use jpegtran to do lossless 90 rotations

pa_job_manager.py

@@ -23,7 +23,7 @@ from sqlalchemy.orm import sessionmaker
 from sqlalchemy.orm import scoped_session
 
 ### LOCAL FILE IMPORTS ###
-from shared import DB_URL, PA_JOB_MANAGER_HOST, PA_JOB_MANAGER_PORT, THUMBSIZE, SymlinkName, GenThumb, SECS_IN_A_DAY
+from shared import DB_URL, PA_JOB_MANAGER_HOST, PA_JOB_MANAGER_PORT, THUMBSIZE, SymlinkName, GenThumb, SECS_IN_A_DAY, PA_EXIF_ROTATER
 from datetime import datetime, timedelta, date
 
 ### PYTHON LIB IMPORTS ###
@@ -45,6 +45,7 @@ import face_recognition
 import re
 import sys
 import ffmpeg
+import subprocess
 
 
 # global debug setting
@@ -1901,21 +1902,20 @@ def JobTransformImage(job):
     amt=[jex.value for jex in job.extra if jex.name == "amt"][0]
     e=session.query(Entry).join(File).filter(Entry.id==id).first()
     print( f"JobTransformImage: job={job.id}, id={id}, amt={amt}" )
-    im = Image.open( e.FullPathOnFS() )
 
     if amt == "fliph":
         AddLogForJob(job, f"INFO: Flipping {e.FullPathOnFS()} horizontally" )
+        im = Image.open( e.FullPathOnFS() )
         out = im.transpose(Image.FLIP_LEFT_RIGHT)
+        out.save( e.FullPathOnFS() )
     elif amt == "flipv":
         AddLogForJob(job, f"INFO: Flipping {e.FullPathOnFS()} vertically" )
+        im = Image.open( e.FullPathOnFS() )
         out = im.transpose(Image.FLIP_TOP_BOTTOM)
+        out.save( e.FullPathOnFS() )
     else:
         AddLogForJob(job, f"INFO: Rotating {e.FullPathOnFS()} by {amt} degrees" )
-        if im.format == 'JPEG':
-            im=ImageOps.exif_transpose(im)
-        out = im.rotate(int(amt), expand=True)
-    out.save( e.FullPathOnFS() )
-    print( f"JobTransformImage DONE transform: job={job.id}, id={id}, amt={amt}" )
+        p = subprocess.run([PA_EXIF_ROTATER, e.FullPathOnFS(), amt ] )
     settings = session.query(Settings).first()
     e.file_details.thumbnail, _ , _ = GenThumb( e.FullPathOnFS(), settings.auto_rotate )
     e.file_details.hash = md5( job, e )