return(ScaleLongToQuantum(ReadBlobLong(image)));
case VIPSBandFormatFLOAT:
return((Quantum) ((float) QuantumRange*(ReadBlobFloat(image)/1.0)));
case VIPSBandFormatDOUBLE:
return((Quantum) ((double) QuantumRange*(ReadBlobDouble(
image)/1.0)));
default:
return((Quantum) 0);
}
default:
return((Quantum) 0);
}
}
static MagickBooleanType ReadVIPSPixelsNONE(Image *image,
const VIPSBandFormat format,const VIPSType type,const unsigned int channels,
ExceptionInfo *exception)
{
Quantum
pixel;
IndexPacket
*indexes;
PixelPacket
*q;
ssize_t
x;
ssize_t
y;
for (y = 0; y < (ssize_t) image->rows; y++)
{
q=GetAuthenticPixels(image,0,y,image->columns,1,exception);
if (q == (PixelPacket *) NULL)
return MagickFalse;
indexes=GetAuthenticIndexQueue(image);
for (x=0; x < (ssize_t) image->columns; x++)
{
pixel=ReadVIPSPixelNONE(image,format,type);
SetPixelRed(q,pixel);
if (channels < 3)
{
SetPixelGreen(q,pixel);
SetPixelBlue(q,pixel);
if (channels == 2)
SetPixelAlpha(q,ReadVIPSPixelNONE(image,format,type));
}
else
{
SetPixelGreen(q,ReadVIPSPixelNONE(image,format,type));
SetPixelBlue(q,ReadVIPSPixelNONE(image,format,type));
if (channels == 4)
{
if (image->colorspace == CMYKColorspace)
SetPixelIndex(indexes+x,ReadVIPSPixelNONE(image,format,type));
else
SetPixelAlpha(q,ReadVIPSPixelNONE(image,format,type));
}
else if (channels == 5)
{
SetPixelIndex(indexes+x,ReadVIPSPixelNONE(image,format,type));
SetPixelAlpha(q,ReadVIPSPixelNONE(image,format,type));
}
}
q++;
}
if (SyncAuthenticPixels(image,exception) == MagickFalse)
return MagickFalse;
}
return(MagickTrue);
}
static Image *ReadVIPSImage(const ImageInfo *image_info,
ExceptionInfo *exception)
{
char
buffer[MaxTextExtent],
*metadata;
Image
*image;
MagickBooleanType
status;
ssize_t
n;
unsigned int
channels,
marker;
VIPSBandFormat
format;
VIPSCoding
coding;
VIPSType
type;
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickCoreSignature);
if (image_info->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
image_info->filename);
assert(exception != (ExceptionInfo *) NULL);
assert(exception->signature == MagickCoreSignature);
image=AcquireImage(image_info);
status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
if (status == MagickFalse)
{
image=DestroyImageList(image);
return((Image *) NULL);
}
marker=ReadBlobLSBLong(image);
if (marker == VIPS_MAGIC_LSB)
image->endian=LSBEndian;
else if (marker == VIPS_MAGIC_MSB)
image->endian=MSBEndian;
else
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
image->columns=(size_t) ReadBlobLong(image);
image->rows=(size_t) ReadBlobLong(image);
status=SetImageExtent(image,image->columns,image->rows);
if (status == MagickFalse)
{
InheritException(exception,&image->exception);
return(DestroyImageList(image));
}
channels=ReadBlobLong(image);
(void) ReadBlobLong(image); /* Legacy */
format=(VIPSBandFormat) ReadBlobLong(image);
switch(format)
{
case VIPSBandFormatUCHAR:
case VIPSBandFormatCHAR:
image->depth=8;
break;
case VIPSBandFormatUSHORT:
case VIPSBandFormatSHORT:
image->depth=16;
break;
case VIPSBandFormatUINT:
case VIPSBandFormatINT:
case VIPSBandFormatFLOAT:
image->depth=32;
break;
case VIPSBandFormatDOUBLE:
image->depth=64;
break;
default:
case VIPSBandFormatCOMPLEX:
case VIPSBandFormatDPCOMPLEX:
case VIPSBandFormatNOTSET:
ThrowReaderException(CoderError,"Unsupported band format");
}
coding=(VIPSCoding) ReadBlobLong(image);
type=(VIPSType) ReadBlobLong(image);
switch(type)
{
case VIPSTypeCMYK:
SetImageColorspace(image,CMYKColorspace);
if (channels == 5)
