| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % Y Y YYYC BBBB YYYC RRRR % |
| % Y Y C B B C R R % |
| % Y C BBBB C RRRR % |
| % Y C B B C R R % |
| % Y YYYC BBBB YYYC R R % |
| % % |
| % % |
| % Read/Write Raw YCbCr Image Format % |
| % % |
| % Software Design % |
| % John Cristy % |
| % July 1992 % |
| % % |
| % % |
| % Copyright 1999-2013 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 "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/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/quantum-private.h" |
| #include "MagickCore/static.h" |
| #include "MagickCore/statistic.h" |
| #include "MagickCore/string_.h" |
| #include "MagickCore/module.h" |
| #include "MagickCore/utility.h" |
| |
| /* |
| Forward declarations. |
| */ |
| static MagickBooleanType |
| WriteYCBCRImage(const ImageInfo *,Image *,ExceptionInfo *); |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % R e a d Y C b C r I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % ReadYCBCRImage() reads an image of raw YCbCr or YCbCrA samples 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 ReadYCBCRImage method is: |
| % |
| % Image *ReadYCBCRImage(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 *ReadYCBCRImage(const ImageInfo *image_info, |
| ExceptionInfo *exception) |
| { |
| Image |
| *canvas_image, |
| *image; |
| |
| MagickBooleanType |
| status; |
| |
| MagickOffsetType |
| scene; |
| |
| QuantumInfo |
| *quantum_info; |
| |
| QuantumType |
| quantum_type; |
| |
| register const Quantum |
| *p; |
| |
| register ssize_t |
| i, |
| x; |
| |
| register Quantum |
| *q; |
| |
| size_t |
| length; |
| |
| ssize_t |
| count, |
| y; |
| |
| unsigned char |
| *pixels; |
| |
| /* |
| 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=AcquireImage(image_info,exception); |
| if ((image->columns == 0) || (image->rows == 0)) |
| ThrowReaderException(OptionError,"MustSpecifyImageSize"); |
| SetImageColorspace(image,YCbCrColorspace,exception); |
| if (image_info->interlace != PartitionInterlace) |
| { |
| status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception); |
| if (status == MagickFalse) |
| { |
| image=DestroyImageList(image); |
| return((Image *) NULL); |
| } |
| if (DiscardBlobBytes(image,image->offset) == MagickFalse) |
| ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile", |
| image->filename); |
| } |
| /* |
| Create virtual canvas to support cropping (i.e. image.rgb[100x100+10+20]). |
| */ |
| canvas_image=CloneImage(image,image->extract_info.width,1,MagickFalse, |
| exception); |
| (void) SetImageVirtualPixelMethod(canvas_image,BlackVirtualPixelMethod, |
| exception); |
| quantum_info=AcquireQuantumInfo(image_info,canvas_image); |
| if (quantum_info == (QuantumInfo *) NULL) |
| ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); |
| pixels=GetQuantumPixels(quantum_info); |
| quantum_type=RGBQuantum; |
| if (LocaleCompare(image_info->magick,"YCbCrA") == 0) |
| { |
| quantum_type=RGBAQuantum; |
| image->alpha_trait=BlendPixelTrait; |
| } |
| if (image_info->number_scenes != 0) |
| while (image->scene < image_info->scene) |
| { |
| /* |
| Skip to next image. |
| */ |
| image->scene++; |
| length=GetQuantumExtent(canvas_image,quantum_info,quantum_type); |
| for (y=0; y < (ssize_t) image->rows; y++) |
| { |
| count=ReadBlob(image,length,pixels); |
| if (count != (ssize_t) length) |
| break; |
| } |
| } |
| count=0; |
| length=0; |
| scene=0; |
| do |
| { |
| /* |
| Read pixels to virtual canvas image then push to image. |
| */ |
| if ((image_info->ping != MagickFalse) && (image_info->number_scenes != 0)) |
| if (image->scene >= (image_info->scene+image_info->number_scenes-1)) |
| break; |
| SetImageColorspace(image,YCbCrColorspace,exception); |
| switch (image_info->interlace) |
| { |
| case NoInterlace: |
| default: |
| { |
| /* |
| No interlacing: YCbCrYCbCrYCbCrYCbCrYCbCrYCbCr... |
| */ |
| if (scene == 0) |
| { |
| length=GetQuantumExtent(canvas_image,quantum_info,quantum_type); |
| count=ReadBlob(image,length,pixels); |
| } |
| for (y=0; y < (ssize_t) image->extract_info.height; y++) |
| { |
| if (count != (ssize_t) length) |
| { |
| ThrowFileException(exception,CorruptImageError, |
| "UnexpectedEndOfFile",image->filename); |
