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authorJörg Frings-Fürst <debian@jff-webhosting.net>2017-07-06 22:55:18 +0200
committerJörg Frings-Fürst <debian@jff-webhosting.net>2017-07-06 22:55:18 +0200
commit14f84dc139317de4cfc02ff36c2ad799b060dbaf (patch)
tree5163e8e596302e570a2e39c62d7a9df0e1490e28 /raphodo/thumbnailpara.py
parent18afe3e2ebdb10bbc542d79280344d9adf923d2f (diff)
parent083849161f075878e4175cd03cb7afa83d64e7f5 (diff)
Updated version 0.9.0 from 'upstream/0.9.0'
with Debian dir 04f2bb3e026e2a983dcac5cdcc35c9dd8f6b91ab
Diffstat (limited to 'raphodo/thumbnailpara.py')
-rwxr-xr-xraphodo/thumbnailpara.py684
1 files changed, 684 insertions, 0 deletions
diff --git a/raphodo/thumbnailpara.py b/raphodo/thumbnailpara.py
new file mode 100755
index 0000000..fa7560a
--- /dev/null
+++ b/raphodo/thumbnailpara.py
@@ -0,0 +1,684 @@
+#!/usr/bin/env python3
+
+# Copyright (C) 2011-2017 Damon Lynch <damonlynch@gmail.com>
+
+# This file is part of Rapid Photo Downloader.
+#
+# Rapid Photo Downloader is free software: you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# Rapid Photo Downloader is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Rapid Photo Downloader. If not,
+# see <http://www.gnu.org/licenses/>.
+
+"""
+Worker process to get thumbnails from Thumbnail or FDO cache, or
+read thumbnail / file from the device being downloaded from.
+
+For each device, there is one of these workers.
+
+Sends thumbnail processing tasks to load balancer, which will in turn
+send it to extractors.
+
+By default, will set extractors to get the file's metadata time if
+the metadata time is not already found in the rpd_file.
+"""
+
+__author__ = 'Damon Lynch'
+__copyright__ = "Copyright 2011-2017, Damon Lynch"
+
+try:
+ using_injected = 'profile' in dict(__builtins__)
+except:
+ using_injected = False
+finally:
+ if not using_injected:
+ # use of line_profiler not detected
+ def profile(func):
+ def inner(*args, **kwargs):
+ return func(*args, **kwargs)
+ return inner
+
+import os
+import sys
+import logging
+import pickle
+from collections import deque
+from operator import attrgetter
+from typing import Optional, Tuple, Set
+
+import zmq
+from PyQt5.QtGui import QImage
+from PyQt5.QtCore import QSize
+import psutil
+import gphoto2 as gp
+try:
+ import rawkit
+ have_rawkit = True
+except ImportError:
+ have_rawkit = False
+
+from raphodo.rpdfile import RPDFile
+from raphodo.interprocess import (WorkerInPublishPullPipeline,
+ GenerateThumbnailsArguments,
+ GenerateThumbnailsResults,
+ ThumbnailExtractorArgument)
+from raphodo.constants import (FileType, ThumbnailSize, ThumbnailCacheStatus,
+ ThumbnailCacheDiskStatus, ExtractionTask,
+ ExtractionProcessing, orientation_offset, thumbnail_offset,
+ ThumbnailCacheOrigin, datetime_offset)
+from raphodo.camera import Camera, CameraProblemEx
+from raphodo.cache import ThumbnailCacheSql, FdoCacheLarge
+from raphodo.utilities import (GenerateRandomFileName, create_temp_dir, CacheDirs)
+from raphodo.preferences import Preferences
+
+
+def split_list(alist: list, wanted_parts=2):
+ """
+ Split list into smaller parts
+ http://stackoverflow.com/questions/752308/split-list-into-smaller-lists
+ :param alist: the list
+ :param wanted_parts: how many lists it should be split into
+ :return: the split lists
+ """
+ length = len(alist)
+ return [alist[i * length // wanted_parts: (i + 1) * length // wanted_parts]
+ for i in range(wanted_parts)]
+
+
+def split_indexes(length: int):
+ """
+ For the length of a list, return a list of indexes into it such
+ that the indexes start with the middle item, then the middle item
+ of the remaining two parts of the list, and so forth.
