1227 lines
37 KiB
C
1227 lines
37 KiB
C
/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% W W EEEEE BBBB PPPP %
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% W W E B B P P %
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% W W W EEE BBBB PPPP %
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% WW WW E B B P %
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% W W EEEEE BBBB P %
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% %
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% %
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% Read/Write WebP Image Format %
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% %
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% Software Design %
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||
% Cristy %
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% March 2011 %
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% %
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% %
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% Copyright 1999-2021 ImageMagick Studio LLC, a non-profit organization %
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% dedicated to making software imaging solutions freely available. %
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% %
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% You may not use this file except in compliance with the License. You may %
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% obtain a copy of the License at %
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% %
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% https://imagemagick.org/script/license.php %
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% %
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% Unless required by applicable law or agreed to in writing, software %
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% distributed under the License is distributed on an "AS IS" BASIS, %
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% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
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% See the License for the specific language governing permissions and %
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% limitations under the License. %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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%
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*/
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/*
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Include declarations.
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*/
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#include "MagickCore/studio.h"
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#include "MagickCore/artifact.h"
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#include "MagickCore/blob.h"
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#include "MagickCore/blob-private.h"
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#include "MagickCore/client.h"
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#include "MagickCore/colorspace-private.h"
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#include "MagickCore/display.h"
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#include "MagickCore/exception.h"
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#include "MagickCore/exception-private.h"
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#include "MagickCore/image.h"
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#include "MagickCore/image-private.h"
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#include "MagickCore/layer.h"
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#include "MagickCore/list.h"
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#include "MagickCore/magick.h"
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#include "MagickCore/monitor.h"
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#include "MagickCore/monitor-private.h"
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#include "MagickCore/memory_.h"
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#include "MagickCore/option.h"
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#include "MagickCore/pixel-accessor.h"
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#include "MagickCore/profile.h"
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#include "MagickCore/property.h"
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#include "MagickCore/quantum-private.h"
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#include "MagickCore/static.h"
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#include "MagickCore/string_.h"
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#include "MagickCore/string-private.h"
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||
#include "MagickCore/module.h"
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#include "MagickCore/utility.h"
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#include "MagickCore/xwindow.h"
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#include "MagickCore/xwindow-private.h"
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#if defined(MAGICKCORE_WEBP_DELEGATE)
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#include <webp/decode.h>
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#include <webp/encode.h>
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#if defined(MAGICKCORE_WEBPMUX_DELEGATE)
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#include <webp/mux.h>
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#include <webp/demux.h>
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#endif
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#endif
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/*
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Forward declarations.
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*/
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#if defined(MAGICKCORE_WEBP_DELEGATE)
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static MagickBooleanType
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WriteWEBPImage(const ImageInfo *,Image *,ExceptionInfo *);
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#endif
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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% I s W E B P %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% IsWEBP() returns MagickTrue if the image format type, identified by the
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% magick string, is WebP.
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%
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% The format of the IsWEBP method is:
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%
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% MagickBooleanType IsWEBP(const unsigned char *magick,const size_t length)
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%
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||
% A description of each parameter follows:
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||
%
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% o magick: compare image format pattern against these bytes.
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%
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% o length: Specifies the length of the magick string.
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%
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*/
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static MagickBooleanType IsWEBP(const unsigned char *magick,const size_t length)
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{
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if (length < 12)
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return(MagickFalse);
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if (LocaleNCompare((const char *) magick+8,"WEBP",4) == 0)
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return(MagickTrue);
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return(MagickFalse);
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}
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#if defined(MAGICKCORE_WEBP_DELEGATE)
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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% R e a d W E B P I m a g e %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% ReadWEBPImage() reads an image in the WebP image format.
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%
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% The format of the ReadWEBPImage method is:
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%
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% Image *ReadWEBPImage(const ImageInfo *image_info,
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% ExceptionInfo *exception)
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%
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% A description of each parameter follows:
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%
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% o image_info: the image info.
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%
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% o exception: return any errors or warnings in this structure.
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%
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*/
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static inline uint32_t ReadWebPLSBWord(
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const unsigned char *magick_restrict data)
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{
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const unsigned char
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*p;
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uint32_t
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value;
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p=data;
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value=(uint32_t) (*p++);
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value|=((uint32_t) (*p++)) << 8;
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value|=((uint32_t) (*p++)) << 16;
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value|=((uint32_t) (*p++)) << 24;
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return(value);
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}
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static MagickBooleanType IsWEBPImageLossless(const unsigned char *stream,
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const size_t length)
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{
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#define VP8_CHUNK_INDEX 15
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#define LOSSLESS_FLAG 'L'
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#define EXTENDED_HEADER 'X'
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#define VP8_CHUNK_HEADER "VP8"
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#define VP8_CHUNK_HEADER_SIZE 3
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#define RIFF_HEADER_SIZE 12
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#define VP8X_CHUNK_SIZE 10
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#define TAG_SIZE 4
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#define CHUNK_SIZE_BYTES 4
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#define CHUNK_HEADER_SIZE 8
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#define MAX_CHUNK_PAYLOAD (~0U-CHUNK_HEADER_SIZE-1)
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size_t
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offset;
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/*
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||
Read simple header.
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*/
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if (length <= VP8_CHUNK_INDEX)
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return(MagickFalse);
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if (stream[VP8_CHUNK_INDEX] != EXTENDED_HEADER)
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return(stream[VP8_CHUNK_INDEX] == LOSSLESS_FLAG ? MagickTrue : MagickFalse);
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/*
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Read extended header.
