stable-diffusion-webui/modules/script_callbacks.py
2023-03-21 18:47:05 +01:00

354 lines
12 KiB
Python

import sys
import traceback
from collections import namedtuple
import inspect
from typing import Optional, Dict, Any
from fastapi import FastAPI
from gradio import Blocks
def report_exception(c, job):
print(f"Error executing callback {job} for {c.script}", file=sys.stderr)
print(traceback.format_exc(), file=sys.stderr)
class ImageSaveParams:
def __init__(self, image, p, filename, pnginfo):
self.image = image
"""the PIL image itself"""
self.p = p
"""p object with processing parameters; either StableDiffusionProcessing or an object with same fields"""
self.filename = filename
"""name of file that the image would be saved to"""
self.pnginfo = pnginfo
"""dictionary with parameters for image's PNG info data; infotext will have the key 'parameters'"""
class CFGDenoiserParams:
def __init__(self, x, image_cond, sigma, sampling_step, total_sampling_steps):
self.x = x
"""Latent image representation in the process of being denoised"""
self.image_cond = image_cond
"""Conditioning image"""
self.sigma = sigma
"""Current sigma noise step value"""
self.sampling_step = sampling_step
"""Current Sampling step number"""
self.total_sampling_steps = total_sampling_steps
"""Total number of sampling steps planned"""
class UiTrainTabParams:
def __init__(self, txt2img_preview_params):
self.txt2img_preview_params = txt2img_preview_params
class ImageGridLoopParams:
def __init__(self, imgs, cols, rows):
self.imgs = imgs
self.cols = cols
self.rows = rows
ScriptCallback = namedtuple("ScriptCallback", ["script", "callback"])
callback_map = dict(
callbacks_app_started=[],
callbacks_model_loaded=[],
callbacks_ui_tabs=[],
callbacks_ui_train_tabs=[],
callbacks_ui_settings=[],
callbacks_before_image_saved=[],
callbacks_image_saved=[],
callbacks_cfg_denoiser=[],
callbacks_before_component=[],
callbacks_after_component=[],
callbacks_image_grid=[],
callbacks_infotext_pasted=[],
callbacks_script_unloaded=[],
callbacks_before_ui=[],
callbacks_on_reload=[],
callbacks_on_polling=[],
)
def clear_callbacks():
for callback_list in callback_map.values():
callback_list.clear()
def app_started_callback(demo: Optional[Blocks], app: FastAPI):
for c in callback_map['callbacks_app_started']:
try:
c.callback(demo, app)
except Exception:
report_exception(c, 'app_started_callback')
def app_polling_callback(demo: Optional[Blocks], app: FastAPI):
for c in callback_map['callbacks_on_polling']:
try:
c.callback()
except Exception:
report_exception(c, 'callbacks_on_polling')
def app_reload_callback(demo: Optional[Blocks], app: FastAPI):
for c in callback_map['callbacks_on_reload']:
try:
c.callback()
except Exception:
report_exception(c, 'callbacks_on_reload')
def model_loaded_callback(sd_model):
for c in callback_map['callbacks_model_loaded']:
try:
c.callback(sd_model)
except Exception:
report_exception(c, 'model_loaded_callback')
def ui_tabs_callback():
res = []
for c in callback_map['callbacks_ui_tabs']:
try:
res += c.callback() or []
except Exception:
report_exception(c, 'ui_tabs_callback')
return res
def ui_train_tabs_callback(params: UiTrainTabParams):
for c in callback_map['callbacks_ui_train_tabs']:
try:
c.callback(params)
except Exception:
report_exception(c, 'callbacks_ui_train_tabs')
def ui_settings_callback():
for c in callback_map['callbacks_ui_settings']:
try:
c.callback()
except Exception:
report_exception(c, 'ui_settings_callback')
def before_image_saved_callback(params: ImageSaveParams):
for c in callback_map['callbacks_before_image_saved']:
try:
c.callback(params)
except Exception:
report_exception(c, 'before_image_saved_callback')
def image_saved_callback(params: ImageSaveParams):
for c in callback_map['callbacks_image_saved']:
try:
c.callback(params)
except Exception:
report_exception(c, 'image_saved_callback')
def cfg_denoiser_callback(params: CFGDenoiserParams):
for c in callback_map['callbacks_cfg_denoiser']:
try:
c.callback(params)
except Exception:
report_exception(c, 'cfg_denoiser_callback')
def before_component_callback(component, **kwargs):
for c in callback_map['callbacks_before_component']:
try:
c.callback(component, **kwargs)
except Exception:
report_exception(c, 'before_component_callback')
def after_component_callback(component, **kwargs):
for c in callback_map['callbacks_after_component']:
try:
c.callback(component, **kwargs)
except Exception:
report_exception(c, 'after_component_callback')
def image_grid_callback(params: ImageGridLoopParams):
for c in callback_map['callbacks_image_grid']:
try:
c.callback(params)
except Exception:
report_exception(c, 'image_grid')
def infotext_pasted_callback(infotext: str, params: Dict[str, Any]):
for c in callback_map['callbacks_infotext_pasted']:
try:
c.callback(infotext, params)
except Exception:
report_exception(c, 'infotext_pasted')
def script_unloaded_callback():
for c in reversed(callback_map['callbacks_script_unloaded']):
try:
c.callback()
except Exception:
report_exception(c, 'script_unloaded')
def before_ui_callback():
for c in reversed(callback_map['callbacks_before_ui']):
try:
c.callback()
except Exception:
report_exception(c, 'before_ui')
def add_callback(callbacks, fun):
stack = [x for x in inspect.stack() if x.filename != __file__]
filename = stack[0].filename if len(stack) > 0 else 'unknown file'
callbacks.append(ScriptCallback(filename, fun))
def remove_current_script_callbacks():
stack = [x for x in inspect.stack() if x.filename != __file__]
filename = stack[0].filename if len(stack) > 0 else 'unknown file'
if filename == 'unknown file':
return
for callback_list in callback_map.values():
for callback_to_remove in [cb for cb in callback_list if cb.script == filename]:
callback_list.remove(callback_to_remove)
def remove_callbacks_for_function(callback_func):
for callback_list in callback_map.values():
for callback_to_remove in [cb for cb in callback_list if cb.callback == callback_func]:
callback_list.remove(callback_to_remove)
def on_app_started(callback):
"""register a function to be called when the webui started, the gradio `Block` component and
fastapi `FastAPI` object are passed as the arguments"""
add_callback(callback_map['callbacks_app_started'], callback)
def on_polling(callback):
"""register a function to be called on each polling of the server."""