| break; |
| } |
| q=GetAuthenticPixels(canvas_image,0,0,canvas_image->columns,1, |
| exception); |
| if (q == (Quantum *) NULL) |
| break; |
| length=ImportQuantumPixels(canvas_image,(CacheView *) NULL, |
| quantum_info,quantum_type,pixels,exception); |
| if (SyncAuthenticPixels(canvas_image,exception) == MagickFalse) |
| break; |
| if (((y-image->extract_info.y) >= 0) && |
| ((y-image->extract_info.y) < (ssize_t) image->rows)) |
| { |
| p=GetVirtualPixels(canvas_image,canvas_image->extract_info.x,0, |
| canvas_image->columns,1,exception); |
| q=QueueAuthenticPixels(image,0,y-image->extract_info.y, |
| image->columns,1,exception); |
| if ((p == (const Quantum *) NULL) || |
| (q == (Quantum *) NULL)) |
| break; |
| for (x=0; x < (ssize_t) image->columns; x++) |
| { |
| SetPixelRed(image,GetPixelRed(canvas_image,p),q); |
| SetPixelGreen(image,GetPixelGreen(canvas_image,p),q); |
| SetPixelBlue(image,GetPixelBlue(canvas_image,p),q); |
| if (image->alpha_trait == BlendPixelTrait) |
| SetPixelAlpha(image,GetPixelAlpha(canvas_image,p),q); |
| p+=GetPixelChannels(canvas_image); |
| q+=GetPixelChannels(image); |
| } |
| if (SyncAuthenticPixels(image,exception) == MagickFalse) |
| break; |
| } |
| if (image->previous == (Image *) NULL) |
| { |
| status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y, |
| image->rows); |
| if (status == MagickFalse) |
| break; |
| } |
| count=ReadBlob(image,length,pixels); |
| } |
| break; |
| } |
| case LineInterlace: |
| { |
| static QuantumType |
| quantum_types[4] = |
| { |
| RedQuantum, |
| GreenQuantum, |
| BlueQuantum, |
| OpacityQuantum |
| }; |
| |
| /* |
| Line interlacing: YYY...CbCbCb...CrCrCr...YYY...CbCbCb...CrCrCr... |
| */ |
| if (scene == 0) |
| { |
| length=GetQuantumExtent(canvas_image,quantum_info,RedQuantum); |
| count=ReadBlob(image,length,pixels); |
| } |
| for (y=0; y < (ssize_t) image->extract_info.height; y++) |
| { |
| for (i=0; i < (image->alpha_trait == BlendPixelTrait ? 4 : 3); i++) |
| { |
| if (count != (ssize_t) length) |
| { |
| ThrowFileException(exception,CorruptImageError, |
| "UnexpectedEndOfFile",image->filename); |
| break; |
| } |
| quantum_type=quantum_types[i]; |
| q=GetAuthenticPixels(canvas_image,0,0,canvas_image->columns,1, |
| exception); |
| if (q == (Quantum *) NULL) |
| break; |
| length=ImportQuantumPixels(canvas_image,(CacheView *) NULL, |
| quantum_info,quantum_type,pixels,exception); |
| if (SyncAuthenticPixels(canvas_image,exception) == MagickFalse) |
| break; |
| if (((y-image->extract_info.y) >= 0) && |
| ((y-image->extract_info.y) < (ssize_t) image->rows)) |
| { |
| p=GetVirtualPixels(canvas_image,canvas_image->extract_info.x, |
| 0,canvas_image->columns,1,exception); |
| q=GetAuthenticPixels(image,0,y-image->extract_info.y, |
| image->columns,1,exception); |
| if ((p == (const Quantum *) NULL) || |
| (q == (Quantum *) NULL)) |
| break; |
| for (x=0; x < (ssize_t) image->columns; x++) |
| { |
| switch (quantum_type) |
| { |
| case RedQuantum: |
| { |
| SetPixelRed(image,GetPixelRed(canvas_image,p),q); |
| break; |
| } |
| case GreenQuantum: |
| { |
| SetPixelGreen(image,GetPixelGreen(canvas_image,p),q); |
| break; |
| } |
| case BlueQuantum: |
| { |
| SetPixelBlue(image,GetPixelBlue(canvas_image,p),q); |
| break; |
| } |
| case OpacityQuantum: |
| { |
| SetPixelAlpha(image,GetPixelAlpha(canvas_image,p),q); |
| break; |
| } |
| default: |
| break; |
| } |
| p+=GetPixelChannels(canvas_image); |
| q+=GetPixelChannels(image); |
| } |
| if (SyncAuthenticPixels(image,exception) == MagickFalse) |
| break; |
| } |
| count=ReadBlob(image,length,pixels); |
| } |
| if (image->previous == (Image *) NULL) |
| { |
| status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y, |
| image->rows); |
| if (status == MagickFalse) |
| break; |
| } |
| } |
| break; |
| } |
| case PlaneInterlace: |
| { |
| /* |
| Plane interlacing: YYYYYY...CbCbCbCbCbCb...CrCrCrCrCrCr... |
| */ |
| if (scene == 0) |
| { |
| length=GetQuantumExtent(canvas_image,quantum_info,RedQuantum); |
| count=ReadBlob(image,length,pixels); |
| } |
| for (y=0; y < (ssize_t) image->extract_info.height; y++) |
| { |
| if (count != (ssize_t) length) |
| { |
| ThrowFileException(exception,CorruptImageError, |
