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|
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% M M PPPP EEEEE GGGG %
% MM MM P P E G %
% M M M PPPP EEE G GG %
% M M P E G G %
% M M P EEEEE GGGG %
% %
% %
% Read/Write ImageMagick Image Format. %
% %
% %
% Software Design %
% John Cristy %
% July 1999 %
% %
% %
% Copyright (C) 2002 ImageMagick Studio, a non-profit organization dedicated %
% to making software imaging solutions freely available. %
% %
% Permission is hereby granted, free of charge, to any person obtaining a %
% copy of this software and associated documentation files ("ImageMagick"), %
% to deal in ImageMagick without restriction, including without limitation %
% the rights to use, copy, modify, merge, publish, distribute, sublicense, %
% and/or sell copies of ImageMagick, and to permit persons to whom the %
% ImageMagick is furnished to do so, subject to the following conditions: %
% %
% The above copyright notice and this permission notice shall be included in %
% all copies or substantial portions of ImageMagick. %
% %
% The software is provided "as is", without warranty of any kind, express or %
% implied, including but not limited to the warranties of merchantability, %
% fitness for a particular purpose and noninfringement. In no event shall %
% ImageMagick Studio be liable for any claim, damages or other liability, %
% whether in an action of contract, tort or otherwise, arising from, out of %
% or in connection with ImageMagick or the use or other dealings in %
% ImageMagick. %
% %
% Except as contained in this notice, the name of the ImageMagick Studio %
% shall not be used in advertising or otherwise to promote the sale, use or %
% other dealings in ImageMagick without prior written authorization from the %
% ImageMagick Studio. %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%
*/
/*
Include declarations.
*/
#include "magick.h"
#include "define.h"
/*
Forward declarations.
*/
static unsigned int
WriteMPEGImage(const ImageInfo *image_info,Image *image);
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% I s M P E G %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Method IsMPEG returns True if the image format type, identified by the
% magick string, is MPEG.
%
% The format of the IsMPEG method is:
%
% unsigned int IsMPEG(const unsigned char *magick,const size_t length)
%
% A description of each parameter follows:
%
% o status: Method IsMPEG returns True if the image format type is MPEG.
%
% o magick: This string is generally the first few bytes of an image file
% or blob.
%
% o length: Specifies the length of the magick string.
%
%
*/
static unsigned int IsMPEG(const unsigned char *magick,const size_t length)
{
if (length < 4)
return(False);
if (memcmp(magick,"\000\000\001\263",4) == 0)
return(True);
return(False);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e a d M P E G I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Method ReadMPEGImage reads an binary file in the MPEG video stream format
% and returns it. It allocates the memory necessary for the new Image
% structure and returns a pointer to the new image. This method differs from
% the other decoder methods in that only the Photoshop resource (MPEG)
% information is useful in the returned image.
%
% The format of the ReadMPEGImage method is:
%
% Image *ReadMPEGImage(const ImageInfo *image_info,
% ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o image: Method ReadMPEGImage returns a pointer to the image after
% reading. A null image is returned if there is a memory shortage or if
% the image cannot be read.
%
% o image_info: Specifies a pointer to an ImageInfo structure.
%
% o exception: return any errors or warnings in this structure.
%
%
*/
static Image *ReadMPEGImage(const ImageInfo *image_info,
ExceptionInfo *exception)
{
Image
*image,
*next_image;
ImageInfo
*clone_info;
register Image
*p;
register long
i;
unsigned int
status;
/*
Open image file.
*/
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickSignature);
assert(exception != (ExceptionInfo *) NULL);
assert(exception->signature == MagickSignature);
image=AllocateImage(image_info);
status=OpenBlob(image_info,image,ReadBinaryType,exception);
if (status == False)
ThrowReaderException(FileOpenWarning,"Unable to open file",image);
CloseBlob(image);
/*
Convert MPEG to PPM with delegate.
*/
image=AllocateImage(image_info);
clone_info=CloneImageInfo(image_info);
(void) InvokeDelegate(clone_info,image,"mpeg-decode",(char *) NULL,exception);
DestroyImage(image);
/*
Read PPM files.
*/
image=(Image *) NULL;
for (i=(long) clone_info->subimage; ; i++)
{
FormatString(clone_info->filename,"%.1024s%d.ppm",clone_info->unique,i);
if (!IsAccessible(clone_info->filename))
break;
next_image=ReadImage(clone_info,exception);
if (next_image == (Image *) NULL)
break;
next_image->scene=i;
if (image == (Image *) NULL)
image=next_image;
else
{
/*
Link image into image list.
