333 lines
14 KiB
Python
333 lines
14 KiB
Python
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import json
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import time
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import requests
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from django.http import JsonResponse
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from .models import VideoGeneration
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from django.views.decorators.csrf import csrf_exempt
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from .base import logger,deduct_points
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def generate_video_id(user_id):
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"""
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根据用户ID和当前时间戳生成唯一的视频ID
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"""
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timestamp = int(time.time())
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video_id = f"{timestamp}_{user_id}"
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print(f"生成的视频ID: {video_id}")
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return video_id
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def get_dimensions(model, width=None, height=None):
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"""
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根据模型返回相应的宽高分辨率:
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gen3: 最大1280x768
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gen2: 可传入前端指定的宽高，默认最大1920x1080
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"""
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if model == 'gen3':
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return 1280, 768
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elif model == 'gen2':
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# 如果前端提供了 width 和 height，则使用传入的值，否则使用默认值
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if width and height:
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return width, height
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return 1920, 1080
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else:
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raise ValueError(f"不支持的模型: {model}")
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def get_headers():
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"""
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返回统一的请求头
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"""
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return {
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"accept": "application/json",
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"content-type": "application/json",
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"Authorization": "12e76710fad2047db8c0cc6b25987e2a2" # 替换为你的真实授权密钥
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}
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@csrf_exempt
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def text_to_video(request):
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"""
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文本生成视频接口
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"""
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if request.method == "POST":
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try:
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if not request.user.is_authenticated:
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return JsonResponse({'code': 401, 'message': '用户未登录'})
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user = request.user
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data = json.loads(request.body)
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# 获取参数
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text_prompt = data.get('text_prompt')
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style = data.get('style', '') # 选择的风格，默认是 'general'
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model = data.get('model', 'gen3') # 选择模型，默认是 'gen3'
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time_duration = int(data.get('time', 5)) # 视频时长
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motion = int(data.get('motion', 5)) # 视频丰富度参数
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width = data.get('width') # 由前端传入的宽度（仅限gen2）
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height = data.get('height') # 由前端传入的高度（仅限gen2）
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print(f"生成模型: {model}, 时长: {time_duration}, 文本: {text_prompt}, 宽高: {width}x{height}, 画面丰富度: {motion}")
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result = deduct_points(user, "text-to-video")
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if result is not True:
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return result # 返回积分不足的响应
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# 验证模型和时长限制
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if model == 'gen3' and time_duration not in [5, 10]:
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return JsonResponse({'code': 400, 'message': 'gen3 模型只支持 5s 或 10s 的时长'})
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if model == 'gen2' and time_duration != 4:
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return JsonResponse({'code': 400, 'message': 'gen2 模型只支持 4s 的时长'})
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# 生成视频ID
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video_id = generate_video_id(user.id)
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# 根据模型获取宽高
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width, height = get_dimensions(model, width, height)
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print(f"生成的视频分辨率: {width}x{height}")
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# 准备POST请求数据
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payload = {
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"text_prompt": f"{text_prompt}. Style: {style}",
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"model": model,
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"width": width,
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"height": height,
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"motion": motion, # 视频画面丰富度
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"seed": 0,
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"upscale": False,
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"interpolate": False,
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"callback_url": "https://www.typeframes.ai/api/callback/",
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"time": time_duration # 视频时长
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}
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print(f'text_to_video 请求体: {payload}')
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# 发送请求到API
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response = requests.post('https://api.aivideoapi.com/runway/generate/text', json=payload, headers=get_headers())
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print(f"API响应状态码: {response.status_code}")
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print(f"API响应内容: {response.text}")
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# 解析响应数据
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if response.status_code == 200:
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res_data = response.json()
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uuid = res_data.get('uuid')
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# 保存生成记录到数据库
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video_generation = VideoGeneration.objects.create(
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video_id=video_id,
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user=user,
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text=text_prompt,
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status='in_progress',
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pid=uuid,
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media_type=f'{model}_text_to_video',
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slug=f'text-to-video',
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ratio=f"{width}:{height}"
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)
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video_generation.save()
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# 返回成功响应
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return JsonResponse({
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'code': 200,
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'message': '请求成功，视频正在生成中',
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'data': {
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'video_id': video_generation.video_id,
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'status': video_generation.status,
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'pid': uuid
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}
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})
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else:
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return JsonResponse({'code': response.status_code, 'message': 'API请求失败', 'data': {}})
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except Exception as e:
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print(f"发生错误: {str(e)}")
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return JsonResponse({'code': 500, 'message': f'内部错误: {str(e)}', 'data': {}})
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return JsonResponse({'code': 405, 'message': '请求方法错误', 'data': {}})
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@csrf_exempt
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def image_to_video(request):
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"""
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图片生成视频接口，图片宽高自适应
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"""
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if request.method == "POST":
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try:
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if not request.user.is_authenticated:
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return JsonResponse({'code': 401, 'message': '用户未登录'})
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user = request.user
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data = json.loads(request.body)
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# 获取参数
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text_prompt = data.get('text_prompt')
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image_url = data.get('image_url')
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model = data.get('model', 'gen3') # 选择模型，默认是 'gen3'
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time_duration = int(data.get('time', 5)) # 视频时长
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motion = int(data.get('motion', 5)) # 视频丰富度
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print(f"生成模型: {model}, 图片地址: {image_url}, 时长: {time_duration}, 画面丰富度: {motion}")
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result = deduct_points(user, "img-to-video")
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if result is not True:
