blob: b454a01d0c2d4503edc5efc295608a9b1ebd5e9b [file] [log] [blame]
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% Y Y U U V V %
% Y Y U U V V %
% Y U U V V %
% Y U U V V %
% Y UUU V %
% %
% %
% Read/Write Raw CCIR 601 4:1:1 or 4:2:2 Image Format %
% %
% Software Design %
% Cristy %
% July 1992 %
% %
% %
% Copyright 1999-2019 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 "MagickCore/studio.h"
#include "MagickCore/blob.h"
#include "MagickCore/blob-private.h"
#include "MagickCore/cache.h"
#include "MagickCore/colorspace.h"
#include "MagickCore/constitute.h"
#include "MagickCore/exception.h"
#include "MagickCore/exception-private.h"
#include "MagickCore/geometry.h"
#include "MagickCore/image.h"
#include "MagickCore/image-private.h"
#include "MagickCore/list.h"
#include "MagickCore/magick.h"
#include "MagickCore/memory_.h"
#include "MagickCore/monitor.h"
#include "MagickCore/monitor-private.h"
#include "MagickCore/pixel-accessor.h"
#include "MagickCore/resize.h"
#include "MagickCore/quantum-private.h"
#include "MagickCore/static.h"
#include "MagickCore/string_.h"
#include "MagickCore/module.h"
#include "MagickCore/utility.h"
/*
Forward declarations.
*/
static MagickBooleanType
WriteYUVImage(const ImageInfo *,Image *,ExceptionInfo *);
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e a d Y U V I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% ReadYUVImage() reads an image with digital YUV (CCIR 601 4:1:1, plane
% or partition interlaced, or 4:2:2 plane, partition interlaced or
% noninterlaced) bytes 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 ReadYUVImage method is:
%
% Image *ReadYUVImage(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 Image *ReadYUVImage(const ImageInfo *image_info,ExceptionInfo *exception)
{
Image
*chroma_image,
*image,
*resize_image;
InterlaceType
interlace;
MagickBooleanType
status;
register const Quantum
*chroma_pixels;
register ssize_t
x;
register Quantum
*q;
register unsigned char
*p;
ssize_t
count,
horizontal_factor,
vertical_factor,
y;
size_t
length,
quantum;
unsigned char
*scanline;
/*
Allocate image structure.
*/
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,exception);
if ((image->columns == 0) || (image->rows == 0))
ThrowReaderException(OptionError,"MustSpecifyImageSize");
status=SetImageExtent(image,image->columns,image->rows,exception);
if (status == MagickFalse)
return(DestroyImageList(image));
quantum=(ssize_t) (image->depth <= 8 ? 1 : 2);
interlace=image_info->interlace;
horizontal_factor=2;
vertical_factor=2;
if (image_info->sampling_factor != (char *) NULL)
{
GeometryInfo
geometry_info;
MagickStatusType
flags;
flags=ParseGeometry(image_info->sampling_factor,&geometry_info);
horizontal_factor=(ssize_t) geometry_info.rho;
vertical_factor=(ssize_t) geometry_info.sigma;
if ((flags & SigmaValue) == 0)
vertical_factor=horizontal_factor;
if ((horizontal_factor != 1) && (horizontal_factor != 2) &&
(vertical_factor != 1) && (vertical_factor != 2))
ThrowReaderException(CorruptImageError,"UnexpectedSamplingFactor");
}
if ((interlace == UndefinedInterlace) ||
((interlace == NoInterlace) && (vertical_factor == 2)))
{
interlace=NoInterlace; /* CCIR 4:2:2 */
if (vertical_factor == 2)
interlace=PlaneInterlace; /* CCIR 4:1:1 */
}
if (interlace != PartitionInterlace)
{
/*
Open image file.
*/
status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
if (status == MagickFalse)
{
image=DestroyImageList(image);
return((Image *) NULL);
}
if (DiscardBlobBytes(image,(MagickSizeType) image->offset) == MagickFalse)
ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
image->filename);
}
/*
Allocate memory for a scanline.
*/
if (interlace == NoInterlace)
scanline=(unsigned char *) AcquireQuantumMemory((size_t) (2UL*
image->columns+2UL),(size_t) quantum*sizeof(*scanline));
else
scanline=(unsigned char *) AcquireQuantumMemory(image->columns,
(size_t) quantum*sizeof(*scanline));
if (scanline == (unsigned char *) NULL)
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
status=MagickTrue;
do
{
chroma_image=CloneImage(image,(image->columns+horizontal_factor-1)/
horizontal_factor,(image->rows+vertical_factor-1)/vertical_factor,
MagickTrue,exception);
if (chroma_image == (Image *) NULL)
{
scanline=(unsigned char *) RelinquishMagickMemory(scanline);
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
}
/*
Convert raster image to pixel packets.
