/* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % 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 % % Cristy % % July 1992 % % % % % % Copyright 1999-2021 ImageMagick Studio LLC, a non-profit organization % % dedicated to making software imaging solutions freely available. % % % % You may not use this file except in compliance with the License. You may % % obtain a copy of the License at % % % % https://imagemagick.org/script/license.php % % % % Unless required by applicable law or agreed to in writing, software % % distributed under the License is distributed on an "AS IS" BASIS, % % WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. % % See the License for the specific language governing permissions and % % limitations under the License. % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % */ /* Include declarations. */ #include "magick/studio.h" #include "magick/blob.h" #include "magick/blob-private.h" #include "magick/cache.h" #include "magick/channel.h" #include "magick/colorspace.h" #include "magick/constitute.h" #include "magick/exception.h" #include "magick/exception-private.h" #include "magick/image.h" #include "magick/image-private.h" #include "magick/list.h" #include "magick/magick.h" #include "magick/memory_.h" #include "magick/monitor.h" #include "magick/monitor-private.h" #include "magick/pixel-accessor.h" #include "magick/pixel-private.h" #include "magick/quantum-private.h" #include "magick/static.h" #include "magick/statistic.h" #include "magick/string_.h" #include "magick/module.h" #include "magick/utility.h" /* Forward declarations. */ static MagickBooleanType WriteYCBCRImage(const ImageInfo *,Image *); /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % 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) { const void *stream; Image *canvas_image, *image; MagickBooleanType status; MagickOffsetType scene; QuantumInfo *quantum_info; QuantumType quantum_type; ssize_t i; size_t length; ssize_t count, y; unsigned char *pixels; /* Open image file. */ 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); if ((image->columns == 0) || (image->rows == 0)) ThrowReaderException(OptionError,"MustSpecifyImageSize"); status=SetImageExtent(image,image->columns,image->rows); if (status == MagickFalse) { InheritException(exception,&image->exception); return(DestroyImageList(image)); } (void) SetImageColorspace(image,YCbCrColorspace); if (image_info->interlace != PartitionInterlace) { 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); } /* Create virtual canvas to support cropping (i.e. image.rgb[100x100+10+20]). */ canvas_image=CloneImage(image,image->extract_info.width,1,MagickFalse, exception); if (canvas_image == (Image *) NULL) ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); (void) SetImageVirtualPixelMethod(canvas_image,BlackVirtualPixelMethod); quantum_info=AcquireQuantumInfo(image_info,canvas_image); if (quantum_info == (QuantumInfo *) NULL) { canvas_image=DestroyImage(canvas_image); ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); } quantum_type=RGBQuantum; if (LocaleCompare(image_info->magick,"YCbCrA") == 0) { quantum_type=RGBAQuantum; image->matte=MagickTrue; } pixels=GetQuantumPixels(quantum_info); 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++) { stream=ReadBlobStream(image,length,pixels,&count); if (count != (ssize_t) length) break; } } count=0; length=0; scene=0; status=MagickTrue; stream=NULL; 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; status=SetImageExtent(image,image->columns,image->rows); if (status == MagickFalse) break; if (SetImageColorspace(image,YCbCrColorspace) == MagickFalse) break; switch (image_info->interlace) { case NoInterlace: default: { /* No interlacing: YCbCrYCbCrYCbCrYCbCrYCbCrYCbCr... */ if (scene == 0) { length=GetQuantumExtent(canvas_image,quantum_info,quantum_type); stream=ReadBlobStream(image,length,pixels,&count); if (count != (ssize_t) length) break; } for (y=0; y < (ssize_t) image->extract_info.height; y++) { const PixelPacket *magick_restrict p; PixelPacket *magick_restrict q; ssize_t