+
+ Perhaps this algorithm could be optimized, as I did it myself. But
+ hey it works and for now that's the main thing.
+
+ :param length: the length of the list i.e. the number of indexes
+ to be created
+ :return: the list of indexes
+ """
+ l = list(range(length))
+ n = []
+ master = deque([l])
+ while master:
+ l1, l2 = split_list(master.popleft())
+ if l2:
+ n.append(l2[0])
+ l2 = l2[1:]
+ if l1:
+ master.append(l1)
+ if l2:
+ master.append(l2)
+ return n
+
+
+def get_temporal_gaps_and_sequences(rpd_files, temporal_span):
+ """
+ For a sorted list of rpd_files, identify those rpd_files which are
+ more than the temporal span away from each other, and those which are
+ less than the temporal span from each other.
+
+ Does not analyze clusters.
+
+ For instance, you have 1000 photos from a day's photography. You
+ sort them into a list ordered by time, earliest to latest. You then
+ get all the photos that were take more than an hour after the
+ previous photo, and those that were taken within an hour of the
+ previous photo.
+ .
+ :param rpd_files: the sorted list of rpd_files, earliest first
+ :param temporal_span: the time span that triggers a gap
+ :return: the rpd_files that signify gaps, and all the rest of the
+ rpd_files (which are in sequence)
+ """
+ if rpd_files:
+ prev = rpd_files[0]
+ gaps = [prev]
+ sequences = []
+ for i, rpd_file in enumerate(rpd_files[1:]):
+ if rpd_file.modification_time - prev.modification_time > \
+ temporal_span:
+ gaps.append(rpd_file)
+ else:
+ sequences.append(rpd_file)
+ prev = rpd_file
+ return (gaps, sequences)
+ return None
+
+
+class GetThumbnailFromCache:
+ """
+ Try to get thumbnail from Rapid Photo Downloader's thumbnail cache
+ or from the FreeDesktop.org cache.
+ """
+
+ def __init__(self, use_thumbnail_cache: bool) -> None:
+
+ if use_thumbnail_cache:
+ self.thumbnail_cache = ThumbnailCacheSql()
+ else:
+ self.thumbnail_cache = None
+
+ # Access large size Freedesktop.org thumbnail cache
+ self.fdo_cache_large = FdoCacheLarge()
+
+ self.thumbnail_size_needed = QSize(ThumbnailSize.width, ThumbnailSize.height)
+
+ def image_large_enough(self, size: QSize) -> bool:
+ """Check if image is equal or bigger than thumbnail size."""
+ return (size.width() >= self.thumbnail_size_needed.width() or
+ size.height() >= self.thumbnail_size_needed.height())
+
+ def get_from_cache(self, rpd_file: RPDFile,
+ use_thumbnail_cache: bool=True
+ ) -> Tuple[ExtractionTask, bytes, str, ThumbnailCacheOrigin]:
+ """
+ Attempt to get a thumbnail for the file from the Rapid Photo Downloader thumbnail cache
+ or from the FreeDesktop.org 256x256 thumbnail cache.
