Spaces:
Running
Running
File size: 14,562 Bytes
0f31229 278a64b 0f31229 278a64b 0f31229 278a64b 0f31229 278a64b 0f31229 278a64b 0f31229 278a64b 0f31229 278a64b 0f31229 278a64b 0f31229 278a64b 0f31229 278a64b 0f31229 278a64b 0f31229 278a64b 0f31229 278a64b 0f31229 278a64b 0f31229 278a64b 0f31229 278a64b 0f31229 278a64b 0f31229 278a64b 0f31229 278a64b 0f31229 278a64b 0f31229 278a64b 0f31229 278a64b 0f31229 278a64b 0f31229 278a64b 0f31229 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 |
import io
from PIL import Image, ImageOps
from typing import Tuple, Optional
import base64
from ..storage import upload_fileobj, get_object_url
class ImageProcessingService:
"""Service for creating and managing multiple image resolutions"""
@staticmethod
def create_resized_image(
image_content: bytes,
filename: str,
max_width: int,
max_height: int,
quality: int = 85,
suffix: str = "",
format: str = "JPEG"
) -> Tuple[bytes, str]:
"""
Create a resized image from original content
Args:
image_content: Raw image bytes
filename: Original filename (for extension detection)
max_width: Maximum width for resized image
max_height: Maximum height for resized image
quality: Quality (1-100)
suffix: Suffix to add to filename (e.g., "_thumb", "_detail")
format: Output format ("JPEG" or "WEBP")
Returns:
Tuple of (resized_bytes, resized_filename)
"""
try:
# Open image from bytes
image = Image.open(io.BytesIO(image_content))
# Honor EXIF orientation
image = ImageOps.exif_transpose(image)
# Convert to RGB if necessary (for JPEG/WebP output)
if image.mode in ('RGBA', 'LA', 'P'):
# Create white background for transparent images
background = Image.new('RGB', image.size, (255, 255, 255))
if image.mode == 'P':
image = image.convert('RGBA')
background.paste(image, mask=image.split()[-1] if image.mode == 'RGBA' else None)
image = background
elif image.mode != 'RGB':
image = image.convert('RGB')
# Calculate new dimensions maintaining aspect ratio
width, height = image.size
ratio = min(max_width / width, max_height / height)
new_width = int(width * ratio)
new_height = int(height * ratio)
# Resize image
image = image.resize((new_width, new_height), Image.Resampling.LANCZOS)
# Save to bytes with optimized compression
output = io.BytesIO()
if format == "WEBP":
image.save(output, format='WEBP', quality=quality, method=6, optimize=True)
else:
image.save(output, format='JPEG', quality=quality, progressive=True, optimize=True, subsampling=0)
resized_bytes = output.getvalue()
# Generate resized filename with correct extension
name_parts = filename.rsplit('.', 1)
base_name = name_parts[0] if len(name_parts) > 1 else filename
extension = "webp" if format == "WEBP" else "jpg"
resized_filename = f"{base_name}{suffix}.{extension}"
return resized_bytes, resized_filename
except Exception as e:
print(f"Error creating resized image: {str(e)}")
# Return original content as fallback
return image_content, filename
@staticmethod
def create_resized_image_max_width(
image_content: bytes,
filename: str,
max_width: int,
quality: int = 85,
suffix: str = "",
format: str = "JPEG"
) -> Tuple[bytes, str]:
"""
Create a resized image using max width only while keeping aspect ratio
Args:
image_content: Raw image bytes
filename: Original filename (for extension detection)
max_width: Maximum width for resized image
quality: Quality (1-100)
suffix: Suffix to add to filename (e.g., "_thumb", "_detail")
format: Output format ("JPEG" or "WEBP")
Returns:
Tuple of (resized_bytes, resized_filename)
"""
try:
# Open image from bytes
image = Image.open(io.BytesIO(image_content))
# Honor EXIF orientation
image = ImageOps.exif_transpose(image)
# Convert to RGB if necessary (for JPEG/WebP output)
if image.mode in ('RGBA', 'LA', 'P'):
