diff --git a/IPA/ip_adapter/__init__.py b/IPA/ip_adapter/__init__.py new file mode 100644 index 0000000..c0da1ff --- /dev/null +++ b/IPA/ip_adapter/__init__.py @@ -0,0 +1 @@ +from .ip_adapter import IPAdapter, IPAdapterXL, IPAdapterPlus, IPAdapterPlusXL diff --git a/IPA/ip_adapter/attention_processor.py b/IPA/ip_adapter/attention_processor.py new file mode 100644 index 0000000..9b6eaed --- /dev/null +++ b/IPA/ip_adapter/attention_processor.py @@ -0,0 +1,553 @@ +# modified from https://github.com/huggingface/diffusers/blob/main/src/diffusers/models/attention_processor.py +import torch +import torch.nn as nn +import torch.nn.functional as F + + +class AttnProcessor(nn.Module): + r""" + Default processor for performing attention-related computations. + """ + def __init__( + self, + hidden_size=None, + cross_attention_dim=None, + ): + super().__init__() + + def __call__( + self, + attn, + hidden_states, + encoder_hidden_states=None, + attention_mask=None, + temb=None, + ): + residual = hidden_states + + if attn.spatial_norm is not None: + hidden_states = attn.spatial_norm(hidden_states, temb) + + input_ndim = hidden_states.ndim + + if input_ndim == 4: + batch_size, channel, height, width = hidden_states.shape + hidden_states = hidden_states.view(batch_size, channel, height * width).transpose(1, 2) + + batch_size, sequence_length, _ = ( + hidden_states.shape if encoder_hidden_states is None else encoder_hidden_states.shape + ) + attention_mask = attn.prepare_attention_mask(attention_mask, sequence_length, batch_size) + + if attn.group_norm is not None: + hidden_states = attn.group_norm(hidden_states.transpose(1, 2)).transpose(1, 2) + + query = attn.to_q(hidden_states) + + if encoder_hidden_states is None: + encoder_hidden_states = hidden_states + elif attn.norm_cross: + encoder_hidden_states = attn.norm_encoder_hidden_states(encoder_hidden_states) + + key = attn.to_k(encoder_hidden_states) + value = attn.to_v(encoder_hidden_states) + + query = attn.head_to_batch_dim(query) + key = attn.head_to_batch_dim(key) + value = attn.head_to_batch_dim(value) + + attention_probs = attn.get_attention_scores(query, key, attention_mask) + hidden_states = torch.bmm(attention_probs, value) + hidden_states = attn.batch_to_head_dim(hidden_states) + + # linear proj + hidden_states = attn.to_out[0](hidden_states) + # dropout + hidden_states = attn.to_out[1](hidden_states) + + if input_ndim == 4: + hidden_states = hidden_states.transpose(-1, -2).reshape(batch_size, channel, height, width) + + if attn.residual_connection: + hidden_states = hidden_states + residual + + hidden_states = hidden_states / attn.rescale_output_factor + + return hidden_states + + +class IPAttnProcessor(nn.Module): + r""" + Attention processor for IP-Adapater. + Args: + hidden_size (`int`): + The hidden size of the attention layer. + cross_attention_dim (`int`): + The number of channels in the `encoder_hidden_states`. + scale (`float`, defaults to 1.0): + the weight scale of image prompt. + num_tokens (`int`, defaults to 4 when do ip_adapter_plus it should be 16): + The context length of the image features. + """ + + def __init__(self, hidden_size, cross_attention_dim=None, scale=1.0, num_tokens=4): + super().__init__() + + self.hidden_size = hidden_size + self.cross_attention_dim = cross_attention_dim + self.scale = scale + self.num_tokens = num_tokens + + self.to_k_ip = nn.Linear(cross_attention_dim or hidden_size, hidden_size, bias=False) + self.to_v_ip = nn.Linear(cross_attention_dim or hidden_size, hidden_size, bias=False) + + def __call__( + self, + attn, + hidden_states, + encoder_hidden_states=None, + attention_mask=None, + temb=None, + ): + residual = hidden_states + + if attn.spatial_norm is not None: + hidden_states = attn.spatial_norm(hidden_states, temb) + + input_ndim = hidden_states.ndim + + if input_ndim == 4: + batch_size, channel, height, width = hidden_states.shape + hidden_states = hidden_states.view(batch_size, channel, height * width).transpose(1, 2) + + batch_size, sequence_length, _ = ( + hidden_states.shape if encoder_hidden_states is None else encoder_hidden_states.shape + ) + attention_mask = attn.prepare_attention_mask(attention_mask, sequence_length, batch_size) + + if attn.group_norm is not None: + hidden_states = attn.group_norm(hidden_states.transpose(1, 2)).transpose(1, 2) + + query = attn.to_q(hidden_states) + + if encoder_hidden_states is None: + encoder_hidden_states = hidden_states + else: + # get encoder_hidden_states, ip_hidden_states + end_pos = encoder_hidden_states.shape[1] - self.num_tokens + encoder_hidden_states, ip_hidden_states = encoder_hidden_states[:, :end_pos, :], encoder_hidden_states[:, end_pos:, :] + if attn.norm_cross: + encoder_hidden_states = attn.norm_encoder_hidden_states(encoder_hidden_states) + + key = attn.to_k(encoder_hidden_states) + value = attn.to_v(encoder_hidden_states) + + query = attn.head_to_batch_dim(query) + key = attn.head_to_batch_dim(key) + value = attn.head_to_batch_dim(value) + + attention_probs = attn.get_attention_scores(query, key, attention_mask) + hidden_states = torch.bmm(attention_probs, value) + hidden_states = attn.batch_to_head_dim(hidden_states) + + # for ip-adapter + ip_key = self.to_k_ip(ip_hidden_states) + ip_value = self.to_v_ip(ip_hidden_states) + + ip_key = attn.head_to_batch_dim(ip_key) + ip_value = attn.head_to_batch_dim(ip_value) + + ip_attention_probs = attn.get_attention_scores(query, ip_key, None) + ip_hidden_states = torch.bmm(ip_attention_probs, ip_value) + ip_hidden_states = attn.batch_to_head_dim(ip_hidden_states) + + hidden_states = hidden_states + self.scale * ip_hidden_states + + # linear proj + hidden_states = attn.to_out[0](hidden_states) + # dropout + hidden_states = attn.to_out[1](hidden_states) + + if input_ndim == 4: + hidden_states = hidden_states.transpose(-1, -2).reshape(batch_size, channel, height, width) + + if attn.residual_connection: + hidden_states = hidden_states + residual + + hidden_states = hidden_states / attn.rescale_output_factor + + return hidden_states + + +class AttnProcessor2_0(torch.nn.Module): + r""" + Processor for implementing scaled dot-product attention (enabled by default if you're using PyTorch 2.0). + """ + def __init__( + self, + hidden_size=None, + cross_attention_dim=None, + ): + super().