| "UnexpectedEndOfFile",image->filename); |
| break; |
| } |
| q=GetAuthenticPixels(canvas_image,0,0,canvas_image->columns,1, |
| exception); |
| if (q == (Quantum *) NULL) |
| break; |
| length=ImportQuantumPixels(canvas_image,(CacheView *) NULL, |
| quantum_info,RedQuantum,pixels,exception); |
| if (SyncAuthenticPixels(canvas_image,exception) == MagickFalse) |
| break; |
| if (((y-image->extract_info.y) >= 0) && |
| ((y-image->extract_info.y) < (ssize_t) image->rows)) |
| { |
| p=GetVirtualPixels(canvas_image,canvas_image->extract_info.x,0, |
| canvas_image->columns,1,exception); |
| q=GetAuthenticPixels(image,0,y-image->extract_info.y, |
| image->columns,1,exception); |
| if ((p == (const Quantum *) NULL) || |
| (q == (Quantum *) NULL)) |
| break; |
| for (x=0; x < (ssize_t) image->columns; x++) |
| { |
| SetPixelRed(image,GetPixelRed(canvas_image,p),q); |
| p+=GetPixelChannels(canvas_image); |
| q+=GetPixelChannels(image); |
| } |
| if (SyncAuthenticPixels(image,exception) == MagickFalse) |
| break; |
| } |
| count=ReadBlob(image,length,pixels); |
| } |
| if (image->previous == (Image *) NULL) |
| { |
| status=SetImageProgress(image,LoadImageTag,1,5); |
| if (status == MagickFalse) |
| break; |
| } |
| for (y=0; y < (ssize_t) image->extract_info.height; y++) |
| { |
| if (count != (ssize_t) length) |
| { |
| ThrowFileException(exception,CorruptImageError, |
| "UnexpectedEndOfFile",image->filename); |
| break; |
| } |
| q=GetAuthenticPixels(canvas_image,0,0,canvas_image->columns,1, |
| exception); |
| if (q == (Quantum *) NULL) |
| break; |
| length=ImportQuantumPixels(canvas_image,(CacheView *) NULL, |
| quantum_info,GreenQuantum,pixels,exception); |
| if (SyncAuthenticPixels(canvas_image,exception) == MagickFalse) |
| break; |
| if (((y-image->extract_info.y) >= 0) && |
| ((y-image->extract_info.y) < (ssize_t) image->rows)) |
| { |
| p=GetVirtualPixels(canvas_image,canvas_image->extract_info.x,0, |
| canvas_image->columns,1,exception); |
| q=GetAuthenticPixels(image,0,y-image->extract_info.y, |
| image->columns,1,exception); |
| if ((p == (const Quantum *) NULL) || |
| (q == (Quantum *) NULL)) |
| break; |
| for (x=0; x < (ssize_t) image->columns; x++) |
| { |
| SetPixelGreen(image,GetPixelGreen(canvas_image,p),q); |
| p+=GetPixelChannels(canvas_image); |
| q+=GetPixelChannels(image); |
| } |
| if (SyncAuthenticPixels(image,exception) == MagickFalse) |
| break; |
| } |
| count=ReadBlob(image,length,pixels); |
| } |
| if (image->previous == (Image *) NULL) |
| { |
| status=SetImageProgress(image,LoadImageTag,2,5); |
| if (status == MagickFalse) |
| break; |
| } |
| for (y=0; y < (ssize_t) image->extract_info.height; y++) |
| { |
| if (count != (ssize_t) length) |
| { |
| ThrowFileException(exception,CorruptImageError, |
| "UnexpectedEndOfFile",image->filename); |
| break; |
| } |
| q=GetAuthenticPixels(canvas_image,0,0,canvas_image->columns,1, |
| exception); |
| if (q == (Quantum *) NULL) |
| break; |
| length=ImportQuantumPixels(canvas_image,(CacheView *) NULL, |
| quantum_info,BlueQuantum,pixels,exception); |
| if (SyncAuthenticPixels(canvas_image,exception) == MagickFalse) |
| break; |
| if (((y-image->extract_info.y) >= 0) && |
| ((y-image->extract_info.y) < (ssize_t) image->rows)) |
| { |
| p=GetVirtualPixels(canvas_image,canvas_image->extract_info.x,0, |
| canvas_image->columns,1,exception); |
| q=GetAuthenticPixels(image,0,y-image->extract_info.y, |
| image->columns,1,exception); |
| if ((p == (const Quantum *) NULL) || |
| (q == (Quantum *) NULL)) |
| break; |
| for (x=0; x < (ssize_t) image->columns; x++) |
| { |
| SetPixelBlue(image,GetPixelBlue(canvas_image,p),q); |
| p+=GetPixelChannels(canvas_image); |
| q+=GetPixelChannels(image); |
| } |
| if (SyncAuthenticPixels(image,exception) == MagickFalse) |
| break; |
| } |
| count=ReadBlob(image,length,pixels); |
| } |
| if (image->previous == (Image *) NULL) |
| { |
| status=SetImageProgress(image,LoadImageTag,3,5); |
| if (status == MagickFalse) |
| break; |
| } |
| if (image->alpha_trait == BlendPixelTrait) |
| { |
| for (y=0; y < (ssize_t) image->extract_info.height; y++) |
| { |
| if (count != (ssize_t) length) |
| { |
| ThrowFileException(exception,CorruptImageError, |
