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redesigned upscaler to use pillow's Lanczos filter for downscaling; bug fixes

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K4YT3X 2020-09-13 14:34:52 -04:00
parent 2b84e497b5
commit a8d7f7ecf2
1 changed files with 34 additions and 14 deletions
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40
src/upscaler.py
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@ -37,7 +37,9 @@ import time
import traceback
# third-party imports
from PIL import Image
from avalon_framework import Avalon
from tqdm import tqdm
import magic
# internationalization constants
@ -51,7 +53,7 @@ language.install()
_ = language.gettext
# version information
UPSCALER_VERSION = '4.3.1'
UPSCALER_VERSION = '4.4.0'
# these names are consistent for
# - driver selection in command line
@ -124,6 +126,7 @@ class Upscaler:
# other internal members and signals
self.running = False
self.current_processing_starting_time = time.time()
self.total_frames_upscaled = 0
self.total_frames = 0
self.total_files = 0
@ -531,6 +534,9 @@ class Upscaler:
# get new job from queue
self.current_input_file, output_path, input_file_mime_type, input_file_type, input_file_subtype = self.processing_queue.get()
# get current job starting time for GUI calculations
self.current_processing_starting_time = time.time()
# get video information JSON using FFprobe
Avalon.info(_('Reading file information'))
file_info = self.ffmpeg_object.probe_file_info(self.current_input_file)
@ -638,12 +644,6 @@ class Upscaler:
self.scaling_jobs.append(supported_scaling_ratios[-1])
remaining_scaling_ratio /= supported_scaling_ratios[-1]
# append scaling filter to video assembly command
if self.ffmpeg_settings['assemble_video']['output_options'].get('-vf') is None:
self.ffmpeg_settings['assemble_video']['output_options']['-vf'] = f'scale={output_width}:{output_height}'
else:
self.ffmpeg_settings['assemble_video']['output_options']['-vf'] += f',scale={output_width}:{output_height}'
else:
self.scaling_jobs = [self.scale_ratio]
@ -696,15 +696,35 @@ class Upscaler:
Avalon.info(_('Upscaling completed'))
Avalon.info(_('Average processing speed: {} seconds per frame').format(self.total_frames / (time.time() - upscale_begin_time)))
# downscale frames with Lanczos
Avalon.info(_('Lanczos downsampling frames'))
shutil.rmtree(self.extracted_frames)
shutil.move(self.upscaled_frames, self.extracted_frames)
self.upscaled_frames.mkdir(parents=True, exist_ok=True)
for image in tqdm([i for i in self.extracted_frames.iterdir() if i.is_file() and i.name.endswith(self.extracted_frame_format)], ascii=True, desc=_('Downsamping')):
image_object = Image.open(image)
# if the image dimensions are not equal to the output size
# resize the image using Lanczos
if (image_object.width, image_object.height) != (output_width, output_height):
image_object.resize((output_width, output_height), Image.LANCZOS).save(self.upscaled_frames / image.name)
image_object.close()
# if the image's dimensions are already equal to the output size
# move image to the finished directory
else:
image_object.close()
shutil.move(image, self.upscaled_frames / image.name)
# start handling output
# output can be either GIF or video
if input_file_type == 'image' and input_file_subtype != 'gif':
Avalon.info(_('Exporting image'))
# resize and output image to output_path
self.process_pool.append(self.ffmpeg_object.resize_image([f for f in self.upscaled_frames.iterdir() if f.is_file()][0], output_path, output_width, output_height))
self._wait()
# there should be only one image in the directory
shutil.move([f for f in self.upscaled_frames.iterdir() if f.is_file()][0], output_path)
# elif input_file_mime_type == 'image/gif' or input_file_type == 'video':
else: