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ImageMagick-mirror/coders/sf3.c
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Dirk Lemstra 2abe65b018 Use the new license url.
2026-01-11 10:16:12 +01:00

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/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% SSSSS FFFFF 3333 %
% S F 3 %
% SSSSS FFF 33 %
% S F 3 %
% SSSSS F 3333 %
% %
% %
% Simple File Format Family %
% %
% Software Design %
% Yukari Hafner %
% July 2025 %
% %
% %
% Copyright @ 1999 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/license/ %
% %
% 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 "MagickCore/studio.h"
#include "MagickCore/blob.h"
#include "MagickCore/blob-private.h"
#include "MagickCore/constitute.h"
#include "MagickCore/colorspace-private.h"
#include "MagickCore/exception.h"
#include "MagickCore/exception-private.h"
#include "MagickCore/image.h"
#include "MagickCore/image-private.h"
#include "MagickCore/list.h"
#include "MagickCore/magick.h"
#include "MagickCore/memory_.h"
#include "MagickCore/module.h"
#include "MagickCore/monitor.h"
#include "MagickCore/monitor-private.h"
#include "MagickCore/resource_.h"
#include "MagickCore/quantum-private.h"
#include "MagickCore/static.h"
#include "MagickCore/string_.h"
/*
Enumerated declarations.
*/
typedef enum
{
SF3_PIXEL_INT8 = 0x01,
SF3_PIXEL_INT16 = 0x02,
SF3_PIXEL_INT32 = 0x04,
SF3_PIXEL_INT64 = 0x08,
SF3_PIXEL_UINT8 = 0x11,
SF3_PIXEL_UINT16 = 0x12,
SF3_PIXEL_UINT32 = 0x14,
SF3_PIXEL_UINT64 = 0x18,
SF3_PIXEL_FLOAT16 = 0x22,
SF3_PIXEL_FLOAT32 = 0x24,
SF3_PIXEL_FLOAT64 = 0x28
} SF3PixelFormat;
typedef enum
{
SF3_PIXEL_V = 0x01,
SF3_PIXEL_VA = 0x02,
SF3_PIXEL_RGB = 0x03,
SF3_PIXEL_RGBA = 0x04,
SF3_PIXEL_AV = 0x12,
SF3_PIXEL_BGR = 0x13,
SF3_PIXEL_ABGR = 0x14,
SF3_PIXEL_ARGB = 0x24,
SF3_PIXEL_BGRA = 0x34,
SF3_PIXEL_CMYK = 0x44,
SF3_PIXEL_KYMC = 0x54,
} SF3ChannelLayout;
/*
Forward declarations.
*/
static MagickBooleanType
WriteSF3Image(const ImageInfo *,Image *,ExceptionInfo *);
/*
CRC32 Implementation without dependency on zlib.
*/
static const unsigned int CRC32Table[] = {
0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2,
0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c,
0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423,
0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106,
0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d,
0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7,
0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa,
0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,
0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84,
0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e,
0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55,
0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28,
0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,
0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69,
0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc,
0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693,
0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
};
static unsigned int crc32(unsigned int crc, const void *buf, size_t size)
{
const unsigned char *p = (const unsigned char*)buf;
while (size--)
crc = CRC32Table[(crc ^ *p++) & 0xff] ^ (crc >> 8);
return crc;
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% I s S F 3 %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% IsSF3()() returns MagickTrue if the image format type, identified by the
% magick string, is SF3.
%
% The format of the IsSF3 method is:
%
% MagickBooleanType IsSF3(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 unsigned int IsSF3(const unsigned char *magick,const size_t length)
{
/*
The header is 16 bytes long, though the last 5 bytes aren't constant.