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*/
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offset=RIFF_HEADER_SIZE+TAG_SIZE+CHUNK_SIZE_BYTES+VP8X_CHUNK_SIZE;
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while (offset <= (length-TAG_SIZE-TAG_SIZE-4))
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{
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uint32_t
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chunk_size,
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chunk_size_pad;
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chunk_size=ReadWebPLSBWord(stream+offset+TAG_SIZE);
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if (chunk_size > MAX_CHUNK_PAYLOAD)
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break;
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chunk_size_pad=(CHUNK_HEADER_SIZE+chunk_size+1) & ~1;
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if (memcmp(stream+offset,VP8_CHUNK_HEADER,VP8_CHUNK_HEADER_SIZE) == 0)
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return(*(stream+offset+VP8_CHUNK_HEADER_SIZE) == LOSSLESS_FLAG ?
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MagickTrue : MagickFalse);
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offset+=chunk_size_pad;
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}
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return(MagickFalse);
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}
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static int FillBasicWEBPInfo(Image *image,const uint8_t *stream,size_t length,
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WebPDecoderConfig *configure)
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{
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WebPBitstreamFeatures
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*magick_restrict features = &configure->input;
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int
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webp_status;
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webp_status=WebPGetFeatures(stream,length,features);
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if (webp_status != VP8_STATUS_OK)
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return(webp_status);
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image->columns=(size_t) features->width;
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image->rows=(size_t) features->height;
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image->depth=8;
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image->alpha_trait=features->has_alpha != 0 ? BlendPixelTrait :
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UndefinedPixelTrait;
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return(webp_status);
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}
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static int ReadSingleWEBPImage(Image *image,const uint8_t *stream,
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size_t length,WebPDecoderConfig *configure,ExceptionInfo *exception,
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MagickBooleanType is_first)
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{
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int
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webp_status;
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unsigned char
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*p;
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size_t
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canvas_width,
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canvas_height,
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image_width,
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image_height;
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ssize_t
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x_offset,
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y_offset,
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y;
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WebPDecBuffer
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*magick_restrict webp_image;
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MagickBooleanType
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status;
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webp_image=&configure->output;
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if (is_first)
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{
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canvas_width=image->columns;
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canvas_height=image->rows;
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x_offset=image->page.x;
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y_offset=image->page.y;
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image->page.x=0;
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image->page.y=0;
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}
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else
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{
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canvas_width=0;
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canvas_height=0;
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x_offset=0;
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y_offset=0;
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}
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webp_status=FillBasicWEBPInfo(image,stream,length,configure);
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image_width=image->columns;
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image_height=image->rows;
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if (is_first)
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{
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image->columns=canvas_width;
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image->rows=canvas_height;
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}
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if (webp_status != VP8_STATUS_OK)
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return(webp_status);
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||
|
||
if (IsWEBPImageLossless(stream,length) != MagickFalse)
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image->quality=100;
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||
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webp_status=WebPDecode(stream,length,configure);
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if (webp_status != VP8_STATUS_OK)
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return(webp_status);
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p=(unsigned char *) webp_image->u.RGBA.rgba;
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for (y=0; y < (ssize_t) image->rows; y++)
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{
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Quantum
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||
*q;
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||
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ssize_t
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x;
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||
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q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
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if (q == (Quantum *) NULL)
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break;
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for (x=0; x < (ssize_t) image->columns; x++)
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{
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if ((x >= x_offset && x < (ssize_t) (x_offset+image_width)) &&
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(y >= y_offset && y < (ssize_t) (y_offset+image_height)))
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{
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SetPixelRed(image,ScaleCharToQuantum(*p++),q);
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SetPixelGreen(image,ScaleCharToQuantum(*p++),q);
|
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SetPixelBlue(image,ScaleCharToQuantum(*p++),q);
|
||
SetPixelAlpha(image,ScaleCharToQuantum(*p++),q);
|
||
}
|
||
else
|
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{
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SetPixelRed(image,0,q);
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SetPixelGreen(image,0,q);
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SetPixelBlue(image,0,q);
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SetPixelAlpha(image,0,q);
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}
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q+=GetPixelChannels(image);
|
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}
|
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if (SyncAuthenticPixels(image,exception) == MagickFalse)
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break;
|
||
status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
|
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image->rows);
|
||
if (status == MagickFalse)
|
||
break;
|
||
}
|
||
WebPFreeDecBuffer(webp_image);
|
||
#if defined(MAGICKCORE_WEBPMUX_DELEGATE)
|
||
{
|
||
StringInfo
|
||
*profile;
|
||
|
||
uint32_t
|
||
webp_flags = 0;
|
||
|
||
WebPData
|
||
chunk,
|
||
content;
|
||
|
||
WebPMux
|
||
*mux;
|
||
|
||
/*
|
||
Extract any profiles:
|
||
https://developers.google.com/speed/webp/docs/container-api.
