/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% W W EEEEE BBBB PPPP %
% W W E B B P P %
% W W W EEE BBBB PPPP %
% WW WW E B B P %
% W W EEEEE BBBB P %
% %
% %
% Read/Write WebP Image Format %
% %
% Software Design %
% Cristy %
% March 2011 %
% %
% %
% Copyright 1999-2021 ImageMagick Studio LLC, a non-profit organization %
% dedicated to making software imaging solutions freely available. %
% %
% You may not use this file except in compliance with the License. You may %
% obtain a copy of the License at %
% %
% https://imagemagick.org/script/license.php %
% %
% Unless required by applicable law or agreed to in writing, software %
% distributed under the License is distributed on an "AS IS" BASIS, %
% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
% See the License for the specific language governing permissions and %
% limitations under the License. %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%
*/
/*
Include declarations.
*/
#include "magick/studio.h"
#include "magick/artifact.h"
#include "magick/blob.h"
#include "magick/blob-private.h"
#include "magick/client.h"
#include "magick/colorspace-private.h"
#include "magick/display.h"
#include "magick/exception.h"
#include "magick/exception-private.h"
#include "magick/image.h"
#include "magick/image-private.h"
#include "magick/list.h"
#include "magick/magick.h"
#include "magick/monitor.h"
#include "magick/monitor-private.h"
#include "magick/memory_.h"
#include "magick/option.h"
#include "magick/pixel-accessor.h"
#include "magick/profile.h"
#include "magick/property.h"
#include "magick/quantum-private.h"
#include "magick/static.h"
#include "magick/string_.h"
#include "magick/string-private.h"
#include "magick/module.h"
#include "magick/utility.h"
#include "magick/xwindow.h"
#include "magick/xwindow-private.h"
#if defined(MAGICKCORE_WEBP_DELEGATE)
#include <webp/decode.h>
#include <webp/encode.h>
#if defined(MAGICKCORE_WEBPMUX_DELEGATE)
#include <webp/mux.h>
#include <webp/demux.h>
#endif
#endif
/*
Forward declarations.
*/
#if defined(MAGICKCORE_WEBP_DELEGATE)
static MagickBooleanType
WriteWEBPImage(const ImageInfo *,Image *);
#endif
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% I s W E B P %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% IsWEBP() returns MagickTrue if the image format type, identified by the
% magick string, is WebP.
%
% The format of the IsWEBP method is:
%
% MagickBooleanType IsWEBP(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 IsWEBP(const unsigned char *magick,const size_t length)
{
if (length < 12)
return(MagickFalse);
if (LocaleNCompare((const char *) magick+8,"WEBP",4) == 0)
return(MagickTrue);
return(MagickFalse);
}
#if defined(MAGICKCORE_WEBP_DELEGATE)
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e a d W E B P I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% ReadWEBPImage() reads an image in the WebP image format.
%
% The format of the ReadWEBPImage method is:
%
% Image *ReadWEBPImage(const ImageInfo *image_info,
% ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o image_info: the image info.
%
% o exception: return any errors or warnings in this structure.
%
*/
static inline uint32_t ReadWebPLSBWord(
const unsigned char *magick_restrict data)
{
const unsigned char
*p;
uint32_t
value;
p=data;
value=(uint32_t) (*p++);
value|=((uint32_t) (*p++)) << 8;
value|=((uint32_t) (*p++)) << 16;
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
#define TAG_SIZE 4
#define CHUNK_SIZE_BYTES 4
#define CHUNK_HEADER_SIZE 8
#define MAX_CHUNK_PAYLOAD (~0U-CHUNK_HEADER_SIZE-1)
size_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 <= (length-TAG_SIZE-TAG_SIZE-4))
{
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 int FillBasicWEBPInfo(Image *image,const uint8_t *stream,size_t length,
WebPDecoderConfig *configure)
{
WebPBitstreamFeatures
*magick_restrict features = &configure->input;
int
webp_status;
webp_status=WebPGetFeatures(stream,length,features);
if (webp_status != VP8_STATUS_OK)
return(webp_status);
image->columns=(size_t) features->width;
image->rows=(size_t) features->height;
image->depth=8;
image->matte=features->has_alpha != 0 ? MagickTrue : MagickFalse;
