process text-to-image requested image count sequentially

runner/app/routes/text_to_image.py

@@ -7,7 +7,7 @@
 from app.routes.util import image_to_data_url, ImageResponse, HTTPError, http_error
 import logging
 import random
-import os
+import os, json
 
 router = APIRouter()
 
@@ -59,24 +59,32 @@ async def text_to_image(
 
     if params.seed is None:
         params.seed = random.randint(0, 2**32 - 1)
-    if params.num_images_per_prompt > 1:
-        params.seed = [
-            i for i in range(params.seed, params.seed + params.num_images_per_prompt)
-        ]
-
-    try:
-        images, has_nsfw_concept = pipeline(**params.model_dump())
-    except Exception as e:
-        logger.error(f"TextToImagePipeline error: {e}")
-        logger.exception(e)
-        return JSONResponse(
-            status_code=500, content=http_error("TextToImagePipeline error")
-        )
+        if params.num_images_per_prompt > 1:
+            params.seed = [
+                i for i in range(params.seed, params.seed + params.num_images_per_prompt)
+            ]
 
+    if not isinstance(params.seed, list):
+        params.seed = [params.seed]
+
+    num_images_per_prompt = params.num_images_per_prompt
+    params.num_images_per_prompt = 1
+    images = []
+    has_nsfw_concept = []
     seeds = params.seed
-    if not isinstance(seeds, list):
-        seeds = [seeds]
-
+    for i in range(num_images_per_prompt):
+        try:
+            params.seed = [seeds[i]] #pass one seed at a time
+            imgs, nsfw_check = pipeline(**params.model_dump())
+            images.extend(imgs)
+            has_nsfw_concept.extend(nsfw_check)
+        except Exception as e:
+            logger.error(f"TextToImagePipeline error: {e}")
+            logger.exception(e)
+            return JSONResponse(
+                status_code=500, content=http_error("TextToImagePipeline error")
+            )
+
     output_images = []
     for img, sd, is_nsfw in zip(images, seeds, has_nsfw_concept):
         # TODO: Return None once Go codegen tool supports optional properties