InvokeAI/invokeai/app/invocations/onnx.py

# Copyright (c) 2023 Borisov Sergey (https://github.com/StAlKeR7779)

from contextlib import ExitStack
from typing import List, Literal, Optional, Union

import re
import inspect

from pydantic import BaseModel, Field, validator
import torch
import numpy as np
from diffusers import ControlNetModel, DPMSolverMultistepScheduler
from diffusers.image_processor import VaeImageProcessor
from diffusers.schedulers import SchedulerMixin as Scheduler

from ..models.image import ImageCategory, ImageField, ResourceOrigin
from ...backend.model_management import ONNXModelPatcher
from ...backend.util import choose_torch_device
from .baseinvocation import (BaseInvocation, BaseInvocationOutput,
                             InvocationConfig, InvocationContext)
from .compel import ConditioningField
from .controlnet_image_processors import ControlField
from .image import ImageOutput
from .model import ModelInfo, UNetField, VaeField

from invokeai.app.invocations.metadata import CoreMetadata
from invokeai.backend import BaseModelType, ModelType, SubModelType
from invokeai.app.util.step_callback import stable_diffusion_step_callback
from ...backend.stable_diffusion import PipelineIntermediateState

from tqdm import tqdm
from .model import ClipField
from .latent import LatentsField, LatentsOutput, build_latents_output, get_scheduler, SAMPLER_NAME_VALUES
from .compel import CompelOutput


ORT_TO_NP_TYPE = {
    "tensor(bool)": np.bool_,
    "tensor(int8)": np.int8,
    "tensor(uint8)": np.uint8,
    "tensor(int16)": np.int16,
    "tensor(uint16)": np.uint16,
    "tensor(int32)": np.int32,
    "tensor(uint32)": np.uint32,
    "tensor(int64)": np.int64,
    "tensor(uint64)": np.uint64,
    "tensor(float16)": np.float16,
    "tensor(float)": np.float32,
    "tensor(double)": np.float64,
}

PRECISION_VALUES = Literal[
    tuple(list(ORT_TO_NP_TYPE.keys()))
]

class ONNXPromptInvocation(BaseInvocation):
    type: Literal["prompt_onnx"] = "prompt_onnx"

    prompt: str = Field(default="", description="Prompt")
    clip: ClipField = Field(None, description="Clip to use")

    def invoke(self, context: InvocationContext) -> CompelOutput:
        tokenizer_info = context.services.model_manager.get_model(
            **self.clip.tokenizer.dict(),
        )
        text_encoder_info = context.services.model_manager.get_model(
            **self.clip.text_encoder.dict(),
        )
        with tokenizer_info as orig_tokenizer,\
             text_encoder_info as text_encoder,\
             ExitStack() as stack:

            #loras = [(stack.enter_context(context.services.model_manager.get_model(**lora.dict(exclude={"weight"}))), lora.weight) for lora in self.clip.loras]
            loras = [(context.services.model_manager.get_model(**lora.dict(exclude={"weight"})).context.model, lora.weight) for lora in self.clip.loras]

            ti_list = []
            for trigger in re.findall(r"<[a-zA-Z0-9., _-]+>", self.prompt):
                name = trigger[1:-1]
                try:
                    ti_list.append(
                        #stack.enter_context(
                        #    context.services.model_manager.get_model(
                        #        model_name=name,
                        #        base_model=self.clip.text_encoder.base_model,
                        #        model_type=ModelType.TextualInversion,
                        #    )
                        #)
                        context.services.model_manager.get_model(
                            model_name=name,
                            base_model=self.clip.text_encoder.base_model,
                            model_type=ModelType.TextualInversion,
                        ).context.model
                    )
                except Exception:
                    #print(e)
                    #import traceback
                    #print(traceback.format_exc())
                    print(f"Warn: trigger: \"{trigger}\" not found")

            with ONNXModelPatcher.apply_lora_text_encoder(text_encoder, loras),\
                 ONNXModelPatcher.apply_ti(orig_tokenizer, text_encoder, ti_list) as (tokenizer, ti_manager):

                text_encoder.create_session()

