| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % V V IIIII FFFFF FFFFF % |
| % V V I F F % |
| % V V I FFF FFF % |
| % V V I F F % |
| % V IIIII F F % |
| % % |
| % % |
| % Read/Write Khoros Visualization 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/attribute.h" |
| #include "MagickCore/blob.h" |
| #include "MagickCore/blob-private.h" |
| #include "MagickCore/cache.h" |
| #include "MagickCore/color.h" |
| #include "MagickCore/color-private.h" |
| #include "MagickCore/colormap.h" |
| #include "MagickCore/colormap-private.h" |
| #include "MagickCore/colorspace.h" |
| #include "MagickCore/colorspace-private.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/property.h" |
| #include "MagickCore/quantum-private.h" |
| #include "MagickCore/static.h" |
| #include "MagickCore/string_.h" |
| #include "MagickCore/module.h" |
| |
| /* |
| Forward declarations. |
| */ |
| static MagickBooleanType |
| WriteVIFFImage(const ImageInfo *,Image *,ExceptionInfo *); |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % I s V I F F % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % IsVIFF() returns MagickTrue if the image format type, identified by the |
| % magick string, is VIFF. |
| % |
| % The format of the IsVIFF method is: |
| % |
| % MagickBooleanType IsVIFF(const unsigned char *magick,const size_t length) |
| % |
| % A description of each parameter follows: |
| % |
| % o magick: compare image format pattern against these bytes. |
| % |
| % o length: Specifies the length of the magick string. |
| % |
| */ |
| static MagickBooleanType IsVIFF(const unsigned char *magick,const size_t length) |
| { |
| if (length < 2) |
| return(MagickFalse); |
| if (memcmp(magick,"\253\001",2) == 0) |
| return(MagickTrue); |
| return(MagickFalse); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % R e a d V I F F I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % ReadVIFFImage() reads a Khoros Visualization image file 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 ReadVIFFImage method is: |
| % |
| % Image *ReadVIFFImage(const ImageInfo *image_info, |
| % ExceptionInfo *exception) |
| % |
| % A description of each parameter follows: |
| % |
| % o image: Method ReadVIFFImage returns a pointer to the image after |
| % reading. A null image is returned if there is a memory shortage or if |
| % the image cannot be read. |
| % |
| % o image_info: the image info. |
| % |
| % o exception: return any errors or warnings in this structure. |
| % |
| */ |
| static Image *ReadVIFFImage(const ImageInfo *image_info, |
| ExceptionInfo *exception) |
| { |
| #define VFF_CM_genericRGB 15 |
| #define VFF_CM_ntscRGB 1 |
| #define VFF_CM_NONE 0 |
| #define VFF_DEP_DECORDER 0x4 |
| #define VFF_DEP_NSORDER 0x8 |
| #define VFF_DES_RAW 0 |
| #define VFF_LOC_IMPLICIT 1 |
| #define VFF_MAPTYP_NONE 0 |
| #define VFF_MAPTYP_1_BYTE 1 |
| #define VFF_MAPTYP_2_BYTE 2 |
| #define VFF_MAPTYP_4_BYTE 4 |
| #define VFF_MAPTYP_FLOAT 5 |
| #define VFF_MAPTYP_DOUBLE 7 |
| #define VFF_MS_NONE 0 |
| #define VFF_MS_ONEPERBAND 1 |
| #define VFF_MS_SHARED 3 |
| #define VFF_TYP_BIT 0 |
| #define VFF_TYP_1_BYTE 1 |
| #define VFF_TYP_2_BYTE 2 |
| #define VFF_TYP_4_BYTE 4 |
| #define VFF_TYP_FLOAT 5 |
| #define VFF_TYP_DOUBLE 9 |
| |
| typedef struct _ViffInfo |
| { |
| unsigned char |
| identifier, |
| file_type, |
| release, |
| version, |
| machine_dependency, |
| reserve[3]; |
| |
| char |
| comment[512]; |
| |
| unsigned int |
| rows, |
| columns, |
| subrows; |
| |
| int |
| x_offset, |
| y_offset; |
| |
| float |
| x_bits_per_pixel, |
| y_bits_per_pixel; |
| |
| unsigned int |
| location_type, |
| location_dimension, |
| number_of_images, |
| number_data_bands, |
| data_storage_type, |
| data_encode_scheme, |
| map_scheme, |
| map_storage_type, |
| map_rows, |
| map_columns, |
| map_subrows, |
| map_enable, |
| maps_per_cycle, |
| color_space_model; |
| } ViffInfo; |
| |
| double |
| min_value, |
| scale_factor, |
| value; |
| |
| Image |
| *image; |
| |
| int |
| bit; |
| |
| MagickBooleanType |
| status; |
| |
| MagickSizeType |
| number_pixels; |
| |
| register ssize_t |
| x; |
| |
| register Quantum |
| *q; |
| |
| register ssize_t |
| i; |
| |
| register unsigned char |
| *p; |
| |
| size_t |
| bytes_per_pixel, |
| max_packets, |
| quantum; |
| |
| ssize_t |
| count, |
| y; |
| |
