Upload lora-scripts/sd-scripts/tools/original_control_net.py with huggingface_hub

lora-scripts/sd-scripts/tools/original_control_net.py

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+from typing import List, NamedTuple, Any
+import numpy as np
+import cv2
+import torch
+from safetensors.torch import load_file
+
+from library.original_unet import UNet2DConditionModel, SampleOutput
+
+import library.model_util as model_util
+from library.utils import setup_logging
+setup_logging()
+import logging
+logger = logging.getLogger(__name__)
+
+class ControlNetInfo(NamedTuple):
+    unet: Any
+    net: Any
+    prep: Any
+    weight: float
+    ratio: float
+
+
+class ControlNet(torch.nn.Module):
+    def __init__(self) -> None:
+        super().__init__()
+
+        # make control model
+        self.control_model = torch.nn.Module()
+
+        dims = [320, 320, 320, 320, 640, 640, 640, 1280, 1280, 1280, 1280, 1280]
+        zero_convs = torch.nn.ModuleList()
+        for i, dim in enumerate(dims):
+            sub_list = torch.nn.ModuleList([torch.nn.Conv2d(dim, dim, 1)])
+            zero_convs.append(sub_list)
+        self.control_model.add_module("zero_convs", zero_convs)
+
+        middle_block_out = torch.nn.Conv2d(1280, 1280, 1)
+        self.control_model.add_module("middle_block_out", torch.nn.ModuleList([middle_block_out]))
+
+        dims = [16, 16, 32, 32, 96, 96, 256, 320]
+        strides = [1, 1, 2, 1, 2, 1, 2, 1]
+        prev_dim = 3
+        input_hint_block = torch.nn.Sequential()
+        for i, (dim, stride) in enumerate(zip(dims, strides)):
+            input_hint_block.append(torch.nn.Conv2d(prev_dim, dim, 3, stride, 1))
+            if i < len(dims) - 1:
+                input_hint_block.append(torch.nn.SiLU())
+            prev_dim = dim
+        self.control_model.add_module("input_hint_block", input_hint_block)
+
+
+def load_control_net(v2, unet, model):
+    device = unet.device
+
+    # control sdからキー変換しつつU-Netに対応する部分のみ取り出し、DiffusersのU-Netに読み込む
+    # state dictを読み込む
+    logger.info(f"ControlNet: loading control SD model : {model}")
+
+    if model_util.is_safetensors(model):
+        ctrl_sd_sd = load_file(model)
+    else:
+        ctrl_sd_sd = torch.load(model, map_location="cpu")
+        ctrl_sd_sd = ctrl_sd_sd.pop("state_dict", ctrl_sd_sd)
+
+    # 重みをU-Netに読み込めるようにする。ControlNetはSD版のstate dictなので、それを読み込む
+    is_difference = "difference" in ctrl_sd_sd
+    logger.info(f"ControlNet: loading difference: {is_difference}")
+
+    # ControlNetには存在しないキーがあるので、まず現在のU-NetでSD版の全keyを作っておく
+    # またTransfer Controlの元weightとなる
+    ctrl_unet_sd_sd = model_util.convert_unet_state_dict_to_sd(v2, unet.state_dict())
+
+    # 元のU-Netに影響しないようにコピーする。またprefixが付いていないので付ける
+    for key in list(ctrl_unet_sd_sd.keys()):
+        ctrl_unet_sd_sd["model.diffusion_model." + key] = ctrl_unet_sd_sd.pop(key).clone()
+
+    zero_conv_sd = {}
+    for key in list(ctrl_sd_sd.keys()):
+        if key.startswith("control_"):
+            unet_key = "model.diffusion_" + key[len("control_") :]
+            if unet_key not in ctrl_unet_sd_sd:  # zero conv
+                zero_conv_sd[key] = ctrl_sd_sd[key]
+                continue
+            if is_difference:  # Transfer Control
+                ctrl_unet_sd_sd[unet_key] += ctrl_sd_sd[key].to(device, dtype=unet.dtype)
+            else:
+                ctrl_unet_sd_sd[unet_key] = ctrl_sd_sd[key].to(device, dtype=unet.dtype)
+
+    unet_config = model_util.create_unet_diffusers_config(v2)
+    ctrl_unet_du_sd = model_util.convert_ldm_unet_checkpoint(v2, ctrl_unet_sd_sd, unet_config)  # DiffUsers版ControlNetのstate dict
+
+    # ControlNetのU-Netを作成する
+    ctrl_unet = UNet2DConditionModel(**unet_config)
+    info = ctrl_unet.load_state_dict(ctrl_unet_du_sd)
+    logger.info(f"ControlNet: loading Control U-Net: {info}")
+
+    # U-Net以外のControlNetを作成する
+    # TODO support middle only
+    ctrl_net = ControlNet()
+    info = ctrl_net.load_state_dict(zero_conv_sd)
+    logger.info("ControlNet: loading ControlNet: {info}")
+
+    ctrl_unet.to(unet.device, dtype=unet.dtype)
+    ctrl_net.to(unet.device, dtype=unet.dtype)
+    return ctrl_unet, ctrl_net
+
+
+def load_preprocess(prep_type: str):
+    if prep_type is None or prep_type.lower() == "none":
+        return None
+
+    if prep_type.startswith("canny"):
+        args = prep_type.split("_")
+        th1 = int(args[1]) if len(args) >= 2 else 63
+        th2 = int(args[2]) if len(args) >= 3 else 191
+
+        def canny(img):
+            img = cv2.cvtColor(img, cv2.COLOR_RGB2GRAY)
+            return cv2.Canny(img, th1, th2)
+
+        return canny
+
