# 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 . import libgl

class Texture:
    __slots__ = '_geometry', '_format', '_texture'

    def __init__(self, geometry, format):
        self._geometry = geometry
        self._format = format
        self._texture = libgl.create_texture(geometry.width, geometry.height, format.channels, format.depth)

    def __del__(self):
        libgl.delete_texture(self._texture)

    @property
    def geometry(self):
        return self._geometry

    @property
    def width(self):
        return self._geometry._width

    @property
    def height(self):
        return self._geometry._height

    @property
    def ratio(self):
        return self._geometry._ratio

    @property
    def format(self):
        return self._format

    @property
    def channels(self):
        return self._format._channels

    @property
    def depth(self):
        return self._format._depth

    def upload(self, pixmap):
        assert (self._format == pixmap.format)
        assert (self._geometry >= pixmap.geometry)
        return libgl.upload_texture(self._texture, pixmap.view, pixmap.line_size)

    def download(self, pixmap):
        assert (self._format == pixmap.format)
        assert (self._geometry >= pixmap.geometry)
        return libgl.upload_texture(self._texture, pixmap.view, pixmap.line_size)