| unsigned char |
| *pixels; |
| |
| unsigned long |
| lsb_first; |
| |
| ViffInfo |
| viff_info; |
| |
| /* |
| 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,exception); |
| status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception); |
| if (status == MagickFalse) |
| { |
| image=DestroyImageList(image); |
| return((Image *) NULL); |
| } |
| /* |
| Read VIFF header (1024 bytes). |
| */ |
| count=ReadBlob(image,1,&viff_info.identifier); |
| do |
| { |
| /* |
| Verify VIFF identifier. |
| */ |
| if ((count != 1) || ((unsigned char) viff_info.identifier != 0xab)) |
| ThrowReaderException(CorruptImageError,"NotAVIFFImage"); |
| /* |
| Initialize VIFF image. |
| */ |
| (void) ReadBlob(image,sizeof(viff_info.file_type),&viff_info.file_type); |
| (void) ReadBlob(image,sizeof(viff_info.release),&viff_info.release); |
| (void) ReadBlob(image,sizeof(viff_info.version),&viff_info.version); |
| (void) ReadBlob(image,sizeof(viff_info.machine_dependency), |
| &viff_info.machine_dependency); |
| (void) ReadBlob(image,sizeof(viff_info.reserve),viff_info.reserve); |
| count=ReadBlob(image,512,(unsigned char *) viff_info.comment); |
| if (count != 512) |
| ThrowReaderException(CorruptImageError,"ImproperImageHeader"); |
| viff_info.comment[511]='\0'; |
| if (strlen(viff_info.comment) > 4) |
| (void) SetImageProperty(image,"comment",viff_info.comment,exception); |
| if ((viff_info.machine_dependency == VFF_DEP_DECORDER) || |
| (viff_info.machine_dependency == VFF_DEP_NSORDER)) |
| image->endian=LSBEndian; |
| else |
| image->endian=MSBEndian; |
| viff_info.rows=ReadBlobLong(image); |
| viff_info.columns=ReadBlobLong(image); |
| viff_info.subrows=ReadBlobLong(image); |
| viff_info.x_offset=ReadBlobSignedLong(image); |
| viff_info.y_offset=ReadBlobSignedLong(image); |
| viff_info.x_bits_per_pixel=(float) ReadBlobLong(image); |
| viff_info.y_bits_per_pixel=(float) ReadBlobLong(image); |
| viff_info.location_type=ReadBlobLong(image); |
| viff_info.location_dimension=ReadBlobLong(image); |
| viff_info.number_of_images=ReadBlobLong(image); |
| viff_info.number_data_bands=ReadBlobLong(image); |
| viff_info.data_storage_type=ReadBlobLong(image); |
| viff_info.data_encode_scheme=ReadBlobLong(image); |
| viff_info.map_scheme=ReadBlobLong(image); |
| viff_info.map_storage_type=ReadBlobLong(image); |
| viff_info.map_rows=ReadBlobLong(image); |
| viff_info.map_columns=ReadBlobLong(image); |
| viff_info.map_subrows=ReadBlobLong(image); |
| viff_info.map_enable=ReadBlobLong(image); |
| viff_info.maps_per_cycle=ReadBlobLong(image); |
| viff_info.color_space_model=ReadBlobLong(image); |
| for (i=0; i < 420; i++) |
| (void) ReadBlobByte(image); |
| if (EOFBlob(image) != MagickFalse) |
| ThrowReaderException(CorruptImageError,"UnexpectedEndOfFile"); |
| number_pixels=(MagickSizeType) viff_info.columns*viff_info.rows; |
| if (number_pixels > GetBlobSize(image)) |
| ThrowReaderException(CorruptImageError,"InsufficientImageDataInFile"); |
| if (number_pixels != (size_t) number_pixels) |
| ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); |
| if (number_pixels == 0) |
| ThrowReaderException(CoderError,"ImageColumnOrRowSizeIsNotSupported"); |
| image->columns=viff_info.rows; |
| image->rows=viff_info.columns; |
| image->depth=viff_info.x_bits_per_pixel <= 8 ? 8UL : |
| MAGICKCORE_QUANTUM_DEPTH; |
| image->alpha_trait=viff_info.number_data_bands == 4 ? BlendPixelTrait : |
| UndefinedPixelTrait; |
| status=SetImageExtent(image,image->columns,image->rows,exception); |
| if (status == MagickFalse) |
| return(DestroyImageList(image)); |
| (void) SetImageBackgroundColor(image,exception); |
| /* |
| Verify that we can read this VIFF image. |
| */ |
| if ((viff_info.number_data_bands < 1) || (viff_info.number_data_bands > 4)) |
| ThrowReaderException(CorruptImageError,"ImproperImageHeader"); |
| if ((viff_info.data_storage_type != VFF_TYP_BIT) && |
| (viff_info.data_storage_type != VFF_TYP_1_BYTE) && |
| (viff_info.data_storage_type != VFF_TYP_2_BYTE) && |
| (viff_info.data_storage_type != VFF_TYP_4_BYTE) && |
| (viff_info.data_storage_type != VFF_TYP_FLOAT) && |
| (viff_info.data_storage_type != VFF_TYP_DOUBLE)) |
| ThrowReaderException(CoderError,"DataStorageTypeIsNotSupported"); |
| if (viff_info.data_encode_scheme != VFF_DES_RAW) |
| ThrowReaderException(CoderError,"DataEncodingSchemeIsNotSupported"); |
