stable-diffusion-webui/modules/scripts.py
2023-02-22 01:52:53 -08:00

524 lines
19 KiB
Python

import os
import re
import sys
import traceback
from collections import namedtuple
import gradio as gr
from modules import shared, paths, script_callbacks, extensions, script_loading, scripts_postprocessing
AlwaysVisible = object()
class PostprocessImageArgs:
def __init__(self, image):
self.image = image
class Script:
filename = None
args_from = None
args_to = None
alwayson = False
is_txt2img = False
is_img2img = False
"""A gr.Group component that has all script's UI inside it"""
group = None
infotext_fields = None
"""if set in ui(), this is a list of pairs of gradio component + text; the text will be used when
parsing infotext to set the value for the component; see ui.py's txt2img_paste_fields for an example
"""
def title(self):
"""this function should return the title of the script. This is what will be displayed in the dropdown menu."""
raise NotImplementedError()
def ui(self, is_img2img):
"""this function should create gradio UI elements. See https://gradio.app/docs/#components
The return value should be an array of all components that are used in processing.
Values of those returned components will be passed to run() and process() functions.
"""
pass
def show(self, is_img2img):
"""
is_img2img is True if this function is called for the img2img interface, and Fasle otherwise
This function should return:
- False if the script should not be shown in UI at all
- True if the script should be shown in UI if it's selected in the scripts dropdown
- script.AlwaysVisible if the script should be shown in UI at all times
"""
return True
def run(self, p, *args):
"""
This function is called if the script has been selected in the script dropdown.
It must do all processing and return the Processed object with results, same as
one returned by processing.process_images.
Usually the processing is done by calling the processing.process_images function.
args contains all values returned by components from ui()
"""
pass
def process(self, p, *args):
"""
This function is called before processing begins for AlwaysVisible scripts.
You can modify the processing object (p) here, inject hooks, etc.
args contains all values returned by components from ui()
"""
pass
def before_process_batch(self, p, *args, **kwargs):
"""
Called before extra networks are parsed from the prompt, so you can add
new extra network keywords to the prompt with this callback.
**kwargs will have those items:
- batch_number - index of current batch, from 0 to number of batches-1
- prompts - list of prompts for current batch; you can change contents of this list but changing the number of entries will likely break things
- seeds - list of seeds for current batch
- subseeds - list of subseeds for current batch
"""
pass
def process_batch(self, p, *args, **kwargs):
"""
Same as process(), but called for every batch.
**kwargs will have those items:
- batch_number - index of current batch, from 0 to number of batches-1
- prompts - list of prompts for current batch; you can change contents of this list but changing the number of entries will likely break things
- seeds - list of seeds for current batch
- subseeds - list of subseeds for current batch
"""
pass
def postprocess_batch(self, p, *args, **kwargs):
"""
Same as process_batch(), but called for every batch after it has been generated.
**kwargs will have same items as process_batch, and also:
- batch_number - index of current batch, from 0 to number of batches-1
- images - torch tensor with all generated images, with values ranging from 0 to 1;
"""
pass
def postprocess_image(self, p, pp: PostprocessImageArgs, *args):
"""
Called for every image after it has been generated.
"""
pass
def postprocess(self, p, processed, *args):
"""
This function is called after processing ends for AlwaysVisible scripts.
args contains all values returned by components from ui()
"""
pass
def before_component(self, component, **kwargs):
"""
Called before a component is created.
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.
You can return created components in the ui() function to add them to the list of arguments for your processing functions
"""
pass
def after_component(self, component, **kwargs):
"""
Called after a component is created. Same as above.
