Minimal pyglet with OpenImageIO

window-sample.py

#!/usr/bin/env python

import OpenImageIO
import pyglet
import glooey

if __name__ == "__main__":
    window = pyglet.window.Window()
    batch = pyglet.graphics.Batch()
    ui = pyglet.graphics.OrderedGroup(100)
    background = pyglet.graphics.OrderedGroup(0)

    gui = glooey.Gui(window, batch=batch, group=ui)

    widget = glooey.Placeholder()
    gui.add(widget)
    label = glooey.Label('Hello world!')
    gui.add(label)

    image_input = OpenImageIO.ImageBuf(
        "A009C002_190210_R0EI_Alexa_LogCWideGamut.tif"
    )

    if image_input is not None:
        print(image_input.spec())
    else:
        print("Image load failed")

    horizontal_resolution = 640

    scale = horizontal_resolution / image_input.spec().width

    image_resized = OpenImageIO.ImageBufAlgo.resize (
        OpenImageIO.ImageBufAlgo.flip(image_input),
        roi=OpenImageIO.ROI(
            0,
            int(image_input.spec().width * scale),
            0,
            int(image_input.spec().height * scale),
            0,
            1,
            0,
            3))

    if image_resized is not None:
        print(image_input.spec())
    else:
        print("Image load failed")

    image_pixels = image_resized.get_pixels(OpenImageIO.UINT8).flatten()
    rawData = (pyglet.gl.GLubyte * len(image_pixels))(*image_pixels)

    pyglet_image = pyglet.image.ImageData(
        image_resized.spec().width,
        image_resized.spec().height,
        "RGB",
        rawData
    )

    background = pyglet.sprite.Sprite(
        pyglet_image, batch=batch,group=background)

    print(pyglet_image.format)
    print(pyglet_image.pitch)

    @window.event
    def on_draw():
        window.clear()
        # pyglet_image.blit(0, 0)
        batch.draw()

    pyglet.app.run()