| from collections.abc import Sequence |
|
|
|
|
| cdef object _cinit_bypass_sentinel = object() |
|
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|
|
| |
| |
| cdef class _MotionVectors(SideData): |
| def __init__(self, *args, **kwargs): |
| super().__init__(*args, **kwargs) |
| self._vectors = {} |
| self._len = self.ptr.size // sizeof(lib.AVMotionVector) |
|
|
| def __repr__(self): |
| return f"<av.sidedata.MotionVectors {self.ptr.size} bytes of {len(self)} vectors at 0x{<unsigned int>self.ptr.data:0x}" |
|
|
| def __getitem__(self, int index): |
|
|
| try: |
| return self._vectors[index] |
| except KeyError: |
| pass |
|
|
| if index >= self._len: |
| raise IndexError(index) |
|
|
| vector = self._vectors[index] = MotionVector(_cinit_bypass_sentinel, self, index) |
| return vector |
|
|
| def __len__(self): |
| return self._len |
|
|
| def to_ndarray(self): |
| import numpy as np |
| return np.frombuffer(self, dtype=np.dtype([ |
| ("source", "int32"), |
| ("w", "uint8"), |
| ("h", "uint8"), |
| ("src_x", "int16"), |
| ("src_y", "int16"), |
| ("dst_x", "int16"), |
| ("dst_y", "int16"), |
| ("flags", "uint64"), |
| ("motion_x", "int32"), |
| ("motion_y", "int32"), |
| ("motion_scale", "uint16"), |
| ], align=True)) |
|
|
|
|
| class MotionVectors(_MotionVectors, Sequence): |
| pass |
|
|
|
|
| cdef class MotionVector: |
| def __init__(self, sentinel, _MotionVectors parent, int index): |
| if sentinel is not _cinit_bypass_sentinel: |
| raise RuntimeError("cannot manually instatiate MotionVector") |
| self.parent = parent |
| cdef lib.AVMotionVector *base = <lib.AVMotionVector*>parent.ptr.data |
| self.ptr = base + index |
|
|
| def __repr__(self): |
| return f"<av.sidedata.MotionVector {self.w}x{self.h} from {self.src_x},{self.src_y} to {self.dst_x},{self.dst_y}>" |
|
|
| @property |
| def source(self): |
| return self.ptr.source |
|
|
| @property |
| def w(self): |
| return self.ptr.w |
|
|
| @property |
| def h(self): |
| return self.ptr.h |
|
|
| @property |
| def src_x(self): |
| return self.ptr.src_x |
|
|
| @property |
| def src_y(self): |
| return self.ptr.src_y |
|
|
| @property |
| def dst_x(self): |
| return self.ptr.dst_x |
|
|
| @property |
| def dst_y(self): |
| return self.ptr.dst_y |
|
|
| @property |
| def motion_x(self): |
| return self.ptr.motion_x |
|
|
| @property |
| def motion_y(self): |
| return self.ptr.motion_y |
|
|
| @property |
| def motion_scale(self): |
| return self.ptr.motion_scale |
|
|
