zylv3r · April 3, 2023 03:23 · Apr 3, 2023
diff --git a/loopback-wave.py b/loopback-wave.py
@@ -0,0 +1,346 @@
+# original post: https://rentry.org/sd-loopback-wave
+# original author: https://rentry.org/AnimAnon
+import os
+import platform
+import numpy as np
+from tqdm import trange
+import math
+import subprocess as sp
+import string
+import random
+from functools import reduce
+import re
+
+import modules.scripts as scripts
+import gradio as gr
+
+from modules import processing, shared, sd_samplers, images
+from modules.processing import Processed
+from modules.sd_samplers import samplers
+from modules.shared import opts, cmd_opts, state
+import subprocess
+
+
+wave_completed_regex = r'@wave_completed\(([\-]?[0-9]*\.?[0-9]+), ?([\-]?[0-9]*\.?[0-9]+)\)'
+wave_remaining_regex = r'@wave_remaining\(([\-]?[0-9]*\.?[0-9]+), ?([\-]?[0-9]*\.?[0-9]+)\)'
+
+def run_cmd(cmd):
+    cmd = list(map(lambda arg: str(arg), cmd))
+    print("Executing %s" % " ".join(cmd))
+    popen_params = {"stdout": sp.DEVNULL, "stderr": sp.PIPE, "stdin": sp.DEVNULL}
+
+    if os.name == "nt":
+       popen_params["creationflags"] = 0x08000000
+
+    proc = sp.Popen(cmd, **popen_params)
+    out, err = proc.communicate()  # proc.wait()
+    proc.stderr.close()
+
+    if proc.returncode:
+        raise IOError(err.decode("utf8"))
+
+    del proc
+
+def encode_video(input_pattern, starting_number, output_dir, fps, quality, encoding, create_segments, segment_duration, ffmpeg_path):
+    two_pass = (encoding == "VP9 (webm)")
+    alpha_channel = ("webm" in encoding)
+    suffix = "webm" if "webm" in encoding else "mp4"
+    output_location = output_dir + f".{suffix}"
+
+    encoding_lib = {
+      "VP9 (webm)": "libvpx-vp9",
+      "VP8 (webm)": "libvpx",
+      "H.264 (mp4)": "libx264",
+      "H.265 (mp4)": "libx265",
+    }[encoding]
+
+    args = [
+        "-framerate", fps,
+        "-start_number", int(starting_number),
+        "-i", input_pattern, 
+        "-c:v", encoding_lib, 
+        "-b:v","0", 
+        "-crf", quality,
+        ]
+
+    if encoding_lib == "libvpx-vp9":
+        args += ["-pix_fmt", "yuva420p"]
+
+    if(ffmpeg_path == ""):
+        ffmpeg_path = "ffmpeg"
+        if(platform.system == "Windows"):
+            ffmpeg_path += ".exe"
+
+    print("\n\n")
+    if two_pass:
+        first_pass_args = args + [
+            "-pass", "1",
+            "-an", 
+            "-f", "null",
+            os.devnull
+        ]
+
+        second_pass_args = args + [
+            "-pass", "2",
+            output_location
+        ]
+
+        print("Running first pass ffmpeg encoding")       
+
+        run_cmd([ffmpeg_path] + first_pass_args)
+        print("Running second pass ffmpeg encoding.  This could take awhile...")
+        run_cmd([ffmpeg_path] + second_pass_args)
+    else:
+        print("Running ffmpeg encoding.  This could take awhile...")
