Nano Banana Pro 文生图

import requests
import base64

# ========== 配置 ==========
API_KEY = "sk-YOUR_API_KEY"
API_URL = "https://api.laozhang.ai/v1beta/models/gemini-3-pro-image-preview:generateContent"
PROMPT = "一只可爱的橘猫"
ASPECT_RATIO = "1:1"
IMAGE_SIZE = "2K"  # Nano Banana Pro 支持: 1K, 2K, 4K
# ============================

headers = {"Authorization": f"Bearer {API_KEY}", "Content-Type": "application/json"}

payload = {
    "contents": [{"parts": [{"text": PROMPT}]}],
    "generationConfig": {
        "responseModalities": ["IMAGE"],
        "imageConfig": {
            "aspectRatio": ASPECT_RATIO,
            "imageSize": IMAGE_SIZE
        }
    }
}

response = requests.post(API_URL, headers=headers, json=payload, timeout=180)
result = response.json()

# 保存图片
image_data = result["candidates"][0]["content"]["parts"][0]["inlineData"]["data"]
with open("output.png", "wb") as f:
    f.write(base64.b64decode(image_data))

print("✅ 图片已保存: output.png")

import requests
import base64

# ========== 配置 ==========
API_KEY = "sk-YOUR_API_KEY"
API_URL = "https://api.laozhang.ai/v1beta/models/gemini-3-pro-image-preview:generateContent"

INPUT_IMAGE = "output.png"  # 使用示例1生成的图片
PROMPT = "把这张图变成梵高星空风格的油画"
ASPECT_RATIO = "1:1"
IMAGE_SIZE = "2K"
# ============================

# 读取并编码图片
with open(INPUT_IMAGE, "rb") as f:
    image_b64 = base64.b64encode(f.read()).decode("utf-8")

headers = {"Authorization": f"Bearer {API_KEY}", "Content-Type": "application/json"}

payload = {
    "contents": [{
        "parts": [
            {"text": PROMPT},
            {"inline_data": {"mime_type": "image/jpeg", "data": image_b64}}
        ]
    }],
    "generationConfig": {
        "responseModalities": ["IMAGE"],
        "imageConfig": {
            "aspectRatio": ASPECT_RATIO,
            "imageSize": IMAGE_SIZE
        }
    }
}

response = requests.post(API_URL, headers=headers, json=payload, timeout=180)
result = response.json()

# 保存图片
output_data = result["candidates"][0]["content"]["parts"][0]["inlineData"]["data"]
with open("output_styled.png", "wb") as f:
    f.write(base64.b64decode(output_data))

print("✅ 图片已保存: output_styled.png")

import requests
import base64

# ========== 配置 ==========
API_KEY = "sk-YOUR_API_KEY"
API_URL = "https://api.laozhang.ai/v1beta/models/gemini-3-pro-image-preview:generateContent"

# 使用前面生成的两张图（示例1和示例2的输出）
IMAGES = ["output.png", "output_styled.png"]
PROMPT = "将这两张图融合成一个艺术作品"
ASPECT_RATIO = "16:9"
IMAGE_SIZE = "2K"
# ============================

# 构建 parts: 文本 + 多张图片
parts = [{"text": PROMPT}]

for img_path in IMAGES:
    with open(img_path, "rb") as f:
        img_b64 = base64.b64encode(f.read()).decode("utf-8")
    parts.append({"inline_data": {"mime_type": "image/png", "data": img_b64}})

headers = {"Authorization": f"Bearer {API_KEY}", "Content-Type": "application/json"}

payload = {
    "contents": [{"parts": parts}],
    "generationConfig": {
        "responseModalities": ["IMAGE"],
        "imageConfig": {
            "aspectRatio": ASPECT_RATIO,
            "imageSize": IMAGE_SIZE
        }
    }
}

response = requests.post(API_URL, headers=headers, json=payload, timeout=180)
result = response.json()