                # copy from
                # https://github.com/huggingface/diffusers/blob/3ebbaf7c96801271f9e6c21400033b6aa5ffcf29/src/diffusers/pipelines/stable_diffusion/pipeline_onnx_stable_diffusion.py#L153
                text_inputs = tokenizer(
                    self.prompt,
                    padding="max_length",
                    max_length=tokenizer.model_max_length,
                    truncation=True,
                    return_tensors="np",
                )
                text_input_ids = text_inputs.input_ids
                """
                untruncated_ids = tokenizer(prompt, padding="max_length", return_tensors="np").input_ids

                if not np.array_equal(text_input_ids, untruncated_ids):
                    removed_text = self.tokenizer.batch_decode(
                        untruncated_ids[:, self.tokenizer.model_max_length - 1 : -1]
                    )
                    logger.warning(
                        "The following part of your input was truncated because CLIP can only handle sequences up to"
                        f" {self.tokenizer.model_max_length} tokens: {removed_text}"
                    )
                """

                prompt_embeds = text_encoder(input_ids=text_input_ids.astype(np.int32))[0]

                text_encoder.release_session()

        conditioning_name = f"{context.graph_execution_state_id}_{self.id}_conditioning"

        # TODO: hacky but works ;D maybe rename latents somehow?
        context.services.latents.save(conditioning_name, (prompt_embeds, None))

        return CompelOutput(
            conditioning=ConditioningField(
                conditioning_name=conditioning_name,
            ),
        )

# Text to image
class ONNXTextToLatentsInvocation(BaseInvocation):
    """Generates latents from conditionings."""

    type: Literal["t2l_onnx"] = "t2l_onnx"

    # Inputs
    # fmt: off
    positive_conditioning: Optional[ConditioningField] = Field(description="Positive conditioning for generation")
    negative_conditioning: Optional[ConditioningField] = Field(description="Negative conditioning for generation")
    noise: Optional[LatentsField] = Field(description="The noise to use")
    steps:       int = Field(default=10, gt=0, description="The number of steps to use to generate the image")
    cfg_scale: Union[float, List[float]] = Field(default=7.5, ge=1, description="The Classifier-Free Guidance, higher values may result in a result closer to the prompt", )
    scheduler: SAMPLER_NAME_VALUES = Field(default="euler", description="The scheduler to use" )
    precision: PRECISION_VALUES = Field(default = "tensor(float16)", description="The precision to use when generating latents")
    unet: UNetField = Field(default=None, description="UNet submodel")
    #control: Union[ControlField, list[ControlField]] = Field(default=None, description="The control to use")
    #seamless:   bool = Field(default=False, description="Whether or not to generate an image that can tile without seams", )
    #seamless_axes: str = Field(default="", description="The axes to tile the image on, 'x' and/or 'y'")
    # fmt: on

    @validator("cfg_scale")
    def ge_one(cls, v):
        """validate that all cfg_scale values are >= 1"""
        if isinstance(v, list):
            for i in v:
                if i < 1:
                    raise ValueError('cfg_scale must be greater than 1')
        else:
            if v < 1:
                raise ValueError('cfg_scale must be greater than 1')
        return v

    # Schema customisation
    class Config(InvocationConfig):
        schema_extra = {
            "ui": {
                "tags": ["latents"],
                "type_hints": {
                  "model": "model",
                  # "cfg_scale": "float",
                  "cfg_scale": "number"
                }
            },
        }

    # based on
    # https://github.com/huggingface/diffusers/blob/3ebbaf7c96801271f9e6c21400033b6aa5ffcf29/src/diffusers/pipelines/stable_diffusion/pipeline_onnx_stable_diffusion.py#L375
    def invoke(self, context: InvocationContext) -> LatentsOutput:
        c, _ = context.services.latents.get(self.positive_conditioning.conditioning_name)
        uc, _ = context.services.latents.get(self.negative_conditioning.conditioning_name)
        graph_execution_state = context.services.graph_execution_manager.get(
            context.graph_execution_state_id)
        source_node_id = graph_execution_state.prepared_source_mapping[self.id]
        if isinstance(c, torch.Tensor):
            c = c.cpu().numpy()
        if isinstance(uc, torch.Tensor):
            uc = uc.cpu().numpy()
        device = torch.device(choose_torch_device())
        prompt_embeds = np.concatenate([uc, c])

        latents = context.services.latents.get(self.noise.latents_name)
        if isinstance(latents, torch.Tensor):
            latents = latents.cpu().numpy()