| if ((viff_info.map_storage_type != VFF_MAPTYP_NONE) && |
| (viff_info.map_storage_type != VFF_MAPTYP_1_BYTE) && |
| (viff_info.map_storage_type != VFF_MAPTYP_2_BYTE) && |
| (viff_info.map_storage_type != VFF_MAPTYP_4_BYTE) && |
| (viff_info.map_storage_type != VFF_MAPTYP_FLOAT) && |
| (viff_info.map_storage_type != VFF_MAPTYP_DOUBLE)) |
| ThrowReaderException(CoderError,"MapStorageTypeIsNotSupported"); |
| if ((viff_info.color_space_model != VFF_CM_NONE) && |
| (viff_info.color_space_model != VFF_CM_ntscRGB) && |
| (viff_info.color_space_model != VFF_CM_genericRGB)) |
| ThrowReaderException(CoderError,"ColorspaceModelIsNotSupported"); |
| if (viff_info.location_type != VFF_LOC_IMPLICIT) |
| ThrowReaderException(CoderError,"LocationTypeIsNotSupported"); |
| if (viff_info.number_of_images != 1) |
| ThrowReaderException(CoderError,"NumberOfImagesIsNotSupported"); |
| if (viff_info.map_rows == 0) |
| viff_info.map_scheme=VFF_MS_NONE; |
| switch ((int) viff_info.map_scheme) |
| { |
| case VFF_MS_NONE: |
| { |
| if (viff_info.number_data_bands < 3) |
| { |
| /* |
| Create linear color ramp. |
| */ |
| if (viff_info.data_storage_type == VFF_TYP_BIT) |
| image->colors=2; |
| else |
| if (viff_info.data_storage_type == VFF_MAPTYP_1_BYTE) |
| image->colors=256UL; |
| else |
| image->colors=image->depth <= 8 ? 256UL : 65536UL; |
| status=AcquireImageColormap(image,image->colors,exception); |
| if (status == MagickFalse) |
| ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); |
| } |
| break; |
| } |
| case VFF_MS_ONEPERBAND: |
| case VFF_MS_SHARED: |
| { |
| unsigned char |
| *viff_colormap; |
| |
| /* |
| Allocate VIFF colormap. |
| */ |
| switch ((int) viff_info.map_storage_type) |
| { |
| case VFF_MAPTYP_1_BYTE: bytes_per_pixel=1; break; |
| case VFF_MAPTYP_2_BYTE: bytes_per_pixel=2; break; |
| case VFF_MAPTYP_4_BYTE: bytes_per_pixel=4; break; |
| case VFF_MAPTYP_FLOAT: bytes_per_pixel=4; break; |
| case VFF_MAPTYP_DOUBLE: bytes_per_pixel=8; break; |
| default: bytes_per_pixel=1; break; |
| } |
| image->colors=viff_info.map_columns; |
| if ((MagickSizeType) (viff_info.map_rows*image->colors) > GetBlobSize(image)) |
| ThrowReaderException(CorruptImageError,"InsufficientImageDataInFile"); |
| if (AcquireImageColormap(image,image->colors,exception) == MagickFalse) |
| ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); |
| if ((MagickSizeType) viff_info.map_rows > GetBlobSize(image)) |
| ThrowReaderException(CorruptImageError,"InsufficientImageDataInFile"); |
| if ((MagickSizeType) viff_info.map_rows > |
| (viff_info.map_rows*bytes_per_pixel*sizeof(*viff_colormap))) |
| ThrowReaderException(CorruptImageError,"ImproperImageHeader"); |
| viff_colormap=(unsigned char *) AcquireQuantumMemory(image->colors, |
| viff_info.map_rows*bytes_per_pixel*sizeof(*viff_colormap)); |
| if (viff_colormap == (unsigned char *) NULL) |
| ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); |
| /* |
| Read VIFF raster colormap. |
| */ |
| count=ReadBlob(image,bytes_per_pixel*image->colors*viff_info.map_rows, |
| viff_colormap); |
| lsb_first=1; |
| if (*(char *) &lsb_first && |
| ((viff_info.machine_dependency != VFF_DEP_DECORDER) && |
| (viff_info.machine_dependency != VFF_DEP_NSORDER))) |
| switch ((int) viff_info.map_storage_type) |
| { |
| case VFF_MAPTYP_2_BYTE: |
| { |
| MSBOrderShort(viff_colormap,(bytes_per_pixel*image->colors* |
| viff_info.map_rows)); |
| break; |
| } |
| case VFF_MAPTYP_4_BYTE: |
| case VFF_MAPTYP_FLOAT: |
| { |
| MSBOrderLong(viff_colormap,(bytes_per_pixel*image->colors* |
| viff_info.map_rows)); |
| break; |
| } |
| default: break; |
| } |
| for (i=0; i < (ssize_t) (viff_info.map_rows*image->colors); i++) |
| { |
| switch ((int) viff_info.map_storage_type) |
| { |
| case VFF_MAPTYP_2_BYTE: value=1.0*((short *) viff_colormap)[i]; break; |
| case VFF_MAPTYP_4_BYTE: value=1.0*((int *) viff_colormap)[i]; break; |
| case VFF_MAPTYP_FLOAT: value=((float *) viff_colormap)[i]; break; |
| case VFF_MAPTYP_DOUBLE: value=((double *) viff_colormap)[i]; break; |
| default: value=1.0*viff_colormap[i]; break; |
| } |
| if (i < (ssize_t) image->colors) |
| { |
| image->colormap[i].red=(MagickRealType) |
| ScaleCharToQuantum((unsigned char) value); |
| image->colormap[i].green=(MagickRealType) |
| ScaleCharToQuantum((unsigned char) value); |