*/
if (length < 16)
return(MagickFalse);
if (memcmp(magick,"\x81SF3\x00\xE0\xD0\r\n\n\x03",11) == 0)
return(MagickTrue);
return(MagickFalse);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e a d S F 3 I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% ReadSF3Image() reads a Simple File Format Family 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 ReadSF3Image method is:
%
% Image *ReadSF3Image(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 Image *ReadSF3Image(const ImageInfo *image_info,ExceptionInfo *exception)
{
MagickBooleanType
status;
Image
*image;
ssize_t
count = 0;
unsigned char
channels,
format;
unsigned int
width,
height,
layers;
unsigned char
header[16];
/*
Open image file.
*/
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickCoreSignature);
assert(exception != (ExceptionInfo *) NULL);
assert(exception->signature == MagickCoreSignature);
if (IsEventLogging() != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
image_info->filename);
image=AcquireImage(image_info,exception);
status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
if (status == MagickFalse)
return(DestroyImageList(image));
/*
Read SF3 header information.
*/
count=ReadBlob(image,16,header);
if ((count != 16) || (memcmp(header,"\x81SF3\x00\xE0\xD0\r\n\n\x03",11) != 0))
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
width=ReadBlobLSBLong(image);
height=ReadBlobLSBLong(image);
layers = ReadBlobLSBLong(image);
if (width == 0 || height == 0 || layers == 0)
ThrowReaderException(CorruptImageError,"NegativeOrZeroImageSize");
channels=(unsigned char) ReadBlobByte(image);
format=(unsigned char) ReadBlobByte(image);
for (unsigned int z=0; z<layers; ++z)
{
QuantumInfo
*quantum_info;
QuantumType
quantum_type;
size_t
length = 0;
ssize_t
y;
unsigned char
*pixels;
image->endian=LSBEndian;
image->compression=NoCompression;
image->orientation=TopLeftOrientation;
image->columns=(size_t) width;
image->rows=(size_t) height;
image->depth=(size_t)((format & 0xF)*8);
if (image_info->ping != MagickFalse)
break;
if ((image_info->ping != MagickFalse) && (image_info->number_scenes != 0))
if (image->scene >= (image_info->scene+image_info->number_scenes-1))
break;
status=SetImageExtent(image,image->columns,image->rows,exception);
if (status == MagickFalse)
return(DestroyImageList(image));
switch(channels)
{
case SF3_PIXEL_V:
(void) SetImageColorspace(image,GRAYColorspace,exception);
SetQuantumImageType(image,GrayQuantum);
break;
case SF3_PIXEL_VA:
(void) SetImageColorspace(image,GRAYColorspace,exception);
SetQuantumImageType(image,GrayAlphaQuantum);
break;
case SF3_PIXEL_RGB:
(void) SetImageColorspace(image,RGBColorspace,exception);
SetQuantumImageType(image,RGBQuantum);
break;
case SF3_PIXEL_RGBA:
(void) SetImageColorspace(image,RGBColorspace,exception);
SetQuantumImageType(image,RGBAQuantum);
break;
case SF3_PIXEL_AV:
(void) SetImageColorspace(image,GRAYColorspace,exception);
SetQuantumImageType(image,GrayAlphaQuantum);
break;
case SF3_PIXEL_BGR:
(void) SetImageColorspace(image,RGBColorspace,exception);
SetQuantumImageType(image,BGRQuantum);
break;
case SF3_PIXEL_ABGR:
(void) SetImageColorspace(image,RGBColorspace,exception);
SetQuantumImageType(image,BGRAQuantum);
break;
case SF3_PIXEL_ARGB:
(void) SetImageColorspace(image,RGBColorspace,exception);
SetQuantumImageType(image,RGBAQuantum);
break;
case SF3_PIXEL_BGRA:
(void) SetImageColorspace(image,RGBColorspace,exception);
SetQuantumImageType(image,BGRAQuantum);
break;
case SF3_PIXEL_CMYK:
(void) SetImageColorspace(image,CMYKColorspace,exception);
SetQuantumImageType(image,CMYKQuantum);
break;
case SF3_PIXEL_KYMC:
(void) SetImageColorspace(image,CMYKColorspace,exception);