image->matte=MagickTrue;
break;
case VIPSTypeB_W:
case VIPSTypeGREY16:
SetImageColorspace(image,GRAYColorspace);
if (channels == 2)
image->matte=MagickTrue;
break;
case VIPSTypeRGB:
case VIPSTypeRGB16:
SetImageColorspace(image,RGBColorspace);
if (channels == 4)
image->matte=MagickTrue;
break;
case VIPSTypesRGB:
SetImageColorspace(image,sRGBColorspace);
if (channels == 4)
image->matte=MagickTrue;
break;
default:
case VIPSTypeFOURIER:
case VIPSTypeHISTOGRAM:
case VIPSTypeLAB:
case VIPSTypeLABS:
case VIPSTypeLABQ:
case VIPSTypeLCH:
case VIPSTypeMULTIBAND:
case VIPSTypeUCS:
case VIPSTypeXYZ:
case VIPSTypeYXY:
ThrowReaderException(CoderError,"Unsupported colorspace");
}
(void) SetImageBackgroundColor(image);
image->units=PixelsPerCentimeterResolution;
image->x_resolution=ReadBlobFloat(image)*10;
image->y_resolution=ReadBlobFloat(image)*10;
/*
Legacy, offsets, future
*/
(void) ReadBlobLongLong(image);
(void) ReadBlobLongLong(image);
(void) ReadBlobLongLong(image);
if (image_info->ping != MagickFalse)
return(image);
if (IsSupportedCombination(format,type) == MagickFalse)
ThrowReaderException(CoderError,
"Unsupported combination of band format and colorspace");
if (channels == 0 || channels > 5)
ThrowReaderException(CoderError,"Unsupported number of channels");
if (coding == VIPSCodingNONE)
status=ReadVIPSPixelsNONE(image,format,type,channels,exception);
else
ThrowReaderException(CoderError,"Unsupported coding");
metadata=(char *) NULL;
while ((n=ReadBlob(image,MaxTextExtent-1,(unsigned char *) buffer)) != 0)
{
buffer[n]='\0';
if (metadata == (char *) NULL)
metadata=ConstantString(buffer);
else
(void) ConcatenateString(&metadata,buffer);
}
if (metadata != (char *) NULL)
{
SetImageProperty(image,"vips:metadata",metadata);
metadata=(char *) RelinquishMagickMemory(metadata);
}
(void) CloseBlob(image);
if (status == MagickFalse)
return((Image *) NULL);
return(image);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e g i s t e r V I P S I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% RegisterVIPSmage() adds attributes for the VIPS 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 RegisterVIPSImage method is:
%
% size_t RegisterVIPSImage(void)
%
*/
ModuleExport size_t RegisterVIPSImage(void)
{
MagickInfo
*entry;
entry=SetMagickInfo("VIPS");
entry->decoder=(DecodeImageHandler *) ReadVIPSImage;
entry->encoder=(EncodeImageHandler *) WriteVIPSImage;
entry->magick=(IsImageFormatHandler *) IsVIPS;
entry->description=ConstantString("VIPS image");
entry->endian_support=MagickTrue;
entry->magick_module=ConstantString("VIPS");
(void) RegisterMagickInfo(entry);
return(MagickImageCoderSignature);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% U n r e g i s t e r V I P S I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% UnregisterVIPSImage() removes format registrations made by the
% VIPS module from the list of supported formats.
%
% The format of the UnregisterVIPSImage method is:
%
% UnregisterVIPSImage(void)
%
*/
ModuleExport void UnregisterVIPSImage(void)
{
(void) UnregisterMagickInfo("VIPS");
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% W r i t e V I P S I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% WriteVIPSImage() writes an image to a file in VIPS image format.
%
% The format of the WriteVIPSImage method is:
%
% MagickBooleanType WriteVIPSImage(const ImageInfo *image_info,
% Image *image)
%
% A description of each parameter follows.
%
% o image_info: the image info.
%
% o image: The image.
