pve

pve/mesh.py

@@ -1,61 +0,0 @@
-# People's Video Editor: high quality, GPU accelerated mp4 editor
-# Copyright (C) 2025 Roz K <roz@rozk.net>
-#
-# This file is part of People's Video Editor.
-#
-# People's Video Editor is free software: you can redistribute it and/or modify it under the terms of the
-# GNU General Public License as published by the Free Software Foundation, either version 3 of the License,
-# or (at your option) any later version.
-#
-# People's Video Editor is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
-# without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-# See the GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License along with People's Video Editor.
-# If not, see <https://www.gnu.org/licenses/>.
-
-#TODO: split channels
-
-from shape import Vertex, Shape
-
-from array import array
-
-class Mesh:
-    __slots__ = '_array', '_view', '_size'
-
-    def __init__(self, shape):
-        #TODO: cpp
-        if shape.cutouts:
-            raise NotImplementedError
-        if shape.size > 4:
-            raise NotImplementedError
-
-        self._array = array(Vertex.Type, 2 * 3 * Vertex.Channels)
-        self._view = memoryview(self._array)
-        self._size = self.view.nbytes
-        tl = shape[0]
-        tr = shape[1]
-        br = shape[2]
-        bl = shape[3]
-        self.set(0, 0, tl)
-        self.set(0, 1, tr)
-        self.set(0, 2, br)
-        self.set(1, 0, br)
-        self.set(1, 1, bl)
-        self.set(1, 2, tl)
-
-    def __del__(self):
-        del self._view
-        del self._array
-
-    def set(self, triangle, index, vertex):
-        index = (triangle * 3 + index) * Vertex.Channels
-        self._view[index:(index + Vertex.Channels)] = vertex
-
-    @property
-    def size(self):
-        return self._size
-
-    @property
-    def view(self):
-        return self._view

pve/node.py

@@ -0,0 +1,100 @@
+# People's Video Editor: high quality, GPU accelerated mp4 editor
+# Copyright (C) 2025 Roz K <roz@rozk.net>
+#
+# This file is part of People's Video Editor.
+#
+# People's Video Editor is free software: you can redistribute it and/or modify it under the terms of the
+# GNU General Public License as published by the Free Software Foundation, either version 3 of the License,
+# or (at your option) any later version.
+#
+# People's Video Editor is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+# without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along with People's Video Editor.
+# If not, see <https://www.gnu.org/licenses/>.
+
+from weakref import ref
+
+class Node:
+    __slots__ = 'parent', 'children', 'state', '__weakref__'
+
+    STATE_NEW      = 0
+    STATE_MODIFIED = 1
+    STATE_BUILT    = 2
+
+    def __init__(self, parent = None, children = None):
+        self.parent = None
+        self.children = None
+        self.state = Node.STATE_NEW
+        if children is not None:
+            self.add_children(children)
+        if parent is not None:
+            parent.add_child(self)
+
+    def __del__(self):
+        if self.parent is not None:
+            self.parent().remove_child(self)
+
+    def add_child(self, child: Node):
+        assert child.parent is None
+        child.parent = ref(self)
+        if self.children is None:
+            self.children = [child]
+        else:
+            self.children.append(child)
+        child.state = Node.STATE_NEW
+        self.set_modified()
+
+    def add_children(self, children):
+        for child in children:
+            self.add_child(child)
+
+    def remove_child(self, child: Node):
+        assert child.parent is self
+        child.parent = None
+        self.children.remove(child)
+        self.set_modified()
+
+    def remove_children(self, children):
+        for child in children:
+            self.remove_child(child)
+
+    def is_new(self):
+        return self.state == Node.STATE_NEW
+
+    def needs_rebuilding(self):
+        return self.state != Node.STATE_BUILT
+
+    def set_modified(self):
+        if self.needs_rebuilding():
+            return
+        self.state = Node.STATE_MODIFIED
+        if self.parent is not None:
+            self.set_parent_modified(self.parent())
+
+    def set_parent_modified(self, parent):
+        parent.set_modified()
+
+    def rebuild(self):
+        if not self.needs_rebuilding():
+            return True
+        if self.children is not None:
+            if not self.rebuild_children(self.children):
+                return False
+        if not self.build():
+            return False
+        self.state = Node.STATE_BUILT
+        return True
+
+    def rebuild_children(self, children):
+        for child in children:
+            if not self.rebuild_child(child):
+                return False
+        return True
+
+    def rebuild_child(self, child):
+        return child.rebuild()
+
+    def build(self):
+        return True

pve/pixmap.py

@@ -60,10 +60,10 @@ class Format:
     def __init__(self, channels, depth):
         self._channels = channels
         self._depth = depth
-        if depth is 8:
+        if depth == 8:
             self._type = 'B'
             self._size = channels
-        elif depth is 16:
+        elif depth == 16:
             self._type = 'H'
             self._size = channels * 2
         else:

pve/polygon.py

@@ -0,0 +1,107 @@
+# People's Video Editor: high quality, GPU accelerated mp4 editor
+# Copyright (C) 2025 Roz K <roz@rozk.net>
+#
+# This file is part of People's Video Editor.
+#
+# People's Video Editor is free software: you can redistribute it and/or modify it under the terms of the
+# GNU General Public License as published by the Free Software Foundation, either version 3 of the License,
+# or (at your option) any later version.
+#
+# People's Video Editor is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+# without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along with People's Video Editor.
+# If not, see <https://www.gnu.org/licenses/>.
+
+from array import array
+
+from .node import Node
+from .vector import Vector2
+
+class Point:
+    __slots__ = 'position', 'mapping'
+
+    def __init__(self, xy = Vector2(), uv = Vector2()):
+        assert isinstance(xy, Vector2) and isinstance(uv, Vector2)
+        self.position = xy
+        self.mapping = uv
+
+class Polygon(Node):
+    __slots__ = '_positions', '_mappings', '_len'
+
+    @classmethod
+    def rectangle(cls, geometry):
+        tl = Vector2(0.0, 0.0)
+        tr = Vector2(geometry._width, 0.0)
+        br = Vector2(geometry._width, geometry._height)
+        bl = Vector2(0.0, geometry._height)
+        return cls(points = (
+            Point(tl, tl),
+            Point(tr, tr),
+            Point(br, br),
+            Point(bl, bl)))
+
+    def __init__(self, parent = None, children = None, size = 0, points = None):
+        Node.__init__(self, parent, children)
+        self.clear_points()
+        self.add_points(size, points)
+
+    def __len__(self):
+        return self._len
+
+    def __getitem__(self, index):
+        begin = index * 2
+        end = begin + 2
+        return Point(
+            Vector2(*self._positions[begin:end]),
+            Vector2(*self._mappings[begin:end]))
+
+    def __setitem__(self, index, point):
+        begin = index * 2
+        end = begin + 2
+        self._positions[begin:end] = array(Vector2.TYPE, point.position)
+        self._mappings[begin:end] = array(Vector2.TYPE, point.mapping)
+
+    def add_child(self, child):
+        assert isinstance(child, Polygon)
+        Node.add_child(self, child)
+
+    def add_points(self, count = 0, points = None):
+        assert (count > 0) ^ len(points)
+        if count:
+            initializer = bytes(count * Vector2.SIZE)
+            self._positions.frombytes(initializer)
+            self._mappings.frombytes(initializer)
+            self._len += count
+        else:
+            for point in points:
+                self._positions.extend(point.position)
+                self._mappings.extend(point.mapping)
+            self._len += len(points)
+
+    def insert_points(self, index, count = 0, points = None):
+        assert (count == 0) ^ (points is None)
+        index *= 2
+        if count:
+            initializer = array(Vector2.TYPE, bytes(count * Vector2.SIZE))
+            self._positions[index:index] = initializer
+            self._mappings[index:index] = initializer
+            self._len += count
+        else:
+            polygon = Polygon(points = points)
+            self._positions[index:index] = polygon._positions
+            self._mappings[index:index] = polygon._mappings
+            self._len += polygon._len
+
+    def remove_points(self, index, count = 1):
+        begin = index * 2
+        end = begin + count * 2
+        del self._positions[begin:end]
+        del self._mappings[begin:end]
+        self._len -= count
+
+    def clear_points(self):
+        self._positions = array(Vector2.TYPE)
+        self._mappings = array(Vector2.TYPE)
+        self._len = 0

pve/shape.py

@@ -14,151 +14,13 @@
 # You should have received a copy of the GNU General Public License along with People's Video Editor.
 # If not, see <https://www.gnu.org/licenses/>.
 
-#TODO: split channels
+from .node import Node
 
-import itertools
+class Shape(Node):
-from array import array
 
-_X, _Y, _U, _V, _Channels = itertools.count(0)
+    def __init__(self, parent = None, children = None):
-_Type = 'f'
+        Node.__init__(self, parent, children)
-_Size = array(_Type).itemsize * _Channels
 