SetQuantumImageType(image,CMYKQuantum);
break;
default:
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
}
quantum_type=GetQuantumType(image,exception);
quantum_info=AcquireQuantumInfo(image_info,image);
if (quantum_info == (QuantumInfo *) NULL)
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
switch(format)
{
case SF3_PIXEL_INT8:
case SF3_PIXEL_INT16:
case SF3_PIXEL_INT32:
case SF3_PIXEL_INT64:
status=SetQuantumFormat(image,quantum_info,SignedQuantumFormat);
break;
case SF3_PIXEL_UINT8:
case SF3_PIXEL_UINT16:
case SF3_PIXEL_UINT32:
case SF3_PIXEL_UINT64:
status=SetQuantumFormat(image,quantum_info,UnsignedQuantumFormat);
break;
case SF3_PIXEL_FLOAT16:
case SF3_PIXEL_FLOAT32:
case SF3_PIXEL_FLOAT64:
status=SetQuantumFormat(image,quantum_info,FloatingPointQuantumFormat);
break;
default:
quantum_info=DestroyQuantumInfo(quantum_info);
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
}
if (status == MagickFalse)
{
quantum_info=DestroyQuantumInfo(quantum_info);
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
}
status=SetImageExtent(image,image->columns,image->rows,exception);
if (status == MagickFalse){
quantum_info=DestroyQuantumInfo(quantum_info);
return(DestroyImageList(image));
}
length=image->columns*(format & 0xF)*(channels & 0xF);
pixels=GetQuantumPixels(quantum_info);
for (y=0; y < (ssize_t) image->rows; ++y)
{
count=ReadBlob(image,length,pixels);
if (count != (ssize_t) length)
break;
(void) GetAuthenticPixels(image,0,y,image->columns,1,exception);
(void) ImportQuantumPixels(image,(CacheView *) NULL,
quantum_info,quantum_type,pixels,exception);
if (SyncAuthenticPixels(image,exception) == MagickFalse)
break;
}
quantum_info=DestroyQuantumInfo(quantum_info);
if (y < (ssize_t) image->rows)
{
ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
image->filename);
break;
}
if (image_info->number_scenes != 0)
if (image->scene >= (image_info->scene+image_info->number_scenes-1))
break;
if ((z+1) == layers)
break;
AcquireNextImage(image_info,image,exception);
if (GetNextImageInList(image) == (Image *) NULL)
{
status=MagickFalse;
break;
}
image=SyncNextImageInList(image);
status=SetImageProgress(image,LoadImagesTag,TellBlob(image),
GetBlobSize(image));
if (status == MagickFalse)
break;
}
if (status == MagickFalse)
return(DestroyImageList(image));
return(GetFirstImageInList(image));
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e g i s t e r S F 3 I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% RegisterSF3Image() adds properties for the SF3 image format to
% the list of supported formats. The properties 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 RegisterSF3Image method is:
%
% size_t RegisterSF3Image(void)
%
*/
ModuleExport size_t RegisterSF3Image(void)
{
MagickInfo
*entry;
static const char
SF3Note[] =
{
"See https://shirakumo.org/docs/sf3/ for information on the SF3 file"
" formats."
};
entry=AcquireMagickInfo("SF3","SF3","Simple File Format Family Images");
entry->decoder=(DecodeImageHandler *) ReadSF3Image;
entry->encoder=(EncodeImageHandler *) WriteSF3Image;
entry->magick=(IsImageFormatHandler *) IsSF3;
entry->flags|=CoderAdjoinFlag;
entry->flags|=CoderRawSupportFlag;
entry->flags|=CoderDecoderSeekableStreamFlag;
entry->flags|=CoderEncoderSeekableStreamFlag;
entry->format_type=ImplicitFormatType;
entry->mime_type=ConstantString("image/x.sf3");
entry->note=ConstantString(SF3Note);
(void) RegisterMagickInfo(entry);
return(MagickImageCoderSignature);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% U n r e g i s t e r S F 3 I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% UnregisterSF3Image() removes format registrations made by the
% SF3 module from the list of supported formats.