"""
pass
def describe(self):
"""unused"""
return ""
def elem_id(self, item_id):
"""helper function to generate id for a HTML element, constructs final id out of script name, tab and user-supplied item_id"""
need_tabname = self.show(True) == self.show(False)
tabname = ('img2img' if self.is_img2img else 'txt2txt') + "_" if need_tabname else ""
title = re.sub(r'[^a-z_0-9]', '', re.sub(r'\s', '_', self.title().lower()))
return f'script_{tabname}{title}_{item_id}'
current_basedir = paths.script_path
def basedir():
"""returns the base directory for the current script. For scripts in the main scripts directory,
this is the main directory (where webui.py resides), and for scripts in extensions directory
(ie extensions/aesthetic/script/aesthetic.py), this is extension's directory (extensions/aesthetic)
"""
return current_basedir
ScriptFile = namedtuple("ScriptFile", ["basedir", "filename", "path"])
scripts_data = []
postprocessing_scripts_data = []
ScriptClassData = namedtuple("ScriptClassData", ["script_class", "path", "basedir", "module"])
def list_scripts(scriptdirname, extension):
scripts_list = []
basedir = os.path.join(paths.script_path, scriptdirname)
if os.path.exists(basedir):
for filename in sorted(os.listdir(basedir)):
scripts_list.append(ScriptFile(paths.script_path, filename, os.path.join(basedir, filename)))
for ext in extensions.active():
scripts_list += ext.list_files(scriptdirname, extension)
scripts_list = [x for x in scripts_list if os.path.splitext(x.path)[1].lower() == extension and os.path.isfile(x.path)]
return scripts_list
def list_files_with_name(filename):
res = []
dirs = [paths.script_path] + [ext.path for ext in extensions.active()]
for dirpath in dirs:
if not os.path.isdir(dirpath):
continue
path = os.path.join(dirpath, filename)
if os.path.isfile(path):
res.append(path)
return res
def load_scripts():
global current_basedir
scripts_data.clear()
postprocessing_scripts_data.clear()
script_callbacks.clear_callbacks()
scripts_list = list_scripts("scripts", ".py")
syspath = sys.path
def register_scripts_from_module(module):
for key, script_class in module.__dict__.items():
if type(script_class) != type:
continue
if issubclass(script_class, Script):
scripts_data.append(ScriptClassData(script_class, scriptfile.path, scriptfile.basedir, module))
elif issubclass(script_class, scripts_postprocessing.ScriptPostprocessing):
postprocessing_scripts_data.append(ScriptClassData(script_class, scriptfile.path, scriptfile.basedir, module))
for scriptfile in sorted(scripts_list):
try:
if scriptfile.basedir != paths.script_path:
sys.path = [scriptfile.basedir] + sys.path
current_basedir = scriptfile.basedir
script_module = script_loading.load_module(scriptfile.path)
register_scripts_from_module(script_module)
except Exception:
print(f"Error loading script: {scriptfile.filename}", file=sys.stderr)
print(traceback.format_exc(), file=sys.stderr)
finally:
sys.path = syspath
current_basedir = paths.script_path
def wrap_call(func, filename, funcname, *args, default=None, **kwargs):
try:
res = func(*args, **kwargs)
return res
except Exception:
print(f"Error calling: {filename}/{funcname}", file=sys.stderr)
print(traceback.format_exc(), file=sys.stderr)
return default
class ScriptRunner:
def __init__(self):
self.scripts = []
self.selectable_scripts = []
self.alwayson_scripts = []
self.titles = []
self.infotext_fields = []
def initialize_scripts(self, is_img2img):
from modules import scripts_auto_postprocessing
self.scripts.clear()
self.alwayson_scripts.clear()
self.selectable_scripts.clear()
auto_processing_scripts = scripts_auto_postprocessing.create_auto_preprocessing_script_data()
for script_class, path, basedir, script_module in auto_processing_scripts + scripts_data:
script = script_class()
script.filename = path
script.is_txt2img = not is_img2img
script.is_img2img = is_img2img
visibility = script.show(script.is_img2img)
if visibility == AlwaysVisible:
self.scripts.append(script)
self.alwayson_scripts.append(script)
script.alwayson = True
elif visibility:
self.scripts.append(script)
self.selectable_scripts.append(script)
def setup_ui(self):
self.titles = [wrap_call(script.title, script.filename, "title") or f"{script.filename} [error]" for script in self.selectable_scripts]
inputs = [None]
inputs_alwayson = [True]
def create_script_ui(script, inputs, inputs_alwayson):
script.args_from = len(inputs)
script.args_to = len(inputs)
controls = wrap_call(script.ui, script.filename, "ui", script.is_img2img)
if controls is None:
return
for control in controls:
control.custom_script_source = os.path.basename(script.filename)
if script.infotext_fields is not None:
self.infotext_fields += script.infotext_fields
inputs += controls
inputs_alwayson += [script.alwayson for _ in controls]
script.args_to = len(inputs)
for script in self.alwayson_scripts:
with gr.Group() as group:
create_script_ui(script, inputs, inputs_alwayson)
script.group = group
dropdown = gr.Dropdown(label="Script", elem_id="script_list", choices=["None"] + self.titles, value="None", type="index")
inputs[0] = dropdown
for script in self.selectable_scripts:
with gr.Group(visible=False) as group:
create_script_ui(script, inputs, inputs_alwayson)
script.group = group
def select_script(script_index):
selected_script = self.selectable_scripts[script_index - 1] if script_index>0 else None
return [gr.update(visible=selected_script == s) for s in self.selectable_scripts]