add_callback(callback_map['callbacks_on_polling'], callback)
def on_before_reload(callback):
"""register a function to be called just before the server reloads."""
add_callback(callback_map['callbacks_on_reload'], callback)
def on_model_loaded(callback):
"""register a function to be called when the stable diffusion model is created; the model is
passed as an argument; this function is also called when the script is reloaded. """
add_callback(callback_map['callbacks_model_loaded'], callback)
def on_ui_tabs(callback):
"""register a function to be called when the UI is creating new tabs.
The function must either return a None, which means no new tabs to be added, or a list, where
each element is a tuple:
(gradio_component, title, elem_id)
gradio_component is a gradio component to be used for contents of the tab (usually gr.Blocks)
title is tab text displayed to user in the UI
elem_id is HTML id for the tab
"""
add_callback(callback_map['callbacks_ui_tabs'], callback)
def on_ui_train_tabs(callback):
"""register a function to be called when the UI is creating new tabs for the train tab.
Create your new tabs with gr.Tab.
"""
add_callback(callback_map['callbacks_ui_train_tabs'], callback)
def on_ui_settings(callback):
"""register a function to be called before UI settings are populated; add your settings
by using shared.opts.add_option(shared.OptionInfo(...)) """
add_callback(callback_map['callbacks_ui_settings'], callback)
def on_before_image_saved(callback):
"""register a function to be called before an image is saved to a file.
The callback is called with one argument:
- params: ImageSaveParams - parameters the image is to be saved with. You can change fields in this object.
"""
add_callback(callback_map['callbacks_before_image_saved'], callback)
def on_image_saved(callback):
"""register a function to be called after an image is saved to a file.
The callback is called with one argument:
- params: ImageSaveParams - parameters the image was saved with. Changing fields in this object does nothing.
"""
add_callback(callback_map['callbacks_image_saved'], callback)
def on_cfg_denoiser(callback):
"""register a function to be called in the kdiffussion cfg_denoiser method after building the inner model inputs.
The callback is called with one argument:
- params: CFGDenoiserParams - parameters to be passed to the inner model and sampling state details.
"""
add_callback(callback_map['callbacks_cfg_denoiser'], callback)
def on_before_component(callback):
"""register a function to be called before a component is created.
The callback is called with arguments:
- component - gradio component that is about to be created.
- **kwargs - args to gradio.components.IOComponent.__init__ function
Use elem_id/label fields of kwargs to figure out which component it is.
This can be useful to inject your own components somewhere in the middle of vanilla UI.
"""
add_callback(callback_map['callbacks_before_component'], callback)
def on_after_component(callback):
"""register a function to be called after a component is created. See on_before_component for more."""
add_callback(callback_map['callbacks_after_component'], callback)
def on_image_grid(callback):
"""register a function to be called before making an image grid.
The callback is called with one argument:
- params: ImageGridLoopParams - parameters to be used for grid creation. Can be modified.
"""
add_callback(callback_map['callbacks_image_grid'], callback)
def on_infotext_pasted(callback):
"""register a function to be called before applying an infotext.
The callback is called with two arguments:
- infotext: str - raw infotext.
- result: Dict[str, any] - parsed infotext parameters.
"""
add_callback(callback_map['callbacks_infotext_pasted'], callback)
def on_script_unloaded(callback):
"""register a function to be called before the script is unloaded. Any hooks/hijacks/monkeying about that
the script did should be reverted here"""
add_callback(callback_map['callbacks_script_unloaded'], callback)
def on_before_ui(callback):
"""register a function to be called before the UI is created."""
add_callback(callback_map['callbacks_before_ui'], callback)