625 lines
22 KiB
C
625 lines
22 KiB
C
/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% M M PPPP EEEEE GGGG %
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% MM MM P P E G %
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% M M M PPPP EEE G GG %
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% M M P E G G %
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% M M P EEEEE GGGG %
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% %
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% %
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% Read/Write MPEG Image Format %
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% %
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% Software Design %
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% John Cristy %
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% July 1999 %
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% %
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% %
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% Copyright 1999-2013 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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% http://www.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 "magick/studio.h"
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#include "magick/blob.h"
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#include "magick/blob-private.h"
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#include "magick/constitute.h"
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#include "magick/delegate.h"
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#include "magick/exception.h"
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#include "magick/exception-private.h"
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#include "magick/geometry.h"
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#include "magick/image.h"
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#include "magick/image-private.h"
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#include "magick/layer.h"
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#include "magick/list.h"
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#include "magick/log.h"
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#include "magick/magick.h"
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#include "magick/memory_.h"
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#include "magick/pixel-accessor.h"
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#include "magick/quantum-private.h"
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#include "magick/resource_.h"
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#include "magick/static.h"
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#include "magick/string_.h"
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#include "magick/module.h"
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#include "magick/transform.h"
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#include "magick/utility.h"
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#include "magick/utility-private.h"
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/*
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Forward declarations.
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*/
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static MagickBooleanType
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WriteMPEGImage(const ImageInfo *image_info,Image *image);
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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 A V I %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% IsAVI() returns MagickTrue if the image format type, identified by the
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% magick string, is Audio/Video Interleaved file format.
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%
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% The format of the IsAVI method is:
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%
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% size_t IsAVI(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 IsAVI(const unsigned char *magick,const size_t length)
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{
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if (length < 4)
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return(MagickFalse);
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if (memcmp(magick,"RIFF",4) == 0)
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return(MagickTrue);
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return(MagickFalse);
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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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% I s M P E G %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% IsMPEG() returns MagickTrue if the image format type, identified by the
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% magick string, is MPEG.
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%
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% The format of the IsMPEG method is:
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%
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% MagickBooleanType IsMPEG(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 IsMPEG(const unsigned char *magick,const size_t length)
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{
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if (length < 4)
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return(MagickFalse);
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if (memcmp(magick,"\000\000\001\263",4) == 0)
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return(MagickTrue);
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return(MagickFalse);
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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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% R e a d M P E G 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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% ReadMPEGImage() reads an binary file in the MPEG video stream format
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% and returns it. It allocates the memory necessary for the new Image
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% structure and returns a pointer to the new image.
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%
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% The format of the ReadMPEGImage method is:
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%
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% Image *ReadMPEGImage(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 Image *ReadMPEGImage(const ImageInfo *image_info,
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ExceptionInfo *exception)
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{
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#define ReadMPEGIntermediateFormat "pam"
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Image
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*image,
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*images;
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ImageInfo
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*read_info;
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MagickBooleanType
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status;
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/*
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Open image file.
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*/
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assert(image_info != (const ImageInfo *) NULL);
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assert(image_info->signature == MagickSignature);
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if (image_info->debug != MagickFalse)
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(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
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image_info->filename);
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assert(exception != (ExceptionInfo *) NULL);
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assert(exception->signature == MagickSignature);
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image=AcquireImage(image_info);
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status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
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if (status == MagickFalse)
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{
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image=DestroyImageList(image);
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return((Image *) NULL);
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}
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(void) CloseBlob(image);
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(void) DestroyImageList(image);
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/*
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Convert MPEG to PAM with delegate.
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*/
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read_info=CloneImageInfo(image_info);
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image=AcquireImage(image_info);
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(void) InvokeDelegate(read_info,image,"mpeg:decode",(char *) NULL,exception);
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image=DestroyImage(image);
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(void) FormatLocaleString(read_info->filename,MaxTextExtent,"%s.%s",
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read_info->unique,ReadMPEGIntermediateFormat);
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images=ReadImage(read_info,exception);
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(void) RelinquishUniqueFileResource(read_info->filename);
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read_info=DestroyImageInfo(read_info);
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return(images);
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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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% R e g i s t e r M P E G 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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% RegisterMPEGImage() adds attributes for the MPEG image format to
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% the list of supported formats. The attributes include the image format
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% tag, a method to read and/or write the format, whether the format
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% supports the saving of more than one frame to the same file or blob,
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% whether the format supports native in-memory I/O, and a brief
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% description of the format.
