/*
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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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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% %
|
% Software Design %
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% Cristy %
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% March 2011 %
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% %
|
% %
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% Copyright 1999-2019 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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*/
|
|
/*
|
Include declarations.
|
*/
|
#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/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/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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#endif
|
#endif
|
|
/*
|
Forward declarations.
|
*/
|
#if defined(MAGICKCORE_WEBP_DELEGATE)
|
static MagickBooleanType
|
WriteWEBPImage(const ImageInfo *,Image *,ExceptionInfo *);
|
#endif
|
|
/*
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
% %
|
% %
|
% %
|
% I s W E B P %
|
% %
|
% %
|
% %
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
|
% IsWEBP() returns MagickTrue if the image format type, identified by the
|
% magick string, is WebP.
|
%
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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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{
|
if (length < 12)
|
return(MagickFalse);
|
if (LocaleNCompare((const char *) magick+8,"WEBP",4) == 0)
|
return(MagickTrue);
|
return(MagickFalse);
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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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% %
|
% 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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% ReadWEBPImage() reads an image in the WebP image format.
|
%
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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,
|
% ExceptionInfo *exception)
|
%
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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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*/
|
|
static inline uint32_t ReadWebPLSBWord(
|
const unsigned char *magick_restrict data)
|
{
|
register const unsigned char
|
*p;
|
|
register uint32_t
|
value;
|
|
p=data;
|
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;
|
return(value);
|
}
|
|
static MagickBooleanType IsWEBPImageLossless(const unsigned char *stream,
|
const size_t length)
|
{
|
#define VP8_CHUNK_INDEX 15
|
#define LOSSLESS_FLAG 'L'
|
#define EXTENDED_HEADER 'X'
|
#define VP8_CHUNK_HEADER "VP8"
|
#define VP8_CHUNK_HEADER_SIZE 3
|
#define RIFF_HEADER_SIZE 12
|
#define VP8X_CHUNK_SIZE 10
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#define TAG_SIZE 4
|
#define CHUNK_SIZE_BYTES 4
|
#define CHUNK_HEADER_SIZE 8
|
#define MAX_CHUNK_PAYLOAD (~0U-CHUNK_HEADER_SIZE-1)
|
|
ssize_t
|
offset;
|
|
/*
|
Read simple header.
|
*/
|
if (length <= VP8_CHUNK_INDEX)
|
return(MagickFalse);
|
if (stream[VP8_CHUNK_INDEX] != EXTENDED_HEADER)
|
return(stream[VP8_CHUNK_INDEX] == LOSSLESS_FLAG ? MagickTrue : MagickFalse);
|
/*
|
Read extended header.
|
*/
|
offset=RIFF_HEADER_SIZE+TAG_SIZE+CHUNK_SIZE_BYTES+VP8X_CHUNK_SIZE;
|
while (offset+TAG_SIZE <= (ssize_t) (length-TAG_SIZE))
|
{
|
uint32_t
|
chunk_size,
|
chunk_size_pad;
|
|
chunk_size=ReadWebPLSBWord(stream+offset+TAG_SIZE);
|
if (chunk_size > MAX_CHUNK_PAYLOAD)
|
break;
|
chunk_size_pad=(CHUNK_HEADER_SIZE+chunk_size+1) & ~1;
|
if (memcmp(stream+offset,VP8_CHUNK_HEADER,VP8_CHUNK_HEADER_SIZE) == 0)
|
return(*(stream+offset+VP8_CHUNK_HEADER_SIZE) == LOSSLESS_FLAG ?