| image->colormap[i].blue=(MagickRealType) |
| ScaleCharToQuantum((unsigned char) value); |
| } |
| else |
| if (i < (ssize_t) (2*image->colors)) |
| image->colormap[i % image->colors].green=(MagickRealType) |
| ScaleCharToQuantum((unsigned char) value); |
| else |
| if (i < (ssize_t) (3*image->colors)) |
| image->colormap[i % image->colors].blue=(MagickRealType) |
| ScaleCharToQuantum((unsigned char) value); |
| } |
| viff_colormap=(unsigned char *) RelinquishMagickMemory(viff_colormap); |
| break; |
| } |
| default: |
| ThrowReaderException(CoderError,"ColormapTypeNotSupported"); |
| } |
| if ((image_info->ping != MagickFalse) && (image_info->number_scenes != 0)) |
| if (image->scene >= (image_info->scene+image_info->number_scenes-1)) |
| break; |
| if (viff_info.data_storage_type == VFF_TYP_BIT) |
| { |
| /* |
| Create bi-level colormap. |
| */ |
| image->colors=2; |
| if (AcquireImageColormap(image,image->colors,exception) == MagickFalse) |
| ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); |
| image->colorspace=GRAYColorspace; |
| } |
| /* |
| Allocate VIFF pixels. |
| */ |
| switch ((int) viff_info.data_storage_type) |
| { |
| case VFF_TYP_2_BYTE: bytes_per_pixel=2; break; |
| case VFF_TYP_4_BYTE: bytes_per_pixel=4; break; |
| case VFF_TYP_FLOAT: bytes_per_pixel=4; break; |
| case VFF_TYP_DOUBLE: bytes_per_pixel=8; break; |
| default: bytes_per_pixel=1; break; |
| } |
| if (viff_info.data_storage_type == VFF_TYP_BIT) |
| { |
| if (HeapOverflowSanityCheckGetSize((image->columns+7UL) >> 3UL,image->rows,&max_packets) != MagickFalse) |
| ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); |
| } |
| else |
| { |
| if (HeapOverflowSanityCheckGetSize((size_t) number_pixels,viff_info.number_data_bands,&max_packets) != MagickFalse) |
| ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); |
| } |
| if ((MagickSizeType) (bytes_per_pixel*max_packets) > GetBlobSize(image)) |
| ThrowReaderException(CorruptImageError,"ImproperImageHeader"); |
| pixels=(unsigned char *) AcquireQuantumMemory((size_t) MagickMax( |
| number_pixels,max_packets),bytes_per_pixel*sizeof(*pixels)); |
| if (pixels == (unsigned char *) NULL) |
| ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); |
| (void) memset(pixels,0,MagickMax(number_pixels,max_packets)* |
| bytes_per_pixel*sizeof(*pixels)); |
| count=ReadBlob(image,bytes_per_pixel*max_packets,pixels); |
| lsb_first=1; |
| if (*(char *) &lsb_first && |
| ((viff_info.machine_dependency != VFF_DEP_DECORDER) && |
| (viff_info.machine_dependency != VFF_DEP_NSORDER))) |
| switch ((int) viff_info.data_storage_type) |
| { |
| case VFF_TYP_2_BYTE: |
| { |
| MSBOrderShort(pixels,bytes_per_pixel*max_packets); |
| break; |
| } |
| case VFF_TYP_4_BYTE: |
| case VFF_TYP_FLOAT: |
| { |
| MSBOrderLong(pixels,bytes_per_pixel*max_packets); |
| break; |
| } |
| default: break; |
| } |
| min_value=0.0; |
| scale_factor=1.0; |
| if ((viff_info.data_storage_type != VFF_TYP_1_BYTE) && |
| (viff_info.map_scheme == VFF_MS_NONE)) |
| { |
| double |
| max_value; |
| |
| /* |
| Determine scale factor. |
| */ |
| switch ((int) viff_info.data_storage_type) |
| { |
| case VFF_TYP_2_BYTE: value=1.0*((short *) pixels)[0]; break; |
| case VFF_TYP_4_BYTE: value=1.0*((int *) pixels)[0]; break; |
| case VFF_TYP_FLOAT: value=((float *) pixels)[0]; break; |
| case VFF_TYP_DOUBLE: value=((double *) pixels)[0]; break; |
| default: value=1.0*pixels[0]; break; |
| } |
| max_value=value; |
| min_value=value; |
| for (i=0; i < (ssize_t) max_packets; i++) |
| { |
| switch ((int) viff_info.data_storage_type) |
| { |
| case VFF_TYP_2_BYTE: value=1.0*((short *) pixels)[i]; break; |
| case VFF_TYP_4_BYTE: value=1.0*((int *) pixels)[i]; break; |
| case VFF_TYP_FLOAT: value=((float *) pixels)[i]; break; |
| case VFF_TYP_DOUBLE: value=((double *) pixels)[i]; break; |
| default: value=1.0*pixels[i]; break; |
| } |
| if (value > max_value) |
| max_value=value; |
| else |
| if (value < min_value) |
| min_value=value; |
| } |
| if ((min_value == 0) && (max_value == 0)) |
| scale_factor=0; |
| else |
| if (min_value == max_value) |
| { |
| scale_factor=(double) QuantumRange/min_value; |
| min_value=0; |
| } |
| else |
| scale_factor=(double) QuantumRange/(max_value-min_value); |
| } |
| /* |
| Convert pixels to Quantum size. |
| */ |
| p=(unsigned char *) pixels; |
