Stream RAW saves with live progress v0.8.3

app/main.py

@@ -21,7 +21,7 @@ from typing import Annotated, Any
 
 from fastapi import FastAPI, File, Form, HTTPException, Request, UploadFile
 from pydantic import BaseModel, Field
-from fastapi.responses import FileResponse, Response
+from fastapi.responses import FileResponse, Response, StreamingResponse
 from fastapi.staticfiles import StaticFiles
 from PIL import Image, ImageOps, UnidentifiedImageError
 
@@ -85,7 +85,7 @@ APP_SUBTITLE = (
     or f"Local folder · in-place {ENABLED_FORMAT_LABEL} metadata"
 )
 APP_URL = os.getenv("APP_URL", "http://localhost:8080")
-APP_VERSION = "0.8.2"
+APP_VERSION = "0.8.3"
 MAX_UPLOAD_MB = int(os.getenv("MAX_UPLOAD_MB", "150"))
 MAX_UPLOAD_BYTES = MAX_UPLOAD_MB * 1024 * 1024
 PREVIEW_MAX_EDGE = int(os.getenv("PREVIEW_MAX_EDGE", "2400"))
@@ -1043,11 +1043,17 @@ async def process_photo(
             response_read_seconds,
         )
 
-    return Response(
-        content=updated_bytes,
+    def response_chunks() -> Any:
+        chunk_size = 256 * 1024
+        for offset in range(0, len(updated_bytes), chunk_size):
+            yield updated_bytes[offset:offset + chunk_size]
+
+    return StreamingResponse(
+        response_chunks(),
         media_type=MEDIA_TYPES[suffix],
         headers={
             "Content-Disposition": f'inline; filename="{Path(filename).name}"',
+            "Content-Length": str(len(updated_bytes)),
             "Cache-Control": "no-store",
             "X-Date-Precision": precision_label,
             "Server-Timing": (