pyfmframework/fmframework/image/__init__.py

135 lines
5.3 KiB
Python

import numpy as np
from typing import List
from datetime import date
from fmframework.net.network import Network
from fmframework.chart import get_populated_album_chart
from fmframework.image.downloader import Downloader, ImageSizeNotAvailableException
from fmframework.model import Image
import logging
logger = logging.getLogger(__name__)
def get_blank_image(height, width):
return np.zeros((height, width, 3), np.uint8)
def arrange_cover_grid(images: List[np.array], width: int = 5):
logger.debug(f'arranging {len(images)} images at width {width}')
rows = []
for row in chunk(images, width):
row_img = row[0]
for image in row[1:]:
row_img = np.concatenate((row_img, image), axis=1)
# handle incomplete final row
if len(row) < width and len(rows) > 0:
width = rows[0].shape[1] - row_img.shape[1]
height = rows[0].shape[0]
logger.debug(rows[0].shape)
row_img = np.concatenate((row_img, get_blank_image(width=width, height=height)), axis=1)
rows.append(row_img)
final_img = rows[0]
if len(rows) > 1:
for row in rows[1:]:
final_img = np.concatenate((final_img, row), axis=0)
return final_img
def get_image_grid_from_objects(objects,
image_size=None,
final_scale=(300, 300),
image_width: int = 5,
overlay_count: bool = False,
loader=None,
check_cache=True,
cache=True):
logger.debug(f'getting {image_size.name if image_size is not None else "best"} image grid '
f'of {len(objects)} objects at width {image_width}')
if loader is None:
loader = Downloader()
images = []
for counter, iter_object in enumerate(objects):
logger.debug(f'downloading image {counter+1} of {len(objects)}')
try:
if image_size is None:
downloaded = loader.download_best_image(iter_object,
final_scale=final_scale,
check_cache=check_cache,
cache=cache)
else:
downloaded = loader.download_image_by_size(iter_object,
size=image_size,
check_cache=check_cache,
cache=cache)
if downloaded is not None:
if overlay_count:
loader.add_scrobble_count_to_image(downloaded, iter_object.user_scrobbles)
images.append(downloaded)
else:
images.append(get_blank_image(final_scale[0], final_scale[1]))
except ImageSizeNotAvailableException:
logger.error(f'{image_size.name if image_size is not None else "best"} image not available for {iter_object.name}')
grid_image = arrange_cover_grid(images=images, width=image_width)
return grid_image
def chunk(l, n):
for i in range(0, len(l), n):
yield l[i:i+n]
class AlbumChartCollage:
@staticmethod
def from_relative_range(net: Network,
chart_range: Network.Range,
username: str = None,
limit: int = 20,
overlay_count: bool = False,
image_size: Image.Size = None,
image_width: int = 5,
check_cache=True,
cache=True):
chart = net.get_top_albums(username=username,
period=chart_range,
limit=limit)
return get_image_grid_from_objects(objects=chart,
image_size=image_size,
image_width=image_width,
overlay_count=overlay_count,
check_cache=check_cache,
cache=cache)
@staticmethod
def from_dates(net: Network,
from_date: date,
to_date: date,
username: str = None,
limit: int = 20,
overlay_count: bool = False,
image_size: Image.Size = None,
image_width: int = 5,
check_cache=True,
cache=True):
chart = get_populated_album_chart(net=net,
username=username,
from_date=from_date,
to_date=to_date,
limit=limit)
return get_image_grid_from_objects(objects=chart,
image_size=image_size,
image_width=image_width,
overlay_count=overlay_count,
check_cache=check_cache,
cache=cache)