Initialisation du repository de Beta

venv/lib/python3.12/site-packages/av/video/plane.pyx

@@ -0,0 +1,37 @@
+from av.video.frame cimport VideoFrame
+
+
+cdef class VideoPlane(Plane):
+    def __cinit__(self, VideoFrame frame, int index):
+        # The palette plane has no associated component or linesize; set fields manually
+        if frame.format.name == "pal8" and index == 1:
+            self.width = 256
+            self.height = 1
+            self.buffer_size = 256 * 4
+            return
+
+        for i in range(frame.format.ptr.nb_components):
+            if frame.format.ptr.comp[i].plane == index:
+                component = frame.format.components[i]
+                self.width = component.width
+                self.height = component.height
+                break
+        else:
+            raise RuntimeError(f"could not find plane {index} of {frame.format!r}")
+
+        # Sometimes, linesize is negative (and that is meaningful). We are only
+        # insisting that the buffer size be based on the extent of linesize, and
+        # ignore it's direction.
+        self.buffer_size = abs(self.frame.ptr.linesize[self.index]) * self.height
+
+    cdef size_t _buffer_size(self):
+        return self.buffer_size
+
+    @property
+    def line_size(self):
+        """
+        Bytes per horizontal line in this plane.
+
+        :type: int
+        """
+        return self.frame.ptr.linesize[self.index]