| for (i=0; i < (ssize_t) max_packets; i++) |
| { |
| switch ((int) viff_info.data_storage_type) |
| { |
| case VFF_TYP_2_BYTE: value=1.0*((short *) pixels)[i]; break; |
| case VFF_TYP_4_BYTE: value=1.0*((int *) pixels)[i]; break; |
| case VFF_TYP_FLOAT: value=((float *) pixels)[i]; break; |
| case VFF_TYP_DOUBLE: value=((double *) pixels)[i]; break; |
| default: value=1.0*pixels[i]; break; |
| } |
| if (viff_info.map_scheme == VFF_MS_NONE) |
| { |
| value=(value-min_value)*scale_factor; |
| if (value > QuantumRange) |
| value=QuantumRange; |
| else |
| if (value < 0) |
| value=0; |
| } |
| *p=(unsigned char) ((Quantum) value); |
| p++; |
| } |
| /* |
| Convert VIFF raster image to pixel packets. |
| */ |
| p=(unsigned char *) pixels; |
| if (viff_info.data_storage_type == VFF_TYP_BIT) |
| { |
| /* |
| Convert bitmap scanline. |
| */ |
| for (y=0; y < (ssize_t) image->rows; y++) |
| { |
| q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); |
| if (q == (Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) (image->columns-7); x+=8) |
| { |
| for (bit=0; bit < 8; bit++) |
| { |
| quantum=(size_t) ((*p) & (0x01 << bit) ? 0 : 1); |
| SetPixelRed(image,quantum == 0 ? 0 : QuantumRange,q); |
| SetPixelGreen(image,quantum == 0 ? 0 : QuantumRange,q); |
| SetPixelBlue(image,quantum == 0 ? 0 : QuantumRange,q); |
| if (image->storage_class == PseudoClass) |
| SetPixelIndex(image,(Quantum) quantum,q); |
| q+=GetPixelChannels(image); |
| } |
| p++; |
| } |
| if ((image->columns % 8) != 0) |
| { |
| for (bit=0; bit < (int) (image->columns % 8); bit++) |
| { |
| quantum=(size_t) ((*p) & (0x01 << bit) ? 0 : 1); |
| SetPixelRed(image,quantum == 0 ? 0 : QuantumRange,q); |
| SetPixelGreen(image,quantum == 0 ? 0 : QuantumRange,q); |
| SetPixelBlue(image,quantum == 0 ? 0 : QuantumRange,q); |
| if (image->storage_class == PseudoClass) |
| SetPixelIndex(image,(Quantum) quantum,q); |
| q+=GetPixelChannels(image); |
| } |
| p++; |
| } |
| if (SyncAuthenticPixels(image,exception) == MagickFalse) |
| break; |
| if (image->previous == (Image *) NULL) |
| { |
| status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y, |
| image->rows); |
| if (status == MagickFalse) |
| break; |
| } |
| } |
| } |
| else |
| if (image->storage_class == PseudoClass) |
| for (y=0; y < (ssize_t) image->rows; y++) |
| { |
| q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); |
| if (q == (Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) image->columns; x++) |
| { |
| SetPixelIndex(image,*p++,q); |
| 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; |
| } |
| } |
| else |
| { |
| /* |
| Convert DirectColor scanline. |
| */ |
| number_pixels=(MagickSizeType) image->columns*image->rows; |
| for (y=0; y < (ssize_t) image->rows; y++) |
| { |
| q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); |
| if (q == (Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) image->columns; x++) |
| { |
| SetPixelRed(image,ScaleCharToQuantum(*p),q); |
| SetPixelGreen(image,ScaleCharToQuantum(*(p+number_pixels)),q); |
| SetPixelBlue(image,ScaleCharToQuantum(*(p+2*number_pixels)),q); |
| if (image->colors != 0) |
| { |
| ssize_t |
| index; |
| |
| index=(ssize_t) GetPixelRed(image,q); |
| SetPixelRed(image,ClampToQuantum(image->colormap[ |
| ConstrainColormapIndex(image,index,exception)].red),q); |
| index=(ssize_t) GetPixelGreen(image,q); |
| SetPixelGreen(image,ClampToQuantum(image->colormap[ |
| ConstrainColormapIndex(image,index,exception)].green),q); |
| index=(ssize_t) GetPixelBlue(image,q); |
| SetPixelBlue(image,ClampToQuantum(image->colormap[ |
| ConstrainColormapIndex(image,index,exception)].blue),q); |
| } |
| SetPixelAlpha(image,image->alpha_trait != UndefinedPixelTrait ? |
| ScaleCharToQuantum(*(p+number_pixels*3)) : OpaqueAlpha,q); |
| p++; |
| 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; |
| } |
| } |
| } |
| pixels=(unsigned char *) RelinquishMagickMemory(pixels); |
| if (image->storage_class == PseudoClass) |
| (void) SyncImage(image,exception); |
| 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; |
| count=ReadBlob(image,1,&viff_info.identifier); |
| if ((count == 1) && (viff_info.identifier == 0xab)) |
| { |
| /* |
| 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) && (viff_info.identifier == 0xab)); |
| (void) CloseBlob(image); |
| if (status == MagickFalse) |