# 保存图片
output_data = result["candidates"][0]["content"]["parts"][0]["inlineData"]["data"]
with open("output_mixed.png", "wb") as f:
    f.write(base64.b64decode(output_data))

print("✅ 图片已保存: output_mixed.png")

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Nano Banana Pro 图片生成 - 完整演示脚本
包含三个场景：文生图、单图生图、多图混合
"""

import requests
import base64
import os
from datetime import datetime

# ========== 配置区 ==========
API_KEY = "sk-YOUR_API_KEY"
API_URL = "https://api.laozhang.ai/v1beta/models/gemini-3-pro-image-preview:generateContent"
# ============================


def generate_text_to_image(prompt, aspect_ratio="16:9", image_size="2K"):
    """场景1: 文生图"""
    print(f"\n📸 文生图: {prompt}")

    payload = {
        "contents": [{"parts": [{"text": prompt}]}],
        "generationConfig": {
            "responseModalities": ["IMAGE"],
            "imageConfig": {
                "aspectRatio": aspect_ratio,
                "imageSize": image_size
            }
        }
    }

    return call_api(payload, f"text_{image_size}")


def generate_image_to_image(input_image, prompt, aspect_ratio="1:1", image_size="2K"):
    """场景2: 单图生图"""
    print(f"\n🎨 单图生图: {input_image}")

    with open(input_image, "rb") as f:
        img_b64 = base64.b64encode(f.read()).decode("utf-8")

    payload = {
        "contents": [{
            "parts": [
                {"text": prompt},
                {"inline_data": {"mime_type": "image/jpeg", "data": img_b64}}
            ]
        }],
        "generationConfig": {
            "responseModalities": ["IMAGE"],
            "imageConfig": {
                "aspectRatio": aspect_ratio,
                "imageSize": image_size
            }
        }
    }

    return call_api(payload, f"styled_{image_size}")


def generate_multi_image_mix(images, prompt, aspect_ratio="16:9", image_size="2K"):
    """场景3: 多图混合"""
    print(f"\n🖼️  多图混合: {len(images)} 张图片")

    parts = [{"text": prompt}]
    for img in images:
        with open(img, "rb") as f:
            parts.append({"inline_data": {"mime_type": "image/jpeg", "data": base64.b64encode(f.read()).decode()}})

    payload = {
        "contents": [{"parts": parts}],
        "generationConfig": {
            "responseModalities": ["IMAGE"],
            "imageConfig": {
                "aspectRatio": aspect_ratio,
                "imageSize": image_size
            }
        }
    }

    return call_api(payload, f"mixed_{image_size}")


def call_api(payload, prefix):
    """调用 API"""
    headers = {"Authorization": f"Bearer {API_KEY}", "Content-Type": "application/json"}

    try:
        response = requests.post(API_URL, headers=headers, json=payload, timeout=180)
        result = response.json()

        image_data = result["candidates"][0]["content"]["parts"][0]["inlineData"]["data"]
        filename = f"{prefix}_{datetime.now().strftime('%Y%m%d_%H%M%S')}.png"

        with open(filename, "wb") as f:
            f.write(base64.b64decode(image_data))

        print(f"✅ 已保存: {filename}")
        return filename
    except Exception as e:
        print(f"❌ 错误: {e}")
        return None


# ========== 主程序 ==========
def main():
    print("🎨 Nano Banana Pro 图片生成 - 完整演示")

    # 场景 1: 文生图
    img1 = generate_text_to_image(
        "A futuristic cyberpunk city at night, 4k",
        aspect_ratio="16:9",
        image_size="4K"
    )

    # 场景 2: 单图生图 (需要 test_cat.jpg)
    if os.path.exists("test_cat.jpg"):
        img2 = generate_image_to_image(
            "test_cat.jpg",
            "Van Gogh Starry Night style",
            aspect_ratio="1:1",
            image_size="2K"
        )

