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https://github.com/ImageMagick/ImageMagick/issues/8375#issuecomment-3369175313

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Cristy
2025-10-05 12:51:48 -04:00
parent bb90380368
commit d989021160
1 changed files with 5 additions and 20 deletions
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coders/jpeg.c
+5 -20
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@@ -1184,27 +1184,12 @@ static Image *ReadOneJPEGImage(const ImageInfo *image_info,
units=0;
if (jpeg_info->saw_JFIF_marker != 0)
{
if (jpeg_info->X_density != 0)
image->resolution.x=(double) jpeg_info->X_density;
if (jpeg_info->Y_density != 0)
image->resolution.y=(double) jpeg_info->Y_density;
if (jpeg_info->density_unit != 0)
{
/*
Units are defined: 1 = DPI, 2 = DPC.
*/
image->resolution.x=(double) jpeg_info->X_density;
image->resolution.y=(double) jpeg_info->Y_density;
units=(size_t) jpeg_info->density_unit;
}
else
{
/*
Optionally scale based on aspect ratio.
*/
if ((jpeg_info->X_density != 0) && (jpeg_info->Y_density != 0))
{
double aspect_ratio = (double) jpeg_info->Y_density*
MagickSafeReciprocal((double) jpeg_info->X_density);
image->resolution.y=image->resolution.x*aspect_ratio;
}
}
units=(size_t) jpeg_info->density_unit;
}
if (units == 1)
image->units=PixelsPerInchResolution;