x; if (count != (ssize_t) length) { status=MagickFalse; ThrowFileException(exception,CorruptImageError, "UnexpectedEndOfFile",image->filename); break; } q=GetAuthenticPixels(canvas_image,0,0,canvas_image->columns,1, exception); if (q == (PixelPacket *) NULL) break; length=ImportQuantumPixels(canvas_image,(CacheView *) NULL, quantum_info,quantum_type,(unsigned char *) stream,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 PixelPacket *) NULL) || (q == (PixelPacket *) NULL)) break; for (x=0; x < (ssize_t) image->columns; x++) { SetPixelRed(q,GetPixelRed(p)); SetPixelGreen(q,GetPixelGreen(p)); SetPixelBlue(q,GetPixelBlue(p)); if (image->matte != MagickFalse) SetPixelOpacity(q,GetPixelOpacity(p)); p++; q++; } if (SyncAuthenticPixels(image,exception) == MagickFalse) break; } if (image->previous == (Image *) NULL) { status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y, image->rows); if (status == MagickFalse) break; } stream=ReadBlobStream(image,length,pixels,&count); } 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); stream=ReadBlobStream(image,length,pixels,&count); } for (y=0; y < (ssize_t) image->extract_info.height; y++) { for (i=0; i < (ssize_t) (image->matte != MagickFalse ? 4 : 3); i++) { const PixelPacket *magick_restrict p; PixelPacket *magick_restrict q; ssize_t x; if (count != (ssize_t) length) { status=MagickFalse; 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 == (PixelPacket *) NULL) break; length=ImportQuantumPixels(canvas_image,(CacheView *) NULL, quantum_info,quantum_type,(unsigned char *) stream,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 PixelPacket *) NULL) || (q == (PixelPacket *) NULL)) break; for (x=0; x < (ssize_t) image->columns; x++) { switch (quantum_type) { case RedQuantum: { SetPixelRed(q,GetPixelRed(p)); break; } case GreenQuantum: { SetPixelGreen(q,GetPixelGreen(p)); break; } case BlueQuantum: { SetPixelBlue(q,GetPixelBlue(p)); break; } case OpacityQuantum: { SetPixelOpacity(q,GetPixelOpacity(p)); break; } default: break; } p++; q++; } if (SyncAuthenticPixels(image,exception) == MagickFalse) break; } stream=ReadBlobStream(image,length,pixels,&count); } 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); stream=ReadBlobStream(image,length,pixels,&count); } for (y=0; y < (ssize_t) image->extract_info.height; y++) { const PixelPacket *magick_restrict p; PixelPacket *magick_restrict q; ssize_t x; if (count != (ssize_t) length) { status=MagickFalse; ThrowFileException(exception,CorruptImageError, "UnexpectedEndOfFile",image->filename); break; } q=GetAuthenticPixels(canvas_image,0,0,canvas_image->columns,1, exception); if (q == (PixelPacket *) NULL) break; length=ImportQuantumPixels(canvas_image,(CacheView *) NULL, quantum_info,RedQuantum,(unsigned char *) stream,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 PixelPacket *) NULL) || (q == (PixelPacket *) NULL)) break; for (x=0; x < (ssize_t) image->columns; x++) { SetPixelRed(q,GetPixelRed(p)); p++; q++; } if (SyncAuthenticPixels(image,exception) == MagickFalse) break; } stream=ReadBlobStream(image,length,pixels,&count); } 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++) { const PixelPacket *magick_restrict p; PixelPacket *magick_restrict q; ssize_t x; if (count != (ssize_t) length) { status=MagickFalse; ThrowFileException(exception,CorruptImageError, "UnexpectedEndOfFile",image->filename); break; } q=GetAuthenticPixels(canvas_image,0,0,canvas_image->columns,1, exception); if (q == (PixelPacket *) NULL) break; length=ImportQuantumPixels(canvas_image,(CacheView *) NULL, quantum_info,GreenQuantum,(unsigned char *) stream,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 PixelPacket *) NULL) || (q == (PixelPacket *) NULL)) break; for (x=0; x < (ssize_t) image->columns; x++) { SetPixelGreen(q,GetPixelGreen(p)); p++; q++; } if (SyncAuthenticPixels(image,exception) == MagickFalse) break; } stream=ReadBlobStream(image,length,pixels,&count); } 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++) { const PixelPacket *magick_restrict p; PixelPacket *magick_restrict