|
MagickTrue : MagickFalse);
|
offset+=chunk_size_pad;
|
}
|
return(MagickFalse);
|
}
|
|
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;
|
|
register unsigned char
|
*p;
|
|
size_t
|
length;
|
|
ssize_t
|
count,
|
y;
|
|
unsigned char
|
header[12],
|
*stream;
|
|
WebPDecoderConfig
|
configure;
|
|
WebPDecBuffer
|
*magick_restrict webp_image = &configure.output;
|
|
WebPBitstreamFeatures
|
*magick_restrict features = &configure.input;
|
|
/*
|
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=WebPGetFeatures(stream,length,features);
|
if (webp_status == VP8_STATUS_OK)
|
{
|
image->columns=(size_t) features->width;
|
image->rows=(size_t) features->height;
|
image->depth=8;
|
image->alpha_trait=features->has_alpha != 0 ? BlendPixelTrait :
|
UndefinedPixelTrait;
|
if (image_info->ping != MagickFalse)
|
{
|
stream=(unsigned char*) RelinquishMagickMemory(stream);
|
(void) CloseBlob(image);
|
return(GetFirstImageInList(image));
|
}
|
status=SetImageExtent(image,image->columns,image->rows,exception);
|
if (status == MagickFalse)
|
{
|
stream=(unsigned char*) RelinquishMagickMemory(stream);
|
(void) CloseBlob(image);
|
return(DestroyImageList(image));
|
}
|
if (IsWEBPImageLossless(stream,length) != MagickFalse)
|
image->quality=100;
|
webp_status=WebPDecode(stream,length,&configure);
|
}
|
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");
|
}
|
p=(unsigned char *) webp_image->u.RGBA.rgba;
|
for (y=0; y < (ssize_t) image->rows; y++)
|
{
|
register Quantum
|
*q;
|
|
register ssize_t
|
x;
|
|
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++),q);
|
SetPixelBlue(image,ScaleCharToQuantum(*p++),q);
|
SetPixelAlpha(image,ScaleCharToQuantum(*p++),q);
|
q+=GetPixelChannels(image);
|
}
|
if (SyncAuthenticPixels(image,exception) == MagickFalse)
|
break;
|
status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
|
image->rows);
|
if (status == MagickFalse)
|
break;
|
}
|
WebPFreeDecBuffer(webp_image);
|
#if defined(MAGICKCORE_WEBPMUX_DELEGATE)
|
{
|
StringInfo
|
*profile;
|
|
uint32_t
|
webp_flags = 0;
|
|
WebPData
|
chunk,
|
content = { stream, length };
|
|
WebPMux
|
*mux;
|
|
/*
|
Extract any profiles.
|
*/
|
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
|
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;
|
entry->flags^=CoderAdjoinFlag;
|
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
|
|
#if !defined(MAGICKCORE_WEBPMUX_DELEGATE)
|
static int WebPEncodeWriter(const unsigned char *stream,size_t length,
|
const WebPPicture *const picture)
|
{
|
Image
|
*image;
|
|
image=(Image *) picture->custom_ptr;
|
return(length != 0 ? (WriteBlob(image,length,stream) == (ssize_t) length) : 1);
|
}
|
#endif
|
|
static MagickBooleanType WriteWEBPImage(const ImageInfo *image_info,
|
Image *image,ExceptionInfo *exception)
|
{
|
const char
|
*value;
|
|
int
|
webp_status;
|
|
MagickBooleanType
|
status;
|
|
MemoryInfo
|
*pixel_info;
|
|
register uint32_t
|
*magick_restrict q;
|
|
ssize_t
|
y;
|
|
WebPAuxStats
|
statistics;
|
|
WebPConfig
|
configure;
|
|
#if defined(MAGICKCORE_WEBPMUX_DELEGATE)
|
WebPMemoryWriter
|
writer_info;
|
#endif
|
|
WebPPicture
|
picture;
|
|
/*
|
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 ((WebPPictureInit(&picture) == 0) || (WebPConfigInit(&configure) == 0))
|
ThrowWriterException(ResourceLimitError,"UnableToEncodeImageFile");
|
#if !defined(MAGICKCORE_WEBPMUX_DELEGATE)
|
picture.writer=WebPEncodeWriter;
|
picture.custom_ptr=(void *) image;
|
#else
|
WebPMemoryWriterInit(&writer_info);
|
picture.writer=WebPMemoryWrite;
|
picture.custom_ptr=(&writer_info);
|
#endif
|
#if WEBP_ENCODER_ABI_VERSION >= 0x0100
|
picture.progress_hook=WebPEncodeProgress;
|
picture.user_data=(void *) image;
|
#endif
|
picture.stats=(&statistics);
|
picture.width=(int) image->columns;