|
||
*/
|
||
content.bytes=stream;
|
||
content.size=length;
|
||
mux=WebPMuxCreate(&content,0);
|
||
(void) memset(&chunk,0,sizeof(chunk));
|
||
WebPMuxGetFeatures(mux,&webp_flags);
|
||
if (webp_flags & ICCP_FLAG)
|
||
{
|
||
WebPMuxGetChunk(mux,"ICCP",&chunk);
|
||
profile=BlobToStringInfo(chunk.bytes,chunk.size);
|
||
if (profile != (StringInfo *) NULL)
|
||
{
|
||
SetImageProfile(image,"ICC",profile,exception);
|
||
profile=DestroyStringInfo(profile);
|
||
}
|
||
}
|
||
if (webp_flags & EXIF_FLAG)
|
||
{
|
||
WebPMuxGetChunk(mux,"EXIF",&chunk);
|
||
profile=BlobToStringInfo(chunk.bytes,chunk.size);
|
||
if (profile != (StringInfo *) NULL)
|
||
{
|
||
SetImageProfile(image,"EXIF",profile,exception);
|
||
profile=DestroyStringInfo(profile);
|
||
}
|
||
}
|
||
if (webp_flags & XMP_FLAG)
|
||
{
|
||
WebPMuxGetChunk(mux,"XMP",&chunk);
|
||
profile=BlobToStringInfo(chunk.bytes,chunk.size);
|
||
if (profile != (StringInfo *) NULL)
|
||
{
|
||
SetImageProfile(image,"XMP",profile,exception);
|
||
profile=DestroyStringInfo(profile);
|
||
}
|
||
}
|
||
WebPMuxDelete(mux);
|
||
}
|
||
#endif
|
||
return(webp_status);
|
||
}
|
||
|
||
#if defined(MAGICKCORE_WEBPMUX_DELEGATE)
|
||
static int ReadAnimatedWEBPImage(const ImageInfo *image_info,Image *image,
|
||
uint8_t *stream,size_t length,WebPDecoderConfig *configure,
|
||
ExceptionInfo *exception)
|
||
{
|
||
Image
|
||
*original_image;
|
||
|
||
int
|
||
image_count,
|
||
webp_status;
|
||
|
||
size_t
|
||
canvas_width,
|
||
canvas_height;
|
||
|
||
WebPData
|
||
data;
|
||
|
||
WebPDemuxer
|
||
*demux;
|
||
|
||
WebPIterator
|
||
iter;
|
||
|
||
image_count=0;
|
||
webp_status=0;
|
||
original_image=image;
|
||
webp_status=FillBasicWEBPInfo(image,stream,length,configure);
|
||
canvas_width=image->columns;
|
||
canvas_height=image->rows;
|
||
data.bytes=stream;
|
||
data.size=length;
|
||
{
|
||
WebPMux
|
||
*mux;
|
||
|
||
WebPMuxAnimParams
|
||
params;
|
||
|
||
WebPMuxError
|
||
status;
|
||
|
||
mux=WebPMuxCreate(&data,0);
|
||
status=WebPMuxGetAnimationParams(mux,¶ms);
|
||
if (status >= 0)
|
||
image->iterations=params.loop_count;
|
||
WebPMuxDelete(mux);
|
||
}
|
||
demux=WebPDemux(&data);
|
||
if (WebPDemuxGetFrame(demux,1,&iter))
|
||
{
|
||
do
|
||
{
|
||
if (image_count != 0)
|
||
{
|
||
AcquireNextImage(image_info,image,exception);
|
||
if (GetNextImageInList(image) == (Image *) NULL)
|
||
break;
|
||
image=SyncNextImageInList(image);
|
||
CloneImageProperties(image,original_image);
|
||
image->page.x=iter.x_offset;
|
||
image->page.y=iter.y_offset;
|
||
webp_status=ReadSingleWEBPImage(image,iter.fragment.bytes,
|
||
iter.fragment.size,configure,exception,MagickFalse);
|
||
}
|
||
else
|
||
{
|
||
image->page.x=iter.x_offset;
|
||
image->page.y=iter.y_offset;
|
||
webp_status=ReadSingleWEBPImage(image,iter.fragment.bytes,
|
||
iter.fragment.size,configure,exception,MagickTrue);
|
||
}
|
||
if (webp_status != VP8_STATUS_OK)
|
||
break;
|
||
image->page.width=canvas_width;
|
||
image->page.height=canvas_height;
|
||
image->ticks_per_second=100;
|
||
image->delay=iter.duration/10;
|
||
image->dispose=NoneDispose;
|
||
if (iter.dispose_method == WEBP_MUX_DISPOSE_BACKGROUND)
|
||
image->dispose=BackgroundDispose;
|
||
(void) SetImageProperty(image,"webp:mux-blend",
|
||
"AtopPreviousAlphaBlend",exception);
|
||
if (iter.blend_method == WEBP_MUX_BLEND)
|
||
(void) SetImageProperty(image,"webp:mux-blend",
|
||
"AtopBackgroundAlphaBlend",exception);
|
||
image_count++;
|
||
} while (WebPDemuxNextFrame(&iter));
|
||
WebPDemuxReleaseIterator(&iter);
|
||
}
|
||
WebPDemuxDelete(demux);
|
||
return(webp_status);
|
||
}
|
||
#endif
|
||
|
||
static Image *ReadWEBPImage(const ImageInfo *image_info,
|
||
ExceptionInfo *exception)
|
||
{
|
||
#define ThrowWEBPException(severity,tag) \
|
||
{ \
|
||
if (stream != (unsigned char *) NULL) \
|
||
stream=(unsigned char*) RelinquishMagickMemory(stream); \
|
||
if (webp_image != (WebPDecBuffer *) NULL) \
|
||
WebPFreeDecBuffer(webp_image); \
|
||
ThrowReaderException(severity,tag); \
|
||
}
|
||
|
||
Image
|
||
*image;
|
||
|
||
int
|
||
webp_status;
|
||
|
||
MagickBooleanType
|
||
status;
|
||
|
||
size_t
|
||
length;
|
||
|
||
ssize_t
|
||
count;
|
||
|
||
unsigned char
|
||
header[12],
|
||
*stream;
|
||
|
||
WebPDecoderConfig
|
||
configure;
|
||
|
||
WebPDecBuffer
|
||
*magick_restrict webp_image = &configure.output;
|
||
|
||
/*
|
||
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);