%
% The format of the UnregisterSF3Image method is:
%
% UnregisterSF3Image(void)
%
*/
ModuleExport void UnregisterSF3Image(void)
{
(void) UnregisterMagickInfo("SF3");
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% W r i t e S F 3 I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% WriteSF3Image() writes an image in the Simple File Format Family image
% format.
%
% The format of the WriteSF3Image method is:
%
% MagickBooleanType WriteSF3Image(const ImageInfo *image_info,
% Image *image,ExceptionInfo *exception)
%
% A description of each parameter follows.
%
% o image_info: the image info.
%
% o image: The image.
%
% o exception: return any errors or warnings in this structure.
%
*/
static MagickBooleanType WriteSF3Image(const ImageInfo *image_info,Image *image,
ExceptionInfo *exception)
{
MagickBooleanType
status;
QuantumInfo
*quantum_info;
QuantumFormatType
quantum_format;
QuantumType
quantum_type;
size_t
length,
number_scenes;
ssize_t
count,
scene,
y;
unsigned char
channels,
format,
header[16],
*pixels;
unsigned int
checksum;
/*
Open output image file.
*/
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickCoreSignature);
assert(image != (Image *) NULL);
assert(image->signature == MagickCoreSignature);
assert(exception != (ExceptionInfo *) NULL);
assert(exception->signature == MagickCoreSignature);
if (IsEventLogging() != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
if (status == MagickFalse)
return(status);
if ((image->columns > 4294967295UL) || (image->rows > 4294967295UL))
ThrowWriterException(ImageError,"WidthOrHeightExceedsLimit");
quantum_info=AcquireQuantumInfo(image_info,image);
if (quantum_info == (QuantumInfo *) NULL)
ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
(void) SetQuantumEndian(image,quantum_info,LSBEndian);
(void) SetQuantumPad(image,quantum_info,0);
number_scenes=GetImageListLength(image);
quantum_type=GetQuantumType(image,exception);
quantum_format=GetQuantumFormat(quantum_info);
switch (quantum_type)
{
case GrayQuantum:
channels = SF3_PIXEL_V;
quantum_type = GrayQuantum;
break;
case AlphaQuantum:
case OpacityQuantum:
case GrayAlphaQuantum:
channels = SF3_PIXEL_VA;
quantum_type = GrayAlphaQuantum;
break;
case IndexQuantum:
case CbYCrQuantum:
case MultispectralQuantum:
case RedQuantum:
case GreenQuantum:
case BlueQuantum:
case RGBPadQuantum:
case RGBQuantum:
channels = SF3_PIXEL_RGB;
quantum_type = RGBQuantum;
break;
case UndefinedQuantum:
case IndexAlphaQuantum:
case CbYCrAQuantum:
case CMYKAQuantum:
case CMYKOQuantum:
case RGBOQuantum:
case RGBAQuantum:
channels = SF3_PIXEL_RGBA;
quantum_type = RGBAQuantum;
break;
case BGROQuantum:
case BGRAQuantum:
channels = SF3_PIXEL_BGRA;
quantum_type = BGRAQuantum;
break;
case BGRQuantum:
channels = SF3_PIXEL_BGR;
quantum_type = BGRQuantum;
break;
case CyanQuantum:
case MagentaQuantum:
case YellowQuantum:
case BlackQuantum:
case CMYKQuantum:
channels = SF3_PIXEL_CMYK;
quantum_type = CMYKQuantum;
break;
default:
quantum_info=DestroyQuantumInfo(quantum_info);