| "UnexpectedEndOfFile",image->filename); |
| break; |
| } |
| q=GetAuthenticPixels(canvas_image,0,0,canvas_image->columns,1, |
| exception); |
| if (q == (Quantum *) NULL) |
| break; |
| length=ImportQuantumPixels(canvas_image,(CacheView *) NULL, |
| quantum_info,AlphaQuantum,pixels,exception); |
| if (SyncAuthenticPixels(canvas_image,exception) == MagickFalse) |
| break; |
| if (((y-image->extract_info.y) >= 0) && |
| ((y-image->extract_info.y) < (ssize_t) image->rows)) |
| { |
| p=GetVirtualPixels(canvas_image, |
| canvas_image->extract_info.x,0,canvas_image->columns,1, |
| exception); |
| q=GetAuthenticPixels(image,0,y-image->extract_info.y, |
| image->columns,1,exception); |
| if ((p == (const Quantum *) NULL) || |
| (q == (Quantum *) NULL)) |
| break; |
| for (x=0; x < (ssize_t) image->columns; x++) |
| { |
| SetPixelAlpha(image,GetPixelAlpha(canvas_image,p),q); |
| p+=GetPixelChannels(canvas_image); |
| q+=GetPixelChannels(image); |
| } |
| if (SyncAuthenticPixels(image,exception) == MagickFalse) |
| break; |
| } |
| count=ReadBlob(image,length,pixels); |
| } |
| if (image->previous == (Image *) NULL) |
| { |
| status=SetImageProgress(image,LoadImageTag,4,5); |
| if (status == MagickFalse) |
| break; |
| } |
| } |
| if (image->previous == (Image *) NULL) |
| { |
| status=SetImageProgress(image,LoadImageTag,5,5); |
| if (status == MagickFalse) |
| break; |
| } |
| break; |
| } |
| case PartitionInterlace: |
| { |
| /* |
| Partition interlacing: YYYYYY..., CbCbCbCbCbCb..., CrCrCrCrCrCr... |
| */ |
| AppendImageFormat("Y",image->filename); |
| status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception); |
| if (status == MagickFalse) |
| { |
| canvas_image=DestroyImageList(canvas_image); |
| image=DestroyImageList(image); |
| return((Image *) NULL); |
| } |
| if (DiscardBlobBytes(image,image->offset) == MagickFalse) |
| ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile", |
| image->filename); |
| length=GetQuantumExtent(canvas_image,quantum_info,RedQuantum); |
| for (i=0; i < (ssize_t) scene; i++) |
| for (y=0; y < (ssize_t) image->extract_info.height; y++) |
| if (ReadBlob(image,length,pixels) != (ssize_t) length) |
| { |
| ThrowFileException(exception,CorruptImageError, |
| "UnexpectedEndOfFile",image->filename); |
| break; |
| } |
| count=ReadBlob(image,length,pixels); |
| for (y=0; y < (ssize_t) image->extract_info.height; y++) |
| { |
| if (count != (ssize_t) length) |
| { |
| ThrowFileException(exception,CorruptImageError, |
| "UnexpectedEndOfFile",image->filename); |
| break; |
| } |
| q=GetAuthenticPixels(canvas_image,0,0,canvas_image->columns,1, |
| exception); |
| if (q == (Quantum *) NULL) |
| break; |
| length=ImportQuantumPixels(canvas_image,(CacheView *) NULL, |
| quantum_info,RedQuantum,pixels,exception); |
| if (SyncAuthenticPixels(canvas_image,exception) == MagickFalse) |
| break; |
| if (((y-image->extract_info.y) >= 0) && |
| ((y-image->extract_info.y) < (ssize_t) image->rows)) |
| { |
| p=GetVirtualPixels(canvas_image,canvas_image->extract_info.x,0, |
| canvas_image->columns,1,exception); |
| q=GetAuthenticPixels(image,0,y-image->extract_info.y, |
| image->columns,1,exception); |
| if ((p == (const Quantum *) NULL) || |
| (q == (Quantum *) NULL)) |
| break; |
| for (x=0; x < (ssize_t) image->columns; x++) |
| { |
| SetPixelRed(image,GetPixelRed(canvas_image,p),q); |
| p+=GetPixelChannels(canvas_image); |
| q+=GetPixelChannels(image); |
| } |
| if (SyncAuthenticPixels(image,exception) == MagickFalse) |
| break; |
| } |
| count=ReadBlob(image,length,pixels); |
| } |
| if (image->previous == (Image *) NULL) |
| { |
| status=SetImageProgress(image,LoadImageTag,1,5); |
| if (status == MagickFalse) |
| break; |
| } |
| (void) CloseBlob(image); |
| AppendImageFormat("Cb",image->filename); |
| status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception); |
| if (status == MagickFalse) |
| { |
| canvas_image=DestroyImageList(canvas_image); |
| image=DestroyImageList(image); |
| return((Image *) NULL); |
| } |
| length=GetQuantumExtent(canvas_image,quantum_info,GreenQuantum); |
| for (i=0; i < (ssize_t) scene; i++) |
| for (y=0; y < (ssize_t) image->extract_info.height; y++) |
| if (ReadBlob(image,length,pixels) != (ssize_t) length) |