+
+ :param rpd_file:
+ :param use_thumbnail_cache: whether to use the
+ :return:
+ """
+
+ task = ExtractionTask.undetermined
+ thumbnail_bytes = None
+ full_file_name_to_work_on = ''
+ origin = None # type: Optional[ThumbnailCacheOrigin]
+
+ # Attempt to get thumbnail from Thumbnail Cache
+ # (see cache.py for definitions of various caches)
+ if self.thumbnail_cache is not None and use_thumbnail_cache:
+ get_thumbnail = self.thumbnail_cache.get_thumbnail_path(
+ full_file_name=rpd_file.full_file_name,
+ mtime=rpd_file.modification_time,
+ size=rpd_file.size,
+ camera_model=rpd_file.camera_model)
+ rpd_file.thumbnail_cache_status = get_thumbnail.disk_status
+ if get_thumbnail.disk_status != ThumbnailCacheDiskStatus.not_found:
+ origin = ThumbnailCacheOrigin.thumbnail_cache
+ task = ExtractionTask.bypass
+ if get_thumbnail.disk_status == ThumbnailCacheDiskStatus.failure:
+ rpd_file.thumbnail_status = ThumbnailCacheStatus.generation_failed
+ rpd_file.thumbnail_cache_status = ThumbnailCacheDiskStatus.failure
+ elif get_thumbnail.disk_status == ThumbnailCacheDiskStatus.found:
+ rpd_file.thumbnail_cache_status = ThumbnailCacheDiskStatus.found
+ if get_thumbnail.orientation_unknown:
+ rpd_file.thumbnail_status = ThumbnailCacheStatus.orientation_unknown
+ else:
+ rpd_file.thumbnail_status = ThumbnailCacheStatus.ready
+ with open(get_thumbnail.path, 'rb') as thumbnail:
+ thumbnail_bytes = thumbnail.read()
+
+ # Attempt to get thumbnail from large FDO Cache if not found in Thumbnail Cache
+ # and it's not being downloaded directly from a camera (if it's from a camera, it's
+ # not going to be in the FDO cache)
+
+ if task == ExtractionTask.undetermined and not rpd_file.from_camera:
+ get_thumbnail = self.fdo_cache_large.get_thumbnail(
+ full_file_name=rpd_file.full_file_name,
+ modification_time=rpd_file.modification_time,
+ size=rpd_file.size,
+ camera_model=rpd_file.camera_model)
+ if get_thumbnail.disk_status == ThumbnailCacheDiskStatus.found:
+ rpd_file.fdo_thumbnail_256_name = get_thumbnail.path
+ thumb = get_thumbnail.thumbnail # type: QImage
+ if thumb is not None:
+ if self.image_large_enough(thumb.size()):
+ task = ExtractionTask.load_file_directly
+ full_file_name_to_work_on = get_thumbnail.path
+ origin = ThumbnailCacheOrigin.fdo_cache
+ rpd_file.thumbnail_status = ThumbnailCacheStatus.fdo_256_ready
+
+ return task, thumbnail_bytes, full_file_name_to_work_on, origin
+
+# How much of the file should be read in from local disk and thus cached
+# by they kernel
+cached_read = dict(
+ cr2=260 * 1024,
+ dng=504 * 1024,
+ nef=400* 1024
+)
+
+
+def preprocess_thumbnail_from_disk(rpd_file: RPDFile,
+ processing: Set[ExtractionProcessing]) -> ExtractionTask:
+ """
+ Determine how to get a thumbnail from a photo or video that is not on a camera
+ (although it may have directly come from there during the download process)
+
+ Does not return the name of the file to be worked on -- that's the responsibility
+ of the method calling it.
+
+ :param rpd_file: details about file from which to get thumbnail from
+ :param processing: set that holds processing tasks for the extractors to perform
+ :return: extraction task required
+ """
+
+ if rpd_file.file_type == FileType.photo:
+ if rpd_file.is_tiff():
+ available = psutil.virtual_memory().available
+ if rpd_file.size <= available:
+ bytes_to_read = rpd_file.size
+ if rpd_file.mdatatime:
+ task = ExtractionTask.load_file_directly
+ else:
+ task = ExtractionTask.load_file_and_exif_directly
+ processing.add(ExtractionProcessing.resize)
+ else:
+ # Don't try to extract a thumbnail from
+ # a file that is larger than available
