Initial commit: Comfyui_o1key v1.10.0

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o1key
2026-02-06 15:56:30 +08:00
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"""
Google Gemini 节点
ComfyUI 自定义节点,用于调用 Gemini Flash 模型进行多模态文本生成
"""
import base64
import os
import time
from typing import Dict, List, Optional, Tuple
import torch
from ..utils.image_utils import tensor_to_pil, encode_image_to_base64
from ..clients.gemini_flash_client import GeminiFlashClient
from ..models_config import get_enabled_flash_models
# 支持的视频 MIME 类型映射
VIDEO_MIME_TYPES = {
".mp4": "video/mp4",
".mpeg": "video/mpeg",
".mpg": "video/mpg",
".mov": "video/mov",
".avi": "video/avi",
".flv": "video/x-flv",
".webm": "video/webm",
".wmv": "video/wmv",
".3gp": "video/3gpp",
".3gpp": "video/3gpp"
}
class GoogleGemini:
"""
Google Gemini 节点
功能:
- 支持多个 Gemini Flash 模型
- 支持图片和视频输入
- 支持系统指令
- 支持不同思考深度(不思考/高)
- 输出生成的文本内容
"""
# 支持的思考深度选项
THINKING_DEPTHS = ["不思考", "高"]
def __init__(self):
"""初始化节点"""
self.client = None
@classmethod
def INPUT_TYPES(cls):
"""
定义输入参数
"""
# 从配置获取启用的模型列表
enabled_models = get_enabled_flash_models()
default_model = enabled_models[0] if enabled_models else "gemini-3-flash-preview"
return {
"required": {
"模型": (enabled_models, {
"default": default_model
}),
"提示词": ("STRING", {
"default": "",
"multiline": True
}),
"思考深度": (cls.THINKING_DEPTHS, {
"default": "不思考"
})
},
"optional": {
"系统指令": ("STRING", {
"default": "",
"multiline": True
}),
"图片": ("IMAGE",),
"视频": ("VIDEO",)
}
}
# 返回值类型
RETURN_TYPES = ("STRING", "STRING")
RETURN_NAMES = ("主要内容", "思考内容")
# 执行函数名
FUNCTION = "generate"
# 节点分类
CATEGORY = "text/generation"
# 允许输出到 UI
OUTPUT_NODE = True
def _prepare_image_data(
self,
images: Optional[torch.Tensor]
) -> Optional[List[Dict[str, str]]]:
"""
准备图片数据
Args:
images: ComfyUI 图片张量 [B, H, W, C]
Returns:
图片数据列表,每个元素包含 mime_type 和 data
"""
if images is None:
return None
image_data = []
pil_images = tensor_to_pil(images)
for img in pil_images:
b64_str = encode_image_to_base64(img)
image_data.append({
"mime_type": "image/png",
"data": b64_str
})
return image_data if image_data else None
def _prepare_video_data(
self,
video
) -> Optional[Dict[str, str]]:
"""
准备视频数据
ComfyUI VIDEO 类型包含视频文件路径信息。
读取视频文件并转换为 base64。
Args:
video: ComfyUI VIDEO 类型数据
Returns:
视频数据字典,包含 mime_type 和 data
"""
if video is None:
return None
# VIDEO 类型通常是一个字典,包含 'video' 键指向文件路径
# 或者直接是文件路径字符串
video_path = None
if isinstance(video, dict):
# 尝试获取视频路径
video_path = video.get("video") or video.get("path") or video.get("file")
elif isinstance(video, str):
video_path = video
elif hasattr(video, "video"):
video_path = video.video
if not video_path or not os.path.exists(video_path):
print(f"Google Gemini: 视频文件不存在或路径无效: {video_path}")
return None
# 获取文件扩展名和 MIME 类型
_, ext = os.path.splitext(video_path)
ext = ext.lower()
mime_type = VIDEO_MIME_TYPES.get(ext, "video/mp4")
# 检查文件大小(限制 20MB)
file_size = os.path.getsize(video_path)
if file_size > 20 * 1024 * 1024:
raise ValueError(
f"视频文件过大 ({file_size / 1024 / 1024:.2f}MB),"