*/
for (p=image; p->next != (Image *) NULL; p=p->next);
next_image->previous=p;
p->next=next_image;
}
if (clone_info->subrange != 0)
if (i >= (long) (clone_info->subimage+clone_info->subrange-1))
break;
}
if (image != (Image *) NULL)
while (image->previous != (Image *) NULL)
image=image->previous;
/*
Free resources.
*/
for (i=0; ; i++)
{
FormatString(clone_info->filename,"%.1024s%d.ppm",clone_info->unique,i);
if (!IsAccessible(clone_info->filename))
break;
(void) remove(clone_info->filename);
}
DestroyImageInfo(clone_info);
return(image);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e g i s t e r M P E G I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Method RegisterMPEGImage adds attributes for the MPEG 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 RegisterMPEGImage method is:
%
% RegisterMPEGImage(void)
%
*/
ModuleExport void RegisterMPEGImage(void)
{
MagickInfo
*entry;
entry=SetMagickInfo("MPEG");
entry->decoder=ReadMPEGImage;
entry->encoder=WriteMPEGImage;
entry->magick=IsMPEG;
entry->description=AcquireString("MPEG Video Stream");
entry->module=AcquireString("MPEG");
(void) RegisterMagickInfo(entry);
entry=SetMagickInfo("MPG");
entry->decoder=ReadMPEGImage;
entry->encoder=WriteMPEGImage;
entry->magick=IsMPEG;
entry->description=AcquireString("MPEG Video Stream");
entry->module=AcquireString("MPEG");
(void) RegisterMagickInfo(entry);
entry=SetMagickInfo("M2V");
entry->decoder=ReadMPEGImage;
entry->encoder=WriteMPEGImage;
entry->magick=IsMPEG;
entry->description=AcquireString("MPEG Video Stream");
entry->module=AcquireString("MPEG");
(void) RegisterMagickInfo(entry);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% U n r e g i s t e r M P E G I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Method UnregisterMPEGImage removes format registrations made by the
% BIM module from the list of supported formats.
%
% The format of the UnregisterBIMImage method is:
%
% UnregisterMPEGImage(void)
%
*/
ModuleExport void UnregisterMPEGImage(void)
{
(void) UnregisterMagickInfo("MPEG");
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% W r i t e M P E G I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Method WriteMPEGImage writes an image to a file in MPEG video stream format.
% Lawrence Livermore National Laboratory (LLNL) contributed code to adjust
% the MPEG parameters to correspond to the compression quality setting.
%
% The format of the WriteMPEGImage method is:
%
% unsigned int WriteMPEGImage(const ImageInfo *image_info,Image *image)
%
% A description of each parameter follows.
%
% o status: Method WriteMPEGImage return True if the image is written.
% False is returned is there is a memory shortage or if the image file
% fails to write.
%
% o image_info: Specifies a pointer to an ImageInfo structure.
%
% o image: A pointer to a Image structure.
%
%
*/
static unsigned int WriteMPEGParameterFiles(const ImageInfo *image_info,
Image *image)
{
char
filename[MaxTextExtent];
double
q;
FILE
*file,
*parameter_file;
int
quant;
register Image
*p;
register int
i;
static int
q_matrix[]=
{
8, 16, 19, 22, 26, 27, 29, 34,
16, 16, 22, 24, 27, 29, 34, 37,
19, 22, 26, 27, 29, 34, 34, 38,
22, 22, 26, 27, 29, 34, 37, 40,
22, 26, 27, 29, 32, 35, 40, 48,
26, 27, 29, 32, 35, 40, 48, 58,
26, 27, 29, 34, 38, 46, 56, 69,
27, 29, 35, 38, 46, 56, 69, 83
};
unsigned int
mpeg;
unsigned long
count;
/*
Write parameter file (see mpeg2encode documentation for details).
*/
file=fopen(image_info->unique,"w");
if (file == (FILE *) NULL)
return(False);
(void) fprintf(file,"MPEG\n"); /* comment */
(void) fprintf(file,"%.1024s.%%d\n",image->filename); /* source frame file */
(void) fprintf(file,"-\n"); /* reconstructed frame file */
if (image_info->quality == DefaultCompressionQuality)
(void) fprintf(file,"-\n"); /* default intra quant matrix */
else
{
/*
Write intra quant matrix file.
