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Use pillow to encode pages as webp
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Simon Bruder 2019-09-02 17:55:16 +00:00
parent 79a348acc9
commit 253914e245
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4 changed files with 25 additions and 87 deletions
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3
Dockerfile
View file

@ -27,15 +27,12 @@ COPY --from=requirements /usr/src/app/requirements.txt .
RUN apk add --no-cache --virtual .deps \ RUN apk add --no-cache --virtual .deps \
build-base \ build-base \
git \
libffi-dev \
libjpeg-turbo-dev \ libjpeg-turbo-dev \
libwebp-dev \ libwebp-dev \
zlib-dev \ zlib-dev \
&& pip install -r requirements.txt \ && pip install -r requirements.txt \
&& apk del .deps \ && apk del .deps \
&& apk add --no-cache \ && apk add --no-cache \
libffi \
libjpeg-turbo \ libjpeg-turbo \
libwebp libwebp

1
Pipfile
View file

@ -11,7 +11,6 @@ pillow = "*"
flask-cors = "*" flask-cors = "*"
gunicorn = "*" gunicorn = "*"
flask-caching = "*" flask-caching = "*"
webp = {editable = true,git = "https://github.com/sbruder/pywebp"}
[requires] [requires]
python_version = "3.7" python_version = "3.7"

67
Pipfile.lock generated
View file

@ -1,7 +1,7 @@
{ {
"_meta": { "_meta": {
"hash": { "hash": {
"sha256": "5a623242219f0ec36e67df9c0caaadf71b39cfd21f5ed070f2766f9df8d3fd4d" "sha256": "92afeeaf4d754a31e04e294f6974bd9616eb0f388ce3d977ae235f3d49fa2eae"
}, },
"pipfile-spec": 6, "pipfile-spec": 6,
"requires": { "requires": {
@ -16,39 +16,6 @@
] ]
}, },
"default": { "default": {
"cffi": {
"hashes": [
"sha256:041c81822e9f84b1d9c401182e174996f0bae9991f33725d059b771744290774",
"sha256:046ef9a22f5d3eed06334d01b1e836977eeef500d9b78e9ef693f9380ad0b83d",
"sha256:066bc4c7895c91812eff46f4b1c285220947d4aa46fa0a2651ff85f2afae9c90",
"sha256:066c7ff148ae33040c01058662d6752fd73fbc8e64787229ea8498c7d7f4041b",
"sha256:2444d0c61f03dcd26dbf7600cf64354376ee579acad77aef459e34efcb438c63",
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"sha256:ae61af521ed676cf16ae94f30fe202781a38d7178b6b4ab622e4eec8cefaff42",
"sha256:b012a5edb48288f77a63dba0840c92d0504aa215612da4541b7b42d849bc83a3",
"sha256:d2c5cfa536227f57f97c92ac30c8109688ace8fa4ac086d19d0af47d134e2909",
"sha256:d42b5796e20aacc9d15e66befb7a345454eef794fdb0737d1af593447c6c8f45",
"sha256:dee54f5d30d775f525894d67b1495625dd9322945e7fee00731952e0368ff42d",
"sha256:e070535507bd6aa07124258171be2ee8dfc19119c28ca94c9dfb7efd23564512",
"sha256:e1ff2748c84d97b065cc95429814cdba39bcbd77c9c85c89344b317dc0d9cbff",
"sha256:ed851c75d1e0e043cbf5ca9a8e1b13c4c90f3fbd863dacb01c0808e2b5204201"
],
"version": "==1.12.3"
},
"click": { "click": {
"hashes": [ "hashes": [
"sha256:2335065e6395b9e67ca716de5f7526736bfa6ceead690adf616d925bdc622b13", "sha256:2335065e6395b9e67ca716de5f7526736bfa6ceead690adf616d925bdc622b13",
@ -135,27 +102,6 @@
], ],
"version": "==1.1.1" "version": "==1.1.1"
}, },
"numpy": {
"hashes": [
"sha256:03e311b0a4c9f5755da7d52161280c6a78406c7be5c5cc7facfbcebb641efb7e",
"sha256:0cdd229a53d2720d21175012ab0599665f8c9588b3b8ffa6095dd7b90f0691dd",
"sha256:312bb18e95218bedc3563f26fcc9c1c6bfaaf9d453d15942c0839acdd7e4c473",
"sha256:464b1c48baf49e8505b1bb754c47a013d2c305c5b14269b5c85ea0625b6a988a",
"sha256:5adfde7bd3ee4864536e230bcab1c673f866736698724d5d28c11a4d63672658",
"sha256:7724e9e31ee72389d522b88c0d4201f24edc34277999701ccd4a5392e7d8af61",
"sha256:8d36f7c53ae741e23f54793ffefb2912340b800476eb0a831c6eb602e204c5c4",
"sha256:910d2272403c2ea8a52d9159827dc9f7c27fb4b263749dca884e2e4a8af3b302",
"sha256:951fefe2fb73f84c620bec4e001e80a80ddaa1b84dce244ded7f1e0cbe0ed34a",
"sha256:9588c6b4157f493edeb9378788dcd02cb9e6a6aeaa518b511a1c79d06cbd8094",
"sha256:9ce8300950f2f1d29d0e49c28ebfff0d2f1e2a7444830fbb0b913c7c08f31511",
"sha256:be39cca66cc6806652da97103605c7b65ee4442c638f04ff064a7efd9a81d50a",
"sha256:c3ab2d835b95ccb59d11dfcd56eb0480daea57cdf95d686d22eff35584bc4554",
"sha256:eb0fc4a492cb896346c9e2c7a22eae3e766d407df3eb20f4ce027f23f76e4c54",
"sha256:ec0c56eae6cee6299f41e780a0280318a93db519bbb2906103c43f3e2be1206c",
"sha256:f4e4612de60a4f1c4d06c8c2857cdcb2b8b5289189a12053f37d3f41f06c60d0"
],
"version": "==1.17.0"
},
"pillow": { "pillow": {
"hashes": [ "hashes": [
"sha256:0804f77cb1e9b6dbd37601cee11283bba39a8d44b9ddb053400c58e0c0d7d9de", "sha256:0804f77cb1e9b6dbd37601cee11283bba39a8d44b9ddb053400c58e0c0d7d9de",
@ -188,12 +134,6 @@
"index": "pypi", "index": "pypi",
"version": "==6.1.0" "version": "==6.1.0"
}, },
"pycparser": {
"hashes": [
"sha256:a988718abfad80b6b157acce7bf130a30876d27603738ac39f140993246b25b3"
],
"version": "==2.19"
},
"six": { "six": {
"hashes": [ "hashes": [
"sha256:3350809f0555b11f552448330d0b52d5f24c91a322ea4a15ef22629740f3761c", "sha256:3350809f0555b11f552448330d0b52d5f24c91a322ea4a15ef22629740f3761c",
@ -201,11 +141,6 @@
], ],
"version": "==1.12.0" "version": "==1.12.0"
}, },
"webp": {
"editable": true,
"git": "https://github.com/sbruder/pywebp",
"ref": "39e39c0e1071985b7944651cc13ec11834751ce3"
},
"werkzeug": { "werkzeug": {
"hashes": [ "hashes": [
"sha256:87ae4e5b5366da2347eb3116c0e6c681a0e939a33b2805e2c0cbd282664932c4", "sha256:87ae4e5b5366da2347eb3116c0e6c681a0e939a33b2805e2c0cbd282664932c4",

