| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % 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 1999-2020 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); |
| } |
