Add extra noise callback

3 files changed, 34 insertions, 0 deletions

diff --git a/modules/script_callbacks.py b/modules/script_callbacks.py
index 77ee55ee..fab23551 100644
--- a/modules/script_callbacks.py
+++ b/modules/script_callbacks.py
@@ -28,6 +28,15 @@ class ImageSaveParams:
         """dictionary with parameters for image's PNG info data; infotext will have the key 'parameters'"""

 

 

+class ExtraNoiseParams:

+    def __init__(self, noise, x):

+        self.noise = noise

+        """Random noise generated by the seed"""

+

+        self.x = x

+        """Latent image representation of the image"""

+

+

 class CFGDenoiserParams:

     def __init__(self, x, image_cond, sigma, sampling_step, total_sampling_steps, text_cond, text_uncond):

         self.x = x

@@ -100,6 +109,7 @@ callback_map = dict(
     callbacks_ui_settings=[],

     callbacks_before_image_saved=[],

     callbacks_image_saved=[],

+    callbacks_extra_noise=[],

     callbacks_cfg_denoiser=[],

     callbacks_cfg_denoised=[],

     callbacks_cfg_after_cfg=[],

@@ -189,6 +199,14 @@ def image_saved_callback(params: ImageSaveParams):
             report_exception(c, 'image_saved_callback')

 

 

+def extra_noise_callback(params: ExtraNoiseParams):

+    for c in callback_map['callbacks_extra_noise']:

+        try:

+            c.callback(params)

+        except Exception:

+            report_exception(c, 'callbacks_extra_noise')

+

+

 def cfg_denoiser_callback(params: CFGDenoiserParams):

     for c in callback_map['callbacks_cfg_denoiser']:

         try:

@@ -367,6 +385,14 @@ def on_image_saved(callback):
     add_callback(callback_map['callbacks_image_saved'], callback)

 

 

+def on_extra_noise(callback):

+    """register a function to be called before adding extra noise in img2img or hires fix;

+    The callback is called with one argument:

+        - params: ExtraNoiseParams - contains noise determined by seed and latent representation of image

+    """

+    add_callback(callback_map['callbacks_extra_noise'], 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:

diff --git a/modules/sd_samplers_kdiffusion.py b/modules/sd_samplers_kdiffusion.py
index 08866e41..b9e0d577 100644
--- a/modules/sd_samplers_kdiffusion.py
+++ b/modules/sd_samplers_kdiffusion.py
@@ -3,6 +3,7 @@ import inspect
 import k_diffusion.sampling

 from modules import sd_samplers_common, sd_samplers_extra, sd_samplers_cfg_denoiser

 from modules.sd_samplers_cfg_denoiser import CFGDenoiser  # noqa: F401

+from modules.script_callbacks import ExtraNoiseParams, extra_noise_callback

 

 from modules.shared import opts

 import modules.shared as shared

@@ -147,6 +148,9 @@ class KDiffusionSampler(sd_samplers_common.Sampler):
 

         if opts.img2img_extra_noise > 0:

             p.extra_generation_params["Extra noise"] = opts.img2img_extra_noise

+            extra_noise_params = ExtraNoiseParams(noise, x)

+            extra_noise_callback(extra_noise_params)

+            noise = extra_noise_params.noise

             xi += noise * opts.img2img_extra_noise

 

         extra_params_kwargs = self.initialize(p)

diff --git a/modules/sd_samplers_timesteps.py b/modules/sd_samplers_timesteps.py
index 68aea454..7a6cbd46 100644
--- a/modules/sd_samplers_timesteps.py
+++ b/modules/sd_samplers_timesteps.py
@@ -3,6 +3,7 @@ import inspect
 import sys

 from modules import devices, sd_samplers_common, sd_samplers_timesteps_impl

 from modules.sd_samplers_cfg_denoiser import CFGDenoiser

+from modules.script_callbacks import ExtraNoiseParams, extra_noise_callback

 

 from modules.shared import opts

 import modules.shared as shared

@@ -106,6 +107,9 @@ class CompVisSampler(sd_samplers_common.Sampler):
 

         if opts.img2img_extra_noise > 0:

             p.extra_generation_params["Extra noise"] = opts.img2img_extra_noise

+            extra_noise_params = ExtraNoiseParams(noise, x)

+            extra_noise_callback(extra_noise_params)

+            noise = extra_noise_params.noise

             xi += noise * opts.img2img_extra_noise * sqrt_alpha_cumprod

 

         extra_params_kwargs = self.initialize(p)