        # TODO: better execution device handling
        latents = latents.astype(ORT_TO_NP_TYPE[self.precision])

        # get the initial random noise unless the user supplied it
        do_classifier_free_guidance = True
        #latents_dtype = prompt_embeds.dtype
        #latents_shape = (batch_size * num_images_per_prompt, 4, height // 8, width // 8)
        #if latents.shape != latents_shape:
        #    raise ValueError(f"Unexpected latents shape, got {latents.shape}, expected {latents_shape}")

        scheduler = get_scheduler(
            context=context,
            scheduler_info=self.unet.scheduler,
            scheduler_name=self.scheduler,
        )

        def torch2numpy(latent: torch.Tensor):
            return latent.cpu().numpy()

        def numpy2torch(latent, device):
            return torch.from_numpy(latent).to(device)

        def dispatch_progress(
                self, context: InvocationContext, source_node_id: str,
                intermediate_state: PipelineIntermediateState) -> None:
            stable_diffusion_step_callback(
                context=context,
                intermediate_state=intermediate_state,
                node=self.dict(),
                source_node_id=source_node_id,
            )

        scheduler.set_timesteps(self.steps)
        latents = latents * np.float64(scheduler.init_noise_sigma)

        extra_step_kwargs = dict()
        if "eta" in set(inspect.signature(scheduler.step).parameters.keys()):
            extra_step_kwargs.update(
                eta=0.0,
            )

        unet_info = context.services.model_manager.get_model(**self.unet.unet.dict())

        with unet_info as unet,\
             ExitStack() as stack:

            #loras = [(stack.enter_context(context.services.model_manager.get_model(**lora.dict(exclude={"weight"}))), lora.weight) for lora in self.unet.loras]
            loras = [(context.services.model_manager.get_model(**lora.dict(exclude={"weight"})).context.model, lora.weight) for lora in self.unet.loras]

            with ONNXModelPatcher.apply_lora_unet(unet, loras):
                # TODO: 
                unet.create_session()

                timestep_dtype = next(
                    (input.type for input in unet.session.get_inputs() if input.name == "timestep"), "tensor(float16)"
                )
                timestep_dtype = ORT_TO_NP_TYPE[timestep_dtype]
                import time
                times = []
                for i in tqdm(range(len(scheduler.timesteps))):
                    t = scheduler.timesteps[i]
                    # expand the latents if we are doing classifier free guidance
                    latent_model_input = np.concatenate([latents] * 2) if do_classifier_free_guidance else latents
                    latent_model_input = scheduler.scale_model_input(numpy2torch(latent_model_input, device), t)
                    latent_model_input = latent_model_input.cpu().numpy()

                    # predict the noise residual
                    timestep = np.array([t], dtype=timestep_dtype)
                    start_time = time.time()
                    noise_pred = unet(sample=latent_model_input, timestep=timestep, encoder_hidden_states=prompt_embeds)
                    times.append(time.time() - start_time)
                    noise_pred = noise_pred[0]

                    # perform guidance
                    if do_classifier_free_guidance:
                        noise_pred_uncond, noise_pred_text = np.split(noise_pred, 2)
                        noise_pred = noise_pred_uncond + self.cfg_scale * (noise_pred_text - noise_pred_uncond)

                    # compute the previous noisy sample x_t -> x_t-1
                    scheduler_output = scheduler.step(
                        numpy2torch(noise_pred, device), t, numpy2torch(latents, device), **extra_step_kwargs
                    )
                    latents = torch2numpy(scheduler_output.prev_sample)

                    state = PipelineIntermediateState(
                        run_id= "test",
                        step=i,
                        timestep=timestep,
                        latents=scheduler_output.prev_sample
                    )
                    dispatch_progress(
                        self,
                        context=context,
                        source_node_id=source_node_id,
                        intermediate_state=state
                    )

                    # call the callback, if provided
                    #if callback is not None and i % callback_steps == 0:
                    #    callback(i, t, latents)
                print(times)
                unet.release_session()

        torch.cuda.empty_cache()

        name = f'{context.graph_execution_state_id}__{self.id}'
        context.services.latents.save(name, latents)
        return build_latents_output(latents_name=name, latents=torch.from_numpy(latents))

# Latent to image
class ONNXLatentsToImageInvocation(BaseInvocation):
    """Generates an image from latents."""

    type: Literal["l2i_onnx"] = "l2i_onnx"