-class Vertex:
+    def rebuild(self):
-    __slots__ = 'view'
+        #TODO
-
+        raise NotImplementedError
-    Type = _Type
-    Channels = _Channels
-    Size = _Size
-
-    def __init__(self, view):
-        assert isinstance(view, memoryview)
-        self.view = view
-
-    def __del__(self):
-        del self._view
-
-    @property
-    def xy(self):
-        return self.view[_X], self.view[_Y]
-
-    @xy.setter
-    def xy(self, value):
-        self.view[_X], self.view[_Y] = value
-
-    @property
-    def x(self):
-        return self.view[_X]
-
-    @x.setter
-    def x(self, value):
-        self.view[_X] = value
-
-    @property
-    def y(self):
-        return self.view[_Y]
-
-    @y.setter
-    def y(self, value):
-        self.view[_Y] = value
-
-    @property
-    def uv(self):
-        return self.view[_U], self.view[_V]
-
-    @uv.setter
-    def uv(self, value):
-        self.view[_U], self.view[_V] = value
-
-    @property
-    def u(self):
-        return self.view[_U]
-
-    @u.setter
-    def u(self, value):
-        self.view[_U] = value
-
-    @property
-    def v(self):
-        return self.view[_V]
-
-    @v.setter
-    def v(self, value):
-        self.view[_V] = value
-
-class Shape:
-    __slots__ = '_array', '_view', '_size', '_cutouts'
-
-    @classmethod
-    def rectangle(cls, geometry):
-        shape = cls(size = 4)
-        tl = Vertex(shape[0])
-        tl.xy = tl.uv = (0.0, 0.0)
-        tr = Vertex(shape[1])
-        tr.xy = tr.uv = (geometry._width, 0.0)
-        br = Vertex(shape[2])
-        br.xy = br.uv = (geometry._width, geometry._height)
-        bl = Vertex(shape[3])
-        bl.xy = bl.uv = (0.0, geometry._height)
-        return shape
-
-    def __init__(self, size = 0, cutouts = None):
-        self._array = array(_Type, bytes(size * _Size))
-        self._view = memoryview(self._array)
-        self._size = size
-        self._cutouts = list(cutouts) if cutouts else None
-
-    def __del__(self):
-        del self._view
-        del self._array
-        del self._cutouts
-
-    def __len__(self):
-        return self._size
-
-    def __getitem__(self, index):
-        index *= _Channels
-        return self._view[index:(index + _Channels)]
-
-    @property
-    def size(self):
-        return self._size
-
-    @property
-    def view(self):
-        return self._view
-
-    @property
-    def cutouts(self):
-        return list(self._cutouts) if self._cutouts else []
-
-    @cutouts.setter
-    def cutouts(self, value):
-        self._cutouts = list(value) if value else None
-
-    def append(self, count = 1):
-        index = self._size
-        self._view.release()
-        self._array.frombytes(bytes(count * _Size))
-        self._view = memoryview(self._array)
-        self._size += count
-        return index
-
-    def insert(self, index, count = 1):
-        index *= _Channels
-        self._view.release()
-        self._array[index:index] = array(_Type, bytes(count * _Size))
-        self._view = memoryview(self._array)
-        self._size += count
-
-    def remove(self, index, count = 1):
-        index *= _Channels
-        self._view.release()
-        del self._array[index:(index + count * _Channels)]
-        self._view = memoryview(self._array)
-        self._size -= count
-
-    def clear(self):
-        self._view.release()
-        self._array = array(_Type)
-        self._view = memoryview(self._array)
-        self._size = 0

pve/vector.py

@@ -0,0 +1,29 @@
+# People's Video Editor: high quality, GPU accelerated mp4 editor
+# Copyright (C) 2025 Roz K <roz@rozk.net>
+#
+# This file is part of People's Video Editor.
+#
+# People's Video Editor is free software: you can redistribute it and/or modify it under the terms of the
+# GNU General Public License as published by the Free Software Foundation, either version 3 of the License,
+# or (at your option) any later version.
+#
+# People's Video Editor is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+# without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along with People's Video Editor.
+# If not, see <https://www.gnu.org/licenses/>.
+
+class Vector2:
+    __slots__ = 'x', 'y'
+
+    TYPE = 'f'
+    SIZE = 8
+
+    def __init__(self, x = 0.0, y = 0.0):
+        assert isinstance(x, float) and isinstance(y, float)
+        self.x = x
+        self.y = y
+
+    def __iter__(self):
+        return iter((self.x, self.y))

pygl/libgl/__init__.py

@@ -31,11 +31,11 @@ def upload_texture(texture, view, line_size):
 def dowload_texture(texture, view, line_size):
     pass
 
-def create_vertex_buffer(size):
+def create_vertex_buffer(size, channels, elems):
     return None
 
 def delete_vertex_buffer(buffer):
     pass
 
-def upload_vertex_buffer(buffer, view, size):
+def upload_vertex_buffer(buffer, views, size):
     pass

pygl/texture.py

@@ -14,7 +14,7 @@
 # You should have received a copy of the GNU General Public License along with People's Video Editor.
 # If not, see <https://www.gnu.org/licenses/>.
 
-import libgl
+from . import libgl
 
 class Texture:
     __slots__ = '_geometry', '_format', '_texture'

pygl/vertexbuffer.py

@@ -14,13 +14,13 @@
 # You should have received a copy of the GNU General Public License along with People's Video Editor.
 # If not, see <https://www.gnu.org/licenses/>.
 
-import libgl
+from . import libgl
 
 class VertexBuffer:
     __slots__ = '_buffer', '_size'
 
-    def __init__(self, size):
+    def __init__(self, size, channels, elems):
-        self._buffer = libgl.create_vertex_buffer(size)
+        self._buffer = libgl.create_vertex_buffer(size, channels, elems)
         self._size = size
 
     def __del__(self):
@@ -32,4 +32,4 @@ class VertexBuffer:
 
     def upload(self, mesh):
         assert (self._size >= mesh.size)
-        return libgl.upload_vertex_buffer(self._buffer, mesh.view, mesh.size)
+        return libgl.upload_vertex_buffer(self._buffer, mesh.views, mesh.size)