q; ssize_t x; if (count != (ssize_t) length) { status=MagickFalse; ThrowFileException(exception,CorruptImageError, "UnexpectedEndOfFile",image->filename); break; } q=GetAuthenticPixels(canvas_image,0,0,canvas_image->columns,1, exception); if (q == (PixelPacket *) NULL) break; length=ImportQuantumPixels(canvas_image,(CacheView *) NULL, quantum_info,BlueQuantum,(unsigned char *) stream,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 PixelPacket *) NULL) || (q == (PixelPacket *) NULL)) break; for (x=0; x < (ssize_t) image->columns; x++) { SetPixelBlue(q,GetPixelBlue(p)); p++; q++; } if (SyncAuthenticPixels(image,exception) == MagickFalse) break; } stream=ReadBlobStream(image,length,pixels,&count); } if (image->previous == (Image *) NULL) { status=SetImageProgress(image,LoadImageTag,3,5); if (status == MagickFalse) break; } if (image->matte != MagickFalse) { for (y=0; y < (ssize_t) image->extract_info.height; y++) { const PixelPacket *magick_restrict p; PixelPacket *magick_restrict q; ssize_t x; if (count != (ssize_t) length) { status=MagickFalse; ThrowFileException(exception,CorruptImageError, "UnexpectedEndOfFile",image->filename); break; } q=GetAuthenticPixels(canvas_image,0,0,canvas_image->columns,1, exception); if (q == (PixelPacket *) NULL) break; length=ImportQuantumPixels(canvas_image,(CacheView *) NULL, quantum_info,AlphaQuantum,(unsigned char *) stream,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 PixelPacket *) NULL) || (q == (PixelPacket *) NULL)) break; for (x=0; x < (ssize_t) image->columns; x++) { SetPixelOpacity(q,GetPixelOpacity(p)); p++; q++; } if (SyncAuthenticPixels(image,exception) == MagickFalse) break; } stream=ReadBlobStream(image,length,pixels,&count); } 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) break; if (DiscardBlobBytes(image,(MagickSizeType) image->offset) == MagickFalse) { status=MagickFalse; ThrowFileException(exception,CorruptImageError, "UnexpectedEndOfFile",image->filename); break; } 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++) { (void) ReadBlobStream(image,length,GetQuantumPixels(quantum_info), &count); if (count != (ssize_t) length) break; } if (count != (ssize_t) length) break; } stream=ReadBlobStream(image,length,pixels,&count); for (y=0; y < (ssize_t) image->extract_info.height; y++) { const PixelPacket *magick_restrict p; PixelPacket *magick_restrict q; ssize_t x; if (count != (ssize_t) length) { status=MagickFalse; ThrowFileException(exception,CorruptImageError, "UnexpectedEndOfFile",image->filename); break; } q=GetAuthenticPixels(canvas_image,0,0,canvas_image->columns,1, exception); if (q == (PixelPacket *) NULL) break; length=ImportQuantumPixels(canvas_image,(CacheView *) NULL, quantum_info,RedQuantum,(unsigned char *) stream,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 PixelPacket *) NULL) || (q == (PixelPacket *) NULL)) break; for (x=0; x < (ssize_t) image->columns; x++) { SetPixelRed(q,GetPixelRed(p)); p++; q++; } if (SyncAuthenticPixels(image,exception) == MagickFalse) break; } stream=ReadBlobStream(image,length,pixels,&count); } 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) break; 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++) { (void) ReadBlobStream(image,length,GetQuantumPixels(quantum_info), &count); if (count != (ssize_t) length) break; } if (count != (ssize_t) length) break; } stream=ReadBlobStream(image,length,pixels,&count); for (y=0; y < (ssize_t) image->extract_info.height; y++) { const PixelPacket *magick_restrict p; PixelPacket *magick_restrict q; ssize_t x; if (count != (ssize_t) length) { status=MagickFalse; ThrowFileException(exception,CorruptImageError, "UnexpectedEndOfFile",image->filename); break; } q=GetAuthenticPixels(canvas_image,0,0,canvas_image->columns,1, exception); if (q == (PixelPacket *) NULL) break; length=ImportQuantumPixels(canvas_image,(CacheView *) NULL, quantum_info,GreenQuantum,(unsigned char *) stream,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 PixelPacket *) NULL) || (q == (PixelPacket *) NULL)) break; for (x=0; x < (ssize_t) image->columns; x++) { SetPixelGreen(q,GetPixelGreen(p)); p++; q++; } if (SyncAuthenticPixels(image,exception) == MagickFalse) break; } stream=ReadBlobStream(image,length,pixels,&count); } 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) break; 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++) { (void) ReadBlobStream(image,length,GetQuantumPixels(quantum_info), &count); if (count != (ssize_t) length) break; } if (count != (ssize_t) length) break; } stream=ReadBlobStream(image,length,pixels,&count); for (y=0; y < (ssize_t) image->extract_info.height; y++) { const PixelPacket *magick_restrict p; PixelPacket *magick_restrict q; ssize_t x; if (count != (ssize_t) length) { status=MagickFalse; ThrowFileException(exception,CorruptImageError, "UnexpectedEndOfFile",image->filename); break; } q=GetAuthenticPixels(canvas_image,0,0,canvas_image->columns,1, exception); if (q == (PixelPacket *) NULL) break; length=ImportQuantumPixels(canvas_image,(CacheView *) NULL, quantum_info,BlueQuantum,(unsigned char *) stream,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 PixelPacket *) NULL) || (q == (PixelPacket *) NULL)) break; for (x=0; x < (ssize_t) image->columns; x++) { SetPixelBlue(q,GetPixelBlue(p)); p++; q++; } if (SyncAuthenticPixels(image,exception) == MagickFalse) break; } stream=ReadBlobStream(image,length,pixels,&count); } if (image->previous == (Image *) NULL) { status=SetImageProgress(image,LoadImageTag,3,5); if (status == MagickFalse) break; } if (image->matte != MagickFalse) { (void) CloseBlob(image); AppendImageFormat("A",image->filename); status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception); if (status == MagickFalse) break; 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++) { (void) ReadBlobStream(image,length,GetQuantumPixels( quantum_info),&count); if (count != (ssize_t) length) break; } if (count != (ssize_t) length) break; } stream=ReadBlobStream(image,length,pixels,&count); for (y=0; y < (ssize_t) image->extract_info.height; y++) { const PixelPacket *magick_restrict p; PixelPacket *magick_restrict q; ssize_t x; if (count != (ssize_t) length) { status=MagickFalse; ThrowFileException(exception,CorruptImageError, "UnexpectedEndOfFile",image->filename); break; } q=GetAuthenticPixels(canvas_image,0,0,canvas_image->columns,1, exception); if (q == (PixelPacket *) NULL) break; length=ImportQuantumPixels(canvas_image,(CacheView *) NULL, quantum_info,BlueQuantum,(unsigned char *) stream,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 PixelPacket *) NULL) || (q == (PixelPacket *) NULL)) break; for (x=0; x < (ssize_t) image->columns; x++) { SetPixelOpacity(q,GetPixelOpacity(p)); p++; q++; } if (SyncAuthenticPixels(image,exception) == MagickFalse) break; } stream=ReadBlobStream(image,length,pixels,&count); } 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; } } if (status == MagickFalse) 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); if (GetNextImageInList(image) == (Image *) NULL) { status=MagickFalse; break; } 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); InheritException(exception,&canvas_image->exception); canvas_image=DestroyImage(canvas_image); (void) CloseBlob(image); if (status == MagickFalse) return(DestroyImageList(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->magick_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->magick_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) % % A description of each parameter follows. % % o image_info: the image info. % % o image: The image. % */ static MagickBooleanType WriteYCBCRImage(const ImageInfo *image_info, Image *image) { MagickBooleanType status; MagickOffsetType scene; QuantumInfo *quantum_info; QuantumType quantum_type; const PixelPacket *p; size_t imageListLength, length; ssize_t count, y; unsigned char *pixels; /* Allocate memory for pixels. */ 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); if (image_info->interlace != PartitionInterlace) { /* Open output image file. */ status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception); if (status == MagickFalse) return(status); } quantum_type=RGBQuantum; if (LocaleCompare(image_info->magick,"YCbCrA") == 0) { quantum_type=RGBAQuantum; image->matte=MagickTrue; } scene=0; imageListLength=GetImageListLength(image); do { /* Convert MIFF to YCbCr raster pixels. */ if (image->colorspace != YCbCrColorspace) (void) TransformImageColorspace(image,YCbCrColorspace); if ((LocaleCompare(image_info->magick,"YCbCrA") == 0) && (image->matte == MagickFalse)) (void) SetImageAlphaChannel(image,ResetAlphaChannel); 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,&image->exception); if (p == (const PixelPacket *) NULL) break; length=ExportQuantumPixels(image,(const CacheView *) NULL, quantum_info,quantum_type,pixels,&image->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,&image->exception); if (p == (const PixelPacket *) NULL) break; length=ExportQuantumPixels(image,(const CacheView *) NULL, quantum_info,RedQuantum,pixels,&image->exception); count=WriteBlob(image,length,pixels); if (count != (ssize_t) length) break; length=ExportQuantumPixels(image,(const CacheView *) NULL, quantum_info,GreenQuantum,pixels,&image->exception); count=WriteBlob(image,length,pixels); if (count != (ssize_t) length) break; length=ExportQuantumPixels(image,(const CacheView *) NULL, quantum_info,BlueQuantum,pixels,&image->exception); count=WriteBlob(image,length,pixels); if (count != (ssize_t) length) break; if (quantum_type == RGBAQuantum) { length=ExportQuantumPixels(image,(const CacheView *) NULL, quantum_info,AlphaQuantum,pixels,&image->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,&image->exception); if (p == (const PixelPacket *) NULL) break; length=ExportQuantumPixels(image,(const CacheView *) NULL, quantum_info,RedQuantum,pixels,&image->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,&image->exception); if (p == (const PixelPacket *) NULL) break; length=ExportQuantumPixels(image,(const CacheView *) NULL, quantum_info,GreenQuantum,pixels,&image->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,&image->exception); if (p == (const PixelPacket *) NULL) break; length=ExportQuantumPixels(image,(const CacheView *) NULL, quantum_info,BlueQuantum,pixels,&image->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,&image->exception); if (p == (const PixelPacket *) NULL) break; length=ExportQuantumPixels(image,(const CacheView *) NULL, quantum_info,AlphaQuantum,pixels,&image->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,&image->exception); if (status == MagickFalse) return(status); for (y=0; y < (ssize_t) image->rows; y++) { p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception); if (p == (const PixelPacket *) NULL) break; length=ExportQuantumPixels(image,(const CacheView *) NULL, quantum_info,RedQuantum,pixels,&image->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,&image->exception); if (status == MagickFalse) return(status); for (y=0; y < (ssize_t) image->rows; y++) { p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception); if (p == (const PixelPacket *) NULL) break; length=ExportQuantumPixels(image,(const CacheView *) NULL, quantum_info,GreenQuantum,pixels,&image->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,&image->exception); if (status == MagickFalse) return(status); for (y=0; y < (ssize_t) image->rows; y++) { p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception); if (p == (const PixelPacket *) NULL) break; length=ExportQuantumPixels(image,(const CacheView *) NULL, quantum_info,BlueQuantum,pixels,&image->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,&image->exception); if (status == MagickFalse) return(status); for (y=0; y < (ssize_t) image->rows; y++) { p=GetVirtualPixels(image,0,y,image->columns,1, &image->exception); if (p == (const PixelPacket *) NULL) break; length=ExportQuantumPixels(image,(const CacheView *) NULL, quantum_info,AlphaQuantum,pixels,&image->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++,imageListLength); if (status == MagickFalse) break; } while (image_info->adjoin != MagickFalse); (void) CloseBlob(image); return(MagickTrue); }