You've already forked FrameTour-RenderWorker
79 lines
2.8 KiB
Python
79 lines
2.8 KiB
Python
from typing import List, Dict, Any
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from .base import EffectProcessor
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class CameraShotEffect(EffectProcessor):
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"""相机镜头效果处理器"""
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def validate_params(self) -> bool:
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"""验证参数：start_time,duration,rotate_deg"""
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params = self.parse_params()
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if not params:
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return True # 使用默认参数
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# 参数格式: "start_time,duration,rotate_deg"
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if len(params) > 3:
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return False
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try:
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for i, param in enumerate(params):
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if param == '':
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continue
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if i == 2: # rotate_deg
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int(param)
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else: # start_time, duration
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float(param)
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return True
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except ValueError:
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return False
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def generate_filter_args(self, video_input: str, effect_index: int) -> tuple[List[str], str]:
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"""生成相机镜头效果的滤镜参数"""
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if not self.validate_params():
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return [], video_input
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params = self.parse_params()
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# 设置默认值
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start = 3.0
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duration = 1.0
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rotate_deg = 0
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if len(params) >= 1 and params[0] != '':
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start = float(params[0])
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if len(params) >= 2 and params[1] != '':
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duration = float(params[1])
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if len(params) >= 3 and params[2] != '':
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rotate_deg = int(params[2])
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filter_args = []
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# 生成输出流标识符
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start_out_str = "[eff_s]"
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mid_out_str = "[eff_m]"
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end_out_str = "[eff_e]"
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final_output = f"[v_eff{effect_index}]"
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# 分割视频流为三部分
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filter_args.append(f"{video_input}split=3{start_out_str}{mid_out_str}{end_out_str}")
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# 选择开始部分帧
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filter_args.append(f"{start_out_str}select=lt(n\\,{int(start * self.frame_rate)}){start_out_str}")
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# 选择结束部分帧
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filter_args.append(f"{end_out_str}select=gt(n\\,{int(start * self.frame_rate)}){end_out_str}")
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# 选择中间特定帧并扩展
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filter_args.append(f"{mid_out_str}select=eq(n\\,{int(start * self.frame_rate)}){mid_out_str}")
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filter_args.append(f"{mid_out_str}tpad=start_mode=clone:start_duration={duration:.4f}{mid_out_str}")
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# 如果需要旋转
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if rotate_deg != 0:
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filter_args.append(f"{mid_out_str}rotate=PI*{rotate_deg}/180{mid_out_str}")
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# 连接三部分
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filter_args.append(f"{start_out_str}{mid_out_str}{end_out_str}concat=n=3:v=1:a=0,setpts=N/{self.frame_rate}/TB{final_output}")
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return filter_args, final_output
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def get_effect_name(self) -> str:
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return "cameraShot" |