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%
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% The format of the RegisterMPEGImage method is:
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%
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% size_t RegisterMPEGImage(void)
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%
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*/
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ModuleExport size_t RegisterMPEGImage(void)
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{
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MagickInfo
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*entry;
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entry=SetMagickInfo("AVI");
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entry->decoder=(DecodeImageHandler *) ReadMPEGImage;
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entry->magick=(IsImageFormatHandler *) IsAVI;
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entry->blob_support=MagickFalse;
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entry->description=ConstantString("Microsoft Audio/Visual Interleaved");
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entry->module=ConstantString("MPEG");
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(void) RegisterMagickInfo(entry);
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entry=SetMagickInfo("MOV");
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entry->decoder=(DecodeImageHandler *) ReadMPEGImage;
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entry->encoder=(EncodeImageHandler *) WriteMPEGImage;
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entry->magick=(IsImageFormatHandler *) IsMPEG;
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entry->blob_support=MagickFalse;
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entry->description=ConstantString("MPEG Video Stream");
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entry->module=ConstantString("MPEG");
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(void) RegisterMagickInfo(entry);
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entry=SetMagickInfo("MPEG");
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entry->decoder=(DecodeImageHandler *) ReadMPEGImage;
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entry->encoder=(EncodeImageHandler *) WriteMPEGImage;
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entry->magick=(IsImageFormatHandler *) IsMPEG;
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entry->blob_support=MagickFalse;
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entry->description=ConstantString("MPEG Video Stream");
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entry->module=ConstantString("MPEG");
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(void) RegisterMagickInfo(entry);
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entry=SetMagickInfo("MPG");
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entry->decoder=(DecodeImageHandler *) ReadMPEGImage;
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entry->encoder=(EncodeImageHandler *) WriteMPEGImage;
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entry->magick=(IsImageFormatHandler *) IsMPEG;
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entry->blob_support=MagickFalse;
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entry->description=ConstantString("MPEG Video Stream");
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entry->module=ConstantString("MPEG");
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(void) RegisterMagickInfo(entry);
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entry=SetMagickInfo("MP4");
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entry->decoder=(DecodeImageHandler *) ReadMPEGImage;
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entry->encoder=(EncodeImageHandler *) WriteMPEGImage;
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entry->magick=(IsImageFormatHandler *) IsMPEG;
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entry->blob_support=MagickFalse;
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entry->description=ConstantString("MPEG-4 Video Stream");
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entry->module=ConstantString("MPEG");
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(void) RegisterMagickInfo(entry);
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entry=SetMagickInfo("M2V");
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entry->decoder=(DecodeImageHandler *) ReadMPEGImage;
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entry->encoder=(EncodeImageHandler *) WriteMPEGImage;
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entry->magick=(IsImageFormatHandler *) IsMPEG;
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entry->blob_support=MagickFalse;
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entry->description=ConstantString("MPEG Video Stream");
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entry->module=ConstantString("MPEG");
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(void) RegisterMagickInfo(entry);
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entry=SetMagickInfo("M4V");
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entry->decoder=(DecodeImageHandler *) ReadMPEGImage;
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entry->encoder=(EncodeImageHandler *) WriteMPEGImage;
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entry->magick=(IsImageFormatHandler *) IsMPEG;
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entry->blob_support=MagickFalse;
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entry->description=ConstantString("Raw MPEG-4 Video");
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entry->module=ConstantString("MPEG");
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(void) RegisterMagickInfo(entry);
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entry=SetMagickInfo("WMV");
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entry->decoder=(DecodeImageHandler *) ReadMPEGImage;
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entry->encoder=(EncodeImageHandler *) WriteMPEGImage;
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entry->magick=(IsImageFormatHandler *) IsMPEG;
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entry->blob_support=MagickFalse;
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entry->description=ConstantString("Windows Media Video");
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entry->module=ConstantString("MPEG");
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(void) RegisterMagickInfo(entry);
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return(MagickImageCoderSignature);
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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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% U n r e g i s t e r M P E G 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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% UnregisterMPEGImage() removes format registrations made by the
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% BIM module from the list of supported formats.
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%
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% The format of the UnregisterBIMImage method is:
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%
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% UnregisterMPEGImage(void)
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%
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*/
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ModuleExport void UnregisterMPEGImage(void)
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{
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(void) UnregisterMagickInfo("WMV");
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(void) UnregisterMagickInfo("M4V");
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(void) UnregisterMagickInfo("M2V");
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(void) UnregisterMagickInfo("MP4");
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(void) UnregisterMagickInfo("MPG");
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(void) UnregisterMagickInfo("MPEG");
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(void) UnregisterMagickInfo("MOV");
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(void) UnregisterMagickInfo("AVI");
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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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% W r i t e M P E G 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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% WriteMPEGImage() writes an image to a file in MPEG video stream format.