+ # memory
+ task = ExtractionTask.bypass
+ bytes_to_read = 0
+ else:
+ if rpd_file.is_jpeg() and rpd_file.from_camera and rpd_file.is_mtp_device:
+ # jpeg photos from smartphones don't have embedded thumbnails
+ task = ExtractionTask.load_file_and_exif_directly
+ processing.add(ExtractionProcessing.resize)
+ # elif rpd_file.is_raw() and rpd_file.from_camera and rpd_file.is_mtp_device:
+
+ else:
+ task = ExtractionTask.load_from_exif
+ processing.add(ExtractionProcessing.orient)
+ bytes_to_read = cached_read.get(rpd_file.extension, 400 * 1024)
+ if bytes_to_read:
+ if not rpd_file.download_full_file_name:
+ try:
+ with open(rpd_file.full_file_name, 'rb') as photo:
+ # Bring the file into the operating system's disk cache
+ photo.read(bytes_to_read)
+ except FileNotFoundError:
+ logging.error("The download file %s does not exist",
+ rpd_file.download_full_file_name)
+ else:
+ # video
+ if rpd_file.thm_full_name is not None:
+ if not rpd_file.mdatatime:
+ task = ExtractionTask.load_file_directly_metadata_from_secondary
+ # It's the responsibility of the calling code to assign the
+ # secondary_full_file_name
+ else:
+ task = ExtractionTask.load_file_directly
+ processing.add(ExtractionProcessing.strip_bars_video)
+ processing.add(ExtractionProcessing.add_film_strip)
+ else:
+ if rpd_file.mdatatime:
+ task = ExtractionTask.extract_from_file
+ else:
+ task = ExtractionTask.extract_from_file_and_load_metadata
+
+ return task
+
+class GenerateThumbnails(WorkerInPublishPullPipeline):
+
+ def __init__(self) -> None:
+ self.random_filename = GenerateRandomFileName()
+ super().__init__('Thumbnails')
+
+ def cache_full_size_file_from_camera(self, rpd_file: RPDFile) -> bool:
+ """
+ Get the file from the camera chunk by chunk and cache it.
+
+ :return: True if operation succeeded, False otherwise
+ """
+ if rpd_file.file_type == FileType.photo:
+ cache_dir = self.photo_cache_dir
+ else:
+ cache_dir = self.video_cache_dir
+ cache_full_file_name = os.path.join(
+ cache_dir, '{}.{}'.format(
+ self.random_filename.name(), rpd_file.extension))
+ try:
+ self.camera.save_file_by_chunks(
+ dir_name=rpd_file.path,
+ file_name=rpd_file.name,
+ size=rpd_file.size,
+ dest_full_filename=cache_full_file_name,
+ progress_callback=None,
+ check_for_command=self.check_for_controller_directive,
+ return_file_bytes=False
+ )
+ except CameraProblemEx as e:
+ #TODO report error
+ return False
+ else:
+ rpd_file.cache_full_file_name = cache_full_file_name
+ return True
+
+ def cache_file_chunk_from_camera(self, rpd_file: RPDFile, offset: int) -> bool:
+ if rpd_file.file_type == FileType.photo:
+ cache_dir = self.photo_cache_dir
+ else:
+ cache_dir = self.video_cache_dir
+ cache_full_file_name = os.path.join(
+ cache_dir, '{}.{}'.format(
+ self.random_filename.name(), rpd_file.extension))
+ try:
+ self.camera.save_file_chunk(
+ dir_name=rpd_file.path,
+ file_name=rpd_file.name,
+ chunk_size_in_bytes=min(offset, rpd_file.size),
+ dest_full_filename=cache_full_file_name)
+ rpd_file.temp_cache_full_file_chunk = cache_full_file_name
+ return True
+ except CameraProblemEx as e:
+ #TODO problem reporting
+ return False
+
+
+ def do_work(self) -> None:
+ try:
+ self.generate_thumbnails()
+ except SystemExit as e:
+ sys.exit(e)
+ except:
+ if hasattr(self, 'device_name'):
+ logging.error("Exception generating thumbnails for %s", self.device_name)
+ else:
+ logging.error("Exception generating thumbnails")
+ logging.exception("Traceback:")
+
+ def generate_thumbnails(self) -> None:
+ self.camera = None
+ arguments = pickle.loads(self.content) # type: GenerateThumbnailsArguments