*/
FormatString(filename,"%.1024s.iqm",image_info->unique);
(void) fprintf(file,"%s\n",filename);
parameter_file=fopen(filename,"w");
if (parameter_file == (FILE *) NULL)
return(False);
if (image_info->quality < DefaultCompressionQuality)
{
q=Max((DefaultCompressionQuality-image_info->quality)/8.0,1.0);
for (i=0; i < 64; i++)
{
quant=(int) Min(Max(q*q_matrix[i]+0.5,1.0),255.0);
(void) fprintf(parameter_file," %d",quant);
if ((i % 8) == 7)
(void) fprintf(parameter_file,"\n");
}
}
else
{
q=Max((image_info->quality-DefaultCompressionQuality)*2.0,1.0);
for (i=0; i < 64; i++)
{
quant=(int) Min(Max(q_matrix[i]/q,1.0),255.0);
(void) fprintf(parameter_file," %d",quant);
if ((i % 8) == 7)
(void) fprintf(parameter_file,"\n");
}
}
(void) fclose(parameter_file);
}
if (image_info->quality == DefaultCompressionQuality)
(void) fprintf(file,"-\n"); /* default non intra quant matrix */
else
{
/*
Write non intra quant matrix file.
*/
FormatString(filename,"%.1024s.niq",image_info->unique);
(void) fprintf(file,"%s\n",filename);
parameter_file=fopen(filename,"w");
if (parameter_file == (FILE *) NULL)
return(False);
q=Min(Max(66.0-(2*image_info->quality)/3.0,1.0),255);
for (i=0; i < 64; i++)
{
(void) fprintf(parameter_file," %d",(int) q);
if ((i % 8) == 7)
(void) fprintf(parameter_file,"\n");
}
(void) fclose(parameter_file);
}
(void) fprintf(file,"%.1024s.log\n",image_info->unique); /* statistics log */
(void) fprintf(file,"1\n"); /* input picture file format */
count=0;
for (p=image; p != (Image *) NULL; p=p->next)
count+=Max((p->delay+1)/3,1);
(void) fprintf(file,"%lu\n",count); /* number of frames */
(void) fprintf(file,"0\n"); /* number of first frame */
(void) fprintf(file,"00:00:00:00\n"); /* timecode of first frame */
mpeg=LocaleCompare(image->magick,"M2V") != 0;
if (image_info->quality > 98)
(void) fprintf(file,"1\n");
else
(void) fprintf(file,"%d\n",mpeg ? 12 : 15);
if (image_info->quality > 98)
(void) fprintf(file,"1\n");
else
(void) fprintf(file,"3\n");
(void) fprintf(file,"%d\n",mpeg ? 1 : 0); /* ISO/IEC 11172-2 stream */
(void) fprintf(file,"0\n"); /* select frame picture coding */
(void) fprintf(file,"%lu\n",image->columns+(image->columns & 0x01 ? 1 : 0));
(void) fprintf(file,"%lu\n",image->rows+(image->rows & 0x01 ? 1 : 0));
(void) fprintf(file,"%d\n",mpeg ? 8 : 2); /* aspect ratio */
(void) fprintf(file,"%d\n",mpeg ? 3 : 5); /* frame rate code */
(void) fprintf(file,"%.1f\n",mpeg ? 1152000.0 : 5000000.0); /* bit rate */
(void) fprintf(file,"%d\n",mpeg ? 20 : 112); /* vbv buffer size */
(void) fprintf(file,"0\n"); /* low delay */
(void) fprintf(file,"%d\n",mpeg ? 1 : 0); /* constrained parameter */
(void) fprintf(file,"%d\n",mpeg ? 4 : 1); /* profile ID */
(void) fprintf(file,"%d\n",mpeg ? 8 : 4); /* level ID */
(void) fprintf(file,"%d\n",mpeg ? 1 : 0); /* progressive sequence */
(void) fprintf(file,"1\n"); /* chrome format */
(void) fprintf(file,"%d\n",mpeg ? 1 : 2); /* video format */
(void) fprintf(file,"5\n"); /* color primaries */
(void) fprintf(file,"5\n"); /* transfer characteristics */
(void) fprintf(file,"%d\n",mpeg ? 5 : 4); /* matrix coefficients */
(void) fprintf(file,"%lu\n",image->columns+(image->columns & 0x01 ? 1 : 0));
(void) fprintf(file,"%lu\n",image->rows+(image->rows & 0x01 ? 1 : 0));
(void) fprintf(file,"0\n"); /* intra dc precision */
(void) fprintf(file,"%d\n",mpeg ? 0 : 1); /* top field */
(void) fprintf(file,"%d %d %d\n",mpeg ? 1 : 0,mpeg ? 1 : 0, mpeg ? 1 : 0);
(void) fprintf(file,"0 0 0\n"); /* concealment motion vector */
(void) fprintf(file,"%d %d %d\n",mpeg ? 0 : 1,mpeg ? 0 : 1,mpeg ? 0 : 1);
(void) fprintf(file,"%d 0 0\n",mpeg ? 0 : 1); /* intra vlc format */
(void) fprintf(file,"0 0 0\n"); /* alternate scan */
(void) fprintf(file,"0\n"); /* repeat first field */
(void) fprintf(file,"%d\n",mpeg ? 1 : 0); /* progressive frame */
(void) fprintf(file,"0\n"); /* intra slice refresh period */
(void) fprintf(file,"0\n"); /* reaction parameter */
(void) fprintf(file,"0\n"); /* initial average activity */
(void) fprintf(file,"0\n");
(void) fprintf(file,"0\n");
(void) fprintf(file,"0\n");
(void) fprintf(file,"0\n");
(void) fprintf(file,"0\n");
(void) fprintf(file,"0\n");
(void) fprintf(file,"2 2 11 11\n");
(void) fprintf(file,"1 1 3 3\n");
(void) fprintf(file,"1 1 7 7\n");
(void) fprintf(file,"1 1 7 7\n");
(void) fprintf(file,"1 1 3 3\n");
(void) fclose(file);
return(True);
}
static unsigned int WriteMPEGImage(const ImageInfo *image_info,Image *image)
{
char
basename[MaxTextExtent],
*blob,
filename[MaxTextExtent];
Image
*coalesce_image,
*next_image;
ImageInfo
*clone_info;
int
file;
register Image
*p;
register long
i;
size_t
length;
unsigned int
status;
unsigned long
count,
scene;
/*
Open output image file.