    # Inputs
    latents: Optional[LatentsField] = Field(description="The latents to generate an image from")
    vae: VaeField = Field(default=None, description="Vae submodel")
    metadata: Optional[CoreMetadata] = Field(default=None, description="Optional core metadata to be written to the image")
    #tiled: bool = Field(default=False, description="Decode latents by overlaping tiles(less memory consumption)")

    # Schema customisation
    class Config(InvocationConfig):
        schema_extra = {
            "ui": {
                "tags": ["latents", "image"],
            },
        }

    def invoke(self, context: InvocationContext) -> ImageOutput:
        latents = context.services.latents.get(self.latents.latents_name)

        if self.vae.vae.submodel != SubModelType.VaeDecoder:
            raise Exception(f"Expected vae_decoder, found: {self.vae.vae.model_type}")

        vae_info = context.services.model_manager.get_model(
            **self.vae.vae.dict(),
        )

        # clear memory as vae decode can request a lot
        torch.cuda.empty_cache()

        with vae_info as vae:
            vae.create_session()

            # copied from
            # https://github.com/huggingface/diffusers/blob/3ebbaf7c96801271f9e6c21400033b6aa5ffcf29/src/diffusers/pipelines/stable_diffusion/pipeline_onnx_stable_diffusion.py#L427
            latents = 1 / 0.18215 * latents
            # image = self.vae_decoder(latent_sample=latents)[0]
            # it seems likes there is a strange result for using half-precision vae decoder if batchsize>1
            image = np.concatenate(
                [vae(latent_sample=latents[i : i + 1])[0] for i in range(latents.shape[0])]
            )

            image = np.clip(image / 2 + 0.5, 0, 1)
            image = image.transpose((0, 2, 3, 1))
            image = VaeImageProcessor.numpy_to_pil(image)[0]

            vae.release_session()

        torch.cuda.empty_cache()

        image_dto = context.services.images.create(
            image=image,
            image_origin=ResourceOrigin.INTERNAL,
            image_category=ImageCategory.GENERAL,
            node_id=self.id,
            session_id=context.graph_execution_state_id,
            is_intermediate=self.is_intermediate,
            metadata=self.metadata.dict() if self.metadata else None,
        )

        return ImageOutput(
            image=ImageField(image_name=image_dto.image_name),
            width=image_dto.width,
            height=image_dto.height,
        )

class ONNXModelLoaderOutput(BaseInvocationOutput):
    """Model loader output"""

    #fmt: off
    type: Literal["model_loader_output_onnx"] = "model_loader_output_onnx"

    unet: UNetField = Field(default=None, description="UNet submodel")
    clip: ClipField = Field(default=None, description="Tokenizer and text_encoder submodels")
    vae_decoder: VaeField = Field(default=None, description="Vae submodel")
    vae_encoder: VaeField = Field(default=None, description="Vae submodel")
    #fmt: on

class ONNXSD1ModelLoaderInvocation(BaseInvocation):
    """Loading submodels of selected model."""

    type: Literal["sd1_model_loader_onnx"] = "sd1_model_loader_onnx"

    model_name: str = Field(default="", description="Model to load")
    # TODO: precision?

    # Schema customisation
    class Config(InvocationConfig):
        schema_extra = {
            "ui": {
                "tags": ["model", "loader"],
                "type_hints": {
                  "model_name": "model" # TODO: rename to model_name?
                }
            },
        }

    def invoke(self, context: InvocationContext) -> ONNXModelLoaderOutput:

        model_name = "stable-diffusion-v1-5"
        base_model = BaseModelType.StableDiffusion1

        # TODO: not found exceptions
        if not context.services.model_manager.model_exists(
            model_name=model_name,
            base_model=BaseModelType.StableDiffusion1,
            model_type=ModelType.ONNX,
        ):
            raise Exception(f"Unkown model name: {model_name}!")