+        run_cmd([ffmpeg_path] + args + [output_location])
+
+    if(create_segments):
+      print("Segmenting video")
+      run_cmd([ffmpeg_path] + [
+          "-i", output_location,
+          "-f", "segment",
+          "-segment_time", segment_duration,
+          "-vcodec", "copy",
+          "-acodec", "copy",
+          f"{output_dir}.%d.{suffix}"
+      ])
+
+def set_weights(match_obj, wave_progress):
+  weight_0 = 0
+  weight_1 = 0
+  if match_obj.group(1) is not None:
+    weight_0 = float(match_obj.group(1))
+  if match_obj.group(2) is not None:
+    weight_1 = float(match_obj.group(2))
+
+  max_weight = max(weight_0, weight_1)
+  min_weight = min(weight_0, weight_1)
+
+  weight_range = max_weight - min_weight
+  weight = min_weight + weight_range * wave_progress
+  return str(weight)
+
+
+class Script(scripts.Script):
+    def title(self):
+        return "Loopback Wave V1.4.1"
+
+    def show(self, is_img2img):
+        return is_img2img
+
+    def ui(self, is_img2img):
+        frames = gr.Slider(minimum=1, maximum=2048, step=1, label='Frames', value=100)
+        frames_per_wave = gr.Slider(minimum=0, maximum=120, step=1, label='Frames Per Wave', value=20)
+        denoising_strength_change_amplitude = gr.Slider(minimum=0, maximum=1, step=0.01, label='Max additional denoise', value=0.6)
+        denoising_strength_change_offset = gr.Number(minimum=0, maximum=180, step=1, label='Wave offset (ignore this if you don\'t know what it means)', value=0)
+        initial_image_number = gr.Number(minimum=0, label='Initial generated image number', value=0)
+
+        save_prompts = gr.Checkbox(label='Save prompts as text file', value=True)
+        prompts = gr.Textbox(label="Prompt Changes", lines=5, value="")
+
+        save_video = gr.Checkbox(label='Save results as video', value=True)
+        output_dir = gr.Textbox(label="Video Name", lines=1, value="")
+        video_fps = gr.Slider(minimum=1, maximum=120, step=1, label='Frames per second', value=10)
+        video_quality = gr.Slider(minimum=0, maximum=60, step=1, label='Video Quality (crf)', value=40)
+        video_encoding = gr.Dropdown(label='Video encoding', value="VP9 (webm)", choices=["VP9 (webm)", "VP8 (webm)", "H.265 (mp4)", "H.264 (mp4)"])
+        ffmpeg_path = gr.Textbox(label="ffmpeg binary.  Only set this if it fails otherwise.", lines=1, value="")
+
+        segment_video = gr.Checkbox(label='Cut video in to segments', value=True)
+        video_segment_duration = gr.Slider(minimum=10, maximum=60, step=1, label='Video Segment Duration (seconds)', value=20)
+
+
+        return [frames, denoising_strength_change_amplitude, frames_per_wave, denoising_strength_change_offset,initial_image_number, prompts, save_prompts, save_video, output_dir, video_fps, video_quality, video_encoding, ffmpeg_path, segment_video, video_segment_duration]
+
+    def run(self, p, frames, denoising_strength_change_amplitude, frames_per_wave, denoising_strength_change_offset, initial_image_number, prompts: str,save_prompts, save_video, output_dir, video_fps, video_quality, video_encoding, ffmpeg_path, segment_video, video_segment_duration):
+        processing.fix_seed(p)
+        batch_count = p.n_iter
+        p.extra_generation_params = {
+            "Max Additional Denoise": denoising_strength_change_amplitude,
+            "Frames per wave": frames_per_wave,
+            "Wave Offset": denoising_strength_change_offset,
+        }
+
+        # We save them ourselves for the sake of ffmpeg
+        p.do_not_save_samples = True
+
+        changes_dict = {}
+
+
+        p.batch_size = 1
+        p.n_iter = 1
+
+        output_images, info = None, None
+        initial_seed = None
+        initial_info = None
+
+        grids = []
+        all_images = []
+        original_init_image = p.init_images
+        state.job_count = frames * batch_count
+
+        initial_color_corrections = [processing.setup_color_correction(p.init_images[0])]
+        initial_denoising_strength = p.denoising_strength
+
+        if(output_dir==""):
+            output_dir = str(p.seed)
+        else:
+            output_dir = output_dir + "-" + str(p.seed)
+
+        loopback_wave_path = os.path.join(p.outpath_samples, "loopback-wave")
+        loopback_wave_images_path = os.path.join(loopback_wave_path, output_dir)
+
+        os.makedirs(loopback_wave_images_path, exist_ok=True)
+
+        p.outpath_samples = loopback_wave_images_path
+
+        prompts = prompts.strip()
+
+        if save_prompts:
+            with open(loopback_wave_images_path + "-prompts.txt", "w") as f:
+                generation_settings = [
+                  "Generation Settings",
+                  f"Total Frames: {frames}",
+                  f"Frames Per Wave: {frames_per_wave}",
+                  f"Wave Offset: {denoising_strength_change_offset}",
+                  f"Base Denoising Strength: {initial_denoising_strength}",
+                  f"Max Additional Denoise: {denoising_strength_change_amplitude}",
+                  f"Initial Image Number: {initial_image_number}",
+                  "",
+                  "Video Encoding Settings",
+                  f"Save Video: {save_video}"
+                ]
+
+                if save_video:
+                  generation_settings = generation_settings + [