|
||
}
|
||
stream=(unsigned char *) NULL;
|
||
if (WebPInitDecoderConfig(&configure) == 0)
|
||
ThrowReaderException(ResourceLimitError,"UnableToDecodeImageFile");
|
||
webp_image->colorspace=MODE_RGBA;
|
||
count=ReadBlob(image,12,header);
|
||
if (count != 12)
|
||
ThrowWEBPException(CorruptImageError,"InsufficientImageDataInFile");
|
||
status=IsWEBP(header,count);
|
||
if (status == MagickFalse)
|
||
ThrowWEBPException(CorruptImageError,"CorruptImage");
|
||
length=(size_t) (ReadWebPLSBWord(header+4)+8);
|
||
if (length < 12)
|
||
ThrowWEBPException(CorruptImageError,"CorruptImage");
|
||
if (length > GetBlobSize(image))
|
||
ThrowWEBPException(CorruptImageError,"InsufficientImageDataInFile");
|
||
stream=(unsigned char *) AcquireQuantumMemory(length,sizeof(*stream));
|
||
if (stream == (unsigned char *) NULL)
|
||
ThrowWEBPException(ResourceLimitError,"MemoryAllocationFailed");
|
||
(void) memcpy(stream,header,12);
|
||
count=ReadBlob(image,length-12,stream+12);
|
||
if (count != (ssize_t) (length-12))
|
||
ThrowWEBPException(CorruptImageError,"InsufficientImageDataInFile");
|
||
|
||
webp_status=FillBasicWEBPInfo(image,stream,length,&configure);
|
||
if (webp_status == VP8_STATUS_OK) {
|
||
if (configure.input.has_animation) {
|
||
#if defined(MAGICKCORE_WEBPMUX_DELEGATE)
|
||
webp_status=ReadAnimatedWEBPImage(image_info,image,stream,length,
|
||
&configure,exception);
|
||
#else
|
||
webp_status=VP8_STATUS_UNSUPPORTED_FEATURE;
|
||
#endif
|
||
} else {
|
||
webp_status=ReadSingleWEBPImage(image,stream,length,&configure,exception,MagickFalse);
|
||
}
|
||
}
|
||
|
||
if (webp_status != VP8_STATUS_OK)
|
||
switch (webp_status)
|
||
{
|
||
case VP8_STATUS_OUT_OF_MEMORY:
|
||
{
|
||
ThrowWEBPException(ResourceLimitError,"MemoryAllocationFailed");
|
||
break;
|
||
}
|
||
case VP8_STATUS_INVALID_PARAM:
|
||
{
|
||
ThrowWEBPException(CorruptImageError,"invalid parameter");
|
||
break;
|
||
}
|
||
case VP8_STATUS_BITSTREAM_ERROR:
|
||
{
|
||
ThrowWEBPException(CorruptImageError,"CorruptImage");
|
||
break;
|
||
}
|
||
case VP8_STATUS_UNSUPPORTED_FEATURE:
|
||
{
|
||
ThrowWEBPException(CoderError,"DataEncodingSchemeIsNotSupported");
|
||
break;
|
||
}
|
||
case VP8_STATUS_SUSPENDED:
|
||
{
|
||
ThrowWEBPException(CorruptImageError,"decoder suspended");
|
||
break;
|
||
}
|
||
case VP8_STATUS_USER_ABORT:
|
||
{
|
||
ThrowWEBPException(CorruptImageError,"user abort");
|
||
break;
|
||
}
|
||
case VP8_STATUS_NOT_ENOUGH_DATA:
|
||
{
|
||
ThrowWEBPException(CorruptImageError,"InsufficientImageDataInFile");
|
||
break;
|
||
}
|
||
default:
|
||
ThrowWEBPException(CorruptImageError,"CorruptImage");
|
||
}
|
||
|
||
stream=(unsigned char*) RelinquishMagickMemory(stream);
|
||
(void) CloseBlob(image);
|
||
return(image);
|
||
}
|
||
#endif
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% R e g i s t e r W E B P I m a g e %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% RegisterWEBPImage() adds attributes for the WebP 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 RegisterWEBPImage method is:
|
||
%
|
||
% size_t RegisterWEBPImage(void)
|
||
%
|
||
*/
|
||
ModuleExport size_t RegisterWEBPImage(void)
|
||
{
|
||
char
|
||
version[MagickPathExtent];
|
||
|
||
MagickInfo
|
||
*entry;
|
||
|
||
*version='\0';
|
||
entry=AcquireMagickInfo("WEBP","WEBP","WebP Image Format");
|
||
#if defined(MAGICKCORE_WEBP_DELEGATE)
|
||
entry->decoder=(DecodeImageHandler *) ReadWEBPImage;
|
||
entry->encoder=(EncodeImageHandler *) WriteWEBPImage;
|
||
(void) FormatLocaleString(version,MagickPathExtent,"libwebp %d.%d.%d [%04X]",
|
||
(WebPGetEncoderVersion() >> 16) & 0xff,
|
||
(WebPGetEncoderVersion() >> 8) & 0xff,
|
||
(WebPGetEncoderVersion() >> 0) & 0xff,WEBP_ENCODER_ABI_VERSION);
|
||
#endif
|
||
entry->mime_type=ConstantString("image/webp");
|
||
entry->flags|=CoderDecoderSeekableStreamFlag;
|
||
#if !defined(MAGICKCORE_WEBPMUX_DELEGATE)
|
||
entry->flags^=CoderAdjoinFlag;
|
||
#endif
|
||
entry->magick=(IsImageFormatHandler *) IsWEBP;
|
||
if (*version != '\0')
|
||
entry->version=ConstantString(version);
|
||
(void) RegisterMagickInfo(entry);
|
||
return(MagickImageCoderSignature);
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% U n r e g i s t e r W E B P I m a g e %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% UnregisterWEBPImage() removes format registrations made by the WebP module
|
||
% from the list of supported formats.