| return(DestroyImageList(image)); |
| return(GetFirstImageInList(image)); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % R e g i s t e r V I F F I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % RegisterVIFFImage() adds properties for the VIFF image format to |
| % the list of supported formats. The properties 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 RegisterVIFFImage method is: |
| % |
| % size_t RegisterVIFFImage(void) |
| % |
| */ |
| ModuleExport size_t RegisterVIFFImage(void) |
| { |
| MagickInfo |
| *entry; |
| |
| entry=AcquireMagickInfo("VIFF","VIFF","Khoros Visualization image"); |
| entry->decoder=(DecodeImageHandler *) ReadVIFFImage; |
| entry->encoder=(EncodeImageHandler *) WriteVIFFImage; |
| entry->magick=(IsImageFormatHandler *) IsVIFF; |
| entry->flags|=CoderDecoderSeekableStreamFlag; |
| (void) RegisterMagickInfo(entry); |
| entry=AcquireMagickInfo("VIFF","XV","Khoros Visualization image"); |
| entry->decoder=(DecodeImageHandler *) ReadVIFFImage; |
| entry->encoder=(EncodeImageHandler *) WriteVIFFImage; |
| entry->flags|=CoderDecoderSeekableStreamFlag; |
| (void) RegisterMagickInfo(entry); |
| return(MagickImageCoderSignature); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % U n r e g i s t e r V I F F I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % UnregisterVIFFImage() removes format registrations made by the |
| % VIFF module from the list of supported formats. |
| % |
| % The format of the UnregisterVIFFImage method is: |
| % |
| % UnregisterVIFFImage(void) |
| % |
| */ |
| ModuleExport void UnregisterVIFFImage(void) |
| { |
| (void) UnregisterMagickInfo("VIFF"); |
| (void) UnregisterMagickInfo("XV"); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % W r i t e V I F F I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % WriteVIFFImage() writes an image to a file in the VIFF image format. |
| % |
| % The format of the WriteVIFFImage method is: |
| % |
| % MagickBooleanType WriteVIFFImage(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 WriteVIFFImage(const ImageInfo *image_info, |
| Image *image,ExceptionInfo *exception) |
| { |
| #define VFF_CM_genericRGB 15 |
| #define VFF_CM_NONE 0 |
| #define VFF_DEP_IEEEORDER 0x2 |
| #define VFF_DES_RAW 0 |
| #define VFF_LOC_IMPLICIT 1 |
| #define VFF_MAPTYP_NONE 0 |
| #define VFF_MAPTYP_1_BYTE 1 |
| #define VFF_MS_NONE 0 |
| #define VFF_MS_ONEPERBAND 1 |
| #define VFF_TYP_BIT 0 |
| #define VFF_TYP_1_BYTE 1 |
| |
| typedef struct _ViffInfo |
| { |
| char |
| identifier, |
| file_type, |
| release, |
| version, |
| machine_dependency, |
| reserve[3], |
| comment[512]; |
| |
| size_t |
| rows, |
| columns, |
| subrows; |
| |
| int |
| x_offset, |
| y_offset; |
| |
| unsigned int |
| x_bits_per_pixel, |
| y_bits_per_pixel, |
| location_type, |
| location_dimension, |
| number_of_images, |
| number_data_bands, |
| data_storage_type, |
| data_encode_scheme, |
| map_scheme, |
| map_storage_type, |
| map_rows, |
| map_columns, |
| map_subrows, |
| map_enable, |
| maps_per_cycle, |
| color_space_model; |
| } ViffInfo; |
| |
| const char |
| *value; |
| |
| MagickBooleanType |
| status; |
| |
| MagickOffsetType |
| scene; |
| |
| MagickSizeType |
| number_pixels, |
| packets; |
| |
| MemoryInfo |
| *pixel_info; |
| |
| register const Quantum |
| *p; |
| |
| register ssize_t |
| x; |
| |
| register ssize_t |
| i; |
| |
| register unsigned char |
| *q; |
| |
| size_t |
| imageListLength; |
| |
| ssize_t |
| y; |
| |
| unsigned char |
| *pixels; |
| |
| ViffInfo |
| viff_info; |
| |
| /* |
| Open output image file. |
| */ |
| 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); |
| assert(exception != (ExceptionInfo *) NULL); |
| assert(exception->signature == MagickCoreSignature); |
| status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception); |
| if (status == MagickFalse) |
| return(status); |
| (void) memset(&viff_info,0,sizeof(ViffInfo)); |
| scene=0; |
| imageListLength=GetImageListLength(image); |
| do |
| { |
| /* |
| Initialize VIFF image structure. |
| */ |
| (void) TransformImageColorspace(image,sRGBColorspace,exception); |
| DisableMSCWarning(4310) |
| viff_info.identifier=(char) 0xab; |
| RestoreMSCWarning |
| viff_info.file_type=1; |
| viff_info.release=1; |
| viff_info.version=3; |
| viff_info.machine_dependency=VFF_DEP_IEEEORDER; /* IEEE byte ordering */ |