return(webp_status);
}
static int ReadSingleWEBPImage(Image *image,const uint8_t *stream,
size_t length,WebPDecoderConfig *configure,ExceptionInfo *exception,
MagickBooleanType is_first)
{
int
webp_status;
unsigned char
*p;
size_t
canvas_width,
canvas_height,
image_width,
image_height;
ssize_t
x_offset,
y_offset,
y;
WebPDecBuffer
*magick_restrict webp_image = &configure->output;
MagickBooleanType
status;
if (is_first)
{
canvas_width=image->columns;
canvas_height=image->rows;
x_offset=image->page.x;
y_offset=image->page.y;
image->page.x=0;
image->page.y=0;
}
else
{
x_offset=0;
y_offset=0;
}
webp_status=FillBasicWEBPInfo(image,stream,length,configure);
image_width=image->columns;
image_height=image->rows;
if (is_first)
{
image->columns=canvas_width;
image->rows=canvas_height;
}
if (webp_status != VP8_STATUS_OK)
return(webp_status);
if (IsWEBPImageLossless(stream,length) != MagickFalse)
image->quality=100;
webp_status=WebPDecode(stream,length,configure);
if (webp_status != VP8_STATUS_OK)
return(webp_status);
p=(unsigned char *) webp_image->u.RGBA.rgba;
for (y=0; y < (ssize_t) image->rows; y++)
{
PixelPacket
*q;
ssize_t
x;
q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
if (q == (PixelPacket *) NULL)
break;
for (x=0; x < (ssize_t) image->columns; x++)
{
if ((x >= x_offset && x < (ssize_t) (x_offset+image_width)) &&
(y >= y_offset && y < (ssize_t) (y_offset+image_height)))
{
SetPixelRed(q,ScaleCharToQuantum(*p++));
SetPixelGreen(q,ScaleCharToQuantum(*p++));
SetPixelBlue(q,ScaleCharToQuantum(*p++));
SetPixelAlpha(q,ScaleCharToQuantum(*p++));
}
else
{
SetPixelRed(q,0);
SetPixelGreen(q,0);
SetPixelBlue(q,0);
SetPixelAlpha(q,0);
}
q++;
}
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;
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));
(void) WebPMuxGetFeatures(mux,&webp_flags);
if ((webp_flags & ICCP_FLAG) &&
(WebPMuxGetChunk(mux,"ICCP",&chunk) == WEBP_MUX_OK))
if (chunk.size != 0)
{
profile=BlobToStringInfo(chunk.bytes,chunk.size);
if (profile != (StringInfo *) NULL)
{
SetImageProfile(image,"ICC",profile);
profile=DestroyStringInfo(profile);
}
}
if ((webp_flags & EXIF_FLAG) &&
(WebPMuxGetChunk(mux,"EXIF",&chunk) == WEBP_MUX_OK))
if (chunk.size != 0)
{
WebPMuxGetChunk(mux,"EXIF",&chunk);
profile=BlobToStringInfo(chunk.bytes,chunk.size);
if (profile != (StringInfo *) NULL)
{
SetImageProfile(image,"EXIF",profile);
profile=DestroyStringInfo(profile);
}
}
if ((webp_flags & XMP_FLAG) &&
(WebPMuxGetChunk(mux,"XMP ",&chunk) == WEBP_MUX_OK))
if (chunk.size != 0)
{
profile=BlobToStringInfo(chunk.bytes,chunk.size);
if (profile != (StringInfo *) NULL)
{
SetImageProfile(image,"XMP",profile);
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);
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;
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);
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=SetMagickInfo("WEBP");
#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->description=ConstantString("WebP Image Format");
entry->mime_type=ConstantString("image/webp");
entry->seekable_stream=MagickTrue;
#if !defined(MAGICKCORE_WEBPMUX_DELEGATE)
entry->adjoin=MagickFalse;
#endif
entry->magick_module=ConstantString("WEBP");
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
typedef struct PictureMemory {
MemoryInfo *pixel_info;
struct PictureMemory *next;
} PictureMemory;
static MagickBooleanType WriteSingleWEBPImage(const ImageInfo *image_info,
Image *image,WebPPicture *picture,PictureMemory *picture_memory,
ExceptionInfo *exception)
{
MagickBooleanType
status = MagickFalse;
uint32_t
*magick_restrict q;
ssize_t
y;
#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.
*/
if (IssRGBCompatibleColorspace(image->colorspace) == MagickFalse)
(void) TransformImageColorspace(image,sRGBColorspace);
picture_memory->pixel_info=AcquireVirtualMemory(image->columns,image->rows*
sizeof(*(picture->argb)));
if (picture_memory->pixel_info == (MemoryInfo *) NULL)
ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
picture->argb=(uint32_t *) GetVirtualMemoryBlob(picture_memory->pixel_info);
/*
Convert image to WebP raster pixels.