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% Lawrence Livermore National Laboratory (LLNL) contributed code to adjust
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% the MPEG parameters to correspond to the compression quality setting.
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%
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% The format of the WriteMPEGImage method is:
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%
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% MagickBooleanType WriteMPEGImage(const ImageInfo *image_info,
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% Image *image)
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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 image: The image.
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%
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*/
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static inline double MagickMax(const double x,const double y)
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{
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if (x > y)
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return(x);
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return(y);
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}
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static inline double MagickMin(const double x,const double y)
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{
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if (x < y)
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return(x);
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return(y);
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}
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static MagickBooleanType CopyDelegateFile(const char *source,
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const char *destination)
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{
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int
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destination_file,
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source_file;
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MagickBooleanType
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status;
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register size_t
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i;
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size_t
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length,
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quantum;
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ssize_t
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count;
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struct stat
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attributes;
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unsigned char
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*buffer;
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/*
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Return if destination file already exists and is not empty.
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*/
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assert(source != (const char *) NULL);
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assert(destination != (char *) NULL);
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status=GetPathAttributes(destination,&attributes);
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if ((status != MagickFalse) && (attributes.st_size != 0))
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return(MagickTrue);
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/*
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Copy source file to destination.
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*/
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destination_file=open_utf8(destination,O_WRONLY | O_BINARY | O_CREAT,S_MODE);
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if (destination_file == -1)
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return(MagickFalse);
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source_file=open_utf8(source,O_RDONLY | O_BINARY,0);
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if (source_file == -1)
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{
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(void) close(destination_file);
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return(MagickFalse);
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}
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quantum=(size_t) MagickMaxBufferExtent;
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if ((fstat(source_file,&attributes) == 0) && (attributes.st_size != 0))
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quantum=(size_t) MagickMin((double) attributes.st_size,
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MagickMaxBufferExtent);
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buffer=(unsigned char *) AcquireQuantumMemory(quantum,sizeof(*buffer));
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if (buffer == (unsigned char *) NULL)
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{
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(void) close(source_file);
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(void) close(destination_file);
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return(MagickFalse);
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}
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length=0;
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for (i=0; ; i+=count)
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{
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count=(ssize_t) read(source_file,buffer,quantum);
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if (count <= 0)
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break;
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length=(size_t) count;
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count=(ssize_t) write(destination_file,buffer,length);
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if ((size_t) count != length)
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break;
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}
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(void) close(destination_file);
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(void) close(source_file);
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buffer=(unsigned char *) RelinquishMagickMemory(buffer);
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return(i != 0 ? MagickTrue : MagickFalse);
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}
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static MagickBooleanType WriteMPEGImage(const ImageInfo *image_info,
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Image *image)
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{
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#define WriteMPEGIntermediateFormat "jpg"
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char
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basename[MaxTextExtent],
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filename[MaxTextExtent];
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double
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delay;
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Image
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*coalesce_image;
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ImageInfo
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*write_info;
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int
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file;
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MagickBooleanType
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status;
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register Image
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*p;
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register ssize_t
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i;
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size_t
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count,
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length,
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scene;
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unsigned char
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*blob;
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/*
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Open output image file.
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*/
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assert(image_info != (const ImageInfo *) NULL);
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assert(image_info->signature == MagickSignature);
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assert(image != (Image *) NULL);
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assert(image->signature == MagickSignature);
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if (image->debug != MagickFalse)
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(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
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status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception);
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if (status == MagickFalse)
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return(status);
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(void) CloseBlob(image);
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/*
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Write intermediate files.