__init__() + if not hasattr(F, "scaled_dot_product_attention"): + raise ImportError("AttnProcessor2_0 requires PyTorch 2.0, to use it, please upgrade PyTorch to 2.0.") + + def __call__( + self, + attn, + hidden_states, + encoder_hidden_states=None, + attention_mask=None, + temb=None, + ): + residual = hidden_states + + if attn.spatial_norm is not None: + hidden_states = attn.spatial_norm(hidden_states, temb) + + input_ndim = hidden_states.ndim + + if input_ndim == 4: + batch_size, channel, height, width = hidden_states.shape + hidden_states = hidden_states.view(batch_size, channel, height * width).transpose(1, 2) + + batch_size, sequence_length, _ = ( + hidden_states.shape if encoder_hidden_states is None else encoder_hidden_states.shape + ) + + if attention_mask is not None: + attention_mask = attn.prepare_attention_mask(attention_mask, sequence_length, batch_size) + # scaled_dot_product_attention expects attention_mask shape to be + # (batch, heads, source_length, target_length) + attention_mask = attention_mask.view(batch_size, attn.heads, -1, attention_mask.shape[-1]) + + if attn.group_norm is not None: + hidden_states = attn.group_norm(hidden_states.transpose(1, 2)).transpose(1, 2) + + query = attn.to_q(hidden_states) + + if encoder_hidden_states is None: + encoder_hidden_states = hidden_states + elif attn.norm_cross: + encoder_hidden_states = attn.norm_encoder_hidden_states(encoder_hidden_states) + + key = attn.to_k(encoder_hidden_states) + value = attn.to_v(encoder_hidden_states) + + inner_dim = key.shape[-1] + head_dim = inner_dim // attn.heads + + query = query.view(batch_size, -1, attn.heads, head_dim).transpose(1, 2) + + key = key.view(batch_size, -1, attn.heads, head_dim).transpose(1, 2) + value = value.view(batch_size, -1, attn.heads, head_dim).transpose(1, 2) + + # the output of sdp = (batch, num_heads, seq_len, head_dim) + # TODO: add support for attn.scale when we move to Torch 2.1 + hidden_states = F.scaled_dot_product_attention( + query, key, value, attn_mask=attention_mask, dropout_p=0.0, is_causal=False + ) + + hidden_states = hidden_states.transpose(1, 2).reshape(batch_size, -1, attn.heads * head_dim) + hidden_states = hidden_states.to(query.dtype) + + # linear proj + hidden_states = attn.to_out[0](hidden_states) + # dropout + hidden_states = attn.to_out[1](hidden_states) + + if input_ndim == 4: + hidden_states = hidden_states.transpose(-1, -2).reshape(batch_size, channel, height, width) + + if attn.residual_connection: + hidden_states = hidden_states + residual + + hidden_states = hidden_states / attn.rescale_output_factor + + return hidden_states + + +class IPAttnProcessor2_0(torch.nn.Module): + r""" + Attention processor for IP-Adapater for PyTorch 2.0. + Args: + hidden_size (`int`): + The hidden size of the attention layer. + cross_attention_dim (`int`): + The number of channels in the `encoder_hidden_states`. + scale (`float`, defaults to 1.0): + the weight scale of image prompt. + num_tokens (`int`, defaults to 4 when do ip_adapter_plus it should be 16): + The context length of the image features. + """ + + def __init__(self, hidden_size, cross_attention_dim=None, scale=1.0, num_tokens=4): + super().__init__() + + if not hasattr(F, "scaled_dot_product_attention"): + raise ImportError("AttnProcessor2_0 requires PyTorch 2.0, to use it, please upgrade PyTorch to 2.0.") + + self.hidden_size = hidden_size + self.cross_attention_dim = cross_attention_dim + self.scale = scale + self.num_tokens = num_tokens + + self.to_k_ip = nn.Linear(cross_attention_dim or hidden_size, hidden_size, bias=False) + self.to_v_ip = nn.Linear(cross_attention_dim or hidden_size, hidden_size, bias=False) + + def __call__( + self, + attn, + hidden_states, + encoder_hidden_states=None, + attention_mask=None, + temb=None, + ): + residual = hidden_states + + if attn.spatial_norm is not None: + hidden_states = attn.spatial_norm(hidden_states, temb) + + input_ndim = hidden_states.ndim + + if input_ndim == 4: + batch_size, channel, height, width = hidden_states.shape + hidden_states = hidden_states.view(batch_size, channel, height * width).transpose(1, 2) + + batch_size, sequence_length, _ = ( + hidden_states.shape if encoder_hidden_states is None else encoder_hidden_states.shape + ) + + if attention_mask is not None: + attention_mask = attn.prepare_attention_mask(attention_mask, sequence_length, batch_size) + # scaled_dot_product_attention expects attention_mask shape to be + # (batch, heads, source_length, target_length) + attention_mask = attention_mask.view(batch_size, attn.heads, -1, attention_mask.shape[-1]) + + if attn.group_norm is not None: + hidden_states = attn.group_norm(hidden_states.transpose(1, 2)).transpose(1, 2) + + query = attn.to_q(hidden_states) + + if encoder_hidden_states is None: + encoder_hidden_states = hidden_states + else: + # get encoder_hidden_states, ip_hidden_states + end_pos = encoder_hidden_states.shape[1] - self.num_tokens + encoder_hidden_states, ip_hidden_states = encoder_hidden_states[:, :end_pos, :], encoder_hidden_states[:, end_pos:, :] + if attn.norm_cross: + encoder_hidden_states = attn.norm_encoder_hidden_states(encoder_hidden_states) + + key = attn.to_k(encoder_hidden_states) + value = attn.to_v(encoder_hidden_states) + + inner_dim = key.shape[-1] + head_dim = inner_dim // attn.heads + + query = query.view(batch_size, -1, attn.heads, head_dim).transpose(1, 2) + + key = key.view(batch_size, -1, attn.heads, head_dim).transpose(1, 2) + value = value.view(batch_size, -1, attn.heads, head_dim).transpose(1, 2) + + # the output of sdp = (batch, num_heads, seq_len, head_dim) + # TODO: add support for attn.scale when we move to Torch 2.1 + hidden_states = F.scaled_dot_product_attention( + query, key, value, attn_mask=attention_mask, dropout_p=0.0, is_causal=False + ) + + hidden_states = hidden_states.transpose(1, 2).reshape(batch_size, -1, attn.heads * head_dim) + hidden_states = hidden_states.to(query.dtype) + + # for ip-adapter + ip_key = self.to_k_ip(ip_hidden_states) + ip_value = self.to_v_ip(ip_hidden_states) + + ip_key = ip_key.view(batch_size, -1, attn.heads, head_dim).transpose(1, 2) + ip_value = ip_value.view(batch_size, -1, attn.heads, head_dim).transpose(1, 2) + + # the output of sdp = (batch, num_heads, seq_len, head_dim) + # TODO: add support for attn.scale when we move to Torch 2.1 + ip_hidden_states = F.scaled_dot_product_attention( + query, ip_key, ip_value, attn_mask=None, dropout_p=0.0, is_causal=False + ) + + ip_hidden_states = ip_hidden_states.transpose(1, 2).reshape(batch_size, -1, attn.heads * head_dim) + ip_hidden_states = ip_hidden_states.to(query.dtype) + + hidden_states = hidden_states + self.scale * ip_hidden_states + + # linear proj + hidden_states = attn.to_out[0](hidden_states) + # dropout + hidden_states = attn.to_out[1](hidden_states) + + if input_ndim == 4: + hidden_states = hidden_states.transpose(-1, -2).reshape(batch_size, channel, height, width) + + if attn.residual_connection: + hidden_states = hidden_states + residual + + hidden_states = hidden_states / attn.rescale_output_factor + + return hidden_states + + +## for controlnet +class CNAttnProcessor: + r""" + Default processor for performing attention-related computations. + """ + + def __init__(self, num_tokens=4): + self.num_tokens = num_tokens + + def __call__( + self, + attn, + hidden_states, + encoder_hidden_states=None, + attention_mask=None, + temb=None + ): + residual = hidden_states + + if attn.spatial_norm is not None: + hidden_states = attn.spatial_norm(hidden_states, temb) + + input_ndim = hidden_states.ndim + + if input_ndim == 4: + batch_size, channel, height, width = hidden_states.shape + hidden_states = hidden_states.view(batch_size, channel, height * width).transpose(1, 2) + + batch_size, sequence_length, _ = ( + hidden_states.shape if encoder_hidden_states is None else encoder_hidden_states.shape + ) + attention_mask = attn.prepare_attention_mask(attention_mask, sequence_length, batch_size) + + if attn.group_norm is not None: + hidden_states = attn.group_norm(hidden_states.transpose(1, 2)).transpose(1, 2) + + query = attn.to_q(hidden_states) + + if encoder_hidden_states is None: + encoder_hidden_states = hidden_states + else: + end_pos = encoder_hidden_states.shape[1] - self.num_tokens + encoder_hidden_states = encoder_hidden_states[:, :end_pos] # only use text + if attn.norm_cross: + encoder_hidden_states = attn.norm_encoder_hidden_states(encoder_hidden_states) + + key = attn.to_k(encoder_hidden_states) + value = attn.to_v(encoder_hidden_states) + + query = attn.head_to_batch_dim(query) + key = attn.head_to_batch_dim(key) + value = attn.head_to_batch_dim(value) + + attention_probs = attn.get_attention_scores(query, key, attention_mask) + hidden_states = torch.bmm(attention_probs, value) + hidden_states = attn.batch_to_head_dim(hidden_states) + + # linear proj + hidden_states = attn.to_out[0](hidden_states) + # dropout + hidden_states = attn.to_out[1](hidden_states) + + if input_ndim == 4: + hidden_states = hidden_states.transpose(-1, -2).reshape(batch_size, channel, height, width) + + if attn.residual_connection: + hidden_states = hidden_states + residual + + hidden_states = hidden_states / attn.rescale_output_factor + + return hidden_states + + +class CNAttnProcessor2_0: + r""" + Processor for implementing scaled dot-product attention (enabled by default if you're using PyTorch 2.0). + """ + + def __init__(self, num_tokens=4): + if not hasattr(F, "scaled_dot_product_attention"): + raise ImportError("AttnProcessor2_0 requires PyTorch 2.0, to use it, please upgrade PyTorch to 2.0.") + self.num_tokens = num_tokens + + def __call__( + self, + attn, + hidden_states, + encoder_hidden_states=None, + attention_mask=None, + temb=None, + ): + residual = hidden_states + + if attn.spatial_norm is not None: + hidden_states = attn.spatial_norm(hidden_states, temb) + + input_ndim = hidden_states.ndim + + if input_ndim == 4: + batch_size, channel, height, width = hidden_states.shape + hidden_states = hidden_states.view(batch_size, channel, height * width).transpose(1, 2) + + batch_size, sequence_length, _ = ( + hidden_states.shape if encoder_hidden_states is None else encoder_hidden_states.shape + ) + + if attention_mask is not None: + attention_mask = attn.prepare_attention_mask(attention_mask, sequence_length, batch_size) + # scaled_dot_product_attention expects attention_mask shape to be + # (batch, heads, source_length, target_length) + attention_mask = attention_mask.view(batch_size, attn.heads, -1, attention_mask.shape[-1]) + + if attn.group_norm is not None: + hidden_states = attn.group_norm(hidden_states.transpose(1, 2)).transpose(1, 2) + + query = attn.to_q(hidden_states) + + if encoder_hidden_states is None: + encoder_hidden_states = hidden_states + else: + end_pos = encoder_hidden_states.shape[1] - self.num_tokens + encoder_hidden_states = encoder_hidden_states[:, :end_pos] # only use text + if attn.norm_cross: + encoder_hidden_states = attn.norm_encoder_hidden_states(encoder_hidden_states) + + key = attn.to_k(encoder_hidden_states) + value = attn.to_v(encoder_hidden_states) + + inner_dim = key.shape[-1] + head_dim = inner_dim // attn.heads + + query = query.view(batch_size, -1, attn.heads, head_dim).transpose(1, 2) + + key = key.view(batch_size, -1, attn.heads, head_dim).transpose(1, 2) + value = value.view(batch_size, -1, attn.heads, head_dim).transpose(1, 2) + + # the output of sdp = (batch, num_heads, seq_len, head_dim) + # TODO: add support for attn.scale when we move to Torch 2.1 + hidden_states = F.scaled_dot_product_attention( + query, key, value, attn_mask=attention_mask, dropout_p=0.0, is_causal=False + ) + + hidden_states = hidden_states.transpose(1, 2).reshape(batch_size, -1, attn.heads * head_dim) + hidden_states = hidden_states.to(query.dtype) + + # linear proj + hidden_states = attn.to_out[0](hidden_states) + # dropout + hidden_states = attn.to_out[1](hidden_states) + + if input_ndim == 4: + hidden_states = hidden_states.transpose(-1, -2).reshape(batch_size, channel, height, width) + + if attn.residual_connection: + hidden_states = hidden_states + residual + + hidden_states = hidden_states / attn.rescale_output_factor + + return hidden_states \ No newline at end of file diff --git a/IPA/ip_adapter/custom_pipelines.py b/IPA/ip_adapter/custom_pipelines.py new file mode 100644 index 0000000..015bbb0 --- /dev/null +++ b/IPA/ip_adapter/custom_pipelines.py @@ -0,0 +1,405 @@ +import inspect +from typing import Any, Callable, Dict, List, Optional, Tuple, Union + +import torch + +from diffusers import StableDiffusionXLPipeline +from diffusers.pipelines.stable_diffusion_xl import StableDiffusionXLPipelineOutput +from diffusers.pipelines.stable_diffusion_xl.pipeline_stable_diffusion_xl import rescale_noise_cfg + + +from .utils import is_torch2_available +if is_torch2_available(): + from .attention_processor import IPAttnProcessor2_0 as IPAttnProcessor +else: + from .attention_processor import IPAttnProcessor + + +class StableDiffusionXLCustomPipeline(StableDiffusionXLPipeline): + + def set_scale(self, scale): + for attn_processor in self.unet.attn_processors.values(): + if isinstance(attn_processor, IPAttnProcessor): + attn_processor.scale = scale + + @torch.no_grad() + def __call__( + self, + prompt: Union[str, List[str]] = None, + prompt_2: Optional[Union[str, List[str]]] = None, + height: Optional[int] = None, + width: Optional[int] = None, + num_inference_steps: int = 50, + denoising_end: Optional[float] = None, + guidance_scale: float = 5.0, + negative_prompt: Optional[Union[str, List[str]]] = None, + negative_prompt_2: Optional[Union[str, List[str]]] = None, + num_images_per_prompt: Optional[int] = 1, + eta: float = 0.0, + generator: Optional[Union[torch.Generator, List[torch.Generator]]] = None, + latents: Optional[torch.FloatTensor] = None, + prompt_embeds: Optional[torch.FloatTensor] = None, + negative_prompt_embeds: Optional[torch.FloatTensor] = None, + pooled_prompt_embeds: Optional[torch.FloatTensor] = None, + negative_pooled_prompt_embeds: Optional[torch.FloatTensor] = None, + output_type: Optional[str] = "pil", + return_dict: bool = True, + callback: Optional[Callable[[int, int, torch.FloatTensor], None]] = None, + callback_steps: int = 1, + cross_attention_kwargs: Optional[Dict[str, Any]] = None, + guidance_rescale: float = 0.0, + original_size: Optional[Tuple[int, int]] = None, + crops_coords_top_left: Tuple[int, int] = (0, 0), + target_size: Optional[Tuple[int, int]] = None, + negative_original_size: Optional[Tuple[int, int]] = None, + negative_crops_coords_top_left: Tuple[int, int] = (0, 0), + negative_target_size: Optional[Tuple[int, int]] = None, + control_guidance_start: float = 0.0, + control_guidance_end: float = 1.0, + ): + r""" + Function invoked when calling the pipeline for generation. + + Args: + prompt (`str` or `List[str]`, *optional*): + The prompt or prompts to guide the image generation. If not defined, one has to pass `prompt_embeds`. + instead. + prompt_2 (`str` or `List[str]`, *optional*): + The prompt or prompts to be sent to the `tokenizer_2` and `text_encoder_2`. If not defined, `prompt` is + used in both text-encoders + height (`int`, *optional*, defaults to self.unet.config.sample_size * self.vae_scale_factor): + The height in pixels of the generated image. This is set to 1024 by default for the best results. + Anything below 512 pixels won't work well for + [stabilityai/stable-diffusion-xl-base-1.0](https://huggingface.co/stabilityai/stable-diffusion-xl-base-1.0) + and checkpoints that are not specifically fine-tuned on low resolutions. + width (`int`, *optional*, defaults to self.unet.config.sample_size * self.vae_scale_factor): + The width in pixels of the generated image. This is set to 1024 by default for the best results. + Anything below 512 pixels won't work well for + [stabilityai/stable-diffusion-xl-base-1.0](https://huggingface.co/stabilityai/stable-diffusion-xl-base-1.0) + and checkpoints that are not specifically fine-tuned on low resolutions. + num_inference_steps (`int`, *optional*, defaults to 50): + The number of denoising steps. More denoising steps usually lead to a higher quality image at the + expense of slower inference. + denoising_end (`float`, *optional*): + When specified, determines the fraction (between 0.0 and 1.0) of the total denoising process to be + completed before it is intentionally prematurely terminated. As a result, the returned sample will + still retain a substantial amount of noise as determined by the discrete timesteps selected by the + scheduler. The denoising_end parameter should ideally be utilized when this pipeline forms a part of a + "Mixture of Denoisers" multi-pipeline setup, as elaborated in [**Refining the Image + Output**](https://huggingface.co/docs/diffusers/api/pipelines/stable_diffusion/stable_diffusion_xl#refining-the-image-output) + guidance_scale (`float`, *optional*, defaults to 5.0): + Guidance scale as defined in [Classifier-Free Diffusion Guidance](https://arxiv.org/abs/2207.12598). + `guidance_scale` is defined as `w` of equation 2. of [Imagen + Paper](https://arxiv.org/pdf/2205.11487.pdf). Guidance scale is enabled by setting `guidance_scale > + 1`. Higher guidance scale encourages to generate images that are closely linked to the text `prompt`, + usually at the expense of lower image quality. + negative_prompt (`str` or `List[str]`, *optional*): + The prompt or prompts not to guide the image generation. If not defined, one has to pass + `negative_prompt_embeds` instead. Ignored when not using guidance (i.e., ignored if `guidance_scale` is + less than `1`). + negative_prompt_2 (`str` or `List[str]`, *optional*): + The prompt or prompts not to guide the image generation to be sent to `tokenizer_2` and + `text_encoder_2`. If not defined, `negative_prompt` is used in both text-encoders + num_images_per_prompt (`int`, *optional*, defaults to 1): + The number of images to generate per prompt. + eta (`float`, *optional*, defaults to 0.0): + Corresponds to parameter eta (η) in the DDIM paper: https://arxiv.org/abs/2010.02502. Only applies to + [`schedulers.DDIMScheduler`], will be ignored for others. + generator (`torch.Generator` or `List[torch.Generator]`, *optional*): + One or a list of [torch generator(s)](https://pytorch.org/docs/stable/generated/torch.Generator.html) + to make generation deterministic. + latents (`torch.FloatTensor`, *optional*): + Pre-generated noisy latents, sampled from a Gaussian distribution, to be used as inputs for image + generation. Can be used to tweak the same generation with different prompts. If not provided, a latents + tensor will ge generated by sampling using the supplied random `generator`. + prompt_embeds (`torch.FloatTensor`, *optional*): + Pre-generated text embeddings. Can be used to easily tweak text inputs, *e.g.* prompt weighting. If not + provided, text embeddings will be generated from `prompt` input argument. + negative_prompt_embeds (`torch.FloatTensor`, *optional*): + Pre-generated negative text embeddings. Can be used to easily tweak text inputs, *e.g.* prompt + weighting. If not provided, negative_prompt_embeds will be generated from `negative_prompt` input + argument. + pooled_prompt_embeds (`torch.FloatTensor`, *optional*): + Pre-generated pooled text embeddings. Can be used to easily tweak text inputs, *e.g.* prompt weighting. + If not provided, pooled text embeddings will be generated from `prompt` input argument. + negative_pooled_prompt_embeds (`torch.FloatTensor`, *optional*): + Pre-generated negative pooled text embeddings. Can be used to easily tweak text inputs, *e.g.* prompt + weighting. If not provided, pooled negative_prompt_embeds will be generated from `negative_prompt` + input argument. + output_type (`str`, *optional*, defaults to `"pil"`): + The output format of the generate image. Choose between + [PIL](https://pillow.readthedocs.io/en/stable/): `PIL.Image.Image` or `np.array`. + return_dict (`bool`, *optional*, defaults to `True`): + Whether or not to return a [`~pipelines.stable_diffusion_xl.StableDiffusionXLPipelineOutput`] instead + of a plain tuple. + callback (`Callable`, *optional*): + A function that will be called every `callback_steps` steps during inference. The function will be + called with the following arguments: `callback(step: int, timestep: int, latents: torch.FloatTensor)`. + callback_steps (`int`, *optional*, defaults to 1): + The frequency at which the `callback` function will be called. If not specified, the callback will be + called at every step. + cross_attention_kwargs (`dict`, *optional*): + A kwargs dictionary that if specified is passed along to the `AttentionProcessor` as defined under + `self.processor` in + [diffusers.models.attention_processor](https://github.com/huggingface/diffusers/blob/main/src/diffusers/models/attention_processor.py). + guidance_rescale (`float`, *optional*, defaults to 0.7): + Guidance rescale factor proposed by [Common Diffusion Noise Schedules and Sample Steps are + Flawed](https://arxiv.org/pdf/2305.08891.pdf) `guidance_scale` is defined as `φ` in equation 16. of + [Common Diffusion Noise Schedules and Sample Steps are Flawed](https://arxiv.org/pdf/2305.08891.pdf). + Guidance rescale factor should fix overexposure when using zero terminal SNR. + original_size (`Tuple[int]`, *optional*, defaults to (1024, 1024)): + If `original_size` is not the same as `target_size` the image will appear to be down- or upsampled. + `original_size` defaults to `(width, height)` if not specified. Part of SDXL's micro-conditioning as + explained in section 