+                    f"Framerate: {video_fps}",
+                    f"Quality: {video_quality}",
+                    f"Encoding: {video_encoding}",
+                    f"Create Segmented Video: {segment_video}"
+                  ]
+
+                  if segment_video:
+                    generation_settings = generation_settings + [f"Segment Duration: {video_segment_duration}"]
+
+                generation_settings = generation_settings + [
+                  "",
+                  "Prompt Details",
+                  "Initial Prompt:" + p.prompt,
+                  "",
+                  "Negative Prompt:" + p.negative_prompt,
+                  "",
+                  "Frame change prompts:",
+                  prompts
+                ]
+
+
+
+                f.write('\n'.join(generation_settings))
+
+        if prompts:
+            lines = prompts.split("\n")
+            for prompt_line in lines:
+              params = prompt_line.split("::")
+              if len(params) == 2:
+                changes_dict[params[0]] = { "prompt": params[1] }
+              elif len(params) == 3:
+                changes_dict[params[0]] = { "seed": params[1], "prompt": params[2] }
+              else:
+                raise IOError(f"Invalid input in prompt line: {prompt_line}")
+
+        raw_prompt = p.prompt
+
+        for n in range(batch_count):
+            history = []
+
+            # Reset to original init image at the start of each batch
+            p.init_images = original_init_image
+
+            seed_state = "adding"
+            current_seed = p.seed
+
+            for i in range(frames):
+                current_seed = p.seed
+                state.job = ""
+
+                if str(i) in changes_dict:
+                  raw_prompt = changes_dict[str(i)]["prompt"]
+                  state.job = "New prompt: %s\n" % raw_prompt
+
+                  if "seed" in changes_dict[str(i)]:
+                    current_seed = changes_dict[str(i)]["seed"]
+
+                    if current_seed.startswith("+"):
+                      seed_state = "adding"
+                      current_seed = current_seed.strip("+")
+                    elif current_seed.startswith("-"):
+                      seed_state = "subtracting"
+                      current_seed = current_seed.strip("-")
+                    else:
+                      seed_state = "constant"
+
+                    current_seed = int(current_seed)
+                    p.seed = current_seed
+
+
+
+                p.n_iter = 1
+                p.batch_size = 1
+                p.do_not_save_grid = True
+
+                if opts.img2img_color_correction:
+                    p.color_corrections = initial_color_corrections
+
+
+                wave_progress = float(1)/(float(frames_per_wave - 1))*float(((float(i)%float(frames_per_wave)) + ((float(1)/float(180))*denoising_strength_change_offset)))
+                print(wave_progress)
+                new_prompt = re.sub(wave_completed_regex, lambda x: set_weights(x, wave_progress), raw_prompt)
+                new_prompt = re.sub(wave_remaining_regex, lambda x: set_weights(x, 1 - wave_progress), new_prompt)
+                p.prompt = new_prompt
+
+                print(new_prompt)
+
+                denoising_strength_change_rate = 180/frames_per_wave
+
+                cos = abs(math.cos(math.radians(i*denoising_strength_change_rate + denoising_strength_change_offset)))
+                p.denoising_strength = initial_denoising_strength + denoising_strength_change_amplitude - (cos * denoising_strength_change_amplitude)
+
+                state.job += f"Iteration {i + 1}/{frames}, batch {n + 1}/{batch_count}. Denoising Strength: {p.denoising_strength}"
+
+                processed = processing.process_images(p)
+
+                if initial_seed is None:
+                    initial_seed = processed.seed
+                    initial_info = processed.info
+
+                init_img = processed.images[0]
+
+                p.init_images = [init_img]
+
+                if seed_state == "adding":
+                  p.seed = processed.seed + 1
+                elif seed_state == "subtracting":
+                  p.seed = processed.seed - 1
+
+                image_number = int(initial_image_number + i)
+                images.save_image(init_img, p.outpath_samples, "", processed.seed, processed.prompt, forced_filename=str(image_number))
+
+                history.append(init_img)
+
+            grid = images.image_grid(history, rows=1)
+            if opts.grid_save:
+                images.save_image(grid, p.outpath_grids, "grid", initial_seed, p.prompt, opts.grid_format, info=info, short_filename=not opts.grid_extended_filename, grid=True, p=p)
+
+            grids.append(grid)
+            all_images += history
+
+        if opts.return_grid:
+            all_images = grids + all_images
+
+        if save_video:
+            input_pattern = os.path.join(loopback_wave_images_path, "%d.png")
+            encode_video(input_pattern, initial_image_number, loopback_wave_images_path, video_fps, video_quality, video_encoding, segment_video, video_segment_duration, ffmpeg_path)
+
+        processed = Processed(p, all_images, initial_seed, initial_info)
+
+        return processed
+
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