+ self.device_name = arguments.name
+ logging.info("Generating %s thumbnails for %s", len(arguments.rpd_files), arguments.name)
+ if arguments.log_gphoto2:
+ gp.use_python_logging()
+
+ self.frontend = self.context.socket(zmq.PUSH)
+ self.frontend.connect("tcp://localhost:{}".format(arguments.frontend_port))
+
+ self.prefs = Preferences()
+
+
+ # Access and generate Rapid Photo Downloader thumbnail cache
+ use_thumbnail_cache = self.prefs.use_thumbnail_cache
+
+ thumbnail_caches = GetThumbnailFromCache(use_thumbnail_cache=use_thumbnail_cache)
+
+ photo_cache_dir = video_cache_dir = None
+ cache_file_from_camera = False
+
+ rpd_files = arguments.rpd_files
+
+ # with open('tests/thumbnail_data_medium_no_tiff', 'wb') as f:
+ # pickle.dump(rpd_files, f)
+
+
+ # Must sort files by modification time prior to temporal analysis
+ rpd_files = sorted(rpd_files, key=attrgetter('modification_time'))
+
+ time_span = arguments.proximity_seconds
+
+ rpd_files2 = []
+
+ if rpd_files:
+ gaps, sequences = get_temporal_gaps_and_sequences(rpd_files, time_span)
+
+ rpd_files2.extend(gaps)
+
+ indexes = split_indexes(len(sequences))
+ rpd_files2.extend([sequences[idx] for idx in indexes])
+
+ assert len(rpd_files) == len(rpd_files2)
+ rpd_files = rpd_files2
+
+ if arguments.camera is not None:
+ self.camera = Camera(arguments.camera, arguments.port)
+
+ if not self.camera.camera_initialized:
+ # There is nothing to do here: exit!
+ logging.debug("Prematurely exiting thumbnail generation due "
+ "to lack of access to camera %s",
+ arguments.camera)
+ self.disconnect_logging()
+ self.send_finished_command()
+ sys.exit(0)
+
+ must_make_cache_dirs = (not self.camera.can_fetch_thumbnails or cache_file_from_camera)
+
+ if must_make_cache_dirs or arguments.need_video_cache_dir:
+ # If downloading complete copy of the files to
+ # generate previews, then may as well cache them to speed up
+ # the download process
+ cache_file_from_camera = must_make_cache_dirs
+ self.photo_cache_dir = create_temp_dir(
+ folder=arguments.cache_dirs.photo_cache_dir,
+ prefix='rpd-cache-{}-'.format(self.device_name[:10]))
+ self.video_cache_dir = create_temp_dir(
+ folder=arguments.cache_dirs.video_cache_dir,
+ prefix='rpd-cache-{}-'.format(self.device_name[:10]))
+ cache_dirs = CacheDirs(self.photo_cache_dir, self.video_cache_dir)
+ self.content = pickle.dumps(GenerateThumbnailsResults(
+ scan_id=arguments.scan_id,
+ cache_dirs=cache_dirs), pickle.HIGHEST_PROTOCOL)
+ self.send_message_to_sink()
+
+ from_thumb_cache = 0
+ from_fdo_cache = 0
+
+ for rpd_file in rpd_files: # type: RPDFile
+ # Check to see if the process has received a command
+ self.check_for_controller_directive()
+
+ exif_buffer = None
+ file_to_work_on_is_temporary = False
+ secondary_full_file_name = ''
+ processing = set() # type: Set[ExtractionProcessing]
+
+ # Attempt to get thumbnail from Thumbnail Cache
+ # (see cache.py for definitions of various caches)
+
+ cache_search = thumbnail_caches.get_from_cache(rpd_file)
+ task, thumbnail_bytes, full_file_name_to_work_on, origin = cache_search
+ if task != ExtractionTask.undetermined:
+ if origin == ThumbnailCacheOrigin.thumbnail_cache:
+ from_thumb_cache += 1
+ # logging.debug("Thumbnail for %s found in RPD thumbnail cache",
+ # rpd_file.full_file_name)
+ else:
+ assert origin == ThumbnailCacheOrigin.fdo_cache
+ logging.debug("Thumbnail for %s found in large FDO cache",
+ rpd_file.full_file_name)
+ from_fdo_cache += 1
+ processing.add(ExtractionProcessing.resize)
+ if not rpd_file.mdatatime:
+ # Since we're extracting the thumbnail from the FDO cache,
+ # need to grab its metadata too.