# Create white background for transparent images
background = Image.new('RGB', image.size, (255, 255, 255))
if image.mode == 'P':
image = image.convert('RGBA')
background.paste(image, mask=image.split()[-1] if image.mode == 'RGBA' else None)
image = background
elif image.mode != 'RGB':
image = image.convert('RGB')
# Calculate new dimensions using max width only
width, height = image.size
if width <= max_width:
# Image is already smaller than max_width, no need to resize
new_width, new_height = width, height
else:
# Resize to max_width while keeping aspect ratio
ratio = max_width / width
new_width = int(width * ratio)
new_height = int(height * ratio)
# Resize image if needed
if new_width != width or new_height != height:
image = image.resize((new_width, new_height), Image.Resampling.LANCZOS)
# Save to bytes with optimized compression
output = io.BytesIO()
if format == "WEBP":
image.save(output, format='WEBP', quality=quality, method=6, optimize=True)
else:
image.save(output, format='JPEG', quality=quality, progressive=True, optimize=True, subsampling=0)
resized_bytes = output.getvalue()
# Generate resized filename with correct extension
name_parts = filename.rsplit('.', 1)
base_name = name_parts[0] if len(name_parts) > 1 else filename
extension = "webp" if format == "WEBP" else "jpg"
resized_filename = f"{base_name}{suffix}.{extension}"
return resized_bytes, resized_filename
except Exception as e:
print(f"Error creating resized image: {str(e)}")
# Return original content as fallback
return image_content, filename
@staticmethod
def create_thumbnail(
image_content: bytes,
filename: str
) -> Optional[Tuple[bytes, str]]:
"""Create thumbnail (smallest version) - max width 300px, WebP format, 80% quality"""
return ImageProcessingService.create_resized_image_max_width(
image_content, filename, 300, 80, "_thumb", "WEBP"
)
@staticmethod
def create_detail_image(
image_content: bytes,
filename: str
) -> Optional[Tuple[bytes, str]]:
"""Create detail version (medium quality) - max width 800px, WebP format, 85% quality"""
return ImageProcessingService.create_resized_image_max_width(
image_content, filename, 800, 85, "_detail", "WEBP"
)
@staticmethod
def upload_resized_image(
image_content: bytes,
filename: str,
max_width: int,
max_height: int,
quality: int = 85,
suffix: str = "",
format: str = "JPEG"
) -> Optional[Tuple[str, str]]:
"""
Create and upload a resized image, returning the key and SHA256
Args:
image_content: Raw image bytes
filename: Original filename
max_width: Maximum width for resized image
max_height: Maximum height for resized image
quality: Quality (1-100)
suffix: Suffix to add to filename
format: Output format ("JPEG" or "WEBP")
Returns:
Tuple of (resized_key, resized_sha256) or None if failed
"""
try:
# Create resized image
resized_bytes, resized_filename = ImageProcessingService.create_resized_image(
image_content, filename, max_width, max_height, quality, suffix, format
)
# Determine content type based on format
content_type = 'image/webp' if format == 'WEBP' else 'image/jpeg'
# Upload resized image
resized_key = upload_fileobj(
io.BytesIO(resized_bytes),
resized_filename,
content_type=content_type,
cache_control='public, max-age=31536000, immutable'
)
# Calculate SHA256 hash of resized image
import hashlib
resized_sha256 = hashlib.sha256(resized_bytes).hexdigest()
# Return key and SHA256
return resized_key, resized_sha256
except Exception as e:
print(f"Error uploading resized image: {str(e)}")
return None
@staticmethod
def upload_resized_image_max_width(
image_content: bytes,
filename: str,
max_width: int,
quality: int = 85,
suffix: str = "",
format: str = "JPEG"