2.2 of + [https://huggingface.co/papers/2307.01952](https://huggingface.co/papers/2307.01952). + crops_coords_top_left (`Tuple[int]`, *optional*, defaults to (0, 0)): + `crops_coords_top_left` can be used to generate an image that appears to be "cropped" from the position + `crops_coords_top_left` downwards. Favorable, well-centered images are usually achieved by setting + `crops_coords_top_left` to (0, 0). Part of SDXL's micro-conditioning as explained in section 2.2 of + [https://huggingface.co/papers/2307.01952](https://huggingface.co/papers/2307.01952). + target_size (`Tuple[int]`, *optional*, defaults to (1024, 1024)): + For most cases, `target_size` should be set to the desired height and width of the generated image. If + not specified it will default to `(width, height)`. Part of SDXL's micro-conditioning as explained in + section 2.2 of [https://huggingface.co/papers/2307.01952](https://huggingface.co/papers/2307.01952). + negative_original_size (`Tuple[int]`, *optional*, defaults to (1024, 1024)): + To negatively condition the generation process based on a specific image resolution. Part of SDXL's + micro-conditioning as explained in section 2.2 of + [https://huggingface.co/papers/2307.01952](https://huggingface.co/papers/2307.01952). For more + information, refer to this issue thread: https://github.com/huggingface/diffusers/issues/4208. + negative_crops_coords_top_left (`Tuple[int]`, *optional*, defaults to (0, 0)): + To negatively condition the generation process based on a specific crop coordinates. Part of SDXL's + micro-conditioning as explained in section 2.2 of + [https://huggingface.co/papers/2307.01952](https://huggingface.co/papers/2307.01952). For more + information, refer to this issue thread: https://github.com/huggingface/diffusers/issues/4208. + negative_target_size (`Tuple[int]`, *optional*, defaults to (1024, 1024)): + To negatively condition the generation process based on a target image resolution. It should be as same + as the `target_size` for most cases. Part of SDXL's micro-conditioning as explained in section 2.2 of + [https://huggingface.co/papers/2307.01952](https://huggingface.co/papers/2307.01952). For more + information, refer to this issue thread: https://github.com/huggingface/diffusers/issues/4208. + control_guidance_start (`float`, *optional*, defaults to 0.0): + The percentage of total steps at which the ControlNet starts applying. + control_guidance_end (`float`, *optional*, defaults to 1.0): + The percentage of total steps at which the ControlNet stops applying. + + Examples: + + Returns: + [`~pipelines.stable_diffusion_xl.StableDiffusionXLPipelineOutput`] or `tuple`: + [`~pipelines.stable_diffusion_xl.StableDiffusionXLPipelineOutput`] if `return_dict` is True, otherwise a + `tuple`. When returning a tuple, the first element is a list with the generated images. + """ + # 0. Default height and width to unet + height = height or self.default_sample_size * self.vae_scale_factor + width = width or self.default_sample_size * self.vae_scale_factor + + original_size = original_size or (height, width) + target_size = target_size or (height, width) + + # 1. Check inputs. Raise error if not correct + self.check_inputs( + prompt, + prompt_2, + height, + width, + callback_steps, + negative_prompt, + negative_prompt_2, + prompt_embeds, + negative_prompt_embeds, + pooled_prompt_embeds, + negative_pooled_prompt_embeds, + ) + + # 2. Define call parameters + if prompt is not None and isinstance(prompt, str): + batch_size = 1 + elif prompt is not None and isinstance(prompt, list): + batch_size = len(prompt) + else: + batch_size = prompt_embeds.shape[0] + + device = self._execution_device + + # here `guidance_scale` is defined analog to the guidance weight `w` of equation (2) + # of the Imagen paper: https://arxiv.org/pdf/2205.11487.pdf . `guidance_scale = 1` + # corresponds to doing no classifier free guidance. + do_classifier_free_guidance = guidance_scale > 1.0 + + # 3. Encode input prompt + text_encoder_lora_scale = ( + cross_attention_kwargs.get("scale", None) if cross_attention_kwargs is not None else None + ) + ( + prompt_embeds, + negative_prompt_embeds, + pooled_prompt_embeds, + negative_pooled_prompt_embeds, + ) = self.encode_prompt( + prompt=prompt, + prompt_2=prompt_2, + device=device, + num_images_per_prompt=num_images_per_prompt, + do_classifier_free_guidance=do_classifier_free_guidance, + negative_prompt=negative_prompt, + negative_prompt_2=negative_prompt_2, + prompt_embeds=prompt_embeds, + negative_prompt_embeds=negative_prompt_embeds, + pooled_prompt_embeds=pooled_prompt_embeds, + negative_pooled_prompt_embeds=negative_pooled_prompt_embeds, + lora_scale=text_encoder_lora_scale, + ) + + # 4. Prepare timesteps + self.scheduler.set_timesteps(num_inference_steps, device=device) + + timesteps = self.scheduler.timesteps + + # 5. Prepare latent variables + num_channels_latents = self.unet.config.in_channels + latents = self.prepare_latents( + batch_size * num_images_per_prompt, + num_channels_latents, + height, + width, + prompt_embeds.dtype, + device, + generator, + latents, + ) + + # 6. Prepare extra step kwargs. TODO: Logic should ideally just be moved out of the pipeline + extra_step_kwargs = self.prepare_extra_step_kwargs(generator, eta) + + # 7. Prepare added time ids & embeddings + add_text_embeds = pooled_prompt_embeds + if self.text_encoder_2 is None: + text_encoder_projection_dim = int(pooled_prompt_embeds.shape[-1]) + else: + text_encoder_projection_dim = self.text_encoder_2.config.projection_dim + + get_add_time_ids_args = {"original_size": original_size, + "crops_coords_top_left": crops_coords_top_left, + "target_size": target_size, + "dtype": prompt_embeds.dtype, } + + if "text_encoder_projection_dim" in list(inspect.getfullargspec(self._get_add_time_ids))[0]: + get_add_time_ids_args["text_encoder_projection_dim"] = text_encoder_projection_dim + + add_time_ids = self._get_add_time_ids( + **get_add_time_ids_args + ) + + if negative_original_size is not None and negative_target_size is not None: + negative_get_add_time_ids_args = {"original_size": negative_original_size, + "crops_coords_top_left": negative_crops_coords_top_left, + "target_size": negative_target_size, + "dtype": prompt_embeds.dtype, } + if "text_encoder_projection_dim" in list(inspect.getfullargspec(self._get_add_time_ids))[0]: + negative_get_add_time_ids_args["text_encoder_projection_dim"] = text_encoder_projection_dim + negative_add_time_ids = self._get_add_time_ids( + **negative_get_add_time_ids_args + ) + else: + negative_add_time_ids = add_time_ids + + if do_classifier_free_guidance: + prompt_embeds = torch.cat([negative_prompt_embeds, prompt_embeds], dim=0) + add_text_embeds = torch.cat([negative_pooled_prompt_embeds, add_text_embeds], dim=0) + add_time_ids = torch.cat([negative_add_time_ids, add_time_ids], dim=0) + + prompt_embeds = prompt_embeds.to(device) + add_text_embeds = add_text_embeds.to(device) + add_time_ids = add_time_ids.to(device).repeat(batch_size * num_images_per_prompt, 1) + + # 8. Denoising loop + num_warmup_steps = max(len(timesteps) - num_inference_steps * self.scheduler.order, 0) + + # 7.1 Apply denoising_end + if denoising_end is not None and isinstance(denoising_end, float) and denoising_end > 0 and denoising_end < 1: + discrete_timestep_cutoff = int( + round( + self.scheduler.config.num_train_timesteps + - (denoising_end * self.scheduler.config.num_train_timesteps) + ) + ) + num_inference_steps = len(list(filter(lambda ts: ts >= discrete_timestep_cutoff, timesteps))) + timesteps = timesteps[:num_inference_steps] + + # get init conditioning scale + for attn_processor in self.unet.attn_processors.values(): + if isinstance(attn_processor, IPAttnProcessor): + conditioning_scale = attn_processor.scale + break + + with self.progress_bar(total=num_inference_steps) as progress_bar: + for i, t in enumerate(timesteps): + + if (i / len(timesteps) < control_guidance_start) or ((i + 1) / len(timesteps) > control_guidance_end): + self.set_scale(0.) + else: + self.set_scale(conditioning_scale) + + # expand the latents if we are doing classifier free guidance + latent_model_input = torch.cat([latents] * 2) if do_classifier_free_guidance else latents + + latent_model_input = self.scheduler.scale_model_input(latent_model_input, t) + + # predict the noise residual + added_cond_kwargs = {"text_embeds": add_text_embeds, "time_ids": add_time_ids} + noise_pred = self.unet( + latent_model_input, + t, + encoder_hidden_states=prompt_embeds, + cross_attention_kwargs=cross_attention_kwargs, + added_cond_kwargs=added_cond_kwargs, + return_dict=False, + )[0] + + # perform guidance + if do_classifier_free_guidance: + noise_pred_uncond, noise_pred_text = noise_pred.chunk(2) + noise_pred = noise_pred_uncond + guidance_scale * (noise_pred_text - noise_pred_uncond) + + if do_classifier_free_guidance and guidance_rescale > 0.0: + # Based on 3.4. in https://arxiv.org/pdf/2305.08891.pdf + noise_pred = rescale_noise_cfg(noise_pred, noise_pred_text, guidance_rescale=guidance_rescale) + + # compute the previous noisy sample x_t -> x_t-1 + latents = self.scheduler.step(noise_pred, t, latents, **extra_step_kwargs, return_dict=False)[0] + + # call the callback, if provided + if i == len(timesteps) - 1 or ((i + 1) > num_warmup_steps and (i + 1) % self.scheduler.order == 0): + progress_bar.update() + if callback is not None and i % callback_steps == 0: + callback(i, t, latents) + + if not output_type == "latent": + # make sure the VAE is in float32 mode, as it overflows in float16 + needs_upcasting = self.vae.dtype == torch.float16 and self.vae.config.force_upcast + + if needs_upcasting: + self.upcast_vae() + latents = latents.to(next(iter(self.vae.post_quant_conv.parameters())).dtype) + + image = self.vae.decode(latents / self.vae.config.scaling_factor, return_dict=False)[0] + + # cast back to fp16 if needed + if needs_upcasting: + self.vae.to(dtype=torch.float16) + else: + image = latents + + if not output_type == "latent": + # apply watermark if available + if self.watermark is not None: + image = self.watermark.apply_watermark(image) + + image = self.image_processor.postprocess(image, output_type=output_type) + + # Offload all models + self.maybe_free_model_hooks() + + if not return_dict: + return (image,) + + return StableDiffusionXLPipelineOutput(images=image) \ No newline at end of file diff --git a/IPA/ip_adapter/ip_adapter.py b/IPA/ip_adapter/ip_adapter.py new file mode 100644 index 0000000..99d8956 --- /dev/null +++ b/IPA/ip_adapter/ip_adapter.py @@ -0,0 +1,367 @@ +import os +from typing import List + +import torch +from diffusers import StableDiffusionPipeline +from diffusers.pipelines.controlnet import MultiControlNetModel +from transformers import CLIPVisionModelWithProjection, CLIPImageProcessor +from PIL import Image +from safetensors import safe_open +from ...LCM.lcm_pipeline_2 import LatentConsistencyModelPipeline_ipadapter + +from .utils import is_torch2_available +if is_torch2_available(): + from .attention_processor import IPAttnProcessor2_0 as IPAttnProcessor, AttnProcessor2_0 as AttnProcessor, CNAttnProcessor2_0 as CNAttnProcessor +else: + from .attention_processor import IPAttnProcessor, AttnProcessor, CNAttnProcessor +from .resampler import Resampler + +def set_max_split_size_mb(model, max_split_size_mb): + """ + Set the max_split_size_mb parameter in PyTorch to avoid fragmentation. + + Args: + model (torch.nn.Module): The PyTorch model. + max_split_size_mb (int): The desired value for max_split_size_mb in megabytes. + """ + for param in model.parameters(): + param.requires_grad = False # Disable gradient calculation to prevent unnecessary memory allocations + + # Dummy forward pass to initialize the memory allocator + dummy_input = torch.randn(1, 1) + model(dummy_input) + + # Get the current memory allocator state + allocator = torch.cuda.memory._get_memory_allocator() + + # Update max_split_size_mb in the memory allocator + allocator.set_max_split_size(max_split_size_mb * 1024 * 1024) +class ImageProjModel(torch.nn.Module): + """Projection Model""" + def __init__(self, cross_attention_dim=1024, clip_embeddings_dim=1024, clip_extra_context_tokens=4): + super().__init__() + + self.cross_attention_dim = cross_attention_dim + self.clip_extra_context_tokens = clip_extra_context_tokens + self.proj = torch.nn.Linear(clip_embeddings_dim, self.clip_extra_context_tokens * cross_attention_dim) + self.norm = torch.nn.LayerNorm(cross_attention_dim) + + def forward(self, image_embeds): + embeds = image_embeds + clip_extra_context_tokens = self.proj(embeds).reshape(-1, self.clip_extra_context_tokens, self.cross_attention_dim) + clip_extra_context_tokens = self.norm(clip_extra_context_tokens) + return clip_extra_context_tokens + + +class IPAdapter: + + def __init__(self, sd_pipe, image_encoder_path, ip_ckpt, device, num_tokens=4): + + self.device = device + self.image_encoder_path = image_encoder_path + self.ip_ckpt = ip_ckpt + self.num_tokens = num_tokens + self.pipe = sd_pipe + self.pipe.to(device) + + self.set_ip_adapter() + + # load image encoder + self.image_encoder = CLIPVisionModelWithProjection.from_pretrained(self.image_encoder_path).to(self.device, dtype=torch.float32) + self.clip_image_processor = CLIPImageProcessor() + # image proj model + self.image_proj_model = self.init_proj() + + self.load_ip_adapter() + + def init_proj(self): + image_proj_model = ImageProjModel( + cross_attention_dim=self.pipe.unet.config.cross_attention_dim, + clip_embeddings_dim=self.image_encoder.config.projection_dim, + clip_extra_context_tokens=self.num_tokens, + ).to(self.device, dtype=torch.float32) + return image_proj_model + + def set_ip_adapter(self): + unet = self.pipe.unet + attn_procs = {} + for name in unet.attn_processors.keys(): + cross_attention_dim = None if name.endswith("attn1.processor") else unet.config.cross_attention_dim + if name.startswith("mid_block"): + hidden_size = unet.config.block_out_channels[-1] + elif name.startswith("up_blocks"): + block_id = int(name[len("up_blocks.")]) + hidden_size = list(reversed(unet.config.block_out_channels))[block_id] + elif name.startswith("down_blocks"): + block_id = int(name[len("down_blocks.")]) + hidden_size = unet.config.block_out_channels[block_id] + if cross_attention_dim is None: + attn_procs[name] = AttnProcessor() + else: + attn_procs[name] = IPAttnProcessor(hidden_size=hidden_size, cross_attention_dim=cross_attention_dim, + scale=1.0,num_tokens= self.num_tokens).to(self.device, dtype=torch.float32) + unet.set_attn_processor(attn_procs) + if hasattr(self.pipe, "controlnet"): + if isinstance(self.pipe.controlnet, MultiControlNetModel): + for controlnet in self.pipe.controlnet.nets: + controlnet.set_attn_processor(CNAttnProcessor(num_tokens=self.num_tokens)) + else: + self.pipe.controlnet.set_attn_processor(CNAttnProcessor(num_tokens=self.num_tokens)) + + def load_ip_adapter(self): + if os.path.splitext(self.ip_ckpt)[-1] == ".safetensors": + state_dict = {"image_proj": {}, "ip_adapter": {}} + with safe_open(self.ip_ckpt, framework="pt", device="cpu") as f: + for key in f.keys(): + if key.startswith("image_proj."): + state_dict["image_proj"][key.replace("image_proj.", "")] = f.get_tensor(key) + elif key.startswith("ip_adapter."): + state_dict["ip_adapter"][key.replace("ip_adapter.", "")] = f.get_tensor(key) + else: + state_dict = torch.load(self.ip_ckpt, map_location="cpu") + self.image_proj_model.load_state_dict(state_dict["image_proj"]) + ip_layers = torch.nn.ModuleList(self.pipe.unet.attn_processors.values()) + ip_layers.load_state_dict(state_dict["ip_adapter"]) + + @torch.inference_mode() + def get_image_embeds(self, pil_image): + if isinstance(pil_image, Image.Image): + pil_image = [pil_image] + clip_image = self.clip_image_processor(images=pil_image, return_tensors="pt").pixel_values + clip_image_embeds = self.image_encoder(clip_image.to(self.device, dtype=torch.float32)).image_embeds + image_prompt_embeds = self.image_proj_model(clip_image_embeds) + uncond_image_prompt_embeds = self.image_proj_model(torch.zeros_like(clip_image_embeds)) + return image_prompt_embeds, uncond_image_prompt_embeds + + def set_scale(self, scale): + for attn_processor in self.pipe.unet.attn_processors.values(): + if isinstance(attn_processor, IPAttnProcessor): + attn_processor.scale = scale + + def generate( + self, + pil_image, + prompt=None, + negative_prompt=None, + scale=1.0, + num_samples=4, + seed=None, + guidance_scale=7.5, + num_inference_steps=30, + control_image = None, + + **kwargs, + ): + self.set_scale(scale) + + if isinstance(pil_image, Image.Image): + num_prompts = 1 + else: + num_prompts = len(pil_image) + + if prompt is None: + prompt = "best quality, high quality" + if negative_prompt is None: + negative_prompt = "monochrome, lowres, bad anatomy, worst quality, low quality" + + if not isinstance(prompt, List): + prompt = [prompt] * num_prompts + if not isinstance(negative_prompt, List): + negative_prompt = [negative_prompt] * num_prompts + + image_prompt_embeds, uncond_image_prompt_embeds = self.get_image_embeds(pil_image) + bs_embed, seq_len, _ = image_prompt_embeds.shape + image_prompt_embeds = image_prompt_embeds.repeat(1, num_samples, 1) + image_prompt_embeds = image_prompt_embeds.view(bs_embed * num_samples, seq_len, -1) + uncond_image_prompt_embeds = uncond_image_prompt_embeds.repeat(1, num_samples, 1) + uncond_image_prompt_embeds = uncond_image_prompt_embeds.view(bs_embed * num_samples, seq_len, -1) + + with torch.inference_mode(): + prompt_embeds = self.pipe._encode_prompt( + prompt, device=self.device, num_images_per_prompt=num_samples, do_classifier_free_guidance=False) + prompt_embeds_ = prompt_embeds + prompt_embeds = torch.cat([prompt_embeds_, image_prompt_embeds], dim=1) + #negative_prompt_embeds = torch.cat([negative_prompt_embeds_, uncond_image_prompt_embeds], dim=1) + + generator = torch.Generator(self.device).manual_seed(seed) if seed is not None else None + images = self.pipe( + prompt_embeds=prompt_embeds, + #negative_prompt_embeds=negative_prompt_embeds, + guidance_scale=guidance_scale, + num_inference_steps=num_inference_steps, + generator=generator, + control_image=control_image, + **kwargs, + ).images + + return images + + +class IPAdapterXL(IPAdapter): + """SDXL""" + + def generate( + self, + pil_image, + prompt=None, + negative_prompt=None, + scale=1.0, + num_samples=4, + seed=None, + num_inference_steps=30, + **kwargs, + ): + self.set_scale(scale) + + if isinstance(pil_image, Image.Image): + num_prompts = 1 + else: + num_prompts = len(pil_image) + + if prompt is None: + prompt = "best quality, high quality" + if negative_prompt is None: + negative_prompt = "monochrome, lowres, bad anatomy, worst quality, low quality" + + if not isinstance(prompt, List): + prompt = [prompt] * num_prompts + if not isinstance(negative_prompt, List): + negative_prompt = [negative_prompt] * num_prompts + + image_prompt_embeds, uncond_image_prompt_embeds = self.get_image_embeds(pil_image) + bs_embed, seq_len, _ = image_prompt_embeds.shape + image_prompt_embeds = image_prompt_embeds.repeat(1, num_samples, 1) + image_prompt_embeds = image_prompt_embeds.view(bs_embed * num_samples, seq_len, -1) + uncond_image_prompt_embeds = uncond_image_prompt_embeds.repeat(1, num_samples, 1) + uncond_image_prompt_embeds = uncond_image_prompt_embeds.view(bs_embed * num_samples, seq_len, -1) + + with torch.inference_mode(): + prompt_embeds, negative_prompt_embeds, pooled_prompt_embeds, negative_pooled_prompt_embeds = self.pipe.encode_prompt( + prompt, num_images_per_prompt=num_samples, do_classifier_free_guidance=True, negative_prompt=negative_prompt) + prompt_embeds = torch.cat([prompt_embeds, image_prompt_embeds], dim=1) + negative_prompt_embeds = torch.cat([negative_prompt_embeds, uncond_image_prompt_embeds], dim=1) + + generator = torch.Generator(self.device).manual_seed(seed) if seed is not None else None + images = self.pipe( + prompt_embeds=prompt_embeds, + negative_prompt_embeds=negative_prompt_embeds, + pooled_prompt_embeds=pooled_prompt_embeds, + negative_pooled_prompt_embeds=negative_pooled_prompt_embeds, + num_inference_steps=num_inference_steps, + generator=generator, + **kwargs, + ).images + + return images + + +class IPAdapterPlus(IPAdapter): + """IP-Adapter with fine-grained features""" + + def init_proj(self): + image_proj_model = Resampler( + dim=self.pipe.unet.config.cross_attention_dim, + depth=4, + dim_head=64, + heads=12, + num_queries=self.num_tokens, + embedding_dim=self.image_encoder.config.hidden_size, + output_dim=self.pipe.unet.config.cross_attention_dim, + ff_mult=4 + ).to(self.device, dtype=torch.float32) + return image_proj_model + + @torch.inference_mode() + def get_image_embeds(self, pil_image): + if isinstance(pil_image, Image.Image): + pil_image = [pil_image] + clip_image = self.clip_image_processor(images=pil_image, return_tensors="pt").pixel_values + clip_image = clip_image.to(self.device, dtype=torch.float32) + clip_image_embeds = self.image_encoder(clip_image, output_hidden_states=True).hidden_states[-2] + image_prompt_embeds = self.image_proj_model(clip_image_embeds) + uncond_clip_image_embeds = self.image_encoder(torch.zeros_like(clip_image), output_hidden_states=True).hidden_states[-2] + uncond_image_prompt_embeds = self.image_proj_model(uncond_clip_image_embeds) + return image_prompt_embeds, uncond_image_prompt_embeds + + +class IPAdapterPlusXL(IPAdapter): + """SDXL""" + + def init_proj(self): + image_proj_model = Resampler( + dim=1280, + depth=4, + dim_head=64, + heads=20, + num_queries=self.num_tokens, + embedding_dim=self.image_encoder.config.hidden_size, + output_dim=self.pipe.unet.config.cross_attention_dim, + ff_mult=4 + ).to(self.device, dtype=torch.float32) + return image_proj_model + + @torch.inference_mode() + def get_image_embeds(self, pil_image): + if isinstance(pil_image, Image.Image): + pil_image = [pil_image] + clip_image = self.clip_image_processor(images=pil_image, return_tensors="pt").pixel_values + clip_image = clip_image.to(self.device, dtype=torch.float32) + clip_image_embeds = self.image_encoder(clip_image, output_hidden_states=True).hidden_states[-2] + image_prompt_embeds = self.image_proj_model(clip_image_embeds) + uncond_clip_image_embeds = self.image_encoder(torch.zeros_like(clip_image), output_hidden_states=True).hidden_states[-2] + uncond_image_prompt_embeds = self.image_proj_model(uncond_clip_image_embeds) + return image_prompt_embeds, uncond_image_prompt_embeds + + def generate( + self, + pil_image, + prompt=None, + negative_prompt=None, + scale=1.0, + num_samples=4, + seed=None, + num_inference_steps=30, + **kwargs, + ): + self.set_scale(scale) + + if isinstance(pil_image, Image.Image): + num_prompts = 1 + else: + num_prompts = len(pil_image) + + if prompt is None: + prompt = "best quality, high quality" + if negative_prompt is None: + negative_prompt = "monochrome, lowres, bad anatomy, worst quality, low quality" + + if not isinstance(prompt, List): + prompt = [prompt] * num_prompts + if not isinstance(negative_prompt, List): + negative_prompt = [negative_prompt] * num_prompts + + image_prompt_embeds, uncond_image_prompt_embeds = self.get_image_embeds(pil_image) + bs_embed, seq_len, _ = image_prompt_embeds.shape + image_prompt_embeds = image_prompt_embeds.repeat(1, num_samples, 1) + image_prompt_embeds = image_prompt_embeds.view(bs_embed * num_samples, seq_len, -1) + uncond_image_prompt_embeds = uncond_image_prompt_embeds.repeat(1, num_samples, 1) + uncond_image_prompt_embeds = uncond_image_prompt_embeds.view(bs_embed * num_samples, seq_len, -1) + + with torch.inference_mode(): + prompt_embeds, negative_prompt_embeds, pooled_prompt_embeds, negative_pooled_prompt_embeds = self.pipe.encode_prompt( + prompt, num_images_per_prompt=num_samples, do_classifier_free_guidance=True, negative_prompt=negative_prompt) + prompt_embeds = torch.cat([prompt_embeds, image_prompt_embeds], dim=1) + negative_prompt_embeds = torch.cat([negative_prompt_embeds, uncond_image_prompt_embeds], dim=1) + + generator = torch.Generator(self.device).manual_seed(seed) if seed is not None else None + images = self.pipe( + prompt_embeds=prompt_embeds, + negative_prompt_embeds=negative_prompt_embeds, + pooled_prompt_embeds=pooled_prompt_embeds, + negative_pooled_prompt_embeds=negative_pooled_prompt_embeds, + num_inference_steps=num_inference_steps, + generator=generator, + **kwargs, + ).images + + return images diff --git a/IPA/ip_adapter/resampler.py b/IPA/ip_adapter/resampler.py new file mode 100644 index 0000000..4521c8c --- /dev/null +++ b/IPA/ip_adapter/resampler.py @@ -0,0 +1,121 @@ +# modified from https://github.com/mlfoundations/open_flamingo/blob/main/open_flamingo/src/helpers.py +import math + +import torch +import torch.nn as nn + + +# FFN +def FeedForward(dim, mult=4): + inner_dim = int(dim * mult) + return nn.Sequential( + nn.LayerNorm(dim), + nn.Linear(dim, inner_dim, bias=False), + nn.GELU(), + nn.Linear(inner_dim, dim, bias=False), + ) + + +def reshape_tensor(x, heads): + bs, length, width = x.shape + #(bs, length, width) --> (bs, length, n_heads, dim_per_head) + x = x.view(bs, length, heads, -1) + # (bs, length, n_heads, dim_per_head) --> (bs, n_heads, length, dim_per_head) + x = x.transpose(1, 2) + # (bs, n_heads, length, dim_per_head) --> (bs*n_heads, length, dim_per_head) + x = x.reshape(bs, heads, length, -1) + return x + + +class PerceiverAttention(nn.Module): + def __init__(self, *, dim, dim_head=64, heads=8): + super().__init__() + self.scale = dim_head**-0.5 + self.dim_head = dim_head + self.heads = heads + inner_dim = dim_head * heads + + self.norm1 = nn.LayerNorm(dim) + self.norm2 = nn.LayerNorm(dim) + + self.to_q = nn.Linear(dim, inner_dim, bias=False) + self.to_kv = nn.Linear(dim, inner_dim * 2, bias=False) + self.to_out = nn.Linear(inner_dim, dim, bias=False) + + + def forward(self, x, latents): + """ + Args: + x (torch.Tensor): image features + shape (b, n1, D) + latent (torch.Tensor): latent features + shape (b, n2, D) + """ + x = self.norm1(x) + latents = self.norm2(latents) + + b, l, _ = latents.shape + + q = self.to_q(latents) + kv_input = torch.cat((x, latents), dim=-2) + k, v = self.to_kv(kv_input).chunk(2, dim=-1) + + q = reshape_tensor(q, self.heads) + k = reshape_tensor(k, self.heads) + v = reshape_tensor(v, self.heads) + + # attention + scale = 1 / math.sqrt(math.sqrt(self.dim_head)) + weight = (q * scale) @ (k * scale).transpose(-2, -1) # More stable with f16 than dividing afterwards + weight = torch.softmax(weight.float(), dim=-1).type(weight.dtype) + out = weight @ v + + out = out.permute(0, 2, 1, 3).reshape(b, l, -1) + + return self.to_out(out) + + +class Resampler(nn.Module): + def __init__( + self, + dim=1024, + depth=8, + dim_head=64, + heads=16, + num_queries=8, + embedding_dim=768, + output_dim=1024, + ff_mult=4, + ): + super().__init__() + + self.latents = nn.Parameter(torch.randn(1, num_queries, dim) / dim**0.5) + + self.proj_in = nn.Linear(embedding_dim, dim) + + self.proj_out = nn.Linear(dim, output_dim) + self.norm_out = nn.LayerNorm(output_dim) + + self.layers = nn.ModuleList([]) + for _ in range(depth): + self.layers.append( + nn.ModuleList( + [ + PerceiverAttention(dim=dim, dim_head=dim_head, heads=heads), + FeedForward(dim=dim, mult=ff_mult), + ] + ) + ) + + def forward(self, x): + + latents = self.latents.repeat(x.size(0), 1, 1) + + x = self.proj_in(x) + + for attn, ff in self.layers: + latents = attn(x, latents) + latents + latents = ff(latents) + latents + + latents = self.proj_out(latents) + return self.norm_out(latents) \ No newline at end of file diff --git a/IPA/ip_adapter/utils.py b/IPA/ip_adapter/utils.py new file mode 100644 index 0000000..9a105f3 --- /dev/null +++ b/IPA/ip_adapter/utils.py @@ -0,0 +1,5 @@ +import torch.nn.functional as F + + +def is_torch2_available(): + return hasattr(F, "scaled_dot_product_attention")