*/
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)
break;
if (interlace == PartitionInterlace)
{
AppendImageFormat("Y",image->filename);
status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
if (status == MagickFalse)
{
scanline=(unsigned char *) RelinquishMagickMemory(scanline);
image=DestroyImageList(image);
return((Image *) NULL);
}
}
for (y=0; y < (ssize_t) image->rows; y++)
{
register Quantum
*chroma_pixels;
if (interlace == NoInterlace)
{
if ((y > 0) || (GetPreviousImageInList(image) == (Image *) NULL))
{
length=2*quantum*image->columns;
count=ReadBlob(image,length,scanline);
if (count != (ssize_t) length)
{
status=MagickFalse;
ThrowFileException(exception,CorruptImageError,
"UnexpectedEndOfFile",image->filename);
break;
}
}
p=scanline;
q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
if (q == (Quantum *) NULL)
break;
chroma_pixels=QueueAuthenticPixels(chroma_image,0,y,
chroma_image->columns,1,exception);
if (chroma_pixels == (Quantum *) NULL)
break;
for (x=0; x < (ssize_t) image->columns; x+=2)
{
SetPixelRed(chroma_image,0,chroma_pixels);
if (quantum == 1)
SetPixelGreen(chroma_image,ScaleCharToQuantum(*p++),
chroma_pixels);
else
{
SetPixelGreen(chroma_image,ScaleShortToQuantum(((*p) << 8) |
*(p+1)),chroma_pixels);
p+=2;
}
if (quantum == 1)
SetPixelRed(image,ScaleCharToQuantum(*p++),q);
else
{
SetPixelRed(image,ScaleShortToQuantum(((*p) << 8) | *(p+1)),q);
p+=2;
}
SetPixelGreen(image,0,q);
SetPixelBlue(image,0,q);
q+=GetPixelChannels(image);
SetPixelGreen(image,0,q);
SetPixelBlue(image,0,q);
if (quantum == 1)
SetPixelBlue(chroma_image,ScaleCharToQuantum(*p++),chroma_pixels);
else
{
SetPixelBlue(chroma_image,ScaleShortToQuantum(((*p) << 8) |
*(p+1)),chroma_pixels);
p+=2;
}
if (quantum == 1)
SetPixelRed(image,ScaleCharToQuantum(*p++),q);
else
{
SetPixelRed(image,ScaleShortToQuantum(((*p) << 8) | *(p+1)),q);
p+=2;
}
chroma_pixels+=GetPixelChannels(chroma_image);
q+=GetPixelChannels(image);
}
}
else
{
if ((y > 0) || (GetPreviousImageInList(image) == (Image *) NULL))
{
length=quantum*image->columns;
count=ReadBlob(image,length,scanline);
if (count != (ssize_t) length)
{
status=MagickFalse;
ThrowFileException(exception,CorruptImageError,
"UnexpectedEndOfFile",image->filename);
break;
}
}
p=scanline;
q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
if (q == (Quantum *) NULL)
break;
for (x=0; x < (ssize_t) image->columns; x++)
{
if (quantum == 1)
SetPixelRed(image,ScaleCharToQuantum(*p++),q);
else
{
SetPixelRed(image,ScaleShortToQuantum(((*p) << 8) | *(p+1)),q);
p+=2;
}
SetPixelGreen(image,0,q);
SetPixelBlue(image,0,q);
q+=GetPixelChannels(image);
}
}
if (SyncAuthenticPixels(image,exception) == MagickFalse)
break;
if (interlace == NoInterlace)
if (SyncAuthenticPixels(chroma_image,exception) == MagickFalse)
break;
if (image->previous == (Image *) NULL)
{
status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
image->rows);
if (status == MagickFalse)
break;
}
}
if (interlace == PartitionInterlace)
{
(void) CloseBlob(image);
AppendImageFormat("U",image->filename);
status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
if (status == MagickFalse)
{
scanline=(unsigned char *) RelinquishMagickMemory(scanline);
image=DestroyImageList(image);
return((Image *) NULL);
}
}
if (interlace != NoInterlace)
{
for (y=0; y < (ssize_t) chroma_image->rows; y++)
{
length=quantum*chroma_image->columns;
count=ReadBlob(image,length,scanline);
if (count != (ssize_t) length)
{
status=MagickFalse;
ThrowFileException(exception,CorruptImageError,
"UnexpectedEndOfFile",image->filename);
break;
}
p=scanline;
q=QueueAuthenticPixels(chroma_image,0,y,chroma_image->columns,1,
exception);
if (q == (Quantum *) NULL)
break;
for (x=0; x < (ssize_t) chroma_image->columns; x++)
{
SetPixelRed(chroma_image,0,q);
if (quantum == 1)
SetPixelGreen(chroma_image,ScaleCharToQuantum(*p++),q);
else
{
SetPixelGreen(chroma_image,ScaleShortToQuantum(((*p) << 8) |
*(p+1)),q);
p+=2;
}
SetPixelBlue(chroma_image,0,q);
