import argparse
from mediagoblin import mg_globals as mgg
-from mediagoblin.db.models import MediaEntry
from mediagoblin.processing import (
BadMediaFail, FilenameBuilder,
MediaProcessor, ProcessingManager,
request_from_args, get_orig_filename,
store_public, copy_original)
-from mediagoblin.submit.lib import run_process_media
from mediagoblin.tools.exif import exif_fix_image_orientation, \
extract_exif, clean_exif, get_gps_data, get_useful, \
exif_image_needs_rotation
-from mediagoblin.tools.translate import lazy_pass_to_ugettext as _
_log = logging.getLogger(__name__)
return None
-class ProcessImage(object):
- """Code to process an image. Will be run by celery.
-
- A Workbench() represents a local tempory dir. It is automatically
- cleaned up when this function exits.
- """
- def __init__(self, proc_state=None):
- if proc_state:
- self.proc_state = proc_state
- self.entry = proc_state.entry
- self.workbench = proc_state.workbench
-
- # Conversions subdirectory to avoid collisions
- self.conversions_subdir = os.path.join(
- self.workbench.dir, 'convirsions')
-
- self.orig_filename = proc_state.get_orig_filename()
- self.name_builder = FilenameBuilder(self.orig_filename)
-
- # Exif extraction
- self.exif_tags = extract_exif(self.orig_filename)
-
- os.mkdir(self.conversions_subdir)
-
- def reprocess_action(self, args):
- """
- List the available actions for media in a given state
- """
- if args[0].state == 'processed':
- print _('\n Available reprocessing actions for processed images:'
- '\n \t --resize: thumb or medium'
- '\n Options:'
- '\n \t --size: max_width max_height (defaults to'
- 'config specs)')
- return True
-
- def _parser(self, args):
- """
- Parses the unknown args from the gmg parser
- """
- parser = argparse.ArgumentParser()
- parser.add_argument(
- '--resize',
- choices=['thumb', 'medium'])
- parser.add_argument(
- '--size',
- nargs=2,
- metavar=('max_width', 'max_height'),
- type=int)
- parser.add_argument(
- '--initial_processing',
- action='store_true')
-
- return parser.parse_args(args[1])
-
- def _check_eligible(self, entry_args, reprocess_args):
- """
- Check to see if we can actually process the given media as requested
- """
-
- if entry_args.state == 'processed':
- if reprocess_args.initial_processing:
- raise Exception(_('You can not run --initial_processing on'
- ' media that has already been processed.'))
-
- if entry_args.state == 'failed':
- if reprocess_args.resize:
- raise Exception(_('You can not run --resize on media that has'
- ' not been processed.'))
- if reprocess_args.size:
- _log.warn('With --initial_processing, the --size flag will be'
- ' ignored.')
-
- if entry_args.state == 'processing':
- raise Exception(_('We currently do not support reprocessing on'
- ' media that is in the "processing" state.'))
-
- def initial_processing(self):
- # Is there any GPS data
- gps_data = get_gps_data(self.exif_tags)
-
- # Always create a small thumbnail
- resize_tool(self.proc_state, True, 'thumb', self.orig_filename,
- self.name_builder.fill('{basename}.thumbnail{ext}'),
- self.conversions_subdir, self.exif_tags)
-
- # Possibly create a medium
- resize_tool(self.proc_state, False, 'medium', self.orig_filename,
- self.name_builder.fill('{basename}.medium{ext}'),
- self.conversions_subdir, self.exif_tags)
-
- # Copy our queued local workbench to its final destination
- self.proc_state.copy_original(self.name_builder.fill('{basename}{ext}'))
-
- # Remove queued media file from storage and database
- self.proc_state.delete_queue_file()
-
- # Insert exif data into database
- exif_all = clean_exif(self.exif_tags)
-
- if len(exif_all):
- self.entry.media_data_init(exif_all=exif_all)
-
- if len(gps_data):
- for key in list(gps_data.keys()):
- gps_data['gps_' + key] = gps_data.pop(key)
- self.entry.media_data_init(**gps_data)
-
- def reprocess(self, reprocess_info):
- """
- This function actually does the reprocessing when called by
- ProcessMedia in gmg/processing/task.py
- """
- new_size = None
-
- # Did they specify a size? They must specify either both or none, so
- # we only need to check if one is present
- if reprocess_info.get('max_width'):
- max_width = reprocess_info['max_width']
- max_height = reprocess_info['max_height']
-
- new_size = (max_width, max_height)
-
- resize_tool(self.proc_state, False, reprocess_info['resize'],
- self.name_builder.fill('{basename}.medium{ext}'),
- self.conversions_subdir, self.exif_tags, new_size)
-
- def media_reprocess(self, args):
- """
- This function handles the all of the reprocessing logic, before calling
- gmg/submit/lib/run_process_media
- """
- reprocess_args = self._parser(args)
- entry_args = args[0]
-
- # Can we actually process the given media as requested?