+    logger.info(f"Unsupported prep type: {prep_type}")
+    return None
+
+
+def preprocess_ctrl_net_hint_image(image):
+    image = np.array(image).astype(np.float32) / 255.0
+    # ControlNetのサンプルはcv2を使っているが、読み込みはGradioなので実はRGBになっている
+    # image = image[:, :, ::-1].copy()                         # rgb to bgr
+    image = image[None].transpose(0, 3, 1, 2)  # nchw
+    image = torch.from_numpy(image)
+    return image  # 0 to 1
+
+
+def get_guided_hints(control_nets: List[ControlNetInfo], num_latent_input, b_size, hints):
+    guided_hints = []
+    for i, cnet_info in enumerate(control_nets):
+        # hintは 1枚目の画像のcnet1, 1枚目の画像のcnet2, 1枚目の画像のcnet3, 2枚目の画像のcnet1, 2枚目の画像のcnet2 ... と並んでいること
+        b_hints = []
+        if len(hints) == 1:  # すべて同じ画像をhintとして使う
+            hint = hints[0]
+            if cnet_info.prep is not None:
+                hint = cnet_info.prep(hint)
+            hint = preprocess_ctrl_net_hint_image(hint)
+            b_hints = [hint for _ in range(b_size)]
+        else:
+            for bi in range(b_size):
+                hint = hints[(bi * len(control_nets) + i) % len(hints)]
+                if cnet_info.prep is not None:
+                    hint = cnet_info.prep(hint)
+                hint = preprocess_ctrl_net_hint_image(hint)
+                b_hints.append(hint)
+        b_hints = torch.cat(b_hints, dim=0)
+        b_hints = b_hints.to(cnet_info.unet.device, dtype=cnet_info.unet.dtype)
+
+        guided_hint = cnet_info.net.control_model.input_hint_block(b_hints)
+        guided_hints.append(guided_hint)
+    return guided_hints
+
+
+def call_unet_and_control_net(
+    step,
+    num_latent_input,
+    original_unet,
+    control_nets: List[ControlNetInfo],
+    guided_hints,
+    current_ratio,
+    sample,
+    timestep,
+    encoder_hidden_states,
+    encoder_hidden_states_for_control_net,
+):
+    # ControlNet
+    # 複数のControlNetの場合は、出力をマージするのではなく交互に適用する
+    cnet_cnt = len(control_nets)
+    cnet_idx = step % cnet_cnt
+    cnet_info = control_nets[cnet_idx]
+
+    # logger.info(current_ratio, cnet_info.prep, cnet_info.weight, cnet_info.ratio)
+    if cnet_info.ratio < current_ratio:
+        return original_unet(sample, timestep, encoder_hidden_states)
+
+    guided_hint = guided_hints[cnet_idx]
+
+    # gradual latent support: match the size of guided_hint to the size of sample
+    if guided_hint.shape[-2:] != sample.shape[-2:]:
+        # print(f"guided_hint.shape={guided_hint.shape}, sample.shape={sample.shape}")
+        org_dtype = guided_hint.dtype
+        if org_dtype == torch.bfloat16:
+            guided_hint = guided_hint.to(torch.float32)
+        guided_hint = torch.nn.functional.interpolate(guided_hint, size=sample.shape[-2:], mode="bicubic")
+        if org_dtype == torch.bfloat16:
+            guided_hint = guided_hint.to(org_dtype)
+
+    guided_hint = guided_hint.repeat((num_latent_input, 1, 1, 1))
+    outs = unet_forward(
+        True, cnet_info.net, cnet_info.unet, guided_hint, None, sample, timestep, encoder_hidden_states_for_control_net
+    )
+    outs = [o * cnet_info.weight for o in outs]
+
+    # U-Net
+    return unet_forward(False, cnet_info.net, original_unet, None, outs, sample, timestep, encoder_hidden_states)
+
+
+"""
+  # これはmergeのバージョン
+  # ControlNet
+  cnet_outs_list = []
+  for i, cnet_info in enumerate(control_nets):
+    # logger.info(current_ratio, cnet_info.prep, cnet_info.weight, cnet_info.ratio)
+    if cnet_info.ratio < current_ratio:
+      continue
+    guided_hint = guided_hints[i]
+    outs = unet_forward(True, cnet_info.net, cnet_info.unet, guided_hint, None, sample, timestep, encoder_hidden_states)
+    for i in range(len(outs)):
+      outs[i] *= cnet_info.weight
+
+    cnet_outs_list.append(outs)
+
+  count = len(cnet_outs_list)
+  if count == 0:
+    return original_unet(sample, timestep, encoder_hidden_states)
+
+  # sum of controlnets
+  for i in range(1, count):
+    cnet_outs_list[0] += cnet_outs_list[i]
+
+  # U-Net
+  return unet_forward(False, cnet_info.net, original_unet, None, cnet_outs_list[0], sample, timestep, encoder_hidden_states)
+"""
+
+
+def unet_forward(
+    is_control_net,
+    control_net: ControlNet,
+    unet: UNet2DConditionModel,
+    guided_hint,
+    ctrl_outs,
+    sample,
+    timestep,
+    encoder_hidden_states,
+):
+    # copy from UNet2DConditionModel
+    default_overall_up_factor = 2**unet.num_upsamplers
+
+    forward_upsample_size = False
+    upsample_size = None
+
+    if any(s % default_overall_up_factor != 0 for s in sample.shape[-2:]):
+        logger.info("Forward upsample size to force interpolation output size.")