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*/
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coalesce_image=CoalesceImages(image,&image->exception);
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if (coalesce_image == (Image *) NULL)
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return(MagickFalse);
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file=AcquireUniqueFileResource(basename);
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if (file != -1)
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file=close(file)-1;
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(void) FormatLocaleString(coalesce_image->filename,MaxTextExtent,"%s",
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basename);
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count=0;
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write_info=CloneImageInfo(image_info);
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for (p=coalesce_image; p != (Image *) NULL; p=GetNextImageInList(p))
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{
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char
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previous_image[MaxTextExtent];
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blob=(unsigned char *) NULL;
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length=0;
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scene=p->scene;
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delay=100.0*p->delay/MagickMax(1.0*p->ticks_per_second,1.0);
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for (i=0; i < (ssize_t) MagickMax((1.0*delay+1.0)/3.0,1.0); i++)
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{
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p->scene=count;
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count++;
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status=MagickFalse;
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switch (i)
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{
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case 0:
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{
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Image
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*frame;
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(void) FormatLocaleString(p->filename,MaxTextExtent,"%s%.20g.%s",
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basename,(double) p->scene,WriteMPEGIntermediateFormat);
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(void) FormatLocaleString(filename,MaxTextExtent,"%s%.20g.%s",
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basename,(double) p->scene,WriteMPEGIntermediateFormat);
|
||
(void) FormatLocaleString(previous_image,MaxTextExtent,
|
||
"%s%.20g.%s",basename,(double) p->scene,
|
||
WriteMPEGIntermediateFormat);
|
||
frame=CloneImage(p,0,0,MagickTrue,&p->exception);
|
||
if (frame == (Image *) NULL)
|
||
break;
|
||
status=WriteImage(write_info,frame);
|
||
frame=DestroyImage(frame);
|
||
break;
|
||
}
|
||
case 1:
|
||
{
|
||
blob=(unsigned char *) FileToBlob(previous_image,~0UL,&length,
|
||
&image->exception);
|
||
}
|
||
default:
|
||
{
|
||
(void) FormatLocaleString(filename,MaxTextExtent,"%s%.20g.%s",
|
||
basename,(double) p->scene,WriteMPEGIntermediateFormat);
|
||
if (length > 0)
|
||
status=BlobToFile(filename,blob,length,&image->exception);
|
||
break;
|
||
}
|
||
}
|
||
if (image->debug != MagickFalse)
|
||
{
|
||
if (status != MagickFalse)
|
||
(void) LogMagickEvent(CoderEvent,GetMagickModule(),
|
||
"%.20g. Wrote %s file for scene %.20g:",(double) i,
|
||
WriteMPEGIntermediateFormat,(double) p->scene);
|
||
else
|
||
(void) LogMagickEvent(CoderEvent,GetMagickModule(),
|
||
"%.20g. Failed to write %s file for scene %.20g:",(double) i,
|
||
WriteMPEGIntermediateFormat,(double) p->scene);
|
||
(void) LogMagickEvent(CoderEvent,GetMagickModule(),"%s",filename);
|
||
}
|
||
}
|
||
p->scene=scene;
|
||
if (blob != (unsigned char *) NULL)
|
||
blob=(unsigned char *) RelinquishMagickMemory(blob);
|
||
if (status == MagickFalse)
|
||
break;
|
||
}
|
||
/*
|
||
Convert JPEG to MPEG.
|
||
*/
|
||
(void) CopyMagickString(coalesce_image->magick_filename,basename,
|
||
MaxTextExtent);
|
||
(void) CopyMagickString(coalesce_image->filename,basename,MaxTextExtent);
|
||
GetPathComponent(image_info->filename,ExtensionPath,coalesce_image->magick);
|
||
if (*coalesce_image->magick == '\0')
|
||
(void) CopyMagickString(coalesce_image->magick,image->magick,MaxTextExtent);
|
||
status=InvokeDelegate(write_info,coalesce_image,(char *) NULL,"mpeg:encode",
|
||
&image->exception);
|
||
(void) FormatLocaleString(write_info->filename,MaxTextExtent,"%s.%s",
|
||
write_info->unique,coalesce_image->magick);
|
||
status=CopyDelegateFile(write_info->filename,image->filename);
|
||
(void) RelinquishUniqueFileResource(write_info->filename);
|
||
write_info=DestroyImageInfo(write_info);
|
||
/*
|
||
Relinquish resources.
|
||
*/
|
||
count=0;
|
||
for (p=coalesce_image; p != (Image *) NULL; p=GetNextImageInList(p))
|
||
{
|
||
delay=100.0*p->delay/MagickMax(1.0*p->ticks_per_second,1.0);
|
||
for (i=0; i < (ssize_t) MagickMax((1.0*delay+1.0)/3.0,1.0); i++)
|
||
{
|
||
(void) FormatLocaleString(p->filename,MaxTextExtent,"%s%.20g.%s",
|
||
basename,(double) count++,WriteMPEGIntermediateFormat);
|
||
(void) RelinquishUniqueFileResource(p->filename);
|
||
}
|
||
(void) CopyMagickString(p->filename,image_info->filename,MaxTextExtent);
|
||
}
|
||
(void) RelinquishUniqueFileResource(basename);
|
||
coalesce_image=DestroyImageList(coalesce_image);
|
||
if (image->debug != MagickFalse)
|
||
(void) LogMagickEvent(CoderEvent,GetMagickModule(),"exit");
|
||
return(status);
|
||
}
|