- self._check_eligible(entry_args, reprocess_args)
-
- # Do we want to re-try initial processing?
- if reprocess_args.initial_processing:
- for id in entry_args.media_id:
- entry = MediaEntry.query.filter_by(id=id).first()
- run_process_media(entry)
-
- # Are we wanting to resize the thumbnail or medium?
- elif reprocess_args.resize:
-
- # reprocess all given media entries
- for id in entry_args.media_id:
- entry = MediaEntry.query.filter_by(id=id).first()
-
- # For now we can only reprocess with the original file
- if not entry.media_files.get('original'):
- raise Exception(_('The original file for this media entry'
- ' does not exist.'))
-
- reprocess_info = self._get_reprocess_info(reprocess_args)
- run_process_media(entry, reprocess_info=reprocess_info)
-
- # If we are here, they forgot to tell us how to reprocess
- else:
- _log.warn('You must set either --resize or --initial_processing'
- ' flag to reprocess an image.')
-
- def _get_reprocess_info(self, args):
- """ Returns a dict with the info needed for reprocessing"""
- reprocess_info = {'resize': args.resize}
-
- if args.size:
- reprocess_info['max_width'] = args.size[0]
- reprocess_info['max_height'] = args.size[1]
-
- return reprocess_info
-
-
class CommonImageProcessor(MediaProcessor):
"""
Provides a base for various media processing steps
# Exif extraction
self.exif_tags = extract_exif(self.orig_filename)
-
def generate_medium_if_applicable(self, size=None):
resize_tool(self.entry, False, 'medium', self.orig_filename,
self.name_builder.fill('{basename}.medium{ext}'),
- self.conversions_subdir, self.exif_tags)
+ self.conversions_subdir, self.exif_tags, size)
def generate_thumb(self, size=None):
resize_tool(self.entry, True, 'thumb', self.orig_filename,
self.name_builder.fill('{basename}.thumbnail{ext}'),
- self.conversions_subdir, self.exif_tags)
+ self.conversions_subdir, self.exif_tags, size)
def copy_original(self):
copy_original(
parser.add_argument(
'--thumb-size',
nargs=2,
+ metavar=('max_width', 'max_height'),
type=int)
return parser
return request_from_args(
args, ['size', 'thumb_size'])
-
def process(self, size=None, thumb_size=None):
self.common_setup()
self.generate_medium_if_applicable(size=size)
self.generate_thumb(size=thumb_size)
self.copy_original()
self.extract_metadata()
+ self.delete_queue_file()
+
+
+class Resizer(CommonImageProcessor):
+ """
+ Resizing process steps for processed media
+ """
+ name = 'resize'
+ description = 'Resize image'
+
+ @classmethod
+ def media_is_eligible(cls, entry):
+ """
+ Determine if this media type is eligible for processing
+ """
+ return entry.state in 'processed'
+
+ ###############################
+ # Command line interface things
+ ###############################
+
+ @classmethod
+ def generate_parser(cls):
+ parser = argparse.ArgumentParser(
+ description=cls.description,
+ prog=cls.name)
+
+ parser.add_argument(
+ '--size',
+ nargs=2,
+ metavar=('max_width', 'max_height'),
+ type=int)
+
+ parser.add_argument(
+ 'file',
+ choices=['medium', 'thumb'])
+
+ return parser
+
+ @classmethod
+ def args_to_request(cls, args):
+ return request_from_args(
+ args, ['size', 'file'])
+
+ def process(self, file, size=None):
+ self.common_setup()
+ if file == 'medium':
+ self.generate_medium_if_applicable(size=size)
+ elif file == 'thumb':
+ self.generate_thumb(size=size)
class ImageProcessingManager(ProcessingManager):
def __init__(self):
super(self.__class__, self).__init__()
self.add_processor(InitialProcessor)
+ self.add_processor(Resizer)
if __name__ == '__main__':
projects / mediagoblin.git / commitdiff