/usr/lib/pike7.8/modules/_Image_JPEG.pmod is in pike7.8-image 7.8.866-8.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 | // -*- pike -*-
#pike __REAL_VERSION__
#if constant(.____Image_JPEG.Marker)
inherit .____Image_JPEG;
static object exif_flip_jpeg(object img, mapping exif)
{
if (!exif)
return img;
//Stdio.stderr->write("JPEG/EXIF: Orientation %O\n", exif->Orientation);
switch (exif->Orientation)
{
case "1": /* default orientation */
break;
case "2": /* flipped left-right */
img = img->mirrorx();
break;
case "3": /* rotated 180 */
img = img->rotate_cw()->rotate_cw();
break;
case "4": /* flipped up-down */
img = img->mirrory();
break;
case "5": /* rotated 90 clockwise, flipped left-right */
img = img->mirrorx()->rotate_ccw();
break;
case "6": /* rotated 270 clockwise */
img = img->rotate_cw();
break;
case "7": /* rotated 270 clockwise, flipped left-right */
img = img->mirrorx()->rotate_cw();
break;
case "8": /* rotated 90 clockwise */
img = img->rotate_ccw();
break;
default:
break;
}
return img;
}
object decode(string data, mapping|void options)
{
//Stdio.stderr->write("Image.JPEG overloaded decode.\r\n\n");
object img = ::decode(data, options || ([ ]) );
if (!img) // early exit if error
return img;
mapping exif = Standards.EXIF.get_properties(Stdio.FakeFile(data));
return exif_flip_jpeg(img, exif);
}
mapping _decode(string data, mapping|void options)
{
//Stdio.stderr->write("Image.JPEG overloaded _decode.\r\n\n");
mapping m = ::_decode(data, options || ([ ]) );
if (!m) // early exit if error
return m;
mapping exif = Standards.EXIF.get_properties(Stdio.FakeFile(data));
m->image = exif_flip_jpeg(m->image, exif);
if ((< "5", "6", "7", "8" >)[exif->Orientation])
{
/* If the image was flipped 90 or 270 degrees, we need to
* exchange the x/y metadata information.
*/
m->xsize = m->image->xsize;
m->ysize = m->image->ysize;
int tmp = m->x_density;
m->x_density = m->y_density;
m->y_density = tmp;
}
return m;
}
mapping raw_decode(string data, mapping|void options)
{
// Compatibility function to bypass the overloading of _decode.
//Stdio.stderr->write("Image.JPEG overloaded _decode.\r\n\n");
return ::_decode(data, options || ([ ]) );
}
#else
constant this_program_does_not_exist = 1;
#endif // constant(.____Image_JPEG)
|