41
backend.py
View file

@ -6,7 +6,6 @@ from zipfile import ZipFile
from zlib import crc32 from zlib import crc32
import os.path import os.path
import sqlite3 import sqlite3
import webp
import werkzeug.exceptions as exceptions import werkzeug.exceptions as exceptions
mimetypes['.webp'] = 'image/webp' mimetypes['.webp'] = 'image/webp'
@ -52,24 +51,25 @@ def generate_thumbnail(filepath):
class CalibreDB: class CalibreDB:
def __init__(self, path='metadata.db', enable_webp=True, webp_quality=80, webp_size=2048): def __init__(self, path='metadata.db', enable_webp=True, webp_quality=80, webp_method=0, webp_size=2048):
self.database_path = f'file:{path}?mode=ro' self.database_path = f'file:{path}?mode=ro'
self.webp = enable_webp self.webp = enable_webp
if self.webp is True: if self.webp is True:
if webp_quality == 101: # lossy: 0-100 (used as quality)
lossless = True # lossless: 101-201 (101 subtracted and used as quality)
webp_quality = 100 if webp_quality > 100:
webp_lossless = True
webp_quality = webp_quality - 101
else: else:
lossless = False webp_lossless = False
self.webp_config = webp.WebPConfig.new( self.webp_config = {
preset=webp.WebPPreset.DRAWING, 'quality': webp_quality,
quality=webp_quality, 'method': webp_method,
lossless=lossless 'lossless': webp_lossless,
) 'size': webp_size
}
self.webp_size = webp_size
def create_cursor(self): def create_cursor(self):
conn = sqlite3.connect(self.database_path, uri=True) conn = sqlite3.connect(self.database_path, uri=True)
@ -241,10 +241,17 @@ class CalibreDB:
except FileNotFoundError: except FileNotFoundError:
with volume.open(page_filename) as orig_page_data: with volume.open(page_filename) as orig_page_data:
image = Image.open(orig_page_data) image = Image.open(orig_page_data)
image.thumbnail((self.webp_size, self.webp_size)) image.thumbnail(tuple([self.webp_config['size']] * 2))
image = image.convert('RGB') page_data = BytesIO()
image = webp.WebPPicture.from_pil(image) image.save(
page_data = BytesIO(image.encode(self.webp_config).buffer()) page_data,
format='webp',
save_all=True, #
append_images=[image], # https://github.com/python-pillow/Pillow/issues/4042
quality=self.webp_config['quality'],
method=self.webp_config['method'],
lossless=self.webp_config['lossless']
)
disk_cache.set(f'{volume_id}-{page_number}', page_data) disk_cache.set(f'{volume_id}-{page_number}', page_data)
page_data.seek(0) page_data.seek(0)