|
||
%
|
||
% The format of the UnregisterWEBPImage method is:
|
||
%
|
||
% UnregisterWEBPImage(void)
|
||
%
|
||
*/
|
||
ModuleExport void UnregisterWEBPImage(void)
|
||
{
|
||
(void) UnregisterMagickInfo("WEBP");
|
||
}
|
||
#if defined(MAGICKCORE_WEBP_DELEGATE)
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% W r i t e W E B P I m a g e %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% WriteWEBPImage() writes an image in the WebP image format.
|
||
%
|
||
% The format of the WriteWEBPImage method is:
|
||
%
|
||
% MagickBooleanType WriteWEBPImage(const ImageInfo *image_info,
|
||
% Image *image)
|
||
%
|
||
% A description of each parameter follows.
|
||
%
|
||
% o image_info: the image info.
|
||
%
|
||
% o image: The image.
|
||
%
|
||
*/
|
||
|
||
#if WEBP_ENCODER_ABI_VERSION >= 0x0100
|
||
static int WebPEncodeProgress(int percent,const WebPPicture* picture)
|
||
{
|
||
#define EncodeImageTag "Encode/Image"
|
||
|
||
Image
|
||
*image;
|
||
|
||
MagickBooleanType
|
||
status;
|
||
|
||
image=(Image *) picture->user_data;
|
||
status=SetImageProgress(image,EncodeImageTag,percent-1,100);
|
||
return(status == MagickFalse ? 0 : 1);
|
||
}
|
||
#endif
|
||
|
||
static const char * WebPErrorCodeMessage(WebPEncodingError error_code)
|
||
{
|
||
switch (error_code)
|
||
{
|
||
case VP8_ENC_OK:
|
||
return NULL;
|
||
case VP8_ENC_ERROR_OUT_OF_MEMORY:
|
||
return "out of memory";
|
||
case VP8_ENC_ERROR_BITSTREAM_OUT_OF_MEMORY:
|
||
return "bitstream out of memory";
|
||
case VP8_ENC_ERROR_NULL_PARAMETER:
|
||
return "NULL parameter";
|
||
case VP8_ENC_ERROR_INVALID_CONFIGURATION:
|
||
return "invalid configuration";
|
||
case VP8_ENC_ERROR_BAD_DIMENSION:
|
||
return "bad dimension";
|
||
case VP8_ENC_ERROR_PARTITION0_OVERFLOW:
|
||
return "partition 0 overflow (> 512K)";
|
||
case VP8_ENC_ERROR_PARTITION_OVERFLOW:
|
||
return "partition overflow (> 16M)";
|
||
case VP8_ENC_ERROR_BAD_WRITE:
|
||
return "bad write";
|
||
case VP8_ENC_ERROR_FILE_TOO_BIG:
|
||
return "file too big (> 4GB)";
|
||
#if WEBP_ENCODER_ABI_VERSION >= 0x0100
|
||
case VP8_ENC_ERROR_USER_ABORT:
|
||
return "user abort";
|
||
case VP8_ENC_ERROR_LAST:
|
||
return "error last";
|
||
#endif
|
||
}
|
||
return "unknown exception";
|
||
}
|
||
|
||
static MagickBooleanType WriteSingleWEBPPicture(const ImageInfo *image_info,
|
||
Image *image,WebPConfig *configure,WebPPicture *picture,ExceptionInfo *exception)
|
||
{
|
||
MagickBooleanType
|
||
status;
|
||
|
||
uint32_t
|
||
*magick_restrict q;
|
||
|
||
ssize_t
|
||
y;
|
||
|
||
MemoryInfo
|
||
*pixel_info;
|
||
|
||
#if WEBP_ENCODER_ABI_VERSION >= 0x0100
|
||
picture->progress_hook=WebPEncodeProgress;
|
||
picture->user_data=(void *) image;
|
||
#endif
|
||
picture->width=(int) image->columns;
|
||
picture->height=(int) image->rows;
|
||
picture->argb_stride=(int) image->columns;
|
||
picture->use_argb=1;
|
||
|
||
/*
|
||
Allocate memory for pixels.
|
||
*/
|
||
(void) TransformImageColorspace(image,sRGBColorspace,exception);
|
||
pixel_info=AcquireVirtualMemory(image->columns,image->rows*
|
||
sizeof(*(picture->argb)));
|
||
|
||
if (pixel_info == (MemoryInfo *) NULL)
|
||
ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
|
||
picture->argb=(uint32_t *) GetVirtualMemoryBlob(pixel_info);
|
||
/*
|
||
Convert image to WebP raster pixels.