| { |
| ThrowFileException(exception,CorruptImageError, |
| "UnexpectedEndOfFile",image->filename); |
| break; |
| } |
| count=ReadBlob(image,length,pixels); |
| for (y=0; y < (ssize_t) image->extract_info.height; y++) |
| { |
| if (count != (ssize_t) length) |
| { |
| ThrowFileException(exception,CorruptImageError, |
| "UnexpectedEndOfFile",image->filename); |
| break; |
| } |
| q=GetAuthenticPixels(canvas_image,0,0,canvas_image->columns,1, |
| exception); |
| if (q == (Quantum *) NULL) |
| break; |
| length=ImportQuantumPixels(canvas_image,(CacheView *) NULL, |
| quantum_info,GreenQuantum,pixels,exception); |
| if (SyncAuthenticPixels(canvas_image,exception) == MagickFalse) |
| break; |
| if (((y-image->extract_info.y) >= 0) && |
| ((y-image->extract_info.y) < (ssize_t) image->rows)) |
| { |
| p=GetVirtualPixels(canvas_image,canvas_image->extract_info.x,0, |
| canvas_image->columns,1,exception); |
| q=GetAuthenticPixels(image,0,y-image->extract_info.y, |
| image->columns,1,exception); |
| if ((p == (const Quantum *) NULL) || |
| (q == (Quantum *) NULL)) |
| break; |
| for (x=0; x < (ssize_t) image->columns; x++) |
| { |
| SetPixelGreen(image,GetPixelGreen(canvas_image,p),q); |
| p+=GetPixelChannels(canvas_image); |
| q+=GetPixelChannels(image); |
| } |
| if (SyncAuthenticPixels(image,exception) == MagickFalse) |
| break; |
| } |
| count=ReadBlob(image,length,pixels); |
| } |
| if (image->previous == (Image *) NULL) |
| { |
| status=SetImageProgress(image,LoadImageTag,2,5); |
| if (status == MagickFalse) |
| break; |
| } |
| (void) CloseBlob(image); |
| AppendImageFormat("Cr",image->filename); |
| status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception); |
| if (status == MagickFalse) |
| { |
| canvas_image=DestroyImageList(canvas_image); |
| image=DestroyImageList(image); |
| return((Image *) NULL); |
| } |
| length=GetQuantumExtent(canvas_image,quantum_info,BlueQuantum); |
| for (i=0; i < (ssize_t) scene; i++) |
| for (y=0; y < (ssize_t) image->extract_info.height; y++) |
| if (ReadBlob(image,length,pixels) != (ssize_t) length) |
| { |
| ThrowFileException(exception,CorruptImageError, |
| "UnexpectedEndOfFile",image->filename); |
| break; |
| } |
| count=ReadBlob(image,length,pixels); |
| for (y=0; y < (ssize_t) image->extract_info.height; y++) |
| { |
| if (count != (ssize_t) length) |
| { |
| ThrowFileException(exception,CorruptImageError, |
| "UnexpectedEndOfFile",image->filename); |
| break; |
| } |
| q=GetAuthenticPixels(canvas_image,0,0,canvas_image->columns,1, |
| exception); |
| if (q == (Quantum *) NULL) |
| break; |
| length=ImportQuantumPixels(canvas_image,(CacheView *) NULL, |
| quantum_info,BlueQuantum,pixels,exception); |
| if (SyncAuthenticPixels(canvas_image,exception) == MagickFalse) |
| break; |
| if (((y-image->extract_info.y) >= 0) && |
| ((y-image->extract_info.y) < (ssize_t) image->rows)) |
| { |
| p=GetVirtualPixels(canvas_image,canvas_image->extract_info.x,0, |
| canvas_image->columns,1,exception); |
| q=GetAuthenticPixels(image,0,y-image->extract_info.y, |
| image->columns,1,exception); |
| if ((p == (const Quantum *) NULL) || |
| (q == (Quantum *) NULL)) |
| break; |
| for (x=0; x < (ssize_t) image->columns; x++) |
| { |
| SetPixelBlue(image,GetPixelBlue(canvas_image,p),q); |
| p+=GetPixelChannels(canvas_image); |
| q+=GetPixelChannels(image); |
| } |
| if (SyncAuthenticPixels(image,exception) == MagickFalse) |
| break; |
| } |
| count=ReadBlob(image,length,pixels); |
| } |
| if (image->previous == (Image *) NULL) |
| { |
| status=SetImageProgress(image,LoadImageTag,3,5); |
| if (status == MagickFalse) |
| break; |
| } |
| if (image->alpha_trait == BlendPixelTrait) |
| { |
| (void) CloseBlob(image); |
| AppendImageFormat("A",image->filename); |
| status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception); |
| if (status == MagickFalse) |
| { |
| canvas_image=DestroyImageList(canvas_image); |
| image=DestroyImageList(image); |
| return((Image *) NULL); |
| } |
| length=GetQuantumExtent(canvas_image,quantum_info,AlphaQuantum); |
| for (i=0; i < (ssize_t) scene; i++) |
| for (y=0; y < (ssize_t) image->extract_info.height; y++) |
| if (ReadBlob(image,length,pixels) != (ssize_t) length) |