def init_field(title):
"""called when an initial value is set from ui-config.json to show script's UI components"""
if title == 'None':
return
script_index = self.titles.index(title)
self.selectable_scripts[script_index].group.visible = True
dropdown.init_field = init_field
dropdown.change(
fn=select_script,
inputs=[dropdown],
outputs=[script.group for script in self.selectable_scripts]
)
self.script_load_ctr = 0
def onload_script_visibility(params):
title = params.get('Script', None)
if title:
title_index = self.titles.index(title)
visibility = title_index == self.script_load_ctr
self.script_load_ctr = (self.script_load_ctr + 1) % len(self.titles)
return gr.update(visible=visibility)
else:
return gr.update(visible=False)
self.infotext_fields.append( (dropdown, lambda x: gr.update(value=x.get('Script', 'None'))) )
self.infotext_fields.extend( [(script.group, onload_script_visibility) for script in self.selectable_scripts] )
return inputs
def run(self, p, *args):
script_index = args[0]
if script_index == 0:
return None
script = self.selectable_scripts[script_index-1]
if script is None:
return None
script_args = args[script.args_from:script.args_to]
processed = script.run(p, *script_args)
shared.total_tqdm.clear()
return processed
def process(self, p):
for script in self.alwayson_scripts:
try:
script_args = p.script_args[script.args_from:script.args_to]
script.process(p, *script_args)
except Exception:
print(f"Error running process: {script.filename}", file=sys.stderr)
print(traceback.format_exc(), file=sys.stderr)
def before_process_batch(self, p, **kwargs):
for script in self.alwayson_scripts:
try:
script_args = p.script_args[script.args_from:script.args_to]
script.before_process_batch(p, *script_args, **kwargs)
except Exception:
print(f"Error running before_process_batch: {script.filename}", file=sys.stderr)
print(traceback.format_exc(), file=sys.stderr)
def process_batch(self, p, **kwargs):
for script in self.alwayson_scripts:
try:
script_args = p.script_args[script.args_from:script.args_to]
script.process_batch(p, *script_args, **kwargs)
except Exception:
print(f"Error running process_batch: {script.filename}", file=sys.stderr)
print(traceback.format_exc(), file=sys.stderr)
def postprocess(self, p, processed):
for script in self.alwayson_scripts:
try:
script_args = p.script_args[script.args_from:script.args_to]
script.postprocess(p, processed, *script_args)
except Exception:
print(f"Error running postprocess: {script.filename}", file=sys.stderr)
print(traceback.format_exc(), file=sys.stderr)
def postprocess_batch(self, p, images, **kwargs):
for script in self.alwayson_scripts:
try:
script_args = p.script_args[script.args_from:script.args_to]
script.postprocess_batch(p, *script_args, images=images, **kwargs)
except Exception:
print(f"Error running postprocess_batch: {script.filename}", file=sys.stderr)
print(traceback.format_exc(), file=sys.stderr)
def postprocess_image(self, p, pp: PostprocessImageArgs):
for script in self.alwayson_scripts:
try:
script_args = p.script_args[script.args_from:script.args_to]
script.postprocess_image(p, pp, *script_args)
except Exception:
print(f"Error running postprocess_batch: {script.filename}", file=sys.stderr)
print(traceback.format_exc(), file=sys.stderr)
def before_component(self, component, **kwargs):
for script in self.scripts:
try:
script.before_component(component, **kwargs)
except Exception:
print(f"Error running before_component: {script.filename}", file=sys.stderr)
print(traceback.format_exc(), file=sys.stderr)
def after_component(self, component, **kwargs):
for script in self.scripts:
try:
script.after_component(component, **kwargs)
except Exception:
print(f"Error running after_component: {script.filename}", file=sys.stderr)
print(traceback.format_exc(), file=sys.stderr)
def reload_sources(self, cache):
for si, script in list(enumerate(self.scripts)):
args_from = script.args_from
args_to = script.args_to
filename = script.filename
module = cache.get(filename, None)
if module is None:
module = script_loading.load_module(script.filename)
cache[filename] = module
for key, script_class in module.__dict__.items():
if type(script_class) == type and issubclass(script_class, Script):
self.scripts[si] = script_class()
self.scripts[si].filename = filename
self.scripts[si].args_from = args_from
self.scripts[si].args_to = args_to
scripts_txt2img = ScriptRunner()
scripts_img2img = ScriptRunner()
scripts_postproc = scripts_postprocessing.ScriptPostprocessingRunner()
scripts_current: ScriptRunner = None
def reload_script_body_only():
cache = {}
scripts_txt2img.reload_sources(cache)
scripts_img2img.reload_sources(cache)
def reload_scripts():
global scripts_txt2img, scripts_img2img, scripts_postproc
load_scripts()
scripts_txt2img = ScriptRunner()
scripts_img2img = ScriptRunner()
scripts_postproc = scripts_postprocessing.ScriptPostprocessingRunner()
def IOComponent_init(self, *args, **kwargs):
if scripts_current is not None:
scripts_current.before_component(self, **kwargs)
script_callbacks.before_component_callback(self, **kwargs)
res = original_IOComponent_init(self, *args, **kwargs)
script_callbacks.after_component_callback(self, **kwargs)
if scripts_current is not None:
scripts_current.after_component(self, **kwargs)
return res
original_IOComponent_init = gr.components.IOComponent.__init__
gr.components.IOComponent.__init__ = IOComponent_init