+        forward_upsample_size = True
+
+    # 1. time
+    timesteps = timestep
+    if not torch.is_tensor(timesteps):
+        # TODO: this requires sync between CPU and GPU. So try to pass timesteps as tensors if you can
+        # This would be a good case for the `match` statement (Python 3.10+)
+        is_mps = sample.device.type == "mps"
+        if isinstance(timestep, float):
+            dtype = torch.float32 if is_mps else torch.float64
+        else:
+            dtype = torch.int32 if is_mps else torch.int64
+        timesteps = torch.tensor([timesteps], dtype=dtype, device=sample.device)
+    elif len(timesteps.shape) == 0:
+        timesteps = timesteps[None].to(sample.device)
+
+    # broadcast to batch dimension in a way that's compatible with ONNX/Core ML
+    timesteps = timesteps.expand(sample.shape[0])
+
+    t_emb = unet.time_proj(timesteps)
+
+    # timesteps does not contain any weights and will always return f32 tensors
+    # but time_embedding might actually be running in fp16. so we need to cast here.
+    # there might be better ways to encapsulate this.
+    t_emb = t_emb.to(dtype=unet.dtype)
+    emb = unet.time_embedding(t_emb)
+
+    outs = []  # output of ControlNet
+    zc_idx = 0
+
+    # 2. pre-process
+    sample = unet.conv_in(sample)
+    if is_control_net:
+        sample += guided_hint
+        outs.append(control_net.control_model.zero_convs[zc_idx][0](sample))  # , emb, encoder_hidden_states))
+        zc_idx += 1
+
+    # 3. down
+    down_block_res_samples = (sample,)
+    for downsample_block in unet.down_blocks:
+        if downsample_block.has_cross_attention:
+            sample, res_samples = downsample_block(
+                hidden_states=sample,
+                temb=emb,
+                encoder_hidden_states=encoder_hidden_states,
+            )
+        else:
+            sample, res_samples = downsample_block(hidden_states=sample, temb=emb)
+        if is_control_net:
+            for rs in res_samples:
+                outs.append(control_net.control_model.zero_convs[zc_idx][0](rs))  # , emb, encoder_hidden_states))
+                zc_idx += 1
+
+        down_block_res_samples += res_samples
+
+    # 4. mid
+    sample = unet.mid_block(sample, emb, encoder_hidden_states=encoder_hidden_states)
+    if is_control_net:
+        outs.append(control_net.control_model.middle_block_out[0](sample))
+        return outs
+
+    if not is_control_net:
+        sample += ctrl_outs.pop()
+
+    # 5. up
+    for i, upsample_block in enumerate(unet.up_blocks):
+        is_final_block = i == len(unet.up_blocks) - 1
+
+        res_samples = down_block_res_samples[-len(upsample_block.resnets) :]
+        down_block_res_samples = down_block_res_samples[: -len(upsample_block.resnets)]
+
+        if not is_control_net and len(ctrl_outs) > 0:
+            res_samples = list(res_samples)
+            apply_ctrl_outs = ctrl_outs[-len(res_samples) :]
+            ctrl_outs = ctrl_outs[: -len(res_samples)]
+            for j in range(len(res_samples)):
+                res_samples[j] = res_samples[j] + apply_ctrl_outs[j]
+            res_samples = tuple(res_samples)
+
+        # if we have not reached the final block and need to forward the
+        # upsample size, we do it here
+        if not is_final_block and forward_upsample_size:
+            upsample_size = down_block_res_samples[-1].shape[2:]
+
+        if upsample_block.has_cross_attention:
+            sample = upsample_block(
+                hidden_states=sample,
+                temb=emb,
+                res_hidden_states_tuple=res_samples,
+                encoder_hidden_states=encoder_hidden_states,
+                upsample_size=upsample_size,
+            )
+        else:
+            sample = upsample_block(
+                hidden_states=sample, temb=emb, res_hidden_states_tuple=res_samples, upsample_size=upsample_size
+            )
+    # 6. post-process
+    sample = unet.conv_norm_out(sample)
+    sample = unet.conv_act(sample)
+    sample = unet.conv_out(sample)
+
+    return SampleOutput(sample=sample)