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return result # 返回积分不足的响应
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# 验证模型和时长限制
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if model == 'gen3' and time_duration not in [5, 10]:
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return JsonResponse({'code': 400, 'message': 'gen3 模型只支持 5s 或 10s 的时长'})
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if model == 'gen2' and time_duration != 4:
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return JsonResponse({'code': 400, 'message': 'gen2 模型只支持 4s 的时长'})
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# 生成视频ID
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video_id = generate_video_id(user.id)
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# 准备POST请求数据，宽高不需要传入，图片自适应
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payload = {
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"text_prompt": text_prompt,
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"model": model,
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"img_prompt": image_url,
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"image_as_end_frame": False, # 图片不作为最后一帧
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"motion": motion, # 视频丰富度
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"seed": 0,
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"upscale": False,
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"interpolate": False,
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"callback_url": "https://www.typeframes.ai/api/callback/",
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"time": time_duration # 视频时长
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}
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print(f'img_to_video 请求体: {payload}')
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# 请求头
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headers = get_headers()
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# 发送请求到API
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response = requests.post('https://api.aivideoapi.com/runway/generate/imageDescription', json=payload, headers=headers)
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print(f"API响应状态码: {response.status_code}")
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print(f"API响应内容: {response.text}")
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# 解析响应数据
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if response.status_code == 200:
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res_data = response.json()
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uuid = res_data.get('uuid')
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# 保存生成记录到数据库
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video_generation = VideoGeneration.objects.create(
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video_id=video_id,
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user=user,
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text=text_prompt,
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status='in_progress',
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pid=uuid,
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media_type=f'{model}_img_to_video',
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slug=f'img-to-video',
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ratio="auto" # 图片自适应宽高
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)
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video_generation.save()
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# 返回成功响应
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return JsonResponse({
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'code': 200,
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'message': '请求成功，视频正在生成中',
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'data': {
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'video_id': video_generation.video_id,
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'status': video_generation.status,
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'pid': uuid
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}
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})
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else:
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return JsonResponse({'code': response.status_code, 'message': 'API请求失败', 'data': {}})
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except Exception as e:
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print(f"发生错误: {str(e)}")
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return JsonResponse({'code': 500, 'message': f'内部错误: {str(e)}', 'data': {}})
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return JsonResponse({'code': 405, 'message': '请求方法错误', 'data': {}})
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@csrf_exempt
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def extend_video(request):
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"""
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延长视频的函数，发送请求到 /runway/extend
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"""
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if request.method == "POST":
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try:
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if not request.user.is_authenticated:
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return JsonResponse({'code': 401, 'message': '用户未登录'})
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user = request.user
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data = json.loads(request.body)
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# 获取参数
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pid = data.get('pid')
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motion = int(data.get('motion', 5)) # 视频丰富度
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# 获取当前视频生成记录
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video_generation = VideoGeneration.objects.get(pid=pid)
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# 通过 media_type 判断模型是 gen3 还是 gen2
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if 'gen3' in video_generation.media_type:
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model = 'gen3'
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# 验证 gen3 的延长逻辑
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if video_generation.extension_count >= 1 or video_generation.time_duration >= 10:
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return JsonResponse({'code': 400, 'message': 'gen3 最大时长为 10s，无法继续延长'})
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time_extension = 5 # 每次延长 5 秒
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elif 'gen2' in video_generation.media_type:
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model = 'gen2'
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# 验证 gen2 的延长逻辑
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if video_generation.extension_count >= 2 or video_generation.time_duration >= 12:
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return JsonResponse({'code': 400, 'message': 'gen2 最大时长为 12s，无法继续延长'})
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time_extension = 4 # 每次延长 4 秒
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else:
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return JsonResponse({'code': 400, 'message': '未知的模型类型'})
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result = deduct_points(user, video_generation.slug)
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if result is not True:
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return result # 返回积分不足的响应
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# 生成新的视频ID
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new_video_id = generate_video_id(user.id)
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# 默认请求体
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payload = {
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"uuid": pid, # 视频的 UUID
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"motion": motion, # 视频丰富度
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"seed": 0, # 默认 seed 为 0
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"upscale": False, # 默认开启 upscale
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"interpolate": False, # 默认开启 interpolate
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"callback_url": "https://www.typeframes.ai/api/callback/"
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}
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print(f"extend_video 请求体: {payload}")
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headers = get_headers()
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# 发送 POST 请求
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response = requests.post('https://api.aivideoapi.com/runway/extend', json=payload, headers=headers)
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print(f"API响应状态码: {response.status_code}")
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print(f"API响应内容: {response.text}")
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# 解析响应内容
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if response.status_code == 200:
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res_data = response.json()
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new_pid = res_data.get('uuid')
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# 创建新的延长视频记录，复制上一条视频的参数
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new_video_generation = VideoGeneration.objects.create(
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video_id=new_video_id,
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user=user,
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text=video_generation.text,
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voice_name=video_generation.voice_name,
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style=video_generation.style,
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rate=video_generation.rate,
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media_type=video_generation.media_type,
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ratio=video_generation.ratio,
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status='in_progress',
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pid=new_pid,
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time_duration=video_generation.time_duration + time_extension, # 增加对应模型的时长
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extension_count=video_generation.extension_count + 1, # 增加延长次数
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slug=video_generation.slug # slug 使用中划线
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)
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print(f"延长视频成功: {res_data}")
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|
|
return JsonResponse({'code': 200, 'message': '视频延长请求成功', 'data': {'new_pid': new_pid}})
|
|||
|
|
|
|||
|
|
else:
|
|||
|
|
return JsonResponse({'code': response.status_code, 'message': 'API请求失败', 'data': {}})
|
|||
|
|
|
|||
|
|
except Exception as e:
|
|||
|
|
print(f"发生错误: {str(e)}")
|
|||
|
|
return JsonResponse({'code': 500, 'message': f'内部错误: {str(e)}', 'data': {}})
|
|||
|
|
|
|||
|
|
return JsonResponse({'code': 405, 'message': '请求方法错误', 'data': {}})
|