|
||
*/
|
||
status=MagickFalse;
|
||
q=picture->argb;
|
||
for (y=0; y < (ssize_t) image->rows; y++)
|
||
{
|
||
const Quantum
|
||
*magick_restrict p;
|
||
|
||
ssize_t
|
||
x;
|
||
|
||
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++=(uint32_t) (image->alpha_trait != UndefinedPixelTrait ? (uint32_t)
|
||
ScaleQuantumToChar(GetPixelAlpha(image,p)) << 24 : 0xff000000) |
|
||
((uint32_t) ScaleQuantumToChar(GetPixelRed(image,p)) << 16) |
|
||
((uint32_t) ScaleQuantumToChar(GetPixelGreen(image,p)) << 8) |
|
||
((uint32_t) ScaleQuantumToChar(GetPixelBlue(image,p)));
|
||
p+=GetPixelChannels(image);
|
||
}
|
||
status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
|
||
image->rows);
|
||
if (status == MagickFalse)
|
||
break;
|
||
}
|
||
|
||
if (status != MagickFalse)
|
||
status=(MagickBooleanType) WebPEncode(configure, picture);
|
||
|
||
RelinquishVirtualMemory(pixel_info);
|
||
|
||
if (status == MagickFalse)
|
||
(void) ThrowMagickException(exception,GetMagickModule(),CorruptImageError,
|
||
WebPErrorCodeMessage(picture->error_code),"`%s'",
|
||
image->filename);
|
||
|
||
return(status);
|
||
}
|
||
|
||
static MagickBooleanType WriteSingleWEBPImage(const ImageInfo *image_info,
|
||
Image *image,WebPConfig *configure,WebPMemoryWriter *writer,
|
||
ExceptionInfo *exception)
|
||
{
|
||
MagickBooleanType
|
||
status;
|
||
|
||
WebPPicture
|
||
picture;
|
||
|
||
if (WebPPictureInit(&picture) == 0)
|
||
ThrowWriterException(ResourceLimitError,"UnableToEncodeImageFile");
|
||
|
||
picture.writer=WebPMemoryWrite;
|
||
picture.custom_ptr=writer;
|
||
|
||
status=WriteSingleWEBPPicture(image_info,image,configure,&picture,exception);
|
||
WebPPictureFree(&picture);
|
||
|
||
return(status);
|
||
}
|
||
|
||
#if defined(MAGICKCORE_WEBPMUX_DELEGATE)
|
||
static MagickBooleanType WriteAnimatedWEBPImage(const ImageInfo *image_info,
|
||
Image *image,WebPConfig *configure,WebPData *webp_data,
|
||
ExceptionInfo *exception)
|
||
{
|
||
Image
|
||
*first_image;
|
||
|
||
size_t
|
||
effective_delta,
|
||
frame_timestamp;
|
||
|
||
WebPAnimEncoder
|
||
*enc;
|
||
|
||
WebPAnimEncoderOptions
|
||
enc_options;
|
||
|
||
WebPPicture
|
||
picture;
|
||
|
||
MagickBooleanType
|
||
status;
|
||
|
||
first_image=CoalesceImages(image,exception);
|
||
if (first_image == (Image *) NULL)
|
||
return(MagickFalse);
|
||
image=first_image;
|
||
effective_delta=0;
|
||
frame_timestamp=0;
|
||
|
||
(void) WebPAnimEncoderOptionsInit(&enc_options);
|
||
if (image_info->verbose)
|
||
enc_options.verbose=1;
|
||
enc=WebPAnimEncoderNew((int) image->page.width,(int) image->page.height,
|
||
&enc_options);
|
||
|
||
status=MagickTrue;
|
||
while (image != NULL)
|
||
{
|
||
status=(MagickBooleanType) WebPPictureInit(&picture);
|
||
if (status == MagickFalse)
|
||
{
|
||
(void) ThrowMagickException(exception,GetMagickModule(),
|
||
ResourceLimitError,"UnableToEncodeImageFile","`%s'",image->filename);
|
||
break;
|
||
}
|
||
|
||
status=WriteSingleWEBPPicture(image_info,image,configure,&picture,
|
||
exception);
|
||
if (status == MagickFalse)
|
||
break;
|
||
|
||
status=(MagickBooleanType) WebPAnimEncoderAdd(enc,&picture,
|
||
(int) frame_timestamp,configure);
|
||
WebPPictureFree(&picture);
|
||
if (status == MagickFalse)
|
||
{
|
||
(void) ThrowMagickException(exception,GetMagickModule(),
|
||
CoderError,WebPAnimEncoderGetError(enc),"`%s'",image->filename);
|
||
break;
|
||
}
|
||
|
||
effective_delta=image->delay*1000*PerceptibleReciprocal(
|
||
image->ticks_per_second);
|
||
if (effective_delta < 10)
|
||
effective_delta=100; /* Consistent with gif2webp */
|
||
frame_timestamp+=effective_delta;
|
||
|
||
image=GetNextImageInList(image);
|
||
}
|
||
|
||
if (status != MagickFalse)
|
||
{
|
||
// add last null frame and assemble picture.