        return ONNXModelLoaderOutput(
            unet=UNetField(
                unet=ModelInfo(
                    model_name=model_name,
                    base_model=base_model,
                    model_type=ModelType.ONNX,
                    submodel=SubModelType.UNet,
                ),
                scheduler=ModelInfo(
                    model_name=model_name,
                    base_model=base_model,
                    model_type=ModelType.ONNX,
                    submodel=SubModelType.Scheduler,
                ),
                loras=[],
            ),
            clip=ClipField(
                tokenizer=ModelInfo(
                    model_name=model_name,
                    base_model=base_model,
                    model_type=ModelType.ONNX,
                    submodel=SubModelType.Tokenizer,
                ),
                text_encoder=ModelInfo(
                    model_name=model_name,
                    base_model=base_model,
                    model_type=ModelType.ONNX,
                    submodel=SubModelType.TextEncoder,
                ),
                loras=[],
            ),
            vae_decoder=VaeField(
                vae=ModelInfo(
                    model_name=model_name,
                    base_model=base_model,
                    model_type=ModelType.ONNX,
                    submodel=SubModelType.VaeDecoder,
                ),
            ),
            vae_encoder=VaeField(
                vae=ModelInfo(
                    model_name=model_name,
                    base_model=base_model,
                    model_type=ModelType.ONNX,
                    submodel=SubModelType.VaeEncoder,
                ),
            )
        )

class OnnxModelField(BaseModel):
    """Onnx model field"""

    model_name: str = Field(description="Name of the model")
    base_model: BaseModelType = Field(description="Base model")
    model_type: ModelType = Field(description="Model Type")

class OnnxModelLoaderInvocation(BaseInvocation):
    """Loads a main model, outputting its submodels."""

    type: Literal["onnx_model_loader"] = "onnx_model_loader"

    model: OnnxModelField = Field(description="The model to load")

    # Schema customisation
    class Config(InvocationConfig):
        schema_extra = {
            "ui": {
                "title": "Onnx Model Loader",
                "tags": ["model", "loader"],
                "type_hints": {"model": "model"},
            },
        }

    def invoke(self, context: InvocationContext) -> ONNXModelLoaderOutput:
        base_model = self.model.base_model
        model_name = self.model.model_name
        model_type = ModelType.ONNX

        # TODO: not found exceptions
        if not context.services.model_manager.model_exists(
            model_name=model_name,
            base_model=base_model,
            model_type=model_type,
        ):
            raise Exception(f"Unknown {base_model} {model_type} model: {model_name}")

        """
        if not context.services.model_manager.model_exists(
            model_name=self.model_name,
            model_type=SDModelType.Diffusers,
            submodel=SDModelType.Tokenizer,
        ):
            raise Exception(
                f"Failed to find tokenizer submodel in {self.model_name}! Check if model corrupted"
            )

        if not context.services.model_manager.model_exists(
            model_name=self.model_name,
            model_type=SDModelType.Diffusers,
            submodel=SDModelType.TextEncoder,
        ):
            raise Exception(
                f"Failed to find text_encoder submodel in {self.model_name}! Check if model corrupted"
            )

        if not context.services.model_manager.model_exists(
            model_name=self.model_name,
            model_type=SDModelType.Diffusers,
            submodel=SDModelType.UNet,
        ):
            raise Exception(
                f"Failed to find unet submodel from {self.model_name}! Check if model corrupted"
            )
        """

        return ONNXModelLoaderOutput(
            unet=UNetField(
                unet=ModelInfo(
                    model_name=model_name,
                    base_model=base_model,
                    model_type=model_type,
                    submodel=SubModelType.UNet,
                ),
                scheduler=ModelInfo(
                    model_name=model_name,
                    base_model=base_model,
                    model_type=model_type,
                    submodel=SubModelType.Scheduler,
                ),
                loras=[],
            ),
            clip=ClipField(
                tokenizer=ModelInfo(
                    model_name=model_name,
                    base_model=base_model,
                    model_type=model_type,
                    submodel=SubModelType.Tokenizer,
                ),
                text_encoder=ModelInfo(
                    model_name=model_name,
                    base_model=base_model,
                    model_type=model_type,
                    submodel=SubModelType.TextEncoder,
                ),
                loras=[],
                skipped_layers=0,
            ),
            vae_decoder=VaeField(
                vae=ModelInfo(
                    model_name=model_name,
                    base_model=base_model,
                    model_type=model_type,
                    submodel=SubModelType.VaeDecoder,
                ),
            ),
            vae_encoder=VaeField(
                vae=ModelInfo(
                    model_name=model_name,
                    base_model=base_model,
                    model_type=model_type,
                    submodel=SubModelType.VaeEncoder,
                ),
            )
        )