ThrowWriterException(CoderError,"ImageTypeNotSupported");
break;
}
switch (quantum_format)
{
case FloatingPointQuantumFormat:
if (image->depth <= 16)
{
format = SF3_PIXEL_FLOAT16;
SetQuantumDepth(image,quantum_info,16);
}
else if (image->depth <= 32)
{
format = SF3_PIXEL_FLOAT32;
SetQuantumDepth(image,quantum_info,32);
}
else
{
format = SF3_PIXEL_FLOAT64;
SetQuantumDepth(image,quantum_info,64);
}
break;
case SignedQuantumFormat:
if (image->depth <= 8)
{
format = SF3_PIXEL_INT8;
SetQuantumDepth(image,quantum_info,8);
}
else if (image->depth <= 16)
{
format = SF3_PIXEL_INT16;
SetQuantumDepth(image,quantum_info,16);
}
else if (image->depth <= 32)
{
format = SF3_PIXEL_INT32;
SetQuantumDepth(image,quantum_info,32);
}
else
{
format = SF3_PIXEL_INT64;
SetQuantumDepth(image,quantum_info,64);
}
break;
case UndefinedQuantumFormat:
case UnsignedQuantumFormat:
SetQuantumFormat(image,quantum_info,UnsignedQuantumFormat);
if (image->depth <= 8)
{
format = SF3_PIXEL_UINT8;
SetQuantumDepth(image,quantum_info,8);
}
else if (image->depth <= 16)
{
format = SF3_PIXEL_UINT16;
SetQuantumDepth(image,quantum_info,16);
}
else if (image->depth <= 32)
{
format = SF3_PIXEL_UINT32;
SetQuantumDepth(image,quantum_info,32);
}
else
{
format = SF3_PIXEL_UINT64;
SetQuantumDepth(image,quantum_info,64);
}
break;
default:
quantum_info=DestroyQuantumInfo(quantum_info);
ThrowWriterException(CoderError,"ImageTypeNotSupported");
break;
}
/*
Write SF3 header.
*/
(void) WriteBlob(image,11,"\x81SF3\x00\xE0\xD0\r\n\n\x03");
(void) WriteBlobLSBLong(image,(unsigned int) 0); // Zero CRC32 for now
(void) WriteBlobByte(image,(unsigned char) 0);
checksum=0xFFFFFFFF;
(void) WriteBlobLSBLong(image,(unsigned int) image->columns);
(void) WriteBlobLSBLong(image,(unsigned int) image->rows);
(void) WriteBlobLSBLong(image,(unsigned int) number_scenes);
(void) WriteBlobByte(image,channels);
(void) WriteBlobByte(image,format);
if(IsBlobSeekable(image)){
(void) SeekBlob(image,16,SEEK_SET);
(void) ReadBlob(image,14,header);
checksum=crc32(checksum,header,14);
}
/*
Write pixels.
*/
scene=0;
do
{
const Quantum
*magick_restrict p;
pixels=(unsigned char *) GetQuantumPixels(quantum_info);
for (y=0; y < (ssize_t) image->rows; y++)
{
p=GetVirtualPixels(image,0,y,image->columns,1,exception);
if (p == (const Quantum *) NULL)
break;
length=ExportQuantumPixels(image,(CacheView *)NULL,quantum_info,
quantum_type,pixels,exception);
checksum=crc32(checksum,pixels,length);
count=WriteBlob(image,length,pixels);
if (count != (ssize_t) length)
break;
}
if (GetNextImageInList(image) == (Image *) NULL)
break;
image=SyncNextImageInList(image);
status=SetImageProgress(image,SaveImagesTag,scene++,number_scenes);
if (status == MagickFalse)
break;
}while (image_info->adjoin != MagickFalse);
/*
Finish up.
*/
quantum_info=DestroyQuantumInfo(quantum_info);
if(IsBlobSeekable(image)){
(void) SeekBlob(image,11,SEEK_SET);
(void) WriteBlobLSBLong(image,checksum ^ 0xFFFFFFFF);
}
if (CloseBlob(image) == MagickFalse)
status=MagickFalse;
return(status);
}
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