def do_optimization(t: Task) -> TaskResult:
""" Try to reduce file size of an image.
Expects a Task object containing all the parameters for the image processing.
The actual processing is done by the corresponding function,
according to the detected image format.
:param t: A Task object containing all the parameters for the image processing.
:return: A TaskResult object containing information for single file report.
"""
# TODO: Catch exceptions that may occur here.
try:
img = Image.open(t.src_path)
# TODO: improve method of image format detection (what should happen if the
# file extension does not match the image content's format? Maybe we
# should skip unsupported formats?)
if img.format.upper() == 'PNG':
return optimize_png(t)
elif img.format.upper() in ('JPEG', 'MPO'):
return optimize_jpg(t)
else:
try:
had_exif = True if piexif.load(t.src_path)['Exif'] else False
except piexif.InvalidImageDataError: # Not a supported format
had_exif = False
except ValueError: # No exif info
had_exif = False
return TaskResult(img=t.src_path,
orig_format=img.format.upper(),
result_format=img.format.upper(),
orig_mode=img.mode,
result_mode=img.mode,
orig_colors=0,
final_colors=0,
orig_size=os.path.getsize(t.src_path),
final_size=0,
was_optimized=False,
was_downsized=False,
had_exif=had_exif,
has_exif=had_exif)
except IOError:
try:
had_exif = True if piexif.load(t.src_path)['Exif'] else False
except piexif.InvalidImageDataError: # Not a supported format
had_exif = False
except ValueError: # No exif info
had_exif = False
return TaskResult(img=t.src_path,
orig_format="",
result_format="",
orig_mode="",
result_mode="",
orig_colors=0,
final_colors=0,
orig_size=os.path.getsize(t.src_path),
final_size=0,
was_optimized=False,
was_downsized=False,
had_exif=had_exif,
has_exif=had_exif)
def do_optimization(t: Task) -> TaskResult:
""" Try to reduce file size of an image.
Expects a Task object containing all the parameters for the image processing.
The actual processing is done by the corresponding function,
according to the detected image format.
:param t: A Task object containing all the parameters for the image processing.
:return: A TaskResult object containing information for single file report.
"""
img = Image.open(t.src_path)
if img.format.upper() == 'PNG':
return optimize_png(t)
# elif img.format.upper() == 'JPEG':
else:
return optimize_jpg(t)
def do_optimization(t: Task) -> TaskResult:
""" Try to reduce file size of an image.
Expects a Task object containing all the parameters for the image processing.
The actual processing is done by the corresponding function,
according to the detected image format.
:param t: A Task object containing all the parameters for the image processing.
:return: A TaskResult object containing information for single file report.
"""
# TODO: Catch exceptions that may occur here.
img = Image.open(t.src_path)
# TODO: improve method of image format detection (what should happen if the
# file extension does not match the image content's format? Maybe we
# should skip unsupported formats?)
if img.format.upper() == 'PNG':
return optimize_png(t)
elif (img.format.upper() == 'JPEG'):
return optimize_jpg(t)
else:
pass