*/
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickSignature);
assert(image != (Image *) NULL);
assert(image->signature == MagickSignature);
status=OpenBlob(image_info,image,WriteBinaryType,&image->exception);
if (status == False)
ThrowWriterException(FileOpenWarning,"Unable to open file",image);
CloseBlob(image);
/*
Determine if the sequence of images have identical page info.
*/
coalesce_image=image;
for (next_image=image; next_image != (Image *) NULL; )
{
if ((image->columns != next_image->columns) ||
(image->rows != next_image->rows))
break;
if ((image->page.x != next_image->page.x) ||
(image->page.y != next_image->page.y))
break;
next_image=next_image->next;
}
if (next_image != (Image *) NULL)
{
coalesce_image=CoalesceImages(image,&image->exception);
if (coalesce_image == (Image *) NULL)
return(False);
}
/*
Write YUV files.
*/
TemporaryFilename(basename);
FormatString(coalesce_image->filename,basename);
clone_info=CloneImageInfo(image_info);
(void) strncpy(clone_info->unique,basename,MaxTextExtent-1);
status=WriteMPEGParameterFiles(clone_info,coalesce_image);
if (status == False)
{
if (coalesce_image != image)
DestroyImage(coalesce_image);
ThrowWriterException(DelegateWarning,"Unable to write MPEG parameters",
image)
}
count=0;
for (p=coalesce_image; p != (Image *) NULL; p=p->next)
{
blob=(char *) NULL;
length=0;
scene=p->scene;
for (i=0; i < (long) Max((p->delay+1)/3,1); i++)
{
p->scene=count++;
FormatString(p->filename,"%.1024s.%%d.yuv",basename);
switch ((int) i)
{
case 0:
{
status=WriteImage(clone_info,p);
FormatString(filename,"%.1024s.%lu.yuv",basename,p->scene);
break;
}
case 1:
blob=(char *) FileToBlob(filename,&length,&image->exception);
default:
{
FormatString(filename,"%.1024s.%lu.yuv",basename,p->scene);
file=open(filename,O_WRONLY | O_CREAT | O_BINARY,0777);
if (file == -1)
break;
(void) write(file,blob,length);
(void) close(file);
break;
}
}
}
p->scene=scene;
if (blob != (char *) NULL)
LiberateMemory((void **) &blob);
if (status == False)
break;
}
/*
Convert YUV to MPEG.
*/
(void) strncpy(coalesce_image->filename,clone_info->unique,MaxTextExtent-1);
status=InvokeDelegate(clone_info,coalesce_image,(char *) NULL,"mpeg-encode",
&image->exception);
DestroyImageInfo(clone_info);
/*
Free resources.
*/
count=0;
for (p=coalesce_image; p != (Image *) NULL; p=p->next)
{
for (i=0; i < (long) Max((p->delay+1)/3,1); i++)
{
FormatString(p->filename,"%.1024s.%lu.yuv",basename,count++);
(void) remove(p->filename);
}
(void) strncpy(p->filename,image_info->filename,MaxTextExtent-1);
}
(void) remove(basename);
FormatString(filename,"%.1024s.iqm",basename);
(void) remove(filename);
FormatString(filename,"%.1024s.niq",basename);
(void) remove(filename);
FormatString(filename,"%.1024s.log",basename);
(void) remove(filename);
if (coalesce_image != image)
DestroyImage(coalesce_image);
return(status);
}
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