ComfyUI/comfy_api_nodes/nodes_pixverse.py

from inspect import cleandoc

from comfy_api_nodes.apis.pixverse_api import (
    PixverseDto_V2OpenAPIT2VReq,
    PixverseController_ResponseData,
    PixverseGenerationStatusResponse,
    PixverseAspectRatio,
    PixverseQuality,
    PixverseDuration,
    PixverseMotionMode,
    PixverseStatus,
)
from comfy_api_nodes.apis.client import (
    ApiEndpoint,
    HttpMethod,
    SynchronousOperation,
    PollingOperation,
    EmptyRequest,
)
from comfy.comfy_types.node_typing import IO, ComfyNodeABC
from comfy_api.input_impl import VideoFromFile

import requests
from io import BytesIO


class PixverseTextToVideoNode(ComfyNodeABC):
    """
    Generates videos synchronously based on prompt and output_size.
    """

    RETURN_TYPES = (IO.VIDEO,)
    DESCRIPTION = cleandoc(__doc__ or "")  # Handle potential None value
    FUNCTION = "api_call"
    API_NODE = True
    CATEGORY = "api node/video/Pixverse"

    @classmethod
    def INPUT_TYPES(s):
        return {
            "required": {
                "prompt": (
                    IO.STRING,
                    {
                        "multiline": True,
                        "default": "",
                        "tooltip": "Prompt for the video generation",
                    },
                ),
                "aspect_ratio": (
                    [ratio.value for ratio in PixverseAspectRatio],
                ),
                "quality": (
                    [resolution.value for resolution in PixverseQuality],
                    {
                        "default": PixverseQuality.res_540p,
                    },
                ),
                "duration_seconds": ([dur.value for dur in PixverseDuration],),
                "motion_mode": ([mode.value for mode in PixverseMotionMode],),
                "seed": (
                    IO.INT,
                    {
                        "default": 0,
                        "min": 0,
                        "max": 2147483647,
                        "control_after_generate": True,
                        "tooltip": "Seed for video generation.",
                    },
                ),
            },
            "optional": {
                "negative_prompt": (
                    IO.STRING,
                    {
                        "default": "",
                        "forceInput": True,
                        "tooltip": "An optional text description of undesired elements on an image.",
                    },
                ),
            },
            "hidden": {
                "auth_token": "AUTH_TOKEN_COMFY_ORG",
            },
        }

    def api_call(
        self,
        prompt: str,
        aspect_ratio: str,
        quality: str,
        duration_seconds: int,
        motion_mode: str,
        seed,
        negative_prompt: str=None,
        auth_token=None,
        **kwargs,
    ):
        # 1080p is limited to 5 seconds duration
        # only normal motion_mode supported for 1080p or for non-5 second duration
        if quality == PixverseQuality.res_1080p:
            motion_mode = PixverseMotionMode.normal
            duration_seconds = PixverseDuration.dur_5
        elif duration_seconds != PixverseDuration.dur_5:
            motion_mode = PixverseMotionMode.normal

        operation = SynchronousOperation(
            endpoint=ApiEndpoint(
                path="/proxy/pixverse/video/text/generate",
                method=HttpMethod.POST,
                request_model=PixverseDto_V2OpenAPIT2VReq,
                response_model=PixverseController_ResponseData,
            ),
            request=PixverseDto_V2OpenAPIT2VReq(
                prompt=prompt,
                aspect_ratio=aspect_ratio,
                quality=quality,
                duration=duration_seconds,
                motion_mode=motion_mode,
                negative_prompt=negative_prompt if negative_prompt else None,
                seed=seed,
            ),
            auth_token=auth_token,
        )
        response_api = operation.execute()

        if response_api.Resp is None:
            raise Exception(f"Pixverse request failed: '{response_api.ErrMsg}'")

        operation = PollingOperation(
            poll_endpoint=ApiEndpoint(
                path=f"/proxy/pixverse/video/result/{response_api.Resp.video_id}",
                method=HttpMethod.GET,
                request_model=EmptyRequest,
                response_model=PixverseGenerationStatusResponse,
            ),
            completed_statuses=[PixverseStatus.successful],
            failed_statuses=[PixverseStatus.contents_moderation, PixverseStatus.failed],
            status_extractor=lambda x: x.Resp.status,
            auth_token=auth_token,
        )
        response_poll = operation.execute()

        vid_response = requests.get(response_poll.Resp.url)
        return (VideoFromFile(BytesIO(vid_response.content)),)


NODE_CLASS_MAPPINGS = {
    "PixverseTextToVideoNode": PixverseTextToVideoNode
}

NODE_DISPLAY_NAME_MAPPINGS = {
    "PixverseTextToVideoNode": "Pixverse Text to Video"
}