+ # Reassign the task
+ task = ExtractionTask.load_file_directly_metadata_from_secondary
+ # It's not being downloaded from a camera, so nothing
+ # special to do except assign the name of the file from which
+ # to extract the metadata
+ secondary_full_file_name = rpd_file.full_file_name
+ logging.debug("Although thumbnail found in the cache, tasked to extract "
+ "file time recorded in metadata from %s",
+ secondary_full_file_name)
+ if task == ExtractionTask.undetermined:
+ # Thumbnail was not found in any cache: extract it
+ if self.camera: # type: Camera
+ if rpd_file.file_type == FileType.photo:
+ if self.camera.can_fetch_thumbnails:
+ task = ExtractionTask.load_from_bytes
+ if rpd_file.is_jpeg_type():
+ # gPhoto2 knows how to get jpeg thumbnails
+ try:
+ exif_buffer = self.camera.get_exif_extract_from_jpeg(
+ rpd_file.path, rpd_file.name)
+ except CameraProblemEx as e:
+ # TODO handle error?
+ exif_buffer = None
+ else:
+ # gPhoto2 does not know how to get RAW thumbnails, so we do that
+ # part ourselves
+ if rpd_file.extension == 'crw':
+ # Could cache this file, since reading its entirety
+ # But does anyone download a CRW file from the camera these
+ # days?!
+ bytes_to_read = rpd_file.size
+ else:
+ bytes_to_read = min(rpd_file.size,
+ orientation_offset.get(rpd_file.extension, 500))
+ exif_buffer = self.camera.get_exif_extract(
+ rpd_file.path, rpd_file.name, bytes_to_read)
+ try:
+ thumbnail_bytes = self.camera.get_thumbnail(rpd_file.path,
+ rpd_file.name)
+ except CameraProblemEx as e:
+ #TODO report error
+ thumbnail_bytes = None
+ processing.add(ExtractionProcessing.strip_bars_photo)
+ processing.add(ExtractionProcessing.orient)
+ else:
+ # Many (all?) jpegs from phones don't include jpeg previews,
+ # so need to render from the entire jpeg itself. Slow!
+
+ # If rawkit is not installed, then extract merely a part of
+ # phone's raw format, and try to extract the jpeg preview
+ # from it (which probably doesn't exist!). This is fast.
+ # If have rawkit, download and render an image from the
+ # RAW
+ if not rpd_file.is_jpeg() and not have_rawkit:
+ bytes_to_read = thumbnail_offset.get(rpd_file.extension)
+ if bytes_to_read:
+ exif_buffer = self.camera.get_exif_extract(
+ rpd_file.path, rpd_file.name, bytes_to_read)
+ task = ExtractionTask.load_from_exif_buffer
+ processing.add(ExtractionProcessing.orient)
+ if (task == ExtractionTask.undetermined and
+ self.cache_full_size_file_from_camera(rpd_file)):
+ if rpd_file.is_jpeg():
+ task = ExtractionTask.load_file_and_exif_directly
+ processing.add(ExtractionProcessing.resize)
+ processing.add(ExtractionProcessing.orient)
+ else:
+ task = ExtractionTask.load_from_exif
+ processing.add(ExtractionProcessing.resize)
+ processing.add(ExtractionProcessing.orient)
+ full_file_name_to_work_on = rpd_file.cache_full_file_name
+ else:
+ # Failed to generate thumbnail
+ task == ExtractionTask.bypass
+ else:
+ # video
+ if rpd_file.thm_full_name is not None:
+ # Fortunately, we have a special video thumbnail file
+ # Still need to get metadata time, however.
+
+ offset = datetime_offset.get(rpd_file.extension)
+ # If there is no offset, there is not point trying to extract the
+ # metadata time from part of the video. It's not ideal,
+ # but if this is from a camera on which there were any other files
+ # we can assume we've got a somewhat accurate date time for it from
+ # the modification time.