*/
q=picture->argb;
for (y=0; y < (ssize_t) image->rows; y++)
{
const PixelPacket
*magick_restrict p;
ssize_t
x;
p=GetVirtualPixels(image,0,y,image->columns,1,exception);
if (p == (const PixelPacket *) NULL)
break;
for (x=0; x < (ssize_t) image->columns; x++)
{
*q++=(uint32_t) (image->matte != MagickFalse ? (uint32_t)
ScaleQuantumToChar(GetPixelAlpha(p)) << 24 : 0xff000000) |
((uint32_t) ScaleQuantumToChar(GetPixelRed(p)) << 16) |
((uint32_t) ScaleQuantumToChar(GetPixelGreen(p)) << 8) |
((uint32_t) ScaleQuantumToChar(GetPixelBlue(p)));
p++;
}
status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
image->rows);
if (status == MagickFalse)
break;
}
return status;
}
#if defined(MAGICKCORE_WEBPMUX_DELEGATE)
static void FreePictureMemoryList (PictureMemory* head) {
PictureMemory* next;
while(head != NULL) {
next = head->next;
if(head->pixel_info != NULL)
RelinquishVirtualMemory(head->pixel_info);
free(head);
head = next;
}
}
static MagickBooleanType WriteAnimatedWEBPImage(const ImageInfo *image_info,
Image *image,WebPConfig *configure,WebPMemoryWriter *writer_info,
ExceptionInfo *exception)
{
Image
*first_image;
PictureMemory
*current,
*head;
size_t
effective_delta = 0,
frame_timestamp = 0;
WebPAnimEncoder
*enc;
WebPAnimEncoderOptions
enc_options;
WebPData
webp_data;
WebPPicture
picture;
WebPAnimEncoderOptionsInit(&enc_options);
if (image_info->verbose)
enc_options.verbose = 1;
image=CoalesceImages(image, exception);
first_image=image;
enc=WebPAnimEncoderNew((int) image->page.width,(int) image->page.height,
&enc_options);
head=(PictureMemory *) calloc(sizeof(*head),1);
current=head;
while (image != NULL)
{
if (WebPPictureInit(&picture) == 0)
ThrowWriterException(ResourceLimitError,"UnableToEncodeImageFile");
WriteSingleWEBPImage(image_info, image, &picture, current, exception);
effective_delta = image->delay*1000*PerceptibleReciprocal(
image->ticks_per_second);
if (effective_delta < 10)
effective_delta = 100; /* Consistent with gif2webp */
frame_timestamp+=effective_delta;
WebPAnimEncoderAdd(enc,&picture,(int) frame_timestamp,configure);
image = GetNextImageInList(image);
current->next=(PictureMemory *) calloc(sizeof(*head), 1);
current = current->next;
}
webp_data.bytes=writer_info->mem;
webp_data.size=writer_info->size;
WebPAnimEncoderAssemble(enc, &webp_data);
WebPMemoryWriterClear(writer_info);
writer_info->size=webp_data.size;
writer_info->mem=(unsigned char *) webp_data.bytes;
WebPAnimEncoderDelete(enc);
DestroyImageList(first_image);
FreePictureMemoryList(head);
return(MagickTrue);
}
#endif
static MagickBooleanType WriteWEBPImage(const ImageInfo *image_info,
Image *image)
{
const char
*value;
int
webp_status;
MagickBooleanType
status;
WebPAuxStats
statistics;
WebPConfig
configure;
#if defined(MAGICKCORE_WEBPMUX_DELEGATE)
WebPMemoryWriter
writer_info;
#endif
WebPPicture
picture;
PictureMemory
memory = {0};
/*
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,&image->exception);
if (status == MagickFalse)
return(status);
if (WebPConfigInit(&configure) == 0)
ThrowWriterException(ResourceLimitError,"UnableToEncodeImageFile");
if (WebPPictureInit(&picture) == 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
picture.stats=(&statistics);
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");
WriteSingleWEBPImage(image_info,image,&picture,&memory,&image->exception);
#if defined(MAGICKCORE_WEBPMUX_DELEGATE)
if ((image_info->adjoin != MagickFalse) &&
(GetPreviousImageInList(image) == (Image *) NULL) &&
(GetNextImageInList(image) != (Image *) NULL) &&
(image->iterations != 1))
WriteAnimatedWEBPImage(image_info,image,&configure,&writer_info,&image->exception);
#endif
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(&image->exception,GetMagickModule(),CorruptImageError,
(char *) message,"`%s'",image->filename);
}
#if defined(MAGICKCORE_WEBPMUX_DELEGATE)
{
const StringInfo
*profile;
WebPData
chunk,
image_chunk;
WebPMux
*mux;
WebPMuxError
mux_error;
/*
Set image profiles (if any).
*/
image_chunk.bytes=writer_info.mem;
image_chunk.size=writer_info.size;
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);
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(profile)+6;
chunk.size-=6;
}
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(&image->exception,GetMagickModule(),
ResourceLimitError,"UnableToEncodeImageFile","`%s'",image->filename);
if (chunk.size != 0)
{
WebPData
picture_profiles;
/*
Replace original container with image profile (if any).
*/
picture_profiles.bytes=writer_info.mem;
picture_profiles.size=writer_info.size;
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
(void) CloseBlob(image);
RelinquishVirtualMemory(memory.pixel_info);
return(webp_status == 0 ? MagickFalse : MagickTrue);
}
#endif