patch for stable-diffusion-webui-distributed compatibility

distributed.patch

diff --git a/modules/script_callbacks.py b/modules/script_callbacks.py
index 4bb45ec..22640d3 100644
--- a/modules/script_callbacks.py
+++ b/modules/script_callbacks.py
@@ -74,6 +74,8 @@ callback_map = dict(
     callbacks_infotext_pasted=[],
     callbacks_script_unloaded=[],
     callbacks_before_ui=[],
+    callbacks_before_image_processed=[],
+    callbacks_after_image_processed=[]
 )
 
 
@@ -98,6 +100,26 @@ def model_loaded_callback(sd_model):
             report_exception(c, 'model_loaded_callback')
 
 
+def before_image_processed_callback(stable_diffusion_processing_txt2img):
+    for c in callback_map['callbacks_before_image_processed']:
+        print(type(c))
+        print(c)
+        try:
+            return c.callback(stable_diffusion_processing_txt2img)
+        except Exception:
+            report_exception(c, 'before_image_processed_callback')
+
+
+def after_image_processed_callback(processed, options):
+    for c in callback_map['callbacks_after_image_processed']:
+        print(type(c))
+        print(c)
+        try:
+            return c.callback(processed, options)
+        except Exception:
+            report_exception(c, 'before_after_image_processed_callback')
+
+
 def ui_tabs_callback():
     res = []
 
@@ -328,3 +350,15 @@ def on_before_ui(callback):
     """register a function to be called before the UI is created."""
 
     add_callback(callback_map['callbacks_before_ui'], callback)
+
+
+def on_before_image_processed(callback):
+    """register a function to be called right before a batch is processed"""
+
+    add_callback(callback_map['callbacks_before_image_processed'], callback)
+
+
+def on_after_image_processed(callback):
+    """register a function to be called right after a batch is processed"""
+
+    add_callback(callback_map['callbacks_after_image_processed'], callback)
diff --git a/modules/txt2img.py b/modules/txt2img.py
index 16841d0..e835e00 100644
--- a/modules/txt2img.py
+++ b/modules/txt2img.py
@@ -7,6 +7,7 @@ from modules.shared import opts, cmd_opts
 import modules.shared as shared
 import modules.processing as processing
 from modules.ui import plaintext_to_html
+from modules import script_callbacks
 
 
 def txt2img(id_task: str, prompt: str, negative_prompt: str, prompt_styles, steps: int, sampler_index: int, restore_faces: bool, tiling: bool, n_iter: int, batch_size: int, cfg_scale: float, seed: int, subseed: int, subseed_strength: float, seed_resize_from_h: int, seed_resize_from_w: int, seed_enable_extras: bool, height: int, width: int, enable_hr: bool, denoising_strength: float, hr_scale: float, hr_upscaler: str, hr_second_pass_steps: int, hr_resize_x: int, hr_resize_y: int, override_settings_texts, *args):
@@ -50,11 +51,14 @@ def txt2img(id_task: str, prompt: str, negative_prompt: str, prompt_styles, step
     if cmd_opts.enable_console_prompts:
         print(f"\ntxt2img: {prompt}", file=shared.progress_print_out)
 
+    script_callbacks.before_image_processed_callback(p)
     processed = modules.scripts.scripts_txt2img.run(p, *args)
 
     if processed is None:
         processed = process_images(p)
 
+    script_callbacks.after_image_processed_callback(processed, p)
+
     p.close()
 
     shared.total_tqdm.clear()