| { |
| ThrowFileException(exception,CorruptImageError, |
| "UnexpectedEndOfFile",image->filename); |
| break; |
| } |
| count=ReadBlob(image,length,pixels); |
| for (y=0; y < (ssize_t) image->extract_info.height; y++) |
| { |
| if (count != (ssize_t) length) |
| { |
| ThrowFileException(exception,CorruptImageError, |
| "UnexpectedEndOfFile",image->filename); |
| break; |
| } |
| q=GetAuthenticPixels(canvas_image,0,0,canvas_image->columns,1, |
| exception); |
| if (q == (Quantum *) NULL) |
| break; |
| length=ImportQuantumPixels(canvas_image,(CacheView *) NULL, |
| quantum_info,BlueQuantum,pixels,exception); |
| if (SyncAuthenticPixels(canvas_image,exception) == MagickFalse) |
| break; |
| if (((y-image->extract_info.y) >= 0) && |
| ((y-image->extract_info.y) < (ssize_t) image->rows)) |
| { |
| p=GetVirtualPixels(canvas_image, |
| canvas_image->extract_info.x,0,canvas_image->columns,1, |
| exception); |
| q=GetAuthenticPixels(image,0,y-image->extract_info.y, |
| image->columns,1,exception); |
| if ((p == (const Quantum *) NULL) || |
| (q == (Quantum *) NULL)) |
| break; |
| for (x=0; x < (ssize_t) image->columns; x++) |
| { |
| SetPixelAlpha(image,GetPixelAlpha(canvas_image,p),q); |
| p+=GetPixelChannels(canvas_image); |
| q+=GetPixelChannels(image); |
| } |
| if (SyncAuthenticPixels(image,exception) == MagickFalse) |
| break; |
| } |
| count=ReadBlob(image,length,pixels); |
| } |
| if (image->previous == (Image *) NULL) |
| { |
| status=SetImageProgress(image,LoadImageTag,4,5); |
| if (status == MagickFalse) |
| break; |
| } |
| } |
| if (image->previous == (Image *) NULL) |
| { |
| status=SetImageProgress(image,LoadImageTag,5,5); |
| if (status == MagickFalse) |
| break; |
| } |
| break; |
| } |
| } |
| SetQuantumImageType(image,quantum_type); |
| /* |
| Proceed to next image. |
| */ |
| if (image_info->number_scenes != 0) |
| if (image->scene >= (image_info->scene+image_info->number_scenes-1)) |
| break; |
| if (count == (ssize_t) length) |
| { |
| /* |
| Allocate next image structure. |
| */ |
| AcquireNextImage(image_info,image,exception); |
| if (GetNextImageInList(image) == (Image *) NULL) |
| { |
| image=DestroyImageList(image); |
| return((Image *) NULL); |
| } |
| image=SyncNextImageInList(image); |
| status=SetImageProgress(image,LoadImagesTag,TellBlob(image), |
| GetBlobSize(image)); |
| if (status == MagickFalse) |
| break; |
| } |
| scene++; |
| } while (count == (ssize_t) length); |
| quantum_info=DestroyQuantumInfo(quantum_info); |
| canvas_image=DestroyImage(canvas_image); |
| (void) CloseBlob(image); |
| return(GetFirstImageInList(image)); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % R e g i s t e r Y C b C r I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % RegisterYCBCRImage() adds attributes for the YCbCr or YCbCrA 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 RegisterYCBCRImage method is: |
| % |
| % size_t RegisterYCBCRImage(void) |
| % |
| */ |
| ModuleExport size_t RegisterYCBCRImage(void) |
| { |
| MagickInfo |
| *entry; |
| |
| entry=SetMagickInfo("YCbCr"); |
| entry->decoder=(DecodeImageHandler *) ReadYCBCRImage; |
| entry->encoder=(EncodeImageHandler *) WriteYCBCRImage; |
| entry->raw=MagickTrue; |
| entry->endian_support=MagickTrue; |
| entry->description=ConstantString("Raw Y, Cb, and Cr samples"); |
| entry->module=ConstantString("YCbCr"); |
| (void) RegisterMagickInfo(entry); |
| entry=SetMagickInfo("YCbCrA"); |
| entry->decoder=(DecodeImageHandler *) ReadYCBCRImage; |
| entry->encoder=(EncodeImageHandler *) WriteYCBCRImage; |
| entry->raw=MagickTrue; |
| entry->endian_support=MagickTrue; |
| entry->description=ConstantString("Raw Y, Cb, Cr, and alpha samples"); |
| entry->module=ConstantString("YCbCr"); |
| (void) RegisterMagickInfo(entry); |
| return(MagickImageCoderSignature); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % U n r e g i s t e r Y C b C r I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % UnregisterYCBCRImage() removes format registrations made by the |
| % YCbCr module from the list of supported formats. |
| % |
| % The format of the UnregisterYCBCRImage method is: |
| % |
| % UnregisterYCBCRImage(void) |
| % |
| */ |
| ModuleExport void UnregisterYCBCRImage(void) |