+ # The only exception is if the video file is not that big, in which
+ # case it's worth reading in its entirety:
+ if offset is None and rpd_file.size < 4000000:
+ offset = rpd_file.size
+
+ if rpd_file.mdatatime or not offset:
+ task = ExtractionTask.load_from_bytes
+ elif self.cache_file_chunk_from_camera(rpd_file, offset):
+ task = ExtractionTask.load_from_bytes_metadata_from_temp_extract
+ secondary_full_file_name = rpd_file.temp_cache_full_file_chunk
+ else:
+ # For some reason was unable to download part of the video file
+ task = ExtractionTask.load_from_bytes
+
+ try:
+ thumbnail_bytes = self.camera.get_THM_file(rpd_file.thm_full_name)
+ except CameraProblemEx as e:
+ # TODO report error
+ thumbnail_bytes = None
+ processing.add(ExtractionProcessing.strip_bars_video)
+ processing.add(ExtractionProcessing.add_film_strip)
+ else:
+ # For most videos, extract a small part of the video and use
+ # that to generate thumbnail
+ offset = thumbnail_offset.get(rpd_file.extension)
+ if offset:
+ offset = max(offset, datetime_offset.get(rpd_file.extension))
+ if offset and self.cache_file_chunk_from_camera(rpd_file, offset):
+ task = ExtractionTask.extract_from_file_and_load_metadata
+ full_file_name_to_work_on = rpd_file.temp_cache_full_file_chunk
+ file_to_work_on_is_temporary = True
+ elif self.cache_full_size_file_from_camera(rpd_file):
+ task = ExtractionTask.extract_from_file_and_load_metadata
+ full_file_name_to_work_on = rpd_file.cache_full_file_name
+ else:
+ # Failed to generate thumbnail
+ task == ExtractionTask.bypass
+ else:
+ # File is not on a camera
+ task = preprocess_thumbnail_from_disk(rpd_file=rpd_file, processing=processing)
+ if task != ExtractionTask.bypass:
+ if rpd_file.thm_full_name is not None:
+ full_file_name_to_work_on = rpd_file.thm_full_name
+ if task == ExtractionTask.load_file_directly_metadata_from_secondary:
+ secondary_full_file_name = rpd_file.full_file_name
+ else:
+ full_file_name_to_work_on = rpd_file.full_file_name
+
+ if task == ExtractionTask.bypass:
+ self.content = pickle.dumps(GenerateThumbnailsResults(
+ rpd_file=rpd_file, thumbnail_bytes=thumbnail_bytes),
+ pickle.HIGHEST_PROTOCOL)
+ self.send_message_to_sink()
+
+ elif task != ExtractionTask.undetermined:
+ # Send data to load balancer, which will send to one of its
+ # workers
+
+ self.content = pickle.dumps(ThumbnailExtractorArgument(
+ rpd_file=rpd_file,
+ task=task,
+ processing=processing,
+ full_file_name_to_work_on=full_file_name_to_work_on,
+ secondary_full_file_name=secondary_full_file_name,
+ exif_buffer=exif_buffer,
+ thumbnail_bytes = thumbnail_bytes,
+ use_thumbnail_cache=use_thumbnail_cache,
+ file_to_work_on_is_temporary=file_to_work_on_is_temporary,
+ write_fdo_thumbnail=False,
+ send_thumb_to_main=True),
+ pickle.HIGHEST_PROTOCOL)
+ self.frontend.send_multipart([b'data', self.content])
+
+ if arguments.camera:
+ self.camera.free_camera()
+ # Delete our temporary cache directories if they are empty
+ if photo_cache_dir is not None:
+ if not os.listdir(self.photo_cache_dir):
+ os.rmdir(self.photo_cache_dir)
+ if video_cache_dir is not None:
+ if not os.listdir(self.video_cache_dir):
+ os.rmdir(self.video_cache_dir)
+
+ logging.debug("Finished phase 1 of thumbnail generation for %s", self.device_name)
+ if from_thumb_cache:
+ logging.info("{} of {} thumbnails for {} came from thumbnail cache".format(
+ from_thumb_cache, len(rpd_files), self.device_name))
+ if from_fdo_cache:
+ logging.info("{} of {} thumbnails of for {} came from Free Desktop cache".format(
+ from_fdo_cache, len(rpd_files), self.device_name))
+
+ self.disconnect_logging()
+ self.send_finished_command()
+
+ def cleanup_pre_stop(self):
+ if self.camera is not None:
+ self.camera.free_camera()
+
+if __name__ == "__main__":
+ generate_thumbnails = GenerateThumbnails()