q+=GetPixelChannels(chroma_image);
}
if (SyncAuthenticPixels(chroma_image,exception) == MagickFalse)
break;
}
if (interlace == PartitionInterlace)
{
(void) CloseBlob(image);
AppendImageFormat("V",image->filename);
status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
if (status == MagickFalse)
{
scanline=(unsigned char *) RelinquishMagickMemory(scanline);
image=DestroyImageList(image);
return((Image *) NULL);
}
}
for (y=0; y < (ssize_t) chroma_image->rows; y++)
{
length=quantum*chroma_image->columns;
count=ReadBlob(image,length,scanline);
if (count != (ssize_t) length)
{
status=MagickFalse;
ThrowFileException(exception,CorruptImageError,
"UnexpectedEndOfFile",image->filename);
break;
}
p=scanline;
q=GetAuthenticPixels(chroma_image,0,y,chroma_image->columns,1,
exception);
if (q == (Quantum *) NULL)
break;
for (x=0; x < (ssize_t) chroma_image->columns; x++)
{
if (quantum == 1)
SetPixelBlue(chroma_image,ScaleCharToQuantum(*p++),q);
else
{
SetPixelBlue(chroma_image,ScaleShortToQuantum(((*p) << 8) |
*(p+1)),q);
p+=2;
}
q+=GetPixelChannels(chroma_image);
}
if (SyncAuthenticPixels(chroma_image,exception) == MagickFalse)
break;
}
}
/*
Scale image.
*/
resize_image=ResizeImage(chroma_image,image->columns,image->rows,
TriangleFilter,exception);
chroma_image=DestroyImage(chroma_image);
if (resize_image == (Image *) NULL)
{
scanline=(unsigned char *) RelinquishMagickMemory(scanline);
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
}
for (y=0; y < (ssize_t) image->rows; y++)
{
q=GetAuthenticPixels(image,0,y,image->columns,1,exception);
chroma_pixels=GetVirtualPixels(resize_image,0,y,resize_image->columns,1,
exception);
if ((q == (Quantum *) NULL) ||
(chroma_pixels == (const Quantum *) NULL))
break;
for (x=0; x < (ssize_t) image->columns; x++)
{
SetPixelGreen(image,GetPixelGreen(resize_image,chroma_pixels),q);
SetPixelBlue(image,GetPixelBlue(resize_image,chroma_pixels),q);
chroma_pixels+=GetPixelChannels(resize_image);
q+=GetPixelChannels(image);
}
if (SyncAuthenticPixels(image,exception) == MagickFalse)
break;
}
resize_image=DestroyImage(resize_image);
if (SetImageColorspace(image,YCbCrColorspace,exception) == MagickFalse)
break;
if (interlace == PartitionInterlace)
(void) CopyMagickString(image->filename,image_info->filename,
MagickPathExtent);
if (EOFBlob(image) != MagickFalse)
{
ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
image->filename);
break;
}
/*
Proceed to next image.
*/
if (image_info->number_scenes != 0)
if (image->scene >= (image_info->scene+image_info->number_scenes-1))
break;
if (interlace == NoInterlace)
count=ReadBlob(image,(size_t) (2*quantum*image->columns),scanline);
else
count=ReadBlob(image,(size_t) quantum*image->columns,scanline);
if (count != 0)
{
/*
Allocate next image structure.
*/
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;
}
} while (count != 0);
scanline=(unsigned char *) RelinquishMagickMemory(scanline);
(void) CloseBlob(image);
if (status == MagickFalse)
return(DestroyImageList(image));
return(GetFirstImageInList(image));
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e g i s t e r Y U V I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% RegisterYUVImage() adds attributes for the YUV 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 RegisterYUVImage method is:
%
% size_t RegisterYUVImage(void)
%
*/
ModuleExport size_t RegisterYUVImage(void)
{
MagickInfo
*entry;
entry=AcquireMagickInfo("YUV","YUV","CCIR 601 4:1:1 or 4:2:2");
entry->decoder=(DecodeImageHandler *) ReadYUVImage;
entry->encoder=(EncodeImageHandler *) WriteYUVImage;
entry->flags^=CoderAdjoinFlag;
entry->flags|=CoderRawSupportFlag;
(void) RegisterMagickInfo(entry);
return(MagickImageCoderSignature);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% U n r e g i s t e r Y U V I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% UnregisterYUVImage() removes format registrations made by the
% YUV module from the list of supported formats.