| { |
| (void) UnregisterMagickInfo("YCbCr"); |
| (void) UnregisterMagickInfo("YCbCrA"); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % W r i t e Y C b C r I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % WriteYCBCRImage() writes an image to a file in the YCbCr or YCbCrA |
| % rasterfile format. |
| % |
| % The format of the WriteYCBCRImage method is: |
| % |
| % MagickBooleanType WriteYCBCRImage(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 WriteYCBCRImage(const ImageInfo *image_info, |
| Image *image,ExceptionInfo *exception) |
| { |
| MagickBooleanType |
| status; |
| |
| MagickOffsetType |
| scene; |
| |
| QuantumInfo |
| *quantum_info; |
| |
| QuantumType |
| quantum_type; |
| |
| register const Quantum |
| *p; |
| |
| size_t |
| length; |
| |
| ssize_t |
| count, |
| y; |
| |
| unsigned char |
| *pixels; |
| |
| /* |
| Allocate memory for pixels. |
| */ |
| 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); |
| if (image_info->interlace != PartitionInterlace) |
| { |
| /* |
| Open output image file. |
| */ |
| assert(exception != (ExceptionInfo *) NULL); |
| assert(exception->signature == MagickSignature); |
| status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception); |
| if (status == MagickFalse) |
| return(status); |
| } |
| quantum_type=RGBQuantum; |
| if (LocaleCompare(image_info->magick,"YCbCrA") == 0) |
| { |
| quantum_type=RGBAQuantum; |
| image->alpha_trait=BlendPixelTrait; |
| } |
| scene=0; |
| do |
| { |
| /* |
| Convert MIFF to YCbCr raster pixels. |
| */ |
| if (image->colorspace != YCbCrColorspace) |
| (void) TransformImageColorspace(image,YCbCrColorspace,exception); |
| if ((LocaleCompare(image_info->magick,"YCbCrA") == 0) && |
| (image->alpha_trait != BlendPixelTrait)) |
| (void) SetImageAlphaChannel(image,OpaqueAlphaChannel,exception); |
| quantum_info=AcquireQuantumInfo(image_info,image); |
| if (quantum_info == (QuantumInfo *) NULL) |
| ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed"); |
| pixels=GetQuantumPixels(quantum_info); |
| switch (image_info->interlace) |
| { |
| case NoInterlace: |
| default: |
| { |
| /* |
| No interlacing: YCbCrYCbCrYCbCrYCbCrYCbCrYCbCr... |
| */ |
| 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); |
| count=WriteBlob(image,length,pixels); |
| if (count != (ssize_t) length) |
| break; |
| if (image->previous == (Image *) NULL) |
| { |
| status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y, |
| image->rows); |
| if (status == MagickFalse) |
| break; |
| } |
| } |
| break; |
| } |
| case LineInterlace: |
| { |
| /* |
| Line interlacing: YYY...CbCbCb...CrCrCr...YYY...CbCbCb...CrCrCr... |
| */ |
| 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, |
| RedQuantum,pixels,exception); |
| count=WriteBlob(image,length,pixels); |
| if (count != (ssize_t) length) |
| break; |
| length=ExportQuantumPixels(image,(CacheView *) NULL,quantum_info, |
| GreenQuantum,pixels,exception); |
| count=WriteBlob(image,length,pixels); |
| if (count != (ssize_t) length) |
| break; |
| length=ExportQuantumPixels(image,(CacheView *) NULL,quantum_info, |
| BlueQuantum,pixels,exception); |
| count=WriteBlob(image,length,pixels); |
| if (count != (ssize_t) length) |
| break; |
| if (quantum_type == RGBAQuantum) |
| { |
| length=ExportQuantumPixels(image,(CacheView *) NULL,quantum_info, |
| AlphaQuantum,pixels,exception); |
| count=WriteBlob(image,length,pixels); |
| if (count != (ssize_t) length) |
| break; |
| } |
| if (image->previous == (Image *) NULL) |
| { |
| status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y, |
| image->rows); |
| if (status == MagickFalse) |
| break; |
| } |
| } |
| break; |
| } |
| case PlaneInterlace: |
| { |
| /* |
| Plane interlacing: YYYYYY...CbCbCbCbCbCb...CrCrCrCrCrCr... |
| */ |
| 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, |
| RedQuantum,pixels,exception); |
| count=WriteBlob(image,length,pixels); |
| if (count != (ssize_t) length) |
| break; |
| } |
| if (image->previous == (Image *) NULL) |
| { |
| status=SetImageProgress(image,SaveImageTag,1,5); |
| if (status == MagickFalse) |
| break; |
| } |
| 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, |
| GreenQuantum,pixels,exception); |