) -> Optional[Tuple[str, str]]:
"""
Create and upload a resized image using max width only, returning the key and SHA256
Args:
image_content: Raw image bytes
filename: Original filename
max_width: Maximum width for resized image
quality: Quality (1-100)
suffix: Suffix to add to filename
format: Output format ("JPEG" or "WEBP")
Returns:
Tuple of (resized_key, resized_sha256) or None if failed
"""
try:
# Create resized image
resized_bytes, resized_filename = ImageProcessingService.create_resized_image_max_width(
image_content, filename, max_width, quality, suffix, format
)
# Determine content type based on format
content_type = 'image/webp' if format == 'WEBP' else 'image/jpeg'
# Upload resized image
resized_key = upload_fileobj(
io.BytesIO(resized_bytes),
resized_filename,
content_type=content_type,
cache_control='public, max-age=31536000, immutable'
)
# Calculate SHA256 hash of resized image
import hashlib
resized_sha256 = hashlib.sha256(resized_bytes).hexdigest()
# Return key and SHA256
return resized_key, resized_sha256
except Exception as e:
print(f"Error uploading resized image: {str(e)}")
return None
@staticmethod
def upload_image_bytes(
image_bytes: bytes,
filename: str,
format: str = "WEBP"
) -> Optional[Tuple[str, str]]:
"""
Upload pre-created image bytes without re-processing
Args:
image_bytes: Pre-created image bytes
filename: Filename for the image
format: Image format ("JPEG" or "WEBP")
Returns:
Tuple of (uploaded_key, sha256) or None if failed
"""
try:
# Determine content type based on format
content_type = 'image/webp' if format == 'WEBP' else 'image/jpeg'
# Upload image bytes
uploaded_key = upload_fileobj(
io.BytesIO(image_bytes),
filename,
content_type=content_type,
cache_control='public, max-age=31536000, immutable'
)
# Calculate SHA256 hash
import hashlib
sha256 = hashlib.sha256(image_bytes).hexdigest()
# Return key and SHA256
return uploaded_key, sha256
except Exception as e:
print(f"Error uploading image bytes: {str(e)}")
return None
@staticmethod
def process_all_resolutions(
image_content: bytes,
filename: str
) -> Tuple[Optional[Tuple[str, str]], Optional[Tuple[str, str]]]:
"""
Create and upload both thumbnail and detail versions
Args:
image_content: Raw image bytes
filename: Original filename
Returns:
Tuple of (thumbnail_result, detail_result) where each result is (key, sha256) or None
"""
thumbnail_result = None
detail_result = None
try:
# Create thumbnail (WebP format, max width 300px, 80% quality)
thumbnail_bytes, thumbnail_filename = ImageProcessingService.create_thumbnail(image_content, filename)
if thumbnail_bytes and thumbnail_filename:
# Upload the pre-created thumbnail bytes without re-processing
thumbnail_result = ImageProcessingService.upload_image_bytes(
thumbnail_bytes, thumbnail_filename, "WEBP"
)
# Create detail version (WebP format, max width 800px, 85% quality)
detail_bytes, detail_filename = ImageProcessingService.create_detail_image(image_content, filename)
if detail_bytes and detail_filename:
# Upload the pre-created detail bytes without re-processing
detail_result = ImageProcessingService.upload_image_bytes(
detail_bytes, detail_filename, "WEBP"
)
except Exception as e:
print(f"Error processing image resolutions: {str(e)}")
return thumbnail_result, detail_result
@staticmethod
def get_thumbnail_url(image_url: str, fallback_url: Optional[str] = None) -> str:
"""
Get thumbnail URL from image URL or return fallback
Args:
image_url: Original image URL
fallback_url: Fallback URL if thumbnail not available
Returns:
Thumbnail URL or fallback
"""
# For now, return the original URL as fallback
# In a real implementation, you might have a mapping or pattern
return fallback_url or image_url
|