|
picture.height=(int) image->rows;
|
picture.argb_stride=(int) image->columns;
|
picture.use_argb=1;
|
if (image->quality != UndefinedCompressionQuality)
|
configure.quality=(float) image->quality;
|
if (image->quality >= 100)
|
configure.lossless=1;
|
value=GetImageOption(image_info,"webp:lossless");
|
if (value != (char *) NULL)
|
configure.lossless=(int) ParseCommandOption(MagickBooleanOptions,
|
MagickFalse,value);
|
value=GetImageOption(image_info,"webp:method");
|
if (value != (char *) NULL)
|
configure.method=StringToInteger(value);
|
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
|
}
|
value=GetImageOption(image_info,"webp:target-size");
|
if (value != (char *) NULL)
|
configure.target_size=StringToInteger(value);
|
value=GetImageOption(image_info,"webp:target-psnr");
|
if (value != (char *) NULL)
|
configure.target_PSNR=(float) StringToDouble(value,(char **) NULL);
|
value=GetImageOption(image_info,"webp:segments");
|
if (value != (char *) NULL)
|
configure.segments=StringToInteger(value);
|
value=GetImageOption(image_info,"webp:sns-strength");
|
if (value != (char *) NULL)
|
configure.sns_strength=StringToInteger(value);
|
value=GetImageOption(image_info,"webp:filter-strength");
|
if (value != (char *) NULL)
|
configure.filter_strength=StringToInteger(value);
|
value=GetImageOption(image_info,"webp:filter-sharpness");
|
if (value != (char *) NULL)
|
configure.filter_sharpness=StringToInteger(value);
|
value=GetImageOption(image_info,"webp:filter-type");
|
if (value != (char *) NULL)
|
configure.filter_type=StringToInteger(value);
|
value=GetImageOption(image_info,"webp:auto-filter");
|
if (value != (char *) NULL)
|
configure.autofilter=(int) ParseCommandOption(MagickBooleanOptions,
|
MagickFalse,value);
|
value=GetImageOption(image_info,"webp:alpha-compression");
|
if (value != (char *) NULL)
|
configure.alpha_compression=StringToInteger(value);
|
value=GetImageOption(image_info,"webp:alpha-filtering");
|
if (value != (char *) NULL)
|
configure.alpha_filtering=StringToInteger(value);
|
value=GetImageOption(image_info,"webp:alpha-quality");
|
if (value != (char *) NULL)
|
configure.alpha_quality=StringToInteger(value);
|
value=GetImageOption(image_info,"webp:pass");
|
if (value != (char *) NULL)
|
configure.pass=StringToInteger(value);
|
value=GetImageOption(image_info,"webp:show-compressed");
|
if (value != (char *) NULL)
|
configure.show_compressed=StringToInteger(value);
|
value=GetImageOption(image_info,"webp:preprocessing");
|
if (value != (char *) NULL)
|
configure.preprocessing=StringToInteger(value);
|
value=GetImageOption(image_info,"webp:partitions");
|
if (value != (char *) NULL)
|
configure.partitions=StringToInteger(value);
|
value=GetImageOption(image_info,"webp:partition-limit");
|
if (value != (char *) NULL)
|
configure.partition_limit=StringToInteger(value);
|
#if WEBP_ENCODER_ABI_VERSION >= 0x0201
|
value=GetImageOption(image_info,"webp:emulate-jpeg-size");
|
if (value != (char *) NULL)
|
configure.emulate_jpeg_size=(int) ParseCommandOption(MagickBooleanOptions,
|
MagickFalse,value);
|
value=GetImageOption(image_info,"webp:low-memory");
|
if (value != (char *) NULL)
|
configure.low_memory=(int) ParseCommandOption(MagickBooleanOptions,
|
MagickFalse,value);
|
value=GetImageOption(image_info,"webp:thread-level");
|
if (value != (char *) NULL)
|
configure.thread_level=StringToInteger(value);
|
#endif
|
#if WEBP_ENCODER_ABI_VERSION >= 0x020e
|
value=GetImageOption(image_info,"webp:use-sharp-yuv");
|
if (value != (char *) NULL)
|
configure.use_sharp_yuv=StringToInteger(value);
|
#endif
|
if (WebPValidateConfig(&configure) == 0)
|
ThrowWriterException(ResourceLimitError,"UnableToEncodeImageFile");
|
/*
|
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.