%
% The format of the UnregisterYUVImage method is:
%
% UnregisterYUVImage(void)
%
*/
ModuleExport void UnregisterYUVImage(void)
{
(void) UnregisterMagickInfo("YUV");
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% W r i t e Y U V I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% WriteYUVImage() writes an image to a file in the digital YUV
% (CCIR 601 4:1:1, plane or partition interlaced, or 4:2:2 plane, partition
% interlaced or noninterlaced) bytes and returns it.
%
% The format of the WriteYUVImage method is:
%
% MagickBooleanType WriteYUVImage(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 WriteYUVImage(const ImageInfo *image_info,Image *image,
ExceptionInfo *exception)
{
Image
*chroma_image,
*yuv_image;
InterlaceType
interlace;
MagickBooleanType
status;
MagickOffsetType
scene;
register const Quantum
*p,
*s;
register ssize_t
x;
size_t
height,
imageListLength,
quantum,
width;
ssize_t
horizontal_factor,
vertical_factor,
y;
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);
quantum=(size_t) (image->depth <= 8 ? 1 : 2);
interlace=image->interlace;
horizontal_factor=2;
vertical_factor=2;
if (image_info->sampling_factor != (char *) NULL)
{
GeometryInfo
geometry_info;
MagickStatusType
flags;
flags=ParseGeometry(image_info->sampling_factor,&geometry_info);
horizontal_factor=(ssize_t) geometry_info.rho;
vertical_factor=(ssize_t) geometry_info.sigma;
if ((flags & SigmaValue) == 0)
vertical_factor=horizontal_factor;
if ((horizontal_factor != 1) && (horizontal_factor != 2) &&
(vertical_factor != 1) && (vertical_factor != 2))
ThrowWriterException(CorruptImageError,"UnexpectedSamplingFactor");
}
if ((interlace == UndefinedInterlace) ||
((interlace == NoInterlace) && (vertical_factor == 2)))
{
interlace=NoInterlace; /* CCIR 4:2:2 */
if (vertical_factor == 2)
interlace=PlaneInterlace; /* CCIR 4:1:1 */
}
if (interlace != PartitionInterlace)
{
/*
Open output image file.
*/
status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
if (status == MagickFalse)
return(status);
}
else
{
AppendImageFormat("Y",image->filename);
status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
if (status == MagickFalse)
return(status);
}
scene=0;
imageListLength=GetImageListLength(image);
do
{
/*
Sample image to an even width and height, if necessary.
*/
image->depth=(size_t) (quantum == 1 ? 8 : 16);
width=image->columns+(image->columns & (horizontal_factor-1));
height=image->rows+(image->rows & (vertical_factor-1));
yuv_image=ResizeImage(image,width,height,TriangleFilter,exception);
if (yuv_image == (Image *) NULL)
{
(void) CloseBlob(image);
return(MagickFalse);
}
(void) TransformImageColorspace(yuv_image,YCbCrColorspace,exception);
/*
Downsample image.
*/
chroma_image=ResizeImage(image,width/horizontal_factor,
height/vertical_factor,TriangleFilter,exception);
if (chroma_image == (Image *) NULL)
{
(void) CloseBlob(image);
return(MagickFalse);
}
(void) TransformImageColorspace(chroma_image,YCbCrColorspace,exception);
if (interlace == NoInterlace)
{
/*
Write noninterlaced YUV.