| *viff_info.comment='\0'; |
| value=GetImageProperty(image,"comment",exception); |
| if (value != (const char *) NULL) |
| (void) CopyMagickString(viff_info.comment,value,MagickMin(strlen(value), |
| 511)+1); |
| viff_info.rows=image->columns; |
| viff_info.columns=image->rows; |
| viff_info.subrows=0; |
| viff_info.x_offset=(~0); |
| viff_info.y_offset=(~0); |
| viff_info.x_bits_per_pixel=0; |
| viff_info.y_bits_per_pixel=0; |
| viff_info.location_type=VFF_LOC_IMPLICIT; |
| viff_info.location_dimension=0; |
| viff_info.number_of_images=1; |
| viff_info.data_encode_scheme=VFF_DES_RAW; |
| viff_info.map_scheme=VFF_MS_NONE; |
| viff_info.map_storage_type=VFF_MAPTYP_NONE; |
| viff_info.map_rows=0; |
| viff_info.map_columns=0; |
| viff_info.map_subrows=0; |
| viff_info.map_enable=1; /* no colormap */ |
| viff_info.maps_per_cycle=0; |
| number_pixels=(MagickSizeType) image->columns*image->rows; |
| if (image->storage_class == DirectClass) |
| { |
| /* |
| Full color VIFF raster. |
| */ |
| viff_info.number_data_bands=image->alpha_trait ? 4U : 3U; |
| viff_info.color_space_model=VFF_CM_genericRGB; |
| viff_info.data_storage_type=VFF_TYP_1_BYTE; |
| packets=viff_info.number_data_bands*number_pixels; |
| } |
| else |
| { |
| viff_info.number_data_bands=1; |
| viff_info.color_space_model=VFF_CM_NONE; |
| viff_info.data_storage_type=VFF_TYP_1_BYTE; |
| packets=number_pixels; |
| if (SetImageGray(image,exception) == MagickFalse) |
| { |
| /* |
| Colormapped VIFF raster. |
| */ |
| viff_info.map_scheme=VFF_MS_ONEPERBAND; |
| viff_info.map_storage_type=VFF_MAPTYP_1_BYTE; |
| viff_info.map_rows=3; |
| viff_info.map_columns=(unsigned int) image->colors; |
| } |
| else |
| if (image->colors <= 2) |
| { |
| /* |
| Monochrome VIFF raster. |
| */ |
| viff_info.data_storage_type=VFF_TYP_BIT; |
| packets=((image->columns+7) >> 3)*image->rows; |
| } |
| } |
| /* |
| Write VIFF image header (pad to 1024 bytes). |
| */ |
| (void) WriteBlob(image,sizeof(viff_info.identifier),(unsigned char *) |
| &viff_info.identifier); |
| (void) WriteBlob(image,sizeof(viff_info.file_type),(unsigned char *) |
| &viff_info.file_type); |
| (void) WriteBlob(image,sizeof(viff_info.release),(unsigned char *) |
| &viff_info.release); |
| (void) WriteBlob(image,sizeof(viff_info.version),(unsigned char *) |
| &viff_info.version); |
| (void) WriteBlob(image,sizeof(viff_info.machine_dependency), |
| (unsigned char *) &viff_info.machine_dependency); |
| (void) WriteBlob(image,sizeof(viff_info.reserve),(unsigned char *) |
| viff_info.reserve); |
| (void) WriteBlob(image,512,(unsigned char *) viff_info.comment); |
| (void) WriteBlobMSBLong(image,(unsigned int) viff_info.rows); |
| (void) WriteBlobMSBLong(image,(unsigned int) viff_info.columns); |
| (void) WriteBlobMSBLong(image,(unsigned int) viff_info.subrows); |
| (void) WriteBlobMSBLong(image,(unsigned int) viff_info.x_offset); |
| (void) WriteBlobMSBLong(image,(unsigned int) viff_info.y_offset); |
| viff_info.x_bits_per_pixel=(unsigned int) ((63 << 24) | (128 << 16)); |
| (void) WriteBlobMSBLong(image,(unsigned int) viff_info.x_bits_per_pixel); |
| viff_info.y_bits_per_pixel=(unsigned int) ((63 << 24) | (128 << 16)); |
| (void) WriteBlobMSBLong(image,(unsigned int) viff_info.y_bits_per_pixel); |
| (void) WriteBlobMSBLong(image,viff_info.location_type); |
| (void) WriteBlobMSBLong(image,viff_info.location_dimension); |
| (void) WriteBlobMSBLong(image,(unsigned int) viff_info.number_of_images); |
| (void) WriteBlobMSBLong(image,(unsigned int) viff_info.number_data_bands); |
| (void) WriteBlobMSBLong(image,(unsigned int) viff_info.data_storage_type); |
| (void) WriteBlobMSBLong(image,(unsigned int) viff_info.data_encode_scheme); |
| (void) WriteBlobMSBLong(image,(unsigned int) viff_info.map_scheme); |
| (void) WriteBlobMSBLong(image,(unsigned int) viff_info.map_storage_type); |
| (void) WriteBlobMSBLong(image,(unsigned int) viff_info.map_rows); |
| (void) WriteBlobMSBLong(image,(unsigned int) viff_info.map_columns); |
| (void) WriteBlobMSBLong(image,(unsigned int) viff_info.map_subrows); |
| (void) WriteBlobMSBLong(image,(unsigned int) viff_info.map_enable); |
| (void) WriteBlobMSBLong(image,(unsigned int) viff_info.maps_per_cycle); |
| (void) WriteBlobMSBLong(image,(unsigned int) viff_info.color_space_model); |
| for (i=0; i < 420; i++) |