|
*/
|
q=picture.argb;
|
for (y=0; y < (ssize_t) image->rows; y++)
|
{
|
register const Quantum
|
*magick_restrict p;
|
|
register 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;
|
}
|
webp_status=WebPEncode(&configure,&picture);
|
if (webp_status == 0)
|
{
|
const char
|
*message;
|
|
switch (picture.error_code)
|
{
|
case VP8_ENC_ERROR_OUT_OF_MEMORY:
|
{
|
message="out of memory";
|
break;
|
}
|
case VP8_ENC_ERROR_BITSTREAM_OUT_OF_MEMORY:
|
{
|
message="bitstream out of memory";
|
break;
|
}
|
case VP8_ENC_ERROR_NULL_PARAMETER:
|
{
|
message="NULL parameter";
|
break;
|
}
|
case VP8_ENC_ERROR_INVALID_CONFIGURATION:
|
{
|
message="invalid configuration";
|
break;
|
}
|
case VP8_ENC_ERROR_BAD_DIMENSION:
|
{
|
message="bad dimension";
|
break;
|
}
|
case VP8_ENC_ERROR_PARTITION0_OVERFLOW:
|
{
|
message="partition 0 overflow (> 512K)";
|
break;
|
}
|
case VP8_ENC_ERROR_PARTITION_OVERFLOW:
|
{
|
message="partition overflow (> 16M)";
|
break;
|
}
|
case VP8_ENC_ERROR_BAD_WRITE:
|
{
|
message="bad write";
|
break;
|
}
|
case VP8_ENC_ERROR_FILE_TOO_BIG:
|
{
|
message="file too big (> 4GB)";
|
break;
|
}
|
#if WEBP_ENCODER_ABI_VERSION >= 0x0100
|
case VP8_ENC_ERROR_USER_ABORT:
|
{
|
message="user abort";
|
break;
|
}
|
#endif
|
default:
|
{
|
message="unknown exception";
|
break;
|
}
|
}
|
(void) ThrowMagickException(exception,GetMagickModule(),CorruptImageError,
|
(char *) message,"`%s'",image->filename);
|
}
|
#if defined(MAGICKCORE_WEBPMUX_DELEGATE)
|
{
|
const StringInfo
|
*profile;
|
|
WebPData
|
chunk,
|
image_chunk = { writer_info.mem, writer_info.size };
|
|
WebPMux
|
*mux;
|
|
WebPMuxError
|
mux_error;
|
|
/*
|
Set image profiles (if any).
|
*/
|
mux_error=WEBP_MUX_OK;
|
(void) memset(&chunk,0,sizeof(chunk));
|
mux=WebPMuxNew();
|
profile=GetImageProfile(image,"ICC");
|
if ((profile != (StringInfo *) NULL) && (mux_error == WEBP_MUX_OK))
|
{
|
chunk.bytes=GetStringInfoDatum(profile);
|
chunk.size=GetStringInfoLength(profile);
|
mux_error=WebPMuxSetChunk(mux,"ICCP",&chunk,0);
|
}
|
profile=GetImageProfile(image,"EXIF");
|
if ((profile != (StringInfo *) NULL) && (mux_error == WEBP_MUX_OK))
|
{
|
chunk.bytes=GetStringInfoDatum(profile);
|
chunk.size=GetStringInfoLength(profile);
|
mux_error=WebPMuxSetChunk(mux,"EXIF",&chunk,0);
|
}
|
profile=GetImageProfile(image,"XMP");
|
if ((profile != (StringInfo *) NULL) && (mux_error == WEBP_MUX_OK))
|
{
|
chunk.bytes=GetStringInfoDatum(profile);
|
chunk.size=GetStringInfoLength(profile);
|
mux_error=WebPMuxSetChunk(mux,"XMP",&chunk,0);
|
}
|
if (mux_error != WEBP_MUX_OK)
|
(void) ThrowMagickException(exception,GetMagickModule(),
|
ResourceLimitError,"UnableToEncodeImageFile","`%s'",image->filename);
|
if (chunk.size != 0)
|
{
|
WebPData
|
picture_profiles = { writer_info.mem, writer_info.size };
|
|
/*
|
Replace original container with image profile (if any).
|
*/
|
WebPMuxSetImage(mux,&image_chunk,1);
|
mux_error=WebPMuxAssemble(mux,&picture_profiles);
|
WebPMemoryWriterClear(&writer_info);
|
writer_info.size=picture_profiles.size;
|
writer_info.mem=(unsigned char *) picture_profiles.bytes;
|
}
|
WebPMuxDelete(mux);
|
}
|
(void) WriteBlob(image,writer_info.size,writer_info.mem);
|
#endif
|
picture.argb=(uint32_t *) NULL;
|
WebPPictureFree(&picture);
|
#if defined(MAGICKCORE_WEBPMUX_DELEGATE)
|
WebPMemoryWriterClear(&writer_info);
|
#endif
|
pixel_info=RelinquishVirtualMemory(pixel_info);
|
(void) CloseBlob(image);
|
return(webp_status == 0 ? MagickFalse : MagickTrue);
|
}
|
#endif
|