|
||
status=(MagickBooleanType) WebPAnimEncoderAdd(enc,(WebPPicture *) NULL,
|
||
(int) frame_timestamp,configure);
|
||
if (status != MagickFalse)
|
||
status=(MagickBooleanType) WebPAnimEncoderAssemble(enc,webp_data);
|
||
|
||
if (status == MagickFalse)
|
||
(void) ThrowMagickException(exception,GetMagickModule(),
|
||
CoderError,WebPAnimEncoderGetError(enc),"`%s'",
|
||
first_image->filename);
|
||
}
|
||
|
||
WebPAnimEncoderDelete(enc);
|
||
DestroyImageList(first_image);
|
||
return(status);
|
||
}
|
||
|
||
static MagickBooleanType WriteWEBPImageProfile(Image *image,
|
||
WebPData *webp_data,ExceptionInfo *exception)
|
||
{
|
||
const StringInfo
|
||
*icc_profile,
|
||
*exif_profile,
|
||
*xmp_profile;
|
||
|
||
WebPData
|
||
chunk;
|
||
|
||
WebPMux
|
||
*mux;
|
||
|
||
WebPMuxError
|
||
mux_error;
|
||
|
||
WebPMuxAnimParams
|
||
new_params;
|
||
|
||
icc_profile=GetImageProfile(image,"ICC");
|
||
exif_profile=GetImageProfile(image,"EXIF");
|
||
xmp_profile=GetImageProfile(image,"XMP");
|
||
|
||
if (icc_profile == (StringInfo *) NULL
|
||
&& exif_profile == (StringInfo *) NULL
|
||
&& xmp_profile == (StringInfo *) NULL
|
||
&& image->iterations == 0)
|
||
return(MagickTrue);
|
||
|
||
mux=WebPMuxCreate(webp_data, 1);
|
||
WebPDataClear(webp_data);
|
||
|
||
if (mux == NULL)
|
||
(void) ThrowMagickException(exception,GetMagickModule(),
|
||
ResourceLimitError,"UnableToEncodeImageFile","`%s'",image->filename);
|
||
|
||
// Clean up returned data
|
||
memset(webp_data, 0, sizeof(*webp_data));
|
||
mux_error=WEBP_MUX_OK;
|
||
if (image->iterations > 0)
|
||
{
|
||
mux_error=WebPMuxGetAnimationParams(mux, &new_params);
|
||
/*
|
||
If there is only 1 frame webp_data will be created by WriteSingleWEBPImage
|
||
and WebPMuxGetAnimationParams will return WEBP_MUX_NOT_FOUND
|
||
*/
|
||
if (mux_error == WEBP_MUX_NOT_FOUND)
|
||
mux_error=WEBP_MUX_OK;
|
||
else
|
||
if (mux_error == WEBP_MUX_OK)
|
||
{
|
||
new_params.loop_count=MagickMin((int) image->iterations,65535);
|
||
mux_error=WebPMuxSetAnimationParams(mux, &new_params);
|
||
}
|
||
}
|
||
if ((icc_profile != (StringInfo *) NULL) && (mux_error == WEBP_MUX_OK))
|
||
{
|
||
chunk.bytes=GetStringInfoDatum(icc_profile);
|
||
chunk.size=GetStringInfoLength(icc_profile);
|
||
mux_error=WebPMuxSetChunk(mux,"ICCP",&chunk,0);
|
||
}
|
||
if ((exif_profile != (StringInfo *) NULL) && (mux_error == WEBP_MUX_OK))
|
||
{
|
||
chunk.bytes=GetStringInfoDatum(exif_profile);
|
||
chunk.size=GetStringInfoLength(exif_profile);
|
||
if ((chunk.size >= 6) &&
|
||
(chunk.bytes[0] == 'E') && (chunk.bytes[1] == 'x') &&
|
||
(chunk.bytes[2] == 'i') && (chunk.bytes[3] == 'f') &&
|
||
(chunk.bytes[4] == '\0') && (chunk.bytes[5] == '\0'))
|
||
{
|
||
chunk.bytes=GetStringInfoDatum(exif_profile)+6;
|
||
chunk.size-=6;
|
||
}
|
||
mux_error=WebPMuxSetChunk(mux,"EXIF",&chunk,0);
|
||
}
|
||
if ((xmp_profile != (StringInfo *) NULL) && (mux_error == WEBP_MUX_OK))
|
||
{
|
||
chunk.bytes=GetStringInfoDatum(xmp_profile);
|
||
chunk.size=GetStringInfoLength(xmp_profile);
|
||
mux_error=WebPMuxSetChunk(mux,"XMP",&chunk,0);
|
||
}
|
||
if (mux_error == WEBP_MUX_OK)
|
||
mux_error=WebPMuxAssemble(mux,webp_data);
|
||
WebPMuxDelete(mux);
|
||
|
||
if (mux_error != WEBP_MUX_OK)
|
||
(void) ThrowMagickException(exception,GetMagickModule(),
|
||
ResourceLimitError,"UnableToEncodeImageFile","`%s'",image->filename);
|
||
return(MagickTrue);
|
||
}
|
||
#endif
|
||
|
||
static inline void SetBooleanOption(const ImageInfo *image_info,
|
||
const char *option,int *setting)
|
||
{
|
||
const char
|
||
*value;
|
||
|
||
value=GetImageOption(image_info,option);
|
||
if (value != (char *) NULL)
|
||
*setting=(int) ParseCommandOption(MagickBooleanOptions,MagickFalse,value);
|
||
}
|
||
|
||
static inline void SetIntegerOption(const ImageInfo *image_info,
|
||
const char *option,int *setting)
|
||
{
|
||
const char
|
||
*value;
|
||
|
||
value=GetImageOption(image_info,option);
|
||
if (value != (const char *) NULL)
|
||
*setting=StringToInteger(value);
|
||
}
|
||
|
||
static MagickBooleanType WriteWEBPImage(const ImageInfo *image_info,
|
||
Image *image,ExceptionInfo * exception)
|
||
{
|
||
const char
|
||
*value;
|
||
|
||
MagickBooleanType
|
||
status;
|
||
|
||
WebPConfig
|
||
configure;
|
||
|
||
WebPMemoryWriter
|
||
writer;
|
||
|
||
/*
|
||
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);
|
||
if ((image->columns > 16383UL) || (image->rows > 16383UL))
|
||
ThrowWriterException(ImageError,"WidthOrHeightExceedsLimit");