%
*/
static inline void WriteVIPSPixel(Image *image, const Quantum value)
{
if (image->depth == 16)
(void) WriteBlobShort(image,ScaleQuantumToShort(value));
else
(void) WriteBlobByte(image,ScaleQuantumToChar(value));
}
static MagickBooleanType WriteVIPSImage(const ImageInfo *image_info,
Image *image)
{
const char
*metadata;
MagickBooleanType
status;
const IndexPacket
*indexes;
const PixelPacket
*p;
ssize_t
x;
ssize_t
y;
unsigned int
channels;
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickCoreSignature);
assert(image != (Image *) NULL);
assert(image->signature == MagickCoreSignature);
if (image->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception);
if (status == MagickFalse)
return(status);
if (image->endian == LSBEndian)
(void) WriteBlobLSBLong(image,VIPS_MAGIC_LSB);
else
(void) WriteBlobLSBLong(image,VIPS_MAGIC_MSB);
(void) WriteBlobLong(image,(unsigned int) image->columns);
(void) WriteBlobLong(image,(unsigned int) image->rows);
(void) SetImageStorageClass(image,DirectClass);
channels=image->matte ? 4 : 3;
if (SetImageGray(image,&image->exception) != MagickFalse)
channels=image->matte ? 2 : 1;
else if (image->colorspace == CMYKColorspace)
channels=image->matte ? 5 : 4;
(void) WriteBlobLong(image,channels);
(void) WriteBlobLong(image,0);
if (image->depth == 16)
(void) WriteBlobLong(image,(unsigned int) VIPSBandFormatUSHORT);
else
{
image->depth=8;
(void) WriteBlobLong(image,(unsigned int) VIPSBandFormatUCHAR);
}
(void) WriteBlobLong(image,VIPSCodingNONE);
switch(image->colorspace)
{
case CMYKColorspace:
(void) WriteBlobLong(image,VIPSTypeCMYK);
break;
case GRAYColorspace:
if (image->depth == 16)
(void) WriteBlobLong(image, VIPSTypeGREY16);
else
(void) WriteBlobLong(image, VIPSTypeB_W);
break;
case RGBColorspace:
if (image->depth == 16)
(void) WriteBlobLong(image, VIPSTypeRGB16);
else
(void) WriteBlobLong(image, VIPSTypeRGB);
break;
default:
case sRGBColorspace:
(void) SetImageColorspace(image,sRGBColorspace);
(void) WriteBlobLong(image,VIPSTypesRGB);
break;
}
if (image->units == PixelsPerCentimeterResolution)
{
(void) WriteBlobFloat(image,(image->x_resolution / 10));
(void) WriteBlobFloat(image,(image->y_resolution / 10));
}
else if (image->units == PixelsPerInchResolution)
{
(void) WriteBlobFloat(image,(image->x_resolution / 25.4));
(void) WriteBlobFloat(image,(image->y_resolution / 25.4));
}
else
{
(void) WriteBlobLong(image,0);
(void) WriteBlobLong(image,0);
}
/*
Legacy, Offsets, Future
*/
for (y=0; y < 24; y++)
(void) WriteBlobByte(image,0);
for (y=0; y < (ssize_t) image->rows; y++)
{
p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception);
if (p == (const PixelPacket *) NULL)
break;
indexes=GetVirtualIndexQueue(image);
for (x=0; x < (ssize_t) image->columns; x++)
{
WriteVIPSPixel(image,GetPixelRed(p));
if (channels == 2)
WriteVIPSPixel(image,GetPixelAlpha(p));
else
{
WriteVIPSPixel(image,GetPixelGreen(p));
WriteVIPSPixel(image,GetPixelBlue(p));
if (channels >= 4)
{
if (image->colorspace == CMYKColorspace)
WriteVIPSPixel(image,GetPixelIndex(indexes+x));
else
WriteVIPSPixel(image,GetPixelAlpha(p));
}
else if (channels == 5)
{
WriteVIPSPixel(image,GetPixelIndex(indexes+x));
WriteVIPSPixel(image,GetPixelAlpha(p));
}
}
p++;
}
}
metadata=GetImageProperty(image,"vips:metadata");
if (metadata != (const char*) NULL)
WriteBlobString(image,metadata);
(void) CloseBlob(image);
return(status);
}