    # 场景 3: 多图混合 (需要 test_cat.jpg, test_apple.jpg)
    if os.path.exists("test_cat.jpg") and os.path.exists("test_apple.jpg"):
        generate_multi_image_mix(
            ["test_cat.jpg", "test_apple.jpg"],
            "A cat eating an apple",
            aspect_ratio="16:9",
            image_size="2K"
        )

    print("\n✅ 演示完成！")


if __name__ == "__main__":
    main()

#!/bin/bash

# ============================================================
# Nano Banana Pro 图片生成工具 - Bash/Curl 版本
# 支持 4K 分辨率和多种纵横比
# ============================================================

# ========== 配置区 ==========
API_KEY="sk-YOUR_API_KEY"
API_URL="https://api.laozhang.ai/v1beta/models/gemini-3-pro-image-preview:generateContent"
PROMPT="A futuristic cyberpunk city at night, neon lights, flying cars, highly detailed, 4k"
ASPECT_RATIO="16:9"
IMAGE_SIZE="4K"  # 1K, 2K, 4K

OUTPUT_FILE="gemini_${IMAGE_SIZE}_$(date +%Y%m%d_%H%M%S).png"
# ============================

# 检查依赖
if ! command -v jq &> /dev/null; then
    echo "❌ 错误: 需要安装 jq 工具"
    echo ""
    echo "安装方法:"
    echo "  macOS:   brew install jq"
    echo "  Ubuntu:  sudo apt-get install jq"
    echo "  CentOS:  sudo yum install jq"
    exit 1
fi

echo "============================================================"
echo "Nano Banana Pro 图片生成工具"
echo "============================================================"
echo "⏰ 开始时间: $(date '+%Y-%m-%d %H:%M:%S')"
echo "🚀 开始生成图片..."
echo "📝 提示词: ${PROMPT}"
echo "📐 纵横比: ${ASPECT_RATIO}"
echo "🖼️  分辨率: ${IMAGE_SIZE}"

# 构建 JSON 请求
REQUEST_JSON=$(jq -n \
  --arg prompt "$PROMPT" \
  --arg ratio "$ASPECT_RATIO" \
  --arg size "$IMAGE_SIZE" \
  '{
    contents: [{
      parts: [{text: $prompt}]
    }],
    generationConfig: {
      responseModalities: ["IMAGE"],
      imageConfig: {
        aspectRatio: $ratio,
        imageSize: $size
      }
    }
  }')

# 发送请求
RESPONSE=$(curl -s -X POST "${API_URL}" \
  -H "Authorization: Bearer ${API_KEY}" \
  -H "Content-Type: application/json" \
  -d "${REQUEST_JSON}")

# 检查错误
if echo "${RESPONSE}" | jq -e '.error' &> /dev/null; then
    echo "❌ 生成失败"
    echo "💥 错误信息:"
    echo "${RESPONSE}" | jq -r '.error.message // .error'
    exit 1
fi

# 提取图片数据
echo "💾 正在保存图片..."
IMAGE_DATA=$(echo "${RESPONSE}" | jq -r '.candidates[0].content.parts[0].inlineData.data' 2>/dev/null)

if [ -z "$IMAGE_DATA" ] || [ "$IMAGE_DATA" = "null" ]; then
    echo "❌ 未找到图片数据"
    exit 1
fi

# 解码并保存图片
echo "${IMAGE_DATA}" | base64 --decode > "${OUTPUT_FILE}"

# 检查结果
if [ -f "${OUTPUT_FILE}" ]; then
    FILE_SIZE=$(du -h "${OUTPUT_FILE}" | cut -f1)
    echo "✅ 图片已保存: ${OUTPUT_FILE}"
    echo "📊 文件大小: ${FILE_SIZE}"
    echo "============================================================"
    echo "🎉 生成成功！"
    echo "⏰ 结束时间: $(date '+%Y-%m-%d %H:%M:%S')"
else
    echo "❌ 图片保存失败"
    exit 1
fi