|
||
status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
|
||
if (status == MagickFalse)
|
||
return(status);
|
||
if (WebPConfigInit(&configure) == 0)
|
||
ThrowWriterException(ResourceLimitError,"UnableToEncodeImageFile");
|
||
if (image->quality != UndefinedCompressionQuality)
|
||
configure.quality=(float) image->quality;
|
||
if (image->quality >= 100)
|
||
configure.lossless=1;
|
||
SetBooleanOption(image_info,"webp:lossless",&configure.lossless);
|
||
value=GetImageOption(image_info,"webp:image-hint");
|
||
if (value != (char *) NULL)
|
||
{
|
||
if (LocaleCompare(value,"default") == 0)
|
||
configure.image_hint=WEBP_HINT_DEFAULT;
|
||
if (LocaleCompare(value,"photo") == 0)
|
||
configure.image_hint=WEBP_HINT_PHOTO;
|
||
if (LocaleCompare(value,"picture") == 0)
|
||
configure.image_hint=WEBP_HINT_PICTURE;
|
||
#if WEBP_ENCODER_ABI_VERSION >= 0x0200
|
||
if (LocaleCompare(value,"graph") == 0)
|
||
configure.image_hint=WEBP_HINT_GRAPH;
|
||
#endif
|
||
}
|
||
SetBooleanOption(image_info,"webp:auto-filter",&configure.autofilter);
|
||
value=GetImageOption(image_info,"webp:target-psnr");
|
||
if (value != (char *) NULL)
|
||
configure.target_PSNR=(float) StringToDouble(value,(char **) NULL);
|
||
SetIntegerOption(image_info,"webp:alpha-compression",
|
||
&configure.alpha_compression);
|
||
SetIntegerOption(image_info,"webp:alpha-filtering",
|
||
&configure.alpha_filtering);
|
||
SetIntegerOption(image_info,"webp:alpha-quality",
|
||
&configure.alpha_quality);
|
||
SetIntegerOption(image_info,"webp:filter-strength",
|
||
&configure.filter_strength);
|
||
SetIntegerOption(image_info,"webp:filter-sharpness",
|
||
&configure.filter_sharpness);
|
||
SetIntegerOption(image_info,"webp:filter-type",&configure.filter_type);
|
||
SetIntegerOption(image_info,"webp:method",&configure.method);
|
||
SetIntegerOption(image_info,"webp:partitions",&configure.partitions);
|
||
SetIntegerOption(image_info,"webp:partition-limit",
|
||
&configure.partition_limit);
|
||
SetIntegerOption(image_info,"webp:pass",&configure.pass);
|
||
SetIntegerOption(image_info,"webp:preprocessing",&configure.preprocessing);
|
||
SetIntegerOption(image_info,"webp:segments",&configure.segments);
|
||
SetIntegerOption(image_info,"webp:show-compressed",
|
||
&configure.show_compressed);
|
||
SetIntegerOption(image_info,"webp:sns-strength",&configure.sns_strength);
|
||
SetIntegerOption(image_info,"webp:target-size",&configure.target_size);
|
||
#if WEBP_ENCODER_ABI_VERSION >= 0x0201
|
||
SetBooleanOption(image_info,"webp:emulate-jpeg-size",
|
||
&configure.emulate_jpeg_size);
|
||
SetBooleanOption(image_info,"webp:low-memory",&configure.low_memory);
|
||
SetIntegerOption(image_info,"webp:thread-level",&configure.thread_level);
|
||
#endif
|
||
#if WEBP_ENCODER_ABI_VERSION >= 0x0209
|
||
SetBooleanOption(image_info,"webp:exact",&configure.exact);
|
||
#endif
|
||
#if WEBP_ENCODER_ABI_VERSION >= 0x020e
|
||
SetIntegerOption(image_info,"webp:near-lossless",&configure.near_lossless);
|
||
SetBooleanOption(image_info,"webp:use-sharp-yuv",&configure.use_sharp_yuv);
|
||
#endif
|
||
if (WebPValidateConfig(&configure) == 0)
|
||
ThrowWriterException(ResourceLimitError,"UnableToEncodeImageFile");
|
||
#if defined(MAGICKCORE_WEBPMUX_DELEGATE)
|
||
{
|
||
WebPData
|
||
webp_data;
|
||
|
||
memset(&webp_data,0,sizeof(webp_data));
|
||
if ((image_info->adjoin != MagickFalse) &&
|
||
(GetPreviousImageInList(image) == (Image *) NULL) &&
|
||
(GetNextImageInList(image) != (Image *) NULL))
|
||
status=WriteAnimatedWEBPImage(image_info,image,&configure,&webp_data,
|
||
exception);
|
||
else
|
||
{
|
||
WebPMemoryWriterInit(&writer);
|
||
status=WriteSingleWEBPImage(image_info,image,&configure,&writer,
|
||
exception);
|
||
if (status == MagickFalse)
|
||
WebPMemoryWriterClear(&writer);
|
||
else
|
||
{
|
||
webp_data.bytes=writer.mem;
|
||
webp_data.size=writer.size;
|
||
}
|
||
}
|
||
if (status != MagickFalse)
|
||
status=WriteWEBPImageProfile(image,&webp_data,exception);
|
||
if (status != MagickFalse)
|
||
(void) WriteBlob(image,webp_data.size,webp_data.bytes);
|
||
WebPDataClear(&webp_data);
|
||
}
|
||
#else
|
||
WebPMemoryWriterInit(&writer);
|
||
status=WriteSingleWEBPImage(image_info,image,&configure,&writer,
|
||
exception);
|
||
if (status != MagickFalse)
|
||
(void) WriteBlob(image,writer.size,writer.mem);
|
||
WebPMemoryWriterClear(&writer);
|
||
#endif
|
||
(void) CloseBlob(image);
|
||
return(status);
|
||
}
|
||
#endif
|