*/
for (y=0; y < (ssize_t) yuv_image->rows; y++)
{
p=GetVirtualPixels(yuv_image,0,y,yuv_image->columns,1,exception);
if (p == (const Quantum *) NULL)
break;
s=GetVirtualPixels(chroma_image,0,y,chroma_image->columns,1,
exception);
if (s == (const Quantum *) NULL)
break;
for (x=0; x < (ssize_t) yuv_image->columns; x+=2)
{
if (quantum == 1)
{
(void) WriteBlobByte(image,ScaleQuantumToChar(
GetPixelGreen(yuv_image,s)));
(void) WriteBlobByte(image,ScaleQuantumToChar(
GetPixelRed(yuv_image,p)));
p+=GetPixelChannels(yuv_image);
(void) WriteBlobByte(image,ScaleQuantumToChar(
GetPixelBlue(yuv_image,s)));
(void) WriteBlobByte(image,ScaleQuantumToChar(
GetPixelRed(yuv_image,p)));
}
else
{
(void) WriteBlobByte(image,ScaleQuantumToChar(
GetPixelGreen(yuv_image,s)));
(void) WriteBlobShort(image,ScaleQuantumToShort(
GetPixelRed(yuv_image,p)));
p+=GetPixelChannels(yuv_image);
(void) WriteBlobByte(image,ScaleQuantumToChar(
GetPixelBlue(yuv_image,s)));
(void) WriteBlobShort(image,ScaleQuantumToShort(
GetPixelRed(yuv_image,p)));
}
p+=GetPixelChannels(yuv_image);
s++;
}
if (image->previous == (Image *) NULL)
{
status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
image->rows);
if (status == MagickFalse)
break;
}
}
yuv_image=DestroyImage(yuv_image);
}
else
{
/*
Initialize Y channel.
*/
for (y=0; y < (ssize_t) yuv_image->rows; y++)
{
p=GetVirtualPixels(yuv_image,0,y,yuv_image->columns,1,exception);
if (p == (const Quantum *) NULL)
break;
for (x=0; x < (ssize_t) yuv_image->columns; x++)
{
if (quantum == 1)
(void) WriteBlobByte(image,ScaleQuantumToChar(
GetPixelRed(yuv_image,p)));
else
(void) WriteBlobShort(image,ScaleQuantumToShort(
GetPixelRed(yuv_image,p)));
p+=GetPixelChannels(yuv_image);
}
if (image->previous == (Image *) NULL)
{
status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
image->rows);
if (status == MagickFalse)
break;
}
}
yuv_image=DestroyImage(yuv_image);
if (image->previous == (Image *) NULL)
{
status=SetImageProgress(image,SaveImageTag,1,3);
if (status == MagickFalse)
break;
}
/*
Initialize U channel.
*/
if (interlace == PartitionInterlace)
{
(void) CloseBlob(image);
AppendImageFormat("U",image->filename);
status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
if (status == MagickFalse)
return(status);
}
for (y=0; y < (ssize_t) chroma_image->rows; y++)
{
p=GetVirtualPixels(chroma_image,0,y,chroma_image->columns,1,
exception);
if (p == (const Quantum *) NULL)
break;
for (x=0; x < (ssize_t) chroma_image->columns; x++)
{
if (quantum == 1)
(void) WriteBlobByte(image,ScaleQuantumToChar(
GetPixelGreen(chroma_image,p)));
else
(void) WriteBlobShort(image,ScaleQuantumToShort(
GetPixelGreen(chroma_image,p)));
p+=GetPixelChannels(chroma_image);
}
}
if (image->previous == (Image *) NULL)
{
status=SetImageProgress(image,SaveImageTag,2,3);
if (status == MagickFalse)
break;
}
/*
Initialize V channel.
*/
if (interlace == PartitionInterlace)
{
(void) CloseBlob(image);
AppendImageFormat("V",image->filename);
status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
if (status == MagickFalse)
return(status);
}
for (y=0; y < (ssize_t) chroma_image->rows; y++)
{
p=GetVirtualPixels(chroma_image,0,y,chroma_image->columns,1,
exception);
if (p == (const Quantum *) NULL)
break;
for (x=0; x < (ssize_t) chroma_image->columns; x++)
{
if (quantum == 1)
(void) WriteBlobByte(image,ScaleQuantumToChar(
GetPixelBlue(chroma_image,p)));
else
(void) WriteBlobShort(image,ScaleQuantumToShort(
GetPixelBlue(chroma_image,p)));
p+=GetPixelChannels(chroma_image);
}
}
if (image->previous == (Image *) NULL)
{
status=SetImageProgress(image,SaveImageTag,2,3);
if (status == MagickFalse)
break;
}
}
chroma_image=DestroyImage(chroma_image);
if (interlace == PartitionInterlace)
(void) CopyMagickString(image->filename,image_info->filename,
MagickPathExtent);
if (GetNextImageInList(image) == (Image *) NULL)
break;
image=SyncNextImageInList(image);
status=SetImageProgress(image,SaveImagesTag,scene++,imageListLength);
if (status == MagickFalse)
break;
} while (image_info->adjoin != MagickFalse);
(void) CloseBlob(image);
return(MagickTrue);
}