| count=WriteBlob(image,length,pixels); |
| if (count != (ssize_t) length) |
| break; |
| } |
| if (image->previous == (Image *) NULL) |
| { |
| status=SetImageProgress(image,SaveImageTag,2,5); |
| if (status == MagickFalse) |
| break; |
| } |
| 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, |
| BlueQuantum,pixels,exception); |
| count=WriteBlob(image,length,pixels); |
| if (count != (ssize_t) length) |
| break; |
| } |
| if (image->previous == (Image *) NULL) |
| { |
| status=SetImageProgress(image,SaveImageTag,3,5); |
| if (status == MagickFalse) |
| break; |
| } |
| if (quantum_type == RGBAQuantum) |
| { |
| 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, |
| AlphaQuantum,pixels,exception); |
| count=WriteBlob(image,length,pixels); |
| if (count != (ssize_t) length) |
| break; |
| } |
| } |
| if (image_info->interlace == PartitionInterlace) |
| (void) CopyMagickString(image->filename,image_info->filename, |
| MaxTextExtent); |
| if (image->previous == (Image *) NULL) |
| { |
| status=SetImageProgress(image,SaveImageTag,5,5); |
| if (status == MagickFalse) |
| break; |
| } |
| break; |
| } |
| case PartitionInterlace: |
| { |
| /* |
| Partition interlacing: YYYYYY..., CbCbCbCbCbCb..., CrCrCrCrCrCr... |
| */ |
| AppendImageFormat("Y",image->filename); |
| status=OpenBlob(image_info,image,scene == 0 ? WriteBinaryBlobMode : |
| AppendBinaryBlobMode,exception); |
| if (status == MagickFalse) |
| return(status); |
| 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, |
| RedQuantum,pixels,exception); |
| count=WriteBlob(image,length,pixels); |
| if (count != (ssize_t) length) |
| break; |
| } |
| if (image->previous == (Image *) NULL) |
| { |
| status=SetImageProgress(image,SaveImageTag,1,5); |
| if (status == MagickFalse) |
| break; |
| } |
| (void) CloseBlob(image); |
| AppendImageFormat("Cb",image->filename); |
| status=OpenBlob(image_info,image,scene == 0 ? WriteBinaryBlobMode : |
| AppendBinaryBlobMode,exception); |
| if (status == MagickFalse) |
| return(status); |
| 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, |
| GreenQuantum,pixels,exception); |
| count=WriteBlob(image,length,pixels); |
| if (count != (ssize_t) length) |
| break; |
| } |
| if (image->previous == (Image *) NULL) |
| { |
| status=SetImageProgress(image,SaveImageTag,2,5); |
| if (status == MagickFalse) |
| break; |
| } |
| (void) CloseBlob(image); |
| AppendImageFormat("Cr",image->filename); |
| status=OpenBlob(image_info,image,scene == 0 ? WriteBinaryBlobMode : |
| AppendBinaryBlobMode,exception); |
| if (status == MagickFalse) |
| return(status); |
| 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, |
| BlueQuantum,pixels,exception); |
| count=WriteBlob(image,length,pixels); |
| if (count != (ssize_t) length) |
| break; |
| } |
| if (image->previous == (Image *) NULL) |
| { |
| status=SetImageProgress(image,SaveImageTag,3,5); |
| if (status == MagickFalse) |
| break; |
| } |
| if (quantum_type == RGBAQuantum) |
| { |
| (void) CloseBlob(image); |
| AppendImageFormat("A",image->filename); |
| status=OpenBlob(image_info,image,scene == 0 ? WriteBinaryBlobMode : |
| AppendBinaryBlobMode,exception); |
| if (status == MagickFalse) |
| return(status); |
| 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, |
| AlphaQuantum,pixels,exception); |
| count=WriteBlob(image,length,pixels); |
| if (count != (ssize_t) length) |
| break; |
| } |
| if (image->previous == (Image *) NULL) |
| { |
| status=SetImageProgress(image,SaveImageTag,4,5); |
| if (status == MagickFalse) |
| break; |
| } |
| } |
| (void) CloseBlob(image); |
| (void) CopyMagickString(image->filename,image_info->filename, |
| MaxTextExtent); |
| if (image->previous == (Image *) NULL) |
| { |
| status=SetImageProgress(image,SaveImageTag,5,5); |
| if (status == MagickFalse) |
| break; |
| } |
| break; |
| } |
| } |
| quantum_info=DestroyQuantumInfo(quantum_info); |
| if (GetNextImageInList(image) == (Image *) NULL) |
| break; |
| image=SyncNextImageInList(image); |
| status=SetImageProgress(image,SaveImagesTag,scene++, |
| GetImageListLength(image)); |
| if (status == MagickFalse) |
| break; |
| } while (image_info->adjoin != MagickFalse); |
| (void) CloseBlob(image); |
| return(MagickTrue); |
| } |