| (void) WriteBlobByte(image,'\0'); |
| /* |
| Convert MIFF to VIFF raster pixels. |
| */ |
| pixel_info=AcquireVirtualMemory((size_t) packets,sizeof(*pixels)); |
| if (pixel_info == (MemoryInfo *) NULL) |
| ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed"); |
| pixels=(unsigned char *) GetVirtualMemoryBlob(pixel_info); |
| q=pixels; |
| if (image->storage_class == DirectClass) |
| { |
| /* |
| Convert DirectClass packet to VIFF RGB pixel. |
| */ |
| number_pixels=(MagickSizeType) image->columns*image->rows; |
| for (y=0; y < (ssize_t) image->rows; y++) |
| { |
| p=GetVirtualPixels(image,0,y,image->columns,1,exception); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) image->columns; x++) |
| { |
| *q=ScaleQuantumToChar(GetPixelRed(image,p)); |
| *(q+number_pixels)=ScaleQuantumToChar(GetPixelGreen(image,p)); |
| *(q+number_pixels*2)=ScaleQuantumToChar(GetPixelBlue(image,p)); |
| if (image->alpha_trait != UndefinedPixelTrait) |
| *(q+number_pixels*3)=ScaleQuantumToChar((Quantum) |
| (GetPixelAlpha(image,p))); |
| p+=GetPixelChannels(image); |
| q++; |
| } |
| if (image->previous == (Image *) NULL) |
| { |
| status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y, |
| image->rows); |
| if (status == MagickFalse) |
| break; |
| } |
| } |
| } |
| else |
| if (SetImageGray(image,exception) == MagickFalse) |
| { |
| unsigned char |
| *viff_colormap; |
| |
| /* |
| Dump colormap to file. |
| */ |
| viff_colormap=(unsigned char *) AcquireQuantumMemory(image->colors, |
| 3*sizeof(*viff_colormap)); |
| if (viff_colormap == (unsigned char *) NULL) |
| ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed"); |
| q=viff_colormap; |
| for (i=0; i < (ssize_t) image->colors; i++) |
| *q++=ScaleQuantumToChar(ClampToQuantum(image->colormap[i].red)); |
| for (i=0; i < (ssize_t) image->colors; i++) |
| *q++=ScaleQuantumToChar(ClampToQuantum(image->colormap[i].green)); |
| for (i=0; i < (ssize_t) image->colors; i++) |
| *q++=ScaleQuantumToChar(ClampToQuantum(image->colormap[i].blue)); |
| (void) WriteBlob(image,3*image->colors,viff_colormap); |
| viff_colormap=(unsigned char *) RelinquishMagickMemory(viff_colormap); |
| /* |
| Convert PseudoClass packet to VIFF colormapped pixels. |
| */ |
| q=pixels; |
| for (y=0; y < (ssize_t) image->rows; y++) |
| { |
| p=GetVirtualPixels(image,0,y,image->columns,1,exception); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) image->columns; x++) |
| { |
| *q++=(unsigned char) GetPixelIndex(image,p); |
| p+=GetPixelChannels(image); |
| } |
| if (image->previous == (Image *) NULL) |
| { |
| status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y, |
| image->rows); |
| if (status == MagickFalse) |
| break; |
| } |
| } |
| } |
| else |
| if (image->colors <= 2) |
| { |
| ssize_t |
| x, |
| y; |
| |
| register unsigned char |
| bit, |
| byte; |
| |
| /* |
| Convert PseudoClass image to a VIFF monochrome image. |
| */ |
| for (y=0; y < (ssize_t) image->rows; y++) |
| { |
| p=GetVirtualPixels(image,0,y,image->columns,1,exception); |
| if (p == (const Quantum *) NULL) |
| break; |
| bit=0; |
| byte=0; |
| for (x=0; x < (ssize_t) image->columns; x++) |
| { |
| byte>>=1; |
| if (GetPixelLuma(image,p) < (QuantumRange/2.0)) |
| byte|=0x80; |
| bit++; |
| if (bit == 8) |
| { |
| *q++=byte; |
| bit=0; |
| byte=0; |
| } |
| p+=GetPixelChannels(image); |
| } |
| if (bit != 0) |
| *q++=byte >> (8-bit); |
| if (image->previous == (Image *) NULL) |
| { |
| status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) |
| y,image->rows); |
| if (status == MagickFalse) |
| break; |
| } |
| } |
| } |
| else |
| { |
| /* |
| Convert PseudoClass packet to VIFF grayscale pixel. |
| */ |
| for (y=0; y < (ssize_t) image->rows; y++) |
| { |
| p=GetVirtualPixels(image,0,y,image->columns,1,exception); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) image->columns; x++) |
| { |
| *q++=(unsigned char) ClampToQuantum(GetPixelLuma(image,p)); |
| p+=GetPixelChannels(image); |
| } |
| if (image->previous == (Image *) NULL) |
| { |
| status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) |
| y,image->rows); |
| if (status == MagickFalse) |
| break; |
| } |
| } |
| } |
| (void) WriteBlob(image,(size_t) packets,pixels); |
| pixel_info=RelinquishVirtualMemory(pixel_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); |
| } |