f"请使用不超过 20MB 的视频文件"
)
# 读取并编码视频
try:
with open(video_path, "rb") as f:
video_bytes = f.read()
b64_str = base64.b64encode(video_bytes).decode("utf-8")
return {
"mime_type": mime_type,
"data": b64_str
}
except Exception as e:
print(f"Google Gemini: 读取视频文件失败 - {str(e)}")
return None
def _parse_dual_output(self, raw_response: Dict) -> Tuple[str, str]:
"""
解析包含思考内容和主要内容的响应
Args:
raw_response: API 原始响应字典
Returns:
(主要内容, 思考内容)
"""
candidates = raw_response.get("candidates", [])
if not candidates:
return ("", "")
parts = candidates[0].get("content", {}).get("parts", [])
thought_text = ""
main_text = ""
for part in parts:
if part.get("thought") is True:
# 思考部分
thought_text = part.get("text", "")
elif "thoughtSignature" in part or "text" in part:
# 主要内容
main_text = part.get("text", "")
return (main_text, thought_text)
def generate(
self,
模型: str,
提示词: str,
思考深度: str,
系统指令: Optional[str] = None,
图片: Optional[torch.Tensor] = None,
视频=None
) -> Tuple[str]:
"""
生成文本
Args:
模型: 使用的模型名称
提示词: 用户提示词
思考深度: 思考深度选项
系统指令: 系统级指令
图片: 输入图片
视频: 输入视频
Returns:
生成的文本 (STRING,)
"""
start_time = time.time()
try:
# 初始化 API 客户端
if self.client is None:
try:
self.client = GeminiFlashClient()
except ValueError as e:
raise ValueError(f"初始化失败: {str(e)}")
# 准备图片数据
image_data = self._prepare_image_data(图片)
if image_data:
print(f"Google Gemini: 输入 {len(image_data)} 张图片")
# 准备视频数据
video_data = self._prepare_video_data(视频)
if video_data:
print(f"Google Gemini: 输入视频 ({video_data['mime_type']})")
# 构建输入描述
input_desc = []
if 提示词:
input_desc.append("文本")
if image_data:
input_desc.append(f"{len(image_data)}张图片")
if video_data:
input_desc.append("视频")
print(f"Google Gemini: 模型 = {模型}")
print(f"Google Gemini: 多模态输入 ({', '.join(input_desc)})")
print(f"Google Gemini: 思考深度 = {思考深度}")
print(f"Google Gemini: 发送请求...")
# 获取端点和构建请求体
endpoint = self.client.get_endpoint(model=模型, thinking_depth=思考深度)
request_body = self.client.build_request_body(
prompt=提示词,
system_instruction=系统指令,
image_data=image_data,
video_data=video_data
)
# 根据是否有视频设置超时
timeout = 300 if video_data else 180
# 调用底层 API 获取原始响应
async def get_raw_response():
return await self.client.request_async(
endpoint,
request_body,
session=None,
timeout=timeout
)
# 在独立线程中执行异步请求
raw_response = self.client.run_async_in_thread(get_raw_response())
# 计算耗时
elapsed = time.time() - start_time
# 解析响应,分离主要内容和思考内容
main_text, thought_text = self._parse_dual_output(raw_response)
# 输出信息
print(f"Google Gemini: 生成完成 (耗时: {elapsed:.2f}s)")
print(f"Google Gemini: 主要内容长度: {len(main_text)} 字符")
print(f"Google Gemini: 思考内容长度: {len(thought_text)} 字符")
# 输出预览
if main_text:
preview = main_text[:100] + "..." if len(main_text) > 100 else main_text
print(f"Google Gemini: 主要内容预览: {preview}")
return (main_text, thought_text)
except ValueError as e:
# 检测是否为授权错误
if str(e) == "未授权!":
print("请联系作者授权后方可使用!")
else:
print(f"Google Gemini: 输入错误 - {str(e)}")
raise
except RuntimeError as e:
print(f"Google Gemini: API 错误 - {str(e)}")
raise
except Exception as e:
print(f"Google Gemini: 未知错误 - {str(e)}")
raise