145   if ((image->columns == 0) || (image->rows == 0))  in ReadYUVImage()
147   status=SetImageExtent(image,image->columns,image->rows,exception);  in ReadYUVImage()
198       image->columns+2UL),(size_t) quantum*sizeof(*scanline));  in ReadYUVImage()
200     scanline=(unsigned char *) AcquireQuantumMemory(image->columns,  in ReadYUVImage()
207     chroma_image=CloneImage(image,(image->columns+horizontal_factor-1)/  in ReadYUVImage()
221     status=SetImageExtent(image,image->columns,image->rows,exception);  in ReadYUVImage()
244               length=2*quantum*image->columns;  in ReadYUVImage()
255           q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);  in ReadYUVImage()
259             chroma_image->columns,1,exception);  in ReadYUVImage()
262           for (x=0; x < (ssize_t) image->columns; x+=2)  in ReadYUVImage()
309               length=quantum*image->columns;  in ReadYUVImage()
320           q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);  in ReadYUVImage()
323           for (x=0; x < (ssize_t) image->columns; x++)  in ReadYUVImage()
366           length=quantum*chroma_image->columns;  in ReadYUVImage()
376           q=QueueAuthenticPixels(chroma_image,0,y,chroma_image->columns,1,  in ReadYUVImage()
380           for (x=0; x < (ssize_t) chroma_image->columns; x++)  in ReadYUVImage()
411         length=quantum*chroma_image->columns;  in ReadYUVImage()
421         q=GetAuthenticPixels(chroma_image,0,y,chroma_image->columns,1,  in ReadYUVImage()
425         for (x=0; x < (ssize_t) chroma_image->columns; x++)  in ReadYUVImage()
444     resize_image=ResizeImage(chroma_image,image->columns,image->rows,  in ReadYUVImage()
457       q=GetAuthenticPixels(image,0,y,image->columns,1,exception);  in ReadYUVImage()
458       chroma_pixels=GetVirtualPixels(resize_image,0,y,resize_image->columns,1,  in ReadYUVImage()
463       for (x=0; x < (ssize_t) image->columns; x++)  in ReadYUVImage()
492       count=ReadBlob(image,(size_t) (2*quantum*image->columns),scanline);  in ReadYUVImage()
494       count=ReadBlob(image,(size_t) quantum*image->columns,scanline);  in ReadYUVImage()
702     width=image->columns+(image->columns & (horizontal_factor-1));  in WriteYUVImage()
729           p=GetVirtualPixels(yuv_image,0,y,yuv_image->columns,1,exception);  in WriteYUVImage()
732           s=GetVirtualPixels(chroma_image,0,y,chroma_image->columns,1,  in WriteYUVImage()
736           for (x=0; x < (ssize_t) yuv_image->columns; x+=2)  in WriteYUVImage()
782           p=GetVirtualPixels(yuv_image,0,y,yuv_image->columns,1,exception);  in WriteYUVImage()
785           for (x=0; x < (ssize_t) yuv_image->columns; x++)  in WriteYUVImage()
823           p=GetVirtualPixels(chroma_image,0,y,chroma_image->columns,1,  in WriteYUVImage()
827           for (x=0; x < (ssize_t) chroma_image->columns; x++)  in WriteYUVImage()
857           p=GetVirtualPixels(chroma_image,0,y,chroma_image->columns,1,  in WriteYUVImage()
861           for (x=0; x < (ssize_t) chroma_image->columns; x++)  in WriteYUVImage()